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drm/i915/gtt: Clean up GGTT probing code

Browse source 
Use less pointers with the probing code, making it much less confusing
to read.

Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
This commit is contained in:
Joonas Lahtinen 2016-03-18 10:42:58 +02:00
parent 62106b4f6b
commit d507d73578
2 changed files with 46 additions and 59 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

100
drivers/gpu/drm/i915/i915_gem_gtt.c
View file

@ -3034,20 +3034,16 @@ static void chv_setup_private_ppat(struct drm_i915_private *dev_priv)
I915_WRITE(GEN8_PRIVATE_PAT_HI, pat >> 32);
}
static int gen8_gmch_probe(struct drm_device *dev,
u64 *gtt_total,
size_t *stolen,
phys_addr_t *mappable_base,
u64 *mappable_end)
static int gen8_gmch_probe(struct i915_ggtt *ggtt)
{
struct drm_device *dev = ggtt->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
u64 gtt_size;
u16 snb_gmch_ctl;
int ret;
/* TODO: We're not aware of mappable constraints on gen8 yet */
*mappable_base = pci_resource_start(dev->pdev, 2);
*mappable_end = pci_resource_len(dev->pdev, 2);
ggtt->mappable_base = pci_resource_start(dev->pdev, 2);
ggtt->mappable_end = pci_resource_len(dev->pdev, 2);
if (!pci_set_dma_mask(dev->pdev, DMA_BIT_MASK(39)))
pci_set_consistent_dma_mask(dev->pdev, DMA_BIT_MASK(39));
@ -3055,55 +3051,51 @@ static int gen8_gmch_probe(struct drm_device *dev,
pci_read_config_word(dev->pdev, SNB_GMCH_CTRL, &snb_gmch_ctl);
if (INTEL_INFO(dev)->gen >= 9) {
*stolen = gen9_get_stolen_size(snb_gmch_ctl);
gtt_size = gen8_get_total_gtt_size(snb_gmch_ctl);
ggtt->stolen_size = gen9_get_stolen_size(snb_gmch_ctl);
ggtt->size = gen8_get_total_gtt_size(snb_gmch_ctl);
} else if (IS_CHERRYVIEW(dev)) {
*stolen = chv_get_stolen_size(snb_gmch_ctl);
gtt_size = chv_get_total_gtt_size(snb_gmch_ctl);
ggtt->stolen_size = chv_get_stolen_size(snb_gmch_ctl);
ggtt->size = chv_get_total_gtt_size(snb_gmch_ctl);
} else {
*stolen = gen8_get_stolen_size(snb_gmch_ctl);
gtt_size = gen8_get_total_gtt_size(snb_gmch_ctl);
ggtt->stolen_size = gen8_get_stolen_size(snb_gmch_ctl);
ggtt->size = gen8_get_total_gtt_size(snb_gmch_ctl);
}
*gtt_total = (gtt_size / sizeof(gen8_pte_t)) << PAGE_SHIFT;
ggtt->base.total = (ggtt->size / sizeof(gen8_pte_t)) << PAGE_SHIFT;
if (IS_CHERRYVIEW(dev) || IS_BROXTON(dev))
chv_setup_private_ppat(dev_priv);
else
bdw_setup_private_ppat(dev_priv);
ret = ggtt_probe_common(dev, gtt_size);
dev_priv->ggtt.base.clear_range = gen8_ggtt_clear_range;
dev_priv->ggtt.base.insert_entries = gen8_ggtt_insert_entries;
dev_priv->ggtt.base.bind_vma = ggtt_bind_vma;
dev_priv->ggtt.base.unbind_vma = ggtt_unbind_vma;
ret = ggtt_probe_common(dev, ggtt->size);
ggtt->base.clear_range = gen8_ggtt_clear_range;
if (IS_CHERRYVIEW(dev_priv))
dev_priv->ggtt.base.insert_entries = gen8_ggtt_insert_entries__BKL;
ggtt->base.insert_entries = gen8_ggtt_insert_entries__BKL;
else
ggtt->base.insert_entries = gen8_ggtt_insert_entries;
ggtt->base.bind_vma = ggtt_bind_vma;
ggtt->base.unbind_vma = ggtt_unbind_vma;
return ret;
}
static int gen6_gmch_probe(struct drm_device *dev,
u64 *gtt_total,
size_t *stolen,
phys_addr_t *mappable_base,
u64 *mappable_end)
static int gen6_gmch_probe(struct i915_ggtt *ggtt)
{
struct drm_i915_private *dev_priv = dev->dev_private;
unsigned int gtt_size;
struct drm_device *dev = ggtt->base.dev;
u16 snb_gmch_ctl;
int ret;
*mappable_base = pci_resource_start(dev->pdev, 2);
*mappable_end = pci_resource_len(dev->pdev, 2);
ggtt->mappable_base = pci_resource_start(dev->pdev, 2);
ggtt->mappable_end = pci_resource_len(dev->pdev, 2);
