summaryrefslogtreecommitdiffstats
path: root/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
commit5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch)
treea94efe259b9009378be6d90eb30d2b019d95c194 /drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
parentInitial commit. (diff)
downloadlinux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.tar.xz
linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.zip
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_object.c')
-rw-r--r--drivers/gpu/drm/amd/amdgpu/amdgpu_object.c1540
1 files changed, 1540 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
new file mode 100644
index 000000000..6937f8134
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -0,0 +1,1540 @@
+/*
+ * 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 <linux/dma-buf.h>
+
+#include <drm/amdgpu_drm.h>
+#include <drm/drm_cache.h>
+#include "amdgpu.h"
+#include "amdgpu_trace.h"
+#include "amdgpu_amdkfd.h"
+
+/**
+ * DOC: amdgpu_object
+ *
+ * This defines the interfaces to operate on an &amdgpu_bo buffer object which
+ * represents memory used by driver (VRAM, system memory, etc.). The driver
+ * provides DRM/GEM APIs to userspace. DRM/GEM APIs then use these interfaces
+ * to create/destroy/set buffer object which are then managed by the kernel TTM
+ * memory manager.
+ * The interfaces are also used internally by kernel clients, including gfx,
+ * uvd, etc. for kernel managed allocations used by the GPU.
+ *
+ */
+
+/**
+ * amdgpu_bo_subtract_pin_size - Remove BO from pin_size accounting
+ *
+ * @bo: &amdgpu_bo buffer object
+ *
+ * This function is called when a BO stops being pinned, and updates the
+ * &amdgpu_device pin_size values accordingly.
+ */
+static void amdgpu_bo_subtract_pin_size(struct amdgpu_bo *bo)
+{
+ struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
+
+ if (bo->tbo.mem.mem_type == TTM_PL_VRAM) {
+ atomic64_sub(amdgpu_bo_size(bo), &adev->vram_pin_size);
+ atomic64_sub(amdgpu_vram_mgr_bo_visible_size(bo),
+ &adev->visible_pin_size);
+ } else if (bo->tbo.mem.mem_type == TTM_PL_TT) {
+ atomic64_sub(amdgpu_bo_size(bo), &adev->gart_pin_size);
+ }
+}
+
+static void amdgpu_bo_destroy(struct ttm_buffer_object *tbo)
+{
+ struct amdgpu_device *adev = amdgpu_ttm_adev(tbo->bdev);
+ struct amdgpu_bo *bo = ttm_to_amdgpu_bo(tbo);
+
+ if (bo->pin_count > 0)
+ amdgpu_bo_subtract_pin_size(bo);
+
+ amdgpu_bo_kunmap(bo);
+
+ if (bo->tbo.base.import_attach)
+ drm_prime_gem_destroy(&bo->tbo.base, bo->tbo.sg);
+ drm_gem_object_release(&bo->tbo.base);
+ /* in case amdgpu_device_recover_vram got NULL of bo->parent */
+ if (!list_empty(&bo->shadow_list)) {
+ mutex_lock(&adev->shadow_list_lock);
+ list_del_init(&bo->shadow_list);
+ mutex_unlock(&adev->shadow_list_lock);
+ }
+ amdgpu_bo_unref(&bo->parent);
+
+ kfree(bo->metadata);
+ kfree(bo);
+}
+
+/**
+ * amdgpu_bo_is_amdgpu_bo - check if the buffer object is an &amdgpu_bo
+ * @bo: buffer object to be checked
+ *
+ * Uses destroy function associated with the object to determine if this is
+ * an &amdgpu_bo.
+ *
+ * Returns:
+ * true if the object belongs to &amdgpu_bo, false if not.
+ */
+bool amdgpu_bo_is_amdgpu_bo(struct ttm_buffer_object *bo)
+{
+ if (bo->destroy == &amdgpu_bo_destroy)
+ return true;
+ return false;
+}
+
+/**
+ * amdgpu_bo_placement_from_domain - set buffer's placement
+ * @abo: &amdgpu_bo buffer object whose placement is to be set
+ * @domain: requested domain
+ *
+ * Sets buffer's placement according to requested domain and the buffer's
+ * flags.
+ */
+void amdgpu_bo_placement_from_domain(struct amdgpu_bo *abo, u32 domain)
+{
+ struct amdgpu_device *adev = amdgpu_ttm_adev(abo->tbo.bdev);
+ struct ttm_placement *placement = &abo->placement;
+ struct ttm_place *places = abo->placements;
+ u64 flags = abo->flags;
+ u32 c = 0;
+
+ if (domain & AMDGPU_GEM_DOMAIN_VRAM) {
+ unsigned visible_pfn = adev->gmc.visible_vram_size >> PAGE_SHIFT;
+
+ places[c].fpfn = 0;
+ places[c].lpfn = 0;
+ places[c].mem_type = TTM_PL_VRAM;
+ places[c].flags = TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED;
+
+ if (flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED)
+ places[c].lpfn = visible_pfn;
+ else
+ places[c].flags |= TTM_PL_FLAG_TOPDOWN;
+
+ if (flags & AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS)
+ places[c].flags |= TTM_PL_FLAG_CONTIGUOUS;
+ c++;
+ }
+
+ if (domain & AMDGPU_GEM_DOMAIN_GTT) {
+ places[c].fpfn = 0;
+ places[c].lpfn = 0;
+ places[c].mem_type = TTM_PL_TT;
+ places[c].flags = 0;
+ if (flags & AMDGPU_GEM_CREATE_CPU_GTT_USWC)
+ places[c].flags |= TTM_PL_FLAG_WC |
+ TTM_PL_FLAG_UNCACHED;
+ else
+ places[c].flags |= TTM_PL_FLAG_CACHED;
+ c++;
+ }
+
+ if (domain & AMDGPU_GEM_DOMAIN_CPU) {
+ places[c].fpfn = 0;
+ places[c].lpfn = 0;
+ places[c].mem_type = TTM_PL_SYSTEM;
+ places[c].flags = 0;
+ if (flags & AMDGPU_GEM_CREATE_CPU_GTT_USWC)
+ places[c].flags |= TTM_PL_FLAG_WC |
+ TTM_PL_FLAG_UNCACHED;
+ else
+ places[c].flags |= TTM_PL_FLAG_CACHED;
+ c++;
+ }
+
+ if (domain & AMDGPU_GEM_DOMAIN_GDS) {
+ places[c].fpfn = 0;
+ places[c].lpfn = 0;
+ places[c].mem_type = AMDGPU_PL_GDS;
+ places[c].flags = TTM_PL_FLAG_UNCACHED;
+ c++;
+ }
+
+ if (domain & AMDGPU_GEM_DOMAIN_GWS) {
+ places[c].fpfn = 0;
+ places[c].lpfn = 0;
+ places[c].mem_type = AMDGPU_PL_GWS;
+ places[c].flags = TTM_PL_FLAG_UNCACHED;
+ c++;
+ }
+
+ if (domain & AMDGPU_GEM_DOMAIN_OA) {
+ places[c].fpfn = 0;
+ places[c].lpfn = 0;
+ places[c].mem_type = AMDGPU_PL_OA;
+ places[c].flags = TTM_PL_FLAG_UNCACHED;
+ c++;
+ }
+
+ if (!c) {
+ places[c].fpfn = 0;
+ places[c].lpfn = 0;
+ places[c].mem_type = TTM_PL_SYSTEM;
+ places[c].flags = TTM_PL_MASK_CACHING;
+ c++;
+ }
+
+ BUG_ON(c > AMDGPU_BO_MAX_PLACEMENTS);
+
+ placement->num_placement = c;
+ placement->placement = places;
+
+ placement->num_busy_placement = c;
+ placement->busy_placement = places;
+}
+
+/**
+ * amdgpu_bo_create_reserved - create reserved BO for kernel use
+ *
+ * @adev: amdgpu device object
+ * @size: size for the new BO
+ * @align: alignment for the new BO
+ * @domain: where to place it
+ * @bo_ptr: used to initialize BOs in structures
+ * @gpu_addr: GPU addr of the pinned BO
+ * @cpu_addr: optional CPU address mapping
+ *
+ * Allocates and pins a BO for kernel internal use, and returns it still
+ * reserved.
