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drm/xe: Refactor emit_clear_link_copy

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Implement a function to return the length of the MEM_SET instruction.
This is to prepare for future platforms where the length of MEM_SET
instruction is expected to change.

Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patch.msgid.link/20260511123746.616662-7-balasubramani.vivekanandan@intel.com
Signed-off-by: Balasubramani Vivekanandan <balasubramani.vivekanandan@intel.com>
This commit is contained in:
Balasubramani Vivekanandan 2026-05-11 18:07:49 +05:30
parent 388768fe17
commit 65be72013b
2 changed files with 7 additions and 3 deletions
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1
drivers/gpu/drm/xe/instructions/xe_gpu_commands.h
View File

@ -37,7 +37,6 @@
#define MEM_COPY_DST_MOCS_INDEX_MASK GENMASK(6, 3)
#define PVC_MEM_SET_CMD (2 << 29 | 0x5b << 22)
#define PVC_MEM_SET_CMD_LEN_DW 7
#define PVC_MEM_SET_MATRIX REG_BIT(17)
#define PVC_MEM_SET_DATA_FIELD GENMASK(31, 24)
/* Bspec lists field as [6:0], but index alone is from [6:1] */

9
drivers/gpu/drm/xe/xe_migrate.c
View File

@ -1461,12 +1461,17 @@ struct dma_fence *xe_migrate_vram_copy_chunk(struct xe_bo *vram_bo, u64 vram_off
return fence;
}
static u32 blt_mem_set_cmd_len(struct xe_device *xe)
{
return 7;
}
static void emit_clear_link_copy(struct xe_gt *gt, struct xe_bb *bb, u64 src_ofs,
u32 size, u32 pitch)
{
struct xe_device *xe = gt_to_xe(gt);
u32 *cs = bb->cs + bb->len;
u32 len = PVC_MEM_SET_CMD_LEN_DW;
u32 len = blt_mem_set_cmd_len(xe);
*cs++ = PVC_MEM_SET_CMD | PVC_MEM_SET_MATRIX | (len - 2);
*cs++ = pitch - 1;
@ -1536,7 +1541,7 @@ static u32 emit_clear_cmd_len(struct xe_gt *gt)
struct xe_device *xe = gt_to_xe(gt);
if (gt->info.has_xe2_blt_instructions)
return PVC_MEM_SET_CMD_LEN_DW;
return blt_mem_set_cmd_len(xe);
else
return blt_fast_color_cmd_len(xe);
}