All of lore.kernel.org
 help / color / mirror / Atom feed
* [PULL 00/51] target-arm queue
@ 2021-09-01 10:36 Peter Maydell
  2021-09-01 10:36 ` [PULL 01/51] tests: Remove uses of deprecated raspi2/raspi3 machine names Peter Maydell
                   ` (51 more replies)
  0 siblings, 52 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

The following changes since commit ec397e90d21269037280633b6058d1f280e27667:

  Merge remote-tracking branch 'remotes/alistair/tags/pull-riscv-to-apply-20210901-2' into staging (2021-09-01 08:33:02 +0100)

are available in the Git repository at:

  https://git.linaro.org/people/pmaydell/qemu-arm.git tags/pull-target-arm-20210901

for you to fetch changes up to 683754c7b61f9e2ff098720ec80c9ab86c54663d:

  arm: Remove system_clock_scale global (2021-09-01 11:08:21 +0100)

----------------------------------------------------------------
 * Refactor M-profile systick to use Clocks instead of system_clock_scale global
 * clock: Provide builtin multiplier/divider
 * Add A64FX processor model
 * Enable MVE emulation in Cortex-M55
 * hw: Add compat machines for 6.2
 * hw/intc/arm_gicv3: Replace mis-used MEMTX_* constants by booleans
 * hw/arm/raspi: Remove deprecated raspi2/raspi3 aliases

----------------------------------------------------------------
Peter Maydell (43):
      target/arm: Implement MVE VADD (floating-point)
      target/arm: Implement MVE VSUB, VMUL, VABD, VMAXNM, VMINNM
      target/arm: Implement MVE VCADD
      target/arm: Implement MVE VFMA and VFMS
      target/arm: Implement MVE VCMUL and VCMLA
      target/arm: Implement MVE VMAXNMA and VMINNMA
      target/arm: Implement MVE scalar fp insns
      target/arm: Implement MVE fp-with-scalar VFMA, VFMAS
      softfloat: Remove assertion preventing silencing of NaN in default-NaN mode
      target/arm: Implement MVE FP max/min across vector
      target/arm: Implement MVE fp vector comparisons
      target/arm: Implement MVE fp scalar comparisons
      target/arm: Implement MVE VCVT between floating and fixed point
      target/arm: Implement MVE VCVT between fp and integer
      target/arm: Implement MVE VCVT with specified rounding mode
      target/arm: Implement MVE VCVT between single and half precision
      target/arm: Implement MVE VRINT insns
      target/arm: Enable MVE in Cortex-M55
      arm: Move M-profile RAS register block into its own device
      arm: Move systick device creation from NVIC to ARMv7M object
      arm: Move system PPB container handling to armv7m
      hw/timer/armv7m_systick: Add usual QEMU interface comment
      hw/timer/armv7m_systick: Add input clocks
      hw/arm/armv7m: Create input clocks
      armsse: Wire up systick cpuclk clock
      hw/arm/mps2.c: Connect up armv7m clocks
      clock: Provide builtin multiplier/divider
      hw/arm: Don't allocate separate MemoryRegions in stm32 SoC realize
      hw/arm/stm32f100: Wire up sysclk and refclk
      hw/arm/stm32f205: Wire up sysclk and refclk
      hw/arm/stm32f405: Wire up sysclk and refclk
      hw/arm/stm32vldiscovery: Delete trailing blank line
      hw/arm/nrf51: Wire up sysclk
      hw/arm/stellaris: split stellaris_sys_init()
      hw/arm/stellaris: Wire sysclk up to armv7m
      hw/arm/msf2_soc: Don't allocate separate MemoryRegions
      hw/arm/msf2: Use Clock input to MSF2_SOC instead of m3clk property
      hw/arm/msf2-soc: Wire up refclk
      hw/timer/armv7m_systick: Use clock inputs instead of system_clock_scale
      hw/arm/stellaris: Fix code style issues in GPTM code
      hw/arm/stellaris: Split stellaris-gptm into its own file
      hw/timer/stellaris-gptm: Use Clock input instead of system_clock_scale
      arm: Remove system_clock_scale global

Philippe Mathieu-Daudé (4):
      tests: Remove uses of deprecated raspi2/raspi3 machine names
      hw/arm/raspi: Remove deprecated raspi2/raspi3 aliases
      hw/intc/arm_gicv3_dist: Rename 64-bit accessors with 'q' suffix
      hw/intc/arm_gicv3: Replace mis-used MEMTX_* constants by booleans

Shuuichirou Ishii (3):
      target-arm: Add support for Fujitsu A64FX
      hw/arm/virt: target-arm: Add A64FX processor support to virt machine
      tests/arm-cpu-features: Add A64FX processor related tests

Yanan Wang (1):
      hw: Add compat machines for 6.2

 docs/about/deprecated.rst               |   7 -
 docs/about/removed-features.rst         |   7 +
 docs/devel/clocks.rst                   |  23 ++
 docs/devel/qgraph.rst                   |  38 +-
 docs/system/arm/virt.rst                |   1 +
 include/hw/arm/armv7m.h                 |  24 ++
 include/hw/arm/msf2-soc.h               |   8 +-
 include/hw/arm/nrf51_soc.h              |   2 +
 include/hw/arm/stm32f100_soc.h          |   8 +
 include/hw/arm/stm32f205_soc.h          |   8 +
 include/hw/arm/stm32f405_soc.h          |   3 +
 include/hw/boards.h                     |   3 +
 include/hw/clock.h                      |  29 ++
 include/hw/i386/pc.h                    |   3 +
 include/hw/intc/armv7m_nvic.h           |   8 -
 include/hw/misc/armv7m_ras.h            |  37 ++
 include/hw/timer/armv7m_systick.h       |  36 +-
 include/hw/timer/stellaris-gptm.h       |  51 +++
 target/arm/helper-mve.h                 | 142 +++++++
 target/arm/translate.h                  |   6 +
 tests/qtest/libqos/qgraph.h             |   6 +-
 tests/qtest/libqos/qgraph_internal.h    |   2 +-
 target/arm/mve.decode                   | 297 +++++++++++++--
 hw/arm/armsse.c                         |  20 +-
 hw/arm/armv7m.c                         | 260 ++++++++++++-
 hw/arm/mps2.c                           |  17 +-
 hw/arm/msf2-soc.c                       |  68 ++--
 hw/arm/msf2-som.c                       |   7 +-
 hw/arm/netduino2.c                      |  12 +-
 hw/arm/netduinoplus2.c                  |  12 +-
 hw/arm/nrf51_soc.c                      |  20 +-
 hw/arm/raspi.c                          |   2 -
 hw/arm/stellaris.c                      | 396 +++----------------
 hw/arm/stm32f100_soc.c                  |  47 ++-
 hw/arm/stm32f205_soc.c                  |  47 ++-
 hw/arm/stm32f405_soc.c                  |  30 ++
 hw/arm/stm32vldiscovery.c               |  13 +-
 hw/arm/virt.c                           |  12 +-
 hw/core/clock-vmstate.c                 |  40 +-
 hw/core/clock.c                         |  31 +-
 hw/core/machine.c                       |   3 +
 hw/i386/pc.c                            |   3 +
 hw/i386/pc_piix.c                       |  14 +-
 hw/i386/pc_q35.c                        |  13 +-
 hw/intc/arm_gicv3_dist.c                | 205 +++++-----
 hw/intc/armv7m_nvic.c                   | 274 +-------------
 hw/misc/armv7m_ras.c                    |  93 +++++
 hw/ppc/spapr.c                          |  17 +-
 hw/s390x/s390-virtio-ccw.c              |  14 +-
 hw/timer/armv7m_systick.c               | 118 ++++--
 hw/timer/stellaris-gptm.c               | 332 ++++++++++++++++
 target/arm/cpu64.c                      |  48 +++
 target/arm/cpu_tcg.c                    |   7 +-
 target/arm/mve_helper.c                 | 650 ++++++++++++++++++++++++++++++++
 target/arm/translate-mve.c              | 277 +++++++++++++-
 target/arm/translate-neon.c             |   6 -
 tests/qtest/arm-cpu-features.c          |  13 +
 tests/qtest/boot-serial-test.c          |   2 +-
 tests/qtest/libqos/arm-raspi2-machine.c |   8 +-
 tests/unit/test-qgraph.c                |   2 +-
 fpu/softfloat-specialize.c.inc          |   1 -
 MAINTAINERS                             |   2 +
 hw/arm/Kconfig                          |   1 +
 hw/core/trace-events                    |   1 +
 hw/misc/meson.build                     |   2 +
 hw/timer/Kconfig                        |   3 +
 hw/timer/meson.build                    |   1 +
 tests/acceptance/boot_linux_console.py  |   6 +-
 68 files changed, 2928 insertions(+), 971 deletions(-)
 create mode 100644 include/hw/misc/armv7m_ras.h
 create mode 100644 include/hw/timer/stellaris-gptm.h
 create mode 100644 hw/misc/armv7m_ras.c
 create mode 100644 hw/timer/stellaris-gptm.c


^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 01/51] tests: Remove uses of deprecated raspi2/raspi3 machine names
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 02/51] hw/arm/raspi: Remove deprecated raspi2/raspi3 aliases Peter Maydell
                   ` (50 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

From: Philippe Mathieu-Daudé <f4bug@amsat.org>

Commit 155e1c82ed0 deprecated the raspi2/raspi3 machine names.
Use the recommended new names: raspi2b and raspi3b.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Message-id: 20210827060815.2384760-2-f4bug@amsat.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 docs/devel/qgraph.rst                   | 38 ++++++++++++-------------
 tests/qtest/libqos/qgraph.h             |  6 ++--
 tests/qtest/libqos/qgraph_internal.h    |  2 +-
 tests/qtest/boot-serial-test.c          |  2 +-
 tests/qtest/libqos/arm-raspi2-machine.c |  8 +++---
 tests/unit/test-qgraph.c                |  2 +-
 tests/acceptance/boot_linux_console.py  |  6 ++--
 7 files changed, 32 insertions(+), 32 deletions(-)

diff --git a/docs/devel/qgraph.rst b/docs/devel/qgraph.rst
index 39e293687e6..c2882c3a334 100644
--- a/docs/devel/qgraph.rst
+++ b/docs/devel/qgraph.rst
@@ -41,7 +41,7 @@ Nodes
 
 A node can be of four types:
 
-- **QNODE_MACHINE**:   for example ``arm/raspi2``
+- **QNODE_MACHINE**:   for example ``arm/raspi2b``
 - **QNODE_DRIVER**:    for example ``generic-sdhci``
 - **QNODE_INTERFACE**: for example ``sdhci`` (interface for all ``-sdhci``
   drivers).
@@ -119,12 +119,12 @@ It is possible to troubleshoot unavailable tests by running::
   #      |-> dest='i440FX-pcihost' type=0 (node=0x5591421117f0)
   #   src=''
   #      |-> dest='x86_64/pc' type=0 (node=0x559142111600)
-  #      |-> dest='arm/raspi2' type=0 (node=0x559142110740)
+  #      |-> dest='arm/raspi2b' type=0 (node=0x559142110740)
   ...
   # }
   # ALL QGRAPH NODES: {
   #   name='virtio-net-tests/announce-self' type=3 cmd_line='(null)' [available]
-  #   name='arm/raspi2' type=0 cmd_line='-M raspi2 ' [UNAVAILABLE]
+  #   name='arm/raspi2b' type=0 cmd_line='-M raspi2b ' [UNAVAILABLE]
   ...
   # }
 
@@ -135,8 +135,8 @@ qgraph path in the "ALL QGRAPH EDGES" output as follows: '' -> 'x86_64/pc' ->
 'virtio-net'. The root of the qgraph is '' and the depth first search begins
 there.
 
-The ``arm/raspi`` machine node is listed as "UNAVAILABLE". Although it is
-reachable from the root via '' -> 'arm/raspi2' the node is unavailable because
+The ``arm/raspi2b`` machine node is listed as "UNAVAILABLE". Although it is
+reachable from the root via '' -> 'arm/raspi2b' the node is unavailable because
 the QEMU binary did not list it when queried by the framework. This is expected
 because we used the ``qemu-system-x86_64`` binary which does not support ARM
 machine types.
@@ -158,7 +158,7 @@ Here we continue the ``sdhci`` use case, with the following scenario:
 - ``sdhci-test`` aims to test the ``read[q,w], writeq`` functions
   offered by the ``sdhci`` drivers.
 - The current ``sdhci`` device is supported by both ``x86_64/pc`` and ``ARM``
-  (in this example we focus on the ``arm-raspi2``) machines.
+  (in this example we focus on the ``arm-raspi2b``) machines.
 - QEMU offers 2 types of drivers: ``QSDHCI_MemoryMapped`` for ``ARM`` and
   ``QSDHCI_PCI`` for ``x86_64/pc``. Both implement the
   ``read[q,w], writeq`` functions.
@@ -180,11 +180,11 @@ In order to implement such scenario in qgraph, the test developer needs to:
   all the pci drivers available)
 
   ``sdhci-pci --consumes--> pci-bus``
-- Create an ``arm/raspi2`` machine node. This machine ``contains``
+- Create an ``arm/raspi2b`` machine node. This machine ``contains``
   a ``generic-sdhci`` memory mapped ``sdhci`` driver node, representing
   ``QSDHCI_MemoryMapped``.
 
-  ``arm/raspi2 --contains--> generic-sdhci``
+  ``arm/raspi2b --contains--> generic-sdhci``
 - Create the ``sdhci`` interface node. This interface offers the
   functions that are shared by all ``sdhci`` devices.
   The interface is produced by ``sdhci-pci`` and ``generic-sdhci``,
@@ -199,7 +199,7 @@ In order to implement such scenario in qgraph, the test developer needs to:
 
   ``sdhci-test --consumes--> sdhci``
 
-``arm-raspi2`` machine, simplified from
+``arm-raspi2b`` machine, simplified from
 ``tests/qtest/libqos/arm-raspi2-machine.c``::
 
     #include "qgraph.h"
@@ -217,7 +217,7 @@ In order to implement such scenario in qgraph, the test developer needs to:
             return &machine->alloc;
         }
 
-        fprintf(stderr, "%s not present in arm/raspi2\n", interface);
+        fprintf(stderr, "%s not present in arm/raspi2b\n", interface);
         g_assert_not_reached();
     }
 
@@ -229,7 +229,7 @@ In order to implement such scenario in qgraph, the test developer needs to:
             return &machine->sdhci.obj;
         }
 
-        fprintf(stderr, "%s not present in arm/raspi2\n", device);
+        fprintf(stderr, "%s not present in arm/raspi2b\n", device);
         g_assert_not_reached();
     }
 
@@ -253,10 +253,10 @@ In order to implement such scenario in qgraph, the test developer needs to:
 
     static void raspi2_register_nodes(void)
     {
-        /* arm/raspi2 --contains--> generic-sdhci */
-        qos_node_create_machine("arm/raspi2",
+        /* arm/raspi2b --contains--> generic-sdhci */
+        qos_node_create_machine("arm/raspi2b",
                                  qos_create_machine_arm_raspi2);
-        qos_node_contains("arm/raspi2", "generic-sdhci", NULL);
+        qos_node_contains("arm/raspi2b", "generic-sdhci", NULL);
     }
 
     libqos_init(raspi2_register_nodes);
@@ -470,7 +470,7 @@ In the above example, all possible types of relations are created::
                                |
                                +--produces-- +
                                              |
-               arm/raspi2 --contains--> generic-sdhci
+               arm/raspi2b --contains--> generic-sdhci
 
 or inverting the consumes edge in consumed_by::
 
@@ -486,7 +486,7 @@ or inverting the consumes edge in consumed_by::
                              |
                              +--produces-- +
                                            |
-            arm/raspi2 --contains--> generic-sdhci
+            arm/raspi2b --contains--> generic-sdhci
 
 Adding a new test
 """""""""""""""""
@@ -536,7 +536,7 @@ Final graph will be like this::
                                |
                                +--produces-- +
                                              |
-               arm/raspi2 --contains--> generic-sdhci
+               arm/raspi2b --contains--> generic-sdhci
 
 or inverting the consumes edge in consumed_by::
 
@@ -552,7 +552,7 @@ or inverting the consumes edge in consumed_by::
                              |
                              +--produces-- +
                                            |
-            arm/raspi2 --contains--> generic-sdhci
+            arm/raspi2b --contains--> generic-sdhci
 
 Assuming there the binary is
 ``QTEST_QEMU_BINARY=./qemu-system-x86_64``
@@ -561,7 +561,7 @@ a valid test path will be:
 
 and for the binary ``QTEST_QEMU_BINARY=./qemu-system-arm``:
 
-``/arm/raspi2/generic-sdhci/sdhci/sdhci-test``
+``/arm/raspi2b/generic-sdhci/sdhci/sdhci-test``
 
 Additional examples are also in ``test-qgraph.c``
 
diff --git a/tests/qtest/libqos/qgraph.h b/tests/qtest/libqos/qgraph.h
index 54672350c8f..871740c0dc8 100644
--- a/tests/qtest/libqos/qgraph.h
+++ b/tests/qtest/libqos/qgraph.h
@@ -252,17 +252,17 @@ void qos_node_create_driver_named(const char *name, const char *qemu_name,
  * This function can be useful when there are multiple devices
  * with the same node name contained in a machine/other node
  *
- * For example, if ``arm/raspi2`` contains 2 ``generic-sdhci``
+ * For example, if ``arm/raspi2b`` contains 2 ``generic-sdhci``
  * devices, the right commands will be:
  *
  * .. code::
  *
- *    qos_node_create_machine("arm/raspi2");
+ *    qos_node_create_machine("arm/raspi2b");
  *    qos_node_create_driver("generic-sdhci", constructor);
  *    // assume rest of the fields are set NULL
  *    QOSGraphEdgeOptions op1 = { .edge_name = "emmc" };
  *    QOSGraphEdgeOptions op2 = { .edge_name = "sdcard" };
- *    qos_node_contains("arm/raspi2", "generic-sdhci", &op1, &op2, NULL);
+ *    qos_node_contains("arm/raspi2b", "generic-sdhci", &op1, &op2, NULL);
  *
  * Of course this also requires that the @container's get_device function
  * should implement a case for "emmc" and "sdcard".
diff --git a/tests/qtest/libqos/qgraph_internal.h b/tests/qtest/libqos/qgraph_internal.h
index c0025f5ab9b..7d62fd17af7 100644
--- a/tests/qtest/libqos/qgraph_internal.h
+++ b/tests/qtest/libqos/qgraph_internal.h
@@ -230,7 +230,7 @@ void qos_graph_foreach_test_path(QOSTestCallback fn);
 /**
  * qos_get_machine_type(): return QEMU machine type for a machine node.
  * This function requires every machine @name to be in the form
- * <arch>/<machine_name>, like "arm/raspi2" or "x86_64/pc".
+ * <arch>/<machine_name>, like "arm/raspi2b" or "x86_64/pc".
  *
  * The function will validate the format and return a pointer to
  * @machine to <machine_name>.  For example, when passed "x86_64/pc"
diff --git a/tests/qtest/boot-serial-test.c b/tests/qtest/boot-serial-test.c
index 96849cec915..83828ba2707 100644
--- a/tests/qtest/boot-serial-test.c
+++ b/tests/qtest/boot-serial-test.c
@@ -173,7 +173,7 @@ static testdef_t tests[] = {
       sizeof(kernel_pls3adsp1800), kernel_pls3adsp1800 },
     { "microblazeel", "petalogix-ml605", "", "TT",
       sizeof(kernel_plml605), kernel_plml605 },
-    { "arm", "raspi2", "", "TT", sizeof(bios_raspi2), 0, bios_raspi2 },
+    { "arm", "raspi2b", "", "TT", sizeof(bios_raspi2), 0, bios_raspi2 },
     /* For hppa, force bios to output to serial by disabling graphics. */
     { "hppa", "hppa", "-vga none", "SeaBIOS wants SYSTEM HALT" },
     { "aarch64", "virt", "-cpu max", "TT", sizeof(kernel_aarch64),
diff --git a/tests/qtest/libqos/arm-raspi2-machine.c b/tests/qtest/libqos/arm-raspi2-machine.c
index 35bb4709a45..09ca863c103 100644
--- a/tests/qtest/libqos/arm-raspi2-machine.c
+++ b/tests/qtest/libqos/arm-raspi2-machine.c
@@ -42,7 +42,7 @@ static void *raspi2_get_driver(void *object, const char *interface)
         return &machine->alloc;
     }
 
-    fprintf(stderr, "%s not present in arm/raspi2\n", interface);
+    fprintf(stderr, "%s not present in arm/raspi2b\n", interface);
     g_assert_not_reached();
 }
 
@@ -53,7 +53,7 @@ static QOSGraphObject *raspi2_get_device(void *obj, const char *device)
         return &machine->sdhci.obj;
     }
 
-    fprintf(stderr, "%s not present in arm/raspi2\n", device);
+    fprintf(stderr, "%s not present in arm/raspi2b\n", device);
     g_assert_not_reached();
 }
 
@@ -85,8 +85,8 @@ static void *qos_create_machine_arm_raspi2(QTestState *qts)
 
 static void raspi2_register_nodes(void)
 {
-    qos_node_create_machine("arm/raspi2", qos_create_machine_arm_raspi2);
-    qos_node_contains("arm/raspi2", "generic-sdhci", NULL);
+    qos_node_create_machine("arm/raspi2b", qos_create_machine_arm_raspi2);
+    qos_node_contains("arm/raspi2b", "generic-sdhci", NULL);
 }
 
 libqos_init(raspi2_register_nodes);
diff --git a/tests/unit/test-qgraph.c b/tests/unit/test-qgraph.c
index f819430e2cc..334c76c8e71 100644
--- a/tests/unit/test-qgraph.c
+++ b/tests/unit/test-qgraph.c
@@ -21,7 +21,7 @@
 #include "../qtest/libqos/qgraph_internal.h"
 
 #define MACHINE_PC "x86_64/pc"
-#define MACHINE_RASPI2 "arm/raspi2"
+#define MACHINE_RASPI2 "arm/raspi2b"
 #define I440FX "i440FX-pcihost"
 #define PCIBUS_PC "pcibus-pc"
 #define SDHCI "sdhci"
diff --git a/tests/acceptance/boot_linux_console.py b/tests/acceptance/boot_linux_console.py
index 5248c8097df..0a49c0e2760 100644
--- a/tests/acceptance/boot_linux_console.py
+++ b/tests/acceptance/boot_linux_console.py
@@ -475,7 +475,7 @@ def do_test_arm_raspi2(self, uart_id):
     def test_arm_raspi2_uart0(self):
         """
         :avocado: tags=arch:arm
-        :avocado: tags=machine:raspi2
+        :avocado: tags=machine:raspi2b
         :avocado: tags=device:pl011
         :avocado: tags=accel:tcg
         """
@@ -484,7 +484,7 @@ def test_arm_raspi2_uart0(self):
     def test_arm_raspi2_initrd(self):
         """
         :avocado: tags=arch:arm
-        :avocado: tags=machine:raspi2
+        :avocado: tags=machine:raspi2b
         """
         deb_url = ('http://archive.raspberrypi.org/debian/'
                    'pool/main/r/raspberrypi-firmware/'
@@ -971,7 +971,7 @@ def test_arm_orangepi_uboot_netbsd9(self):
     def test_aarch64_raspi3_atf(self):
         """
         :avocado: tags=arch:aarch64
-        :avocado: tags=machine:raspi3
+        :avocado: tags=machine:raspi3b
         :avocado: tags=cpu:cortex-a53
         :avocado: tags=device:pl011
         :avocado: tags=atf
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 02/51] hw/arm/raspi: Remove deprecated raspi2/raspi3 aliases
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
  2021-09-01 10:36 ` [PULL 01/51] tests: Remove uses of deprecated raspi2/raspi3 machine names Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 03/51] hw/intc/arm_gicv3_dist: Rename 64-bit accessors with 'q' suffix Peter Maydell
                   ` (49 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

From: Philippe Mathieu-Daudé <f4bug@amsat.org>

Remove the raspi2/raspi3 machine aliases,
deprecated since commit 155e1c82ed0.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20210827060815.2384760-3-f4bug@amsat.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 docs/about/deprecated.rst       | 7 -------
 docs/about/removed-features.rst | 7 +++++++
 hw/arm/raspi.c                  | 2 --
 3 files changed, 7 insertions(+), 9 deletions(-)

diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst
index 8d4fd384a59..1e1a5e96ad4 100644
--- a/docs/about/deprecated.rst
+++ b/docs/about/deprecated.rst
@@ -207,13 +207,6 @@ this CPU is also deprecated.
 System emulator machines
 ------------------------
 
-Raspberry Pi ``raspi2`` and ``raspi3`` machines (since 5.2)
-'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
-
-The Raspberry Pi machines come in various models (A, A+, B, B+). To be able
-to distinguish which model QEMU is implementing, the ``raspi2`` and ``raspi3``
-machines have been renamed ``raspi2b`` and ``raspi3b``.
-
 Aspeed ``swift-bmc`` machine (since 6.1)
 ''''''''''''''''''''''''''''''''''''''''
 
diff --git a/docs/about/removed-features.rst b/docs/about/removed-features.rst
index 08f9e625ce6..9d0d90c90d9 100644
--- a/docs/about/removed-features.rst
+++ b/docs/about/removed-features.rst
@@ -574,6 +574,13 @@ This machine has been renamed ``fuloong2e``.
 These machine types were very old and likely could not be used for live
 migration from old QEMU versions anymore. Use a newer machine type instead.
 
+Raspberry Pi ``raspi2`` and ``raspi3`` machines (removed in 6.2)
+''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
+
+The Raspberry Pi machines come in various models (A, A+, B, B+). To be able
+to distinguish which model QEMU is implementing, the ``raspi2`` and ``raspi3``
+machines have been renamed ``raspi2b`` and ``raspi3b``.
+
 
 linux-user mode CPUs
 --------------------
diff --git a/hw/arm/raspi.c b/hw/arm/raspi.c
index 0ada91c05e9..146d35382bf 100644
--- a/hw/arm/raspi.c
+++ b/hw/arm/raspi.c
@@ -340,7 +340,6 @@ static void raspi2b_machine_class_init(ObjectClass *oc, void *data)
     MachineClass *mc = MACHINE_CLASS(oc);
     RaspiMachineClass *rmc = RASPI_MACHINE_CLASS(oc);
 
-    mc->alias = "raspi2";
     rmc->board_rev = 0xa21041;
     raspi_machine_class_common_init(mc, rmc->board_rev);
 };
@@ -360,7 +359,6 @@ static void raspi3b_machine_class_init(ObjectClass *oc, void *data)
     MachineClass *mc = MACHINE_CLASS(oc);
     RaspiMachineClass *rmc = RASPI_MACHINE_CLASS(oc);
 
-    mc->alias = "raspi3";
     rmc->board_rev = 0xa02082;
     raspi_machine_class_common_init(mc, rmc->board_rev);
 };
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 03/51] hw/intc/arm_gicv3_dist: Rename 64-bit accessors with 'q' suffix
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
  2021-09-01 10:36 ` [PULL 01/51] tests: Remove uses of deprecated raspi2/raspi3 machine names Peter Maydell
  2021-09-01 10:36 ` [PULL 02/51] hw/arm/raspi: Remove deprecated raspi2/raspi3 aliases Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 04/51] hw/intc/arm_gicv3: Replace mis-used MEMTX_* constants by booleans Peter Maydell
                   ` (48 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

From: Philippe Mathieu-Daudé <philmd@redhat.com>

QEMU load/store API (docs/devel/loads-stores.rst) uses the 'q'
suffix for 64-bit accesses. Rename the current 'll' suffix to
have the GIC dist accessors better match the rest of the codebase.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20210826180704.2131949-2-philmd@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/intc/arm_gicv3_dist.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/hw/intc/arm_gicv3_dist.c b/hw/intc/arm_gicv3_dist.c
index b65f56f9035..7e9b393d9ab 100644
--- a/hw/intc/arm_gicv3_dist.c
+++ b/hw/intc/arm_gicv3_dist.c
@@ -763,8 +763,8 @@ static MemTxResult gicd_writel(GICv3State *s, hwaddr offset,
     }
 }
 
-static MemTxResult gicd_writell(GICv3State *s, hwaddr offset,
-                                uint64_t value, MemTxAttrs attrs)
+static MemTxResult gicd_writeq(GICv3State *s, hwaddr offset,
+                               uint64_t value, MemTxAttrs attrs)
 {
     /* Our only 64-bit registers are GICD_IROUTER<n> */
     int irq;
@@ -779,8 +779,8 @@ static MemTxResult gicd_writell(GICv3State *s, hwaddr offset,
     }
 }
 
-static MemTxResult gicd_readll(GICv3State *s, hwaddr offset,
-                               uint64_t *data, MemTxAttrs attrs)
+static MemTxResult gicd_readq(GICv3State *s, hwaddr offset,
+                              uint64_t *data, MemTxAttrs attrs)
 {
     /* Our only 64-bit registers are GICD_IROUTER<n> */
     int irq;
@@ -812,7 +812,7 @@ MemTxResult gicv3_dist_read(void *opaque, hwaddr offset, uint64_t *data,
         r = gicd_readl(s, offset, data, attrs);
         break;
     case 8:
-        r = gicd_readll(s, offset, data, attrs);
+        r = gicd_readq(s, offset, data, attrs);
         break;
     default:
         r = MEMTX_ERROR;
@@ -854,7 +854,7 @@ MemTxResult gicv3_dist_write(void *opaque, hwaddr offset, uint64_t data,
         r = gicd_writel(s, offset, data, attrs);
         break;
     case 8:
-        r = gicd_writell(s, offset, data, attrs);
+        r = gicd_writeq(s, offset, data, attrs);
         break;
     default:
         r = MEMTX_ERROR;
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 04/51] hw/intc/arm_gicv3: Replace mis-used MEMTX_* constants by booleans
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (2 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 03/51] hw/intc/arm_gicv3_dist: Rename 64-bit accessors with 'q' suffix Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 05/51] hw: Add compat machines for 6.2 Peter Maydell
                   ` (47 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

From: Philippe Mathieu-Daudé <philmd@redhat.com>

Quoting Peter Maydell:

  These MEMTX_* aren't from the memory transaction API functions;
  they're just being used by gicd_readl() and friends as a way to
  indicate a success/failure so that the actual MemoryRegionOps
  read/write fns like gicv3_dist_read() can log a guest error.
  Arguably this is a bit of a misuse of the MEMTX_* constants and
  perhaps we should have gicd_readl etc return a bool instead.

Follow his suggestion and replace the MEMTX_* constants by
boolean values, simplifying a bit the gicv3_dist_read() /
gicv3_dist_write() handlers.

Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20210826180704.2131949-3-philmd@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/intc/arm_gicv3_dist.c | 201 +++++++++++++++++++++------------------
 1 file changed, 106 insertions(+), 95 deletions(-)

diff --git a/hw/intc/arm_gicv3_dist.c b/hw/intc/arm_gicv3_dist.c
index 7e9b393d9ab..5beb7c4235a 100644
--- a/hw/intc/arm_gicv3_dist.c
+++ b/hw/intc/arm_gicv3_dist.c
@@ -262,8 +262,21 @@ static void gicd_write_irouter(GICv3State *s, MemTxAttrs attrs, int irq,
     gicv3_update(s, irq, 1);
 }
 
-static MemTxResult gicd_readb(GICv3State *s, hwaddr offset,
-                              uint64_t *data, MemTxAttrs attrs)
+/**
+ * gicd_readb
+ * gicd_readw
+ * gicd_readl
+ * gicd_readq
+ * gicd_writeb
+ * gicd_writew
+ * gicd_writel
+ * gicd_writeq
+ *
+ * Return %true if the operation succeeded, %false otherwise.
+ */
+
+static bool gicd_readb(GICv3State *s, hwaddr offset,
+                       uint64_t *data, MemTxAttrs attrs)
 {
     /* Most GICv3 distributor registers do not support byte accesses. */
     switch (offset) {
@@ -273,17 +286,17 @@ static MemTxResult gicd_readb(GICv3State *s, hwaddr offset,
         /* This GIC implementation always has affinity routing enabled,
          * so these registers are all RAZ/WI.
          */
-        return MEMTX_OK;
+        return true;
     case GICD_IPRIORITYR ... GICD_IPRIORITYR + 0x3ff:
         *data = gicd_read_ipriorityr(s, attrs, offset - GICD_IPRIORITYR);
-        return MEMTX_OK;
+        return true;
     default:
-        return MEMTX_ERROR;
+        return false;
     }
 }
 
-static MemTxResult gicd_writeb(GICv3State *s, hwaddr offset,
-                               uint64_t value, MemTxAttrs attrs)
+static bool gicd_writeb(GICv3State *s, hwaddr offset,
+                        uint64_t value, MemTxAttrs attrs)
 {
     /* Most GICv3 distributor registers do not support byte accesses. */
     switch (offset) {
@@ -293,25 +306,25 @@ static MemTxResult gicd_writeb(GICv3State *s, hwaddr offset,
         /* This GIC implementation always has affinity routing enabled,
          * so these registers are all RAZ/WI.
          */
-        return MEMTX_OK;
+        return true;
     case GICD_IPRIORITYR ... GICD_IPRIORITYR + 0x3ff:
     {
         int irq = offset - GICD_IPRIORITYR;
 
         if (irq < GIC_INTERNAL || irq >= s->num_irq) {
-            return MEMTX_OK;
+            return true;
         }
         gicd_write_ipriorityr(s, attrs, irq, value);
         gicv3_update(s, irq, 1);
-        return MEMTX_OK;
+        return true;
     }
     default:
-        return MEMTX_ERROR;
+        return false;
     }
 }
 
-static MemTxResult gicd_readw(GICv3State *s, hwaddr offset,
-                              uint64_t *data, MemTxAttrs attrs)
+static bool gicd_readw(GICv3State *s, hwaddr offset,
+                       uint64_t *data, MemTxAttrs attrs)
 {
     /* Only GICD_SETSPI_NSR, GICD_CLRSPI_NSR, GICD_SETSPI_SR and GICD_SETSPI_NSR
      * support 16 bit accesses, and those registers are all part of the
@@ -319,11 +332,11 @@ static MemTxResult gicd_readw(GICv3State *s, hwaddr offset,
      * implement (ie for us GICD_TYPER.MBIS == 0), so for us they are
      * reserved.
      */
-    return MEMTX_ERROR;
+    return false;
 }
 
-static MemTxResult gicd_writew(GICv3State *s, hwaddr offset,
-                               uint64_t value, MemTxAttrs attrs)
+static bool gicd_writew(GICv3State *s, hwaddr offset,
+                        uint64_t value, MemTxAttrs attrs)
 {
     /* Only GICD_SETSPI_NSR, GICD_CLRSPI_NSR, GICD_SETSPI_SR and GICD_SETSPI_NSR
      * support 16 bit accesses, and those registers are all part of the
@@ -331,11 +344,11 @@ static MemTxResult gicd_writew(GICv3State *s, hwaddr offset,
      * implement (ie for us GICD_TYPER.MBIS == 0), so for us they are
      * reserved.
      */
-    return MEMTX_ERROR;
+    return false;
 }
 
-static MemTxResult gicd_readl(GICv3State *s, hwaddr offset,
-                              uint64_t *data, MemTxAttrs attrs)
+static bool gicd_readl(GICv3State *s, hwaddr offset,
+                       uint64_t *data, MemTxAttrs attrs)
 {
     /* Almost all GICv3 distributor registers are 32-bit.
      * Note that WO registers must return an UNKNOWN value on reads,
@@ -363,7 +376,7 @@ static MemTxResult gicd_readl(GICv3State *s, hwaddr offset,
         } else {
             *data = s->gicd_ctlr;
         }
-        return MEMTX_OK;
+        return true;
     case GICD_TYPER:
     {
         /* For this implementation:
@@ -387,61 +400,61 @@ static MemTxResult gicd_readl(GICv3State *s, hwaddr offset,
 
         *data = (1 << 25) | (1 << 24) | (sec_extn << 10) |
             (0xf << 19) | itlinesnumber;
-        return MEMTX_OK;
+        return true;
     }
     case GICD_IIDR:
         /* We claim to be an ARM r0p0 with a zero ProductID.
          * This is the same as an r0p0 GIC-500.
          */
         *data = gicv3_iidr();
-        return MEMTX_OK;
+        return true;
     case GICD_STATUSR:
         /* RAZ/WI for us (this is an optional register and our implementation
          * does not track RO/WO/reserved violations to report them to the guest)
          */
         *data = 0;
-        return MEMTX_OK;
+        return true;
     case GICD_IGROUPR ... GICD_IGROUPR + 0x7f:
     {
         int irq;
 
         if (!attrs.secure && !(s->gicd_ctlr & GICD_CTLR_DS)) {
             *data = 0;
-            return MEMTX_OK;
+            return true;
         }
         /* RAZ/WI for SGIs, PPIs, unimplemented irqs */
         irq = (offset - GICD_IGROUPR) * 8;
         if (irq < GIC_INTERNAL || irq >= s->num_irq) {
             *data = 0;
-            return MEMTX_OK;
+            return true;
         }
         *data = *gic_bmp_ptr32(s->group, irq);
-        return MEMTX_OK;
+        return true;
     }
     case GICD_ISENABLER ... GICD_ISENABLER + 0x7f:
         *data = gicd_read_bitmap_reg(s, attrs, s->enabled, NULL,
                                      offset - GICD_ISENABLER);
-        return MEMTX_OK;
+        return true;
     case GICD_ICENABLER ... GICD_ICENABLER + 0x7f:
         *data = gicd_read_bitmap_reg(s, attrs, s->enabled, NULL,
                                      offset - GICD_ICENABLER);
-        return MEMTX_OK;
+        return true;
     case GICD_ISPENDR ... GICD_ISPENDR + 0x7f:
         *data = gicd_read_bitmap_reg(s, attrs, s->pending, mask_nsacr_ge1,
                                      offset - GICD_ISPENDR);
-        return MEMTX_OK;
+        return true;
     case GICD_ICPENDR ... GICD_ICPENDR + 0x7f:
         *data = gicd_read_bitmap_reg(s, attrs, s->pending, mask_nsacr_ge2,
                                      offset - GICD_ICPENDR);
-        return MEMTX_OK;
+        return true;
     case GICD_ISACTIVER ... GICD_ISACTIVER + 0x7f:
         *data = gicd_read_bitmap_reg(s, attrs, s->active, mask_nsacr_ge2,
                                      offset - GICD_ISACTIVER);
-        return MEMTX_OK;
+        return true;
     case GICD_ICACTIVER ... GICD_ICACTIVER + 0x7f:
         *data = gicd_read_bitmap_reg(s, attrs, s->active, mask_nsacr_ge2,
                                      offset - GICD_ICACTIVER);
-        return MEMTX_OK;
+        return true;
     case GICD_IPRIORITYR ... GICD_IPRIORITYR + 0x3ff:
     {
         int i, irq = offset - GICD_IPRIORITYR;
@@ -452,12 +465,12 @@ static MemTxResult gicd_readl(GICv3State *s, hwaddr offset,
             value |= gicd_read_ipriorityr(s, attrs, i);
         }
         *data = value;
-        return MEMTX_OK;
+        return true;
     }
     case GICD_ITARGETSR ... GICD_ITARGETSR + 0x3ff:
         /* RAZ/WI since affinity routing is always enabled */
         *data = 0;
-        return MEMTX_OK;
+        return true;
     case GICD_ICFGR ... GICD_ICFGR + 0xff:
     {
         /* Here only the even bits are used; odd bits are RES0 */
@@ -466,7 +479,7 @@ static MemTxResult gicd_readl(GICv3State *s, hwaddr offset,
 
         if (irq < GIC_INTERNAL || irq >= s->num_irq) {
             *data = 0;
-            return MEMTX_OK;
+            return true;
         }
 
         /* Since our edge_trigger bitmap is one bit per irq, we only need
@@ -478,7 +491,7 @@ static MemTxResult gicd_readl(GICv3State *s, hwaddr offset,
         value = extract32(value, (irq & 0x1f) ? 16 : 0, 16);
         value = half_shuffle32(value) << 1;
         *data = value;
-        return MEMTX_OK;
+        return true;
     }
     case GICD_IGRPMODR ... GICD_IGRPMODR + 0xff:
     {
@@ -489,16 +502,16 @@ static MemTxResult gicd_readl(GICv3State *s, hwaddr offset,
              * security enabled and this is an NS access
              */
             *data = 0;
-            return MEMTX_OK;
+            return true;
         }
         /* RAZ/WI for SGIs, PPIs, unimplemented irqs */
         irq = (offset - GICD_IGRPMODR) * 8;
         if (irq < GIC_INTERNAL || irq >= s->num_irq) {
             *data = 0;
-            return MEMTX_OK;
+            return true;
         }
         *data = *gic_bmp_ptr32(s->grpmod, irq);
-        return MEMTX_OK;
+        return true;
     }
     case GICD_NSACR ... GICD_NSACR + 0xff:
     {
@@ -507,7 +520,7 @@ static MemTxResult gicd_readl(GICv3State *s, hwaddr offset,
 
         if (irq < GIC_INTERNAL || irq >= s->num_irq) {
             *data = 0;
-            return MEMTX_OK;
+            return true;
         }
 
         if ((s->gicd_ctlr & GICD_CTLR_DS) || !attrs.secure) {
@@ -515,17 +528,17 @@ static MemTxResult gicd_readl(GICv3State *s, hwaddr offset,
              * security enabled and this is an NS access
              */
             *data = 0;
-            return MEMTX_OK;
+            return true;
         }
 
         *data = s->gicd_nsacr[irq / 16];
-        return MEMTX_OK;
+        return true;
     }
     case GICD_CPENDSGIR ... GICD_CPENDSGIR + 0xf:
     case GICD_SPENDSGIR ... GICD_SPENDSGIR + 0xf:
         /* RAZ/WI since affinity routing is always enabled */
         *data = 0;
-        return MEMTX_OK;
+        return true;
     case GICD_IROUTER ... GICD_IROUTER + 0x1fdf:
     {
         uint64_t r;
@@ -537,26 +550,26 @@ static MemTxResult gicd_readl(GICv3State *s, hwaddr offset,
         } else {
             *data = (uint32_t)r;
         }
-        return MEMTX_OK;
+        return true;
     }
     case GICD_IDREGS ... GICD_IDREGS + 0x2f:
         /* ID registers */
         *data = gicv3_idreg(offset - GICD_IDREGS);
-        return MEMTX_OK;
+        return true;
     case GICD_SGIR:
         /* WO registers, return unknown value */
         qemu_log_mask(LOG_GUEST_ERROR,
                       "%s: invalid guest read from WO register at offset "
                       TARGET_FMT_plx "\n", __func__, offset);
         *data = 0;
-        return MEMTX_OK;
+        return true;
     default:
-        return MEMTX_ERROR;
+        return false;
     }
 }
 
-static MemTxResult gicd_writel(GICv3State *s, hwaddr offset,
-                               uint64_t value, MemTxAttrs attrs)
+static bool gicd_writel(GICv3State *s, hwaddr offset,
+                        uint64_t value, MemTxAttrs attrs)
 {
     /* Almost all GICv3 distributor registers are 32-bit. Note that
      * RO registers must ignore writes, not abort.
@@ -600,68 +613,68 @@ static MemTxResult gicd_writel(GICv3State *s, hwaddr offset,
             s->gicd_ctlr &= ~(GICD_CTLR_EN_GRP1S | GICD_CTLR_ARE_NS);
         }
         gicv3_full_update(s);
-        return MEMTX_OK;
+        return true;
     }
     case GICD_STATUSR:
         /* RAZ/WI for our implementation */
-        return MEMTX_OK;
+        return true;
     case GICD_IGROUPR ... GICD_IGROUPR + 0x7f:
     {
         int irq;
 
         if (!attrs.secure && !(s->gicd_ctlr & GICD_CTLR_DS)) {
-            return MEMTX_OK;
+            return true;
         }
         /* RAZ/WI for SGIs, PPIs, unimplemented irqs */
         irq = (offset - GICD_IGROUPR) * 8;
         if (irq < GIC_INTERNAL || irq >= s->num_irq) {
-            return MEMTX_OK;
+            return true;
         }
         *gic_bmp_ptr32(s->group, irq) = value;
         gicv3_update(s, irq, 32);
-        return MEMTX_OK;
+        return true;
     }
     case GICD_ISENABLER ... GICD_ISENABLER + 0x7f:
         gicd_write_set_bitmap_reg(s, attrs, s->enabled, NULL,
                                   offset - GICD_ISENABLER, value);
-        return MEMTX_OK;
+        return true;
     case GICD_ICENABLER ... GICD_ICENABLER + 0x7f:
         gicd_write_clear_bitmap_reg(s, attrs, s->enabled, NULL,
                                     offset - GICD_ICENABLER, value);
-        return MEMTX_OK;
+        return true;
     case GICD_ISPENDR ... GICD_ISPENDR + 0x7f:
         gicd_write_set_bitmap_reg(s, attrs, s->pending, mask_nsacr_ge1,
                                   offset - GICD_ISPENDR, value);
-        return MEMTX_OK;
+        return true;
     case GICD_ICPENDR ... GICD_ICPENDR + 0x7f:
         gicd_write_clear_bitmap_reg(s, attrs, s->pending, mask_nsacr_ge2,
                                     offset - GICD_ICPENDR, value);
-        return MEMTX_OK;
+        return true;
     case GICD_ISACTIVER ... GICD_ISACTIVER + 0x7f:
         gicd_write_set_bitmap_reg(s, attrs, s->active, NULL,
                                   offset - GICD_ISACTIVER, value);
-        return MEMTX_OK;
+        return true;
     case GICD_ICACTIVER ... GICD_ICACTIVER + 0x7f:
         gicd_write_clear_bitmap_reg(s, attrs, s->active, NULL,
                                     offset - GICD_ICACTIVER, value);
-        return MEMTX_OK;
+        return true;
     case GICD_IPRIORITYR ... GICD_IPRIORITYR + 0x3ff:
     {
         int i, irq = offset - GICD_IPRIORITYR;
 
         if (irq < GIC_INTERNAL || irq + 3 >= s->num_irq) {
-            return MEMTX_OK;
+            return true;
         }
 
         for (i = irq; i < irq + 4; i++, value >>= 8) {
             gicd_write_ipriorityr(s, attrs, i, value);
         }
         gicv3_update(s, irq, 4);
-        return MEMTX_OK;
+        return true;
     }
     case GICD_ITARGETSR ... GICD_ITARGETSR + 0x3ff:
         /* RAZ/WI since affinity routing is always enabled */
-        return MEMTX_OK;
+        return true;
     case GICD_ICFGR ... GICD_ICFGR + 0xff:
     {
         /* Here only the odd bits are used; even bits are RES0 */
@@ -669,7 +682,7 @@ static MemTxResult gicd_writel(GICv3State *s, hwaddr offset,
         uint32_t mask, oldval;
 
         if (irq < GIC_INTERNAL || irq >= s->num_irq) {
-            return MEMTX_OK;
+            return true;
         }
 
         /* Since our edge_trigger bitmap is one bit per irq, our input
@@ -687,7 +700,7 @@ static MemTxResult gicd_writel(GICv3State *s, hwaddr offset,
         oldval = *gic_bmp_ptr32(s->edge_trigger, (irq & ~0x1f));
         value = (oldval & ~mask) | (value & mask);
         *gic_bmp_ptr32(s->edge_trigger, irq & ~0x1f) = value;
-        return MEMTX_OK;
+        return true;
     }
     case GICD_IGRPMODR ... GICD_IGRPMODR + 0xff:
     {
@@ -697,16 +710,16 @@ static MemTxResult gicd_writel(GICv3State *s, hwaddr offset,
             /* RAZ/WI if security disabled, or if
              * security enabled and this is an NS access
              */
-            return MEMTX_OK;
+            return true;
         }
         /* RAZ/WI for SGIs, PPIs, unimplemented irqs */
         irq = (offset - GICD_IGRPMODR) * 8;
         if (irq < GIC_INTERNAL || irq >= s->num_irq) {
-            return MEMTX_OK;
+            return true;
         }
         *gic_bmp_ptr32(s->grpmod, irq) = value;
         gicv3_update(s, irq, 32);
-        return MEMTX_OK;
+        return true;
     }
     case GICD_NSACR ... GICD_NSACR + 0xff:
     {
@@ -714,41 +727,41 @@ static MemTxResult gicd_writel(GICv3State *s, hwaddr offset,
         int irq = (offset - GICD_NSACR) * 4;
 
         if (irq < GIC_INTERNAL || irq >= s->num_irq) {
-            return MEMTX_OK;
+            return true;
         }
 
         if ((s->gicd_ctlr & GICD_CTLR_DS) || !attrs.secure) {
             /* RAZ/WI if security disabled, or if
              * security enabled and this is an NS access
              */
-            return MEMTX_OK;
+            return true;
         }
 
         s->gicd_nsacr[irq / 16] = value;
         /* No update required as this only affects access permission checks */
-        return MEMTX_OK;
+        return true;
     }
     case GICD_SGIR:
         /* RES0 if affinity routing is enabled */
-        return MEMTX_OK;
+        return true;
     case GICD_CPENDSGIR ... GICD_CPENDSGIR + 0xf:
     case GICD_SPENDSGIR ... GICD_SPENDSGIR + 0xf:
         /* RAZ/WI since affinity routing is always enabled */
-        return MEMTX_OK;
+        return true;
     case GICD_IROUTER ... GICD_IROUTER + 0x1fdf:
     {
         uint64_t r;
         int irq = (offset - GICD_IROUTER) / 8;
 
         if (irq < GIC_INTERNAL || irq >= s->num_irq) {
-            return MEMTX_OK;
+            return true;
         }
 
         /* Write half of the 64-bit register */
         r = gicd_read_irouter(s, attrs, irq);
         r = deposit64(r, (offset & 7) ? 32 : 0, 32, value);
         gicd_write_irouter(s, attrs, irq, r);
-        return MEMTX_OK;
+        return true;
     }
     case GICD_IDREGS ... GICD_IDREGS + 0x2f:
     case GICD_TYPER:
@@ -757,14 +770,14 @@ static MemTxResult gicd_writel(GICv3State *s, hwaddr offset,
         qemu_log_mask(LOG_GUEST_ERROR,
                       "%s: invalid guest write to RO register at offset "
                       TARGET_FMT_plx "\n", __func__, offset);
-        return MEMTX_OK;
+        return true;
     default:
-        return MEMTX_ERROR;
+        return false;
     }
 }
 
-static MemTxResult gicd_writeq(GICv3State *s, hwaddr offset,
-                               uint64_t value, MemTxAttrs attrs)
+static bool gicd_writeq(GICv3State *s, hwaddr offset,
+                        uint64_t value, MemTxAttrs attrs)
 {
     /* Our only 64-bit registers are GICD_IROUTER<n> */
     int irq;
@@ -773,14 +786,14 @@ static MemTxResult gicd_writeq(GICv3State *s, hwaddr offset,
     case GICD_IROUTER ... GICD_IROUTER + 0x1fdf:
         irq = (offset - GICD_IROUTER) / 8;
         gicd_write_irouter(s, attrs, irq, value);
-        return MEMTX_OK;
+        return true;
     default:
-        return MEMTX_ERROR;
+        return false;
     }
 }
 
-static MemTxResult gicd_readq(GICv3State *s, hwaddr offset,
-                              uint64_t *data, MemTxAttrs attrs)
+static bool gicd_readq(GICv3State *s, hwaddr offset,
+                       uint64_t *data, MemTxAttrs attrs)
 {
     /* Our only 64-bit registers are GICD_IROUTER<n> */
     int irq;
@@ -789,9 +802,9 @@ static MemTxResult gicd_readq(GICv3State *s, hwaddr offset,
     case GICD_IROUTER ... GICD_IROUTER + 0x1fdf:
         irq = (offset - GICD_IROUTER) / 8;
         *data = gicd_read_irouter(s, attrs, irq);
-        return MEMTX_OK;
+        return true;
     default:
-        return MEMTX_ERROR;
+        return false;
     }
 }
 
@@ -799,7 +812,7 @@ MemTxResult gicv3_dist_read(void *opaque, hwaddr offset, uint64_t *data,
                             unsigned size, MemTxAttrs attrs)
 {
     GICv3State *s = (GICv3State *)opaque;
-    MemTxResult r;
+    bool r;
 
     switch (size) {
     case 1:
@@ -815,11 +828,11 @@ MemTxResult gicv3_dist_read(void *opaque, hwaddr offset, uint64_t *data,
         r = gicd_readq(s, offset, data, attrs);
         break;
     default:
-        r = MEMTX_ERROR;
+        r = false;
         break;
     }
 
-    if (r == MEMTX_ERROR) {
+    if (!r) {
         qemu_log_mask(LOG_GUEST_ERROR,
                       "%s: invalid guest read at offset " TARGET_FMT_plx
                       "size %u\n", __func__, offset, size);
@@ -829,19 +842,18 @@ MemTxResult gicv3_dist_read(void *opaque, hwaddr offset, uint64_t *data,
          * trigger the guest-error logging but don't return it to
          * the caller, or we'll cause a spurious guest data abort.
          */
-        r = MEMTX_OK;
         *data = 0;
     } else {
         trace_gicv3_dist_read(offset, *data, size, attrs.secure);
     }
-    return r;
+    return MEMTX_OK;
 }
 
 MemTxResult gicv3_dist_write(void *opaque, hwaddr offset, uint64_t data,
                              unsigned size, MemTxAttrs attrs)
 {
     GICv3State *s = (GICv3State *)opaque;
-    MemTxResult r;
+    bool r;
 
     switch (size) {
     case 1:
@@ -857,11 +869,11 @@ MemTxResult gicv3_dist_write(void *opaque, hwaddr offset, uint64_t data,
         r = gicd_writeq(s, offset, data, attrs);
         break;
     default:
-        r = MEMTX_ERROR;
+        r = false;
         break;
     }
 
-    if (r == MEMTX_ERROR) {
+    if (!r) {
         qemu_log_mask(LOG_GUEST_ERROR,
                       "%s: invalid guest write at offset " TARGET_FMT_plx
                       "size %u\n", __func__, offset, size);
@@ -871,11 +883,10 @@ MemTxResult gicv3_dist_write(void *opaque, hwaddr offset, uint64_t data,
          * trigger the guest-error logging but don't return it to
          * the caller, or we'll cause a spurious guest data abort.
          */
-        r = MEMTX_OK;
     } else {
         trace_gicv3_dist_write(offset, data, size, attrs.secure);
     }
-    return r;
+    return MEMTX_OK;
 }
 
 void gicv3_dist_set_irq(GICv3State *s, int irq, int level)
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 05/51] hw: Add compat machines for 6.2
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (3 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 04/51] hw/intc/arm_gicv3: Replace mis-used MEMTX_* constants by booleans Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 06/51] target/arm: Implement MVE VADD (floating-point) Peter Maydell
                   ` (46 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

From: Yanan Wang <wangyanan55@huawei.com>

Add 6.2 machine types for arm/i440fx/q35/s390x/spapr.