+ *
+ * Note: For bo_ptr new BO is only created if bo_ptr points to NULL.
+ *
+ * Returns:
+ * 0 on success, negative error code otherwise.
+ */
+int amdgpu_bo_create_reserved(struct amdgpu_device *adev,
+ unsigned long size, int align,
+ u32 domain, struct amdgpu_bo **bo_ptr,
+ u64 *gpu_addr, void **cpu_addr)
+{
+ struct amdgpu_bo_param bp;
+ bool free = false;
+ int r;
+
+ if (!size) {
+ amdgpu_bo_unref(bo_ptr);
+ return 0;
+ }
+
+ memset(&bp, 0, sizeof(bp));
+ bp.size = size;
+ bp.byte_align = align;
+ bp.domain = domain;
+ bp.flags = cpu_addr ? AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED
+ : AMDGPU_GEM_CREATE_NO_CPU_ACCESS;
+ bp.flags |= AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS;
+ bp.type = ttm_bo_type_kernel;
+ bp.resv = NULL;
+
+ if (!*bo_ptr) {
+ r = amdgpu_bo_create(adev, &bp, bo_ptr);
+ if (r) {
+ dev_err(adev->dev, "(%d) failed to allocate kernel bo\n",
+ r);
+ return r;
+ }
+ free = true;
+ }
+
+ r = amdgpu_bo_reserve(*bo_ptr, false);
+ if (r) {
+ dev_err(adev->dev, "(%d) failed to reserve kernel bo\n", r);
+ goto error_free;
+ }
+
+ r = amdgpu_bo_pin(*bo_ptr, domain);
+ if (r) {
+ dev_err(adev->dev, "(%d) kernel bo pin failed\n", r);
+ goto error_unreserve;
+ }
+
+ r = amdgpu_ttm_alloc_gart(&(*bo_ptr)->tbo);
+ if (r) {
+ dev_err(adev->dev, "%p bind failed\n", *bo_ptr);
+ goto error_unpin;
+ }
+
+ if (gpu_addr)
+ *gpu_addr = amdgpu_bo_gpu_offset(*bo_ptr);
+
+ if (cpu_addr) {
+ r = amdgpu_bo_kmap(*bo_ptr, cpu_addr);
+ if (r) {
+ dev_err(adev->dev, "(%d) kernel bo map failed\n", r);
+ goto error_unpin;
+ }
+ }
+
+ return 0;
+
+error_unpin:
+ amdgpu_bo_unpin(*bo_ptr);
+error_unreserve:
+ amdgpu_bo_unreserve(*bo_ptr);
+
+error_free:
+ if (free)
+ amdgpu_bo_unref(bo_ptr);
+
+ return r;
+}
+
+/**
+ * amdgpu_bo_create_kernel - create BO for kernel use
+ *
+ * @adev: amdgpu device object
+ * @size: size for the new BO
+ * @align: alignment for the new BO
+ * @domain: where to place it
+ * @bo_ptr: used to initialize BOs in structures
+ * @gpu_addr: GPU addr of the pinned BO
+ * @cpu_addr: optional CPU address mapping
+ *
+ * Allocates and pins a BO for kernel internal use.
+ *
+ * Note: For bo_ptr new BO is only created if bo_ptr points to NULL.
+ *
+ * Returns:
+ * 0 on success, negative error code otherwise.
+ */
+int amdgpu_bo_create_kernel(struct amdgpu_device *adev,
+ unsigned long size, int align,
+ u32 domain, struct amdgpu_bo **bo_ptr,
+ u64 *gpu_addr, void **cpu_addr)
+{
+ int r;
+
+ r = amdgpu_bo_create_reserved(adev, size, align, domain, bo_ptr,
+ gpu_addr, cpu_addr);
+
+ if (r)
+ return r;
+
+ if (*bo_ptr)
+ amdgpu_bo_unreserve(*bo_ptr);
+
+ return 0;
+}
+
+/**
+ * amdgpu_bo_create_kernel_at - create BO for kernel use at specific location
+ *
+ * @adev: amdgpu device object
+ * @offset: offset of the BO
+ * @size: size of the BO
+ * @domain: where to place it
+ * @bo_ptr: used to initialize BOs in structures
+ * @cpu_addr: optional CPU address mapping
+ *
+ * Creates a kernel BO at a specific offset in the address space of the domain.
+ *
+ * Returns:
+ * 0 on success, negative error code otherwise.
+ */
+int amdgpu_bo_create_kernel_at(struct amdgpu_device *adev,
+ uint64_t offset, uint64_t size, uint32_t domain,
+ struct amdgpu_bo **bo_ptr, void **cpu_addr)
+{
+ struct ttm_operation_ctx ctx = { false, false };
+ unsigned int i;
+ int r;
+
+ offset &= PAGE_MASK;
+ size = ALIGN(size, PAGE_SIZE);
+
+ r = amdgpu_bo_create_reserved(adev, size, PAGE_SIZE, domain, bo_ptr,
+ NULL, cpu_addr);
+ if (r)
+ return r;
+
+ if ((*bo_ptr) == NULL)
+ return 0;
+
+ /*
+ * Remove the original mem node and create a new one at the request
+ * position.
