linux/drivers/gpu/drm/nouveau/nouveau_bo.c
Maarten Maathuis eb1dba0eba drm/nv50: align size of buffer object to the right boundaries.
- In the current situation the padding that is added is dangerous to write
  to, userspace could potentially overwrite parts of another bo.
- Depth and stencil buffers are supposed to be large enough in general so
  the waste of memory should be acceptable.
- Alternatives are hiding the padding from users or splitting vram into 2
  zones.

Signed-off-by: Maarten Maathuis <madman2003@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-02-10 08:19:34 +10:00

774 lines
20 KiB
C

/*
* Copyright 2007 Dave Airlied
* 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, sublicense,
* 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 above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* 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 NONINFRINGEMENT. IN NO EVENT SHALL
* VA LINUX SYSTEMS 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.
*/
/*
* Authors: Dave Airlied <airlied@linux.ie>
* Ben Skeggs <darktama@iinet.net.au>
* Jeremy Kolb <jkolb@brandeis.edu>
*/
#include "drmP.h"
#include "nouveau_drm.h"
#include "nouveau_drv.h"
#include "nouveau_dma.h"
#include <linux/log2.h>
static void
nouveau_bo_del_ttm(struct ttm_buffer_object *bo)
{
struct drm_nouveau_private *dev_priv = nouveau_bdev(bo->bdev);
struct drm_device *dev = dev_priv->dev;
struct nouveau_bo *nvbo = nouveau_bo(bo);
ttm_bo_kunmap(&nvbo->kmap);
if (unlikely(nvbo->gem))
DRM_ERROR("bo %p still attached to GEM object\n", bo);
if (nvbo->tile)
nv10_mem_expire_tiling(dev, nvbo->tile, NULL);
spin_lock(&dev_priv->ttm.bo_list_lock);
list_del(&nvbo->head);
spin_unlock(&dev_priv->ttm.bo_list_lock);
kfree(nvbo);
}
static void
nouveau_bo_fixup_align(struct drm_device *dev,
uint32_t tile_mode, uint32_t tile_flags,
int *align, int *size)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
/*
* Some of the tile_flags have a periodic structure of N*4096 bytes,
* align to to that as well as the page size. Align the size to the
* appropriate boundaries. This does imply that sizes are rounded up
* 3-7 pages, so be aware of this and do not waste memory by allocating
* many small buffers.
*/
if (dev_priv->card_type == NV_50) {
uint32_t block_size = nouveau_mem_fb_amount(dev) >> 15;
int i;
switch (tile_flags) {
case 0x1800:
case 0x2800:
case 0x4800:
case 0x7a00:
if (is_power_of_2(block_size)) {
for (i = 1; i < 10; i++) {
*align = 12 * i * block_size;
if (!(*align % 65536))
break;
}
} else {
for (i = 1; i < 10; i++) {
*align = 8 * i * block_size;
if (!(*align % 65536))
break;
}
}
*size = roundup(*size, *align);
break;
default:
break;
}
} else {
if (tile_mode) {
if (dev_priv->chipset >= 0x40) {
*align = 65536;
*size = roundup(*size, 64 * tile_mode);
} else if (dev_priv->chipset >= 0x30) {
*align = 32768;
*size = roundup(*size, 64 * tile_mode);
} else if (dev_priv->chipset >= 0x20) {
*align = 16384;
*size = roundup(*size, 64 * tile_mode);
} else if (dev_priv->chipset >= 0x10) {
*align = 16384;
*size = roundup(*size, 32 * tile_mode);
}
}
}
/* ALIGN works only on powers of two. */
