Michal,
On 11/06/2019 13:23, Tvrtko Ursulin wrote:
From: Tvrtko Ursulin <tvrtko.ursu...@intel.com>
These functions operate on ggtt so make them take that directly as
parameter.
At the same time move the USES_GUC conditional down to
intel_guc_reserve_ggtt_top for symmetry with
intel_guc_reserved_gtt_size.
v2:
* Rename and move functions to be static in i915_gem_gtt.c (Michal)
v3:
* Add comment explaining reason for reservation, add assert and fix
error message. (Michal)
v4:
* Fix checkpatch error.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursu...@intel.com>
Cc: Michal Wajdeczko <michal.wajdec...@intel.com>
Reviewed-by: Michal Wajdeczko <michal.wajdec...@intel.com>
I've assumed I would be able to implement your small suggestions
correctly so I've kept the r-b. Could you just give it a quick glance
over to see if that is indeed true.
Regards,
Tvrtko
---
drivers/gpu/drm/i915/i915_gem_gtt.c | 43 ++++++++++++++++++++++++-----
drivers/gpu/drm/i915/intel_guc.c | 27 ------------------
drivers/gpu/drm/i915/intel_guc.h | 2 --
3 files changed, 36 insertions(+), 36 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c
b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 5b5125ee49f3..c13b52b66ef1 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -2807,6 +2807,32 @@ static void fini_aliasing_ppgtt(struct drm_i915_private
*i915)
ggtt->vm.vma_ops.unbind_vma = ggtt_unbind_vma;
}
+static int ggtt_reserve_guc_top(struct i915_ggtt *ggtt)
+{
+ u64 size;
+ int ret;
+
+ if (!USES_GUC(ggtt->vm.i915))
+ return 0;
+
+ GEM_BUG_ON(ggtt->vm.total <= GUC_GGTT_TOP);
+ size = ggtt->vm.total - GUC_GGTT_TOP;
+
+ ret = i915_gem_gtt_reserve(&ggtt->vm, &ggtt->uc_fw, size,
+ GUC_GGTT_TOP, I915_COLOR_UNEVICTABLE,
+ PIN_NOEVICT);
+ if (ret)
+ DRM_DEBUG_DRIVER("Failed to reserve top of GGTT for GuC\n");
+
+ return ret;
+}
+
+static void ggtt_release_guc_top(struct i915_ggtt *ggtt)
+{
+ if (drm_mm_node_allocated(&ggtt->uc_fw))
+ drm_mm_remove_node(&ggtt->uc_fw);
+}
+
int i915_gem_init_ggtt(struct drm_i915_private *dev_priv)
{
/* Let GEM Manage all of the aperture.
@@ -2844,11 +2870,14 @@ int i915_gem_init_ggtt(struct drm_i915_private
*dev_priv)
if (ret)
return ret;
- if (USES_GUC(dev_priv)) {
- ret = intel_guc_reserve_ggtt_top(&dev_priv->guc);
- if (ret)
- goto err_reserve;
- }
+ /*
+ * The upper portion of the GuC address space has a sizeable hole
+ * (several MB) that is inaccessible by GuC. Reserve this range within
+ * GGTT as it can comfortably hold GuC/HuC firmware images.
+ */
+ ret = ggtt_reserve_guc_top(ggtt);
+ if (ret)
+ goto err_reserve;
/* Clear any non-preallocated blocks */
drm_mm_for_each_hole(entry, &ggtt->vm.mm, hole_start, hole_end) {
@@ -2870,7 +2899,7 @@ int i915_gem_init_ggtt(struct drm_i915_private *dev_priv)
return 0;
err_appgtt:
- intel_guc_release_ggtt_top(&dev_priv->guc);
+ ggtt_release_guc_top(ggtt);
err_reserve:
drm_mm_remove_node(&ggtt->error_capture);
return ret;
@@ -2897,7 +2926,7 @@ void i915_ggtt_cleanup_hw(struct drm_i915_private
*dev_priv)
if (drm_mm_node_allocated(&ggtt->error_capture))
drm_mm_remove_node(&ggtt->error_capture);
- intel_guc_release_ggtt_top(&dev_priv->guc);
+ ggtt_release_guc_top(ggtt);
if (drm_mm_initialized(&ggtt->vm.mm)) {
intel_vgt_deballoon(dev_priv);
diff --git a/drivers/gpu/drm/i915/intel_guc.c b/drivers/gpu/drm/i915/intel_guc.c
index d45d97624402..c40a6efdd33a 100644
--- a/drivers/gpu/drm/i915/intel_guc.c
+++ b/drivers/gpu/drm/i915/intel_guc.c
@@ -685,30 +685,3 @@ struct i915_vma *intel_guc_allocate_vma(struct intel_guc
*guc, u32 size)
i915_gem_object_put(obj);
return vma;
}
-
-int intel_guc_reserve_ggtt_top(struct intel_guc *guc)
-{
- struct drm_i915_private *i915 = guc_to_i915(guc);
- struct i915_ggtt *ggtt = &i915->ggtt;
- u64 size;
- int ret;
-
- size = ggtt->vm.total - GUC_GGTT_TOP;
-
- ret = i915_gem_gtt_reserve(&ggtt->vm, &ggtt->uc_fw, size,
- GUC_GGTT_TOP, I915_COLOR_UNEVICTABLE,
- PIN_NOEVICT);
- if (ret)
- DRM_DEBUG_DRIVER("GuC: failed to reserve top of ggtt\n");
-
- return ret;
-}
-
-void intel_guc_release_ggtt_top(struct intel_guc *guc)
-{
- struct drm_i915_private *i915 = guc_to_i915(guc);
- struct i915_ggtt *ggtt = &i915->ggtt;
-
- if (drm_mm_node_allocated(&ggtt->uc_fw))
- drm_mm_remove_node(&ggtt->uc_fw);
-}
diff --git a/drivers/gpu/drm/i915/intel_guc.h b/drivers/gpu/drm/i915/intel_guc.h
index 85c3b02a0c08..08c906abdfa2 100644
--- a/drivers/gpu/drm/i915/intel_guc.h
+++ b/drivers/gpu/drm/i915/intel_guc.h
@@ -172,8 +172,6 @@ int intel_guc_auth_huc(struct intel_guc *guc, u32
rsa_offset);
int intel_guc_suspend(struct intel_guc *guc);
int intel_guc_resume(struct intel_guc *guc);
struct i915_vma *intel_guc_allocate_vma(struct intel_guc *guc, u32 size);
-int intel_guc_reserve_ggtt_top(struct intel_guc *guc);
-void intel_guc_release_ggtt_top(struct intel_guc *guc);
static inline bool intel_guc_is_loaded(struct intel_guc *guc)
{
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