--- /dev/null
+/*
+ * Copyright 2009 Jerome Glisse.
+ * 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:
+ * Jerome Glisse <glisse@freedesktop.org>
+ * Thomas Hellstrom <thomas-at-tungstengraphics-dot-com>
+ * Dave Airlie
+ */
+#include <linux/list.h>
+#include <linux/slab.h>
+#include <drm/drmP.h>
+#include <drm/amdgpu_drm.h>
+#include <drm/drm_cache.h>
+#include "amdgpu.h"
+#include "amdgpu_trace.h"
+
+
+int amdgpu_ttm_init(struct amdgpu_device *adev);
+void amdgpu_ttm_fini(struct amdgpu_device *adev);
+
+static u64 amdgpu_get_vis_part_size(struct amdgpu_device *adev,
+ struct ttm_mem_reg *mem)
+{
+ u64 ret = 0;
+ if (mem->start << PAGE_SHIFT < adev->mc.visible_vram_size) {
+ ret = (u64)((mem->start << PAGE_SHIFT) + mem->size) >
+ adev->mc.visible_vram_size ?
+ adev->mc.visible_vram_size - (mem->start << PAGE_SHIFT) :
+ mem->size;
+ }
+ return ret;
+}
+
+static void amdgpu_update_memory_usage(struct amdgpu_device *adev,
+ struct ttm_mem_reg *old_mem,
+ struct ttm_mem_reg *new_mem)
+{
+ u64 vis_size;
+ if (!adev)
+ return;
+
+ if (new_mem) {
+ switch (new_mem->mem_type) {
+ case TTM_PL_TT:
+ atomic64_add(new_mem->size, &adev->gtt_usage);
+ break;
+ case TTM_PL_VRAM:
+ atomic64_add(new_mem->size, &adev->vram_usage);
+ vis_size = amdgpu_get_vis_part_size(adev, new_mem);
+ atomic64_add(vis_size, &adev->vram_vis_usage);
+ break;
+ }
+ }
+
+ if (old_mem) {
+ switch (old_mem->mem_type) {
+ case TTM_PL_TT:
+ atomic64_sub(old_mem->size, &adev->gtt_usage);
+ break;
+ case TTM_PL_VRAM:
+ atomic64_sub(old_mem->size, &adev->vram_usage);
+ vis_size = amdgpu_get_vis_part_size(adev, old_mem);
+ atomic64_sub(vis_size, &adev->vram_vis_usage);
+ break;
+ }
+ }
+}
+
+static void amdgpu_ttm_bo_destroy(struct ttm_buffer_object *tbo)
+{
+ struct amdgpu_bo *bo;
+
+ bo = container_of(tbo, struct amdgpu_bo, tbo);
+
+ amdgpu_update_memory_usage(bo->adev, &bo->tbo.mem, NULL);
+
+ mutex_lock(&bo->adev->gem.mutex);
+ list_del_init(&bo->list);
+ mutex_unlock(&bo->adev->gem.mutex);
+ drm_gem_object_release(&bo->gem_base);
+ amdgpu_bo_unref(&bo->parent);
+ kfree(bo->metadata);
+ kfree(bo);
+}
+
+bool amdgpu_ttm_bo_is_amdgpu_bo(struct ttm_buffer_object *bo)
+{
+ if (bo->destroy == &amdgpu_ttm_bo_destroy)
+ return true;
+ return false;
+}
+
+static void amdgpu_ttm_placement_init(struct amdgpu_device *adev,
+ struct ttm_placement *placement,
+ struct ttm_place *placements,
+ u32 domain, u64 flags)
+{
+ u32 c = 0, i;
+
+ placement->placement = placements;
+ placement->busy_placement = placements;
+
+ if (domain & AMDGPU_GEM_DOMAIN_VRAM) {
+ if (flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS &&
+ adev->mc.visible_vram_size < adev->mc.real_vram_size) {
+ placements[c].fpfn =
+ adev->mc.visible_vram_size >> PAGE_SHIFT;
