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cos / third_party / kernel / 2f69b8ac4bd9d2b40371198e91d477f8b64dcf9f / . / drivers / gpu / drm / amd / amdgpu / amdgpu_object.c
blob: 0ee7c935fba1fa6d4accf4aa78ab741bb0500915 [file] [log] [blame]
/*
* 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/drm_drv.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.
*
*/
static void amdgpu_bo_destroy(struct ttm_buffer_object *tbo)
{
struct amdgpu_bo *bo = ttm_to_amdgpu_bo(tbo);
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);
amdgpu_bo_unref(&bo->parent);
kvfree(bo);
}
static void amdgpu_bo_user_destroy(struct ttm_buffer_object *tbo)
{
struct amdgpu_bo *bo = ttm_to_amdgpu_bo(tbo);
struct amdgpu_bo_user *ubo;
ubo = to_amdgpu_bo_user(bo);
kfree(ubo->metadata);
amdgpu_bo_destroy(tbo);
}
static void amdgpu_bo_vm_destroy(struct ttm_buffer_object *tbo)
{
struct amdgpu_device *adev = amdgpu_ttm_adev(tbo->bdev);
struct amdgpu_bo *shadow_bo = ttm_to_amdgpu_bo(tbo), *bo;
struct amdgpu_bo_vm *vmbo;
bo = shadow_bo->parent;
vmbo = to_amdgpu_bo_vm(bo);
/* in case amdgpu_device_recover_vram got NULL of bo->parent */
if (!list_empty(&vmbo->shadow_list)) {
mutex_lock(&adev->shadow_list_lock);
list_del_init(&vmbo->shadow_list);
mutex_unlock(&adev->shadow_list_lock);
}
amdgpu_bo_destroy(tbo);
}
/**
* 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 ||
bo->destroy == &amdgpu_bo_user_destroy ||
bo->destroy == &amdgpu_bo_vm_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 = 0;
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 =
abo->flags & AMDGPU_GEM_CREATE_PREEMPTIBLE ?
AMDGPU_PL_PREEMPT : TTM_PL_TT;
places[c].flags = 0;
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;
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 = 0;
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 = 0;
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 = 0;
c++;
}
if (!c) {
places[c].fpfn = 0;
places[c].lpfn = 0;
places[c].mem_type = TTM_PL_SYSTEM;
places[c].flags = 0;
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;
bp.bo_ptr_size = sizeof(struct amdgpu_bo);
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
* @bo_ptr: used to initialize BOs in structures
* @cpu_addr: optional CPU address mapping
*
* Creates a kernel BO at a specific offset in VRAM.
*
* Returns:
* 0 on success, negative error code otherwise.
*/
int amdgpu_bo_create_kernel_at(struct amdgpu_device *adev,
uint64_t offset, uint64_t size,
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,
AMDGPU_GEM_DOMAIN_VRAM, 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.resource);
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.resource, &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 (man && size < man->size)
return true;
else if (!man)
WARN_ON_ONCE("GTT domain requested but GTT mem manager uninitialized");
goto fail;
} else if (domain & AMDGPU_GEM_DOMAIN_VRAM) {
man = ttm_manager_type(&adev->mman.bdev, TTM_PL_VRAM);
if (man && size < man->size)
return true;
goto fail;
}
/* TODO add more domains checks, such as AMDGPU_GEM_DOMAIN_CPU */
return true;
fail:
if (man)
DRM_DEBUG("BO size %lu > total memory in domain: %llu\n", size,
man->size);
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
}
/**
* 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.
