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OpenCloudOS-Kernel/drivers/gpu/drm/nouveau/nouveau_gem.c

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/*
* Copyright (C) 2008 Ben Skeggs.
* 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 THE COPYRIGHT OWNER(S) 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.
*
*/
#include "drmP.h"
#include "drm.h"
#include "nouveau_drv.h"
#include "nouveau_drm.h"
#include "nouveau_dma.h"
#define nouveau_gem_pushbuf_sync(chan) 0
int
nouveau_gem_object_new(struct drm_gem_object *gem)
{
return 0;
}
void
nouveau_gem_object_del(struct drm_gem_object *gem)
{
struct nouveau_bo *nvbo = gem->driver_private;
struct ttm_buffer_object *bo = &nvbo->bo;
if (!nvbo)
return;
nvbo->gem = NULL;
if (unlikely(nvbo->cpu_filp))
ttm_bo_synccpu_write_release(bo);
if (unlikely(nvbo->pin_refcnt)) {
nvbo->pin_refcnt = 1;
nouveau_bo_unpin(nvbo);
}
ttm_bo_unref(&bo);
drm_gem_object_release(gem);
kfree(gem);
}
int
nouveau_gem_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 nouveau_bo *nvbo;
int ret;
ret = nouveau_bo_new(dev, chan, size, align, flags, tile_mode,
tile_flags, no_vm, mappable, pnvbo);
if (ret)
return ret;
nvbo = *pnvbo;
nvbo->gem = drm_gem_object_alloc(dev, nvbo->bo.mem.size);
if (!nvbo->gem) {
nouveau_bo_ref(NULL, pnvbo);
return -ENOMEM;
}
nvbo->bo.persistant_swap_storage = nvbo->gem->filp;
nvbo->gem->driver_private = nvbo;
return 0;
}
static int
nouveau_gem_info(struct drm_gem_object *gem, struct drm_nouveau_gem_info *rep)
{
struct nouveau_bo *nvbo = nouveau_gem_object(gem);
if (nvbo->bo.mem.mem_type == TTM_PL_TT)
rep->domain = NOUVEAU_GEM_DOMAIN_GART;
else
rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
rep->offset = nvbo->bo.offset;
rep->map_handle = nvbo->mappable ? nvbo->bo.addr_space_offset : 0;
rep->tile_mode = nvbo->tile_mode;
rep->tile_flags = nvbo->tile_flags;
return 0;
}
static bool
nouveau_gem_tile_flags_valid(struct drm_device *dev, uint32_t tile_flags) {
switch (tile_flags) {
case 0x0000:
case 0x1800:
case 0x2800:
case 0x4800:
case 0x7000:
case 0x7400:
case 0x7a00:
case 0xe000:
break;
default:
NV_ERROR(dev, "bad page flags: 0x%08x\n", tile_flags);
return false;
}
return true;
}
int
nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct drm_nouveau_gem_new *req = data;
struct nouveau_bo *nvbo = NULL;
struct nouveau_channel *chan = NULL;
uint32_t flags = 0;
int ret = 0;
if (unlikely(dev_priv->ttm.bdev.dev_mapping == NULL))
dev_priv->ttm.bdev.dev_mapping = dev_priv->dev->dev_mapping;
if (req->channel_hint) {
NOUVEAU_GET_USER_CHANNEL_WITH_RETURN(req->channel_hint,
file_priv, chan);
}
if (req->info.domain & NOUVEAU_GEM_DOMAIN_VRAM)
flags |= TTM_PL_FLAG_VRAM;
if (req->info.domain & NOUVEAU_GEM_DOMAIN_GART)
flags |= TTM_PL_FLAG_TT;
if (!flags || req->info.domain & NOUVEAU_GEM_DOMAIN_CPU)
flags |= TTM_PL_FLAG_SYSTEM;
if (!nouveau_gem_tile_flags_valid(dev, req->info.tile_flags))
return -EINVAL;
ret = nouveau_gem_new(dev, chan, req->info.size, req->align, flags,
req->info.tile_mode, req->info.tile_flags, false,
(req->info.domain & NOUVEAU_GEM_DOMAIN_MAPPABLE),
&nvbo);
if (ret)
return ret;
ret = nouveau_gem_info(nvbo->gem, &req->info);
if (ret)
