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-rw-r--r--libdrm/intel/intel_bufmgr_fake.c1177
-rw-r--r--libdrm/intel/intel_bufmgr_fake.h50
-rw-r--r--libdrm/intel/intel_bufmgr_gem.c847
-rw-r--r--libdrm/intel/intel_bufmgr_gem.h16
4 files changed, 2090 insertions, 0 deletions
diff --git a/libdrm/intel/intel_bufmgr_fake.c b/libdrm/intel/intel_bufmgr_fake.c
new file mode 100644
index 00000000..2aed3d85
--- /dev/null
+++ b/libdrm/intel/intel_bufmgr_fake.c
@@ -0,0 +1,1177 @@
+/**************************************************************************
+ *
+ * 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 "intel_bufmgr_fake.h"
+#include "drm.h"
+#include "i915_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;
+ /** Cache domains the target buffer is read into. */
+ uint32_t read_domains;
+ /** Cache domain the target buffer will have dirty cachelines in. */
+ uint32_t write_domain;
+};
+
+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;
+ /** Cache domains the target buffer is read into. */
+ uint32_t read_domains;
+ /** Cache domain the target buffer will have dirty cachelines in. */
+ uint32_t write_domain;
+
+ unsigned int alignment;
+ GLboolean is_static, validated;
+ unsigned int map_count;
+
+ /** 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 rendering to a buffer to complete.
+ *
+ * It is assumed that the bathcbuffer which performed the rendering included
+ * the necessary flushing.
+ */
+static void
+dri_fake_bo_wait_rendering(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_fake_bo_wait_rendering(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)
+{
+ 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,
+ uint32_t read_domains, uint32_t write_domain,
+ uint32_t delta, uint32_t 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->read_domains = read_domains;
+ r->write_domain = write_domain;
+
+ 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_domains(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_domains(r->target_buf);
+
+ target_fake->read_domains |= r->read_domains;
+ if (target_fake->write_domain != 0)
+ target_fake->write_domain = r->write_domain;
+ }
+}
+
+
+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->write_domain != 0) {
+ 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);
+}
+
+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_domains(batch_buf);
+
+ batch_fake->read_domains = DRM_GEM_DOMAIN_I915_COMMAND;
+
+ /* 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->read_domains = 0;
+ bo_fake->write_domain = 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.bo_wait_rendering = dri_fake_bo_wait_rendering;
+ 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;
+}
+
diff --git a/libdrm/intel/intel_bufmgr_fake.h b/libdrm/intel/intel_bufmgr_fake.h
new file mode 100644
index 00000000..bc7e59e6
--- /dev/null
+++ b/libdrm/intel/intel_bufmgr_fake.h
@@ -0,0 +1,50 @@
+/**************************************************************************
+ *
+ * Copyright © 2007 Intel Corporation
+ * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA
+ * 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 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
+ * THE COPYRIGHT HOLDERS, AUTHORS 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.
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ *
+ **************************************************************************/
+/*
+ * Authors: Thomas Hellström <thomas-at-tungstengraphics-dot-com>
+ * Keith Whitwell <keithw-at-tungstengraphics-dot-com>
+ * Eric Anholt <eric@anholt.net>
+ */
+
+#ifndef _INTEL_BUFMGR_FAKE_H_
+#define _INTEL_BUFMGR_FAKE_H_
+
+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_bo_fake_disable_backing_store(dri_bo *bo,
+ void (*invalidate_cb)(dri_bo *bo,
+ void *ptr),
+ void *ptr);
+#endif /* _INTEL_BUFMGR_FAKE_H_ */
+
diff --git a/libdrm/intel/intel_bufmgr_gem.c b/libdrm/intel/intel_bufmgr_gem.c
new file mode 100644
index 00000000..3c1c3157
--- /dev/null
+++ b/libdrm/intel/intel_bufmgr_gem.c
@@ -0,0 +1,847 @@
+/**************************************************************************
+ *
+ * Copyright © 2007 Red Hat Inc.
+ * Copyright © 2007 Intel Corporation
+ * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA
+ * 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 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
+ * THE COPYRIGHT HOLDERS, AUTHORS 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.
