Commit d95fda29 authored by Michal Wajdeczko's avatar Michal Wajdeczko
Browse files

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: default avatarMichal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: default avatarMichał Winiarski <michal.winiarski@intel.com>
Link: https://patch.msgid.link/20260303201354.17948-3-michal.wajdeczko@intel.com
parent 6cd7d168

drivers/gpu/drm/xe/instructions/xe_mi_commands.h

+13 −0
Original line number Diff line number Diff line
@@ -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)