goto out;
ret = drm_gem_handle_create(file_priv, nvbo->gem, &req->info.handle);
/* drop reference from allocate - handle holds it now */
drm_gem_object_unreference_unlocked(nvbo->gem);
out:
return ret;
}
static int
nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
uint32_t write_domains, uint32_t valid_domains)
{
struct nouveau_bo *nvbo = gem->driver_private;
struct ttm_buffer_object *bo = &nvbo->bo;
uint32_t domains = valid_domains &
(write_domains ? write_domains : read_domains);
uint32_t pref_flags = 0, valid_flags = 0;
if (!domains)
return -EINVAL;
if (valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
valid_flags |= TTM_PL_FLAG_VRAM;
if (valid_domains & NOUVEAU_GEM_DOMAIN_GART)
valid_flags |= TTM_PL_FLAG_TT;
if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
bo->mem.mem_type == TTM_PL_VRAM)
pref_flags |= TTM_PL_FLAG_VRAM;
else if ((domains & NOUVEAU_GEM_DOMAIN_GART) &&
bo->mem.mem_type == TTM_PL_TT)
pref_flags |= TTM_PL_FLAG_TT;
else if (domains & NOUVEAU_GEM_DOMAIN_VRAM)
pref_flags |= TTM_PL_FLAG_VRAM;
else
pref_flags |= TTM_PL_FLAG_TT;
nouveau_bo_placement_set(nvbo, pref_flags, valid_flags);
return 0;
}
struct validate_op {
struct list_head vram_list;
struct list_head gart_list;
struct list_head both_list;
};
static void
validate_fini_list(struct list_head *list, struct nouveau_fence *fence)
{
struct list_head *entry, *tmp;
struct nouveau_bo *nvbo;
list_for_each_safe(entry, tmp, list) {
nvbo = list_entry(entry, struct nouveau_bo, entry);
if (likely(fence)) {
struct nouveau_fence *prev_fence;
spin_lock(&nvbo->bo.lock);
prev_fence = nvbo->bo.sync_obj;
nvbo->bo.sync_obj = nouveau_fence_ref(fence);
spin_unlock(&nvbo->bo.lock);
nouveau_fence_unref((void *)&prev_fence);
}
if (unlikely(nvbo->validate_mapped)) {
ttm_bo_kunmap(&nvbo->kmap);
nvbo->validate_mapped = false;
}
list_del(&nvbo->entry);
nvbo->reserved_by = NULL;
ttm_bo_unreserve(&nvbo->bo);
drm_gem_object_unreference_unlocked(nvbo->gem);
}
}
static void
validate_fini(struct validate_op *op, struct nouveau_fence* fence)
{
validate_fini_list(&op->vram_list, fence);
validate_fini_list(&op->gart_list, fence);
validate_fini_list(&op->both_list, fence);
}
static int
validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
struct drm_nouveau_gem_pushbuf_bo *pbbo,
int nr_buffers, struct validate_op *op)
{
struct drm_device *dev = chan->dev;
struct drm_nouveau_private *dev_priv = dev->dev_private;
uint32_t sequence;
int trycnt = 0;
int ret, i;
sequence = atomic_add_return(1, &dev_priv->ttm.validate_sequence);
retry:
if (++trycnt > 100000) {
NV_ERROR(dev, "%s failed and gave up.\n", __func__);
return -EINVAL;
}
for (i = 0; i < nr_buffers; i++) {
struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
struct drm_gem_object *gem;
struct nouveau_bo *nvbo;
gem = drm_gem_object_lookup(dev, file_priv, b->handle);
if (!gem) {
NV_ERROR(dev, "Unknown handle 0x%08x\n", b->handle);
validate_fini(op, NULL);
return -ENOENT;
}
nvbo = gem->driver_private;
if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
NV_ERROR(dev, "multiple instances of buffer %d on "
"validation list\n", b->handle);
validate_fini(op, NULL);
return -EINVAL;
}
