GEM: Make dri_emit_reloc take GEM domain flags instead of TTM flags.

The GEM flags are much more descriptive for what we need.  Since this makes
bufmgr_fake rather device-specific, move it to the intel common directory.
We've wanted to do device-specific stuff to it before.

3 files changed, 11 insertions, 1192 deletions

diff --git a/src/mesa/drivers/dri/common/dri_bufmgr.c b/src/mesa/drivers/dri/common/dri_bufmgr.c
index 69868b6665a..5967d7dafb3 100644
--- a/src/mesa/drivers/dri/common/dri_bufmgr.c
+++ b/src/mesa/drivers/dri/common/dri_bufmgr.c
@@ -121,10 +121,12 @@ dri_bufmgr_destroy(dri_bufmgr *bufmgr)
 }
 
 
-int dri_emit_reloc(dri_bo *reloc_buf, uint64_t flags, GLuint delta,
-		    GLuint offset, dri_bo *target_buf)
+int dri_emit_reloc(dri_bo *reloc_buf,
+		   uint32_t read_domains, uint32_t write_domain,
+		   uint32_t delta, uint32_t offset, dri_bo *target_buf)
 {
-   return reloc_buf->bufmgr->emit_reloc(reloc_buf, flags, delta, offset, target_buf);
+   return reloc_buf->bufmgr->emit_reloc(reloc_buf, read_domains, write_domain,
+					delta, offset, target_buf);
 }
 
 void *dri_process_relocs(dri_bo *batch_buf)
diff --git a/src/mesa/drivers/dri/common/dri_bufmgr.h b/src/mesa/drivers/dri/common/dri_bufmgr.h
index dffeb4c6019..99cfb2cd058 100644
--- a/src/mesa/drivers/dri/common/dri_bufmgr.h
+++ b/src/mesa/drivers/dri/common/dri_bufmgr.h
@@ -135,8 +135,9 @@ struct _dri_bufmgr {
     * \param target Buffer whose offset should be written into the relocation
     *	     entry.
     */
-   int (*emit_reloc)(dri_bo *reloc_buf, uint64_t flags, GLuint delta,
-		      GLuint offset, dri_bo *target);
+   int (*emit_reloc)(dri_bo *reloc_buf,
+		     uint32_t read_domains, uint32_t write_domain,
+		     uint32_t delta, uint32_t offset, dri_bo *target);
 
    /**
     * Processes the relocations, either in userland or by converting the list
@@ -174,22 +175,12 @@ void dri_bo_subdata(dri_bo *bo, unsigned long offset,
 void dri_bo_get_subdata(dri_bo *bo, unsigned long offset,
 			unsigned long size, void *data);
 
-void dri_bufmgr_fake_contended_lock_take(dri_bufmgr *bufmgr);
-dri_bufmgr *dri_bufmgr_fake_init(unsigned long low_offset, void *low_virtual,
-				 unsigned long size,
-				 unsigned int (*fence_emit)(void *private),
-				 int (*fence_wait)(void *private,
-						   unsigned int cookie),
-				 void *driver_priv);
 void dri_bufmgr_set_debug(dri_bufmgr *bufmgr, GLboolean enable_debug);
-void dri_bo_fake_disable_backing_store(dri_bo *bo,
-				       void (*invalidate_cb)(dri_bo *bo,
-							     void *ptr),
-				       void *ptr);
 void dri_bufmgr_destroy(dri_bufmgr *bufmgr);
 
-int dri_emit_reloc(dri_bo *reloc_buf, uint64_t flags, GLuint delta,
-		   GLuint offset, dri_bo *target_buf);
+int dri_emit_reloc(dri_bo *reloc_buf,
+		   uint32_t read_domains, uint32_t write_domain,
+		   uint32_t delta, uint32_t offset, dri_bo *target_buf);
 void *dri_process_relocs(dri_bo *batch_buf);
 void dri_post_process_relocs(dri_bo *batch_buf);
 void dri_post_submit(dri_bo *batch_buf);
diff --git a/src/mesa/drivers/dri/common/dri_bufmgr_fake.c b/src/mesa/drivers/dri/common/dri_bufmgr_fake.c
deleted file mode 100644
index fc52674839b..00000000000
--- a/src/mesa/drivers/dri/common/dri_bufmgr_fake.c
+++ /dev/null
@@ -1,1174 +0,0 @@
-/**************************************************************************
- * 
- * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
- * All Rights Reserved.
- * 
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sub license, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- * 
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- * 
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
- * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
- * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
- * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
- * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- * 
- **************************************************************************/
-
-/* Originally a fake version of the buffer manager so that we can
- * prototype the changes in a driver fairly quickly, has been fleshed
- * out to a fully functional interim solution.
- *
- * Basically wraps the old style memory management in the new
- * programming interface, but is more expressive and avoids many of
- * the bugs in the old texture manager.
- */
-#include "mtypes.h"
-#include "dri_bufmgr.h"
-#include "drm.h"
-
-#include "simple_list.h"
-#include "mm.h"
-#include "imports.h"
-
-#define DBG(...) do {					\
-   if (bufmgr_fake->bufmgr.debug)			\
-      _mesa_printf(__VA_ARGS__);			\
-} while (0)
-
-/* Internal flags:
- */
-#define BM_NO_BACKING_STORE			0x00000001
-#define BM_NO_FENCE_SUBDATA			0x00000002
-#define BM_PINNED				0x00000004
-
-/* Wrapper around mm.c's mem_block, which understands that you must
- * wait for fences to expire before memory can be freed.  This is
- * specific to our use of memcpy for uploads - an upload that was
- * processed through the command queue wouldn't need to care about
- * fences.
