From: Chris Wilson Date: Mon, 9 Jan 2017 16:16:13 +0000 (+0000) Subject: drm/i915: Move ggtt fence/alignment to i915_gem_tiling.c X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=91d4e0aa923e13ef832e9d793b6d080b6318f2d9;p=linux-beck.git drm/i915: Move ggtt fence/alignment to i915_gem_tiling.c Rename i915_gem_get_ggtt_size() and i915_gem_get_ggtt_alignment() to i915_gem_fence_size() and i915_gem_fence_alignment() respectively to better match usage. Similarly move the pair of functions into i915_gem_tiling.c next to the fence restrictions. Suggested-by: Joonas Lahtinen Signed-off-by: Chris Wilson Cc: Joonas Lahtinen Link: http://patchwork.freedesktop.org/patch/msgid/20170109161613.11881-6-chris@chris-wilson.co.uk Reviewed-by: Joonas Lahtinen --- diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 5ee76628be98..2b325032fedc 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -3360,11 +3360,6 @@ int i915_gem_object_attach_phys(struct drm_i915_gem_object *obj, int i915_gem_open(struct drm_device *dev, struct drm_file *file); void i915_gem_release(struct drm_device *dev, struct drm_file *file); -u32 i915_gem_get_ggtt_size(struct drm_i915_private *dev_priv, u32 size, - int tiling_mode, unsigned int stride); -u32 i915_gem_get_ggtt_alignment(struct drm_i915_private *dev_priv, u32 size, - int tiling_mode, unsigned int stride); - int i915_gem_object_set_cache_level(struct drm_i915_gem_object *obj, enum i915_cache_level cache_level); @@ -3531,6 +3526,11 @@ static inline bool i915_gem_object_needs_bit17_swizzle(struct drm_i915_gem_objec i915_gem_object_is_tiled(obj); } +u32 i915_gem_fence_size(struct drm_i915_private *dev_priv, u32 size, + unsigned int tiling, unsigned int stride); +u32 i915_gem_fence_alignment(struct drm_i915_private *dev_priv, u32 size, + unsigned int tiling, unsigned int stride); + /* i915_debugfs.c */ #ifdef CONFIG_DEBUG_FS int i915_debugfs_register(struct drm_i915_private *dev_priv); diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 1f9496e587dc..d1cf0ed6821d 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -2016,75 +2016,6 @@ void i915_gem_runtime_suspend(struct drm_i915_private *dev_priv) } } -/** - * i915_gem_get_ggtt_size - return required global GTT size for an object - * @dev_priv: i915 device - * @size: object size - * @tiling_mode: tiling mode - * @stride: tiling stride - * - * Return the required global GTT size for an object, taking into account - * potential fence register mapping. - */ -u32 i915_gem_get_ggtt_size(struct drm_i915_private *dev_priv, - u32 size, int tiling_mode, unsigned int stride) -{ - u32 ggtt_size; - - GEM_BUG_ON(!size); - - if (tiling_mode == I915_TILING_NONE) - return size; - - GEM_BUG_ON(!stride); - - if (INTEL_GEN(dev_priv) >= 4) { - stride *= i915_gem_tile_height(tiling_mode); - GEM_BUG_ON(stride & 4095); - return roundup(size, stride); - } - - /* Previous chips need a power-of-two fence region when tiling */ - if (IS_GEN3(dev_priv)) - ggtt_size = 1024*1024; - else - ggtt_size = 512*1024; - - while (ggtt_size < size) - ggtt_size <<= 1; - - return ggtt_size; -} - -/** - * i915_gem_get_ggtt_alignment - return required global GTT alignment - * @dev_priv: i915 device - * @size: object size - * @tiling_mode: tiling mode - * @stride: tiling stride - * - * Return the required global GTT alignment for an object, taking into account - * potential fence register mapping. - */ -u32 i915_gem_get_ggtt_alignment(struct drm_i915_private *dev_priv, u32 size, - int tiling_mode, unsigned int stride) -{ - GEM_BUG_ON(!size); - - /* - * Minimum alignment is 4k (GTT page size), but might be greater - * if a fence register is needed for the object. - */ - if (INTEL_GEN(dev_priv) >= 4 || tiling_mode == I915_TILING_NONE) - return 4096; - - /* - * Previous chips need to be aligned to the size of the smallest - * fence register that can contain the object. - */ - return i915_gem_get_ggtt_size(dev_priv, size, tiling_mode, stride); -} - static int i915_gem_object_create_mmap_offset(struct drm_i915_gem_object *obj) { struct drm_i915_private *dev_priv = to_i915(obj->base.dev); diff --git a/drivers/gpu/drm/i915/i915_gem_tiling.c b/drivers/gpu/drm/i915/i915_gem_tiling.c