+ */
+ if (cpu_addr)
+ amdgpu_bo_kunmap(*bo_ptr);
+
+ ttm_resource_free(&(*bo_ptr)->tbo, &(*bo_ptr)->tbo.mem);
+
+ for (i = 0; i < (*bo_ptr)->placement.num_placement; ++i) {
+ (*bo_ptr)->placements[i].fpfn = offset >> PAGE_SHIFT;
+ (*bo_ptr)->placements[i].lpfn = (offset + size) >> PAGE_SHIFT;
+ }
+ r = ttm_bo_mem_space(&(*bo_ptr)->tbo, &(*bo_ptr)->placement,
+ &(*bo_ptr)->tbo.mem, &ctx);
+ if (r)
+ goto error;
+
+ if (cpu_addr) {
+ r = amdgpu_bo_kmap(*bo_ptr, cpu_addr);
+ if (r)
+ goto error;
+ }
+
+ amdgpu_bo_unreserve(*bo_ptr);
+ return 0;
+
+error:
+ amdgpu_bo_unreserve(*bo_ptr);
+ amdgpu_bo_unref(bo_ptr);
+ return r;
+}
+
+/**
+ * amdgpu_bo_free_kernel - free BO for kernel use
+ *
+ * @bo: amdgpu BO to free
+ * @gpu_addr: pointer to where the BO's GPU memory space address was stored
+ * @cpu_addr: pointer to where the BO's CPU memory space address was stored
+ *
+ * unmaps and unpin a BO for kernel internal use.
+ */
+void amdgpu_bo_free_kernel(struct amdgpu_bo **bo, u64 *gpu_addr,
+ void **cpu_addr)
+{
+ if (*bo == NULL)
+ return;
+
+ if (likely(amdgpu_bo_reserve(*bo, true) == 0)) {
+ if (cpu_addr)
+ amdgpu_bo_kunmap(*bo);
+
+ amdgpu_bo_unpin(*bo);
+ amdgpu_bo_unreserve(*bo);
+ }
+ amdgpu_bo_unref(bo);
+
+ if (gpu_addr)
+ *gpu_addr = 0;
+
+ if (cpu_addr)
+ *cpu_addr = NULL;
+}
+
+/* Validate bo size is bit bigger then the request domain */
+static bool amdgpu_bo_validate_size(struct amdgpu_device *adev,
+ unsigned long size, u32 domain)
+{
+ struct ttm_resource_manager *man = NULL;
+
+ /*
+ * If GTT is part of requested domains the check must succeed to
+ * allow fall back to GTT
+ */
+ if (domain & AMDGPU_GEM_DOMAIN_GTT) {
+ man = ttm_manager_type(&adev->mman.bdev, TTM_PL_TT);
+
+ if (size < (man->size << PAGE_SHIFT))
+ return true;
+ else
+ goto fail;
+ }
+
+ if (domain & AMDGPU_GEM_DOMAIN_VRAM) {
+ man = ttm_manager_type(&adev->mman.bdev, TTM_PL_VRAM);
+
+ if (size < (man->size << PAGE_SHIFT))
+ return true;
+ else
+ goto fail;
+ }
+
+
+ /* TODO add more domains checks, such as AMDGPU_GEM_DOMAIN_CPU */
+ return true;
+
+fail:
+ DRM_DEBUG("BO size %lu > total memory in domain: %llu\n", size,
+ man->size << PAGE_SHIFT);
+ return false;
+}
+
+bool amdgpu_bo_support_uswc(u64 bo_flags)
+{
+
+#ifdef CONFIG_X86_32
+ /* XXX: Write-combined CPU mappings of GTT seem broken on 32-bit
+ * See https://bugs.freedesktop.org/show_bug.cgi?id=84627
+ */
+ return false;
+#elif defined(CONFIG_X86) && !defined(CONFIG_X86_PAT)
+ /* Don't try to enable write-combining when it can't work, or things
+ * may be slow
+ * See https://bugs.freedesktop.org/show_bug.cgi?id=88758
+ */
+
+#ifndef CONFIG_COMPILE_TEST
+#warning Please enable CONFIG_MTRR and CONFIG_X86_PAT for better performance \
+ thanks to write-combining
+#endif
+
+ if (bo_flags & AMDGPU_GEM_CREATE_CPU_GTT_USWC)
+ DRM_INFO_ONCE("Please enable CONFIG_MTRR and CONFIG_X86_PAT for "
+ "better performance thanks to write-combining\n");
+ return false;
+#else
+ /* For architectures that don't support WC memory,
+ * mask out the WC flag from the BO
+ */
+ if (!drm_arch_can_wc_memory())
+ return false;
+
+ return true;
+#endif
+}
+
+static int amdgpu_bo_do_create(struct amdgpu_device *adev,
+ struct amdgpu_bo_param *bp,
+ struct amdgpu_bo **bo_ptr)
+{
+ struct ttm_operation_ctx ctx = {
+ .interruptible = (bp->type != ttm_bo_type_kernel),
+ .no_wait_gpu = bp->no_wait_gpu,
+ .resv = bp->resv,
+ .flags = bp->type != ttm_bo_type_kernel ?