- */
-#define MAX_RELOCS 4096
-
-struct fake_buffer_reloc
-{
-   /** Buffer object that the relocation points at. */
-   dri_bo *target_buf;
-   /** Offset of the relocation entry within reloc_buf. */
-   GLuint offset;
-   /** Cached value of the offset when we last performed this relocation. */
-   GLuint last_target_offset;
-   /** Value added to target_buf's offset to get the relocation entry. */
-   GLuint delta;
-   /** Flags to validate the target buffer under. */
-   uint64_t validate_flags;
-};
-
-struct block {
-   struct block *next, *prev;
-   struct mem_block *mem;	/* BM_MEM_AGP */
-
-   /**
-    * Marks that the block is currently in the aperture and has yet to be
-    * fenced.
-    */
-   unsigned on_hardware:1;
-   /**
-    * Marks that the block is currently fenced (being used by rendering) and
-    * can't be freed until @fence is passed.
-    */
-   unsigned fenced:1;
-
-   /** Fence cookie for the block. */
-   unsigned fence; /* Split to read_fence, write_fence */
-
-   dri_bo *bo;
-   void *virtual;
-};
-
-typedef struct _bufmgr_fake {
-   dri_bufmgr bufmgr;
-
-   unsigned long low_offset;
-   unsigned long size;
-   void *virtual;
-
-   struct mem_block *heap;
-   struct block lru;		/* only allocated, non-fence-pending blocks here */
-
-   unsigned buf_nr;		/* for generating ids */
-
-   struct block on_hardware;	/* after bmValidateBuffers */
-   struct block fenced;		/* after bmFenceBuffers (mi_flush, emit irq, write dword) */
-                                /* then to bufmgr->lru or free() */
-
-   unsigned int last_fence;
-
-   unsigned fail:1;
-   unsigned need_fence:1;
-   GLboolean thrashing;
-
-   /**
-    * Driver callback to emit a fence, returning the cookie.
-    *
-    * Currently, this also requires that a write flush be emitted before
-    * emitting the fence, but this should change.
-    */
-   unsigned int (*fence_emit)(void *private);
-   /** Driver callback to wait for a fence cookie to have passed. */
-   int (*fence_wait)(void *private, unsigned int fence_cookie);
-   /** Driver-supplied argument to driver callbacks */
-   void *driver_priv;
-
-   GLboolean debug;
-
-   GLboolean performed_rendering;
-
-   /* keep track of the current total size of objects we have relocs for */
-   unsigned long current_total_size;
-} dri_bufmgr_fake;
-
-typedef struct _dri_bo_fake {
-   dri_bo bo;
-
-   unsigned id;			/* debug only */
-   const char *name;
-
-   unsigned dirty:1;
-   unsigned size_accounted:1; /*this buffers size has been accounted against the aperture */
-   unsigned card_dirty:1; /* has the card written to this buffer - we make need to copy it back */
-   unsigned int refcount;
-   /* Flags may consist of any of the DRM_BO flags, plus
-    * DRM_BO_NO_BACKING_STORE and BM_NO_FENCE_SUBDATA, which are the first two
-    * driver private flags.
-    */
-   uint64_t flags;
-   unsigned int alignment;
-   GLboolean is_static, validated;
-   unsigned int map_count;
-
-   /* Flags for the buffer to be validated with in command submission */
-   uint64_t validate_flags;
-
-   /** relocation list */
-   struct fake_buffer_reloc *relocs;
-   GLuint nr_relocs;
-
-   struct block *block;
-   void *backing_store;
-   void (*invalidate_cb)(dri_bo *bo, void *ptr);
-   void *invalidate_ptr;
-} dri_bo_fake;
-
-static int clear_fenced(dri_bufmgr_fake *bufmgr_fake,
-			unsigned int fence_cookie);
-
-static int dri_fake_check_aperture_space(dri_bo *bo);
-
-#define MAXFENCE 0x7fffffff
-
-static GLboolean FENCE_LTE( unsigned a, unsigned b )
-{
-   if (a == b)
-      return GL_TRUE;
-
-   if (a < b && b - a < (1<<24))
-      return GL_TRUE;
-
-   if (a > b && MAXFENCE - a + b < (1<<24))
-      return GL_TRUE;
-
-   return GL_FALSE;
-}
-
-static unsigned int
-_fence_emit_internal(dri_bufmgr_fake *bufmgr_fake)
-{
-   bufmgr_fake->last_fence = bufmgr_fake->fence_emit(bufmgr_fake->driver_priv);
-   return bufmgr_fake->last_fence;
-}
-
-static void
-_fence_wait_internal(dri_bufmgr_fake *bufmgr_fake, unsigned int cookie)
-{
-   int ret;
-
-   ret = bufmgr_fake->fence_wait(bufmgr_fake->driver_priv, cookie);
-   if (ret != 0) {
-      _mesa_printf("%s:%d: Error %d waiting for fence.\n",
-		   __FILE__, __LINE__);
-      abort();
-   }
-   clear_fenced(bufmgr_fake, cookie);
-}
-
-static GLboolean
-_fence_test(dri_bufmgr_fake *bufmgr_fake, unsigned fence)
-{
-   /* Slight problem with wrap-around:
-    */
-   return fence == 0 || FENCE_LTE(fence, bufmgr_fake->last_fence);
-}
-
-/**
- * Allocate a memory manager block for the buffer.
