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| author |   Uma Krishnan <ukrishn@linux.vnet.ibm.com> | 2018-03-26 11:34:35 -0500 |
|---|---|---|
| committer |   Martin K. Petersen <martin.petersen@oracle.com> | 2018-04-18 19:32:50 -0400 |
| commit | 402a55ea473a37b06eeae9abda00886bfd3bfe6d (patch) | |
| tree | cec70dfe37a352d5dd279e90e69813ab14a26e41 /drivers/scsi/cxlflash/cxl_hw.c | |
| parent | scsi: cxlflash: Support file descriptor mapping (diff) | |
| download | linux-dev-402a55ea473a37b06eeae9abda00886bfd3bfe6d.tar.xz linux-dev-402a55ea473a37b06eeae9abda00886bfd3bfe6d.zip | |
scsi: cxlflash: Introduce object handle fop
OCXL requires that AFUs use an opaque object handle to represent an AFU
interrupt. The specification does not provide a common means to communicate
the object handle to the AFU - each AFU must define this within the AFU
specification. To support this model, the object handle must be passed back to
the core driver as it manages the AFU specification (SISLite) for cxlflash.
Note that for Power systems, the object handle is the effective address of the
trigger page.
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>
Diffstat (limited to 'drivers/scsi/cxlflash/cxl_hw.c')
| -rw-r--r-- | drivers/scsi/cxlflash/cxl_hw.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/scsi/cxlflash/cxl_hw.c b/drivers/scsi/cxlflash/cxl_hw.c index a1d6d12090d3..b42da88386bd 100644 --- a/drivers/scsi/cxlflash/cxl_hw.c +++ b/drivers/scsi/cxlflash/cxl_hw.c @@ -49,6 +49,12 @@ static void cxlflash_unmap_afu_irq(void *ctx_cookie, int num, void *cookie) cxl_unmap_afu_irq(ctx_cookie, num, cookie); } +static u64 cxlflash_get_irq_objhndl(void *ctx_cookie, int irq) +{ + /* Dummy fop for cxl */ + return 0; +} + static int cxlflash_start_context(void *ctx_cookie) { return cxl_start_context(ctx_cookie, 0, NULL); @@ -153,6 +159,7 @@ const struct cxlflash_backend_ops cxlflash_cxl_ops = { .process_element = cxlflash_process_element, .map_afu_irq = cxlflash_map_afu_irq, .unmap_afu_irq = cxlflash_unmap_afu_irq, + .get_irq_objhndl = cxlflash_get_irq_objhndl, .start_context = cxlflash_start_context, .stop_context = cxlflash_stop_context, .afu_reset = cxlflash_afu_reset, |