--- /dev/null
+/**************************************************************************
+ *
+ * Copyright © 2007 Red Hat Inc.
+ * Copyright © 2007-2012 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>
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <xf86drm.h>
+#include <util/u_atomic.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <assert.h>
+#include <pthread.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <stdbool.h>
+
+#include "errno.h"
+#ifndef ETIME
+#define ETIME ETIMEDOUT
+#endif
+#include "libdrm_macros.h"
+#include "util/list.h"
+#include "brw_bufmgr.h"
+#include "intel_bufmgr_priv.h"
+#include "intel_chipset.h"
+#include "string.h"
+
+#include "i915_drm.h"
+#include "uthash.h"
+
+#ifdef HAVE_VALGRIND
+#include <valgrind.h>
+#include <memcheck.h>
+#define VG(x) x
+#else
+#define VG(x)
+#endif
+
+#define memclear(s) memset(&s, 0, sizeof(s))
+
+#define DBG(...) do { \
+ if (bufmgr_gem->bufmgr.debug) \
+ fprintf(stderr, __VA_ARGS__); \
+} while (0)
+
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
+#define MAX2(A, B) ((A) > (B) ? (A) : (B))
+
+static inline int
+atomic_add_unless(int *v, int add, int unless)
+{
+ int c, old;
+ c = p_atomic_read(v);
+ while (c != unless && (old = p_atomic_cmpxchg(v, c, c + add)) != c)
+ c = old;
+ return c == unless;
+}
+
+/**
+ * upper_32_bits - return bits 32-63 of a number
+ * @n: the number we're accessing
+ *
+ * A basic shift-right of a 64- or 32-bit quantity. Use this to suppress
+ * the "right shift count >= width of type" warning when that quantity is
+ * 32-bits.
+ */
+#define upper_32_bits(n) ((__u32)(((n) >> 16) >> 16))
+
+/**
+ * lower_32_bits - return bits 0-31 of a number
+ * @n: the number we're accessing
+ */
+#define lower_32_bits(n) ((__u32)(n))
+
+typedef struct _drm_bacon_bo_gem drm_bacon_bo_gem;
+
+struct drm_bacon_gem_bo_bucket {
+ struct list_head head;
+ unsigned long size;
+};
+
+typedef struct _drm_bacon_bufmgr_gem {
+ drm_bacon_bufmgr bufmgr;
+
+ int refcount;
+
+ int fd;
+
+ int max_relocs;
+
+ pthread_mutex_t lock;
+
+ struct drm_i915_gem_exec_object2 *exec2_objects;
+ drm_bacon_bo **exec_bos;
+ int exec_size;
+ int exec_count;
+
+ /** Array of lists of cached gem objects of power-of-two sizes */
+ struct drm_bacon_gem_bo_bucket cache_bucket[14 * 4];
+ int num_buckets;
+ time_t time;
+
+ struct list_head managers;
+
+ drm_bacon_bo_gem *name_table;
+ drm_bacon_bo_gem *handle_table;
+
+ struct list_head vma_cache;
+ int vma_count, vma_open, vma_max;
+
+ uint64_t gtt_size;
+ int pci_device;
+ int gen;
+ unsigned int has_bsd : 1;
+ unsigned int has_blt : 1;
+ unsigned int has_llc : 1;
+ unsigned int has_wait_timeout : 1;
+ unsigned int bo_reuse : 1;
+ unsigned int no_exec : 1;
+ unsigned int has_vebox : 1;
+ unsigned int has_exec_async : 1;
+
+ struct {
+ void *ptr;
+ uint32_t handle;
+ } userptr_active;
+
+} drm_bacon_bufmgr_gem;
+
+typedef struct _drm_bacon_reloc_target_info {
+ drm_bacon_bo *bo;
+} drm_bacon_reloc_target;
+
+struct _drm_bacon_bo_gem {
+ drm_bacon_bo bo;
+
+ int refcount;
+ uint32_t gem_handle;
+ const char *name;
+
+ /**
+ * Kenel-assigned global name for this object
+ *
+ * List contains both flink named and prime fd'd objects
+ */
+ unsigned int global_name;
+
+ UT_hash_handle handle_hh;
+ UT_hash_handle name_hh;
+
+ /**
+ * Index of the buffer within the validation list while preparing a
+ * batchbuffer execution.
+ */
+ int validate_index;
+
+ /**
+ * Current tiling mode
+ */
+ uint32_t tiling_mode;
+ uint32_t swizzle_mode;
+ unsigned long stride;
+
+ unsigned long kflags;
+
+ time_t free_time;
+
+ /** Array passed to the DRM containing relocation information. */
+ struct drm_i915_gem_relocation_entry *relocs;
+ /**
+ * Array of info structs corresponding to relocs[i].target_handle etc
+ */
+ drm_bacon_reloc_target *reloc_target_info;
+ /** Number of entries in relocs */
+ int reloc_count;
+ /** Array of BOs that are referenced by this buffer and will be softpinned */
+ drm_bacon_bo **softpin_target;
+ /** Number softpinned BOs that are referenced by this buffer */
+ int softpin_target_count;
+ /** Maximum amount of softpinned BOs that are referenced by this buffer */
+ int softpin_target_size;
+
+ /** Mapped address for the buffer, saved across map/unmap cycles */
+ void *mem_virtual;
+ /** GTT virtual address for the buffer, saved across map/unmap cycles */
+ void *gtt_virtual;
+ /** WC CPU address for the buffer, saved across map/unmap cycles */
+ void *wc_virtual;
+ /**
+ * Virtual address of the buffer allocated by user, used for userptr
+ * objects only.
+ */
+ void *user_virtual;
+ int map_count;
+ struct list_head vma_list;
+
+ /** BO cache list */
+ struct list_head head;
+
+ /**
+ * Boolean of whether this BO and its children have been included in
+ * the current drm_bacon_bufmgr_check_aperture_space() total.
+ */
+ bool included_in_check_aperture;
+
+ /**
+ * Boolean of whether this buffer has been used as a relocation
+ * target and had its size accounted for, and thus can't have any
+ * further relocations added to it.
+ */
+ bool used_as_reloc_target;
+
+ /**
+ * Boolean of whether we have encountered an error whilst building the relocation tree.
+ */
+ bool has_error;
+
+ /**
+ * Boolean of whether this buffer can be re-used
+ */
+ bool reusable;
+
+ /**
+ * Boolean of whether the GPU is definitely not accessing the buffer.
+ *
+ * This is only valid when reusable, since non-reusable
+ * buffers are those that have been shared with other
+ * processes, so we don't know their state.
+ */
+ bool idle;
+
+ /**
+ * Boolean of whether this buffer was allocated with userptr
+ */
+ bool is_userptr;
+
+ /**
+ * Size in bytes of this buffer and its relocation descendents.
+ *
+ * Used to avoid costly tree walking in
+ * drm_bacon_bufmgr_check_aperture in the common case.
+ */
+ int reloc_tree_size;
+
+ /** Flags that we may need to do the SW_FINISH ioctl on unmap. */
+ bool mapped_cpu_write;
+};
+
+static unsigned int
+drm_bacon_gem_estimate_batch_space(drm_bacon_bo ** bo_array, int count);
+
+static unsigned int
+drm_bacon_gem_compute_batch_space(drm_bacon_bo ** bo_array, int count);
+
+static int
+drm_bacon_gem_bo_get_tiling(drm_bacon_bo *bo, uint32_t * tiling_mode,
+ uint32_t * swizzle_mode);
+
+static int
+drm_bacon_gem_bo_set_tiling_internal(drm_bacon_bo *bo,
+ uint32_t tiling_mode,
+ uint32_t stride);
+
+static void drm_bacon_gem_bo_unreference_locked_timed(drm_bacon_bo *bo,
+ time_t time);
+
+static void drm_bacon_gem_bo_unreference(drm_bacon_bo *bo);
+
+static void drm_bacon_gem_bo_free(drm_bacon_bo *bo);
+
+static inline drm_bacon_bo_gem *to_bo_gem(drm_bacon_bo *bo)
+{
+ return (drm_bacon_bo_gem *)bo;
+}
+
+static unsigned long
+drm_bacon_gem_bo_tile_size(drm_bacon_bufmgr_gem *bufmgr_gem, unsigned long size,
+ uint32_t *tiling_mode)
+{
+ if (*tiling_mode == I915_TILING_NONE)
+ return size;
+
+ /* 965+ just need multiples of page size for tiling */
+ return ROUND_UP_TO(size, 4096);
+}
+
+/*
+ * Round a given pitch up to the minimum required for X tiling on a
+ * given chip. We use 512 as the minimum to allow for a later tiling
+ * change.
+ */
+static unsigned long
+drm_bacon_gem_bo_tile_pitch(drm_bacon_bufmgr_gem *bufmgr_gem,
+ unsigned long pitch, uint32_t *tiling_mode)
+{
+ unsigned long tile_width;
+
+ /* If untiled, then just align it so that we can do rendering
+ * to it with the 3D engine.
+ */
+ if (*tiling_mode == I915_TILING_NONE)
+ return ALIGN(pitch, 64);
+
+ if (*tiling_mode == I915_TILING_X)
+ tile_width = 512;
+ else
+ tile_width = 128;
+
+ /* 965 is flexible */
+ return ROUND_UP_TO(pitch, tile_width);
+}
+
+static struct drm_bacon_gem_bo_bucket *
+drm_bacon_gem_bo_bucket_for_size(drm_bacon_bufmgr_gem *bufmgr_gem,
+ unsigned long size)
+{
+ int i;
+
+ for (i = 0; i < bufmgr_gem->num_buckets; i++) {
+ struct drm_bacon_gem_bo_bucket *bucket =
+ &bufmgr_gem->cache_bucket[i];
+ if (bucket->size >= size) {
+ return bucket;
+ }
+ }
+
+ return NULL;
+}
+
+static void
+drm_bacon_gem_dump_validation_list(drm_bacon_bufmgr_gem *bufmgr_gem)
+{
+ int i, j;
+
+ for (i = 0; i < bufmgr_gem->exec_count; i++) {
+ drm_bacon_bo *bo = bufmgr_gem->exec_bos[i];
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+
+ if (bo_gem->relocs == NULL && bo_gem->softpin_target == NULL) {
+ DBG("%2d: %d %s(%s)\n", i, bo_gem->gem_handle,
+ bo_gem->kflags & EXEC_OBJECT_PINNED ? "*" : "",
+ bo_gem->name);
+ continue;
+ }
+
+ for (j = 0; j < bo_gem->reloc_count; j++) {
+ drm_bacon_bo *target_bo = bo_gem->reloc_target_info[j].bo;
+ drm_bacon_bo_gem *target_gem =
+ (drm_bacon_bo_gem *) target_bo;
+
+ DBG("%2d: %d %s(%s)@0x%08x %08x -> "
+ "%d (%s)@0x%08x %08x + 0x%08x\n",
+ i,
+ bo_gem->gem_handle,
+ bo_gem->kflags & EXEC_OBJECT_PINNED ? "*" : "",
+ bo_gem->name,
+ upper_32_bits(bo_gem->relocs[j].offset),
+ lower_32_bits(bo_gem->relocs[j].offset),
+ target_gem->gem_handle,
+ target_gem->name,
+ upper_32_bits(target_bo->offset64),
+ lower_32_bits(target_bo->offset64),
+ bo_gem->relocs[j].delta);
+ }
+
+ for (j = 0; j < bo_gem->softpin_target_count; j++) {
+ drm_bacon_bo *target_bo = bo_gem->softpin_target[j];
+ drm_bacon_bo_gem *target_gem =
+ (drm_bacon_bo_gem *) target_bo;
+ DBG("%2d: %d %s(%s) -> "
+ "%d *(%s)@0x%08x %08x\n",
+ i,
+ bo_gem->gem_handle,
+ bo_gem->kflags & EXEC_OBJECT_PINNED ? "*" : "",
+ bo_gem->name,
+ target_gem->gem_handle,
+ target_gem->name,
+ upper_32_bits(target_bo->offset64),
+ lower_32_bits(target_bo->offset64));
+ }
+ }
+}
+
+static inline void
+drm_bacon_gem_bo_reference(drm_bacon_bo *bo)
+{
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+
+ p_atomic_inc(&bo_gem->refcount);
+}
+
+static void
+drm_bacon_add_validate_buffer2(drm_bacon_bo *bo)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem = (drm_bacon_bufmgr_gem *)bo->bufmgr;
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_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->exec2_objects =
+ realloc(bufmgr_gem->exec2_objects,
+ sizeof(*bufmgr_gem->exec2_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->exec2_objects[index].handle = bo_gem->gem_handle;
+ bufmgr_gem->exec2_objects[index].relocation_count = bo_gem->reloc_count;
+ bufmgr_gem->exec2_objects[index].relocs_ptr = (uintptr_t)bo_gem->relocs;
+ bufmgr_gem->exec2_objects[index].alignment = bo->align;
+ bufmgr_gem->exec2_objects[index].offset = bo->offset64;
+ bufmgr_gem->exec2_objects[index].flags = bo_gem->kflags;
+ bufmgr_gem->exec2_objects[index].rsvd1 = 0;
+ bufmgr_gem->exec2_objects[index].rsvd2 = 0;
+ bufmgr_gem->exec_bos[index] = bo;
+ bufmgr_gem->exec_count++;
+}
+
+static void
+drm_bacon_bo_gem_set_in_aperture_size(drm_bacon_bufmgr_gem *bufmgr_gem,
+ drm_bacon_bo_gem *bo_gem,
+ unsigned int alignment)
+{
+ unsigned int size;
+
+ assert(!bo_gem->used_as_reloc_target);
+
+ /* The older chipsets are far-less flexible in terms of tiling,
+ * and require tiled buffer to be size aligned in the aperture.
+ * This means that in the worst possible case we will need a hole
+ * twice as large as the object in order for it to fit into the
+ * aperture. Optimal packing is for wimps.
