diff options
| author | Suganath Prabu S <suganath-prabu.subramani@broadcom.com> | 2021-03-05 15:58:58 +0530 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2021-03-17 00:04:41 -0400 |
| commit | d6adc251dd2fede6aaaf6c39f7e4ad799eda3758 (patch) | |
| tree | 8dcf3c8d1c3f655bfaa62284903d21569da22e97 /drivers/scsi/mpt3sas/mpt3sas_base.h | |
| parent | a1c4d7741323eff1d9c5baca8337ac3ac4630649 (diff) | |
scsi: mpt3sas: Force PCIe scatterlist allocations to be within same 4 GB region
According to the MPI specification, PCIe SGL buffers can not cross a 4 GB
boundary.
While allocating, if any buffer crosses the 4 GB boundary, then:
- Release the already allocated memory pools; and
- Reallocate them by changing the DMA coherent mask to 32-bit
Link: https://lore.kernel.org/r/20210305102904.7560-2-suganath-prabu.subramani@broadcom.com
Signed-off-by: Suganath Prabu S <suganath-prabu.subramani@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/mpt3sas/mpt3sas_base.h')
| -rw-r--r-- | drivers/scsi/mpt3sas/mpt3sas_base.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.h b/drivers/scsi/mpt3sas/mpt3sas_base.h index 315aee6ef86f..b86eced75446 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_base.h +++ b/drivers/scsi/mpt3sas/mpt3sas_base.h @@ -1371,6 +1371,7 @@ struct MPT3SAS_ADAPTER { u16 thresh_hold; u8 high_iops_queues; u32 drv_support_bitmap; + u32 dma_mask; bool enable_sdev_max_qd; bool use_32bit_dma; |