linux/drivers/gpu/drm/nouveau/nouveau_gem.c
Maarten Lankhorst 60e9eabf41 Backmerge remote-tracking branch 'drm/drm-next' into drm-misc-next
Some conflicts with ttm_bo->offset removal, but drm-misc-next needs updating to v5.8.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
2020-06-29 12:16:26 +02:00

974 lines
24 KiB
C

/*
* 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 "nouveau_drv.h"
#include "nouveau_dma.h"
#include "nouveau_fence.h"
#include "nouveau_abi16.h"
#include "nouveau_ttm.h"
#include "nouveau_gem.h"
#include "nouveau_mem.h"
#include "nouveau_vmm.h"
#include <nvif/class.h>
void
nouveau_gem_object_del(struct drm_gem_object *gem)
{
struct nouveau_bo *nvbo = nouveau_gem_object(gem);
struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
struct device *dev = drm->dev->dev;
int ret;
ret = pm_runtime_get_sync(dev);
if (WARN_ON(ret < 0 && ret != -EACCES))
return;
if (gem->import_attach)
drm_prime_gem_destroy(gem, nvbo->bo.sg);
ttm_bo_put(&nvbo->bo);
pm_runtime_mark_last_busy(dev);
pm_runtime_put_autosuspend(dev);
}
int
nouveau_gem_object_open(struct drm_gem_object *gem, struct drm_file *file_priv)
{
struct nouveau_cli *cli = nouveau_cli(file_priv);
struct nouveau_bo *nvbo = nouveau_gem_object(gem);
struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
struct device *dev = drm->dev->dev;
struct nouveau_vmm *vmm = cli->svm.cli ? &cli->svm : &cli->vmm;
struct nouveau_vma *vma;
int ret;
if (vmm->vmm.object.oclass < NVIF_CLASS_VMM_NV50)
return 0;
ret = ttm_bo_reserve(&nvbo->bo, false, false, NULL);
if (ret)
return ret;
ret = pm_runtime_get_sync(dev);
if (ret < 0 && ret != -EACCES) {
pm_runtime_put_autosuspend(dev);
goto out;
}
ret = nouveau_vma_new(nvbo, vmm, &vma);
pm_runtime_mark_last_busy(dev);
pm_runtime_put_autosuspend(dev);
out:
ttm_bo_unreserve(&nvbo->bo);
return ret;
}
struct nouveau_gem_object_unmap {
struct nouveau_cli_work work;
struct nouveau_vma *vma;
};
static void
nouveau_gem_object_delete(struct nouveau_vma *vma)
{
nouveau_fence_unref(&vma->fence);
nouveau_vma_del(&vma);
}
static void
nouveau_gem_object_delete_work(struct nouveau_cli_work *w)
{
struct nouveau_gem_object_unmap *work =
container_of(w, typeof(*work), work);
nouveau_gem_object_delete(work->vma);
kfree(work);
}
static void
nouveau_gem_object_unmap(struct nouveau_bo *nvbo, struct nouveau_vma *vma)
{
struct dma_fence *fence = vma->fence ? &vma->fence->base : NULL;
struct nouveau_gem_object_unmap *work;
list_del_init(&vma->head);
if (!fence) {
nouveau_gem_object_delete(vma);
return;
}
if (!(work = kmalloc(sizeof(*work), GFP_KERNEL))) {
WARN_ON(dma_fence_wait_timeout(fence, false, 2 * HZ) <= 0);
nouveau_gem_object_delete(vma);
return;
}
work->work.func = nouveau_gem_object_delete_work;
work->vma = vma;
nouveau_cli_work_queue(vma->vmm->cli, fence, &work->work);
}
void
nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv)
{
struct nouveau_cli *cli = nouveau_cli(file_priv);
struct nouveau_bo *nvbo = nouveau_gem_object(gem);
struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
struct device *dev = drm->dev->dev;
struct nouveau_vmm *vmm = cli->svm.cli ? &cli->svm : & cli->vmm;
struct nouveau_vma *vma;
int ret;
if (vmm->vmm.object.oclass < NVIF_CLASS_VMM_NV50)
return;
ret = ttm_bo_reserve(&nvbo->bo, false, false, NULL);
if (ret)
return;
vma = nouveau_vma_find(nvbo, vmm);
if (vma) {
if (--vma->refs == 0) {
ret = pm_runtime_get_sync(dev);
if (!WARN_ON(ret < 0 && ret != -EACCES)) {
nouveau_gem_object_unmap(nvbo, vma);
pm_runtime_mark_last_busy(dev);
}
pm_runtime_put_autosuspend(dev);
}
}
ttm_bo_unreserve(&nvbo->bo);
}
int
nouveau_gem_new(struct nouveau_cli *cli, u64 size, int align, uint32_t domain,
uint32_t tile_mode, uint32_t tile_flags,
struct nouveau_bo **pnvbo)
{
struct nouveau_drm *drm = cli->drm;
