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-rw-r--r--libdrm/intel/intel_bufmgr_gem.c992
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diff --git a/libdrm/intel/intel_bufmgr_gem.c b/libdrm/intel/intel_bufmgr_gem.c
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+++ b/libdrm/intel/intel_bufmgr_gem.c
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+/**************************************************************************
+ *
+ * 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 "dri_bufmgr.h"
+#include "intel_bufmgr.h"
+#include "string.h"
+
+#include "i915_drm.h"
+
+#define DBG(...) do { \
+ if (bufmgr_gem->bufmgr.debug) \
+ fprintf(stderr, __VA_ARGS__); \
+} while (0)
+
+typedef struct _dri_bo_gem dri_bo_gem;
+
+struct dri_gem_bo_bucket {
+ dri_bo_gem *head, **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;
+
+ struct intel_bufmgr intel_bufmgr;
+
+ int fd;
+
+ int 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;
+
+struct _dri_bo_gem {
+ dri_bo bo;
+
+ int refcount;
+ /** Boolean whether the mmap ioctl has been called for this buffer yet. */
+ int mapped;
+ uint32_t gem_handle;
+ const char *name;
+
+ /**
+ * Kenel-assigned global name for this object
+ */
+ unsigned int global_name;
+
+ /**
+ * Index of the buffer within the validation list while preparing a
+ * batchbuffer execution.
+ */
+ int validate_index;
+
+ /**
+ * Boolean whether we've started swrast
+ * Set when the buffer has been mapped
+ * Cleared when the buffer is unmapped
+ */
+ int swrast;
+
+ /** 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;
+
+ /** free list */
+ dri_bo_gem *next;
+};
+
+static int
+logbase2(int n)
+{
+ int i = 1;
+ int 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)
+{
+ 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;
+ int alloc_from_cache = 0;
+ unsigned long bo_size;
+
+ /* Round the allocated size up to a power of two number of pages. */
+ bo_size = 1 << logbase2(size);
+ if (bo_size < page_size)
+ bo_size = page_size;
+ bucket = dri_gem_bo_bucket_for_size(bufmgr_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_size = size;
+ if (bo_size < page_size)
+ bo_size = page_size;
+ }
+
+ /* Get a buffer out of the cache if available */
+ if (bucket != NULL && bucket->num_entries > 0) {
+ struct drm_i915_gem_busy busy;
+
+ bo_gem = bucket->head;
+ busy.handle = bo_gem->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 = bo_gem->next;
+ if (bo_gem->next == NULL)
+ bucket->tail = &bucket->head;
+ bucket->num_entries--;
+ }
+ }
+
+ if (!alloc_from_cache) {
+ struct drm_i915_gem_create create;
+
+ bo_gem = calloc(1, sizeof(*bo_gem));
+ if (!bo_gem)
+ return NULL;
+
+ bo_gem->bo.size = bo_size;
+ memset(&create, 0, sizeof(create));
+ create.size = bo_size;
+
+ ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_CREATE, &create);
+ bo_gem->gem_handle = create.handle;
+ if (ret != 0) {
+ free(bo_gem);
+ return 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;
+}
+
+/**
+ * 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_bo_gem_create_from_name(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_free(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_close close;
+ int ret;
+
+ if (bo_gem->mapped)
+ munmap (bo_gem->virtual, bo_gem->bo.size);
+
+ /* 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));
+ }
+ free(bo);
+}
+
+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;
+
+ 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);
+ }
+
+ DBG("bo_unreference final: %d (%s)\n",