+ TTM_OPT_FLAG_ALLOW_RES_EVICT : 0
+ };
+ struct amdgpu_bo *bo;
+ unsigned long page_align, size = bp->size;
+ size_t acc_size;
+ int r;
+
+ /* Note that GDS/GWS/OA allocates 1 page per byte/resource. */
+ if (bp->domain & (AMDGPU_GEM_DOMAIN_GWS | AMDGPU_GEM_DOMAIN_OA)) {
+ /* GWS and OA don't need any alignment. */
+ page_align = bp->byte_align;
+ size <<= PAGE_SHIFT;
+ } else if (bp->domain & AMDGPU_GEM_DOMAIN_GDS) {
+ /* Both size and alignment must be a multiple of 4. */
+ page_align = ALIGN(bp->byte_align, 4);
+ size = ALIGN(size, 4) << PAGE_SHIFT;
+ } else {
+ /* Memory should be aligned at least to a page size. */
+ page_align = ALIGN(bp->byte_align, PAGE_SIZE) >> PAGE_SHIFT;
+ size = ALIGN(size, PAGE_SIZE);
+ }
+
+ if (!amdgpu_bo_validate_size(adev, size, bp->domain))
+ return -ENOMEM;
+
+ *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;
+ drm_gem_private_object_init(adev_to_drm(adev), &bo->tbo.base, size);
+ INIT_LIST_HEAD(&bo->shadow_list);
+ bo->vm_bo = NULL;
+ bo->preferred_domains = bp->preferred_domain ? bp->preferred_domain :
+ bp->domain;
+ bo->allowed_domains = bo->preferred_domains;
+ if (bp->type != ttm_bo_type_kernel &&
+ bo->allowed_domains == AMDGPU_GEM_DOMAIN_VRAM)
+ bo->allowed_domains |= AMDGPU_GEM_DOMAIN_GTT;
+
+ bo->flags = bp->flags;
+
+ if (!amdgpu_bo_support_uswc(bo->flags))
+ bo->flags &= ~AMDGPU_GEM_CREATE_CPU_GTT_USWC;
+
+ bo->tbo.bdev = &adev->mman.bdev;
+ if (bp->domain & (AMDGPU_GEM_DOMAIN_GWS | AMDGPU_GEM_DOMAIN_OA |
+ AMDGPU_GEM_DOMAIN_GDS))
+ amdgpu_bo_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_CPU);
+ else
+ amdgpu_bo_placement_from_domain(bo, bp->domain);
+ if (bp->type == ttm_bo_type_kernel)
+ bo->tbo.priority = 1;
+
+ r = ttm_bo_init_reserved(&adev->mman.bdev, &bo->tbo, size, bp->type,
+ &bo->placement, page_align, &ctx, acc_size,
+ NULL, bp->resv, &amdgpu_bo_destroy);
+ if (unlikely(r != 0))
+ return r;
+
+ if (!amdgpu_gmc_vram_full_visible(&adev->gmc) &&
+ bo->tbo.mem.mem_type == TTM_PL_VRAM &&
+ bo->tbo.mem.start < adev->gmc.visible_vram_size >> PAGE_SHIFT)
+ amdgpu_cs_report_moved_bytes(adev, ctx.bytes_moved,
+ ctx.bytes_moved);
+ else
+ amdgpu_cs_report_moved_bytes(adev, ctx.bytes_moved, 0);
+
+ if (bp->flags & AMDGPU_GEM_CREATE_VRAM_CLEARED &&
+ bo->tbo.mem.mem_type == TTM_PL_VRAM) {
+ struct dma_fence *fence;
+
+ r = amdgpu_fill_buffer(bo, 0, bo->tbo.base.resv, &fence);
+ if (unlikely(r))
+ goto fail_unreserve;
+
+ amdgpu_bo_fence(bo, fence, false);
+ dma_fence_put(bo->tbo.moving);
+ bo->tbo.moving = dma_fence_get(fence);
+ dma_fence_put(fence);
+ }
+ if (!bp->resv)
+ amdgpu_bo_unreserve(bo);
+ *bo_ptr = bo;
+
+ trace_amdgpu_bo_create(bo);
+
+ /* Treat CPU_ACCESS_REQUIRED only as a hint if given by UMD */
+ if (bp->type == ttm_bo_type_device)
+ bo->flags &= ~AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
+
+ return 0;
+
+fail_unreserve:
+ if (!bp->resv)
+ dma_resv_unlock(bo->tbo.base.resv);
+ amdgpu_bo_unref(&bo);
+ return r;
+}
+
+static int amdgpu_bo_create_shadow(struct amdgpu_device *adev,
+ unsigned long size,
+ struct amdgpu_bo *bo)
+{
+ struct amdgpu_bo_param bp;
+ int r;
+
+ if (bo->shadow)
+ return 0;
+
+ memset(&bp, 0, sizeof(bp));
+ bp.size = size;
+ bp.domain = AMDGPU_GEM_DOMAIN_GTT;
+ bp.flags = AMDGPU_GEM_CREATE_CPU_GTT_USWC |
+ AMDGPU_GEM_CREATE_SHADOW;
+ bp.type = ttm_bo_type_kernel;
+ bp.resv = bo->tbo.base.resv;
+
+ r = amdgpu_bo_do_create(adev, &bp, &bo->shadow);
+ if (!r) {
+ bo->shadow->parent = amdgpu_bo_ref(bo);
+ mutex_lock(&adev->shadow_list_lock);
+ list_add_tail(&bo->shadow->shadow_list, &adev->shadow_list);
+ mutex_unlock(&adev->shadow_list_lock);
+ }
+
+ return r;
+}
+
+/**
+ * amdgpu_bo_create - create an &amdgpu_bo buffer object
+ * @adev: amdgpu device object
+ * @bp: parameters to be used for the buffer object
+ * @bo_ptr: pointer to the buffer object pointer
+ *
+ * Creates an &amdgpu_bo buffer object; and if requested, also creates a
+ * shadow object.
+ * Shadow object is used to backup the original buffer object, and is always
+ * in GTT.
+ *
+ * Returns:
+ * 0 for success or a negative error code on failure.
+ */
+int amdgpu_bo_create(struct amdgpu_device *adev,
+ struct amdgpu_bo_param *bp,
+ struct amdgpu_bo **bo_ptr)
+{
+ u64 flags = bp->flags;
+ int r;
+
+ bp->flags = bp->flags & ~AMDGPU_GEM_CREATE_SHADOW;
+ r = amdgpu_bo_do_create(adev, bp, bo_ptr);
+ if (r)
+ return r;
+
+ if ((flags & AMDGPU_GEM_CREATE_SHADOW) && !(adev->flags & AMD_IS_APU)) {
+ if (!bp->resv)
+ WARN_ON(dma_resv_lock((*bo_ptr)->tbo.base.resv,
+ NULL));
+
+ r = amdgpu_bo_create_shadow(adev, bp->size, *bo_ptr);
+
+ if (!bp->resv)
+ dma_resv_unlock((*bo_ptr)->tbo.base.resv);
+
+ if (r)
+ amdgpu_bo_unref(bo_ptr);
+ }
+
+ return r;
+}
+
+/**
+ * amdgpu_bo_validate - validate an &amdgpu_bo buffer object
+ * @bo: pointer to the buffer object
+ *
+ * Sets placement according to domain; and changes placement and caching
+ * policy of the buffer object according to the placement.
+ * This is used for validating shadow bos. It calls ttm_bo_validate() to
+ * make sure the buffer is resident where it needs to be.
+ *
+ * Returns:
+ * 0 for success or a negative error code on failure.