Signed-off-by: Yanan Wang <wangyanan55@huawei.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Pankaj Gupta <pankaj.gupta@ionos.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 include/hw/boards.h        |  3 +++
 include/hw/i386/pc.h       |  3 +++
 hw/arm/virt.c              | 11 +++++++++--
 hw/core/machine.c          |  3 +++
 hw/i386/pc.c               |  3 +++
 hw/i386/pc_piix.c          | 14 +++++++++++++-
 hw/i386/pc_q35.c           | 13 ++++++++++++-
 hw/ppc/spapr.c             | 17 ++++++++++++++---
 hw/s390x/s390-virtio-ccw.c | 14 +++++++++++++-
 9 files changed, 73 insertions(+), 8 deletions(-)

diff --git a/include/hw/boards.h b/include/hw/boards.h
index accd6eff35a..463a5514f97 100644
--- a/include/hw/boards.h
+++ b/include/hw/boards.h
@@ -353,6 +353,9 @@ struct MachineState {
     } \
     type_init(machine_initfn##_register_types)
 
+extern GlobalProperty hw_compat_6_1[];
+extern const size_t hw_compat_6_1_len;
+
 extern GlobalProperty hw_compat_6_0[];
 extern const size_t hw_compat_6_0_len;
 
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index 88dffe75172..97b4ab79b53 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -196,6 +196,9 @@ void pc_system_parse_ovmf_flash(uint8_t *flash_ptr, size_t flash_size);
 void pc_madt_cpu_entry(AcpiDeviceIf *adev, int uid,
                        const CPUArchIdList *apic_ids, GArray *entry);
 
+extern GlobalProperty pc_compat_6_1[];
+extern const size_t pc_compat_6_1_len;
+
 extern GlobalProperty pc_compat_6_0[];
 extern const size_t pc_compat_6_0_len;
 
diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index 86c8a4ca3d7..dbb77b59974 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -2783,10 +2783,17 @@ static void machvirt_machine_init(void)
 }
 type_init(machvirt_machine_init);
 
-static void virt_machine_6_1_options(MachineClass *mc)
+static void virt_machine_6_2_options(MachineClass *mc)
 {
 }
-DEFINE_VIRT_MACHINE_AS_LATEST(6, 1)
+DEFINE_VIRT_MACHINE_AS_LATEST(6, 2)
+
+static void virt_machine_6_1_options(MachineClass *mc)
+{
+    virt_machine_6_2_options(mc);
+    compat_props_add(mc->compat_props, hw_compat_6_1, hw_compat_6_1_len);
+}
+DEFINE_VIRT_MACHINE(6, 1)
 
 static void virt_machine_6_0_options(MachineClass *mc)
 {
diff --git a/hw/core/machine.c b/hw/core/machine.c
index 54e040587dd..067f42b528f 100644
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -37,6 +37,9 @@
 #include "hw/virtio/virtio.h"
 #include "hw/virtio/virtio-pci.h"
 
+GlobalProperty hw_compat_6_1[] = {};
+const size_t hw_compat_6_1_len = G_N_ELEMENTS(hw_compat_6_1);
+
 GlobalProperty hw_compat_6_0[] = {
     { "gpex-pcihost", "allow-unmapped-accesses", "false" },
     { "i8042", "extended-state", "false"},
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 102b2239468..1276bfeee45 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -93,6 +93,9 @@
 #include "trace.h"
 #include CONFIG_DEVICES
 
+GlobalProperty pc_compat_6_1[] = {};
+const size_t pc_compat_6_1_len = G_N_ELEMENTS(pc_compat_6_1);
+
 GlobalProperty pc_compat_6_0[] = {
     { "qemu64" "-" TYPE_X86_CPU, "family", "6" },
     { "qemu64" "-" TYPE_X86_CPU, "model", "6" },
diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index 1bc30167acc..c5da7739cef 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -412,7 +412,7 @@ static void pc_i440fx_machine_options(MachineClass *m)
     machine_class_allow_dynamic_sysbus_dev(m, TYPE_VMBUS_BRIDGE);
 }
 
-static void pc_i440fx_6_1_machine_options(MachineClass *m)
+static void pc_i440fx_6_2_machine_options(MachineClass *m)
 {
     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
     pc_i440fx_machine_options(m);
@@ -421,6 +421,18 @@ static void pc_i440fx_6_1_machine_options(MachineClass *m)
     pcmc->default_cpu_version = 1;
 }
 
+DEFINE_I440FX_MACHINE(v6_2, "pc-i440fx-6.2", NULL,
+                      pc_i440fx_6_2_machine_options);
+
+static void pc_i440fx_6_1_machine_options(MachineClass *m)
+{
+    pc_i440fx_6_2_machine_options(m);
+    m->alias = NULL;
+    m->is_default = false;
+    compat_props_add(m->compat_props, hw_compat_6_1, hw_compat_6_1_len);
+    compat_props_add(m->compat_props, pc_compat_6_1, pc_compat_6_1_len);
+}
+
 DEFINE_I440FX_MACHINE(v6_1, "pc-i440fx-6.1", NULL,
                       pc_i440fx_6_1_machine_options);
 
diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
index eeb0b185b11..565fadce540 100644
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -354,7 +354,7 @@ static void pc_q35_machine_options(MachineClass *m)
     m->max_cpus = 288;
 }
 
-static void pc_q35_6_1_machine_options(MachineClass *m)
+static void pc_q35_6_2_machine_options(MachineClass *m)
 {
     PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
     pc_q35_machine_options(m);
@@ -362,6 +362,17 @@ static void pc_q35_6_1_machine_options(MachineClass *m)
     pcmc->default_cpu_version = 1;
 }
 
+DEFINE_Q35_MACHINE(v6_2, "pc-q35-6.2", NULL,
+                   pc_q35_6_2_machine_options);
+
+static void pc_q35_6_1_machine_options(MachineClass *m)
+{
+    pc_q35_6_2_machine_options(m);
+    m->alias = NULL;
+    compat_props_add(m->compat_props, hw_compat_6_1, hw_compat_6_1_len);
+    compat_props_add(m->compat_props, pc_compat_6_1, pc_compat_6_1_len);
+}
+
 DEFINE_Q35_MACHINE(v6_1, "pc-q35-6.1", NULL,
                    pc_q35_6_1_machine_options);
 
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index 81699d4f8be..d39fd4e6449 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -4686,14 +4686,25 @@ static void spapr_machine_latest_class_options(MachineClass *mc)
     type_init(spapr_machine_register_##suffix)
 
 /*
- * pseries-6.1
+ * pseries-6.2
  */
-static void spapr_machine_6_1_class_options(MachineClass *mc)
+static void spapr_machine_6_2_class_options(MachineClass *mc)
 {
     /* Defaults for the latest behaviour inherited from the base class */
 }
 
-DEFINE_SPAPR_MACHINE(6_1, "6.1", true);
+DEFINE_SPAPR_MACHINE(6_2, "6.2", true);
+
+/*
+ * pseries-6.1
+ */
+static void spapr_machine_6_1_class_options(MachineClass *mc)
+{
+    spapr_machine_6_2_class_options(mc);
+    compat_props_add(mc->compat_props, hw_compat_6_1, hw_compat_6_1_len);
+}
+
+DEFINE_SPAPR_MACHINE(6_1, "6.1", false);
 
 /*
  * pseries-6.0
diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c
index e4b18aef496..4d25278cf20 100644
--- a/hw/s390x/s390-virtio-ccw.c
+++ b/hw/s390x/s390-virtio-ccw.c
@@ -791,14 +791,26 @@ bool css_migration_enabled(void)
     }                                                                         \
     type_init(ccw_machine_register_##suffix)
 
+static void ccw_machine_6_2_instance_options(MachineState *machine)
+{
+}
+
+static void ccw_machine_6_2_class_options(MachineClass *mc)
+{
+}
+DEFINE_CCW_MACHINE(6_2, "6.2", true);
+
 static void ccw_machine_6_1_instance_options(MachineState *machine)
 {
+    ccw_machine_6_2_instance_options(machine);
 }
 
 static void ccw_machine_6_1_class_options(MachineClass *mc)
 {
+    ccw_machine_6_2_class_options(mc);
+    compat_props_add(mc->compat_props, hw_compat_6_1, hw_compat_6_1_len);
 }
-DEFINE_CCW_MACHINE(6_1, "6.1", true);
+DEFINE_CCW_MACHINE(6_1, "6.1", false);
 
 static void ccw_machine_6_0_instance_options(MachineState *machine)
 {
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 06/51] target/arm: Implement MVE VADD (floating-point)
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (4 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 05/51] hw: Add compat machines for 6.2 Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 07/51] target/arm: Implement MVE VSUB, VMUL, VABD, VMAXNM, VMINNM Peter Maydell
                   ` (45 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

Implement the MVE VADD (floating-point) insn.  Handling of this is
similar to the 2-operand integer insns, except that we must take care
to only update the floating point exception status if the least
significant bit of the predicate mask for each element is active.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/helper-mve.h     |  3 +++
 target/arm/translate.h      |  6 ++++++
 target/arm/mve.decode       | 10 ++++++++++
 target/arm/mve_helper.c     | 40 +++++++++++++++++++++++++++++++++++++
 target/arm/translate-mve.c  | 17 ++++++++++++++++
 target/arm/translate-neon.c |  6 ------
 6 files changed, 76 insertions(+), 6 deletions(-)

diff --git a/target/arm/helper-mve.h b/target/arm/helper-mve.h
index 3db9b15f121..32fd2e1f9be 100644
--- a/target/arm/helper-mve.h
+++ b/target/arm/helper-mve.h
@@ -410,6 +410,9 @@ DEF_HELPER_FLAGS_4(mve_vhcadd270b, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
 DEF_HELPER_FLAGS_4(mve_vhcadd270h, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
 DEF_HELPER_FLAGS_4(mve_vhcadd270w, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
 
+DEF_HELPER_FLAGS_4(mve_vfaddh, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vfadds, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+
 DEF_HELPER_FLAGS_4(mve_vadd_scalarb, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
 DEF_HELPER_FLAGS_4(mve_vadd_scalarh, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
 DEF_HELPER_FLAGS_4(mve_vadd_scalarw, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
diff --git a/target/arm/translate.h b/target/arm/translate.h
index 241596c5bda..8636c20c3b4 100644
--- a/target/arm/translate.h
+++ b/target/arm/translate.h
@@ -181,6 +181,12 @@ static inline int rsub_8(DisasContext *s, int x)
     return 8 - x;
 }
 
+static inline int neon_3same_fp_size(DisasContext *s, int x)
+{
+    /* Convert 0==fp32, 1==fp16 into a MO_* value */
+    return MO_32 - x;
+}
+
 static inline int arm_dc_feature(DisasContext *dc, int feature)
 {
     return (dc->features & (1ULL << feature)) != 0;
diff --git a/target/arm/mve.decode b/target/arm/mve.decode
index 87446816293..e211cb016c6 100644
--- a/target/arm/mve.decode
+++ b/target/arm/mve.decode
@@ -26,6 +26,10 @@
 # VQDMULL has size in bit 28: 0 for 16 bit, 1 for 32 bit
 %size_28 28:1 !function=plus_1
 
+# 2 operand fp insns have size in bit 20: 1 for 16 bit, 0 for 32 bit,
+# like Neon FP insns.
+%2op_fp_size 20:1 !function=neon_3same_fp_size
+
 # 1imm format immediate
 %imm_28_16_0 28:1 16:3 0:4
 
@@ -118,6 +122,9 @@
 
 @vmaxv .... .... .... size:2 .. rda:4 .... .... .... &vmaxv qm=%qm
 
+@2op_fp .... .... .... .... .... .... .... .... &2op \
+        qd=%qd qn=%qn qm=%qm size=%2op_fp_size
+
 # Vector loads and stores
 
 # Widening loads and narrowing stores:
@@ -615,3 +622,6 @@ VCMPGE_scalar     1111 1110 0 . .. ... 1 ... 1 1111 0 1 0 0 .... @vcmp_scalar
 VCMPLT_scalar     1111 1110 0 . .. ... 1 ... 1 1111 1 1 0 0 .... @vcmp_scalar
 VCMPGT_scalar     1111 1110 0 . .. ... 1 ... 1 1111 0 1 1 0 .... @vcmp_scalar
 VCMPLE_scalar     1111 1110 0 . .. ... 1 ... 1 1111 1 1 1 0 .... @vcmp_scalar
+
+# 2-operand FP
+VADD_fp           1110 1111 0 . 0 . ... 0 ... 0 1101 . 1 . 0 ... 0 @2op_fp
diff --git a/target/arm/mve_helper.c b/target/arm/mve_helper.c
index c2826eb5f9f..abca7c0b2ab 100644
--- a/target/arm/mve_helper.c
+++ b/target/arm/mve_helper.c
@@ -25,6 +25,7 @@
 #include "exec/cpu_ldst.h"
 #include "exec/exec-all.h"
 #include "tcg/tcg.h"
+#include "fpu/softfloat.h"
 
 static uint16_t mve_eci_mask(CPUARMState *env)
 {
@@ -2798,3 +2799,42 @@ DO_VMAXMINA(vmaxaw, 4, int32_t, uint32_t, DO_MAX)
 DO_VMAXMINA(vminab, 1, int8_t, uint8_t, DO_MIN)
 DO_VMAXMINA(vminah, 2, int16_t, uint16_t, DO_MIN)
 DO_VMAXMINA(vminaw, 4, int32_t, uint32_t, DO_MIN)
+
+/*
+ * 2-operand floating point. Note that if an element is partially
+ * predicated we must do the FP operation to update the non-predicated
+ * bytes, but we must be careful to avoid updating the FP exception
+ * state unless byte 0 of the element was unpredicated.
+ */
+#define DO_2OP_FP(OP, ESIZE, TYPE, FN)                                  \
+    void HELPER(glue(mve_, OP))(CPUARMState *env,                       \
+                                void *vd, void *vn, void *vm)           \
+    {                                                                   \
+        TYPE *d = vd, *n = vn, *m = vm;                                 \
+        TYPE r;                                                         \
+        uint16_t mask = mve_element_mask(env);                          \
+        unsigned e;                                                     \
+        float_status *fpst;                                             \
+        float_status scratch_fpst;                                      \
+        for (e = 0; e < 16 / ESIZE; e++, mask >>= ESIZE) {              \
+            if ((mask & MAKE_64BIT_MASK(0, ESIZE)) == 0) {              \
+                continue;                                               \
+            }                                                           \
+            fpst = (ESIZE == 2) ? &env->vfp.standard_fp_status_f16 :    \
+                &env->vfp.standard_fp_status;                           \
+            if (!(mask & 1)) {                                          \
+                /* We need the result but without updating flags */     \
+                scratch_fpst = *fpst;                                   \
+                fpst = &scratch_fpst;                                   \
+            }                                                           \
+            r = FN(n[H##ESIZE(e)], m[H##ESIZE(e)], fpst);               \
+            mergemask(&d[H##ESIZE(e)], r, mask);                        \
+        }                                                               \
+        mve_advance_vpt(env);                                           \
+    }
+
+#define DO_2OP_FP_ALL(OP, FN)                  \
+    DO_2OP_FP(OP##h, 2, float16, float16_##FN) \
+    DO_2OP_FP(OP##s, 4, float32, float32_##FN)
+
+DO_2OP_FP_ALL(vfadd, add)
diff --git a/target/arm/translate-mve.c b/target/arm/translate-mve.c
index 78229c44c68..d2c40ede564 100644
--- a/target/arm/translate-mve.c
+++ b/target/arm/translate-mve.c
@@ -831,6 +831,23 @@ static bool trans_VSBCI(DisasContext *s, arg_2op *a)
     return do_2op(s, a, gen_helper_mve_vsbci);
 }
 
+#define DO_2OP_FP(INSN, FN)                                     \
+    static bool trans_##INSN(DisasContext *s, arg_2op *a)       \
+    {                                                           \
+        static MVEGenTwoOpFn * const fns[] = {                  \
+            NULL,                                               \
+            gen_helper_mve_##FN##h,                             \
+            gen_helper_mve_##FN##s,                             \
+            NULL,                                               \
+        };                                                      \
+        if (!dc_isar_feature(aa32_mve_fp, s)) {                 \
+            return false;                                       \
+        }                                                       \
+        return do_2op(s, a, fns[a->size]);                      \
+    }
+
+DO_2OP_FP(VADD_fp, vfadd)
+
 static bool do_2op_scalar(DisasContext *s, arg_2scalar *a,
                           MVEGenTwoOpScalarFn fn)
 {
diff --git a/target/arm/translate-neon.c b/target/arm/translate-neon.c
index c53ab20fa48..dd43de558e4 100644
--- a/target/arm/translate-neon.c
+++ b/target/arm/translate-neon.c
@@ -28,12 +28,6 @@
 #include "translate.h"
 #include "translate-a32.h"
 
-static inline int neon_3same_fp_size(DisasContext *s, int x)
-{
-    /* Convert 0==fp32, 1==fp16 into a MO_* value */
-    return MO_32 - x;
-}
-
 /* Include the generated Neon decoder */
 #include "decode-neon-dp.c.inc"
 #include "decode-neon-ls.c.inc"
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 07/51] target/arm: Implement MVE VSUB, VMUL, VABD, VMAXNM, VMINNM
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (5 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 06/51] target/arm: Implement MVE VADD (floating-point) Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 08/51] target/arm: Implement MVE VCADD Peter Maydell
                   ` (44 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

Implement more simple 2-operand floating point MVE insns.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/helper-mve.h    | 15 +++++++++++++++
 target/arm/mve.decode      |  6 ++++++
 target/arm/mve_helper.c    | 16 ++++++++++++++++
 target/arm/translate-mve.c |  5 +++++
 4 files changed, 42 insertions(+)

diff --git a/target/arm/helper-mve.h b/target/arm/helper-mve.h
index 32fd2e1f9be..370876d7934 100644
--- a/target/arm/helper-mve.h
+++ b/target/arm/helper-mve.h
@@ -413,6 +413,21 @@ DEF_HELPER_FLAGS_4(mve_vhcadd270w, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
 DEF_HELPER_FLAGS_4(mve_vfaddh, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
 DEF_HELPER_FLAGS_4(mve_vfadds, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
 
+DEF_HELPER_FLAGS_4(mve_vfsubh, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vfsubs, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+
+DEF_HELPER_FLAGS_4(mve_vfmulh, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vfmuls, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+
+DEF_HELPER_FLAGS_4(mve_vfabdh, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vfabds, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+
+DEF_HELPER_FLAGS_4(mve_vmaxnmh, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vmaxnms, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+
+DEF_HELPER_FLAGS_4(mve_vminnmh, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vminnms, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+
 DEF_HELPER_FLAGS_4(mve_vadd_scalarb, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
 DEF_HELPER_FLAGS_4(mve_vadd_scalarh, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
 DEF_HELPER_FLAGS_4(mve_vadd_scalarw, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
diff --git a/target/arm/mve.decode b/target/arm/mve.decode
index e211cb016c6..cdbfaa4245b 100644
--- a/target/arm/mve.decode
+++ b/target/arm/mve.decode
@@ -625,3 +625,9 @@ VCMPLE_scalar     1111 1110 0 . .. ... 1 ... 1 1111 1 1 1 0 .... @vcmp_scalar
 
 # 2-operand FP
 VADD_fp           1110 1111 0 . 0 . ... 0 ... 0 1101 . 1 . 0 ... 0 @2op_fp
+VSUB_fp           1110 1111 0 . 1 . ... 0 ... 0 1101 . 1 . 0 ... 0 @2op_fp
+VMUL_fp           1111 1111 0 . 0 . ... 0 ... 0 1101 . 1 . 1 ... 0 @2op_fp
+VABD_fp           1111 1111 0 . 1 . ... 0 ... 0 1101 . 1 . 0 ... 0 @2op_fp
+
+VMAXNM            1111 1111 0 . 0 . ... 0 ... 0 1111 . 1 . 1 ... 0 @2op_fp
+VMINNM            1111 1111 0 . 1 . ... 0 ... 0 1111 . 1 . 1 ... 0 @2op_fp
diff --git a/target/arm/mve_helper.c b/target/arm/mve_helper.c
index abca7c0b2ab..d6bc686c985 100644
--- a/target/arm/mve_helper.c
+++ b/target/arm/mve_helper.c
@@ -2838,3 +2838,19 @@ DO_VMAXMINA(vminaw, 4, int32_t, uint32_t, DO_MIN)
     DO_2OP_FP(OP##s, 4, float32, float32_##FN)
 
 DO_2OP_FP_ALL(vfadd, add)
+DO_2OP_FP_ALL(vfsub, sub)
+DO_2OP_FP_ALL(vfmul, mul)
+
+static inline float16 float16_abd(float16 a, float16 b, float_status *s)
+{
+    return float16_abs(float16_sub(a, b, s));
+}
+
+static inline float32 float32_abd(float32 a, float32 b, float_status *s)
+{
+    return float32_abs(float32_sub(a, b, s));
+}
+
+DO_2OP_FP_ALL(vfabd, abd)
+DO_2OP_FP_ALL(vmaxnm, maxnum)
+DO_2OP_FP_ALL(vminnm, minnum)
diff --git a/target/arm/translate-mve.c b/target/arm/translate-mve.c
index d2c40ede564..98282335820 100644
--- a/target/arm/translate-mve.c
+++ b/target/arm/translate-mve.c
@@ -847,6 +847,11 @@ static bool trans_VSBCI(DisasContext *s, arg_2op *a)
     }
 
 DO_2OP_FP(VADD_fp, vfadd)
+DO_2OP_FP(VSUB_fp, vfsub)
+DO_2OP_FP(VMUL_fp, vfmul)
+DO_2OP_FP(VABD_fp, vfabd)
+DO_2OP_FP(VMAXNM, vmaxnm)
+DO_2OP_FP(VMINNM, vminnm)
 
 static bool do_2op_scalar(DisasContext *s, arg_2scalar *a,
                           MVEGenTwoOpScalarFn fn)
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 08/51] target/arm: Implement MVE VCADD
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (6 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 07/51] target/arm: Implement MVE VSUB, VMUL, VABD, VMAXNM, VMINNM Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 09/51] target/arm: Implement MVE VFMA and VFMS Peter Maydell
                   ` (43 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

Implement the MVE VCADD insn.  Note that here the size bit is the
opposite sense to the other 2-operand fp insns.

We don't check for the sz == 1 && Qd == Qm UNPREDICTABLE case,
because that would mean we can't use the DO_2OP_FP macro in
translate-mve.c.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/helper-mve.h    |  6 ++++++
 target/arm/mve.decode      |  8 ++++++++
 target/arm/mve_helper.c    | 40 ++++++++++++++++++++++++++++++++++++++
 target/arm/translate-mve.c |  4 +++-
 4 files changed, 57 insertions(+), 1 deletion(-)

diff --git a/target/arm/helper-mve.h b/target/arm/helper-mve.h
index 370876d7934..42eba8ea96d 100644
--- a/target/arm/helper-mve.h
+++ b/target/arm/helper-mve.h
@@ -428,6 +428,12 @@ DEF_HELPER_FLAGS_4(mve_vmaxnms, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
 DEF_HELPER_FLAGS_4(mve_vminnmh, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
 DEF_HELPER_FLAGS_4(mve_vminnms, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
 
+DEF_HELPER_FLAGS_4(mve_vfcadd90h, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vfcadd90s, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+
+DEF_HELPER_FLAGS_4(mve_vfcadd270h, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vfcadd270s, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+
 DEF_HELPER_FLAGS_4(mve_vadd_scalarb, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
 DEF_HELPER_FLAGS_4(mve_vadd_scalarh, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
 DEF_HELPER_FLAGS_4(mve_vadd_scalarw, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
diff --git a/target/arm/mve.decode b/target/arm/mve.decode
index cdbfaa4245b..c728c7089ac 100644
--- a/target/arm/mve.decode
+++ b/target/arm/mve.decode
@@ -29,6 +29,8 @@
 # 2 operand fp insns have size in bit 20: 1 for 16 bit, 0 for 32 bit,
 # like Neon FP insns.
 %2op_fp_size 20:1 !function=neon_3same_fp_size
+# VCADD is an exception, where bit 20 is 0 for 16 bit and 1 for 32 bit
+%2op_fp_size_rev 20:1 !function=plus_1
 
 # 1imm format immediate
 %imm_28_16_0 28:1 16:3 0:4
@@ -125,6 +127,9 @@
 @2op_fp .... .... .... .... .... .... .... .... &2op \
         qd=%qd qn=%qn qm=%qm size=%2op_fp_size
 
+@2op_fp_size_rev .... .... .... .... .... .... .... .... &2op \
+                 qd=%qd qn=%qn qm=%qm size=%2op_fp_size_rev
+
 # Vector loads and stores
 
 # Widening loads and narrowing stores:
@@ -631,3 +636,6 @@ VABD_fp           1111 1111 0 . 1 . ... 0 ... 0 1101 . 1 . 0 ... 0 @2op_fp
 
 VMAXNM            1111 1111 0 . 0 . ... 0 ... 0 1111 . 1 . 1 ... 0 @2op_fp
 VMINNM            1111 1111 0 . 1 . ... 0 ... 0 1111 . 1 . 1 ... 0 @2op_fp
+
+VCADD90_fp        1111 1100 1 . 0 . ... 0 ... 0 1000 . 1 . 0 ... 0 @2op_fp_size_rev
+VCADD270_fp       1111 1101 1 . 0 . ... 0 ... 0 1000 . 1 . 0 ... 0 @2op_fp_size_rev
diff --git a/target/arm/mve_helper.c b/target/arm/mve_helper.c
index d6bc686c985..2cc8b3e11b7 100644
--- a/target/arm/mve_helper.c
+++ b/target/arm/mve_helper.c
@@ -2854,3 +2854,43 @@ static inline float32 float32_abd(float32 a, float32 b, float_status *s)
 DO_2OP_FP_ALL(vfabd, abd)
 DO_2OP_FP_ALL(vmaxnm, maxnum)
 DO_2OP_FP_ALL(vminnm, minnum)
+
+#define DO_VCADD_FP(OP, ESIZE, TYPE, FN0, FN1)                          \
+    void HELPER(glue(mve_, OP))(CPUARMState *env,                       \
+                                void *vd, void *vn, void *vm)           \
+    {                                                                   \
+        TYPE *d = vd, *n = vn, *m = vm;                                 \
+        TYPE r[16 / ESIZE];                                             \
+        uint16_t tm, mask = mve_element_mask(env);                      \
+        unsigned e;                                                     \
+        float_status *fpst;                                             \
+        float_status scratch_fpst;                                      \
+        /* Calculate all results first to avoid overwriting inputs */   \
+        for (e = 0, tm = mask; e < 16 / ESIZE; e++, tm >>= ESIZE) {     \
+            if ((tm & MAKE_64BIT_MASK(0, ESIZE)) == 0) {                \
+                r[e] = 0;                                               \
+                continue;                                               \
+            }                                                           \
+            fpst = (ESIZE == 2) ? &env->vfp.standard_fp_status_f16 :    \
+                &env->vfp.standard_fp_status;                           \
+            if (!(tm & 1)) {                                            \
+                /* We need the result but without updating flags */     \
+                scratch_fpst = *fpst;                                   \
+                fpst = &scratch_fpst;                                   \
+            }                                                           \
+            if (!(e & 1)) {                                             \
+                r[e] = FN0(n[H##ESIZE(e)], m[H##ESIZE(e + 1)], fpst);   \
+            } else {                                                    \
+                r[e] = FN1(n[H##ESIZE(e)], m[H##ESIZE(e - 1)], fpst);   \
+            }                                                           \
+        }                                                               \
+        for (e = 0; e < 16 / ESIZE; e++, mask >>= ESIZE) {              \
+            mergemask(&d[H##ESIZE(e)], r[e], mask);                     \
+        }                                                               \
+        mve_advance_vpt(env);                                           \
+    }
+
+DO_VCADD_FP(vfcadd90h, 2, float16, float16_sub, float16_add)
+DO_VCADD_FP(vfcadd90s, 4, float32, float32_sub, float32_add)
+DO_VCADD_FP(vfcadd270h, 2, float16, float16_add, float16_sub)
+DO_VCADD_FP(vfcadd270s, 4, float32, float32_add, float32_sub)
diff --git a/target/arm/translate-mve.c b/target/arm/translate-mve.c
index 98282335820..6203e3ff916 100644
--- a/target/arm/translate-mve.c
+++ b/target/arm/translate-mve.c
@@ -852,6 +852,8 @@ DO_2OP_FP(VMUL_fp, vfmul)
 DO_2OP_FP(VABD_fp, vfabd)
 DO_2OP_FP(VMAXNM, vmaxnm)
 DO_2OP_FP(VMINNM, vminnm)
+DO_2OP_FP(VCADD90_fp, vfcadd90)
+DO_2OP_FP(VCADD270_fp, vfcadd270)
 
 static bool do_2op_scalar(DisasContext *s, arg_2scalar *a,
                           MVEGenTwoOpScalarFn fn)
@@ -883,7 +885,7 @@ static bool do_2op_scalar(DisasContext *s, arg_2scalar *a,
     return true;
 }
 
-#define DO_2OP_SCALAR(INSN, FN) \
+#define DO_2OP_SCALAR(INSN, FN)                                 \
     static bool trans_##INSN(DisasContext *s, arg_2scalar *a)   \
     {                                                           \
         static MVEGenTwoOpScalarFn * const fns[] = {            \
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 09/51] target/arm: Implement MVE VFMA and VFMS
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (7 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 08/51] target/arm: Implement MVE VCADD Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 10/51] target/arm: Implement MVE VCMUL and VCMLA Peter Maydell
                   ` (42 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

Implement the MVE VFMA and VFMS insns.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/helper-mve.h    |  6 ++++++
 target/arm/mve.decode      |  3 +++
 target/arm/mve_helper.c    | 37 +++++++++++++++++++++++++++++++++++++
 target/arm/translate-mve.c |  2 ++
 4 files changed, 48 insertions(+)

diff --git a/target/arm/helper-mve.h b/target/arm/helper-mve.h
index 42eba8ea96d..c230610d25c 100644
--- a/target/arm/helper-mve.h
+++ b/target/arm/helper-mve.h
@@ -434,6 +434,12 @@ DEF_HELPER_FLAGS_4(mve_vfcadd90s, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
 DEF_HELPER_FLAGS_4(mve_vfcadd270h, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
 DEF_HELPER_FLAGS_4(mve_vfcadd270s, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
 
+DEF_HELPER_FLAGS_4(mve_vfmah, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vfmas, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+
+DEF_HELPER_FLAGS_4(mve_vfmsh, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vfmss, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+
 DEF_HELPER_FLAGS_4(mve_vadd_scalarb, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
 DEF_HELPER_FLAGS_4(mve_vadd_scalarh, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
 DEF_HELPER_FLAGS_4(mve_vadd_scalarw, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
diff --git a/target/arm/mve.decode b/target/arm/mve.decode
index c728c7089ac..3a2056f6b34 100644
--- a/target/arm/mve.decode
+++ b/target/arm/mve.decode
@@ -639,3 +639,6 @@ VMINNM            1111 1111 0 . 1 . ... 0 ... 0 1111 . 1 . 1 ... 0 @2op_fp
 
 VCADD90_fp        1111 1100 1 . 0 . ... 0 ... 0 1000 . 1 . 0 ... 0 @2op_fp_size_rev
 VCADD270_fp       1111 1101 1 . 0 . ... 0 ... 0 1000 . 1 . 0 ... 0 @2op_fp_size_rev
+
+VFMA              1110 1111 0 . 0 . ... 0 ... 0 1100 . 1 . 1 ... 0 @2op_fp
+VFMS              1110 1111 0 . 1 . ... 0 ... 0 1100 . 1 . 1 ... 0 @2op_fp
diff --git a/target/arm/mve_helper.c b/target/arm/mve_helper.c
index 2cc8b3e11b7..d7f250a4455 100644
--- a/target/arm/mve_helper.c
+++ b/target/arm/mve_helper.c
@@ -2894,3 +2894,40 @@ DO_VCADD_FP(vfcadd90h, 2, float16, float16_sub, float16_add)
 DO_VCADD_FP(vfcadd90s, 4, float32, float32_sub, float32_add)
 DO_VCADD_FP(vfcadd270h, 2, float16, float16_add, float16_sub)
 DO_VCADD_FP(vfcadd270s, 4, float32, float32_add, float32_sub)
+
+#define DO_VFMA(OP, ESIZE, TYPE, CHS)                                   \
+    void HELPER(glue(mve_, OP))(CPUARMState *env,                       \
+                                void *vd, void *vn, void *vm)           \
+    {                                                                   \
+        TYPE *d = vd, *n = vn, *m = vm;                                 \
+        TYPE r;                                                         \
+        uint16_t mask = mve_element_mask(env);                          \
+        unsigned e;                                                     \
+        float_status *fpst;                                             \
+        float_status scratch_fpst;                                      \
+        for (e = 0; e < 16 / ESIZE; e++, mask >>= ESIZE) {              \
+            if ((mask & MAKE_64BIT_MASK(0, ESIZE)) == 0) {              \
+                continue;                                               \
+            }                                                           \
+            fpst = (ESIZE == 2) ? &env->vfp.standard_fp_status_f16 :    \
+                &env->vfp.standard_fp_status;                           \
+            if (!(mask & 1)) {                                          \
+                /* We need the result but without updating flags */     \
+                scratch_fpst = *fpst;                                   \
+                fpst = &scratch_fpst;                                   \
+            }                                                           \
+            r = n[H##ESIZE(e)];                                         \
+            if (CHS) {                                                  \
+                r = TYPE##_chs(r);                                      \
+            }                                                           \
+            r = TYPE##_muladd(r, m[H##ESIZE(e)], d[H##ESIZE(e)],        \
+                              0, fpst);                                 \
+            mergemask(&d[H##ESIZE(e)], r, mask);                        \
+        }                                                               \
+        mve_advance_vpt(env);                                           \
+    }
+
+DO_VFMA(vfmah, 2, float16, false)
+DO_VFMA(vfmas, 4, float32, false)
+DO_VFMA(vfmsh, 2, float16, true)
+DO_VFMA(vfmss, 4, float32, true)
diff --git a/target/arm/translate-mve.c b/target/arm/translate-mve.c
index 6203e3ff916..d61abc6d46f 100644
--- a/target/arm/translate-mve.c
+++ b/target/arm/translate-mve.c
@@ -854,6 +854,8 @@ DO_2OP_FP(VMAXNM, vmaxnm)
 DO_2OP_FP(VMINNM, vminnm)
 DO_2OP_FP(VCADD90_fp, vfcadd90)
 DO_2OP_FP(VCADD270_fp, vfcadd270)
+DO_2OP_FP(VFMA, vfma)
+DO_2OP_FP(VFMS, vfms)
 
 static bool do_2op_scalar(DisasContext *s, arg_2scalar *a,
                           MVEGenTwoOpScalarFn fn)
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 10/51] target/arm: Implement MVE VCMUL and VCMLA
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (8 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 09/51] target/arm: Implement MVE VFMA and VFMS Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 11/51] target/arm: Implement MVE VMAXNMA and VMINNMA Peter Maydell
                   ` (41 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

Implement the MVE VCMUL and VCMLA insns.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/helper-mve.h    | 18 ++++++++
 target/arm/mve.decode      | 35 ++++++++++++----
 target/arm/mve_helper.c    | 86 ++++++++++++++++++++++++++++++++++++++
 target/arm/translate-mve.c |  8 ++++
 4 files changed, 139 insertions(+), 8 deletions(-)

diff --git a/target/arm/helper-mve.h b/target/arm/helper-mve.h
index c230610d25c..73950403bc3 100644
--- a/target/arm/helper-mve.h
+++ b/target/arm/helper-mve.h
@@ -440,6 +440,24 @@ DEF_HELPER_FLAGS_4(mve_vfmas, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
 DEF_HELPER_FLAGS_4(mve_vfmsh, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
 DEF_HELPER_FLAGS_4(mve_vfmss, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
 
+DEF_HELPER_FLAGS_4(mve_vcmul0h, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vcmul0s, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vcmul90h, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vcmul90s, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vcmul180h, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vcmul180s, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vcmul270h, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vcmul270s, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+
+DEF_HELPER_FLAGS_4(mve_vcmla0h, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vcmla0s, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vcmla90h, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vcmla90s, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vcmla180h, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vcmla180s, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vcmla270h, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vcmla270s, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+
 DEF_HELPER_FLAGS_4(mve_vadd_scalarb, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
 DEF_HELPER_FLAGS_4(mve_vadd_scalarh, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
 DEF_HELPER_FLAGS_4(mve_vadd_scalarw, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
diff --git a/target/arm/mve.decode b/target/arm/mve.decode
index 3a2056f6b34..403381eef61 100644
--- a/target/arm/mve.decode
+++ b/target/arm/mve.decode
@@ -286,15 +286,29 @@ VQSHL_U          111 1 1111 0 . .. ... 0 ... 0 0100 . 1 . 1 ... 0 @2op_rev
 VQRSHL_S         111 0 1111 0 . .. ... 0 ... 0 0101 . 1 . 1 ... 0 @2op_rev
 VQRSHL_U         111 1 1111 0 . .. ... 0 ... 0 0101 . 1 . 1 ... 0 @2op_rev
 
-VQDMLADH         1110 1110 0 . .. ... 0 ... 0 1110 . 0 . 0 ... 0 @2op
-VQDMLADHX        1110 1110 0 . .. ... 0 ... 1 1110 . 0 . 0 ... 0 @2op
-VQRDMLADH        1110 1110 0 . .. ... 0 ... 0 1110 . 0 . 0 ... 1 @2op
-VQRDMLADHX       1110 1110 0 . .. ... 0 ... 1 1110 . 0 . 0 ... 1 @2op
+{
+  VCMUL0         111 . 1110 0 . 11 ... 0 ... 0 1110 . 0 . 0 ... 0 @2op_sz28
+  VQDMLADH       1110  1110 0 . .. ... 0 ... 0 1110 . 0 . 0 ... 0 @2op
+  VQDMLSDH       1111  1110 0 . .. ... 0 ... 0 1110 . 0 . 0 ... 0 @2op
+}
 
-VQDMLSDH         1111 1110 0 . .. ... 0 ... 0 1110 . 0 . 0 ... 0 @2op
-VQDMLSDHX        1111 1110 0 . .. ... 0 ... 1 1110 . 0 . 0 ... 0 @2op
-VQRDMLSDH        1111 1110 0 . .. ... 0 ... 0 1110 . 0 . 0 ... 1 @2op
-VQRDMLSDHX       1111 1110 0 . .. ... 0 ... 1 1110 . 0 . 0 ... 1 @2op
+{
+  VCMUL180       111 . 1110 0 . 11 ... 0 ... 1 1110 . 0 . 0 ... 0 @2op_sz28
+  VQDMLADHX      111 0 1110 0 . .. ... 0 ... 1 1110 . 0 . 0 ... 0 @2op
+  VQDMLSDHX      111 1 1110 0 . .. ... 0 ... 1 1110 . 0 . 0 ... 0 @2op
+}
+
+{
+  VCMUL90        111 . 1110 0 . 11 ... 0 ... 0 1110 . 0 . 0 ... 1 @2op_sz28
+  VQRDMLADH      111 0 1110 0 . .. ... 0 ... 0 1110 . 0 . 0 ... 1 @2op
+  VQRDMLSDH      111 1 1110 0 . .. ... 0 ... 0 1110 . 0 . 0 ... 1 @2op
+}
+
+{
+  VCMUL270       111 . 1110 0 . 11 ... 0 ... 1 1110 . 0 . 0 ... 1 @2op_sz28
+  VQRDMLADHX     111 0 1110 0 . .. ... 0 ... 1 1110 . 0 . 0 ... 1 @2op
+  VQRDMLSDHX     111 1 1110 0 . .. ... 0 ... 1 1110 . 0 . 0 ... 1 @2op
+}
 
 VQDMULLB         111 . 1110 0 . 11 ... 0 ... 0 1111 . 0 . 0 ... 1 @2op_sz28
 VQDMULLT         111 . 1110 0 . 11 ... 0 ... 1 1111 . 0 . 0 ... 1 @2op_sz28
@@ -642,3 +656,8 @@ VCADD270_fp       1111 1101 1 . 0 . ... 0 ... 0 1000 . 1 . 0 ... 0 @2op_fp_size_
 
 VFMA              1110 1111 0 . 0 . ... 0 ... 0 1100 . 1 . 1 ... 0 @2op_fp
 VFMS              1110 1111 0 . 1 . ... 0 ... 0 1100 . 1 . 1 ... 0 @2op_fp
+
+VCMLA0            1111 110 00 . 1 . ... 0 ... 0 1000 . 1 . 0 ... 0 @2op_fp_size_rev
+VCMLA90           1111 110 01 . 1 . ... 0 ... 0 1000 . 1 . 0 ... 0 @2op_fp_size_rev
+VCMLA180          1111 110 10 . 1 . ... 0 ... 0 1000 . 1 . 0 ... 0 @2op_fp_size_rev
+VCMLA270          1111 110 11 . 1 . ... 0 ... 0 1000 . 1 . 0 ... 0 @2op_fp_size_rev
diff --git a/target/arm/mve_helper.c b/target/arm/mve_helper.c
index d7f250a4455..e478408fddd 100644
--- a/target/arm/mve_helper.c
+++ b/target/arm/mve_helper.c
@@ -2931,3 +2931,89 @@ DO_VFMA(vfmah, 2, float16, false)
 DO_VFMA(vfmas, 4, float32, false)
 DO_VFMA(vfmsh, 2, float16, true)
 DO_VFMA(vfmss, 4, float32, true)
+
+#define DO_VCMLA(OP, ESIZE, TYPE, ROT, FN)                              \
+    void HELPER(glue(mve_, OP))(CPUARMState *env,                       \
+                                void *vd, void *vn, void *vm)           \
+    {                                                                   \
+        TYPE *d = vd, *n = vn, *m = vm;                                 \
+        TYPE r0, r1, e1, e2, e3, e4;                                    \
+        uint16_t mask = mve_element_mask(env);                          \
+        unsigned e;                                                     \
+        float_status *fpst0, *fpst1;                                    \
+        float_status scratch_fpst;                                      \
+        /* We loop through pairs of elements at a time */               \
+        for (e = 0; e < 16 / ESIZE; e += 2, mask >>= ESIZE * 2) {       \
+            if ((mask & MAKE_64BIT_MASK(0, ESIZE * 2)) == 0) {          \
+                continue;                                               \
+            }                                                           \
+            fpst0 = (ESIZE == 2) ? &env->vfp.standard_fp_status_f16 :   \
+                &env->vfp.standard_fp_status;                           \
+            fpst1 = fpst0;                                              \
+            if (!(mask & 1)) {                                          \
+                scratch_fpst = *fpst0;                                  \
+                fpst0 = &scratch_fpst;                                  \
+            }                                                           \
+            if (!(mask & (1 << ESIZE))) {                               \
+                scratch_fpst = *fpst1;                                  \
+                fpst1 = &scratch_fpst;                                  \
+            }                                                           \
+            switch (ROT) {                                              \
+            case 0:                                                     \
+                e1 = m[H##ESIZE(e)];                                    \
+                e2 = n[H##ESIZE(e)];                                    \
+                e3 = m[H##ESIZE(e + 1)];                                \
+                e4 = n[H##ESIZE(e)];                                    \
+                break;                                                  \
+            case 1:                                                     \
+                e1 = TYPE##_chs(m[H##ESIZE(e + 1)]);                    \
+                e2 = n[H##ESIZE(e + 1)];                                \
+                e3 = m[H##ESIZE(e)];                                    \
+                e4 = n[H##ESIZE(e + 1)];                                \
+                break;                                                  \
+            case 2:                                                     \
+                e1 = TYPE##_chs(m[H##ESIZE(e)]);                        \
+                e2 = n[H##ESIZE(e)];                                    \
+                e3 = TYPE##_chs(m[H##ESIZE(e + 1)]);                    \
+                e4 = n[H##ESIZE(e)];                                    \
+                break;                                                  \
+            case 3:                                                     \
+                e1 = m[H##ESIZE(e + 1)];                                \
+                e2 = n[H##ESIZE(e + 1)];                                \
+                e3 = TYPE##_chs(m[H##ESIZE(e)]);                        \
+                e4 = n[H##ESIZE(e + 1)];                                \
+                break;                                                  \
+            default:                                                    \
+                g_assert_not_reached();                                 \
+            }                                                           \
+            r0 = FN(e2, e1, d[H##ESIZE(e)], fpst0);                     \
+            r1 = FN(e4, e3, d[H##ESIZE(e + 1)], fpst1);                 \
+            mergemask(&d[H##ESIZE(e)], r0, mask);                       \
+            mergemask(&d[H##ESIZE(e + 1)], r1, mask >> ESIZE);          \
+        }                                                               \
+        mve_advance_vpt(env);                                           \
+    }
+
+#define DO_VCMULH(N, M, D, S) float16_mul(N, M, S)
+#define DO_VCMULS(N, M, D, S) float32_mul(N, M, S)
+
+#define DO_VCMLAH(N, M, D, S) float16_muladd(N, M, D, 0, S)
+#define DO_VCMLAS(N, M, D, S) float32_muladd(N, M, D, 0, S)
+
+DO_VCMLA(vcmul0h, 2, float16, 0, DO_VCMULH)
+DO_VCMLA(vcmul0s, 4, float32, 0, DO_VCMULS)
+DO_VCMLA(vcmul90h, 2, float16, 1, DO_VCMULH)
+DO_VCMLA(vcmul90s, 4, float32, 1, DO_VCMULS)
+DO_VCMLA(vcmul180h, 2, float16, 2, DO_VCMULH)
+DO_VCMLA(vcmul180s, 4, float32, 2, DO_VCMULS)
+DO_VCMLA(vcmul270h, 2, float16, 3, DO_VCMULH)
+DO_VCMLA(vcmul270s, 4, float32, 3, DO_VCMULS)
+
+DO_VCMLA(vcmla0h, 2, float16, 0, DO_VCMLAH)
+DO_VCMLA(vcmla0s, 4, float32, 0, DO_VCMLAS)
+DO_VCMLA(vcmla90h, 2, float16, 1, DO_VCMLAH)
+DO_VCMLA(vcmla90s, 4, float32, 1, DO_VCMLAS)
+DO_VCMLA(vcmla180h, 2, float16, 2, DO_VCMLAH)
+DO_VCMLA(vcmla180s, 4, float32, 2, DO_VCMLAS)
+DO_VCMLA(vcmla270h, 2, float16, 3, DO_VCMLAH)
+DO_VCMLA(vcmla270s, 4, float32, 3, DO_VCMLAS)
diff --git a/target/arm/translate-mve.c b/target/arm/translate-mve.c
index d61abc6d46f..d62ed1fc295 100644
--- a/target/arm/translate-mve.c
+++ b/target/arm/translate-mve.c
@@ -856,6 +856,14 @@ DO_2OP_FP(VCADD90_fp, vfcadd90)
 DO_2OP_FP(VCADD270_fp, vfcadd270)
 DO_2OP_FP(VFMA, vfma)
 DO_2OP_FP(VFMS, vfms)
+DO_2OP_FP(VCMUL0, vcmul0)
+DO_2OP_FP(VCMUL90, vcmul90)
+DO_2OP_FP(VCMUL180, vcmul180)
+DO_2OP_FP(VCMUL270, vcmul270)
+DO_2OP_FP(VCMLA0, vcmla0)
+DO_2OP_FP(VCMLA90, vcmla90)
+DO_2OP_FP(VCMLA180, vcmla180)
+DO_2OP_FP(VCMLA270, vcmla270)
 
 static bool do_2op_scalar(DisasContext *s, arg_2scalar *a,
                           MVEGenTwoOpScalarFn fn)
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 11/51] target/arm: Implement MVE VMAXNMA and VMINNMA
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (9 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 10/51] target/arm: Implement MVE VCMUL and VCMLA Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 12/51] target/arm: Implement MVE scalar fp insns Peter Maydell
                   ` (40 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

Implement the MVE VMAXNMA and VMINNMA insns; these are 2-operand, but
the destination register must be the same as one of the source
registers.