*size = roundup(*size, PAGE_SIZE);
if (dev_priv->card_type == NV_50) {
*size = roundup(*size, 65536);
*align = max(65536, *align);
}
}
int
nouveau_bo_new(struct drm_device *dev, struct nouveau_channel *chan,
int size, int align, uint32_t flags, uint32_t tile_mode,
uint32_t tile_flags, bool no_vm, bool mappable,
struct nouveau_bo **pnvbo)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_bo *nvbo;
int ret = 0;
nvbo = kzalloc(sizeof(struct nouveau_bo), GFP_KERNEL);
if (!nvbo)
return -ENOMEM;
INIT_LIST_HEAD(&nvbo->head);
INIT_LIST_HEAD(&nvbo->entry);
nvbo->mappable = mappable;
nvbo->no_vm = no_vm;
nvbo->tile_mode = tile_mode;
nvbo->tile_flags = tile_flags;
nouveau_bo_fixup_align(dev, tile_mode, tile_flags, &align, &size);
align >>= PAGE_SHIFT;
nvbo->placement.fpfn = 0;
nvbo->placement.lpfn = mappable ? dev_priv->fb_mappable_pages : 0;
nouveau_bo_placement_set(nvbo, flags);
nvbo->channel = chan;
ret = ttm_bo_init(&dev_priv->ttm.bdev, &nvbo->bo, size,
ttm_bo_type_device, &nvbo->placement, align, 0,
false, NULL, size, nouveau_bo_del_ttm);
nvbo->channel = NULL;
if (ret) {
/* ttm will call nouveau_bo_del_ttm if it fails.. */
return ret;
}
spin_lock(&dev_priv->ttm.bo_list_lock);
list_add_tail(&nvbo->head, &dev_priv->ttm.bo_list);
spin_unlock(&dev_priv->ttm.bo_list_lock);
*pnvbo = nvbo;
return 0;
}
void
nouveau_bo_placement_set(struct nouveau_bo *nvbo, uint32_t memtype)
{
int n = 0;
if (memtype & TTM_PL_FLAG_VRAM)
nvbo->placements[n++] = TTM_PL_FLAG_VRAM | TTM_PL_MASK_CACHING;
if (memtype & TTM_PL_FLAG_TT)
nvbo->placements[n++] = TTM_PL_FLAG_TT | TTM_PL_MASK_CACHING;
if (memtype & TTM_PL_FLAG_SYSTEM)
nvbo->placements[n++] = TTM_PL_FLAG_SYSTEM | TTM_PL_MASK_CACHING;
nvbo->placement.placement = nvbo->placements;
nvbo->placement.busy_placement = nvbo->placements;
nvbo->placement.num_placement = n;
nvbo->placement.num_busy_placement = n;
if (nvbo->pin_refcnt) {
while (n--)
nvbo->placements[n] |= TTM_PL_FLAG_NO_EVICT;
}
}
int
nouveau_bo_pin(struct nouveau_bo *nvbo, uint32_t memtype)
{
struct drm_nouveau_private *dev_priv = nouveau_bdev(nvbo->bo.bdev);
struct ttm_buffer_object *bo = &nvbo->bo;
int ret, i;
if (nvbo->pin_refcnt && !(memtype & (1 << bo->mem.mem_type))) {
NV_ERROR(nouveau_bdev(bo->bdev)->dev,
"bo %p pinned elsewhere: 0x%08x vs 0x%08x\n", bo,
1 << bo->mem.mem_type, memtype);
return -EINVAL;
}
if (nvbo->pin_refcnt++)
return 0;
ret = ttm_bo_reserve(bo, false, false, false, 0);
if (ret)
goto out;
nouveau_bo_placement_set(nvbo, memtype);
for (i = 0; i < nvbo->placement.num_placement; i++)
nvbo->placements[i] |= TTM_PL_FLAG_NO_EVICT;
ret = ttm_bo_validate(bo, &nvbo->placement, false, false);
if (ret == 0) {
switch (bo->mem.mem_type) {
case TTM_PL_VRAM:
dev_priv->fb_aper_free -= bo->mem.size;
break;
case TTM_PL_TT:
dev_priv->gart_info.aper_free -= bo->mem.size;
break;
default:
break;
}
}
ttm_bo_unreserve(bo);
out:
if (unlikely(ret))
nvbo->pin_refcnt--;
return ret;
}
int
nouveau_bo_unpin(struct nouveau_bo *nvbo)
{
struct drm_nouveau_private *dev_priv = nouveau_bdev(nvbo->bo.bdev);
struct ttm_buffer_object *bo = &nvbo->bo;
int ret, i;
if (--nvbo->pin_refcnt)
return 0;
