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| author | Suganath Prabu <suganath-prabu.subramani@broadcom.com> | 2020-04-23 09:23:15 +0200 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2020-04-24 19:08:18 +0200 |
| commit | 8012209eb26b7819385a6ec6eae4b1d0a0dbe585 (patch) | |
| tree | 0af72507a2bf24f485fb8499a376b78d00648748 /drivers/scsi/mpt3sas/mpt3sas_base.h | |
| parent | scsi: mpt3sas: Separate out RDPQ allocation to new function (diff) | |
| download | linux-8012209eb26b7819385a6ec6eae4b1d0a0dbe585.tar.xz linux-8012209eb26b7819385a6ec6eae4b1d0a0dbe585.zip | |
scsi: mpt3sas: Handle RDPQ DMA allocation in same 4G region
For INVADER_SERIES, each set of 8 reply queues (0 - 7, 8 - 15,..), and for
VENTURA_SERIES, each set of 16 reply queues (0 - 15, 16 - 31,..) need to be
within the same 4 GB boundary. Driver uses limitation of VENTURA_SERIES to
manage INVADER_SERIES as well. The driver is allocating the DMA able
memory for RDPQs accordingly.
1) At driver load, set DMA mask to 64 and allocate memory for RDPQs
2) Check if allocated resources for RDPQ are in the same 4GB range
3) If #2 is true, continue with 64 bit DMA and go to #6
4) If #2 is false, then free all the resources from #1
5) Set DMA mask to 32 and allocate RDPQs
6) Proceed with driver loading and other allocations
Link: https://lore.kernel.org/r/1587626596-1044-5-git-send-email-suganath-prabu.subramani@broadcom.com
Reviewed-by: Christoph Hellwig <hch@lst.de>
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.h')
| -rw-r--r-- | drivers/scsi/mpt3sas/mpt3sas_base.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.h b/drivers/scsi/mpt3sas/mpt3sas_base.h index caae04086539..5a83971179f2 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_base.h +++ b/drivers/scsi/mpt3sas/mpt3sas_base.h @@ -367,6 +367,7 @@ struct mpt3sas_nvme_cmd { #define MPT3SAS_HIGH_IOPS_REPLY_QUEUES 8 #define MPT3SAS_HIGH_IOPS_BATCH_COUNT 16 #define MPT3SAS_GEN35_MAX_MSIX_QUEUES 128 +#define RDPQ_MAX_INDEX_IN_ONE_CHUNK 16 /* OEM Specific Flags will come from OEM specific header files */ struct Mpi2ManufacturingPage10_t { @@ -1063,6 +1064,7 @@ typedef void (*MPT3SAS_FLUSH_RUNNING_CMDS)(struct MPT3SAS_ADAPTER *ioc); * @thresh_hold: Max number of reply descriptors processed * before updating Host Index * @drv_support_bitmap: driver's supported feature bit map + * @use_32bit_dma: Flag to use 32 bit consistent dma mask * @scsi_io_cb_idx: shost generated commands * @tm_cb_idx: task management commands * @scsih_cb_idx: scsih internal commands @@ -1252,6 +1254,7 @@ struct MPT3SAS_ADAPTER { u8 high_iops_queues; u32 drv_support_bitmap; bool enable_sdev_max_qd; + bool use_32bit_dma; /* internal commands, callback index */ u8 scsi_io_cb_idx; |