#include <drm/ttm/ttm_bo_api.h>
#include <drm/ttm/ttm_placement.h>
+#define VMW_RES_HT_ORDER 12
+
+/**
+ * struct vmw_resource_relocation - Relocation info for resources
+ *
+ * @head: List head for the software context's relocation list.
+ * @res: Non-ref-counted pointer to the resource.
+ * @offset: Offset of 4 byte entries into the command buffer where the
+ * id that needs fixup is located.
+ */
+struct vmw_resource_relocation {
+ struct list_head head;
+ const struct vmw_resource *res;
+ unsigned long offset;
+};
+
+/**
+ * struct vmw_resource_val_node - Validation info for resources
+ *
+ * @head: List head for the software context's resource list.
+ * @hash: Hash entry for quick resouce to val_node lookup.
+ * @res: Ref-counted pointer to the resource.
+ * @switch_backup: Boolean whether to switch backup buffer on unreserve.
+ * @new_backup: Refcounted pointer to the new backup buffer.
+ * @new_backup_offset: New backup buffer offset if @new_backup is non-NUll.
+ * @first_usage: Set to true the first time the resource is referenced in
+ * the command stream.
+ * @no_buffer_needed: Resources do not need to allocate buffer backup on
+ * reservation. The command stream will provide one.
+ */
+struct vmw_resource_val_node {
+ struct list_head head;
+ struct drm_hash_item hash;
+ struct vmw_resource *res;
+ struct vmw_dma_buffer *new_backup;
+ unsigned long new_backup_offset;
+ bool first_usage;
+ bool no_buffer_needed;
+};
+
+/**
+ * vmw_resource_unreserve - unreserve resources previously reserved for
+ * command submission.
+ *
+ * @list_head: list of resources to unreserve.
+ * @backoff: Whether command submission failed.
+ */
+static void vmw_resource_list_unreserve(struct list_head *list,
+ bool backoff)
+{
+ struct vmw_resource_val_node *val;
+
+ list_for_each_entry(val, list, head) {
+ struct vmw_resource *res = val->res;
+ struct vmw_dma_buffer *new_backup =
+ backoff ? NULL : val->new_backup;
+
+ vmw_resource_unreserve(res, new_backup,
+ val->new_backup_offset);
+ vmw_dmabuf_unreference(&val->new_backup);
+ }
+}
+
+
+/**
+ * vmw_resource_val_add - Add a resource to the software context's
+ * resource list if it's not already on it.
+ *
+ * @sw_context: Pointer to the software context.
+ * @res: Pointer to the resource.
+ * @p_node On successful return points to a valid pointer to a
+ * struct vmw_resource_val_node, if non-NULL on entry.
+ */
+static int vmw_resource_val_add(struct vmw_sw_context *sw_context,
+ struct vmw_resource *res,
+ struct vmw_resource_val_node **p_node)
+{
+ struct vmw_resource_val_node *node;
+ struct drm_hash_item *hash;
+ int ret;
+
+ if (likely(drm_ht_find_item(&sw_context->res_ht, (unsigned long) res,
+ &hash) == 0)) {
+ node = container_of(hash, struct vmw_resource_val_node, hash);
+ node->first_usage = false;
+ if (unlikely(p_node != NULL))
+ *p_node = node;
+ return 0;
+ }
+
+ node = kzalloc(sizeof(*node), GFP_KERNEL);
+ if (unlikely(node == NULL)) {
+ DRM_ERROR("Failed to allocate a resource validation "
+ "entry.\n");
+ return -ENOMEM;
+ }
+
+ node->hash.key = (unsigned long) res;
+ ret = drm_ht_insert_item(&sw_context->res_ht, &node->hash);
+ if (unlikely(ret != 0)) {
+ DRM_ERROR("Failed to initialize a resource validation "
+ "entry.\n");
+ kfree(node);
+ return ret;
+ }
+ list_add_tail(&node->head, &sw_context->resource_list);
+ node->res = vmw_resource_reference(res);
+ node->first_usage = true;
+
+ if (unlikely(p_node != NULL))
+ *p_node = node;
+
+ return 0;
+}
+
+/**
+ * vmw_resource_relocation_add - Add a relocation to the relocation list
+ *
+ * @list: Pointer to head of relocation list.
+ * @res: The resource.
+ * @offset: Offset into the command buffer currently being parsed where the
+ * id that needs fixup is located. Granularity is 4 bytes.
+ */
+static int vmw_resource_relocation_add(struct list_head *list,
+ const struct vmw_resource *res,
+ unsigned long offset)
+{
+ struct vmw_resource_relocation *rel;
+
+ rel = kmalloc(sizeof(*rel), GFP_KERNEL);
+ if (unlikely(rel == NULL)) {
+ DRM_ERROR("Failed to allocate a resource relocation.\n");
+ return -ENOMEM;
+ }
+
+ rel->res = res;
+ rel->offset = offset;
+ list_add_tail(&rel->head, list);
+
+ return 0;
+}
+
+/**
+ * vmw_resource_relocations_free - Free all relocations on a list
+ *
+ * @list: Pointer to the head of the relocation list.
+ */
+static void vmw_resource_relocations_free(struct list_head *list)
+{
+ struct vmw_resource_relocation *rel, *n;
+
+ list_for_each_entry_safe(rel, n, list, head) {
+ list_del(&rel->head);
+ kfree(rel);
+ }
+}
+
+/**
+ * vmw_resource_relocations_apply - Apply all relocations on a list
+ *
+ * @cb: Pointer to the start of the command buffer bein patch. This need
+ * not be the same buffer as the one being parsed when the relocation
+ * list was built, but the contents must be the same modulo the
+ * resource ids.
+ * @list: Pointer to the head of the relocation list.
+ */
+static void vmw_resource_relocations_apply(uint32_t *cb,
+ struct list_head *list)
+{
+ struct vmw_resource_relocation *rel;
+
+ list_for_each_entry(rel, list, head)
+ cb[rel->offset] = rel->res->id;
+}
+
static int vmw_cmd_invalid(struct vmw_private *dev_priv,
struct vmw_sw_context *sw_context,
SVGA3dCmdHeader *header)
return 0;
}
-static void vmw_resource_to_validate_list(struct vmw_sw_context *sw_context,
- struct vmw_resource **p_res)
-{
- struct vmw_resource *res = *p_res;
-
- if (list_empty(&res->validate_head)) {
- list_add_tail(&res->validate_head, &sw_context->resource_list);
- *p_res = NULL;
- } else
- vmw_resource_unreference(p_res);
-}
-
/**
* vmw_bo_to_validate_list - add a bo to a validate list
*
* @sw_context: The software context used for this command submission batch.
* @bo: The buffer object to add.
- * @fence_flags: Fence flags to be or'ed with any other fence flags for
- * this buffer on this submission batch.
* @p_val_node: If non-NULL Will be updated with the validate node number
* on return.
*
uint32_t *p_val_node)
{
uint32_t val_node;
+ struct vmw_validate_buffer *vval_buf;
struct ttm_validate_buffer *val_buf;
+ struct drm_hash_item *hash;
+ int ret;
- val_node = vmw_dmabuf_validate_node(bo, sw_context->cur_val_buf);
-
- if (unlikely(val_node >= VMWGFX_MAX_VALIDATIONS)) {
- DRM_ERROR("Max number of DMA buffers per submission"
- " exceeded.\n");
- return -EINVAL;
- }
-
- val_buf = &sw_context->val_bufs[val_node];
- if (unlikely(val_node == sw_context->cur_val_buf)) {
+ if (likely(drm_ht_find_item(&sw_context->res_ht, (unsigned long) bo,
+ &hash) == 0)) {
+ vval_buf = container_of(hash, struct vmw_validate_buffer,
+ hash);
+ val_buf = &vval_buf->base;
+ val_node = vval_buf - sw_context->val_bufs;
+ } else {
+ val_node = sw_context->cur_val_buf;
+ if (unlikely(val_node >= VMWGFX_MAX_VALIDATIONS)) {
+ DRM_ERROR("Max number of DMA buffers per submission "
+ "exceeded.\n");
+ return -EINVAL;
+ }
+ vval_buf = &sw_context->val_bufs[val_node];
+ vval_buf->hash.key = (unsigned long) bo;
+ ret = drm_ht_insert_item(&sw_context->res_ht, &vval_buf->hash);
+ if (unlikely(ret != 0)) {
+ DRM_ERROR("Failed to initialize a buffer validation "
+ "entry.\n");
+ return ret;
+ }
+ ++sw_context->cur_val_buf;
+ val_buf = &vval_buf->base;
val_buf->bo = ttm_bo_reference(bo);
+ val_buf->reserved = false;
list_add_tail(&val_buf->head, &sw_context->validate_nodes);
- ++sw_context->cur_val_buf;
}
sw_context->fence_flags |= DRM_VMW_FENCE_FLAG_EXEC;
return 0;
}
-static int vmw_cmd_cid_check(struct vmw_private *dev_priv,
- struct vmw_sw_context *sw_context,
- SVGA3dCmdHeader *header)
+/**
+ * vmw_resources_reserve - Reserve all resources on the sw_context's
+ * resource list.
+ *
+ * @sw_context: Pointer to the software context.
+ *
+ * Note that since vmware's command submission currently is protected by
+ * the cmdbuf mutex, no fancy deadlock avoidance is required for resources,
+ * since only a single thread at once will attempt this.
+ */
+static int vmw_resources_reserve(struct vmw_sw_context *sw_context)
{
- struct vmw_resource *ctx;
-
- struct vmw_cid_cmd {
- SVGA3dCmdHeader header;
- __le32 cid;
- } *cmd;
+ struct vmw_resource_val_node *val;
int ret;
- cmd = container_of(header, struct vmw_cid_cmd, header);
- if (likely(sw_context->cid_valid && cmd->cid == sw_context->last_cid))
- return 0;
+ list_for_each_entry(val, &sw_context->resource_list, head) {
+ struct vmw_resource *res = val->res;
- ret = vmw_context_check(dev_priv, sw_context->tfile, cmd->cid,
- &ctx);
- if (unlikely(ret != 0)) {
- DRM_ERROR("Could not find or use context %u\n",
- (unsigned) cmd->cid);
- return ret;
+ ret = vmw_resource_reserve(res, val->no_buffer_needed);
+ if (unlikely(ret != 0))
+ return ret;
+
+ if (res->backup) {
+ struct ttm_buffer_object *bo = &res->backup->base;
+
+ ret = vmw_bo_to_validate_list
+ (sw_context, bo, NULL);
+
+ if (unlikely(ret != 0))
+ return ret;
+ }
}
+ return 0;
+}
- sw_context->last_cid = cmd->cid;
- sw_context->cid_valid = true;
- sw_context->cur_ctx = ctx;
- vmw_resource_to_validate_list(sw_context, &ctx);
+/**
+ * vmw_resources_validate - Validate all resources on the sw_context's
+ * resource list.
+ *
+ * @sw_context: Pointer to the software context.
+ *
+ * Before this function is called, all resource backup buffers must have
+ * been validated.
+ */
+static int vmw_resources_validate(struct vmw_sw_context *sw_context)
+{
+ struct vmw_resource_val_node *val;
+ int ret;
+
+ list_for_each_entry(val, &sw_context->resource_list, head) {
+ struct vmw_resource *res = val->res;
+ ret = vmw_resource_validate(res);
+ if (unlikely(ret != 0)) {
+ if (ret != -ERESTARTSYS)
+ DRM_ERROR("Failed to validate resource.\n");
+ return ret;
+ }
+ }
return 0;
}
-static int vmw_cmd_sid_check(struct vmw_private *dev_priv,
+/**
+ * vmw_cmd_res_check - Check that a resource is present and if so, put it
+ * on the resource validate list unless it's already there.
+ *
+ * @dev_priv: Pointer to a device private structure.
+ * @sw_context: Pointer to the software context.
+ * @res_type: Resource type.
+ * @converter: User-space visisble type specific information.
+ * @id: Pointer to the location in the command buffer currently being
+ * parsed from where the user-space resource id handle is located.
+ */
+static int vmw_cmd_res_check(struct vmw_private *dev_priv,
struct vmw_sw_context *sw_context,
- uint32_t *sid)
+ enum vmw_res_type res_type,
+ const struct vmw_user_resource_conv *converter,
+ uint32_t *id,
+ struct vmw_resource_val_node **p_val)
{
- struct vmw_surface *srf;
- int ret;
+ struct vmw_res_cache_entry *rcache =
+ &sw_context->res_cache[res_type];
struct vmw_resource *res;
+ struct vmw_resource_val_node *node;
+ int ret;
- if (*sid == SVGA3D_INVALID_ID)
+ if (*id == SVGA3D_INVALID_ID)
return 0;
- if (likely((sw_context->sid_valid &&
- *sid == sw_context->last_sid))) {
- *sid = sw_context->sid_translation;
- return 0;
- }
+ /*
+ * Fastpath in case of repeated commands referencing the same
+ * resource
+ */
- ret = vmw_user_surface_lookup_handle(dev_priv,
- sw_context->tfile,
- *sid, &srf);
- if (unlikely(ret != 0)) {
- DRM_ERROR("Could ot find or use surface 0x%08x "
- "address 0x%08lx\n",
- (unsigned int) *sid,
- (unsigned long) sid);
- return ret;
+ if (likely(rcache->valid && *id == rcache->handle)) {
+ const struct vmw_resource *res = rcache->res;
+
+ rcache->node->first_usage = false;
+ if (p_val)
+ *p_val = rcache->node;
+
+ return vmw_resource_relocation_add
+ (&sw_context->res_relocations, res,
+ id - sw_context->buf_start);
}
- ret = vmw_surface_validate(dev_priv, srf);
+ ret = vmw_user_resource_lookup_handle(dev_priv,
+ sw_context->tfile,
+ *id,
+ converter,
+ &res);
if (unlikely(ret != 0)) {
- if (ret != -ERESTARTSYS)
- DRM_ERROR("Could not validate surface.\n");
- vmw_surface_unreference(&srf);
+ DRM_ERROR("Could not find or use resource 0x%08x.\n",
+ (unsigned) *id);
+ dump_stack();
return ret;
}
- sw_context->last_sid = *sid;
- sw_context->sid_valid = true;
- sw_context->sid_translation = srf->res.id;
- *sid = sw_context->sid_translation;
+ rcache->valid = true;
+ rcache->res = res;
+ rcache->handle = *id;
- res = &srf->res;
- vmw_resource_to_validate_list(sw_context, &res);
+ ret = vmw_resource_relocation_add(&sw_context->res_relocations,
+ res,
+ id - sw_context->buf_start);
+ if (unlikely(ret != 0))
+ goto out_no_reloc;
+
+ ret = vmw_resource_val_add(sw_context, res, &node);
+ if (unlikely(ret != 0))
+ goto out_no_reloc;
+ rcache->node = node;
+ if (p_val)
+ *p_val = node;
+ vmw_resource_unreference(&res);
return 0;
+
+out_no_reloc:
+ BUG_ON(sw_context->error_resource != NULL);
+ sw_context->error_resource = res;
+
+ return ret;
}
+/**
+ * vmw_cmd_cid_check - Check a command header for valid context information.