ret = ttm_bo_reserve(bo, false, false, false, 0);
if (ret)
return ret;
for (i = 0; i < nvbo->placement.num_placement; i++)
nvbo->placements[i] &= ~TTM_PL_FLAG_NO_EVICT;
ret = ttm_bo_validate(bo, &nvbo->placement, false, false);
if (ret == 0) {
switch (bo->mem.mem_type) {
case TTM_PL_VRAM:
dev_priv->fb_aper_free += bo->mem.size;
break;
case TTM_PL_TT:
dev_priv->gart_info.aper_free += bo->mem.size;
break;
default:
break;
}
}
ttm_bo_unreserve(bo);
return ret;
}
int
nouveau_bo_map(struct nouveau_bo *nvbo)
{
int ret;
ret = ttm_bo_reserve(&nvbo->bo, false, false, false, 0);
if (ret)
return ret;
ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages, &nvbo->kmap);
ttm_bo_unreserve(&nvbo->bo);
return ret;
}
void
nouveau_bo_unmap(struct nouveau_bo *nvbo)
{
ttm_bo_kunmap(&nvbo->kmap);
}
u16
nouveau_bo_rd16(struct nouveau_bo *nvbo, unsigned index)
{
bool is_iomem;
u16 *mem = ttm_kmap_obj_virtual(&nvbo->kmap, &is_iomem);
mem = &mem[index];
if (is_iomem)
return ioread16_native((void __force __iomem *)mem);
else
return *mem;
}
void
nouveau_bo_wr16(struct nouveau_bo *nvbo, unsigned index, u16 val)
{
bool is_iomem;
u16 *mem = ttm_kmap_obj_virtual(&nvbo->kmap, &is_iomem);
mem = &mem[index];
if (is_iomem)
iowrite16_native(val, (void __force __iomem *)mem);
else
*mem = val;
}
u32
nouveau_bo_rd32(struct nouveau_bo *nvbo, unsigned index)
{
bool is_iomem;
u32 *mem = ttm_kmap_obj_virtual(&nvbo->kmap, &is_iomem);
mem = &mem[index];
if (is_iomem)
return ioread32_native((void __force __iomem *)mem);
else
return *mem;
}
void
nouveau_bo_wr32(struct nouveau_bo *nvbo, unsigned index, u32 val)
{
bool is_iomem;
u32 *mem = ttm_kmap_obj_virtual(&nvbo->kmap, &is_iomem);
mem = &mem[index];
if (is_iomem)
iowrite32_native(val, (void __force __iomem *)mem);
else
*mem = val;
}
static struct ttm_backend *
nouveau_bo_create_ttm_backend_entry(struct ttm_bo_device *bdev)
{
struct drm_nouveau_private *dev_priv = nouveau_bdev(bdev);
struct drm_device *dev = dev_priv->dev;
switch (dev_priv->gart_info.type) {
#if __OS_HAS_AGP
case NOUVEAU_GART_AGP:
return ttm_agp_backend_init(bdev, dev->agp->bridge);
#endif
case NOUVEAU_GART_SGDMA:
return nouveau_sgdma_init_ttm(dev);
default:
NV_ERROR(dev, "Unknown GART type %d\n",
dev_priv->gart_info.type);
break;
}
return NULL;
}
static int
nouveau_bo_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags)
{
/* We'll do this from user space. */
return 0;
}
static int
nouveau_bo_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
struct ttm_mem_type_manager *man)
{
struct drm_nouveau_private *dev_priv = nouveau_bdev(bdev);
struct drm_device *dev = dev_priv->dev;
switch (type) {
case TTM_PL_SYSTEM:
man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
man->available_caching = TTM_PL_MASK_CACHING;
man->default_caching = TTM_PL_FLAG_CACHED;
break;
case TTM_PL_VRAM:
man->flags = TTM_MEMTYPE_FLAG_FIXED |
TTM_MEMTYPE_FLAG_MAPPABLE |
TTM_MEMTYPE_FLAG_NEEDS_IOREMAP;
man->available_caching = TTM_PL_FLAG_UNCACHED |
TTM_PL_FLAG_WC;
man->default_caching = TTM_PL_FLAG_WC;
man->io_addr = NULL;
man->io_offset = drm_get_resource_start(dev, 1);
man->io_size = drm_get_resource_len(dev, 1);