+ placements[c++].flags = TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED |
+ TTM_PL_FLAG_VRAM | TTM_PL_FLAG_TOPDOWN;
+ }
+ placements[c].fpfn = 0;
+ placements[c++].flags = TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED |
+ TTM_PL_FLAG_VRAM;
+ if (!(flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED))
+ placements[c - 1].flags |= TTM_PL_FLAG_TOPDOWN;
+ }
+
+ if (domain & AMDGPU_GEM_DOMAIN_GTT) {
+ if (flags & AMDGPU_GEM_CREATE_CPU_GTT_USWC) {
+ placements[c].fpfn = 0;
+ placements[c++].flags = TTM_PL_FLAG_WC | TTM_PL_FLAG_TT |
+ TTM_PL_FLAG_UNCACHED;
+ } else {
+ placements[c].fpfn = 0;
+ placements[c++].flags = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_TT;
+ }
+ }
+
+ if (domain & AMDGPU_GEM_DOMAIN_CPU) {
+ if (flags & AMDGPU_GEM_CREATE_CPU_GTT_USWC) {
+ placements[c].fpfn = 0;
+ placements[c++].flags = TTM_PL_FLAG_WC | TTM_PL_FLAG_SYSTEM |
+ TTM_PL_FLAG_UNCACHED;
+ } else {
+ placements[c].fpfn = 0;
+ placements[c++].flags = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_SYSTEM;
+ }
+ }
+
+ if (domain & AMDGPU_GEM_DOMAIN_GDS) {
+ placements[c].fpfn = 0;
+ placements[c++].flags = TTM_PL_FLAG_UNCACHED |
+ AMDGPU_PL_FLAG_GDS;
+ }
+ if (domain & AMDGPU_GEM_DOMAIN_GWS) {
+ placements[c].fpfn = 0;
+ placements[c++].flags = TTM_PL_FLAG_UNCACHED |
+ AMDGPU_PL_FLAG_GWS;
+ }
+ if (domain & AMDGPU_GEM_DOMAIN_OA) {
+ placements[c].fpfn = 0;
+ placements[c++].flags = TTM_PL_FLAG_UNCACHED |
+ AMDGPU_PL_FLAG_OA;
+ }
+
+ if (!c) {
+ placements[c].fpfn = 0;
+ placements[c++].flags = TTM_PL_MASK_CACHING |
+ TTM_PL_FLAG_SYSTEM;
+ }
+ placement->num_placement = c;
+ placement->num_busy_placement = c;
+
+ for (i = 0; i < c; i++) {
+ if ((flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED) &&
+ (placements[i].flags & TTM_PL_FLAG_VRAM) &&
+ !placements[i].fpfn)
+ placements[i].lpfn =
+ adev->mc.visible_vram_size >> PAGE_SHIFT;
+ else
+ placements[i].lpfn = 0;
+ }
+}
+
+void amdgpu_ttm_placement_from_domain(struct amdgpu_bo *rbo, u32 domain)
+{
+ amdgpu_ttm_placement_init(rbo->adev, &rbo->placement,
+ rbo->placements, domain, rbo->flags);
+}
+
+static void amdgpu_fill_placement_to_bo(struct amdgpu_bo *bo,
+ struct ttm_placement *placement)
+{
+ BUG_ON(placement->num_placement > (AMDGPU_GEM_DOMAIN_MAX + 1));
+
+ memcpy(bo->placements, placement->placement,
+ placement->num_placement * sizeof(struct ttm_place));
+ bo->placement.num_placement = placement->num_placement;
+ bo->placement.num_busy_placement = placement->num_busy_placement;
+ bo->placement.placement = bo->placements;
+ bo->placement.busy_placement = bo->placements;
+}
+
+int amdgpu_bo_create_restricted(struct amdgpu_device *adev,
+ unsigned long size, int byte_align,
+ bool kernel, u32 domain, u64 flags,
