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dmaengine: idxd: Merge definition of dsa_batch_desc into dsa_hw_desc 

We don't need a special structure just for batch descriptors. The
layout matches the general form for other descriptors.

Merge the desc_list_addr field into the union of other aliases for
the the third quadword in the structure.

Create a union to alias "xfer_size" with "desc_count".

Signed-off-by: Tony Luck <tony.luck@intel.com>
Acked-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/158387868208.35922.5895104426944263789.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Tony Luck 2020-03-10 15:18:02 -07:00 committed by Vinod Koul
parent 26cf132de6
commit 7c4a4d0882
1 changed files with 5 additions and 16 deletions
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21
include/uapi/linux/idxd.h
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@ -83,21 +83,6 @@ enum dsa_completion_status {
#define DSA_COMP_STATUS_MASK 0x7f
#define DSA_COMP_STATUS_WRITE 0x80
struct dsa_batch_desc {
uint32_t pasid:20;
uint32_t rsvd:11;
uint32_t priv:1;
uint32_t flags:24;
uint32_t opcode:8;
uint64_t completion_addr;
uint64_t desc_list_addr;
uint64_t rsvd1;
uint32_t desc_count;
uint16_t interrupt_handle;
uint16_t rsvd2;
uint8_t rsvd3[24];
} __attribute__((packed));
struct dsa_hw_desc {
uint32_t pasid:20;
uint32_t rsvd:11;
@ -109,6 +94,7 @@ struct dsa_hw_desc {
uint64_t src_addr;
uint64_t rdback_addr;
uint64_t pattern;
uint64_t desc_list_addr;
};
union {
uint64_t dst_addr;
@ -116,7 +102,10 @@ struct dsa_hw_desc {
uint64_t src2_addr;
uint64_t comp_pattern;
};
uint32_t xfer_size;
union {
uint32_t xfer_size;
uint32_t desc_count;
};
uint16_t int_handle;
uint16_t rsvd1;
union {