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drm/i915: Move even more gtt code to i915_gem_gtt

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This really should have been part of the kill agp series.

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ben Widawsky 2012-12-18 10:31:25 -08:00 committed by Daniel Vetter
parent e94fbaa875
commit d7e5008f7c
3 changed files with 61 additions and 56 deletions
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7
drivers/gpu/drm/i915/i915_drv.h
View File

@ -1587,10 +1587,9 @@ void i915_gem_gtt_bind_object(struct drm_i915_gem_object *obj,
enum i915_cache_level cache_level);
void i915_gem_gtt_unbind_object(struct drm_i915_gem_object *obj);
void i915_gem_gtt_finish_object(struct drm_i915_gem_object *obj);
void i915_gem_init_global_gtt(struct drm_device *dev,
unsigned long start,
unsigned long mappable_end,
unsigned long end);
void i915_gem_init_global_gtt(struct drm_device *dev);
void i915_gem_setup_global_gtt(struct drm_device *dev, unsigned long start,
unsigned long mappable_end, unsigned long end);
int i915_gem_gtt_init(struct drm_device *dev);
void i915_gem_gtt_fini(struct drm_device *dev);
static inline void i915_gem_chipset_flush(struct drm_device *dev)

51
drivers/gpu/drm/i915/i915_gem.c
View File

@ -163,8 +163,8 @@ i915_gem_init_ioctl(struct drm_device *dev, void *data,
return -ENODEV;
mutex_lock(&dev->struct_mutex);
i915_gem_init_global_gtt(dev, args->gtt_start,
args->gtt_end, args->gtt_end);
i915_gem_setup_global_gtt(dev, args->gtt_start, args->gtt_end,
args->gtt_end);
mutex_unlock(&dev->struct_mutex);
return 0;
@ -3981,58 +3981,13 @@ cleanup_render_ring:
return ret;
}
static bool
intel_enable_ppgtt(struct drm_device *dev)
{
if (i915_enable_ppgtt >= 0)
return i915_enable_ppgtt;
#ifdef CONFIG_INTEL_IOMMU
/* Disable ppgtt on SNB if VT-d is on. */
if (INTEL_INFO(dev)->gen == 6 && intel_iommu_gfx_mapped)
return false;
#endif
return true;
}
int i915_gem_init(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
unsigned long gtt_size, mappable_size;
int ret;
gtt_size = dev_priv->mm.gtt->gtt_total_entries << PAGE_SHIFT;
mappable_size = dev_priv->mm.gtt->gtt_mappable_entries << PAGE_SHIFT;
mutex_lock(&dev->struct_mutex);
if (intel_enable_ppgtt(dev) && HAS_ALIASING_PPGTT(dev)) {
/* PPGTT pdes are stolen from global gtt ptes, so shrink the
* aperture accordingly when using aliasing ppgtt. */
gtt_size -= I915_PPGTT_PD_ENTRIES*PAGE_SIZE;
i915_gem_init_global_gtt(dev, 0, mappable_size, gtt_size);
ret = i915_gem_init_aliasing_ppgtt(dev);
if (ret) {
mutex_unlock(&dev->struct_mutex);
return ret;
}
} else {
/* Let GEM Manage all of the aperture.
*
* However, leave one page at the end still bound to the scratch
* page. There are a number of places where the hardware
* apparently prefetches past the end of the object, and we've
* seen multiple hangs with the GPU head pointer stuck in a
* batchbuffer bound at the last page of the aperture. One page
* should be enough to keep any prefetching inside of the
* aperture.
*/
i915_gem_init_global_gtt(dev, 0, mappable_size,
gtt_size);
}
i915_gem_init_global_gtt(dev);
ret = i915_gem_init_hw(dev);
mutex_unlock(&dev->struct_mutex);
if (ret) {

59
drivers/gpu/drm/i915/i915_gem_gtt.c
View File

@ -525,10 +525,10 @@ static void i915_gtt_color_adjust(struct drm_mm_node *node,
}
}
void i915_gem_init_global_gtt(struct drm_device *dev,
unsigned long start,
unsigned long mappable_end,
unsigned long end)
void i915_gem_setup_global_gtt(struct drm_device *dev,
unsigned long start,
unsigned long mappable_end,
unsigned long end)
{
drm_i915_private_t *dev_priv = dev->dev_private;
struct drm_mm_node *entry;
@ -573,6 +573,57 @@ void i915_gem_init_global_gtt(struct drm_device *dev,
i915_ggtt_clear_range(dev, end / PAGE_SIZE - 1, 1);
}
static bool
intel_enable_ppgtt(struct drm_device *dev)
{
if (i915_enable_ppgtt >= 0)
return i915_enable_ppgtt;
#ifdef CONFIG_INTEL_IOMMU
/* Disable ppgtt on SNB if VT-d is on. */
if (INTEL_INFO(dev)->gen == 6 && intel_iommu_gfx_mapped)
return false;
#endif
return true;
}
void i915_gem_init_global_gtt(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
unsigned long gtt_size, mappable_size;
int ret;
gtt_size = dev_priv->mm.gtt->gtt_total_entries << PAGE_SHIFT;
mappable_size = dev_priv->mm.gtt->gtt_mappable_entries << PAGE_SHIFT;
if (intel_enable_ppgtt(dev) && HAS_ALIASING_PPGTT(dev)) {
/* PPGTT pdes are stolen from global gtt ptes, so shrink the
* aperture accordingly when using aliasing ppgtt. */
gtt_size -= I915_PPGTT_PD_ENTRIES*PAGE_SIZE;
i915_gem_setup_global_gtt(dev, 0, mappable_size, gtt_size);
ret = i915_gem_init_aliasing_ppgtt(dev);
if (ret) {
mutex_unlock(&dev->struct_mutex);
return;
}
} else {
/* Let GEM Manage all of the aperture.
*
* However, leave one page at the end still bound to the scratch
* page. There are a number of places where the hardware
* apparently prefetches past the end of the object, and we've
* seen multiple hangs with the GPU head pointer stuck in a
* batchbuffer bound at the last page of the aperture. One page
* should be enough to keep any prefetching inside of the
* aperture.
*/
i915_gem_setup_global_gtt(dev, 0, mappable_size, gtt_size);
}
}
static int setup_scratch_page(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;