+ struct sg_table *sg,
+ struct ttm_placement *placement,
+ struct reservation_object *resv,
+ struct amdgpu_bo **bo_ptr)
+{
+ struct amdgpu_bo *bo;
+ enum ttm_bo_type type;
+ unsigned long page_align;
+ size_t acc_size;
+ int r;
+
+ page_align = roundup(byte_align, PAGE_SIZE) >> PAGE_SHIFT;
+ size = ALIGN(size, PAGE_SIZE);
+
+ if (kernel) {
+ type = ttm_bo_type_kernel;
+ } else if (sg) {
+ type = ttm_bo_type_sg;
+ } else {
+ type = ttm_bo_type_device;
+ }
+ *bo_ptr = NULL;
+
+ acc_size = ttm_bo_dma_acc_size(&adev->mman.bdev, size,
+ sizeof(struct amdgpu_bo));
+
+ bo = kzalloc(sizeof(struct amdgpu_bo), GFP_KERNEL);
+ if (bo == NULL)
+ return -ENOMEM;
+ r = drm_gem_object_init(adev->ddev, &bo->gem_base, size);
+ if (unlikely(r)) {
+ kfree(bo);
+ return r;
+ }
+ bo->adev = adev;
+ INIT_LIST_HEAD(&bo->list);
+ INIT_LIST_HEAD(&bo->va);
+ bo->initial_domain = domain & (AMDGPU_GEM_DOMAIN_VRAM |
+ AMDGPU_GEM_DOMAIN_GTT |
+ AMDGPU_GEM_DOMAIN_CPU |
+ AMDGPU_GEM_DOMAIN_GDS |
+ AMDGPU_GEM_DOMAIN_GWS |
+ AMDGPU_GEM_DOMAIN_OA);
+
+ bo->flags = flags;
+
+ /* For architectures that don't support WC memory,
+ * mask out the WC flag from the BO
+ */
+ if (!drm_arch_can_wc_memory())
+ bo->flags &= ~AMDGPU_GEM_CREATE_CPU_GTT_USWC;
+
+ amdgpu_fill_placement_to_bo(bo, placement);
+ /* Kernel allocation are uninterruptible */
+ r = ttm_bo_init(&adev->mman.bdev, &bo->tbo, size, type,
+ &bo->placement, page_align, !kernel, NULL,
+ acc_size, sg, resv, &amdgpu_ttm_bo_destroy);
+ if (unlikely(r != 0)) {
+ return r;
+ }
+ *bo_ptr = bo;
+
+ trace_amdgpu_bo_create(bo);
+
+ return 0;
+}
+
+int amdgpu_bo_create(struct amdgpu_device *adev,
+ unsigned long size, int byte_align,
+ bool kernel, u32 domain, u64 flags,
+ struct sg_table *sg,
+ struct reservation_object *resv,
+ struct amdgpu_bo **bo_ptr)
+{
+ struct ttm_placement placement = {0};
+ struct ttm_place placements[AMDGPU_GEM_DOMAIN_MAX + 1];
+
+ memset(&placements, 0,
+ (AMDGPU_GEM_DOMAIN_MAX + 1) * sizeof(struct ttm_place));
+
+ amdgpu_ttm_placement_init(adev, &placement,
+ placements, domain, flags);
+
+ return amdgpu_bo_create_restricted(adev, size, byte_align, kernel,
+ domain, flags, sg, &placement,
+ resv, bo_ptr);
+}
+
+int amdgpu_bo_kmap(struct amdgpu_bo *bo, void **ptr)
+{
+ bool is_iomem;
+ int r;
+
+ if (bo->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)
+ return -EPERM;
+
+ if (bo->kptr) {
+ if (ptr) {
+ *ptr = bo->kptr;
+ }
+ return 0;
+ }
+ r = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages, &bo->kmap);
+ if (r) {
+ return r;
+ }
+ bo->kptr = ttm_kmap_obj_virtual(&bo->kmap, &is_iomem);
+ if (ptr) {
+ *ptr = bo->kptr;
+ }
+ return 0;
+}
+
+void amdgpu_bo_kunmap(struct amdgpu_bo *bo)
+{
+ if (bo->kptr == NULL)
+ return;
+ bo->kptr = NULL;
+ ttm_bo_kunmap(&bo->kmap);