ret = ttm_bo_reserve(&nvbo->bo, false, false, true, sequence);
if (ret) {
validate_fini(op, NULL);
if (ret == -EAGAIN)
ret = ttm_bo_wait_unreserved(&nvbo->bo, false);
drm_gem_object_unreference_unlocked(gem);
if (ret) {
NV_ERROR(dev, "fail reserve\n");
return ret;
}
goto retry;
}
b->user_priv = (uint64_t)(unsigned long)nvbo;
nvbo->reserved_by = file_priv;
nvbo->pbbo_index = i;
if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
(b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
list_add_tail(&nvbo->entry, &op->both_list);
else
if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
list_add_tail(&nvbo->entry, &op->vram_list);
else
if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
list_add_tail(&nvbo->entry, &op->gart_list);
else {
NV_ERROR(dev, "invalid valid domains: 0x%08x\n",
b->valid_domains);
list_add_tail(&nvbo->entry, &op->both_list);
validate_fini(op, NULL);
return -EINVAL;
}
if (unlikely(atomic_read(&nvbo->bo.cpu_writers) > 0)) {
validate_fini(op, NULL);
if (nvbo->cpu_filp == file_priv) {
NV_ERROR(dev, "bo %p mapped by process trying "
"to validate it!\n", nvbo);
return -EINVAL;
}
mutex_unlock(&drm_global_mutex);
ret = ttm_bo_wait_cpu(&nvbo->bo, false);
mutex_lock(&drm_global_mutex);
if (ret) {
NV_ERROR(dev, "fail wait_cpu\n");
return ret;
}
goto retry;
}
}
return 0;
}
static int
validate_list(struct nouveau_channel *chan, struct list_head *list,
struct drm_nouveau_gem_pushbuf_bo *pbbo, uint64_t user_pbbo_ptr)
{
struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
(void __force __user *)(uintptr_t)user_pbbo_ptr;
struct drm_device *dev = chan->dev;
struct nouveau_bo *nvbo;
int ret, relocs = 0;
list_for_each_entry(nvbo, list, entry) {
struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
ret = nouveau_fence_sync(nvbo->bo.sync_obj, chan);
if (unlikely(ret)) {
NV_ERROR(dev, "fail pre-validate sync\n");
return ret;
}
ret = nouveau_gem_set_domain(nvbo->gem, b->read_domains,
b->write_domains,
b->valid_domains);
if (unlikely(ret)) {
NV_ERROR(dev, "fail set_domain\n");
return ret;
}
nvbo->channel = (b->read_domains & (1 << 31)) ? NULL : chan;
ret = ttm_bo_validate(&nvbo->bo, &nvbo->placement,
false, false, false);
nvbo->channel = NULL;
if (unlikely(ret)) {
NV_ERROR(dev, "fail ttm_validate\n");
return ret;
}
ret = nouveau_fence_sync(nvbo->bo.sync_obj, chan);
if (unlikely(ret)) {
NV_ERROR(dev, "fail post-validate sync\n");
return ret;
}
if (nvbo->bo.offset == b->presumed.offset &&
((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
(nvbo->bo.mem.mem_type == TTM_PL_TT &&
b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
continue;
if (nvbo->bo.mem.mem_type == TTM_PL_TT)
b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
else
b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
b->presumed.offset = nvbo->bo.offset;
b->presumed.valid = 0;
relocs++;
if (DRM_COPY_TO_USER(&upbbo[nvbo->pbbo_index].presumed,
&b->presumed, sizeof(b->presumed)))
return -EFAULT;
}
return relocs;
}
static int
nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
struct drm_file *file_priv,
struct drm_nouveau_gem_pushbuf_bo *pbbo,
uint64_t user_buffers, int nr_buffers,
struct validate_op *op, int *apply_relocs)
{
