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| author | Uma Krishnan <ukrishn@linux.vnet.ibm.com> | 2018-03-26 18:34:03 +0200 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2018-04-19 01:32:49 +0200 |
| commit | 56f1db1a2a0c1ba4da0b970f211154b7781c725a (patch) | |
| tree | 382da0f621309b1bbfcab52a65d3acc8da65824a /drivers/scsi/cxlflash/ocxl_hw.h | |
| parent | scsi: cxlflash: Support starting user contexts (diff) | |
| download | linux-56f1db1a2a0c1ba4da0b970f211154b7781c725a.tar.xz linux-56f1db1a2a0c1ba4da0b970f211154b7781c725a.zip | |
scsi: cxlflash: Support adapter context polling
The cxlflash userspace API requires that users be able to poll the adapter
context for any pending events or interrupts from the AFU. Support polling on
various events by implementing the AFU poll fop using a waitqueue.
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/ocxl_hw.h')
| -rw-r--r-- | drivers/scsi/cxlflash/ocxl_hw.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/scsi/cxlflash/ocxl_hw.h b/drivers/scsi/cxlflash/ocxl_hw.h index 2eb53901daf3..acd280135989 100644 --- a/drivers/scsi/cxlflash/ocxl_hw.h +++ b/drivers/scsi/cxlflash/ocxl_hw.h @@ -56,6 +56,8 @@ struct ocxlflash_context { u64 psn_size; /* Process mapping size */ spinlock_t slock; /* Protects irq/fault/event updates */ + wait_queue_head_t wq; /* Wait queue for poll and interrupts */ + struct ocxlflash_irqs *irqs; /* Pointer to array of structures */ int num_irqs; /* Number of interrupts */ bool pending_irq; /* Pending interrupt on the context */ |