0,0 → 1,1779 |
/************************************************************************** |
* |
* Copyright © 2009 VMware, Inc., Palo Alto, CA., USA |
* 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, sub license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL |
* THE COPYRIGHT HOLDERS, AUTHORS 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 "vmwgfx_drv.h" |
#include "vmwgfx_reg.h" |
#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; //capable(CAP_SYS_ADMIN) ? : -EINVAL; |
} |
|
static int vmw_cmd_ok(struct vmw_private *dev_priv, |
struct vmw_sw_context *sw_context, |
SVGA3dCmdHeader *header) |
{ |
return 0; |
} |
|
/** |
* 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. |
* @p_val_node: If non-NULL Will be updated with the validate node number |
* on return. |
* |
* Returns -EINVAL if the limit of number of buffer objects per command |
* submission is reached. |
*/ |
static int vmw_bo_to_validate_list(struct vmw_sw_context *sw_context, |
struct ttm_buffer_object *bo, |
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; |
|
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->fence_flags |= DRM_VMW_FENCE_FLAG_EXEC; |
|
if (p_val_node) |
*p_val_node = val_node; |
|
return 0; |
} |
|
/** |
* 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_val_node *val; |
int ret; |
|
list_for_each_entry(val, &sw_context->resource_list, head) { |
struct vmw_resource *res = val->res; |
|
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; |
} |
|
/** |
* 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; |
} |
|
/** |
* 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, |
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_res_cache_entry *rcache = |
&sw_context->res_cache[res_type]; |
struct vmw_resource *res; |
struct vmw_resource_val_node *node; |
int ret; |
|
if (*id == SVGA3D_INVALID_ID) |
return 0; |
|
/* |
* Fastpath in case of repeated commands referencing the same |
* resource |
*/ |
|
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_user_resource_lookup_handle(dev_priv, |
sw_context->tfile, |
*id, |
converter, |
&res); |
if (unlikely(ret != 0)) { |
DRM_ERROR("Could not find or use resource 0x%08x.\n", |
(unsigned) *id); |
// dump_stack(); |
return ret; |
} |
|
rcache->valid = true; |
rcache->res = res; |
rcache->handle = *id; |
|
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, |
SVGA3dCmdHeader *header) |
{ |
struct vmw_sid_cmd { |
SVGA3dCmdHeader header; |
SVGA3dCmdSetRenderTarget body; |
} *cmd; |
int ret; |
|
ret = vmw_cmd_cid_check(dev_priv, sw_context, header); |
if (unlikely(ret != 0)) |
return ret; |
|
cmd = container_of(header, struct vmw_sid_cmd, header); |
ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface, |
user_surface_converter, |
&cmd->body.target.sid, NULL); |
return ret; |
} |
|
static int vmw_cmd_surface_copy_check(struct vmw_private *dev_priv, |
struct vmw_sw_context *sw_context, |
SVGA3dCmdHeader *header) |
{ |
struct vmw_sid_cmd { |
SVGA3dCmdHeader header; |
SVGA3dCmdSurfaceCopy body; |
} *cmd; |
int ret; |
|
cmd = container_of(header, struct vmw_sid_cmd, header); |
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_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, |
struct vmw_sw_context *sw_context, |
SVGA3dCmdHeader *header) |
{ |
struct vmw_sid_cmd { |
SVGA3dCmdHeader header; |
SVGA3dCmdSurfaceStretchBlt body; |
} *cmd; |
int ret; |
|
cmd = container_of(header, struct vmw_sid_cmd, header); |