*
* 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)
{
struct ttm_operation_ctx ctx = {
.interruptible = (bp->type != ttm_bo_type_kernel),
.no_wait_gpu = bp->no_wait_gpu,
/* We opt to avoid OOM on system pages allocations */
.gfp_retry_mayfail = true,
.allow_res_evict = bp->type != ttm_bo_type_kernel,
.resv = bp->resv
};
struct amdgpu_bo *bo;
unsigned long page_align, size = bp->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;
BUG_ON(bp->bo_ptr_size < sizeof(struct amdgpu_bo));
*bo_ptr = NULL;
bo = kvzalloc(bp->bo_ptr_size, GFP_KERNEL);
if (bo == NULL)
return -ENOMEM;
drm_gem_private_object_init(adev_to_drm(adev), &bo->tbo.base, size);
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 &&
!(bp->flags & AMDGPU_GEM_CREATE_DISCARDABLE) &&
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;
if (adev->ras_enabled)
bo->flags |= AMDGPU_GEM_CREATE_VRAM_WIPE_ON_RELEASE;
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;
if (!bp->destroy)
bp->destroy = &amdgpu_bo_destroy;
r = ttm_bo_init_reserved(&adev->mman.bdev, &bo->tbo, bp->type,
&bo->placement, page_align, &ctx, NULL,
bp->resv, bp->destroy);
if (unlikely(r != 0))
return r;
if (!amdgpu_gmc_vram_full_visible(&adev->gmc) &&
bo->tbo.resource->mem_type == TTM_PL_VRAM &&
bo->tbo.resource->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.resource->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;
dma_resv_add_fence(bo->tbo.base.resv, fence,
DMA_RESV_USAGE_KERNEL);
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;
}
/**
* amdgpu_bo_create_user - create an &amdgpu_bo_user buffer object
* @adev: amdgpu device object
* @bp: parameters to be used for the buffer object
* @ubo_ptr: pointer to the buffer object pointer
*
* Create a BO to be used by user application;
*
* Returns:
* 0 for success or a negative error code on failure.
*/
int amdgpu_bo_create_user(struct amdgpu_device *adev,
struct amdgpu_bo_param *bp,
struct amdgpu_bo_user **ubo_ptr)
{
struct amdgpu_bo *bo_ptr;
int r;
bp->bo_ptr_size = sizeof(struct amdgpu_bo_user);
bp->destroy = &amdgpu_bo_user_destroy;
r = amdgpu_bo_create(adev, bp, &bo_ptr);
if (r)
return r;
*ubo_ptr = to_amdgpu_bo_user(bo_ptr);
return r;
}
/**
* amdgpu_bo_create_vm - create an &amdgpu_bo_vm buffer object
* @adev: amdgpu device object
* @bp: parameters to be used for the buffer object
* @vmbo_ptr: pointer to the buffer object pointer
*
* Create a BO to be for GPUVM.
*
* Returns:
* 0 for success or a negative error code on failure.
*/
int amdgpu_bo_create_vm(struct amdgpu_device *adev,
struct amdgpu_bo_param *bp,
struct amdgpu_bo_vm **vmbo_ptr)
{
struct amdgpu_bo *bo_ptr;
int r;
/* bo_ptr_size will be determined by the caller and it depends on
* num of amdgpu_vm_pt entries.
*/
BUG_ON(bp->bo_ptr_size < sizeof(struct amdgpu_bo_vm));
r = amdgpu_bo_create(adev, bp, &bo_ptr);
if (r)
return r;
*vmbo_ptr = to_amdgpu_bo_vm(bo_ptr);
return r;
}
/**
* amdgpu_bo_add_to_shadow_list - add a BO to the shadow list
*
* @vmbo: BO that will be inserted into the shadow list
*
* Insert a BO to the shadow list.
