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drm/xe: Allow specifying number of extra dwords at the end of wa bb emission

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Indirect context setup will need more than one.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://lore.kernel.org/r/20250711160153.49833-6-tvrtko.ursulin@igalia.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
This commit is contained in:
Tvrtko Ursulin 2025-07-11 17:01:50 +01:00 committed by Lucas De Marchi
parent 5ce511ad2b
commit a3397b24ae
1 changed files with 5 additions and 3 deletions
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8
drivers/gpu/drm/xe/xe_lrc.c
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@ -984,6 +984,7 @@ struct bo_setup_state {
struct xe_lrc *lrc;
struct xe_hw_engine *hwe;
size_t max_size;
size_t reserve_dw;
unsigned int offset;
const struct bo_setup *funcs;
unsigned int num_funcs;
@ -1017,10 +1018,10 @@ static int setup_bo(struct bo_setup_state *state)
remain -= len;
/*
* There should always be at least 1 additional dword for
* the end marker
* Caller has asked for at least reserve_dw to remain unused.
*/
if (len < 0 || xe_gt_WARN_ON(state->lrc->gt, remain < 1))
if (len < 0 ||
xe_gt_WARN_ON(state->lrc->gt, remain < state->reserve_dw))
goto fail;
state->ptr += len;
@ -1054,6 +1055,7 @@ static int setup_wa_bb(struct xe_lrc *lrc, struct xe_hw_engine *hwe)
.lrc = lrc,
.hwe = hwe,
.max_size = LRC_WA_BB_SIZE,
.reserve_dw = 1,
.offset = __xe_lrc_wa_bb_offset(lrc),
.funcs = funcs,
.num_funcs = ARRAY_SIZE(funcs),