[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [RFC] hw/i386: Composite Bus and PCI device
From: |
David Kiarie |
Subject: |
[Qemu-devel] [RFC] hw/i386: Composite Bus and PCI device |
Date: |
Wed, 8 Jun 2016 13:00:32 +0300 |
Sample composite SysBus and PCI device similar to AMD IOMMU setup
Signed-off-by: David Kiarie <address@hidden>
---
hw/i386/compositedevice.c | 113 ++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 113 insertions(+)
create mode 100644 hw/i386/compositedevice.c
diff --git a/hw/i386/compositedevice.c b/hw/i386/compositedevice.c
new file mode 100644
index 0000000..349e98d
--- /dev/null
+++ b/hw/i386/compositedevice.c
@@ -0,0 +1,113 @@
+#include "qemu/osdep.h"
+#include "hw/pci/pci.h"
+#include "hw/i386/x86-iommu.h"
+#include "hw/pci/msi.h"
+#include "hw/pci/pci_bus.h"
+#include "hw/sysbus.h"
+#include "qom/object.h"
+#include "hw/i386/pc.h"
+
+#define AMDVI_MMIO_SIZE 0x4000
+#define AMDVI_CAPAB_SIZE 0x18
+#define AMDVI_CAPAB_REG_SIZE 0x04
+#define AMDVI_CAPAB_ID_SEC 0xff
+
+#define TYPE_AMD_IOMMU_DEVICE "amd-iommu"
+#define AMD_IOMMU_DEVICE(obj)\
+ OBJECT_CHECK(AMDVIState, (obj), TYPE_AMD_IOMMU_DEVICE)
+
+#define TYPE_AMD_IOMMU_PCI "AMDVI-PCI"
+#define AMD_IOMMU_PCI(obj)\
+ OBJECT_CHECK(AMDVIPCIState, (obj), TYPE_AMD_IOMMU_PCI)
+
+typedef struct AMDVIPCIState {
+ PCIDevice dev;
+ /* PCI specific properties */
+ uint8_t *capab; /* capabilities registers */
+ uint32_t capab_offset; /* capability offset pointer */
+} AMDVIPCIState;
+
+typedef struct AMDVIState {
+ X86IOMMUState iommu; /* IOMMU bus device */
+ AMDVIPCIState *dev; /* IOMMU PCI device */
+
+ uint8_t mmior[AMDVI_MMIO_SIZE]; /* read/write MMIO */
+ uint8_t w1cmask[AMDVI_MMIO_SIZE]; /* read/write 1 clear mask */
+ uint8_t romask[AMDVI_MMIO_SIZE]; /* MMIO read/only mask */
+} AMDVIState;
+
+static void amdvi_init(AMDVIState *s)
+{
+ /* reset PCI device */
+ pci_config_set_vendor_id(s->dev->dev.config, PCI_VENDOR_ID_AMD);
+ pci_config_set_prog_interface(s->dev->dev.config, 00);
+ pci_config_set_class(s->dev->dev.config, 0x0806);
+}
+
+static void amdvi_reset(DeviceState *dev)
+{
+ AMDVIState *s = AMD_IOMMU_DEVICE(dev);
+
+ amdvi_init(s);
+}
+
+static void amdvi_realize(DeviceState *dev, Error **errp)
+{
+ AMDVIState *s = AMD_IOMMU_DEVICE(dev);
+ PCIBus *bus = PC_MACHINE(qdev_get_machine())->bus;
+
+ /* This device should take care of IOMMU PCI properties */
+ PCIDevice *createddev = pci_create_simple(bus, -1, TYPE_AMD_IOMMU_PCI);
+ AMDVIPCIState *amdpcidevice = container_of(createddev, AMDVIPCIState, dev);
+ s->dev = amdpcidevice;
+}
+
+static void amdvi_class_init(ObjectClass *klass, void* data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ X86IOMMUClass *dc_class = X86_IOMMU_CLASS(klass);
+
+ dc->reset = amdvi_reset;
+
+ dc_class->realize = amdvi_realize;
+}
+
+static const TypeInfo amdvi = {
+ .name = TYPE_AMD_IOMMU_DEVICE,
+ .parent = TYPE_X86_IOMMU_DEVICE,
+ .instance_size = sizeof(AMDVIState),
+ .class_init = amdvi_class_init
+};
+
+static void amdviPCI_realize(PCIDevice *dev, Error **errp)
+{
+ AMDVIPCIState *s = container_of(dev, AMDVIPCIState, dev);
+
+ /* we need to report certain PCI capabilities */
+ s->capab_offset = pci_add_capability(&s->dev, AMDVI_CAPAB_ID_SEC, 0,
+ AMDVI_CAPAB_SIZE);
+ pci_add_capability(&s->dev, PCI_CAP_ID_MSI, 0, AMDVI_CAPAB_REG_SIZE);
+ pci_add_capability(&s->dev, PCI_CAP_ID_HT, 0, AMDVI_CAPAB_REG_SIZE);
+}
+
+static void amdviPCI_class_init(ObjectClass *klass, void* data)
+{
+ PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
+
+ k->realize = amdviPCI_realize;
+}
+
+static const TypeInfo amdviPCI = {
+ .name = TYPE_AMD_IOMMU_PCI,
+ .parent = TYPE_PCI_DEVICE,
+ .instance_size = sizeof(AMDVIPCIState),
+ .class_init = amdviPCI_class_init
+};
+
+static void amdviPCI_register_types(void)
+{
+ type_register_static(&amdviPCI);
+ type_register_static(&amdvi);
+}
+
+type_init(amdviPCI_register_types);
--
2.1.4