We defer the decode of the size in bit 28 to the individual insn
patterns rather than doing it in the format, because otherwise we
would have a single insn pattern that overlapped with two groups (eg
VMAXNMA with the VMULH_S and VMULH_U groups). Having two insn
patterns per insn seems clearer than a complex multilevel nesting
of overlapping and non-overlapping groups.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/helper-mve.h    |  6 ++++++
 target/arm/mve.decode      | 11 +++++++++++
 target/arm/mve_helper.c    | 23 +++++++++++++++++++++++
 target/arm/translate-mve.c |  2 ++
 4 files changed, 42 insertions(+)

diff --git a/target/arm/helper-mve.h b/target/arm/helper-mve.h
index 73950403bc3..57ab3f7b59f 100644
--- a/target/arm/helper-mve.h
+++ b/target/arm/helper-mve.h
@@ -428,6 +428,12 @@ DEF_HELPER_FLAGS_4(mve_vmaxnms, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
 DEF_HELPER_FLAGS_4(mve_vminnmh, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
 DEF_HELPER_FLAGS_4(mve_vminnms, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
 
+DEF_HELPER_FLAGS_4(mve_vmaxnmah, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vmaxnmas, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+
+DEF_HELPER_FLAGS_4(mve_vminnmah, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vminnmas, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+
 DEF_HELPER_FLAGS_4(mve_vfcadd90h, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
 DEF_HELPER_FLAGS_4(mve_vfcadd90s, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
 
diff --git a/target/arm/mve.decode b/target/arm/mve.decode
index 403381eef61..b0622e1f62c 100644
--- a/target/arm/mve.decode
+++ b/target/arm/mve.decode
@@ -130,6 +130,11 @@
 @2op_fp_size_rev .... .... .... .... .... .... .... .... &2op \
                  qd=%qd qn=%qn qm=%qm size=%2op_fp_size_rev
 
+# 2-operand, but Qd and Qn share a field. Size is in bit 28, but we
+# don't decode it in this format
+@vmaxnma  .... .... .... .... .... .... .... .... &2op \
+          qd=%qd qn=%qd qm=%qm
+
 # Vector loads and stores
 
 # Widening loads and narrowing stores:
@@ -199,6 +204,8 @@ VMUL             1110 1111 0 . .. ... 0 ... 0 1001 . 1 . 1 ... 0 @2op
 # The VSHLL T2 encoding is not a @2op pattern, but is here because it
 # overlaps what would be size=0b11 VMULH/VRMULH
 {
+  VMAXNMA        111 0 1110 0 . 11 1111 ... 0 1110 1 0 . 0 ... 1 @vmaxnma size=2
+
   VSHLL_BS       111 0 1110 0 . 11 .. 01 ... 0 1110 0 0 . 0 ... 1 @2_shll_esize_b
   VSHLL_BS       111 0 1110 0 . 11 .. 01 ... 0 1110 0 0 . 0 ... 1 @2_shll_esize_h
 
@@ -211,6 +218,8 @@ VMUL             1110 1111 0 . .. ... 0 ... 0 1001 . 1 . 1 ... 0 @2op
 }
 
 {
+  VMAXNMA        111 1 1110 0 . 11  1111 ... 0 1110 1 0 . 0 ... 1 @vmaxnma size=1
+
   VSHLL_BU       111 1 1110 0 . 11 .. 01 ... 0 1110 0 0 . 0 ... 1 @2_shll_esize_b
   VSHLL_BU       111 1 1110 0 . 11 .. 01 ... 0 1110 0 0 . 0 ... 1 @2_shll_esize_h
 
@@ -221,6 +230,7 @@ VMUL             1110 1111 0 . .. ... 0 ... 0 1001 . 1 . 1 ... 0 @2op
 }
 
 {
+  VMINNMA        111 0 1110 0 . 11  1111 ... 1 1110 1 0 . 0 ... 1 @vmaxnma size=2
   VSHLL_TS       111 0 1110 0 . 11 .. 01 ... 1 1110 0 0 . 0 ... 1 @2_shll_esize_b
   VSHLL_TS       111 0 1110 0 . 11 .. 01 ... 1 1110 0 0 . 0 ... 1 @2_shll_esize_h
 
@@ -233,6 +243,7 @@ VMUL             1110 1111 0 . .. ... 0 ... 0 1001 . 1 . 1 ... 0 @2op
 }
 
 {
+  VMINNMA        111 1 1110 0 . 11  1111 ... 1 1110 1 0 . 0 ... 1 @vmaxnma size=1
   VSHLL_TU       111 1 1110 0 . 11 .. 01 ... 1 1110 0 0 . 0 ... 1 @2_shll_esize_b
   VSHLL_TU       111 1 1110 0 . 11 .. 01 ... 1 1110 0 0 . 0 ... 1 @2_shll_esize_h
 
diff --git a/target/arm/mve_helper.c b/target/arm/mve_helper.c
index e478408fddd..a6ad894414a 100644
--- a/target/arm/mve_helper.c
+++ b/target/arm/mve_helper.c
@@ -2855,6 +2855,29 @@ DO_2OP_FP_ALL(vfabd, abd)
 DO_2OP_FP_ALL(vmaxnm, maxnum)
 DO_2OP_FP_ALL(vminnm, minnum)
 
+static inline float16 float16_maxnuma(float16 a, float16 b, float_status *s)
+{
+    return float16_maxnum(float16_abs(a), float16_abs(b), s);
+}
+
+static inline float32 float32_maxnuma(float32 a, float32 b, float_status *s)
+{
+    return float32_maxnum(float32_abs(a), float32_abs(b), s);
+}
+
+static inline float16 float16_minnuma(float16 a, float16 b, float_status *s)
+{
+    return float16_minnum(float16_abs(a), float16_abs(b), s);
+}
+
+static inline float32 float32_minnuma(float32 a, float32 b, float_status *s)
+{
+    return float32_minnum(float32_abs(a), float32_abs(b), s);
+}
+
+DO_2OP_FP_ALL(vmaxnma, maxnuma)
+DO_2OP_FP_ALL(vminnma, minnuma)
+
 #define DO_VCADD_FP(OP, ESIZE, TYPE, FN0, FN1)                          \
     void HELPER(glue(mve_, OP))(CPUARMState *env,                       \
                                 void *vd, void *vn, void *vm)           \
diff --git a/target/arm/translate-mve.c b/target/arm/translate-mve.c
index d62ed1fc295..4d702da808d 100644
--- a/target/arm/translate-mve.c
+++ b/target/arm/translate-mve.c
@@ -864,6 +864,8 @@ DO_2OP_FP(VCMLA0, vcmla0)
 DO_2OP_FP(VCMLA90, vcmla90)
 DO_2OP_FP(VCMLA180, vcmla180)
 DO_2OP_FP(VCMLA270, vcmla270)
+DO_2OP_FP(VMAXNMA, vmaxnma)
+DO_2OP_FP(VMINNMA, vminnma)
 
 static bool do_2op_scalar(DisasContext *s, arg_2scalar *a,
                           MVEGenTwoOpScalarFn fn)
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 12/51] target/arm: Implement MVE scalar fp insns
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (10 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 11/51] target/arm: Implement MVE VMAXNMA and VMINNMA Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 13/51] target/arm: Implement MVE fp-with-scalar VFMA, VFMAS Peter Maydell
                   ` (39 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

Implement the MVE scalar floating point insns VADD, VSUB and VMUL.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/arm/helper-mve.h    |  9 +++++++++
 target/arm/mve.decode      | 27 +++++++++++++++++++++------
 target/arm/mve_helper.c    | 35 +++++++++++++++++++++++++++++++++++
 target/arm/translate-mve.c | 20 ++++++++++++++++++++
 4 files changed, 85 insertions(+), 6 deletions(-)

diff --git a/target/arm/helper-mve.h b/target/arm/helper-mve.h
index 57ab3f7b59f..091ec4b4270 100644
--- a/target/arm/helper-mve.h
+++ b/target/arm/helper-mve.h
@@ -800,3 +800,12 @@ DEF_HELPER_FLAGS_3(mve_vcmpgt_scalarw, TCG_CALL_NO_WG, void, env, ptr, i32)
 DEF_HELPER_FLAGS_3(mve_vcmple_scalarb, TCG_CALL_NO_WG, void, env, ptr, i32)
 DEF_HELPER_FLAGS_3(mve_vcmple_scalarh, TCG_CALL_NO_WG, void, env, ptr, i32)
 DEF_HELPER_FLAGS_3(mve_vcmple_scalarw, TCG_CALL_NO_WG, void, env, ptr, i32)
+
+DEF_HELPER_FLAGS_4(mve_vfadd_scalarh, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(mve_vfadd_scalars, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
+
+DEF_HELPER_FLAGS_4(mve_vfsub_scalarh, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(mve_vfsub_scalars, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
+
+DEF_HELPER_FLAGS_4(mve_vfmul_scalarh, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(mve_vfmul_scalars, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
diff --git a/target/arm/mve.decode b/target/arm/mve.decode
index b0622e1f62c..5ba8b6deeaa 100644
--- a/target/arm/mve.decode
+++ b/target/arm/mve.decode
@@ -31,6 +31,8 @@
 %2op_fp_size 20:1 !function=neon_3same_fp_size
 # VCADD is an exception, where bit 20 is 0 for 16 bit and 1 for 32 bit
 %2op_fp_size_rev 20:1 !function=plus_1
+# FP scalars have size in bit 28, 1 for 16 bit, 0 for 32 bit
+%2op_fp_scalar_size 28:1 !function=neon_3same_fp_size
 
 # 1imm format immediate
 %imm_28_16_0 28:1 16:3 0:4
@@ -135,6 +137,9 @@
 @vmaxnma  .... .... .... .... .... .... .... .... &2op \
           qd=%qd qn=%qd qm=%qm
 
+@2op_fp_scalar .... .... .... .... .... .... .... rm:4 &2scalar \
+               qd=%qd qn=%qn size=%2op_fp_scalar_size
+
 # Vector loads and stores
 
 # Widening loads and narrowing stores:
@@ -471,10 +476,17 @@ VSUB_scalar      1110 1110 0 . .. ... 1 ... 1 1111 . 100 .... @2scalar
   VBRSR           1111 1110 0 . .. ... 1 ... 1 1110 . 110 .... @2scalar
 }
 
-VHADD_S_scalar   1110 1110 0 . .. ... 0 ... 0 1111 . 100 .... @2scalar
-VHADD_U_scalar   1111 1110 0 . .. ... 0 ... 0 1111 . 100 .... @2scalar
-VHSUB_S_scalar   1110 1110 0 . .. ... 0 ... 1 1111 . 100 .... @2scalar
-VHSUB_U_scalar   1111 1110 0 . .. ... 0 ... 1 1111 . 100 .... @2scalar
+{
+  VADD_fp_scalar  111 . 1110 0 . 11 ... 0 ... 0 1111 . 100 .... @2op_fp_scalar
+  VHADD_S_scalar  1110  1110 0 . .. ... 0 ... 0 1111 . 100 .... @2scalar
+  VHADD_U_scalar  1111  1110 0 . .. ... 0 ... 0 1111 . 100 .... @2scalar
+}
+
+{
+  VSUB_fp_scalar  111 . 1110 0 . 11 ... 0 ... 1 1111 . 100 .... @2op_fp_scalar
+  VHSUB_S_scalar  1110  1110 0 . .. ... 0 ... 1 1111 . 100 .... @2scalar
+  VHSUB_U_scalar  1111  1110 0 . .. ... 0 ... 1 1111 . 100 .... @2scalar
+}
 
 {
   VQADD_S_scalar  1110  1110 0 . .. ... 0 ... 0 1111 . 110 .... @2scalar
@@ -490,8 +502,11 @@ VHSUB_U_scalar   1111 1110 0 . .. ... 0 ... 1 1111 . 100 .... @2scalar
                   size=%size_28
 }
 
-VQDMULH_scalar   1110 1110 0 . .. ... 1 ... 0 1110 . 110 .... @2scalar
-VQRDMULH_scalar  1111 1110 0 . .. ... 1 ... 0 1110 . 110 .... @2scalar
+{
+  VMUL_fp_scalar  111 . 1110 0 . 11 ... 1 ... 0 1110 . 110 .... @2op_fp_scalar
+  VQDMULH_scalar  1110  1110 0 . .. ... 1 ... 0 1110 . 110 .... @2scalar
+  VQRDMULH_scalar 1111  1110 0 . .. ... 1 ... 0 1110 . 110 .... @2scalar
+}
 
 # The U bit (28) is don't-care because it does not affect the result
 VMLA             111- 1110 0 . .. ... 1 ... 0 1110 . 100 .... @2scalar
diff --git a/target/arm/mve_helper.c b/target/arm/mve_helper.c
index a6ad894414a..b49975fdc01 100644
--- a/target/arm/mve_helper.c
+++ b/target/arm/mve_helper.c
@@ -3040,3 +3040,38 @@ DO_VCMLA(vcmla180h, 2, float16, 2, DO_VCMLAH)
 DO_VCMLA(vcmla180s, 4, float32, 2, DO_VCMLAS)
 DO_VCMLA(vcmla270h, 2, float16, 3, DO_VCMLAH)
 DO_VCMLA(vcmla270s, 4, float32, 3, DO_VCMLAS)
+
+#define DO_2OP_FP_SCALAR(OP, ESIZE, TYPE, FN)                           \
+    void HELPER(glue(mve_, OP))(CPUARMState *env,                       \
+                                void *vd, void *vn, uint32_t rm)        \
+    {                                                                   \
+        TYPE *d = vd, *n = vn;                                          \
+        TYPE r, m = rm;                                                 \
+        uint16_t mask = mve_element_mask(env);                          \
+        unsigned e;                                                     \
+        float_status *fpst;                                             \
+        float_status scratch_fpst;                                      \
+        for (e = 0; e < 16 / ESIZE; e++, mask >>= ESIZE) {              \
+            if ((mask & MAKE_64BIT_MASK(0, ESIZE)) == 0) {              \
+                continue;                                               \
+            }                                                           \
+            fpst = (ESIZE == 2) ? &env->vfp.standard_fp_status_f16 :    \
+                &env->vfp.standard_fp_status;                           \
+            if (!(mask & 1)) {                                          \
+                /* We need the result but without updating flags */     \
+                scratch_fpst = *fpst;                                   \
+                fpst = &scratch_fpst;                                   \
+            }                                                           \
+            r = FN(n[H##ESIZE(e)], m, fpst);                            \
+            mergemask(&d[H##ESIZE(e)], r, mask);                        \
+        }                                                               \
+        mve_advance_vpt(env);                                           \
+    }
+
+#define DO_2OP_FP_SCALAR_ALL(OP, FN)                    \
+    DO_2OP_FP_SCALAR(OP##h, 2, float16, float16_##FN)   \
+    DO_2OP_FP_SCALAR(OP##s, 4, float32, float32_##FN)
+
+DO_2OP_FP_SCALAR_ALL(vfadd_scalar, add)
+DO_2OP_FP_SCALAR_ALL(vfsub_scalar, sub)
+DO_2OP_FP_SCALAR_ALL(vfmul_scalar, mul)
diff --git a/target/arm/translate-mve.c b/target/arm/translate-mve.c
index 4d702da808d..bc4b3f840a0 100644
--- a/target/arm/translate-mve.c
+++ b/target/arm/translate-mve.c
@@ -960,6 +960,26 @@ static bool trans_VQDMULLT_scalar(DisasContext *s, arg_2scalar *a)
     return do_2op_scalar(s, a, fns[a->size]);
 }
 
+
+#define DO_2OP_FP_SCALAR(INSN, FN)                              \
+    static bool trans_##INSN(DisasContext *s, arg_2scalar *a)   \
+    {                                                           \
+        static MVEGenTwoOpScalarFn * const fns[] = {            \
+            NULL,                                               \
+            gen_helper_mve_##FN##h,                             \
+            gen_helper_mve_##FN##s,                             \
+            NULL,                                               \
+        };                                                      \
+        if (!dc_isar_feature(aa32_mve_fp, s)) {                 \
+            return false;                                       \
+        }                                                       \
+        return do_2op_scalar(s, a, fns[a->size]);               \
+    }
+
+DO_2OP_FP_SCALAR(VADD_fp_scalar, vfadd_scalar)
+DO_2OP_FP_SCALAR(VSUB_fp_scalar, vfsub_scalar)
+DO_2OP_FP_SCALAR(VMUL_fp_scalar, vfmul_scalar)
+
 static bool do_long_dual_acc(DisasContext *s, arg_vmlaldav *a,
                              MVEGenLongDualAccOpFn *fn)
 {
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 13/51] target/arm: Implement MVE fp-with-scalar VFMA, VFMAS
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (11 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 12/51] target/arm: Implement MVE scalar fp insns Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 14/51] softfloat: Remove assertion preventing silencing of NaN in default-NaN mode Peter Maydell
                   ` (38 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

Implement the MVE fp-with-scalar VFMA and VFMAS insns.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/arm/helper-mve.h    |  6 ++++++
 target/arm/mve.decode      | 14 +++++++++++---
 target/arm/mve_helper.c    | 37 +++++++++++++++++++++++++++++++++++++
 target/arm/translate-mve.c |  2 ++
 4 files changed, 56 insertions(+), 3 deletions(-)

diff --git a/target/arm/helper-mve.h b/target/arm/helper-mve.h
index 091ec4b4270..cb7b6423239 100644
--- a/target/arm/helper-mve.h
+++ b/target/arm/helper-mve.h
@@ -809,3 +809,9 @@ DEF_HELPER_FLAGS_4(mve_vfsub_scalars, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
 
 DEF_HELPER_FLAGS_4(mve_vfmul_scalarh, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
 DEF_HELPER_FLAGS_4(mve_vfmul_scalars, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
+
+DEF_HELPER_FLAGS_4(mve_vfma_scalarh, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(mve_vfma_scalars, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
+
+DEF_HELPER_FLAGS_4(mve_vfmas_scalarh, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(mve_vfmas_scalars, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
diff --git a/target/arm/mve.decode b/target/arm/mve.decode
index 5ba8b6deeaa..d2bd6815bc3 100644
--- a/target/arm/mve.decode
+++ b/target/arm/mve.decode
@@ -508,9 +508,17 @@ VSUB_scalar      1110 1110 0 . .. ... 1 ... 1 1111 . 100 .... @2scalar
   VQRDMULH_scalar 1111  1110 0 . .. ... 1 ... 0 1110 . 110 .... @2scalar
 }
 
-# The U bit (28) is don't-care because it does not affect the result
-VMLA             111- 1110 0 . .. ... 1 ... 0 1110 . 100 .... @2scalar
-VMLAS            111- 1110 0 . .. ... 1 ... 1 1110 . 100 .... @2scalar
+{
+  VFMA_scalar     111 . 1110 0 . 11 ... 1 ... 0 1110 . 100 .... @2op_fp_scalar
+  # The U bit (28) is don't-care because it does not affect the result
+  VMLA            111 - 1110 0 . .. ... 1 ... 0 1110 . 100 .... @2scalar
+}
+
+{
+  VFMAS_scalar    111 . 1110 0 . 11 ... 1 ... 1 1110 . 100 .... @2op_fp_scalar
+  # The U bit (28) is don't-care because it does not affect the result
+  VMLAS           111 - 1110 0 . .. ... 1 ... 1 1110 . 100 .... @2scalar
+}
 
 VQRDMLAH         1110 1110 0 . .. ... 0 ... 0 1110 . 100 .... @2scalar
 VQRDMLASH        1110 1110 0 . .. ... 0 ... 1 1110 . 100 .... @2scalar
diff --git a/target/arm/mve_helper.c b/target/arm/mve_helper.c
index b49975fdc01..36f0910b856 100644
--- a/target/arm/mve_helper.c
+++ b/target/arm/mve_helper.c
@@ -3075,3 +3075,40 @@ DO_VCMLA(vcmla270s, 4, float32, 3, DO_VCMLAS)
 DO_2OP_FP_SCALAR_ALL(vfadd_scalar, add)
 DO_2OP_FP_SCALAR_ALL(vfsub_scalar, sub)
 DO_2OP_FP_SCALAR_ALL(vfmul_scalar, mul)
+
+#define DO_2OP_FP_ACC_SCALAR(OP, ESIZE, TYPE, FN)                       \
+    void HELPER(glue(mve_, OP))(CPUARMState *env,                       \
+                                void *vd, void *vn, uint32_t rm)        \
+    {                                                                   \
+        TYPE *d = vd, *n = vn;                                          \
+        TYPE r, m = rm;                                                 \
+        uint16_t mask = mve_element_mask(env);                          \
+        unsigned e;                                                     \
+        float_status *fpst;                                             \
+        float_status scratch_fpst;                                      \
+        for (e = 0; e < 16 / ESIZE; e++, mask >>= ESIZE) {              \
+            if ((mask & MAKE_64BIT_MASK(0, ESIZE)) == 0) {              \
+                continue;                                               \
+            }                                                           \
+            fpst = (ESIZE == 2) ? &env->vfp.standard_fp_status_f16 :    \
+                &env->vfp.standard_fp_status;                           \
+            if (!(mask & 1)) {                                          \
+                /* We need the result but without updating flags */     \
+                scratch_fpst = *fpst;                                   \
+                fpst = &scratch_fpst;                                   \
+            }                                                           \
+            r = FN(n[H##ESIZE(e)], m, d[H##ESIZE(e)], 0, fpst);         \
+            mergemask(&d[H##ESIZE(e)], r, mask);                        \
+        }                                                               \
+        mve_advance_vpt(env);                                           \
+    }
+
+/* VFMAS is vector * vector + scalar, so swap op2 and op3 */
+#define DO_VFMAS_SCALARH(N, M, D, F, S) float16_muladd(N, D, M, F, S)
+#define DO_VFMAS_SCALARS(N, M, D, F, S) float32_muladd(N, D, M, F, S)
+
+/* VFMA is vector * scalar + vector */
+DO_2OP_FP_ACC_SCALAR(vfma_scalarh, 2, float16, float16_muladd)
+DO_2OP_FP_ACC_SCALAR(vfma_scalars, 4, float32, float32_muladd)
+DO_2OP_FP_ACC_SCALAR(vfmas_scalarh, 2, float16, DO_VFMAS_SCALARH)
+DO_2OP_FP_ACC_SCALAR(vfmas_scalars, 4, float32, DO_VFMAS_SCALARS)
diff --git a/target/arm/translate-mve.c b/target/arm/translate-mve.c
index bc4b3f840a0..3627ba227f2 100644
--- a/target/arm/translate-mve.c
+++ b/target/arm/translate-mve.c
@@ -979,6 +979,8 @@ static bool trans_VQDMULLT_scalar(DisasContext *s, arg_2scalar *a)
 DO_2OP_FP_SCALAR(VADD_fp_scalar, vfadd_scalar)
 DO_2OP_FP_SCALAR(VSUB_fp_scalar, vfsub_scalar)
 DO_2OP_FP_SCALAR(VMUL_fp_scalar, vfmul_scalar)
+DO_2OP_FP_SCALAR(VFMA_scalar, vfma_scalar)
+DO_2OP_FP_SCALAR(VFMAS_scalar, vfmas_scalar)
 
 static bool do_long_dual_acc(DisasContext *s, arg_vmlaldav *a,
                              MVEGenLongDualAccOpFn *fn)
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 14/51] softfloat: Remove assertion preventing silencing of NaN in default-NaN mode
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (12 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 13/51] target/arm: Implement MVE fp-with-scalar VFMA, VFMAS Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 15/51] target/arm: Implement MVE FP max/min across vector Peter Maydell
                   ` (37 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

In commit a777d6033447a we added an assertion to parts_silence_nan() that
prohibits calling float*_silence_nan() when in default-NaN mode.
This ties together a property of the output ("do we generate a default
NaN when the result is a NaN?") with an operation on an input ("silence
this input NaN").

It's true that most of the time when in default-NaN mode you won't
need to silence an input NaN, because you can just produce the
default NaN as the result instead.  But some functions like
float*_maxnum() are defined to be able to work with quiet NaNs, so
silencing an input SNaN is still reasonable.  In particular, the
upcoming implementation of MVE VMAXNMV would fall over this assertion
if we didn't delete it.

Delete the assertion.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 fpu/softfloat-specialize.c.inc | 1 -
 1 file changed, 1 deletion(-)

diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc
index 12467bb9bba..f2ad0f335e6 100644
--- a/fpu/softfloat-specialize.c.inc
+++ b/fpu/softfloat-specialize.c.inc
@@ -198,7 +198,6 @@ static void parts128_default_nan(FloatParts128 *p, float_status *status)
 static uint64_t parts_silence_nan_frac(uint64_t frac, float_status *status)
 {
     g_assert(!no_signaling_nans(status));
-    g_assert(!status->default_nan_mode);
 
     /* The only snan_bit_is_one target without default_nan_mode is HPPA. */
     if (snan_bit_is_one(status)) {
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 15/51] target/arm: Implement MVE FP max/min across vector
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (13 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 14/51] softfloat: Remove assertion preventing silencing of NaN in default-NaN mode Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 16/51] target/arm: Implement MVE fp vector comparisons Peter Maydell
                   ` (36 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

Implement the MVE VMAXNMV, VMINNMV, VMAXNMAV, VMINNMAV insns.  These
calculate the maximum or minimum of floating point elements across a
vector, starting with a value in a general purpose register and
returning the result there.

The pseudocode silences a possible SNaN in the accumulating result
on every iteration (by calling FPConvertNaN), but we do it only
on the input ra, because if none of the inputs to float*_maxnum
or float*_minnum are SNaNs then the result can't be an SNaN.

Note that we can't use the float*_maxnuma() etc functions we defined
earlier for VMAXNMA and VMINNMA, because we mustn't take the absolute
value of the starting general-purpose register value, which could be
negative.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/arm/helper-mve.h    | 12 +++++++++++
 target/arm/mve.decode      | 32 +++++++++++++++++++++------
 target/arm/mve_helper.c    | 44 ++++++++++++++++++++++++++++++++++++++
 target/arm/translate-mve.c | 20 +++++++++++++++++
 4 files changed, 102 insertions(+), 6 deletions(-)

diff --git a/target/arm/helper-mve.h b/target/arm/helper-mve.h
index cb7b6423239..47fd18dddbf 100644
--- a/target/arm/helper-mve.h
+++ b/target/arm/helper-mve.h
@@ -614,6 +614,18 @@ DEF_HELPER_FLAGS_3(mve_vminavb, TCG_CALL_NO_WG, i32, env, ptr, i32)
 DEF_HELPER_FLAGS_3(mve_vminavh, TCG_CALL_NO_WG, i32, env, ptr, i32)
 DEF_HELPER_FLAGS_3(mve_vminavw, TCG_CALL_NO_WG, i32, env, ptr, i32)
 
+DEF_HELPER_FLAGS_3(mve_vmaxnmvh, TCG_CALL_NO_WG, i32, env, ptr, i32)
+DEF_HELPER_FLAGS_3(mve_vmaxnmvs, TCG_CALL_NO_WG, i32, env, ptr, i32)
+
+DEF_HELPER_FLAGS_3(mve_vminnmvh, TCG_CALL_NO_WG, i32, env, ptr, i32)
+DEF_HELPER_FLAGS_3(mve_vminnmvs, TCG_CALL_NO_WG, i32, env, ptr, i32)
+
+DEF_HELPER_FLAGS_3(mve_vmaxnmavh, TCG_CALL_NO_WG, i32, env, ptr, i32)
+DEF_HELPER_FLAGS_3(mve_vmaxnmavs, TCG_CALL_NO_WG, i32, env, ptr, i32)
+
+DEF_HELPER_FLAGS_3(mve_vminnmavh, TCG_CALL_NO_WG, i32, env, ptr, i32)
+DEF_HELPER_FLAGS_3(mve_vminnmavs, TCG_CALL_NO_WG, i32, env, ptr, i32)
+
 DEF_HELPER_FLAGS_3(mve_vaddlv_s, TCG_CALL_NO_WG, i64, env, ptr, i64)
 DEF_HELPER_FLAGS_3(mve_vaddlv_u, TCG_CALL_NO_WG, i64, env, ptr, i64)
 
diff --git a/target/arm/mve.decode b/target/arm/mve.decode
index d2bd6815bc3..a46372f8c77 100644
--- a/target/arm/mve.decode
+++ b/target/arm/mve.decode
@@ -137,6 +137,10 @@
 @vmaxnma  .... .... .... .... .... .... .... .... &2op \
           qd=%qd qn=%qd qm=%qm
 
+# Here also we don't decode the bit 28 size in the format to avoid
+# awkward nested overlap groups
+@vmaxnmv          .... .... .... .... rda:4 .... .... .... &vmaxv qm=%qm
+
 @2op_fp_scalar .... .... .... .... .... .... .... rm:4 &2scalar \
                qd=%qd qn=%qn size=%2op_fp_scalar_size
 
@@ -440,17 +444,33 @@ VMLADAV_S        1110 1110 1111  ... 0 ... . 1111 . 0 . 0 ... 1 @vmladav_nosz
 VMLADAV_U        1111 1110 1111  ... 0 ... . 1111 . 0 . 0 ... 1 @vmladav_nosz
 
 {
-  VMAXV_S        1110 1110 1110  .. 10 ....  1111 0 0 . 0 ... 0 @vmaxv
-  VMINV_S        1110 1110 1110  .. 10 ....  1111 1 0 . 0 ... 0 @vmaxv
-  VMAXAV         1110 1110 1110  .. 00 ....  1111 0 0 . 0 ... 0 @vmaxv
-  VMINAV         1110 1110 1110  .. 00 ....  1111 1 0 . 0 ... 0 @vmaxv
+  [
+    VMAXNMAV     1110 1110 1110  11 00 ....  1111 0 0 . 0 ... 0 @vmaxnmv size=2
+    VMINNMAV     1110 1110 1110  11 00 ....  1111 1 0 . 0 ... 0 @vmaxnmv size=2
+    VMAXNMV      1110 1110 1110  11 10 ....  1111 0 0 . 0 ... 0 @vmaxnmv size=2
+    VMINNMV      1110 1110 1110  11 10 ....  1111 1 0 . 0 ... 0 @vmaxnmv size=2
+  ]
+  [
+    VMAXV_S      1110 1110 1110  .. 10 ....  1111 0 0 . 0 ... 0 @vmaxv
+    VMINV_S      1110 1110 1110  .. 10 ....  1111 1 0 . 0 ... 0 @vmaxv
+    VMAXAV       1110 1110 1110  .. 00 ....  1111 0 0 . 0 ... 0 @vmaxv
+    VMINAV       1110 1110 1110  .. 00 ....  1111 1 0 . 0 ... 0 @vmaxv
+  ]
   VMLADAV_S      1110 1110 1111  ... 0 ... . 1111 . 0 . 0 ... 0 @vmladav_nosz
   VRMLALDAVH_S   1110 1110 1 ... ... 0 ... . 1111 . 0 . 0 ... 0 @vmlaldav_nosz
 }
 
 {
-  VMAXV_U        1111 1110 1110  .. 10 ....  1111 0 0 . 0 ... 0 @vmaxv
-  VMINV_U        1111 1110 1110  .. 10 ....  1111 1 0 . 0 ... 0 @vmaxv
+  [
+    VMAXNMAV     1111 1110 1110  11 00 ....  1111 0 0 . 0 ... 0 @vmaxnmv size=1
+    VMINNMAV     1111 1110 1110  11 00 ....  1111 1 0 . 0 ... 0 @vmaxnmv size=1
+    VMAXNMV      1111 1110 1110  11 10 ....  1111 0 0 . 0 ... 0 @vmaxnmv size=1
+    VMINNMV      1111 1110 1110  11 10 ....  1111 1 0 . 0 ... 0 @vmaxnmv size=1
+  ]
+  [
+    VMAXV_U      1111 1110 1110  .. 10 ....  1111 0 0 . 0 ... 0 @vmaxv
+    VMINV_U      1111 1110 1110  .. 10 ....  1111 1 0 . 0 ... 0 @vmaxv
+  ]
   VMLADAV_U      1111 1110 1111  ... 0 ... . 1111 . 0 . 0 ... 0 @vmladav_nosz
   VRMLALDAVH_U   1111 1110 1 ... ... 0 ... . 1111 . 0 . 0 ... 0 @vmlaldav_nosz
 }
diff --git a/target/arm/mve_helper.c b/target/arm/mve_helper.c
index 36f0910b856..52e5a8f2a8b 100644
--- a/target/arm/mve_helper.c
+++ b/target/arm/mve_helper.c
@@ -3112,3 +3112,47 @@ DO_2OP_FP_ACC_SCALAR(vfma_scalarh, 2, float16, float16_muladd)
 DO_2OP_FP_ACC_SCALAR(vfma_scalars, 4, float32, float32_muladd)
 DO_2OP_FP_ACC_SCALAR(vfmas_scalarh, 2, float16, DO_VFMAS_SCALARH)
 DO_2OP_FP_ACC_SCALAR(vfmas_scalars, 4, float32, DO_VFMAS_SCALARS)
+
+/* Floating point max/min across vector. */
+#define DO_FP_VMAXMINV(OP, ESIZE, TYPE, ABS, FN)                \
+    uint32_t HELPER(glue(mve_, OP))(CPUARMState *env, void *vm, \
+                                    uint32_t ra_in)             \
+    {                                                           \
+        uint16_t mask = mve_element_mask(env);                  \
+        unsigned e;                                             \
+        TYPE *m = vm;                                           \
+        TYPE ra = (TYPE)ra_in;                                  \
+        float_status *fpst = (ESIZE == 2) ?                     \
+            &env->vfp.standard_fp_status_f16 :                  \
+            &env->vfp.standard_fp_status;                       \
+        for (e = 0; e < 16 / ESIZE; e++, mask >>= ESIZE) {      \
+            if (mask & 1) {                                     \
+                TYPE v = m[H##ESIZE(e)];                        \
+                if (TYPE##_is_signaling_nan(ra, fpst)) {        \
+                    ra = TYPE##_silence_nan(ra, fpst);          \
+                    float_raise(float_flag_invalid, fpst);      \
+                }                                               \
+                if (TYPE##_is_signaling_nan(v, fpst)) {         \
+                    v = TYPE##_silence_nan(v, fpst);            \
+                    float_raise(float_flag_invalid, fpst);      \
+                }                                               \
+                if (ABS) {                                      \
+                    v = TYPE##_abs(v);                          \
+                }                                               \
+                ra = FN(ra, v, fpst);                           \
+            }                                                   \
+        }                                                       \
+        mve_advance_vpt(env);                                   \
+        return ra;                                              \
+    }                                                           \
+
+#define NOP(X) (X)
+
+DO_FP_VMAXMINV(vmaxnmvh, 2, float16, false, float16_maxnum)
+DO_FP_VMAXMINV(vmaxnmvs, 4, float32, false, float32_maxnum)
+DO_FP_VMAXMINV(vminnmvh, 2, float16, false, float16_minnum)
+DO_FP_VMAXMINV(vminnmvs, 4, float32, false, float32_minnum)
+DO_FP_VMAXMINV(vmaxnmavh, 2, float16, true, float16_maxnum)
+DO_FP_VMAXMINV(vmaxnmavs, 4, float32, true, float32_maxnum)
+DO_FP_VMAXMINV(vminnmavh, 2, float16, true, float16_minnum)
+DO_FP_VMAXMINV(vminnmavs, 4, float32, true, float32_minnum)
diff --git a/target/arm/translate-mve.c b/target/arm/translate-mve.c
index 3627ba227f2..4e2aa2cae2d 100644
--- a/target/arm/translate-mve.c
+++ b/target/arm/translate-mve.c
@@ -1806,6 +1806,26 @@ DO_VMAXV(VMINV_S, vminvs)
 DO_VMAXV(VMINV_U, vminvu)
 DO_VMAXV(VMINAV, vminav)
 
+#define DO_VMAXV_FP(INSN, FN)                                   \
+    static bool trans_##INSN(DisasContext *s, arg_vmaxv *a)     \
+    {                                                           \
+        static MVEGenVADDVFn * const fns[] = {                  \
+            NULL,                                               \
+            gen_helper_mve_##FN##h,                             \
+            gen_helper_mve_##FN##s,                             \
+            NULL,                                               \
+        };                                                      \
+        if (!dc_isar_feature(aa32_mve_fp, s)) {                 \
+            return false;                                       \
+        }                                                       \
+        return do_vmaxv(s, a, fns[a->size]);                    \
+    }
+
+DO_VMAXV_FP(VMAXNMV, vmaxnmv)
+DO_VMAXV_FP(VMINNMV, vminnmv)
+DO_VMAXV_FP(VMAXNMAV, vmaxnmav)
+DO_VMAXV_FP(VMINNMAV, vminnmav)
+
 static bool do_vabav(DisasContext *s, arg_vabav *a, MVEGenVABAVFn *fn)
 {
     /* Absolute difference accumulated across vector */
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 16/51] target/arm: Implement MVE fp vector comparisons
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (14 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 15/51] target/arm: Implement MVE FP max/min across vector Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 17/51] target/arm: Implement MVE fp scalar comparisons Peter Maydell
                   ` (35 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

Implement the MVE fp vector comparisons VCMP and VPT.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/arm/helper-mve.h    | 18 +++++++++++
 target/arm/mve.decode      | 39 +++++++++++++++++++----
 target/arm/mve_helper.c    | 64 ++++++++++++++++++++++++++++++++++++++
 target/arm/translate-mve.c | 22 +++++++++++++
 4 files changed, 137 insertions(+), 6 deletions(-)

diff --git a/target/arm/helper-mve.h b/target/arm/helper-mve.h
index 47fd18dddbf..0c15c531641 100644
--- a/target/arm/helper-mve.h
+++ b/target/arm/helper-mve.h
@@ -813,6 +813,24 @@ DEF_HELPER_FLAGS_3(mve_vcmple_scalarb, TCG_CALL_NO_WG, void, env, ptr, i32)
 DEF_HELPER_FLAGS_3(mve_vcmple_scalarh, TCG_CALL_NO_WG, void, env, ptr, i32)
 DEF_HELPER_FLAGS_3(mve_vcmple_scalarw, TCG_CALL_NO_WG, void, env, ptr, i32)
 
+DEF_HELPER_FLAGS_3(mve_vfcmpeqh, TCG_CALL_NO_WG, void, env, ptr, ptr)
+DEF_HELPER_FLAGS_3(mve_vfcmpeqs, TCG_CALL_NO_WG, void, env, ptr, ptr)
+
+DEF_HELPER_FLAGS_3(mve_vfcmpneh, TCG_CALL_NO_WG, void, env, ptr, ptr)
+DEF_HELPER_FLAGS_3(mve_vfcmpnes, TCG_CALL_NO_WG, void, env, ptr, ptr)
+
+DEF_HELPER_FLAGS_3(mve_vfcmpgeh, TCG_CALL_NO_WG, void, env, ptr, ptr)
+DEF_HELPER_FLAGS_3(mve_vfcmpges, TCG_CALL_NO_WG, void, env, ptr, ptr)
+
+DEF_HELPER_FLAGS_3(mve_vfcmplth, TCG_CALL_NO_WG, void, env, ptr, ptr)
+DEF_HELPER_FLAGS_3(mve_vfcmplts, TCG_CALL_NO_WG, void, env, ptr, ptr)
+
+DEF_HELPER_FLAGS_3(mve_vfcmpgth, TCG_CALL_NO_WG, void, env, ptr, ptr)
+DEF_HELPER_FLAGS_3(mve_vfcmpgts, TCG_CALL_NO_WG, void, env, ptr, ptr)
+
+DEF_HELPER_FLAGS_3(mve_vfcmpleh, TCG_CALL_NO_WG, void, env, ptr, ptr)
+DEF_HELPER_FLAGS_3(mve_vfcmples, TCG_CALL_NO_WG, void, env, ptr, ptr)
+
 DEF_HELPER_FLAGS_4(mve_vfadd_scalarh, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
 DEF_HELPER_FLAGS_4(mve_vfadd_scalars, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
 
diff --git a/target/arm/mve.decode b/target/arm/mve.decode
index a46372f8c77..49b7ef35937 100644
--- a/target/arm/mve.decode
+++ b/target/arm/mve.decode
@@ -124,6 +124,9 @@
 @vcmp_scalar .... .... .. size:2 qn:3 . .... .... .... rm:4 &vcmp_scalar \
              mask=%mask_22_13
 
+@vcmp_fp .... .... .... qn:3 . .... .... .... .... &vcmp \
+         qm=%qm size=%2op_fp_scalar_size mask=%mask_22_13
+
 @vmaxv .... .... .... size:2 .. rda:4 .... .... .... &vmaxv qm=%qm
 
 @2op_fp .... .... .... .... .... .... .... .... &2op \
@@ -671,17 +674,41 @@ VSHLC             111 0 1110 1 . 1 imm:5 ... 0 1111 1100 rdm:4 qd=%qd
 # Comparisons. We expand out the conditions which are split across
 # encodings T1, T2, T3 and the fc bits. These include VPT, which is
 # effectively "VCMP then VPST". A plain "VCMP" has a mask field of zero.
-VCMPEQ            1111 1110 0 . .. ... 1 ... 0 1111 0 0 . 0 ... 0 @vcmp
-VCMPNE            1111 1110 0 . .. ... 1 ... 0 1111 1 0 . 0 ... 0 @vcmp
+{
+  VCMPEQ_fp       111 . 1110 0 . 11 ... 1 ... 0 1111 0 0 . 0 ... 0 @vcmp_fp
+  VCMPEQ          111 1 1110 0 . .. ... 1 ... 0 1111 0 0 . 0 ... 0 @vcmp
+}
+
+{
+  VCMPNE_fp       111 . 1110 0 . 11 ... 1 ... 0 1111 1 0 . 0 ... 0 @vcmp_fp
+  VCMPNE          111 1 1110 0 . .. ... 1 ... 0 1111 1 0 . 0 ... 0 @vcmp
+}
+
+{
+  VCMPGE_fp       111 . 1110 0 . 11 ... 1 ... 1 1111 0 0 . 0 ... 0 @vcmp_fp
+  VCMPGE          111 1 1110 0 . .. ... 1 ... 1 1111 0 0 . 0 ... 0 @vcmp
+}
+
+{
+  VCMPLT_fp       111 . 1110 0 . 11 ... 1 ... 1 1111 1 0 . 0 ... 0 @vcmp_fp
+  VCMPLT          111 1 1110 0 . .. ... 1 ... 1 1111 1 0 . 0 ... 0 @vcmp
+}
+
+{
+  VCMPGT_fp       111 . 1110 0 . 11 ... 1 ... 1 1111 0 0 . 0 ... 1 @vcmp_fp
+  VCMPGT          111 1 1110 0 . .. ... 1 ... 1 1111 0 0 . 0 ... 1 @vcmp
+}
+
+{
+  VCMPLE_fp         111 . 1110 0 . 11 ... 1 ... 1 1111 1 0 . 0 ... 1 @vcmp_fp
+  VCMPLE            1111 1110 0 . .. ... 1 ... 1 1111 1 0 . 0 ... 1 @vcmp
+}
+
 {
   VPSEL           1111 1110 0 . 11 ... 1 ... 0 1111 . 0 . 0 ... 1 @2op_nosz
   VCMPCS          1111 1110 0 . .. ... 1 ... 0 1111 0 0 . 0 ... 1 @vcmp
   VCMPHI          1111 1110 0 . .. ... 1 ... 0 1111 1 0 . 0 ... 1 @vcmp
 }
-VCMPGE            1111 1110 0 . .. ... 1 ... 1 1111 0 0 . 0 ... 0 @vcmp
-VCMPLT            1111 1110 0 . .. ... 1 ... 1 1111 1 0 . 0 ... 0 @vcmp
-VCMPGT            1111 1110 0 . .. ... 1 ... 1 1111 0 0 . 0 ... 1 @vcmp
-VCMPLE            1111 1110 0 . .. ... 1 ... 1 1111 1 0 . 0 ... 1 @vcmp
 
 {
   VPNOT           1111 1110 0 0 11 000 1 000 0 1111 0100 1101
diff --git a/target/arm/mve_helper.c b/target/arm/mve_helper.c
index 52e5a8f2a8b..07a1ab88814 100644
--- a/target/arm/mve_helper.c
+++ b/target/arm/mve_helper.c
@@ -3156,3 +3156,67 @@ DO_FP_VMAXMINV(vmaxnmavh, 2, float16, true, float16_maxnum)
 DO_FP_VMAXMINV(vmaxnmavs, 4, float32, true, float32_maxnum)
 DO_FP_VMAXMINV(vminnmavh, 2, float16, true, float16_minnum)
 DO_FP_VMAXMINV(vminnmavs, 4, float32, true, float32_minnum)
+
+/* FP compares; note that all comparisons signal InvalidOp for QNaNs */
+#define DO_VCMP_FP(OP, ESIZE, TYPE, FN)                                 \
+    void HELPER(glue(mve_, OP))(CPUARMState *env, void *vn, void *vm)   \
+    {                                                                   \
+        TYPE *n = vn, *m = vm;                                          \
+        uint16_t mask = mve_element_mask(env);                          \
+        uint16_t eci_mask = mve_eci_mask(env);                          \
+        uint16_t beatpred = 0;                                          \
+        uint16_t emask = MAKE_64BIT_MASK(0, ESIZE);                     \
+        unsigned e;                                                     \
+        float_status *fpst;                                             \
+        float_status scratch_fpst;                                      \
+        bool r;                                                         \
+        for (e = 0; e < 16 / ESIZE; e++, emask <<= ESIZE) {             \
+            if ((mask & emask) == 0) {                                  \
+                continue;                                               \
+            }                                                           \
+            fpst = (ESIZE == 2) ? &env->vfp.standard_fp_status_f16 :    \
+                &env->vfp.standard_fp_status;                           \
+            if (!(mask & (1 << (e * ESIZE)))) {                         \
+                /* We need the result but without updating flags */     \
+                scratch_fpst = *fpst;                                   \
+                fpst = &scratch_fpst;                                   \
+            }                                                           \
+            r = FN(n[H##ESIZE(e)], m[H##ESIZE(e)], fpst);               \
+            /* Comparison sets 0/1 bits for each byte in the element */ \
+            beatpred |= r * emask;                                      \
+        }                                                               \
+        beatpred &= mask;                                               \
+        env->v7m.vpr = (env->v7m.vpr & ~(uint32_t)eci_mask) |           \
+            (beatpred & eci_mask);                                      \
+        mve_advance_vpt(env);                                           \
+    }
+
+/*
+ * Some care is needed here to get the correct result for the unordered case.
+ * Architecturally EQ, GE and GT are defined to be false for unordered, but
+ * the NE, LT and LE comparisons are defined as simple logical inverses of
+ * EQ, GE and GT and so they must return true for unordered. The softfloat
+ * comparison functions float*_{eq,le,lt} all return false for unordered.
+ */
+#define DO_GE16(X, Y, S) float16_le(Y, X, S)
+#define DO_GE32(X, Y, S) float32_le(Y, X, S)
+#define DO_GT16(X, Y, S) float16_lt(Y, X, S)
+#define DO_GT32(X, Y, S) float32_lt(Y, X, S)
+
+DO_VCMP_FP(vfcmpeqh, 2, float16, float16_eq)
+DO_VCMP_FP(vfcmpeqs, 4, float32, float32_eq)
+
+DO_VCMP_FP(vfcmpneh, 2, float16, !float16_eq)
+DO_VCMP_FP(vfcmpnes, 4, float32, !float32_eq)
+
+DO_VCMP_FP(vfcmpgeh, 2, float16, DO_GE16)
+DO_VCMP_FP(vfcmpges, 4, float32, DO_GE32)
+
+DO_VCMP_FP(vfcmplth, 2, float16, !DO_GE16)
+DO_VCMP_FP(vfcmplts, 4, float32, !DO_GE32)
+
+DO_VCMP_FP(vfcmpgth, 2, float16, DO_GT16)
+DO_VCMP_FP(vfcmpgts, 4, float32, DO_GT32)
+
+DO_VCMP_FP(vfcmpleh, 2, float16, !DO_GT16)
+DO_VCMP_FP(vfcmples, 4, float32, !DO_GT32)
diff --git a/target/arm/translate-mve.c b/target/arm/translate-mve.c
index 4e2aa2cae2d..da14a6f790e 100644
--- a/target/arm/translate-mve.c
+++ b/target/arm/translate-mve.c
@@ -1758,6 +1758,28 @@ DO_VCMP(VCMPLT, vcmplt)
 DO_VCMP(VCMPGT, vcmpgt)
 DO_VCMP(VCMPLE, vcmple)
 
