Following the legacy ring submission example, update the
ring->init_context() hook to support the execlist submission mode.
v2: update to use the new workaround macros and cleanup unused code.
This takes care of both bdw and chv workarounds.
v2.1: Add missing call to init_context() during deferred context creation.
v3: Split init_context (emit) in legacy/lrc modes. For lrc, get the ringbuf
from the context. (Mika/Daniel).
Issue: VIZ-4092
Issue: GMIN-3475
Change-Id: Ie3d093b2542ab0e2a44b90460533e2f979788d6c
Cc: Deepak S <deepak.s@xxxxxxxxx>
Cc: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>
Cc: Daniel Vetter <daniel@xxxxxxxx>
Signed-off-by: Michel Thierry <michel.thierry@xxxxxxxxx>
Signed-off-by: Arun Siluvery <arun.siluvery@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_lrc.c | 47 ++++++++++++++++++++++++++++++++-
drivers/gpu/drm/i915/intel_ringbuffer.c | 2 +-
drivers/gpu/drm/i915/intel_ringbuffer.h | 4 +++
3 files changed, 51 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 78c3dfc..69d672b 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -1072,6 +1072,44 @@ int intel_logical_ring_begin(struct intel_ringbuffer *ringbuf, int num_dwords)
return 0;
}
+static int intel_logical_ring_workarounds_emit(struct intel_engine_cs *ring,
+ struct intel_context *ctx)
+{
+ int ret, i;
+ struct intel_ringbuffer *ringbuf = ctx->engine[ring->id].ringbuf;
+ struct drm_device *dev = ring->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct i915_workarounds *w = &dev_priv->workarounds;
+
+ if (WARN_ON(w->count == 0))
+ return 0;
+
+ ring->gpu_caches_dirty = true;
+ ret = logical_ring_flush_all_caches(ringbuf);
+ if (ret)
+ return ret;
+
+ ret = intel_logical_ring_begin(ringbuf, w->count * 2 + 2);
+ if (ret)
+ return ret;
+
+ intel_logical_ring_emit(ringbuf, MI_LOAD_REGISTER_IMM(w->count));
+ for (i = 0; i < w->count; i++) {
+ intel_logical_ring_emit(ringbuf, w->reg[i].addr);
+ intel_logical_ring_emit(ringbuf, w->reg[i].value);
+ }
+ intel_logical_ring_emit(ringbuf, MI_NOOP);
+
+ intel_logical_ring_advance(ringbuf);
+
+ ring->gpu_caches_dirty = true;
+ ret = logical_ring_flush_all_caches(ringbuf);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
static int gen8_init_common_ring(struct intel_engine_cs *ring)
{
struct drm_device *dev = ring->dev;
@@ -1115,7 +1153,7 @@ static int gen8_init_render_ring(struct intel_engine_cs *ring)
I915_WRITE(INSTPM, _MASKED_BIT_ENABLE(INSTPM_FORCE_ORDERING));
- return ret;
+ return init_workarounds_ring(ring);
}
static int gen8_emit_bb_start(struct intel_ringbuffer *ringbuf,
@@ -1366,6 +1404,7 @@ static int logical_render_ring_init(struct drm_device *dev)
ring->irq_keep_mask |= GT_RENDER_L3_PARITY_ERROR_INTERRUPT;
ring->init = gen8_init_render_ring;
+ ring->init_context_lrc = intel_logical_ring_workarounds_emit;
ring->cleanup = intel_fini_pipe_control;
ring->get_seqno = gen8_get_seqno;
ring->set_seqno = gen8_set_seqno;
@@ -1870,6 +1909,12 @@ int intel_lr_context_deferred_create(struct intel_context *ctx,
}
if (ring->id == RCS && !ctx->rcs_initialized) {
+ if (ring->init_context_lrc) {
+ ret = ring->init_context_lrc(ring, ctx);
+ if (ret)
+ DRM_ERROR("ring init context: %d\n", ret);
+ }
+
ret = intel_lr_context_render_state_init(ring, ctx);
if (ret) {
DRM_ERROR("Init render state failed: %d\n", ret);
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 98f2787..b7f32b9 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -818,7 +818,7 @@ static int chv_init_workarounds(struct intel_engine_cs *ring)
return 0;
}
-static int init_workarounds_ring(struct intel_engine_cs *ring)
+int init_workarounds_ring(struct intel_engine_cs *ring)
{
struct drm_device *dev = ring->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h
index f0e7761..a6c4458 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.h
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.h
@@ -149,6 +149,8 @@ struct intel_engine_cs {
int (*init)(struct intel_engine_cs *ring);
int (*init_context)(struct intel_engine_cs *ring);
+ int (*init_context_lrc)(struct intel_engine_cs *ring,
+ struct intel_context *ctx);
void (*write_tail)(struct intel_engine_cs *ring,
u32 value);
@@ -429,6 +431,8 @@ int intel_init_vebox_ring_buffer(struct drm_device *dev);
u64 intel_ring_get_active_head(struct intel_engine_cs *ring);
void intel_ring_setup_status_page(struct intel_engine_cs *ring);
+int init_workarounds_ring(struct intel_engine_cs *ring);
+
static inline u32 intel_ring_get_tail(struct intel_ringbuffer *ringbuf)
{
return ringbuf->tail;
--
2.1.1
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