From 72405c3d7850c85dccbe4629720004ae933c2add Mon Sep 17 00:00:00 2001 From: Matthew Auld Date: Fri, 18 Oct 2019 10:07:51 +0100 Subject: [PATCH] drm/i915: treat stolen as a region Convert stolen memory over to a region object. Still leaves open the question with what to do with pre-allocated objects... Signed-off-by: Matthew Auld Cc: Joonas Lahtinen Cc: Abdiel Janulgue Reviewed-by: Chris Wilson Signed-off-by: Chris Wilson Link: https://patchwork.freedesktop.org/patch/msgid/20191018090751.28295-3-matthew.auld@intel.com --- drivers/gpu/drm/i915/gem/i915_gem_stolen.c | 65 +++++++++++++++++++++++++----- drivers/gpu/drm/i915/gem/i915_gem_stolen.h | 3 +- drivers/gpu/drm/i915/i915_gem_gtt.c | 14 ++----- drivers/gpu/drm/i915/i915_pci.c | 2 +- 4 files changed, 61 insertions(+), 23 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_stolen.c b/drivers/gpu/drm/i915/gem/i915_gem_stolen.c index c76260c..57cd8bc 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_stolen.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_stolen.c @@ -10,6 +10,7 @@ #include #include +#include "gem/i915_gem_region.h" #include "i915_drv.h" #include "i915_gem_stolen.h" @@ -150,7 +151,7 @@ static int i915_adjust_stolen(struct drm_i915_private *dev_priv, return 0; } -void i915_gem_cleanup_stolen(struct drm_i915_private *dev_priv) +static void i915_gem_cleanup_stolen(struct drm_i915_private *dev_priv) { if (!drm_mm_initialized(&dev_priv->mm.stolen)) return; @@ -355,7 +356,7 @@ static void icl_get_stolen_reserved(struct drm_i915_private *i915, } } -int i915_gem_init_stolen(struct drm_i915_private *dev_priv) +static int i915_gem_init_stolen(struct drm_i915_private *dev_priv) { resource_size_t reserved_base, stolen_top; resource_size_t reserved_total, reserved_size; @@ -539,6 +540,9 @@ i915_gem_object_release_stolen(struct drm_i915_gem_object *obj) i915_gem_stolen_remove_node(dev_priv, stolen); kfree(stolen); + + if (obj->mm.region) + i915_gem_object_release_memory_region(obj); } static const struct drm_i915_gem_object_ops i915_gem_object_stolen_ops = { @@ -548,8 +552,9 @@ static const struct drm_i915_gem_object_ops i915_gem_object_stolen_ops = { }; static struct drm_i915_gem_object * -_i915_gem_object_create_stolen(struct drm_i915_private *dev_priv, - struct drm_mm_node *stolen) +__i915_gem_object_create_stolen(struct drm_i915_private *dev_priv, + struct drm_mm_node *stolen, + struct intel_memory_region *mem) { struct drm_i915_gem_object *obj; unsigned int cache_level; @@ -571,6 +576,9 @@ _i915_gem_object_create_stolen(struct drm_i915_private *dev_priv, if (err) goto cleanup; + if (mem) + i915_gem_object_init_memory_region(obj, mem, 0); + return obj; cleanup: @@ -579,10 +587,12 @@ err: return ERR_PTR(err); } -struct drm_i915_gem_object * -i915_gem_object_create_stolen(struct drm_i915_private *dev_priv, - resource_size_t size) +static struct drm_i915_gem_object * +_i915_gem_object_create_stolen(struct intel_memory_region *mem, + resource_size_t size, + unsigned int flags) { + struct drm_i915_private *dev_priv = mem->i915; struct drm_i915_gem_object *obj; struct drm_mm_node *stolen; int ret; @@ -603,7 +613,7 @@ i915_gem_object_create_stolen(struct drm_i915_private *dev_priv, goto err_free; } - obj = _i915_gem_object_create_stolen(dev_priv, stolen); + obj = __i915_gem_object_create_stolen(dev_priv, stolen, mem); if (IS_ERR(obj)) goto err_remove; @@ -617,6 +627,43 @@ err_free: } struct drm_i915_gem_object * +i915_gem_object_create_stolen(struct drm_i915_private *dev_priv, + resource_size_t size) +{ + return