+#define DO_VCMP_FP(INSN, FN)                                    \
+    static bool trans_##INSN(DisasContext *s, arg_vcmp *a)      \
+    {                                                           \
+        static MVEGenCmpFn * const fns[] = {                    \
+            NULL,                                               \
+            gen_helper_mve_##FN##h,                             \
+            gen_helper_mve_##FN##s,                             \
+            NULL,                                               \
+        };                                                      \
+        if (!dc_isar_feature(aa32_mve_fp, s)) {                 \
+            return false;                                       \
+        }                                                       \
+        return do_vcmp(s, a, fns[a->size]);                     \
+    }
+
+DO_VCMP_FP(VCMPEQ_fp, vfcmpeq)
+DO_VCMP_FP(VCMPNE_fp, vfcmpne)
+DO_VCMP_FP(VCMPGE_fp, vfcmpge)
+DO_VCMP_FP(VCMPLT_fp, vfcmplt)
+DO_VCMP_FP(VCMPGT_fp, vfcmpgt)
+DO_VCMP_FP(VCMPLE_fp, vfcmple)
+
 static bool do_vmaxv(DisasContext *s, arg_vmaxv *a, MVEGenVADDVFn fn)
 {
     /*
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 17/51] target/arm: Implement MVE fp scalar comparisons
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (15 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 16/51] target/arm: Implement MVE fp vector comparisons Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 18/51] target/arm: Implement MVE VCVT between floating and fixed point Peter Maydell
                   ` (34 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

Implement the MVE fp scalar comparisons VCMP and VPT.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/arm/helper-mve.h    | 18 +++++++++++
 target/arm/mve.decode      | 61 +++++++++++++++++++++++++++++--------
 target/arm/mve_helper.c    | 62 ++++++++++++++++++++++++++++++--------
 target/arm/translate-mve.c | 14 +++++++++
 4 files changed, 131 insertions(+), 24 deletions(-)

diff --git a/target/arm/helper-mve.h b/target/arm/helper-mve.h
index 0c15c531641..9ee841cdf01 100644
--- a/target/arm/helper-mve.h
+++ b/target/arm/helper-mve.h
@@ -831,6 +831,24 @@ DEF_HELPER_FLAGS_3(mve_vfcmpgts, TCG_CALL_NO_WG, void, env, ptr, ptr)
 DEF_HELPER_FLAGS_3(mve_vfcmpleh, TCG_CALL_NO_WG, void, env, ptr, ptr)
 DEF_HELPER_FLAGS_3(mve_vfcmples, TCG_CALL_NO_WG, void, env, ptr, ptr)
 
+DEF_HELPER_FLAGS_3(mve_vfcmpeq_scalarh, TCG_CALL_NO_WG, void, env, ptr, i32)
+DEF_HELPER_FLAGS_3(mve_vfcmpeq_scalars, TCG_CALL_NO_WG, void, env, ptr, i32)
+
+DEF_HELPER_FLAGS_3(mve_vfcmpne_scalarh, TCG_CALL_NO_WG, void, env, ptr, i32)
+DEF_HELPER_FLAGS_3(mve_vfcmpne_scalars, TCG_CALL_NO_WG, void, env, ptr, i32)
+
+DEF_HELPER_FLAGS_3(mve_vfcmpge_scalarh, TCG_CALL_NO_WG, void, env, ptr, i32)
+DEF_HELPER_FLAGS_3(mve_vfcmpge_scalars, TCG_CALL_NO_WG, void, env, ptr, i32)
+
+DEF_HELPER_FLAGS_3(mve_vfcmplt_scalarh, TCG_CALL_NO_WG, void, env, ptr, i32)
+DEF_HELPER_FLAGS_3(mve_vfcmplt_scalars, TCG_CALL_NO_WG, void, env, ptr, i32)
+
+DEF_HELPER_FLAGS_3(mve_vfcmpgt_scalarh, TCG_CALL_NO_WG, void, env, ptr, i32)
+DEF_HELPER_FLAGS_3(mve_vfcmpgt_scalars, TCG_CALL_NO_WG, void, env, ptr, i32)
+
+DEF_HELPER_FLAGS_3(mve_vfcmple_scalarh, TCG_CALL_NO_WG, void, env, ptr, i32)
+DEF_HELPER_FLAGS_3(mve_vfcmple_scalars, TCG_CALL_NO_WG, void, env, ptr, i32)
+
 DEF_HELPER_FLAGS_4(mve_vfadd_scalarh, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
 DEF_HELPER_FLAGS_4(mve_vfadd_scalars, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
 
diff --git a/target/arm/mve.decode b/target/arm/mve.decode
index 49b7ef35937..f1b8afb4778 100644
--- a/target/arm/mve.decode
+++ b/target/arm/mve.decode
@@ -127,6 +127,11 @@
 @vcmp_fp .... .... .... qn:3 . .... .... .... .... &vcmp \
          qm=%qm size=%2op_fp_scalar_size mask=%mask_22_13
 
+# Bit 28 is a 2op_fp_scalar_size bit, but we do not decode it in this
+# format to avoid complicated overlapping-instruction-groups
+@vcmp_fp_scalar .... .... .... qn:3 . .... .... .... rm:4 &vcmp_scalar \
+                mask=%mask_22_13
+
 @vmaxv .... .... .... size:2 .. rda:4 .... .... .... &vmaxv qm=%qm
 
 @2op_fp .... .... .... .... .... .... .... .... &2op \
@@ -400,8 +405,10 @@ VDUP             1110 1110 1 0 10 ... 0 .... 1011 . 0 0 1 0000 @vdup size=2
   VIWDUP         1110 1110 0 . .. ... 1 ... 0 1111 . 110 ... . @viwdup
 }
 {
-  VDDUP          1110 1110 0 . .. ... 1 ... 1 1111 . 110 111 . @vidup
-  VDWDUP         1110 1110 0 . .. ... 1 ... 1 1111 . 110 ... . @viwdup
+  VCMPGT_fp_scalar 1110 1110 0 . 11 ... 1 ... 1 1111  0110 .... @vcmp_fp_scalar size=2
+  VCMPLE_fp_scalar 1110 1110 0 . 11 ... 1 ... 1 1111  1110 .... @vcmp_fp_scalar size=2
+  VDDUP            1110 1110 0 . .. ... 1 ... 1 1111 . 110 111 . @vidup
+  VDWDUP           1110 1110 0 . .. ... 1 ... 1 1111 . 110 ... . @viwdup
 }
 
 # multiply-add long dual accumulate
@@ -480,8 +487,17 @@ VMLADAV_U        1111 1110 1111  ... 0 ... . 1111 . 0 . 0 ... 1 @vmladav_nosz
 
 # Scalar operations
 
-VADD_scalar      1110 1110 0 . .. ... 1 ... 0 1111 . 100 .... @2scalar
-VSUB_scalar      1110 1110 0 . .. ... 1 ... 1 1111 . 100 .... @2scalar
+{
+  VCMPEQ_fp_scalar 1110 1110 0 . 11 ... 1 ... 0 1111  0100 .... @vcmp_fp_scalar size=2
+  VCMPNE_fp_scalar 1110 1110 0 . 11 ... 1 ... 0 1111  1100 .... @vcmp_fp_scalar size=2
+  VADD_scalar      1110 1110 0 . .. ... 1 ... 0 1111 . 100 .... @2scalar
+}
+
+{
+  VCMPLT_fp_scalar 1110 1110 0 . 11 ... 1 ... 1 1111  1100 .... @vcmp_fp_scalar size=2
+  VCMPGE_fp_scalar 1110 1110 0 . 11 ... 1 ... 1 1111  0100 .... @vcmp_fp_scalar size=2
+  VSUB_scalar      1110 1110 0 . .. ... 1 ... 1 1111 . 100 .... @2scalar
+}
 
 {
   VSHL_S_scalar   1110 1110 0 . 11 .. 01 ... 1 1110 0110 .... @shl_scalar
@@ -711,17 +727,38 @@ VSHLC             111 0 1110 1 . 1 imm:5 ... 0 1111 1100 rdm:4 qd=%qd
 }
 
 {
-  VPNOT           1111 1110 0 0 11 000 1 000 0 1111 0100 1101
-  VPST            1111 1110 0 . 11 000 1 ... 0 1111 0100 1101 mask=%mask_22_13
-  VCMPEQ_scalar   1111 1110 0 . .. ... 1 ... 0 1111 0 1 0 0 .... @vcmp_scalar
+  VPNOT            1111 1110 0 0 11 000 1 000 0 1111 0100 1101
+  VPST             1111 1110 0 . 11 000 1 ... 0 1111 0100 1101 mask=%mask_22_13
+  VCMPEQ_fp_scalar 1111 1110 0 . 11 ... 1 ... 0 1111 0100 .... @vcmp_fp_scalar size=1
+  VCMPEQ_scalar    1111 1110 0 . .. ... 1 ... 0 1111 0100 .... @vcmp_scalar
 }
-VCMPNE_scalar     1111 1110 0 . .. ... 1 ... 0 1111 1 1 0 0 .... @vcmp_scalar
+
+{
+  VCMPNE_fp_scalar 1111 1110 0 . 11 ... 1 ... 0 1111 1100 .... @vcmp_fp_scalar size=1
+  VCMPNE_scalar    1111 1110 0 . .. ... 1 ... 0 1111 1100 .... @vcmp_scalar
+}
+
+{
+  VCMPGT_fp_scalar 1111 1110 0 . 11 ... 1 ... 1 1111 0110 .... @vcmp_fp_scalar size=1
+  VCMPGT_scalar    1111 1110 0 . .. ... 1 ... 1 1111 0110 .... @vcmp_scalar
+}
+
+{
+  VCMPLE_fp_scalar 1111 1110 0 . 11 ... 1 ... 1 1111 1110 .... @vcmp_fp_scalar size=1
+  VCMPLE_scalar    1111 1110 0 . .. ... 1 ... 1 1111 1110 .... @vcmp_scalar
+}
+
+{
+  VCMPGE_fp_scalar 1111 1110 0 . 11 ... 1 ... 1 1111 0100 .... @vcmp_fp_scalar size=1
+  VCMPGE_scalar    1111 1110 0 . .. ... 1 ... 1 1111 0100 .... @vcmp_scalar
+}
+{
+  VCMPLT_fp_scalar 1111 1110 0 . 11 ... 1 ... 1 1111 1100 .... @vcmp_fp_scalar size=1
+  VCMPLT_scalar    1111 1110 0 . .. ... 1 ... 1 1111 1100 .... @vcmp_scalar
+}
+
 VCMPCS_scalar     1111 1110 0 . .. ... 1 ... 0 1111 0 1 1 0 .... @vcmp_scalar
 VCMPHI_scalar     1111 1110 0 . .. ... 1 ... 0 1111 1 1 1 0 .... @vcmp_scalar
-VCMPGE_scalar     1111 1110 0 . .. ... 1 ... 1 1111 0 1 0 0 .... @vcmp_scalar
-VCMPLT_scalar     1111 1110 0 . .. ... 1 ... 1 1111 1 1 0 0 .... @vcmp_scalar
-VCMPGT_scalar     1111 1110 0 . .. ... 1 ... 1 1111 0 1 1 0 .... @vcmp_scalar
-VCMPLE_scalar     1111 1110 0 . .. ... 1 ... 1 1111 1 1 1 0 .... @vcmp_scalar
 
 # 2-operand FP
 VADD_fp           1110 1111 0 . 0 . ... 0 ... 0 1101 . 1 . 0 ... 0 @2op_fp
diff --git a/target/arm/mve_helper.c b/target/arm/mve_helper.c
index 07a1ab88814..891926c124d 100644
--- a/target/arm/mve_helper.c
+++ b/target/arm/mve_helper.c
@@ -3191,6 +3191,44 @@ DO_FP_VMAXMINV(vminnmavs, 4, float32, true, float32_minnum)
         mve_advance_vpt(env);                                           \
     }
 
+#define DO_VCMP_FP_SCALAR(OP, ESIZE, TYPE, FN)                          \
+    void HELPER(glue(mve_, OP))(CPUARMState *env, void *vn,             \
+                                uint32_t rm)                            \
+    {                                                                   \
+        TYPE *n = vn;                                                   \
+        uint16_t mask = mve_element_mask(env);                          \
+        uint16_t eci_mask = mve_eci_mask(env);                          \
+        uint16_t beatpred = 0;                                          \
+        uint16_t emask = MAKE_64BIT_MASK(0, ESIZE);                     \
+        unsigned e;                                                     \
+        float_status *fpst;                                             \
+        float_status scratch_fpst;                                      \
+        bool r;                                                         \
+        for (e = 0; e < 16 / ESIZE; e++, emask <<= ESIZE) {             \
+            if ((mask & emask) == 0) {                                  \
+                continue;                                               \
+            }                                                           \
+            fpst = (ESIZE == 2) ? &env->vfp.standard_fp_status_f16 :    \
+                &env->vfp.standard_fp_status;                           \
+            if (!(mask & (1 << (e * ESIZE)))) {                         \
+                /* We need the result but without updating flags */     \
+                scratch_fpst = *fpst;                                   \
+                fpst = &scratch_fpst;                                   \
+            }                                                           \
+            r = FN(n[H##ESIZE(e)], (TYPE)rm, fpst);                     \
+            /* Comparison sets 0/1 bits for each byte in the element */ \
+            beatpred |= r * emask;                                      \
+        }                                                               \
+        beatpred &= mask;                                               \
+        env->v7m.vpr = (env->v7m.vpr & ~(uint32_t)eci_mask) |           \
+            (beatpred & eci_mask);                                      \
+        mve_advance_vpt(env);                                           \
+    }
+
+#define DO_VCMP_FP_BOTH(VOP, SOP, ESIZE, TYPE, FN)      \
+    DO_VCMP_FP(VOP, ESIZE, TYPE, FN)                    \
+    DO_VCMP_FP_SCALAR(SOP, ESIZE, TYPE, FN)
+
 /*
  * Some care is needed here to get the correct result for the unordered case.
  * Architecturally EQ, GE and GT are defined to be false for unordered, but
@@ -3203,20 +3241,20 @@ DO_FP_VMAXMINV(vminnmavs, 4, float32, true, float32_minnum)
 #define DO_GT16(X, Y, S) float16_lt(Y, X, S)
 #define DO_GT32(X, Y, S) float32_lt(Y, X, S)
 
-DO_VCMP_FP(vfcmpeqh, 2, float16, float16_eq)
-DO_VCMP_FP(vfcmpeqs, 4, float32, float32_eq)
+DO_VCMP_FP_BOTH(vfcmpeqh, vfcmpeq_scalarh, 2, float16, float16_eq)
+DO_VCMP_FP_BOTH(vfcmpeqs, vfcmpeq_scalars, 4, float32, float32_eq)
 
-DO_VCMP_FP(vfcmpneh, 2, float16, !float16_eq)
-DO_VCMP_FP(vfcmpnes, 4, float32, !float32_eq)
+DO_VCMP_FP_BOTH(vfcmpneh, vfcmpne_scalarh, 2, float16, !float16_eq)
+DO_VCMP_FP_BOTH(vfcmpnes, vfcmpne_scalars, 4, float32, !float32_eq)
 
-DO_VCMP_FP(vfcmpgeh, 2, float16, DO_GE16)
-DO_VCMP_FP(vfcmpges, 4, float32, DO_GE32)
+DO_VCMP_FP_BOTH(vfcmpgeh, vfcmpge_scalarh, 2, float16, DO_GE16)
+DO_VCMP_FP_BOTH(vfcmpges, vfcmpge_scalars, 4, float32, DO_GE32)
 
-DO_VCMP_FP(vfcmplth, 2, float16, !DO_GE16)
-DO_VCMP_FP(vfcmplts, 4, float32, !DO_GE32)
+DO_VCMP_FP_BOTH(vfcmplth, vfcmplt_scalarh, 2, float16, !DO_GE16)
+DO_VCMP_FP_BOTH(vfcmplts, vfcmplt_scalars, 4, float32, !DO_GE32)
 
-DO_VCMP_FP(vfcmpgth, 2, float16, DO_GT16)
-DO_VCMP_FP(vfcmpgts, 4, float32, DO_GT32)
+DO_VCMP_FP_BOTH(vfcmpgth, vfcmpgt_scalarh, 2, float16, DO_GT16)
+DO_VCMP_FP_BOTH(vfcmpgts, vfcmpgt_scalars, 4, float32, DO_GT32)
 
-DO_VCMP_FP(vfcmpleh, 2, float16, !DO_GT16)
-DO_VCMP_FP(vfcmples, 4, float32, !DO_GT32)
+DO_VCMP_FP_BOTH(vfcmpleh, vfcmple_scalarh, 2, float16, !DO_GT16)
+DO_VCMP_FP_BOTH(vfcmples, vfcmple_scalars, 4, float32, !DO_GT32)
diff --git a/target/arm/translate-mve.c b/target/arm/translate-mve.c
index da14a6f790e..e8a3dec6683 100644
--- a/target/arm/translate-mve.c
+++ b/target/arm/translate-mve.c
@@ -1771,6 +1771,20 @@ DO_VCMP(VCMPLE, vcmple)
             return false;                                       \
         }                                                       \
         return do_vcmp(s, a, fns[a->size]);                     \
+    }                                                           \
+    static bool trans_##INSN##_scalar(DisasContext *s,          \
+                                      arg_vcmp_scalar *a)       \
+    {                                                           \
+        static MVEGenScalarCmpFn * const fns[] = {              \
+            NULL,                                               \
+            gen_helper_mve_##FN##_scalarh,                      \
+            gen_helper_mve_##FN##_scalars,                      \
+            NULL,                                               \
+        };                                                      \
+        if (!dc_isar_feature(aa32_mve_fp, s)) {                 \
+            return false;                                       \
+        }                                                       \
+        return do_vcmp_scalar(s, a, fns[a->size]);              \
     }
 
 DO_VCMP_FP(VCMPEQ_fp, vfcmpeq)
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 18/51] target/arm: Implement MVE VCVT between floating and fixed point
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (16 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 17/51] target/arm: Implement MVE fp scalar comparisons Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 19/51] target/arm: Implement MVE VCVT between fp and integer Peter Maydell
                   ` (33 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

Implement the MVE VCVT insns which convert between floating and fixed
point.  As with the Neon equivalents, these use essentially the same
constant encoding as right-shift-by-immediate.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/arm/helper-mve.h    |  9 +++++++++
 target/arm/mve.decode      | 19 +++++++++++++++++++
 target/arm/mve_helper.c    | 36 ++++++++++++++++++++++++++++++++++++
 target/arm/translate-mve.c | 18 ++++++++++++++++++
 4 files changed, 82 insertions(+)

diff --git a/target/arm/helper-mve.h b/target/arm/helper-mve.h
index 9ee841cdf01..f3c2b43bf43 100644
--- a/target/arm/helper-mve.h
+++ b/target/arm/helper-mve.h
@@ -863,3 +863,12 @@ DEF_HELPER_FLAGS_4(mve_vfma_scalars, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
 
 DEF_HELPER_FLAGS_4(mve_vfmas_scalarh, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
 DEF_HELPER_FLAGS_4(mve_vfmas_scalars, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
+
+DEF_HELPER_FLAGS_4(mve_vcvt_sh, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(mve_vcvt_uh, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(mve_vcvt_hs, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(mve_vcvt_hu, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(mve_vcvt_sf, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(mve_vcvt_uf, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(mve_vcvt_fs, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(mve_vcvt_fu, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
diff --git a/target/arm/mve.decode b/target/arm/mve.decode
index f1b8afb4778..d93083065d6 100644
--- a/target/arm/mve.decode
+++ b/target/arm/mve.decode
@@ -779,3 +779,22 @@ VCMLA0            1111 110 00 . 1 . ... 0 ... 0 1000 . 1 . 0 ... 0 @2op_fp_size_
 VCMLA90           1111 110 01 . 1 . ... 0 ... 0 1000 . 1 . 0 ... 0 @2op_fp_size_rev
 VCMLA180          1111 110 10 . 1 . ... 0 ... 0 1000 . 1 . 0 ... 0 @2op_fp_size_rev
 VCMLA270          1111 110 11 . 1 . ... 0 ... 0 1000 . 1 . 0 ... 0 @2op_fp_size_rev
+
+# floating-point <-> fixed-point conversions. Naming convention:
+# VCVT_<from><to>, S = signed int, U = unsigned int, H = halfprec, F = singleprec
+@vcvt             .... .... .. 1 ..... .... .. 1 . .... .... &2shift \
+                  qd=%qd qm=%qm shift=%rshift_i5 size=2
+@vcvt_f16         .... .... .. 11 .... .... .. 0 . .... .... &2shift \
+                  qd=%qd qm=%qm shift=%rshift_i4 size=1
+
+VCVT_SH_fixed     1110 1111 1 . ...... ... 0 11 . 0 01 . 1 ... 0 @vcvt_f16
+VCVT_UH_fixed     1111 1111 1 . ...... ... 0 11 . 0 01 . 1 ... 0 @vcvt_f16
+
+VCVT_HS_fixed     1110 1111 1 . ...... ... 0 11 . 1 01 . 1 ... 0 @vcvt_f16
+VCVT_HU_fixed     1111 1111 1 . ...... ... 0 11 . 1 01 . 1 ... 0 @vcvt_f16
+
+VCVT_SF_fixed     1110 1111 1 . ...... ... 0 11 . 0 01 . 1 ... 0 @vcvt
+VCVT_UF_fixed     1111 1111 1 . ...... ... 0 11 . 0 01 . 1 ... 0 @vcvt
+
+VCVT_FS_fixed     1110 1111 1 . ...... ... 0 11 . 1 01 . 1 ... 0 @vcvt
+VCVT_FU_fixed     1111 1111 1 . ...... ... 0 11 . 1 01 . 1 ... 0 @vcvt
diff --git a/target/arm/mve_helper.c b/target/arm/mve_helper.c
index 891926c124d..d829ffe12d6 100644
--- a/target/arm/mve_helper.c
+++ b/target/arm/mve_helper.c
@@ -3258,3 +3258,39 @@ DO_VCMP_FP_BOTH(vfcmpgts, vfcmpgt_scalars, 4, float32, DO_GT32)
 
 DO_VCMP_FP_BOTH(vfcmpleh, vfcmple_scalarh, 2, float16, !DO_GT16)
 DO_VCMP_FP_BOTH(vfcmples, vfcmple_scalars, 4, float32, !DO_GT32)
+
+#define DO_VCVT_FIXED(OP, ESIZE, TYPE, FN)                              \
+    void HELPER(glue(mve_, OP))(CPUARMState *env, void *vd, void *vm,   \
+                                uint32_t shift)                         \
+    {                                                                   \
+        TYPE *d = vd, *m = vm;                                          \
+        TYPE r;                                                         \
+        uint16_t mask = mve_element_mask(env);                          \
+        unsigned e;                                                     \
+        float_status *fpst;                                             \
+        float_status scratch_fpst;                                      \
+        for (e = 0; e < 16 / ESIZE; e++, mask >>= ESIZE) {              \
+            if ((mask & MAKE_64BIT_MASK(0, ESIZE)) == 0) {              \
+                continue;                                               \
+            }                                                           \
+            fpst = (ESIZE == 2) ? &env->vfp.standard_fp_status_f16 :    \
+                &env->vfp.standard_fp_status;                           \
+            if (!(mask & 1)) {                                          \
+                /* We need the result but without updating flags */     \
+                scratch_fpst = *fpst;                                   \
+                fpst = &scratch_fpst;                                   \
+            }                                                           \
+            r = FN(m[H##ESIZE(e)], shift, fpst);                        \
+            mergemask(&d[H##ESIZE(e)], r, mask);                        \
+        }                                                               \
+        mve_advance_vpt(env);                                           \
+    }
+
+DO_VCVT_FIXED(vcvt_sh, 2, int16_t, helper_vfp_shtoh)
+DO_VCVT_FIXED(vcvt_uh, 2, uint16_t, helper_vfp_uhtoh)
+DO_VCVT_FIXED(vcvt_hs, 2, int16_t, helper_vfp_toshh_round_to_zero)
+DO_VCVT_FIXED(vcvt_hu, 2, uint16_t, helper_vfp_touhh_round_to_zero)
+DO_VCVT_FIXED(vcvt_sf, 4, int32_t, helper_vfp_sltos)
+DO_VCVT_FIXED(vcvt_uf, 4, uint32_t, helper_vfp_ultos)
+DO_VCVT_FIXED(vcvt_fs, 4, int32_t, helper_vfp_tosls_round_to_zero)
+DO_VCVT_FIXED(vcvt_fu, 4, uint32_t, helper_vfp_touls_round_to_zero)
diff --git a/target/arm/translate-mve.c b/target/arm/translate-mve.c
index e8a3dec6683..9269dbc3324 100644
--- a/target/arm/translate-mve.c
+++ b/target/arm/translate-mve.c
@@ -1439,6 +1439,24 @@ DO_2SHIFT(VRSHRI_U, vrshli_u, true)
 DO_2SHIFT(VSRI, vsri, false)
 DO_2SHIFT(VSLI, vsli, false)
 
+#define DO_2SHIFT_FP(INSN, FN)                                  \
+    static bool trans_##INSN(DisasContext *s, arg_2shift *a)    \
+    {                                                           \
+        if (!dc_isar_feature(aa32_mve_fp, s)) {                 \
+            return false;                                       \
+        }                                                       \
+        return do_2shift(s, a, gen_helper_mve_##FN, false);     \
+    }
+
+DO_2SHIFT_FP(VCVT_SH_fixed, vcvt_sh)
+DO_2SHIFT_FP(VCVT_UH_fixed, vcvt_uh)
+DO_2SHIFT_FP(VCVT_HS_fixed, vcvt_hs)
+DO_2SHIFT_FP(VCVT_HU_fixed, vcvt_hu)
+DO_2SHIFT_FP(VCVT_SF_fixed, vcvt_sf)
+DO_2SHIFT_FP(VCVT_UF_fixed, vcvt_uf)
+DO_2SHIFT_FP(VCVT_FS_fixed, vcvt_fs)
+DO_2SHIFT_FP(VCVT_FU_fixed, vcvt_fu)
+
 static bool do_2shift_scalar(DisasContext *s, arg_shl_scalar *a,
                              MVEGenTwoOpShiftFn *fn)
 {
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 19/51] target/arm: Implement MVE VCVT between fp and integer
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (17 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 18/51] target/arm: Implement MVE VCVT between floating and fixed point Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 20/51] target/arm: Implement MVE VCVT with specified rounding mode Peter Maydell
                   ` (32 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

Implement the MVE "VCVT (between floating-point and integer)" insn.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/arm/mve.decode      |  7 +++++++
 target/arm/translate-mve.c | 32 ++++++++++++++++++++++++++++++++
 2 files changed, 39 insertions(+)

diff --git a/target/arm/mve.decode b/target/arm/mve.decode
index d93083065d6..89b8c6fc8e6 100644
--- a/target/arm/mve.decode
+++ b/target/arm/mve.decode
@@ -798,3 +798,10 @@ VCVT_UF_fixed     1111 1111 1 . ...... ... 0 11 . 0 01 . 1 ... 0 @vcvt
 
 VCVT_FS_fixed     1110 1111 1 . ...... ... 0 11 . 1 01 . 1 ... 0 @vcvt
 VCVT_FU_fixed     1111 1111 1 . ...... ... 0 11 . 1 01 . 1 ... 0 @vcvt
+
+# VCVT between floating point and integer (halfprec and single);
+# VCVT_<from><to>, S = signed int, U = unsigned int, F = float
+VCVT_SF           1111 1111 1 . 11 .. 11 ... 0 011 00 1 . 0 ... 0 @1op
+VCVT_UF           1111 1111 1 . 11 .. 11 ... 0 011 01 1 . 0 ... 0 @1op
+VCVT_FS           1111 1111 1 . 11 .. 11 ... 0 011 10 1 . 0 ... 0 @1op
+VCVT_FU           1111 1111 1 . 11 .. 11 ... 0 011 11 1 . 0 ... 0 @1op
diff --git a/target/arm/translate-mve.c b/target/arm/translate-mve.c
index 9269dbc3324..351033af1ec 100644
--- a/target/arm/translate-mve.c
+++ b/target/arm/translate-mve.c
@@ -543,6 +543,38 @@ DO_1OP(VQNEG, vqneg)
 DO_1OP(VMAXA, vmaxa)
 DO_1OP(VMINA, vmina)
 
+/*
+ * For simple float/int conversions we use the fixed-point
+ * conversion helpers with a zero shift count
+ */
+#define DO_VCVT(INSN, HFN, SFN)                                         \
+    static void gen_##INSN##h(TCGv_ptr env, TCGv_ptr qd, TCGv_ptr qm)   \
+    {                                                                   \
+        gen_helper_mve_##HFN(env, qd, qm, tcg_constant_i32(0));         \
+    }                                                                   \
+    static void gen_##INSN##s(TCGv_ptr env, TCGv_ptr qd, TCGv_ptr qm)   \
+    {                                                                   \
+        gen_helper_mve_##SFN(env, qd, qm, tcg_constant_i32(0));         \
+    }                                                                   \
+    static bool trans_##INSN(DisasContext *s, arg_1op *a)               \
+    {                                                                   \
+        static MVEGenOneOpFn * const fns[] = {                          \
+            NULL,                                                       \
+            gen_##INSN##h,                                              \
+            gen_##INSN##s,                                              \
+            NULL,                                                       \
+        };                                                              \
+        if (!dc_isar_feature(aa32_mve_fp, s)) {                         \
+            return false;                                               \
+        }                                                               \
+        return do_1op(s, a, fns[a->size]);                              \
+    }
+
+DO_VCVT(VCVT_SF, vcvt_sh, vcvt_sf)
+DO_VCVT(VCVT_UF, vcvt_uh, vcvt_uf)
+DO_VCVT(VCVT_FS, vcvt_hs, vcvt_fs)
+DO_VCVT(VCVT_FU, vcvt_hu, vcvt_fu)
+
 /* Narrowing moves: only size 0 and 1 are valid */
 #define DO_VMOVN(INSN, FN) \
     static bool trans_##INSN(DisasContext *s, arg_1op *a)       \
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 20/51] target/arm: Implement MVE VCVT with specified rounding mode
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (18 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 19/51] target/arm: Implement MVE VCVT between fp and integer Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 21/51] target/arm: Implement MVE VCVT between single and half precision Peter Maydell
                   ` (31 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

Implement the MVE VCVT which converts from floating-point to integer
using a rounding mode specified by the instruction.  We implement
this similarly to the Neon equivalents, by passing the required
rounding mode as an extra integer parameter to the helper functions.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/arm/helper-mve.h    |  5 ++++
 target/arm/mve.decode      | 10 ++++++++
 target/arm/mve_helper.c    | 38 ++++++++++++++++++++++++++++
 target/arm/translate-mve.c | 52 ++++++++++++++++++++++++++++++++++++++
 4 files changed, 105 insertions(+)

diff --git a/target/arm/helper-mve.h b/target/arm/helper-mve.h
index f3c2b43bf43..6d4052a5269 100644
--- a/target/arm/helper-mve.h
+++ b/target/arm/helper-mve.h
@@ -177,6 +177,11 @@ DEF_HELPER_FLAGS_3(mve_vminab, TCG_CALL_NO_WG, void, env, ptr, ptr)
 DEF_HELPER_FLAGS_3(mve_vminah, TCG_CALL_NO_WG, void, env, ptr, ptr)
 DEF_HELPER_FLAGS_3(mve_vminaw, TCG_CALL_NO_WG, void, env, ptr, ptr)
 
+DEF_HELPER_FLAGS_4(mve_vcvt_rm_sh, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(mve_vcvt_rm_uh, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(mve_vcvt_rm_ss, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(mve_vcvt_rm_us, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
+
 DEF_HELPER_FLAGS_3(mve_vmovnbb, TCG_CALL_NO_WG, void, env, ptr, ptr)
 DEF_HELPER_FLAGS_3(mve_vmovnbh, TCG_CALL_NO_WG, void, env, ptr, ptr)
 DEF_HELPER_FLAGS_3(mve_vmovntb, TCG_CALL_NO_WG, void, env, ptr, ptr)
diff --git a/target/arm/mve.decode b/target/arm/mve.decode
index 89b8c6fc8e6..55e8ce304e5 100644
--- a/target/arm/mve.decode
+++ b/target/arm/mve.decode
@@ -805,3 +805,13 @@ VCVT_SF           1111 1111 1 . 11 .. 11 ... 0 011 00 1 . 0 ... 0 @1op
 VCVT_UF           1111 1111 1 . 11 .. 11 ... 0 011 01 1 . 0 ... 0 @1op
 VCVT_FS           1111 1111 1 . 11 .. 11 ... 0 011 10 1 . 0 ... 0 @1op
 VCVT_FU           1111 1111 1 . 11 .. 11 ... 0 011 11 1 . 0 ... 0 @1op
+
+# VCVT from floating point to integer with specified rounding mode
+VCVTAS            1111 1111 1 . 11 .. 11 ... 000 00 0 1 . 0 ... 0 @1op
+VCVTAU            1111 1111 1 . 11 .. 11 ... 000 00 1 1 . 0 ... 0 @1op
+VCVTNS            1111 1111 1 . 11 .. 11 ... 000 01 0 1 . 0 ... 0 @1op
+VCVTNU            1111 1111 1 . 11 .. 11 ... 000 01 1 1 . 0 ... 0 @1op
+VCVTPS            1111 1111 1 . 11 .. 11 ... 000 10 0 1 . 0 ... 0 @1op
+VCVTPU            1111 1111 1 . 11 .. 11 ... 000 10 1 1 . 0 ... 0 @1op
+VCVTMS            1111 1111 1 . 11 .. 11 ... 000 11 0 1 . 0 ... 0 @1op
+VCVTMU            1111 1111 1 . 11 .. 11 ... 000 11 1 1 . 0 ... 0 @1op
diff --git a/target/arm/mve_helper.c b/target/arm/mve_helper.c
index d829ffe12d6..a793199fbee 100644
--- a/target/arm/mve_helper.c
+++ b/target/arm/mve_helper.c
@@ -3294,3 +3294,41 @@ DO_VCVT_FIXED(vcvt_sf, 4, int32_t, helper_vfp_sltos)
 DO_VCVT_FIXED(vcvt_uf, 4, uint32_t, helper_vfp_ultos)
 DO_VCVT_FIXED(vcvt_fs, 4, int32_t, helper_vfp_tosls_round_to_zero)
 DO_VCVT_FIXED(vcvt_fu, 4, uint32_t, helper_vfp_touls_round_to_zero)
+
+/* VCVT with specified rmode */
+#define DO_VCVT_RMODE(OP, ESIZE, TYPE, FN)                              \
+    void HELPER(glue(mve_, OP))(CPUARMState *env,                       \
+                                void *vd, void *vm, uint32_t rmode)     \
+    {                                                                   \
+        TYPE *d = vd, *m = vm;                                          \
+        TYPE r;                                                         \
+        uint16_t mask = mve_element_mask(env);                          \
+        unsigned e;                                                     \
+        float_status *fpst;                                             \
+        float_status scratch_fpst;                                      \
+        float_status *base_fpst = (ESIZE == 2) ?                        \
+            &env->vfp.standard_fp_status_f16 :                          \
+            &env->vfp.standard_fp_status;                               \
+        uint32_t prev_rmode = get_float_rounding_mode(base_fpst);       \
+        set_float_rounding_mode(rmode, base_fpst);                      \
+        for (e = 0; e < 16 / ESIZE; e++, mask >>= ESIZE) {              \
+            if ((mask & MAKE_64BIT_MASK(0, ESIZE)) == 0) {              \
+                continue;                                               \
+            }                                                           \
+            fpst = base_fpst;                                           \
+            if (!(mask & 1)) {                                          \
+                /* We need the result but without updating flags */     \
+                scratch_fpst = *fpst;                                   \
+                fpst = &scratch_fpst;                                   \
+            }                                                           \
+            r = FN(m[H##ESIZE(e)], 0, fpst);                            \
+            mergemask(&d[H##ESIZE(e)], r, mask);                        \
+        }                                                               \
+        set_float_rounding_mode(prev_rmode, base_fpst);                 \
+        mve_advance_vpt(env);                                           \
+    }
+
+DO_VCVT_RMODE(vcvt_rm_sh, 2, uint16_t, helper_vfp_toshh)
+DO_VCVT_RMODE(vcvt_rm_uh, 2, uint16_t, helper_vfp_touhh)
+DO_VCVT_RMODE(vcvt_rm_ss, 4, uint32_t, helper_vfp_tosls)
+DO_VCVT_RMODE(vcvt_rm_us, 4, uint32_t, helper_vfp_touls)
diff --git a/target/arm/translate-mve.c b/target/arm/translate-mve.c
index 351033af1ec..e80a55eb62e 100644
--- a/target/arm/translate-mve.c
+++ b/target/arm/translate-mve.c
@@ -49,6 +49,7 @@ typedef void MVEGenCmpFn(TCGv_ptr, TCGv_ptr, TCGv_ptr);
 typedef void MVEGenScalarCmpFn(TCGv_ptr, TCGv_ptr, TCGv_i32);
 typedef void MVEGenVABAVFn(TCGv_i32, TCGv_ptr, TCGv_ptr, TCGv_ptr, TCGv_i32);
 typedef void MVEGenDualAccOpFn(TCGv_i32, TCGv_ptr, TCGv_ptr, TCGv_ptr, TCGv_i32);
+typedef void MVEGenVCVTRmodeFn(TCGv_ptr, TCGv_ptr, TCGv_ptr, TCGv_i32);
 
 /* Return the offset of a Qn register (same semantics as aa32_vfp_qreg()) */
 static inline long mve_qreg_offset(unsigned reg)
@@ -575,6 +576,57 @@ DO_VCVT(VCVT_UF, vcvt_uh, vcvt_uf)
 DO_VCVT(VCVT_FS, vcvt_hs, vcvt_fs)
 DO_VCVT(VCVT_FU, vcvt_hu, vcvt_fu)
 
+static bool do_vcvt_rmode(DisasContext *s, arg_1op *a,
+                          enum arm_fprounding rmode, bool u)
+{
+    /*
+     * Handle VCVT fp to int with specified rounding mode.
+     * This is a 1op fn but we must pass the rounding mode as
+     * an immediate to the helper.
+     */
+    TCGv_ptr qd, qm;
+    static MVEGenVCVTRmodeFn * const fns[4][2] = {
+        { NULL, NULL },
+        { gen_helper_mve_vcvt_rm_sh, gen_helper_mve_vcvt_rm_uh },
+        { gen_helper_mve_vcvt_rm_ss, gen_helper_mve_vcvt_rm_us },
+        { NULL, NULL },
+    };
+    MVEGenVCVTRmodeFn *fn = fns[a->size][u];
+
+    if (!dc_isar_feature(aa32_mve_fp, s) ||
+        !mve_check_qreg_bank(s, a->qd | a->qm) ||
+        !fn) {
+        return false;
+    }
+
+    if (!mve_eci_check(s) || !vfp_access_check(s)) {
+        return true;
+    }
+
+    qd = mve_qreg_ptr(a->qd);
+    qm = mve_qreg_ptr(a->qm);
+    fn(cpu_env, qd, qm, tcg_constant_i32(arm_rmode_to_sf(rmode)));
+    tcg_temp_free_ptr(qd);
+    tcg_temp_free_ptr(qm);
+    mve_update_eci(s);
+    return true;
+}
+
+#define DO_VCVT_RMODE(INSN, RMODE, U)                           \
+    static bool trans_##INSN(DisasContext *s, arg_1op *a)       \
+    {                                                           \
+        return do_vcvt_rmode(s, a, RMODE, U);                   \
+    }                                                           \
+
+DO_VCVT_RMODE(VCVTAS, FPROUNDING_TIEAWAY, false)
+DO_VCVT_RMODE(VCVTAU, FPROUNDING_TIEAWAY, true)
+DO_VCVT_RMODE(VCVTNS, FPROUNDING_TIEEVEN, false)
+DO_VCVT_RMODE(VCVTNU, FPROUNDING_TIEEVEN, true)
+DO_VCVT_RMODE(VCVTPS, FPROUNDING_POSINF, false)
+DO_VCVT_RMODE(VCVTPU, FPROUNDING_POSINF, true)
+DO_VCVT_RMODE(VCVTMS, FPROUNDING_NEGINF, false)
+DO_VCVT_RMODE(VCVTMU, FPROUNDING_NEGINF, true)
+
 /* Narrowing moves: only size 0 and 1 are valid */
 #define DO_VMOVN(INSN, FN) \
     static bool trans_##INSN(DisasContext *s, arg_1op *a)       \
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 21/51] target/arm: Implement MVE VCVT between single and half precision
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (19 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 20/51] target/arm: Implement MVE VCVT with specified rounding mode Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 22/51] target/arm: Implement MVE VRINT insns Peter Maydell
                   ` (30 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

Implement the MVE VCVT instruction which converts between single
and half precision floating point.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/arm/helper-mve.h    |  5 +++
 target/arm/mve.decode      |  8 ++++
 target/arm/mve_helper.c    | 81 ++++++++++++++++++++++++++++++++++++++
 target/arm/translate-mve.c | 14 +++++++
 4 files changed, 108 insertions(+)

diff --git a/target/arm/helper-mve.h b/target/arm/helper-mve.h
index 6d4052a5269..f6345c7abbe 100644
--- a/target/arm/helper-mve.h
+++ b/target/arm/helper-mve.h
@@ -182,6 +182,11 @@ DEF_HELPER_FLAGS_4(mve_vcvt_rm_uh, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
 DEF_HELPER_FLAGS_4(mve_vcvt_rm_ss, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
 DEF_HELPER_FLAGS_4(mve_vcvt_rm_us, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
 
+DEF_HELPER_FLAGS_3(mve_vcvtb_sh, TCG_CALL_NO_WG, void, env, ptr, ptr)
+DEF_HELPER_FLAGS_3(mve_vcvtt_sh, TCG_CALL_NO_WG, void, env, ptr, ptr)
+DEF_HELPER_FLAGS_3(mve_vcvtb_hs, TCG_CALL_NO_WG, void, env, ptr, ptr)
+DEF_HELPER_FLAGS_3(mve_vcvtt_hs, TCG_CALL_NO_WG, void, env, ptr, ptr)
+
 DEF_HELPER_FLAGS_3(mve_vmovnbb, TCG_CALL_NO_WG, void, env, ptr, ptr)
 DEF_HELPER_FLAGS_3(mve_vmovnbh, TCG_CALL_NO_WG, void, env, ptr, ptr)
 DEF_HELPER_FLAGS_3(mve_vmovntb, TCG_CALL_NO_WG, void, env, ptr, ptr)
diff --git a/target/arm/mve.decode b/target/arm/mve.decode
index 55e8ce304e5..10f0f1de7b1 100644
--- a/target/arm/mve.decode
+++ b/target/arm/mve.decode
@@ -221,6 +221,8 @@ VMUL             1110 1111 0 . .. ... 0 ... 0 1001 . 1 . 1 ... 0 @2op
 # The VSHLL T2 encoding is not a @2op pattern, but is here because it
 # overlaps what would be size=0b11 VMULH/VRMULH
 {
+  VCVTB_SH       111 0 1110 0 . 11 1111 ... 0 1110 0 0 . 0 ... 1 @1op_nosz
+
   VMAXNMA        111 0 1110 0 . 11 1111 ... 0 1110 1 0 . 0 ... 1 @vmaxnma size=2
 
   VSHLL_BS       111 0 1110 0 . 11 .. 01 ... 0 1110 0 0 . 0 ... 1 @2_shll_esize_b
@@ -235,6 +237,8 @@ VMUL             1110 1111 0 . .. ... 0 ... 0 1001 . 1 . 1 ... 0 @2op
 }
 
 {
+  VCVTB_HS       111 1 1110 0 . 11  1111 ... 0 1110 0 0 . 0 ... 1  @1op_nosz
+
   VMAXNMA        111 1 1110 0 . 11  1111 ... 0 1110 1 0 . 0 ... 1 @vmaxnma size=1
 
   VSHLL_BU       111 1 1110 0 . 11 .. 01 ... 0 1110 0 0 . 0 ... 1 @2_shll_esize_b
@@ -247,6 +251,8 @@ VMUL             1110 1111 0 . .. ... 0 ... 0 1001 . 1 . 1 ... 0 @2op
 }
 
 {
+  VCVTT_SH       111 0 1110 0 . 11  1111 ... 1 1110 0 0 . 0 ... 1 @1op_nosz
+
   VMINNMA        111 0 1110 0 . 11  1111 ... 1 1110 1 0 . 0 ... 1 @vmaxnma size=2
   VSHLL_TS       111 0 1110 0 . 11 .. 01 ... 1 1110 0 0 . 0 ... 1 @2_shll_esize_b
   VSHLL_TS       111 0 1110 0 . 11 .. 01 ... 1 1110 0 0 . 0 ... 1 @2_shll_esize_h
@@ -260,6 +266,8 @@ VMUL             1110 1111 0 . .. ... 0 ... 0 1001 . 1 . 1 ... 0 @2op
 }
 
 {
+  VCVTT_HS       111 1 1110 0 . 11  1111 ... 1 1110 0 0 . 0 ... 1 @1op_nosz
+
   VMINNMA        111 1 1110 0 . 11  1111 ... 1 1110 1 0 . 0 ... 1 @vmaxnma size=1
   VSHLL_TU       111 1 1110 0 . 11 .. 01 ... 1 1110 0 0 . 0 ... 1 @2_shll_esize_b
   VSHLL_TU       111 1 1110 0 . 11 .. 01 ... 1 1110 0 0 . 0 ... 1 @2_shll_esize_h
diff --git a/target/arm/mve_helper.c b/target/arm/mve_helper.c
index a793199fbee..1ed76ac5ed8 100644
--- a/target/arm/mve_helper.c
+++ b/target/arm/mve_helper.c
@@ -3332,3 +3332,84 @@ DO_VCVT_RMODE(vcvt_rm_sh, 2, uint16_t, helper_vfp_toshh)
 DO_VCVT_RMODE(vcvt_rm_uh, 2, uint16_t, helper_vfp_touhh)
 DO_VCVT_RMODE(vcvt_rm_ss, 4, uint32_t, helper_vfp_tosls)
 DO_VCVT_RMODE(vcvt_rm_us, 4, uint32_t, helper_vfp_touls)
+
+/*
+ * VCVT between halfprec and singleprec. As usual for halfprec
+ * conversions, FZ16 is ignored and AHP is observed.
+ */
+static void do_vcvt_sh(CPUARMState *env, void *vd, void *vm, int top)
+{
+    uint16_t *d = vd;
+    uint32_t *m = vm;
+    uint16_t r;
+    uint16_t mask = mve_element_mask(env);
+    bool ieee = !(env->vfp.xregs[ARM_VFP_FPSCR] & FPCR_AHP);
+    unsigned e;
+    float_status *fpst;
+    float_status scratch_fpst;
+    float_status *base_fpst = &env->vfp.standard_fp_status;
+    bool old_fz = get_flush_to_zero(base_fpst);
+    set_flush_to_zero(false, base_fpst);
+    for (e = 0; e < 16 / 4; e++, mask >>= 4) {
+        if ((mask & MAKE_64BIT_MASK(0, 4)) == 0) {
+            continue;
+        }
+        fpst = base_fpst;
+        if (!(mask & 1)) {
+            /* We need the result but without updating flags */
+            scratch_fpst = *fpst;
+            fpst = &scratch_fpst;
+        }
+        r = float32_to_float16(m[H4(e)], ieee, fpst);
+        mergemask(&d[H2(e * 2 + top)], r, mask >> (top * 2));
+    }
+    set_flush_to_zero(old_fz, base_fpst);
+    mve_advance_vpt(env);
+}
+
+static void do_vcvt_hs(CPUARMState *env, void *vd, void *vm, int top)
+{
+    uint32_t *d = vd;
+    uint16_t *m = vm;
+    uint32_t r;
+    uint16_t mask = mve_element_mask(env);
+    bool ieee = !(env->vfp.xregs[ARM_VFP_FPSCR] & FPCR_AHP);
+    unsigned e;
+    float_status *fpst;
+    float_status scratch_fpst;
+    float_status *base_fpst = &env->vfp.standard_fp_status;
+    bool old_fiz = get_flush_inputs_to_zero(base_fpst);
+    set_flush_inputs_to_zero(false, base_fpst);
+    for (e = 0; e < 16 / 4; e++, mask >>= 4) {
+        if ((mask & MAKE_64BIT_MASK(0, 4)) == 0) {
+            continue;
+        }
+        fpst = base_fpst;
+        if (!(mask & (1 << (top * 2)))) {
+            /* We need the result but without updating flags */
+            scratch_fpst = *fpst;
+            fpst = &scratch_fpst;
+        }
+        r = float16_to_float32(m[H2(e * 2 + top)], ieee, fpst);
+        mergemask(&d[H4(e)], r, mask);
+    }
+    set_flush_inputs_to_zero(old_fiz, base_fpst);
+    mve_advance_vpt(env);
+}
+
+void HELPER(mve_vcvtb_sh)(CPUARMState *env, void *vd, void *vm)
+{
+    do_vcvt_sh(env, vd, vm, 0);
+}
+void HELPER(mve_vcvtt_sh)(CPUARMState *env, void *vd, void *vm)
+{
+    do_vcvt_sh(env, vd, vm, 1);
+}
+void HELPER(mve_vcvtb_hs)(CPUARMState *env, void *vd, void *vm)
+{
+    do_vcvt_hs(env, vd, vm, 0);
+}
+void HELPER(mve_vcvtt_hs)(CPUARMState *env, void *vd, void *vm)
+{
+    do_vcvt_hs(env, vd, vm, 1);
+}
diff --git a/target/arm/translate-mve.c b/target/arm/translate-mve.c
index e80a55eb62e..194ef99cc74 100644
--- a/target/arm/translate-mve.c
+++ b/target/arm/translate-mve.c
@@ -627,6 +627,20 @@ DO_VCVT_RMODE(VCVTPU, FPROUNDING_POSINF, true)
 DO_VCVT_RMODE(VCVTMS, FPROUNDING_NEGINF, false)
 DO_VCVT_RMODE(VCVTMU, FPROUNDING_NEGINF, true)
 
+#define DO_VCVT_SH(INSN, FN)                                    \
+    static bool trans_##INSN(DisasContext *s, arg_1op *a)       \
+    {                                                           \
+        if (!dc_isar_feature(aa32_mve_fp, s)) {                 \
+            return false;                                       \
+        }                                                       \
+        return do_1op(s, a, gen_helper_mve_##FN);               \
+    }                                                           \
+
+DO_VCVT_SH(VCVTB_SH, vcvtb_sh)
+DO_VCVT_SH(VCVTT_SH, vcvtt_sh)
+DO_VCVT_SH(VCVTB_HS, vcvtb_hs)
+DO_VCVT_SH(VCVTT_HS, vcvtt_hs)
+
 /* Narrowing moves: only size 0 and 1 are valid */
 #define DO_VMOVN(INSN, FN) \
     static bool trans_##INSN(DisasContext *s, arg_1op *a)       \
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 22/51] target/arm: Implement MVE VRINT insns
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (20 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 21/51] target/arm: Implement MVE VCVT between single and half precision Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 23/51] target/arm: Enable MVE in Cortex-M55 Peter Maydell
                   ` (29 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