+ */
+ size = bo_gem->bo.size;
+
+ bo_gem->reloc_tree_size = size + alignment;
+}
+
+static int
+drm_bacon_setup_reloc_list(drm_bacon_bo *bo)
+{
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+ drm_bacon_bufmgr_gem *bufmgr_gem = (drm_bacon_bufmgr_gem *) bo->bufmgr;
+ unsigned int max_relocs = bufmgr_gem->max_relocs;
+
+ if (bo->size / 4 < max_relocs)
+ max_relocs = bo->size / 4;
+
+ bo_gem->relocs = malloc(max_relocs *
+ sizeof(struct drm_i915_gem_relocation_entry));
+ bo_gem->reloc_target_info = malloc(max_relocs *
+ sizeof(drm_bacon_reloc_target));
+ if (bo_gem->relocs == NULL || bo_gem->reloc_target_info == NULL) {
+ bo_gem->has_error = true;
+
+ free (bo_gem->relocs);
+ bo_gem->relocs = NULL;
+
+ free (bo_gem->reloc_target_info);
+ bo_gem->reloc_target_info = NULL;
+
+ return 1;
+ }
+
+ return 0;
+}
+
+static int
+drm_bacon_gem_bo_busy(drm_bacon_bo *bo)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem = (drm_bacon_bufmgr_gem *) bo->bufmgr;
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+ struct drm_i915_gem_busy busy;
+ int ret;
+
+ if (bo_gem->reusable && bo_gem->idle)
+ return false;
+
+ memclear(busy);
+ busy.handle = bo_gem->gem_handle;
+
+ ret = drmIoctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_BUSY, &busy);
+ if (ret == 0) {
+ bo_gem->idle = !busy.busy;
+ return busy.busy;
+ } else {
+ return false;
+ }
+ return (ret == 0 && busy.busy);
+}
+
+static int
+drm_bacon_gem_bo_madvise_internal(drm_bacon_bufmgr_gem *bufmgr_gem,
+ drm_bacon_bo_gem *bo_gem, int state)
+{
+ struct drm_i915_gem_madvise madv;
+
+ memclear(madv);
+ madv.handle = bo_gem->gem_handle;
+ madv.madv = state;
+ madv.retained = 1;
+ drmIoctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_MADVISE, &madv);
+
+ return madv.retained;
+}
+
+static int
+drm_bacon_gem_bo_madvise(drm_bacon_bo *bo, int madv)
+{
+ return drm_bacon_gem_bo_madvise_internal
+ ((drm_bacon_bufmgr_gem *) bo->bufmgr,
+ (drm_bacon_bo_gem *) bo,
+ madv);
+}
+
+/* drop the oldest entries that have been purged by the kernel */
+static void
+drm_bacon_gem_bo_cache_purge_bucket(drm_bacon_bufmgr_gem *bufmgr_gem,
+ struct drm_bacon_gem_bo_bucket *bucket)
+{
+ while (!list_empty(&bucket->head)) {
+ drm_bacon_bo_gem *bo_gem;
+
+ bo_gem = LIST_ENTRY(drm_bacon_bo_gem,
+ bucket->head.next, head);
+ if (drm_bacon_gem_bo_madvise_internal
+ (bufmgr_gem, bo_gem, I915_MADV_DONTNEED))
+ break;
+
+ list_del(&bo_gem->head);
+ drm_bacon_gem_bo_free(&bo_gem->bo);
+ }
+}
+
+static drm_bacon_bo *
+drm_bacon_gem_bo_alloc_internal(drm_bacon_bufmgr *bufmgr,
+ const char *name,
+ unsigned long size,
+ unsigned long flags,
+ uint32_t tiling_mode,
+ unsigned long stride,
+ unsigned int alignment)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem = (drm_bacon_bufmgr_gem *) bufmgr;
+ drm_bacon_bo_gem *bo_gem;
+ unsigned int page_size = getpagesize();
+ int ret;
+ struct drm_bacon_gem_bo_bucket *bucket;
+ bool alloc_from_cache;
+ unsigned long bo_size;
+ bool for_render = false;
+
+ if (flags & BO_ALLOC_FOR_RENDER)
+ for_render = true;
+
+ /* Round the allocated size up to a power of two number of pages. */
+ bucket = drm_bacon_gem_bo_bucket_for_size(bufmgr_gem, size);
+
+ /* If we don't have caching at this size, don't actually round the
+ * allocation up.
+ */
+ if (bucket == NULL) {
+ bo_size = size;
+ if (bo_size < page_size)
+ bo_size = page_size;
+ } else {
+ bo_size = bucket->size;
+ }
+
+ pthread_mutex_lock(&bufmgr_gem->lock);
+ /* Get a buffer out of the cache if available */
+retry:
+ alloc_from_cache = false;
+ if (bucket != NULL && !list_empty(&bucket->head)) {
+ if (for_render) {
+ /* Allocate new render-target BOs from the tail (MRU)
+ * of the list, as it will likely be hot in the GPU
+ * cache and in the aperture for us.
+ */
+ bo_gem = LIST_ENTRY(drm_bacon_bo_gem,
+ bucket->head.prev, head);
+ list_del(&bo_gem->head);
+ alloc_from_cache = true;
+ bo_gem->bo.align = alignment;
+ } else {
+ assert(alignment == 0);
+ /* For non-render-target BOs (where we're probably
+ * going to map it first thing in order to fill it
+ * with data), check if the last BO in the cache is
+ * unbusy, and only reuse in that case. Otherwise,
+ * allocating a new buffer is probably faster than
+ * waiting for the GPU to finish.
+ */
+ bo_gem = LIST_ENTRY(drm_bacon_bo_gem,
+ bucket->head.next, head);
+ if (!drm_bacon_gem_bo_busy(&bo_gem->bo)) {
+ alloc_from_cache = true;
+ list_del(&bo_gem->head);
+ }
+ }
+
+ if (alloc_from_cache) {
+ if (!drm_bacon_gem_bo_madvise_internal
+ (bufmgr_gem, bo_gem, I915_MADV_WILLNEED)) {
+ drm_bacon_gem_bo_free(&bo_gem->bo);
+ drm_bacon_gem_bo_cache_purge_bucket(bufmgr_gem,
+ bucket);
+ goto retry;
+ }
+
+ if (drm_bacon_gem_bo_set_tiling_internal(&bo_gem->bo,
+ tiling_mode,
+ stride)) {
+ drm_bacon_gem_bo_free(&bo_gem->bo);
+ goto retry;
+ }
+ }
+ }
+
+ if (!alloc_from_cache) {
+ struct drm_i915_gem_create create;
+
+ bo_gem = calloc(1, sizeof(*bo_gem));
+ if (!bo_gem)
+ goto err;
+
+ /* drm_bacon_gem_bo_free calls list_del() for an uninitialized
+ list (vma_list), so better set the list head here */
+ list_inithead(&bo_gem->vma_list);
+
+ bo_gem->bo.size = bo_size;
+
+ memclear(create);
+ create.size = bo_size;
+
+ ret = drmIoctl(bufmgr_gem->fd,
+ DRM_IOCTL_I915_GEM_CREATE,
+ &create);
+ if (ret != 0) {
+ free(bo_gem);
+ goto err;
+ }
+
+ bo_gem->gem_handle = create.handle;
+ HASH_ADD(handle_hh, bufmgr_gem->handle_table,
+ gem_handle, sizeof(bo_gem->gem_handle),
+ bo_gem);
+
+ bo_gem->bo.handle = bo_gem->gem_handle;
+ bo_gem->bo.bufmgr = bufmgr;
+ bo_gem->bo.align = alignment;
+
+ bo_gem->tiling_mode = I915_TILING_NONE;
+ bo_gem->swizzle_mode = I915_BIT_6_SWIZZLE_NONE;
+ bo_gem->stride = 0;
+
+ if (drm_bacon_gem_bo_set_tiling_internal(&bo_gem->bo,
+ tiling_mode,
+ stride))
+ goto err_free;
+ }
+
+ bo_gem->name = name;
+ p_atomic_set(&bo_gem->refcount, 1);
+ bo_gem->validate_index = -1;
+ bo_gem->used_as_reloc_target = false;
+ bo_gem->has_error = false;
+ bo_gem->reusable = true;
+
+ drm_bacon_bo_gem_set_in_aperture_size(bufmgr_gem, bo_gem, alignment);
+ pthread_mutex_unlock(&bufmgr_gem->lock);
+
+ DBG("bo_create: buf %d (%s) %ldb\n",
+ bo_gem->gem_handle, bo_gem->name, size);
+
+ return &bo_gem->bo;
+
+err_free:
+ drm_bacon_gem_bo_free(&bo_gem->bo);
+err:
+ pthread_mutex_unlock(&bufmgr_gem->lock);
+ return NULL;
+}
+
+static drm_bacon_bo *
+drm_bacon_gem_bo_alloc_for_render(drm_bacon_bufmgr *bufmgr,
+ const char *name,
+ unsigned long size,
+ unsigned int alignment)
+{
+ return drm_bacon_gem_bo_alloc_internal(bufmgr, name, size,
+ BO_ALLOC_FOR_RENDER,
+ I915_TILING_NONE, 0,
+ alignment);
+}
+
+static drm_bacon_bo *
+drm_bacon_gem_bo_alloc(drm_bacon_bufmgr *bufmgr,
+ const char *name,
+ unsigned long size,
+ unsigned int alignment)
+{
+ return drm_bacon_gem_bo_alloc_internal(bufmgr, name, size, 0,
+ I915_TILING_NONE, 0, 0);
+}
+
+static drm_bacon_bo *
+drm_bacon_gem_bo_alloc_tiled(drm_bacon_bufmgr *bufmgr, const char *name,
+ int x, int y, int cpp, uint32_t *tiling_mode,
+ unsigned long *pitch, unsigned long flags)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem = (drm_bacon_bufmgr_gem *)bufmgr;
+ unsigned long size, stride;
+ uint32_t tiling;
+
+ do {
+ unsigned long aligned_y, height_alignment;
+
+ tiling = *tiling_mode;
+
+ /* If we're tiled, our allocations are in 8 or 32-row blocks,
+ * so failure to align our height means that we won't allocate
+ * enough pages.
+ *
+ * If we're untiled, we still have to align to 2 rows high
+ * because the data port accesses 2x2 blocks even if the
+ * bottom row isn't to be rendered, so failure to align means
+ * we could walk off the end of the GTT and fault. This is
+ * documented on 965, and may be the case on older chipsets
+ * too so we try to be careful.
+ */
+ aligned_y = y;
+ height_alignment = 2;
+
+ if (tiling == I915_TILING_X)
+ height_alignment = 8;
+ else if (tiling == I915_TILING_Y)
+ height_alignment = 32;
+ aligned_y = ALIGN(y, height_alignment);
+
+ stride = x * cpp;
+ stride = drm_bacon_gem_bo_tile_pitch(bufmgr_gem, stride, tiling_mode);
+ size = stride * aligned_y;
+ size = drm_bacon_gem_bo_tile_size(bufmgr_gem, size, tiling_mode);
+ } while (*tiling_mode != tiling);
+ *pitch = stride;
+
+ if (tiling == I915_TILING_NONE)
+ stride = 0;
+
+ return drm_bacon_gem_bo_alloc_internal(bufmgr, name, size, flags,
+ tiling, stride, 0);
+}
+
+static drm_bacon_bo *
+drm_bacon_gem_bo_alloc_userptr(drm_bacon_bufmgr *bufmgr,
+ const char *name,
+ void *addr,
+ uint32_t tiling_mode,
+ uint32_t stride,
+ unsigned long size,
+ unsigned long flags)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem = (drm_bacon_bufmgr_gem *) bufmgr;
+ drm_bacon_bo_gem *bo_gem;
+ int ret;
+ struct drm_i915_gem_userptr userptr;
+
+ /* Tiling with userptr surfaces is not supported
+ * on all hardware so refuse it for time being.
+ */
+ if (tiling_mode != I915_TILING_NONE)
+ return NULL;
+
+ bo_gem = calloc(1, sizeof(*bo_gem));
+ if (!bo_gem)
+ return NULL;
+
+ p_atomic_set(&bo_gem->refcount, 1);
+ list_inithead(&bo_gem->vma_list);
+
+ bo_gem->bo.size = size;
+
+ memclear(userptr);
+ userptr.user_ptr = (__u64)((unsigned long)addr);
+ userptr.user_size = size;
+ userptr.flags = flags;
+
+ ret = drmIoctl(bufmgr_gem->fd,
+ DRM_IOCTL_I915_GEM_USERPTR,
+ &userptr);
+ if (ret != 0) {
+ DBG("bo_create_userptr: "
+ "ioctl failed with user ptr %p size 0x%lx, "
+ "user flags 0x%lx\n", addr, size, flags);
+ free(bo_gem);
+ return NULL;
+ }
+
+ pthread_mutex_lock(&bufmgr_gem->lock);
+
+ bo_gem->gem_handle = userptr.handle;
+ bo_gem->bo.handle = bo_gem->gem_handle;
+ bo_gem->bo.bufmgr = bufmgr;
+ bo_gem->is_userptr = true;
+ bo_gem->bo.virtual = addr;
+ /* Save the address provided by user */
+ bo_gem->user_virtual = addr;
+ bo_gem->tiling_mode = I915_TILING_NONE;
+ bo_gem->swizzle_mode = I915_BIT_6_SWIZZLE_NONE;
+ bo_gem->stride = 0;
+
+ HASH_ADD(handle_hh, bufmgr_gem->handle_table,
+ gem_handle, sizeof(bo_gem->gem_handle),
+ bo_gem);
+
+ bo_gem->name = name;
+ bo_gem->validate_index = -1;
+ bo_gem->used_as_reloc_target = false;
+ bo_gem->has_error = false;
+ bo_gem->reusable = false;
+
+ drm_bacon_bo_gem_set_in_aperture_size(bufmgr_gem, bo_gem, 0);
+ pthread_mutex_unlock(&bufmgr_gem->lock);
+
+ DBG("bo_create_userptr: "
+ "ptr %p buf %d (%s) size %ldb, stride 0x%x, tile mode %d\n",
+ addr, bo_gem->gem_handle, bo_gem->name,
+ size, stride, tiling_mode);
+
+ return &bo_gem->bo;
+}
+
+static bool
+has_userptr(drm_bacon_bufmgr_gem *bufmgr_gem)
+{
+ int ret;
+ void *ptr;
+ long pgsz;
+ struct drm_i915_gem_userptr userptr;
+
+ pgsz = sysconf(_SC_PAGESIZE);
+ assert(pgsz > 0);
+
+ ret = posix_memalign(&ptr, pgsz, pgsz);
+ if (ret) {
+ DBG("Failed to get a page (%ld) for userptr detection!\n",
+ pgsz);
+ return false;
+ }
+
+ memclear(userptr);
+ userptr.user_ptr = (__u64)(unsigned long)ptr;
+ userptr.user_size = pgsz;
+
+retry:
+ ret = drmIoctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_USERPTR, &userptr);
+ if (ret) {
+ if (errno == ENODEV && userptr.flags == 0) {
+ userptr.flags = I915_USERPTR_UNSYNCHRONIZED;
+ goto retry;
+ }
+ free(ptr);
+ return false;
+ }
+
+ /* We don't release the userptr bo here as we want to keep the
+ * kernel mm tracking alive for our lifetime. The first time we
+ * create a userptr object the kernel has to install a mmu_notifer
+ * which is a heavyweight operation (e.g. it requires taking all
+ * mm_locks and stop_machine()).