+ */
+int amdgpu_bo_validate(struct amdgpu_bo *bo)
+{
+ struct ttm_operation_ctx ctx = { false, false };
+ uint32_t domain;
+ int r;
+
+ if (bo->pin_count)
+ return 0;
+
+ domain = bo->preferred_domains;
+
+retry:
+ amdgpu_bo_placement_from_domain(bo, domain);
+ r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
+ if (unlikely(r == -ENOMEM) && domain != bo->allowed_domains) {
+ domain = bo->allowed_domains;
+ goto retry;
+ }
+
+ return r;
+}
+
+/**
+ * amdgpu_bo_restore_shadow - restore an &amdgpu_bo shadow
+ *
+ * @shadow: &amdgpu_bo shadow to be restored
+ * @fence: dma_fence associated with the operation
+ *
+ * Copies a buffer object's shadow content back to the object.
+ * This is used for recovering a buffer from its shadow in case of a gpu
+ * reset where vram context may be lost.
+ *
+ * Returns:
+ * 0 for success or a negative error code on failure.
+ */
+int amdgpu_bo_restore_shadow(struct amdgpu_bo *shadow, struct dma_fence **fence)
+
+{
+ struct amdgpu_device *adev = amdgpu_ttm_adev(shadow->tbo.bdev);
+ struct amdgpu_ring *ring = adev->mman.buffer_funcs_ring;
+ uint64_t shadow_addr, parent_addr;
+
+ shadow_addr = amdgpu_bo_gpu_offset(shadow);
+ parent_addr = amdgpu_bo_gpu_offset(shadow->parent);
+
+ return amdgpu_copy_buffer(ring, shadow_addr, parent_addr,
+ amdgpu_bo_size(shadow), NULL, fence,
+ true, false, false);
+}
+
+/**
+ * amdgpu_bo_kmap - map an &amdgpu_bo buffer object
+ * @bo: &amdgpu_bo buffer object to be mapped
+ * @ptr: kernel virtual address to be returned
+ *
+ * Calls ttm_bo_kmap() to set up the kernel virtual mapping; calls
+ * amdgpu_bo_kptr() to get the kernel virtual address.
+ *
+ * Returns:
+ * 0 for success or a negative error code on failure.
+ */
+int amdgpu_bo_kmap(struct amdgpu_bo *bo, void **ptr)
+{
+ void *kptr;
+ long r;
+
+ if (bo->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)
+ return -EPERM;
+
+ kptr = amdgpu_bo_kptr(bo);
+ if (kptr) {
+ if (ptr)
+ *ptr = kptr;
+ return 0;
+ }
+
+ r = dma_resv_wait_timeout_rcu(bo->tbo.base.resv, false, false,
+ MAX_SCHEDULE_TIMEOUT);
+ if (r < 0)
+ return r;
+
+ r = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages, &bo->kmap);
+ if (r)
+ return r;
+
+ if (ptr)
+ *ptr = amdgpu_bo_kptr(bo);
+
+ return 0;
+}
+
+/**
+ * amdgpu_bo_kptr - returns a kernel virtual address of the buffer object
+ * @bo: &amdgpu_bo buffer object
+ *
+ * Calls ttm_kmap_obj_virtual() to get the kernel virtual address
+ *
+ * Returns:
+ * the virtual address of a buffer object area.
+ */
+void *amdgpu_bo_kptr(struct amdgpu_bo *bo)
+{
+ bool is_iomem;
+
+ return ttm_kmap_obj_virtual(&bo->kmap, &is_iomem);
+}
+
+/**
+ * amdgpu_bo_kunmap - unmap an &amdgpu_bo buffer object
+ * @bo: &amdgpu_bo buffer object to be unmapped
+ *
+ * Unmaps a kernel map set up by amdgpu_bo_kmap().
+ */
+void amdgpu_bo_kunmap(struct amdgpu_bo *bo)
+{
+ if (bo->kmap.bo)
+ ttm_bo_kunmap(&bo->kmap);
+}
+
+/**
+ * amdgpu_bo_ref - reference an &amdgpu_bo buffer object
+ * @bo: &amdgpu_bo buffer object
+ *
+ * References the contained &ttm_buffer_object.
+ *
+ * Returns:
+ * a refcounted pointer to the &amdgpu_bo buffer object.
+ */
+struct amdgpu_bo *amdgpu_bo_ref(struct amdgpu_bo *bo)
+{
+ if (bo == NULL)
+ return NULL;
+
+ ttm_bo_get(&bo->tbo);
+ return bo;
+}
+
+/**
+ * amdgpu_bo_unref - unreference an &amdgpu_bo buffer object
+ * @bo: &amdgpu_bo buffer object
+ *
+ * Unreferences the contained &ttm_buffer_object and clear the pointer
+ */
+void amdgpu_bo_unref(struct amdgpu_bo **bo)
+{
+ struct ttm_buffer_object *tbo;
+
+ if ((*bo) == NULL)
+ return;
+
+ tbo = &((*bo)->tbo);
+ ttm_bo_put(tbo);
+ *bo = NULL;
+}
+
+/**
+ * amdgpu_bo_pin_restricted - pin an &amdgpu_bo buffer object
+ * @bo: &amdgpu_bo buffer object to be pinned
+ * @domain: domain to be pinned to
+ * @min_offset: the start of requested address range
+ * @max_offset: the end of requested address range
+ *
+ * Pins the buffer object according to requested domain and address range. If
+ * the memory is unbound gart memory, binds the pages into gart table. Adjusts
+ * pin_count and pin_size accordingly.
+ *
+ * Pinning means to lock pages in memory along with keeping them at a fixed
+ * offset. It is required when a buffer can not be moved, for example, when
+ * a display buffer is being scanned out.
+ *
+ * Compared with amdgpu_bo_pin(), this function gives more flexibility on
+ * where to pin a buffer if there are specific restrictions on where a buffer
+ * must be located.
+ *
+ * Returns:
+ * 0 for success or a negative error code on failure.
+ */
+int amdgpu_bo_pin_restricted(struct amdgpu_bo *bo, u32 domain,
+ u64 min_offset, u64 max_offset)
+{
+ struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
+ struct ttm_operation_ctx ctx = { false, false };
+ int r, i;
+
+ if (amdgpu_ttm_tt_get_usermm(bo->tbo.ttm))
+ return -EPERM;
+
+ if (WARN_ON_ONCE(min_offset > max_offset))
+ return -EINVAL;
+
+ /* Check domain to be pinned to against preferred domains */
+ if (bo->preferred_domains & domain)
+ domain = bo->preferred_domains & domain;
+
+ /* A shared bo cannot be migrated to VRAM */
+ if (bo->prime_shared_count) {
+ if (domain & AMDGPU_GEM_DOMAIN_GTT)
+ domain = AMDGPU_GEM_DOMAIN_GTT;
+ else
+ return -EINVAL;
+ }
+
+ /* This assumes only APU display buffers are pinned with (VRAM|GTT).