+ *
+ * @dev_priv: Pointer to a device private structure.
+ * @sw_context: Pointer to the software context.
+ * @header: A command header with an embedded user-space context handle.
+ *
+ * Convenience function: Call vmw_cmd_res_check with the user-space context
+ * handle embedded in @header.
+ */
+static int vmw_cmd_cid_check(struct vmw_private *dev_priv,
+ struct vmw_sw_context *sw_context,
+ SVGA3dCmdHeader *header)
+{
+ struct vmw_cid_cmd {
+ SVGA3dCmdHeader header;
+ __le32 cid;
+ } *cmd;
+
+ cmd = container_of(header, struct vmw_cid_cmd, header);
+ return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_context,
+ user_context_converter, &cmd->cid, NULL);
+}
static int vmw_cmd_set_render_target_check(struct vmw_private *dev_priv,
struct vmw_sw_context *sw_context,
return ret;
cmd = container_of(header, struct vmw_sid_cmd, header);
- ret = vmw_cmd_sid_check(dev_priv, sw_context, &cmd->body.target.sid);
+ ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
+ user_surface_converter,
+ &cmd->body.target.sid, NULL);
return ret;
}
int ret;
cmd = container_of(header, struct vmw_sid_cmd, header);
- ret = vmw_cmd_sid_check(dev_priv, sw_context, &cmd->body.src.sid);
+ ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
+ user_surface_converter,
+ &cmd->body.src.sid, NULL);
if (unlikely(ret != 0))
return ret;
- return vmw_cmd_sid_check(dev_priv, sw_context, &cmd->body.dest.sid);
+ return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
+ user_surface_converter,
+ &cmd->body.dest.sid, NULL);
}
static int vmw_cmd_stretch_blt_check(struct vmw_private *dev_priv,
int ret;
cmd = container_of(header, struct vmw_sid_cmd, header);
- ret = vmw_cmd_sid_check(dev_priv, sw_context, &cmd->body.src.sid);
+ ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
+ user_surface_converter,
+ &cmd->body.src.sid, NULL);
if (unlikely(ret != 0))
return ret;
- return vmw_cmd_sid_check(dev_priv, sw_context, &cmd->body.dest.sid);
+ return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
+ user_surface_converter,
+ &cmd->body.dest.sid, NULL);
}
static int vmw_cmd_blt_surf_screen_check(struct vmw_private *dev_priv,
return -EPERM;
}
- return vmw_cmd_sid_check(dev_priv, sw_context, &cmd->body.srcImage.sid);
+ return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
+ user_surface_converter,
+ &cmd->body.srcImage.sid, NULL);
}
static int vmw_cmd_present_check(struct vmw_private *dev_priv,
return -EPERM;
}
- return vmw_cmd_sid_check(dev_priv, sw_context, &cmd->body.sid);
+ return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
+ user_surface_converter, &cmd->body.sid,
+ NULL);
}
/**
* vmw_query_bo_switch_prepare - Prepare to switch pinned buffer for queries.
*
* @dev_priv: The device private structure.
- * @cid: The hardware context for the next query.
* @new_query_bo: The new buffer holding query results.
* @sw_context: The software context used for this command submission.
*
* query results, and if another buffer currently is pinned for query
* results. If so, the function prepares the state of @sw_context for
* switching pinned buffers after successful submission of the current
- * command batch. It also checks whether we're using a new query context.
- * In that case, it makes sure we emit a query barrier for the old
- * context before the current query buffer is fenced.
+ * command batch.
*/
static int vmw_query_bo_switch_prepare(struct vmw_private *dev_priv,
- uint32_t cid,
struct ttm_buffer_object *new_query_bo,
struct vmw_sw_context *sw_context)
{
+ struct vmw_res_cache_entry *ctx_entry =
+ &sw_context->res_cache[vmw_res_context];
int ret;
- bool add_cid = false;
- uint32_t cid_to_add;
+
+ BUG_ON(!ctx_entry->valid);
+ sw_context->last_query_ctx = ctx_entry->res;
if (unlikely(new_query_bo != sw_context->cur_query_bo)) {
}
if (unlikely(sw_context->cur_query_bo != NULL)) {
- BUG_ON(!sw_context->query_cid_valid);
- add_cid = true;
- cid_to_add = sw_context->cur_query_cid;
+ sw_context->needs_post_query_barrier = true;
ret = vmw_bo_to_validate_list(sw_context,
sw_context->cur_query_bo,
NULL);
}
- if (unlikely(cid != sw_context->cur_query_cid &&
- sw_context->query_cid_valid)) {
- add_cid = true;
- cid_to_add = sw_context->cur_query_cid;
- }
-
- sw_context->cur_query_cid = cid;
- sw_context->query_cid_valid = true;
-
- if (add_cid) {
- struct vmw_resource *ctx = sw_context->cur_ctx;
-
- if (list_empty(&ctx->query_head))
- list_add_tail(&ctx->query_head,
- &sw_context->query_list);
- ret = vmw_bo_to_validate_list(sw_context,
- dev_priv->dummy_query_bo,
- NULL);
- if (unlikely(ret != 0))
- return ret;
- }
return 0;
}
* @sw_context: The software context used for this command submission batch.
*
* This function will check if we're switching query buffers, and will then,
- * if no other query waits are issued this command submission batch,
* issue a dummy occlusion query wait used as a query barrier. When the fence
* object following that query wait has signaled, we are sure that all
- * preseding queries have finished, and the old query buffer can be unpinned.
+ * preceding queries have finished, and the old query buffer can be unpinned.
* However, since both the new query buffer and the old one are fenced with
* that fence, we can do an asynchronus unpin now, and be sure that the
* old query buffer won't be moved until the fence has signaled.
static void vmw_query_bo_switch_commit(struct vmw_private *dev_priv,
struct vmw_sw_context *sw_context)
{
-
- struct vmw_resource *ctx, *next_ctx;
- int ret;
-
/*
* The validate list should still hold references to all
* contexts here.
*/
- list_for_each_entry_safe(ctx, next_ctx, &sw_context->query_list,
- query_head) {
- list_del_init(&ctx->query_head);
+ if (sw_context->needs_post_query_barrier) {
+ struct vmw_res_cache_entry *ctx_entry =
+ &sw_context->res_cache[vmw_res_context];
+ struct vmw_resource *ctx;
+ int ret;
- BUG_ON(list_empty(&ctx->validate_head));
+ BUG_ON(!ctx_entry->valid);
+ ctx = ctx_entry->res;
ret = vmw_fifo_emit_dummy_query(dev_priv, ctx->id);
ttm_bo_unref(&dev_priv->pinned_bo);
}
- vmw_bo_pin(sw_context->cur_query_bo, true);
+ if (!sw_context->needs_post_query_barrier) {
+ vmw_bo_pin(sw_context->cur_query_bo, true);
- /*
- * We pin also the dummy_query_bo buffer so that we
- * don't need to validate it when emitting
- * dummy queries in context destroy paths.
- */
+ /*
+ * We pin also the dummy_query_bo buffer so that we
+ * don't need to validate it when emitting
+ * dummy queries in context destroy paths.
+ */
- vmw_bo_pin(dev_priv->dummy_query_bo, true);
- dev_priv->dummy_query_bo_pinned = true;
+ vmw_bo_pin(dev_priv->dummy_query_bo, true);
+ dev_priv->dummy_query_bo_pinned = true;
- dev_priv->query_cid = sw_context->cur_query_cid;
- dev_priv->pinned_bo =
- ttm_bo_reference(sw_context->cur_query_bo);
+ BUG_ON(sw_context->last_query_ctx == NULL);
+ dev_priv->query_cid = sw_context->last_query_ctx->id;
+ dev_priv->query_cid_valid = true;
+ dev_priv->pinned_bo =
+ ttm_bo_reference(sw_context->cur_query_bo);
+ }
}
}
/**
- * vmw_query_switch_backoff - clear query barrier list
- * @sw_context: The sw context used for this submission batch.
+ * vmw_translate_guest_pointer - Prepare to translate a user-space buffer
+ * handle to a valid SVGAGuestPtr
*
- * This function is used as part of an error path, where a previously
- * set up list of query barriers needs to be cleared.
+ * @dev_priv: Pointer to a device private structure.
+ * @sw_context: The software context used for this command batch validation.
+ * @ptr: Pointer to the user-space handle to be translated.
+ * @vmw_bo_p: Points to a location that, on successful return will carry
+ * a reference-counted pointer to the DMA buffer identified by the
+ * user-space handle in @id.
*
+ * This function saves information needed to translate a user-space buffer
+ * handle to a valid SVGAGuestPtr. The translation does not take place
+ * immediately, but during a call to vmw_apply_relocations().
+ * This function builds a relocation list and a list of buffers to validate.
+ * The former needs to be freed using either vmw_apply_relocations() or
+ * vmw_free_relocations(). The latter needs to be freed using
+ * vmw_clear_validations.
*/
-static void vmw_query_switch_backoff(struct vmw_sw_context *sw_context)
-{
- struct list_head *list, *next;
-
- list_for_each_safe(list, next, &sw_context->query_list) {
- list_del_init(list);
- }
-}
-
static int vmw_translate_guest_ptr(struct vmw_private *dev_priv,
struct vmw_sw_context *sw_context,
SVGAGuestPtr *ptr,
return ret;
}
+/**
+ * vmw_cmd_begin_query - validate a SVGA_3D_CMD_BEGIN_QUERY command.
+ *
+ * @dev_priv: Pointer to a device private struct.
+ * @sw_context: The software context used for this command submission.
+ * @header: Pointer to the command header in the command stream.
+ */
+static int vmw_cmd_begin_query(struct vmw_private *dev_priv,
+ struct vmw_sw_context *sw_context,
+ SVGA3dCmdHeader *header)
+{
+ struct vmw_begin_query_cmd {
+ SVGA3dCmdHeader header;
+ SVGA3dCmdBeginQuery q;
+ } *cmd;
+
+ cmd = container_of(header, struct vmw_begin_query_cmd,
+ header);
+
+ return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_context,
+ user_context_converter, &cmd->q.cid,
+ NULL);
+}
+
+/**
+ * vmw_cmd_end_query - validate a SVGA_3D_CMD_END_QUERY command.
+ *
+ * @dev_priv: Pointer to a device private struct.
+ * @sw_context: The software context used for this command submission.
+ * @header: Pointer to the command header in the command stream.
+ */
static int vmw_cmd_end_query(struct vmw_private *dev_priv,
struct vmw_sw_context *sw_context,
SVGA3dCmdHeader *header)
if (unlikely(ret != 0))
return ret;
- ret = vmw_query_bo_switch_prepare(dev_priv, cmd->q.cid,
- &vmw_bo->base, sw_context);
+ ret = vmw_query_bo_switch_prepare(dev_priv, &vmw_bo->base, sw_context);
vmw_dmabuf_unreference(&vmw_bo);
return ret;
}
+/*
+ * vmw_cmd_wait_query - validate a SVGA_3D_CMD_WAIT_QUERY command.
+ *
+ * @dev_priv: Pointer to a device private struct.
+ * @sw_context: The software context used for this command submission.
+ * @header: Pointer to the command header in the command stream.
+ */
static int vmw_cmd_wait_query(struct vmw_private *dev_priv,
struct vmw_sw_context *sw_context,
SVGA3dCmdHeader *header)
SVGA3dCmdWaitForQuery q;
} *cmd;
int ret;
- struct vmw_resource *ctx;
cmd = container_of(header, struct vmw_query_cmd, header);
ret = vmw_cmd_cid_check(dev_priv, sw_context, header);
return ret;
vmw_dmabuf_unreference(&vmw_bo);
-
- /*
- * This wait will act as a barrier for previous waits for this
- * context.
