From d507d73578ef7aa1ffcd122e51caa59e4492cb46 Mon Sep 17 00:00:00 2001 From: Joonas Lahtinen Date: Fri, 18 Mar 2016 10:42:58 +0200 Subject: [PATCH] drm/i915/gtt: Clean up GGTT probing code Use less pointers with the probing code, making it much less confusing to read. Cc: Mika Kuoppala Reviewed-by: Chris Wilson Signed-off-by: Joonas Lahtinen --- drivers/gpu/drm/i915/i915_gem_gtt.c | 100 ++++++++++++---------------- drivers/gpu/drm/i915/i915_gem_gtt.h | 5 +- 2 files changed, 46 insertions(+), 59 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index 41b4606293d1..799576e13f65 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -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); - - gtt_size = gen6_get_total_gtt_size(snb_gmch_ctl); - *gtt_total = (gtt_size / sizeof(gen6_pte_t)) << PAGE_SHIFT; + 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; - ret = ggtt_probe_common(dev, gtt_size); + ret = ggtt_probe_common(dev, ggtt->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; diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.h b/drivers/gpu/drm/i915/i915_gem_gtt.h index 2906bb1ee290..d804be00ab41 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.h +++ b/drivers/gpu/drm/i915/i915_gem_gtt.h @@ -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 { -- GitLab