+ */
+
+ bufmgr_gem->userptr_active.ptr = ptr;
+ bufmgr_gem->userptr_active.handle = userptr.handle;
+
+ return true;
+}
+
+static drm_bacon_bo *
+check_bo_alloc_userptr(drm_bacon_bufmgr *bufmgr,
+ const char *name,
+ void *addr,
+ uint32_t tiling_mode,
+ uint32_t stride,
+ unsigned long size,
+ unsigned long flags)
+{
+ if (has_userptr((drm_bacon_bufmgr_gem *)bufmgr))
+ bufmgr->bo_alloc_userptr = drm_bacon_gem_bo_alloc_userptr;
+ else
+ bufmgr->bo_alloc_userptr = NULL;
+
+ return drm_bacon_bo_alloc_userptr(bufmgr, name, addr,
+ tiling_mode, stride, size, flags);
+}
+
+/**
+ * Returns a drm_bacon_bo wrapping the given buffer object handle.
+ *
+ * This can be used when one application needs to pass a buffer object
+ * to another.
+ */
+drm_bacon_bo *
+drm_bacon_bo_gem_create_from_name(drm_bacon_bufmgr *bufmgr,
+ const char *name,
+ unsigned int handle)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem = (drm_bacon_bufmgr_gem *) bufmgr;
+ drm_bacon_bo_gem *bo_gem;
+ int ret;
+ struct drm_gem_open open_arg;
+ struct drm_i915_gem_get_tiling get_tiling;
+
+ /* At the moment most applications only have a few named bo.
+ * For instance, in a DRI client only the render buffers passed
+ * between X and the client are named. And since X returns the
+ * alternating names for the front/back buffer a linear search
+ * provides a sufficiently fast match.
+ */
+ pthread_mutex_lock(&bufmgr_gem->lock);
+ HASH_FIND(name_hh, bufmgr_gem->name_table,
+ &handle, sizeof(handle), bo_gem);
+ if (bo_gem) {
+ drm_bacon_gem_bo_reference(&bo_gem->bo);
+ goto out;
+ }
+
+ memclear(open_arg);
+ open_arg.name = handle;
+ ret = drmIoctl(bufmgr_gem->fd,
+ DRM_IOCTL_GEM_OPEN,
+ &open_arg);
+ if (ret != 0) {
+ DBG("Couldn't reference %s handle 0x%08x: %s\n",
+ name, handle, strerror(errno));
+ bo_gem = NULL;
+ goto out;
+ }
+ /* Now see if someone has used a prime handle to get this
+ * object from the kernel before by looking through the list
+ * again for a matching gem_handle
+ */
+ HASH_FIND(handle_hh, bufmgr_gem->handle_table,
+ &open_arg.handle, sizeof(open_arg.handle), bo_gem);
+ if (bo_gem) {
+ drm_bacon_gem_bo_reference(&bo_gem->bo);
+ goto out;
+ }
+
+ bo_gem = calloc(1, sizeof(*bo_gem));
+ if (!bo_gem)
+ goto out;
+
+ p_atomic_set(&bo_gem->refcount, 1);
+ list_inithead(&bo_gem->vma_list);
+
+ bo_gem->bo.size = open_arg.size;
+ bo_gem->bo.offset = 0;
+ bo_gem->bo.offset64 = 0;
+ bo_gem->bo.virtual = NULL;
+ bo_gem->bo.bufmgr = bufmgr;
+ bo_gem->name = name;
+ bo_gem->validate_index = -1;
+ bo_gem->gem_handle = open_arg.handle;
+ bo_gem->bo.handle = open_arg.handle;
+ bo_gem->global_name = handle;
+ bo_gem->reusable = false;
+
+ HASH_ADD(handle_hh, bufmgr_gem->handle_table,
+ gem_handle, sizeof(bo_gem->gem_handle), bo_gem);
+ HASH_ADD(name_hh, bufmgr_gem->name_table,
+ global_name, sizeof(bo_gem->global_name), bo_gem);
+
+ memclear(get_tiling);
+ get_tiling.handle = bo_gem->gem_handle;
+ ret = drmIoctl(bufmgr_gem->fd,
+ DRM_IOCTL_I915_GEM_GET_TILING,
+ &get_tiling);
+ if (ret != 0)
+ goto err_unref;
+
+ bo_gem->tiling_mode = get_tiling.tiling_mode;
+ bo_gem->swizzle_mode = get_tiling.swizzle_mode;
+ /* XXX stride is unknown */
+ drm_bacon_bo_gem_set_in_aperture_size(bufmgr_gem, bo_gem, 0);
+ DBG("bo_create_from_handle: %d (%s)\n", handle, bo_gem->name);
+
+out:
+ pthread_mutex_unlock(&bufmgr_gem->lock);
+ return &bo_gem->bo;
+
+err_unref:
+ drm_bacon_gem_bo_free(&bo_gem->bo);
+ pthread_mutex_unlock(&bufmgr_gem->lock);
+ return NULL;
+}
+
+static void
+drm_bacon_gem_bo_free(drm_bacon_bo *bo)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem = (drm_bacon_bufmgr_gem *) bo->bufmgr;
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+ struct drm_gem_close close;
+ int ret;
+
+ list_del(&bo_gem->vma_list);
+ if (bo_gem->mem_virtual) {
+ VG(VALGRIND_FREELIKE_BLOCK(bo_gem->mem_virtual, 0));
+ drm_munmap(bo_gem->mem_virtual, bo_gem->bo.size);
+ bufmgr_gem->vma_count--;
+ }
+ if (bo_gem->wc_virtual) {
+ VG(VALGRIND_FREELIKE_BLOCK(bo_gem->wc_virtual, 0));
+ drm_munmap(bo_gem->wc_virtual, bo_gem->bo.size);
+ bufmgr_gem->vma_count--;
+ }
+ if (bo_gem->gtt_virtual) {
+ drm_munmap(bo_gem->gtt_virtual, bo_gem->bo.size);
+ bufmgr_gem->vma_count--;
+ }
+
+ if (bo_gem->global_name)
+ HASH_DELETE(name_hh, bufmgr_gem->name_table, bo_gem);
+ HASH_DELETE(handle_hh, bufmgr_gem->handle_table, bo_gem);
+
+ /* Close this object */
+ memclear(close);
+ close.handle = bo_gem->gem_handle;
+ ret = drmIoctl(bufmgr_gem->fd, DRM_IOCTL_GEM_CLOSE, &close);
+ if (ret != 0) {
+ DBG("DRM_IOCTL_GEM_CLOSE %d failed (%s): %s\n",
+ bo_gem->gem_handle, bo_gem->name, strerror(errno));
+ }
+ free(bo);
+}
+
+static void
+drm_bacon_gem_bo_mark_mmaps_incoherent(drm_bacon_bo *bo)
+{
+#if HAVE_VALGRIND
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+
+ if (bo_gem->mem_virtual)
+ VALGRIND_MAKE_MEM_NOACCESS(bo_gem->mem_virtual, bo->size);
+
+ if (bo_gem->wc_virtual)
+ VALGRIND_MAKE_MEM_NOACCESS(bo_gem->wc_virtual, bo->size);
+
+ if (bo_gem->gtt_virtual)
+ VALGRIND_MAKE_MEM_NOACCESS(bo_gem->gtt_virtual, bo->size);
+#endif
+}
+
+/** Frees all cached buffers significantly older than @time. */
+static void
+drm_bacon_gem_cleanup_bo_cache(drm_bacon_bufmgr_gem *bufmgr_gem, time_t time)
+{
+ int i;
+
+ if (bufmgr_gem->time == time)
+ return;
+
+ for (i = 0; i < bufmgr_gem->num_buckets; i++) {
+ struct drm_bacon_gem_bo_bucket *bucket =
+ &bufmgr_gem->cache_bucket[i];
+
+ while (!list_empty(&bucket->head)) {
+ drm_bacon_bo_gem *bo_gem;
+
+ bo_gem = LIST_ENTRY(drm_bacon_bo_gem,
+ bucket->head.next, head);
+ if (time - bo_gem->free_time <= 1)
+ break;
+
+ list_del(&bo_gem->head);
+
+ drm_bacon_gem_bo_free(&bo_gem->bo);
+ }
+ }
+
+ bufmgr_gem->time = time;
+}
+
+static void drm_bacon_gem_bo_purge_vma_cache(drm_bacon_bufmgr_gem *bufmgr_gem)
+{
+ int limit;
+
+ DBG("%s: cached=%d, open=%d, limit=%d\n", __FUNCTION__,
+ bufmgr_gem->vma_count, bufmgr_gem->vma_open, bufmgr_gem->vma_max);
+
+ if (bufmgr_gem->vma_max < 0)
+ return;
+
+ /* We may need to evict a few entries in order to create new mmaps */
+ limit = bufmgr_gem->vma_max - 2*bufmgr_gem->vma_open;
+ if (limit < 0)
+ limit = 0;
+
+ while (bufmgr_gem->vma_count > limit) {
+ drm_bacon_bo_gem *bo_gem;
+
+ bo_gem = LIST_ENTRY(drm_bacon_bo_gem,
+ bufmgr_gem->vma_cache.next,
+ vma_list);
+ assert(bo_gem->map_count == 0);
+ list_delinit(&bo_gem->vma_list);
+
+ if (bo_gem->mem_virtual) {
+ drm_munmap(bo_gem->mem_virtual, bo_gem->bo.size);
+ bo_gem->mem_virtual = NULL;
+ bufmgr_gem->vma_count--;
+ }
+ if (bo_gem->wc_virtual) {
+ drm_munmap(bo_gem->wc_virtual, bo_gem->bo.size);
+ bo_gem->wc_virtual = NULL;
+ bufmgr_gem->vma_count--;
+ }
+ if (bo_gem->gtt_virtual) {
+ drm_munmap(bo_gem->gtt_virtual, bo_gem->bo.size);
+ bo_gem->gtt_virtual = NULL;
+ bufmgr_gem->vma_count--;
+ }
+ }
+}
+
+static void drm_bacon_gem_bo_close_vma(drm_bacon_bufmgr_gem *bufmgr_gem,
+ drm_bacon_bo_gem *bo_gem)
+{
+ bufmgr_gem->vma_open--;
+ list_addtail(&bo_gem->vma_list, &bufmgr_gem->vma_cache);
+ if (bo_gem->mem_virtual)
+ bufmgr_gem->vma_count++;
+ if (bo_gem->wc_virtual)
+ bufmgr_gem->vma_count++;
+ if (bo_gem->gtt_virtual)
+ bufmgr_gem->vma_count++;
+ drm_bacon_gem_bo_purge_vma_cache(bufmgr_gem);
+}
+
+static void drm_bacon_gem_bo_open_vma(drm_bacon_bufmgr_gem *bufmgr_gem,
+ drm_bacon_bo_gem *bo_gem)
+{
+ bufmgr_gem->vma_open++;
+ list_del(&bo_gem->vma_list);
+ if (bo_gem->mem_virtual)
+ bufmgr_gem->vma_count--;
+ if (bo_gem->wc_virtual)
+ bufmgr_gem->vma_count--;
+ if (bo_gem->gtt_virtual)
+ bufmgr_gem->vma_count--;
+ drm_bacon_gem_bo_purge_vma_cache(bufmgr_gem);
+}
+
+static void
+drm_bacon_gem_bo_unreference_final(drm_bacon_bo *bo, time_t time)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem = (drm_bacon_bufmgr_gem *) bo->bufmgr;
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+ struct drm_bacon_gem_bo_bucket *bucket;
+ int i;
+
+ /* Unreference all the target buffers */
+ for (i = 0; i < bo_gem->reloc_count; i++) {
+ if (bo_gem->reloc_target_info[i].bo != bo) {
+ drm_bacon_gem_bo_unreference_locked_timed(bo_gem->
+ reloc_target_info[i].bo,
+ time);
+ }
+ }
+ for (i = 0; i < bo_gem->softpin_target_count; i++)
+ drm_bacon_gem_bo_unreference_locked_timed(bo_gem->softpin_target[i],
+ time);
+ bo_gem->kflags = 0;
+ bo_gem->reloc_count = 0;
+ bo_gem->used_as_reloc_target = false;
+ bo_gem->softpin_target_count = 0;
+
+ DBG("bo_unreference final: %d (%s)\n",
+ bo_gem->gem_handle, bo_gem->name);
+
+ /* release memory associated with this object */
+ if (bo_gem->reloc_target_info) {
+ free(bo_gem->reloc_target_info);
+ bo_gem->reloc_target_info = NULL;
+ }
+ if (bo_gem->relocs) {
+ free(bo_gem->relocs);
+ bo_gem->relocs = NULL;
+ }
+ if (bo_gem->softpin_target) {
+ free(bo_gem->softpin_target);
+ bo_gem->softpin_target = NULL;
+ bo_gem->softpin_target_size = 0;
+ }
+
+ /* Clear any left-over mappings */
+ if (bo_gem->map_count) {
+ DBG("bo freed with non-zero map-count %d\n", bo_gem->map_count);
+ bo_gem->map_count = 0;
+ drm_bacon_gem_bo_close_vma(bufmgr_gem, bo_gem);
+ drm_bacon_gem_bo_mark_mmaps_incoherent(bo);
+ }
+
+ bucket = drm_bacon_gem_bo_bucket_for_size(bufmgr_gem, bo->size);
+ /* Put the buffer into our internal cache for reuse if we can. */
+ if (bufmgr_gem->bo_reuse && bo_gem->reusable && bucket != NULL &&
+ drm_bacon_gem_bo_madvise_internal(bufmgr_gem, bo_gem,
+ I915_MADV_DONTNEED)) {
+ bo_gem->free_time = time;
+
+ bo_gem->name = NULL;
+ bo_gem->validate_index = -1;
+
+ list_addtail(&bo_gem->head, &bucket->head);
+ } else {
+ drm_bacon_gem_bo_free(bo);
+ }
+}
+
+static void drm_bacon_gem_bo_unreference_locked_timed(drm_bacon_bo *bo,
+ time_t time)
+{
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+
+ assert(p_atomic_read(&bo_gem->refcount) > 0);
+ if (p_atomic_dec_zero(&bo_gem->refcount))
+ drm_bacon_gem_bo_unreference_final(bo, time);
+}
+
+static void drm_bacon_gem_bo_unreference(drm_bacon_bo *bo)
+{
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+
+ assert(p_atomic_read(&bo_gem->refcount) > 0);
+
+ if (atomic_add_unless(&bo_gem->refcount, -1, 1)) {
+ drm_bacon_bufmgr_gem *bufmgr_gem =