struct drm_device *dev = chan->dev;
int ret, relocs = 0;
INIT_LIST_HEAD(&op->vram_list);
INIT_LIST_HEAD(&op->gart_list);
INIT_LIST_HEAD(&op->both_list);
if (nr_buffers == 0)
return 0;
ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
if (unlikely(ret)) {
NV_ERROR(dev, "validate_init\n");
return ret;
}
ret = validate_list(chan, &op->vram_list, pbbo, user_buffers);
if (unlikely(ret < 0)) {
NV_ERROR(dev, "validate vram_list\n");
validate_fini(op, NULL);
return ret;
}
relocs += ret;
ret = validate_list(chan, &op->gart_list, pbbo, user_buffers);
if (unlikely(ret < 0)) {
NV_ERROR(dev, "validate gart_list\n");
validate_fini(op, NULL);
return ret;
}
relocs += ret;
ret = validate_list(chan, &op->both_list, pbbo, user_buffers);
if (unlikely(ret < 0)) {
NV_ERROR(dev, "validate both_list\n");
validate_fini(op, NULL);
return ret;
}
relocs += ret;
*apply_relocs = relocs;
return 0;
}
static inline void *
u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
{
void *mem;
void __user *userptr = (void __force __user *)(uintptr_t)user;
mem = kmalloc(nmemb * size, GFP_KERNEL);
if (!mem)
return ERR_PTR(-ENOMEM);
if (DRM_COPY_FROM_USER(mem, userptr, nmemb * size)) {
kfree(mem);
return ERR_PTR(-EFAULT);
}
return mem;
}
static int
nouveau_gem_pushbuf_reloc_apply(struct drm_device *dev,
struct drm_nouveau_gem_pushbuf *req,
struct drm_nouveau_gem_pushbuf_bo *bo)
{
struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
int ret = 0;
unsigned i;
reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
if (IS_ERR(reloc))
return PTR_ERR(reloc);
for (i = 0; i < req->nr_relocs; i++) {
struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
struct drm_nouveau_gem_pushbuf_bo *b;
struct nouveau_bo *nvbo;
uint32_t data;
if (unlikely(r->bo_index > req->nr_buffers)) {
NV_ERROR(dev, "reloc bo index invalid\n");
ret = -EINVAL;
break;
}
b = &bo[r->bo_index];
if (b->presumed.valid)
continue;
if (unlikely(r->reloc_bo_index > req->nr_buffers)) {
NV_ERROR(dev, "reloc container bo index invalid\n");
ret = -EINVAL;
break;
}
nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
if (unlikely(r->reloc_bo_offset + 4 >
nvbo->bo.mem.num_pages << PAGE_SHIFT)) {
NV_ERROR(dev, "reloc outside of bo\n");
ret = -EINVAL;
break;
}
if (!nvbo->kmap.virtual) {
ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages,
&nvbo->kmap);
if (ret) {
NV_ERROR(dev, "failed kmap for reloc\n");
break;
}
nvbo->validate_mapped = true;
}
if (r->flags & NOUVEAU_GEM_RELOC_LOW)
data = b->presumed.offset + r->data;
else
if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
data = (b->presumed.offset + r->data) >> 32;
else
data = r->data;
if (r->flags & NOUVEAU_GEM_RELOC_OR) {
if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
data |= r->tor;
else
data |= r->vor;
}
spin_lock(&nvbo->bo.lock);
ret = ttm_bo_wait(&nvbo->bo, false, false, false);
spin_unlock(&nvbo->bo.lock);
if (ret) {
NV_ERROR(dev, "reloc wait_idle failed: %d\n", ret);
break;
}
nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
}
kfree(reloc);
return ret;
}
int
nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct drm_nouveau_gem_pushbuf *req = data;
struct drm_nouveau_gem_pushbuf_push *push;
struct drm_nouveau_gem_pushbuf_bo *bo;