- */
-
- ctx = sw_context->cur_ctx;
- if (!list_empty(&ctx->query_head))
- list_del_init(&ctx->query_head);
-
return 0;
}
SVGA3dCmdHeader *header)
{
struct vmw_dma_buffer *vmw_bo = NULL;
- struct ttm_buffer_object *bo;
struct vmw_surface *srf = NULL;
struct vmw_dma_cmd {
SVGA3dCmdHeader header;
SVGA3dCmdSurfaceDMA dma;
} *cmd;
int ret;
- struct vmw_resource *res;
cmd = container_of(header, struct vmw_dma_cmd, header);
ret = vmw_translate_guest_ptr(dev_priv, sw_context,
if (unlikely(ret != 0))
return ret;
- bo = &vmw_bo->base;
- ret = vmw_user_surface_lookup_handle(dev_priv, sw_context->tfile,
- cmd->dma.host.sid, &srf);
- if (ret) {
- DRM_ERROR("could not find surface\n");
- goto out_no_reloc;
- }
-
- ret = vmw_surface_validate(dev_priv, srf);
+ ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
+ user_surface_converter, &cmd->dma.host.sid,
+ NULL);
if (unlikely(ret != 0)) {
- if (ret != -ERESTARTSYS)
- DRM_ERROR("Culd not validate surface.\n");
- goto out_no_validate;
+ if (unlikely(ret != -ERESTARTSYS))
+ DRM_ERROR("could not find surface for DMA.\n");
+ goto out_no_surface;
}
- /*
- * Patch command stream with device SID.
- */
- cmd->dma.host.sid = srf->res.id;
- vmw_kms_cursor_snoop(srf, sw_context->tfile, bo, header);
-
- vmw_dmabuf_unreference(&vmw_bo);
-
- res = &srf->res;
- vmw_resource_to_validate_list(sw_context, &res);
+ srf = vmw_res_to_srf(sw_context->res_cache[vmw_res_surface].res);
- return 0;
+ vmw_kms_cursor_snoop(srf, sw_context->tfile, &vmw_bo->base, header);
-out_no_validate:
- vmw_surface_unreference(&srf);
-out_no_reloc:
+out_no_surface:
vmw_dmabuf_unreference(&vmw_bo);
return ret;
}
}
for (i = 0; i < cmd->body.numVertexDecls; ++i, ++decl) {
- ret = vmw_cmd_sid_check(dev_priv, sw_context,
- &decl->array.surfaceId);
+ ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
+ user_surface_converter,
+ &decl->array.surfaceId, NULL);
if (unlikely(ret != 0))
return ret;
}
range = (SVGA3dPrimitiveRange *) decl;
for (i = 0; i < cmd->body.numRanges; ++i, ++range) {
- ret = vmw_cmd_sid_check(dev_priv, sw_context,
- &range->indexArray.surfaceId);
+ ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
+ user_surface_converter,
+ &range->indexArray.surfaceId, NULL);
if (unlikely(ret != 0))
return ret;
}
if (likely(cur_state->name != SVGA3D_TS_BIND_TEXTURE))
continue;
- ret = vmw_cmd_sid_check(dev_priv, sw_context,
- &cur_state->value);
+ ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
+ user_surface_converter,
+ &cur_state->value, NULL);
if (unlikely(ret != 0))
return ret;
}
return ret;
}
+/**
+ * vmw_cmd_set_shader - Validate an SVGA_3D_CMD_SET_SHADER
+ * command
+ *
+ * @dev_priv: Pointer to a device private struct.
+ * @sw_context: The software context being used for this batch.
+ * @header: Pointer to the command header in the command stream.
+ */
+static int vmw_cmd_set_shader(struct vmw_private *dev_priv,
+ struct vmw_sw_context *sw_context,
+ SVGA3dCmdHeader *header)
+{
+ struct vmw_set_shader_cmd {
+ SVGA3dCmdHeader header;
+ SVGA3dCmdSetShader body;
+ } *cmd;
+ int ret;
+
+ cmd = container_of(header, struct vmw_set_shader_cmd,
+ header);
+
+ ret = vmw_cmd_cid_check(dev_priv, sw_context, header);
+ if (unlikely(ret != 0))
+ return ret;
+
+ return 0;
+}
+
static int vmw_cmd_check_not_3d(struct vmw_private *dev_priv,
struct vmw_sw_context *sw_context,
void *buf, uint32_t *size)
VMW_CMD_DEF(SVGA_3D_CMD_PRESENT, &vmw_cmd_present_check),
VMW_CMD_DEF(SVGA_3D_CMD_SHADER_DEFINE, &vmw_cmd_cid_check),
VMW_CMD_DEF(SVGA_3D_CMD_SHADER_DESTROY, &vmw_cmd_cid_check),
- VMW_CMD_DEF(SVGA_3D_CMD_SET_SHADER, &vmw_cmd_cid_check),
+ VMW_CMD_DEF(SVGA_3D_CMD_SET_SHADER, &vmw_cmd_set_shader),
VMW_CMD_DEF(SVGA_3D_CMD_SET_SHADER_CONST, &vmw_cmd_cid_check),
VMW_CMD_DEF(SVGA_3D_CMD_DRAW_PRIMITIVES, &vmw_cmd_draw),
VMW_CMD_DEF(SVGA_3D_CMD_SETSCISSORRECT, &vmw_cmd_cid_check),
- VMW_CMD_DEF(SVGA_3D_CMD_BEGIN_QUERY, &vmw_cmd_cid_check),
+ VMW_CMD_DEF(SVGA_3D_CMD_BEGIN_QUERY, &vmw_cmd_begin_query),
VMW_CMD_DEF(SVGA_3D_CMD_END_QUERY, &vmw_cmd_end_query),
VMW_CMD_DEF(SVGA_3D_CMD_WAIT_FOR_QUERY, &vmw_cmd_wait_query),
VMW_CMD_DEF(SVGA_3D_CMD_PRESENT_READBACK, &vmw_cmd_ok),
VMW_CMD_DEF(SVGA_3D_CMD_BLIT_SURFACE_TO_SCREEN,
- &vmw_cmd_blt_surf_screen_check)
+ &vmw_cmd_blt_surf_screen_check),
+ VMW_CMD_DEF(SVGA_3D_CMD_SURFACE_DEFINE_V2, &vmw_cmd_invalid),
+ VMW_CMD_DEF(SVGA_3D_CMD_GENERATE_MIPMAPS, &vmw_cmd_invalid),
+ VMW_CMD_DEF(SVGA_3D_CMD_ACTIVATE_SURFACE, &vmw_cmd_invalid),
+ VMW_CMD_DEF(SVGA_3D_CMD_DEACTIVATE_SURFACE, &vmw_cmd_invalid),
};
static int vmw_cmd_check(struct vmw_private *dev_priv,
int32_t cur_size = size;
int ret;
+ sw_context->buf_start = buf;
+
while (cur_size > 0) {
size = cur_size;
ret = vmw_cmd_check(dev_priv, sw_context, buf, &size);
for (i = 0; i < sw_context->cur_reloc; ++i) {
reloc = &sw_context->relocs[i];
- validate = &sw_context->val_bufs[reloc->index];
+ validate = &sw_context->val_bufs[reloc->index].base;
bo = validate->bo;
- if (bo->mem.mem_type == TTM_PL_VRAM) {
+ switch (bo->mem.mem_type) {
+ case TTM_PL_VRAM:
reloc->location->offset += bo->offset;
reloc->location->gmrId = SVGA_GMR_FRAMEBUFFER;
- } else
+ break;
+ case VMW_PL_GMR:
reloc->location->gmrId = bo->mem.start;
+ break;
+ default:
+ BUG();
+ }
}
vmw_free_relocations(sw_context);
}
+/**
+ * vmw_resource_list_unrefererence - Free up a resource list and unreference
+ * all resources referenced by it.
+ *
+ * @list: The resource list.
+ */
+static void vmw_resource_list_unreference(struct list_head *list)
+{
+ struct vmw_resource_val_node *val, *val_next;
+
+ /*
+ * Drop references to resources held during command submission.
+ */
+
+ list_for_each_entry_safe(val, val_next, list, head) {
+ list_del_init(&val->head);
+ vmw_resource_unreference(&val->res);
+ kfree(val);
+ }
+}
+
static void vmw_clear_validations(struct vmw_sw_context *sw_context)
{
- struct ttm_validate_buffer *entry, *next;
- struct vmw_resource *res, *res_next;
+ struct vmw_validate_buffer *entry, *next;
+ struct vmw_resource_val_node *val;
/*
* Drop references to DMA buffers held during command submission.
*/
list_for_each_entry_safe(entry, next, &sw_context->validate_nodes,
- head) {
- list_del(&entry->head);
- vmw_dmabuf_validate_clear(entry->bo);
- ttm_bo_unref(&entry->bo);
+ base.head) {
+ list_del(&entry->base.head);
+ ttm_bo_unref(&entry->base.bo);
+ (void) drm_ht_remove_item(&sw_context->res_ht, &entry->hash);
sw_context->cur_val_buf--;
}
BUG_ON(sw_context->cur_val_buf != 0);
- /*
- * Drop references to resources held during command submission.
- */
- vmw_resource_unreserve(&sw_context->resource_list);
- list_for_each_entry_safe(res, res_next, &sw_context->resource_list,
- validate_head) {
- list_del_init(&res->validate_head);
- vmw_resource_unreference(&res);
- }
+ list_for_each_entry(val, &sw_context->resource_list, head)
+ (void) drm_ht_remove_item(&sw_context->res_ht, &val->hash);
}
static int vmw_validate_single_buffer(struct vmw_private *dev_priv,
static int vmw_validate_buffers(struct vmw_private *dev_priv,
struct vmw_sw_context *sw_context)
{
- struct ttm_validate_buffer *entry;
+ struct vmw_validate_buffer *entry;
int ret;
- list_for_each_entry(entry, &sw_context->validate_nodes, head) {
- ret = vmw_validate_single_buffer(dev_priv, entry->bo);
+ list_for_each_entry(entry, &sw_context->validate_nodes, base.head) {
+ ret = vmw_validate_single_buffer(dev_priv, entry->base.bo);
if (unlikely(ret != 0))
return ret;
}
{
struct vmw_sw_context *sw_context = &dev_priv->ctx;
struct vmw_fence_obj *fence = NULL;
+ struct vmw_resource *error_resource;
+ struct list_head resource_list;
uint32_t handle;
void *cmd;
int ret;
sw_context->kernel = true;
sw_context->tfile = vmw_fpriv(file_priv)->tfile;
- sw_context->cid_valid = false;
- sw_context->sid_valid = false;
sw_context->cur_reloc = 0;
sw_context->cur_val_buf = 0;
sw_context->fence_flags = 0;
- INIT_LIST_HEAD(&sw_context->query_list);
INIT_LIST_HEAD(&sw_context->resource_list);
sw_context->cur_query_bo = dev_priv->pinned_bo;
- sw_context->cur_query_cid = dev_priv->query_cid;
- sw_context->query_cid_valid = (dev_priv->pinned_bo != NULL);
-
+ sw_context->last_query_ctx = NULL;
+ sw_context->needs_post_query_barrier = false;
+ memset(sw_context->res_cache, 0, sizeof(sw_context->res_cache));
INIT_LIST_HEAD(&sw_context->validate_nodes);
+ INIT_LIST_HEAD(&sw_context->res_relocations);
+ if (!sw_context->res_ht_initialized) {
+ ret = drm_ht_create(&sw_context->res_ht, VMW_RES_HT_ORDER);
+ if (unlikely(ret != 0))
+ goto out_unlock;
+ sw_context->res_ht_initialized = true;
+ }
+ INIT_LIST_HEAD(&resource_list);
ret = vmw_cmd_check_all(dev_priv, sw_context, kernel_commands,
command_size);
if (unlikely(ret != 0))
goto out_err;
+ ret = vmw_resources_reserve(sw_context);
+ if (unlikely(ret != 0))
+ goto out_err;
+
ret = ttm_eu_reserve_buffers(&sw_context->validate_nodes);
if (unlikely(ret != 0))
goto out_err;
if (unlikely(ret != 0))
goto out_err;
- vmw_apply_relocations(sw_context);
+ ret = vmw_resources_validate(sw_context);
+ if (unlikely(ret != 0))
+ goto out_err;
if (throttle_us) {
ret = vmw_wait_lag(dev_priv, &dev_priv->fifo.marker_queue,
throttle_us);
if (unlikely(ret != 0))
- goto out_throttle;
+ goto out_err;
}
cmd = vmw_fifo_reserve(dev_priv, command_size);
if (unlikely(cmd == NULL)) {
DRM_ERROR("Failed reserving fifo space for commands.\n");
ret = -ENOMEM;
- goto out_throttle;
+ goto out_err;
}
+ vmw_apply_relocations(sw_context);
memcpy(cmd, kernel_commands, command_size);
+
+ vmw_resource_relocations_apply(cmd, &sw_context->res_relocations);
+ vmw_resource_relocations_free(&sw_context->res_relocations);
+
vmw_fifo_commit(dev_priv, command_size);
vmw_query_bo_switch_commit(dev_priv, sw_context);
if (ret != 0)
DRM_ERROR("Fence submission error. Syncing.\n");
+ vmw_resource_list_unreserve(&sw_context->resource_list, false);
ttm_eu_fence_buffer_objects(&sw_context->validate_nodes,
(void *) fence);
+ if (unlikely(dev_priv->pinned_bo != NULL &&
+ !dev_priv->query_cid_valid))
+ __vmw_execbuf_release_pinned_bo(dev_priv, fence);
+
vmw_clear_validations(sw_context);
vmw_execbuf_copy_fence_user(dev_priv, vmw_fpriv(file_priv), ret,
user_fence_rep, fence, handle);
vmw_fence_obj_unreference(&fence);
}
+ list_splice_init(&sw_context->resource_list, &resource_list);
mutex_unlock(&dev_priv->cmdbuf_mutex);
+
+ /*
+ * Unreference resources outside of the cmdbuf_mutex to
+ * avoid deadlocks in resource destruction paths.
