diff options
| author | Suganath Prabu <[email protected]> | 2019-07-30 03:43:57 -0400 |
|---|---|---|
| committer | Martin K. Petersen <[email protected]> | 2019-07-30 12:46:06 -0400 |
| commit | df9a606184bfdb5ae3ca9d226184e9489f5c24f7 (patch) | |
| tree | 02a6dfc7230096d05565df8e7eea5dae557eae7a /lib/mpi/mpi-internal.h | |
| parent | 18a56d699d174f3ac41f2ea86e1ca21f98b01d8f (diff) | |
scsi: mpt3sas: Use 63-bit DMA addressing on SAS35 HBA
Although SAS3 & SAS3.5 IT HBA controllers support 64-bit DMA addressing, as
per hardware design, if DMA-able range contains all 64-bits
set (0xFFFFFFFF-FFFFFFFF) then it results in a firmware fault.
E.g. SGE's start address is 0xFFFFFFFF-FFFF000 and data length is 0x1000
bytes. when HBA tries to DMA the data at 0xFFFFFFFF-FFFFFFFF location then
HBA will fault the firmware.
Driver will set 63-bit DMA mask to ensure the above address will not be
used.
Cc: <[email protected]> # 5.1.20+
Signed-off-by: Suganath Prabu <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
Diffstat (limited to 'lib/mpi/mpi-internal.h')
0 files changed, 0 insertions, 0 deletions