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-rw-r--r--hw/virtio/virtio-pci.c92
-rw-r--r--hw/virtio/virtio-pci.h4
2 files changed, 55 insertions, 41 deletions
diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
index 771bbd5224..76653a7fcd 100644
--- a/hw/virtio/virtio-pci.c
+++ b/hw/virtio/virtio-pci.c
@@ -1250,32 +1250,26 @@ static void virtio_pci_modern_regions_init(VirtIOPCIProxy *proxy)
memory_region_init_io(&proxy->common.mr, OBJECT(proxy),
&common_ops,
proxy,
- "virtio-pci-common", 0x1000);
- proxy->common.offset = 0x0;
- proxy->common.type = VIRTIO_PCI_CAP_COMMON_CFG;
+ "virtio-pci-common",
+ proxy->common.size);
memory_region_init_io(&proxy->isr.mr, OBJECT(proxy),
&isr_ops,
proxy,
- "virtio-pci-isr", 0x1000);
- proxy->isr.offset = 0x1000;
- proxy->isr.type = VIRTIO_PCI_CAP_ISR_CFG;
+ "virtio-pci-isr",
+ proxy->isr.size);
memory_region_init_io(&proxy->device.mr, OBJECT(proxy),
&device_ops,
virtio_bus_get_device(&proxy->bus),
- "virtio-pci-device", 0x1000);
- proxy->device.offset = 0x2000;
- proxy->device.type = VIRTIO_PCI_CAP_DEVICE_CFG;
+ "virtio-pci-device",
+ proxy->device.size);
memory_region_init_io(&proxy->notify.mr, OBJECT(proxy),
&notify_ops,
virtio_bus_get_device(&proxy->bus),
"virtio-pci-notify",
- QEMU_VIRTIO_PCI_QUEUE_MEM_MULT *
- VIRTIO_QUEUE_MAX);
- proxy->notify.offset = 0x3000;
- proxy->notify.type = VIRTIO_PCI_CAP_NOTIFY_CFG;
+ proxy->notify.size);
}
static void virtio_pci_modern_region_map(VirtIOPCIProxy *proxy,
@@ -1287,8 +1281,9 @@ static void virtio_pci_modern_region_map(VirtIOPCIProxy *proxy,
&region->mr);
cap->cfg_type = region->type;
+ cap->bar = proxy->modern_mem_bar;
cap->offset = cpu_to_le32(region->offset);
- cap->length = cpu_to_le32(memory_region_size(&region->mr));
+ cap->length = cpu_to_le32(region->size);
virtio_pci_add_mem_cap(proxy, cap);
}
@@ -1303,22 +1298,6 @@ static void virtio_pci_device_plugged(DeviceState *d, Error **errp)
uint32_t size;
VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
- /*
- * virtio pci bar layout
- *
- * region 0 -- virtio legacy io bar
- * region 1 -- msi-x bar
- * region 2+3 -- not used by virtio-pci
- * region 4+5 -- virtio modern memory (64bit) bar
- *
- * Regions 2+3 can be used by VirtIOPCIProxy subclasses.
- * virtio-vga places the vga framebuffer there.
- *
- */
- uint32_t legacy_io_bar = 0;
- uint32_t msix_bar = 1;
- uint32_t modern_mem_bar = 4;
-
config = proxy->pci_dev.config;
if (proxy->class_code) {
pci_config_set_class(config, proxy->class_code);
@@ -1343,11 +1322,9 @@ static void virtio_pci_device_plugged(DeviceState *d, Error **errp)
if (modern) {
struct virtio_pci_cap cap = {
.cap_len = sizeof cap,
- .bar = modern_mem_bar,
};
struct virtio_pci_notify_cap notify = {
.cap.cap_len = sizeof notify,
- .cap.bar = modern_mem_bar,
.notify_off_multiplier =
cpu_to_le32(QEMU_VIRTIO_PCI_QUEUE_MEM_MULT),
};
@@ -1355,15 +1332,12 @@ static void virtio_pci_device_plugged(DeviceState *d, Error **errp)
/* TODO: add io access for speed */
virtio_add_feature(&vdev->host_features, VIRTIO_F_VERSION_1);
- memory_region_init(&proxy->modern_bar, OBJECT(proxy), "virtio-pci",
- 2 * QEMU_VIRTIO_PCI_QUEUE_MEM_MULT *
- VIRTIO_QUEUE_MAX);
virtio_pci_modern_regions_init(proxy);