i915_gem_object_create_region(dev_priv->mm.regions[INTEL_REGION_STOLEN], + size, I915_BO_ALLOC_CONTIGUOUS); +} + +static int init_stolen(struct intel_memory_region *mem) +{ + /* + * Initialise stolen early so that we may reserve preallocated + * objects for the BIOS to KMS transition. + */ + return i915_gem_init_stolen(mem->i915); +} + +static void release_stolen(struct intel_memory_region *mem) +{ + i915_gem_cleanup_stolen(mem->i915); +} + +static const struct intel_memory_region_ops i915_region_stolen_ops = { + .init = init_stolen, + .release = release_stolen, + .create_object = _i915_gem_object_create_stolen, +}; + +struct intel_memory_region *i915_gem_stolen_setup(struct drm_i915_private *i915) +{ + return intel_memory_region_create(i915, + intel_graphics_stolen_res.start, + resource_size(&intel_graphics_stolen_res), + PAGE_SIZE, 0, + &i915_region_stolen_ops); +} + +struct drm_i915_gem_object * i915_gem_object_create_stolen_for_preallocated(struct drm_i915_private *dev_priv, resource_size_t stolen_offset, resource_size_t gtt_offset, @@ -655,7 +702,7 @@ i915_gem_object_create_stolen_for_preallocated(struct drm_i915_private *dev_priv return ERR_PTR(ret); } - obj = _i915_gem_object_create_stolen(dev_priv, stolen); + obj = __i915_gem_object_create_stolen(dev_priv, stolen, NULL); if (IS_ERR(obj)) { DRM_DEBUG_DRIVER("failed to allocate stolen object\n"); i915_gem_stolen_remove_node(dev_priv, stolen); diff --git a/drivers/gpu/drm/i915/gem/i915_gem_stolen.h b/drivers/gpu/drm/i915/gem/i915_gem_stolen.h index 2289644..c104062 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_stolen.h +++ b/drivers/gpu/drm/i915/gem/i915_gem_stolen.h @@ -21,8 +21,7 @@ int i915_gem_stolen_insert_node_in_range(struct drm_i915_private *dev_priv, u64 end); void i915_gem_stolen_remove_node(struct drm_i915_private *dev_priv, struct drm_mm_node *node); -int i915_gem_init_stolen(struct drm_i915_private *dev_priv); -void i915_gem_cleanup_stolen(struct drm_i915_private *dev_priv); +struct intel_memory_region *i915_gem_stolen_setup(struct drm_i915_private *i915); struct drm_i915_gem_object * i915_gem_object_create_stolen(struct drm_i915_private *dev_priv, resource_size_t size); diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index 263f1cea..0df0578 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -2748,8 +2748,6 @@ void i915_gem_cleanup_memory_regions(struct drm_i915_private *i915) { int i; - i915_gem_cleanup_stolen(i915); - for (i = 0; i < INTEL_REGION_UNKNOWN; i++) { struct intel_memory_region *region = i915->mm.regions[i]; @@ -2762,15 +2760,6 @@ int i915_gem_init_memory_regions(struct drm_i915_private *i915) { int err, i; - /* - * Initialise stolen early so that we may reserve preallocated - * objects for the BIOS to KMS transition. - */ - /* XXX: stolen will become a region at some point */ - err = i915_gem_init_stolen(i915); - if (err) - return err; - for (i = 0; i < INTEL_REGION_UNKNOWN; i++) { struct intel_memory_region *mem = ERR_PTR(-ENODEV); u32 type; @@ -2783,6 +2772,9 @@ int i915_gem_init_memory_regions(struct drm_i915_private *i915) case INTEL_MEMORY_SYSTEM: mem = i915_gem_shmem_setup(i915); break; + case INTEL_MEMORY_STOLEN: + mem = i915_gem_stolen_setup(i915); + break; } if (IS_ERR(mem)) { diff --git a/drivers/gpu/drm/i915/i915_pci.c b/drivers/gpu/drm/i915/i915_pci.c index e55ab27..f9a3bfe 100644 --- a/drivers/gpu/drm/i915/i915_pci.c +++ b/drivers/gpu/drm/i915/i915_pci.c @@ -152,7 +152,7 @@ .page_sizes = I915_GTT_PAGE_SIZE_4K #define GEN_DEFAULT_REGIONS \ - .memory_regions = REGION_SMEM + .memory_regions = REGION_SMEM | REGION_STOLEN #define I830_FEATURES \ GEN(2), \ -- 2.7.4