*/
void amdgpu_bo_add_to_shadow_list(struct amdgpu_bo_vm *vmbo)
{
struct amdgpu_device *adev = amdgpu_ttm_adev(vmbo->bo.tbo.bdev);
mutex_lock(&adev->shadow_list_lock);
list_add_tail(&vmbo->shadow_list, &adev->shadow_list);
vmbo->shadow->parent = amdgpu_bo_ref(&vmbo->bo);
vmbo->shadow->tbo.destroy = &amdgpu_bo_vm_destroy;
mutex_unlock(&adev->shadow_list_lock);
}
/**
* 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;
r = dma_resv_wait_timeout(bo->tbo.base.resv, DMA_RESV_USAGE_KERNEL,
false, MAX_SCHEDULE_TIMEOUT);
if (r < 0)
return r;
kptr = amdgpu_bo_kptr(bo);
if (kptr) {
if (ptr)
*ptr = kptr;
return 0;
}
r = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.resource->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->tbo.base.import_attach) {
if (domain & AMDGPU_GEM_DOMAIN_GTT)
domain = AMDGPU_GEM_DOMAIN_GTT;
else
return -EINVAL;
}
if (bo->tbo.pin_count) {
uint32_t mem_type = bo->tbo.resource->mem_type;
uint32_t mem_flags = bo->tbo.resource->placement;
if (!(domain & amdgpu_mem_type_to_domain(mem_type)))
return -EINVAL;
if ((mem_type == TTM_PL_VRAM) &&
(bo->flags & AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS) &&
!(mem_flags & TTM_PL_FLAG_CONTIGUOUS))
return -EINVAL;
ttm_bo_pin(&bo->tbo);
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;
}
/* This assumes only APU display buffers are pinned with (VRAM|GTT).
* See function amdgpu_display_supported_domains()
*/
domain = amdgpu_bo_get_preferred_domain(adev, domain);
if (bo->tbo.base.import_attach)
dma_buf_pin(bo->tbo.base.import_attach);
/* 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;
}
r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
if (unlikely(r)) {
dev_err(adev->dev, "%p pin failed\n", bo);
goto error;
}
ttm_bo_pin(&bo->tbo);
domain = amdgpu_mem_type_to_domain(bo->tbo.resource->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)
{
bo->flags |= AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS;
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.
*/
void amdgpu_bo_unpin(struct amdgpu_bo *bo)
{
struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
ttm_bo_unpin(&bo->tbo);
if (bo->tbo.pin_count)
return;
if (bo->tbo.base.import_attach)
dma_buf_unpin(bo->tbo.base.import_attach);
if (bo->tbo.resource->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.resource->mem_type == TTM_PL_TT) {
atomic64_sub(amdgpu_bo_size(bo), &adev->gart_pin_size);
}
}
static const char *amdgpu_vram_names[] = {
"UNKNOWN",
"GDDR1",
"DDR2",
"GDDR3",
"GDDR4",
"GDDR5",
"HBM",
"DDR3",
"DDR4",
"GDDR6",
"DDR5",
"LPDDR4",
"LPDDR5"
};
/**
* 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)
{
/* On A+A platform, VRAM can be mapped as WB */
if (!adev->gmc.xgmi.connected_to_cpu) {
/* reserve PAT memory space to WC for VRAM */
int r = arch_io_reserve_memtype_wc(adev->gmc.aper_base,
adev->gmc.aper_size);
if (r) {
DRM_ERROR("Unable to set WC memtype for the aperture base\n");
return r;
}
/* 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_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)
{
int idx;
amdgpu_ttm_fini(adev);
if (drm_dev_enter(adev_to_drm(adev), &idx)) {
if (!adev->gmc.xgmi.connected_to_cpu) {
arch_phys_wc_del(adev->gmc.vram_mtrr);
arch_io_free_memtype_wc(adev->gmc.aper_base, adev->gmc.aper_size);
}
drm_dev_exit(idx);
}
}
/**
* 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);
struct amdgpu_bo_user *ubo;
BUG_ON(bo->tbo.type == ttm_bo_type_kernel);
if (adev->family <= AMDGPU_FAMILY_CZ &&
AMDGPU_TILING_GET(tiling_flags, TILE_SPLIT) > 6)
return -EINVAL;
ubo = to_amdgpu_bo_user(bo);
ubo->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)
{
struct amdgpu_bo_user *ubo;
BUG_ON(bo->tbo.type == ttm_bo_type_kernel);
dma_resv_assert_held(bo->tbo.base.resv);
ubo = to_amdgpu_bo_user(bo);
if (tiling_flags)
*tiling_flags = ubo->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)
{
struct amdgpu_bo_user *ubo;
