Since we do the l3-remap on context switch, and proceed to do a context
switch immediately after manually doing the l3-remap, we can remove the
redundant manual call.
Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
---
drivers/gpu/drm/i915/i915_drv.h | 1 -
drivers/gpu/drm/i915/i915_gem.c | 35 +--------------------------------
drivers/gpu/drm/i915/i915_gem_context.c | 30 +++++++++++++++++++++++++++-
3 files changed, 30 insertions(+), 36 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index f5f457920944..7dc3eed71eb3 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2827,7 +2827,6 @@ bool i915_gem_clflush_object(struct drm_i915_gem_object
*obj, bool force);
int __must_check i915_gem_init(struct drm_device *dev);
int i915_gem_init_rings(struct drm_device *dev);
int __must_check i915_gem_init_hw(struct drm_device *dev);
-int i915_gem_l3_remap(struct drm_i915_gem_request *req, int slice);
void i915_gem_init_swizzling(struct drm_device *dev);
void i915_gem_cleanup_ringbuffer(struct drm_device *dev);
int __must_check i915_gpu_idle(struct drm_device *dev);
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 989222eb107b..379913221ab1 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -3951,34 +3951,6 @@ err:
return ret;
}
-int i915_gem_l3_remap(struct drm_i915_gem_request *req, int slice)
-{
- struct drm_i915_private *dev_priv = req->i915;
- u32 *remap_info = dev_priv->l3_parity.remap_info[slice];
- int i, ret;
-
- if (!HAS_L3_DPF(dev_priv) || !remap_info)
- return 0;
-
- ret = intel_ring_begin(req, GEN7_L3LOG_SIZE / 4 * 3);
- if (ret)
- return ret;
-
- /*
- * Note: We do not worry about the concurrent register cacheline hang
- * here because no other code should access these registers other than
- * at initialization time.
- */
- for (i = 0; i < GEN7_L3LOG_SIZE / 4; i++) {
- intel_ring_emit(req->ring, MI_LOAD_REGISTER_IMM(1));
- intel_ring_emit_reg(req->ring, GEN7_L3LOG(slice, i));
- intel_ring_emit(req->ring, remap_info[i]);
- }
- intel_ring_advance(req->ring);
-
- return ret;
-}
-
void i915_gem_init_swizzling(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
@@ -4083,7 +4055,7 @@ i915_gem_init_hw(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_engine_cs *ring;
- int ret, i, j;
+ int ret, i;
if (INTEL_INFO(dev)->gen < 6 && !intel_enable_gtt())
return -EIO;
@@ -4158,11 +4130,6 @@ i915_gem_init_hw(struct drm_device *dev)
goto out;
}
- if (ring->id == RCS) {
- for (j = 0; j < NUM_L3_SLICES(dev); j++)
- i915_gem_l3_remap(req, j);
- }
-
ret = i915_ppgtt_init_ring(req);
if (ret && ret != -EIO) {
DRM_ERROR("PPGTT enable ring #%d failed %d\n", i, ret);
diff --git a/drivers/gpu/drm/i915/i915_gem_context.c
b/drivers/gpu/drm/i915/i915_gem_context.c
index e0ecfdfb0c8c..15e2e2abd72d 100644
--- a/drivers/gpu/drm/i915/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/i915_gem_context.c
@@ -665,6 +665,34 @@ needs_pd_load_post(struct intel_engine_cs *ring, struct
intel_context *to,
return false;
}
+static int remap_l3(struct drm_i915_gem_request *req, int slice)
+{
+ struct drm_i915_private *dev_priv = req->i915;
+ u32 *remap_info = dev_priv->l3_parity.remap_info[slice];
+ int i, ret;
+
+ if (!HAS_L3_DPF(dev_priv) || !remap_info)
+ return 0;
+
+ ret = intel_ring_begin(req, GEN7_L3LOG_SIZE / 4 * 3);
+ if (ret)
+ return ret;
+
+ /*
+ * Note: We do not worry about the concurrent register cacheline hang
+ * here because no other code should access these registers other than
+ * at initialization time.
+ */
+ for (i = 0; i < GEN7_L3LOG_SIZE / 4; i++) {
+ intel_ring_emit(req->ring, MI_LOAD_REGISTER_IMM(1));
+ intel_ring_emit_reg(req->ring, GEN7_L3LOG(slice, i));
+ intel_ring_emit(req->ring, remap_info[i]);
+ }
+ intel_ring_advance(req->ring);
+
+ return 0;
+}
+
static int do_switch(struct drm_i915_gem_request *req)
{
struct intel_context *to = req->ctx;
@@ -764,7 +792,7 @@ static int do_switch(struct drm_i915_gem_request *req)
if (!(to->remap_slice & (1<<i)))
continue;
- ret = i915_gem_l3_remap(req, i);
+ ret = remap_l3(req, i);
/* If it failed, try again next round */
if (ret)
DRM_DEBUG_DRIVER("L3 remapping failed\n");
--
2.7.0.rc3
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