- */
-static GLboolean
-alloc_block(dri_bo *bo)
-{
-   dri_bo_fake *bo_fake = (dri_bo_fake *)bo;
-   dri_bufmgr_fake *bufmgr_fake= (dri_bufmgr_fake *)bo->bufmgr;
-   struct block *block = (struct block *)calloc(sizeof *block, 1);
-   unsigned int align_log2 = _mesa_ffs(bo_fake->alignment) - 1;
-   GLuint sz;
-
-   if (!block)
-      return GL_FALSE;
-
-   sz = (bo->size + bo_fake->alignment - 1) & ~(bo_fake->alignment - 1);
-
-   block->mem = mmAllocMem(bufmgr_fake->heap, sz, align_log2, 0);
-   if (!block->mem) {
-      free(block);
-      return GL_FALSE;
-   }
-
-   make_empty_list(block);
-
-   /* Insert at head or at tail???   
-    */
-   insert_at_tail(&bufmgr_fake->lru, block);
-
-   block->virtual = bufmgr_fake->virtual +
-      block->mem->ofs - bufmgr_fake->low_offset;
-   block->bo = bo;
-
-   bo_fake->block = block;
-
-   return GL_TRUE;
-}
-
-/* Release the card storage associated with buf:
- */
-static void free_block(dri_bufmgr_fake *bufmgr_fake, struct block *block)
-{
-   dri_bo_fake *bo_fake;
-   DBG("free block %p %08x %d %d\n", block, block->mem->ofs, block->on_hardware, block->fenced);
-
-   if (!block)
-      return;
-
-   bo_fake = (dri_bo_fake *)block->bo;
-   if (!(bo_fake->flags & BM_NO_BACKING_STORE) && (bo_fake->card_dirty == 1)) {
-     memcpy(bo_fake->backing_store, block->virtual, block->bo->size);
-     bo_fake->card_dirty = 1;
-     bo_fake->dirty = 1;
-   }
-
-   if (block->on_hardware) {
-      block->bo = NULL;
-   }
-   else if (block->fenced) {
-      block->bo = NULL;
-   }
-   else {
-      DBG("    - free immediately\n");
-      remove_from_list(block);
-
-      mmFreeMem(block->mem);
-      free(block);
-   }
-}
-
-static void
-alloc_backing_store(dri_bo *bo)
-{
-   dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bo->bufmgr;
-   dri_bo_fake *bo_fake = (dri_bo_fake *)bo;
-   assert(!bo_fake->backing_store);
-   assert(!(bo_fake->flags & (BM_PINNED|BM_NO_BACKING_STORE)));
-
-   bo_fake->backing_store = ALIGN_MALLOC(bo->size, 64);
-
-   DBG("alloc_backing - buf %d %p %d\n", bo_fake->id, bo_fake->backing_store, bo->size);
-   assert(bo_fake->backing_store);
-}
-
-static void
-free_backing_store(dri_bo *bo)
-{
-   dri_bo_fake *bo_fake = (dri_bo_fake *)bo;
-
-   if (bo_fake->backing_store) {
-      assert(!(bo_fake->flags & (BM_PINNED|BM_NO_BACKING_STORE)));
-      ALIGN_FREE(bo_fake->backing_store);
-      bo_fake->backing_store = NULL;
-   }
-}
-
-static void
-set_dirty(dri_bo *bo)
-{
-   dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bo->bufmgr;
-   dri_bo_fake *bo_fake = (dri_bo_fake *)bo;
-
-   if (bo_fake->flags & BM_NO_BACKING_STORE && bo_fake->invalidate_cb != NULL)
-      bo_fake->invalidate_cb(bo, bo_fake->invalidate_ptr);
-
-   assert(!(bo_fake->flags & BM_PINNED));
-
-   DBG("set_dirty - buf %d\n", bo_fake->id);
-   bo_fake->dirty = 1;
-}
-
-static GLboolean
-evict_lru(dri_bufmgr_fake *bufmgr_fake, GLuint max_fence)
-{
-   struct block *block, *tmp;
-
-   DBG("%s\n", __FUNCTION__);
-
-   foreach_s(block, tmp, &bufmgr_fake->lru) {
-      dri_bo_fake *bo_fake = (dri_bo_fake *)block->bo;
-
-      if (bo_fake != NULL && (bo_fake->flags & BM_NO_FENCE_SUBDATA))
-	 continue;
-
-      if (block->fence && max_fence && !FENCE_LTE(block->fence, max_fence))
-	 return 0;
-
-      set_dirty(&bo_fake->bo);
-      bo_fake->block = NULL;
-
-      free_block(bufmgr_fake, block);
-      return GL_TRUE;
-   }
-
-   return GL_FALSE;
-}
-
-#define foreach_s_rev(ptr, t, list)   \
-        for(ptr=(list)->prev,t=(ptr)->prev; list != ptr; ptr=t, t=(t)->prev)
-
-static GLboolean
-evict_mru(dri_bufmgr_fake *bufmgr_fake)
-{
-   struct block *block, *tmp;
-
-   DBG("%s\n", __FUNCTION__);
-
-   foreach_s_rev(block, tmp, &bufmgr_fake->lru) {
-      dri_bo_fake *bo_fake = (dri_bo_fake *)block->bo;
-
-      if (bo_fake && (bo_fake->flags & BM_NO_FENCE_SUBDATA))
-	 continue;
-
-      set_dirty(&bo_fake->bo);
-      bo_fake->block = NULL;
-
-      free_block(bufmgr_fake, block);
-      return GL_TRUE;
-   }
-
-   return GL_FALSE;
-}
-
-/**
- * Removes all objects from the fenced list older than the given fence.