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ *
+ **************************************************************************/
+/*
+ * Authors: Thomas Hellström <thomas-at-tungstengraphics-dot-com>
+ * Keith Whitwell <keithw-at-tungstengraphics-dot-com>
+ * Eric Anholt <eric@anholt.net>
+ * Dave Airlie <airlied@linux.ie>
+ */
+
+#include <xf86drm.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <assert.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+
+#include "errno.h"
+#include "mtypes.h"
+#include "dri_bufmgr.h"
+#include "string.h"
+#include "imports.h"
+
+#include "i915_drm.h"
+
+#include "intel_bufmgr_gem.h"
+
+#define DBG(...) do { \
+ if (bufmgr_gem->bufmgr.debug) \
+ fprintf(stderr, __VA_ARGS__); \
+} while (0)
+
+struct intel_validate_entry {
+ dri_bo *bo;
+ struct drm_i915_op_arg bo_arg;
+};
+
+struct dri_gem_bo_bucket_entry {
+ uint32_t gem_handle;
+ uint32_t last_offset;
+ struct dri_gem_bo_bucket_entry *next;
+};
+
+struct dri_gem_bo_bucket {
+ struct dri_gem_bo_bucket_entry *head;
+ struct dri_gem_bo_bucket_entry **tail;
+ /**
+ * Limit on the number of entries in this bucket.
+ *
+ * 0 means that this caching at this bucket size is disabled.
+ * -1 means that there is no limit to caching at this size.
+ */
+ int max_entries;
+ int num_entries;
+};
+
+/* Arbitrarily chosen, 16 means that the maximum size we'll cache for reuse
+ * is 1 << 16 pages, or 256MB.
+ */
+#define INTEL_GEM_BO_BUCKETS 16
+typedef struct _dri_bufmgr_gem {
+ dri_bufmgr bufmgr;
+
+ int fd;
+
+ uint32_t max_relocs;
+
+ struct drm_i915_gem_exec_object *exec_objects;
+ dri_bo **exec_bos;
+ int exec_size;
+ int exec_count;
+
+ /** Array of lists of cached gem objects of power-of-two sizes */
+ struct dri_gem_bo_bucket cache_bucket[INTEL_GEM_BO_BUCKETS];
+
+ struct drm_i915_gem_execbuffer exec_arg;
+} dri_bufmgr_gem;
+
+typedef struct _dri_bo_gem {
+ dri_bo bo;
+
+ int refcount;
+ GLboolean mapped;
+ uint32_t gem_handle;
+ const char *name;
+
+ /**
+ * Index of the buffer within the validation list while preparing a
+ * batchbuffer execution.
+ */
+ int validate_index;
+
+ /**
+ * Tracks whether set_domain to CPU is current
+ * Set when set_domain has been called
+ * Cleared when a batch has been submitted
+ */
+ GLboolean cpu_domain_set;
+
+ /** Array passed to the DRM containing relocation information. */
+ struct drm_i915_gem_relocation_entry *relocs;
+ /** Array of bos corresponding to relocs[i].target_handle */
+ dri_bo **reloc_target_bo;
+ /** Number of entries in relocs */
+ int reloc_count;
+ /** Mapped address for the buffer */
+ void *virtual;
+} dri_bo_gem;
+
+static int
+logbase2(int n)
+{
+ GLint i = 1;
+ GLint log2 = 0;
+
+ while (n > i) {
+ i *= 2;
+ log2++;
+ }
+
+ return log2;
+}
+
+static struct dri_gem_bo_bucket *
+dri_gem_bo_bucket_for_size(dri_bufmgr_gem *bufmgr_gem, unsigned long size)
+{
+ int i;
+
+ /* We only do buckets in power of two increments */
+ if ((size & (size - 1)) != 0)
+ return NULL;
+
+ /* We should only see sizes rounded to pages. */
+ assert((size % 4096) == 0);
+
+ /* We always allocate in units of pages */
+ i = ffs(size / 4096) - 1;
+ if (i >= INTEL_GEM_BO_BUCKETS)
+ return NULL;
+
+ return &bufmgr_gem->cache_bucket[i];
+}
+
+
+static void dri_gem_dump_validation_list(dri_bufmgr_gem *bufmgr_gem)
+{
+ int i, j;
+
+ for (i = 0; i < bufmgr_gem->exec_count; i++) {
+ dri_bo *bo = bufmgr_gem->exec_bos[i];
+ dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
+
+ if (bo_gem->relocs == NULL) {
+ DBG("%2d: %d (%s)\n", i, bo_gem->gem_handle, bo_gem->name);
+ continue;
+ }
+
+ for (j = 0; j < bo_gem->reloc_count; j++) {
+ dri_bo *target_bo = bo_gem->reloc_target_bo[j];
+ dri_bo_gem *target_gem = (dri_bo_gem *)target_bo;
+
+ DBG("%2d: %d (%s)@0x%08llx -> %d (%s)@0x%08lx + 0x%08x\n",
+ i,
+ bo_gem->gem_handle, bo_gem->name, bo_gem->relocs[j].offset,
+ target_gem->gem_handle, target_gem->name, target_bo->offset,
+ bo_gem->relocs[j].delta);
+ }
+ }
+}
+
+/**
+ * Adds the given buffer to the list of buffers to be validated (moved into the
+ * appropriate memory type) with the next batch submission.
