diff options
| author | Igor Pylypiv <ipylypiv@google.com> | 2024-10-25 18:50:09 +0000 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2024-11-06 20:45:20 -0500 |
| commit | 53b550de463529f88c78526288260d4194cf4061 (patch) | |
| tree | 5b1b6a6cc87d860fdb9de9833cb1b04bff2609ef /drivers/scsi/pm8001 | |
| parent | 4501ea5f0a5ca1a3fe58ef7b48f1bd3829c6c7e5 (diff) | |
scsi: pm8001: Increase request sg length to support 4MiB requests
Increasing the per-request size maximum to 4MiB (8192 sectors x 512
bytes) runs into the per-device DMA scatter gather list limit
(max_segments) for users of the io vector system calls (e.g. readv and
writev).
Increase the max scatter gather list length to 1024 to enable kernel to
send 4MiB (1024 * 4KiB page size) requests.
Signed-off-by: Igor Pylypiv <ipylypiv@google.com>
Link: https://lore.kernel.org/r/20241025185009.3278297-1-ipylypiv@google.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/pm8001')
| -rw-r--r-- | drivers/scsi/pm8001/pm8001_defs.h | 7 | ||||
| -rw-r--r-- | drivers/scsi/pm8001/pm8001_init.c | 1 |
2 files changed, 6 insertions, 2 deletions
diff --git a/drivers/scsi/pm8001/pm8001_defs.h b/drivers/scsi/pm8001/pm8001_defs.h index 501b574239e8..7871e29a820a 100644 --- a/drivers/scsi/pm8001/pm8001_defs.h +++ b/drivers/scsi/pm8001/pm8001_defs.h @@ -92,8 +92,11 @@ enum port_type { #define PM8001_MAX_MSIX_VEC 64 /* max msi-x int for spcv/ve */ #define PM8001_RESERVE_SLOT 8 -#define CONFIG_SCSI_PM8001_MAX_DMA_SG 528 -#define PM8001_MAX_DMA_SG CONFIG_SCSI_PM8001_MAX_DMA_SG +#define PM8001_SECTOR_SIZE 512 +#define PM8001_PAGE_SIZE_4K 4096 +#define PM8001_MAX_IO_SIZE (4 * 1024 * 1024) +#define PM8001_MAX_DMA_SG (PM8001_MAX_IO_SIZE / PM8001_PAGE_SIZE_4K) +#define PM8001_MAX_SECTORS (PM8001_MAX_IO_SIZE / PM8001_SECTOR_SIZE) enum memory_region_num { AAP1 = 0x0, /* application acceleration processor */ diff --git a/drivers/scsi/pm8001/pm8001_init.c b/drivers/scsi/pm8001/pm8001_init.c index dce40d02b73c..f8c81e53e93f 100644 --- a/drivers/scsi/pm8001/pm8001_init.c +++ b/drivers/scsi/pm8001/pm8001_init.c @@ -121,6 +121,7 @@ static const struct scsi_host_template pm8001_sht = { .scan_start = pm8001_scan_start, .can_queue = 1, .sg_tablesize = PM8001_MAX_DMA_SG, + .max_sectors = PM8001_MAX_SECTORS, .shost_groups = pm8001_host_groups, .sdev_groups = pm8001_sdev_groups, .track_queue_depth = 1, |