remove some now unused code

1 files changed, 0 insertions, 180 deletions

diff --git a/sys/dev/pci/drm/i915_gem_execbuffer.c b/sys/dev/pci/drm/i915_gem_execbuffer.c
index 791084db2e5..10175053cd7 100644
--- a/sys/dev/pci/drm/i915_gem_execbuffer.c
+++ b/sys/dev/pci/drm/i915_gem_execbuffer.c
@@ -56,196 +56,16 @@
 #include <sys/queue.h>
 #include <sys/workq.h>
 
-struct change_domains {
-	uint32_t invalidate_domains;
-	uint32_t flush_domains;
-	uint32_t flush_rings;
-	uint32_t flips;
-};
-
 int	i915_reset_gen7_sol_offsets(struct drm_device *,
 	    struct intel_ring_buffer *);
 int	i915_gem_execbuffer_wait_for_flips(struct intel_ring_buffer *, u32);
 int	i915_gem_execbuffer_move_to_gpu(struct intel_ring_buffer *,
 	    struct drm_obj **, int);
-void	i915_gem_object_set_to_gpu_domain(struct drm_i915_gem_object *,
-	    struct intel_ring_buffer *, struct change_domains *);
 void	i915_gem_execbuffer_move_to_active(struct drm_obj **, int,
 	    struct intel_ring_buffer *);
 void	i915_gem_execbuffer_retire_commands(struct drm_device *,
 	    struct drm_file *, struct intel_ring_buffer *);
 
