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scsi: cxlflash: Setup LISNs for user contexts

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The SISLite specification has been updated for OCXL to support communicating
data to generate AFU interrupts to the AFU. This includes a new capability bit
that is advertised for OCXL AFUs and new registers to hold the object handle
and translation PASID of each interrupt. For Power, the object handle is the
mapped trigger page. Note that because these mappings are kernel only, the
PASID of a kernel context must be used to satisfy the translation.

Signed-off-by: Uma Krishnan <ukrishn@linux.vnet.ibm.com>
Acked-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Uma Krishnan
2018-03-26 11:34:42 -05:00
committed by Martin K. Petersen
parent 402a55ea47
commit 23239eeccb
3 changed files with 24 additions and 0 deletions
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5
drivers/scsi/cxlflash/common.h
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@@ -273,6 +273,11 @@ static inline bool afu_has_cap(struct afu *afu, u64 cap)
return afu_cap & cap;
}
static inline bool afu_is_ocxl_lisn(struct afu *afu)
{
return afu_has_cap(afu, SISL_INTVER_CAP_OCXL_LISN);
}
static inline bool afu_is_afu_debug(struct afu *afu)
{
return afu_has_cap(afu, SISL_INTVER_CAP_AFU_DEBUG);