+ (drm_bacon_bufmgr_gem *) bo->bufmgr;
+ struct timespec time;
+
+ clock_gettime(CLOCK_MONOTONIC, &time);
+
+ pthread_mutex_lock(&bufmgr_gem->lock);
+
+ if (p_atomic_dec_zero(&bo_gem->refcount)) {
+ drm_bacon_gem_bo_unreference_final(bo, time.tv_sec);
+ drm_bacon_gem_cleanup_bo_cache(bufmgr_gem, time.tv_sec);
+ }
+
+ pthread_mutex_unlock(&bufmgr_gem->lock);
+ }
+}
+
+static int drm_bacon_gem_bo_map(drm_bacon_bo *bo, int write_enable)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem = (drm_bacon_bufmgr_gem *) bo->bufmgr;
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+ struct drm_i915_gem_set_domain set_domain;
+ int ret;
+
+ if (bo_gem->is_userptr) {
+ /* Return the same user ptr */
+ bo->virtual = bo_gem->user_virtual;
+ return 0;
+ }
+
+ pthread_mutex_lock(&bufmgr_gem->lock);
+
+ if (bo_gem->map_count++ == 0)
+ drm_bacon_gem_bo_open_vma(bufmgr_gem, bo_gem);
+
+ if (!bo_gem->mem_virtual) {
+ struct drm_i915_gem_mmap mmap_arg;
+
+ DBG("bo_map: %d (%s), map_count=%d\n",
+ bo_gem->gem_handle, bo_gem->name, bo_gem->map_count);
+
+ memclear(mmap_arg);
+ mmap_arg.handle = bo_gem->gem_handle;
+ mmap_arg.size = bo->size;
+ ret = drmIoctl(bufmgr_gem->fd,
+ DRM_IOCTL_I915_GEM_MMAP,
+ &mmap_arg);
+ if (ret != 0) {
+ ret = -errno;
+ DBG("%s:%d: Error mapping buffer %d (%s): %s .\n",
+ __FILE__, __LINE__, bo_gem->gem_handle,
+ bo_gem->name, strerror(errno));
+ if (--bo_gem->map_count == 0)
+ drm_bacon_gem_bo_close_vma(bufmgr_gem, bo_gem);
+ pthread_mutex_unlock(&bufmgr_gem->lock);
+ return ret;
+ }
+ VG(VALGRIND_MALLOCLIKE_BLOCK(mmap_arg.addr_ptr, mmap_arg.size, 0, 1));
+ bo_gem->mem_virtual = (void *)(uintptr_t) mmap_arg.addr_ptr;
+ }
+ DBG("bo_map: %d (%s) -> %p\n", bo_gem->gem_handle, bo_gem->name,
+ bo_gem->mem_virtual);
+ bo->virtual = bo_gem->mem_virtual;
+
+ memclear(set_domain);
+ 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;
+ ret = drmIoctl(bufmgr_gem->fd,
+ DRM_IOCTL_I915_GEM_SET_DOMAIN,
+ &set_domain);
+ if (ret != 0) {
+ DBG("%s:%d: Error setting to CPU domain %d: %s\n",
+ __FILE__, __LINE__, bo_gem->gem_handle,
+ strerror(errno));
+ }
+
+ if (write_enable)
+ bo_gem->mapped_cpu_write = true;
+
+ drm_bacon_gem_bo_mark_mmaps_incoherent(bo);
+ VG(VALGRIND_MAKE_MEM_DEFINED(bo_gem->mem_virtual, bo->size));
+ pthread_mutex_unlock(&bufmgr_gem->lock);
+
+ return 0;
+}
+
+static int
+map_gtt(drm_bacon_bo *bo)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem = (drm_bacon_bufmgr_gem *) bo->bufmgr;
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+ int ret;
+
+ if (bo_gem->is_userptr)
+ return -EINVAL;
+
+ if (bo_gem->map_count++ == 0)
+ drm_bacon_gem_bo_open_vma(bufmgr_gem, bo_gem);
+
+ /* Get a mapping of the buffer if we haven't before. */
+ if (bo_gem->gtt_virtual == NULL) {
+ struct drm_i915_gem_mmap_gtt mmap_arg;
+
+ DBG("bo_map_gtt: mmap %d (%s), map_count=%d\n",
+ bo_gem->gem_handle, bo_gem->name, bo_gem->map_count);
+
+ memclear(mmap_arg);
+ mmap_arg.handle = bo_gem->gem_handle;
+
+ /* Get the fake offset back... */
+ ret = drmIoctl(bufmgr_gem->fd,
+ DRM_IOCTL_I915_GEM_MMAP_GTT,
+ &mmap_arg);
+ if (ret != 0) {
+ ret = -errno;
+ DBG("%s:%d: Error preparing buffer map %d (%s): %s .\n",
+ __FILE__, __LINE__,
+ bo_gem->gem_handle, bo_gem->name,
+ strerror(errno));
+ if (--bo_gem->map_count == 0)
+ drm_bacon_gem_bo_close_vma(bufmgr_gem, bo_gem);
+ return ret;
+ }
+
+ /* and mmap it */
+ bo_gem->gtt_virtual = drm_mmap(0, bo->size, PROT_READ | PROT_WRITE,
+ MAP_SHARED, bufmgr_gem->fd,
+ mmap_arg.offset);
+ if (bo_gem->gtt_virtual == MAP_FAILED) {
+ bo_gem->gtt_virtual = NULL;
+ ret = -errno;
+ DBG("%s:%d: Error mapping buffer %d (%s): %s .\n",
+ __FILE__, __LINE__,
+ bo_gem->gem_handle, bo_gem->name,
+ strerror(errno));
+ if (--bo_gem->map_count == 0)
+ drm_bacon_gem_bo_close_vma(bufmgr_gem, bo_gem);
+ return ret;
+ }
+ }
+
+ bo->virtual = bo_gem->gtt_virtual;
+
+ DBG("bo_map_gtt: %d (%s) -> %p\n", bo_gem->gem_handle, bo_gem->name,
+ bo_gem->gtt_virtual);
+
+ return 0;
+}
+
+int
+drm_bacon_gem_bo_map_gtt(drm_bacon_bo *bo)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem = (drm_bacon_bufmgr_gem *) bo->bufmgr;
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+ struct drm_i915_gem_set_domain set_domain;
+ int ret;
+
+ pthread_mutex_lock(&bufmgr_gem->lock);
+
+ ret = map_gtt(bo);
+ if (ret) {
+ pthread_mutex_unlock(&bufmgr_gem->lock);
+ return ret;
+ }
+
+ /* Now move it to the GTT domain so that the GPU and CPU
+ * caches are flushed and the GPU isn't actively using the
+ * buffer.
+ *
+ * The pagefault handler does this domain change for us when
+ * it has unbound the BO from the GTT, but it's up to us to
+ * tell it when we're about to use things if we had done
+ * rendering and it still happens to be bound to the GTT.
+ */
+ memclear(set_domain);
+ set_domain.handle = bo_gem->gem_handle;
+ set_domain.read_domains = I915_GEM_DOMAIN_GTT;
+ set_domain.write_domain = I915_GEM_DOMAIN_GTT;
+ ret = drmIoctl(bufmgr_gem->fd,
+ DRM_IOCTL_I915_GEM_SET_DOMAIN,
+ &set_domain);
+ if (ret != 0) {
+ DBG("%s:%d: Error setting domain %d: %s\n",
+ __FILE__, __LINE__, bo_gem->gem_handle,
+ strerror(errno));
+ }
+
+ drm_bacon_gem_bo_mark_mmaps_incoherent(bo);
+ VG(VALGRIND_MAKE_MEM_DEFINED(bo_gem->gtt_virtual, bo->size));
+ pthread_mutex_unlock(&bufmgr_gem->lock);
+
+ return 0;
+}
+
+/**
+ * Performs a mapping of the buffer object like the normal GTT
+ * mapping, but avoids waiting for the GPU to be done reading from or
+ * rendering to the buffer.
+ *
+ * This is used in the implementation of GL_ARB_map_buffer_range: The
+ * user asks to create a buffer, then does a mapping, fills some
+ * space, runs a drawing command, then asks to map it again without
+ * synchronizing because it guarantees that it won't write over the
+ * data that the GPU is busy using (or, more specifically, that if it
+ * does write over the data, it acknowledges that rendering is
+ * undefined).
+ */
+
+int
+drm_bacon_gem_bo_map_unsynchronized(drm_bacon_bo *bo)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem = (drm_bacon_bufmgr_gem *) bo->bufmgr;
+#ifdef HAVE_VALGRIND
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+#endif
+ int ret;
+
+ /* If the CPU cache isn't coherent with the GTT, then use a
+ * regular synchronized mapping. The problem is that we don't
+ * track where the buffer was last used on the CPU side in
+ * terms of drm_bacon_bo_map vs drm_bacon_gem_bo_map_gtt, so
+ * we would potentially corrupt the buffer even when the user
+ * does reasonable things.
+ */
+ if (!bufmgr_gem->has_llc)
+ return drm_bacon_gem_bo_map_gtt(bo);
+
+ pthread_mutex_lock(&bufmgr_gem->lock);
+
+ ret = map_gtt(bo);
+ if (ret == 0) {
+ drm_bacon_gem_bo_mark_mmaps_incoherent(bo);
+ VG(VALGRIND_MAKE_MEM_DEFINED(bo_gem->gtt_virtual, bo->size));
+ }
+
+ pthread_mutex_unlock(&bufmgr_gem->lock);
+
+ return ret;
+}
+
+static int drm_bacon_gem_bo_unmap(drm_bacon_bo *bo)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem;
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+ int ret = 0;
+
+ if (bo == NULL)
+ return 0;
+
+ if (bo_gem->is_userptr)
+ return 0;
+
+ bufmgr_gem = (drm_bacon_bufmgr_gem *) bo->bufmgr;
+
+ pthread_mutex_lock(&bufmgr_gem->lock);
+
+ if (bo_gem->map_count <= 0) {
+ DBG("attempted to unmap an unmapped bo\n");
+ pthread_mutex_unlock(&bufmgr_gem->lock);
+ /* Preserve the old behaviour of just treating this as a
+ * no-op rather than reporting the error.
+ */
+ return 0;
+ }
+
+ if (bo_gem->mapped_cpu_write) {
+ struct drm_i915_gem_sw_finish sw_finish;
+
+ /* Cause a flush to happen if the buffer's pinned for
+ * scanout, so the results show up in a timely manner.
+ * Unlike GTT set domains, this only does work if the
+ * buffer should be scanout-related.
+ */
+ memclear(sw_finish);
+ sw_finish.handle = bo_gem->gem_handle;
+ ret = drmIoctl(bufmgr_gem->fd,
+ DRM_IOCTL_I915_GEM_SW_FINISH,
+ &sw_finish);
+ ret = ret == -1 ? -errno : 0;
+
+ bo_gem->mapped_cpu_write = false;
+ }
+
+ /* We need to unmap after every innovation as we cannot track
+ * an open vma for every bo as that will exhaust the system
+ * limits and cause later failures.
+ */
+ if (--bo_gem->map_count == 0) {
+ drm_bacon_gem_bo_close_vma(bufmgr_gem, bo_gem);
+ drm_bacon_gem_bo_mark_mmaps_incoherent(bo);
+ bo->virtual = NULL;
+ }
+ pthread_mutex_unlock(&bufmgr_gem->lock);
+
+ return ret;
+}
+
+static int
+drm_bacon_gem_bo_subdata(drm_bacon_bo *bo, unsigned long offset,
+ unsigned long size, const void *data)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem = (drm_bacon_bufmgr_gem *) bo->bufmgr;
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+ struct drm_i915_gem_pwrite pwrite;
+ int ret;
+
+ if (bo_gem->is_userptr)
+ return -EINVAL;
+
+ memclear(pwrite);
+ pwrite.handle = bo_gem->gem_handle;
+ pwrite.offset = offset;
+ pwrite.size = size;
+ pwrite.data_ptr = (uint64_t) (uintptr_t) data;
+ ret = drmIoctl(bufmgr_gem->fd,
+ DRM_IOCTL_I915_GEM_PWRITE,
+ &pwrite);
+ if (ret != 0) {
+ ret = -errno;
+ DBG("%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 ret;
+}
+
+static int
+drm_bacon_gem_bo_get_subdata(drm_bacon_bo *bo, unsigned long offset,
+ unsigned long size, void *data)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem = (drm_bacon_bufmgr_gem *) bo->bufmgr;
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+ struct drm_i915_gem_pread pread;
+ int ret;
+
+ if (bo_gem->is_userptr)
+ return -EINVAL;
+
+ memclear(pread);
+ pread.handle = bo_gem->gem_handle;
+ pread.offset = offset;
+ pread.size = size;
+ pread.data_ptr = (uint64_t) (uintptr_t) data;
+ ret = drmIoctl(bufmgr_gem->fd,
+ DRM_IOCTL_I915_GEM_PREAD,
+ &pread);
+ if (ret != 0) {
+ ret = -errno;
+ DBG("%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 ret;
+}
+
+/** Waits for all GPU rendering with the object to have completed. */
+static void
+drm_bacon_gem_bo_wait_rendering(drm_bacon_bo *bo)
+{
+ drm_bacon_gem_bo_start_gtt_access(bo, 1);
+}
+
+/**
+ * Waits on a BO for the given amount of time.
+ *
+ * @bo: buffer object to wait for
+ * @timeout_ns: amount of time to wait in nanoseconds.
+ * If value is less than 0, an infinite wait will occur.