- */
-static int clear_fenced(dri_bufmgr_fake *bufmgr_fake,
-			unsigned int fence_cookie)
-{
-   struct block *block, *tmp;
-   int ret = 0;
-
-   foreach_s(block, tmp, &bufmgr_fake->fenced) {
-      assert(block->fenced);
-
-      if (_fence_test(bufmgr_fake, block->fence)) {
-
-	 block->fenced = 0;
-
-	 if (!block->bo) {
-	    DBG("delayed free: offset %x sz %x\n",
-		block->mem->ofs, block->mem->size);
-	    remove_from_list(block);
-	    mmFreeMem(block->mem);
-	    free(block);
-	 }
-	 else {
-	    DBG("return to lru: offset %x sz %x\n",
-		block->mem->ofs, block->mem->size);
-	    move_to_tail(&bufmgr_fake->lru, block);
-	 }
-
-	 ret = 1;
-      }
-      else {
-	 /* Blocks are ordered by fence, so if one fails, all from
-	  * here will fail also:
-	  */
-	DBG("fence not passed: offset %x sz %x %d %d \n",
-	    block->mem->ofs, block->mem->size, block->fence, bufmgr_fake->last_fence);
-	 break;
-      }
-   }
-
-   DBG("%s: %d\n", __FUNCTION__, ret);
-   return ret;
-}
-
-static void fence_blocks(dri_bufmgr_fake *bufmgr_fake, unsigned fence)
-{
-   struct block *block, *tmp;
-
-   foreach_s (block, tmp, &bufmgr_fake->on_hardware) {
-      DBG("Fence block %p (sz 0x%x ofs %x buf %p) with fence %d\n", block,
-	  block->mem->size, block->mem->ofs, block->bo, fence);
-      block->fence = fence;
-
-      block->on_hardware = 0;
-      block->fenced = 1;
-
-      /* Move to tail of pending list here
-       */
-      move_to_tail(&bufmgr_fake->fenced, block);
-   }
-
-   assert(is_empty_list(&bufmgr_fake->on_hardware));
-}
-
-static GLboolean evict_and_alloc_block(dri_bo *bo)
-{
-   dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bo->bufmgr;
-   dri_bo_fake *bo_fake = (dri_bo_fake *)bo;
-
-   assert(bo_fake->block == NULL);
-
-   /* Search for already free memory:
-    */
-   if (alloc_block(bo))
-      return GL_TRUE;
-
-   /* If we're not thrashing, allow lru eviction to dig deeper into
-    * recently used textures.  We'll probably be thrashing soon:
-    */
-   if (!bufmgr_fake->thrashing) {
-      while (evict_lru(bufmgr_fake, 0))
-	 if (alloc_block(bo))
-	    return GL_TRUE;
-   }
-
-   /* Keep thrashing counter alive?
-    */
-   if (bufmgr_fake->thrashing)
-      bufmgr_fake->thrashing = 20;
-
-   /* Wait on any already pending fences - here we are waiting for any
-    * freed memory that has been submitted to hardware and fenced to
-    * become available:
-    */
-   while (!is_empty_list(&bufmgr_fake->fenced)) {
-      GLuint fence = bufmgr_fake->fenced.next->fence;
-      _fence_wait_internal(bufmgr_fake, fence);
-
-      if (alloc_block(bo))
-	 return GL_TRUE;
-   }
-
-   if (!is_empty_list(&bufmgr_fake->on_hardware)) {
-      while (!is_empty_list(&bufmgr_fake->fenced)) {
-	 GLuint fence = bufmgr_fake->fenced.next->fence;
-	 _fence_wait_internal(bufmgr_fake, fence);
-      }
-
-      if (!bufmgr_fake->thrashing) {
-	 DBG("thrashing\n");
-      }
-      bufmgr_fake->thrashing = 20;
-
-      if (alloc_block(bo))
-	 return GL_TRUE;
-   }
-
-   while (evict_mru(bufmgr_fake))
-      if (alloc_block(bo))
-	 return GL_TRUE;
-
-   DBG("%s 0x%x bytes failed\n", __FUNCTION__, bo->size);
-
-   return GL_FALSE;
-}
-
-/***********************************************************************
- * Public functions
- */
-
-/**
- * Wait for hardware idle by emitting a fence and waiting for it.
- */
-static void
-dri_bufmgr_fake_wait_idle(dri_bufmgr_fake *bufmgr_fake)
-{
-   unsigned int cookie;
-
-   cookie = bufmgr_fake->fence_emit(bufmgr_fake->driver_priv);
-   _fence_wait_internal(bufmgr_fake, cookie);
-}
-
-/**
- * Wait for execution pending on a buffer
- */
-static void
-dri_bufmgr_fake_bo_wait_idle(dri_bo *bo)
-{
-   dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bo->bufmgr;
-   dri_bo_fake *bo_fake = (dri_bo_fake *)bo;
-
-   if (bo_fake->block == NULL || !bo_fake->block->fenced)
-      return;
-
-   _fence_wait_internal(bufmgr_fake, bo_fake->block->fence);
-}
-
-/* Specifically ignore texture memory sharing.
- *  -- just evict everything
- *  -- and wait for idle
- */
-void
-dri_bufmgr_fake_contended_lock_take(dri_bufmgr *bufmgr)
-{
-   dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bufmgr;
-   struct block *block, *tmp;
-
-   bufmgr_fake->need_fence = 1;
-   bufmgr_fake->fail = 0;
-
-   /* Wait for hardware idle.  We don't know where acceleration has been
-    * happening, so we'll need to wait anyway before letting anything get
-    * put on the card again.
-    */
-   dri_bufmgr_fake_wait_idle(bufmgr_fake);
-
-   /* Check that we hadn't released the lock without having fenced the last
-    * set of buffers.