+ */
+ vmw_resource_list_unreference(&resource_list);
+
return 0;
out_err:
+ vmw_resource_relocations_free(&sw_context->res_relocations);
vmw_free_relocations(sw_context);
-out_throttle:
- vmw_query_switch_backoff(sw_context);
ttm_eu_backoff_reservation(&sw_context->validate_nodes);
+ vmw_resource_list_unreserve(&sw_context->resource_list, true);
vmw_clear_validations(sw_context);
+ if (unlikely(dev_priv->pinned_bo != NULL &&
+ !dev_priv->query_cid_valid))
+ __vmw_execbuf_release_pinned_bo(dev_priv, NULL);
out_unlock:
+ list_splice_init(&sw_context->resource_list, &resource_list);
+ error_resource = sw_context->error_resource;
+ sw_context->error_resource = NULL;
mutex_unlock(&dev_priv->cmdbuf_mutex);
+
+ /*
+ * Unreference resources outside of the cmdbuf_mutex to
+ * avoid deadlocks in resource destruction paths.
+ */
+ vmw_resource_list_unreference(&resource_list);
+ if (unlikely(error_resource != NULL))
+ vmw_resource_unreference(&error_resource);
+
return ret;
}
/**
- * vmw_execbuf_release_pinned_bo - Flush queries and unpin the pinned
+ * __vmw_execbuf_release_pinned_bo - Flush queries and unpin the pinned
* query bo.
*
* @dev_priv: The device private structure.
- * @only_on_cid_match: Only flush and unpin if the current active query cid
- * matches @cid.
- * @cid: Optional context id to match.
+ * @fence: If non-NULL should point to a struct vmw_fence_obj issued
+ * _after_ a query barrier that flushes all queries touching the current
+ * buffer pointed to by @dev_priv->pinned_bo
*
* This function should be used to unpin the pinned query bo, or
* as a query barrier when we need to make sure that all queries have
*
* The function will synchronize on the previous query barrier, and will
* thus not finish until that barrier has executed.
+ *
+ * the @dev_priv->cmdbuf_mutex needs to be held by the current thread
+ * before calling this function.
*/
-void vmw_execbuf_release_pinned_bo(struct vmw_private *dev_priv,
- bool only_on_cid_match, uint32_t cid)
+void __vmw_execbuf_release_pinned_bo(struct vmw_private *dev_priv,
+ struct vmw_fence_obj *fence)
{
int ret = 0;
struct list_head validate_list;
struct ttm_validate_buffer pinned_val, query_val;
- struct vmw_fence_obj *fence;
-
- mutex_lock(&dev_priv->cmdbuf_mutex);
+ struct vmw_fence_obj *lfence = NULL;
if (dev_priv->pinned_bo == NULL)
goto out_unlock;
- if (only_on_cid_match && cid != dev_priv->query_cid)
- goto out_unlock;
-
INIT_LIST_HEAD(&validate_list);
pinned_val.bo = ttm_bo_reference(dev_priv->pinned_bo);
goto out_no_reserve;
}
- ret = vmw_fifo_emit_dummy_query(dev_priv, dev_priv->query_cid);
- if (unlikely(ret != 0)) {
- vmw_execbuf_unpin_panic(dev_priv);
- goto out_no_emit;
+ if (dev_priv->query_cid_valid) {
+ BUG_ON(fence != NULL);
+ ret = vmw_fifo_emit_dummy_query(dev_priv, dev_priv->query_cid);
+ if (unlikely(ret != 0)) {
+ vmw_execbuf_unpin_panic(dev_priv);
+ goto out_no_emit;
+ }
+ dev_priv->query_cid_valid = false;
}
vmw_bo_pin(dev_priv->pinned_bo, false);
vmw_bo_pin(dev_priv->dummy_query_bo, false);
dev_priv->dummy_query_bo_pinned = false;
- (void) vmw_execbuf_fence_commands(NULL, dev_priv, &fence, NULL);
+ if (fence == NULL) {
+ (void) vmw_execbuf_fence_commands(NULL, dev_priv, &lfence,
+ NULL);
+ fence = lfence;
+ }
ttm_eu_fence_buffer_objects(&validate_list, (void *) fence);
+ if (lfence != NULL)
+ vmw_fence_obj_unreference(&lfence);
ttm_bo_unref(&query_val.bo);
ttm_bo_unref(&pinned_val.bo);
ttm_bo_unref(&dev_priv->pinned_bo);
out_unlock:
- mutex_unlock(&dev_priv->cmdbuf_mutex);
return;
out_no_emit:
ttm_bo_unref(&query_val.bo);
ttm_bo_unref(&pinned_val.bo);
ttm_bo_unref(&dev_priv->pinned_bo);
+}
+
+/**
+ * vmw_execbuf_release_pinned_bo - Flush queries and unpin the pinned
+ * query bo.
+ *
+ * @dev_priv: The device private structure.
+ *
+ * This function should be used to unpin the pinned query bo, or
+ * as a query barrier when we need to make sure that all queries have
+ * finished before the next fifo command. (For example on hardware
+ * context destructions where the hardware may otherwise leak unfinished
+ * queries).
+ *
+ * This function does not return any failure codes, but make attempts
+ * to do safe unpinning in case of errors.
+ *
+ * The function will synchronize on the previous query barrier, and will
+ * thus not finish until that barrier has executed.
+ */
+void vmw_execbuf_release_pinned_bo(struct vmw_private *dev_priv)
+{
+ mutex_lock(&dev_priv->cmdbuf_mutex);
+ if (dev_priv->query_cid_valid)
+ __vmw_execbuf_release_pinned_bo(dev_priv, NULL);
mutex_unlock(&dev_priv->cmdbuf_mutex);
}
#include <drm/ttm/ttm_placement.h>
#include <drm/drmP.h>
-struct vmw_user_context {
- struct ttm_base_object base;
- struct vmw_resource res;
+/**
+ * struct vmw_user_resource_conv - Identify a derived user-exported resource
+ * type and provide a function to convert its ttm_base_object pointer to
+ * a struct vmw_resource
+ */
+struct vmw_user_resource_conv {
+ enum ttm_object_type object_type;
+ struct vmw_resource *(*base_obj_to_res)(struct ttm_base_object *base);
+ void (*res_free) (struct vmw_resource *res);
};
-struct vmw_user_surface {
- struct ttm_base_object base;
- struct vmw_surface srf;
- uint32_t size;
+/**
+ * struct vmw_res_func - members and functions common for a resource type
+ *
+ * @res_type: Enum that identifies the lru list to use for eviction.
+ * @needs_backup: Whether the resource is guest-backed and needs
+ * persistent buffer storage.
+ * @type_name: String that identifies the resource type.
+ * @backup_placement: TTM placement for backup buffers.
+ * @may_evict Whether the resource may be evicted.
+ * @create: Create a hardware resource.
+ * @destroy: Destroy a hardware resource.
+ * @bind: Bind a hardware resource to persistent buffer storage.
+ * @unbind: Unbind a hardware resource from persistent
+ * buffer storage.
+ */
+
+struct vmw_res_func {
+ enum vmw_res_type res_type;
+ bool needs_backup;
+ const char *type_name;
+ struct ttm_placement *backup_placement;
+ bool may_evict;
+
+ int (*create) (struct vmw_resource *res);
+ int (*destroy) (struct vmw_resource *res);
+ int (*bind) (struct vmw_resource *res,
+ struct ttm_validate_buffer *val_buf);
+ int (*unbind) (struct vmw_resource *res,
+ bool readback,
+ struct ttm_validate_buffer *val_buf);
};
struct vmw_user_dma_buffer {
struct vmw_stream stream;
};
+
+static uint64_t vmw_user_stream_size;
+
+static const struct vmw_res_func vmw_stream_func = {
+ .res_type = vmw_res_stream,
+ .needs_backup = false,
+ .may_evict = false,
+ .type_name = "video streams",
+ .backup_placement = NULL,
+ .create = NULL,
+ .destroy = NULL,
+ .bind = NULL,
+ .unbind = NULL
+};
+
+struct vmw_user_context {
+ struct ttm_base_object base;
+ struct vmw_resource res;
+};
+
+static void vmw_user_context_free(struct vmw_resource *res);
+static struct vmw_resource *
+vmw_user_context_base_to_res(struct ttm_base_object *base);
+
+static uint64_t vmw_user_context_size;
+
+static const struct vmw_user_resource_conv user_context_conv = {
+ .object_type = VMW_RES_CONTEXT,
+ .base_obj_to_res = vmw_user_context_base_to_res,
+ .res_free = vmw_user_context_free
+};
+
+const struct vmw_user_resource_conv *user_context_converter =
+ &user_context_conv;
+
+
+static const struct vmw_res_func vmw_legacy_context_func = {
+ .res_type = vmw_res_context,
+ .needs_backup = false,
+ .may_evict = false,
+ .type_name = "legacy contexts",
+ .backup_placement = NULL,
+ .create = NULL,
+ .destroy = NULL,
+ .bind = NULL,
+ .unbind = NULL
+};
+
+
+/**
+ * struct vmw_user_surface - User-space visible surface resource
+ *
+ * @base: The TTM base object handling user-space visibility.
+ * @srf: The surface metadata.
+ * @size: TTM accounting size for the surface.
+ */
+struct vmw_user_surface {
+ struct ttm_base_object base;
+ struct vmw_surface srf;
+ uint32_t size;
+ uint32_t backup_handle;
+};
+
+/**
+ * struct vmw_surface_offset - Backing store mip level offset info
+ *
+ * @face: Surface face.
+ * @mip: Mip level.
+ * @bo_offset: Offset into backing store of this mip level.
+ *
+ */
struct vmw_surface_offset {
uint32_t face;
uint32_t mip;
uint32_t bo_offset;
};
+static void vmw_user_surface_free(struct vmw_resource *res);
+static struct vmw_resource *
+vmw_user_surface_base_to_res(struct ttm_base_object *base);
+static int vmw_legacy_srf_bind(struct vmw_resource *res,
+ struct ttm_validate_buffer *val_buf);
+static int vmw_legacy_srf_unbind(struct vmw_resource *res,
+ bool readback,
+ struct ttm_validate_buffer *val_buf);
+static int vmw_legacy_srf_create(struct vmw_resource *res);
+static int vmw_legacy_srf_destroy(struct vmw_resource *res);
+
+static const struct vmw_user_resource_conv user_surface_conv = {
+ .object_type = VMW_RES_SURFACE,
+ .base_obj_to_res = vmw_user_surface_base_to_res,
+ .res_free = vmw_user_surface_free
+};
+
+const struct vmw_user_resource_conv *user_surface_converter =
+ &user_surface_conv;
+
-static uint64_t vmw_user_context_size;
static uint64_t vmw_user_surface_size;
-static uint64_t vmw_user_stream_size;
+
+static const struct vmw_res_func vmw_legacy_surface_func = {
+ .res_type = vmw_res_surface,
+ .needs_backup = false,
+ .may_evict = true,
+ .type_name = "legacy surfaces",
+ .backup_placement = &vmw_srf_placement,
+ .create = &vmw_legacy_srf_create,
+ .destroy = &vmw_legacy_srf_destroy,
+ .bind = &vmw_legacy_srf_bind,
+ .unbind = &vmw_legacy_srf_unbind
+};
+
static inline struct vmw_dma_buffer *
vmw_dma_buffer(struct ttm_buffer_object *bo)
static void vmw_resource_release_id(struct vmw_resource *res)
{
struct vmw_private *dev_priv = res->dev_priv;
+ struct idr *idr = &dev_priv->res_idr[res->func->res_type];
write_lock(&dev_priv->resource_lock);
if (res->id != -1)
- idr_remove(res->idr, res->id);
+ idr_remove(idr, res->id);
res->id = -1;
write_unlock(&dev_priv->resource_lock);
}
struct vmw_resource *res =
container_of(kref, struct vmw_resource, kref);
struct vmw_private *dev_priv = res->dev_priv;
- int id = res->id;
- struct idr *idr = res->idr;
+ int id;
+ struct idr *idr = &dev_priv->res_idr[res->func->res_type];
res->avail = false;
- if (res->remove_from_lists != NULL)
- res->remove_from_lists(res);
+ list_del_init(&res->lru_head);
write_unlock(&dev_priv->resource_lock);
+ if (res->backup) {
+ struct ttm_buffer_object *bo = &res->backup->base;
+
+ ttm_bo_reserve(bo, false, false, false, 0);
+ if (!list_empty(&res->mob_head) &&
+ res->func->unbind != NULL) {
+ struct ttm_validate_buffer val_buf;
+
+ val_buf.bo = bo;
+ res->func->unbind(res, false, &val_buf);
+ }
+ res->backup_dirty = false;
+ list_del_init(&res->mob_head);
+ ttm_bo_unreserve(bo);
+ vmw_dmabuf_unreference(&res->backup);
+ }
if (likely(res->hw_destroy != NULL))
res->hw_destroy(res);
+ id = res->id;
if (res->res_free != NULL)
res->res_free(res);
else
/**
* vmw_resource_alloc_id - release a resource id to the id manager.
*
- * @dev_priv: Pointer to the device private structure.
* @res: Pointer to the resource.
*
* Allocate the lowest free resource from the resource manager, and set
* @res->id to that id. Returns 0 on success and -ENOMEM on failure.
*/
-static int vmw_resource_alloc_id(struct vmw_private *dev_priv,
- struct vmw_resource *res)
+static int vmw_resource_alloc_id(struct vmw_resource *res)
{
+ struct vmw_private *dev_priv = res->dev_priv;
int ret;
+ struct idr *idr = &dev_priv->res_idr[res->func->res_type];
BUG_ON(res->id != -1);
do {
- if (unlikely(idr_pre_get(res->idr, GFP_KERNEL) == 0))
+ if (unlikely(idr_pre_get(idr, GFP_KERNEL) == 0))
return -ENOMEM;
write_lock(&dev_priv->resource_lock);
- ret = idr_get_new_above(res->idr, res, 1, &res->id);
+ ret = idr_get_new_above(idr, res, 1, &res->id);
write_unlock(&dev_priv->resource_lock);
} while (ret == -EAGAIN);
return ret;
}
-
+/**
+ * vmw_resource_init - initialize a struct vmw_resource
+ *
+ * @dev_priv: Pointer to a device private struct.
