[Intel-gfx] [PATCH 2/2] drm/i915: Consolidate gen8_emit_pipe_control
Tvrtko Ursulin
tursulin at ursulin.net
Wed Feb 15 16:06:34 UTC 2017
From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
We have a few open coded instances in the execlists code and an
almost suitable helper in intel_ringbuf.c
We can consolidate to a single helper if we change the existing
helper to emit directly to ring buffer memory and move the space
reservation outside it.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
---
drivers/gpu/drm/i915/intel_lrc.c | 77 +++++++++++----------------------
drivers/gpu/drm/i915/intel_ringbuffer.c | 45 +++++++------------
drivers/gpu/drm/i915/intel_ringbuffer.h | 12 +++++
3 files changed, 53 insertions(+), 81 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index f6537d14d247..ec79f275c61a 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -918,12 +918,10 @@ gen8_emit_flush_coherentl3_wa(struct intel_engine_cs *engine, u32 *batch)
*batch++ = i915_mmio_reg_offset(GEN8_L3SQCREG4);
*batch++ = 0x40400000 | GEN8_LQSC_FLUSH_COHERENT_LINES;
- *batch++ = GFX_OP_PIPE_CONTROL(6);
- *batch++ = PIPE_CONTROL_CS_STALL | PIPE_CONTROL_DC_FLUSH_ENABLE;
- *batch++ = 0;
- *batch++ = 0;
- *batch++ = 0;
- *batch++ = 0;
+ batch = gen8_emit_pipe_control(batch,
+ PIPE_CONTROL_CS_STALL |
+ PIPE_CONTROL_DC_FLUSH_ENABLE,
+ 0);
*batch++ = MI_LOAD_REGISTER_MEM_GEN8 | MI_SRM_LRM_GLOBAL_GTT;
*batch++ = i915_mmio_reg_offset(GEN8_L3SQCREG4);
@@ -957,15 +955,15 @@ static u32 *gen8_init_indirectctx_bb(struct intel_engine_cs *engine, u32 *batch)
if (IS_BROADWELL(engine->i915))
batch = gen8_emit_flush_coherentl3_wa(engine, batch);
- *batch++ = GFX_OP_PIPE_CONTROL(6);
- *batch++ = PIPE_CONTROL_FLUSH_L3 | PIPE_CONTROL_GLOBAL_GTT_IVB |
- PIPE_CONTROL_CS_STALL | PIPE_CONTROL_QW_WRITE;
/* WaClearSlmSpaceAtContextSwitch:bdw,chv */
/* Actual scratch location is at 128 bytes offset */
- *batch++ = i915_ggtt_offset(engine->scratch) + 2 * CACHELINE_BYTES;
- *batch++ = 0;
- *batch++ = 0;
- *batch++ = 0;
+ batch = gen8_emit_pipe_control(batch,
+ PIPE_CONTROL_FLUSH_L3 |
+ PIPE_CONTROL_GLOBAL_GTT_IVB |
+ PIPE_CONTROL_CS_STALL |
+ PIPE_CONTROL_QW_WRITE,
+ i915_ggtt_offset(engine->scratch) +
+ 2 * CACHELINE_BYTES);
/* Pad to end of cacheline */
while ((unsigned long)batch % CACHELINE_BYTES)
@@ -1013,14 +1011,13 @@ static u32 *gen9_init_indirectctx_bb(struct intel_engine_cs *engine, u32 *batch)
/* WaClearSlmSpaceAtContextSwitch:kbl */
/* Actual scratch location is at 128 bytes offset */
if (IS_KBL_REVID(engine->i915, 0, KBL_REVID_A0)) {
- *batch++ = GFX_OP_PIPE_CONTROL(6);
- *batch++ = PIPE_CONTROL_FLUSH_L3 | PIPE_CONTROL_GLOBAL_GTT_IVB |
- PIPE_CONTROL_CS_STALL | PIPE_CONTROL_QW_WRITE;
- *batch++ = i915_ggtt_offset(engine->scratch) +
- 2 * CACHELINE_BYTES;
- *batch++ = 0;
- *batch++ = 0;
- *batch++ = 0;
+ batch = gen8_emit_pipe_control(batch,
+ PIPE_CONTROL_FLUSH_L3 |
+ PIPE_CONTROL_GLOBAL_GTT_IVB |
+ PIPE_CONTROL_CS_STALL |
+ PIPE_CONTROL_QW_WRITE,
+ i915_ggtt_offset(engine->scratch)
+ + 2 * CACHELINE_BYTES);
}
/* WaMediaPoolStateCmdInWABB:bxt,glk */
@@ -1450,39 +1447,17 @@ static int gen8_emit_flush_render(struct drm_i915_gem_request *request,
if (IS_ERR(cs))
return PTR_ERR(cs);
- if (vf_flush_wa) {
- *cs++ = GFX_OP_PIPE_CONTROL(6);
- *cs++ = 0;
- *cs++ = 0;