if (man->io_size > nouveau_mem_fb_amount(dev))
man->io_size = nouveau_mem_fb_amount(dev);
man->gpu_offset = dev_priv->vm_vram_base;
break;
case TTM_PL_TT:
switch (dev_priv->gart_info.type) {
case NOUVEAU_GART_AGP:
man->flags = TTM_MEMTYPE_FLAG_MAPPABLE |
TTM_MEMTYPE_FLAG_NEEDS_IOREMAP;
man->available_caching = TTM_PL_FLAG_UNCACHED;
man->default_caching = TTM_PL_FLAG_UNCACHED;
break;
case NOUVEAU_GART_SGDMA:
man->flags = TTM_MEMTYPE_FLAG_MAPPABLE |
TTM_MEMTYPE_FLAG_CMA;
man->available_caching = TTM_PL_MASK_CACHING;
man->default_caching = TTM_PL_FLAG_CACHED;
break;
default:
NV_ERROR(dev, "Unknown GART type: %d\n",
dev_priv->gart_info.type);
return -EINVAL;
}
man->io_offset = dev_priv->gart_info.aper_base;
man->io_size = dev_priv->gart_info.aper_size;
man->io_addr = NULL;
man->gpu_offset = dev_priv->vm_gart_base;
break;
default:
NV_ERROR(dev, "Unsupported memory type %u\n", (unsigned)type);
return -EINVAL;
}
return 0;
}
static void
nouveau_bo_evict_flags(struct ttm_buffer_object *bo, struct ttm_placement *pl)
{
struct nouveau_bo *nvbo = nouveau_bo(bo);
switch (bo->mem.mem_type) {
case TTM_PL_VRAM:
nouveau_bo_placement_set(nvbo, TTM_PL_FLAG_TT |
TTM_PL_FLAG_SYSTEM);
break;
default:
nouveau_bo_placement_set(nvbo, TTM_PL_FLAG_SYSTEM);
break;
}
*pl = nvbo->placement;
}
/* GPU-assisted copy using NV_MEMORY_TO_MEMORY_FORMAT, can access
* TTM_PL_{VRAM,TT} directly.
*/
static int
nouveau_bo_move_accel_cleanup(struct nouveau_channel *chan,
struct nouveau_bo *nvbo, bool evict, bool no_wait,
struct ttm_mem_reg *new_mem)
{
struct nouveau_fence *fence = NULL;
int ret;
ret = nouveau_fence_new(chan, &fence, true);
if (ret)
return ret;
ret = ttm_bo_move_accel_cleanup(&nvbo->bo, fence, NULL,
evict, no_wait, new_mem);
if (nvbo->channel && nvbo->channel != chan)
ret = nouveau_fence_wait(fence, NULL, false, false);
nouveau_fence_unref((void *)&fence);
return ret;
}
static inline uint32_t
nouveau_bo_mem_ctxdma(struct nouveau_bo *nvbo, struct nouveau_channel *chan,
struct ttm_mem_reg *mem)
{
if (chan == nouveau_bdev(nvbo->bo.bdev)->channel) {
if (mem->mem_type == TTM_PL_TT)
return NvDmaGART;
return NvDmaVRAM;
}
if (mem->mem_type == TTM_PL_TT)
return chan->gart_handle;
return chan->vram_handle;
}
static int
nouveau_bo_move_m2mf(struct ttm_buffer_object *bo, int evict, bool intr,
int no_wait, struct ttm_mem_reg *new_mem)
{
struct nouveau_bo *nvbo = nouveau_bo(bo);
struct drm_nouveau_private *dev_priv = nouveau_bdev(bo->bdev);
struct ttm_mem_reg *old_mem = &bo->mem;
struct nouveau_channel *chan;
uint64_t src_offset, dst_offset;
uint32_t page_count;
int ret;
chan = nvbo->channel;
if (!chan || nvbo->tile_flags || nvbo->no_vm)
chan = dev_priv->channel;
src_offset = old_mem->mm_node->start << PAGE_SHIFT;
dst_offset = new_mem->mm_node->start << PAGE_SHIFT;
if (chan != dev_priv->channel) {
if (old_mem->mem_type == TTM_PL_TT)
src_offset += dev_priv->vm_gart_base;
else
src_offset += dev_priv->vm_vram_base;
if (new_mem->mem_type == TTM_PL_TT)
dst_offset += dev_priv->vm_gart_base;
else
dst_offset += dev_priv->vm_vram_base;
}
ret = RING_SPACE(chan, 3);
if (ret)
return ret;