/* 64/512MB is the current min/max we actually know of, but this is just
* a coarse sanity check.
*/
if ((*mappable_end < (64<<20) || (*mappable_end > (512<<20)))) {
DRM_ERROR("Unknown GMADR size (%llx)\n", *mappable_end);
if ((ggtt->mappable_end < (64<<20) || (ggtt->mappable_end > (512<<20)))) {
DRM_ERROR("Unknown GMADR size (%llx)\n", ggtt->mappable_end);
return -ENXIO;
}
@ -3111,17 +3103,16 @@ static int gen6_gmch_probe(struct drm_device *dev,
pci_set_consistent_dma_mask(dev->pdev, DMA_BIT_MASK(40));
pci_read_config_word(dev->pdev, SNB_GMCH_CTRL, &snb_gmch_ctl);
*stolen = gen6_get_stolen_size(snb_gmch_ctl);
ggtt->stolen_size = gen6_get_stolen_size(snb_gmch_ctl);
ggtt->size = gen6_get_total_gtt_size(snb_gmch_ctl);
ggtt->base.total = (ggtt->size / sizeof(gen6_pte_t)) << PAGE_SHIFT;
gtt_size = gen6_get_total_gtt_size(snb_gmch_ctl);
*gtt_total = (gtt_size / sizeof(gen6_pte_t)) << PAGE_SHIFT;
ret = ggtt_probe_common(dev, ggtt->size);
ret = ggtt_probe_common(dev, gtt_size);
dev_priv->ggtt.base.clear_range = gen6_ggtt_clear_range;
dev_priv->ggtt.base.insert_entries = gen6_ggtt_insert_entries;
dev_priv->ggtt.base.bind_vma = ggtt_bind_vma;
dev_priv->ggtt.base.unbind_vma = ggtt_unbind_vma;
ggtt->base.clear_range = gen6_ggtt_clear_range;
ggtt->base.insert_entries = gen6_ggtt_insert_entries;
ggtt->base.bind_vma = ggtt_bind_vma;
ggtt->base.unbind_vma = ggtt_unbind_vma;
return ret;
}
@ -3134,12 +3125,9 @@ static void gen6_gmch_remove(struct i915_address_space *vm)
free_scratch_page(vm->dev, vm->scratch_page);
}
static int i915_gmch_probe(struct drm_device *dev,
u64 *gtt_total,
size_t *stolen,
phys_addr_t *mappable_base,
u64 *mappable_end)
static int i915_gmch_probe(struct i915_ggtt *ggtt)
{
struct drm_device *dev = ggtt->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
int ret;
@ -3149,15 +3137,16 @@ static int i915_gmch_probe(struct drm_device *dev,
return -EIO;
}
intel_gtt_get(gtt_total, stolen, mappable_base, mappable_end);
intel_gtt_get(&ggtt->base.total, &ggtt->stolen_size,
&ggtt->mappable_base, &ggtt->mappable_end);
dev_priv->ggtt.do_idle_maps = needs_idle_maps(dev_priv->dev);
dev_priv->ggtt.base.insert_entries = i915_ggtt_insert_entries;
dev_priv->ggtt.base.clear_range = i915_ggtt_clear_range;
dev_priv->ggtt.base.bind_vma = ggtt_bind_vma;
dev_priv->ggtt.base.unbind_vma = ggtt_unbind_vma;
ggtt->do_idle_maps = needs_idle_maps(dev_priv->dev);
ggtt->base.insert_entries = i915_ggtt_insert_entries;
ggtt->base.clear_range = i915_ggtt_clear_range;
ggtt->base.bind_vma = ggtt_bind_vma;
ggtt->base.unbind_vma = ggtt_unbind_vma;
if (unlikely(dev_priv->ggtt.do_idle_maps))
if (unlikely(ggtt->do_idle_maps))
DRM_INFO("applying Ironlake quirks for intel_iommu\n");
return 0;
@ -3198,8 +3187,7 @@ int i915_gem_gtt_init(struct drm_device *dev)
ggtt->base.dev = dev;
ggtt->base.is_ggtt = true;
ret = ggtt->probe(dev, &ggtt->base.total, &ggtt->stolen_size,
&ggtt->mappable_base, &ggtt->mappable_end);
ret = ggtt->probe(ggtt);
if (ret)
return ret;

5
drivers/gpu/drm/i915/i915_gem_gtt.h
View file

@ -346,6 +346,7 @@ struct i915_ggtt {
size_t stolen_usable_size; /* Total size minus BIOS reserved */
size_t stolen_reserved_base;
size_t stolen_reserved_size;
size_t size; /* Total size of Global GTT */
u64 mappable_end; /* End offset that we can CPU map */
struct io_mapping *mappable; /* Mapping to our CPU mappable region */
phys_addr_t mappable_base; /* PA of our GMADR */
@ -357,9 +358,7 @@ struct i915_ggtt {
int mtrr;
int (*probe)(struct drm_device *dev, u64 *gtt_total,
size_t *stolen, phys_addr_t *mappable_base,
u64 *mappable_end);
int (*probe)(struct i915_ggtt *ggtt);
};
struct i915_hw_ppgtt {