Implement the MVE VRINT insns, which round floating point inputs
to integer values, leaving them in floating point format.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/arm/helper-mve.h    |  6 +++++
 target/arm/mve.decode      |  7 ++++++
 target/arm/mve_helper.c    | 35 +++++++++++++++++++++++++++++
 target/arm/translate-mve.c | 45 ++++++++++++++++++++++++++++++++++++++
 4 files changed, 93 insertions(+)

diff --git a/target/arm/helper-mve.h b/target/arm/helper-mve.h
index f6345c7abbe..76bd25006d8 100644
--- a/target/arm/helper-mve.h
+++ b/target/arm/helper-mve.h
@@ -882,3 +882,9 @@ DEF_HELPER_FLAGS_4(mve_vcvt_sf, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
 DEF_HELPER_FLAGS_4(mve_vcvt_uf, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
 DEF_HELPER_FLAGS_4(mve_vcvt_fs, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
 DEF_HELPER_FLAGS_4(mve_vcvt_fu, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
+
+DEF_HELPER_FLAGS_4(mve_vrint_rm_h, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(mve_vrint_rm_s, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
+
+DEF_HELPER_FLAGS_3(mve_vrintx_h, TCG_CALL_NO_WG, void, env, ptr, ptr)
+DEF_HELPER_FLAGS_3(mve_vrintx_s, TCG_CALL_NO_WG, void, env, ptr, ptr)
diff --git a/target/arm/mve.decode b/target/arm/mve.decode
index 10f0f1de7b1..14a4f398020 100644
--- a/target/arm/mve.decode
+++ b/target/arm/mve.decode
@@ -823,3 +823,10 @@ VCVTPS            1111 1111 1 . 11 .. 11 ... 000 10 0 1 . 0 ... 0 @1op
 VCVTPU            1111 1111 1 . 11 .. 11 ... 000 10 1 1 . 0 ... 0 @1op
 VCVTMS            1111 1111 1 . 11 .. 11 ... 000 11 0 1 . 0 ... 0 @1op
 VCVTMU            1111 1111 1 . 11 .. 11 ... 000 11 1 1 . 0 ... 0 @1op
+
+VRINTN            1111 1111 1 . 11 .. 10 ... 001 000 1 . 0 ... 0 @1op
+VRINTX            1111 1111 1 . 11 .. 10 ... 001 001 1 . 0 ... 0 @1op
+VRINTA            1111 1111 1 . 11 .. 10 ... 001 010 1 . 0 ... 0 @1op
+VRINTZ            1111 1111 1 . 11 .. 10 ... 001 011 1 . 0 ... 0 @1op
+VRINTM            1111 1111 1 . 11 .. 10 ... 001 101 1 . 0 ... 0 @1op
+VRINTP            1111 1111 1 . 11 .. 10 ... 001 111 1 . 0 ... 0 @1op
diff --git a/target/arm/mve_helper.c b/target/arm/mve_helper.c
index 1ed76ac5ed8..846962bf4c5 100644
--- a/target/arm/mve_helper.c
+++ b/target/arm/mve_helper.c
@@ -3333,6 +3333,12 @@ DO_VCVT_RMODE(vcvt_rm_uh, 2, uint16_t, helper_vfp_touhh)
 DO_VCVT_RMODE(vcvt_rm_ss, 4, uint32_t, helper_vfp_tosls)
 DO_VCVT_RMODE(vcvt_rm_us, 4, uint32_t, helper_vfp_touls)
 
+#define DO_VRINT_RM_H(M, F, S) helper_rinth(M, S)
+#define DO_VRINT_RM_S(M, F, S) helper_rints(M, S)
+
+DO_VCVT_RMODE(vrint_rm_h, 2, uint16_t, DO_VRINT_RM_H)
+DO_VCVT_RMODE(vrint_rm_s, 4, uint32_t, DO_VRINT_RM_S)
+
 /*
  * VCVT between halfprec and singleprec. As usual for halfprec
  * conversions, FZ16 is ignored and AHP is observed.
@@ -3413,3 +3419,32 @@ void HELPER(mve_vcvtt_hs)(CPUARMState *env, void *vd, void *vm)
 {
     do_vcvt_hs(env, vd, vm, 1);
 }
+
+#define DO_1OP_FP(OP, ESIZE, TYPE, FN)                                  \
+    void HELPER(glue(mve_, OP))(CPUARMState *env, void *vd, void *vm)   \
+    {                                                                   \
+        TYPE *d = vd, *m = vm;                                          \
+        TYPE r;                                                         \
+        uint16_t mask = mve_element_mask(env);                          \
+        unsigned e;                                                     \
+        float_status *fpst;                                             \
+        float_status scratch_fpst;                                      \
+        for (e = 0; e < 16 / ESIZE; e++, mask >>= ESIZE) {              \
+            if ((mask & MAKE_64BIT_MASK(0, ESIZE)) == 0) {              \
+                continue;                                               \
+            }                                                           \
+            fpst = (ESIZE == 2) ? &env->vfp.standard_fp_status_f16 :    \
+                &env->vfp.standard_fp_status;                           \
+            if (!(mask & 1)) {                                          \
+                /* We need the result but without updating flags */     \
+                scratch_fpst = *fpst;                                   \
+                fpst = &scratch_fpst;                                   \
+            }                                                           \
+            r = FN(m[H##ESIZE(e)], fpst);                               \
+            mergemask(&d[H##ESIZE(e)], r, mask);                        \
+        }                                                               \
+        mve_advance_vpt(env);                                           \
+    }
+
+DO_1OP_FP(vrintx_h, 2, float16, float16_round_to_int)
+DO_1OP_FP(vrintx_s, 4, float32, float32_round_to_int)
diff --git a/target/arm/translate-mve.c b/target/arm/translate-mve.c
index 194ef99cc74..2ed91577ec8 100644
--- a/target/arm/translate-mve.c
+++ b/target/arm/translate-mve.c
@@ -641,6 +641,51 @@ DO_VCVT_SH(VCVTT_SH, vcvtt_sh)
 DO_VCVT_SH(VCVTB_HS, vcvtb_hs)
 DO_VCVT_SH(VCVTT_HS, vcvtt_hs)
 
+#define DO_VRINT(INSN, RMODE)                                           \
+    static void gen_##INSN##h(TCGv_ptr env, TCGv_ptr qd, TCGv_ptr qm)   \
+    {                                                                   \
+        gen_helper_mve_vrint_rm_h(env, qd, qm,                          \
+                                  tcg_constant_i32(arm_rmode_to_sf(RMODE))); \
+    }                                                                   \
+    static void gen_##INSN##s(TCGv_ptr env, TCGv_ptr qd, TCGv_ptr qm)   \
+    {                                                                   \
+        gen_helper_mve_vrint_rm_s(env, qd, qm,                          \
+                                  tcg_constant_i32(arm_rmode_to_sf(RMODE))); \
+    }                                                                   \
+    static bool trans_##INSN(DisasContext *s, arg_1op *a)               \
+    {                                                                   \
+        static MVEGenOneOpFn * const fns[] = {                          \
+            NULL,                                                       \
+            gen_##INSN##h,                                              \
+            gen_##INSN##s,                                              \
+            NULL,                                                       \
+        };                                                              \
+        if (!dc_isar_feature(aa32_mve_fp, s)) {                         \
+            return false;                                               \
+        }                                                               \
+        return do_1op(s, a, fns[a->size]);                              \
+    }
+
+DO_VRINT(VRINTN, FPROUNDING_TIEEVEN)
+DO_VRINT(VRINTA, FPROUNDING_TIEAWAY)
+DO_VRINT(VRINTZ, FPROUNDING_ZERO)
+DO_VRINT(VRINTM, FPROUNDING_NEGINF)
+DO_VRINT(VRINTP, FPROUNDING_POSINF)
+
+static bool trans_VRINTX(DisasContext *s, arg_1op *a)
+{
+    static MVEGenOneOpFn * const fns[] = {
+        NULL,
+        gen_helper_mve_vrintx_h,
+        gen_helper_mve_vrintx_s,
+        NULL,
+    };
+    if (!dc_isar_feature(aa32_mve_fp, s)) {
+        return false;
+    }
+    return do_1op(s, a, fns[a->size]);
+}
+
 /* Narrowing moves: only size 0 and 1 are valid */
 #define DO_VMOVN(INSN, FN) \
     static bool trans_##INSN(DisasContext *s, arg_1op *a)       \
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 23/51] target/arm: Enable MVE in Cortex-M55
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (21 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 22/51] target/arm: Implement MVE VRINT insns Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 24/51] target-arm: Add support for Fujitsu A64FX Peter Maydell
                   ` (28 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

We now have a complete MVE emulation, so we can enable it in our
Cortex-M55 model by setting the ID registers to match those of a
Cortex-M55 with full MVE support.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/arm/cpu_tcg.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/target/arm/cpu_tcg.c b/target/arm/cpu_tcg.c
index ed444bf436a..33cc75af57d 100644
--- a/target/arm/cpu_tcg.c
+++ b/target/arm/cpu_tcg.c
@@ -654,12 +654,9 @@ static void cortex_m55_initfn(Object *obj)
     cpu->revidr = 0;
     cpu->pmsav7_dregion = 16;
     cpu->sau_sregion = 8;
-    /*
-     * These are the MVFR* values for the FPU, no MVE configuration;
-     * we will update them later when we implement MVE
-     */
+    /* These are the MVFR* values for the FPU + full MVE configuration */
     cpu->isar.mvfr0 = 0x10110221;
-    cpu->isar.mvfr1 = 0x12100011;
+    cpu->isar.mvfr1 = 0x12100211;
     cpu->isar.mvfr2 = 0x00000040;
     cpu->isar.id_pfr0 = 0x20000030;
     cpu->isar.id_pfr1 = 0x00000230;
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 24/51] target-arm: Add support for Fujitsu A64FX
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (22 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 23/51] target/arm: Enable MVE in Cortex-M55 Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 25/51] hw/arm/virt: target-arm: Add A64FX processor support to virt machine Peter Maydell
                   ` (27 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

From: Shuuichirou Ishii <ishii.shuuichir@fujitsu.com>

Add a definition for the Fujitsu A64FX processor.

The A64FX processor does not implement the AArch32 Execution state,
so there are no associated AArch32 Identification registers.

For SVE, the A64FX processor supports only 128,256 and 512bit vector
lengths.

The Identification register values are defined based on the FX700,
and have been tested and confirmed.

Signed-off-by: Shuuichirou Ishii <ishii.shuuichir@fujitsu.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/cpu64.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)

diff --git a/target/arm/cpu64.c b/target/arm/cpu64.c
index 2f0cbddab56..15245a60a8c 100644
--- a/target/arm/cpu64.c
+++ b/target/arm/cpu64.c
@@ -841,10 +841,58 @@ static void aarch64_max_initfn(Object *obj)
                         cpu_max_set_sve_max_vq, NULL, NULL);
 }
 
+static void aarch64_a64fx_initfn(Object *obj)
+{
+    ARMCPU *cpu = ARM_CPU(obj);
+
+    cpu->dtb_compatible = "arm,a64fx";
+    set_feature(&cpu->env, ARM_FEATURE_V8);
+    set_feature(&cpu->env, ARM_FEATURE_NEON);
+    set_feature(&cpu->env, ARM_FEATURE_GENERIC_TIMER);
+    set_feature(&cpu->env, ARM_FEATURE_AARCH64);
+    set_feature(&cpu->env, ARM_FEATURE_EL2);
+    set_feature(&cpu->env, ARM_FEATURE_EL3);
+    set_feature(&cpu->env, ARM_FEATURE_PMU);
+    cpu->midr = 0x461f0010;
+    cpu->revidr = 0x00000000;
+    cpu->ctr = 0x86668006;
+    cpu->reset_sctlr = 0x30000180;
+    cpu->isar.id_aa64pfr0 =   0x0000000101111111; /* No RAS Extensions */
+    cpu->isar.id_aa64pfr1 = 0x0000000000000000;
+    cpu->isar.id_aa64dfr0 = 0x0000000010305408;
+    cpu->isar.id_aa64dfr1 = 0x0000000000000000;
+    cpu->id_aa64afr0 = 0x0000000000000000;
+    cpu->id_aa64afr1 = 0x0000000000000000;
+    cpu->isar.id_aa64mmfr0 = 0x0000000000001122;
+    cpu->isar.id_aa64mmfr1 = 0x0000000011212100;
+    cpu->isar.id_aa64mmfr2 = 0x0000000000001011;
+    cpu->isar.id_aa64isar0 = 0x0000000010211120;
+    cpu->isar.id_aa64isar1 = 0x0000000000010001;
+    cpu->isar.id_aa64zfr0 = 0x0000000000000000;
+    cpu->clidr = 0x0000000080000023;
+    cpu->ccsidr[0] = 0x7007e01c; /* 64KB L1 dcache */
+    cpu->ccsidr[1] = 0x2007e01c; /* 64KB L1 icache */
+    cpu->ccsidr[2] = 0x70ffe07c; /* 8MB L2 cache */
+    cpu->dcz_blocksize = 6; /* 256 bytes */
+    cpu->gic_num_lrs = 4;
+    cpu->gic_vpribits = 5;
+    cpu->gic_vprebits = 5;
+
+    /* Suppport of A64FX's vector length are 128,256 and 512bit only */
+    aarch64_add_sve_properties(obj);
+    bitmap_zero(cpu->sve_vq_supported, ARM_MAX_VQ);
+    set_bit(0, cpu->sve_vq_supported); /* 128bit */
+    set_bit(1, cpu->sve_vq_supported); /* 256bit */
+    set_bit(3, cpu->sve_vq_supported); /* 512bit */
+
+    /* TODO:  Add A64FX specific HPC extension registers */
+}
+
 static const ARMCPUInfo aarch64_cpus[] = {
     { .name = "cortex-a57",         .initfn = aarch64_a57_initfn },
     { .name = "cortex-a53",         .initfn = aarch64_a53_initfn },
     { .name = "cortex-a72",         .initfn = aarch64_a72_initfn },
+    { .name = "a64fx",              .initfn = aarch64_a64fx_initfn },
     { .name = "max",                .initfn = aarch64_max_initfn },
 };
 
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 25/51] hw/arm/virt: target-arm: Add A64FX processor support to virt machine
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (23 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 24/51] target-arm: Add support for Fujitsu A64FX Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 26/51] tests/arm-cpu-features: Add A64FX processor related tests Peter Maydell
                   ` (26 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

From: Shuuichirou Ishii <ishii.shuuichir@fujitsu.com>

Add -cpu a64fx to use A64FX processor when -machine virt option is
specified.  In addition, add a64fx to the Supported guest CPU types
in the virt.rst document.

Signed-off-by: Shuuichirou Ishii <ishii.shuuichir@fujitsu.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 docs/system/arm/virt.rst | 1 +
 hw/arm/virt.c            | 1 +
 2 files changed, 2 insertions(+)

diff --git a/docs/system/arm/virt.rst b/docs/system/arm/virt.rst
index 59acf0eeafa..850787495be 100644
--- a/docs/system/arm/virt.rst
+++ b/docs/system/arm/virt.rst
@@ -55,6 +55,7 @@ Supported guest CPU types:
 - ``cortex-a53`` (64-bit)
 - ``cortex-a57`` (64-bit)
 - ``cortex-a72`` (64-bit)
+- ``a64fx`` (64-bit)
 - ``host`` (with KVM only)
 - ``max`` (same as ``host`` for KVM; best possible emulation with TCG)
 
diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index dbb77b59974..73e9c6bb7cb 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -200,6 +200,7 @@ static const char *valid_cpus[] = {
     ARM_CPU_TYPE_NAME("cortex-a53"),
     ARM_CPU_TYPE_NAME("cortex-a57"),
     ARM_CPU_TYPE_NAME("cortex-a72"),
+    ARM_CPU_TYPE_NAME("a64fx"),
     ARM_CPU_TYPE_NAME("host"),
     ARM_CPU_TYPE_NAME("max"),
 };
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 26/51] tests/arm-cpu-features: Add A64FX processor related tests
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (24 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 25/51] hw/arm/virt: target-arm: Add A64FX processor support to virt machine Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 27/51] arm: Move M-profile RAS register block into its own device Peter Maydell
                   ` (25 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

From: Shuuichirou Ishii <ishii.shuuichir@fujitsu.com>

Add tests that the A64FX CPU model exposes the expected features.

Signed-off-by: Shuuichirou Ishii <ishii.shuuichir@fujitsu.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
[PMM: added commit message body]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 tests/qtest/arm-cpu-features.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/tests/qtest/arm-cpu-features.c b/tests/qtest/arm-cpu-features.c
index 8252b85bb85..90a87f0ea9f 100644
--- a/tests/qtest/arm-cpu-features.c
+++ b/tests/qtest/arm-cpu-features.c
@@ -473,6 +473,19 @@ static void test_query_cpu_model_expansion(const void *data)
         assert_has_feature_enabled(qts, "cortex-a57", "pmu");
         assert_has_feature_enabled(qts, "cortex-a57", "aarch64");
 
+        assert_has_feature_enabled(qts, "a64fx", "pmu");
+        assert_has_feature_enabled(qts, "a64fx", "aarch64");
+        /*
+         * A64FX does not support any other vector lengths besides those
+         * that are enabled by default(128bit, 256bits, 512bit).
+         */
+        assert_has_feature_enabled(qts, "a64fx", "sve");
+        assert_sve_vls(qts, "a64fx", 0xb, NULL);
+        assert_error(qts, "a64fx", "cannot enable sve384",
+                     "{ 'sve384': true }");
+        assert_error(qts, "a64fx", "cannot enable sve640",
+                     "{ 'sve640': true }");
+
         sve_tests_default(qts, "max");
         pauth_tests_default(qts, "max");
 
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 27/51] arm: Move M-profile RAS register block into its own device
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (25 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 26/51] tests/arm-cpu-features: Add A64FX processor related tests Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 28/51] arm: Move systick device creation from NVIC to ARMv7M object Peter Maydell
                   ` (24 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

Currently we implement the RAS register block within the NVIC device.
It isn't really very tightly coupled with the NVIC proper, so instead
move it out into a sysbus device of its own and have the top level
ARMv7M container create it and map it into memory at the right
address.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alexandre Iooss <erdnaxe@crans.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Luc Michel <luc@lmichel.fr>
Reviewed-by: Damien Hedde <damien.hedde@greensocs.com>
Message-id: 20210812093356.1946-2-peter.maydell@linaro.org
---
 include/hw/arm/armv7m.h       |  2 +
 include/hw/intc/armv7m_nvic.h |  1 -
 include/hw/misc/armv7m_ras.h  | 37 ++++++++++++++
 hw/arm/armv7m.c               | 12 +++++
 hw/intc/armv7m_nvic.c         | 56 ---------------------
 hw/misc/armv7m_ras.c          | 93 +++++++++++++++++++++++++++++++++++
 MAINTAINERS                   |  2 +
 hw/misc/meson.build           |  2 +
 8 files changed, 148 insertions(+), 57 deletions(-)
 create mode 100644 include/hw/misc/armv7m_ras.h
 create mode 100644 hw/misc/armv7m_ras.c

diff --git a/include/hw/arm/armv7m.h b/include/hw/arm/armv7m.h
index bc6733c5184..4cae0d7eeaa 100644
--- a/include/hw/arm/armv7m.h
+++ b/include/hw/arm/armv7m.h
@@ -12,6 +12,7 @@
 
 #include "hw/sysbus.h"
 #include "hw/intc/armv7m_nvic.h"
+#include "hw/misc/armv7m_ras.h"
 #include "target/arm/idau.h"
 #include "qom/object.h"
 
@@ -58,6 +59,7 @@ struct ARMv7MState {
     NVICState nvic;
     BitBandState bitband[ARMV7M_NUM_BITBANDS];
     ARMCPU *cpu;
+    ARMv7MRAS ras;
 
     /* MemoryRegion we pass to the CPU, with our devices layered on
      * top of the ones the board provides in board_memory.
diff --git a/include/hw/intc/armv7m_nvic.h b/include/hw/intc/armv7m_nvic.h
index 39c71e15936..33b6d8810c7 100644
--- a/include/hw/intc/armv7m_nvic.h
+++ b/include/hw/intc/armv7m_nvic.h
@@ -83,7 +83,6 @@ struct NVICState {
     MemoryRegion sysreg_ns_mem;
     MemoryRegion systickmem;
     MemoryRegion systick_ns_mem;
-    MemoryRegion ras_mem;
     MemoryRegion container;
     MemoryRegion defaultmem;
 
diff --git a/include/hw/misc/armv7m_ras.h b/include/hw/misc/armv7m_ras.h
new file mode 100644
index 00000000000..ba6daccf3fc
--- /dev/null
+++ b/include/hw/misc/armv7m_ras.h
@@ -0,0 +1,37 @@
+/*
+ * Arm M-profile RAS (Reliability, Availability and Serviceability) block
+ *
+ * Copyright (c) 2021 Linaro Limited
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 or
+ *  (at your option) any later version.
+ */
+
+/*
+ * This is a model of the RAS register block of an M-profile CPU
+ * (the registers starting at 0xE0005000 with ERRFRn).
+ *
+ * QEMU interface:
+ *  + sysbus MMIO region 0: the register bank
+ *
+ * The QEMU implementation currently provides "minimal RAS" only.
+ */
+
+#ifndef HW_MISC_ARMV7M_RAS_H
+#define HW_MISC_ARMV7M_RAS_H
+
+#include "hw/sysbus.h"
+
+#define TYPE_ARMV7M_RAS "armv7m-ras"
+OBJECT_DECLARE_SIMPLE_TYPE(ARMv7MRAS, ARMV7M_RAS)
+
+struct ARMv7MRAS {
+    /*< private >*/
+    SysBusDevice parent_obj;
+
+    /*< public >*/
+    MemoryRegion iomem;
+};
+
+#endif
diff --git a/hw/arm/armv7m.c b/hw/arm/armv7m.c
index 9ce5c30cd5c..8964730d153 100644
--- a/hw/arm/armv7m.c
+++ b/hw/arm/armv7m.c
@@ -231,6 +231,18 @@ static void armv7m_realize(DeviceState *dev, Error **errp)
     memory_region_add_subregion(&s->container, 0xe0000000,
                                 sysbus_mmio_get_region(sbd, 0));
 
+    /* If the CPU has RAS support, create the RAS register block */
+    if (cpu_isar_feature(aa32_ras, s->cpu)) {
+        object_initialize_child(OBJECT(dev), "armv7m-ras",
+                                &s->ras, TYPE_ARMV7M_RAS);
+        sbd = SYS_BUS_DEVICE(&s->ras);
+        if (!sysbus_realize(sbd, errp)) {
+            return;
+        }
+        memory_region_add_subregion_overlap(&s->container, 0xe0005000,
+                                            sysbus_mmio_get_region(sbd, 0), 1);
+    }
+
     for (i = 0; i < ARRAY_SIZE(s->bitband); i++) {
         if (s->enable_bitband) {
             Object *obj = OBJECT(&s->bitband[i]);
diff --git a/hw/intc/armv7m_nvic.c b/hw/intc/armv7m_nvic.c
index 1e7ddcb94cb..a5975592dfa 100644
--- a/hw/intc/armv7m_nvic.c
+++ b/hw/intc/armv7m_nvic.c
@@ -2549,56 +2549,6 @@ static const MemoryRegionOps nvic_systick_ops = {
     .endianness = DEVICE_NATIVE_ENDIAN,
 };
 
-
-static MemTxResult ras_read(void *opaque, hwaddr addr,
-                            uint64_t *data, unsigned size,
-                            MemTxAttrs attrs)
-{
-    if (attrs.user) {
-        return MEMTX_ERROR;
-    }
-
-    switch (addr) {
-    case 0xe10: /* ERRIIDR */
-        /* architect field = Arm; product/variant/revision 0 */
-        *data = 0x43b;
-        break;
-    case 0xfc8: /* ERRDEVID */
-        /* Minimal RAS: we implement 0 error record indexes */
-        *data = 0;
-        break;
-    default:
-        qemu_log_mask(LOG_UNIMP, "Read RAS register offset 0x%x\n",
-                      (uint32_t)addr);
-        *data = 0;
-        break;
-    }
-    return MEMTX_OK;
-}
-
-static MemTxResult ras_write(void *opaque, hwaddr addr,
-                             uint64_t value, unsigned size,
-                             MemTxAttrs attrs)
-{
-    if (attrs.user) {
-        return MEMTX_ERROR;
-    }
-
-    switch (addr) {
-    default:
-        qemu_log_mask(LOG_UNIMP, "Write to RAS register offset 0x%x\n",
-                      (uint32_t)addr);
-        break;
-    }
-    return MEMTX_OK;
-}
-
-static const MemoryRegionOps ras_ops = {
-    .read_with_attrs = ras_read,
-    .write_with_attrs = ras_write,
-    .endianness = DEVICE_NATIVE_ENDIAN,
-};
-
 /*
  * Unassigned portions of the PPB space are RAZ/WI for privileged
  * accesses, and fault for non-privileged accesses.
@@ -2946,12 +2896,6 @@ static void armv7m_nvic_realize(DeviceState *dev, Error **errp)
                                             &s->systick_ns_mem, 1);
     }
 
-    if (cpu_isar_feature(aa32_ras, s->cpu)) {
-        memory_region_init_io(&s->ras_mem, OBJECT(s),
-                              &ras_ops, s, "nvic_ras", 0x1000);
-        memory_region_add_subregion(&s->container, 0x5000, &s->ras_mem);
-    }
-
     sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->container);
 }
 
diff --git a/hw/misc/armv7m_ras.c b/hw/misc/armv7m_ras.c
new file mode 100644
index 00000000000..de24922c944
--- /dev/null
+++ b/hw/misc/armv7m_ras.c
@@ -0,0 +1,93 @@
+/*
+ * Arm M-profile RAS (Reliability, Availability and Serviceability) block
+ *
+ * Copyright (c) 2021 Linaro Limited
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 or
+ *  (at your option) any later version.
+ */
+
+#include "qemu/osdep.h"
+#include "hw/misc/armv7m_ras.h"
+#include "qemu/log.h"
+
+static MemTxResult ras_read(void *opaque, hwaddr addr,
+                            uint64_t *data, unsigned size,
+                            MemTxAttrs attrs)
+{
+    if (attrs.user) {
+        return MEMTX_ERROR;
+    }
+
+    switch (addr) {
+    case 0xe10: /* ERRIIDR */
+        /* architect field = Arm; product/variant/revision 0 */
+        *data = 0x43b;
+        break;
+    case 0xfc8: /* ERRDEVID */
+        /* Minimal RAS: we implement 0 error record indexes */
+        *data = 0;
+        break;
+    default:
+        qemu_log_mask(LOG_UNIMP, "Read RAS register offset 0x%x\n",
+                      (uint32_t)addr);
+        *data = 0;
+        break;
+    }
+    return MEMTX_OK;
+}
+
+static MemTxResult ras_write(void *opaque, hwaddr addr,
+                             uint64_t value, unsigned size,
+                             MemTxAttrs attrs)
+{
+    if (attrs.user) {
+        return MEMTX_ERROR;
+    }
+
+    switch (addr) {
+    default:
+        qemu_log_mask(LOG_UNIMP, "Write to RAS register offset 0x%x\n",
+                      (uint32_t)addr);
+        break;
+    }
+    return MEMTX_OK;
+}
+
+static const MemoryRegionOps ras_ops = {
+    .read_with_attrs = ras_read,
+    .write_with_attrs = ras_write,
+    .endianness = DEVICE_NATIVE_ENDIAN,
+};
+
+
+static void armv7m_ras_init(Object *obj)
+{
+    SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
+    ARMv7MRAS *s = ARMV7M_RAS(obj);
+
+    memory_region_init_io(&s->iomem, obj, &ras_ops,
+                          s, "armv7m-ras", 0x1000);
+    sysbus_init_mmio(sbd, &s->iomem);
+}
+
+static void armv7m_ras_class_init(ObjectClass *klass, void *data)
+{
+    /* This device has no state: no need for vmstate or reset */
+}
+
+static const TypeInfo armv7m_ras_info = {
+    .name = TYPE_ARMV7M_RAS,
+    .parent = TYPE_SYS_BUS_DEVICE,
+    .instance_size = sizeof(ARMv7MRAS),
+    .instance_init = armv7m_ras_init,
+    .class_init = armv7m_ras_class_init,
+};
+
+static void armv7m_ras_register_types(void)
+{
+    type_register_static(&armv7m_ras_info);
+}
+
+type_init(armv7m_ras_register_types);
diff --git a/MAINTAINERS b/MAINTAINERS
index dffcb651f46..f9d843ce0ad 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -617,6 +617,7 @@ F: hw/intc/gic_internal.h
 F: hw/misc/a9scu.c
 F: hw/misc/arm11scu.c
 F: hw/misc/arm_l2x0.c
+F: hw/misc/armv7m_ras.c
 F: hw/timer/a9gtimer*
 F: hw/timer/arm*
 F: include/hw/arm/arm*.h
@@ -626,6 +627,7 @@ F: include/hw/misc/arm11scu.h
 F: include/hw/timer/a9gtimer.h
 F: include/hw/timer/arm_mptimer.h
 F: include/hw/timer/armv7m_systick.h
+F: include/hw/misc/armv7m_ras.h
 F: tests/qtest/test-arm-mptimer.c
 
 Exynos
diff --git a/hw/misc/meson.build b/hw/misc/meson.build
index a53b849a5a0..3f41a3a5b27 100644
--- a/hw/misc/meson.build
+++ b/hw/misc/meson.build
@@ -17,6 +17,8 @@ softmmu_ss.add(when: 'CONFIG_INTEGRATOR_DEBUG', if_true: files('arm_integrator_d
 softmmu_ss.add(when: 'CONFIG_A9SCU', if_true: files('a9scu.c'))
 softmmu_ss.add(when: 'CONFIG_ARM11SCU', if_true: files('arm11scu.c'))
 
+softmmu_ss.add(when: 'CONFIG_ARM_V7M', if_true: files('armv7m_ras.c'))
+
 # Mac devices
 softmmu_ss.add(when: 'CONFIG_MOS6522', if_true: files('mos6522.c'))
 
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 28/51] arm: Move systick device creation from NVIC to ARMv7M object
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (26 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 27/51] arm: Move M-profile RAS register block into its own device Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 29/51] arm: Move system PPB container handling to armv7m Peter Maydell
                   ` (23 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

There's no particular reason why the NVIC should be owning the
SysTick device objects; move them into the ARMv7M container object
instead, as part of consolidating the "create the devices which are
built into an M-profile CPU and map them into their architected
locations in the address space" work into one place.

This involves temporarily creating a duplicate copy of the
nvic_sysreg_ns_ops struct and its read/write functions (renamed as
v7m_sysreg_ns_*), but we will delete the NVIC's copy of this code in
a subsequent patch.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Luc Michel <luc@lmichel.fr>
Message-id: 20210812093356.1946-3-peter.maydell@linaro.org
---
 include/hw/arm/armv7m.h       |  12 ++++
 include/hw/intc/armv7m_nvic.h |   4 --
 hw/arm/armv7m.c               | 125 ++++++++++++++++++++++++++++++++++
 hw/intc/armv7m_nvic.c         |  73 --------------------
 4 files changed, 137 insertions(+), 77 deletions(-)

diff --git a/include/hw/arm/armv7m.h b/include/hw/arm/armv7m.h
index 4cae0d7eeaa..360c35c5fb2 100644
--- a/include/hw/arm/armv7m.h
+++ b/include/hw/arm/armv7m.h
@@ -60,11 +60,23 @@ struct ARMv7MState {
     BitBandState bitband[ARMV7M_NUM_BITBANDS];
     ARMCPU *cpu;
     ARMv7MRAS ras;
+    SysTickState systick[M_REG_NUM_BANKS];
 
     /* MemoryRegion we pass to the CPU, with our devices layered on
      * top of the ones the board provides in board_memory.
      */
     MemoryRegion container;
+    /*
+     * MemoryRegion which passes the transaction to either the S or the
+     * NS systick device depending on the transaction attributes
+     */
+    MemoryRegion systickmem;
+    /*
+     * MemoryRegion which enforces the S/NS handling of the systick
+     * device NS alias region and passes the transaction to the
+     * NS systick device if appropriate.
+     */
+    MemoryRegion systick_ns_mem;
 
     /* Properties */
     char *cpu_type;
diff --git a/include/hw/intc/armv7m_nvic.h b/include/hw/intc/armv7m_nvic.h
index 33b6d8810c7..6a6a99090c7 100644
--- a/include/hw/intc/armv7m_nvic.h
+++ b/include/hw/intc/armv7m_nvic.h
@@ -81,16 +81,12 @@ struct NVICState {
 
     MemoryRegion sysregmem;
     MemoryRegion sysreg_ns_mem;
-    MemoryRegion systickmem;
-    MemoryRegion systick_ns_mem;
     MemoryRegion container;
     MemoryRegion defaultmem;
 
     uint32_t num_irq;
     qemu_irq excpout;
     qemu_irq sysresetreq;
-
-    SysTickState systick[M_REG_NUM_BANKS];
 };
 
 #endif
diff --git a/hw/arm/armv7m.c b/hw/arm/armv7m.c
index 8964730d153..364ac069702 100644
--- a/hw/arm/armv7m.c
+++ b/hw/arm/armv7m.c
@@ -124,6 +124,85 @@ static const hwaddr bitband_output_addr[ARMV7M_NUM_BITBANDS] = {
     0x22000000, 0x42000000
 };
 
+static MemTxResult v7m_sysreg_ns_write(void *opaque, hwaddr addr,
+                                       uint64_t value, unsigned size,
+                                       MemTxAttrs attrs)
+{
+    MemoryRegion *mr = opaque;
+
+    if (attrs.secure) {
+        /* S accesses to the alias act like NS accesses to the real region */
+        attrs.secure = 0;
+        return memory_region_dispatch_write(mr, addr, value,
+                                            size_memop(size) | MO_TE, attrs);
+    } else {
+        /* NS attrs are RAZ/WI for privileged, and BusFault for user */
+        if (attrs.user) {
+            return MEMTX_ERROR;
+        }
+        return MEMTX_OK;
+    }
+}
+
+static MemTxResult v7m_sysreg_ns_read(void *opaque, hwaddr addr,
+                                      uint64_t *data, unsigned size,
+                                      MemTxAttrs attrs)
+{
+    MemoryRegion *mr = opaque;
+
+    if (attrs.secure) {
+        /* S accesses to the alias act like NS accesses to the real region */
+        attrs.secure = 0;
+        return memory_region_dispatch_read(mr, addr, data,
+                                           size_memop(size) | MO_TE, attrs);
+    } else {
+        /* NS attrs are RAZ/WI for privileged, and BusFault for user */
+        if (attrs.user) {
+            return MEMTX_ERROR;
+        }
+        *data = 0;
+        return MEMTX_OK;
+    }
+}
+
+static const MemoryRegionOps v7m_sysreg_ns_ops = {
+    .read_with_attrs = v7m_sysreg_ns_read,
+    .write_with_attrs = v7m_sysreg_ns_write,
+    .endianness = DEVICE_NATIVE_ENDIAN,
+};
+
+static MemTxResult v7m_systick_write(void *opaque, hwaddr addr,
+                                     uint64_t value, unsigned size,
+                                     MemTxAttrs attrs)
+{
+    ARMv7MState *s = opaque;
+    MemoryRegion *mr;
+
+    /* Direct the access to the correct systick */
+    mr = sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->systick[attrs.secure]), 0);
+    return memory_region_dispatch_write(mr, addr, value,
+                                        size_memop(size) | MO_TE, attrs);
+}
+
+static MemTxResult v7m_systick_read(void *opaque, hwaddr addr,
+                                    uint64_t *data, unsigned size,
+                                    MemTxAttrs attrs)
+{
+    ARMv7MState *s = opaque;
+    MemoryRegion *mr;
+
+    /* Direct the access to the correct systick */
+    mr = sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->systick[attrs.secure]), 0);
+    return memory_region_dispatch_read(mr, addr, data, size_memop(size) | MO_TE,
+                                       attrs);
+}
+
+static const MemoryRegionOps v7m_systick_ops = {
+    .read_with_attrs = v7m_systick_read,
+    .write_with_attrs = v7m_systick_write,
+    .endianness = DEVICE_NATIVE_ENDIAN,
+};
+
 static void armv7m_instance_init(Object *obj)
 {
     ARMv7MState *s = ARMV7M(obj);
@@ -137,6 +216,13 @@ static void armv7m_instance_init(Object *obj)
     object_property_add_alias(obj, "num-irq",
                               OBJECT(&s->nvic), "num-irq");
 
+    object_initialize_child(obj, "systick-reg-ns", &s->systick[M_REG_NS],
+                            TYPE_SYSTICK);
+    /*
+     * We can't initialize the secure systick here, as we don't know
+     * yet if we need it.
+     */
+
     for (i = 0; i < ARRAY_SIZE(s->bitband); i++) {
         object_initialize_child(obj, "bitband[*]", &s->bitband[i],
                                 TYPE_BITBAND);
@@ -231,6 +317,45 @@ static void armv7m_realize(DeviceState *dev, Error **errp)
     memory_region_add_subregion(&s->container, 0xe0000000,
                                 sysbus_mmio_get_region(sbd, 0));
 
+    /* Create and map the systick devices */
+    if (!sysbus_realize(SYS_BUS_DEVICE(&s->systick[M_REG_NS]), errp)) {
+        return;
+    }
+    sysbus_connect_irq(SYS_BUS_DEVICE(&s->systick[M_REG_NS]), 0,
+                       qdev_get_gpio_in_named(DEVICE(&s->nvic),
+                                              "systick-trigger", M_REG_NS));
+
+    if (arm_feature(&s->cpu->env, ARM_FEATURE_M_SECURITY)) {
+        /*
+         * We couldn't init the secure systick device in instance_init
+         * as we didn't know then if the CPU had the security extensions;
+         * so we have to do it here.
+         */
+        object_initialize_child(OBJECT(dev), "systick-reg-s",
+                                &s->systick[M_REG_S], TYPE_SYSTICK);
+
+        if (!sysbus_realize(SYS_BUS_DEVICE(&s->systick[M_REG_S]), errp)) {
+            return;
+        }
+        sysbus_connect_irq(SYS_BUS_DEVICE(&s->systick[M_REG_S]), 0,
+                           qdev_get_gpio_in_named(DEVICE(&s->nvic),
+                                                  "systick-trigger", M_REG_S));
+    }
+
+    memory_region_init_io(&s->systickmem, OBJECT(s),
+                          &v7m_systick_ops, s,
+                          "v7m_systick", 0xe0);
+
+    memory_region_add_subregion_overlap(&s->container, 0xe000e010,
+                                        &s->systickmem, 1);
+    if (arm_feature(&s->cpu->env, ARM_FEATURE_V8)) {
+        memory_region_init_io(&s->systick_ns_mem, OBJECT(s),
+                              &v7m_sysreg_ns_ops, &s->systickmem,
+                              "v7m_systick_ns", 0xe0);
+        memory_region_add_subregion_overlap(&s->container, 0xe002e010,
+                                            &s->systick_ns_mem, 1);
+    }
+
     /* If the CPU has RAS support, create the RAS register block */
     if (cpu_isar_feature(aa32_ras, s->cpu)) {
         object_initialize_child(OBJECT(dev), "armv7m-ras",
diff --git a/hw/intc/armv7m_nvic.c b/hw/intc/armv7m_nvic.c
index a5975592dfa..2b3e79a3da9 100644
--- a/hw/intc/armv7m_nvic.c
+++ b/hw/intc/armv7m_nvic.c
@@ -2517,38 +2517,6 @@ static const MemoryRegionOps nvic_sysreg_ns_ops = {
     .endianness = DEVICE_NATIVE_ENDIAN,
 };
 
-static MemTxResult nvic_systick_write(void *opaque, hwaddr addr,
-                                      uint64_t value, unsigned size,
-                                      MemTxAttrs attrs)
-{
-    NVICState *s = opaque;
-    MemoryRegion *mr;
-
-    /* Direct the access to the correct systick */
-    mr = sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->systick[attrs.secure]), 0);
-    return memory_region_dispatch_write(mr, addr, value,
-                                        size_memop(size) | MO_TE, attrs);
-}
-
-static MemTxResult nvic_systick_read(void *opaque, hwaddr addr,
-                                     uint64_t *data, unsigned size,
-                                     MemTxAttrs attrs)
-{
-    NVICState *s = opaque;
-    MemoryRegion *mr;
-
-    /* Direct the access to the correct systick */
-    mr = sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->systick[attrs.secure]), 0);
-    return memory_region_dispatch_read(mr, addr, data, size_memop(size) | MO_TE,
-                                       attrs);
-}
-
-static const MemoryRegionOps nvic_systick_ops = {
-    .read_with_attrs = nvic_systick_read,
-    .write_with_attrs = nvic_systick_write,
-    .endianness = DEVICE_NATIVE_ENDIAN,
-};
-
 /*
  * Unassigned portions of the PPB space are RAZ/WI for privileged
  * accesses, and fault for non-privileged accesses.
@@ -2801,29 +2769,6 @@ static void armv7m_nvic_realize(DeviceState *dev, Error **errp)
 
     s->num_prio_bits = arm_feature(&s->cpu->env, ARM_FEATURE_V7) ? 8 : 2;
 
-    if (!sysbus_realize(SYS_BUS_DEVICE(&s->systick[M_REG_NS]), errp)) {
-        return;
-    }
-    sysbus_connect_irq(SYS_BUS_DEVICE(&s->systick[M_REG_NS]), 0,
-                       qdev_get_gpio_in_named(dev, "systick-trigger",
-                                              M_REG_NS));
-
-    if (arm_feature(&s->cpu->env, ARM_FEATURE_M_SECURITY)) {
-        /* We couldn't init the secure systick device in instance_init
-         * as we didn't know then if the CPU had the security extensions;
-         * so we have to do it here.
-         */
-        object_initialize_child(OBJECT(dev), "systick-reg-s",
-                                &s->systick[M_REG_S], TYPE_SYSTICK);
-
-        if (!sysbus_realize(SYS_BUS_DEVICE(&s->systick[M_REG_S]), errp)) {
-            return;
-        }
-        sysbus_connect_irq(SYS_BUS_DEVICE(&s->systick[M_REG_S]), 0,
-                           qdev_get_gpio_in_named(dev, "systick-trigger",
-                                                  M_REG_S));
-    }
-
     /*
      * This device provides a single sysbus memory region which
      * represents the whole of the "System PPB" space. This is the
@@ -2877,23 +2822,11 @@ static void armv7m_nvic_realize(DeviceState *dev, Error **errp)
                           "nvic_sysregs", 0x1000);
     memory_region_add_subregion(&s->container, 0xe000, &s->sysregmem);
 
-    memory_region_init_io(&s->systickmem, OBJECT(s),
-                          &nvic_systick_ops, s,
-                          "nvic_systick", 0xe0);
-
-    memory_region_add_subregion_overlap(&s->container, 0xe010,
-                                        &s->systickmem, 1);
-
     if (arm_feature(&s->cpu->env, ARM_FEATURE_V8)) {
         memory_region_init_io(&s->sysreg_ns_mem, OBJECT(s),
                               &nvic_sysreg_ns_ops, &s->sysregmem,
                               "nvic_sysregs_ns", 0x1000);
         memory_region_add_subregion(&s->container, 0x2e000, &s->sysreg_ns_mem);
-        memory_region_init_io(&s->systick_ns_mem, OBJECT(s),
-                              &nvic_sysreg_ns_ops, &s->systickmem,
-                              "nvic_systick_ns", 0xe0);
-        memory_region_add_subregion_overlap(&s->container, 0x2e010,
-                                            &s->systick_ns_mem, 1);
     }
 
     sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->container);
@@ -2905,12 +2838,6 @@ static void armv7m_nvic_instance_init(Object *obj)
     NVICState *nvic = NVIC(obj);
     SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
 
-    object_initialize_child(obj, "systick-reg-ns", &nvic->systick[M_REG_NS],
-                            TYPE_SYSTICK);
-    /* We can't initialize the secure systick here, as we don't know
-     * yet if we need it.
-     */
-
     sysbus_init_irq(sbd, &nvic->excpout);
     qdev_init_gpio_out_named(dev, &nvic->sysresetreq, "SYSRESETREQ", 1);
     qdev_init_gpio_in_named(dev, nvic_systick_trigger, "systick-trigger",
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 29/51] arm: Move system PPB container handling to armv7m
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (27 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 28/51] arm: Move systick device creation from NVIC to ARMv7M object Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 30/51] hw/timer/armv7m_systick: Add usual QEMU interface comment Peter Maydell
                   ` (22 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

Instead of having the NVIC device provide a single sysbus memory
region covering the whole of the "System PPB" space, which implements
the default behaviour for unimplemented ranges and provides the NS
alias window to the sysregs as well as the main sysreg MR, move this
handling to the container armv7m device.  The NVIC now provides a
single memory region which just implements the system registers.
This consolidates all the handling of "map various devices in the
PPB" into the armv7m container where it belongs.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alexandre Iooss <erdnaxe@crans.org>
Reviewed-by: Luc Michel <luc@lmichel.fr>
Message-id: 20210812093356.1946-4-peter.maydell@linaro.org
---
 include/hw/arm/armv7m.h       |   4 +
 include/hw/intc/armv7m_nvic.h |   3 -
 hw/arm/armv7m.c               | 100 ++++++++++++++++++++++-
 hw/intc/armv7m_nvic.c         | 145 +---------------------------------
 4 files changed, 107 insertions(+), 145 deletions(-)

diff --git a/include/hw/arm/armv7m.h b/include/hw/arm/armv7m.h
index 360c35c5fb2..fe8b248a6c6 100644
--- a/include/hw/arm/armv7m.h
+++ b/include/hw/arm/armv7m.h
@@ -77,6 +77,10 @@ struct ARMv7MState {
      * NS systick device if appropriate.
      */
     MemoryRegion systick_ns_mem;
+    /* Ditto, for the sysregs region provided by the NVIC */
+    MemoryRegion sysreg_ns_mem;
+    /* MR providing default PPB behaviour */
+    MemoryRegion defaultmem;
 
     /* Properties */
     char *cpu_type;
diff --git a/include/hw/intc/armv7m_nvic.h b/include/hw/intc/armv7m_nvic.h
index 6a6a99090c7..0180c7b0ca1 100644
--- a/include/hw/intc/armv7m_nvic.h
+++ b/include/hw/intc/armv7m_nvic.h
@@ -80,9 +80,6 @@ struct NVICState {
     int vectpending_prio; /* group prio of the exeception in vectpending */
 
     MemoryRegion sysregmem;
-    MemoryRegion sysreg_ns_mem;
-    MemoryRegion container;
-    MemoryRegion defaultmem;
 
     uint32_t num_irq;
     qemu_irq excpout;
diff --git a/hw/arm/armv7m.c b/hw/arm/armv7m.c
index 364ac069702..899159f70b1 100644
--- a/hw/arm/armv7m.c
+++ b/hw/arm/armv7m.c
@@ -18,6 +18,7 @@
 #include "sysemu/reset.h"
 #include "qemu/error-report.h"
 #include "qemu/module.h"
+#include "qemu/log.h"
 #include "target/arm/idau.h"
 
 /* Bitbanded IO.  Each word corresponds to a single bit.  */
@@ -203,6 +204,43 @@ static const MemoryRegionOps v7m_systick_ops = {
     .endianness = DEVICE_NATIVE_ENDIAN,
 };
 
+/*
+ * Unassigned portions of the PPB space are RAZ/WI for privileged
+ * accesses, and fault for non-privileged accesses.
+ */
+static MemTxResult ppb_default_read(void *opaque, hwaddr addr,
+                                    uint64_t *data, unsigned size,
+                                    MemTxAttrs attrs)
+{
+    qemu_log_mask(LOG_UNIMP, "Read of unassigned area of PPB: offset 0x%x\n",
+                  (uint32_t)addr);
+    if (attrs.user) {
+        return MEMTX_ERROR;
+    }
+    *data = 0;
+    return MEMTX_OK;
+}
+
+static MemTxResult ppb_default_write(void *opaque, hwaddr addr,
+                                     uint64_t value, unsigned size,
+                                     MemTxAttrs attrs)
+{
+    qemu_log_mask(LOG_UNIMP, "Write of unassigned area of PPB: offset 0x%x\n",
+                  (uint32_t)addr);
+    if (attrs.user) {
+        return MEMTX_ERROR;
+    }
+    return MEMTX_OK;
+}
+
+static const MemoryRegionOps ppb_default_ops = {
+    .read_with_attrs = ppb_default_read,
+    .write_with_attrs = ppb_default_write,
+    .endianness = DEVICE_NATIVE_ENDIAN,
+    .valid.min_access_size = 1,
+    .valid.max_access_size = 8,
+};
+
 static void armv7m_instance_init(Object *obj)
 {
     ARMv7MState *s = ARMV7M(obj);
@@ -309,13 +347,73 @@ static void armv7m_realize(DeviceState *dev, Error **errp)
     qdev_pass_gpios(DEVICE(&s->nvic), dev, "SYSRESETREQ");
     qdev_pass_gpios(DEVICE(&s->nvic), dev, "NMI");
 