+ *
+ * Returns 0 if the wait was successful ie. the last batch referencing the
+ * object has completed within the allotted time. Otherwise some negative return
+ * value describes the error. Of particular interest is -ETIME when the wait has
+ * failed to yield the desired result.
+ *
+ * Similar to drm_bacon_gem_bo_wait_rendering except a timeout parameter allows
+ * the operation to give up after a certain amount of time. Another subtle
+ * difference is the internal locking semantics are different (this variant does
+ * not hold the lock for the duration of the wait). This makes the wait subject
+ * to a larger userspace race window.
+ *
+ * The implementation shall wait until the object is no longer actively
+ * referenced within a batch buffer at the time of the call. The wait will
+ * not guarantee that the buffer is re-issued via another thread, or an flinked
+ * handle. Userspace must make sure this race does not occur if such precision
+ * is important.
+ *
+ * Note that some kernels have broken the inifite wait for negative values
+ * promise, upgrade to latest stable kernels if this is the case.
+ */
+int
+drm_bacon_gem_bo_wait(drm_bacon_bo *bo, int64_t timeout_ns)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem = (drm_bacon_bufmgr_gem *) bo->bufmgr;
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+ struct drm_i915_gem_wait wait;
+ int ret;
+
+ if (!bufmgr_gem->has_wait_timeout) {
+ DBG("%s:%d: Timed wait is not supported. Falling back to "
+ "infinite wait\n", __FILE__, __LINE__);
+ if (timeout_ns) {
+ drm_bacon_gem_bo_wait_rendering(bo);
+ return 0;
+ } else {
+ return drm_bacon_gem_bo_busy(bo) ? -ETIME : 0;
+ }
+ }
+
+ memclear(wait);
+ wait.bo_handle = bo_gem->gem_handle;
+ wait.timeout_ns = timeout_ns;
+ ret = drmIoctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_WAIT, &wait);
+ if (ret == -1)
+ return -errno;
+
+ return ret;
+}
+
+/**
+ * Sets the object to the GTT read and possibly write domain, used by the X
+ * 2D driver in the absence of kernel support to do drm_bacon_gem_bo_map_gtt().
+ *
+ * In combination with drm_bacon_gem_bo_pin() and manual fence management, we
+ * can do tiled pixmaps this way.
+ */
+void
+drm_bacon_gem_bo_start_gtt_access(drm_bacon_bo *bo, int write_enable)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem = (drm_bacon_bufmgr_gem *) bo->bufmgr;
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+ struct drm_i915_gem_set_domain set_domain;
+ int ret;
+
+ memclear(set_domain);
+ set_domain.handle = bo_gem->gem_handle;
+ set_domain.read_domains = I915_GEM_DOMAIN_GTT;
+ set_domain.write_domain = write_enable ? I915_GEM_DOMAIN_GTT : 0;
+ ret = drmIoctl(bufmgr_gem->fd,
+ DRM_IOCTL_I915_GEM_SET_DOMAIN,
+ &set_domain);
+ if (ret != 0) {
+ DBG("%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
+drm_bacon_bufmgr_gem_destroy(drm_bacon_bufmgr *bufmgr)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem = (drm_bacon_bufmgr_gem *) bufmgr;
+ struct drm_gem_close close_bo;
+ int i, ret;
+
+ free(bufmgr_gem->exec2_objects);
+ free(bufmgr_gem->exec_bos);
+
+ pthread_mutex_destroy(&bufmgr_gem->lock);
+
+ /* Free any cached buffer objects we were going to reuse */
+ for (i = 0; i < bufmgr_gem->num_buckets; i++) {
+ struct drm_bacon_gem_bo_bucket *bucket =
+ &bufmgr_gem->cache_bucket[i];
+ drm_bacon_bo_gem *bo_gem;
+
+ while (!list_empty(&bucket->head)) {
+ bo_gem = LIST_ENTRY(drm_bacon_bo_gem,
+ bucket->head.next, head);
+ list_del(&bo_gem->head);
+
+ drm_bacon_gem_bo_free(&bo_gem->bo);
+ }
+ }
+
+ /* Release userptr bo kept hanging around for optimisation. */
+ if (bufmgr_gem->userptr_active.ptr) {
+ memclear(close_bo);
+ close_bo.handle = bufmgr_gem->userptr_active.handle;
+ ret = drmIoctl(bufmgr_gem->fd, DRM_IOCTL_GEM_CLOSE, &close_bo);
+ free(bufmgr_gem->userptr_active.ptr);
+ if (ret)
+ fprintf(stderr,
+ "Failed to release test userptr object! (%d) "
+ "i915 kernel driver may not be sane!\n", errno);
+ }
+
+ 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
+do_bo_emit_reloc(drm_bacon_bo *bo, uint32_t offset,
+ drm_bacon_bo *target_bo, uint32_t target_offset,
+ uint32_t read_domains, uint32_t write_domain)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem = (drm_bacon_bufmgr_gem *) bo->bufmgr;
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+ drm_bacon_bo_gem *target_bo_gem = (drm_bacon_bo_gem *) target_bo;
+
+ if (bo_gem->has_error)
+ return -ENOMEM;
+
+ if (target_bo_gem->has_error) {
+ bo_gem->has_error = true;
+ return -ENOMEM;
+ }
+
+ /* Create a new relocation list if needed */
+ if (bo_gem->relocs == NULL && drm_bacon_setup_reloc_list(bo))
+ return -ENOMEM;
+
+ /* 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);
+
+ /* Make sure that we're not adding a reloc to something whose size has
+ * already been accounted for.
+ */
+ assert(!bo_gem->used_as_reloc_target);
+ if (target_bo_gem != bo_gem) {
+ target_bo_gem->used_as_reloc_target = true;
+ bo_gem->reloc_tree_size += target_bo_gem->reloc_tree_size;
+ }
+
+ bo_gem->reloc_target_info[bo_gem->reloc_count].bo = target_bo;
+ if (target_bo != bo)
+ drm_bacon_gem_bo_reference(target_bo);
+
+ bo_gem->relocs[bo_gem->reloc_count].offset = offset;
+ bo_gem->relocs[bo_gem->reloc_count].delta = target_offset;
+ 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->offset64;
+ bo_gem->reloc_count++;
+
+ return 0;
+}
+
+static int
+drm_bacon_gem_bo_add_softpin_target(drm_bacon_bo *bo, drm_bacon_bo *target_bo)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem = (drm_bacon_bufmgr_gem *) bo->bufmgr;
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+ drm_bacon_bo_gem *target_bo_gem = (drm_bacon_bo_gem *) target_bo;
+ if (bo_gem->has_error)
+ return -ENOMEM;
+
+ if (target_bo_gem->has_error) {
+ bo_gem->has_error = true;
+ return -ENOMEM;
+ }
+
+ if (!(target_bo_gem->kflags & EXEC_OBJECT_PINNED))
+ return -EINVAL;
+ if (target_bo_gem == bo_gem)
+ return -EINVAL;
+
+ if (bo_gem->softpin_target_count == bo_gem->softpin_target_size) {
+ int new_size = bo_gem->softpin_target_size * 2;
+ if (new_size == 0)
+ new_size = bufmgr_gem->max_relocs;
+
+ bo_gem->softpin_target = realloc(bo_gem->softpin_target, new_size *
+ sizeof(drm_bacon_bo *));
+ if (!bo_gem->softpin_target)
+ return -ENOMEM;
+
+ bo_gem->softpin_target_size = new_size;
+ }
+ bo_gem->softpin_target[bo_gem->softpin_target_count] = target_bo;
+ drm_bacon_gem_bo_reference(target_bo);
+ bo_gem->softpin_target_count++;
+
+ return 0;
+}
+
+static int
+drm_bacon_gem_bo_emit_reloc(drm_bacon_bo *bo, uint32_t offset,
+ drm_bacon_bo *target_bo, uint32_t target_offset,
+ uint32_t read_domains, uint32_t write_domain)
+{
+ drm_bacon_bo_gem *target_bo_gem = (drm_bacon_bo_gem *)target_bo;
+
+ if (target_bo_gem->kflags & EXEC_OBJECT_PINNED)
+ return drm_bacon_gem_bo_add_softpin_target(bo, target_bo);
+ else
+ return do_bo_emit_reloc(bo, offset, target_bo, target_offset,
+ read_domains, write_domain);
+}
+
+int
+drm_bacon_gem_bo_get_reloc_count(drm_bacon_bo *bo)
+{
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+
+ return bo_gem->reloc_count;
+}
+
+/**
+ * Removes existing relocation entries in the BO after "start".
+ *
+ * This allows a user to avoid a two-step process for state setup with
+ * counting up all the buffer objects and doing a
+ * drm_bacon_bufmgr_check_aperture_space() before emitting any of the
+ * relocations for the state setup. Instead, save the state of the
+ * batchbuffer including drm_bacon_gem_get_reloc_count(), emit all the
+ * state, and then check if it still fits in the aperture.
+ *
+ * Any further drm_bacon_bufmgr_check_aperture_space() queries
+ * involving this buffer in the tree are undefined after this call.
+ *
+ * This also removes all softpinned targets being referenced by the BO.
+ */
+void
+drm_bacon_gem_bo_clear_relocs(drm_bacon_bo *bo, int start)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem = (drm_bacon_bufmgr_gem *) bo->bufmgr;
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+ int i;
+ struct timespec time;
+
+ clock_gettime(CLOCK_MONOTONIC, &time);
+
+ assert(bo_gem->reloc_count >= start);
+
+ /* Unreference the cleared target buffers */
+ pthread_mutex_lock(&bufmgr_gem->lock);
+
+ for (i = start; i < bo_gem->reloc_count; i++) {
+ drm_bacon_bo_gem *target_bo_gem = (drm_bacon_bo_gem *) bo_gem->reloc_target_info[i].bo;
+ if (&target_bo_gem->bo != bo) {
+ drm_bacon_gem_bo_unreference_locked_timed(&target_bo_gem->bo,
+ time.tv_sec);
+ }
+ }
+ bo_gem->reloc_count = start;
+
+ for (i = 0; i < bo_gem->softpin_target_count; i++) {
+ drm_bacon_bo_gem *target_bo_gem = (drm_bacon_bo_gem *) bo_gem->softpin_target[i];
+ drm_bacon_gem_bo_unreference_locked_timed(&target_bo_gem->bo, time.tv_sec);
+ }
+ bo_gem->softpin_target_count = 0;
+
+ pthread_mutex_unlock(&bufmgr_gem->lock);
+
+}
+
+static void
+drm_bacon_gem_bo_process_reloc2(drm_bacon_bo *bo)
+{
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *)bo;
+ int i;
+
+ if (bo_gem->relocs == NULL && bo_gem->softpin_target == NULL)
+ return;
+
+ for (i = 0; i < bo_gem->reloc_count; i++) {
+ drm_bacon_bo *target_bo = bo_gem->reloc_target_info[i].bo;
+
+ if (target_bo == bo)
+ continue;
+
+ drm_bacon_gem_bo_mark_mmaps_incoherent(bo);
+
+ /* Continue walking the tree depth-first. */
+ drm_bacon_gem_bo_process_reloc2(target_bo);
+
+ /* Add the target to the validate list */
+ drm_bacon_add_validate_buffer2(target_bo);
+ }
+
+ for (i = 0; i < bo_gem->softpin_target_count; i++) {
+ drm_bacon_bo *target_bo = bo_gem->softpin_target[i];
+
+ if (target_bo == bo)
+ continue;
+
+ drm_bacon_gem_bo_mark_mmaps_incoherent(bo);
+ drm_bacon_gem_bo_process_reloc2(target_bo);
+ drm_bacon_add_validate_buffer2(target_bo);
+ }
+}
+
+static void
+drm_bacon_update_buffer_offsets2 (drm_bacon_bufmgr_gem *bufmgr_gem)
+{
+ int i;
+
+ for (i = 0; i < bufmgr_gem->exec_count; i++) {
+ drm_bacon_bo *bo = bufmgr_gem->exec_bos[i];
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *)bo;
+
+ /* Update the buffer offset */
+ if (bufmgr_gem->exec2_objects[i].offset != bo->offset64) {
+ /* If we're seeing softpinned object here it means that the kernel
+ * has relocated our object... Indicating a programming error
+ */
+ assert(!(bo_gem->kflags & EXEC_OBJECT_PINNED));
+ DBG("BO %d (%s) migrated: 0x%08x %08x -> 0x%08x %08x\n",
+ bo_gem->gem_handle, bo_gem->name,
+ upper_32_bits(bo->offset64),
+ lower_32_bits(bo->offset64),
+ upper_32_bits(bufmgr_gem->exec2_objects[i].offset),
+ lower_32_bits(bufmgr_gem->exec2_objects[i].offset));
+ bo->offset64 = bufmgr_gem->exec2_objects[i].offset;
+ bo->offset = bufmgr_gem->exec2_objects[i].offset;
+ }
+ }
+}
+
+static int
+do_exec2(drm_bacon_bo *bo, int used, drm_bacon_context *ctx,
+ drm_clip_rect_t *cliprects, int num_cliprects, int DR4,
+ int in_fence, int *out_fence,
+ unsigned int flags)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem = (drm_bacon_bufmgr_gem *)bo->bufmgr;
+ struct drm_i915_gem_execbuffer2 execbuf;
+ int ret = 0;
+ int i;
+
+ if (to_bo_gem(bo)->has_error)
+ return -ENOMEM;
+
+ switch (flags & 0x7) {
+ default:
+ return -EINVAL;
+ case I915_EXEC_BLT:
+ if (!bufmgr_gem->has_blt)
+ return -EINVAL;
+ break;
+ case I915_EXEC_BSD:
+ if (!bufmgr_gem->has_bsd)
+ return -EINVAL;
+ break;
+ case I915_EXEC_VEBOX:
+ if (!bufmgr_gem->has_vebox)
+ return -EINVAL;
+ break;
+ case I915_EXEC_RENDER:
+ case I915_EXEC_DEFAULT:
+ break;
+ }
+
+ pthread_mutex_lock(&bufmgr_gem->lock);
+ /* Update indices and set up the validate list. */
+ drm_bacon_gem_bo_process_reloc2(bo);
+
+ /* Add the batch buffer to the validation list. There are no relocations
+ * pointing to it.
