From: Michal Wajdeczko Date: Tue, 3 Mar 2026 20:13:53 +0000 (+0100) Subject: drm/xe: Add MI_SEMAPHORE_WAIT command definition X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d95fda29758b59f4279465892905ca57dfd4bb10;p=thirdparty%2Fkernel%2Flinux.git drm/xe: Add MI_SEMAPHORE_WAIT command definition 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 Reviewed-by: Michał Winiarski Link: https://patch.msgid.link/20260303201354.17948-3-michal.wajdeczko@intel.com --- diff --git a/drivers/gpu/drm/xe/instructions/xe_mi_commands.h b/drivers/gpu/drm/xe/instructions/xe_mi_commands.h index c47b290e0e9f6..29569eff1af3b 100644 --- a/drivers/gpu/drm/xe/instructions/xe_mi_commands.h +++ b/drivers/gpu/drm/xe/instructions/xe_mi_commands.h @@ -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)