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_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, |
struct vmw_sw_context *sw_context, |
SVGA3dCmdHeader *header) |
{ |
struct vmw_sid_cmd { |
SVGA3dCmdHeader header; |
SVGA3dCmdBlitSurfaceToScreen body; |
} *cmd; |
|
cmd = container_of(header, struct vmw_sid_cmd, header); |
|
if (unlikely(!sw_context->kernel)) { |
DRM_ERROR("Kernel only SVGA3d command: %u.\n", cmd->header.id); |
return -EPERM; |
} |
|
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, |
struct vmw_sw_context *sw_context, |
SVGA3dCmdHeader *header) |
{ |
struct vmw_sid_cmd { |
SVGA3dCmdHeader header; |
SVGA3dCmdPresent body; |
} *cmd; |
|
|
cmd = container_of(header, struct vmw_sid_cmd, header); |
|
if (unlikely(!sw_context->kernel)) { |
DRM_ERROR("Kernel only SVGA3d command: %u.\n", cmd->header.id); |
return -EPERM; |
} |
|
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. |
* @new_query_bo: The new buffer holding query results. |
* @sw_context: The software context used for this command submission. |
* |
* This function checks whether @new_query_bo is suitable for holding |
* 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. |
*/ |
static int vmw_query_bo_switch_prepare(struct vmw_private *dev_priv, |
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; |
|
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(new_query_bo->num_pages > 4)) { |
DRM_ERROR("Query buffer too large.\n"); |
return -EINVAL; |
} |
|
if (unlikely(sw_context->cur_query_bo != NULL)) { |
sw_context->needs_post_query_barrier = true; |
ret = vmw_bo_to_validate_list(sw_context, |
sw_context->cur_query_bo, |
NULL); |
if (unlikely(ret != 0)) |
return ret; |
} |
sw_context->cur_query_bo = new_query_bo; |
|
ret = vmw_bo_to_validate_list(sw_context, |
dev_priv->dummy_query_bo, |
NULL); |
if (unlikely(ret != 0)) |
return ret; |
|
} |
|
return 0; |
} |
|
|
/** |
* vmw_query_bo_switch_commit - Finalize switching pinned query buffer |
* |
* @dev_priv: The device private structure. |
* @sw_context: The software context used for this command submission batch. |
* |
* This function will check if we're switching query buffers, and will then, |
* 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 |
* 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. |
* |
* As mentioned above, both the new - and old query buffers need to be fenced |
* using a sequence emitted *after* calling this function. |
*/ |
static void vmw_query_bo_switch_commit(struct vmw_private *dev_priv, |
struct vmw_sw_context *sw_context) |
{ |
/* |
* The validate list should still hold references to all |
* contexts here. |
*/ |
|
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(!ctx_entry->valid); |
ctx = ctx_entry->res; |
|
ret = vmw_fifo_emit_dummy_query(dev_priv, ctx->id); |
|
if (unlikely(ret != 0)) |
DRM_ERROR("Out of fifo space for dummy query.\n"); |
} |
|
if (dev_priv->pinned_bo != sw_context->cur_query_bo) { |
if (dev_priv->pinned_bo) { |
vmw_bo_pin(dev_priv->pinned_bo, false); |
ttm_bo_unref(&dev_priv->pinned_bo); |
} |
|
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. |
*/ |
|
vmw_bo_pin(dev_priv->dummy_query_bo, true); |
dev_priv->dummy_query_bo_pinned = true; |
|
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_translate_guest_pointer - Prepare to translate a user-space buffer |
* handle to a valid SVGAGuestPtr |
* |
* @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 int vmw_translate_guest_ptr(struct vmw_private *dev_priv, |
