diff options
| author | Suganath Prabu <suganath-prabu.subramani@broadcom.com> | 2019-08-03 09:59:50 -0400 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2019-08-07 22:46:19 -0400 |
| commit | 5bb309dbbbf2157786004201eb70dafd283b54b5 (patch) | |
| tree | a50b84d24175631b5648cc7567eebc00bb98645b /drivers/scsi/mpt3sas/mpt3sas_base.c | |
| parent | 635ee6c73034ea4488a8e26bb0d0291d83146863 (diff) | |
scsi: mpt3sas: Enumerate SES of a managed PCIe switch
SES device of managed PCIe switch will be enumerated same as NVMe drives.
The device info type for this SES device is
MPI26_PCIE_DEVINFO_SCSI (0x4),
whereas the device info type for NVMe drives is
MPI26_PCIE_DEVINFO_NVME (0x3).
Based on this device info type driver determines whether the device is NVMe
drive or a SES device of a managed PCIe switch.
This SES device doesn't have the PCIe device page 2 information like NVMe
drives, so driver won't read PCIe device page 2 information for SES device.
This SES device uses only IEEE SGL's, So driver build's IEEE SGL's whenever
it receives any SCSI commands for this SES device.
Signed-off-by: Suganath Prabu <suganath-prabu.subramani@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/mpt3sas/mpt3sas_base.c')
| -rw-r--r-- | drivers/scsi/mpt3sas/mpt3sas_base.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c index f72933cc6622..44d19cb6b069 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_base.c +++ b/drivers/scsi/mpt3sas/mpt3sas_base.c @@ -2260,6 +2260,11 @@ base_is_prp_possible(struct MPT3SAS_ADAPTER *ioc, bool build_prp = true; data_length = scsi_bufflen(scmd); + if (pcie_device && + (mpt3sas_scsih_is_pcie_scsi_device(pcie_device->device_info))) { + build_prp = false; + return build_prp; + } /* If Datalenth is <= 16K and number of SGE’s entries are <= 2 * we built IEEE SGL |