BEGIN_RING(chan, NvSubM2MF, NV_MEMORY_TO_MEMORY_FORMAT_DMA_SOURCE, 2);
OUT_RING(chan, nouveau_bo_mem_ctxdma(nvbo, chan, old_mem));
OUT_RING(chan, nouveau_bo_mem_ctxdma(nvbo, chan, new_mem));
if (dev_priv->card_type >= NV_50) {
ret = RING_SPACE(chan, 4);
if (ret)
return ret;
BEGIN_RING(chan, NvSubM2MF, 0x0200, 1);
OUT_RING(chan, 1);
BEGIN_RING(chan, NvSubM2MF, 0x021c, 1);
OUT_RING(chan, 1);
}
page_count = new_mem->num_pages;
while (page_count) {
int line_count = (page_count > 2047) ? 2047 : page_count;
if (dev_priv->card_type >= NV_50) {
ret = RING_SPACE(chan, 3);
if (ret)
return ret;
BEGIN_RING(chan, NvSubM2MF, 0x0238, 2);
OUT_RING(chan, upper_32_bits(src_offset));
OUT_RING(chan, upper_32_bits(dst_offset));
}
ret = RING_SPACE(chan, 11);
if (ret)
return ret;
BEGIN_RING(chan, NvSubM2MF,
NV_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN, 8);
OUT_RING(chan, lower_32_bits(src_offset));
OUT_RING(chan, lower_32_bits(dst_offset));
OUT_RING(chan, PAGE_SIZE); /* src_pitch */
OUT_RING(chan, PAGE_SIZE); /* dst_pitch */
OUT_RING(chan, PAGE_SIZE); /* line_length */
OUT_RING(chan, line_count);
OUT_RING(chan, (1<<8)|(1<<0));
OUT_RING(chan, 0);
BEGIN_RING(chan, NvSubM2MF, NV_MEMORY_TO_MEMORY_FORMAT_NOP, 1);
OUT_RING(chan, 0);
page_count -= line_count;
src_offset += (PAGE_SIZE * line_count);
dst_offset += (PAGE_SIZE * line_count);
}
return nouveau_bo_move_accel_cleanup(chan, nvbo, evict, no_wait, new_mem);
}
static int
nouveau_bo_move_flipd(struct ttm_buffer_object *bo, bool evict, bool intr,
bool no_wait, struct ttm_mem_reg *new_mem)
{
u32 placement_memtype = TTM_PL_FLAG_TT | TTM_PL_MASK_CACHING;
struct ttm_placement placement;
struct ttm_mem_reg tmp_mem;
int ret;
placement.fpfn = placement.lpfn = 0;
placement.num_placement = placement.num_busy_placement = 1;
placement.placement = placement.busy_placement = &placement_memtype;
tmp_mem = *new_mem;
tmp_mem.mm_node = NULL;
ret = ttm_bo_mem_space(bo, &placement, &tmp_mem, intr, no_wait);
if (ret)
return ret;
ret = ttm_tt_bind(bo->ttm, &tmp_mem);
if (ret)
goto out;
ret = nouveau_bo_move_m2mf(bo, true, intr, no_wait, &tmp_mem);
if (ret)
goto out;
ret = ttm_bo_move_ttm(bo, evict, no_wait, new_mem);
out:
if (tmp_mem.mm_node) {
spin_lock(&bo->bdev->glob->lru_lock);
drm_mm_put_block(tmp_mem.mm_node);
spin_unlock(&bo->bdev->glob->lru_lock);
}
return ret;
}
static int
nouveau_bo_move_flips(struct ttm_buffer_object *bo, bool evict, bool intr,
bool no_wait, struct ttm_mem_reg *new_mem)
{
u32 placement_memtype = TTM_PL_FLAG_TT | TTM_PL_MASK_CACHING;
struct ttm_placement placement;
struct ttm_mem_reg tmp_mem;
int ret;
placement.fpfn = placement.lpfn = 0;
placement.num_placement = placement.num_busy_placement = 1;
placement.placement = placement.busy_placement = &placement_memtype;
tmp_mem = *new_mem;
tmp_mem.mm_node = NULL;
ret = ttm_bo_mem_space(bo, &placement, &tmp_mem, intr, no_wait);
if (ret)
return ret;
ret = ttm_bo_move_ttm(bo, evict, no_wait, &tmp_mem);
if (ret)
goto out;
ret = nouveau_bo_move_m2mf(bo, evict, intr, no_wait, new_mem);
if (ret)
goto out;
out:
if (tmp_mem.mm_node) {
spin_lock(&bo->bdev->glob->lru_lock);
drm_mm_put_block(tmp_mem.mm_node);