-    */
-   assert(is_empty_list(&bufmgr_fake->fenced));
-   assert(is_empty_list(&bufmgr_fake->on_hardware));
-
-   foreach_s(block, tmp, &bufmgr_fake->lru) {
-      assert(_fence_test(bufmgr_fake, block->fence));
-      set_dirty(block->bo);
-   }
-}
-
-static dri_bo *
-dri_fake_bo_alloc(dri_bufmgr *bufmgr, const char *name,
-		  unsigned long size, unsigned int alignment,
-		  uint64_t location_mask)
-{
-   dri_bufmgr_fake *bufmgr_fake;
-   dri_bo_fake *bo_fake;
-
-   bufmgr_fake = (dri_bufmgr_fake *)bufmgr;
-
-   assert(size != 0);
-
-   bo_fake = calloc(1, sizeof(*bo_fake));
-   if (!bo_fake)
-      return NULL;
-
-   bo_fake->bo.size = size;
-   bo_fake->bo.offset = -1;
-   bo_fake->bo.virtual = NULL;
-   bo_fake->bo.bufmgr = bufmgr;
-   bo_fake->refcount = 1;
-
-   /* Alignment must be a power of two */
-   assert((alignment & (alignment - 1)) == 0);
-   if (alignment == 0)
-      alignment = 1;
-   bo_fake->alignment = alignment;
-   bo_fake->id = ++bufmgr_fake->buf_nr;
-   bo_fake->name = name;
-   bo_fake->flags = 0;
-   bo_fake->is_static = GL_FALSE;
-
-   DBG("drm_bo_alloc: (buf %d: %s, %d kb)\n", bo_fake->id, bo_fake->name,
-       bo_fake->bo.size / 1024);
-
-   return &bo_fake->bo;
-}
-
-static dri_bo *
-dri_fake_bo_alloc_static(dri_bufmgr *bufmgr, const char *name,
-			 unsigned long offset, unsigned long size,
-			 void *virtual, uint64_t location_mask)
-{
-   dri_bufmgr_fake *bufmgr_fake;
-   dri_bo_fake *bo_fake;
-
-   bufmgr_fake = (dri_bufmgr_fake *)bufmgr;
-
-   assert(size != 0);
-
-   bo_fake = calloc(1, sizeof(*bo_fake));
-   if (!bo_fake)
-      return NULL;
-
-   bo_fake->bo.size = size;
-   bo_fake->bo.offset = offset;
-   bo_fake->bo.virtual = virtual;
-   bo_fake->bo.bufmgr = bufmgr;
-   bo_fake->refcount = 1;
-   bo_fake->id = ++bufmgr_fake->buf_nr;
-   bo_fake->name = name;
-   bo_fake->flags = BM_PINNED | DRM_BO_FLAG_NO_MOVE;
-   bo_fake->is_static = GL_TRUE;
-
-   DBG("drm_bo_alloc_static: (buf %d: %s, %d kb)\n", bo_fake->id, bo_fake->name,
-       bo_fake->bo.size / 1024);
-
-   return &bo_fake->bo;
-}
-
-static void
-dri_fake_bo_reference(dri_bo *bo)
-{
-   dri_bo_fake *bo_fake = (dri_bo_fake *)bo;
-
-   bo_fake->refcount++;
-}
-
-static void
-dri_fake_bo_unreference(dri_bo *bo)
-{
-   dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bo->bufmgr;
-   dri_bo_fake *bo_fake = (dri_bo_fake *)bo;
-   int i;
-
-   if (!bo)
-      return;
-
-   if (--bo_fake->refcount == 0) {
-      assert(bo_fake->map_count == 0);
-      /* No remaining references, so free it */
-      if (bo_fake->block)
-	 free_block(bufmgr_fake, bo_fake->block);
-      free_backing_store(bo);
-
-      for (i = 0; i < bo_fake->nr_relocs; i++)
-	 dri_bo_unreference(bo_fake->relocs[i].target_buf);
-
-      DBG("drm_bo_unreference: free buf %d %s\n", bo_fake->id, bo_fake->name);
-
-      free(bo_fake->relocs);
-      free(bo);
-
-      return;
-   }
-}
-
-/**
- * Set the buffer as not requiring backing store, and instead get the callback
- * invoked whenever it would be set dirty.
- */
-void dri_bo_fake_disable_backing_store(dri_bo *bo,
-				       void (*invalidate_cb)(dri_bo *bo,
-							     void *ptr),
-				       void *ptr)
-{
-   dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bo->bufmgr;
-   dri_bo_fake *bo_fake = (dri_bo_fake *)bo;
-
-   if (bo_fake->backing_store)
-      free_backing_store(bo);
-
-   bo_fake->flags |= BM_NO_BACKING_STORE;
-
-   DBG("disable_backing_store set buf %d dirty\n", bo_fake->id);
-   bo_fake->dirty = 1;
-   bo_fake->invalidate_cb = invalidate_cb;
-   bo_fake->invalidate_ptr = ptr;
-
-   /* Note that it is invalid right from the start.  Also note
-    * invalidate_cb is called with the bufmgr locked, so cannot
-    * itself make bufmgr calls.
-    */
-   if (invalidate_cb != NULL)
-      invalidate_cb(bo, ptr);
-}
-
-/**
- * Map a buffer into bo->virtual, allocating either card memory space (If
- * BM_NO_BACKING_STORE or BM_PINNED) or backing store, as necessary.
- */
-static int
-dri_fake_bo_map(dri_bo *bo, GLboolean write_enable)
-{
-   dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bo->bufmgr;
-   dri_bo_fake *bo_fake = (dri_bo_fake *)bo;
-
-   /* Static buffers are always mapped. */
-   if (bo_fake->is_static)
-      return 0;
-
-   /* Allow recursive mapping.  Mesa may recursively map buffers with
-    * nested display loops, and it is used internally in bufmgr_fake
-    * for relocation.
