From 631e86c5c4ad9b2cdd40749ea3b351204a362c80 Mon Sep 17 00:00:00 2001 From: Keith Packard Date: Tue, 6 May 2008 14:43:49 -0700 Subject: Start coding up memory domains --- shared-core/i915_drm.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) (limited to 'shared-core/i915_drm.h') diff --git a/shared-core/i915_drm.h b/shared-core/i915_drm.h index 0c64e866..302fc646 100644 --- a/shared-core/i915_drm.h +++ b/shared-core/i915_drm.h @@ -445,6 +445,28 @@ struct drm_i915_gem_relocation_entry { uint64_t presumed_offset; }; +/** + * Intel memory domains + * + * Most of these just align with the various caches in + * the system and are used to flush and invalidate as + * objects end up cached in different domains. + * + * STOLEN is a domain for the stolen memory portion of the + * address space; those pages are accessible only through the + * GTT and, hence, look a lot like VRAM on a discrete card. + * We'll allow programs to move objects into stolen memory + * mostly as a way to demonstrate the VRAM capabilities of this + * API + */ + +/* 0x00000001 is DRM_GEM_DOMAIN_CPU */ +#define DRM_GEM_DOMAIN_I915_RENDER 0x00000002 /* Render cache, used by 2D and 3D drawing */ +#define DRM_GEM_DOMAIN_I915_SAMPLER 0x00000004 /* Sampler cache, used by texture engine */ +#define DRM_GEM_DOMAIN_I915_COMMAND 0x00000008 /* Command queue, used to load batch buffers */ +#define DRM_GEM_DOMAIN_I915_INSTRUCTION 0x00000010 /* Instruction cache, used by shader programs */ +#define DRM_GEM_DOMAIN_I915_STOLEN 0x00000020 /* Stolen memory, needed by some objects */ + struct drm_i915_gem_validate_entry { /** * User's handle for a buffer to be bound into the GTT for this @@ -458,6 +480,11 @@ struct drm_i915_gem_validate_entry { /** Required alignment in graphics aperture */ uint64_t alignment; + + /** Memory domains used in this execbuffer run */ + uint32_t read_domains; + uint32_t write_domain; + /** * Returned value of the updated offset of the buffer, for future * presumed_offset writes. -- cgit v1.2.3