From: Oscar Mateo <oscar.ma...@intel.com>
As a first step, split switch_mm into two different functions:
sync_switch_mm (currently used by ppgtt_enable) and switch_mm
(used by the outside world).
Signed-off-by: Oscar Mateo <oscar.ma...@intel.com>
---
drivers/gpu/drm/i915/i915_gem_context.c | 2 +-
drivers/gpu/drm/i915/i915_gem_gtt.c | 101 ++++++++++++++++++++++----------
drivers/gpu/drm/i915/i915_gem_gtt.h | 5 +-
3 files changed, 73 insertions(+), 35 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_gem_context.c
b/drivers/gpu/drm/i915/i915_gem_context.c
index 3ffe308..14cd7fc 100644
--- a/drivers/gpu/drm/i915/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/i915_gem_context.c
@@ -624,7 +624,7 @@ static int do_switch(struct intel_engine_cs *ring,
from = ring->last_context;
if (USES_FULL_PPGTT(ring->dev)) {
- ret = ppgtt->switch_mm(ppgtt, ring, false);
+ ret = ppgtt->switch_mm(ppgtt, ring);
if (ret)
goto unpin_out;
}
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c
b/drivers/gpu/drm/i915/i915_gem_gtt.c
index ee7af4e..ad5c85b 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -242,9 +242,26 @@ static int gen8_write_pdp(struct intel_engine_cs *ring,
unsigned entry,
return 0;
}
+static int gen8_mm_sync_switch(struct i915_hw_ppgtt *ppgtt,
+ struct intel_engine_cs *ring)
+{
+ int i, ret;
+
+ /* bit of a hack to find the actual last used pd */
+ int used_pd = ppgtt->num_pd_entries / GEN8_PDES_PER_PAGE;
+
+ for (i = used_pd - 1; i >= 0; i--) {
+ dma_addr_t addr = ppgtt->pd_dma_addr[i];
+ ret = gen8_write_pdp(ring, i, addr, true);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
static int gen8_mm_switch(struct i915_hw_ppgtt *ppgtt,
- struct intel_engine_cs *ring,
- bool synchronous)
+ struct intel_engine_cs *ring)
{
int i, ret;
@@ -253,7 +270,7 @@ static int gen8_mm_switch(struct i915_hw_ppgtt *ppgtt,
for (i = used_pd - 1; i >= 0; i--) {
dma_addr_t addr = ppgtt->pd_dma_addr[i];
- ret = gen8_write_pdp(ring, i, addr, synchronous);
+ ret = gen8_write_pdp(ring, i, addr, false);
if (ret)
return ret;
}
@@ -654,6 +671,7 @@ static int gen8_ppgtt_init(struct i915_hw_ppgtt *ppgtt,
uint64_t size)
}
ppgtt->enable = gen8_ppgtt_enable;
+ ppgtt->sync_switch_mm = gen8_mm_sync_switch;
ppgtt->switch_mm = gen8_mm_switch;
ppgtt->base.clear_range = gen8_ppgtt_clear_range;
ppgtt->base.insert_entries = gen8_ppgtt_insert_entries;
@@ -768,9 +786,22 @@ static uint32_t get_pd_offset(struct i915_hw_ppgtt *ppgtt)
return (ppgtt->pd_offset / 64) << 16;
}
+static int hsw_mm_sync_switch(struct i915_hw_ppgtt *ppgtt,
+ struct intel_engine_cs *ring)
+{
+ struct drm_device *dev = ppgtt->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ WARN_ON(ppgtt != dev_priv->mm.aliasing_ppgtt);
+ I915_WRITE(RING_PP_DIR_DCLV(ring), PP_DIR_DCLV_2G);
+ I915_WRITE(RING_PP_DIR_BASE(ring), get_pd_offset(ppgtt));
+ POSTING_READ(RING_PP_DIR_BASE(ring));
+
+ return 0;
+}
+
static int hsw_mm_switch(struct i915_hw_ppgtt *ppgtt,
- struct intel_engine_cs *ring,
- bool synchronous)
+ struct intel_engine_cs *ring)
{
struct drm_device *dev = ppgtt->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
@@ -783,14 +814,8 @@ static int hsw_mm_switch(struct i915_hw_ppgtt *ppgtt,
*
* FIXME: We should try not to special case reset
*/
- if (synchronous ||
- i915_reset_in_progress(&dev_priv->gpu_error)) {
- WARN_ON(ppgtt != dev_priv->mm.aliasing_ppgtt);
- I915_WRITE(RING_PP_DIR_DCLV(ring), PP_DIR_DCLV_2G);
- I915_WRITE(RING_PP_DIR_BASE(ring), get_pd_offset(ppgtt));
- POSTING_READ(RING_PP_DIR_BASE(ring));
- return 0;
- }
+ if (i915_reset_in_progress(&dev_priv->gpu_error))
+ return ppgtt->sync_switch_mm(ppgtt, ring);
/* NB: TLBs must be flushed and invalidated before a switch */
ret = ring->flush(ring, I915_GEM_GPU_DOMAINS, I915_GEM_GPU_DOMAINS);
@@ -812,9 +837,22 @@ static int hsw_mm_switch(struct i915_hw_ppgtt *ppgtt,
return 0;
}
+static int gen7_mm_sync_switch(struct i915_hw_ppgtt *ppgtt,
+ struct intel_engine_cs *ring)
+{
