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| author | Ben Widawsky <ben@bwidawsk.net> | 2014-06-30 20:53:38 +0400 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2014-07-08 00:22:58 +0400 |
| commit | 5ee426ca135c91e071d23853e876b957526841c5 (patch) | |
| tree | 714697e0242275660ec8423a197d2249ffe61112 /drivers/gpu/drm/i915/i915_reg.h | |
| parent | 3e78998a588c64d6447849deabf630e837505a24 (diff) | |
| download | linux-5ee426ca135c91e071d23853e876b957526841c5.tar.xz | |
drm/i915/bdw: implement semaphore wait
Semaphore waits use a new instruction, MI_SEMAPHORE_WAIT. The seqno to
wait on is all well defined by the table in the previous patch. There is
nothing else different from previous GEN's semaphore synchronization
code.
v2: Update macros to not require the other ring's ring->id (Chris)
v3: Add missing VCS2 gen8_ring_wait init besides
s/ring_buffer/engine_cs (Rodrigo)
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_reg.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 218ca7b7bb7c..8c0f70de9fd7 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -268,6 +268,9 @@ #define MI_RESTORE_INHIBIT (1<<0) #define MI_SEMAPHORE_SIGNAL MI_INSTR(0x1b, 0) /* GEN8+ */ #define MI_SEMAPHORE_TARGET(engine) ((engine)<<15) +#define MI_SEMAPHORE_WAIT MI_INSTR(0x1c, 2) /* GEN8+ */ +#define MI_SEMAPHORE_POLL (1<<15) +#define MI_SEMAPHORE_SAD_GTE_SDD (1<<12) #define MI_STORE_DWORD_IMM MI_INSTR(0x20, 1) #define MI_MEM_VIRTUAL (1 << 22) /* 965+ only */ #define MI_STORE_DWORD_INDEX MI_INSTR(0x21, 1) |