+ */
+ drm_bacon_add_validate_buffer2(bo);
+
+ memclear(execbuf);
+ execbuf.buffers_ptr = (uintptr_t)bufmgr_gem->exec2_objects;
+ execbuf.buffer_count = bufmgr_gem->exec_count;
+ execbuf.batch_start_offset = 0;
+ execbuf.batch_len = used;
+ execbuf.cliprects_ptr = (uintptr_t)cliprects;
+ execbuf.num_cliprects = num_cliprects;
+ execbuf.DR1 = 0;
+ execbuf.DR4 = DR4;
+ execbuf.flags = flags;
+ if (ctx == NULL)
+ i915_execbuffer2_set_context_id(execbuf, 0);
+ else
+ i915_execbuffer2_set_context_id(execbuf, ctx->ctx_id);
+ execbuf.rsvd2 = 0;
+ if (in_fence != -1) {
+ execbuf.rsvd2 = in_fence;
+ execbuf.flags |= I915_EXEC_FENCE_IN;
+ }
+ if (out_fence != NULL) {
+ *out_fence = -1;
+ execbuf.flags |= I915_EXEC_FENCE_OUT;
+ }
+
+ if (bufmgr_gem->no_exec)
+ goto skip_execution;
+
+ ret = drmIoctl(bufmgr_gem->fd,
+ DRM_IOCTL_I915_GEM_EXECBUFFER2_WR,
+ &execbuf);
+ if (ret != 0) {
+ ret = -errno;
+ if (ret == -ENOSPC) {
+ DBG("Execbuffer fails to pin. "
+ "Estimate: %u. Actual: %u. Available: %u\n",
+ drm_bacon_gem_estimate_batch_space(bufmgr_gem->exec_bos,
+ bufmgr_gem->exec_count),
+ drm_bacon_gem_compute_batch_space(bufmgr_gem->exec_bos,
+ bufmgr_gem->exec_count),
+ (unsigned int) bufmgr_gem->gtt_size);
+ }
+ }
+ drm_bacon_update_buffer_offsets2(bufmgr_gem);
+
+ if (ret == 0 && out_fence != NULL)
+ *out_fence = execbuf.rsvd2 >> 32;
+
+skip_execution:
+ if (bufmgr_gem->bufmgr.debug)
+ drm_bacon_gem_dump_validation_list(bufmgr_gem);
+
+ for (i = 0; i < bufmgr_gem->exec_count; i++) {
+ drm_bacon_bo_gem *bo_gem = to_bo_gem(bufmgr_gem->exec_bos[i]);
+
+ bo_gem->idle = false;
+
+ /* Disconnect the buffer from the validate list */
+ bo_gem->validate_index = -1;
+ bufmgr_gem->exec_bos[i] = NULL;
+ }
+ bufmgr_gem->exec_count = 0;
+ pthread_mutex_unlock(&bufmgr_gem->lock);
+
+ return ret;
+}
+
+static int
+drm_bacon_gem_bo_exec2(drm_bacon_bo *bo, int used,
+ drm_clip_rect_t *cliprects, int num_cliprects,
+ int DR4)
+{
+ return do_exec2(bo, used, NULL, cliprects, num_cliprects, DR4,
+ -1, NULL, I915_EXEC_RENDER);
+}
+
+static int
+drm_bacon_gem_bo_mrb_exec2(drm_bacon_bo *bo, int used,
+ drm_clip_rect_t *cliprects, int num_cliprects, int DR4,
+ unsigned int flags)
+{
+ return do_exec2(bo, used, NULL, cliprects, num_cliprects, DR4,
+ -1, NULL, flags);
+}
+
+int
+drm_bacon_gem_bo_context_exec(drm_bacon_bo *bo, drm_bacon_context *ctx,
+ int used, unsigned int flags)
+{
+ return do_exec2(bo, used, ctx, NULL, 0, 0, -1, NULL, flags);
+}
+
+int
+drm_bacon_gem_bo_fence_exec(drm_bacon_bo *bo,
+ drm_bacon_context *ctx,
+ int used,
+ int in_fence,
+ int *out_fence,
+ unsigned int flags)
+{
+ return do_exec2(bo, used, ctx, NULL, 0, 0, in_fence, out_fence, flags);
+}
+
+static int
+drm_bacon_gem_bo_set_tiling_internal(drm_bacon_bo *bo,
+ uint32_t tiling_mode,
+ uint32_t stride)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem = (drm_bacon_bufmgr_gem *) bo->bufmgr;
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+ struct drm_i915_gem_set_tiling set_tiling;
+ int ret;
+
+ if (bo_gem->global_name == 0 &&
+ tiling_mode == bo_gem->tiling_mode &&
+ stride == bo_gem->stride)
+ return 0;
+
+ memset(&set_tiling, 0, sizeof(set_tiling));
+ do {
+ /* set_tiling is slightly broken and overwrites the
+ * input on the error path, so we have to open code
+ * rmIoctl.
+ */
+ set_tiling.handle = bo_gem->gem_handle;
+ set_tiling.tiling_mode = tiling_mode;
+ set_tiling.stride = stride;
+
+ ret = ioctl(bufmgr_gem->fd,
+ DRM_IOCTL_I915_GEM_SET_TILING,
+ &set_tiling);
+ } while (ret == -1 && (errno == EINTR || errno == EAGAIN));
+ if (ret == -1)
+ return -errno;
+
+ bo_gem->tiling_mode = set_tiling.tiling_mode;
+ bo_gem->swizzle_mode = set_tiling.swizzle_mode;
+ bo_gem->stride = set_tiling.stride;
+ return 0;
+}
+
+static int
+drm_bacon_gem_bo_set_tiling(drm_bacon_bo *bo, uint32_t * tiling_mode,
+ uint32_t stride)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem = (drm_bacon_bufmgr_gem *) bo->bufmgr;
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+ int ret;
+
+ /* Tiling with userptr surfaces is not supported
+ * on all hardware so refuse it for time being.
+ */
+ if (bo_gem->is_userptr)
+ return -EINVAL;
+
+ /* Linear buffers have no stride. By ensuring that we only ever use
+ * stride 0 with linear buffers, we simplify our code.
+ */
+ if (*tiling_mode == I915_TILING_NONE)
+ stride = 0;
+
+ ret = drm_bacon_gem_bo_set_tiling_internal(bo, *tiling_mode, stride);
+ if (ret == 0)
+ drm_bacon_bo_gem_set_in_aperture_size(bufmgr_gem, bo_gem, 0);
+
+ *tiling_mode = bo_gem->tiling_mode;
+ return ret;
+}
+
+static int
+drm_bacon_gem_bo_get_tiling(drm_bacon_bo *bo, uint32_t * tiling_mode,
+ uint32_t * swizzle_mode)
+{
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+
+ *tiling_mode = bo_gem->tiling_mode;
+ *swizzle_mode = bo_gem->swizzle_mode;
+ return 0;
+}
+
+static int
+drm_bacon_gem_bo_set_softpin_offset(drm_bacon_bo *bo, uint64_t offset)
+{
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+
+ bo->offset64 = offset;
+ bo->offset = offset;
+ bo_gem->kflags |= EXEC_OBJECT_PINNED;
+
+ return 0;
+}
+
+drm_bacon_bo *
+drm_bacon_bo_gem_create_from_prime(drm_bacon_bufmgr *bufmgr, int prime_fd, int size)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem = (drm_bacon_bufmgr_gem *) bufmgr;
+ int ret;
+ uint32_t handle;
+ drm_bacon_bo_gem *bo_gem;
+ struct drm_i915_gem_get_tiling get_tiling;
+
+ pthread_mutex_lock(&bufmgr_gem->lock);
+ ret = drmPrimeFDToHandle(bufmgr_gem->fd, prime_fd, &handle);
+ if (ret) {
+ DBG("create_from_prime: failed to obtain handle from fd: %s\n", strerror(errno));
+ pthread_mutex_unlock(&bufmgr_gem->lock);
+ return NULL;
+ }
+
+ /*
+ * See if the kernel has already returned this buffer to us. Just as
+ * for named buffers, we must not create two bo's pointing at the same
+ * kernel object
+ */
+ HASH_FIND(handle_hh, bufmgr_gem->handle_table,
+ &handle, sizeof(handle), bo_gem);
+ if (bo_gem) {
+ drm_bacon_gem_bo_reference(&bo_gem->bo);
+ goto out;
+ }
+
+ bo_gem = calloc(1, sizeof(*bo_gem));
+ if (!bo_gem)
+ goto out;
+
+ p_atomic_set(&bo_gem->refcount, 1);
+ list_inithead(&bo_gem->vma_list);
+
+ /* Determine size of bo. The fd-to-handle ioctl really should
+ * return the size, but it doesn't. If we have kernel 3.12 or
+ * later, we can lseek on the prime fd to get the size. Older
+ * kernels will just fail, in which case we fall back to the
+ * provided (estimated or guess size). */
+ ret = lseek(prime_fd, 0, SEEK_END);
+ if (ret != -1)
+ bo_gem->bo.size = ret;
+ else
+ bo_gem->bo.size = size;
+
+ bo_gem->bo.handle = handle;
+ bo_gem->bo.bufmgr = bufmgr;
+
+ bo_gem->gem_handle = handle;
+ HASH_ADD(handle_hh, bufmgr_gem->handle_table,
+ gem_handle, sizeof(bo_gem->gem_handle), bo_gem);
+
+ bo_gem->name = "prime";
+ bo_gem->validate_index = -1;
+ bo_gem->used_as_reloc_target = false;
+ bo_gem->has_error = false;
+ bo_gem->reusable = false;
+
+ memclear(get_tiling);
+ get_tiling.handle = bo_gem->gem_handle;
+ if (drmIoctl(bufmgr_gem->fd,
+ DRM_IOCTL_I915_GEM_GET_TILING,
+ &get_tiling))
+ goto err;
+
+ bo_gem->tiling_mode = get_tiling.tiling_mode;
+ bo_gem->swizzle_mode = get_tiling.swizzle_mode;
+ /* XXX stride is unknown */
+ drm_bacon_bo_gem_set_in_aperture_size(bufmgr_gem, bo_gem, 0);
+
+out:
+ pthread_mutex_unlock(&bufmgr_gem->lock);
+ return &bo_gem->bo;
+
+err:
+ drm_bacon_gem_bo_free(&bo_gem->bo);
+ pthread_mutex_unlock(&bufmgr_gem->lock);
+ return NULL;
+}
+
+int
+drm_bacon_bo_gem_export_to_prime(drm_bacon_bo *bo, int *prime_fd)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem = (drm_bacon_bufmgr_gem *) bo->bufmgr;
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+
+ if (drmPrimeHandleToFD(bufmgr_gem->fd, bo_gem->gem_handle,
+ DRM_CLOEXEC, prime_fd) != 0)
+ return -errno;
+
+ bo_gem->reusable = false;
+
+ return 0;
+}
+
+static int
+drm_bacon_gem_bo_flink(drm_bacon_bo *bo, uint32_t * name)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem = (drm_bacon_bufmgr_gem *) bo->bufmgr;
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+
+ if (!bo_gem->global_name) {
+ struct drm_gem_flink flink;
+
+ memclear(flink);
+ flink.handle = bo_gem->gem_handle;
+ if (drmIoctl(bufmgr_gem->fd, DRM_IOCTL_GEM_FLINK, &flink))
+ return -errno;
+
+ pthread_mutex_lock(&bufmgr_gem->lock);
+ if (!bo_gem->global_name) {
+ bo_gem->global_name = flink.name;
+ bo_gem->reusable = false;
+
+ HASH_ADD(name_hh, bufmgr_gem->name_table,
+ global_name, sizeof(bo_gem->global_name),
+ bo_gem);
+ }
+ pthread_mutex_unlock(&bufmgr_gem->lock);
+ }
+
+ *name = bo_gem->global_name;
+ 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
+drm_bacon_bufmgr_gem_enable_reuse(drm_bacon_bufmgr *bufmgr)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem = (drm_bacon_bufmgr_gem *) bufmgr;
+
+ bufmgr_gem->bo_reuse = true;
+}
+
+/**
+ * Disables implicit synchronisation before executing the bo
+ *
+ * This will cause rendering corruption unless you correctly manage explicit
+ * fences for all rendering involving this buffer - including use by others.
+ * Disabling the implicit serialisation is only required if that serialisation
+ * is too coarse (for example, you have split the buffer into many
+ * non-overlapping regions and are sharing the whole buffer between concurrent
+ * independent command streams).
+ *
+ * Note the kernel must advertise support via I915_PARAM_HAS_EXEC_ASYNC,
+ * which can be checked using drm_bacon_bufmgr_can_disable_implicit_sync,
+ * or subsequent execbufs involving the bo will generate EINVAL.
+ */
+void
+drm_bacon_gem_bo_disable_implicit_sync(drm_bacon_bo *bo)
+{
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+
+ bo_gem->kflags |= EXEC_OBJECT_ASYNC;
+}
+
+/**
+ * Enables implicit synchronisation before executing the bo
+ *
+ * This is the default behaviour of the kernel, to wait upon prior writes
+ * completing on the object before rendering with it, or to wait for prior
+ * reads to complete before writing into the object.
+ * drm_bacon_gem_bo_disable_implicit_sync() can stop this behaviour, telling
+ * the kernel never to insert a stall before using the object. Then this
+ * function can be used to restore the implicit sync before subsequent
+ * rendering.
+ */
+void
+drm_bacon_gem_bo_enable_implicit_sync(drm_bacon_bo *bo)
+{
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+
+ bo_gem->kflags &= ~EXEC_OBJECT_ASYNC;
+}
+
+/**
+ * Query whether the kernel supports disabling of its implicit synchronisation
+ * before execbuf. See drm_bacon_gem_bo_disable_implicit_sync()
+ */
+int
+drm_bacon_bufmgr_gem_can_disable_implicit_sync(drm_bacon_bufmgr *bufmgr)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem = (drm_bacon_bufmgr_gem *) bufmgr;
+
+ return bufmgr_gem->has_exec_async;
+}
+
+/**
+ * Return the additional aperture space required by the tree of buffer objects
+ * rooted at bo.
+ */
+static int
+drm_bacon_gem_bo_get_aperture_space(drm_bacon_bo *bo)
+{
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+ int i;
+ int total = 0;
+
+ if (bo == NULL || bo_gem->included_in_check_aperture)
+ return 0;
+
+ total += bo->size;
+ bo_gem->included_in_check_aperture = true;
+
+ for (i = 0; i < bo_gem->reloc_count; i++)
+ total +=
+ drm_bacon_gem_bo_get_aperture_space(bo_gem->
+ reloc_target_info[i].bo);
+
+ return total;
+}
+
+/**
+ * Clear the flag set by drm_bacon_gem_bo_get_aperture_space() so we're ready
+ * for the next drm_bacon_bufmgr_check_aperture_space() call.