+}
+
+struct amdgpu_bo *amdgpu_bo_ref(struct amdgpu_bo *bo)
+{
+ if (bo == NULL)
+ return NULL;
+
+ ttm_bo_reference(&bo->tbo);
+ return bo;
+}
+
+void amdgpu_bo_unref(struct amdgpu_bo **bo)
+{
+ struct ttm_buffer_object *tbo;
+
+ if ((*bo) == NULL)
+ return;
+
+ tbo = &((*bo)->tbo);
+ ttm_bo_unref(&tbo);
+ if (tbo == NULL)
+ *bo = NULL;
+}
+
+int amdgpu_bo_pin_restricted(struct amdgpu_bo *bo, u32 domain,
+ u64 min_offset, u64 max_offset,
+ u64 *gpu_addr)
+{
+ int r, i;
+ unsigned fpfn, lpfn;
+
+ if (amdgpu_ttm_tt_has_userptr(bo->tbo.ttm))
+ return -EPERM;
+
+ if (WARN_ON_ONCE(min_offset > max_offset))
+ return -EINVAL;
+
+ if (bo->pin_count) {
+ bo->pin_count++;
+ if (gpu_addr)
+ *gpu_addr = amdgpu_bo_gpu_offset(bo);
+
+ if (max_offset != 0) {
+ u64 domain_start;
+ if (domain == AMDGPU_GEM_DOMAIN_VRAM)
+ domain_start = bo->adev->mc.vram_start;
+ else
+ domain_start = bo->adev->mc.gtt_start;
+ WARN_ON_ONCE(max_offset <
+ (amdgpu_bo_gpu_offset(bo) - domain_start));
+ }
+
+ return 0;
+ }
+ amdgpu_ttm_placement_from_domain(bo, domain);
+ for (i = 0; i < bo->placement.num_placement; i++) {
+ /* force to pin into visible video ram */
+ if ((bo->placements[i].flags & TTM_PL_FLAG_VRAM) &&
+ !(bo->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS) &&
+ (!max_offset || max_offset > bo->adev->mc.visible_vram_size)) {
+ if (WARN_ON_ONCE(min_offset >
+ bo->adev->mc.visible_vram_size))
+ return -EINVAL;
+ fpfn = min_offset >> PAGE_SHIFT;
+ lpfn = bo->adev->mc.visible_vram_size >> PAGE_SHIFT;
+ } else {
+ fpfn = min_offset >> PAGE_SHIFT;
+ lpfn = max_offset >> PAGE_SHIFT;
+ }
+ if (fpfn > bo->placements[i].fpfn)
+ bo->placements[i].fpfn = fpfn;
+ if (!bo->placements[i].lpfn ||
+ (lpfn && lpfn < bo->placements[i].lpfn))
+ bo->placements[i].lpfn = lpfn;
+ bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT;
+ }
+
+ r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false);
+ if (likely(r == 0)) {
+ bo->pin_count = 1;
+ if (gpu_addr != NULL)
+ *gpu_addr = amdgpu_bo_gpu_offset(bo);
+ if (domain == AMDGPU_GEM_DOMAIN_VRAM)
+ bo->adev->vram_pin_size += amdgpu_bo_size(bo);
+ else
+ bo->adev->gart_pin_size += amdgpu_bo_size(bo);
+ } else {
+ dev_err(bo->adev->dev, "%p pin failed\n", bo);
+ }
+ return r;
+}
+
+int amdgpu_bo_pin(struct amdgpu_bo *bo, u32 domain, u64 *gpu_addr)
+{
+ return amdgpu_bo_pin_restricted(bo, domain, 0, 0, gpu_addr);
+}
+
+int amdgpu_bo_unpin(struct amdgpu_bo *bo)
+{
+ int r, i;
+
+ if (!bo->pin_count) {
+ dev_warn(bo->adev->dev, "%p unpin not necessary\n", bo);
+ return 0;
+ }
+ bo->pin_count--;
+ if (bo->pin_count)
+ return 0;
+ for (i = 0; i < bo->placement.num_placement; i++) {
+ bo->placements[i].lpfn = 0;
+ bo->placements[i].flags &= ~TTM_PL_FLAG_NO_EVICT;
+ }