+ * See function amdgpu_display_supported_domains()
+ */
+ domain = amdgpu_bo_get_preferred_pin_domain(adev, domain);
+
+ if (bo->pin_count) {
+ uint32_t mem_type = bo->tbo.mem.mem_type;
+
+ if (!(domain & amdgpu_mem_type_to_domain(mem_type)))
+ return -EINVAL;
+
+ bo->pin_count++;
+
+ if (max_offset != 0) {
+ u64 domain_start = amdgpu_ttm_domain_start(adev,
+ mem_type);
+ WARN_ON_ONCE(max_offset <
+ (amdgpu_bo_gpu_offset(bo) - domain_start));
+ }
+
+ return 0;
+ }
+
+ if (bo->tbo.base.import_attach)
+ dma_buf_pin(bo->tbo.base.import_attach);
+
+ bo->flags |= AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS;
+ /* force to pin into visible video ram */
+ if (!(bo->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS))
+ bo->flags |= AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
+ amdgpu_bo_placement_from_domain(bo, domain);
+ for (i = 0; i < bo->placement.num_placement; i++) {
+ unsigned fpfn, lpfn;
+
+ 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, &ctx);
+ if (unlikely(r)) {
+ dev_err(adev->dev, "%p pin failed\n", bo);
+ goto error;
+ }
+
+ bo->pin_count = 1;
+
+ domain = amdgpu_mem_type_to_domain(bo->tbo.mem.mem_type);
+ if (domain == AMDGPU_GEM_DOMAIN_VRAM) {
+ atomic64_add(amdgpu_bo_size(bo), &adev->vram_pin_size);
+ atomic64_add(amdgpu_vram_mgr_bo_visible_size(bo),
+ &adev->visible_pin_size);
+ } else if (domain == AMDGPU_GEM_DOMAIN_GTT) {
+ atomic64_add(amdgpu_bo_size(bo), &adev->gart_pin_size);
+ }
+
+error:
+ return r;
+}
+
+/**
+ * amdgpu_bo_pin - pin an &amdgpu_bo buffer object
+ * @bo: &amdgpu_bo buffer object to be pinned
+ * @domain: domain to be pinned to
+ *
+ * A simple wrapper to amdgpu_bo_pin_restricted().
+ * Provides a simpler API for buffers that do not have any strict restrictions
+ * on where a buffer must be located.
+ *
+ * Returns:
+ * 0 for success or a negative error code on failure.
+ */
+int amdgpu_bo_pin(struct amdgpu_bo *bo, u32 domain)
+{
+ return amdgpu_bo_pin_restricted(bo, domain, 0, 0);
+}
+
+/**
+ * amdgpu_bo_unpin - unpin an &amdgpu_bo buffer object
+ * @bo: &amdgpu_bo buffer object to be unpinned
+ *
+ * Decreases the pin_count, and clears the flags if pin_count reaches 0.
+ * Changes placement and pin size accordingly.
+ *
+ * Returns:
+ * 0 for success or a negative error code on failure.
+ */
+int amdgpu_bo_unpin(struct amdgpu_bo *bo)
+{
+ struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
+ struct ttm_operation_ctx ctx = { false, false };
+ int r, i;
+
+ if (WARN_ON_ONCE(!bo->pin_count)) {
+ dev_warn(adev->dev, "%p unpin not necessary\n", bo);
+ return 0;
+ }
+ bo->pin_count--;
+ if (bo->pin_count)
+ return 0;
+
+ amdgpu_bo_subtract_pin_size(bo);
+
+ if (bo->tbo.base.import_attach)
+ dma_buf_unpin(bo->tbo.base.import_attach);
+
+ 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, &ctx);
+ if (unlikely(r))
+ dev_err(adev->dev, "%p validate failed for unpin\n", bo);
+
+ return r;
+}
+
+/**
+ * amdgpu_bo_evict_vram - evict VRAM buffers
+ * @adev: amdgpu device object
+ *
+ * Evicts all VRAM buffers on the lru list of the memory type.
+ * Mainly used for evicting vram at suspend time.
+ *
+ * Returns:
+ * 0 for success or a negative error code on failure.
+ */
+int amdgpu_bo_evict_vram(struct amdgpu_device *adev)
+{
+ /* late 2.6.33 fix IGP hibernate - we need pm ops to do this correct */
+#ifndef CONFIG_HIBERNATION
+ if (adev->flags & AMD_IS_APU) {
+ /* Useless to evict on IGP chips */
+ return 0;
+ }
+#endif
+ return ttm_bo_evict_mm(&adev->mman.bdev, TTM_PL_VRAM);
+}
+
+static const char *amdgpu_vram_names[] = {
+ "UNKNOWN",
+ "GDDR1",
+ "DDR2",
+ "GDDR3",
+ "GDDR4",
+ "GDDR5",
+ "HBM",
+ "DDR3",
+ "DDR4",
+ "GDDR6",
+};
+
+/**
+ * amdgpu_bo_init - initialize memory manager
+ * @adev: amdgpu device object
+ *
+ * Calls amdgpu_ttm_init() to initialize amdgpu memory manager.
+ *
+ * Returns:
+ * 0 for success or a negative error code on failure.
+ */
+int amdgpu_bo_init(struct amdgpu_device *adev)
+{
+ /* reserve PAT memory space to WC for VRAM */
+ arch_io_reserve_memtype_wc(adev->gmc.aper_base,
+ adev->gmc.aper_size);
+
+ /* Add an MTRR for the VRAM */
+ adev->gmc.vram_mtrr = arch_phys_wc_add(adev->gmc.aper_base,
+ adev->gmc.aper_size);
+ DRM_INFO("Detected VRAM RAM=%lluM, BAR=%lluM\n",
+ adev->gmc.mc_vram_size >> 20,
+ (unsigned long long)adev->gmc.aper_size >> 20);
+ DRM_INFO("RAM width %dbits %s\n",
+ adev->gmc.vram_width, amdgpu_vram_names[adev->gmc.vram_type]);
+ return amdgpu_ttm_init(adev);
+}
+
+/**
+ * amdgpu_bo_late_init - late init
+ * @adev: amdgpu device object
+ *
+ * Calls amdgpu_ttm_late_init() to free resources used earlier during
+ * initialization.
+ *
+ * Returns:
+ * 0 for success or a negative error code on failure.
+ */
+int amdgpu_bo_late_init(struct amdgpu_device *adev)
+{
+ amdgpu_ttm_late_init(adev);
+
+ return 0;
+}
+
+/**
+ * amdgpu_bo_fini - tear down memory manager
+ * @adev: amdgpu device object
+ *
+ * Reverses amdgpu_bo_init() to tear down memory manager.