void *buffer;
BUG_ON(bo->tbo.type == ttm_bo_type_kernel);
ubo = to_amdgpu_bo_user(bo);
if (!metadata_size) {
if (ubo->metadata_size) {
kfree(ubo->metadata);
ubo->metadata = NULL;
ubo->metadata_size = 0;
}
return 0;
}
if (metadata == NULL)
return -EINVAL;
buffer = kmemdup(metadata, metadata_size, GFP_KERNEL);
if (buffer == NULL)
return -ENOMEM;
kfree(ubo->metadata);
ubo->metadata_flags = flags;
ubo->metadata = buffer;
ubo->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)
{
struct amdgpu_bo_user *ubo;
if (!buffer && !metadata_size)
return -EINVAL;
BUG_ON(bo->tbo.type == ttm_bo_type_kernel);
ubo = to_amdgpu_bo_user(bo);
if (metadata_size)
*metadata_size = ubo->metadata_size;
if (buffer) {
if (buffer_size < ubo->metadata_size)
return -EINVAL;
if (ubo->metadata_size)
memcpy(buffer, ubo->metadata, ubo->metadata_size);
}
if (flags)
*flags = ubo->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->resource;
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->resource->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);
}
void amdgpu_bo_get_memory(struct amdgpu_bo *bo, uint64_t *vram_mem,
uint64_t *gtt_mem, uint64_t *cpu_mem)
{
unsigned int domain;
domain = amdgpu_mem_type_to_domain(bo->tbo.resource->mem_type);
switch (domain) {
case AMDGPU_GEM_DOMAIN_VRAM:
*vram_mem += amdgpu_bo_size(bo);
break;
case AMDGPU_GEM_DOMAIN_GTT:
*gtt_mem += amdgpu_bo_size(bo);
break;
case AMDGPU_GEM_DOMAIN_CPU:
default:
*cpu_mem += amdgpu_bo_size(bo);
break;
}
}
/**
* 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 amdgpu_device *adev = amdgpu_ttm_adev(bo->bdev);
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_release_notify(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->resource || bo->resource->mem_type != TTM_PL_VRAM ||
!(abo->flags & AMDGPU_GEM_CREATE_VRAM_WIPE_ON_RELEASE) ||
adev->in_suspend || drm_dev_is_unplugged(adev_to_drm(adev)))
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.
*/
vm_fault_t 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 = ttm_to_amdgpu_bo(bo);
unsigned long offset;
int r;
/* Remember that this BO was accessed by the CPU */
abo->flags |= AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
if (bo->resource->mem_type != TTM_PL_VRAM)
return 0;
offset = bo->resource->start << PAGE_SHIFT;
if ((offset + bo->base.size) <= adev->gmc.visible_vram_size)
return 0;
/* Can't move a pinned BO to visible VRAM */
if (abo->tbo.pin_count > 0)
return VM_FAULT_SIGBUS;
/* 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 == -EBUSY || r == -ERESTARTSYS))
return VM_FAULT_NOPAGE;
else if (unlikely(r))
return VM_FAULT_SIGBUS;
offset = bo->resource->start << PAGE_SHIFT;
/* this should never happen */
if (bo->resource->mem_type == TTM_PL_VRAM &&
(offset + bo->base.size) > adev->gmc.visible_vram_size)
return VM_FAULT_SIGBUS;
ttm_bo_move_to_lru_tail_unlocked(bo);
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;
int r;
r = dma_resv_reserve_fences(resv, 1);
if (r) {
/* As last resort on OOM we block for the fence */
dma_fence_wait(fence, false);
return;
}
dma_resv_add_fence(resv, fence, shared ? DMA_RESV_USAGE_READ :
DMA_RESV_USAGE_WRITE);
}
/**
* 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.resource->mem_type == TTM_PL_SYSTEM);
WARN_ON_ONCE(!dma_resv_is_locked(bo->tbo.base.resv) &&
!bo->tbo.pin_count && bo->tbo.type != ttm_bo_type_kernel);
WARN_ON_ONCE(bo->tbo.resource->start == AMDGPU_BO_INVALID_OFFSET);
WARN_ON_ONCE(bo->tbo.resource->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.resource->start << PAGE_SHIFT) +
amdgpu_ttm_domain_start(adev, bo->tbo.resource->mem_type);
return amdgpu_gmc_sign_extend(offset);
}
/**
* amdgpu_bo_get_preferred_domain - get preferred domain
* @adev: amdgpu device object
* @domain: allowed :ref:`memory domains <amdgpu_memory_domains>`
*
* Returns:
* Which of the allowed domains is preferred for allocating the BO.
*/
uint32_t amdgpu_bo_get_preferred_domain(struct amdgpu_device *adev,
uint32_t domain)
{
if ((domain == (AMDGPU_GEM_DOMAIN_VRAM | AMDGPU_GEM_DOMAIN_GTT)) &&
((adev->asic_type == CHIP_CARRIZO) || (adev->asic_type == CHIP_STONEY))) {
domain = AMDGPU_GEM_DOMAIN_VRAM;
if (adev->gmc.real_vram_size <= AMDGPU_SG_THRESHOLD)
domain = AMDGPU_GEM_DOMAIN_GTT;
}
return domain;
}
#if defined(CONFIG_DEBUG_FS)
#define amdgpu_bo_print_flag(m, bo, flag) \
do { \
if (bo->flags & (AMDGPU_GEM_CREATE_ ## flag)) { \
seq_printf((m), " " #flag); \
} \
} while (0)
/**
* amdgpu_bo_print_info - print BO info in debugfs file
*
* @id: Index or Id of the BO
* @bo: Requested BO for printing info
* @m: debugfs file
*
* Print BO information in debugfs file
*
* Returns:
* Size of the BO in bytes.
*/
u64 amdgpu_bo_print_info(int id, struct amdgpu_bo *bo, struct seq_file *m)
{
struct dma_buf_attachment *attachment;
struct dma_buf *dma_buf;
unsigned int domain;
const char *placement;
unsigned int pin_count;
u64 size;
domain = amdgpu_mem_type_to_domain(bo->tbo.resource->mem_type);
switch (domain) {
case AMDGPU_GEM_DOMAIN_VRAM:
placement = "VRAM";
break;
case AMDGPU_GEM_DOMAIN_GTT:
placement = " GTT";
break;
case AMDGPU_GEM_DOMAIN_CPU:
default:
placement = " CPU";
break;
}
size = amdgpu_bo_size(bo);
seq_printf(m, "\t\t0x%08x: %12lld byte %s",
id, size, placement);
pin_count = READ_ONCE(bo->tbo.pin_count);
if (pin_count)
seq_printf(m, " pin count %d", pin_count);
dma_buf = READ_ONCE(bo->tbo.base.dma_buf);
attachment = READ_ONCE(bo->tbo.base.import_attach);
if (attachment)
seq_printf(m, " imported from %p", dma_buf);
else if (dma_buf)
seq_printf(m, " exported as %p", dma_buf);
amdgpu_bo_print_flag(m, bo, CPU_ACCESS_REQUIRED);
amdgpu_bo_print_flag(m, bo, NO_CPU_ACCESS);
amdgpu_bo_print_flag(m, bo, CPU_GTT_USWC);
amdgpu_bo_print_flag(m, bo, VRAM_CLEARED);
amdgpu_bo_print_flag(m, bo, VRAM_CONTIGUOUS);
amdgpu_bo_print_flag(m, bo, VM_ALWAYS_VALID);
amdgpu_bo_print_flag(m, bo, EXPLICIT_SYNC);
seq_puts(m, "\n");
return size;
}
#endif