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| author |   Suganath Prabu Subramani <suganath-prabu.subramani@broadcom.com> | 2018-02-07 02:51:47 -0800 |
|---|---|---|
| committer |   Martin K. Petersen <martin.petersen@oracle.com> | 2018-02-27 22:26:13 -0500 |
| commit | 22ae5a3c2599381cf7aaa5aca25c515a3166adcc (patch) | |
| tree | 63a37b0b03c6b4528cd81df70c3d040586d0916a /drivers/scsi/mpt3sas/mpt3sas_base.h | |
| parent | scsi: mpt3sas: Configure reply post queue depth, DMA and sgl tablesize. (diff) | |
| download | linux-dev-22ae5a3c2599381cf7aaa5aca25c515a3166adcc.tar.xz linux-dev-22ae5a3c2599381cf7aaa5aca25c515a3166adcc.zip | |
scsi: mpt3sas: Introduce API to get BAR0 mapped buffer address
For MPI Endpoint/Mcpu, driver should double buffer data buffer/SGLs.
This is normally copied from host to internal memory of IOC by DMA
engine of PCI device. Since the interface to DMA from host to mCPU is
not present for Mcpu/MPI Endpoint device, driver does double copy of
those buffers directly to the mCPU memory region via BAR0 region.
Introduced API to calculate and return BAR0 mapped host buffer's
physical and virtual address for the provided smid.
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 | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.h b/drivers/scsi/mpt3sas/mpt3sas_base.h index 897394dc8c62..2529d252a8f1 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_base.h +++ b/drivers/scsi/mpt3sas/mpt3sas_base.h @@ -120,6 +120,8 @@ #define MPT3SAS_NVME_QUEUE_DEPTH 128 #define MPT_NAME_LENGTH 32 /* generic length of strings */ #define MPT_STRING_LENGTH 64 +#define MPI_FRAME_START_OFFSET 256 +#define REPLY_FREE_POOL_SIZE 512 /*(32 maxcredix *4)*(4 times)*/ #define MPT_MAX_CALLBACKS 32 |