+ */
+void amdgpu_bo_fini(struct amdgpu_device *adev)
+{
+ amdgpu_ttm_fini(adev);
+ arch_phys_wc_del(adev->gmc.vram_mtrr);
+ arch_io_free_memtype_wc(adev->gmc.aper_base, adev->gmc.aper_size);
+}
+
+/**
+ * amdgpu_bo_fbdev_mmap - mmap fbdev memory
+ * @bo: &amdgpu_bo buffer object
+ * @vma: vma as input from the fbdev mmap method
+ *
+ * Calls ttm_fbdev_mmap() to mmap fbdev memory if it is backed by a bo.
+ *
+ * Returns:
+ * 0 for success or a negative error code on failure.
+ */
+int amdgpu_bo_fbdev_mmap(struct amdgpu_bo *bo,
+ struct vm_area_struct *vma)
+{
+ if (vma->vm_pgoff != 0)
+ return -EACCES;
+
+ return ttm_bo_mmap_obj(vma, &bo->tbo);
+}
+
+/**
+ * amdgpu_bo_set_tiling_flags - set tiling flags
+ * @bo: &amdgpu_bo buffer object
+ * @tiling_flags: new flags
+ *
+ * Sets buffer object's tiling flags with the new one. Used by GEM ioctl or
+ * kernel driver to set the tiling flags on a buffer.
+ *
+ * Returns:
+ * 0 for success or a negative error code on failure.
+ */
+int amdgpu_bo_set_tiling_flags(struct amdgpu_bo *bo, u64 tiling_flags)
+{
+ struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
+
+ if (adev->family <= AMDGPU_FAMILY_CZ &&
+ AMDGPU_TILING_GET(tiling_flags, TILE_SPLIT) > 6)
+ return -EINVAL;
+
+ bo->tiling_flags = tiling_flags;
+ return 0;
+}
+
+/**
+ * amdgpu_bo_get_tiling_flags - get tiling flags
+ * @bo: &amdgpu_bo buffer object
+ * @tiling_flags: returned flags
+ *
+ * Gets buffer object's tiling flags. Used by GEM ioctl or kernel driver to
+ * set the tiling flags on a buffer.
+ */
+void amdgpu_bo_get_tiling_flags(struct amdgpu_bo *bo, u64 *tiling_flags)
+{
+ dma_resv_assert_held(bo->tbo.base.resv);
+
+ if (tiling_flags)
+ *tiling_flags = bo->tiling_flags;
+}
+
+/**
+ * amdgpu_bo_set_metadata - set metadata
+ * @bo: &amdgpu_bo buffer object
+ * @metadata: new metadata
+ * @metadata_size: size of the new metadata
+ * @flags: flags of the new metadata
+ *
+ * Sets buffer object's metadata, its size and flags.
+ * Used via GEM ioctl.
+ *
+ * Returns:
+ * 0 for success or a negative error code on failure.
+ */
+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 = NULL;
+ 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;
+}
+
+/**
+ * amdgpu_bo_get_metadata - get metadata
+ * @bo: &amdgpu_bo buffer object
+ * @buffer: returned metadata
+ * @buffer_size: size of the buffer
+ * @metadata_size: size of the returned metadata
+ * @flags: flags of the returned metadata
+ *
+ * Gets buffer object's metadata, its size and flags. buffer_size shall not be
+ * less than metadata_size.
+ * Used via GEM ioctl.
+ *
+ * Returns:
+ * 0 for success or a negative error code on failure.
+ */
+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;
+}
+
+/**
+ * amdgpu_bo_move_notify - notification about a memory move
+ * @bo: pointer to a buffer object
+ * @evict: if this move is evicting the buffer from the graphics address space
+ * @new_mem: new information of the bufer object
+ *
+ * Marks the corresponding &amdgpu_bo buffer object as invalid, also performs
+ * bookkeeping.
+ * TTM driver callback which is called when ttm moves a buffer.
+ */
+void amdgpu_bo_move_notify(struct ttm_buffer_object *bo,
+ bool evict,
+ struct ttm_resource *new_mem)
+{
+ struct amdgpu_device *adev = amdgpu_ttm_adev(bo->bdev);
+ struct amdgpu_bo *abo;
+ struct ttm_resource *old_mem = &bo->mem;
+
+ if (!amdgpu_bo_is_amdgpu_bo(bo))
+ return;
+
+ abo = ttm_to_amdgpu_bo(bo);
+ amdgpu_vm_bo_invalidate(adev, abo, evict);
+
+ amdgpu_bo_kunmap(abo);
+
+ if (abo->tbo.base.dma_buf && !abo->tbo.base.import_attach &&
+ bo->mem.mem_type != TTM_PL_SYSTEM)
+ dma_buf_move_notify(abo->tbo.base.dma_buf);
+
+ /* remember the eviction */
+ if (evict)
+ atomic64_inc(&adev->num_evictions);
+
+ /* update statistics */
+ if (!new_mem)
+ return;
+
+ /* move_notify is called before move happens */
+ trace_amdgpu_bo_move(abo, new_mem->mem_type, old_mem->mem_type);
+}
+
+/**
+ * amdgpu_bo_release_notify - notification about a BO being released
+ * @bo: pointer to a buffer object
+ *
+ * Wipes VRAM buffers whose contents should not be leaked before the
+ * memory is released.
+ */
+void amdgpu_bo_release_notify(struct ttm_buffer_object *bo)
+{
+ struct dma_fence *fence = NULL;
+ struct amdgpu_bo *abo;
+ int r;
+
+ if (!amdgpu_bo_is_amdgpu_bo(bo))
+ return;
+
+ abo = ttm_to_amdgpu_bo(bo);
+
+ if (abo->kfd_bo)
+ amdgpu_amdkfd_unreserve_memory_limit(abo);
+
+ /* We only remove the fence if the resv has individualized. */
+ WARN_ON_ONCE(bo->type == ttm_bo_type_kernel
+ && bo->base.resv != &bo->base._resv);
+ if (bo->base.resv == &bo->base._resv)
+ amdgpu_amdkfd_remove_fence_on_pt_pd_bos(abo);
+
+ if (bo->mem.mem_type != TTM_PL_VRAM || !bo->mem.mm_node ||
+ !(abo->flags & AMDGPU_GEM_CREATE_VRAM_WIPE_ON_RELEASE))
+ return;
+
+ if (WARN_ON_ONCE(!dma_resv_trylock(bo->base.resv)))
+ return;
+
+ r = amdgpu_fill_buffer(abo, AMDGPU_POISON, bo->base.resv, &fence);
+ if (!WARN_ON(r)) {
+ amdgpu_bo_fence(abo, fence, false);
+ dma_fence_put(fence);
+ }
+
+ dma_resv_unlock(bo->base.resv);
+}
+
+/**
+ * amdgpu_bo_fault_reserve_notify - notification about a memory fault
+ * @bo: pointer to a buffer object
+ *
+ * Notifies the driver we are taking a fault on this BO and have reserved it,
+ * also performs bookkeeping.