struct nouveau_bo *nvbo;
u32 flags = 0;
int ret;
if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
flags |= TTM_PL_FLAG_VRAM;
if (domain & NOUVEAU_GEM_DOMAIN_GART)
flags |= TTM_PL_FLAG_TT;
if (!flags || domain & NOUVEAU_GEM_DOMAIN_CPU)
flags |= TTM_PL_FLAG_SYSTEM;
if (domain & NOUVEAU_GEM_DOMAIN_COHERENT)
flags |= TTM_PL_FLAG_UNCACHED;
nvbo = nouveau_bo_alloc(cli, &size, &align, flags, tile_mode,
tile_flags);
if (IS_ERR(nvbo))
return PTR_ERR(nvbo);
/* Initialize the embedded gem-object. We return a single gem-reference
* to the caller, instead of a normal nouveau_bo ttm reference. */
ret = drm_gem_object_init(drm->dev, &nvbo->bo.base, size);
if (ret) {
nouveau_bo_ref(NULL, &nvbo);
return ret;
}
ret = nouveau_bo_init(nvbo, size, align, flags, NULL, NULL);
if (ret) {
nouveau_bo_ref(NULL, &nvbo);
return ret;
}
/* we restrict allowed domains on nv50+ to only the types
* that were requested at creation time. not possibly on
* earlier chips without busting the ABI.
*/
nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM |
NOUVEAU_GEM_DOMAIN_GART;
if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA)
nvbo->valid_domains &= domain;
nvbo->bo.persistent_swap_storage = nvbo->bo.base.filp;
*pnvbo = nvbo;
return 0;
}
static int
nouveau_gem_info(struct drm_file *file_priv, struct drm_gem_object *gem,
struct drm_nouveau_gem_info *rep)
{
struct nouveau_cli *cli = nouveau_cli(file_priv);
struct nouveau_bo *nvbo = nouveau_gem_object(gem);
struct nouveau_vmm *vmm = cli->svm.cli ? &cli->svm : &cli->vmm;
struct nouveau_vma *vma;
if (is_power_of_2(nvbo->valid_domains))
rep->domain = nvbo->valid_domains;
else if (nvbo->bo.mem.mem_type == TTM_PL_TT)
rep->domain = NOUVEAU_GEM_DOMAIN_GART;
else
rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
rep->offset = nvbo->offset;
if (vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
vma = nouveau_vma_find(nvbo, vmm);
if (!vma)
return -EINVAL;
rep->offset = vma->addr;
}
rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
rep->map_handle = drm_vma_node_offset_addr(&nvbo->bo.base.vma_node);
rep->tile_mode = nvbo->mode;
rep->tile_flags = nvbo->contig ? 0 : NOUVEAU_GEM_TILE_NONCONTIG;
if (cli->device.info.family >= NV_DEVICE_INFO_V0_FERMI)
rep->tile_flags |= nvbo->kind << 8;
else
if (cli->device.info.family >= NV_DEVICE_INFO_V0_TESLA)
rep->tile_flags |= nvbo->kind << 8 | nvbo->comp << 16;
else
rep->tile_flags |= nvbo->zeta;
return 0;
}
int
nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct nouveau_cli *cli = nouveau_cli(file_priv);
struct drm_nouveau_gem_new *req = data;
struct nouveau_bo *nvbo = NULL;
int ret = 0;
ret = nouveau_gem_new(cli, req->info.size, req->align,
req->info.domain, req->info.tile_mode,
req->info.tile_flags, &nvbo);
if (ret)
return ret;
ret = drm_gem_handle_create(file_priv, &nvbo->bo.base,
&req->info.handle);
if (ret == 0) {
ret = nouveau_gem_info(file_priv, &nvbo->bo.base, &req->info);
if (ret)
drm_gem_handle_delete(file_priv, req->info.handle);
}
/* drop reference from allocate - handle holds it now */
drm_gem_object_put(&nvbo->bo.base);
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 = nouveau_gem_object(gem);
struct ttm_buffer_object *bo = &nvbo->bo;
uint32_t domains = valid_domains & nvbo->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 list;
struct ww_acquire_ctx ticket;
};
static void
validate_fini_no_ticket(struct validate_op *op, struct nouveau_channel *chan,
struct nouveau_fence *fence,
struct drm_nouveau_gem_pushbuf_bo *pbbo)
{
struct nouveau_bo *nvbo;
struct drm_nouveau_gem_pushbuf_bo *b;
while (!list_empty(&op->list)) {
nvbo = list_entry(op->list.next, struct nouveau_bo, entry);
b = &pbbo[nvbo->pbbo_index];
if (likely(fence)) {
nouveau_bo_fence(nvbo, fence, !!b->write_domains);