+ *
+ * If a buffer is validated multiple times in a batch submission, it ends up
+ * with the intersection of the memory type flags and the union of the
+ * access flags.
+ */
+static void
+intel_add_validate_buffer(dri_bo *bo)
+{
+ dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr;
+ dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
+ int index;
+
+ if (bo_gem->validate_index != -1)
+ return;
+
+ /* Extend the array of validation entries as necessary. */
+ if (bufmgr_gem->exec_count == bufmgr_gem->exec_size) {
+ int new_size = bufmgr_gem->exec_size * 2;
+
+ if (new_size == 0)
+ new_size = 5;
+
+ bufmgr_gem->exec_objects =
+ realloc(bufmgr_gem->exec_objects,
+ sizeof(*bufmgr_gem->exec_objects) * new_size);
+ bufmgr_gem->exec_bos =
+ realloc(bufmgr_gem->exec_bos,
+ sizeof(*bufmgr_gem->exec_bos) * new_size);
+ bufmgr_gem->exec_size = new_size;
+ }
+
+ index = bufmgr_gem->exec_count;
+ bo_gem->validate_index = index;
+ /* Fill in array entry */
+ bufmgr_gem->exec_objects[index].handle = bo_gem->gem_handle;
+ bufmgr_gem->exec_objects[index].relocation_count = bo_gem->reloc_count;
+ bufmgr_gem->exec_objects[index].relocs_ptr = (uintptr_t)bo_gem->relocs;
+ bufmgr_gem->exec_objects[index].alignment = 0;
+ bufmgr_gem->exec_objects[index].offset = 0;
+ bufmgr_gem->exec_bos[index] = bo;
+ dri_bo_reference(bo);
+ bufmgr_gem->exec_count++;
+}
+
+
+#define RELOC_BUF_SIZE(x) ((I915_RELOC_HEADER + x * I915_RELOC0_STRIDE) * \
+ sizeof(uint32_t))
+
+static int
+intel_setup_reloc_list(dri_bo *bo)
+{
+ dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
+ dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr;
+
+ bo_gem->relocs = malloc(bufmgr_gem->max_relocs *
+ sizeof(struct drm_i915_gem_relocation_entry));
+ bo_gem->reloc_target_bo = malloc(bufmgr_gem->max_relocs * sizeof(dri_bo *));
+
+ return 0;
+}
+
+static dri_bo *
+dri_gem_bo_alloc(dri_bufmgr *bufmgr, const char *name,
+ unsigned long size, unsigned int alignment,
+ uint64_t location_mask)
+{
+ dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bufmgr;
+ dri_bo_gem *bo_gem;
+ unsigned int page_size = getpagesize();
+ int ret;
+ struct dri_gem_bo_bucket *bucket;
+ GLboolean alloc_from_cache = GL_FALSE;
+
+ bo_gem = calloc(1, sizeof(*bo_gem));
+ if (!bo_gem)
+ return NULL;
+
+ /* Round the allocated size up to a power of two number of pages. */
+ bo_gem->bo.size = 1 << logbase2(size);
+ if (bo_gem->bo.size < page_size)
+ bo_gem->bo.size = page_size;
+ bucket = dri_gem_bo_bucket_for_size(bufmgr_gem, bo_gem->bo.size);
+
+ /* If we don't have caching at this size, don't actually round the
+ * allocation up.
