diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_gem.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_gem.c | 992 |
1 files changed, 992 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c new file mode 100644 index 000000000000..6ac804b0c9f9 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nouveau_gem.c @@ -0,0 +1,992 @@ +/* + * 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); +} + +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; + + NOUVEAU_CHECK_INITIALISED_WITH_RETURN; + + 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); +out: + mutex_lock(&dev->struct_mutex); + drm_gem_object_handle_unreference(nvbo->gem); + mutex_unlock(&dev->struct_mutex); + + if (ret) + drm_gem_object_unreference(nvbo->gem); + 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; + uint64_t flags; + + if (!valid_domains || (!read_domains && !write_domains)) + return -EINVAL; + + if (write_domains) { + if ((valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) && + (write_domains & NOUVEAU_GEM_DOMAIN_VRAM)) + flags = TTM_PL_FLAG_VRAM; + else + if ((valid_domains & NOUVEAU_GEM_DOMAIN_GART) && + (write_domains & NOUVEAU_GEM_DOMAIN_GART)) + flags = TTM_PL_FLAG_TT; + else + return -EINVAL; + } else { + if ((valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) && + (read_domains & NOUVEAU_GEM_DOMAIN_VRAM) && + bo->mem.mem_type == TTM_PL_VRAM) + flags = TTM_PL_FLAG_VRAM; + else + if ((valid_domains & NOUVEAU_GEM_DOMAIN_GART) && + (read_domains & NOUVEAU_GEM_DOMAIN_GART) && + bo->mem.mem_type == TTM_PL_TT) + flags = TTM_PL_FLAG_TT; + else + if ((valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) && + (read_domains & NOUVEAU_GEM_DOMAIN_VRAM)) + flags = TTM_PL_FLAG_VRAM; + else + flags = TTM_PL_FLAG_TT; + } + + nouveau_bo_placement_set(nvbo, 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); + } + + list_del(&nvbo->entry); + nvbo->reserved_by = NULL; + ttm_bo_unreserve(&nvbo->bo); + drm_gem_object_unreference(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 -EINVAL; + } + 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(gem); + if (ret) + return ret; + goto retry; + } + + 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; + } + + ret = ttm_bo_wait_cpu(&nvbo->bo, false); + if (ret) + 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 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]; + struct nouveau_fence *prev_fence = nvbo->bo.sync_obj; + + if (prev_fence && nouveau_fence_channel(prev_fence) != chan) { + spin_lock(&nvbo->bo.lock); + ret = ttm_bo_wait(&nvbo->bo, false, false, false); + spin_unlock(&nvbo->bo.lock); + if (unlikely(ret)) + return ret; + } + + ret = nouveau_gem_set_domain(nvbo->gem, b->read_domains, + b->write_domains, + b->valid_domains); + if (unlikely(ret)) + return ret; + + nvbo->channel = chan; + ret = ttm_bo_validate(&nvbo->bo, &nvbo->placement, + false, false); + nvbo->channel = NULL; + if (unlikely(ret)) + 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_ok = 0; + relocs++; + + if (DRM_COPY_TO_USER(&upbbo[nvbo->pbbo_index], b, sizeof(*b))) + 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) +{ + 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)) + return ret; + + ret = validate_list(chan, &op->vram_list, pbbo, user_buffers); + if (unlikely(ret < 0)) { + validate_fini(op, NULL); + return ret; + } + relocs += ret; + + ret = validate_list(chan, &op->gart_list, pbbo, user_buffers); + if (unlikely(ret < 0)) { + validate_fini(op, NULL); + return ret; + } + relocs += ret; + + ret = validate_list(chan, &op->both_list, pbbo, user_buffers); + if (unlikely(ret < 0)) { + 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 