struct nouveau_channel *chan;
struct validate_op op;
struct nouveau_fence *fence = NULL;
int i, j, ret = 0, do_reloc = 0;
NOUVEAU_GET_USER_CHANNEL_WITH_RETURN(req->channel, file_priv, chan);
req->vram_available = dev_priv->fb_aper_free;
req->gart_available = dev_priv->gart_info.aper_free;
if (unlikely(req->nr_push == 0))
goto out_next;
if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
NV_ERROR(dev, "pushbuf push count exceeds limit: %d max %d\n",
req->nr_push, NOUVEAU_GEM_MAX_PUSH);
return -EINVAL;
}
if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
NV_ERROR(dev, "pushbuf bo count exceeds limit: %d max %d\n",
req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
return -EINVAL;
}
if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
NV_ERROR(dev, "pushbuf reloc count exceeds limit: %d max %d\n",
req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
return -EINVAL;
}
push = u_memcpya(req->push, req->nr_push, sizeof(*push));
if (IS_ERR(push))
return PTR_ERR(push);
bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
if (IS_ERR(bo)) {
kfree(push);
return PTR_ERR(bo);
}
/* Mark push buffers as being used on PFIFO, the validation code
* will then make sure that if the pushbuf bo moves, that they
* happen on the kernel channel, which will in turn cause a sync
* to happen before we try and submit the push buffer.
*/
for (i = 0; i < req->nr_push; i++) {
if (push[i].bo_index >= req->nr_buffers) {
NV_ERROR(dev, "push %d buffer not in list\n", i);
ret = -EINVAL;
goto out;
}
bo[push[i].bo_index].read_domains |= (1 << 31);
}
/* Validate buffer list */
ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
req->nr_buffers, &op, &do_reloc);
if (ret) {
NV_ERROR(dev, "validate: %d\n", ret);
goto out;
}
/* Apply any relocations that are required */
if (do_reloc) {
ret = nouveau_gem_pushbuf_reloc_apply(dev, req, bo);
if (ret) {
NV_ERROR(dev, "reloc apply: %d\n", ret);
goto out;
}
}
if (chan->dma.ib_max) {
ret = nouveau_dma_wait(chan, req->nr_push + 1, 6);
if (ret) {
NV_INFO(dev, "nv50cal_space: %d\n", ret);
goto out;
}
for (i = 0; i < req->nr_push; i++) {
struct nouveau_bo *nvbo = (void *)(unsigned long)
bo[push[i].bo_index].user_priv;
nv50_dma_push(chan, nvbo, push[i].offset,
push[i].length);
}
} else
if (dev_priv->chipset >= 0x25) {
ret = RING_SPACE(chan, req->nr_push * 2);
if (ret) {
NV_ERROR(dev, "cal_space: %d\n", ret);
goto out;
}
for (i = 0; i < req->nr_push; i++) {
struct nouveau_bo *nvbo = (void *)(unsigned long)
bo[push[i].bo_index].user_priv;
struct drm_mm_node *mem = nvbo->bo.mem.mm_node;
OUT_RING(chan, ((mem->start << PAGE_SHIFT) +
push[i].offset) | 2);
OUT_RING(chan, 0);
}
} else {
ret = RING_SPACE(chan, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
if (ret) {
NV_ERROR(dev, "jmp_space: %d\n", ret);
goto out;
}
for (i = 0; i < req->nr_push; i++) {
struct nouveau_bo *nvbo = (void *)(unsigned long)
bo[push[i].bo_index].user_priv;
struct drm_mm_node *mem = nvbo->bo.mem.mm_node;
uint32_t cmd;
cmd = chan->pushbuf_base + ((chan->dma.cur + 2) << 2);
cmd |= 0x20000000;
if (unlikely(cmd != req->suffix0)) {
if (!nvbo->kmap.virtual) {
ret = ttm_bo_kmap(&nvbo->bo, 0,
nvbo->bo.mem.