+ */
+ if (bucket == NULL || bucket->max_entries == 0) {
+ bo_gem->bo.size = size;
+ if (bo_gem->bo.size < page_size)
+ bo_gem->bo.size = page_size;
+ }
+
+ /* Get a buffer out of the cache if available */
+ if (bucket != NULL && bucket->num_entries > 0) {
+ struct dri_gem_bo_bucket_entry *entry = bucket->head;
+ struct drm_i915_gem_busy busy;
+
+ busy.handle = entry->gem_handle;
+ ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_BUSY, &busy);
+ alloc_from_cache = (ret == 0 && busy.busy == 0);
+
+ if (alloc_from_cache) {
+ bucket->head = entry->next;
+ if (entry->next == NULL)
+ bucket->tail = &bucket->head;
+ bucket->num_entries--;
+
+ bo_gem->gem_handle = entry->gem_handle;
+ bo_gem->bo.offset = entry->last_offset;
+ free(entry);
+ }
+ }
+
+ if (!alloc_from_cache) {
+ struct drm_gem_create create;
+
+ memset(&create, 0, sizeof(create));
+ create.size = bo_gem->bo.size;
+
+ ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_GEM_CREATE, &create);
+ bo_gem->gem_handle = create.handle;
+ if (ret != 0) {
+ free(bo_gem);
+ return NULL;
+ }
+ }
+
+ bo_gem->bo.virtual = NULL;
+ bo_gem->bo.bufmgr = bufmgr;
+ bo_gem->name = name;
+ bo_gem->refcount = 1;
+ bo_gem->validate_index = -1;
+
+ DBG("bo_create: buf %d (%s) %ldb\n",
+ bo_gem->gem_handle, bo_gem->name, size);
+
+ return &bo_gem->bo;
+}
+
+/* Our GEM backend doesn't allow creation of static buffers, as that requires
+ * privelege for the non-fake case, and the lock in the fake case where we were
+ * working around the X Server not creating buffers and passing handles to us.
+ */
+static dri_bo *
+dri_gem_bo_alloc_static(dri_bufmgr *bufmgr, const char *name,
+ unsigned long offset, unsigned long size, void *virtual,
+ uint64_t location_mask)
+{
+ return NULL;
+}
+
+/**
+ * Returns a dri_bo wrapping the given buffer object handle.
+ *
+ * This can be used when one application needs to pass a buffer object
+ * to another.
+ */
+dri_bo *
+intel_gem_bo_create_from_handle(dri_bufmgr *bufmgr, const char *name,
+ unsigned int handle)
+{
+ dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bufmgr;
+ dri_bo_gem *bo_gem;
+ int ret;
+ struct drm_gem_open open_arg;
+
+ bo_gem = calloc(1, sizeof(*bo_gem));
+ if (!bo_gem)
+ return NULL;
+
+ memset(&open_arg, 0, sizeof(open_arg));
+ open_arg.name = handle;
+ ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_GEM_OPEN, &open_arg);
+ if (ret != 0) {
+ fprintf(stderr, "Couldn't reference %s handle 0x%08x: %s\n",
+ name, handle, strerror(-ret));
+ free(bo_gem);
+ return NULL;
+ }
+ bo_gem->bo.size = open_arg.size;
+ bo_gem->bo.offset = 0;
+ bo_gem->bo.virtual = NULL;
+ bo_gem->bo.bufmgr = bufmgr;
+ bo_gem->name = name;
+ bo_gem->refcount = 1;
+ bo_gem->validate_index = -1;
+ bo_gem->gem_handle = open_arg.handle;
+
+ DBG("bo_create_from_handle: %d (%s)\n", handle, bo_gem->name);
+
+ return &bo_gem->bo;
+}
+
+static void
+dri_gem_bo_reference(dri_bo *bo)
+{
+ dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
+
+ bo_gem->refcount++;
+}
+
+static void
+dri_gem_bo_unreference(dri_bo *bo)
+{
+ dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr;
+ dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
+
+ if (!bo)
+ return;
+
+ if (--bo_gem->refcount == 0) {
+ struct dri_gem_bo_bucket *bucket;
