diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_gtt.c | 14 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 2 |
2 files changed, 15 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index e74be0c2c6a..814ed3ed779 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -512,6 +512,15 @@ static inline unsigned int gen6_get_stolen_size(u16 snb_gmch_ctl) return snb_gmch_ctl << 25; /* 32 MB units */ } +static inline unsigned int gen7_get_stolen_size(u16 snb_gmch_ctl) +{ + static const int stolen_decoder[] = { + 0, 0, 0, 0, 0, 32, 48, 64, 128, 256, 96, 160, 224, 352}; + snb_gmch_ctl >>= IVB_GMCH_GMS_SHIFT; + snb_gmch_ctl &= IVB_GMCH_GMS_MASK; + return stolen_decoder[snb_gmch_ctl] << 20; +} + int i915_gem_gtt_init(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; @@ -557,7 +566,10 @@ int i915_gem_gtt_init(struct drm_device *dev) pci_read_config_word(dev->pdev, SNB_GMCH_CTRL, &snb_gmch_ctl); dev_priv->mm.gtt->gtt_total_entries = gen6_get_total_gtt_size(snb_gmch_ctl) / sizeof(gtt_pte_t); - dev_priv->mm.gtt->stolen_size = gen6_get_stolen_size(snb_gmch_ctl); + if (INTEL_INFO(dev)->gen < 7) + dev_priv->mm.gtt->stolen_size = gen6_get_stolen_size(snb_gmch_ctl); + else + dev_priv->mm.gtt->stolen_size = gen7_get_stolen_size(snb_gmch_ctl); dev_priv->mm.gtt->gtt_mappable_entries = pci_resource_len(dev->pdev, 2) >> PAGE_SHIFT; /* 64/512MB is the current min/max we actually know of, but this is just a diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 449403f60e4..e62b347dc04 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -46,6 +46,8 @@ #define SNB_GMCH_GGMS_MASK 0x3 #define SNB_GMCH_GMS_SHIFT 3 /* Graphics Mode Select */ #define SNB_GMCH_GMS_MASK 0x1f +#define IVB_GMCH_GMS_SHIFT 4 +#define IVB_GMCH_GMS_MASK 0xf /* PCI config space */ |