+ * @res: The struct vmw_resource to initialize.
+ * @obj_type: Resource object type.
+ * @delay_id: Boolean whether to defer device id allocation until
+ * the first validation.
+ * @res_free: Resource destructor.
+ * @func: Resource function table.
+ */
static int vmw_resource_init(struct vmw_private *dev_priv,
struct vmw_resource *res,
- struct idr *idr,
- enum ttm_object_type obj_type,
bool delay_id,
void (*res_free) (struct vmw_resource *res),
- void (*remove_from_lists)
- (struct vmw_resource *res))
+ const struct vmw_res_func *func)
{
kref_init(&res->kref);
res->hw_destroy = NULL;
res->res_free = res_free;
- res->remove_from_lists = remove_from_lists;
- res->res_type = obj_type;
- res->idr = idr;
res->avail = false;
res->dev_priv = dev_priv;
- INIT_LIST_HEAD(&res->query_head);
- INIT_LIST_HEAD(&res->validate_head);
+ res->func = func;
+ INIT_LIST_HEAD(&res->lru_head);
+ INIT_LIST_HEAD(&res->mob_head);
res->id = -1;
+ res->backup = NULL;
+ res->backup_offset = 0;
+ res->backup_dirty = false;
+ res->res_dirty = false;
if (delay_id)
return 0;
else
- return vmw_resource_alloc_id(dev_priv, res);
+ return vmw_resource_alloc_id(res);
}
/**
* Activate basically means that the function vmw_resource_lookup will
* find it.
*/
-
static void vmw_resource_activate(struct vmw_resource *res,
void (*hw_destroy) (struct vmw_resource *))
{
} *cmd;
- vmw_execbuf_release_pinned_bo(dev_priv, true, res->id);
-
+ vmw_execbuf_release_pinned_bo(dev_priv);
cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
if (unlikely(cmd == NULL)) {
DRM_ERROR("Failed reserving FIFO space for surface "
SVGA3dCmdDefineContext body;
} *cmd;
- ret = vmw_resource_init(dev_priv, res, &dev_priv->context_idr,
- VMW_RES_CONTEXT, false, res_free, NULL);
+ ret = vmw_resource_init(dev_priv, res, false,
+ res_free, &vmw_legacy_context_func);
if (unlikely(ret != 0)) {
DRM_ERROR("Failed to allocate a resource id.\n");
return NULL;
ret = vmw_context_init(dev_priv, res, NULL);
+
return (ret == 0) ? res : NULL;
}
* User-space context management:
*/
+static struct vmw_resource *
+vmw_user_context_base_to_res(struct ttm_base_object *base)
+{
+ return &(container_of(base, struct vmw_user_context, base)->res);
+}
+
static void vmw_user_context_free(struct vmw_resource *res)
{
struct vmw_user_context *ctx =
int vmw_context_destroy_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
- struct vmw_private *dev_priv = vmw_priv(dev);
- struct vmw_resource *res;
- struct vmw_user_context *ctx;
struct drm_vmw_context_arg *arg = (struct drm_vmw_context_arg *)data;
struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
- int ret = 0;
-
- res = vmw_resource_lookup(dev_priv, &dev_priv->context_idr, arg->cid);
- if (unlikely(res == NULL))
- return -EINVAL;
-
- if (res->res_free != &vmw_user_context_free) {
- ret = -EINVAL;
- goto out;
- }
- ctx = container_of(res, struct vmw_user_context, res);
- if (ctx->base.tfile != tfile && !ctx->base.shareable) {
- ret = -EPERM;
- goto out;
- }
-
- ttm_ref_object_base_unref(tfile, ctx->base.hash.key, TTM_REF_USAGE);
-out:
- vmw_resource_unreference(&res);
- return ret;
+ return ttm_ref_object_base_unref(tfile, arg->cid, TTM_REF_USAGE);
}
int vmw_context_define_ioctl(struct drm_device *dev, void *data,
goto out_unlock;
}
- ctx = kmalloc(sizeof(*ctx), GFP_KERNEL);
+ ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
if (unlikely(ctx == NULL)) {
ttm_mem_global_free(vmw_mem_glob(dev_priv),
vmw_user_context_size);
goto out_err;
}
- arg->cid = res->id;
+ arg->cid = ctx->base.hash.key;
out_err:
vmw_resource_unreference(&res);
out_unlock:
}
-int vmw_context_check(struct vmw_private *dev_priv,
- struct ttm_object_file *tfile,
- int id,
- struct vmw_resource **p_res)
-{
- struct vmw_resource *res;
- int ret = 0;
-
- read_lock(&dev_priv->resource_lock);
- res = idr_find(&dev_priv->context_idr, id);
- if (res && res->avail) {
- struct vmw_user_context *ctx =
- container_of(res, struct vmw_user_context, res);
- if (ctx->base.tfile != tfile && !ctx->base.shareable)
- ret = -EPERM;
- if (p_res)
- *p_res = vmw_resource_reference(res);
- } else
- ret = -EINVAL;
- read_unlock(&dev_priv->resource_lock);
-
- return ret;
-}
-
+/**
+ * struct vmw_bpp - Bits per pixel info for surface storage size computation.
+ *
+ * @bpp: Bits per pixel.
+ * @s_bpp: Stride bits per pixel. See definition below.
+ *
+ */
struct vmw_bpp {
uint8_t bpp;
uint8_t s_bpp;
/**
- * Surface management.
+ * struct vmw_surface_dma - SVGA3D DMA command
*/
-
struct vmw_surface_dma {
SVGA3dCmdHeader header;
SVGA3dCmdSurfaceDMA body;
SVGA3dCmdSurfaceDMASuffix suffix;
};
+/**
+ * struct vmw_surface_define - SVGA3D Surface Define command
+ */
struct vmw_surface_define {
SVGA3dCmdHeader header;
SVGA3dCmdDefineSurface body;
};
+/**
+ * struct vmw_surface_destroy - SVGA3D Surface Destroy command
+ */
struct vmw_surface_destroy {
SVGA3dCmdHeader header;
SVGA3dCmdDestroySurface body;
}
}
-
/**
* vmw_surface_dma_encode - Encode a surface_dma command.
*
};
+/**
+ * vmw_hw_surface_destroy - destroy a Device surface
+ *
+ * @res: Pointer to a struct vmw_resource embedded in a struct
+ * vmw_surface.
+ *
+ * Destroys a the device surface associated with a struct vmw_surface if
+ * any, and adjusts accounting and resource count accordingly.
+ */
static void vmw_hw_surface_destroy(struct vmw_resource *res)
{
*/
mutex_lock(&dev_priv->cmdbuf_mutex);
- srf = container_of(res, struct vmw_surface, res);
- dev_priv->used_memory_size -= srf->backup_size;
+ srf = vmw_res_to_srf(res);
+ dev_priv->used_memory_size -= res->backup_size;
mutex_unlock(&dev_priv->cmdbuf_mutex);
-
}
vmw_3d_resource_dec(dev_priv, false);
}
-void vmw_surface_res_free(struct vmw_resource *res)
-{
- struct vmw_surface *srf = container_of(res, struct vmw_surface, res);
-
- if (srf->backup)
- ttm_bo_unref(&srf->backup);
- kfree(srf->offsets);
- kfree(srf->sizes);
- kfree(srf->snooper.image);
- kfree(srf);
-}
-
-
/**
- * vmw_surface_do_validate - make a surface available to the device.
+ * vmw_legacy_srf_create - Create a device surface as part of the
+ * resource validation process.
*
- * @dev_priv: Pointer to a device private struct.
- * @srf: Pointer to a struct vmw_surface.
+ * @res: Pointer to a struct vmw_surface.
*
- * If the surface doesn't have a hw id, allocate one, and optionally
- * DMA the backed up surface contents to the device.
+ * If the surface doesn't have a hw id.
*
* Returns -EBUSY if there wasn't sufficient device resources to
* complete the validation. Retry after freeing up resources.
*
* May return other errors if the kernel is out of guest resources.
*/
-int vmw_surface_do_validate(struct vmw_private *dev_priv,
- struct vmw_surface *srf)
+static int vmw_legacy_srf_create(struct vmw_resource *res)
{
- struct vmw_resource *res = &srf->res;
- struct list_head val_list;
- struct ttm_validate_buffer val_buf;
+ struct vmw_private *dev_priv = res->dev_priv;
+ struct vmw_surface *srf;
uint32_t submit_size;
uint8_t *cmd;
int ret;
if (likely(res->id != -1))
return 0;
- if (unlikely(dev_priv->used_memory_size + srf->backup_size >=
+ srf = vmw_res_to_srf(res);
+ if (unlikely(dev_priv->used_memory_size + res->backup_size >=
dev_priv->memory_size))
return -EBUSY;
- /*
- * Reserve- and validate the backup DMA bo.
- */
-
- if (srf->backup) {
- INIT_LIST_HEAD(&val_list);
- val_buf.bo = ttm_bo_reference(srf->backup);
- list_add_tail(&val_buf.head, &val_list);
- ret = ttm_eu_reserve_buffers(&val_list);
- if (unlikely(ret != 0))
- goto out_no_reserve;
-
- ret = ttm_bo_validate(srf->backup, &vmw_srf_placement,
- true, false, false);
- if (unlikely(ret != 0))
- goto out_no_validate;
- }
-
/*
* Alloc id for the resource.
*/
- ret = vmw_resource_alloc_id(dev_priv, res);
+ ret = vmw_resource_alloc_id(res);
if (unlikely(ret != 0)) {
DRM_ERROR("Failed to allocate a surface id.\n");
goto out_no_id;
}
+
if (unlikely(res->id >= SVGA3D_MAX_SURFACE_IDS)) {
ret = -EBUSY;
goto out_no_fifo;
}
-
/*
- * Encode surface define- and dma commands.
+ * Encode surface define- commands.
*/
submit_size = vmw_surface_define_size(srf);
- if (srf->backup)
- submit_size += vmw_surface_dma_size(srf);
-
cmd = vmw_fifo_reserve(dev_priv, submit_size);
if (unlikely(cmd == NULL)) {
DRM_ERROR("Failed reserving FIFO space for surface "
- "validation.\n");
+ "creation.\n");
ret = -ENOMEM;
goto out_no_fifo;
}
vmw_surface_define_encode(srf, cmd);
- if (srf->backup) {
- SVGAGuestPtr ptr;
-
- cmd += vmw_surface_define_size(srf);
- vmw_bo_get_guest_ptr(srf->backup, &ptr);
- vmw_surface_dma_encode(srf, cmd, &ptr, true);
- }
-
vmw_fifo_commit(dev_priv, submit_size);
-
- /*
- * Create a fence object and fence the backup buffer.
- */
-
- if (srf->backup) {
- struct vmw_fence_obj *fence;
-
- (void) vmw_execbuf_fence_commands(NULL, dev_priv,
- &fence, NULL);
- ttm_eu_fence_buffer_objects(&val_list, fence);
- if (likely(fence != NULL))
- vmw_fence_obj_unreference(&fence);
- ttm_bo_unref(&val_buf.bo);
- ttm_bo_unref(&srf->backup);
- }
-
/*
* Surface memory usage accounting.
*/
- dev_priv->used_memory_size += srf->backup_size;
-
+ dev_priv->used_memory_size += res->backup_size;
return 0;
out_no_fifo:
vmw_resource_release_id(res);
out_no_id:
-out_no_validate:
- if (srf->backup)
- ttm_eu_backoff_reservation(&val_list);
-out_no_reserve:
- if (srf->backup)
- ttm_bo_unref(&val_buf.bo);
return ret;
}
/**
- * vmw_surface_evict - Evict a hw surface.
+ * vmw_legacy_srf_dma - Copy backup data to or from a legacy surface.
*
- * @dev_priv: Pointer to a device private struct.
- * @srf: Pointer to a struct vmw_surface
+ * @res: Pointer to a struct vmw_res embedded in a struct
+ * vmw_surface.
+ * @val_buf: Pointer to a struct ttm_validate_buffer containing
+ * information about the backup buffer.
+ * @bind: Boolean wether to DMA to the surface.
*
- * DMA the contents of a hw surface to a backup guest buffer object,
- * and destroy the hw surface, releasing its id.
+ * Transfer backup data to or from a legacy surface as part of the
+ * validation process.
+ * May return other errors if the kernel is out of guest resources.
+ * The backup buffer will be fenced or idle upon successful completion,
+ * and if the surface needs persistent backup storage, the backup buffer
+ * will also be returned reserved iff @bind is true.
*/
-int vmw_surface_evict(struct vmw_private *dev_priv,
- struct vmw_surface *srf)
+static int vmw_legacy_srf_dma(struct vmw_resource *res,
+ struct ttm_validate_buffer *val_buf,
+ bool bind)
{
- struct vmw_resource *res = &srf->res;
- struct list_head val_list;
- struct ttm_validate_buffer val_buf;
+ SVGAGuestPtr ptr;
+ struct vmw_fence_obj *fence;
uint32_t submit_size;
+ struct vmw_surface *srf = vmw_res_to_srf(res);
uint8_t *cmd;
- int ret;
- struct vmw_fence_obj *fence;
- SVGAGuestPtr ptr;
-
- BUG_ON(res->id == -1);
+ struct vmw_private *dev_priv = res->dev_priv;
- /*
- * Create a surface backup buffer object.
