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From: BALATON Zoltan <balaton@eik.bme.hu>
To: qemu-devel@nongnu.org, qemu-ppc@nongnu.org
Cc: Peter Maydell <peter.maydell@linaro.org>,
	Paolo Bonzini <pbonzini@redhat.com>,
	f4bug@amsat.org, David Gibson <david@gibson.dropbear.id.au>
Subject: [PATCH v6 4/8] vt82c686: Introduce abstract TYPE_VIA_ISA and base vt82c686b_isa on it
Date: Tue, 09 Mar 2021 21:28:49 +0100	[thread overview]
Message-ID: <ffd30415332be2d23f72072dc256cc6eee170f3d.1615321729.git.balaton@eik.bme.hu> (raw)
In-Reply-To: <cover.1615321729.git.balaton@eik.bme.hu>

To allow reusing ISA bridge emulation for vt8231_isa move the device
state of vt82c686b_isa emulation in an abstract via_isa class. This
change breaks migration back compatibility but this is not an issue
for Fuloong2E machine which is not versioned or migration supported.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
---
 hw/isa/vt82c686.c        | 70 ++++++++++++++++++++++------------------
 include/hw/pci/pci_ids.h |  2 +-
 2 files changed, 40 insertions(+), 32 deletions(-)

diff --git a/hw/isa/vt82c686.c b/hw/isa/vt82c686.c
index 72234bc4d1..5137f97f37 100644
--- a/hw/isa/vt82c686.c
+++ b/hw/isa/vt82c686.c
@@ -609,24 +609,48 @@ static const TypeInfo vt8231_superio_info = {
 };
 
 
-OBJECT_DECLARE_SIMPLE_TYPE(VT82C686BISAState, VT82C686B_ISA)
+#define TYPE_VIA_ISA "via-isa"
+OBJECT_DECLARE_SIMPLE_TYPE(ViaISAState, VIA_ISA)
 
-struct VT82C686BISAState {
+struct ViaISAState {
     PCIDevice dev;
     qemu_irq cpu_intr;
     ViaSuperIOState *via_sio;
 };
 
+static const VMStateDescription vmstate_via = {
+    .name = "via-isa",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .fields = (VMStateField[]) {
+        VMSTATE_PCI_DEVICE(dev, ViaISAState),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
+static const TypeInfo via_isa_info = {
+    .name          = TYPE_VIA_ISA,
+    .parent        = TYPE_PCI_DEVICE,
+    .instance_size = sizeof(ViaISAState),
+    .abstract      = true,
+    .interfaces    = (InterfaceInfo[]) {
+        { INTERFACE_CONVENTIONAL_PCI_DEVICE },
+        { },
+    },
+};
+
 static void via_isa_request_i8259_irq(void *opaque, int irq, int level)
 {
-    VT82C686BISAState *s = opaque;
+    ViaISAState *s = opaque;
     qemu_set_irq(s->cpu_intr, level);
 }
 
+/* TYPE_VT82C686B_ISA */
+
 static void vt82c686b_write_config(PCIDevice *d, uint32_t addr,
                                    uint32_t val, int len)
 {
-    VT82C686BISAState *s = VT82C686B_ISA(d);
+    ViaISAState *s = VIA_ISA(d);
 
     trace_via_isa_write(addr, val, len);
     pci_default_write_config(d, addr, val, len);
@@ -636,19 +660,9 @@ static void vt82c686b_write_config(PCIDevice *d, uint32_t addr,
     }
 }
 
-static const VMStateDescription vmstate_via = {
-    .name = "vt82c686b",
-    .version_id = 1,
-    .minimum_version_id = 1,
-    .fields = (VMStateField[]) {
-        VMSTATE_PCI_DEVICE(dev, VT82C686BISAState),
-        VMSTATE_END_OF_LIST()
-    }
-};
-
 static void vt82c686b_isa_reset(DeviceState *dev)
 {
-    VT82C686BISAState *s = VT82C686B_ISA(dev);
+    ViaISAState *s = VIA_ISA(dev);
     uint8_t *pci_conf = s->dev.config;
 
     pci_set_long(pci_conf + PCI_CAPABILITY_LIST, 0x000000c0);
@@ -668,7 +682,7 @@ static void vt82c686b_isa_reset(DeviceState *dev)
 
 static void vt82c686b_realize(PCIDevice *d, Error **errp)
 {
-    VT82C686BISAState *s = VT82C686B_ISA(d);
+    ViaISAState *s = VIA_ISA(d);
     DeviceState *dev = DEVICE(d);
     ISABus *isa_bus;
     qemu_irq *isa_irq;
@@ -692,7 +706,7 @@ static void vt82c686b_realize(PCIDevice *d, Error **errp)
     }
 }
 