-    */
-   if (bo_fake->map_count++ != 0)
-      return 0;
-
-   {
-      DBG("drm_bo_map: (buf %d: %s, %d kb)\n", bo_fake->id, bo_fake->name,
-	  bo_fake->bo.size / 1024);
-
-      if (bo->virtual != NULL) {
-	 _mesa_printf("%s: already mapped\n", __FUNCTION__);
-	 abort();
-      }
-      else if (bo_fake->flags & (BM_NO_BACKING_STORE|BM_PINNED)) {
-
-	 if (!bo_fake->block && !evict_and_alloc_block(bo)) {
-	    DBG("%s: alloc failed\n", __FUNCTION__);
-	    bufmgr_fake->fail = 1;
-	    return 1;
-	 }
-	 else {
-	    assert(bo_fake->block);
-	    bo_fake->dirty = 0;
-
-	    if (!(bo_fake->flags & BM_NO_FENCE_SUBDATA) &&
-		bo_fake->block->fenced) {
-	       dri_bufmgr_fake_bo_wait_idle(bo);
-	    }
-
-	    bo->virtual = bo_fake->block->virtual;
-	 }
-      }
-      else {
-	 if (write_enable)
-	    set_dirty(bo);
-
-	 if (bo_fake->backing_store == 0)
-	    alloc_backing_store(bo);
-
-	 bo->virtual = bo_fake->backing_store;
-      }
-   }
-
-   return 0;
-}
-
-static int
-dri_fake_bo_unmap(dri_bo *bo)
-{
-   dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bo->bufmgr;
-   dri_bo_fake *bo_fake = (dri_bo_fake *)bo;
-
-   /* Static buffers are always mapped. */
-   if (bo_fake->is_static)
-      return 0;
-
-   assert(bo_fake->map_count != 0);
-   if (--bo_fake->map_count != 0)
-      return 0;
-
-   DBG("drm_bo_unmap: (buf %d: %s, %d kb)\n", bo_fake->id, bo_fake->name,
-       bo_fake->bo.size / 1024);
-
-   bo->virtual = NULL;
-
-   return 0;
-}
-
-static void
-dri_fake_kick_all(dri_bufmgr_fake *bufmgr_fake)
-{
-   struct block *block, *tmp;
-
-   bufmgr_fake->performed_rendering = GL_FALSE;
-   /* okay for ever BO that is on the HW kick it off.
-      seriously not afraid of the POLICE right now */
-   foreach_s(block, tmp, &bufmgr_fake->on_hardware) {
-      dri_bo_fake *bo_fake = (dri_bo_fake *)block->bo;
-
-      block->on_hardware = 0;
-      free_block(bufmgr_fake, block);
-      bo_fake->block = NULL;
-      bo_fake->validated = GL_FALSE;
-      if (!(bo_fake->flags & BM_NO_BACKING_STORE))
-         bo_fake->dirty = 1;
-   }
-}
-
-static int
-dri_fake_bo_validate(dri_bo *bo, uint64_t flags)
-{
-   dri_bufmgr_fake *bufmgr_fake;
-   dri_bo_fake *bo_fake = (dri_bo_fake *)bo;
-
-   /* XXX: Sanity-check whether we've already validated this one under
-    * different flags.  See drmAddValidateItem().
-    */
-   bufmgr_fake = (dri_bufmgr_fake *)bo->bufmgr;
-
-   DBG("drm_bo_validate: (buf %d: %s, %d kb)\n", bo_fake->id, bo_fake->name,
-       bo_fake->bo.size / 1024);
-
-   /* Sanity check: Buffers should be unmapped before being validated.
-    * This is not so much of a problem for bufmgr_fake, but TTM refuses,
-    * and the problem is harder to debug there.
-    */
-   assert(bo_fake->map_count == 0);
-
-   if (bo_fake->is_static) {
-      /* Add it to the needs-fence list */
-      bufmgr_fake->need_fence = 1;
-      return 0;
-   }
-
-   /* reset size accounted */
-   bo_fake->size_accounted = 0;
-
-   /* Allocate the card memory */
-   if (!bo_fake->block && !evict_and_alloc_block(bo)) {
-      bufmgr_fake->fail = 1;
-      DBG("Failed to validate buf %d:%s\n", bo_fake->id, bo_fake->name);
-      return -1;
-   }
-
-   assert(bo_fake->block);
-   assert(bo_fake->block->bo == &bo_fake->bo);
-
-   bo->offset = bo_fake->block->mem->ofs;
-
-   /* Upload the buffer contents if necessary */
-   if (bo_fake->dirty) {
-      DBG("Upload dirty buf %d:%s, sz %d offset 0x%x\n", bo_fake->id,
-	  bo_fake->name, bo->size, bo_fake->block->mem->ofs);
-
-      assert(!(bo_fake->flags &
-	       (BM_NO_BACKING_STORE|BM_PINNED)));
-
-      /* Actually, should be able to just wait for a fence on the memory,
-       * which we would be tracking when we free it.  Waiting for idle is
-       * a sufficiently large hammer for now.