if (chan->vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
struct nouveau_vma *vma =
(void *)(unsigned long)b->user_priv;
nouveau_fence_unref(&vma->fence);
dma_fence_get(&fence->base);
vma->fence = 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_put(&nvbo->bo.base);
}
}
static void
validate_fini(struct validate_op *op, struct nouveau_channel *chan,
struct nouveau_fence *fence,
struct drm_nouveau_gem_pushbuf_bo *pbbo)
{
validate_fini_no_ticket(op, chan, fence, pbbo);
ww_acquire_fini(&op->ticket);
}
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 nouveau_cli *cli = nouveau_cli(file_priv);
int trycnt = 0;
int ret = -EINVAL, i;
struct nouveau_bo *res_bo = NULL;
LIST_HEAD(gart_list);
LIST_HEAD(vram_list);
LIST_HEAD(both_list);
ww_acquire_init(&op->ticket, &reservation_ww_class);
retry:
if (++trycnt > 100000) {
NV_PRINTK(err, cli, "%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(file_priv, b->handle);
if (!gem) {
NV_PRINTK(err, cli, "Unknown handle 0x%08x\n", b->handle);
ret = -ENOENT;
break;
}
nvbo = nouveau_gem_object(gem);
if (nvbo == res_bo) {
res_bo = NULL;
drm_gem_object_put(gem);
continue;
}
if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
NV_PRINTK(err, cli, "multiple instances of buffer %d on "
"validation list\n", b->handle);
drm_gem_object_put(gem);
ret = -EINVAL;
break;
}
ret = ttm_bo_reserve(&nvbo->bo, true, false, &op->ticket);
if (ret) {
list_splice_tail_init(&vram_list, &op->list);
list_splice_tail_init(&gart_list, &op->list);
list_splice_tail_init(&both_list, &op->list);
validate_fini_no_ticket(op, chan, NULL, NULL);
if (unlikely(ret == -EDEADLK)) {
ret = ttm_bo_reserve_slowpath(&nvbo->bo, true,
&op->ticket);
if (!ret)
res_bo = nvbo;
}
if (unlikely(ret)) {
if (ret != -ERESTARTSYS)
NV_PRINTK(err, cli, "fail reserve\n");
break;
}
}
if (chan->vmm->vmm.object.oclass >= NVIF_CLASS_VMM_NV50) {
struct nouveau_vmm *vmm = chan->vmm;
struct nouveau_vma *vma = nouveau_vma_find(nvbo, vmm);
if (!vma) {
NV_PRINTK(err, cli, "vma not found!\n");
ret = -EINVAL;
break;
}
b->user_priv = (uint64_t)(unsigned long)vma;
} else {
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, &both_list);
else
if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
list_add_tail(&nvbo->entry, &vram_list);
else
if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
list_add_tail(&nvbo->entry, &gart_list);
else {
NV_PRINTK(err, cli, "invalid valid domains: 0x%08x\n",
b->valid_domains);
list_add_tail(&nvbo->entry, &both_list);
ret = -EINVAL;
break;
}
if (nvbo == res_bo)
goto retry;
}
ww_acquire_done(&op->ticket);
list_splice_tail(&vram_list, &op->list);
list_splice_tail(&gart_list, &op->list);
list_splice_tail(&both_list, &op->list);
if (ret)
validate_fini(op, chan, NULL, NULL);
return ret;
}
static int
validate_list(struct nouveau_channel *chan, struct nouveau_cli *cli,
struct list_head *list, struct drm_nouveau_gem_pushbuf_bo *pbbo)
{
struct nouveau_drm *drm = chan->drm;
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_gem_set_domain(&nvbo->bo.base, b->read_domains,
b->write_domains,
b->valid_domains);
if (unlikely(ret)) {
NV_PRINTK(err, cli, "fail set_domain\n");
return ret;
}
ret = nouveau_bo_validate(nvbo, true, false);
if (unlikely(ret)) {
if (ret != -ERESTARTSYS)
NV_PRINTK(err, cli, "fail ttm_validate\n");
return ret;
}
ret = nouveau_fence_sync(nvbo, chan, !!b->write_domains, true);
if (unlikely(ret)) {
if (ret != -ERESTARTSYS)
NV_PRINTK(err, cli, "fail post-validate sync\n");
return ret;
}
if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA) {
if (nvbo->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->offset;
b->presumed.valid = 0;
relocs++;
}
}
return relocs;
}
static int
nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
struct drm_file *file_priv,