+ int ret;
+
+ if (bo_gem->mapped)
+ munmap (bo_gem->virtual, bo->size);
+
+ if (bo_gem->relocs != NULL) {
+ int i;
+
+ /* Unreference all the target buffers */
+ for (i = 0; i < bo_gem->reloc_count; i++)
+ dri_bo_unreference(bo_gem->reloc_target_bo[i]);
+ free(bo_gem->reloc_target_bo);
+ free(bo_gem->relocs);
+ }
+
+ bucket = dri_gem_bo_bucket_for_size(bufmgr_gem, bo->size);
+ /* Put the buffer into our internal cache for reuse if we can. */
+ if (bucket != NULL &&
+ (bucket->max_entries == -1 ||
+ (bucket->max_entries > 0 &&
+ bucket->num_entries < bucket->max_entries)))
+ {
+ struct dri_gem_bo_bucket_entry *entry;
+
+ entry = calloc(1, sizeof(*entry));
+ entry->gem_handle = bo_gem->gem_handle;
+ entry->last_offset = bo->offset;
+
+ entry->next = NULL;
+ *bucket->tail = entry;
+ bucket->tail = &entry->next;
+ bucket->num_entries++;
+ } else {
+ struct drm_gem_close close;
+
+ /* Close this object */
+ close.handle = bo_gem->gem_handle;
+ ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_GEM_CLOSE, &close);
+ if (ret != 0) {
+ fprintf(stderr,
+ "DRM_IOCTL_GEM_CLOSE %d failed (%s): %s\n",
+ bo_gem->gem_handle, bo_gem->name, strerror(-ret));
+ }
+ }
+
+ DBG("bo_unreference final: %d (%s)\n",
+ bo_gem->gem_handle, bo_gem->name);
+
+ free(bo);
+ return;
+ }
+}
+
+static int
+dri_gem_bo_map(dri_bo *bo, GLboolean write_enable)
+{
+ dri_bufmgr_gem *bufmgr_gem;
+ dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
+ struct drm_gem_set_domain set_domain;
+ int ret;
+
+ bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr;
+
+ /* Allow recursive mapping. Mesa may recursively map buffers with
+ * nested display loops.
+ */
+ if (!bo_gem->mapped) {
+
+ assert(bo->virtual == NULL);
+
+ DBG("bo_map: %d (%s)\n", bo_gem->gem_handle, bo_gem->name);
+
+ if (bo_gem->virtual == NULL) {
+ struct drm_gem_mmap mmap_arg;
+
+ memset(&mmap_arg, 0, sizeof(mmap_arg));
+ mmap_arg.handle = bo_gem->gem_handle;
+ mmap_arg.offset = 0;
+ mmap_arg.size = bo->size;
+ ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_GEM_MMAP, &mmap_arg);
+ if (ret != 0) {
+ fprintf(stderr, "%s:%d: Error mapping buffer %d (%s): %s .\n",
+ __FILE__, __LINE__,
+ bo_gem->gem_handle, bo_gem->name, strerror(errno));
+ }
+ bo_gem->virtual = (void *)(uintptr_t)mmap_arg.addr_ptr;
+ }
+ bo->virtual = bo_gem->virtual;
+ bo_gem->mapped = GL_TRUE;
+ DBG("bo_map: %d (%s) -> %p\n", bo_gem->gem_handle, bo_gem->name, bo_gem->virtual);
+ }
+
+ if (!bo_gem->cpu_domain_set) {
+ set_domain.handle = bo_gem->gem_handle;
+ set_domain.read_domains = DRM_GEM_DOMAIN_CPU;
+ set_domain.write_domain = write_enable ? DRM_GEM_DOMAIN_CPU : 0;
+ ret = ioctl (bufmgr_gem->fd, DRM_IOCTL_GEM_SET_DOMAIN, &set_domain);
+ if (ret != 0) {
+ fprintf (stderr, "%s:%d: Error setting memory domains %d (%08x %08x): %s .\n",
+ __FILE__, __LINE__,
+ bo_gem->gem_handle, set_domain.read_domains, set_domain.write_domain,
+ strerror (errno));
+ }
+ bo_gem->cpu_domain_set = GL_TRUE;
+ }
+
+ return 0;
+}
+
+static int
+dri_gem_bo_unmap(dri_bo *bo)
+{
+ dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
+
+ if (bo == NULL)
+ return 0;
+
+ assert(bo_gem->mapped);
+
+ return 0;
+}
+
+static int
+dri_gem_bo_subdata (dri_bo *bo, unsigned long offset,
+ unsigned long size, const void *data)