- */
+ BUG_ON(val_buf->bo == NULL);
- if (!srf->backup) {
- ret = ttm_bo_create(&dev_priv->bdev, srf->backup_size,
- ttm_bo_type_device,
- &vmw_srf_placement, 0, true,
- NULL, &srf->backup);
- if (unlikely(ret != 0))
- return ret;
+ submit_size = vmw_surface_dma_size(srf);
+ cmd = vmw_fifo_reserve(dev_priv, submit_size);
+ if (unlikely(cmd == NULL)) {
+ DRM_ERROR("Failed reserving FIFO space for surface "
+ "DMA.\n");
+ return -ENOMEM;
}
+ vmw_bo_get_guest_ptr(val_buf->bo, &ptr);
+ vmw_surface_dma_encode(srf, cmd, &ptr, bind);
+
+ vmw_fifo_commit(dev_priv, submit_size);
/*
- * Reserve- and validate the backup DMA bo.
+ * Create a fence object and fence the backup buffer.
*/
- INIT_LIST_HEAD(&val_list);
- val_buf.bo = ttm_bo_reference(srf->backup);
- list_add_tail(&val_buf.head, &val_list);
- ret = ttm_eu_reserve_buffers(&val_list);
- if (unlikely(ret != 0))
- goto out_no_reserve;
+ (void) vmw_execbuf_fence_commands(NULL, dev_priv,
+ &fence, NULL);
- ret = ttm_bo_validate(srf->backup, &vmw_srf_placement,
- true, false, false);
- if (unlikely(ret != 0))
- goto out_no_validate;
+ vmw_fence_single_bo(val_buf->bo, fence);
+
+ if (likely(fence != NULL))
+ vmw_fence_obj_unreference(&fence);
+
+ return 0;
+}
+
+/**
+ * vmw_legacy_srf_bind - Perform a legacy surface bind as part of the
+ * surface validation process.
+ *
+ * @res: Pointer to a struct vmw_res embedded in a struct
+ * vmw_surface.
+ * @val_buf: Pointer to a struct ttm_validate_buffer containing
+ * information about the backup buffer.
+ *
+ * This function will copy backup data to the surface if the
+ * backup buffer is dirty.
+ */
+static int vmw_legacy_srf_bind(struct vmw_resource *res,
+ struct ttm_validate_buffer *val_buf)
+{
+ if (!res->backup_dirty)
+ return 0;
+
+ return vmw_legacy_srf_dma(res, val_buf, true);
+}
+
+
+/**
+ * vmw_legacy_srf_unbind - Perform a legacy surface unbind as part of the
+ * surface eviction process.
+ *
+ * @res: Pointer to a struct vmw_res embedded in a struct
+ * vmw_surface.
+ * @val_buf: Pointer to a struct ttm_validate_buffer containing
+ * information about the backup buffer.
+ *
+ * This function will copy backup data from the surface.
+ */
+static int vmw_legacy_srf_unbind(struct vmw_resource *res,
+ bool readback,
+ struct ttm_validate_buffer *val_buf)
+{
+ if (unlikely(readback))
+ return vmw_legacy_srf_dma(res, val_buf, false);
+ return 0;
+}
+/**
+ * vmw_legacy_srf_destroy - Destroy a device surface as part of a
+ * resource eviction process.
+ *
+ * @res: Pointer to a struct vmw_res embedded in a struct
+ * vmw_surface.
+ */
+static int vmw_legacy_srf_destroy(struct vmw_resource *res)
+{
+ struct vmw_private *dev_priv = res->dev_priv;
+ uint32_t submit_size;
+ uint8_t *cmd;
+
+ BUG_ON(res->id == -1);
/*
* Encode the dma- and surface destroy commands.
*/
- submit_size = vmw_surface_dma_size(srf) + vmw_surface_destroy_size();
+ submit_size = vmw_surface_destroy_size();
cmd = vmw_fifo_reserve(dev_priv, submit_size);
if (unlikely(cmd == NULL)) {
DRM_ERROR("Failed reserving FIFO space for surface "
"eviction.\n");
- ret = -ENOMEM;
- goto out_no_fifo;
+ return -ENOMEM;
}
- vmw_bo_get_guest_ptr(srf->backup, &ptr);
- vmw_surface_dma_encode(srf, cmd, &ptr, false);
- cmd += vmw_surface_dma_size(srf);
vmw_surface_destroy_encode(res->id, cmd);
vmw_fifo_commit(dev_priv, submit_size);
* Surface memory usage accounting.
*/
- dev_priv->used_memory_size -= srf->backup_size;
-
- /*
- * Create a fence object and fence the DMA buffer.
- */
-
- (void) vmw_execbuf_fence_commands(NULL, dev_priv,
- &fence, NULL);
- ttm_eu_fence_buffer_objects(&val_list, fence);
- if (likely(fence != NULL))
- vmw_fence_obj_unreference(&fence);
- ttm_bo_unref(&val_buf.bo);
+ dev_priv->used_memory_size -= res->backup_size;
/*
* Release the surface ID.
vmw_resource_release_id(res);
return 0;
-
-out_no_fifo:
-out_no_validate:
- if (srf->backup)
- ttm_eu_backoff_reservation(&val_list);
-out_no_reserve:
- ttm_bo_unref(&val_buf.bo);
- ttm_bo_unref(&srf->backup);
- return ret;
}
/**
- * vmw_surface_validate - make a surface available to the device, evicting
- * other surfaces if needed.
- *
- * @dev_priv: Pointer to a device private struct.
- * @srf: Pointer to a struct vmw_surface.
+ * vmw_surface_init - initialize a struct vmw_surface
*
- * Try to validate a surface and if it fails due to limited device resources,
- * repeatedly try to evict other surfaces until the request can be
- * acommodated.
- *
- * May return errors if out of resources.
+ * @dev_priv: Pointer to a device private struct.
+ * @srf: Pointer to the struct vmw_surface to initialize.
+ * @res_free: Pointer to a resource destructor used to free
+ * the object.
*/
-int vmw_surface_validate(struct vmw_private *dev_priv,
- struct vmw_surface *srf)
+static int vmw_surface_init(struct vmw_private *dev_priv,
+ struct vmw_surface *srf,
+ void (*res_free) (struct vmw_resource *res))
{
int ret;
- struct vmw_surface *evict_srf;
-
- do {
- write_lock(&dev_priv->resource_lock);
- list_del_init(&srf->lru_head);
- write_unlock(&dev_priv->resource_lock);
-
- ret = vmw_surface_do_validate(dev_priv, srf);
- if (likely(ret != -EBUSY))
- break;
+ struct vmw_resource *res = &srf->res;
- write_lock(&dev_priv->resource_lock);
- if (list_empty(&dev_priv->surface_lru)) {
- DRM_ERROR("Out of device memory for surfaces.\n");
- ret = -EBUSY;
- write_unlock(&dev_priv->resource_lock);
- break;
- }
+ BUG_ON(res_free == NULL);
+ (void) vmw_3d_resource_inc(dev_priv, false);
+ ret = vmw_resource_init(dev_priv, res, true, res_free,
+ &vmw_legacy_surface_func);
- evict_srf = vmw_surface_reference
- (list_first_entry(&dev_priv->surface_lru,
- struct vmw_surface,
- lru_head));
- list_del_init(&evict_srf->lru_head);
+ if (unlikely(ret != 0)) {
+ vmw_3d_resource_dec(dev_priv, false);
+ res_free(res);
+ return ret;
+ }
- write_unlock(&dev_priv->resource_lock);
- (void) vmw_surface_evict(dev_priv, evict_srf);
-
- vmw_surface_unreference(&evict_srf);
-
- } while (1);
-
- if (unlikely(ret != 0 && srf->res.id != -1)) {
- write_lock(&dev_priv->resource_lock);
- list_add_tail(&srf->lru_head, &dev_priv->surface_lru);
- write_unlock(&dev_priv->resource_lock);
- }
+ /*
+ * The surface won't be visible to hardware until a
+ * surface validate.
+ */
+ vmw_resource_activate(res, vmw_hw_surface_destroy);
return ret;
}
-
/**
- * vmw_surface_remove_from_lists - Remove surface resources from lookup lists
+ * vmw_user_surface_base_to_res - TTM base object to resource converter for
+ * user visible surfaces
*
- * @res: Pointer to a struct vmw_resource embedded in a struct vmw_surface
+ * @base: Pointer to a TTM base object
*
- * As part of the resource destruction, remove the surface from any
- * lookup lists.
+ * Returns the struct vmw_resource embedded in a struct vmw_surface
+ * for the user-visible object identified by the TTM base object @base.
*/
-static void vmw_surface_remove_from_lists(struct vmw_resource *res)
+static struct vmw_resource *
+vmw_user_surface_base_to_res(struct ttm_base_object *base)
{
- struct vmw_surface *srf = container_of(res, struct vmw_surface, res);
-
- list_del_init(&srf->lru_head);
-}
-
-int vmw_surface_init(struct vmw_private *dev_priv,
- struct vmw_surface *srf,
- void (*res_free) (struct vmw_resource *res))
-{
- int ret;
- struct vmw_resource *res = &srf->res;
-
- BUG_ON(res_free == NULL);
- INIT_LIST_HEAD(&srf->lru_head);
- ret = vmw_resource_init(dev_priv, res, &dev_priv->surface_idr,
- VMW_RES_SURFACE, true, res_free,
- vmw_surface_remove_from_lists);
-
- if (unlikely(ret != 0))
- res_free(res);
-
- /*
- * The surface won't be visible to hardware until a
- * surface validate.
- */
-
- (void) vmw_3d_resource_inc(dev_priv, false);
- vmw_resource_activate(res, vmw_hw_surface_destroy);
- return ret;
+ return &(container_of(base, struct vmw_user_surface, base)->srf.res);
}
+/**
+ * vmw_user_surface_free - User visible surface resource destructor
+ *
+ * @res: A struct vmw_resource embedded in a struct vmw_surface.
+ */
static void vmw_user_surface_free(struct vmw_resource *res)
{
- struct vmw_surface *srf = container_of(res, struct vmw_surface, res);
+ struct vmw_surface *srf = vmw_res_to_srf(res);
struct vmw_user_surface *user_srf =
container_of(srf, struct vmw_user_surface, srf);
struct vmw_private *dev_priv = srf->res.dev_priv;
uint32_t size = user_srf->size;
- if (srf->backup)
- ttm_bo_unref(&srf->backup);
kfree(srf->offsets);
kfree(srf->sizes);
kfree(srf->snooper.image);
}
/**
- * vmw_resource_unreserve - unreserve resources previously reserved for
- * command submission.
+ * vmw_user_surface_free - User visible surface TTM base object destructor
*
- * @list_head: list of resources to unreserve.
+ * @p_base: Pointer to a pointer to a TTM base object
+ * embedded in a struct vmw_user_surface.
*
- * Currently only surfaces are considered, and unreserving a surface
- * means putting it back on the device's surface lru list,
- * so that it can be evicted if necessary.
- * This function traverses the resource list and
- * checks whether resources are surfaces, and in that case puts them back
- * on the device's surface LRU list.
+ * Drops the base object's reference on its resource, and the
+ * pointer pointed to by *p_base is set to NULL.
*/
-void vmw_resource_unreserve(struct list_head *list)
-{
- struct vmw_resource *res;
- struct vmw_surface *srf;
- rwlock_t *lock = NULL;
-
- list_for_each_entry(res, list, validate_head) {
-
- if (res->res_free != &vmw_surface_res_free &&
- res->res_free != &vmw_user_surface_free)
- continue;
-
- if (unlikely(lock == NULL)) {
- lock = &res->dev_priv->resource_lock;
- write_lock(lock);
- }
-
- srf = container_of(res, struct vmw_surface, res);
- list_del_init(&srf->lru_head);
- list_add_tail(&srf->lru_head, &res->dev_priv->surface_lru);
- }
-
- if (lock != NULL)
- write_unlock(lock);
-}
-
-/**
- * Helper function that looks either a surface or dmabuf.
- *
- * The pointer this pointed at by out_surf and out_buf needs to be null.
- */
-int vmw_user_lookup_handle(struct vmw_private *dev_priv,
- struct ttm_object_file *tfile,
- uint32_t handle,
- struct vmw_surface **out_surf,
- struct vmw_dma_buffer **out_buf)
-{
- int ret;
-
- BUG_ON(*out_surf || *out_buf);
-
- ret = vmw_user_surface_lookup_handle(dev_priv, tfile, handle, out_surf);
- if (!ret)
- return 0;
-
- ret = vmw_user_dmabuf_lookup(tfile, handle, out_buf);
- return ret;
-}
-
-
-int vmw_user_surface_lookup_handle(struct vmw_private *dev_priv,
- struct ttm_object_file *tfile,
- uint32_t handle, struct vmw_surface **out)
-{
- struct vmw_resource *res;
- struct vmw_surface *srf;
- struct vmw_user_surface *user_srf;
- struct ttm_base_object *base;
- int ret = -EINVAL;
-
- base = ttm_base_object_lookup(tfile, handle);
- if (unlikely(base == NULL))
- return -EINVAL;
-
- if (unlikely(base->object_type != VMW_RES_SURFACE))
- goto out_bad_resource;
-
- user_srf = container_of(base, struct vmw_user_surface, base);
- srf = &user_srf->srf;
- res = &srf->res;
-
- read_lock(&dev_priv->resource_lock);
-
- if (!res->avail || res->res_free != &vmw_user_surface_free) {
- read_unlock(&dev_priv->resource_lock);
- goto out_bad_resource;
- }
-
- kref_get(&res->kref);
- read_unlock(&dev_priv->resource_lock);
-
- *out = srf;
- ret = 0;
-
-out_bad_resource:
- ttm_base_object_unref(&base);
-
- return ret;
-}
-
static void vmw_user_surface_base_release(struct ttm_base_object **p_base)
{
struct ttm_base_object *base = *p_base;
vmw_resource_unreference(&res);
}
+/**
+ * vmw_user_surface_destroy_ioctl - Ioctl function implementing
+ * the user surface destroy functionality.
+ *
+ * @dev: Pointer to a struct drm_device.
+ * @data: Pointer to data copied from / to user-space.
+ * @file_priv: Pointer to a drm file private structure.