+    /*
+     * We map various devices into the container MR at their architected
+     * addresses. In particular, we map everything corresponding to the
+     * "System PPB" space. This is the range from 0xe0000000 to 0xe00fffff
+     * and includes the NVIC, the System Control Space (system registers),
+     * the systick timer, and for CPUs with the Security extension an NS
+     * banked version of all of these.
+     *
+     * The default behaviour for unimplemented registers/ranges
+     * (for instance the Data Watchpoint and Trace unit at 0xe0001000)
+     * is to RAZ/WI for privileged access and BusFault for non-privileged
+     * access.
+     *
+     * The NVIC and System Control Space (SCS) starts at 0xe000e000
+     * and looks like this:
+     *  0x004 - ICTR
+     *  0x010 - 0xff - systick
+     *  0x100..0x7ec - NVIC
+     *  0x7f0..0xcff - Reserved
+     *  0xd00..0xd3c - SCS registers
+     *  0xd40..0xeff - Reserved or Not implemented
+     *  0xf00 - STIR
+     *
+     * Some registers within this space are banked between security states.
+     * In v8M there is a second range 0xe002e000..0xe002efff which is the
+     * NonSecure alias SCS; secure accesses to this behave like NS accesses
+     * to the main SCS range, and non-secure accesses (including when
+     * the security extension is not implemented) are RAZ/WI.
+     * Note that both the main SCS range and the alias range are defined
+     * to be exempt from memory attribution (R_BLJT) and so the memory
+     * transaction attribute always matches the current CPU security
+     * state (attrs.secure == env->v7m.secure). In the v7m_sysreg_ns_ops
+     * wrappers we change attrs.secure to indicate the NS access; so
+     * generally code determining which banked register to use should
+     * use attrs.secure; code determining actual behaviour of the system
+     * should use env->v7m.secure.
+     *
+     * Within the PPB space, some MRs overlap, and the priority
+     * of overlapping regions is:
+     *  - default region (for RAZ/WI and BusFault) : -1
+     *  - system register regions (provided by the NVIC) : 0
+     *  - systick : 1
+     * This is because the systick device is a small block of registers
+     * in the middle of the other system control registers.
+     */
+
+    memory_region_init_io(&s->defaultmem, OBJECT(s), &ppb_default_ops, s,
+                          "nvic-default", 0x100000);
+    memory_region_add_subregion_overlap(&s->container, 0xe0000000,
+                                        &s->defaultmem, -1);
+
     /* Wire the NVIC up to the CPU */
     sbd = SYS_BUS_DEVICE(&s->nvic);
     sysbus_connect_irq(sbd, 0,
                        qdev_get_gpio_in(DEVICE(s->cpu), ARM_CPU_IRQ));
 
-    memory_region_add_subregion(&s->container, 0xe0000000,
+    memory_region_add_subregion(&s->container, 0xe000e000,
                                 sysbus_mmio_get_region(sbd, 0));
+    if (arm_feature(&s->cpu->env, ARM_FEATURE_V8)) {
+        /* Create the NS alias region for the NVIC sysregs */
+        memory_region_init_io(&s->sysreg_ns_mem, OBJECT(s),
+                              &v7m_sysreg_ns_ops,
+                              sysbus_mmio_get_region(sbd, 0),
+                              "nvic_sysregs_ns", 0x1000);
+        memory_region_add_subregion(&s->container, 0xe002e000,
+                                    &s->sysreg_ns_mem);
+    }
 
     /* Create and map the systick devices */
     if (!sysbus_realize(SYS_BUS_DEVICE(&s->systick[M_REG_NS]), errp)) {
diff --git a/hw/intc/armv7m_nvic.c b/hw/intc/armv7m_nvic.c
index 2b3e79a3da9..13df002ce4d 100644
--- a/hw/intc/armv7m_nvic.c
+++ b/hw/intc/armv7m_nvic.c
@@ -2470,90 +2470,6 @@ static const MemoryRegionOps nvic_sysreg_ops = {
     .endianness = DEVICE_NATIVE_ENDIAN,
 };
 
-static MemTxResult nvic_sysreg_ns_write(void *opaque, hwaddr addr,
-                                        uint64_t value, unsigned size,
-                                        MemTxAttrs attrs)
-{
-    MemoryRegion *mr = opaque;
-
-    if (attrs.secure) {
-        /* S accesses to the alias act like NS accesses to the real region */
-        attrs.secure = 0;
-        return memory_region_dispatch_write(mr, addr, value,
-                                            size_memop(size) | MO_TE, attrs);
-    } else {
-        /* NS attrs are RAZ/WI for privileged, and BusFault for user */
-        if (attrs.user) {
-            return MEMTX_ERROR;
-        }
-        return MEMTX_OK;
-    }
-}
-
-static MemTxResult nvic_sysreg_ns_read(void *opaque, hwaddr addr,
-                                       uint64_t *data, unsigned size,
-                                       MemTxAttrs attrs)
-{
-    MemoryRegion *mr = opaque;
-
-    if (attrs.secure) {
-        /* S accesses to the alias act like NS accesses to the real region */
-        attrs.secure = 0;
-        return memory_region_dispatch_read(mr, addr, data,
-                                           size_memop(size) | MO_TE, attrs);
-    } else {
-        /* NS attrs are RAZ/WI for privileged, and BusFault for user */
-        if (attrs.user) {
-            return MEMTX_ERROR;
-        }
-        *data = 0;
-        return MEMTX_OK;
-    }
-}
-
-static const MemoryRegionOps nvic_sysreg_ns_ops = {
-    .read_with_attrs = nvic_sysreg_ns_read,
-    .write_with_attrs = nvic_sysreg_ns_write,
-    .endianness = DEVICE_NATIVE_ENDIAN,
-};
-
-/*
- * Unassigned portions of the PPB space are RAZ/WI for privileged
- * accesses, and fault for non-privileged accesses.
- */
-static MemTxResult ppb_default_read(void *opaque, hwaddr addr,
-                                    uint64_t *data, unsigned size,
-                                    MemTxAttrs attrs)
-{
-    qemu_log_mask(LOG_UNIMP, "Read of unassigned area of PPB: offset 0x%x\n",
-                  (uint32_t)addr);
-    if (attrs.user) {
-        return MEMTX_ERROR;
-    }
-    *data = 0;
-    return MEMTX_OK;
-}
-
-static MemTxResult ppb_default_write(void *opaque, hwaddr addr,
-                                     uint64_t value, unsigned size,
-                                     MemTxAttrs attrs)
-{
-    qemu_log_mask(LOG_UNIMP, "Write of unassigned area of PPB: offset 0x%x\n",
-                  (uint32_t)addr);
-    if (attrs.user) {
-        return MEMTX_ERROR;
-    }
-    return MEMTX_OK;
-}
-
-static const MemoryRegionOps ppb_default_ops = {
-    .read_with_attrs = ppb_default_read,
-    .write_with_attrs = ppb_default_write,
-    .endianness = DEVICE_NATIVE_ENDIAN,
-    .valid.min_access_size = 1,
-    .valid.max_access_size = 8,
-};
-
 static int nvic_post_load(void *opaque, int version_id)
 {
     NVICState *s = opaque;
@@ -2770,66 +2686,13 @@ static void armv7m_nvic_realize(DeviceState *dev, Error **errp)
     s->num_prio_bits = arm_feature(&s->cpu->env, ARM_FEATURE_V7) ? 8 : 2;
 
     /*
-     * This device provides a single sysbus memory region which
-     * represents the whole of the "System PPB" space. This is the
-     * range from 0xe0000000 to 0xe00fffff and includes the NVIC,
-     * the System Control Space (system registers), the systick timer,
-     * and for CPUs with the Security extension an NS banked version
-     * of all of these.
-     *
-     * The default behaviour for unimplemented registers/ranges
-     * (for instance the Data Watchpoint and Trace unit at 0xe0001000)
-     * is to RAZ/WI for privileged access and BusFault for non-privileged
-     * access.
-     *
-     * The NVIC and System Control Space (SCS) starts at 0xe000e000
-     * and looks like this:
-     *  0x004 - ICTR
-     *  0x010 - 0xff - systick
-     *  0x100..0x7ec - NVIC
-     *  0x7f0..0xcff - Reserved
-     *  0xd00..0xd3c - SCS registers
-     *  0xd40..0xeff - Reserved or Not implemented
-     *  0xf00 - STIR
-     *
-     * Some registers within this space are banked between security states.
-     * In v8M there is a second range 0xe002e000..0xe002efff which is the
-     * NonSecure alias SCS; secure accesses to this behave like NS accesses
-     * to the main SCS range, and non-secure accesses (including when
-     * the security extension is not implemented) are RAZ/WI.
-     * Note that both the main SCS range and the alias range are defined
-     * to be exempt from memory attribution (R_BLJT) and so the memory
-     * transaction attribute always matches the current CPU security
-     * state (attrs.secure == env->v7m.secure). In the nvic_sysreg_ns_ops
-     * wrappers we change attrs.secure to indicate the NS access; so
-     * generally code determining which banked register to use should
-     * use attrs.secure; code determining actual behaviour of the system
-     * should use env->v7m.secure.
-     *
-     * The container covers the whole PPB space. Within it the priority
-     * of overlapping regions is:
-     *  - default region (for RAZ/WI and BusFault) : -1
-     *  - system register regions : 0
-     *  - systick : 1
-     * This is because the systick device is a small block of registers
-     * in the middle of the other system control registers.
+     * This device provides a single memory region which covers the
+     * sysreg/NVIC registers from 0xE000E000 .. 0xE000EFFF, with the
+     * exception of the systick timer registers 0xE000E010 .. 0xE000E0FF.
      */
-    memory_region_init(&s->container, OBJECT(s), "nvic", 0x100000);
-    memory_region_init_io(&s->defaultmem, OBJECT(s), &ppb_default_ops, s,
-                          "nvic-default", 0x100000);
-    memory_region_add_subregion_overlap(&s->container, 0, &s->defaultmem, -1);
     memory_region_init_io(&s->sysregmem, OBJECT(s), &nvic_sysreg_ops, s,
                           "nvic_sysregs", 0x1000);
-    memory_region_add_subregion(&s->container, 0xe000, &s->sysregmem);
-
-    if (arm_feature(&s->cpu->env, ARM_FEATURE_V8)) {
-        memory_region_init_io(&s->sysreg_ns_mem, OBJECT(s),
-                              &nvic_sysreg_ns_ops, &s->sysregmem,
-                              "nvic_sysregs_ns", 0x1000);
-        memory_region_add_subregion(&s->container, 0x2e000, &s->sysreg_ns_mem);
-    }
-
-    sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->container);
+    sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->sysregmem);
 }
 
 static void armv7m_nvic_instance_init(Object *obj)
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 30/51] hw/timer/armv7m_systick: Add usual QEMU interface comment
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (28 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 29/51] arm: Move system PPB container handling to armv7m Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 31/51] hw/timer/armv7m_systick: Add input clocks Peter Maydell
                   ` (21 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

Add the usual-style QEMU interface comment documenting what
properties, etc, this device exposes.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Luc Michel <luc@lmichel.fr>
Message-id: 20210812093356.1946-5-peter.maydell@linaro.org
---
 include/hw/timer/armv7m_systick.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/include/hw/timer/armv7m_systick.h b/include/hw/timer/armv7m_systick.h
index 84496faaf96..685fc5bc0d7 100644
--- a/include/hw/timer/armv7m_systick.h
+++ b/include/hw/timer/armv7m_systick.h
@@ -20,6 +20,13 @@
 
 OBJECT_DECLARE_SIMPLE_TYPE(SysTickState, SYSTICK)
 
+/*
+ * QEMU interface:
+ *  + sysbus MMIO region 0 is the register interface (covering
+ *    the registers which are mapped at address 0xE000E010)
+ *  + sysbus IRQ 0 is the interrupt line to the NVIC
+ */
+
 struct SysTickState {
     /*< private >*/
     SysBusDevice parent_obj;
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 31/51] hw/timer/armv7m_systick: Add input clocks
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (29 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 30/51] hw/timer/armv7m_systick: Add usual QEMU interface comment Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 32/51] hw/arm/armv7m: Create " Peter Maydell
                   ` (20 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

The v7M systick timer can be programmed to run from either of
two clocks:
 * an "external reference clock" (when SYST_CSR.CLKSOURCE == 0)
 * the main CPU clock (when SYST_CSR.CLKSOURCE == 1)

Our implementation currently hardwires the external reference clock
to be 1MHz, and allows boards to set the main CPU clock frequency via
the global 'system_clock_scale'.  (Most boards set that to a constant
value; the Stellaris boards allow the guest to reprogram it via the
board-specific RCC registers).

As the first step in converting this to use the Clock infrastructure,
add input clocks to the systick device for the reference clock and
the CPU clock.  The device implementation ignores them; once we have
made all the users of the device correctly wire up the new Clocks we
will switch the implementation to use them and ignore the old
system_clock_scale.

This is a migration compat break for all M-profile boards, because of
the addition of the new clock objects to the vmstate struct.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Luc Michel <luc@lmichel.fr>
Message-id: 20210812093356.1946-6-peter.maydell@linaro.org
---
 include/hw/timer/armv7m_systick.h |  7 +++++++
 hw/timer/armv7m_systick.c         | 10 ++++++++--
 2 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/include/hw/timer/armv7m_systick.h b/include/hw/timer/armv7m_systick.h
index 685fc5bc0d7..38adf8d274e 100644
--- a/include/hw/timer/armv7m_systick.h
+++ b/include/hw/timer/armv7m_systick.h
@@ -15,6 +15,7 @@
 #include "hw/sysbus.h"
 #include "qom/object.h"
 #include "hw/ptimer.h"
+#include "hw/clock.h"
 
 #define TYPE_SYSTICK "armv7m_systick"
 
@@ -25,6 +26,10 @@ OBJECT_DECLARE_SIMPLE_TYPE(SysTickState, SYSTICK)
  *  + sysbus MMIO region 0 is the register interface (covering
  *    the registers which are mapped at address 0xE000E010)
  *  + sysbus IRQ 0 is the interrupt line to the NVIC
+ *  + Clock input "refclk" is the external reference clock
+ *    (used when SYST_CSR.CLKSOURCE == 0)
+ *  + Clock input "cpuclk" is the main CPU clock
+ *    (used when SYST_CSR.CLKSOURCE == 1)
  */
 
 struct SysTickState {
@@ -38,6 +43,8 @@ struct SysTickState {
     ptimer_state *ptimer;
     MemoryRegion iomem;
     qemu_irq irq;
+    Clock *refclk;
+    Clock *cpuclk;
 };
 
 /*
diff --git a/hw/timer/armv7m_systick.c b/hw/timer/armv7m_systick.c
index 2f192011eb0..e43f74114e8 100644
--- a/hw/timer/armv7m_systick.c
+++ b/hw/timer/armv7m_systick.c
@@ -14,6 +14,7 @@
 #include "migration/vmstate.h"
 #include "hw/irq.h"
 #include "hw/sysbus.h"
+#include "hw/qdev-clock.h"
 #include "qemu/timer.h"
 #include "qemu/log.h"
 #include "qemu/module.h"
@@ -201,6 +202,9 @@ static void systick_instance_init(Object *obj)
     memory_region_init_io(&s->iomem, obj, &systick_ops, s, "systick", 0xe0);
     sysbus_init_mmio(sbd, &s->iomem);
     sysbus_init_irq(sbd, &s->irq);
+
+    s->refclk = qdev_init_clock_in(DEVICE(obj), "refclk", NULL, NULL, 0);
+    s->cpuclk = qdev_init_clock_in(DEVICE(obj), "cpuclk", NULL, NULL, 0);
 }
 
 static void systick_realize(DeviceState *dev, Error **errp)
@@ -215,9 +219,11 @@ static void systick_realize(DeviceState *dev, Error **errp)
 
 static const VMStateDescription vmstate_systick = {
     .name = "armv7m_systick",
-    .version_id = 2,
-    .minimum_version_id = 2,
+    .version_id = 3,
+    .minimum_version_id = 3,
     .fields = (VMStateField[]) {
+        VMSTATE_CLOCK(refclk, SysTickState),
+        VMSTATE_CLOCK(cpuclk, SysTickState),
         VMSTATE_UINT32(control, SysTickState),
         VMSTATE_INT64(tick, SysTickState),
         VMSTATE_PTIMER(ptimer, SysTickState),
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 32/51] hw/arm/armv7m: Create input clocks
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (30 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 31/51] hw/timer/armv7m_systick: Add input clocks Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 33/51] armsse: Wire up systick cpuclk clock Peter Maydell
                   ` (19 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

Create input clocks on the armv7m container object which pass through
to the systick timers, so that users of the armv7m object can specify
the clocks being used.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Luc Michel <luc@lmichel.fr>
Message-id: 20210812093356.1946-7-peter.maydell@linaro.org
---
 include/hw/arm/armv7m.h |  6 ++++++
 hw/arm/armv7m.c         | 23 +++++++++++++++++++++++
 2 files changed, 29 insertions(+)

diff --git a/include/hw/arm/armv7m.h b/include/hw/arm/armv7m.h
index fe8b248a6c6..b7ba0ff409c 100644
--- a/include/hw/arm/armv7m.h
+++ b/include/hw/arm/armv7m.h
@@ -15,6 +15,7 @@
 #include "hw/misc/armv7m_ras.h"
 #include "target/arm/idau.h"
 #include "qom/object.h"
+#include "hw/clock.h"
 
 #define TYPE_BITBAND "ARM-bitband-memory"
 OBJECT_DECLARE_SIMPLE_TYPE(BitBandState, BITBAND)
@@ -51,6 +52,8 @@ OBJECT_DECLARE_SIMPLE_TYPE(ARMv7MState, ARMV7M)
  * + Property "vfp": enable VFP (forwarded to CPU object)
  * + Property "dsp": enable DSP (forwarded to CPU object)
  * + Property "enable-bitband": expose bitbanded IO
+ * + Clock input "refclk" is the external reference clock for the systick timers
+ * + Clock input "cpuclk" is the main CPU clock
  */
 struct ARMv7MState {
     /*< private >*/
@@ -82,6 +85,9 @@ struct ARMv7MState {
     /* MR providing default PPB behaviour */
     MemoryRegion defaultmem;
 
+    Clock *refclk;
+    Clock *cpuclk;
+
     /* Properties */
     char *cpu_type;
     /* MemoryRegion the board provides to us (with its devices, RAM, etc) */
diff --git a/hw/arm/armv7m.c b/hw/arm/armv7m.c
index 899159f70b1..8d08db80be8 100644
--- a/hw/arm/armv7m.c
+++ b/hw/arm/armv7m.c
@@ -14,12 +14,14 @@
 #include "hw/arm/boot.h"
 #include "hw/loader.h"
 #include "hw/qdev-properties.h"
+#include "hw/qdev-clock.h"
 #include "elf.h"
 #include "sysemu/reset.h"
 #include "qemu/error-report.h"
 #include "qemu/module.h"
 #include "qemu/log.h"
 #include "target/arm/idau.h"
+#include "migration/vmstate.h"
 
 /* Bitbanded IO.  Each word corresponds to a single bit.  */
 
@@ -265,6 +267,9 @@ static void armv7m_instance_init(Object *obj)
         object_initialize_child(obj, "bitband[*]", &s->bitband[i],
                                 TYPE_BITBAND);
     }
+
+    s->refclk = qdev_init_clock_in(DEVICE(obj), "refclk", NULL, NULL, 0);
+    s->cpuclk = qdev_init_clock_in(DEVICE(obj), "cpuclk", NULL, NULL, 0);
 }
 
 static void armv7m_realize(DeviceState *dev, Error **errp)
@@ -416,6 +421,8 @@ static void armv7m_realize(DeviceState *dev, Error **errp)
     }
 
     /* Create and map the systick devices */
+    qdev_connect_clock_in(DEVICE(&s->systick[M_REG_NS]), "refclk", s->refclk);
+    qdev_connect_clock_in(DEVICE(&s->systick[M_REG_NS]), "cpuclk", s->cpuclk);
     if (!sysbus_realize(SYS_BUS_DEVICE(&s->systick[M_REG_NS]), errp)) {
         return;
     }
@@ -431,6 +438,10 @@ static void armv7m_realize(DeviceState *dev, Error **errp)
          */
         object_initialize_child(OBJECT(dev), "systick-reg-s",
                                 &s->systick[M_REG_S], TYPE_SYSTICK);
+        qdev_connect_clock_in(DEVICE(&s->systick[M_REG_S]), "refclk",
+                              s->refclk);
+        qdev_connect_clock_in(DEVICE(&s->systick[M_REG_S]), "cpuclk",
+                              s->cpuclk);
 
         if (!sysbus_realize(SYS_BUS_DEVICE(&s->systick[M_REG_S]), errp)) {
             return;
@@ -504,11 +515,23 @@ static Property armv7m_properties[] = {
     DEFINE_PROP_END_OF_LIST(),
 };
 
+static const VMStateDescription vmstate_armv7m = {
+    .name = "armv7m",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .fields = (VMStateField[]) {
+        VMSTATE_CLOCK(refclk, SysTickState),
+        VMSTATE_CLOCK(cpuclk, SysTickState),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
 static void armv7m_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
     dc->realize = armv7m_realize;
+    dc->vmsd = &vmstate_armv7m;
     device_class_set_props(dc, armv7m_properties);
 }
 
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 33/51] armsse: Wire up systick cpuclk clock
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (31 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 32/51] hw/arm/armv7m: Create " Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 34/51] hw/arm/mps2.c: Connect up armv7m clocks Peter Maydell
                   ` (18 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

Wire up the cpuclk for the systick devices to the SSE object's
existing mainclk clock.

We do not wire up the refclk because the SSE subsystems do not
provide a refclk.  (This is documented in the IoTKit and SSE-200
TRMs; the SSE-300 TRM doesn't mention it but we assume it follows the
same approach.) When we update the systick device later to honour "no
refclk connected" this will fix a minor emulation inaccuracy for the
SSE-based boards.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Luc Michel <luc@lmichel.fr>
Message-id: 20210812093356.1946-8-peter.maydell@linaro.org
---
 hw/arm/armsse.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/hw/arm/armsse.c b/hw/arm/armsse.c
index a1456cb0f42..70b52c3d4b9 100644
--- a/hw/arm/armsse.c
+++ b/hw/arm/armsse.c
@@ -995,6 +995,9 @@ static void armsse_realize(DeviceState *dev, Error **errp)
         int j;
         char *gpioname;
 
+        qdev_connect_clock_in(cpudev, "cpuclk", s->mainclk);
+        /* The SSE subsystems do not wire up a systick refclk */
+
         qdev_prop_set_uint32(cpudev, "num-irq", s->exp_numirq + NUM_SSE_IRQS);
         /*
          * In real hardware the initial Secure VTOR is set from the INITSVTOR*
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 34/51] hw/arm/mps2.c: Connect up armv7m clocks
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (32 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 33/51] armsse: Wire up systick cpuclk clock Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 35/51] clock: Provide builtin multiplier/divider Peter Maydell
                   ` (17 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

Connect up the armv7m clocks on the mps2-an385/386/500/511.

Connect up the armv7m object's clocks on the MPS boards defined in
mps2.c.  The documentation for these FPGA images doesn't specify what
systick reference clock is used (if any), so for the moment we
provide a 1MHz refclock, which will result in no behavioural change
from the current hardwired 1MHz clock implemented in
armv7m_systick.c:systick_scale().

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Luc Michel <luc@lmichel.fr>
Message-id: 20210812093356.1946-9-peter.maydell@linaro.org
---
 hw/arm/mps2.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/hw/arm/mps2.c b/hw/arm/mps2.c
index 81413b7133e..3671f49ad7b 100644
--- a/hw/arm/mps2.c
+++ b/hw/arm/mps2.c
@@ -86,6 +86,7 @@ struct MPS2MachineState {
     CMSDKAPBWatchdog watchdog;
     CMSDKAPBTimer timer[2];
     Clock *sysclk;
+    Clock *refclk;
 };
 
 #define TYPE_MPS2_MACHINE "mps2"
@@ -99,6 +100,15 @@ OBJECT_DECLARE_TYPE(MPS2MachineState, MPS2MachineClass, MPS2_MACHINE)
 /* Main SYSCLK frequency in Hz */
 #define SYSCLK_FRQ 25000000
 
+/*
+ * The Application Notes don't say anything about how the
+ * systick reference clock is configured. (Quite possibly
+ * they don't have one at all.) This 1MHz clock matches the
+ * pre-existing behaviour that used to be hardcoded in the
+ * armv7m_systick implementation.
+ */
+#define REFCLK_FRQ (1 * 1000 * 1000)
+
 /* Initialize the auxiliary RAM region @mr and map it into
  * the memory map at @base.
  */
@@ -146,6 +156,9 @@ static void mps2_common_init(MachineState *machine)
     mms->sysclk = clock_new(OBJECT(machine), "SYSCLK");
     clock_set_hz(mms->sysclk, SYSCLK_FRQ);
 
+    mms->refclk = clock_new(OBJECT(machine), "REFCLK");
+    clock_set_hz(mms->refclk, REFCLK_FRQ);
+
     /* The FPGA images have an odd combination of different RAMs,
      * because in hardware they are different implementations and
      * connected to different buses, giving varying performance/size
@@ -223,6 +236,8 @@ static void mps2_common_init(MachineState *machine)
     default:
         g_assert_not_reached();
     }
+    qdev_connect_clock_in(armv7m, "cpuclk", mms->sysclk);
+    qdev_connect_clock_in(armv7m, "refclk", mms->refclk);
     qdev_prop_set_string(armv7m, "cpu-type", machine->cpu_type);
     qdev_prop_set_bit(armv7m, "enable-bitband", true);
     object_property_set_link(OBJECT(&mms->armv7m), "memory",
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 35/51] clock: Provide builtin multiplier/divider
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (33 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 34/51] hw/arm/mps2.c: Connect up armv7m clocks Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 36/51] hw/arm: Don't allocate separate MemoryRegions in stm32 SoC realize Peter Maydell
                   ` (16 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

It is quite common for a clock tree to involve possibly programmable
clock multipliers or dividers, where the frequency of a clock is for
instance divided by 8 to produce a slower clock to feed to a
particular device.

Currently we provide no convenient mechanism for modelling this.  You
can implement it by having an input Clock and an output Clock, and
manually setting the period of the output clock in the period-changed
callback of the input clock, but that's quite clunky.

This patch adds support in the Clock objects themselves for setting a
multiplier or divider.  The effect of setting this on a clock is that
when the clock's period is changed, all the children of the clock are
set to period * multiplier / divider, rather than being set to the
same period as the parent clock.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alexandre Iooss <erdnaxe@crans.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Luc Michel <luc@lmichel.fr>
Reviewed-by: Damien Hedde <damien.hedde@greensocs.com>
Message-id: 20210812093356.1946-10-peter.maydell@linaro.org
---
 docs/devel/clocks.rst   | 23 +++++++++++++++++++++++
 include/hw/clock.h      | 29 +++++++++++++++++++++++++++++
 hw/core/clock-vmstate.c | 40 +++++++++++++++++++++++++++++++++++++++-
 hw/core/clock.c         | 31 +++++++++++++++++++++++++++----
 hw/core/trace-events    |  1 +
 5 files changed, 119 insertions(+), 5 deletions(-)

diff --git a/docs/devel/clocks.rst b/docs/devel/clocks.rst
index 956bd147ea0..675fbeb6abe 100644
--- a/docs/devel/clocks.rst
+++ b/docs/devel/clocks.rst
@@ -260,6 +260,29 @@ clocks get the new clock period value: *Clock 2*, *Clock 3* and *Clock 4*.
 It is not possible to disconnect a clock or to change the clock connection
 after it is connected.
 
+Clock multiplier and divider settings
+-------------------------------------
+
+By default, when clocks are connected together, the child
+clocks run with the same period as their source (parent) clock.
+The Clock API supports a built-in period multiplier/divider
+mechanism so you can configure a clock to make its children
+run at a different period from its own. If you call the
+``clock_set_mul_div()`` function you can specify the clock's
+multiplier and divider values. The children of that clock
+will all run with a period of ``parent_period * multiplier / divider``.
+For instance, if the clock has a frequency of 8MHz and you set its
+multiplier to 2 and its divider to 3, the child clocks will run
+at 12MHz.
+
+You can change the multiplier and divider of a clock at runtime,
+so you can use this to model clock controller devices which
+have guest-programmable frequency multipliers or dividers.
+
+Note that ``clock_set_mul_div()`` does not automatically call
+``clock_propagate()``. If you make a runtime change to the
+multiplier or divider you must call clock_propagate() yourself.
+
 Unconnected input clocks
 ------------------------
 
diff --git a/include/hw/clock.h b/include/hw/clock.h
index a7187eab95e..11f67fb9701 100644
--- a/include/hw/clock.h
+++ b/include/hw/clock.h
@@ -81,6 +81,10 @@ struct Clock {
     void *callback_opaque;
     unsigned int callback_events;
 
+    /* Ratio of the parent clock to run the child clocks at */
+    uint32_t multiplier;
+    uint32_t divider;
+
     /* Clocks are organized in a clock tree */
     Clock *source;
     QLIST_HEAD(, Clock) children;
@@ -350,4 +354,29 @@ static inline bool clock_is_enabled(const Clock *clk)
  */
 char *clock_display_freq(Clock *clk);
 
+/**
+ * clock_set_mul_div: set multiplier/divider for child clocks
+ * @clk: clock
+ * @multiplier: multiplier value
+ * @divider: divider value
+ *
+ * By default, a Clock's children will all run with the same period
+ * as their parent. This function allows you to adjust the multiplier
+ * and divider used to derive the child clock frequency.
+ * For example, setting a multiplier of 2 and a divider of 3
+ * will run child clocks with a period 2/3 of the parent clock,
+ * so if the parent clock is an 8MHz clock the children will
+ * be 12MHz.
+ *
+ * Setting the multiplier to 0 will stop the child clocks.
+ * Setting the divider to 0 is a programming error (diagnosed with
+ * an assertion failure).
+ * Setting a multiplier value that results in the child period
+ * overflowing is not diagnosed.
+ *
+ * Note that this function does not call clock_propagate(); the
+ * caller should do that if necessary.
+ */
+void clock_set_mul_div(Clock *clk, uint32_t multiplier, uint32_t divider);
+
 #endif /* QEMU_HW_CLOCK_H */
diff --git a/hw/core/clock-vmstate.c b/hw/core/clock-vmstate.c
index 260b13fc2c8..9d9174ffbd7 100644
--- a/hw/core/clock-vmstate.c
+++ b/hw/core/clock-vmstate.c
@@ -14,12 +14,50 @@
 #include "migration/vmstate.h"
 #include "hw/clock.h"
 
+static bool muldiv_needed(void *opaque)
+{
+    Clock *clk = opaque;
+
+    return clk->multiplier != 1 || clk->divider != 1;
+}
+
+static int clock_pre_load(void *opaque)
+{
+    Clock *clk = opaque;
+    /*
+     * The initial out-of-reset settings of the Clock might have been
+     * configured by the device to be different from what we set
+     * in clock_initfn(), so we must here set the default values to
+     * be used if they are not in the inbound migration state.
+     */
+    clk->multiplier = 1;
+    clk->divider = 1;
+
+    return 0;
+}
+
+const VMStateDescription vmstate_muldiv = {
+    .name = "clock/muldiv",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .needed = muldiv_needed,
+    .fields = (VMStateField[]) {
+        VMSTATE_UINT32(multiplier, Clock),
+        VMSTATE_UINT32(divider, Clock),
+    },
+};
+
 const VMStateDescription vmstate_clock = {
     .name = "clock",
     .version_id = 0,
     .minimum_version_id = 0,
+    .pre_load = clock_pre_load,
     .fields = (VMStateField[]) {
         VMSTATE_UINT64(period, Clock),
         VMSTATE_END_OF_LIST()
-    }
+    },
+    .subsections = (const VMStateDescription*[]) {
+        &vmstate_muldiv,
+        NULL
+    },
 };
diff --git a/hw/core/clock.c b/hw/core/clock.c
index fc5a99683f8..916875e07a2 100644
--- a/hw/core/clock.c
+++ b/hw/core/clock.c
@@ -64,6 +64,15 @@ bool clock_set(Clock *clk, uint64_t period)
     return true;
 }
 
+static uint64_t clock_get_child_period(Clock *clk)
+{
+    /*
+     * Return the period to be used for child clocks, which is the parent
+     * clock period adjusted for for multiplier and divider effects.
+     */
+    return muldiv64(clk->period, clk->multiplier, clk->divider);
+}
+
 static void clock_call_callback(Clock *clk, ClockEvent event)
 {
     /*
@@ -78,15 +87,16 @@ static void clock_call_callback(Clock *clk, ClockEvent event)
 static void clock_propagate_period(Clock *clk, bool call_callbacks)
 {
     Clock *child;
+    uint64_t child_period = clock_get_child_period(clk);
 
     QLIST_FOREACH(child, &clk->children, sibling) {
-        if (child->period != clk->period) {
+        if (child->period != child_period) {
             if (call_callbacks) {
                 clock_call_callback(child, ClockPreUpdate);
             }
-            child->period = clk->period;
+            child->period = child_period;
             trace_clock_update(CLOCK_PATH(child), CLOCK_PATH(clk),
-                               CLOCK_PERIOD_TO_HZ(clk->period),
+                               CLOCK_PERIOD_TO_HZ(child->period),
                                call_callbacks);
             if (call_callbacks) {
                 clock_call_callback(child, ClockUpdate);
@@ -110,7 +120,7 @@ void clock_set_source(Clock *clk, Clock *src)
 
     trace_clock_set_source(CLOCK_PATH(clk), CLOCK_PATH(src));
 
-    clk->period = src->period;
+    clk->period = clock_get_child_period(src);
     QLIST_INSERT_HEAD(&src->children, clk, sibling);
     clk->source = src;
     clock_propagate_period(clk, false);
@@ -133,10 +143,23 @@ char *clock_display_freq(Clock *clk)
     return freq_to_str(clock_get_hz(clk));
 }
 
+void clock_set_mul_div(Clock *clk, uint32_t multiplier, uint32_t divider)
+{
+    assert(divider != 0);
+
+    trace_clock_set_mul_div(CLOCK_PATH(clk), clk->multiplier, multiplier,
+                            clk->divider, divider);
+    clk->multiplier = multiplier;
+    clk->divider = divider;
+}
+
 static void clock_initfn(Object *obj)
 {
     Clock *clk = CLOCK(obj);
 
+    clk->multiplier = 1;
+    clk->divider = 1;
+
     QLIST_INIT(&clk->children);
 }
 
diff --git a/hw/core/trace-events b/hw/core/trace-events
index 360ddeb2c87..9b3ecce3b2f 100644
--- a/hw/core/trace-events
+++ b/hw/core/trace-events
@@ -34,3 +34,4 @@ clock_disconnect(const char *clk) "'%s'"
 clock_set(const char *clk, uint64_t old, uint64_t new) "'%s', %"PRIu64"Hz->%"PRIu64"Hz"
 clock_propagate(const char *clk) "'%s'"
 clock_update(const char *clk, const char *src, uint64_t hz, int cb) "'%s', src='%s', val=%"PRIu64"Hz cb=%d"
+clock_set_mul_div(const char *clk, uint32_t oldmul, uint32_t mul, uint32_t olddiv, uint32_t div) "'%s', mul: %u -> %u, div: %u -> %u"
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 36/51] hw/arm: Don't allocate separate MemoryRegions in stm32 SoC realize
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (34 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 35/51] clock: Provide builtin multiplier/divider Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 37/51] hw/arm/stm32f100: Wire up sysclk and refclk Peter Maydell
                   ` (15 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

In the realize methods of the stm32f100 and stm32f205 SoC objects, we
call g_new() to create new MemoryRegion objects for the sram, flash,
and flash_alias.  This is unnecessary (and leaves open the
possibility of leaking the allocations if we exit from realize with
an error).  Make these MemoryRegions member fields of the device
state struct instead, as stm32f405 already does.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alexandre Iooss <erdnaxe@crans.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Luc Michel <luc@lmichel.fr>
Message-id: 20210812093356.1946-11-peter.maydell@linaro.org
---
 include/hw/arm/stm32f100_soc.h |  4 ++++
 include/hw/arm/stm32f205_soc.h |  4 ++++
 hw/arm/stm32f100_soc.c         | 17 +++++++----------
 hw/arm/stm32f205_soc.c         | 17 +++++++----------
 4 files changed, 22 insertions(+), 20 deletions(-)

diff --git a/include/hw/arm/stm32f100_soc.h b/include/hw/arm/stm32f100_soc.h
index 71bffcf4fd5..b7d71c6c634 100644
--- a/include/hw/arm/stm32f100_soc.h
+++ b/include/hw/arm/stm32f100_soc.h
@@ -52,6 +52,10 @@ struct STM32F100State {
 
     STM32F2XXUsartState usart[STM_NUM_USARTS];
     STM32F2XXSPIState spi[STM_NUM_SPIS];
+
+    MemoryRegion sram;
+    MemoryRegion flash;
+    MemoryRegion flash_alias;
 };
 
 #endif
diff --git a/include/hw/arm/stm32f205_soc.h b/include/hw/arm/stm32f205_soc.h
index 985ff63aa9e..75251494917 100644
--- a/include/hw/arm/stm32f205_soc.h
+++ b/include/hw/arm/stm32f205_soc.h
@@ -63,6 +63,10 @@ struct STM32F205State {
     STM32F2XXSPIState spi[STM_NUM_SPIS];
 
     qemu_or_irq *adc_irqs;
+
+    MemoryRegion sram;
+    MemoryRegion flash;
+    MemoryRegion flash_alias;
 };
 
 #endif
diff --git a/hw/arm/stm32f100_soc.c b/hw/arm/stm32f100_soc.c
index 0c4a5c66451..0be92b2c475 100644
--- a/hw/arm/stm32f100_soc.c
+++ b/hw/arm/stm32f100_soc.c
@@ -67,25 +67,22 @@ static void stm32f100_soc_realize(DeviceState *dev_soc, Error **errp)
     int i;
 
     MemoryRegion *system_memory = get_system_memory();
-    MemoryRegion *sram = g_new(MemoryRegion, 1);
-    MemoryRegion *flash = g_new(MemoryRegion, 1);
-    MemoryRegion *flash_alias = g_new(MemoryRegion, 1);
 
     /*
      * Init flash region
      * Flash starts at 0x08000000 and then is aliased to boot memory at 0x0
      */
-    memory_region_init_rom(flash, OBJECT(dev_soc), "STM32F100.flash",
+    memory_region_init_rom(&s->flash, OBJECT(dev_soc), "STM32F100.flash",
                            FLASH_SIZE, &error_fatal);
-    memory_region_init_alias(flash_alias, OBJECT(dev_soc),
-                             "STM32F100.flash.alias", flash, 0, FLASH_SIZE);
-    memory_region_add_subregion(system_memory, FLASH_BASE_ADDRESS, flash);
-    memory_region_add_subregion(system_memory, 0, flash_alias);
+    memory_region_init_alias(&s->flash_alias, OBJECT(dev_soc),
+                             "STM32F100.flash.alias", &s->flash, 0, FLASH_SIZE);
+    memory_region_add_subregion(system_memory, FLASH_BASE_ADDRESS, &s->flash);
+    memory_region_add_subregion(system_memory, 0, &s->flash_alias);
 
     /* Init SRAM region */
-    memory_region_init_ram(sram, NULL, "STM32F100.sram", SRAM_SIZE,
+    memory_region_init_ram(&s->sram, NULL, "STM32F100.sram", SRAM_SIZE,
                            &error_fatal);
-    memory_region_add_subregion(system_memory, SRAM_BASE_ADDRESS, sram);
+    memory_region_add_subregion(system_memory, SRAM_BASE_ADDRESS, &s->sram);
 
     /* Init ARMv7m */
     armv7m = DEVICE(&s->armv7m);
diff --git a/hw/arm/stm32f205_soc.c b/hw/arm/stm32f205_soc.c
index 9cd41bf56da..0bd215aebd7 100644
--- a/hw/arm/stm32f205_soc.c
+++ b/hw/arm/stm32f205_soc.c
@@ -84,21 +84,18 @@ static void stm32f205_soc_realize(DeviceState *dev_soc, Error **errp)
     int i;
 
     MemoryRegion *system_memory = get_system_memory();
-    MemoryRegion *sram = g_new(MemoryRegion, 1);
-    MemoryRegion *flash = g_new(MemoryRegion, 1);
-    MemoryRegion *flash_alias = g_new(MemoryRegion, 1);
 
-    memory_region_init_rom(flash, OBJECT(dev_soc), "STM32F205.flash",
+    memory_region_init_rom(&s->flash, OBJECT(dev_soc), "STM32F205.flash",
                            FLASH_SIZE, &error_fatal);
-    memory_region_init_alias(flash_alias, OBJECT(dev_soc),
-                             "STM32F205.flash.alias", flash, 0, FLASH_SIZE);
+    memory_region_init_alias(&s->flash_alias, OBJECT(dev_soc),
+                             "STM32F205.flash.alias", &s->flash, 0, FLASH_SIZE);
 
-    memory_region_add_subregion(system_memory, FLASH_BASE_ADDRESS, flash);
-    memory_region_add_subregion(system_memory, 0, flash_alias);
+    memory_region_add_subregion(system_memory, FLASH_BASE_ADDRESS, &s->flash);
+    memory_region_add_subregion(system_memory, 0, &s->flash_alias);
 
-    memory_region_init_ram(sram, NULL, "STM32F205.sram", SRAM_SIZE,
+    memory_region_init_ram(&s->sram, NULL, "STM32F205.sram", SRAM_SIZE,
                            &error_fatal);
-    memory_region_add_subregion(system_memory, SRAM_BASE_ADDRESS, sram);
+    memory_region_add_subregion(system_memory, SRAM_BASE_ADDRESS, &s->sram);
 
     armv7m = DEVICE(&s->armv7m);
     qdev_prop_set_uint32(armv7m, "num-irq", 96);
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 37/51] hw/arm/stm32f100: Wire up sysclk and refclk
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (35 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 36/51] hw/arm: Don't allocate separate MemoryRegions in stm32 SoC realize Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 38/51] hw/arm/stm32f205: " Peter Maydell
                   ` (14 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

Wire up the sysclk and refclk for the stm32f100 SoC.  This SoC always
runs the systick refclk at 1/8 the frequency of the main CPU clock,
so the board code only needs to provide a single sysclk clock.

Because there is only one board using this SoC, we convert the SoC
and the board together, rather than splitting it into "add clock to
SoC; connect clock in board; add error check in SoC code that clock
is wired up".

When the systick device starts honouring its clock inputs, this will
fix an emulation inaccuracy in the stm32vldiscovery board where the
systick reference clock was running at 1MHz rather than 3MHz.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Alexandre Iooss <erdnaxe@crans.org>
Reviewed-by: Luc Michel <luc@lmichel.fr>
Message-id: 20210812093356.1946-12-peter.maydell@linaro.org
---
 include/hw/arm/stm32f100_soc.h |  4 ++++
 hw/arm/stm32f100_soc.c         | 30 ++++++++++++++++++++++++++++++
 hw/arm/stm32vldiscovery.c      | 12 +++++++-----
 3 files changed, 41 insertions(+), 5 deletions(-)

diff --git a/include/hw/arm/stm32f100_soc.h b/include/hw/arm/stm32f100_soc.h
index b7d71c6c634..40cd415b284 100644
--- a/include/hw/arm/stm32f100_soc.h
+++ b/include/hw/arm/stm32f100_soc.h
@@ -29,6 +29,7 @@
 #include "hw/ssi/stm32f2xx_spi.h"
 #include "hw/arm/armv7m.h"
 #include "qom/object.h"
+#include "hw/clock.h"
 
 #define TYPE_STM32F100_SOC "stm32f100-soc"
 OBJECT_DECLARE_SIMPLE_TYPE(STM32F100State, STM32F100_SOC)
@@ -56,6 +57,9 @@ struct STM32F100State {
     MemoryRegion sram;
     MemoryRegion flash;
     MemoryRegion flash_alias;
+
+    Clock *sysclk;
+    Clock *refclk;
 };
 
 #endif
diff --git a/hw/arm/stm32f100_soc.c b/hw/arm/stm32f100_soc.c
index 0be92b2c475..f7b344ba9fb 100644
--- a/hw/arm/stm32f100_soc.c
+++ b/hw/arm/stm32f100_soc.c
@@ -30,6 +30,7 @@
 #include "exec/address-spaces.h"
 #include "hw/arm/stm32f100_soc.h"
 #include "hw/qdev-properties.h"
+#include "hw/qdev-clock.h"
 #include "hw/misc/unimp.h"
 #include "sysemu/sysemu.h"
 
@@ -57,6 +58,9 @@ static void stm32f100_soc_initfn(Object *obj)
     for (i = 0; i < STM_NUM_SPIS; i++) {
         object_initialize_child(obj, "spi[*]", &s->spi[i], TYPE_STM32F2XX_SPI);
     }
+
+    s->sysclk = qdev_init_clock_in(DEVICE(s), "sysclk", NULL, NULL, 0);
+    s->refclk = qdev_init_clock_in(DEVICE(s), "refclk", NULL, NULL, 0);
 }
 
 static void stm32f100_soc_realize(DeviceState *dev_soc, Error **errp)
@@ -68,6 +72,30 @@ static void stm32f100_soc_realize(DeviceState *dev_soc, Error **errp)
 
     MemoryRegion *system_memory = get_system_memory();
 
+    /*
+     * We use s->refclk internally and only define it with qdev_init_clock_in()
+     * so it is correctly parented and not leaked on an init/deinit; it is not
+     * intended as an externally exposed clock.
+     */
+    if (clock_has_source(s->refclk)) {
+        error_setg(errp, "refclk clock must not be wired up by the board code");
+        return;
+    }
+
+    if (!clock_has_source(s->sysclk)) {
+        error_setg(errp, "sysclk clock must be wired up by the board code");
+        return;
+    }
+
+    /*
+     * TODO: ideally we should model the SoC RCC and its ability to
+     * change the sysclk frequency and define different sysclk sources.
+     */
+
+    /* The refclk always runs at frequency HCLK / 8 */
+    clock_set_mul_div(s->refclk, 8, 1);
+    clock_set_source(s->refclk, s->sysclk);
+
     /*
      * Init flash region
      * Flash starts at 0x08000000 and then is aliased to boot memory at 0x0
@@ -89,6 +117,8 @@ static void stm32f100_soc_realize(DeviceState *dev_soc, Error **errp)
     qdev_prop_set_uint32(armv7m, "num-irq", 61);
     qdev_prop_set_string(armv7m, "cpu-type", s->cpu_type);
     qdev_prop_set_bit(armv7m, "enable-bitband", true);
+    qdev_connect_clock_in(armv7m, "cpuclk", s->sysclk);
+    qdev_connect_clock_in(armv7m, "refclk", s->refclk);
     object_property_set_link(OBJECT(&s->armv7m), "memory",
                              OBJECT(get_system_memory()), &error_abort);
     if (!sysbus_realize(SYS_BUS_DEVICE(&s->armv7m), errp)) {
diff --git a/hw/arm/stm32vldiscovery.c b/hw/arm/stm32vldiscovery.c
index 7e8191ebf5f..07e401a818d 100644
--- a/hw/arm/stm32vldiscovery.c
+++ b/hw/arm/stm32vldiscovery.c
@@ -27,6 +27,7 @@
 #include "qapi/error.h"
 #include "hw/boards.h"
 #include "hw/qdev-properties.h"
+#include "hw/qdev-clock.h"
 #include "qemu/error-report.h"
 #include "hw/arm/stm32f100_soc.h"
 #include "hw/arm/boot.h"
@@ -39,16 +40,17 @@
 static void stm32vldiscovery_init(MachineState *machine)
 {
     DeviceState *dev;
+    Clock *sysclk;
 
-    /*
-     * TODO: ideally we would model the SoC RCC and let it handle
-     * system_clock_scale, including its ability to define different
-     * possible SYSCLK sources.
-     */
     system_clock_scale = NANOSECONDS_PER_SECOND / SYSCLK_FRQ;
 
+    /* This clock doesn't need migration because it is fixed-frequency */
+    sysclk = clock_new(OBJECT(machine), "SYSCLK");
+    clock_set_hz(sysclk, SYSCLK_FRQ);
+
     dev = qdev_new(TYPE_STM32F100_SOC);
     qdev_prop_set_string(dev, "cpu-type", ARM_CPU_TYPE_NAME("cortex-m3"));
+    qdev_connect_clock_in(dev, "sysclk", sysclk);
     sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
 
     armv7m_load_kernel(ARM_CPU(first_cpu),
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 38/51] hw/arm/stm32f205: Wire up sysclk and refclk
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (36 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 37/51] hw/arm/stm32f100: Wire up sysclk and refclk Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 39/51] hw/arm/stm32f405: " Peter Maydell
                   ` (13 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

Wire up the sysclk and refclk for the stm32f205 SoC.  This SoC always
runs the systick refclk at 1/8 the frequency of the main CPU clock,
so the board code only needs to provide a single sysclk clock.

Because there is only one board using this SoC, we convert the SoC
and the board together, rather than splitting it into "add clock to
SoC; connect clock in board; add error check in SoC code that clock
is wired up".