-static void via_class_init(ObjectClass *klass, void *data)
+static void vt82c686b_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
@@ -700,28 +714,21 @@ static void via_class_init(ObjectClass *klass, void *data)
     k->realize = vt82c686b_realize;
     k->config_write = vt82c686b_write_config;
     k->vendor_id = PCI_VENDOR_ID_VIA;
-    k->device_id = PCI_DEVICE_ID_VIA_ISA_BRIDGE;
+    k->device_id = PCI_DEVICE_ID_VIA_82C686B_ISA;
     k->class_id = PCI_CLASS_BRIDGE_ISA;
     k->revision = 0x40;
     dc->reset = vt82c686b_isa_reset;
     dc->desc = "ISA bridge";
     dc->vmsd = &vmstate_via;
-    /*
-     * Reason: part of VIA VT82C686 southbridge, needs to be wired up,
-     * e.g. by mips_fuloong2e_init()
-     */
+    /* Reason: part of VIA VT82C686 southbridge, needs to be wired up */
     dc->user_creatable = false;
 }
 
-static const TypeInfo via_info = {
+static const TypeInfo vt82c686b_isa_info = {
     .name          = TYPE_VT82C686B_ISA,
-    .parent        = TYPE_PCI_DEVICE,
-    .instance_size = sizeof(VT82C686BISAState),
-    .class_init    = via_class_init,
-    .interfaces = (InterfaceInfo[]) {
-        { INTERFACE_CONVENTIONAL_PCI_DEVICE },
-        { },
-    },
+    .parent        = TYPE_VIA_ISA,
+    .instance_size = sizeof(ViaISAState),
+    .class_init    = vt82c686b_class_init,
 };
 
 
@@ -733,7 +740,8 @@ static void vt82c686b_register_types(void)
     type_register_static(&via_superio_info);
     type_register_static(&vt82c686b_superio_info);
     type_register_static(&vt8231_superio_info);
-    type_register_static(&via_info);
+    type_register_static(&via_isa_info);
+    type_register_static(&vt82c686b_isa_info);
 }
 
 type_init(vt82c686b_register_types)
diff --git a/include/hw/pci/pci_ids.h b/include/hw/pci/pci_ids.h
index ea28dcc850..aa3f67eaa4 100644
--- a/include/hw/pci/pci_ids.h
+++ b/include/hw/pci/pci_ids.h
@@ -204,7 +204,7 @@
 #define PCI_VENDOR_ID_XILINX             0x10ee
 
 #define PCI_VENDOR_ID_VIA                0x1106
-#define PCI_DEVICE_ID_VIA_ISA_BRIDGE     0x0686
+#define PCI_DEVICE_ID_VIA_82C686B_ISA    0x0686
 #define PCI_DEVICE_ID_VIA_IDE            0x0571
 #define PCI_DEVICE_ID_VIA_UHCI           0x3038
 #define PCI_DEVICE_ID_VIA_82C686B_PM     0x3057
-- 
2.21.3



  parent reply	other threads:[~2021-03-09 21:02 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-09 20:28 [PATCH v6 0/8] Pegasos2 emulation BALATON Zoltan
2021-03-02  8:05 ` [PATCH v6 6/8] hw/isa/Kconfig: Add missing dependency VIA VT82C686 -> APM BALATON Zoltan
2021-04-12 18:31   ` Richard Henderson
2021-03-09 20:28 ` [PATCH v6 1/8] vt82c686: Implement control of serial port io ranges via config regs BALATON Zoltan
2021-03-09 20:28 ` [PATCH v6 5/8] vt82c686: Add emulation of VT8231 south bridge BALATON Zoltan
2021-03-09 20:28 ` [PATCH v6 3/8] vt82c686: Add VT8231_SUPERIO based on VIA_SUPERIO BALATON Zoltan
2021-03-09 20:28 ` BALATON Zoltan [this message]
2021-03-10  0:02   ` [PATCH v6 4/8] vt82c686: Introduce abstract TYPE_VIA_ISA and base vt82c686b_isa on it Philippe Mathieu-Daudé
2021-03-10  2:36     ` BALATON Zoltan
2021-03-09 20:28 ` [PATCH v6 2/8] vt82c686: QOM-ify superio related functionality BALATON Zoltan
2021-03-09 23:58   ` Philippe Mathieu-Daudé
2021-03-09 20:28 ` [PATCH v6 7/8] hw/pci-host: Add emulation of Marvell MV64361 PPC system controller BALATON Zoltan
2021-03-09 20:28 ` [PATCH v6 8/8] hw/ppc: Add emulation of Genesi/bPlan Pegasos II BALATON Zoltan

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