struct drm_nouveau_gem_pushbuf_bo *pbbo,
int nr_buffers,
struct validate_op *op, bool *apply_relocs)
{
struct nouveau_cli *cli = nouveau_cli(file_priv);
int ret;
INIT_LIST_HEAD(&op->list);
if (nr_buffers == 0)
return 0;
ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
if (unlikely(ret)) {
if (ret != -ERESTARTSYS)
NV_PRINTK(err, cli, "validate_init\n");
return ret;
}
ret = validate_list(chan, cli, &op->list, pbbo);
if (unlikely(ret < 0)) {
if (ret != -ERESTARTSYS)
NV_PRINTK(err, cli, "validating bo list\n");
validate_fini(op, chan, NULL, NULL);
return ret;
}
*apply_relocs = ret;
return 0;
}
static inline void
u_free(void *addr)
{
kvfree(addr);
}
static inline void *
u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
{
void *mem;
void __user *userptr = (void __force __user *)(uintptr_t)user;
size *= nmemb;
mem = kvmalloc(size, GFP_KERNEL);
if (!mem)
return ERR_PTR(-ENOMEM);
if (copy_from_user(mem, userptr, size)) {
u_free(mem);
return ERR_PTR(-EFAULT);
}
return mem;
}
static int
nouveau_gem_pushbuf_reloc_apply(struct nouveau_cli *cli,
struct drm_nouveau_gem_pushbuf *req,
struct drm_nouveau_gem_pushbuf_reloc *reloc,
struct drm_nouveau_gem_pushbuf_bo *bo)
{
int ret = 0;
unsigned i;
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_PRINTK(err, cli, "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_PRINTK(err, cli, "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_PRINTK(err, cli, "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_PRINTK(err, cli, "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;
}
ret = ttm_bo_wait(&nvbo->bo, false, false);
if (ret) {
NV_PRINTK(err, cli, "reloc wait_idle failed: %d\n", ret);
break;
}
nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
}
u_free(reloc);
return ret;
}
int
nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
struct nouveau_cli *cli = nouveau_cli(file_priv);
struct nouveau_abi16_chan *temp;
struct nouveau_drm *drm = nouveau_drm(dev);
struct drm_nouveau_gem_pushbuf *req = data;
struct drm_nouveau_gem_pushbuf_push *push;
struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
struct drm_nouveau_gem_pushbuf_bo *bo;
struct nouveau_channel *chan = NULL;
struct validate_op op;
struct nouveau_fence *fence = NULL;
int i, j, ret = 0;
bool do_reloc = false, sync = false;
if (unlikely(!abi16))
return -ENOMEM;
list_for_each_entry(temp, &abi16->channels, head) {
if (temp->chan->chid == req->channel) {
chan = temp->chan;
break;
}
}
if (!chan)
return nouveau_abi16_put(abi16, -ENOENT);
if (unlikely(atomic_read(&chan->killed)))
return nouveau_abi16_put(abi16, -ENODEV);
sync = req->vram_available & NOUVEAU_GEM_PUSHBUF_SYNC;
req->vram_available = drm->gem.vram_available;
req->gart_available = drm->gem.gart_available;
if (unlikely(req->nr_push == 0))
goto out_next;
if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
NV_PRINTK(err, cli, "pushbuf push count exceeds limit: %d max %d\n",
req->nr_push, NOUVEAU_GEM_MAX_PUSH);
return nouveau_abi16_put(abi16, -EINVAL);
}
if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
NV_PRINTK(err, cli, "pushbuf bo count exceeds limit: %d max %d\n",
req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
return nouveau_abi16_put(abi16, -EINVAL);
}
if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
NV_PRINTK(err, cli, "pushbuf reloc count exceeds limit: %d max %d\n",
req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
return nouveau_abi16_put(abi16, -EINVAL);
}
push = u_memcpya(req->push, req->nr_push, sizeof(*push));
if (IS_ERR(push))
return nouveau_abi16_put(abi16, PTR_ERR(push));
bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
if (IS_ERR(bo)) {
u_free(push);
return nouveau_abi16_put(abi16, PTR_ERR(bo));
}
/* Ensure all push buffers are on validate list */
for (i = 0; i < req->nr_push; i++) {