+ r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false);
+ if (likely(r == 0)) {
+ if (bo->tbo.mem.mem_type == TTM_PL_VRAM)
+ bo->adev->vram_pin_size -= amdgpu_bo_size(bo);
+ else
+ bo->adev->gart_pin_size -= amdgpu_bo_size(bo);
+ } else {
+ dev_err(bo->adev->dev, "%p validate failed for unpin\n", bo);
+ }
+ return r;
+}
+
+int amdgpu_bo_evict_vram(struct amdgpu_device *adev)
+{
+ /* late 2.6.33 fix IGP hibernate - we need pm ops to do this correct */
+ if (0 && (adev->flags & AMD_IS_APU)) {
+ /* Useless to evict on IGP chips */
+ return 0;
+ }
+ return ttm_bo_evict_mm(&adev->mman.bdev, TTM_PL_VRAM);
+}
+
+void amdgpu_bo_force_delete(struct amdgpu_device *adev)
+{
+ struct amdgpu_bo *bo, *n;
+
+ if (list_empty(&adev->gem.objects)) {
+ return;
+ }
+ dev_err(adev->dev, "Userspace still has active objects !\n");
+ list_for_each_entry_safe(bo, n, &adev->gem.objects, list) {
+ dev_err(adev->dev, "%p %p %lu %lu force free\n",
+ &bo->gem_base, bo, (unsigned long)bo->gem_base.size,
+ *((unsigned long *)&bo->gem_base.refcount));
+ mutex_lock(&bo->adev->gem.mutex);
+ list_del_init(&bo->list);
+ mutex_unlock(&bo->adev->gem.mutex);
+ /* this should unref the ttm bo */
+ drm_gem_object_unreference_unlocked(&bo->gem_base);
+ }
+}
+
+int amdgpu_bo_init(struct amdgpu_device *adev)
+{
+ /* Add an MTRR for the VRAM */
+ adev->mc.vram_mtrr = arch_phys_wc_add(adev->mc.aper_base,
+ adev->mc.aper_size);
+ DRM_INFO("Detected VRAM RAM=%lluM, BAR=%lluM\n",
+ adev->mc.mc_vram_size >> 20,
+ (unsigned long long)adev->mc.aper_size >> 20);
+ DRM_INFO("RAM width %dbits DDR\n",
+ adev->mc.vram_width);
+ return amdgpu_ttm_init(adev);
+}
+
+void amdgpu_bo_fini(struct amdgpu_device *adev)
+{
+ amdgpu_ttm_fini(adev);
+ arch_phys_wc_del(adev->mc.vram_mtrr);
+}
+
+int amdgpu_bo_fbdev_mmap(struct amdgpu_bo *bo,
+ struct vm_area_struct *vma)
+{
+ return ttm_fbdev_mmap(vma, &bo->tbo);
+}
+
+int amdgpu_bo_set_tiling_flags(struct amdgpu_bo *bo, u64 tiling_flags)
+{
+ if (AMDGPU_TILING_GET(tiling_flags, TILE_SPLIT) > 6)
+ return -EINVAL;
+
+ bo->tiling_flags = tiling_flags;
+ return 0;
+}
+
+void amdgpu_bo_get_tiling_flags(struct amdgpu_bo *bo, u64 *tiling_flags)
+{
+ lockdep_assert_held(&bo->tbo.resv->lock.base);
+
+ if (tiling_flags)
+ *tiling_flags = bo->tiling_flags;
+}
+
+int amdgpu_bo_set_metadata (struct amdgpu_bo *bo, void *metadata,
+ uint32_t metadata_size, uint64_t flags)
+{
+ void *buffer;
+
+ if (!metadata_size) {
+ if (bo->metadata_size) {
+ kfree(bo->metadata);
+ bo->metadata_size = 0;
+ }
+ return 0;
+ }
+
+ if (metadata == NULL)
+ return -EINVAL;
+
+ buffer = kmemdup(metadata, metadata_size, GFP_KERNEL);
+ if (buffer == NULL)
+ return -ENOMEM;
+
+ kfree(bo->metadata);
+ bo->metadata_flags = flags;
+ bo->metadata = buffer;