+{
+ dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr;
+ dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
+ struct drm_gem_pwrite pwrite;
+ int ret;
+
+ memset (&pwrite, 0, sizeof (pwrite));
+ pwrite.handle = bo_gem->gem_handle;
+ pwrite.offset = offset;
+ pwrite.size = size;
+ pwrite.data_ptr = (uint64_t) (uintptr_t) data;
+ ret = ioctl (bufmgr_gem->fd, DRM_IOCTL_GEM_PWRITE, &pwrite);
+ if (ret != 0) {
+ fprintf (stderr, "%s:%d: Error writing data to buffer %d: (%d %d) %s .\n",
+ __FILE__, __LINE__,
+ bo_gem->gem_handle, (int) offset, (int) size,
+ strerror (errno));
+ }
+ return 0;
+}
+
+static int
+dri_gem_bo_get_subdata (dri_bo *bo, unsigned long offset,
+ unsigned long size, void *data)
+{
+ dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr;
+ dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
+ struct drm_gem_pread pread;
+ int ret;
+
+ memset (&pread, 0, sizeof (pread));
+ pread.handle = bo_gem->gem_handle;
+ pread.offset = offset;
+ pread.size = size;
+ pread.data_ptr = (uint64_t) (uintptr_t) data;
+ ret = ioctl (bufmgr_gem->fd, DRM_IOCTL_GEM_PREAD, &pread);
+ if (ret != 0) {
+ fprintf (stderr, "%s:%d: Error reading data from buffer %d: (%d %d) %s .\n",
+ __FILE__, __LINE__,
+ bo_gem->gem_handle, (int) offset, (int) size,
+ strerror (errno));
+ }
+ return 0;
+}
+
+static void
+dri_gem_bo_wait_rendering(dri_bo *bo)
+{
+ dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr;
+ dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
+ struct drm_gem_set_domain set_domain;
+ int ret;
+
+ set_domain.handle = bo_gem->gem_handle;
+ set_domain.read_domains = DRM_GEM_DOMAIN_CPU;
+ set_domain.write_domain = 0;
+ ret = ioctl (bufmgr_gem->fd, DRM_IOCTL_GEM_SET_DOMAIN, &set_domain);
+ if (ret != 0) {
+ fprintf (stderr, "%s:%d: Error setting memory domains %d (%08x %08x): %s .\n",
+ __FILE__, __LINE__,
+ bo_gem->gem_handle, set_domain.read_domains, set_domain.write_domain,
+ strerror (errno));
+ }
+}
+
+static void
+dri_bufmgr_gem_destroy(dri_bufmgr *bufmgr)
+{
+ dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bufmgr;
+ int i;
+
+ free(bufmgr_gem->exec_objects);
+ free(bufmgr_gem->exec_bos);
+
+ /* Free any cached buffer objects we were going to reuse */
+ for (i = 0; i < INTEL_GEM_BO_BUCKETS; i++) {
+ struct dri_gem_bo_bucket *bucket = &bufmgr_gem->cache_bucket[i];
+ struct dri_gem_bo_bucket_entry *entry;
+
+ while ((entry = bucket->head) != NULL) {
+ struct drm_gem_close close;
+ int ret;
+
+ bucket->head = entry->next;
+ if (entry->next == NULL)
+ bucket->tail = &bucket->head;
+ bucket->num_entries--;
+
+ /* Close this object */
+ close.handle = entry->gem_handle;
+ ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_GEM_CLOSE, &close);
+ if (ret != 0) {
+ fprintf(stderr, "DRM_IOCTL_GEM_CLOSE failed: %s\n",
+ strerror(-ret));
+ }
+
+ free(entry);
+ }
+ }
+
+ free(bufmgr);
+}
+
+/**
+ * Adds the target buffer to the validation list and adds the relocation
+ * to the reloc_buffer's relocation list.
+ *
+ * The relocation entry at the given offset must already contain the
+ * precomputed relocation value, because the kernel will optimize out
+ * the relocation entry write when the buffer hasn't moved from the
+ * last known offset in target_bo.