+ bo_gem->gem_handle, bo_gem->name);
+
+ 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)))
+ {
+ bo_gem->name = 0;
+ bo_gem->validate_index = -1;
+ bo_gem->relocs = NULL;
+ bo_gem->reloc_target_bo = NULL;
+ bo_gem->reloc_count = 0;
+
+ bo_gem->next = NULL;
+ *bucket->tail = bo_gem;
+ bucket->tail = &bo_gem->next;
+ bucket->num_entries++;
+ } else {
+ dri_gem_bo_free(bo);
+ }
+
+ return;
+ }
+}
+
+static int
+dri_gem_bo_map(dri_bo *bo, int write_enable)
+{
+ dri_bufmgr_gem *bufmgr_gem;
+ dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
+ struct drm_i915_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_i915_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_I915_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->swrast = 0;
+ bo_gem->mapped = 1;
+ DBG("bo_map: %d (%s) -> %p\n", bo_gem->gem_handle, bo_gem->name, bo_gem->virtual);
+ }
+
+ if (!bo_gem->swrast) {
+ set_domain.handle = bo_gem->gem_handle;
+ set_domain.read_domains = I915_GEM_DOMAIN_CPU;
+ if (write_enable)
+ set_domain.write_domain = I915_GEM_DOMAIN_CPU;
+ else
+ set_domain.write_domain = 0;
+ do {
+ ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_SET_DOMAIN,
+ &set_domain);
+ } while (ret == -1 && errno == EINTR);
+ if (ret != 0) {
+ fprintf (stderr, "%s:%d: Error setting swrast %d: %s\n",
+ __FILE__, __LINE__, bo_gem->gem_handle, strerror (errno));
+ }
+ bo_gem->swrast = 1;
+ }
+
+ return 0;
+}
+
+static int
+dri_gem_bo_unmap(dri_bo *bo)
+{
+ dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr;
+ dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
+ struct drm_i915_gem_sw_finish sw_finish;
+ int ret;
+
+ if (bo == NULL)
+ return 0;
+
+ assert(bo_gem->mapped);
+
+ if (bo_gem->swrast) {
+ sw_finish.handle = bo_gem->gem_handle;
+ do {
+ ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_SW_FINISH,
+ &sw_finish);
+ } while (ret == -1 && errno == EINTR);
+ bo_gem->swrast = 0;
+ }
+ 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_i915_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;
+ do {
+ ret = ioctl (bufmgr_gem->fd, DRM_IOCTL_I915_GEM_PWRITE, &pwrite);
+ } while (ret == -1 && errno == EINTR);
+ 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_i915_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;
+ do {
+ ret = ioctl (bufmgr_gem->fd, DRM_IOCTL_I915_GEM_PREAD, &pread);
+ } while (ret == -1 && errno == EINTR);
+ 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_i915_gem_set_domain set_domain;
+ int ret;
+
+ set_domain.handle = bo_gem->gem_handle;
+ set_domain.read_domains = I915_GEM_DOMAIN_GTT;
+ set_domain.write_domain = 0;
+ ret = ioctl (bufmgr_gem->fd, DRM_IOCTL_I915_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];
+ dri_bo_gem *bo_gem;
+
+ while ((bo_gem = bucket->head) != NULL) {
+ bucket->head = bo_gem->next;
+ if (bo_gem->next == NULL)
+ bucket->tail = &bucket->head;
+ bucket->num_entries--;
+
+ dri_gem_bo_free(&bo_gem->bo);
+ }
+ }
+
+ 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 swrast on next bo_map */
+ bo_gem->swrast = 0;
+
+ /* 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;
+}
+
+static int
+dri_gem_pin(dri_bo *bo, uint32_t alignment)
+{
+ dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr;
+ dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
+ struct drm_i915_gem_pin pin;
+ int ret;
+
+ pin.handle = bo_gem->gem_handle;
+ pin.alignment = alignment;
+
+ ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_PIN, &pin);
+ if (ret != 0)
+ return -errno;
+
+ bo->offset = pin.offset;
+ return 0;