index 23a896cd934f..30cb869759fb 100644 --- a/drivers/gpu/drm/i915/i915_gem_tiling.c +++ b/drivers/gpu/drm/i915/i915_gem_tiling.c @@ -58,6 +58,75 @@ * invovlement. */ +/** + * i915_gem_fence_size - required global GTT size for a fence + * @i915: i915 device + * @size: object size + * @tiling: tiling mode + * @stride: tiling stride + * + * Return the required global GTT size for a fence (view of a tiled object), + * taking into account potential fence register mapping. + */ +u32 i915_gem_fence_size(struct drm_i915_private *i915, + u32 size, unsigned int tiling, unsigned int stride) +{ + u32 ggtt_size; + + GEM_BUG_ON(!size); + + if (tiling == I915_TILING_NONE) + return size; + + GEM_BUG_ON(!stride); + + if (INTEL_GEN(i915) >= 4) { + stride *= i915_gem_tile_height(tiling); + GEM_BUG_ON(stride & 4095); + return roundup(size, stride); + } + + /* Previous chips need a power-of-two fence region when tiling */ + if (IS_GEN3(i915)) + ggtt_size = 1024*1024; + else + ggtt_size = 512*1024; + + while (ggtt_size < size) + ggtt_size <<= 1; + + return ggtt_size; +} + +/** + * i915_gem_fence_alignment - required global GTT alignment for a fence + * @i915: i915 device + * @size: object size + * @tiling: tiling mode + * @stride: tiling stride + * + * Return the required global GTT alignment for a fence (a view of a tiled + * object), taking into account potential fence register mapping. + */ +u32 i915_gem_fence_alignment(struct drm_i915_private *i915, u32 size, + unsigned int tiling, unsigned int stride) +{ + GEM_BUG_ON(!size); + + /* + * Minimum alignment is 4k (GTT page size), but might be greater + * if a fence register is needed for the object. + */ + if (INTEL_GEN(i915) >= 4 || tiling == I915_TILING_NONE) + return 4096; + + /* + * Previous chips need to be aligned to the size of the smallest + * fence register that can contain the object. + */ + return i915_gem_fence_size(i915, size, tiling, stride); +} + /* Check pitch constriants for all chips & tiling formats */ static bool i915_tiling_ok(struct drm_i915_private *dev_priv, @@ -126,11 +195,11 @@ static bool i915_vma_fence_prepare(struct i915_vma *vma, if (!i915_vma_is_map_and_fenceable(vma)) return true; - size = i915_gem_get_ggtt_size(i915, vma->size, tiling_mode, stride); + size = i915_gem_fence_size(i915, vma->size, tiling_mode, stride); if (vma->node.size < size) return false; - alignment = i915_gem_get_ggtt_alignment(i915, vma->size, tiling_mode, stride); + alignment = i915_gem_fence_alignment(i915, vma->size, tiling_mode, stride); if (vma->node.start & (alignment - 1)) return false; @@ -276,12 +345,12 @@ i915_gem_set_tiling(struct drm_device *dev, void *data, if (!i915_vma_is_ggtt(vma)) break; - vma->fence_size = i915_gem_get_ggtt_size(dev_priv, vma->size, - args->tiling_mode, - args->stride); - vma->fence_alignment = i915_gem_get_ggtt_alignment(dev_priv, vma->size, - args->tiling_mode, - args->stride); + vma->fence_size = i915_gem_fence_size(dev_priv, vma->size, + args->tiling_mode, + args->stride); + vma->fence_alignment = i915_gem_fence_alignment(dev_priv, vma->size, + args->tiling_mode, + args->stride); if (vma->fence) vma->fence->dirty = true; diff --git a/drivers/gpu/drm/i915/i915_vma.c b/drivers/gpu/drm/i915/i915_vma.c index a605d735662c..f137475fab51 100644 --- a/drivers/gpu/drm/i915/i915_vma.c +++ b/drivers/gpu/drm/i915/i915_vma.c @@ -112,14 +112,14 @@ __i915_vma_create(struct drm_i915_gem_object *obj, if (i915_is_ggtt(vm)) { GEM_BUG_ON(overflows_type(vma->size, u32)); - vma->fence_size = i915_gem_get_ggtt_size(vm->i915, vma->size, - i915_gem_object_get_tiling(obj), - i915_gem_object_get_stride(obj)); + vma->fence_size = i915_gem_fence_size(vm->i915, vma->size, + i915_gem_object_get_tiling(obj), + i915_gem_object_get_stride(obj)); GEM_BUG_ON(vma->fence_size & 4095); - vma->fence_alignment = i915_gem_get_ggtt_alignment(vm->i915, vma->size, - i915_gem_object_get_tiling(obj), - i915_gem_object_get_stride(obj)); + vma->fence_alignment = i915_gem_fence_alignment(vm->i915, vma->size, + i915_gem_object_get_tiling(obj), + i915_gem_object_get_stride(obj)); GEM_BUG_ON(!is_power_of_2(vma->fence_alignment)); vma->flags |= I915_VMA_GGTT;