struct vmw_sw_context *sw_context, |
SVGAGuestPtr *ptr, |
struct vmw_dma_buffer **vmw_bo_p) |
{ |
struct vmw_dma_buffer *vmw_bo = NULL; |
struct ttm_buffer_object *bo; |
uint32_t handle = ptr->gmrId; |
struct vmw_relocation *reloc; |
int ret; |
|
ret = vmw_user_dmabuf_lookup(sw_context->tfile, handle, &vmw_bo); |
if (unlikely(ret != 0)) { |
DRM_ERROR("Could not find or use GMR region.\n"); |
return -EINVAL; |
} |
bo = &vmw_bo->base; |
|
if (unlikely(sw_context->cur_reloc >= VMWGFX_MAX_RELOCATIONS)) { |
DRM_ERROR("Max number relocations per submission" |
" exceeded\n"); |
ret = -EINVAL; |
goto out_no_reloc; |
} |
|
reloc = &sw_context->relocs[sw_context->cur_reloc++]; |
reloc->location = ptr; |
|
ret = vmw_bo_to_validate_list(sw_context, bo, &reloc->index); |
if (unlikely(ret != 0)) |
goto out_no_reloc; |
|
*vmw_bo_p = vmw_bo; |
return 0; |
|
out_no_reloc: |
vmw_dmabuf_unreference(&vmw_bo); |
vmw_bo_p = NULL; |
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) |
{ |
struct vmw_dma_buffer *vmw_bo; |
struct vmw_query_cmd { |
SVGA3dCmdHeader header; |
SVGA3dCmdEndQuery q; |
} *cmd; |
int ret; |
|
cmd = container_of(header, struct vmw_query_cmd, header); |
ret = vmw_cmd_cid_check(dev_priv, sw_context, header); |
if (unlikely(ret != 0)) |
return ret; |
|
ret = vmw_translate_guest_ptr(dev_priv, sw_context, |
&cmd->q.guestResult, |
&vmw_bo); |
if (unlikely(ret != 0)) |
return ret; |
|
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) |
{ |
struct vmw_dma_buffer *vmw_bo; |
struct vmw_query_cmd { |
SVGA3dCmdHeader header; |
SVGA3dCmdWaitForQuery q; |
} *cmd; |
int ret; |
|
cmd = container_of(header, struct vmw_query_cmd, header); |
ret = vmw_cmd_cid_check(dev_priv, sw_context, header); |
if (unlikely(ret != 0)) |
return ret; |
|
ret = vmw_translate_guest_ptr(dev_priv, sw_context, |
&cmd->q.guestResult, |
&vmw_bo); |
if (unlikely(ret != 0)) |
return ret; |
|
vmw_dmabuf_unreference(&vmw_bo); |
return 0; |
} |
|
static int vmw_cmd_dma(struct vmw_private *dev_priv, |
struct vmw_sw_context *sw_context, |
SVGA3dCmdHeader *header) |
{ |
struct vmw_dma_buffer *vmw_bo = NULL; |
struct vmw_surface *srf = NULL; |
struct vmw_dma_cmd { |
SVGA3dCmdHeader header; |
SVGA3dCmdSurfaceDMA dma; |
} *cmd; |
int ret; |
|
cmd = container_of(header, struct vmw_dma_cmd, header); |
ret = vmw_translate_guest_ptr(dev_priv, sw_context, |
&cmd->dma.guest.ptr, |
&vmw_bo); |
if (unlikely(ret != 0)) |
return ret; |
|
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 (unlikely(ret != -ERESTARTSYS)) |
DRM_ERROR("could not find surface for DMA.\n"); |
goto out_no_surface; |
} |
|
srf = vmw_res_to_srf(sw_context->res_cache[vmw_res_surface].res); |
|
// vmw_kms_cursor_snoop(srf, sw_context->tfile, &vmw_bo->base, header); |
|
out_no_surface: |
vmw_dmabuf_unreference(&vmw_bo); |
return ret; |
} |
|
static int vmw_cmd_draw(struct vmw_private *dev_priv, |
struct vmw_sw_context *sw_context, |
SVGA3dCmdHeader *header) |
{ |
struct vmw_draw_cmd { |
SVGA3dCmdHeader header; |
SVGA3dCmdDrawPrimitives body; |
} *cmd; |
SVGA3dVertexDecl *decl = (SVGA3dVertexDecl *)( |
(unsigned long)header + sizeof(*cmd)); |
SVGA3dPrimitiveRange *range; |
uint32_t i; |
uint32_t maxnum; |
int ret; |
|
ret = vmw_cmd_cid_check(dev_priv, sw_context, header); |
if (unlikely(ret != 0)) |
return ret; |
|
cmd = container_of(header, struct vmw_draw_cmd, header); |
maxnum = (header->size - sizeof(cmd->body)) / sizeof(*decl); |
|
if (unlikely(cmd->body.numVertexDecls > maxnum)) { |
