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| author | Dave Jiang <dave.jiang@intel.com> | 2020-01-22 00:44:17 +0100 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2020-01-24 06:48:45 +0100 |
| commit | d1dfe5b8ac644a0ffccfe7af22abed7c80b34702 (patch) | |
| tree | d617491597045d9cda8dad3ed4c20a2b1f53cb02 /drivers/dma/idxd/idxd.h | |
| parent | dmaengine: idxd: add sysfs ABI for idxd driver (diff) | |
| download | linux-d1dfe5b8ac644a0ffccfe7af22abed7c80b34702.tar.xz linux-d1dfe5b8ac644a0ffccfe7af22abed7c80b34702.zip | |
dmaengine: idxd: add descriptor manipulation routines
This commit adds helper functions for DSA descriptor allocation,
submission, and free operations.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/157965025757.73301.12692876585357550065.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/idxd/idxd.h')
| -rw-r--r-- | drivers/dma/idxd/idxd.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/dma/idxd/idxd.h b/drivers/dma/idxd/idxd.h index 909926aefd3e..d369b75468e3 100644 --- a/drivers/dma/idxd/idxd.h +++ b/drivers/dma/idxd/idxd.h @@ -68,6 +68,11 @@ enum idxd_wq_type { #define WQ_NAME_SIZE 1024 #define WQ_TYPE_SIZE 10 +enum idxd_op_type { + IDXD_OP_BLOCK = 0, + IDXD_OP_NONBLOCK = 1, +}; + struct idxd_wq { void __iomem *dportal; struct device conf_dev; @@ -246,4 +251,9 @@ int idxd_wq_disable(struct idxd_wq *wq); int idxd_wq_map_portal(struct idxd_wq *wq); void idxd_wq_unmap_portal(struct idxd_wq *wq); +/* submission */ +int idxd_submit_desc(struct idxd_wq *wq, struct idxd_desc *desc); +struct idxd_desc *idxd_alloc_desc(struct idxd_wq *wq, enum idxd_op_type optype); +void idxd_free_desc(struct idxd_wq *wq, struct idxd_desc *desc); + #endif |