diff options
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_gtt.c | 92 |
1 files changed, 68 insertions, 24 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index 074aec11fc9b..ee71aa558f9a 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -892,6 +892,66 @@ static inline size_t gen8_get_stolen_size(u16 bdw_gmch_ctl) return bdw_gmch_ctl << 25; /* 32 MB units */ } +static int ggtt_probe_common(struct drm_device *dev, + size_t gtt_size) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + phys_addr_t gtt_bus_addr; + int ret; + + /* For Modern GENs the PTEs and register space are split in the BAR */ + gtt_bus_addr = pci_resource_start(dev->pdev, 0) + + (pci_resource_len(dev->pdev, 0) / 2); + + dev_priv->gtt.gsm = ioremap_wc(gtt_bus_addr, gtt_size); + if (!dev_priv->gtt.gsm) { + DRM_ERROR("Failed to map the gtt page table\n"); + return -ENOMEM; + } + + ret = setup_scratch_page(dev); + if (ret) { + DRM_ERROR("Scratch setup failed\n"); + /* iounmap will also get called at remove, but meh */ + iounmap(dev_priv->gtt.gsm); + } + + return ret; +} + +static int gen8_gmch_probe(struct drm_device *dev, + size_t *gtt_total, + size_t *stolen, + phys_addr_t *mappable_base, + unsigned long *mappable_end) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + unsigned int 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); + + if (!pci_set_dma_mask(dev->pdev, DMA_BIT_MASK(39))) + pci_set_consistent_dma_mask(dev->pdev, DMA_BIT_MASK(39)); + + pci_read_config_word(dev->pdev, SNB_GMCH_CTRL, &snb_gmch_ctl); + + *stolen = gen8_get_stolen_size(snb_gmch_ctl); + + gtt_size = gen8_get_total_gtt_size(snb_gmch_ctl); + *gtt_total = (gtt_size / 8) << PAGE_SHIFT; + + ret = ggtt_probe_common(dev, gtt_size); + + dev_priv->gtt.base.clear_range = NULL; + dev_priv->gtt.base.insert_entries = NULL; + + return ret; +} + static int gen6_gmch_probe(struct drm_device *dev, size_t *gtt_total, size_t *stolen, @@ -899,7 +959,6 @@ static int gen6_gmch_probe(struct drm_device *dev, unsigned long *mappable_end) { struct drm_i915_private *dev_priv = dev->dev_private; - phys_addr_t gtt_bus_addr; unsigned int gtt_size; u16 snb_gmch_ctl; int ret; @@ -920,30 +979,12 @@ 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); - if (IS_GEN8(dev)) { - gtt_size = gen8_get_total_gtt_size(snb_gmch_ctl); - *gtt_total = (gtt_size / 8) << PAGE_SHIFT; - *stolen = gen8_get_stolen_size(snb_gmch_ctl); - } else { - gtt_size = gen6_get_total_gtt_size(snb_gmch_ctl); - *gtt_total = (gtt_size / sizeof(gen6_gtt_pte_t)) << PAGE_SHIFT; - *stolen = gen6_get_stolen_size(snb_gmch_ctl); - } + *stolen = gen6_get_stolen_size(snb_gmch_ctl); - /* For Modern GENs the PTEs and register space are split in the BAR */ - gtt_bus_addr = pci_resource_start(dev->pdev, 0) + - (pci_resource_len(dev->pdev, 0) / 2); + gtt_size = gen6_get_total_gtt_size(snb_gmch_ctl); + *gtt_total = (gtt_size / sizeof(gen6_gtt_pte_t)) << PAGE_SHIFT; - dev_priv->gtt.gsm = ioremap_wc(gtt_bus_addr, gtt_size); - if (!dev_priv->gtt.gsm) { - DRM_ERROR("Failed to map the gtt page table\n"); - return -ENOMEM; - - } - - ret = setup_scratch_page(dev); - if (ret) - DRM_ERROR("Scratch setup failed\n"); + ret = ggtt_probe_common(dev, gtt_size); dev_priv->gtt.base.clear_range = gen6_ggtt_clear_range; dev_priv->gtt.base.insert_entries = gen6_ggtt_insert_entries; @@ -997,7 +1038,7 @@ int i915_gem_gtt_init(struct drm_device *dev) if (INTEL_INFO(dev)->gen <= 5) { gtt->gtt_probe = i915_gmch_probe; gtt->base.cleanup = i915_gmch_remove; - } else { + } else if (INTEL_INFO(dev)->gen < 8) { gtt->gtt_probe = gen6_gmch_probe; gtt->base.cleanup = gen6_gmch_remove; if (IS_HASWELL(dev) && dev_priv->ellc_size) @@ -1010,6 +1051,9 @@ int i915_gem_gtt_init(struct drm_device *dev) gtt->base.pte_encode = ivb_pte_encode; else gtt->base.pte_encode = snb_pte_encode; + } else { + dev_priv->gtt.gtt_probe = gen8_gmch_probe; + dev_priv->gtt.base.cleanup = gen6_gmch_remove; } ret = gtt->gtt_probe(dev, >t->base.total, >t->stolen_size, |