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OvmfPkg: regroup virtio config fields into generic & specific structs 

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13839 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
jljusten 2012-10-12 18:53:06 +00:00
parent 2c3239f305
commit 55c3443a4f
2 changed files with 26 additions and 20 deletions
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22
OvmfPkg/Include/IndustryStandard/Virtio.h
View File

@ -96,7 +96,6 @@ typedef struct {
//
// virtio-0.9.5, 2.2.2 Virtio Header -- no MSI-X
// virtio-0.9.5, Appendix D
//
#pragma pack(1)
typedef struct {
@ -108,13 +107,20 @@ typedef struct {
UINT16 VhdrQueueNotify;
UINT8 VhdrDeviceStatus;
UINT8 VhdrISR;
UINT64 VhdrCapacity;
UINT32 VhdrSizeMax;
UINT32 VhdrSegMax;
UINT16 VhdrCylinders;
UINT8 VhdrHeads;
UINT8 VhdrSectors;
UINT32 VhdrBlkSize;
} VIRTIO_HDR;
//
// virtio-0.9.5, Appendix D: Block Device
//
typedef struct {
VIRTIO_HDR Generic;
UINT64 VhdrCapacity;
UINT32 VhdrSizeMax;
UINT32 VhdrSegMax;
UINT16 VhdrCylinders;
UINT8 VhdrHeads;
UINT8 VhdrSectors;
UINT32 VhdrBlkSize;
} VBLK_HDR;
#pragma pack()

24
OvmfPkg/VirtioBlkDxe/VirtioBlk.c
View File

@ -538,7 +538,7 @@ SynchronousRequest (
// OK. virtio-blk's only virtqueue is #0, called "requestq" (see Appendix D).
//
MemoryFence();
if (EFI_ERROR (VIRTIO_CFG_WRITE (Dev, VhdrQueueNotify, 0))) {
if (EFI_ERROR (VIRTIO_CFG_WRITE (Dev, Generic.VhdrQueueNotify, 0))) {
return EFI_DEVICE_ERROR;
}
@ -984,19 +984,19 @@ VirtioBlkInit (
// Execute virtio-0.9.5, 2.2.1 Device Initialization Sequence.
//
NextDevStat = 0; // step 1 -- reset device
Status = VIRTIO_CFG_WRITE (Dev, VhdrDeviceStatus, NextDevStat);
Status = VIRTIO_CFG_WRITE (Dev, Generic.VhdrDeviceStatus, NextDevStat);
if (EFI_ERROR (Status)) {
goto Failed;
}
NextDevStat |= VSTAT_ACK; // step 2 -- acknowledge device presence
Status = VIRTIO_CFG_WRITE (Dev, VhdrDeviceStatus, NextDevStat);
Status = VIRTIO_CFG_WRITE (Dev, Generic.VhdrDeviceStatus, NextDevStat);
if (EFI_ERROR (Status)) {
goto Failed;
}
NextDevStat |= VSTAT_DRIVER; // step 3 -- we know how to drive it
Status = VIRTIO_CFG_WRITE (Dev, VhdrDeviceStatus, NextDevStat);
Status = VIRTIO_CFG_WRITE (Dev, Generic.VhdrDeviceStatus, NextDevStat);
if (EFI_ERROR (Status)) {
goto Failed;
}
@ -1004,7 +1004,7 @@ VirtioBlkInit (
//
// step 4a -- retrieve and validate features
//
Status = VIRTIO_CFG_READ (Dev, VhdrDeviceFeatureBits, &Features);
Status = VIRTIO_CFG_READ (Dev, Generic.VhdrDeviceFeatureBits, &Features);
if (EFI_ERROR (Status)) {
goto Failed;
}
@ -1039,11 +1039,11 @@ VirtioBlkInit (
//
// step 4b -- allocate virtqueue
//
Status = VIRTIO_CFG_WRITE (Dev, VhdrQueueSelect, 0);
Status = VIRTIO_CFG_WRITE (Dev, Generic.VhdrQueueSelect, 0);
if (EFI_ERROR (Status)) {
goto Failed;
}
Status = VIRTIO_CFG_READ (Dev, VhdrQueueSize, &QueueSize);
Status = VIRTIO_CFG_READ (Dev, Generic.VhdrQueueSize, &QueueSize);
if (EFI_ERROR (Status)) {
goto Failed;
}
@ -1061,7 +1061,7 @@ VirtioBlkInit (
// step 4c -- Report GPFN (guest-physical frame number) of queue. If anything
// fails from here on, we must release the ring resources.
//
Status = VIRTIO_CFG_WRITE (Dev, VhdrQueueAddress,
Status = VIRTIO_CFG_WRITE (Dev, Generic.VhdrQueueAddress,
(UINTN) Dev->Ring.Base >> EFI_PAGE_SHIFT);
if (EFI_ERROR (Status)) {
goto ReleaseQueue;
@ -1073,7 +1073,7 @@ VirtioBlkInit (
// device-independent (known or unknown) VIRTIO_F_* capabilities (see
// Appendix B).
//
Status = VIRTIO_CFG_WRITE (Dev, VhdrGuestFeatureBits, 0);
Status = VIRTIO_CFG_WRITE (Dev, Generic.VhdrGuestFeatureBits, 0);
if (EFI_ERROR (Status)) {
goto ReleaseQueue;
}
@ -1082,7 +1082,7 @@ VirtioBlkInit (
// step 6 -- initialization complete
//
NextDevStat |= VSTAT_DRIVER_OK;
Status = VIRTIO_CFG_WRITE (Dev, VhdrDeviceStatus, NextDevStat);
Status = VIRTIO_CFG_WRITE (Dev, Generic.VhdrDeviceStatus, NextDevStat);
if (EFI_ERROR (Status)) {
goto ReleaseQueue;
}
@ -1118,7 +1118,7 @@ Failed:
// Status. PCI IO access failure here should not mask the original error.
//
NextDevStat |= VSTAT_FAILED;
VIRTIO_CFG_WRITE (Dev, VhdrDeviceStatus, NextDevStat);
VIRTIO_CFG_WRITE (Dev, Generic.VhdrDeviceStatus, NextDevStat);
return Status; // reached only via Failed above
}
@ -1145,7 +1145,7 @@ VirtioBlkUninit (
// VIRTIO_CFG_WRITE() returns, the host will have learned to stay away from
// the old comms area.
//
VIRTIO_CFG_WRITE (Dev, VhdrDeviceStatus, 0);
VIRTIO_CFG_WRITE (Dev, Generic.VhdrDeviceStatus, 0);
VirtioRingUninit (&Dev->Ring);