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dmaengine: idxd: Add descriptor definitions for 16 bytes of pattern in memory fill operation 

The memory fill operation (0x04) can fill in memory with either 8 bytes
or 16 bytes of pattern. To fill in memory with 16 bytes of pattern, the
first 8 bytes are provided in pattern lower in bytes 16-23 and the next
8 bytes are in pattern upper in bytes 40-47 in the descriptor. Currently
only 8 bytes of pattern is enabled.

Add descriptor definitions for pattern lower and pattern upper so that
user can use 16 bytes of pattern to fill memory.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/20230303213413.3357431-2-fenghua.yu@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Fenghua Yu 2023-03-03 13:34:11 -08:00 committed by Vinod Koul
parent 376c2c9b04
commit 9e410fe3dc
1 changed files with 4 additions and 0 deletions
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4
include/uapi/linux/idxd.h
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@ -180,6 +180,7 @@ struct dsa_hw_desc {
uint64_t rdback_addr;
uint64_t pattern;
uint64_t desc_list_addr;
uint64_t pattern_lower;
};
union {
uint64_t dst_addr;
@ -244,6 +245,9 @@ struct dsa_hw_desc {
uint16_t dest_app_tag_seed;
};
/* Fill */
uint64_t pattern_upper;
uint8_t op_specific[24];
};
} __attribute__((packed));