+ */
int vmw_surface_destroy_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
return ttm_ref_object_base_unref(tfile, arg->sid, TTM_REF_USAGE);
}
+/**
+ * vmw_user_surface_define_ioctl - Ioctl function implementing
+ * the user surface define functionality.
+ *
+ * @dev: Pointer to a struct drm_device.
+ * @data: Pointer to data copied from / to user-space.
+ * @file_priv: Pointer to a drm file private structure.
+ */
int vmw_surface_define_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
goto out_unlock;
}
- user_srf = kmalloc(sizeof(*user_srf), GFP_KERNEL);
+ user_srf = kzalloc(sizeof(*user_srf), GFP_KERNEL);
if (unlikely(user_srf == NULL)) {
ret = -ENOMEM;
goto out_no_user_srf;
srf->flags = req->flags;
srf->format = req->format;
srf->scanout = req->scanout;
- srf->backup = NULL;
memcpy(srf->mip_levels, req->mip_levels, sizeof(srf->mip_levels));
srf->num_sizes = num_sizes;
goto out_no_copy;
}
+ srf->base_size = *srf->sizes;
+ srf->autogen_filter = SVGA3D_TEX_FILTER_NONE;
+ srf->multisample_count = 1;
+
cur_bo_offset = 0;
cur_offset = srf->offsets;
cur_size = srf->sizes;
++cur_size;
}
}
- srf->backup_size = cur_bo_offset;
+ res->backup_size = cur_bo_offset;
if (srf->scanout &&
srf->num_sizes == 1 &&
}
rep->sid = user_srf->base.hash.key;
- if (rep->sid == SVGA3D_INVALID_ID)
- DRM_ERROR("Created bad Surface ID.\n");
-
vmw_resource_unreference(&res);
ttm_read_unlock(&vmaster->lock);
return ret;
}
+/**
+ * vmw_user_surface_define_ioctl - Ioctl function implementing
+ * the user surface reference functionality.
+ *
+ * @dev: Pointer to a struct drm_device.
+ * @data: Pointer to data copied from / to user-space.
+ * @file_priv: Pointer to a drm file private structure.
+ */
int vmw_surface_reference_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
return ret;
}
-int vmw_surface_check(struct vmw_private *dev_priv,
- struct ttm_object_file *tfile,
- uint32_t handle, int *id)
+/**
+ * vmw_user_resource_lookup_handle - lookup a struct resource from a
+ * TTM user-space handle and perform basic type checks
+ *
+ * @dev_priv: Pointer to a device private struct
+ * @tfile: Pointer to a struct ttm_object_file identifying the caller
+ * @handle: The TTM user-space handle
+ * @converter: Pointer to an object describing the resource type
+ * @p_res: On successful return the location pointed to will contain
+ * a pointer to a refcounted struct vmw_resource.
+ *
+ * If the handle can't be found or is associated with an incorrect resource
+ * type, -EINVAL will be returned.
+ */
+int vmw_user_resource_lookup_handle(struct vmw_private *dev_priv,
+ struct ttm_object_file *tfile,
+ uint32_t handle,
+ const struct vmw_user_resource_conv
+ *converter,
+ struct vmw_resource **p_res)
{
struct ttm_base_object *base;
- struct vmw_user_surface *user_srf;
-
- int ret = -EPERM;
+ struct vmw_resource *res;
+ int ret = -EINVAL;
base = ttm_base_object_lookup(tfile, handle);
if (unlikely(base == NULL))
return -EINVAL;
- if (unlikely(base->object_type != VMW_RES_SURFACE))
- goto out_bad_surface;
+ if (unlikely(base->object_type != converter->object_type))
+ goto out_bad_resource;
- user_srf = container_of(base, struct vmw_user_surface, base);
- *id = user_srf->srf.res.id;
- ret = 0;
+ res = converter->base_obj_to_res(base);
-out_bad_surface:
- /**
- * FIXME: May deadlock here when called from the
- * command parsing code.
- */
+ read_lock(&dev_priv->resource_lock);
+ if (!res->avail || res->res_free != converter->res_free) {
+ read_unlock(&dev_priv->resource_lock);
+ goto out_bad_resource;
+ }
+ kref_get(&res->kref);
+ read_unlock(&dev_priv->resource_lock);
+
+ *p_res = res;
+ ret = 0;
+
+out_bad_resource:
ttm_base_object_unref(&base);
+
+ return ret;
+}
+
+/**
+ * Helper function that looks either a surface or dmabuf.
+ *
+ * The pointer this pointed at by out_surf and out_buf needs to be null.
+ */
+int vmw_user_lookup_handle(struct vmw_private *dev_priv,
+ struct ttm_object_file *tfile,
+ uint32_t handle,
+ struct vmw_surface **out_surf,
+ struct vmw_dma_buffer **out_buf)
+{
+ struct vmw_resource *res;
+ int ret;
+
+ BUG_ON(*out_surf || *out_buf);
+
+ ret = vmw_user_resource_lookup_handle(dev_priv, tfile, handle,
+ user_surface_converter,
+ &res);
+ if (!ret) {
+ *out_surf = vmw_res_to_srf(res);
+ return 0;
+ }
+
+ *out_surf = NULL;
+ ret = vmw_user_dmabuf_lookup(tfile, handle, out_buf);
return ret;
}
acc_size = ttm_bo_acc_size(bdev, size, sizeof(struct vmw_dma_buffer));
memset(vmw_bo, 0, sizeof(*vmw_bo));
- INIT_LIST_HEAD(&vmw_bo->validate_list);
+ INIT_LIST_HEAD(&vmw_bo->res_list);
ret = ttm_bo_init(bdev, &vmw_bo->base, size,
ttm_bo_type_device, placement,
ttm_bo_unref(&bo);
}
+/**
+ * vmw_user_dmabuf_alloc - Allocate a user dma buffer
+ *
+ * @dev_priv: Pointer to a struct device private.
+ * @tfile: Pointer to a struct ttm_object_file on which to register the user
+ * object.
+ * @size: Size of the dma buffer.
+ * @shareable: Boolean whether the buffer is shareable with other open files.
+ * @handle: Pointer to where the handle value should be assigned.
+ * @p_dma_buf: Pointer to where the refcounted struct vmw_dma_buffer pointer
+ * should be assigned.
+ */
+int vmw_user_dmabuf_alloc(struct vmw_private *dev_priv,
+ struct ttm_object_file *tfile,
+ uint32_t size,
+ bool shareable,
+ uint32_t *handle,
+ struct vmw_dma_buffer **p_dma_buf)
+{
+ struct vmw_user_dma_buffer *user_bo;
+ struct ttm_buffer_object *tmp;
+ int ret;
+
+ user_bo = kzalloc(sizeof(*user_bo), GFP_KERNEL);
+ if (unlikely(user_bo == NULL)) {
+ DRM_ERROR("Failed to allocate a buffer.\n");
+ return -ENOMEM;
+ }
+
+ ret = vmw_dmabuf_init(dev_priv, &user_bo->dma, size,
+ &vmw_vram_sys_placement, true,
+ &vmw_user_dmabuf_destroy);
+ if (unlikely(ret != 0))
+ return ret;
+
+ tmp = ttm_bo_reference(&user_bo->dma.base);
+ ret = ttm_base_object_init(tfile,
+ &user_bo->base,
+ shareable,
+ ttm_buffer_type,
+ &vmw_user_dmabuf_release, NULL);
+ if (unlikely(ret != 0)) {
+ ttm_bo_unref(&tmp);
+ goto out_no_base_object;
+ }
+
+ *p_dma_buf = &user_bo->dma;
+ *handle = user_bo->base.hash.key;
+
+out_no_base_object:
+ return ret;
+}
+
int vmw_dmabuf_alloc_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
(union drm_vmw_alloc_dmabuf_arg *)data;
struct drm_vmw_alloc_dmabuf_req *req = &arg->req;
struct drm_vmw_dmabuf_rep *rep = &arg->rep;
- struct vmw_user_dma_buffer *vmw_user_bo;
- struct ttm_buffer_object *tmp;
+ struct vmw_dma_buffer *dma_buf;
+ uint32_t handle;
struct vmw_master *vmaster = vmw_master(file_priv->master);
int ret;
- vmw_user_bo = kzalloc(sizeof(*vmw_user_bo), GFP_KERNEL);
- if (unlikely(vmw_user_bo == NULL))
- return -ENOMEM;
-
ret = ttm_read_lock(&vmaster->lock, true);
- if (unlikely(ret != 0)) {
- kfree(vmw_user_bo);
+ if (unlikely(ret != 0))
return ret;
- }
- ret = vmw_dmabuf_init(dev_priv, &vmw_user_bo->dma, req->size,
- &vmw_vram_sys_placement, true,
- &vmw_user_dmabuf_destroy);
+ ret = vmw_user_dmabuf_alloc(dev_priv, vmw_fpriv(file_priv)->tfile,
+ req->size, false, &handle, &dma_buf);
if (unlikely(ret != 0))
goto out_no_dmabuf;
- tmp = ttm_bo_reference(&vmw_user_bo->dma.base);
- ret = ttm_base_object_init(vmw_fpriv(file_priv)->tfile,
- &vmw_user_bo->base,
- false,
- ttm_buffer_type,
- &vmw_user_dmabuf_release, NULL);
- if (unlikely(ret != 0))
- goto out_no_base_object;
- else {
- rep->handle = vmw_user_bo->base.hash.key;
- rep->map_handle = vmw_user_bo->dma.base.addr_space_offset;
- rep->cur_gmr_id = vmw_user_bo->base.hash.key;
- rep->cur_gmr_offset = 0;
- }
+ rep->handle = handle;
+ rep->map_handle = dma_buf->base.addr_space_offset;
+ rep->cur_gmr_id = handle;
+ rep->cur_gmr_offset = 0;
+
+ vmw_dmabuf_unreference(&dma_buf);
-out_no_base_object:
- ttm_bo_unref(&tmp);
out_no_dmabuf:
ttm_read_unlock(&vmaster->lock);
TTM_REF_USAGE);
}
-uint32_t vmw_dmabuf_validate_node(struct ttm_buffer_object *bo,
- uint32_t cur_validate_node)
-{
- struct vmw_dma_buffer *vmw_bo = vmw_dma_buffer(bo);
-
- if (likely(vmw_bo->on_validate_list))
- return vmw_bo->cur_validate_node;
-
- vmw_bo->cur_validate_node = cur_validate_node;
- vmw_bo->on_validate_list = true;
-
- return cur_validate_node;
-}
-
-void vmw_dmabuf_validate_clear(struct ttm_buffer_object *bo)
-{
- struct vmw_dma_buffer *vmw_bo = vmw_dma_buffer(bo);
-
- vmw_bo->on_validate_list = false;
-}
-
int vmw_user_dmabuf_lookup(struct ttm_object_file *tfile,
uint32_t handle, struct vmw_dma_buffer **out)
{
return 0;
}
+int vmw_user_dmabuf_reference(struct ttm_object_file *tfile,
+ struct vmw_dma_buffer *dma_buf)
+{
+ struct vmw_user_dma_buffer *user_bo;
+
+ if (dma_buf->base.destroy != vmw_user_dmabuf_destroy)
+ return -EINVAL;
+
+ user_bo = container_of(dma_buf, struct vmw_user_dma_buffer, dma);
+ return ttm_ref_object_add(tfile, &user_bo->base, TTM_REF_USAGE, NULL);
+}
+
/*
* Stream management
*/
struct vmw_resource *res = &stream->res;
int ret;
- ret = vmw_resource_init(dev_priv, res, &dev_priv->stream_idr,
- VMW_RES_STREAM, false, res_free, NULL);
+ ret = vmw_resource_init(dev_priv, res, false, res_free,
+ &vmw_stream_func);
if (unlikely(ret != 0)) {
if (res_free == NULL)
return 0;
}
-/**
- * User-space context management:
- */
-
static void vmw_user_stream_free(struct vmw_resource *res)
{
struct vmw_user_stream *stream =
struct vmw_user_stream *stream;
struct drm_vmw_stream_arg *arg = (struct drm_vmw_stream_arg *)data;
struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
+ struct idr *idr = &dev_priv->res_idr[vmw_res_stream];
int ret = 0;
- res = vmw_resource_lookup(dev_priv, &dev_priv->stream_idr, arg->stream_id);
+
+ res = vmw_resource_lookup(dev_priv, idr, arg->stream_id);
if (unlikely(res == NULL))
return -EINVAL;
struct vmw_resource *res;
int ret;
- res = vmw_resource_lookup(dev_priv, &dev_priv->stream_idr, *inout_id);
+ res = vmw_resource_lookup(dev_priv, &dev_priv->res_idr[vmw_res_stream],
+ *inout_id);
if (unlikely(res == NULL))
return -EINVAL;
return ttm_ref_object_base_unref(vmw_fpriv(file_priv)->tfile,
handle, TTM_REF_USAGE);
}
+
+/**
+ * vmw_resource_buf_alloc - Allocate a backup buffer for a resource.
+ *
+ * @res: The resource for which to allocate a backup buffer.
+ * @interruptible: Whether any sleeps during allocation should be
+ * performed while interruptible.
+ */
+static int vmw_resource_buf_alloc(struct vmw_resource *res,
+ bool interruptible)
+{
+ unsigned long size =
+ (res->backup_size + PAGE_SIZE - 1) & PAGE_MASK;
+ struct vmw_dma_buffer *backup;
+ int ret;
+
+ if (likely(res->backup)) {
+ BUG_ON(res->backup->base.num_pages * PAGE_SIZE < size);
+ return 0;
+ }
+
+ backup = kzalloc(sizeof(*backup), GFP_KERNEL);
+ if (unlikely(backup == NULL))
+ return -ENOMEM;
+
+ ret = vmw_dmabuf_init(res->dev_priv, backup, res->backup_size,
+ res->func->backup_placement,
+ interruptible,
+ &vmw_dmabuf_bo_free);
+ if (unlikely(ret != 0))
+ goto out_no_dmabuf;
+
+ res->backup = backup;
+
+out_no_dmabuf:
+ return ret;
+}
+
+/**
+ * vmw_resource_do_validate - Make a resource up-to-date and visible
+ * to the device.