-/*
- * Set the next domain for the specified object. This
- * may not actually perform the necessary flushing/invaliding though,
- * as that may want to be batched with other set_domain operations
- *
- * This is (we hope) the only really tricky part of gem. The goal
- * is fairly simple -- track which caches hold bits of the object
- * and make sure they remain coherent. A few concrete examples may
- * help to explain how it works. For shorthand, we use the notation
- * (read_domains, write_domain), e.g. (CPU, CPU) to indicate the
- * a pair of read and write domain masks.
- *
- * Case 1: the batch buffer
- *
- *	1. Allocated
- *	2. Written by CPU
- *	3. Mapped to GTT
- *	4. Read by GPU
- *	5. Unmapped from GTT
- *	6. Freed
- *
- *	Let's take these a step at a time
- *
- *	1. Allocated
- *		Pages allocated from the kernel may still have
- *		cache contents, so we set them to (CPU, CPU) always.
- *	2. Written by CPU (using pwrite)
- *		The pwrite function calls set_domain (CPU, CPU) and
- *		this function does nothing (as nothing changes)
- *	3. Mapped by GTT
- *		This function asserts that the object is not
- *		currently in any GPU-based read or write domains
- *	4. Read by GPU
- *		i915_gem_execbuffer calls set_domain (COMMAND, 0).
- *		As write_domain is zero, this function adds in the
- *		current read domains (CPU+COMMAND, 0).
- *		flush_domains is set to CPU.
- *		invalidate_domains is set to COMMAND
- *		clflush is run to get data out of the CPU caches
- *		then i915_dev_set_domain calls i915_gem_flush to
- *		emit an MI_FLUSH and drm_agp_chipset_flush
- *	5. Unmapped from GTT
- *		i915_gem_object_unbind calls set_domain (CPU, CPU)
- *		flush_domains and invalidate_domains end up both zero
- *		so no flushing/invalidating happens
- *	6. Freed
- *		yay, done
- *
- * Case 2: The shared render buffer
- *
- *	1. Allocated
- *	2. Mapped to GTT
- *	3. Read/written by GPU
- *	4. set_domain to (CPU,CPU)
- *	5. Read/written by CPU
- *	6. Read/written by GPU
- *
- *	1. Allocated
- *		Same as last example, (CPU, CPU)
- *	2. Mapped to GTT
- *		Nothing changes (assertions find that it is not in the GPU)
- *	3. Read/written by GPU
- *		execbuffer calls set_domain (RENDER, RENDER)
- *		flush_domains gets CPU
- *		invalidate_domains gets GPU
- *		clflush (obj)
- *		MI_FLUSH and drm_agp_chipset_flush
- *	4. set_domain (CPU, CPU)
- *		flush_domains gets GPU
- *		invalidate_domains gets CPU
- *		wait_rendering (obj) to make sure all drawing is complete.
- *		This will include an MI_FLUSH to get the data from GPU
- *		to memory
- *		clflush (obj) to invalidate the CPU cache
- *		Another MI_FLUSH in i915_gem_flush (eliminate this somehow?)
- *	5. Read/written by CPU
- *		cache lines are loaded and dirtied
- *	6. Read written by GPU
- *		Same as last GPU access
- *
- * Case 3: The constant buffer
- *
- *	1. Allocated
- *	2. Written by CPU
- *	3. Read by GPU
- *	4. Updated (written) by CPU again
- *	5. Read by GPU
- *
- *	1. Allocated
- *		(CPU, CPU)
- *	2. Written by CPU
- *		(CPU, CPU)
- *	3. Read by GPU
- *		(CPU+RENDER, 0)
- *		flush_domains = CPU
- *		invalidate_domains = RENDER
- *		clflush (obj)
- *		MI_FLUSH
- *		drm_agp_chipset_flush
- *	4. Updated (written) by CPU again
- *		(CPU, CPU)
- *		flush_domains = 0 (no previous write domain)
- *		invalidate_domains = 0 (no new read domains)
- *	5. Read by GPU
- *		(CPU+RENDER, 0)
- *		flush_domains = CPU
- *		invalidate_domains = RENDER
- *		clflush (obj)
- *		MI_FLUSH
- *		drm_agp_chipset_flush
- */
-void
-i915_gem_object_set_to_gpu_domain(struct drm_i915_gem_object *obj,
-				  struct intel_ring_buffer *ring,
-				  struct change_domains *cd)
-{
-	uint32_t invalidate_domains = 0, flush_domains = 0;
-
-	/*
-	 * If the object isn't moving to a new write domain,
-	 * let the object stay in multiple read domains
-	 */
-	if (obj->base.pending_write_domain == 0)
-		obj->base.pending_read_domains |= obj->base.read_domains;
-
-	/*
-	 * Flush the current write domain if
-	 * the new read domains don't match. Invalidate
-	 * any read domains which differ from the old
-	 * write domain
-	 */
-	if (obj->base.write_domain &&
-	    (((obj->base.write_domain != obj->base.pending_read_domains ||
-	       obj->ring != ring)) ||
-	     (obj->fenced_gpu_access && !obj->pending_fenced_gpu_access))) {
-		flush_domains |= obj->base.write_domain;
-		invalidate_domains |=
-			obj->base.pending_read_domains & ~obj->base.write_domain;
-	}
-	/*
-	 * Invalidate any read caches which may have
-	 * stale data. That is, any new read domains.
-	 */
-	invalidate_domains |= obj->base.pending_read_domains & ~obj->base.read_domains;
-	if ((flush_domains | invalidate_domains) & I915_GEM_DOMAIN_CPU)
-		i915_gem_clflush_object(obj);
-
-	if ((flush_domains | invalidate_domains) & I915_GEM_DOMAIN_GTT) {
-		inteldrm_wipe_mappings(&obj->base);
-	}
-
-	if (obj->base.pending_write_domain)
-		cd->flips |= atomic_read(&obj->pending_flip);
-
-	/* The actual obj->write_domain will be updated with
-	 * pending_write_domain after we emit the accumulated flush for all
-	 * of our domain changes in execbuffers (which clears objects'
-	 * write_domains).  So if we have a current write domain that we
-	 * aren't changing, set pending_write_domain to that.
-	 */
-	if (flush_domains == 0 && obj->base.pending_write_domain == 0)
-		obj->base.pending_write_domain = obj->base.write_domain;
-
-	cd->invalidate_domains |= invalidate_domains;
-	cd->flush_domains |= flush_domains;
-	if (flush_domains & I915_GEM_GPU_DOMAINS)
-		cd->flush_rings |= intel_ring_flag(obj->ring);
-	if (invalidate_domains & I915_GEM_GPU_DOMAINS)
-		cd->flush_rings |= intel_ring_flag(ring);
-}
-
 // struct eb_objects {
 // eb_create
 // eb_reset