-       */
-      dri_bufmgr_fake_wait_idle(bufmgr_fake);
-
-      /* we may never have mapped this BO so it might not have any backing
-       * store if this happens it should be rare, but 0 the card memory
-       * in any case */
-      if (bo_fake->backing_store)
-         memcpy(bo_fake->block->virtual, bo_fake->backing_store, bo->size);
-      else
-         memset(bo_fake->block->virtual, 0, bo->size);
-
-      bo_fake->dirty = 0;
-   }
-
-   bo_fake->block->fenced = 0;
-   bo_fake->block->on_hardware = 1;
-   move_to_tail(&bufmgr_fake->on_hardware, bo_fake->block);
-
-   bo_fake->validated = GL_TRUE;
-   bufmgr_fake->need_fence = 1;
-
-   return 0;
-}
-
-static void
-dri_fake_fence_validated(dri_bufmgr *bufmgr)
-{
-   dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bufmgr;
-   unsigned int cookie;
-
-   cookie = _fence_emit_internal(bufmgr_fake);
-   fence_blocks(bufmgr_fake, cookie);
-
-   DBG("drm_fence_validated: 0x%08x cookie\n", cookie);
-}
-
-static void
-dri_fake_destroy(dri_bufmgr *bufmgr)
-{
-   dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bufmgr;
-
-   mmDestroy(bufmgr_fake->heap);
-   free(bufmgr);
-}
-
-static int
-dri_fake_emit_reloc(dri_bo *reloc_buf, uint64_t flags, GLuint delta,
-		    GLuint offset, dri_bo *target_buf)
-{
-   dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)reloc_buf->bufmgr;
-   struct fake_buffer_reloc *r;
-   dri_bo_fake *reloc_fake = (dri_bo_fake *)reloc_buf;
-   dri_bo_fake *target_fake = (dri_bo_fake *)target_buf;
-   int i;
-
-   assert(reloc_buf);
-   assert(target_buf);
-
-   assert(target_fake->is_static || target_fake->size_accounted);
-
-   if (reloc_fake->relocs == NULL) {
-      reloc_fake->relocs = malloc(sizeof(struct fake_buffer_reloc) *
-				  MAX_RELOCS);
-   }
-
-   r = &reloc_fake->relocs[reloc_fake->nr_relocs++];
-
-   assert(reloc_fake->nr_relocs <= MAX_RELOCS);
-
-   dri_bo_reference(target_buf);
-
-   r->target_buf = target_buf;
-   r->offset = offset;
-   r->last_target_offset = target_buf->offset;
-   r->delta = delta;
-   r->validate_flags = flags;
-
-   if (bufmgr_fake->debug) {
-      /* Check that a conflicting relocation hasn't already been emitted. */
-      for (i = 0; i < reloc_fake->nr_relocs - 1; i++) {
-	 struct fake_buffer_reloc *r2 = &reloc_fake->relocs[i];
-
-	 assert(r->offset != r2->offset);
-      }
-   }
-
-   return 0;
-}
-
-/**
- * Incorporates the validation flags associated with each relocation into
- * the combined validation flags for the buffer on this batchbuffer submission.
- */
-static void
-dri_fake_calculate_validate_flags(dri_bo *bo)
-{
-   dri_bo_fake *bo_fake = (dri_bo_fake *)bo;
-   int i;
-
-   for (i = 0; i < bo_fake->nr_relocs; i++) {
-      struct fake_buffer_reloc *r = &bo_fake->relocs[i];
-      dri_bo_fake *target_fake = (dri_bo_fake *)r->target_buf;
-
-      /* Do the same for the tree of buffers we depend on */
-      dri_fake_calculate_validate_flags(r->target_buf);
-
-      if (target_fake->validate_flags == 0) {
-	 target_fake->validate_flags = r->validate_flags;
-      } else {
-	 /* Mask the memory location to the intersection of all the memory
-	  * locations the buffer is being validated to.
-	  */
-	 target_fake->validate_flags =
-	    (target_fake->validate_flags & ~DRM_BO_MASK_MEM) |
-	    (r->validate_flags & target_fake->validate_flags &
-	     DRM_BO_MASK_MEM);
-	 /* All the other flags just accumulate. */
-	 target_fake->validate_flags |= r->validate_flags & ~DRM_BO_MASK_MEM;
-      }
-   }
-}
-
-
-static int
-dri_fake_reloc_and_validate_buffer(dri_bo *bo)
-{
-   dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bo->bufmgr;
-   dri_bo_fake *bo_fake = (dri_bo_fake *)bo;
-   int i, ret;
-
-   assert(bo_fake->map_count == 0);
-
-   for (i = 0; i < bo_fake->nr_relocs; i++) {
-      struct fake_buffer_reloc *r = &bo_fake->relocs[i];
-      dri_bo_fake *target_fake = (dri_bo_fake *)r->target_buf;
-      uint32_t reloc_data;
-
-      /* Validate the target buffer if that hasn't been done. */
-      if (!target_fake->validated) {
-         ret = dri_fake_reloc_and_validate_buffer(r->target_buf);
-         if (ret != 0) {
-            if (bo->virtual != NULL)
-                dri_bo_unmap(bo);
-            return ret;
-         }
-      }
-
-      /* Calculate the value of the relocation entry. */
-      if (r->target_buf->offset != r->last_target_offset) {
-	 reloc_data = r->target_buf->offset + r->delta;
-
-	 if (bo->virtual == NULL)
-	    dri_bo_map(bo, GL_TRUE);
-
-	 *(uint32_t *)(bo->virtual + r->offset) = reloc_data;
-
-	 r->last_target_offset = r->target_buf->offset;
