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path: root/drivers/gpu/drm/nouveau/nouveau_gem.c
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Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_gem.c')
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_gem.c992
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..11f831f0ddc5
--- /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 nouveau_fence *fence;
+ 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, bool success)
+{
+ struct nouveau_fence *fence = op->fence;
+
+ if (unlikely(!success))
+ op->fence = NULL;
+
+ validate_fini_list(&op->vram_list, op->fence);
+ validate_fini_list(&op->gart_list, op->fence);
+ validate_fini_list(&op->both_list, op->fence);
+ nouveau_fence_unref((void *)&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);
+ 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 == -ERESTART)
+ ret = -EAGAIN;
+ 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);
+
+ ret = nouveau_fence_new(chan, &op->fence, false);
+ if (ret)
+ return ret;
+
+ 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,
+ int nr_relocs, uint64_t ptr_relocs,
+ int nr_dwords, int 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, 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;
+ 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_emit(op.fence);
+ 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(op.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, ret == 0);
+ 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;
+ 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);
+
+ 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_emit(op.fence);
+ if (ret) {
+ NV_ERROR(dev, "error fencing pushbuf: %d\n", ret);
+ WIND_RING(chan);
+ goto out;
+ }
+
+out:
+ validate_fini(&op, ret == 0);
+ 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 == -ERESTART)
+ ret = -EAGAIN;
+ 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 == -ERESTART)
+ ret = -EAGAIN;
+ else
+ 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;
+}
+