diff options
| author |   Suganath Prabu <suganath-prabu.subramani@broadcom.com> | 2019-07-30 03:43:57 -0400 |
|---|---|---|
| committer |   Martin K. Petersen <martin.petersen@oracle.com> | 2019-07-30 12:46:06 -0400 |
| commit | df9a606184bfdb5ae3ca9d226184e9489f5c24f7 (patch) | |
| tree | 02a6dfc7230096d05565df8e7eea5dae557eae7a /drivers/scsi/lpfc/lpfc_init.c | |
| parent | scsi: hpsa: remove printing internal cdb on tag collision (diff) | |
| download | linux-dev-df9a606184bfdb5ae3ca9d226184e9489f5c24f7.tar.xz linux-dev-df9a606184bfdb5ae3ca9d226184e9489f5c24f7.zip | |
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: <stable@vger.kernel.org> # 5.1.20+
Signed-off-by: Suganath Prabu <suganath-prabu.subramani@broadcom.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions