From: Michael Rolnik <mrolnik@gmail.com>
To: qemu-devel@nongnu.org
Cc: thuth@redhat.com, Michael Rolnik <mrolnik@gmail.com>,
me@xcancerberox.com.ar, richard.henderson@linaro.org,
dovgaluk@ispras.ru, imammedo@redhat.com, philmd@redhat.com,
aleksandar.m.mail@gmail.com
Subject: [PATCH v41 13/21] hw/avr: Add dummy mask device
Date: Sat, 18 Jan 2020 21:14:08 +0200 [thread overview]
Message-ID: <20200118191416.19934-14-mrolnik@gmail.com> (raw)
In-Reply-To: <20200118191416.19934-1-mrolnik@gmail.com>
This is a simple device of just one register, whenver this register is
written it calls qemu_set_irq function for each of 8 bits/IRQs..
It is used to implement AVR Power Reduction
Signed-off-by: Michael Rolnik <mrolnik@gmail.com>
---
include/hw/misc/avr_mask.h | 47 ++++++++++++++++
hw/misc/avr_mask.c | 112 +++++++++++++++++++++++++++++++++++++
hw/misc/Kconfig | 3 +
hw/misc/Makefile.objs | 2 +
4 files changed, 164 insertions(+)
create mode 100644 include/hw/misc/avr_mask.h
create mode 100644 hw/misc/avr_mask.c
diff --git a/include/hw/misc/avr_mask.h b/include/hw/misc/avr_mask.h
new file mode 100644
index 0000000000..d3e21972d8
--- /dev/null
+++ b/include/hw/misc/avr_mask.h
@@ -0,0 +1,47 @@
+/*
+ * AVR Power Reduction
+ *
+ * Copyright (c) 2019 Michael Rolnik
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef HW_avr_mask_H
+#define HW_avr_mask_H
+
+#include "hw/sysbus.h"
+#include "chardev/char-fe.h"
+#include "hw/hw.h"
+
+
+#define TYPE_AVR_MASK "avr-mask"
+#define AVR_MASK(obj) OBJECT_CHECK(AVRMaskState, (obj), TYPE_AVR_MASK)
+
+typedef struct {
+ /* <private> */
+ SysBusDevice parent_obj;
+
+ /* <public> */
+ MemoryRegion iomem;
+
+ uint8_t val;
+ qemu_irq irq[8];
+} AVRMaskState;
+
+#endif /* HW_avr_mask_H */
diff --git a/hw/misc/avr_mask.c b/hw/misc/avr_mask.c
new file mode 100644
index 0000000000..3af82ed9c1
--- /dev/null
+++ b/hw/misc/avr_mask.c
@@ -0,0 +1,112 @@
+/*
+ * AVR Power Reduction
+ *
+ * Copyright (c) 2019 Michael Rolnik
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "qemu/osdep.h"
+#include "hw/misc/avr_mask.h"
+#include "qemu/log.h"
+#include "hw/qdev-properties.h"
+#include "hw/irq.h"
+
+#define DB_PRINT(fmt, args...) /* Nothing */
+/*#define DB_PRINT(fmt, args...) printf("%s: " fmt "\n", __func__, ## args)*/
+
+static void avr_mask_reset(DeviceState *dev)
+{
+ AVRMaskState *s = AVR_MASK(dev);
+
+ s->val = 0x00;
+
+ for (int i = 0; i < 8; i++) {
+ qemu_set_irq(s->irq[i], 0);
+ }
+}
+
+static uint64_t avr_mask_read(void *opaque, hwaddr offset, unsigned size)
+{
+ assert(size == 1);
+ assert(offset == 0);
+ AVRMaskState *s = opaque;
+
+ return (uint64_t)s->val;
+}
+
+static void avr_mask_write(void *opaque, hwaddr offset,
+ uint64_t val64, unsigned size)
+{
+ assert(size == 1);
+ assert(offset == 0);
+ AVRMaskState *s = opaque;
+ uint8_t val8 = val64;
+
+ DB_PRINT("write %d to offset %d", val8, (uint8_t)offset);
+
+ s->val = val8;
+ for (int i = 0; i < 8; i++) {
+ qemu_set_irq(s->irq[i], (val8 & (1 << i)) != 0);
+ }
+}
+
+static const MemoryRegionOps avr_mask_ops = {
+ .read = avr_mask_read,
+ .write = avr_mask_write,
+ .endianness = DEVICE_NATIVE_ENDIAN,
+ .impl = {.max_access_size = 1}
+};
+
+static void avr_mask_init(Object *dev)
+{
+ AVRMaskState *s = AVR_MASK(dev);
+ SysBusDevice *busdev = SYS_BUS_DEVICE(dev);
+
+ memory_region_init_io(&s->iomem, dev, &avr_mask_ops, s, TYPE_AVR_MASK,
+ 0x01);
+ sysbus_init_mmio(busdev, &s->iomem);
+
+ for (int i = 0; i < 8; i++) {
+ sysbus_init_irq(busdev, &s->irq[i]);
+ }
+ s->val = 0x00;
+}
+
+static void avr_mask_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+
+ dc->reset = avr_mask_reset;
+}
+
+static const TypeInfo avr_mask_info = {
+ .name = TYPE_AVR_MASK,
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(AVRMaskState),
+ .class_init = avr_mask_class_init,
+ .instance_init = avr_mask_init,
+};
+