+}
+
+static int
+dri_gem_unpin(dri_bo *bo)
+{
+ dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr;
+ dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
+ struct drm_i915_gem_unpin unpin;
+ int ret;
+
+ unpin.handle = bo_gem->gem_handle;
+
+ ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_UNPIN, &unpin);
+ if (ret != 0)
+ return -errno;
+
+ return 0;
+}
+
+static int
+dri_gem_set_tiling(dri_bo *bo, uint32_t *tiling_mode)
+{
+ dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr;
+ dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
+ struct drm_i915_gem_set_tiling set_tiling;
+ int ret;
+
+ set_tiling.handle = bo_gem->gem_handle;
+ set_tiling.tiling_mode = *tiling_mode;
+
+ ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_SET_TILING, &set_tiling);
+ if (ret != 0) {
+ *tiling_mode = I915_TILING_NONE;
+ return -errno;
+ }
+
+ *tiling_mode = set_tiling.tiling_mode;
+ return 0;
+}
+
+static int
+dri_gem_flink(dri_bo *bo, uint32_t *name)
+{
+ dri_bufmgr_gem *bufmgr_gem = (dri_bufmgr_gem *)bo->bufmgr;
+ dri_bo_gem *bo_gem = (dri_bo_gem *)bo;
+ struct drm_gem_flink flink;
+ int ret;
+
+ if (!bo_gem->global_name) {
+ flink.handle = bo_gem->gem_handle;
+
+ ret = ioctl(bufmgr_gem->fd, DRM_IOCTL_GEM_FLINK, &flink);
+ if (ret != 0)
+ return -errno;
+ bo_gem->gem_handle = flink.name;
+ }
+
+ *name = bo_gem->gem_handle;
+ return 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_bufmgr_gem_enable_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_array, int count)
+{
+ 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_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.process_relocs = dri_gem_process_reloc;
+ bufmgr_gem->bufmgr.post_submit = dri_gem_post_submit;
+ bufmgr_gem->bufmgr.debug = 0;
+ bufmgr_gem->bufmgr.check_aperture_space = dri_gem_check_aperture_space;
+ bufmgr_gem->intel_bufmgr.emit_reloc = dri_gem_emit_reloc;
+ bufmgr_gem->intel_bufmgr.pin = dri_gem_pin;
+ bufmgr_gem->intel_bufmgr.unpin = dri_gem_unpin;
+ bufmgr_gem->intel_bufmgr.set_tiling = dri_gem_set_tiling;
+ bufmgr_gem->intel_bufmgr.flink = dri_gem_flink;
+ /* 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;
+}
+
+int
+intel_bo_emit_reloc(dri_bo *reloc_buf,
+ uint32_t read_domains, uint32_t write_domain,
+ uint32_t delta, uint32_t offset, dri_bo *target_buf)
+{
+ struct intel_bufmgr *intel_bufmgr;
+
+ intel_bufmgr = (struct intel_bufmgr *)(reloc_buf->bufmgr + 1);
+
+ return intel_bufmgr->emit_reloc(reloc_buf, read_domains, write_domain,
+ delta, offset, target_buf);
+}
+
+int
+intel_bo_pin(dri_bo *bo, uint32_t alignment)
+{
+ struct intel_bufmgr *intel_bufmgr;
+
+ intel_bufmgr = (struct intel_bufmgr *)(bo->bufmgr + 1);
+
+ if (intel_bufmgr->pin)
+ return intel_bufmgr->pin(bo, alignment);
+
+ return 0;
+}
+
+int
+intel_bo_unpin(dri_bo *bo)
+{
+ struct intel_bufmgr *intel_bufmgr;
+
+ intel_bufmgr = (struct intel_bufmgr *)(bo->bufmgr + 1);
+
+ if (intel_bufmgr->unpin)
+ return intel_bufmgr->unpin(bo);
+
+ return 0;
+}
+
+int intel_bo_set_tiling(dri_bo *bo, uint32_t *tiling_mode)
+{
+ struct intel_bufmgr *intel_bufmgr;
+
+ intel_bufmgr = (struct intel_bufmgr *)(bo->bufmgr + 1);
+
+ if (intel_bufmgr->set_tiling)
+ return intel_bufmgr->set_tiling (bo, tiling_mode);
+
+ *tiling_mode = I915_TILING_NONE;
+ return 0;
+}
+
+int intel_bo_flink(dri_bo *bo, uint32_t *name)
+{
+ struct intel_bufmgr *intel_bufmgr;
+
+ intel_bufmgr = (struct intel_bufmgr *)(bo->bufmgr + 1);
+
+ if (intel_bufmgr->flink)
+ return intel_bufmgr->flink (bo, name);
+
+ return -ENODEV;
+}
+