+ */
+static int
+dri_gem_emit_reloc(dri_bo *bo, uint32_t read_domains, uint32_t write_domain,
+ uint32_t delta, uint32_t offset, dri_bo *target_bo)
+{
+ dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr;
+ dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
+ dri_bo_gem *target_bo_gem = (dri_bo_gem *)target_bo;
+
+ /* Create a new relocation list if needed */
+ if (bo_gem->relocs == NULL)
+ intel_setup_reloc_list(bo);
+
+ /* Check overflow */
+ assert(bo_gem->reloc_count < bufmgr_gem->max_relocs);
+
+ /* Check args */
+ assert (offset <= bo->size - 4);
+ assert ((write_domain & (write_domain-1)) == 0);
+
+ bo_gem->relocs[bo_gem->reloc_count].offset = offset;
+ bo_gem->relocs[bo_gem->reloc_count].delta = delta;
+ bo_gem->relocs[bo_gem->reloc_count].target_handle =
+ target_bo_gem->gem_handle;
+ bo_gem->relocs[bo_gem->reloc_count].read_domains = read_domains;
+ bo_gem->relocs[bo_gem->reloc_count].write_domain = write_domain;
+ bo_gem->relocs[bo_gem->reloc_count].presumed_offset = target_bo->offset;
+
+ bo_gem->reloc_target_bo[bo_gem->reloc_count] = target_bo;
+ dri_bo_reference(target_bo);
+
+ bo_gem->reloc_count++;
+ return 0;
+}
+
+/**
+ * Walk the tree of relocations rooted at BO and accumulate the list of
+ * validations to be performed and update the relocation buffers with
+ * index values into the validation list.
+ */
+static void
+dri_gem_bo_process_reloc(dri_bo *bo)
+{
+ dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
+ int i;
+
+ if (bo_gem->relocs == NULL)
+ return;
+
+ for (i = 0; i < bo_gem->reloc_count; i++) {
+ dri_bo *target_bo = bo_gem->reloc_target_bo[i];
+
+ /* Continue walking the tree depth-first. */
+ dri_gem_bo_process_reloc(target_bo);
+
+ /* Add the target to the validate list */
+ intel_add_validate_buffer(target_bo);
+ }
+}
+
+static void *
+dri_gem_process_reloc(dri_bo *batch_buf)
+{
+ dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *) batch_buf->bufmgr;
+
+ /* Update indices and set up the validate list. */
+ dri_gem_bo_process_reloc(batch_buf);
+
+ /* Add the batch buffer to the validation list. There are no relocations
+ * pointing to it.
+ */
+ intel_add_validate_buffer(batch_buf);
+
+ bufmgr_gem->exec_arg.buffers_ptr = (uintptr_t)bufmgr_gem->exec_objects;
+ bufmgr_gem->exec_arg.buffer_count = bufmgr_gem->exec_count;
+ bufmgr_gem->exec_arg.batch_start_offset = 0;
+ bufmgr_gem->exec_arg.batch_len = 0; /* written in intel_exec_ioctl */
+
+ return &bufmgr_gem->exec_arg;
+}
+
+static void
+intel_update_buffer_offsets (dri_bufmgr_gem *bufmgr_gem)
+{
+ int i;
+
+ for (i = 0; i < bufmgr_gem->exec_count; i++) {
+ dri_bo *bo = bufmgr_gem->exec_bos[i];
+ dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
+
+ /* Update the buffer offset */
+ if (bufmgr_gem->exec_objects[i].offset != bo->offset) {
+ DBG("BO %d (%s) migrated: 0x%08lx -> 0x%08llx\n",
+ bo_gem->gem_handle, bo_gem->name, bo->offset,
+ bufmgr_gem->exec_objects[i].offset);
+ bo->offset = bufmgr_gem->exec_objects[i].offset;
+ }
+ }
+}
+
+static void
+dri_gem_post_submit(dri_bo *batch_buf)
+{
+ dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)batch_buf->bufmgr;
+ int i;
+
+ intel_update_buffer_offsets (bufmgr_gem);
+
+ if (bufmgr_gem->bufmgr.debug)
+ dri_gem_dump_validation_list(bufmgr_gem);
+
+ for (i = 0; i < bufmgr_gem->exec_count; i++) {
+ dri_bo *bo = bufmgr_gem->exec_bos[i];
+ dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
+
+ /* Need to call set_domain on next bo_map */
+ bo_gem->cpu_domain_set = GL_FALSE;
+
+ /* Disconnect the buffer from the validate list */
+ bo_gem->validate_index = -1;
+ dri_bo_unreference(bo);
+ bufmgr_gem->exec_bos[i] = NULL;
+ }
+ bufmgr_gem->exec_count = 0;
+}
+
+/**
+ * Enables unlimited caching of buffer objects for reuse.
