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drm/xe: Add MI_SEMAPHORE_WAIT command definition

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This command supports memory based Semaphore WAIT. Memory based
semaphores will be used for synchronization between the Producer
and the Consumer contexts. Producer and Consumer Contexts could
be running on different engines or on the same engine inside GT.

Bspec: 45749, 60244
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Michał Winiarski <michal.winiarski@intel.com>
Link: https://patch.msgid.link/20260303201354.17948-3-michal.wajdeczko@intel.com
This commit is contained in:
Michal Wajdeczko
2026-03-03 21:13:53 +01:00
parent 6cd7d168c4
commit d95fda2975
1 changed files with 13 additions and 0 deletions
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13
drivers/gpu/drm/xe/instructions/xe_mi_commands.h
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@@ -34,6 +34,19 @@
#define MI_FORCE_WAKEUP __MI_INSTR(0x1D)
#define MI_MATH(n) (__MI_INSTR(0x1A) | XE_INSTR_NUM_DW((n) + 1))
#define MI_SEMAPHORE_WAIT (__MI_INSTR(0x1c) | XE_INSTR_NUM_DW(5))
#define MI_SEMW_GGTT REG_BIT(22)
#define MI_SEMW_POLL REG_BIT(15)
#define MI_SEMW_COMPARE_OP_MASK REG_GENMASK(14, 12)
#define COMPARE_OP_SAD_GT_SDD 0
#define COMPARE_OP_SAD_GTE_SDD 1
#define COMPARE_OP_SAD_LT_SDD 2
#define COMPARE_OP_SAD_LTE_SDD 3
#define COMPARE_OP_SAD_EQ_SDD 4
#define COMPARE_OP_SAD_NEQ_SDD 5
#define MI_SEMW_COMPARE(OP) REG_FIELD_PREP(MI_SEMW_COMPARE_OP_MASK, COMPARE_OP_##OP)
#define MI_SEMW_TOKEN(token) REG_FIELD_PREP(REG_GENMASK(9, 2), (token))
#define MI_STORE_DATA_IMM __MI_INSTR(0x20)
#define MI_SDI_GGTT REG_BIT(22)
#define MI_SDI_LEN_DW GENMASK(9, 0)