+ */
+static void
+drm_bacon_gem_bo_clear_aperture_space_flag(drm_bacon_bo *bo)
+{
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+ int i;
+
+ if (bo == NULL || !bo_gem->included_in_check_aperture)
+ return;
+
+ bo_gem->included_in_check_aperture = false;
+
+ for (i = 0; i < bo_gem->reloc_count; i++)
+ drm_bacon_gem_bo_clear_aperture_space_flag(bo_gem->
+ reloc_target_info[i].bo);
+}
+
+/**
+ * Return a conservative estimate for the amount of aperture required
+ * for a collection of buffers. This may double-count some buffers.
+ */
+static unsigned int
+drm_bacon_gem_estimate_batch_space(drm_bacon_bo **bo_array, int count)
+{
+ int i;
+ unsigned int total = 0;
+
+ for (i = 0; i < count; i++) {
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo_array[i];
+ if (bo_gem != NULL)
+ total += bo_gem->reloc_tree_size;
+ }
+ return total;
+}
+
+/**
+ * Return the amount of aperture needed for a collection of buffers.
+ * This avoids double counting any buffers, at the cost of looking
+ * at every buffer in the set.
+ */
+static unsigned int
+drm_bacon_gem_compute_batch_space(drm_bacon_bo **bo_array, int count)
+{
+ int i;
+ unsigned int total = 0;
+
+ for (i = 0; i < count; i++) {
+ total += drm_bacon_gem_bo_get_aperture_space(bo_array[i]);
+ /* For the first buffer object in the array, we get an
+ * accurate count back for its reloc_tree size (since nothing
+ * had been flagged as being counted yet). We can save that
+ * value out as a more conservative reloc_tree_size that
+ * avoids double-counting target buffers. Since the first
+ * buffer happens to usually be the batch buffer in our
+ * callers, this can pull us back from doing the tree
+ * walk on every new batch emit.
+ */
+ if (i == 0) {
+ drm_bacon_bo_gem *bo_gem =
+ (drm_bacon_bo_gem *) bo_array[i];
+ bo_gem->reloc_tree_size = total;
+ }
+ }
+
+ for (i = 0; i < count; i++)
+ drm_bacon_gem_bo_clear_aperture_space_flag(bo_array[i]);
+ return total;
+}
+
+/**
+ * Return -1 if the batchbuffer should be flushed before attempting to
+ * emit rendering referencing the buffers pointed to by bo_array.
+ *
+ * This is required because if we try to emit a batchbuffer with relocations
+ * to a tree of buffers that won't simultaneously fit in the aperture,
+ * the rendering will return an error at a point where the software is not
+ * prepared to recover from it.
+ *
+ * However, we also want to emit the batchbuffer significantly before we reach
+ * the limit, as a series of batchbuffers each of which references buffers
+ * covering almost all of the aperture means that at each emit we end up
+ * waiting to evict a buffer from the last rendering, and we get synchronous
+ * performance. By emitting smaller batchbuffers, we eat some CPU overhead to
+ * get better parallelism.
+ */
+static int
+drm_bacon_gem_check_aperture_space(drm_bacon_bo **bo_array, int count)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem =
+ (drm_bacon_bufmgr_gem *) bo_array[0]->bufmgr;
+ unsigned int total = 0;
+ unsigned int threshold = bufmgr_gem->gtt_size * 3 / 4;
+
+ total = drm_bacon_gem_estimate_batch_space(bo_array, count);
+
+ if (total > threshold)
+ total = drm_bacon_gem_compute_batch_space(bo_array, count);
+
+ if (total > threshold) {
+ DBG("check_space: overflowed available aperture, "
+ "%dkb vs %dkb\n",
+ total / 1024, (int)bufmgr_gem->gtt_size / 1024);
+ return -ENOSPC;
+ } else {
+ DBG("drm_check_space: total %dkb vs bufgr %dkb\n", total / 1024,
+ (int)bufmgr_gem->gtt_size / 1024);
+ return 0;
+ }
+}
+
+/*
+ * Disable buffer reuse for objects which are shared with the kernel
+ * as scanout buffers
+ */
+static int
+drm_bacon_gem_bo_disable_reuse(drm_bacon_bo *bo)
+{
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+
+ bo_gem->reusable = false;
+ return 0;
+}
+
+static int
+drm_bacon_gem_bo_is_reusable(drm_bacon_bo *bo)
+{
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+
+ return bo_gem->reusable;
+}
+
+static int
+_drm_bacon_gem_bo_references(drm_bacon_bo *bo, drm_bacon_bo *target_bo)
+{
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+ int i;
+
+ for (i = 0; i < bo_gem->reloc_count; i++) {
+ if (bo_gem->reloc_target_info[i].bo == target_bo)
+ return 1;
+ if (bo == bo_gem->reloc_target_info[i].bo)
+ continue;
+ if (_drm_bacon_gem_bo_references(bo_gem->reloc_target_info[i].bo,
+ target_bo))
+ return 1;
+ }
+
+ for (i = 0; i< bo_gem->softpin_target_count; i++) {
+ if (bo_gem->softpin_target[i] == target_bo)
+ return 1;
+ if (_drm_bacon_gem_bo_references(bo_gem->softpin_target[i], target_bo))
+ return 1;
+ }
+
+ return 0;
+}
+
+/** Return true if target_bo is referenced by bo's relocation tree. */
+static int
+drm_bacon_gem_bo_references(drm_bacon_bo *bo, drm_bacon_bo *target_bo)
+{
+ drm_bacon_bo_gem *target_bo_gem = (drm_bacon_bo_gem *) target_bo;
+
+ if (bo == NULL || target_bo == NULL)
+ return 0;
+ if (target_bo_gem->used_as_reloc_target)
+ return _drm_bacon_gem_bo_references(bo, target_bo);
+ return 0;
+}
+
+static void
+add_bucket(drm_bacon_bufmgr_gem *bufmgr_gem, int size)
+{
+ unsigned int i = bufmgr_gem->num_buckets;
+
+ assert(i < ARRAY_SIZE(bufmgr_gem->cache_bucket));
+
+ list_inithead(&bufmgr_gem->cache_bucket[i].head);
+ bufmgr_gem->cache_bucket[i].size = size;
+ bufmgr_gem->num_buckets++;
+}
+
+static void
+init_cache_buckets(drm_bacon_bufmgr_gem *bufmgr_gem)
+{
+ unsigned long size, cache_max_size = 64 * 1024 * 1024;
+
+ /* OK, so power of two buckets was too wasteful of memory.
+ * Give 3 other sizes between each power of two, to hopefully
+ * cover things accurately enough. (The alternative is
+ * probably to just go for exact matching of sizes, and assume
+ * that for things like composited window resize the tiled
+ * width/height alignment and rounding of sizes to pages will
+ * get us useful cache hit rates anyway)
+ */
+ add_bucket(bufmgr_gem, 4096);
+ add_bucket(bufmgr_gem, 4096 * 2);
+ add_bucket(bufmgr_gem, 4096 * 3);
+
+ /* Initialize the linked lists for BO reuse cache. */
+ for (size = 4 * 4096; size <= cache_max_size; size *= 2) {
+ add_bucket(bufmgr_gem, size);
+
+ add_bucket(bufmgr_gem, size + size * 1 / 4);
+ add_bucket(bufmgr_gem, size + size * 2 / 4);
+ add_bucket(bufmgr_gem, size + size * 3 / 4);
+ }
+}
+
+void
+drm_bacon_bufmgr_gem_set_vma_cache_size(drm_bacon_bufmgr *bufmgr, int limit)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem = (drm_bacon_bufmgr_gem *)bufmgr;
+
+ bufmgr_gem->vma_max = limit;
+
+ drm_bacon_gem_bo_purge_vma_cache(bufmgr_gem);
+}
+
+static int
+parse_devid_override(const char *devid_override)
+{
+ static const struct {
+ const char *name;
+ int pci_id;
+ } name_map[] = {
+ { "brw", PCI_CHIP_I965_GM },
+ { "g4x", PCI_CHIP_GM45_GM },
+ { "ilk", PCI_CHIP_ILD_G },
+ { "snb", PCI_CHIP_SANDYBRIDGE_M_GT2_PLUS },
+ { "ivb", PCI_CHIP_IVYBRIDGE_S_GT2 },
+ { "hsw", PCI_CHIP_HASWELL_CRW_E_GT3 },
+ { "byt", PCI_CHIP_VALLEYVIEW_3 },
+ { "bdw", 0x1620 | BDW_ULX },
+ { "skl", PCI_CHIP_SKYLAKE_DT_GT2 },
+ { "kbl", PCI_CHIP_KABYLAKE_DT_GT2 },
+ };
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(name_map); i++) {
+ if (!strcmp(name_map[i].name, devid_override))
+ return name_map[i].pci_id;
+ }
+
+ return strtod(devid_override, NULL);
+}
+
+/**
+ * Get the PCI ID for the device. This can be overridden by setting the
+ * INTEL_DEVID_OVERRIDE environment variable to the desired ID.
+ */
+static int
+get_pci_device_id(drm_bacon_bufmgr_gem *bufmgr_gem)
+{
+ char *devid_override;
+ int devid = 0;
+ int ret;
+ drm_i915_getparam_t gp;
+
+ if (geteuid() == getuid()) {
+ devid_override = getenv("INTEL_DEVID_OVERRIDE");
+ if (devid_override) {
+ bufmgr_gem->no_exec = true;
+ return parse_devid_override(devid_override);
+ }
+ }
+
+ memclear(gp);
+ gp.param = I915_PARAM_CHIPSET_ID;
+ gp.value = &devid;
+ ret = drmIoctl(bufmgr_gem->fd, DRM_IOCTL_I915_GETPARAM, &gp);
+ if (ret) {
+ fprintf(stderr, "get chip id failed: %d [%d]\n", ret, errno);
+ fprintf(stderr, "param: %d, val: %d\n", gp.param, *gp.value);
+ }
+ return devid;
+}
+
+int
+drm_bacon_bufmgr_gem_get_devid(drm_bacon_bufmgr *bufmgr)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem = (drm_bacon_bufmgr_gem *)bufmgr;
+
+ return bufmgr_gem->pci_device;
+}
+
+drm_bacon_context *
+drm_bacon_gem_context_create(drm_bacon_bufmgr *bufmgr)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem = (drm_bacon_bufmgr_gem *)bufmgr;
+ struct drm_i915_gem_context_create create;
+ drm_bacon_context *context = NULL;
+ int ret;
+
+ context = calloc(1, sizeof(*context));
+ if (!context)
+ return NULL;
+
+ memclear(create);
+ ret = drmIoctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_CONTEXT_CREATE, &create);
+ if (ret != 0) {
+ DBG("DRM_IOCTL_I915_GEM_CONTEXT_CREATE failed: %s\n",
+ strerror(errno));
+ free(context);
+ return NULL;
+ }
+
+ context->ctx_id = create.ctx_id;
+ context->bufmgr = bufmgr;
+
+ return context;
+}
+
+int
+drm_bacon_gem_context_get_id(drm_bacon_context *ctx, uint32_t *ctx_id)
+{
+ if (ctx == NULL)
+ return -EINVAL;
+
+ *ctx_id = ctx->ctx_id;
+
+ return 0;
+}
+
+void
+drm_bacon_gem_context_destroy(drm_bacon_context *ctx)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem;
+ struct drm_i915_gem_context_destroy destroy;
+ int ret;
+
+ if (ctx == NULL)
+ return;
+
+ memclear(destroy);
+
+ bufmgr_gem = (drm_bacon_bufmgr_gem *)ctx->bufmgr;
+ destroy.ctx_id = ctx->ctx_id;
+ ret = drmIoctl(bufmgr_gem->fd, DRM_IOCTL_I915_GEM_CONTEXT_DESTROY,
+ &destroy);
+ if (ret != 0)
+ fprintf(stderr, "DRM_IOCTL_I915_GEM_CONTEXT_DESTROY failed: %s\n",
+ strerror(errno));
+
+ free(ctx);
+}
+
+int
+drm_bacon_get_reset_stats(drm_bacon_context *ctx,
+ uint32_t *reset_count,
+ uint32_t *active,
+ uint32_t *pending)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem;
+ struct drm_i915_reset_stats stats;
+ int ret;
+
+ if (ctx == NULL)
+ return -EINVAL;
+
+ memclear(stats);
+
+ bufmgr_gem = (drm_bacon_bufmgr_gem *)ctx->bufmgr;
+ stats.ctx_id = ctx->ctx_id;
+ ret = drmIoctl(bufmgr_gem->fd,
+ DRM_IOCTL_I915_GET_RESET_STATS,
+ &stats);
+ if (ret == 0) {
+ if (reset_count != NULL)
+ *reset_count = stats.reset_count;
+
