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dmaengine: idxd: Add descriptor definitions for DIX generate operation

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The Data Integrity Extension (DIX) generate operation (0x17) computes
the Data Integrity Field (DIF) on the source data and writes only the
computed DIF for each source block to the PI destination address.

Add descriptor definitions for this operation so that user can use
DSA to accelerate DIX generate operation.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/20230303213413.3357431-3-fenghua.yu@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Fenghua Yu 2023-03-03 13:34:12 -08:00 committed by Vinod Koul
parent 9e410fe3dc
commit 12bbc2c260
1 changed files with 20 additions and 0 deletions
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20
include/uapi/linux/idxd.h
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@ -78,6 +78,7 @@ enum dsa_opcode {
DSA_OPCODE_DIF_INS,
DSA_OPCODE_DIF_STRP,
DSA_OPCODE_DIF_UPDT,
DSA_OPCODE_DIX_GEN = 0x17,
DSA_OPCODE_CFLUSH = 0x20,
};
@ -248,6 +249,17 @@ struct dsa_hw_desc {
/* Fill */
uint64_t pattern_upper;
/* DIX generate */
struct {
uint8_t dix_gen_res;
uint8_t dest_dif_flags;
uint8_t dif_flags;
uint8_t dix_gen_res2[13];
uint32_t ref_tag_seed;
uint16_t app_tag_mask;
uint16_t app_tag_seed;
};
uint8_t op_specific[24];
};
} __attribute__((packed));
@ -326,6 +338,14 @@ struct dsa_completion_record {
uint16_t dif_upd_dest_app_tag;
};
/* DIX generate */
struct {
uint64_t dix_gen_res;
uint32_t dix_ref_tag;
uint16_t dix_app_tag_mask;
uint16_t dix_app_tag;
};
uint8_t op_specific[16];
};
} __attribute__((packed));