-      }
-   }
-
-   if (bo->virtual != NULL)
-      dri_bo_unmap(bo);
-
-   if (bo_fake->validate_flags & DRM_BO_FLAG_WRITE) {
-      if (!(bo_fake->flags & (BM_NO_BACKING_STORE|BM_PINNED))) {
-         if (bo_fake->backing_store == 0)
-            alloc_backing_store(bo);
-
-         bo_fake->card_dirty = 1;
-      }
-      bufmgr_fake->performed_rendering = GL_TRUE;
-   }
-
-   return dri_fake_bo_validate(bo, bo_fake->validate_flags);
-}
-
-static void *
-dri_fake_process_relocs(dri_bo *batch_buf)
-{
-   dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)batch_buf->bufmgr;
-   dri_bo_fake *batch_fake = (dri_bo_fake *)batch_buf;
-   int ret;
-   int retry_count = 0;
-
-   bufmgr_fake->performed_rendering = GL_FALSE;
-
-   dri_fake_calculate_validate_flags(batch_buf);
-
-   batch_fake->validate_flags = DRM_BO_FLAG_MEM_TT | DRM_BO_FLAG_READ;
-
-   /* we've ran out of RAM so blow the whole lot away and retry */
- restart:
-   ret = dri_fake_reloc_and_validate_buffer(batch_buf);
-   if (bufmgr_fake->fail == 1) {
-      if (retry_count == 0) {
-         retry_count++;
-         dri_fake_kick_all(bufmgr_fake);
-         bufmgr_fake->fail = 0;
-         goto restart;
-      } else /* dump out the memory here */
-         mmDumpMemInfo(bufmgr_fake->heap);
-   }
-
-   assert(ret == 0);
-
-   bufmgr_fake->current_total_size = 0;
-   return NULL;
-}
-
-static void
-dri_bo_fake_post_submit(dri_bo *bo)
-{
-   dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bo->bufmgr;
-   dri_bo_fake *bo_fake = (dri_bo_fake *)bo;
-   int i;
-
-   for (i = 0; i < bo_fake->nr_relocs; i++) {
-      struct fake_buffer_reloc *r = &bo_fake->relocs[i];
-      dri_bo_fake *target_fake = (dri_bo_fake *)r->target_buf;
-
-      if (target_fake->validated)
-	 dri_bo_fake_post_submit(r->target_buf);
-
-      DBG("%s@0x%08x + 0x%08x -> %s@0x%08x + 0x%08x\n",
-	  bo_fake->name, (uint32_t)bo->offset, r->offset,
-	  target_fake->name, (uint32_t)r->target_buf->offset, r->delta);
-   }
-
-   assert(bo_fake->map_count == 0);
-   bo_fake->validated = GL_FALSE;
-   bo_fake->validate_flags = 0;
-}
-
-
-static void
-dri_fake_post_submit(dri_bo *batch_buf)
-{
-   dri_fake_fence_validated(batch_buf->bufmgr);
-
-   dri_bo_fake_post_submit(batch_buf);
-}
-
-static int
-dri_fake_check_aperture_space(dri_bo *bo)
-{
-   dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bo->bufmgr;
-   dri_bo_fake *bo_fake = (dri_bo_fake *)bo;
-   GLuint sz;
-
-   sz = (bo->size + bo_fake->alignment - 1) & ~(bo_fake->alignment - 1);
-
-   if (bo_fake->size_accounted || bo_fake->is_static)
-      return 0;
-
-   if (bufmgr_fake->current_total_size + sz > bufmgr_fake->size) {
-     DBG("check_space: %s bo %d %d overflowed bufmgr size %d\n", bo_fake->name, bo_fake->id, sz, bufmgr_fake->size);
-      return -1;
-   }
-
-   bufmgr_fake->current_total_size += sz;
-   bo_fake->size_accounted = 1;
-   DBG("drm_check_space: buf %d, %s %d %d\n", bo_fake->id, bo_fake->name, bo->size, bufmgr_fake->current_total_size);
-   return 0;
-}
-
-dri_bufmgr *
-dri_bufmgr_fake_init(unsigned long low_offset, void *low_virtual,
-		     unsigned long size,
-		     unsigned int (*fence_emit)(void *private),
-		     int (*fence_wait)(void *private, unsigned int cookie),
-		     void *driver_priv)
-{
-   dri_bufmgr_fake *bufmgr_fake;
-
-   bufmgr_fake = calloc(1, sizeof(*bufmgr_fake));
-
-   /* Initialize allocator */
-   make_empty_list(&bufmgr_fake->fenced);
-   make_empty_list(&bufmgr_fake->on_hardware);
-   make_empty_list(&bufmgr_fake->lru);
-
-   bufmgr_fake->low_offset = low_offset;
-   bufmgr_fake->virtual = low_virtual;
-   bufmgr_fake->size = size;
-   bufmgr_fake->heap = mmInit(low_offset, size);
-
-   /* Hook in methods */
-   bufmgr_fake->bufmgr.bo_alloc = dri_fake_bo_alloc;
-   bufmgr_fake->bufmgr.bo_alloc_static = dri_fake_bo_alloc_static;
-   bufmgr_fake->bufmgr.bo_reference = dri_fake_bo_reference;
-   bufmgr_fake->bufmgr.bo_unreference = dri_fake_bo_unreference;
-   bufmgr_fake->bufmgr.bo_map = dri_fake_bo_map;
-   bufmgr_fake->bufmgr.bo_unmap = dri_fake_bo_unmap;
-   bufmgr_fake->bufmgr.destroy = dri_fake_destroy;
-   bufmgr_fake->bufmgr.emit_reloc = dri_fake_emit_reloc;
-   bufmgr_fake->bufmgr.process_relocs = dri_fake_process_relocs;
-   bufmgr_fake->bufmgr.post_submit = dri_fake_post_submit;
-   bufmgr_fake->bufmgr.check_aperture_space = dri_fake_check_aperture_space;
-   bufmgr_fake->bufmgr.debug = GL_FALSE;
-
-   bufmgr_fake->fence_emit = fence_emit;
-   bufmgr_fake->fence_wait = fence_wait;
-   bufmgr_fake->driver_priv = driver_priv;
-
-   return &bufmgr_fake->bufmgr;
-}
-