DRM_ERROR("Illegal number of vertex declarations.\n"); |
return -EINVAL; |
} |
|
for (i = 0; i < cmd->body.numVertexDecls; ++i, ++decl) { |
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; |
} |
|
maxnum = (header->size - sizeof(cmd->body) - |
cmd->body.numVertexDecls * sizeof(*decl)) / sizeof(*range); |
if (unlikely(cmd->body.numRanges > maxnum)) { |
DRM_ERROR("Illegal number of index ranges.\n"); |
return -EINVAL; |
} |
|
range = (SVGA3dPrimitiveRange *) decl; |
for (i = 0; i < cmd->body.numRanges; ++i, ++range) { |
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; |
} |
return 0; |
} |
|
|
static int vmw_cmd_tex_state(struct vmw_private *dev_priv, |
struct vmw_sw_context *sw_context, |
SVGA3dCmdHeader *header) |
{ |
struct vmw_tex_state_cmd { |
SVGA3dCmdHeader header; |
SVGA3dCmdSetTextureState state; |
}; |
|
SVGA3dTextureState *last_state = (SVGA3dTextureState *) |
((unsigned long) header + header->size + sizeof(header)); |
SVGA3dTextureState *cur_state = (SVGA3dTextureState *) |
((unsigned long) header + sizeof(struct vmw_tex_state_cmd)); |
int ret; |
|
ret = vmw_cmd_cid_check(dev_priv, sw_context, header); |
if (unlikely(ret != 0)) |
return ret; |
|
for (; cur_state < last_state; ++cur_state) { |
if (likely(cur_state->name != SVGA3D_TS_BIND_TEXTURE)) |
continue; |
|
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 0; |
} |
|
static int vmw_cmd_check_define_gmrfb(struct vmw_private *dev_priv, |
struct vmw_sw_context *sw_context, |
void *buf) |
{ |
struct vmw_dma_buffer *vmw_bo; |
int ret; |
|
struct { |
uint32_t header; |
SVGAFifoCmdDefineGMRFB body; |
} *cmd = buf; |
|
ret = vmw_translate_guest_ptr(dev_priv, sw_context, |
&cmd->body.ptr, |
&vmw_bo); |
if (unlikely(ret != 0)) |
return ret; |
|
vmw_dmabuf_unreference(&vmw_bo); |
|
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) |
{ |
uint32_t size_remaining = *size; |
uint32_t cmd_id; |
|
cmd_id = le32_to_cpu(((uint32_t *)buf)[0]); |
switch (cmd_id) { |
case SVGA_CMD_UPDATE: |
*size = sizeof(uint32_t) + sizeof(SVGAFifoCmdUpdate); |
break; |
case SVGA_CMD_DEFINE_GMRFB: |
*size = sizeof(uint32_t) + sizeof(SVGAFifoCmdDefineGMRFB); |
break; |
case SVGA_CMD_BLIT_GMRFB_TO_SCREEN: |
*size = sizeof(uint32_t) + sizeof(SVGAFifoCmdBlitGMRFBToScreen); |
break; |
case SVGA_CMD_BLIT_SCREEN_TO_GMRFB: |
*size = sizeof(uint32_t) + sizeof(SVGAFifoCmdBlitGMRFBToScreen); |
break; |
default: |
DRM_ERROR("Unsupported SVGA command: %u.\n", cmd_id); |
return -EINVAL; |
} |
|
if (*size > size_remaining) { |
DRM_ERROR("Invalid SVGA command (size mismatch):" |
" %u.\n", cmd_id); |
return -EINVAL; |
} |
|
if (unlikely(!sw_context->kernel)) { |
DRM_ERROR("Kernel only SVGA command: %u.\n", cmd_id); |
return -EPERM; |
} |
|
if (cmd_id == SVGA_CMD_DEFINE_GMRFB) |
return vmw_cmd_check_define_gmrfb(dev_priv, sw_context, buf); |
|
return 0; |
} |
|
typedef int (*vmw_cmd_func) (struct vmw_private *, |
struct vmw_sw_context *, |
SVGA3dCmdHeader *); |
|
#define VMW_CMD_DEF(cmd, func) \ |
[cmd - SVGA_3D_CMD_BASE] = func |
|
static vmw_cmd_func vmw_cmd_funcs[SVGA_3D_CMD_MAX] = { |
VMW_CMD_DEF(SVGA_3D_CMD_SURFACE_DEFINE, &vmw_cmd_invalid), |
VMW_CMD_DEF(SVGA_3D_CMD_SURFACE_DESTROY, &vmw_cmd_invalid), |
VMW_CMD_DEF(SVGA_3D_CMD_SURFACE_COPY, &vmw_cmd_surface_copy_check), |
VMW_CMD_DEF(SVGA_3D_CMD_SURFACE_STRETCHBLT, &vmw_cmd_stretch_blt_check), |
VMW_CMD_DEF(SVGA_3D_CMD_SURFACE_DMA, &vmw_cmd_dma), |
VMW_CMD_DEF(SVGA_3D_CMD_CONTEXT_DEFINE, &vmw_cmd_invalid), |
