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virtio-pci: add virtio_pci_modern_region_map()

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Add function to map modern virtio regions.
Add offset to VirtIOPCIRegion.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Gerd Hoffmann 2015-06-04 12:34:35 +02:00 committed by Michael S. Tsirkin
parent 1141ce2190
commit a3cc2e8159
2 changed files with 20 additions and 6 deletions
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25
hw/virtio/virtio-pci.c
View File

@ -1251,20 +1251,35 @@ static void virtio_pci_modern_regions_init(VirtIOPCIProxy *proxy)
&common_ops,
proxy,
"virtio-pci-common", 0x1000);
proxy->common.offset = 0x0;
memory_region_init_io(&proxy->isr.mr, OBJECT(proxy),
&isr_ops,
proxy,
"virtio-pci-isr", 0x1000);
proxy->isr.offset = 0x1000;
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;
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;
}
static void virtio_pci_modern_region_map(VirtIOPCIProxy *proxy,
VirtIOPCIRegion *region)
{
memory_region_add_subregion(&proxy->modern_bar,
region->offset,
&region->mr);
}
/* This is called by virtio-bus just after the device is plugged. */
@ -1359,12 +1374,10 @@ static void virtio_pci_device_plugged(DeviceState *d, Error **errp)
2 * QEMU_VIRTIO_PCI_QUEUE_MEM_MULT *
VIRTIO_QUEUE_MAX);
virtio_pci_modern_regions_init(proxy);
memory_region_add_subregion(&proxy->modern_bar, 0, &proxy->common.mr);
memory_region_add_subregion(&proxy->modern_bar, 0x1000, &proxy->isr.mr);
memory_region_add_subregion(&proxy->modern_bar, 0x2000,
&proxy->device.mr);
memory_region_add_subregion(&proxy->modern_bar, 0x3000,
&proxy->notify.mr);
virtio_pci_modern_region_map(proxy, &proxy->common);
virtio_pci_modern_region_map(proxy, &proxy->isr);
virtio_pci_modern_region_map(proxy, &proxy->device);
virtio_pci_modern_region_map(proxy, &proxy->notify);
pci_register_bar(&proxy->pci_dev, modern_mem_bar,
PCI_BASE_ADDRESS_SPACE_MEMORY |
PCI_BASE_ADDRESS_MEM_PREFETCH |

1
hw/virtio/virtio-pci.h
View File

@ -93,6 +93,7 @@ typedef struct VirtioPCIClass {
typedef struct VirtIOPCIRegion {
MemoryRegion mr;
uint32_t offset;
} VirtIOPCIRegion;
struct VirtIOPCIProxy {