When the systick device starts honouring its clock inputs, this will
fix an emulation inaccuracy in the netduino2 board where the systick
reference clock was running at 1MHz rather than 15MHz.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Alexandre Iooss <erdnaxe@crans.org>
Reviewed-by: Luc Michel <luc@lmichel.fr>
Message-id: 20210812093356.1946-13-peter.maydell@linaro.org
---
 include/hw/arm/stm32f205_soc.h |  4 ++++
 hw/arm/netduino2.c             | 12 +++++++-----
 hw/arm/stm32f205_soc.c         | 30 ++++++++++++++++++++++++++++++
 3 files changed, 41 insertions(+), 5 deletions(-)

diff --git a/include/hw/arm/stm32f205_soc.h b/include/hw/arm/stm32f205_soc.h
index 75251494917..849d3ed8891 100644
--- a/include/hw/arm/stm32f205_soc.h
+++ b/include/hw/arm/stm32f205_soc.h
@@ -32,6 +32,7 @@
 #include "hw/or-irq.h"
 #include "hw/ssi/stm32f2xx_spi.h"
 #include "hw/arm/armv7m.h"
+#include "hw/clock.h"
 #include "qom/object.h"
 
 #define TYPE_STM32F205_SOC "stm32f205-soc"
@@ -67,6 +68,9 @@ struct STM32F205State {
     MemoryRegion sram;
     MemoryRegion flash;
     MemoryRegion flash_alias;
+
+    Clock *sysclk;
+    Clock *refclk;
 };
 
 #endif
diff --git a/hw/arm/netduino2.c b/hw/arm/netduino2.c
index 1733b71507c..b5c0ba23ee5 100644
--- a/hw/arm/netduino2.c
+++ b/hw/arm/netduino2.c
@@ -26,6 +26,7 @@
 #include "qapi/error.h"
 #include "hw/boards.h"
 #include "hw/qdev-properties.h"
+#include "hw/qdev-clock.h"
 #include "qemu/error-report.h"
 #include "hw/arm/stm32f205_soc.h"
 #include "hw/arm/boot.h"
@@ -36,16 +37,17 @@
 static void netduino2_init(MachineState *machine)
 {
     DeviceState *dev;
+    Clock *sysclk;
 
-    /*
-     * TODO: ideally we would model the SoC RCC and let it handle
-     * system_clock_scale, including its ability to define different
-     * possible SYSCLK sources.
-     */
     system_clock_scale = NANOSECONDS_PER_SECOND / SYSCLK_FRQ;
 
+    /* This clock doesn't need migration because it is fixed-frequency */
+    sysclk = clock_new(OBJECT(machine), "SYSCLK");
+    clock_set_hz(sysclk, SYSCLK_FRQ);
+
     dev = qdev_new(TYPE_STM32F205_SOC);
     qdev_prop_set_string(dev, "cpu-type", ARM_CPU_TYPE_NAME("cortex-m3"));
+    qdev_connect_clock_in(dev, "sysclk", sysclk);
     sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
 
     armv7m_load_kernel(ARM_CPU(first_cpu), machine->kernel_filename,
diff --git a/hw/arm/stm32f205_soc.c b/hw/arm/stm32f205_soc.c
index 0bd215aebd7..c6b75a381d9 100644
--- a/hw/arm/stm32f205_soc.c
+++ b/hw/arm/stm32f205_soc.c
@@ -29,6 +29,7 @@
 #include "exec/address-spaces.h"
 #include "hw/arm/stm32f205_soc.h"
 #include "hw/qdev-properties.h"
+#include "hw/qdev-clock.h"
 #include "sysemu/sysemu.h"
 
 /* At the moment only Timer 2 to 5 are modelled */
@@ -74,6 +75,9 @@ static void stm32f205_soc_initfn(Object *obj)
     for (i = 0; i < STM_NUM_SPIS; i++) {
         object_initialize_child(obj, "spi[*]", &s->spi[i], TYPE_STM32F2XX_SPI);
     }
+
+    s->sysclk = qdev_init_clock_in(DEVICE(s), "sysclk", NULL, NULL, 0);
+    s->refclk = qdev_init_clock_in(DEVICE(s), "refclk", NULL, NULL, 0);
 }
 
 static void stm32f205_soc_realize(DeviceState *dev_soc, Error **errp)
@@ -85,6 +89,30 @@ static void stm32f205_soc_realize(DeviceState *dev_soc, Error **errp)
 
     MemoryRegion *system_memory = get_system_memory();
 
+    /*
+     * We use s->refclk internally and only define it with qdev_init_clock_in()
+     * so it is correctly parented and not leaked on an init/deinit; it is not
+     * intended as an externally exposed clock.
+     */
+    if (clock_has_source(s->refclk)) {
+        error_setg(errp, "refclk clock must not be wired up by the board code");
+        return;
+    }
+
+    if (!clock_has_source(s->sysclk)) {
+        error_setg(errp, "sysclk clock must be wired up by the board code");
+        return;
+    }
+
+    /*
+     * TODO: ideally we should model the SoC RCC and its ability to
+     * change the sysclk frequency and define different sysclk sources.
+     */
+
+    /* The refclk always runs at frequency HCLK / 8 */
+    clock_set_mul_div(s->refclk, 8, 1);
+    clock_set_source(s->refclk, s->sysclk);
+
     memory_region_init_rom(&s->flash, OBJECT(dev_soc), "STM32F205.flash",
                            FLASH_SIZE, &error_fatal);
     memory_region_init_alias(&s->flash_alias, OBJECT(dev_soc),
@@ -101,6 +129,8 @@ static void stm32f205_soc_realize(DeviceState *dev_soc, Error **errp)
     qdev_prop_set_uint32(armv7m, "num-irq", 96);
     qdev_prop_set_string(armv7m, "cpu-type", s->cpu_type);
     qdev_prop_set_bit(armv7m, "enable-bitband", true);
+    qdev_connect_clock_in(armv7m, "cpuclk", s->sysclk);
+    qdev_connect_clock_in(armv7m, "refclk", s->refclk);
     object_property_set_link(OBJECT(&s->armv7m), "memory",
                              OBJECT(get_system_memory()), &error_abort);
     if (!sysbus_realize(SYS_BUS_DEVICE(&s->armv7m), errp)) {
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 39/51] hw/arm/stm32f405: Wire up sysclk and refclk
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (37 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 38/51] hw/arm/stm32f205: " Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 40/51] hw/arm/stm32vldiscovery: Delete trailing blank line Peter Maydell
                   ` (12 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

Wire up the sysclk and refclk for the stm32f405 SoC.  This SoC always
runs the systick refclk at 1/8 the frequency of the main CPU clock,
so the board code only needs to provide a single sysclk clock.

Because there is only one board using this SoC, we convert the SoC
and the board together, rather than splitting it into "add clock to
SoC; connect clock in board; add error check in SoC code that clock
is wired up".

When the systick device starts honouring its clock inputs, this will
fix an emulation inaccuracy in the netduinoplus2 board where the
systick reference clock was running at 1MHz rather than 21MHz.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Alexandre Iooss <erdnaxe@crans.org>
Reviewed-by: Luc Michel <luc@lmichel.fr>
Message-id: 20210812093356.1946-14-peter.maydell@linaro.org
---
 include/hw/arm/stm32f405_soc.h |  3 +++
 hw/arm/netduinoplus2.c         | 12 +++++++-----
 hw/arm/stm32f405_soc.c         | 30 ++++++++++++++++++++++++++++++
 3 files changed, 40 insertions(+), 5 deletions(-)

diff --git a/include/hw/arm/stm32f405_soc.h b/include/hw/arm/stm32f405_soc.h
index 347105e709b..5bb0c8d5697 100644
--- a/include/hw/arm/stm32f405_soc.h
+++ b/include/hw/arm/stm32f405_soc.h
@@ -68,6 +68,9 @@ struct STM32F405State {
     MemoryRegion sram;
     MemoryRegion flash;
     MemoryRegion flash_alias;
+
+    Clock *sysclk;
+    Clock *refclk;
 };
 
 #endif
diff --git a/hw/arm/netduinoplus2.c b/hw/arm/netduinoplus2.c
index d3ad7a2b675..a5a8999cc8c 100644
--- a/hw/arm/netduinoplus2.c
+++ b/hw/arm/netduinoplus2.c
@@ -26,6 +26,7 @@
 #include "qapi/error.h"
 #include "hw/boards.h"
 #include "hw/qdev-properties.h"
+#include "hw/qdev-clock.h"
 #include "qemu/error-report.h"
 #include "hw/arm/stm32f405_soc.h"
 #include "hw/arm/boot.h"
@@ -36,16 +37,17 @@
 static void netduinoplus2_init(MachineState *machine)
 {
     DeviceState *dev;
+    Clock *sysclk;
 
-    /*
-     * TODO: ideally we would model the SoC RCC and let it handle
-     * system_clock_scale, including its ability to define different
-     * possible SYSCLK sources.
-     */
     system_clock_scale = NANOSECONDS_PER_SECOND / SYSCLK_FRQ;
 
+    /* This clock doesn't need migration because it is fixed-frequency */
+    sysclk = clock_new(OBJECT(machine), "SYSCLK");
+    clock_set_hz(sysclk, SYSCLK_FRQ);
+
     dev = qdev_new(TYPE_STM32F405_SOC);
     qdev_prop_set_string(dev, "cpu-type", ARM_CPU_TYPE_NAME("cortex-m4"));
+    qdev_connect_clock_in(dev, "sysclk", sysclk);
     sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
 
     armv7m_load_kernel(ARM_CPU(first_cpu),
diff --git a/hw/arm/stm32f405_soc.c b/hw/arm/stm32f405_soc.c
index cb04c111987..0019b7f4785 100644
--- a/hw/arm/stm32f405_soc.c
+++ b/hw/arm/stm32f405_soc.c
@@ -28,6 +28,7 @@
 #include "exec/address-spaces.h"
 #include "sysemu/sysemu.h"
 #include "hw/arm/stm32f405_soc.h"
+#include "hw/qdev-clock.h"
 #include "hw/misc/unimp.h"
 
 #define SYSCFG_ADD                     0x40013800
@@ -80,6 +81,9 @@ static void stm32f405_soc_initfn(Object *obj)
     }
 
     object_initialize_child(obj, "exti", &s->exti, TYPE_STM32F4XX_EXTI);
+
+    s->sysclk = qdev_init_clock_in(DEVICE(s), "sysclk", NULL, NULL, 0);
+    s->refclk = qdev_init_clock_in(DEVICE(s), "refclk", NULL, NULL, 0);
 }
 
 static void stm32f405_soc_realize(DeviceState *dev_soc, Error **errp)
@@ -91,6 +95,30 @@ static void stm32f405_soc_realize(DeviceState *dev_soc, Error **errp)
     Error *err = NULL;
     int i;
 
+    /*
+     * We use s->refclk internally and only define it with qdev_init_clock_in()
+     * so it is correctly parented and not leaked on an init/deinit; it is not
+     * intended as an externally exposed clock.
+     */
+    if (clock_has_source(s->refclk)) {
+        error_setg(errp, "refclk clock must not be wired up by the board code");
+        return;
+    }
+
+    if (!clock_has_source(s->sysclk)) {
+        error_setg(errp, "sysclk clock must be wired up by the board code");
+        return;
+    }
+
+    /*
+     * TODO: ideally we should model the SoC RCC and its ability to
+     * change the sysclk frequency and define different sysclk sources.
+     */
+
+    /* The refclk always runs at frequency HCLK / 8 */
+    clock_set_mul_div(s->refclk, 8, 1);
+    clock_set_source(s->refclk, s->sysclk);
+
     memory_region_init_rom(&s->flash, OBJECT(dev_soc), "STM32F405.flash",
                            FLASH_SIZE, &err);
     if (err != NULL) {
@@ -116,6 +144,8 @@ static void stm32f405_soc_realize(DeviceState *dev_soc, Error **errp)
     qdev_prop_set_uint32(armv7m, "num-irq", 96);
     qdev_prop_set_string(armv7m, "cpu-type", s->cpu_type);
     qdev_prop_set_bit(armv7m, "enable-bitband", true);
+    qdev_connect_clock_in(armv7m, "cpuclk", s->sysclk);
+    qdev_connect_clock_in(armv7m, "refclk", s->refclk);
     object_property_set_link(OBJECT(&s->armv7m), "memory",
                              OBJECT(system_memory), &error_abort);
     if (!sysbus_realize(SYS_BUS_DEVICE(&s->armv7m), errp)) {
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 40/51] hw/arm/stm32vldiscovery: Delete trailing blank line
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (38 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 39/51] hw/arm/stm32f405: " Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 41/51] hw/arm/nrf51: Wire up sysclk Peter Maydell
                   ` (11 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

Delete the trailing blank line at the end of the source file.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alexandre Iooss <erdnaxe@crans.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Luc Michel <luc@lmichel.fr>
Message-id: 20210812093356.1946-15-peter.maydell@linaro.org
---
 hw/arm/stm32vldiscovery.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/hw/arm/stm32vldiscovery.c b/hw/arm/stm32vldiscovery.c
index 07e401a818d..9b79004703b 100644
--- a/hw/arm/stm32vldiscovery.c
+++ b/hw/arm/stm32vldiscovery.c
@@ -65,4 +65,3 @@ static void stm32vldiscovery_machine_init(MachineClass *mc)
 }
 
 DEFINE_MACHINE("stm32vldiscovery", stm32vldiscovery_machine_init)
-
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 41/51] hw/arm/nrf51: Wire up sysclk
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (39 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 40/51] hw/arm/stm32vldiscovery: Delete trailing blank line Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 42/51] hw/arm/stellaris: split stellaris_sys_init() Peter Maydell
                   ` (10 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

Wire up the sysclk input to the armv7m object.

Strictly this SoC should not have a systick device at all, but our
armv7m container object doesn't currently support disabling the
systick device.  For the moment, add a TODO comment, but note that
this is why we aren't wiring up a refclk (no need for one).

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alexandre Iooss <erdnaxe@crans.org>
Message-id: 20210812093356.1946-16-peter.maydell@linaro.org
---
 include/hw/arm/nrf51_soc.h |  2 ++
 hw/arm/nrf51_soc.c         | 20 ++++++++++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/include/hw/arm/nrf51_soc.h b/include/hw/arm/nrf51_soc.h
index f8a6725b775..e52a56e75e0 100644
--- a/include/hw/arm/nrf51_soc.h
+++ b/include/hw/arm/nrf51_soc.h
@@ -17,6 +17,7 @@
 #include "hw/gpio/nrf51_gpio.h"
 #include "hw/nvram/nrf51_nvm.h"
 #include "hw/timer/nrf51_timer.h"
+#include "hw/clock.h"
 #include "qom/object.h"
 
 #define TYPE_NRF51_SOC "nrf51-soc"
@@ -50,6 +51,7 @@ struct NRF51State {
 
     MemoryRegion container;
 
+    Clock *sysclk;
 };
 
 #endif
diff --git a/hw/arm/nrf51_soc.c b/hw/arm/nrf51_soc.c
index 9407c2f268b..e3e849a32b1 100644
--- a/hw/arm/nrf51_soc.c
+++ b/hw/arm/nrf51_soc.c
@@ -12,6 +12,7 @@
 #include "qapi/error.h"
 #include "hw/arm/boot.h"
 #include "hw/sysbus.h"
+#include "hw/qdev-clock.h"
 #include "hw/misc/unimp.h"
 #include "qemu/log.h"
 
@@ -66,6 +67,23 @@ static void nrf51_soc_realize(DeviceState *dev_soc, Error **errp)
         return;
     }
 
+    /*
+     * HCLK on this SoC is fixed, so we set up sysclk ourselves and
+     * the board shouldn't connect it.
+     */
+    if (clock_has_source(s->sysclk)) {
+        error_setg(errp, "sysclk clock must not be wired up by the board code");
+        return;
+    }
+    /* This clock doesn't need migration because it is fixed-frequency */
+    clock_set_hz(s->sysclk, HCLK_FRQ);
+    qdev_connect_clock_in(DEVICE(&s->cpu), "cpuclk", s->sysclk);
+    /*
+     * This SoC has no systick device, so don't connect refclk.
+     * TODO: model the lack of systick (currently the armv7m object
+     * will always provide one).
+     */
+
     system_clock_scale = NANOSECONDS_PER_SECOND / HCLK_FRQ;
 
     object_property_set_link(OBJECT(&s->cpu), "memory", OBJECT(&s->container),
@@ -191,6 +209,8 @@ static void nrf51_soc_init(Object *obj)
                                 TYPE_NRF51_TIMER);
 
     }
+
+    s->sysclk = qdev_init_clock_in(DEVICE(s), "sysclk", NULL, NULL, 0);
 }
 
 static Property nrf51_soc_properties[] = {
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 42/51] hw/arm/stellaris: split stellaris_sys_init()
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (40 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 41/51] hw/arm/nrf51: Wire up sysclk Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 43/51] hw/arm/stellaris: Wire sysclk up to armv7m Peter Maydell
                   ` (9 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

Currently the stellaris_sys_init() function creates the
TYPE_STELLARIS_SYS object, sets its properties, realizes it, maps its
MMIO region and connects its IRQ.  In order to support wiring the
sysclk up to the armv7m object, we need to split this function apart,
because to connect the clock output of the STELLARIS_SYS object to
the armv7m object we need to create the STELLARIS_SYS object before
the armv7m object, but we can't wire up the IRQ until after we've
created the armv7m object.

Remove the stellaris_sys_init() function, and instead put the
create/configure/realize parts before we create the armv7m object and
the mmio/irq connection parts afterwards.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alexandre Iooss <erdnaxe@crans.org>
Message-id: 20210812093356.1946-17-peter.maydell@linaro.org
---
 hw/arm/stellaris.c | 56 +++++++++++++++++++++-------------------------
 1 file changed, 25 insertions(+), 31 deletions(-)

diff --git a/hw/arm/stellaris.c b/hw/arm/stellaris.c
index ad48cf26058..bf24abd44fd 100644
--- a/hw/arm/stellaris.c
+++ b/hw/arm/stellaris.c
@@ -755,33 +755,6 @@ static void stellaris_sys_instance_init(Object *obj)
     s->sysclk = qdev_init_clock_out(DEVICE(s), "SYSCLK");
 }
 
-static DeviceState *stellaris_sys_init(uint32_t base, qemu_irq irq,
-                                       stellaris_board_info *board,
-                                       uint8_t *macaddr)
-{
-    DeviceState *dev = qdev_new(TYPE_STELLARIS_SYS);
-    SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
-
-    /* Most devices come preprogrammed with a MAC address in the user data. */
-    qdev_prop_set_uint32(dev, "user0",
-                         macaddr[0] | (macaddr[1] << 8) | (macaddr[2] << 16));
-    qdev_prop_set_uint32(dev, "user1",
-                         macaddr[3] | (macaddr[4] << 8) | (macaddr[5] << 16));
-    qdev_prop_set_uint32(dev, "did0", board->did0);
-    qdev_prop_set_uint32(dev, "did1", board->did1);
-    qdev_prop_set_uint32(dev, "dc0", board->dc0);
-    qdev_prop_set_uint32(dev, "dc1", board->dc1);
-    qdev_prop_set_uint32(dev, "dc2", board->dc2);
-    qdev_prop_set_uint32(dev, "dc3", board->dc3);
-    qdev_prop_set_uint32(dev, "dc4", board->dc4);
-
-    sysbus_realize_and_unref(sbd, &error_fatal);
-    sysbus_mmio_map(sbd, 0, base);
-    sysbus_connect_irq(sbd, 0, irq);
-
-    return dev;
-}
-
 /* I2C controller.  */
 
 #define TYPE_STELLARIS_I2C "stellaris-i2c"
@@ -1349,6 +1322,7 @@ static void stellaris_init(MachineState *ms, stellaris_board_info *board)
     DeviceState *ssys_dev;
     int i;
     int j;
+    uint8_t *macaddr;
 
     MemoryRegion *sram = g_new(MemoryRegion, 1);
     MemoryRegion *flash = g_new(MemoryRegion, 1);
@@ -1366,6 +1340,26 @@ static void stellaris_init(MachineState *ms, stellaris_board_info *board)
                            &error_fatal);
     memory_region_add_subregion(system_memory, 0x20000000, sram);
 
+    /*
+     * Create the system-registers object early, because we will
+     * need its sysclk output.
+     */
+    ssys_dev = qdev_new(TYPE_STELLARIS_SYS);
+    /* Most devices come preprogrammed with a MAC address in the user data. */
+    macaddr = nd_table[0].macaddr.a;
+    qdev_prop_set_uint32(ssys_dev, "user0",
+                         macaddr[0] | (macaddr[1] << 8) | (macaddr[2] << 16));
+    qdev_prop_set_uint32(ssys_dev, "user1",
+                         macaddr[3] | (macaddr[4] << 8) | (macaddr[5] << 16));
+    qdev_prop_set_uint32(ssys_dev, "did0", board->did0);
+    qdev_prop_set_uint32(ssys_dev, "did1", board->did1);
+    qdev_prop_set_uint32(ssys_dev, "dc0", board->dc0);
+    qdev_prop_set_uint32(ssys_dev, "dc1", board->dc1);
+    qdev_prop_set_uint32(ssys_dev, "dc2", board->dc2);
+    qdev_prop_set_uint32(ssys_dev, "dc3", board->dc3);
+    qdev_prop_set_uint32(ssys_dev, "dc4", board->dc4);
+    sysbus_realize_and_unref(SYS_BUS_DEVICE(ssys_dev), &error_fatal);
+
     nvic = qdev_new(TYPE_ARMV7M);
     qdev_prop_set_uint32(nvic, "num-irq", NUM_IRQ_LINES);
     qdev_prop_set_string(nvic, "cpu-type", ms->cpu_type);
@@ -1375,6 +1369,10 @@ static void stellaris_init(MachineState *ms, stellaris_board_info *board)
     /* This will exit with an error if the user passed us a bad cpu_type */
     sysbus_realize_and_unref(SYS_BUS_DEVICE(nvic), &error_fatal);
 
+    /* Now we can wire up the IRQ and MMIO of the system registers */
+    sysbus_mmio_map(SYS_BUS_DEVICE(ssys_dev), 0, 0x400fe000);
+    sysbus_connect_irq(SYS_BUS_DEVICE(ssys_dev), 0, qdev_get_gpio_in(nvic, 28));
+
     if (board->dc1 & (1 << 16)) {
         dev = sysbus_create_varargs(TYPE_STELLARIS_ADC, 0x40038000,
                                     qdev_get_gpio_in(nvic, 14),
@@ -1397,10 +1395,6 @@ static void stellaris_init(MachineState *ms, stellaris_board_info *board)
         }
     }
 
-    ssys_dev = stellaris_sys_init(0x400fe000, qdev_get_gpio_in(nvic, 28),
-                                  board, nd_table[0].macaddr.a);
-
-
     if (board->dc1 & (1 << 3)) { /* watchdog present */
         dev = qdev_new(TYPE_LUMINARY_WATCHDOG);
 
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 43/51] hw/arm/stellaris: Wire sysclk up to armv7m
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (41 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 42/51] hw/arm/stellaris: split stellaris_sys_init() Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 44/51] hw/arm/msf2_soc: Don't allocate separate MemoryRegions Peter Maydell
                   ` (8 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

Connect the sysclk to the armv7m object.  This board's SoC does not
connect up the systick reference clock, so we don't need to connect a
refclk.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alexandre Iooss <erdnaxe@crans.org>
Message-id: 20210812093356.1946-18-peter.maydell@linaro.org
---
 hw/arm/stellaris.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/hw/arm/stellaris.c b/hw/arm/stellaris.c
index bf24abd44fd..8c8bd39e2fe 100644
--- a/hw/arm/stellaris.c
+++ b/hw/arm/stellaris.c
@@ -1322,7 +1322,7 @@ static void stellaris_init(MachineState *ms, stellaris_board_info *board)
     DeviceState *ssys_dev;
     int i;
     int j;
-    uint8_t *macaddr;
+    const uint8_t *macaddr;
 
     MemoryRegion *sram = g_new(MemoryRegion, 1);
     MemoryRegion *flash = g_new(MemoryRegion, 1);
@@ -1364,6 +1364,9 @@ static void stellaris_init(MachineState *ms, stellaris_board_info *board)
     qdev_prop_set_uint32(nvic, "num-irq", NUM_IRQ_LINES);
     qdev_prop_set_string(nvic, "cpu-type", ms->cpu_type);
     qdev_prop_set_bit(nvic, "enable-bitband", true);
+    qdev_connect_clock_in(nvic, "cpuclk",
+                          qdev_get_clock_out(ssys_dev, "SYSCLK"));
+    /* This SoC does not connect the systick reference clock */
     object_property_set_link(OBJECT(nvic), "memory",
                              OBJECT(get_system_memory()), &error_abort);
     /* This will exit with an error if the user passed us a bad cpu_type */
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 44/51] hw/arm/msf2_soc: Don't allocate separate MemoryRegions
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (42 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 43/51] hw/arm/stellaris: Wire sysclk up to armv7m Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 45/51] hw/arm/msf2: Use Clock input to MSF2_SOC instead of m3clk property Peter Maydell
                   ` (7 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

In the realize method of the msf2-soc SoC object, we call g_new() to
create new MemoryRegion objects for the nvm, nvm_alias, and sram.
This is unnecessary; make these MemoryRegions member fields of the
device state struct instead.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alexandre Iooss <erdnaxe@crans.org>
Message-id: 20210812093356.1946-19-peter.maydell@linaro.org
---
 include/hw/arm/msf2-soc.h |  4 ++++
 hw/arm/msf2-soc.c         | 17 +++++++----------
 2 files changed, 11 insertions(+), 10 deletions(-)

diff --git a/include/hw/arm/msf2-soc.h b/include/hw/arm/msf2-soc.h
index d4061846855..38e10ce20aa 100644
--- a/include/hw/arm/msf2-soc.h
+++ b/include/hw/arm/msf2-soc.h
@@ -65,6 +65,10 @@ struct MSF2State {
     MSSTimerState timer;
     MSSSpiState spi[MSF2_NUM_SPIS];
     MSF2EmacState emac;
+
+    MemoryRegion nvm;
+    MemoryRegion nvm_alias;
+    MemoryRegion sram;
 };
 
 #endif
diff --git a/hw/arm/msf2-soc.c b/hw/arm/msf2-soc.c
index 5cfe7caf834..f36788054b3 100644
--- a/hw/arm/msf2-soc.c
+++ b/hw/arm/msf2-soc.c
@@ -83,11 +83,8 @@ static void m2sxxx_soc_realize(DeviceState *dev_soc, Error **errp)
     int i;
 
     MemoryRegion *system_memory = get_system_memory();
-    MemoryRegion *nvm = g_new(MemoryRegion, 1);
-    MemoryRegion *nvm_alias = g_new(MemoryRegion, 1);
-    MemoryRegion *sram = g_new(MemoryRegion, 1);
 
-    memory_region_init_rom(nvm, OBJECT(dev_soc), "MSF2.eNVM", s->envm_size,
+    memory_region_init_rom(&s->nvm, OBJECT(dev_soc), "MSF2.eNVM", s->envm_size,
                            &error_fatal);
     /*
      * On power-on, the eNVM region 0x60000000 is automatically
@@ -95,15 +92,15 @@ static void m2sxxx_soc_realize(DeviceState *dev_soc, Error **errp)
      * start address (0x0). We do not support remapping other eNVM,
      * eSRAM and DDR regions by guest(via Sysreg) currently.
      */
-    memory_region_init_alias(nvm_alias, OBJECT(dev_soc), "MSF2.eNVM", nvm, 0,
-                             s->envm_size);
+    memory_region_init_alias(&s->nvm_alias, OBJECT(dev_soc), "MSF2.eNVM",
+                             &s->nvm, 0, s->envm_size);
 
-    memory_region_add_subregion(system_memory, ENVM_BASE_ADDRESS, nvm);
-    memory_region_add_subregion(system_memory, 0, nvm_alias);
+    memory_region_add_subregion(system_memory, ENVM_BASE_ADDRESS, &s->nvm);
+    memory_region_add_subregion(system_memory, 0, &s->nvm_alias);
 
-    memory_region_init_ram(sram, NULL, "MSF2.eSRAM", s->esram_size,
+    memory_region_init_ram(&s->sram, NULL, "MSF2.eSRAM", s->esram_size,
                            &error_fatal);
-    memory_region_add_subregion(system_memory, SRAM_BASE_ADDRESS, sram);
+    memory_region_add_subregion(system_memory, SRAM_BASE_ADDRESS, &s->sram);
 
     armv7m = DEVICE(&s->armv7m);
     qdev_prop_set_uint32(armv7m, "num-irq", 81);
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 45/51] hw/arm/msf2: Use Clock input to MSF2_SOC instead of m3clk property
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (43 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 44/51] hw/arm/msf2_soc: Don't allocate separate MemoryRegions Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 46/51] hw/arm/msf2-soc: Wire up refclk Peter Maydell
                   ` (6 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

Instead of passing the MSF2 SoC an integer property specifying the
CPU clock rate, pass it a Clock instead.  This lets us wire that
clock up to the armv7m object.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alexandre Iooss <erdnaxe@crans.org>
Message-id: 20210812093356.1946-20-peter.maydell@linaro.org
---
 include/hw/arm/msf2-soc.h |  3 ++-
 hw/arm/msf2-soc.c         | 28 +++++++++++++++++-----------
 hw/arm/msf2-som.c         |  7 ++++++-
 3 files changed, 25 insertions(+), 13 deletions(-)

diff --git a/include/hw/arm/msf2-soc.h b/include/hw/arm/msf2-soc.h
index 38e10ce20aa..01f904cec47 100644
--- a/include/hw/arm/msf2-soc.h
+++ b/include/hw/arm/msf2-soc.h
@@ -30,6 +30,7 @@
 #include "hw/misc/msf2-sysreg.h"
 #include "hw/ssi/mss-spi.h"
 #include "hw/net/msf2-emac.h"
+#include "hw/clock.h"
 #include "qom/object.h"
 
 #define TYPE_MSF2_SOC     "msf2-soc"
@@ -57,7 +58,7 @@ struct MSF2State {
     uint64_t envm_size;
     uint64_t esram_size;
 
-    uint32_t m3clk;
+    Clock *m3clk;
     uint8_t apb0div;
     uint8_t apb1div;
 
diff --git a/hw/arm/msf2-soc.c b/hw/arm/msf2-soc.c
index f36788054b3..0a1e594aee6 100644
--- a/hw/arm/msf2-soc.c
+++ b/hw/arm/msf2-soc.c
@@ -29,6 +29,7 @@
 #include "hw/char/serial.h"
 #include "hw/arm/msf2-soc.h"
 #include "hw/misc/unimp.h"
+#include "hw/qdev-clock.h"
 #include "sysemu/sysemu.h"
 
 #define MSF2_TIMER_BASE       0x40004000
@@ -73,6 +74,8 @@ static void m2sxxx_soc_initfn(Object *obj)
     }
 
     object_initialize_child(obj, "emac", &s->emac, TYPE_MSS_EMAC);
+
+    s->m3clk = qdev_init_clock_in(DEVICE(obj), "m3clk", NULL, NULL, 0);
 }
 
 static void m2sxxx_soc_realize(DeviceState *dev_soc, Error **errp)
@@ -84,6 +87,11 @@ static void m2sxxx_soc_realize(DeviceState *dev_soc, Error **errp)
 
     MemoryRegion *system_memory = get_system_memory();
 
+    if (!clock_has_source(s->m3clk)) {
+        error_setg(errp, "m3clk must be wired up by the board code");
+        return;
+    }
+
     memory_region_init_rom(&s->nvm, OBJECT(dev_soc), "MSF2.eNVM", s->envm_size,
                            &error_fatal);
     /*
@@ -106,19 +114,14 @@ static void m2sxxx_soc_realize(DeviceState *dev_soc, Error **errp)
     qdev_prop_set_uint32(armv7m, "num-irq", 81);
     qdev_prop_set_string(armv7m, "cpu-type", s->cpu_type);
     qdev_prop_set_bit(armv7m, "enable-bitband", true);
+    qdev_connect_clock_in(armv7m, "cpuclk", s->m3clk);
     object_property_set_link(OBJECT(&s->armv7m), "memory",
                              OBJECT(get_system_memory()), &error_abort);
     if (!sysbus_realize(SYS_BUS_DEVICE(&s->armv7m), errp)) {
         return;
     }
 
-    if (!s->m3clk) {
-        error_setg(errp, "Invalid m3clk value");
-        error_append_hint(errp, "m3clk can not be zero\n");
-        return;
-    }
-
-    system_clock_scale = NANOSECONDS_PER_SECOND / s->m3clk;
+    system_clock_scale = clock_ticks_to_ns(s->m3clk, 1);
 
     for (i = 0; i < MSF2_NUM_UARTS; i++) {
         if (serial_hd(i)) {
@@ -129,8 +132,13 @@ static void m2sxxx_soc_realize(DeviceState *dev_soc, Error **errp)
     }
 
     dev = DEVICE(&s->timer);
-    /* APB0 clock is the timer input clock */
-    qdev_prop_set_uint32(dev, "clock-frequency", s->m3clk / s->apb0div);
+    /*
+     * APB0 clock is the timer input clock.
+     * TODO: ideally the MSF2 timer device should use a Clock rather than a
+     * clock-frequency integer property.
+     */
+    qdev_prop_set_uint32(dev, "clock-frequency",
+                         clock_get_hz(s->m3clk) / s->apb0div);
     if (!sysbus_realize(SYS_BUS_DEVICE(&s->timer), errp)) {
         return;
     }
@@ -207,8 +215,6 @@ static Property m2sxxx_soc_properties[] = {
     DEFINE_PROP_UINT64("eNVM-size", MSF2State, envm_size, MSF2_ENVM_MAX_SIZE),
     DEFINE_PROP_UINT64("eSRAM-size", MSF2State, esram_size,
                         MSF2_ESRAM_MAX_SIZE),
-    /* Libero GUI shows 100Mhz as default for clocks */
-    DEFINE_PROP_UINT32("m3clk", MSF2State, m3clk, 100 * 1000000),
     /* default divisors in Libero GUI */
     DEFINE_PROP_UINT8("apb0div", MSF2State, apb0div, 2),
     DEFINE_PROP_UINT8("apb1div", MSF2State, apb1div, 2),
diff --git a/hw/arm/msf2-som.c b/hw/arm/msf2-som.c
index 343ec977c07..396e8b99138 100644
--- a/hw/arm/msf2-som.c
+++ b/hw/arm/msf2-som.c
@@ -29,6 +29,7 @@
 #include "hw/boards.h"
 #include "hw/qdev-properties.h"
 #include "hw/arm/boot.h"
+#include "hw/qdev-clock.h"
 #include "exec/address-spaces.h"
 #include "hw/arm/msf2-soc.h"
 
@@ -49,6 +50,7 @@ static void emcraft_sf2_s2s010_init(MachineState *machine)
     BusState *spi_bus;
     MemoryRegion *sysmem = get_system_memory();
     MemoryRegion *ddr = g_new(MemoryRegion, 1);
+    Clock *m3clk;
 
     if (strcmp(machine->cpu_type, mc->default_cpu_type) != 0) {
         error_report("This board can only be used with CPU %s",
@@ -72,7 +74,10 @@ static void emcraft_sf2_s2s010_init(MachineState *machine)
      * in Libero. CPU clock is divided by APB0 and APB1 divisors for
      * peripherals. Emcraft's SoM kit comes with these settings by default.
      */
-    qdev_prop_set_uint32(dev, "m3clk", 142 * 1000000);
+    /* This clock doesn't need migration because it is fixed-frequency */
+    m3clk = clock_new(OBJECT(machine), "m3clk");
+    clock_set_hz(m3clk, 142 * 1000000);
+    qdev_connect_clock_in(dev, "m3clk", m3clk);
     qdev_prop_set_uint32(dev, "apb0div", 2);
     qdev_prop_set_uint32(dev, "apb1div", 2);
 
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 46/51] hw/arm/msf2-soc: Wire up refclk
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (44 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 45/51] hw/arm/msf2: Use Clock input to MSF2_SOC instead of m3clk property Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 47/51] hw/timer/armv7m_systick: Use clock inputs instead of system_clock_scale Peter Maydell
                   ` (5 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

Wire up the refclk for the msf2 SoC.  This SoC runs the refclk at a
frequency which is programmably either /4, /8, /16 or /32 of the main
CPU clock.  We don't currently model the register which allows the
guest to set the divisor, so implement the refclk as a fixed /32 of
the CPU clock (which is the value of the divisor at reset).

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Damien Hedde <damien.hedde@greensocs.com>
Message-id: 20210812093356.1946-21-peter.maydell@linaro.org
---
 include/hw/arm/msf2-soc.h |  1 +
 hw/arm/msf2-soc.c         | 23 +++++++++++++++++++++++
 2 files changed, 24 insertions(+)

diff --git a/include/hw/arm/msf2-soc.h b/include/hw/arm/msf2-soc.h
index 01f904cec47..ce417a6266a 100644
--- a/include/hw/arm/msf2-soc.h
+++ b/include/hw/arm/msf2-soc.h
@@ -59,6 +59,7 @@ struct MSF2State {
     uint64_t esram_size;
 
     Clock *m3clk;
+    Clock *refclk;
     uint8_t apb0div;
     uint8_t apb1div;
 
diff --git a/hw/arm/msf2-soc.c b/hw/arm/msf2-soc.c
index 0a1e594aee6..dbc6d936a76 100644
--- a/hw/arm/msf2-soc.c
+++ b/hw/arm/msf2-soc.c
@@ -76,6 +76,7 @@ static void m2sxxx_soc_initfn(Object *obj)
     object_initialize_child(obj, "emac", &s->emac, TYPE_MSS_EMAC);
 
     s->m3clk = qdev_init_clock_in(DEVICE(obj), "m3clk", NULL, NULL, 0);
+    s->refclk = qdev_init_clock_in(DEVICE(obj), "refclk", NULL, NULL, 0);
 }
 
 static void m2sxxx_soc_realize(DeviceState *dev_soc, Error **errp)
@@ -92,6 +93,27 @@ static void m2sxxx_soc_realize(DeviceState *dev_soc, Error **errp)
         return;
     }
 
+    /*
+     * We use s->refclk internally and only define it with qdev_init_clock_in()
+     * so it is correctly parented and not leaked on an init/deinit; it is not
+     * intended as an externally exposed clock.
+     */
+    if (clock_has_source(s->refclk)) {
+        error_setg(errp, "refclk must not be wired up by the board code");
+        return;
+    }
+
+    /*
+     * TODO: ideally we should model the SoC SYSTICK_CR register at 0xe0042038,
+     * which allows the guest to program the divisor between the m3clk and
+     * the systick refclk to either /4, /8, /16 or /32, as well as setting
+     * the value the guest can read in the STCALIB register. Currently we
+     * implement the divisor as a fixed /32, which matches the reset value
+     * of SYSTICK_CR.
+     */
+    clock_set_mul_div(s->refclk, 32, 1);
+    clock_set_source(s->refclk, s->m3clk);
+
     memory_region_init_rom(&s->nvm, OBJECT(dev_soc), "MSF2.eNVM", s->envm_size,
                            &error_fatal);
     /*
@@ -115,6 +137,7 @@ static void m2sxxx_soc_realize(DeviceState *dev_soc, Error **errp)
     qdev_prop_set_string(armv7m, "cpu-type", s->cpu_type);
     qdev_prop_set_bit(armv7m, "enable-bitband", true);
     qdev_connect_clock_in(armv7m, "cpuclk", s->m3clk);
+    qdev_connect_clock_in(armv7m, "refclk", s->refclk);
     object_property_set_link(OBJECT(&s->armv7m), "memory",
                              OBJECT(get_system_memory()), &error_abort);
     if (!sysbus_realize(SYS_BUS_DEVICE(&s->armv7m), errp)) {
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 47/51] hw/timer/armv7m_systick: Use clock inputs instead of system_clock_scale
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (45 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 46/51] hw/arm/msf2-soc: Wire up refclk Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 48/51] hw/arm/stellaris: Fix code style issues in GPTM code Peter Maydell
                   ` (4 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

Now that all users of the systick devices wire up the clock inputs,
use those instead of the system_clock_scale and the hardwired 1MHz
value for the reference clock.

This will fix various board models where we were incorrectly
providing a 1MHz reference clock instead of some other value or
instead of providing no reference clock at all.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Damien Hedde <damien.hedde@greensocs.com>
Message-id: 20210812093356.1946-22-peter.maydell@linaro.org
---
 hw/timer/armv7m_systick.c | 112 ++++++++++++++++++++++++++++----------
 1 file changed, 84 insertions(+), 28 deletions(-)

diff --git a/hw/timer/armv7m_systick.c b/hw/timer/armv7m_systick.c
index e43f74114e8..21f6d0fd24f 100644
--- a/hw/timer/armv7m_systick.c
+++ b/hw/timer/armv7m_systick.c
@@ -18,25 +18,30 @@
 #include "qemu/timer.h"
 #include "qemu/log.h"
 #include "qemu/module.h"
+#include "qapi/error.h"
 #include "trace.h"
 
-/* qemu timers run at 1GHz.   We want something closer to 1MHz.  */
-#define SYSTICK_SCALE 1000ULL
-
 #define SYSTICK_ENABLE    (1 << 0)
 #define SYSTICK_TICKINT   (1 << 1)
 #define SYSTICK_CLKSOURCE (1 << 2)
 #define SYSTICK_COUNTFLAG (1 << 16)
 
+#define SYSCALIB_NOREF (1U << 31)
+#define SYSCALIB_SKEW (1U << 30)
+#define SYSCALIB_TENMS ((1U << 24) - 1)
+
 int system_clock_scale;
 
-/* Conversion factor from qemu timer to SysTick frequencies.  */
-static inline int64_t systick_scale(SysTickState *s)
+static void systick_set_period_from_clock(SysTickState *s)
 {
+    /*
+     * Set the ptimer period from whichever clock is selected.
+     * Must be called from within a ptimer transaction block.
+     */
     if (s->control & SYSTICK_CLKSOURCE) {
-        return system_clock_scale;
+        ptimer_set_period_from_clock(s->ptimer, s->cpuclk, 1);
     } else {
-        return 1000;
+        ptimer_set_period_from_clock(s->ptimer, s->refclk, 1);
     }
 }
 
@@ -83,7 +88,28 @@ static MemTxResult systick_read(void *opaque, hwaddr addr, uint64_t *data,
         val = ptimer_get_count(s->ptimer);
         break;
     case 0xc: /* SysTick Calibration Value.  */
-        val = 10000;
+        /*
+         * In real hardware it is possible to make this register report
+         * a different value from what the reference clock is actually
+         * running at. We don't model that (which usually happens due
+         * to integration errors in the real hardware) and instead always
+         * report the theoretical correct value as described in the
+         * knowledgebase article at
+         * https://developer.arm.com/documentation/ka001325/latest
+         * If necessary, we could implement an extra QOM property on this
+         * device to force the STCALIB value to something different from
+         * the "correct" value.
+         */
+        if (!clock_has_source(s->refclk)) {
+            val = SYSCALIB_NOREF;
+            break;
+        }
+        val = clock_ns_to_ticks(s->refclk, 10 * SCALE_MS) - 1;
+        val &= SYSCALIB_TENMS;
+        if (clock_ticks_to_ns(s->refclk, val + 1) != 10 * SCALE_MS) {
+            /* report that tick count does not yield exactly 10ms */
+            val |= SYSCALIB_SKEW;
+        }
         break;
     default:
         val = 0;
@@ -115,6 +141,11 @@ static MemTxResult systick_write(void *opaque, hwaddr addr,
     {
         uint32_t oldval;
 
+        if (!clock_has_source(s->refclk)) {
+            /* This bit is always 1 if there is no external refclk */
+            value |= SYSTICK_CLKSOURCE;
+        }
+
         ptimer_transaction_begin(s->ptimer);
         oldval = s->control;
         s->control &= 0xfffffff8;
@@ -122,19 +153,14 @@ static MemTxResult systick_write(void *opaque, hwaddr addr,
 
         if ((oldval ^ value) & SYSTICK_ENABLE) {
             if (value & SYSTICK_ENABLE) {
-                /*
-                 * Always reload the period in case board code has
-                 * changed system_clock_scale. If we ever replace that
-                 * global with a more sensible API then we might be able
-                 * to set the period only when it actually changes.
-                 */
-                ptimer_set_period(s->ptimer, systick_scale(s));
                 ptimer_run(s->ptimer, 0);
             } else {
                 ptimer_stop(s->ptimer);
             }
-        } else if ((oldval ^ value) & SYSTICK_CLKSOURCE) {
-            ptimer_set_period(s->ptimer, systick_scale(s));
+        }
+
+        if ((oldval ^ value) & SYSTICK_CLKSOURCE) {
+            systick_set_period_from_clock(s);
         }
         ptimer_transaction_commit(s->ptimer);
         break;
@@ -177,20 +203,42 @@ static void systick_reset(DeviceState *dev)
 {
     SysTickState *s = SYSTICK(dev);
 
-    /*
-     * Forgetting to set system_clock_scale is always a board code
-     * bug. We can't check this earlier because for some boards
-     * (like stellaris) it is not yet configured at the point where
-     * the systick device is realized.
-     */
-    assert(system_clock_scale != 0);
-
     ptimer_transaction_begin(s->ptimer);
     s->control = 0;
+    if (!clock_has_source(s->refclk)) {
+        /* This bit is always 1 if there is no external refclk */
+        s->control |= SYSTICK_CLKSOURCE;
+    }
     ptimer_stop(s->ptimer);
     ptimer_set_count(s->ptimer, 0);
     ptimer_set_limit(s->ptimer, 0, 0);
-    ptimer_set_period(s->ptimer, systick_scale(s));
+    systick_set_period_from_clock(s);
+    ptimer_transaction_commit(s->ptimer);
+}
+
+static void systick_cpuclk_update(void *opaque, ClockEvent event)
+{
+    SysTickState *s = SYSTICK(opaque);
+
+    if (!(s->control & SYSTICK_CLKSOURCE)) {
+        /* currently using refclk, we can ignore cpuclk changes */
+    }
+
+    ptimer_transaction_begin(s->ptimer);
+    ptimer_set_period_from_clock(s->ptimer, s->cpuclk, 1);
+    ptimer_transaction_commit(s->ptimer);
+}
+
+static void systick_refclk_update(void *opaque, ClockEvent event)
+{
+    SysTickState *s = SYSTICK(opaque);
+
+    if (s->control & SYSTICK_CLKSOURCE) {
+        /* currently using cpuclk, we can ignore refclk changes */
+    }
+
+    ptimer_transaction_begin(s->ptimer);
+    ptimer_set_period_from_clock(s->ptimer, s->refclk, 1);
     ptimer_transaction_commit(s->ptimer);
 }
 
@@ -203,8 +251,10 @@ static void systick_instance_init(Object *obj)
     sysbus_init_mmio(sbd, &s->iomem);
     sysbus_init_irq(sbd, &s->irq);
 
-    s->refclk = qdev_init_clock_in(DEVICE(obj), "refclk", NULL, NULL, 0);
-    s->cpuclk = qdev_init_clock_in(DEVICE(obj), "cpuclk", NULL, NULL, 0);
+    s->refclk = qdev_init_clock_in(DEVICE(obj), "refclk",
+                                   systick_refclk_update, s, ClockUpdate);
+    s->cpuclk = qdev_init_clock_in(DEVICE(obj), "cpuclk",
+                                   systick_cpuclk_update, s, ClockUpdate);
 }
 
 static void systick_realize(DeviceState *dev, Error **errp)
@@ -215,6 +265,12 @@ static void systick_realize(DeviceState *dev, Error **errp)
                             PTIMER_POLICY_NO_COUNTER_ROUND_DOWN |
                             PTIMER_POLICY_NO_IMMEDIATE_RELOAD |
                             PTIMER_POLICY_TRIGGER_ONLY_ON_DECREMENT);
+
+    if (!clock_has_source(s->cpuclk)) {
+        error_setg(errp, "systick: cpuclk must be connected");
+        return;
+    }
+    /* It's OK not to connect the refclk */
 }
 
 static const VMStateDescription vmstate_systick = {
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 48/51] hw/arm/stellaris: Fix code style issues in GPTM code
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (46 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 47/51] hw/timer/armv7m_systick: Use clock inputs instead of system_clock_scale Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 49/51] hw/arm/stellaris: Split stellaris-gptm into its own file Peter Maydell
                   ` (3 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

Fix the code style issues in the Stellaris general purpose timer
module code, so that when we move it to a different file in a
following patch checkpatch doesn't complain.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alexandre Iooss <erdnaxe@crans.org>
Message-id: 20210812093356.1946-23-peter.maydell@linaro.org
---
 hw/arm/stellaris.c | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/hw/arm/stellaris.c b/hw/arm/stellaris.c
index 8c8bd39e2fe..a32c567ce11 100644
--- a/hw/arm/stellaris.c
+++ b/hw/arm/stellaris.c
@@ -97,10 +97,11 @@ static void gptm_stop(gptm_state *s, int n)
 static void gptm_reload(gptm_state *s, int n, int reset)
 {
     int64_t tick;
-    if (reset)
+    if (reset) {
         tick = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
-    else
+    } else {
         tick = s->tick[n];
+    }
 
     if (s->config == 0) {
         /* 32-bit CountDown.  */
@@ -227,9 +228,11 @@ static void gptm_write(void *opaque, hwaddr offset,
     gptm_state *s = (gptm_state *)opaque;
     uint32_t oldval;
 
-    /* The timers should be disabled before changing the configuration.
-       We take advantage of this and defer everything until the timer
-       is enabled.  */
+    /*
+     * The timers should be disabled before changing the configuration.
+     * We take advantage of this and defer everything until the timer
+     * is enabled.
+     */
     switch (offset) {
     case 0x00: /* CFG */
         s->config = value;
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 49/51] hw/arm/stellaris: Split stellaris-gptm into its own file
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (47 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 48/51] hw/arm/stellaris: Fix code style issues in GPTM code Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 50/51] hw/timer/stellaris-gptm: Use Clock input instead of system_clock_scale Peter Maydell
                   ` (2 subsequent siblings)
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

The implementation of the Stellaris general purpose timer module
device stellaris-gptm is currently in the same source file as the
board model.  Split it out into its own source file in hw/timer.