nouveau_channel *chan, int nr_bo, + struct drm_nouveau_gem_pushbuf_bo *bo, + unsigned nr_relocs, uint64_t ptr_relocs, + unsigned nr_dwords, unsigned first_dword, + uint32_t *pushbuf, bool is_iomem) +{ + struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL; + struct drm_device *dev = chan->dev; + int ret = 0; + unsigned i; + + reloc = u_memcpya(ptr_relocs, nr_relocs, sizeof(*reloc)); + if (IS_ERR(reloc)) + return PTR_ERR(reloc); + + for (i = 0; i < nr_relocs; i++) { + struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i]; + struct drm_nouveau_gem_pushbuf_bo *b; + uint32_t data; + + if (r->bo_index >= nr_bo || r->reloc_index < first_dword || + r->reloc_index >= first_dword + nr_dwords) { + NV_ERROR(dev, "Bad relocation %d\n", i); + NV_ERROR(dev, " bo: %d max %d\n", r->bo_index, nr_bo); + NV_ERROR(dev, " id: %d max %d\n", r->reloc_index, nr_dwords); + ret = -EINVAL; + break; + } + + b = &bo[r->bo_index]; + if (b->presumed_ok) + continue; + + 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; + } + + if (is_iomem) + iowrite32_native(data, (void __force __iomem *) + &pushbuf[r->reloc_index]); + else + pushbuf[r->reloc_index] = data; + } + + kfree(reloc); + return ret; +} + +int +nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct drm_nouveau_gem_pushbuf *req = data; + struct drm_nouveau_gem_pushbuf_bo *bo = NULL; + struct nouveau_channel *chan; + struct validate_op op; + struct nouveau_fence* fence = 0; + uint32_t *pushbuf = NULL; + int ret = 0, do_reloc = 0, i; + + NOUVEAU_CHECK_INITIALISED_WITH_RETURN; + NOUVEAU_GET_USER_CHANNEL_WITH_RETURN(req->channel, file_priv, chan); + + if (req->nr_dwords >= chan->dma.max || + req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS || + req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS) { + NV_ERROR(dev, "Pushbuf config exceeds limits:\n"); + NV_ERROR(dev, " dwords : %d max %d\n", req->nr_dwords, + chan->dma.max - 1); + NV_ERROR(dev, " buffers: %d max %d\n", req->nr_buffers, + NOUVEAU_GEM_MAX_BUFFERS); + NV_ERROR(dev, " relocs : %d max %d\n", req->nr_relocs, + NOUVEAU_GEM_MAX_RELOCS); + return -EINVAL; + } + + pushbuf = u_memcpya(req->dwords, req->nr_dwords, sizeof(uint32_t)); + if (IS_ERR(pushbuf)) + return PTR_ERR(pushbuf); + + bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo)); + if (IS_ERR(bo)) { + kfree(pushbuf); + return PTR_ERR(bo); + } + + mutex_lock(&dev->struct_mutex); + + /* Validate buffer list */ + ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers, + req->nr_buffers, &op, &do_reloc); + if (ret) + goto out; + + /* Apply any relocations that are required */ + if (do_reloc) { + ret = nouveau_gem_pushbuf_reloc_apply(chan, req->nr_buffers, + bo, req->nr_relocs, + req->relocs, + req->nr_dwords, 0, + pushbuf, false); + if (ret) + goto out; + } + + /* Emit push buffer to the hw + */ + ret = RING_SPACE(chan, req->nr_dwords); + if (ret) + goto out; + + OUT_RINGp(chan, pushbuf, req->nr_dwords); + + ret = nouveau_fence_new(chan, &fence, true); + if (ret) { + NV_ERROR(dev, "error fencing pushbuf: %d\n", ret); + WIND_RING(chan); + goto out; + } + + if (nouveau_gem_pushbuf_sync(chan)) { + ret = nouveau_fence_wait(fence, NULL, false, false); + if (ret) { + for (i = 0; i < req->nr_dwords; i++) + NV_ERROR(dev, "0x%08x\n", pushbuf[i]); + NV_ERROR(dev, "^^ above push buffer is fail :(\n"); + } + } + +out: + validate_fini(&op, fence); + nouveau_fence_unref((void**)&fence); + mutex_unlock(&dev->struct_mutex); + kfree(pushbuf); + kfree(bo); + return ret; +} + +#define PUSHBUF_CAL (dev_priv->card_type >= NV_20) + +int +nouveau_gem_ioctl_pushbuf_call(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_call *req = data; + struct drm_nouveau_gem_pushbuf_bo *bo = NULL; + struct nouveau_channel *chan; + struct drm_gem_object *gem; + struct nouveau_bo *pbbo; + struct validate_op op; + struct nouveau_fence* fence = 0; + int i, ret = 0, do_reloc = 0; + + NOUVEAU_CHECK_INITIALISED_WITH_RETURN; + NOUVEAU_GET_USER_CHANNEL_WITH_RETURN(req->channel, file_priv, chan); + + if (unlikely(req->handle == 0)) + goto out_next; + + if (req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS || + req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS) { + NV_ERROR(dev, "Pushbuf config exceeds limits:\n"); + NV_ERROR(dev, " buffers: %d max %d\n", req->nr_buffers, + NOUVEAU_GEM_MAX_BUFFERS); + NV_ERROR(dev, " relocs : %d max %d\n", req->nr_relocs, + NOUVEAU_GEM_MAX_RELOCS); + return -EINVAL; + } + + bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo)); + if (IS_ERR(bo)) + return PTR_ERR(bo); + + mutex_lock(&dev->struct_mutex); + + /* 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; + } + + /* Validate DMA push buffer */ + gem = drm_gem_object_lookup(dev, file_priv, req->handle); + if (!gem) { + NV_ERROR(dev, "Unknown pb handle 0x%08x\n", req->handle); + ret = -EINVAL; + goto out; + } + pbbo = nouveau_gem_object(gem); + + if ((req->offset & 3) || req->nr_dwords < 2 || + (unsigned long)req->offset > (unsigned long)pbbo->bo.mem.size || + (unsigned long)req->nr_dwords > + ((unsigned long)(pbbo->bo.mem.size - req->offset ) >> 2)) { + NV_ERROR(dev, "pb call misaligned or out of bounds: " + "%d + %d * 4 > %ld\n", + req->offset, req->nr_dwords, pbbo->bo.mem.size); + ret = -EINVAL; + drm_gem_object_unreference(gem); + goto out; + } + + ret = ttm_bo_reserve(&pbbo->bo, false, false, true, + chan->fence.sequence); + if (ret) { + NV_ERROR(dev, "resv pb: %d\n", ret); + drm_gem_object_unreference(gem); + goto out; + } + + nouveau_bo_placement_set(pbbo, 1 << chan->pushbuf_bo->bo.mem.mem_type); + ret = ttm_bo_validate(&pbbo->bo, &pbbo->placement, false, false); + if (ret) { + NV_ERROR(dev, "validate pb: %d\n", ret); + ttm_bo_unreserve(&pbbo->bo); + drm_gem_object_unreference(gem); + goto out; + } + + list_add_tail(&pbbo->entry, &op.both_list); + + /* If presumed return address doesn't match, we need to map the + * push buffer and fix it.. + */ + if (!PUSHBUF_CAL) { + uint32_t retaddy; + + if (chan->dma.free < 4 + NOUVEAU_DMA_SKIPS) { + ret = nouveau_dma_wait(chan, 4 + NOUVEAU_DMA_SKIPS); + if (ret) { + NV_ERROR(dev, "jmp_space: %d\n", ret); + goto out; + } + } + + retaddy = chan->pushbuf_base + ((chan->dma.cur + 2) << 2); + retaddy |= 0x20000000; + if (retaddy != req->suffix0) { + req->suffix0 = retaddy; + do_reloc = 1; + } + } + + /* Apply any relocations that are required */ + if (do_reloc) { + void *pbvirt; + bool is_iomem; + ret = ttm_bo_kmap(&pbbo->bo, 0, pbbo->bo.mem.num_pages, + &pbbo->kmap); + if (ret) { + NV_ERROR(dev, "kmap pb: %d\n", ret); + goto out; + } + + pbvirt = ttm_kmap_obj_virtual(&pbbo->kmap, &is_iomem); + ret = nouveau_gem_pushbuf_reloc_apply(chan, req->nr_buffers, bo, + req->nr_relocs, + req->relocs, + req->nr_dwords, + req->offset / 4, + pbvirt, is_iomem); + + if (!PUSHBUF_CAL) { + nouveau_bo_wr32(pbbo, + req->offset / 4 + req->nr_dwords - 2, + req->suffix0); + } + + ttm_bo_kunmap(&pbbo->kmap); + if (ret) { + NV_ERROR(dev, "reloc apply: %d\n", ret); + goto out; + } + } + + if (PUSHBUF_CAL) { + ret = RING_SPACE(chan, 2); + if (ret) { + NV_ERROR(dev, "cal_space: %d\n", ret); + goto out; + } + OUT_RING(chan, ((pbbo->bo.mem.mm_node->start << PAGE_SHIFT) + + req->offset) | 2); + OUT_RING(chan, 0); + } else { + ret = RING_SPACE(chan, 2 + NOUVEAU_DMA_SKIPS); + if (ret) { + NV_ERROR(dev, "jmp_space: %d\n", ret); + goto out; + } + OUT_RING(chan, ((pbbo->bo.mem.mm_node->start << PAGE_SHIFT) + + req->offset) | 0x20000000); + OUT_RING(chan, 0); + + /* Space the jumps apart with NOPs. */ + for (i = 0; i < NOUVEAU_DMA_SKIPS; i++) + 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); + mutex_unlock(&dev->struct_mutex); + kfree(bo); + +out_next: + if (PUSHBUF_CAL) { + req->suffix0 = 0x00020000; + req->suffix1 = 0x00000000; + } else { + req->suffix0 = 0x20000000 | + (chan->pushbuf_base + ((chan->dma.cur + 2) << 2)); + req->suffix1 = 0x00000000; + } + + return ret; +} + +int +nouveau_gem_ioctl_pushbuf_call2(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_call *req = data; + + req->vram_available = dev_priv->fb_aper_free; + req->gart_available = dev_priv->gart_info.aper_free; + + return nouveau_gem_ioctl_pushbuf_call(dev, data, file_priv); +} + +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_pin(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct drm_nouveau_gem_pin *req = data; + struct drm_gem_object *gem; + struct nouveau_bo *nvbo; + int ret = 0; + + NOUVEAU_CHECK_INITIALISED_WITH_RETURN; + + if (drm_core_check_feature(dev, DRIVER_MODESET)) { + NV_ERROR(dev, "pin only allowed without kernel modesetting\n"); + return -EINVAL; + } + + if (!DRM_SUSER(DRM_CURPROC)) + return -EPERM; + + gem = drm_gem_object_lookup(dev, file_priv, req->handle); + if (!gem) + return -EINVAL; + nvbo = nouveau_gem_object(gem); + + ret = nouveau_bo_pin(nvbo, domain_to_ttm(nvbo, req->domain)); + if (ret) + goto out; + + req->offset = nvbo->bo.offset; + if (nvbo->bo.mem.mem_type == TTM_PL_TT) + req->domain = NOUVEAU_GEM_DOMAIN_GART; + else + req->domain = NOUVEAU_GEM_DOMAIN_VRAM; + +out: + mutex_lock(&dev->struct_mutex); + drm_gem_object_unreference(gem); + mutex_unlock(&dev->struct_mutex); + + return ret; +} + +int +nouveau_gem_ioctl_unpin(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct drm_nouveau_gem_pin *req = data; + struct drm_gem_object *gem; + int ret; + + NOUVEAU_CHECK_INITIALISED_WITH_RETURN; + + if (drm_core_check_feature(dev, DRIVER_MODESET)) + return -EINVAL; + + gem = drm_gem_object_lookup(dev, file_priv, req->handle); + if (!gem) + return -EINVAL; + + ret = nouveau_bo_unpin(nouveau_gem_object(gem)); + + mutex_lock(&dev->struct_mutex); + drm_gem_object_unreference(gem); + mutex_unlock(&dev->struct_mutex); + + return 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); + int ret = -EINVAL; + + NOUVEAU_CHECK_INITIALISED_WITH_RETURN; + + gem = drm_gem_object_lookup(dev, file_priv, req->handle); + if (!gem) + return ret; + 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) { + ret = ttm_bo_wait(&nvbo->bo, false, false, no_wait); + } else { + ret = ttm_bo_synccpu_write_grab(&nvbo->bo, no_wait); + if (ret == 0) + nvbo->cpu_filp = file_priv; + } + +out: + mutex_lock(&dev->struct_mutex); + drm_gem_object_unreference(gem); + mutex_unlock(&dev->struct_mutex); + 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; + + NOUVEAU_CHECK_INITIALISED_WITH_RETURN; + + gem = drm_gem_object_lookup(dev, file_priv, req->handle); + if (!gem) + return ret; + 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: + mutex_lock(&dev->struct_mutex); + drm_gem_object_unreference(gem); + mutex_unlock(&dev->struct_mutex); + 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; + + NOUVEAU_CHECK_INITIALISED_WITH_RETURN; + + gem = drm_gem_object_lookup(dev, file_priv, req->handle); + if (!gem) + return -EINVAL; + + ret = nouveau_gem_info(gem, req); + mutex_lock(&dev->struct_mutex); + drm_gem_object_unreference(gem); + mutex_unlock(&dev->struct_mutex); + return ret; +} + |