It can fix the potential failure to return EFI_OUT_OF_RESOURCES of the second variable set of large variable.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14822 6f19259b-4bc3-4df7-8a09-765794883524
Create rules to determine whether iSCSI need DHCP protocol in current configuration by examining user’s configuration data in DriverBindingSupported().
Signed-off-by: Wu Jiaxin <jiaxin.wu@intel.com >
Reviewed-by: Ye Ting <ting.ye@intel.com>
Reviewed-by: Fu Siyuan <siyuan.fu@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14802 6f19259b-4bc3-4df7-8a09-765794883524
2. Add support to find section by instance rather than only 0 at PEI phase.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14763 6f19259b-4bc3-4df7-8a09-765794883524
Signed-off-by: Fu Siyuan <siyuan.fu@intel.com>
Reviewed-by: Ye Ting <ting.ye@intel.com>
Reviewed-by: Jin Eric <eric.jin@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14682 6f19259b-4bc3-4df7-8a09-765794883524
1. DiskIo2 shouldn't signal the event when the *Ex interface returns failure status per the UEFI spec.
2. PartitionDxe should close DiskIo2 protocol when error happens in DriverBindingStart() otherwise Fat driver cannot open the DiskIo2 BY_DRIVER.
3. PartitionDxe should create event using TPL_NOTIFY instead of TPL_CALLBACK otherwise asynchronous FileIo may be blocked.
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14680 6f19259b-4bc3-4df7-8a09-765794883524
1) The Queue size field in create I/O submission/completion queue cmds is 0-based. the current code is 1-based.
2) a typo on allocated memory page size. it's inconsistent that some places is using 4 pages, but a place is using 6 pages.
3) a typo on PRP/SGL mechanism judgment. should directly use Psdt field rather than Opc field.
4) some platforms may not support UINT64 width access on MMIO register. Fix it to use two 32-bit width access.
Signed-off-by: Feng Tian <feng.tian@intel.com>
Reviewed-by: Kinney Michael <michael.d.kinney@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14657 6f19259b-4bc3-4df7-8a09-765794883524
DiskIoCreateSubtaskList() may split the transfer into three segments:
- a leading segment, called underrun, which is the fractional, trailing
subset of the first underlying block,
- a middle segment, which is an integral multiple of underlying blocks,
- a trailing segment, called overrun, which is the fractional, leading
subset of the last underlying block.
This is an example read from the /EFI/BOOT/BOOTX64.EFI file, on the
RHEL-6.4 installation ISO (debug log enabled with EFI_D_BLKIO). The
underlying block size is 2048 bytes (IDE CD-ROM).
DiskIo: Create subtasks for task: Offset/BufferSize/Buffer = 0000000000004600/00002000/BD890018
R:Lba/Offset/Length/WorkingBuffer/Buffer = 0000000000000008/00000600/00000200/BD90D000/BD890018
R:Lba/Offset/Length/WorkingBuffer/Buffer = 000000000000000C/00000000/00000600/BD90D000/BD890218
R:Lba/Offset/Length/WorkingBuffer/Buffer = 0000000000000009/00000000/00001800/00000000/BD890218
The first line corresponds to the underrun.
The second line corresponds to the overrun.
The third line corresponds to the middle segment.
In decimal:
- task: read 8192 bytes from offset 17920, storing it at BD890018
- underrun:
- read block 8 [16384..18432) into the transfer area,
- copy 512 bytes from offset 1536 of the transfer area to BD890018
(target buffer offset 0, running total: 512)
- middle segment:
- read blocks 9, 10, 11 [18432..24576) into the transfer area,
- copy 6144 bytes from offset 0 of the transfer area to BD890218
(target buffer offset 512, running total: 6656)
- overrun:
- read block 12 [24576..26624) into the transfer area,
- copy 1536 bytes from offset 0 of the transfer area to BD890218 (!!!)
(target buffer offset 512 (!!!), running total 8192)
The values marked with (!!!) constitute the bug --
DiskIoCreateSubtaskList() doesn't take the size of the middle segment into
account when it calculates the destination (for reads) or source (for
writes) pointer for the overrun. This leads to data corruption.
When reading, data is copied form the transfer area to the target buffer
with
CopyMem (Subtask->Buffer, Subtask->WorkingBuffer + Subtask->Offset, Subtask->Length);
calls in DiskIo2OnReadWriteComplete() for nonblocking reads, and in
DiskIo2ReadWriteDisk() for blocking reads. Therefore it's enough to adjust
Subtask->Buffer when it is initialized. (See BD891A18 below.)
DiskIo: Create subtasks for task: Offset/BufferSize/Buffer = 0000000000004600/00002000/BD890018
R:Lba/Offset/Length/WorkingBuffer/Buffer = 0000000000000008/00000600/00000200/BD90D000/BD890018
R:Lba/Offset/Length/WorkingBuffer/Buffer = 000000000000000C/00000000/00000600/BD90D000/BD891A18
R:Lba/Offset/Length/WorkingBuffer/Buffer = 0000000000000009/00000000/00001800/00000000/BD890218
The patched call to DiskIoCreateSubtask() is also executed for write
requests. The changed Subtask->Buffer initialization fixes the "overrun
half writes" in DiskIo2ReadWriteDisk() too:
//
// A sub task before this one should be a block read operation, causing
// the WorkingBuffer filled with the entire one block data.
//
CopyMem (Subtask->WorkingBuffer + Subtask->Offset, Subtask->Buffer, Subtask->Length);
This code doubles for underrun and overrun half-writes. The patch doesn't
modify the underrun case.
If we're storing the overrun at the beginning of the pre-read last block
(which we're going to write out as a full block), then
- Subtask->Offset == 0,
- Subtask->Length == OverRun,
- the first byte *not* accessed in the source area is
((Buffer + UnderRunLength) + BufferSize) + OverRun.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14602 6f19259b-4bc3-4df7-8a09-765794883524
Jeff Fan
Star Zeng
Feng Tian
Eric Dong
Wu Jiaxin
Elvin Li
Ye Ting
Sergey Isakov
czhang46
Liming Gao
Samer El-Haj-Mahmoud
Samer El-Haj-Mahmoud elhaj
Shumin Qiu
Fu Siyuan
Ruiyu Ni
Chao Zhang
Laszlo Ersek