+ *
+ * This is potentially very memory expensive, as the cache at each bucket
+ * size is only bounded by how many buffers of that size we've managed to have
+ * in flight at once.
+ */
+void
+intel_gem_enable_bo_reuse(dri_bufmgr *bufmgr)
+{
+ dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bufmgr;
+ int i;
+
+ for (i = 0; i < INTEL_GEM_BO_BUCKETS; i++) {
+ bufmgr_gem->cache_bucket[i].max_entries = -1;
+ }
+}
+
+/*
+ *
+ */
+static int
+dri_gem_check_aperture_space(dri_bo *bo)
+{
+ return 0;
+}
+
+/**
+ * Initializes the GEM buffer manager, which uses the kernel to allocate, map,
+ * and manage map buffer objections.
+ *
+ * \param fd File descriptor of the opened DRM device.
+ */
+dri_bufmgr *
+intel_bufmgr_gem_init(int fd, int batch_size)
+{
+ dri_bufmgr_gem *bufmgr_gem;
+ int i;
+
+ bufmgr_gem = calloc(1, sizeof(*bufmgr_gem));
+ bufmgr_gem->fd = fd;
+
+ /* Let's go with one relocation per every 2 dwords (but round down a bit
+ * since a power of two will mean an extra page allocation for the reloc
+ * buffer).
+ *
+ * Every 4 was too few for the blender benchmark.
+ */
+ bufmgr_gem->max_relocs = batch_size / sizeof(uint32_t) / 2 - 2;
+
+ bufmgr_gem->bufmgr.bo_alloc = dri_gem_bo_alloc;
+ bufmgr_gem->bufmgr.bo_alloc_static = dri_gem_bo_alloc_static;
+ bufmgr_gem->bufmgr.bo_reference = dri_gem_bo_reference;
+ bufmgr_gem->bufmgr.bo_unreference = dri_gem_bo_unreference;
+ bufmgr_gem->bufmgr.bo_map = dri_gem_bo_map;
+ bufmgr_gem->bufmgr.bo_unmap = dri_gem_bo_unmap;
+ bufmgr_gem->bufmgr.bo_subdata = dri_gem_bo_subdata;
+ bufmgr_gem->bufmgr.bo_get_subdata = dri_gem_bo_get_subdata;
+ bufmgr_gem->bufmgr.bo_wait_rendering = dri_gem_bo_wait_rendering;
+ bufmgr_gem->bufmgr.destroy = dri_bufmgr_gem_destroy;
+ bufmgr_gem->bufmgr.emit_reloc = dri_gem_emit_reloc;
+ bufmgr_gem->bufmgr.process_relocs = dri_gem_process_reloc;
+ bufmgr_gem->bufmgr.post_submit = dri_gem_post_submit;
+ bufmgr_gem->bufmgr.debug = GL_FALSE;
+ bufmgr_gem->bufmgr.check_aperture_space = dri_gem_check_aperture_space;
+ /* Initialize the linked lists for BO reuse cache. */
+ for (i = 0; i < INTEL_GEM_BO_BUCKETS; i++)
+ bufmgr_gem->cache_bucket[i].tail = &bufmgr_gem->cache_bucket[i].head;
+
+ return &bufmgr_gem->bufmgr;
+}
+
diff --git a/libdrm/intel/intel_bufmgr_gem.h b/libdrm/intel/intel_bufmgr_gem.h
new file mode 100644
index 00000000..36caeba2
--- /dev/null
+++ b/libdrm/intel/intel_bufmgr_gem.h
@@ -0,0 +1,16 @@
+
+#ifndef INTEL_BUFMGR_GEM_H
+#define INTEL_BUFMGR_GEM_H
+
+#include "dri_bufmgr.h"
+
+extern dri_bo *intel_gem_bo_create_from_handle(dri_bufmgr *bufmgr,
+ const char *name,
+ unsigned int handle);
+
+dri_bufmgr *intel_bufmgr_gem_init(int fd, int batch_size);
+
+void
+intel_gem_enable_bo_reuse(dri_bufmgr *bufmgr);
+
+#endif /* INTEL_BUFMGR_GEM_H */
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-26 05:09:18 +0000