+ bo->metadata_size = metadata_size;
+
+ return 0;
+}
+
+int amdgpu_bo_get_metadata(struct amdgpu_bo *bo, void *buffer,
+ size_t buffer_size, uint32_t *metadata_size,
+ uint64_t *flags)
+{
+ if (!buffer && !metadata_size)
+ return -EINVAL;
+
+ if (buffer) {
+ if (buffer_size < bo->metadata_size)
+ return -EINVAL;
+
+ if (bo->metadata_size)
+ memcpy(buffer, bo->metadata, bo->metadata_size);
+ }
+
+ if (metadata_size)
+ *metadata_size = bo->metadata_size;
+ if (flags)
+ *flags = bo->metadata_flags;
+
+ return 0;
+}
+
+void amdgpu_bo_move_notify(struct ttm_buffer_object *bo,
+ struct ttm_mem_reg *new_mem)
+{
+ struct amdgpu_bo *rbo;
+
+ if (!amdgpu_ttm_bo_is_amdgpu_bo(bo))
+ return;
+
+ rbo = container_of(bo, struct amdgpu_bo, tbo);
+ amdgpu_vm_bo_invalidate(rbo->adev, rbo);
+
+ /* update statistics */
+ if (!new_mem)
+ return;
+
+ /* move_notify is called before move happens */
+ amdgpu_update_memory_usage(rbo->adev, &bo->mem, new_mem);
+}
+
+int amdgpu_bo_fault_reserve_notify(struct ttm_buffer_object *bo)
+{
+ struct amdgpu_device *adev;
+ struct amdgpu_bo *abo;
+ unsigned long offset, size, lpfn;
+ int i, r;
+
+ if (!amdgpu_ttm_bo_is_amdgpu_bo(bo))
+ return 0;
+
+ abo = container_of(bo, struct amdgpu_bo, tbo);
+ adev = abo->adev;
+ if (bo->mem.mem_type != TTM_PL_VRAM)
+ return 0;
+
+ size = bo->mem.num_pages << PAGE_SHIFT;
+ offset = bo->mem.start << PAGE_SHIFT;
+ if ((offset + size) <= adev->mc.visible_vram_size)
+ return 0;
+
+ /* hurrah the memory is not visible ! */
+ amdgpu_ttm_placement_from_domain(abo, AMDGPU_GEM_DOMAIN_VRAM);
+ lpfn = adev->mc.visible_vram_size >> PAGE_SHIFT;
+ for (i = 0; i < abo->placement.num_placement; i++) {
+ /* Force into visible VRAM */
+ if ((abo->placements[i].flags & TTM_PL_FLAG_VRAM) &&
+ (!abo->placements[i].lpfn || abo->placements[i].lpfn > lpfn))
+ abo->placements[i].lpfn = lpfn;
+ }
+ r = ttm_bo_validate(bo, &abo->placement, false, false);
+ if (unlikely(r == -ENOMEM)) {
+ amdgpu_ttm_placement_from_domain(abo, AMDGPU_GEM_DOMAIN_GTT);
+ return ttm_bo_validate(bo, &abo->placement, false, false);
+ } else if (unlikely(r != 0)) {
+ return r;
+ }
+
+ offset = bo->mem.start << PAGE_SHIFT;
+ /* this should never happen */
+ if ((offset + size) > adev->mc.visible_vram_size)
+ return -EINVAL;
+
+ return 0;
+}
+
+/**
+ * amdgpu_bo_fence - add fence to buffer object
+ *
+ * @bo: buffer object in question
+ * @fence: fence to add
+ * @shared: true if fence should be added shared
+ *
+ */
+void amdgpu_bo_fence(struct amdgpu_bo *bo, struct fence *fence,
+ bool shared)
+{
+ struct reservation_object *resv = bo->tbo.resv;
+
+ if (shared)
+ reservation_object_add_shared_fence(resv, fence);
+ else
+ reservation_object_add_excl_fence(resv, fence);
+}
Code Review / kvmfornfv.git / blobdiff