spin_unlock(&bo->bdev->glob->lru_lock);
}
return ret;
}
static int
nouveau_bo_vm_bind(struct ttm_buffer_object *bo, struct ttm_mem_reg *new_mem,
struct nouveau_tile_reg **new_tile)
{
struct drm_nouveau_private *dev_priv = nouveau_bdev(bo->bdev);
struct drm_device *dev = dev_priv->dev;
struct nouveau_bo *nvbo = nouveau_bo(bo);
uint64_t offset;
int ret;
if (nvbo->no_vm || new_mem->mem_type != TTM_PL_VRAM) {
/* Nothing to do. */
*new_tile = NULL;
return 0;
}
offset = new_mem->mm_node->start << PAGE_SHIFT;
if (dev_priv->card_type == NV_50) {
ret = nv50_mem_vm_bind_linear(dev,
offset + dev_priv->vm_vram_base,
new_mem->size, nvbo->tile_flags,
offset);
if (ret)
return ret;
} else if (dev_priv->card_type >= NV_10) {
*new_tile = nv10_mem_set_tiling(dev, offset, new_mem->size,
nvbo->tile_mode);
}
return 0;
}
static void
nouveau_bo_vm_cleanup(struct ttm_buffer_object *bo,
struct nouveau_tile_reg *new_tile,
struct nouveau_tile_reg **old_tile)
{
struct drm_nouveau_private *dev_priv = nouveau_bdev(bo->bdev);
struct drm_device *dev = dev_priv->dev;
if (dev_priv->card_type >= NV_10 &&
dev_priv->card_type < NV_50) {
if (*old_tile)
nv10_mem_expire_tiling(dev, *old_tile, bo->sync_obj);
*old_tile = new_tile;
}
}
static int
nouveau_bo_move(struct ttm_buffer_object *bo, bool evict, bool intr,
bool no_wait, struct ttm_mem_reg *new_mem)
{
struct drm_nouveau_private *dev_priv = nouveau_bdev(bo->bdev);
struct nouveau_bo *nvbo = nouveau_bo(bo);
struct ttm_mem_reg *old_mem = &bo->mem;
struct nouveau_tile_reg *new_tile = NULL;
int ret = 0;
ret = nouveau_bo_vm_bind(bo, new_mem, &new_tile);
if (ret)
return ret;
/* Software copy if the card isn't up and running yet. */
if (dev_priv->init_state != NOUVEAU_CARD_INIT_DONE ||
!dev_priv->channel) {
ret = ttm_bo_move_memcpy(bo, evict, no_wait, new_mem);
goto out;
}
/* Fake bo copy. */
if (old_mem->mem_type == TTM_PL_SYSTEM && !bo->ttm) {
BUG_ON(bo->mem.mm_node != NULL);
bo->mem = *new_mem;
new_mem->mm_node = NULL;
goto out;
}
/* Hardware assisted copy. */
if (new_mem->mem_type == TTM_PL_SYSTEM)
ret = nouveau_bo_move_flipd(bo, evict, intr, no_wait, new_mem);
else if (old_mem->mem_type == TTM_PL_SYSTEM)
ret = nouveau_bo_move_flips(bo, evict, intr, no_wait, new_mem);
else
ret = nouveau_bo_move_m2mf(bo, evict, intr, no_wait, new_mem);
if (!ret)
goto out;
/* Fallback to software copy. */
ret = ttm_bo_move_memcpy(bo, evict, no_wait, new_mem);
out:
if (ret)
nouveau_bo_vm_cleanup(bo, NULL, &new_tile);
else
nouveau_bo_vm_cleanup(bo, new_tile, &nvbo->tile);
return ret;
}
static int
nouveau_bo_verify_access(struct ttm_buffer_object *bo, struct file *filp)
{
return 0;
}
struct ttm_bo_driver nouveau_bo_driver = {
.create_ttm_backend_entry = nouveau_bo_create_ttm_backend_entry,
.invalidate_caches = nouveau_bo_invalidate_caches,
.init_mem_type = nouveau_bo_init_mem_type,
.evict_flags = nouveau_bo_evict_flags,
.move = nouveau_bo_move,
.verify_access = nouveau_bo_verify_access,
.sync_obj_signaled = nouveau_fence_signalled,
.sync_obj_wait = nouveau_fence_wait,
.sync_obj_flush = nouveau_fence_flush,
.sync_obj_unref = nouveau_fence_unref,
.sync_obj_ref = nouveau_fence_ref,
};