VMW_CMD_DEF(SVGA_3D_CMD_CONTEXT_DESTROY, &vmw_cmd_invalid), |
VMW_CMD_DEF(SVGA_3D_CMD_SETTRANSFORM, &vmw_cmd_cid_check), |
VMW_CMD_DEF(SVGA_3D_CMD_SETZRANGE, &vmw_cmd_cid_check), |
VMW_CMD_DEF(SVGA_3D_CMD_SETRENDERSTATE, &vmw_cmd_cid_check), |
VMW_CMD_DEF(SVGA_3D_CMD_SETRENDERTARGET, |
&vmw_cmd_set_render_target_check), |
VMW_CMD_DEF(SVGA_3D_CMD_SETTEXTURESTATE, &vmw_cmd_tex_state), |
VMW_CMD_DEF(SVGA_3D_CMD_SETMATERIAL, &vmw_cmd_cid_check), |
VMW_CMD_DEF(SVGA_3D_CMD_SETLIGHTDATA, &vmw_cmd_cid_check), |
VMW_CMD_DEF(SVGA_3D_CMD_SETLIGHTENABLED, &vmw_cmd_cid_check), |
VMW_CMD_DEF(SVGA_3D_CMD_SETVIEWPORT, &vmw_cmd_cid_check), |
VMW_CMD_DEF(SVGA_3D_CMD_SETCLIPPLANE, &vmw_cmd_cid_check), |
VMW_CMD_DEF(SVGA_3D_CMD_CLEAR, &vmw_cmd_cid_check), |
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_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_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_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, |
struct vmw_sw_context *sw_context, |
void *buf, uint32_t *size) |
{ |
uint32_t cmd_id; |
uint32_t size_remaining = *size; |
SVGA3dCmdHeader *header = (SVGA3dCmdHeader *) buf; |
int ret; |
|
cmd_id = le32_to_cpu(((uint32_t *)buf)[0]); |
/* Handle any none 3D commands */ |
if (unlikely(cmd_id < SVGA_CMD_MAX)) |
return vmw_cmd_check_not_3d(dev_priv, sw_context, buf, size); |
|
|
cmd_id = le32_to_cpu(header->id); |
*size = le32_to_cpu(header->size) + sizeof(SVGA3dCmdHeader); |
|
cmd_id -= SVGA_3D_CMD_BASE; |
if (unlikely(*size > size_remaining)) |
goto out_err; |
|
if (unlikely(cmd_id >= SVGA_3D_CMD_MAX - SVGA_3D_CMD_BASE)) |
goto out_err; |
|
ret = vmw_cmd_funcs[cmd_id](dev_priv, sw_context, header); |
if (unlikely(ret != 0)) |
goto out_err; |
|
return 0; |
out_err: |
DRM_ERROR("Illegal / Invalid SVGA3D command: %d\n", |
cmd_id + SVGA_3D_CMD_BASE); |
return -EINVAL; |
} |
|
static int vmw_cmd_check_all(struct vmw_private *dev_priv, |
struct vmw_sw_context *sw_context, |
void *buf, |
uint32_t size) |
{ |
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); |
if (unlikely(ret != 0)) |
return ret; |
buf = (void *)((unsigned long) buf + size); |
cur_size -= size; |
} |
|
if (unlikely(cur_size != 0)) { |
DRM_ERROR("Command verifier out of sync.\n"); |
return -EINVAL; |
} |
|
return 0; |
} |
|
static void vmw_free_relocations(struct vmw_sw_context *sw_context) |
{ |
sw_context->cur_reloc = 0; |
} |
|
static void vmw_apply_relocations(struct vmw_sw_context *sw_context) |
{ |
uint32_t i; |
struct vmw_relocation *reloc; |
struct ttm_validate_buffer *validate; |
struct ttm_buffer_object *bo; |
|
for (i = 0; i < sw_context->cur_reloc; ++i) { |
reloc = &sw_context->relocs[i]; |
validate = &sw_context->val_bufs[reloc->index].base; |
bo = validate->bo; |
switch (bo->mem.mem_type) { |
case TTM_PL_VRAM: |
reloc->location->offset += bo->offset; |
reloc->location->gmrId = SVGA_GMR_FRAMEBUFFER; |
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 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, |
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); |
|
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, |
struct ttm_buffer_object *bo) |
{ |
int ret; |
|
|
/* |
* Don't validate pinned buffers. |
*/ |
|
if (bo == dev_priv->pinned_bo || |
(bo == dev_priv->dummy_query_bo && |
dev_priv->dummy_query_bo_pinned)) |
return 0; |
|
/** |
* Put BO in VRAM if there is space, otherwise as a GMR. |
* If there is no space in VRAM and GMR ids are all used up, |