+ *
+ * @res: The resource to make visible to the device.
+ * @val_buf: Information about a buffer possibly
+ * containing backup data if a bind operation is needed.
+ *
+ * On hardware resource shortage, this function returns -EBUSY and
+ * should be retried once resources have been freed up.
+ */
+static int vmw_resource_do_validate(struct vmw_resource *res,
+ struct ttm_validate_buffer *val_buf)
+{
+ int ret = 0;
+ const struct vmw_res_func *func = res->func;
+
+ if (unlikely(res->id == -1)) {
+ ret = func->create(res);
+ if (unlikely(ret != 0))
+ return ret;
+ }
+
+ if (func->bind &&
+ ((func->needs_backup && list_empty(&res->mob_head) &&
+ val_buf->bo != NULL) ||
+ (!func->needs_backup && val_buf->bo != NULL))) {
+ ret = func->bind(res, val_buf);
+ if (unlikely(ret != 0))
+ goto out_bind_failed;
+ if (func->needs_backup)
+ list_add_tail(&res->mob_head, &res->backup->res_list);
+ }
+
+ /*
+ * Only do this on write operations, and move to
+ * vmw_resource_unreserve if it can be called after
+ * backup buffers have been unreserved. Otherwise
+ * sort out locking.
+ */
+ res->res_dirty = true;
+
+ return 0;
+
+out_bind_failed:
+ func->destroy(res);
+
+ return ret;
+}
+
+/**
+ * vmw_resource_unreserve - Unreserve a resource previously reserved for
+ * command submission.
+ *
+ * @res: Pointer to the struct vmw_resource to unreserve.
+ * @new_backup: Pointer to new backup buffer if command submission
+ * switched.
+ * @new_backup_offset: New backup offset if @new_backup is !NULL.
+ *
+ * Currently unreserving a resource means putting it back on the device's
+ * resource lru list, so that it can be evicted if necessary.
+ */
+void vmw_resource_unreserve(struct vmw_resource *res,
+ struct vmw_dma_buffer *new_backup,
+ unsigned long new_backup_offset)
+{
+ struct vmw_private *dev_priv = res->dev_priv;
+
+ if (!list_empty(&res->lru_head))
+ return;
+
+ if (new_backup && new_backup != res->backup) {
+
+ if (res->backup) {
+ BUG_ON(atomic_read(&res->backup->base.reserved) == 0);
+ list_del_init(&res->mob_head);
+ vmw_dmabuf_unreference(&res->backup);
+ }
+
+ res->backup = vmw_dmabuf_reference(new_backup);
+ BUG_ON(atomic_read(&new_backup->base.reserved) == 0);
+ list_add_tail(&res->mob_head, &new_backup->res_list);
+ }
+ if (new_backup)
+ res->backup_offset = new_backup_offset;
+
+ if (!res->func->may_evict)
+ return;
+
+ write_lock(&dev_priv->resource_lock);
+ list_add_tail(&res->lru_head,
+ &res->dev_priv->res_lru[res->func->res_type]);
+ write_unlock(&dev_priv->resource_lock);
+}
+
+/**
+ * vmw_resource_check_buffer - Check whether a backup buffer is needed
+ * for a resource and in that case, allocate
+ * one, reserve and validate it.
+ *
+ * @res: The resource for which to allocate a backup buffer.
+ * @interruptible: Whether any sleeps during allocation should be
+ * performed while interruptible.
+ * @val_buf: On successful return contains data about the
+ * reserved and validated backup buffer.
+ */
+int vmw_resource_check_buffer(struct vmw_resource *res,
+ bool interruptible,
+ struct ttm_validate_buffer *val_buf)
+{
+ struct list_head val_list;
+ bool backup_dirty = false;
+ int ret;
+
+ if (unlikely(res->backup == NULL)) {
+ ret = vmw_resource_buf_alloc(res, interruptible);
+ if (unlikely(ret != 0))
+ return ret;
+ }
+
+ INIT_LIST_HEAD(&val_list);
+ val_buf->bo = ttm_bo_reference(&res->backup->base);
+ list_add_tail(&val_buf->head, &val_list);
+ ret = ttm_eu_reserve_buffers(&val_list);
+ if (unlikely(ret != 0))
+ goto out_no_reserve;
+
+ if (res->func->needs_backup && list_empty(&res->mob_head))
+ return 0;
+
+ backup_dirty = res->backup_dirty;
+ ret = ttm_bo_validate(&res->backup->base,
+ res->func->backup_placement,
+ true, false, false);
+
+ if (unlikely(ret != 0))
+ goto out_no_validate;
+
+ return 0;
+
+out_no_validate:
+ ttm_eu_backoff_reservation(&val_list);
+out_no_reserve:
+ ttm_bo_unref(&val_buf->bo);
+ if (backup_dirty)
+ vmw_dmabuf_unreference(&res->backup);
+
+ return ret;
+}
+
+/**
+ * vmw_resource_reserve - Reserve a resource for command submission
+ *
+ * @res: The resource to reserve.
+ *
+ * This function takes the resource off the LRU list and make sure
+ * a backup buffer is present for guest-backed resources. However,
+ * the buffer may not be bound to the resource at this point.
+ *
+ */
+int vmw_resource_reserve(struct vmw_resource *res, bool no_backup)
+{
+ struct vmw_private *dev_priv = res->dev_priv;
+ int ret;
+
+ write_lock(&dev_priv->resource_lock);
+ list_del_init(&res->lru_head);
+ write_unlock(&dev_priv->resource_lock);
+
+ if (res->func->needs_backup && res->backup == NULL &&
+ !no_backup) {
+ ret = vmw_resource_buf_alloc(res, true);
+ if (unlikely(ret != 0))
+ return ret;
+ }
+
+ return 0;
+}
+
+/**
+ * vmw_resource_backoff_reservation - Unreserve and unreference a
+ * backup buffer
+ *.
+ * @val_buf: Backup buffer information.
+ */
+void vmw_resource_backoff_reservation(struct ttm_validate_buffer *val_buf)
+{
+ struct list_head val_list;
+
+ if (likely(val_buf->bo == NULL))
+ return;
+
+ INIT_LIST_HEAD(&val_list);
+ list_add_tail(&val_buf->head, &val_list);
+ ttm_eu_backoff_reservation(&val_list);
+ ttm_bo_unref(&val_buf->bo);
+}
+
+/**
+ * vmw_resource_do_evict - Evict a resource, and transfer its data
+ * to a backup buffer.
+ *
+ * @res: The resource to evict.
+ */
+int vmw_resource_do_evict(struct vmw_resource *res)
+{
+ struct ttm_validate_buffer val_buf;
+ const struct vmw_res_func *func = res->func;
+ int ret;
+
+ BUG_ON(!func->may_evict);
+
+ val_buf.bo = NULL;
+ ret = vmw_resource_check_buffer(res, true, &val_buf);
+ if (unlikely(ret != 0))
+ return ret;
+
+ if (unlikely(func->unbind != NULL &&
+ (!func->needs_backup || !list_empty(&res->mob_head)))) {
+ ret = func->unbind(res, res->res_dirty, &val_buf);
+ if (unlikely(ret != 0))
+ goto out_no_unbind;
+ list_del_init(&res->mob_head);
+ }
+ ret = func->destroy(res);
+ res->backup_dirty = true;
+ res->res_dirty = false;
+out_no_unbind:
+ vmw_resource_backoff_reservation(&val_buf);
+
+ return ret;
+}
+
+
+/**
+ * vmw_resource_validate - Make a resource up-to-date and visible
+ * to the device.
+ *
+ * @res: The resource to make visible to the device.
+ *
+ * On succesful return, any backup DMA buffer pointed to by @res->backup will
+ * be reserved and validated.
+ * On hardware resource shortage, this function will repeatedly evict
+ * resources of the same type until the validation succeeds.
+ */
+int vmw_resource_validate(struct vmw_resource *res)
+{
+ int ret;
+ struct vmw_resource *evict_res;
+ struct vmw_private *dev_priv = res->dev_priv;
+ struct list_head *lru_list = &dev_priv->res_lru[res->func->res_type];
+ struct ttm_validate_buffer val_buf;
+
+ if (likely(!res->func->may_evict))
+ return 0;
+
+ val_buf.bo = NULL;
+ if (res->backup)
+ val_buf.bo = &res->backup->base;
+ do {
+ ret = vmw_resource_do_validate(res, &val_buf);
+ if (likely(ret != -EBUSY))
+ break;
+
+ write_lock(&dev_priv->resource_lock);
+ if (list_empty(lru_list) || !res->func->may_evict) {
+ DRM_ERROR("Out of device device id entries "
+ "for %s.\n", res->func->type_name);
+ ret = -EBUSY;
+ write_unlock(&dev_priv->resource_lock);
+ break;
+ }
+
+ evict_res = vmw_resource_reference
+ (list_first_entry(lru_list, struct vmw_resource,
+ lru_head));
+ list_del_init(&evict_res->lru_head);
+
+ write_unlock(&dev_priv->resource_lock);
+ vmw_resource_do_evict(evict_res);
+ vmw_resource_unreference(&evict_res);
+ } while (1);
+
+ if (unlikely(ret != 0))
+ goto out_no_validate;
+ else if (!res->func->needs_backup && res->backup) {
+ list_del_init(&res->mob_head);
+ vmw_dmabuf_unreference(&res->backup);
+ }
+
+ return 0;
+
+out_no_validate:
+ return ret;
+}
+
+/**
+ * vmw_fence_single_bo - Utility function to fence a single TTM buffer
+ * object without unreserving it.
+ *
+ * @bo: Pointer to the struct ttm_buffer_object to fence.
+ * @fence: Pointer to the fence. If NULL, this function will
+ * insert a fence into the command stream..
+ *
+ * Contrary to the ttm_eu version of this function, it takes only
+ * a single buffer object instead of a list, and it also doesn't
+ * unreserve the buffer object, which needs to be done separately.
+ */
+void vmw_fence_single_bo(struct ttm_buffer_object *bo,
+ struct vmw_fence_obj *fence)
+{
+ struct ttm_bo_device *bdev = bo->bdev;
+ struct ttm_bo_driver *driver = bdev->driver;
+ struct vmw_fence_obj *old_fence_obj;
+ struct vmw_private *dev_priv =
+ container_of(bdev, struct vmw_private, bdev);
+
+ if (fence == NULL)
+ vmw_execbuf_fence_commands(NULL, dev_priv, &fence, NULL);
+ else
+ driver->sync_obj_ref(fence);
+
+ spin_lock(&bdev->fence_lock);
+
+ old_fence_obj = bo->sync_obj;
+ bo->sync_obj = fence;
+
+ spin_unlock(&bdev->fence_lock);
+
+ if (old_fence_obj)
+ vmw_fence_obj_unreference(&old_fence_obj);
+}
+
+/**
+ * vmw_resource_move_notify - TTM move_notify_callback
+ *
+ * @bo: The TTM buffer object about to move.
+ * @mem: The truct ttm_mem_reg indicating to what memory
+ * region the move is taking place.
+ *
+ * For now does nothing.
+ */
+void vmw_resource_move_notify(struct ttm_buffer_object *bo,
+ struct ttm_mem_reg *mem)
+{
+}
+
+/**
+ * vmw_resource_needs_backup - Return whether a resource needs a backup buffer.
+ *
+ * @res: The resource being queried.
+ */
+bool vmw_resource_needs_backup(const struct vmw_resource *res)
+{
+ return res->func->needs_backup;
+}
+
+/**
+ * vmw_resource_evict_type - Evict all resources of a specific type
+ *
+ * @dev_priv: Pointer to a device private struct
+ * @type: The resource type to evict
+ *
+ * To avoid thrashing starvation or as part of the hibernation sequence,
+ * evict all evictable resources of a specific type.
+ */
+static void vmw_resource_evict_type(struct vmw_private *dev_priv,
+ enum vmw_res_type type)
+{
+ struct list_head *lru_list = &dev_priv->res_lru[type];
+ struct vmw_resource *evict_res;
+
+ do {
+ write_lock(&dev_priv->resource_lock);
+
+ if (list_empty(lru_list))
+ goto out_unlock;
+
+ evict_res = vmw_resource_reference(
+ list_first_entry(lru_list, struct vmw_resource,
+ lru_head));
+ list_del_init(&evict_res->lru_head);
+ write_unlock(&dev_priv->resource_lock);
+ vmw_resource_do_evict(evict_res);
+ vmw_resource_unreference(&evict_res);
+ } while (1);
+
+out_unlock:
+ write_unlock(&dev_priv->resource_lock);
+}
+
+/**
+ * vmw_resource_evict_all - Evict all evictable resources
+ *
+ * @dev_priv: Pointer to a device private struct
+ *
+ * To avoid thrashing starvation or as part of the hibernation sequence,
+ * evict all evictable resources. In particular this means that all
+ * guest-backed resources that are registered with the device are
+ * evicted and the OTable becomes clean.
+ */
+void vmw_resource_evict_all(struct vmw_private *dev_priv)
+{
+ enum vmw_res_type type;
+
+ mutex_lock(&dev_priv->cmdbuf_mutex);
+
+ for (type = 0; type < vmw_res_max; ++type)
+ vmw_resource_evict_type(dev_priv, type);
+
+ mutex_unlock(&dev_priv->cmdbuf_mutex);
+}
projects / GitHub / MotorolaMobilityLLC / kernel-slsi.git / commitdiff