num_pages,
&nvbo->kmap);
if (ret) {
WIND_RING(chan);
goto out;
}
nvbo->validate_mapped = true;
}
nouveau_bo_wr32(nvbo, (push[i].offset +
push[i].length - 8) / 4, cmd);
}
OUT_RING(chan, ((mem->start << PAGE_SHIFT) +
push[i].offset) | 0x20000000);
OUT_RING(chan, 0);
for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
OUT_RING(chan, 0);
}
}
ret = nouveau_fence_new(chan, &fence, true);
if (ret) {
NV_ERROR(dev, "error fencing pushbuf: %d\n", ret);
WIND_RING(chan);
goto out;
}
out:
validate_fini(&op, fence);
nouveau_fence_unref((void**)&fence);
kfree(bo);
kfree(push);
out_next:
if (chan->dma.ib_max) {
req->suffix0 = 0x00000000;
req->suffix1 = 0x00000000;
} else
if (dev_priv->chipset >= 0x25) {
req->suffix0 = 0x00020000;
req->suffix1 = 0x00000000;
} else {
req->suffix0 = 0x20000000 |
(chan->pushbuf_base + ((chan->dma.cur + 2) << 2));
req->suffix1 = 0x00000000;
}
return ret;
}
static inline uint32_t
domain_to_ttm(struct nouveau_bo *nvbo, uint32_t domain)
{
uint32_t flags = 0;
if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
flags |= TTM_PL_FLAG_VRAM;
if (domain & NOUVEAU_GEM_DOMAIN_GART)
flags |= TTM_PL_FLAG_TT;
return flags;
}
int
nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_nouveau_gem_cpu_prep *req = data;
struct drm_gem_object *gem;
struct nouveau_bo *nvbo;
bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
int ret = -EINVAL;
gem = drm_gem_object_lookup(dev, file_priv, req->handle);
if (!gem)
return -ENOENT;
nvbo = nouveau_gem_object(gem);
if (nvbo->cpu_filp) {
if (nvbo->cpu_filp == file_priv)
goto out;
ret = ttm_bo_wait_cpu(&nvbo->bo, no_wait);
if (ret)
goto out;
}
if (req->flags & NOUVEAU_GEM_CPU_PREP_NOBLOCK) {
spin_lock(&nvbo->bo.lock);
ret = ttm_bo_wait(&nvbo->bo, false, false, no_wait);
spin_unlock(&nvbo->bo.lock);
} else {
ret = ttm_bo_synccpu_write_grab(&nvbo->bo, no_wait);
if (ret == 0)
nvbo->cpu_filp = file_priv;
}
out:
drm_gem_object_unreference_unlocked(gem);
return ret;
}
int
nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_nouveau_gem_cpu_prep *req = data;
struct drm_gem_object *gem;
struct nouveau_bo *nvbo;
int ret = -EINVAL;
gem = drm_gem_object_lookup(dev, file_priv, req->handle);
if (!gem)
return -ENOENT;
nvbo = nouveau_gem_object(gem);
if (nvbo->cpu_filp != file_priv)
goto out;
nvbo->cpu_filp = NULL;
ttm_bo_synccpu_write_release(&nvbo->bo);
ret = 0;
out:
drm_gem_object_unreference_unlocked(gem);
return ret;
}
int
nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_nouveau_gem_info *req = data;
struct drm_gem_object *gem;
int ret;
gem = drm_gem_object_lookup(dev, file_priv, req->handle);
if (!gem)
return -ENOENT;
ret = nouveau_gem_info(gem, req);
drm_gem_object_unreference_unlocked(gem);
return ret;
}
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