* start evicting GMRs to make room. If the DMA buffer can't be |
* used as a GMR, this will return -ENOMEM. |
*/ |
|
ret = ttm_bo_validate(bo, &vmw_vram_gmr_placement, true, false); |
if (likely(ret == 0 || ret == -ERESTARTSYS)) |
return ret; |
|
/** |
* If that failed, try VRAM again, this time evicting |
* previous contents. |
*/ |
|
DRM_INFO("Falling through to VRAM.\n"); |
ret = ttm_bo_validate(bo, &vmw_vram_placement, true, false); |
return ret; |
} |
|
|
static int vmw_validate_buffers(struct vmw_private *dev_priv, |
struct vmw_sw_context *sw_context) |
{ |
struct vmw_validate_buffer *entry; |
int ret; |
|
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; |
} |
return 0; |
} |
|
static int vmw_resize_cmd_bounce(struct vmw_sw_context *sw_context, |
uint32_t size) |
{ |
if (likely(sw_context->cmd_bounce_size >= size)) |
return 0; |
|
if (sw_context->cmd_bounce_size == 0) |
sw_context->cmd_bounce_size = VMWGFX_CMD_BOUNCE_INIT_SIZE; |
|
while (sw_context->cmd_bounce_size < size) { |
sw_context->cmd_bounce_size = |
PAGE_ALIGN(sw_context->cmd_bounce_size + |
(sw_context->cmd_bounce_size >> 1)); |
} |
|
if (sw_context->cmd_bounce != NULL) |
vfree(sw_context->cmd_bounce); |
|
sw_context->cmd_bounce = KernelAlloc(sw_context->cmd_bounce_size); |
|
if (sw_context->cmd_bounce == NULL) { |
DRM_ERROR("Failed to allocate command bounce buffer.\n"); |
sw_context->cmd_bounce_size = 0; |
return -ENOMEM; |
} |
|
return 0; |
} |
|
/** |
* vmw_execbuf_fence_commands - create and submit a command stream fence |
* |
* Creates a fence object and submits a command stream marker. |
* If this fails for some reason, We sync the fifo and return NULL. |
* It is then safe to fence buffers with a NULL pointer. |
* |
* If @p_handle is not NULL @file_priv must also not be NULL. Creates |
* a userspace handle if @p_handle is not NULL, otherwise not. |
*/ |
|
int vmw_execbuf_fence_commands(struct drm_file *file_priv, |
struct vmw_private *dev_priv, |
struct vmw_fence_obj **p_fence, |
uint32_t *p_handle) |
{ |
uint32_t sequence; |
int ret; |
bool synced = false; |
|
/* p_handle implies file_priv. */ |
BUG_ON(p_handle != NULL && file_priv == NULL); |
|
ret = vmw_fifo_send_fence(dev_priv, &sequence); |
if (unlikely(ret != 0)) { |
DRM_ERROR("Fence submission error. Syncing.\n"); |
synced = true; |
} |
|
if (p_handle != NULL) |
ret = vmw_user_fence_create(file_priv, dev_priv->fman, |
sequence, |
DRM_VMW_FENCE_FLAG_EXEC, |
p_fence, p_handle); |
else |
ret = vmw_fence_create(dev_priv->fman, sequence, |
DRM_VMW_FENCE_FLAG_EXEC, |
p_fence); |
|
if (unlikely(ret != 0 && !synced)) { |
(void) vmw_fallback_wait(dev_priv, false, false, |
sequence, false, |
VMW_FENCE_WAIT_TIMEOUT); |
*p_fence = NULL; |
} |
|
return 0; |
} |
|
|
/** |
* vmw_execbuf_copy_fence_user - copy fence object information to |
* user-space. |
* |
* @dev_priv: Pointer to a vmw_private struct. |
* @vmw_fp: Pointer to the struct vmw_fpriv representing the calling file. |
* @ret: Return value from fence object creation. |
* @user_fence_rep: User space address of a struct drm_vmw_fence_rep to |
* which the information should be copied. |
* @fence: Pointer to the fenc object. |
* @fence_handle: User-space fence handle. |
* |
* This function copies fence information to user-space. If copying fails, |
* The user-space struct drm_vmw_fence_rep::error member is hopefully |
* left untouched, and if it's preloaded with an -EFAULT by user-space, |
* the error will hopefully be detected. |
* