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OpenCloudOS-Kernel/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c

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/*
* 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"
static u64 amdgpu_get_vis_part_size(struct amdgpu_device *adev,
struct ttm_mem_reg *mem)
{
if (mem->start << PAGE_SHIFT >= adev->mc.visible_vram_size)
return 0;
return ((mem->start << PAGE_SHIFT) + mem->size) >
adev->mc.visible_vram_size ?
adev->mc.visible_vram_size - (mem->start << PAGE_SHIFT) :
mem->size;
}
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_device *adev = amdgpu_ttm_adev(tbo->bdev);
struct amdgpu_bo *bo;
bo = container_of(tbo, struct amdgpu_bo, tbo);
amdgpu_update_memory_usage(adev, &bo->tbo.mem, NULL);
drm_gem_object_release(&bo->gem_base);
amdgpu_bo_unref(&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);
}
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 *places,
u32 domain, u64 flags)
{
u32 c = 0;
if (domain & AMDGPU_GEM_DOMAIN_VRAM) {
unsigned visible_pfn = adev->mc.visible_vram_size >> PAGE_SHIFT;
unsigned lpfn = 0;
/* This forces a reallocation if the flag wasn't set before */
if (flags & AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS)
lpfn = adev->mc.real_vram_size >> PAGE_SHIFT;
places[c].fpfn = 0;
places[c].lpfn = lpfn;
places[c].flags = TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED |
TTM_PL_FLAG_VRAM;
if (flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED)
places[c].lpfn = visible_pfn;
else
places[c].flags |= TTM_PL_FLAG_TOPDOWN;
c++;
}
if (domain & AMDGPU_GEM_DOMAIN_GTT) {
places[c].fpfn = 0;
places[c].lpfn = 0;
places[c].flags = TTM_PL_FLAG_TT;
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].flags = TTM_PL_FLAG_SYSTEM;
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].flags = TTM_PL_FLAG_UNCACHED | AMDGPU_PL_FLAG_GDS;
c++;
}
if (domain & AMDGPU_GEM_DOMAIN_GWS) {
places[c].fpfn = 0;
places[c].lpfn = 0;
places[c].flags = TTM_PL_FLAG_UNCACHED | AMDGPU_PL_FLAG_GWS;
c++;
}
if (domain & AMDGPU_GEM_DOMAIN_OA) {
places[c].fpfn = 0;
places[c].lpfn = 0;
places[c].flags = TTM_PL_FLAG_UNCACHED | AMDGPU_PL_FLAG_OA;
c++;
}
if (!c) {
places[c].fpfn = 0;
places[c].lpfn = 0;
places[c].flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
c++;
}
placement->num_placement = c;
placement->placement = places;
placement->num_busy_placement = c;
placement->busy_placement = places;
}
void amdgpu_ttm_placement_from_domain(struct amdgpu_bo *abo, u32 domain)
{
struct amdgpu_device *adev = amdgpu_ttm_adev(abo->tbo.bdev);
amdgpu_ttm_placement_init(adev, &abo->placement, abo->placements,
domain, abo->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;
}
/**
* 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: resulting BO
* @gpu_addr: GPU addr of the pinned BO
* @cpu_addr: optional CPU address mapping
*
* Allocates and pins a BO for kernel internal use.
*
* 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(adev, size, align, true, domain,
AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED |
AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS,
NULL, NULL, bo_ptr);
if (r) {
dev_err(adev->dev, "(%d) failed to allocate kernel bo\n", r);
return r;
}
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, gpu_addr);
if (r) {
dev_err(adev->dev, "(%d) kernel bo pin failed\n", r);
goto error_unreserve;
}
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_unreserve;
}
}
amdgpu_bo_unreserve(*bo_ptr);
return 0;
error_unreserve:
amdgpu_bo_unreserve(*bo_ptr);
error_free:
amdgpu_bo_unref(bo_ptr);
return r;
}
/**
* amdgpu_bo_free_kernel - free BO for kernel use
*
* @bo: amdgpu BO to free
*
* 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, false) == 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;
}
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;
}
INIT_LIST_HEAD(&bo->shadow_list);
INIT_LIST_HEAD(&bo->va);
bo->prefered_domains = 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->allowed_domains = bo->prefered_domains;
if (!kernel && bo->allowed_domains == AMDGPU_GEM_DOMAIN_VRAM)
bo->allowed_domains |= AMDGPU_GEM_DOMAIN_GTT;
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 */
if (!resv) {
bool locked;
reservation_object_init(&bo->tbo.ttm_resv);
locked = ww_mutex_trylock(&bo->tbo.ttm_resv.lock);
WARN_ON(!locked);
}
r = ttm_bo_init(&adev->mman.bdev, &bo->tbo, size, type,
&bo->placement, page_align, !kernel, NULL,
acc_size, sg, resv ? resv : &bo->tbo.ttm_resv,
&amdgpu_ttm_bo_destroy);
if (unlikely(r != 0))
return r;
if (flags & AMDGPU_GEM_CREATE_VRAM_CLEARED &&
bo->tbo.mem.placement & TTM_PL_FLAG_VRAM) {
struct dma_fence *fence;
r = amdgpu_fill_buffer(bo, 0, bo->tbo.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 (!resv)
ww_mutex_unlock(&bo->tbo.resv->lock);
*bo_ptr = bo;
trace_amdgpu_bo_create(bo);
return 0;
fail_unreserve:
ww_mutex_unlock(&bo->tbo.resv->lock);
amdgpu_bo_unref(&bo);
return r;
}
static int amdgpu_bo_create_shadow(struct amdgpu_device *adev,
unsigned long size, int byte_align,
struct amdgpu_bo *bo)
{
struct ttm_placement placement = {0};
struct ttm_place placements[AMDGPU_GEM_DOMAIN_MAX + 1];
int r;
if (bo->shadow)
return 0;
bo->flags |= AMDGPU_GEM_CREATE_SHADOW;
memset(&placements, 0,
(AMDGPU_GEM_DOMAIN_MAX + 1) * sizeof(struct ttm_place));
amdgpu_ttm_placement_init(adev, &placement,
placements, AMDGPU_GEM_DOMAIN_GTT,
AMDGPU_GEM_CREATE_CPU_GTT_USWC);
r = amdgpu_bo_create_restricted(adev, size, byte_align, true,
AMDGPU_GEM_DOMAIN_GTT,
AMDGPU_GEM_CREATE_CPU_GTT_USWC,
NULL, &placement,
bo->tbo.resv,
&bo->shadow);
if (!r) {
bo->shadow->parent = amdgpu_bo_ref(bo);
mutex_lock(&adev->shadow_list_lock);
list_add_tail(&bo->shadow_list, &adev->shadow_list);
mutex_unlock(&adev->shadow_list_lock);
}
return r;
}
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];
int r;
memset(&placements, 0,
(AMDGPU_GEM_DOMAIN_MAX + 1) * sizeof(struct ttm_place));
amdgpu_ttm_placement_init(adev, &placement,
placements, domain, flags);
r = amdgpu_bo_create_restricted(adev, size, byte_align, kernel,
domain, flags, sg, &placement,
resv, bo_ptr);
if (r)
return r;
if (amdgpu_need_backup(adev) && (flags & AMDGPU_GEM_CREATE_SHADOW)) {
r = amdgpu_bo_create_shadow(adev, size, byte_align, (*bo_ptr));
if (r)
amdgpu_bo_unref(bo_ptr);
}
return r;
}
int amdgpu_bo_backup_to_shadow(struct amdgpu_device *adev,
struct amdgpu_ring *ring,
struct amdgpu_bo *bo,
struct reservation_object *resv,
struct dma_fence **fence,
bool direct)
{
struct amdgpu_bo *shadow = bo->shadow;
uint64_t bo_addr, shadow_addr;
int r;
if (!shadow)
return -EINVAL;
bo_addr = amdgpu_bo_gpu_offset(bo);
shadow_addr = amdgpu_bo_gpu_offset(bo->shadow);
r = reservation_object_reserve_shared(bo->tbo.resv);
if (r)
goto err;
r = amdgpu_copy_buffer(ring, bo_addr, shadow_addr,
amdgpu_bo_size(bo), resv, fence,
direct);
if (!r)
amdgpu_bo_fence(bo, *fence, true);
err:
return r;
}
int amdgpu_bo_restore_from_shadow(struct amdgpu_device *adev,
struct amdgpu_ring *ring,
struct amdgpu_bo *bo,
struct reservation_object *resv,
struct dma_fence **fence,
bool direct)
{
struct amdgpu_bo *shadow = bo->shadow;
uint64_t bo_addr, shadow_addr;
int r;
if (!shadow)
return -EINVAL;
bo_addr = amdgpu_bo_gpu_offset(bo);
shadow_addr = amdgpu_bo_gpu_offset(bo->shadow);
r = reservation_object_reserve_shared(bo->tbo.resv);
if (r)
goto err;
r = amdgpu_copy_buffer(ring, shadow_addr, bo_addr,
amdgpu_bo_size(bo), resv, fence,
direct);
if (!r)
amdgpu_bo_fence(bo, *fence, true);
err:
return r;
}
int amdgpu_bo_kmap(struct amdgpu_bo *bo, void **ptr)
{
bool is_iomem;
long r;
if (bo->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)
return -EPERM;
if (bo->kptr) {
if (ptr) {
*ptr = bo->kptr;
}
return 0;
}
r = reservation_object_wait_timeout_rcu(bo->tbo.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;
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)
{
struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
int r, i;
unsigned fpfn, lpfn;
if (amdgpu_ttm_tt_get_usermm(bo->tbo.ttm))
return -EPERM;
if (WARN_ON_ONCE(min_offset > max_offset))
return -EINVAL;
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 (gpu_addr)
*gpu_addr = amdgpu_bo_gpu_offset(bo);
if (max_offset != 0) {
u64 domain_start = bo->tbo.bdev->man[mem_type].gpu_offset;
WARN_ON_ONCE(max_offset <
(amdgpu_bo_gpu_offset(bo) - domain_start));
}
return 0;
}
bo->flags |= AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS;
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 >
adev->mc.visible_vram_size)) {
if (WARN_ON_ONCE(min_offset >
adev->mc.visible_vram_size))
return -EINVAL;
fpfn = min_offset >> PAGE_SHIFT;
lpfn = 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 (unlikely(r)) {
dev_err(adev->dev, "%p pin failed\n", bo);
goto error;
}
r = amdgpu_ttm_bind(&bo->tbo, &bo->tbo.mem);
if (unlikely(r)) {
dev_err(adev->dev, "%p bind failed\n", bo);
goto error;
}
bo->pin_count = 1;
if (gpu_addr != NULL)
*gpu_addr = amdgpu_bo_gpu_offset(bo);
if (domain == AMDGPU_GEM_DOMAIN_VRAM) {
adev->vram_pin_size += amdgpu_bo_size(bo);
if (bo->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)
adev->invisible_pin_size += amdgpu_bo_size(bo);
} else if (domain == AMDGPU_GEM_DOMAIN_GTT) {
adev->gart_pin_size += amdgpu_bo_size(bo);
}
error:
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)
{
struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
int r, i;
if (!bo->pin_count) {
dev_warn(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 (unlikely(r)) {
dev_err(adev->dev, "%p validate failed for unpin\n", bo);
goto error;
}
if (bo->tbo.mem.mem_type == TTM_PL_VRAM) {
adev->vram_pin_size -= amdgpu_bo_size(bo);
if (bo->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS)
adev->invisible_pin_size -= amdgpu_bo_size(bo);
} else if (bo->tbo.mem.mem_type == TTM_PL_TT) {
adev->gart_pin_size -= amdgpu_bo_size(bo);
}
error:
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);
}
static const char *amdgpu_vram_names[] = {
"UNKNOWN",
"GDDR1",
"DDR2",
"GDDR3",
"GDDR4",
"GDDR5",
"HBM",
"DDR3"
};
int amdgpu_bo_init(struct amdgpu_device *adev)
{
/* reserve PAT memory space to WC for VRAM */
arch_io_reserve_memtype_wc(adev->mc.aper_base,
adev->mc.aper_size);
/* 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 %s\n",
adev->mc.vram_width, amdgpu_vram_names[adev->mc.vram_type]);
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);
arch_io_free_memtype_wc(adev->mc.aper_base, adev->mc.aper_size);
}
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 = 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;
}
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_device *adev = amdgpu_ttm_adev(bo->bdev);
struct amdgpu_bo *abo;
struct ttm_mem_reg *old_mem = &bo->mem;
if (!amdgpu_ttm_bo_is_amdgpu_bo(bo))
return;
abo = container_of(bo, struct amdgpu_bo, tbo);
amdgpu_vm_bo_invalidate(adev, abo);
/* update statistics */
if (!new_mem)
return;
/* move_notify is called before move happens */
amdgpu_update_memory_usage(adev, &bo->mem, new_mem);
trace_amdgpu_ttm_bo_move(abo, new_mem->mem_type, old_mem->mem_type);
}
int amdgpu_bo_fault_reserve_notify(struct ttm_buffer_object *bo)
{
struct amdgpu_device *adev = amdgpu_ttm_adev(bo->bdev);
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);
if (bo->mem.mem_type != TTM_PL_VRAM)
return 0;
size = bo->mem.num_pages << PAGE_SHIFT;
offset = bo->mem.start << PAGE_SHIFT;
/* TODO: figure out how to map scattered VRAM to the CPU */
if ((offset + size) <= adev->mc.visible_vram_size &&
(abo->flags & AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS))
return 0;
/* Can't move a pinned BO to visible VRAM */
if (abo->pin_count > 0)
return -EINVAL;
/* hurrah the memory is not visible ! */
abo->flags |= AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS;
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 dma_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);
}
/**
* amdgpu_bo_gpu_offset - return GPU offset of bo
* @bo: amdgpu object for which we query the offset
*
* Returns current GPU offset of the object.
*
* Note: object should either be pinned or reserved when calling this
* function, it might be useful to add check for this for debugging.
*/
u64 amdgpu_bo_gpu_offset(struct amdgpu_bo *bo)
{
WARN_ON_ONCE(bo->tbo.mem.mem_type == TTM_PL_SYSTEM);
WARN_ON_ONCE(bo->tbo.mem.mem_type == TTM_PL_TT &&
!amdgpu_ttm_is_bound(bo->tbo.ttm));
WARN_ON_ONCE(!ww_mutex_is_locked(&bo->tbo.resv->lock) &&
!bo->pin_count);
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 bo->tbo.offset;
}
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