Based on <https://tools.oasis-open.org/version-control/browse/wsvn/virtio/virtio-v1.0-wd01-part1-specification.txt?rev=159>, which is the last text format revision.
Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Laszlo Ersek <[email protected]> --- OvmfPkg/Include/IndustryStandard/VirtioBlk.h | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/OvmfPkg/Include/IndustryStandard/VirtioBlk.h b/OvmfPkg/Include/IndustryStandard/VirtioBlk.h index a9f91e4..2ce528a 100644 --- a/OvmfPkg/Include/IndustryStandard/VirtioBlk.h +++ b/OvmfPkg/Include/IndustryStandard/VirtioBlk.h @@ -26,6 +26,13 @@ // #pragma pack(1) typedef struct { + UINT8 PhysicalBlockExp; // # of logical blocks per physical block (log2) + UINT8 AlignmentOffset; // offset of first aligned logical block + UINT16 MinIoSize; // suggested minimum I/O size in blocks + UINT32 OptIoSize; // optimal (suggested maximum) I/O size in blocks +} VIRTIO_BLK_TOPOLOGY; + +typedef struct { UINT64 Capacity; UINT32 SizeMax; UINT32 SegMax; @@ -33,6 +40,7 @@ typedef struct { UINT8 Heads; UINT8 Sectors; UINT32 BlkSize; + VIRTIO_BLK_TOPOLOGY Topology; } VIRTIO_BLK_CONFIG; #pragma pack() @@ -47,9 +55,11 @@ typedef struct { #define VIRTIO_BLK_F_BLK_SIZE BIT6 // treated as "logical block size" in // practice; actual host side // implementation negotiates "optimal" - // block size separately + // block size separately, via + // VIRTIO_BLK_F_TOPOLOGY #define VIRTIO_BLK_F_SCSI BIT7 #define VIRTIO_BLK_F_FLUSH BIT9 // identical to "write cache enabled" +#define VIRTIO_BLK_F_TOPOLOGY BIT10 // information on optimal I/O alignment // // We keep the status byte separate from the rest of the virtio-blk request -- 1.8.3.1 ------------------------------------------------------------------------------ Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831&iu=/4140/ostg.clktrk _______________________________________________ edk2-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/edk2-devel