virtio_pci_modern_region_map(proxy, &proxy->common, &cap);
virtio_pci_modern_region_map(proxy, &proxy->isr, &cap);
virtio_pci_modern_region_map(proxy, &proxy->device, &cap);
virtio_pci_modern_region_map(proxy, &proxy->notify, &notify.cap);
- pci_register_bar(&proxy->pci_dev, modern_mem_bar,
+ pci_register_bar(&proxy->pci_dev, proxy->modern_mem_bar,
PCI_BASE_ADDRESS_SPACE_MEMORY |
PCI_BASE_ADDRESS_MEM_PREFETCH |
PCI_BASE_ADDRESS_MEM_TYPE_64,
@@ -1371,7 +1345,8 @@ static void virtio_pci_device_plugged(DeviceState *d, Error **errp)
}
if (proxy->nvectors &&
- msix_init_exclusive_bar(&proxy->pci_dev, proxy->nvectors, msix_bar)) {
+ msix_init_exclusive_bar(&proxy->pci_dev, proxy->nvectors,
+ proxy->msix_bar)) {
error_report("unable to init msix vectors to %" PRIu32,
proxy->nvectors);
proxy->nvectors = 0;
@@ -1390,7 +1365,7 @@ static void virtio_pci_device_plugged(DeviceState *d, Error **errp)
&virtio_pci_config_ops,
proxy, "virtio-pci", size);
- pci_register_bar(&proxy->pci_dev, legacy_io_bar,
+ pci_register_bar(&proxy->pci_dev, proxy->legacy_io_bar,
PCI_BASE_ADDRESS_SPACE_IO, &proxy->bar);
}
@@ -1410,12 +1385,47 @@ static void virtio_pci_device_unplugged(DeviceState *d)
static void virtio_pci_realize(PCIDevice *pci_dev, Error **errp)
{
- VirtIOPCIProxy *dev = VIRTIO_PCI(pci_dev);
+ VirtIOPCIProxy *proxy = VIRTIO_PCI(pci_dev);
VirtioPCIClass *k = VIRTIO_PCI_GET_CLASS(pci_dev);
- virtio_pci_bus_new(&dev->bus, sizeof(dev->bus), dev);
+ /*
+ * virtio pci bar layout used by default.
+ * subclasses can re-arrange things if needed.
+ *
+ * region 0 -- virtio legacy io bar
+ * region 1 -- msi-x bar
+ * region 4+5 -- virtio modern memory (64bit) bar
+ *
+ */
+ proxy->legacy_io_bar = 0;
+ proxy->msix_bar = 1;
+ proxy->modern_mem_bar = 4;
+
+ proxy->common.offset = 0x0;
+ proxy->common.size = 0x1000;
+ proxy->common.type = VIRTIO_PCI_CAP_COMMON_CFG;
+
+ proxy->isr.offset = 0x1000;
+ proxy->isr.size = 0x1000;
+ proxy->isr.type = VIRTIO_PCI_CAP_ISR_CFG;
+
+ proxy->device.offset = 0x2000;
+ proxy->device.size = 0x1000;
+ proxy->device.type = VIRTIO_PCI_CAP_DEVICE_CFG;
+
+ proxy->notify.offset = 0x3000;
+ proxy->notify.size =
+ QEMU_VIRTIO_PCI_QUEUE_MEM_MULT * VIRTIO_QUEUE_MAX;
+ proxy->notify.type = VIRTIO_PCI_CAP_NOTIFY_CFG;
+
+ /* subclasses can enforce modern, so do this unconditionally */
+ memory_region_init(&proxy->modern_bar, OBJECT(proxy), "virtio-pci",
+ 2 * QEMU_VIRTIO_PCI_QUEUE_MEM_MULT *
+ VIRTIO_QUEUE_MAX);
+
+ virtio_pci_bus_new(&proxy->bus, sizeof(proxy->bus), proxy);
if (k->realize) {
- k->realize(dev, errp);
+ k->realize(proxy, errp);
}
}
diff --git a/hw/virtio/virtio-pci.h b/hw/virtio/virtio-pci.h
index ea1343ded3..ff5ab71e76 100644
--- a/hw/virtio/virtio-pci.h
+++ b/hw/virtio/virtio-pci.h
@@ -94,6 +94,7 @@ typedef struct VirtioPCIClass {
typedef struct VirtIOPCIRegion {
MemoryRegion mr;
uint32_t offset;
+ uint32_t size;
uint32_t type;
} VirtIOPCIRegion;
@@ -105,6 +106,9 @@ struct VirtIOPCIProxy {
VirtIOPCIRegion device;
VirtIOPCIRegion notify;
MemoryRegion modern_bar;
+ uint32_t legacy_io_bar;
+ uint32_t msix_bar;
+ uint32_t modern_mem_bar;
uint32_t flags;
uint32_t class_code;
uint32_t nvectors;
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-22 21:19:06 +0000