+ struct drm_device *dev = ppgtt->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ WARN_ON(ppgtt != dev_priv->mm.aliasing_ppgtt);
+ I915_WRITE(RING_PP_DIR_DCLV(ring), PP_DIR_DCLV_2G);
+ I915_WRITE(RING_PP_DIR_BASE(ring), get_pd_offset(ppgtt));
+ POSTING_READ(RING_PP_DIR_BASE(ring));
+
+ return 0;
+}
+
static int gen7_mm_switch(struct i915_hw_ppgtt *ppgtt,
- struct intel_engine_cs *ring,
- bool synchronous)
+ struct intel_engine_cs *ring)
{
struct drm_device *dev = ppgtt->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
@@ -827,14 +865,8 @@ static int gen7_mm_switch(struct i915_hw_ppgtt *ppgtt,
*
* FIXME: We should try not to special case reset
*/
- if (synchronous ||
- i915_reset_in_progress(&dev_priv->gpu_error)) {
- WARN_ON(ppgtt != dev_priv->mm.aliasing_ppgtt);
- I915_WRITE(RING_PP_DIR_DCLV(ring), PP_DIR_DCLV_2G);
- I915_WRITE(RING_PP_DIR_BASE(ring), get_pd_offset(ppgtt));
- POSTING_READ(RING_PP_DIR_BASE(ring));
- return 0;
- }
+ if (i915_reset_in_progress(&dev_priv->gpu_error))
+ return ppgtt->sync_switch_mm(ppgtt, ring);
/* NB: TLBs must be flushed and invalidated before a switch */
ret = ring->flush(ring, I915_GEM_GPU_DOMAINS, I915_GEM_GPU_DOMAINS);
@@ -863,16 +895,12 @@ static int gen7_mm_switch(struct i915_hw_ppgtt *ppgtt,
return 0;
}
-static int gen6_mm_switch(struct i915_hw_ppgtt *ppgtt,
- struct intel_engine_cs *ring,
- bool synchronous)
+static int gen6_mm_sync_switch(struct i915_hw_ppgtt *ppgtt,
+ struct intel_engine_cs *ring)
{
struct drm_device *dev = ppgtt->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
- if (!synchronous)
- return 0;
-
I915_WRITE(RING_PP_DIR_DCLV(ring), PP_DIR_DCLV_2G);
I915_WRITE(RING_PP_DIR_BASE(ring), get_pd_offset(ppgtt));
@@ -881,6 +909,12 @@ static int gen6_mm_switch(struct i915_hw_ppgtt *ppgtt,
return 0;
}
+static int gen6_mm_switch(struct i915_hw_ppgtt *ppgtt,
+ struct intel_engine_cs *ring)
+{
+ return 0;
+}
+
static int gen8_ppgtt_enable(struct i915_hw_ppgtt *ppgtt)
{
struct drm_device *dev = ppgtt->base.dev;
@@ -897,7 +931,7 @@ static int gen8_ppgtt_enable(struct i915_hw_ppgtt *ppgtt)
if (USES_FULL_PPGTT(dev))
continue;
- ret = ppgtt->switch_mm(ppgtt, ring, true);
+ ret = ppgtt->sync_switch_mm(ppgtt, ring);
if (ret)
goto err_out;
}
@@ -942,7 +976,7 @@ static int gen7_ppgtt_enable(struct i915_hw_ppgtt *ppgtt)
if (USES_FULL_PPGTT(dev))
continue;
- ret = ppgtt->switch_mm(ppgtt, ring, true);
+ ret = ppgtt->sync_switch_mm(ppgtt, ring);
if (ret)
return ret;
}
@@ -971,7 +1005,7 @@ static int gen6_ppgtt_enable(struct i915_hw_ppgtt *ppgtt)
I915_WRITE(GFX_MODE, _MASKED_BIT_ENABLE(GFX_PPGTT_ENABLE));
for_each_ring(ring, dev_priv, i) {
- int ret = ppgtt->switch_mm(ppgtt, ring, true);
+ int ret = ppgtt->sync_switch_mm(ppgtt, ring);
if (ret)
return ret;
}
@@ -1196,12 +1230,15 @@ static int gen6_ppgtt_init(struct i915_hw_ppgtt *ppgtt)
ppgtt->base.pte_encode = dev_priv->gtt.base.pte_encode;
if (IS_GEN6(dev)) {
ppgtt->enable = gen6_ppgtt_enable;
+ ppgtt->sync_switch_mm = gen6_mm_sync_switch;
ppgtt->switch_mm = gen6_mm_switch;
} else if (IS_HASWELL(dev)) {
ppgtt->enable = gen7_ppgtt_enable;
+ ppgtt->sync_switch_mm = hsw_mm_sync_switch;
ppgtt->switch_mm = hsw_mm_switch;
} else if (IS_GEN7(dev)) {
ppgtt->enable = gen7_ppgtt_enable;
+ ppgtt->sync_switch_mm = gen7_mm_sync_switch;
ppgtt->switch_mm = gen7_mm_switch;
} else
BUG();
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.h
b/drivers/gpu/drm/i915/i915_gem_gtt.h
index 7ab8446..c260ada 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.h
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.h
@@ -262,9 +262,10 @@ struct i915_hw_ppgtt {
struct intel_context *ctx;
int (*enable)(struct i915_hw_ppgtt *ppgtt);
+ int (*sync_switch_mm)(struct i915_hw_ppgtt *ppgtt,
+ struct intel_engine_cs *ring);
int (*switch_mm)(struct i915_hw_ppgtt *ppgtt,
- struct intel_engine_cs *ring,
- bool synchronous);
+ struct intel_engine_cs *ring);
void (*debug_dump)(struct i915_hw_ppgtt *ppgtt, struct seq_file *m);
};
--
1.9.0
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