if (push[i].bo_index >= req->nr_buffers) {
NV_PRINTK(err, cli, "push %d buffer not in list\n", i);
ret = -EINVAL;
goto out_prevalid;
}
}
/* Validate buffer list */
revalidate:
ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo,
req->nr_buffers, &op, &do_reloc);
if (ret) {
if (ret != -ERESTARTSYS)
NV_PRINTK(err, cli, "validate: %d\n", ret);
goto out_prevalid;
}
/* Apply any relocations that are required */
if (do_reloc) {
if (!reloc) {
validate_fini(&op, chan, NULL, bo);
reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
if (IS_ERR(reloc)) {
ret = PTR_ERR(reloc);
goto out_prevalid;
}
goto revalidate;
}
ret = nouveau_gem_pushbuf_reloc_apply(cli, req, reloc, bo);
if (ret) {
NV_PRINTK(err, cli, "reloc apply: %d\n", ret);
goto out;
}
}
if (chan->dma.ib_max) {
ret = nouveau_dma_wait(chan, req->nr_push + 1, 16);
if (ret) {
NV_PRINTK(err, cli, "nv50cal_space: %d\n", ret);
goto out;
}
for (i = 0; i < req->nr_push; i++) {
struct nouveau_vma *vma = (void *)(unsigned long)
bo[push[i].bo_index].user_priv;
nv50_dma_push(chan, vma->addr + push[i].offset,
push[i].length);
}
} else
if (drm->client.device.info.chipset >= 0x25) {
ret = RING_SPACE(chan, req->nr_push * 2);
if (ret) {
NV_PRINTK(err, cli, "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;
OUT_RING(chan, (nvbo->offset + push[i].offset) | 2);
OUT_RING(chan, 0);
}
} else {
ret = RING_SPACE(chan, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
if (ret) {
NV_PRINTK(err, cli, "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;
uint32_t cmd;
cmd = chan->push.addr + ((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, 0x20000000 |
(nvbo->offset + push[i].offset));
OUT_RING(chan, 0);
for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
OUT_RING(chan, 0);
}
}
ret = nouveau_fence_new(chan, false, &fence);
if (ret) {
NV_PRINTK(err, cli, "error fencing pushbuf: %d\n", ret);
WIND_RING(chan);
goto out;
}
if (sync) {
if (!(ret = nouveau_fence_wait(fence, false, false))) {
if ((ret = dma_fence_get_status(&fence->base)) == 1)
ret = 0;
}
}
out:
validate_fini(&op, chan, fence, bo);
nouveau_fence_unref(&fence);
if (do_reloc) {
struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
u64_to_user_ptr(req->buffers);
for (i = 0; i < req->nr_buffers; i++) {
if (bo[i].presumed.valid)
continue;
if (copy_to_user(&upbbo[i].presumed, &bo[i].presumed,
sizeof(bo[i].presumed))) {
ret = -EFAULT;
break;
}
}
u_free(reloc);
}
out_prevalid:
u_free(bo);
u_free(push);
out_next:
if (chan->dma.ib_max) {
req->suffix0 = 0x00000000;
req->suffix1 = 0x00000000;
} else
if (drm->client.device.info.chipset >= 0x25) {
req->suffix0 = 0x00020000;
req->suffix1 = 0x00000000;
} else {
req->suffix0 = 0x20000000 |
(chan->push.addr + ((chan->dma.cur + 2) << 2));
req->suffix1 = 0x00000000;
}
return nouveau_abi16_put(abi16, ret);
}
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);
bool write = !!(req->flags & NOUVEAU_GEM_CPU_PREP_WRITE);
long lret;
int ret;
gem = drm_gem_object_lookup(file_priv, req->handle);
if (!gem)
return -ENOENT;
nvbo = nouveau_gem_object(gem);
lret = dma_resv_wait_timeout_rcu(nvbo->bo.base.resv, write, true,
no_wait ? 0 : 30 * HZ);
if (!lret)
ret = -EBUSY;
else if (lret > 0)
ret = 0;
else
ret = lret;
nouveau_bo_sync_for_cpu(nvbo);
drm_gem_object_put(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_fini *req = data;
struct drm_gem_object *gem;
struct nouveau_bo *nvbo;
gem = drm_gem_object_lookup(file_priv, req->handle);
if (!gem)
return -ENOENT;
nvbo = nouveau_gem_object(gem);
nouveau_bo_sync_for_device(nvbo);
drm_gem_object_put(gem);
return 0;
}
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(file_priv, req->handle);
if (!gem)
return -ENOENT;
ret = nouveau_gem_info(file_priv, gem, req);
drm_gem_object_put(gem);
return ret;
}