+ if (active != NULL)
+ *active = stats.batch_active;
+
+ if (pending != NULL)
+ *pending = stats.batch_pending;
+ }
+
+ return ret;
+}
+
+int
+drm_bacon_reg_read(drm_bacon_bufmgr *bufmgr,
+ uint32_t offset,
+ uint64_t *result)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem = (drm_bacon_bufmgr_gem *)bufmgr;
+ struct drm_i915_reg_read reg_read;
+ int ret;
+
+ memclear(reg_read);
+ reg_read.offset = offset;
+
+ ret = drmIoctl(bufmgr_gem->fd, DRM_IOCTL_I915_REG_READ, ®_read);
+
+ *result = reg_read.val;
+ return ret;
+}
+
+static pthread_mutex_t bufmgr_list_mutex = PTHREAD_MUTEX_INITIALIZER;
+static struct list_head bufmgr_list = { &bufmgr_list, &bufmgr_list };
+
+static drm_bacon_bufmgr_gem *
+drm_bacon_bufmgr_gem_find(int fd)
+{
+ list_for_each_entry(drm_bacon_bufmgr_gem,
+ bufmgr_gem, &bufmgr_list, managers) {
+ if (bufmgr_gem->fd == fd) {
+ p_atomic_inc(&bufmgr_gem->refcount);
+ return bufmgr_gem;
+ }
+ }
+
+ return NULL;
+}
+
+static void
+drm_bacon_bufmgr_gem_unref(drm_bacon_bufmgr *bufmgr)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem = (drm_bacon_bufmgr_gem *)bufmgr;
+
+ if (atomic_add_unless(&bufmgr_gem->refcount, -1, 1)) {
+ pthread_mutex_lock(&bufmgr_list_mutex);
+
+ if (p_atomic_dec_zero(&bufmgr_gem->refcount)) {
+ list_del(&bufmgr_gem->managers);
+ drm_bacon_bufmgr_gem_destroy(bufmgr);
+ }
+
+ pthread_mutex_unlock(&bufmgr_list_mutex);
+ }
+}
+
+void *drm_bacon_gem_bo_map__gtt(drm_bacon_bo *bo)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem = (drm_bacon_bufmgr_gem *) bo->bufmgr;
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+
+ if (bo_gem->gtt_virtual)
+ return bo_gem->gtt_virtual;
+
+ if (bo_gem->is_userptr)
+ return NULL;
+
+ pthread_mutex_lock(&bufmgr_gem->lock);
+ if (bo_gem->gtt_virtual == NULL) {
+ struct drm_i915_gem_mmap_gtt mmap_arg;
+ void *ptr;
+
+ DBG("bo_map_gtt: mmap %d (%s), map_count=%d\n",
+ bo_gem->gem_handle, bo_gem->name, bo_gem->map_count);
+
+ if (bo_gem->map_count++ == 0)
+ drm_bacon_gem_bo_open_vma(bufmgr_gem, bo_gem);
+
+ memclear(mmap_arg);
+ mmap_arg.handle = bo_gem->gem_handle;
+
+ /* Get the fake offset back... */
+ ptr = MAP_FAILED;
+ if (drmIoctl(bufmgr_gem->fd,
+ DRM_IOCTL_I915_GEM_MMAP_GTT,
+ &mmap_arg) == 0) {
+ /* and mmap it */
+ ptr = drm_mmap(0, bo->size, PROT_READ | PROT_WRITE,
+ MAP_SHARED, bufmgr_gem->fd,
+ mmap_arg.offset);
+ }
+ if (ptr == MAP_FAILED) {
+ if (--bo_gem->map_count == 0)
+ drm_bacon_gem_bo_close_vma(bufmgr_gem, bo_gem);
+ ptr = NULL;
+ }
+
+ bo_gem->gtt_virtual = ptr;
+ }
+ pthread_mutex_unlock(&bufmgr_gem->lock);
+
+ return bo_gem->gtt_virtual;
+}
+
+void *drm_bacon_gem_bo_map__cpu(drm_bacon_bo *bo)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem = (drm_bacon_bufmgr_gem *) bo->bufmgr;
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+
+ if (bo_gem->mem_virtual)
+ return bo_gem->mem_virtual;
+
+ if (bo_gem->is_userptr) {
+ /* Return the same user ptr */
+ return bo_gem->user_virtual;
+ }
+
+ pthread_mutex_lock(&bufmgr_gem->lock);
+ if (!bo_gem->mem_virtual) {
+ struct drm_i915_gem_mmap mmap_arg;
+
+ if (bo_gem->map_count++ == 0)
+ drm_bacon_gem_bo_open_vma(bufmgr_gem, bo_gem);
+
+ DBG("bo_map: %d (%s), map_count=%d\n",
+ bo_gem->gem_handle, bo_gem->name, bo_gem->map_count);
+
+ memclear(mmap_arg);
+ mmap_arg.handle = bo_gem->gem_handle;
+ mmap_arg.size = bo->size;
+ if (drmIoctl(bufmgr_gem->fd,
+ DRM_IOCTL_I915_GEM_MMAP,
+ &mmap_arg)) {
+ DBG("%s:%d: Error mapping buffer %d (%s): %s .\n",
+ __FILE__, __LINE__, bo_gem->gem_handle,
+ bo_gem->name, strerror(errno));
+ if (--bo_gem->map_count == 0)
+ drm_bacon_gem_bo_close_vma(bufmgr_gem, bo_gem);
+ } else {
+ VG(VALGRIND_MALLOCLIKE_BLOCK(mmap_arg.addr_ptr, mmap_arg.size, 0, 1));
+ bo_gem->mem_virtual = (void *)(uintptr_t) mmap_arg.addr_ptr;
+ }
+ }
+ pthread_mutex_unlock(&bufmgr_gem->lock);
+
+ return bo_gem->mem_virtual;
+}
+
+void *drm_bacon_gem_bo_map__wc(drm_bacon_bo *bo)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem = (drm_bacon_bufmgr_gem *) bo->bufmgr;
+ drm_bacon_bo_gem *bo_gem = (drm_bacon_bo_gem *) bo;
+
+ if (bo_gem->wc_virtual)
+ return bo_gem->wc_virtual;
+
+ if (bo_gem->is_userptr)
+ return NULL;
+
+ pthread_mutex_lock(&bufmgr_gem->lock);
+ if (!bo_gem->wc_virtual) {
+ struct drm_i915_gem_mmap mmap_arg;
+
+ if (bo_gem->map_count++ == 0)
+ drm_bacon_gem_bo_open_vma(bufmgr_gem, bo_gem);
+
+ DBG("bo_map: %d (%s), map_count=%d\n",
+ bo_gem->gem_handle, bo_gem->name, bo_gem->map_count);
+
+ memclear(mmap_arg);
+ mmap_arg.handle = bo_gem->gem_handle;
+ mmap_arg.size = bo->size;
+ mmap_arg.flags = I915_MMAP_WC;
+ if (drmIoctl(bufmgr_gem->fd,
+ DRM_IOCTL_I915_GEM_MMAP,
+ &mmap_arg)) {
+ DBG("%s:%d: Error mapping buffer %d (%s): %s .\n",
+ __FILE__, __LINE__, bo_gem->gem_handle,
+ bo_gem->name, strerror(errno));
+ if (--bo_gem->map_count == 0)
+ drm_bacon_gem_bo_close_vma(bufmgr_gem, bo_gem);
+ } else {
+ VG(VALGRIND_MALLOCLIKE_BLOCK(mmap_arg.addr_ptr, mmap_arg.size, 0, 1));
+ bo_gem->wc_virtual = (void *)(uintptr_t) mmap_arg.addr_ptr;
+ }
+ }
+ pthread_mutex_unlock(&bufmgr_gem->lock);
+
+ return bo_gem->wc_virtual;
+}
+
+/**
+ * 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.
+ */
+drm_bacon_bufmgr *
+drm_bacon_bufmgr_gem_init(int fd, int batch_size)
+{
+ drm_bacon_bufmgr_gem *bufmgr_gem;
+ struct drm_i915_gem_get_aperture aperture;
+ drm_i915_getparam_t gp;
+ int ret, tmp;
+
+ pthread_mutex_lock(&bufmgr_list_mutex);
+
+ bufmgr_gem = drm_bacon_bufmgr_gem_find(fd);
+ if (bufmgr_gem)
+ goto exit;
+
+ bufmgr_gem = calloc(1, sizeof(*bufmgr_gem));
+ if (bufmgr_gem == NULL)
+ goto exit;
+
+ bufmgr_gem->fd = fd;
+ p_atomic_set(&bufmgr_gem->refcount, 1);
+
+ if (pthread_mutex_init(&bufmgr_gem->lock, NULL) != 0) {
+ free(bufmgr_gem);
+ bufmgr_gem = NULL;
+ goto exit;
+ }
+
+ memclear(aperture);
+ ret = drmIoctl(bufmgr_gem->fd,
+ DRM_IOCTL_I915_GEM_GET_APERTURE,
+ &aperture);
+
+ if (ret == 0)
+ bufmgr_gem->gtt_size = aperture.aper_available_size;
+ else {
+ fprintf(stderr, "DRM_IOCTL_I915_GEM_APERTURE failed: %s\n",
+ strerror(errno));
+ bufmgr_gem->gtt_size = 128 * 1024 * 1024;
+ fprintf(stderr, "Assuming %dkB available aperture size.\n"
+ "May lead to reduced performance or incorrect "
+ "rendering.\n",
+ (int)bufmgr_gem->gtt_size / 1024);
+ }
+
+ bufmgr_gem->pci_device = get_pci_device_id(bufmgr_gem);
+
+ if (IS_GEN4(bufmgr_gem->pci_device))
+ bufmgr_gem->gen = 4;
+ else if (IS_GEN5(bufmgr_gem->pci_device))
+ bufmgr_gem->gen = 5;
+ else if (IS_GEN6(bufmgr_gem->pci_device))
+ bufmgr_gem->gen = 6;
+ else if (IS_GEN7(bufmgr_gem->pci_device))
+ bufmgr_gem->gen = 7;
+ else if (IS_GEN8(bufmgr_gem->pci_device))
+ bufmgr_gem->gen = 8;
+ else if (IS_GEN9(bufmgr_gem->pci_device))
+ bufmgr_gem->gen = 9;
+ else {
+ free(bufmgr_gem);
+ bufmgr_gem = NULL;
+ goto exit;
+ }
+
+ memclear(gp);
+ gp.value = &tmp;
+
+ gp.param = I915_PARAM_HAS_BSD;
+ ret = drmIoctl(bufmgr_gem->fd, DRM_IOCTL_I915_GETPARAM, &gp);
+ bufmgr_gem->has_bsd = ret == 0;
+
+ gp.param = I915_PARAM_HAS_BLT;
+ ret = drmIoctl(bufmgr_gem->fd, DRM_IOCTL_I915_GETPARAM, &gp);
+ bufmgr_gem->has_blt = ret == 0;
+
+ gp.param = I915_PARAM_HAS_EXEC_ASYNC;
+ ret = drmIoctl(bufmgr_gem->fd, DRM_IOCTL_I915_GETPARAM, &gp);
+ bufmgr_gem->has_exec_async = ret == 0;
+
+ bufmgr_gem->bufmgr.bo_alloc_userptr = check_bo_alloc_userptr;
+
+ gp.param = I915_PARAM_HAS_WAIT_TIMEOUT;
+ ret = drmIoctl(bufmgr_gem->fd, DRM_IOCTL_I915_GETPARAM, &gp);
+ bufmgr_gem->has_wait_timeout = ret == 0;
+
+ gp.param = I915_PARAM_HAS_LLC;
+ ret = drmIoctl(bufmgr_gem->fd, DRM_IOCTL_I915_GETPARAM, &gp);
+ if (ret != 0) {
+ /* Kernel does not supports HAS_LLC query, fallback to GPU
+ * generation detection and assume that we have LLC on GEN6/7
+ */
+ bufmgr_gem->has_llc = (IS_GEN6(bufmgr_gem->pci_device) |
+ IS_GEN7(bufmgr_gem->pci_device));
+ } else
+ bufmgr_gem->has_llc = *gp.value;
+
+ gp.param = I915_PARAM_HAS_VEBOX;
+ ret = drmIoctl(bufmgr_gem->fd, DRM_IOCTL_I915_GETPARAM, &gp);
+ bufmgr_gem->has_vebox = (ret == 0) & (*gp.value > 0);
+
+ gp.param = I915_PARAM_HAS_EXEC_SOFTPIN;
+ ret = drmIoctl(bufmgr_gem->fd, DRM_IOCTL_I915_GETPARAM, &gp);
+ if (ret == 0 && *gp.value > 0)
+ bufmgr_gem->bufmgr.bo_set_softpin_offset = drm_bacon_gem_bo_set_softpin_offset;
+
+ /* 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 = drm_bacon_gem_bo_alloc;
+ bufmgr_gem->bufmgr.bo_alloc_for_render =
+ drm_bacon_gem_bo_alloc_for_render;
+ bufmgr_gem->bufmgr.bo_alloc_tiled = drm_bacon_gem_bo_alloc_tiled;
+ bufmgr_gem->bufmgr.bo_reference = drm_bacon_gem_bo_reference;
+ bufmgr_gem->bufmgr.bo_unreference = drm_bacon_gem_bo_unreference;
+ bufmgr_gem->bufmgr.bo_map = drm_bacon_gem_bo_map;
+ bufmgr_gem->bufmgr.bo_unmap = drm_bacon_gem_bo_unmap;
+ bufmgr_gem->bufmgr.bo_subdata = drm_bacon_gem_bo_subdata;
+ bufmgr_gem->bufmgr.bo_get_subdata = drm_bacon_gem_bo_get_subdata;
+ bufmgr_gem->bufmgr.bo_wait_rendering = drm_bacon_gem_bo_wait_rendering;
+ bufmgr_gem->bufmgr.bo_emit_reloc = drm_bacon_gem_bo_emit_reloc;
+ bufmgr_gem->bufmgr.bo_get_tiling = drm_bacon_gem_bo_get_tiling;
+ bufmgr_gem->bufmgr.bo_set_tiling = drm_bacon_gem_bo_set_tiling;
+ bufmgr_gem->bufmgr.bo_flink = drm_bacon_gem_bo_flink;
+ bufmgr_gem->bufmgr.bo_exec = drm_bacon_gem_bo_exec2;
+ bufmgr_gem->bufmgr.bo_mrb_exec = drm_bacon_gem_bo_mrb_exec2;
+ bufmgr_gem->bufmgr.bo_busy = drm_bacon_gem_bo_busy;
+ bufmgr_gem->bufmgr.bo_madvise = drm_bacon_gem_bo_madvise;
+ bufmgr_gem->bufmgr.destroy = drm_bacon_bufmgr_gem_unref;
+ bufmgr_gem->bufmgr.debug = 0;
+ bufmgr_gem->bufmgr.check_aperture_space =
+ drm_bacon_gem_check_aperture_space;
+ bufmgr_gem->bufmgr.bo_disable_reuse = drm_bacon_gem_bo_disable_reuse;
+ bufmgr_gem->bufmgr.bo_is_reusable = drm_bacon_gem_bo_is_reusable;
+ bufmgr_gem->bufmgr.bo_references = drm_bacon_gem_bo_references;
+
+ init_cache_buckets(bufmgr_gem);
+
+ list_inithead(&bufmgr_gem->vma_cache);
+ bufmgr_gem->vma_max = -1; /* unlimited by default */
+
+ list_add(&bufmgr_gem->managers, &bufmgr_list);
+
+exit:
+ pthread_mutex_unlock(&bufmgr_list_mutex);
+
+ return bufmgr_gem != NULL ? &bufmgr_gem->bufmgr : NULL;
+}
projects / mesa.git / blobdiff