- *cs++ = 0;
- *cs++ = 0;
- *cs++ = 0;
- }
+ if (vf_flush_wa)
+ cs = gen8_emit_pipe_control(cs, 0, 0);
- if (dc_flush_wa) {
- *cs++ = GFX_OP_PIPE_CONTROL(6);
- *cs++ = PIPE_CONTROL_DC_FLUSH_ENABLE;
- *cs++ = 0;
- *cs++ = 0;
- *cs++ = 0;
- *cs++ = 0;
- }
+ if (dc_flush_wa)
+ cs = gen8_emit_pipe_control(cs, PIPE_CONTROL_DC_FLUSH_ENABLE,
+ 0);
- *cs++ = GFX_OP_PIPE_CONTROL(6);
- *cs++ = flags;
- *cs++ = scratch_addr;
- *cs++ = 0;
- *cs++ = 0;
- *cs++ = 0;
+ cs = gen8_emit_pipe_control(cs, flags, scratch_addr);
- if (dc_flush_wa) {
- *cs++ = GFX_OP_PIPE_CONTROL(6);
- *cs++ = PIPE_CONTROL_CS_STALL;
- *cs++ = 0;
- *cs++ = 0;
- *cs++ = 0;
- *cs++ = 0;
- }
+ if (dc_flush_wa)
+ cs = gen8_emit_pipe_control(cs, PIPE_CONTROL_CS_STALL, 0);
intel_ring_advance(request, cs);
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index f7499829ecc2..a359527948b9 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -334,35 +334,16 @@ gen7_render_ring_flush(struct drm_i915_gem_request *req, u32 mode)
}
static int
-gen8_emit_pipe_control(struct drm_i915_gem_request *req,
- u32 flags, u32 scratch_addr)
+gen8_render_ring_flush(struct drm_i915_gem_request *req, u32 mode)
{
+ u32 flags;
u32 *cs;
- cs = intel_ring_begin(req, 6);
+ cs = intel_ring_begin(req, mode & EMIT_INVALIDATE ? 12 : 6);
if (IS_ERR(cs))
return PTR_ERR(cs);
- *cs++ = GFX_OP_PIPE_CONTROL(6);
- *cs++ = flags;
- *cs++ = scratch_addr;
- *cs++ = 0;
- *cs++ = 0;
- *cs++ = 0;
- intel_ring_advance(req, cs);
-
- return 0;
-}
-
-static int
-gen8_render_ring_flush(struct drm_i915_gem_request *req, u32 mode)
-{
- u32 scratch_addr =
- i915_ggtt_offset(req->engine->scratch) + 2 * CACHELINE_BYTES;
- u32 flags = 0;
- int ret;
-
- flags |= PIPE_CONTROL_CS_STALL;
+ flags = PIPE_CONTROL_CS_STALL;
if (mode & EMIT_FLUSH) {
flags |= PIPE_CONTROL_RENDER_TARGET_CACHE_FLUSH;
@@ -381,15 +362,19 @@ gen8_render_ring_flush(struct drm_i915_gem_request *req, u32 mode)
flags |= PIPE_CONTROL_GLOBAL_GTT_IVB;
/* WaCsStallBeforeStateCacheInvalidate:bdw,chv */
- ret = gen8_emit_pipe_control(req,
- PIPE_CONTROL_CS_STALL |
- PIPE_CONTROL_STALL_AT_SCOREBOARD,
- 0);
- if (ret)
- return ret;
+ cs = gen8_emit_pipe_control(cs,
+ PIPE_CONTROL_CS_STALL |
+ PIPE_CONTROL_STALL_AT_SCOREBOARD,
+ 0);
}
- return gen8_emit_pipe_control(req, flags, scratch_addr);
+ cs = gen8_emit_pipe_control(cs, flags,
+ i915_ggtt_offset(req->engine->scratch) +
+ 2 * CACHELINE_BYTES);
+
+ intel_ring_advance(req, cs);
+
+ return 0;
}
static void ring_setup_phys_status_page(struct intel_engine_cs *engine)
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h
index 16714096810d..de8b27548dcb 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.h
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.h
@@ -632,4 +632,16 @@ void intel_engine_reset_breadcrumbs(struct intel_engine_cs *engine);
void intel_engine_fini_breadcrumbs(struct intel_engine_cs *engine);
unsigned int intel_breadcrumbs_busy(struct drm_i915_private *i915);
+static inline u32 *gen8_emit_pipe_control(u32 *batch, u32 flags, u32 offset)
+{
+ static const u32 pc6[6] = { GFX_OP_PIPE_CONTROL(6), 0, 0, 0, 0, 0 };
+
+ memcpy(batch, pc6, sizeof(pc6));
+
+ batch[1] = flags;
+ batch[2] = offset;
+
+ return batch + 6;
+}
+
#endif /* _INTEL_RINGBUFFER_H_ */
--
2.9.3
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