Apart from the new file comment headers and the Kconfig and
meson.build changes, this is just code movement.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Damien Hedde <damien.hedde@greensocs.com>
Message-id: 20210812093356.1946-24-peter.maydell@linaro.org
---
 include/hw/timer/stellaris-gptm.h |  48 +++++
 hw/arm/stellaris.c                | 321 +-----------------------------
 hw/timer/stellaris-gptm.c         | 314 +++++++++++++++++++++++++++++
 hw/arm/Kconfig                    |   1 +
 hw/timer/Kconfig                  |   3 +
 hw/timer/meson.build              |   1 +
 6 files changed, 368 insertions(+), 320 deletions(-)
 create mode 100644 include/hw/timer/stellaris-gptm.h
 create mode 100644 hw/timer/stellaris-gptm.c

diff --git a/include/hw/timer/stellaris-gptm.h b/include/hw/timer/stellaris-gptm.h
new file mode 100644
index 00000000000..b8fa43c94bf
--- /dev/null
+++ b/include/hw/timer/stellaris-gptm.h
@@ -0,0 +1,48 @@
+/*
+ * Luminary Micro Stellaris General Purpose Timer Module
+ *
+ * Copyright (c) 2006 CodeSourcery.
+ * Written by Paul Brook
+ *
+ * This code is licensed under the GPL.
+ */
+
+#ifndef HW_TIMER_STELLARIS_GPTM_H
+#define HW_TIMER_STELLARIS_GPTM_H
+
+#include "qom/object.h"
+#include "hw/sysbus.h"
+#include "hw/irq.h"
+
+#define TYPE_STELLARIS_GPTM "stellaris-gptm"
+OBJECT_DECLARE_SIMPLE_TYPE(gptm_state, STELLARIS_GPTM)
+
+/*
+ * QEMU interface:
+ *  + sysbus MMIO region 0: register bank
+ *  + sysbus IRQ 0: timer interrupt
+ *  + unnamed GPIO output 0: trigger output for the ADC
+ */
+struct gptm_state {
+    SysBusDevice parent_obj;
+
+    MemoryRegion iomem;
+    uint32_t config;
+    uint32_t mode[2];
+    uint32_t control;
+    uint32_t state;
+    uint32_t mask;
+    uint32_t load[2];
+    uint32_t match[2];
+    uint32_t prescale[2];
+    uint32_t match_prescale[2];
+    uint32_t rtc;
+    int64_t tick[2];
+    struct gptm_state *opaque[2];
+    QEMUTimer *timer[2];
+    /* The timers have an alternate output used to trigger the ADC.  */
+    qemu_irq trigger;
+    qemu_irq irq;
+};
+
+#endif
diff --git a/hw/arm/stellaris.c b/hw/arm/stellaris.c
index a32c567ce11..8c547f146a9 100644
--- a/hw/arm/stellaris.c
+++ b/hw/arm/stellaris.c
@@ -26,6 +26,7 @@
 #include "hw/watchdog/cmsdk-apb-watchdog.h"
 #include "migration/vmstate.h"
 #include "hw/misc/unimp.h"
+#include "hw/timer/stellaris-gptm.h"
 #include "hw/qdev-clock.h"
 #include "qom/object.h"
 
@@ -55,309 +56,6 @@ typedef const struct {
     uint32_t peripherals;
 } stellaris_board_info;
 
-/* General purpose timer module.  */
-
-#define TYPE_STELLARIS_GPTM "stellaris-gptm"
-OBJECT_DECLARE_SIMPLE_TYPE(gptm_state, STELLARIS_GPTM)
-
-struct gptm_state {
-    SysBusDevice parent_obj;
-
-    MemoryRegion iomem;
-    uint32_t config;
-    uint32_t mode[2];
-    uint32_t control;
-    uint32_t state;
-    uint32_t mask;
-    uint32_t load[2];
-    uint32_t match[2];
-    uint32_t prescale[2];
-    uint32_t match_prescale[2];
-    uint32_t rtc;
-    int64_t tick[2];
-    struct gptm_state *opaque[2];
-    QEMUTimer *timer[2];
-    /* The timers have an alternate output used to trigger the ADC.  */
-    qemu_irq trigger;
-    qemu_irq irq;
-};
-
-static void gptm_update_irq(gptm_state *s)
-{
-    int level;
-    level = (s->state & s->mask) != 0;
-    qemu_set_irq(s->irq, level);
-}
-
-static void gptm_stop(gptm_state *s, int n)
-{
-    timer_del(s->timer[n]);
-}
-
-static void gptm_reload(gptm_state *s, int n, int reset)
-{
-    int64_t tick;
-    if (reset) {
-        tick = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
-    } else {
-        tick = s->tick[n];
-    }
-
-    if (s->config == 0) {
-        /* 32-bit CountDown.  */
-        uint32_t count;
-        count = s->load[0] | (s->load[1] << 16);
-        tick += (int64_t)count * system_clock_scale;
-    } else if (s->config == 1) {
-        /* 32-bit RTC.  1Hz tick.  */
-        tick += NANOSECONDS_PER_SECOND;
-    } else if (s->mode[n] == 0xa) {
-        /* PWM mode.  Not implemented.  */
-    } else {
-        qemu_log_mask(LOG_UNIMP,
-                      "GPTM: 16-bit timer mode unimplemented: 0x%x\n",
-                      s->mode[n]);
-        return;
-    }
-    s->tick[n] = tick;
-    timer_mod(s->timer[n], tick);
-}
-
-static void gptm_tick(void *opaque)
-{
-    gptm_state **p = (gptm_state **)opaque;
-    gptm_state *s;
-    int n;
-
-    s = *p;
-    n = p - s->opaque;
-    if (s->config == 0) {
-        s->state |= 1;
-        if ((s->control & 0x20)) {
-            /* Output trigger.  */
-            qemu_irq_pulse(s->trigger);
-        }
-        if (s->mode[0] & 1) {
-            /* One-shot.  */
-            s->control &= ~1;
-        } else {
-            /* Periodic.  */
-            gptm_reload(s, 0, 0);
-        }
-    } else if (s->config == 1) {
-        /* RTC.  */
-        uint32_t match;
-        s->rtc++;
-        match = s->match[0] | (s->match[1] << 16);
-        if (s->rtc > match)
-            s->rtc = 0;
-        if (s->rtc == 0) {
-            s->state |= 8;
-        }
-        gptm_reload(s, 0, 0);
-    } else if (s->mode[n] == 0xa) {
-        /* PWM mode.  Not implemented.  */
-    } else {
-        qemu_log_mask(LOG_UNIMP,
-                      "GPTM: 16-bit timer mode unimplemented: 0x%x\n",
-                      s->mode[n]);
-    }
-    gptm_update_irq(s);
-}
-
-static uint64_t gptm_read(void *opaque, hwaddr offset,
-                          unsigned size)
-{
-    gptm_state *s = (gptm_state *)opaque;
-
-    switch (offset) {
-    case 0x00: /* CFG */
-        return s->config;
-    case 0x04: /* TAMR */
-        return s->mode[0];
-    case 0x08: /* TBMR */
-        return s->mode[1];
-    case 0x0c: /* CTL */
-        return s->control;
-    case 0x18: /* IMR */
-        return s->mask;
-    case 0x1c: /* RIS */
-        return s->state;
-    case 0x20: /* MIS */
-        return s->state & s->mask;
-    case 0x24: /* CR */
-        return 0;
-    case 0x28: /* TAILR */
-        return s->load[0] | ((s->config < 4) ? (s->load[1] << 16) : 0);
-    case 0x2c: /* TBILR */
-        return s->load[1];
-    case 0x30: /* TAMARCHR */
-        return s->match[0] | ((s->config < 4) ? (s->match[1] << 16) : 0);
-    case 0x34: /* TBMATCHR */
-        return s->match[1];
-    case 0x38: /* TAPR */
-        return s->prescale[0];
-    case 0x3c: /* TBPR */
-        return s->prescale[1];
-    case 0x40: /* TAPMR */
-        return s->match_prescale[0];
-    case 0x44: /* TBPMR */
-        return s->match_prescale[1];
-    case 0x48: /* TAR */
-        if (s->config == 1) {
-            return s->rtc;
-        }
-        qemu_log_mask(LOG_UNIMP,
-                      "GPTM: read of TAR but timer read not supported\n");
-        return 0;
-    case 0x4c: /* TBR */
-        qemu_log_mask(LOG_UNIMP,
-                      "GPTM: read of TBR but timer read not supported\n");
-        return 0;
-    default:
-        qemu_log_mask(LOG_GUEST_ERROR,
-                      "GPTM: read at bad offset 0x02%" HWADDR_PRIx "\n",
-                      offset);
-        return 0;
-    }
-}
-
-static void gptm_write(void *opaque, hwaddr offset,
-                       uint64_t value, unsigned size)
-{
-    gptm_state *s = (gptm_state *)opaque;
-    uint32_t oldval;
-
-    /*
-     * The timers should be disabled before changing the configuration.
-     * We take advantage of this and defer everything until the timer
-     * is enabled.
-     */
-    switch (offset) {
-    case 0x00: /* CFG */
-        s->config = value;
-        break;
-    case 0x04: /* TAMR */
-        s->mode[0] = value;
-        break;
-    case 0x08: /* TBMR */
-        s->mode[1] = value;
-        break;
-    case 0x0c: /* CTL */
-        oldval = s->control;
-        s->control = value;
-        /* TODO: Implement pause.  */
-        if ((oldval ^ value) & 1) {
-            if (value & 1) {
-                gptm_reload(s, 0, 1);
-            } else {
-                gptm_stop(s, 0);
-            }
-        }
-        if (((oldval ^ value) & 0x100) && s->config >= 4) {
-            if (value & 0x100) {
-                gptm_reload(s, 1, 1);
-            } else {
-                gptm_stop(s, 1);
-            }
-        }
-        break;
-    case 0x18: /* IMR */
-        s->mask = value & 0x77;
-        gptm_update_irq(s);
-        break;
-    case 0x24: /* CR */
-        s->state &= ~value;
-        break;
-    case 0x28: /* TAILR */
-        s->load[0] = value & 0xffff;
-        if (s->config < 4) {
-            s->load[1] = value >> 16;
-        }
-        break;
-    case 0x2c: /* TBILR */
-        s->load[1] = value & 0xffff;
-        break;
-    case 0x30: /* TAMARCHR */
-        s->match[0] = value & 0xffff;
-        if (s->config < 4) {
-            s->match[1] = value >> 16;
-        }
-        break;
-    case 0x34: /* TBMATCHR */
-        s->match[1] = value >> 16;
-        break;
-    case 0x38: /* TAPR */
-        s->prescale[0] = value;
-        break;
-    case 0x3c: /* TBPR */
-        s->prescale[1] = value;
-        break;
-    case 0x40: /* TAPMR */
-        s->match_prescale[0] = value;
-        break;
-    case 0x44: /* TBPMR */
-        s->match_prescale[0] = value;
-        break;
-    default:
-        qemu_log_mask(LOG_GUEST_ERROR,
-                      "GPTM: write at bad offset 0x02%" HWADDR_PRIx "\n",
-                      offset);
-    }
-    gptm_update_irq(s);
-}
-
-static const MemoryRegionOps gptm_ops = {
-    .read = gptm_read,
-    .write = gptm_write,
-    .endianness = DEVICE_NATIVE_ENDIAN,
-};
-
-static const VMStateDescription vmstate_stellaris_gptm = {
-    .name = "stellaris_gptm",
-    .version_id = 1,
-    .minimum_version_id = 1,
-    .fields = (VMStateField[]) {
-        VMSTATE_UINT32(config, gptm_state),
-        VMSTATE_UINT32_ARRAY(mode, gptm_state, 2),
-        VMSTATE_UINT32(control, gptm_state),
-        VMSTATE_UINT32(state, gptm_state),
-        VMSTATE_UINT32(mask, gptm_state),
-        VMSTATE_UNUSED(8),
-        VMSTATE_UINT32_ARRAY(load, gptm_state, 2),
-        VMSTATE_UINT32_ARRAY(match, gptm_state, 2),
-        VMSTATE_UINT32_ARRAY(prescale, gptm_state, 2),
-        VMSTATE_UINT32_ARRAY(match_prescale, gptm_state, 2),
-        VMSTATE_UINT32(rtc, gptm_state),
-        VMSTATE_INT64_ARRAY(tick, gptm_state, 2),
-        VMSTATE_TIMER_PTR_ARRAY(timer, gptm_state, 2),
-        VMSTATE_END_OF_LIST()
-    }
-};
-
-static void stellaris_gptm_init(Object *obj)
-{
-    DeviceState *dev = DEVICE(obj);
-    gptm_state *s = STELLARIS_GPTM(obj);
-    SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
-
-    sysbus_init_irq(sbd, &s->irq);
-    qdev_init_gpio_out(dev, &s->trigger, 1);
-
-    memory_region_init_io(&s->iomem, obj, &gptm_ops, s,
-                          "gptm", 0x1000);
-    sysbus_init_mmio(sbd, &s->iomem);
-
-    s->opaque[0] = s->opaque[1] = s;
-}
-
-static void stellaris_gptm_realize(DeviceState *dev, Error **errp)
-{
-    gptm_state *s = STELLARIS_GPTM(dev);
-    s->timer[0] = timer_new_ns(QEMU_CLOCK_VIRTUAL, gptm_tick, &s->opaque[0]);
-    s->timer[1] = timer_new_ns(QEMU_CLOCK_VIRTUAL, gptm_tick, &s->opaque[1]);
-}
-
 /* System controller.  */
 
 #define TYPE_STELLARIS_SYS "stellaris-sys"
@@ -1642,22 +1340,6 @@ static const TypeInfo stellaris_i2c_info = {
     .class_init    = stellaris_i2c_class_init,
 };
 
-static void stellaris_gptm_class_init(ObjectClass *klass, void *data)
-{
-    DeviceClass *dc = DEVICE_CLASS(klass);
-
-    dc->vmsd = &vmstate_stellaris_gptm;
-    dc->realize = stellaris_gptm_realize;
-}
-
-static const TypeInfo stellaris_gptm_info = {
-    .name          = TYPE_STELLARIS_GPTM,
-    .parent        = TYPE_SYS_BUS_DEVICE,
-    .instance_size = sizeof(gptm_state),
-    .instance_init = stellaris_gptm_init,
-    .class_init    = stellaris_gptm_class_init,
-};
-
 static void stellaris_adc_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
@@ -1696,7 +1378,6 @@ static const TypeInfo stellaris_sys_info = {
 static void stellaris_register_types(void)
 {
     type_register_static(&stellaris_i2c_info);
-    type_register_static(&stellaris_gptm_info);
     type_register_static(&stellaris_adc_info);
     type_register_static(&stellaris_sys_info);
 }
diff --git a/hw/timer/stellaris-gptm.c b/hw/timer/stellaris-gptm.c
new file mode 100644
index 00000000000..7846fe5f84e
--- /dev/null
+++ b/hw/timer/stellaris-gptm.c
@@ -0,0 +1,314 @@
+/*
+ * Luminary Micro Stellaris General Purpose Timer Module
+ *
+ * Copyright (c) 2006 CodeSourcery.
+ * Written by Paul Brook
+ *
+ * This code is licensed under the GPL.
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/log.h"
+#include "qemu/timer.h"
+#include "migration/vmstate.h"
+#include "hw/timer/stellaris-gptm.h"
+#include "hw/timer/armv7m_systick.h" /* Needed only for system_clock_scale */
+
+static void gptm_update_irq(gptm_state *s)
+{
+    int level;
+    level = (s->state & s->mask) != 0;
+    qemu_set_irq(s->irq, level);
+}
+
+static void gptm_stop(gptm_state *s, int n)
+{
+    timer_del(s->timer[n]);
+}
+
+static void gptm_reload(gptm_state *s, int n, int reset)
+{
+    int64_t tick;
+    if (reset) {
+        tick = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
+    } else {
+        tick = s->tick[n];
+    }
+
+    if (s->config == 0) {
+        /* 32-bit CountDown.  */
+        uint32_t count;
+        count = s->load[0] | (s->load[1] << 16);
+        tick += (int64_t)count * system_clock_scale;
+    } else if (s->config == 1) {
+        /* 32-bit RTC.  1Hz tick.  */
+        tick += NANOSECONDS_PER_SECOND;
+    } else if (s->mode[n] == 0xa) {
+        /* PWM mode.  Not implemented.  */
+    } else {
+        qemu_log_mask(LOG_UNIMP,
+                      "GPTM: 16-bit timer mode unimplemented: 0x%x\n",
+                      s->mode[n]);
+        return;
+    }
+    s->tick[n] = tick;
+    timer_mod(s->timer[n], tick);
+}
+
+static void gptm_tick(void *opaque)
+{
+    gptm_state **p = (gptm_state **)opaque;
+    gptm_state *s;
+    int n;
+
+    s = *p;
+    n = p - s->opaque;
+    if (s->config == 0) {
+        s->state |= 1;
+        if ((s->control & 0x20)) {
+            /* Output trigger.  */
+            qemu_irq_pulse(s->trigger);
+        }
+        if (s->mode[0] & 1) {
+            /* One-shot.  */
+            s->control &= ~1;
+        } else {
+            /* Periodic.  */
+            gptm_reload(s, 0, 0);
+        }
+    } else if (s->config == 1) {
+        /* RTC.  */
+        uint32_t match;
+        s->rtc++;
+        match = s->match[0] | (s->match[1] << 16);
+        if (s->rtc > match)
+            s->rtc = 0;
+        if (s->rtc == 0) {
+            s->state |= 8;
+        }
+        gptm_reload(s, 0, 0);
+    } else if (s->mode[n] == 0xa) {
+        /* PWM mode.  Not implemented.  */
+    } else {
+        qemu_log_mask(LOG_UNIMP,
+                      "GPTM: 16-bit timer mode unimplemented: 0x%x\n",
+                      s->mode[n]);
+    }
+    gptm_update_irq(s);
+}
+
+static uint64_t gptm_read(void *opaque, hwaddr offset,
+                          unsigned size)
+{
+    gptm_state *s = (gptm_state *)opaque;
+
+    switch (offset) {
+    case 0x00: /* CFG */
+        return s->config;
+    case 0x04: /* TAMR */
+        return s->mode[0];
+    case 0x08: /* TBMR */
+        return s->mode[1];
+    case 0x0c: /* CTL */
+        return s->control;
+    case 0x18: /* IMR */
+        return s->mask;
+    case 0x1c: /* RIS */
+        return s->state;
+    case 0x20: /* MIS */
+        return s->state & s->mask;
+    case 0x24: /* CR */
+        return 0;
+    case 0x28: /* TAILR */
+        return s->load[0] | ((s->config < 4) ? (s->load[1] << 16) : 0);
+    case 0x2c: /* TBILR */
+        return s->load[1];
+    case 0x30: /* TAMARCHR */
+        return s->match[0] | ((s->config < 4) ? (s->match[1] << 16) : 0);
+    case 0x34: /* TBMATCHR */
+        return s->match[1];
+    case 0x38: /* TAPR */
+        return s->prescale[0];
+    case 0x3c: /* TBPR */
+        return s->prescale[1];
+    case 0x40: /* TAPMR */
+        return s->match_prescale[0];
+    case 0x44: /* TBPMR */
+        return s->match_prescale[1];
+    case 0x48: /* TAR */
+        if (s->config == 1) {
+            return s->rtc;
+        }
+        qemu_log_mask(LOG_UNIMP,
+                      "GPTM: read of TAR but timer read not supported\n");
+        return 0;
+    case 0x4c: /* TBR */
+        qemu_log_mask(LOG_UNIMP,
+                      "GPTM: read of TBR but timer read not supported\n");
+        return 0;
+    default:
+        qemu_log_mask(LOG_GUEST_ERROR,
+                      "GPTM: read at bad offset 0x02%" HWADDR_PRIx "\n",
+                      offset);
+        return 0;
+    }
+}
+
+static void gptm_write(void *opaque, hwaddr offset,
+                       uint64_t value, unsigned size)
+{
+    gptm_state *s = (gptm_state *)opaque;
+    uint32_t oldval;
+
+    /*
+     * The timers should be disabled before changing the configuration.
+     * We take advantage of this and defer everything until the timer
+     * is enabled.
+     */
+    switch (offset) {
+    case 0x00: /* CFG */
+        s->config = value;
+        break;
+    case 0x04: /* TAMR */
+        s->mode[0] = value;
+        break;
+    case 0x08: /* TBMR */
+        s->mode[1] = value;
+        break;
+    case 0x0c: /* CTL */
+        oldval = s->control;
+        s->control = value;
+        /* TODO: Implement pause.  */
+        if ((oldval ^ value) & 1) {
+            if (value & 1) {
+                gptm_reload(s, 0, 1);
+            } else {
+                gptm_stop(s, 0);
+            }
+        }
+        if (((oldval ^ value) & 0x100) && s->config >= 4) {
+            if (value & 0x100) {
+                gptm_reload(s, 1, 1);
+            } else {
+                gptm_stop(s, 1);
+            }
+        }
+        break;
+    case 0x18: /* IMR */
+        s->mask = value & 0x77;
+        gptm_update_irq(s);
+        break;
+    case 0x24: /* CR */
+        s->state &= ~value;
+        break;
+    case 0x28: /* TAILR */
+        s->load[0] = value & 0xffff;
+        if (s->config < 4) {
+            s->load[1] = value >> 16;
+        }
+        break;
+    case 0x2c: /* TBILR */
+        s->load[1] = value & 0xffff;
+        break;
+    case 0x30: /* TAMARCHR */
+        s->match[0] = value & 0xffff;
+        if (s->config < 4) {
+            s->match[1] = value >> 16;
+        }
+        break;
+    case 0x34: /* TBMATCHR */
+        s->match[1] = value >> 16;
+        break;
+    case 0x38: /* TAPR */
+        s->prescale[0] = value;
+        break;
+    case 0x3c: /* TBPR */
+        s->prescale[1] = value;
+        break;
+    case 0x40: /* TAPMR */
+        s->match_prescale[0] = value;
+        break;
+    case 0x44: /* TBPMR */
+        s->match_prescale[0] = value;
+        break;
+    default:
+        qemu_log_mask(LOG_GUEST_ERROR,
+                      "GPTM: write at bad offset 0x02%" HWADDR_PRIx "\n",
+                      offset);
+    }
+    gptm_update_irq(s);
+}
+
+static const MemoryRegionOps gptm_ops = {
+    .read = gptm_read,
+    .write = gptm_write,
+    .endianness = DEVICE_NATIVE_ENDIAN,
+};
+
+static const VMStateDescription vmstate_stellaris_gptm = {
+    .name = "stellaris_gptm",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .fields = (VMStateField[]) {
+        VMSTATE_UINT32(config, gptm_state),
+        VMSTATE_UINT32_ARRAY(mode, gptm_state, 2),
+        VMSTATE_UINT32(control, gptm_state),
+        VMSTATE_UINT32(state, gptm_state),
+        VMSTATE_UINT32(mask, gptm_state),
+        VMSTATE_UNUSED(8),
+        VMSTATE_UINT32_ARRAY(load, gptm_state, 2),
+        VMSTATE_UINT32_ARRAY(match, gptm_state, 2),
+        VMSTATE_UINT32_ARRAY(prescale, gptm_state, 2),
+        VMSTATE_UINT32_ARRAY(match_prescale, gptm_state, 2),
+        VMSTATE_UINT32(rtc, gptm_state),
+        VMSTATE_INT64_ARRAY(tick, gptm_state, 2),
+        VMSTATE_TIMER_PTR_ARRAY(timer, gptm_state, 2),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
+static void stellaris_gptm_init(Object *obj)
+{
+    DeviceState *dev = DEVICE(obj);
+    gptm_state *s = STELLARIS_GPTM(obj);
+    SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
+
+    sysbus_init_irq(sbd, &s->irq);
+    qdev_init_gpio_out(dev, &s->trigger, 1);
+
+    memory_region_init_io(&s->iomem, obj, &gptm_ops, s,
+                          "gptm", 0x1000);
+    sysbus_init_mmio(sbd, &s->iomem);
+
+    s->opaque[0] = s->opaque[1] = s;
+}
+
+static void stellaris_gptm_realize(DeviceState *dev, Error **errp)
+{
+    gptm_state *s = STELLARIS_GPTM(dev);
+    s->timer[0] = timer_new_ns(QEMU_CLOCK_VIRTUAL, gptm_tick, &s->opaque[0]);
+    s->timer[1] = timer_new_ns(QEMU_CLOCK_VIRTUAL, gptm_tick, &s->opaque[1]);
+}
+
+static void stellaris_gptm_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+
+    dc->vmsd = &vmstate_stellaris_gptm;
+    dc->realize = stellaris_gptm_realize;
+}
+
+static const TypeInfo stellaris_gptm_info = {
+    .name          = TYPE_STELLARIS_GPTM,
+    .parent        = TYPE_SYS_BUS_DEVICE,
+    .instance_size = sizeof(gptm_state),
+    .instance_init = stellaris_gptm_init,
+    .class_init    = stellaris_gptm_class_init,
+};
+
+static void stellaris_gptm_register_types(void)
+{
+    type_register_static(&stellaris_gptm_info);
+}
+
+type_init(stellaris_gptm_register_types)
diff --git a/hw/arm/Kconfig b/hw/arm/Kconfig
index dc050b5c37f..78fdd1b9350 100644
--- a/hw/arm/Kconfig
+++ b/hw/arm/Kconfig
@@ -235,6 +235,7 @@ config STELLARIS
     select SSI_SD
     select STELLARIS_INPUT
     select STELLARIS_ENET # ethernet
+    select STELLARIS_GPTM # general purpose timer module
     select UNIMP
 
 config STM32VLDISCOVERY
diff --git a/hw/timer/Kconfig b/hw/timer/Kconfig
index bac25117155..1e73da7e120 100644
--- a/hw/timer/Kconfig
+++ b/hw/timer/Kconfig
@@ -52,5 +52,8 @@ config SSE_COUNTER
 config SSE_TIMER
     bool
 
+config STELLARIS_GPTM
+    bool
+
 config AVR_TIMER16
     bool
diff --git a/hw/timer/meson.build b/hw/timer/meson.build
index 1aa3cd22844..e67478a8f10 100644
--- a/hw/timer/meson.build
+++ b/hw/timer/meson.build
@@ -31,6 +31,7 @@ softmmu_ss.add(when: 'CONFIG_SH_TIMER', if_true: files('sh_timer.c'))
 softmmu_ss.add(when: 'CONFIG_SLAVIO', if_true: files('slavio_timer.c'))
 softmmu_ss.add(when: 'CONFIG_SSE_COUNTER', if_true: files('sse-counter.c'))
 softmmu_ss.add(when: 'CONFIG_SSE_TIMER', if_true: files('sse-timer.c'))
+softmmu_ss.add(when: 'CONFIG_STELLARIS_GPTM', if_true: files('stellaris-gptm.c'))
 softmmu_ss.add(when: 'CONFIG_STM32F2XX_TIMER', if_true: files('stm32f2xx_timer.c'))
 softmmu_ss.add(when: 'CONFIG_XILINX', if_true: files('xilinx_timer.c'))
 specific_ss.add(when: 'CONFIG_IBEX', if_true: files('ibex_timer.c'))
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 50/51] hw/timer/stellaris-gptm: Use Clock input instead of system_clock_scale
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (48 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 49/51] hw/arm/stellaris: Split stellaris-gptm into its own file Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-01 10:36 ` [PULL 51/51] arm: Remove system_clock_scale global Peter Maydell
  2021-09-02  7:48 ` [PULL 00/51] target-arm queue Peter Maydell
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

The stellaris-gptm timer currently uses system_clock_scale for one of
its timer modes where the timer runs at the CPU clock rate.  Make it
use a Clock input instead.

We don't try to make the timer handle changes in the clock frequency
while the downcounter is running.  This is not a change in behaviour
from the previous system_clock_scale implementation -- we will pick
up the new frequency only when the downcounter hits zero.  Handling
dynamic clock changes when the counter is running would require state
that the current gptm implementation doesn't have.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Damien Hedde <damien.hedde@greensocs.com>
Message-id: 20210812093356.1946-25-peter.maydell@linaro.org
---
 include/hw/timer/stellaris-gptm.h |  3 +++
 hw/arm/stellaris.c                | 12 +++++++++---
 hw/timer/stellaris-gptm.c         | 26 ++++++++++++++++++++++----
 3 files changed, 34 insertions(+), 7 deletions(-)

diff --git a/include/hw/timer/stellaris-gptm.h b/include/hw/timer/stellaris-gptm.h
index b8fa43c94bf..fde1fc6f0c7 100644
--- a/include/hw/timer/stellaris-gptm.h
+++ b/include/hw/timer/stellaris-gptm.h
@@ -13,6 +13,7 @@
 #include "qom/object.h"
 #include "hw/sysbus.h"
 #include "hw/irq.h"
+#include "hw/clock.h"
 
 #define TYPE_STELLARIS_GPTM "stellaris-gptm"
 OBJECT_DECLARE_SIMPLE_TYPE(gptm_state, STELLARIS_GPTM)
@@ -22,6 +23,7 @@ OBJECT_DECLARE_SIMPLE_TYPE(gptm_state, STELLARIS_GPTM)
  *  + sysbus MMIO region 0: register bank
  *  + sysbus IRQ 0: timer interrupt
  *  + unnamed GPIO output 0: trigger output for the ADC
+ *  + Clock input "clk": the 32-bit countdown timer runs at this speed
  */
 struct gptm_state {
     SysBusDevice parent_obj;
@@ -43,6 +45,7 @@ struct gptm_state {
     /* The timers have an alternate output used to trigger the ADC.  */
     qemu_irq trigger;
     qemu_irq irq;
+    Clock *clk;
 };
 
 #endif
diff --git a/hw/arm/stellaris.c b/hw/arm/stellaris.c
index 8c547f146a9..3e7d1dabad1 100644
--- a/hw/arm/stellaris.c
+++ b/hw/arm/stellaris.c
@@ -1090,9 +1090,15 @@ static void stellaris_init(MachineState *ms, stellaris_board_info *board)
     }
     for (i = 0; i < 4; i++) {
         if (board->dc2 & (0x10000 << i)) {
-            dev = sysbus_create_simple(TYPE_STELLARIS_GPTM,
-                                       0x40030000 + i * 0x1000,
-                                       qdev_get_gpio_in(nvic, timer_irq[i]));
+            SysBusDevice *sbd;
+
+            dev = qdev_new(TYPE_STELLARIS_GPTM);
+            sbd = SYS_BUS_DEVICE(dev);
+            qdev_connect_clock_in(dev, "clk",
+                                  qdev_get_clock_out(ssys_dev, "SYSCLK"));
+            sysbus_realize_and_unref(sbd, &error_fatal);
+            sysbus_mmio_map(sbd, 0, 0x40030000 + i * 0x1000);
+            sysbus_connect_irq(sbd, 0, qdev_get_gpio_in(nvic, timer_irq[i]));
             /* TODO: This is incorrect, but we get away with it because
                the ADC output is only ever pulsed.  */
             qdev_connect_gpio_out(dev, 0, adc);
diff --git a/hw/timer/stellaris-gptm.c b/hw/timer/stellaris-gptm.c
index 7846fe5f84e..fd71c79be48 100644
--- a/hw/timer/stellaris-gptm.c
+++ b/hw/timer/stellaris-gptm.c
@@ -10,9 +10,10 @@
 #include "qemu/osdep.h"
 #include "qemu/log.h"
 #include "qemu/timer.h"
+#include "qapi/error.h"
 #include "migration/vmstate.h"
+#include "hw/qdev-clock.h"
 #include "hw/timer/stellaris-gptm.h"
-#include "hw/timer/armv7m_systick.h" /* Needed only for system_clock_scale */
 
 static void gptm_update_irq(gptm_state *s)
 {
@@ -39,7 +40,7 @@ static void gptm_reload(gptm_state *s, int n, int reset)
         /* 32-bit CountDown.  */
         uint32_t count;
         count = s->load[0] | (s->load[1] << 16);
-        tick += (int64_t)count * system_clock_scale;
+        tick += clock_ticks_to_ns(s->clk, count);
     } else if (s->config == 1) {
         /* 32-bit RTC.  1Hz tick.  */
         tick += NANOSECONDS_PER_SECOND;
@@ -247,8 +248,8 @@ static const MemoryRegionOps gptm_ops = {
 
 static const VMStateDescription vmstate_stellaris_gptm = {
     .name = "stellaris_gptm",
-    .version_id = 1,
-    .minimum_version_id = 1,
+    .version_id = 2,
+    .minimum_version_id = 2,
     .fields = (VMStateField[]) {
         VMSTATE_UINT32(config, gptm_state),
         VMSTATE_UINT32_ARRAY(mode, gptm_state, 2),
@@ -263,6 +264,7 @@ static const VMStateDescription vmstate_stellaris_gptm = {
         VMSTATE_UINT32(rtc, gptm_state),
         VMSTATE_INT64_ARRAY(tick, gptm_state, 2),
         VMSTATE_TIMER_PTR_ARRAY(timer, gptm_state, 2),
+        VMSTATE_CLOCK(clk, gptm_state),
         VMSTATE_END_OF_LIST()
     }
 };
@@ -281,11 +283,27 @@ static void stellaris_gptm_init(Object *obj)
     sysbus_init_mmio(sbd, &s->iomem);
 
     s->opaque[0] = s->opaque[1] = s;
+
+    /*
+     * TODO: in an ideal world we would model the effects of changing
+     * the input clock frequency while the countdown timer is active.
+     * The best way to do this would be to convert the device to use
+     * ptimer instead of hand-rolling its own timer. This would also
+     * make it easy to implement reading the current count from the
+     * TAR and TBR registers.
+     */
+    s->clk = qdev_init_clock_in(dev, "clk", NULL, NULL, 0);
 }
 
 static void stellaris_gptm_realize(DeviceState *dev, Error **errp)
 {
     gptm_state *s = STELLARIS_GPTM(dev);
+
+    if (!clock_has_source(s->clk)) {
+        error_setg(errp, "stellaris-gptm: clk must be connected");
+        return;
+    }
+
     s->timer[0] = timer_new_ns(QEMU_CLOCK_VIRTUAL, gptm_tick, &s->opaque[0]);
     s->timer[1] = timer_new_ns(QEMU_CLOCK_VIRTUAL, gptm_tick, &s->opaque[1]);
 }
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* [PULL 51/51] arm: Remove system_clock_scale global
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (49 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 50/51] hw/timer/stellaris-gptm: Use Clock input instead of system_clock_scale Peter Maydell
@ 2021-09-01 10:36 ` Peter Maydell
  2021-09-02  7:48 ` [PULL 00/51] target-arm queue Peter Maydell
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-01 10:36 UTC (permalink / raw)
  To: qemu-devel

All the devices that used to use system_clock_scale have now been
converted to use Clock inputs instead, so the global is no longer
needed; remove it and all the code that sets it.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210812093356.1946-26-peter.maydell@linaro.org
---
 include/hw/timer/armv7m_systick.h | 22 ----------------------
 hw/arm/armsse.c                   | 17 +----------------
 hw/arm/mps2.c                     |  2 --
 hw/arm/msf2-soc.c                 |  2 --
 hw/arm/netduino2.c                |  2 --
 hw/arm/netduinoplus2.c            |  2 --
 hw/arm/nrf51_soc.c                |  2 --
 hw/arm/stellaris.c                |  7 ++++---
 hw/arm/stm32vldiscovery.c         |  2 --
 hw/timer/armv7m_systick.c         |  2 --
 10 files changed, 5 insertions(+), 55 deletions(-)

diff --git a/include/hw/timer/armv7m_systick.h b/include/hw/timer/armv7m_systick.h
index 38adf8d274e..ee09b138810 100644
--- a/include/hw/timer/armv7m_systick.h
+++ b/include/hw/timer/armv7m_systick.h
@@ -47,26 +47,4 @@ struct SysTickState {
     Clock *cpuclk;
 };
 
-/*
- * Multiplication factor to convert from system clock ticks to qemu timer
- * ticks. This should be set (by board code, usually) to a value
- * equal to NANOSECONDS_PER_SECOND / frq, where frq is the clock frequency
- * in Hz of the CPU.
- *
- * This value is used by the systick device when it is running in
- * its "use the CPU clock" mode (ie when SYST_CSR.CLKSOURCE == 1) to
- * set how fast the timer should tick.
- *
- * TODO: we should refactor this so that rather than using a global
- * we use a device property or something similar. This is complicated
- * because (a) the property would need to be plumbed through from the
- * board code down through various layers to the systick device
- * and (b) the property needs to be modifiable after realize, because
- * the stellaris board uses this to implement the behaviour where the
- * guest can reprogram the PLL registers to downclock the CPU, and the
- * systick device needs to react accordingly. Possibly this should
- * be deferred until we have a good API for modelling clock trees.
- */
-extern int system_clock_scale;
-
 #endif
diff --git a/hw/arm/armsse.c b/hw/arm/armsse.c
index 70b52c3d4b9..aecdeb9815a 100644
--- a/hw/arm/armsse.c
+++ b/hw/arm/armsse.c
@@ -689,17 +689,6 @@ static void armsse_forward_sec_resp_cfg(ARMSSE *s)
     qdev_connect_gpio_out(dev_splitter, 2, s->sec_resp_cfg_in);
 }
 
-static void armsse_mainclk_update(void *opaque, ClockEvent event)
-{
-    ARMSSE *s = ARM_SSE(opaque);
-
-    /*
-     * Set system_clock_scale from our Clock input; this is what
-     * controls the tick rate of the CPU SysTick timer.
-     */
-    system_clock_scale = clock_ticks_to_ns(s->mainclk, 1);
-}
-
 static void armsse_init(Object *obj)
 {
     ARMSSE *s = ARM_SSE(obj);
@@ -711,8 +700,7 @@ static void armsse_init(Object *obj)
     assert(info->sram_banks <= MAX_SRAM_BANKS);
     assert(info->num_cpus <= SSE_MAX_CPUS);
 
-    s->mainclk = qdev_init_clock_in(DEVICE(s), "MAINCLK",
-                                    armsse_mainclk_update, s, ClockUpdate);
+    s->mainclk = qdev_init_clock_in(DEVICE(s), "MAINCLK", NULL, NULL, 0);
     s->s32kclk = qdev_init_clock_in(DEVICE(s), "S32KCLK", NULL, NULL, 0);
 
     memory_region_init(&s->container, obj, "armsse-container", UINT64_MAX);
@@ -1654,9 +1642,6 @@ static void armsse_realize(DeviceState *dev, Error **errp)
      * devices in the ARMSSE.
      */
     sysbus_init_mmio(SYS_BUS_DEVICE(s), &s->container);
-
-    /* Set initial system_clock_scale from MAINCLK */
-    armsse_mainclk_update(s, ClockUpdate);
 }
 
 static void armsse_idau_check(IDAUInterface *ii, uint32_t address,
diff --git a/hw/arm/mps2.c b/hw/arm/mps2.c
index 3671f49ad7b..4634aa1a1ca 100644
--- a/hw/arm/mps2.c
+++ b/hw/arm/mps2.c
@@ -439,8 +439,6 @@ static void mps2_common_init(MachineState *machine)
                  qdev_get_gpio_in(armv7m,
                                   mmc->fpga_type == FPGA_AN511 ? 47 : 13));
 
-    system_clock_scale = NANOSECONDS_PER_SECOND / SYSCLK_FRQ;
-
     armv7m_load_kernel(ARM_CPU(first_cpu), machine->kernel_filename,
                        0x400000);
 }
diff --git a/hw/arm/msf2-soc.c b/hw/arm/msf2-soc.c
index dbc6d936a76..b5fe9f364d5 100644
--- a/hw/arm/msf2-soc.c
+++ b/hw/arm/msf2-soc.c
@@ -144,8 +144,6 @@ static void m2sxxx_soc_realize(DeviceState *dev_soc, Error **errp)
         return;
     }
 
-    system_clock_scale = clock_ticks_to_ns(s->m3clk, 1);
-
     for (i = 0; i < MSF2_NUM_UARTS; i++) {
         if (serial_hd(i)) {
             serial_mm_init(get_system_memory(), uart_addr[i], 2,
diff --git a/hw/arm/netduino2.c b/hw/arm/netduino2.c
index b5c0ba23ee5..3365da11bf7 100644
--- a/hw/arm/netduino2.c
+++ b/hw/arm/netduino2.c
@@ -39,8 +39,6 @@ static void netduino2_init(MachineState *machine)
     DeviceState *dev;
     Clock *sysclk;
 
-    system_clock_scale = NANOSECONDS_PER_SECOND / SYSCLK_FRQ;
-
     /* This clock doesn't need migration because it is fixed-frequency */
     sysclk = clock_new(OBJECT(machine), "SYSCLK");
     clock_set_hz(sysclk, SYSCLK_FRQ);
diff --git a/hw/arm/netduinoplus2.c b/hw/arm/netduinoplus2.c
index a5a8999cc8c..76cea8e4891 100644
--- a/hw/arm/netduinoplus2.c
+++ b/hw/arm/netduinoplus2.c
@@ -39,8 +39,6 @@ static void netduinoplus2_init(MachineState *machine)
     DeviceState *dev;
     Clock *sysclk;
 
-    system_clock_scale = NANOSECONDS_PER_SECOND / SYSCLK_FRQ;
-
     /* This clock doesn't need migration because it is fixed-frequency */
     sysclk = clock_new(OBJECT(machine), "SYSCLK");
     clock_set_hz(sysclk, SYSCLK_FRQ);
diff --git a/hw/arm/nrf51_soc.c b/hw/arm/nrf51_soc.c
index e3e849a32b1..34da0d62f00 100644
--- a/hw/arm/nrf51_soc.c
+++ b/hw/arm/nrf51_soc.c
@@ -84,8 +84,6 @@ static void nrf51_soc_realize(DeviceState *dev_soc, Error **errp)
      * will always provide one).
      */
 
-    system_clock_scale = NANOSECONDS_PER_SECOND / HCLK_FRQ;
-
     object_property_set_link(OBJECT(&s->cpu), "memory", OBJECT(&s->container),
                              &error_abort);
     if (!sysbus_realize(SYS_BUS_DEVICE(&s->cpu), errp)) {
diff --git a/hw/arm/stellaris.c b/hw/arm/stellaris.c
index 3e7d1dabad1..78827ace6b8 100644
--- a/hw/arm/stellaris.c
+++ b/hw/arm/stellaris.c
@@ -263,17 +263,18 @@ static bool ssys_use_rcc2(ssys_state *s)
  */
 static void ssys_calculate_system_clock(ssys_state *s, bool propagate_clock)
 {
+    int period_ns;
     /*
      * SYSDIV field specifies divisor: 0 == /1, 1 == /2, etc.  Input
      * clock is 200MHz, which is a period of 5 ns. Dividing the clock
      * frequency by X is the same as multiplying the period by X.
      */
     if (ssys_use_rcc2(s)) {
-        system_clock_scale = 5 * (((s->rcc2 >> 23) & 0x3f) + 1);
+        period_ns = 5 * (((s->rcc2 >> 23) & 0x3f) + 1);
     } else {
-        system_clock_scale = 5 * (((s->rcc >> 23) & 0xf) + 1);
+        period_ns = 5 * (((s->rcc >> 23) & 0xf) + 1);
     }
-    clock_set_ns(s->sysclk, system_clock_scale);
+    clock_set_ns(s->sysclk, period_ns);
     if (propagate_clock) {
         clock_propagate(s->sysclk);
     }
diff --git a/hw/arm/stm32vldiscovery.c b/hw/arm/stm32vldiscovery.c
index 9b79004703b..04036da3ee0 100644
--- a/hw/arm/stm32vldiscovery.c
+++ b/hw/arm/stm32vldiscovery.c
@@ -42,8 +42,6 @@ static void stm32vldiscovery_init(MachineState *machine)
     DeviceState *dev;
     Clock *sysclk;
 
-    system_clock_scale = NANOSECONDS_PER_SECOND / SYSCLK_FRQ;
-
     /* This clock doesn't need migration because it is fixed-frequency */
     sysclk = clock_new(OBJECT(machine), "SYSCLK");
     clock_set_hz(sysclk, SYSCLK_FRQ);
diff --git a/hw/timer/armv7m_systick.c b/hw/timer/armv7m_systick.c
index 21f6d0fd24f..3bd951dd044 100644
--- a/hw/timer/armv7m_systick.c
+++ b/hw/timer/armv7m_systick.c
@@ -30,8 +30,6 @@
 #define SYSCALIB_SKEW (1U << 30)
 #define SYSCALIB_TENMS ((1U << 24) - 1)
 
-int system_clock_scale;
-
 static void systick_set_period_from_clock(SysTickState *s)
 {
     /*
-- 
2.20.1



^ permalink raw reply	[flat|nested] 53+ messages in thread

* Re: [PULL 00/51] target-arm queue
  2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
                   ` (50 preceding siblings ...)
  2021-09-01 10:36 ` [PULL 51/51] arm: Remove system_clock_scale global Peter Maydell
@ 2021-09-02  7:48 ` Peter Maydell
  51 siblings, 0 replies; 53+ messages in thread
From: Peter Maydell @ 2021-09-02  7:48 UTC (permalink / raw)
  To: QEMU Developers

On Wed, 1 Sept 2021 at 11:36, Peter Maydell <peter.maydell@linaro.org> wrote:
>
> The following changes since commit ec397e90d21269037280633b6058d1f280e27667:
>
>   Merge remote-tracking branch 'remotes/alistair/tags/pull-riscv-to-apply-20210901-2' into staging (2021-09-01 08:33:02 +0100)
>
> are available in the Git repository at:
>
>   https://git.linaro.org/people/pmaydell/qemu-arm.git tags/pull-target-arm-20210901
>
> for you to fetch changes up to 683754c7b61f9e2ff098720ec80c9ab86c54663d:
>
>   arm: Remove system_clock_scale global (2021-09-01 11:08:21 +0100)
>
> ----------------------------------------------------------------
>  * Refactor M-profile systick to use Clocks instead of system_clock_scale global
>  * clock: Provide builtin multiplier/divider
>  * Add A64FX processor model
>  * Enable MVE emulation in Cortex-M55
>  * hw: Add compat machines for 6.2
>  * hw/intc/arm_gicv3: Replace mis-used MEMTX_* constants by booleans
>  * hw/arm/raspi: Remove deprecated raspi2/raspi3 aliases
>


Applied, thanks.

Please update the changelog at https://wiki.qemu.org/ChangeLog/6.2
for any user-visible changes.

-- PMM


^ permalink raw reply	[flat|nested] 53+ messages in thread

end of thread, other threads:[~2021-09-02  7:50 UTC | newest]

Thread overview: 53+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-09-01 10:36 [PULL 00/51] target-arm queue Peter Maydell
2021-09-01 10:36 ` [PULL 01/51] tests: Remove uses of deprecated raspi2/raspi3 machine names Peter Maydell
2021-09-01 10:36 ` [PULL 02/51] hw/arm/raspi: Remove deprecated raspi2/raspi3 aliases Peter Maydell
2021-09-01 10:36 ` [PULL 03/51] hw/intc/arm_gicv3_dist: Rename 64-bit accessors with 'q' suffix Peter Maydell
2021-09-01 10:36 ` [PULL 04/51] hw/intc/arm_gicv3: Replace mis-used MEMTX_* constants by booleans Peter Maydell
2021-09-01 10:36 ` [PULL 05/51] hw: Add compat machines for 6.2 Peter Maydell
2021-09-01 10:36 ` [PULL 06/51] target/arm: Implement MVE VADD (floating-point) Peter Maydell
2021-09-01 10:36 ` [PULL 07/51] target/arm: Implement MVE VSUB, VMUL, VABD, VMAXNM, VMINNM Peter Maydell
2021-09-01 10:36 ` [PULL 08/51] target/arm: Implement MVE VCADD Peter Maydell
2021-09-01 10:36 ` [PULL 09/51] target/arm: Implement MVE VFMA and VFMS Peter Maydell
2021-09-01 10:36 ` [PULL 10/51] target/arm: Implement MVE VCMUL and VCMLA Peter Maydell
2021-09-01 10:36 ` [PULL 11/51] target/arm: Implement MVE VMAXNMA and VMINNMA Peter Maydell
2021-09-01 10:36 ` [PULL 12/51] target/arm: Implement MVE scalar fp insns Peter Maydell
2021-09-01 10:36 ` [PULL 13/51] target/arm: Implement MVE fp-with-scalar VFMA, VFMAS Peter Maydell
2021-09-01 10:36 ` [PULL 14/51] softfloat: Remove assertion preventing silencing of NaN in default-NaN mode Peter Maydell
2021-09-01 10:36 ` [PULL 15/51] target/arm: Implement MVE FP max/min across vector Peter Maydell
2021-09-01 10:36 ` [PULL 16/51] target/arm: Implement MVE fp vector comparisons Peter Maydell
2021-09-01 10:36 ` [PULL 17/51] target/arm: Implement MVE fp scalar comparisons Peter Maydell
2021-09-01 10:36 ` [PULL 18/51] target/arm: Implement MVE VCVT between floating and fixed point Peter Maydell
2021-09-01 10:36 ` [PULL 19/51] target/arm: Implement MVE VCVT between fp and integer Peter Maydell
2021-09-01 10:36 ` [PULL 20/51] target/arm: Implement MVE VCVT with specified rounding mode Peter Maydell
2021-09-01 10:36 ` [PULL 21/51] target/arm: Implement MVE VCVT between single and half precision Peter Maydell
2021-09-01 10:36 ` [PULL 22/51] target/arm: Implement MVE VRINT insns Peter Maydell
2021-09-01 10:36 ` [PULL 23/51] target/arm: Enable MVE in Cortex-M55 Peter Maydell
2021-09-01 10:36 ` [PULL 24/51] target-arm: Add support for Fujitsu A64FX Peter Maydell
2021-09-01 10:36 ` [PULL 25/51] hw/arm/virt: target-arm: Add A64FX processor support to virt machine Peter Maydell
2021-09-01 10:36 ` [PULL 26/51] tests/arm-cpu-features: Add A64FX processor related tests Peter Maydell
2021-09-01 10:36 ` [PULL 27/51] arm: Move M-profile RAS register block into its own device Peter Maydell
2021-09-01 10:36 ` [PULL 28/51] arm: Move systick device creation from NVIC to ARMv7M object Peter Maydell
2021-09-01 10:36 ` [PULL 29/51] arm: Move system PPB container handling to armv7m Peter Maydell
2021-09-01 10:36 ` [PULL 30/51] hw/timer/armv7m_systick: Add usual QEMU interface comment Peter Maydell
2021-09-01 10:36 ` [PULL 31/51] hw/timer/armv7m_systick: Add input clocks Peter Maydell
2021-09-01 10:36 ` [PULL 32/51] hw/arm/armv7m: Create " Peter Maydell
2021-09-01 10:36 ` [PULL 33/51] armsse: Wire up systick cpuclk clock Peter Maydell
2021-09-01 10:36 ` [PULL 34/51] hw/arm/mps2.c: Connect up armv7m clocks Peter Maydell
2021-09-01 10:36 ` [PULL 35/51] clock: Provide builtin multiplier/divider Peter Maydell
2021-09-01 10:36 ` [PULL 36/51] hw/arm: Don't allocate separate MemoryRegions in stm32 SoC realize Peter Maydell
2021-09-01 10:36 ` [PULL 37/51] hw/arm/stm32f100: Wire up sysclk and refclk Peter Maydell
2021-09-01 10:36 ` [PULL 38/51] hw/arm/stm32f205: " Peter Maydell
2021-09-01 10:36 ` [PULL 39/51] hw/arm/stm32f405: " Peter Maydell
2021-09-01 10:36 ` [PULL 40/51] hw/arm/stm32vldiscovery: Delete trailing blank line Peter Maydell
2021-09-01 10:36 ` [PULL 41/51] hw/arm/nrf51: Wire up sysclk Peter Maydell
2021-09-01 10:36 ` [PULL 42/51] hw/arm/stellaris: split stellaris_sys_init() Peter Maydell
2021-09-01 10:36 ` [PULL 43/51] hw/arm/stellaris: Wire sysclk up to armv7m Peter Maydell
2021-09-01 10:36 ` [PULL 44/51] hw/arm/msf2_soc: Don't allocate separate MemoryRegions Peter Maydell
2021-09-01 10:36 ` [PULL 45/51] hw/arm/msf2: Use Clock input to MSF2_SOC instead of m3clk property Peter Maydell
2021-09-01 10:36 ` [PULL 46/51] hw/arm/msf2-soc: Wire up refclk Peter Maydell
2021-09-01 10:36 ` [PULL 47/51] hw/timer/armv7m_systick: Use clock inputs instead of system_clock_scale Peter Maydell
2021-09-01 10:36 ` [PULL 48/51] hw/arm/stellaris: Fix code style issues in GPTM code Peter Maydell
2021-09-01 10:36 ` [PULL 49/51] hw/arm/stellaris: Split stellaris-gptm into its own file Peter Maydell
2021-09-01 10:36 ` [PULL 50/51] hw/timer/stellaris-gptm: Use Clock input instead of system_clock_scale Peter Maydell
2021-09-01 10:36 ` [PULL 51/51] arm: Remove system_clock_scale global Peter Maydell
2021-09-02  7:48 ` [PULL 00/51] target-arm queue Peter Maydell

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.