+ * TTM driver callback for dealing with vm faults.
+ *
+ * Returns:
+ * 0 for success or a negative error code on failure.
+ */
+int amdgpu_bo_fault_reserve_notify(struct ttm_buffer_object *bo)
+{
+ struct amdgpu_device *adev = amdgpu_ttm_adev(bo->bdev);
+ struct ttm_operation_ctx ctx = { false, false };
+ struct amdgpu_bo *abo;
+ unsigned long offset, size;
+ int r;
+
+ if (!amdgpu_bo_is_amdgpu_bo(bo))
+ return 0;
+
+ abo = ttm_to_amdgpu_bo(bo);
+
+ /* Remember that this BO was accessed by the CPU */
+ abo->flags |= AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
+
+ 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->gmc.visible_vram_size)
+ return 0;
+
+ /* Can't move a pinned BO to visible VRAM */
+ if (abo->pin_count > 0)
+ return -EINVAL;
+
+ /* hurrah the memory is not visible ! */
+ atomic64_inc(&adev->num_vram_cpu_page_faults);
+ amdgpu_bo_placement_from_domain(abo, AMDGPU_GEM_DOMAIN_VRAM |
+ AMDGPU_GEM_DOMAIN_GTT);
+
+ /* Avoid costly evictions; only set GTT as a busy placement */
+ abo->placement.num_busy_placement = 1;
+ abo->placement.busy_placement = &abo->placements[1];
+
+ r = ttm_bo_validate(bo, &abo->placement, &ctx);
+ if (unlikely(r != 0))
+ return r;
+
+ offset = bo->mem.start << PAGE_SHIFT;
+ /* this should never happen */
+ if (bo->mem.mem_type == TTM_PL_VRAM &&
+ (offset + size) > adev->gmc.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 dma_fence *fence,
+ bool shared)
+{
+ struct dma_resv *resv = bo->tbo.base.resv;
+
+ if (shared)
+ dma_resv_add_shared_fence(resv, fence);
+ else
+ dma_resv_add_excl_fence(resv, fence);
+}
+
+/**
+ * amdgpu_bo_sync_wait_resv - Wait for BO reservation fences
+ *
+ * @adev: amdgpu device pointer
+ * @resv: reservation object to sync to
+ * @sync_mode: synchronization mode
+ * @owner: fence owner
+ * @intr: Whether the wait is interruptible
+ *
+ * Extract the fences from the reservation object and waits for them to finish.
+ *
+ * Returns:
+ * 0 on success, errno otherwise.
+ */
+int amdgpu_bo_sync_wait_resv(struct amdgpu_device *adev, struct dma_resv *resv,
+ enum amdgpu_sync_mode sync_mode, void *owner,
+ bool intr)
+{
+ struct amdgpu_sync sync;
+ int r;
+
+ amdgpu_sync_create(&sync);
+ amdgpu_sync_resv(adev, &sync, resv, sync_mode, owner);
+ r = amdgpu_sync_wait(&sync, intr);
+ amdgpu_sync_free(&sync);
+ return r;
+}
+
+/**
+ * amdgpu_bo_sync_wait - Wrapper for amdgpu_bo_sync_wait_resv
+ * @bo: buffer object to wait for
+ * @owner: fence owner
+ * @intr: Whether the wait is interruptible
+ *
+ * Wrapper to wait for fences in a BO.
+ * Returns:
+ * 0 on success, errno otherwise.
+ */
+int amdgpu_bo_sync_wait(struct amdgpu_bo *bo, void *owner, bool intr)
+{
+ struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
+
+ return amdgpu_bo_sync_wait_resv(adev, bo->tbo.base.resv,
+ AMDGPU_SYNC_NE_OWNER, owner, intr);
+}
+
+/**
+ * amdgpu_bo_gpu_offset - return GPU offset of bo
+ * @bo: amdgpu object for which we query the offset
+ *
+ * Note: object should either be pinned or reserved when calling this
+ * function, it might be useful to add check for this for debugging.
+ *
+ * Returns:
+ * current GPU offset of the object.
+ */
+u64 amdgpu_bo_gpu_offset(struct amdgpu_bo *bo)
+{
+ WARN_ON_ONCE(bo->tbo.mem.mem_type == TTM_PL_SYSTEM);
+ WARN_ON_ONCE(!dma_resv_is_locked(bo->tbo.base.resv) &&
+ !bo->pin_count && bo->tbo.type != ttm_bo_type_kernel);
+ WARN_ON_ONCE(bo->tbo.mem.start == AMDGPU_BO_INVALID_OFFSET);
+ WARN_ON_ONCE(bo->tbo.mem.mem_type == TTM_PL_VRAM &&
+ !(bo->flags & AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS));
+
+ return amdgpu_bo_gpu_offset_no_check(bo);
+}
+
+/**
+ * amdgpu_bo_gpu_offset_no_check - return GPU offset of bo
+ * @bo: amdgpu object for which we query the offset
+ *
+ * Returns:
+ * current GPU offset of the object without raising warnings.
+ */
+u64 amdgpu_bo_gpu_offset_no_check(struct amdgpu_bo *bo)
+{
+ struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
+ uint64_t offset;
+
+ offset = (bo->tbo.mem.start << PAGE_SHIFT) +
+ amdgpu_ttm_domain_start(adev, bo->tbo.mem.mem_type);
+
+ return amdgpu_gmc_sign_extend(offset);
+}
+
+/**
+ * amdgpu_bo_get_preferred_pin_domain - get preferred domain for scanout
+ * @adev: amdgpu device object
+ * @domain: allowed :ref:`memory domains <amdgpu_memory_domains>`
+ *
+ * Returns:
+ * Which of the allowed domains is preferred for pinning the BO for scanout.
+ */
+uint32_t amdgpu_bo_get_preferred_pin_domain(struct amdgpu_device *adev,
+ uint32_t domain)
+{
+ if (domain == (AMDGPU_GEM_DOMAIN_VRAM | AMDGPU_GEM_DOMAIN_GTT)) {
+ domain = AMDGPU_GEM_DOMAIN_VRAM;
+ if (adev->gmc.real_vram_size <= AMDGPU_SG_THRESHOLD)
+ domain = AMDGPU_GEM_DOMAIN_GTT;
+ }
+ return domain;
+}