+static void avr_mask_register_types(void)
+{
+ type_register_static(&avr_mask_info);
+}
+
+type_init(avr_mask_register_types)
diff --git a/hw/misc/Kconfig b/hw/misc/Kconfig
index bdd77d8020..74a1e9a241 100644
--- a/hw/misc/Kconfig
+++ b/hw/misc/Kconfig
@@ -131,4 +131,7 @@ config MAC_VIA
select MOS6522
select ADB
+config AVR_MASK
+ bool
+
source macio/Kconfig
diff --git a/hw/misc/Makefile.objs b/hw/misc/Makefile.objs
index da993f45b7..bbf17f651b 100644
--- a/hw/misc/Makefile.objs
+++ b/hw/misc/Makefile.objs
@@ -85,3 +85,5 @@ common-obj-$(CONFIG_NRF51_SOC) += nrf51_rng.o
obj-$(CONFIG_MAC_VIA) += mac_via.o
common-obj-$(CONFIG_GRLIB) += grlib_ahb_apb_pnp.o
+
+obj-$(CONFIG_AVR_MASK) += avr_mask.o
--
2.17.2 (Apple Git-113)
next prev parent reply other threads:[~2020-01-18 19:34 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-18 19:13 [PATCH v41 00/21] QEMU AVR 8 bit cores Michael Rolnik
2020-01-18 19:13 ` [PATCH v41 01/21] target/avr: Add outward facing interfaces and core CPU logic Michael Rolnik
2020-03-23 15:55 ` Philippe Mathieu-Daudé
2020-03-23 17:03 ` Michael Rolnik
2020-03-23 18:03 ` Richard Henderson
2020-03-23 19:19 ` Philippe Mathieu-Daudé
2020-03-23 20:14 ` Michael Rolnik
2020-04-12 9:14 ` Michael Rolnik
2020-04-15 6:25 ` Philippe Mathieu-Daudé
2020-01-18 19:13 ` [PATCH v41 02/21] target/avr: Add instruction helpers Michael Rolnik
2020-01-18 19:13 ` [PATCH v41 03/21] target/avr: Add instruction translation - Registers definition Michael Rolnik
2020-01-18 19:13 ` [PATCH v41 04/21] target/avr: Add instruction translation - Arithmetic and Logic Instructions Michael Rolnik
2020-01-18 19:14 ` [PATCH v41 05/21] target/avr: Add instruction translation - Branch Instructions Michael Rolnik
2020-01-18 19:14 ` [PATCH v41 06/21] target/avr: Add instruction translation - Data Transfer Instructions Michael Rolnik
2020-01-18 19:14 ` [PATCH v41 07/21] target/avr: Add instruction translation - Bit and Bit-test Instructions Michael Rolnik
2020-01-18 19:14 ` [PATCH v41 08/21] target/avr: Add instruction translation - MCU Control Instructions Michael Rolnik
2020-01-18 19:14 ` [PATCH v41 09/21] target/avr: Add instruction translation - CPU main translation function Michael Rolnik
2020-01-18 19:14 ` [PATCH v41 10/21] target/avr: Add instruction disassembly function Michael Rolnik
2020-01-18 19:14 ` [PATCH v41 11/21] hw/avr: Add limited support for USART peripheral Michael Rolnik
2020-01-18 19:14 ` [PATCH v41 12/21] hw/avr: Add limited support for 16 bit timer peripheral Michael Rolnik
2020-01-18 19:14 ` Michael Rolnik [this message]
2020-01-18 19:14 ` [PATCH v41 14/21] hw/avr: Add example board configuration Michael Rolnik
2020-01-21 16:36 ` Igor Mammedov
2020-01-21 17:03 ` Philippe Mathieu-Daudé
2020-01-18 19:14 ` [PATCH v41 15/21] target/avr: Add section about AVR into QEMU documentation Michael Rolnik
2020-01-18 19:14 ` [PATCH v41 16/21] target/avr: Register AVR support with the rest of QEMU Michael Rolnik
2020-01-18 19:14 ` [PATCH v41 17/21] target/avr: Add machine none test Michael Rolnik
2020-01-18 19:14 ` [PATCH v41 18/21] target/avr: Update build system Michael Rolnik
2020-01-18 19:14 ` [PATCH v41 19/21] target/avr: Add boot serial test Michael Rolnik
2020-01-18 19:14 ` [PATCH v41 20/21] target/avr: Add Avocado test Michael Rolnik
2020-01-18 19:14 ` [PATCH v41 21/21] target/avr: Update MAINTAINERS file Michael Rolnik
2020-01-20 22:10 ` [PATCH v41 00/21] QEMU AVR 8 bit cores Philippe Mathieu-Daudé
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200118191416.19934-14-mrolnik@gmail.com \
--to=mrolnik@gmail.com \
--cc=aleksandar.m.mail@gmail.com \
--cc=dovgaluk@ispras.ru \
--cc=imammedo@redhat.com \
--cc=me@xcancerberox.com.ar \
--cc=philmd@redhat.com \
--cc=qemu-devel@nongnu.org \
--cc=richard.henderson@linaro.org \
--cc=thuth@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).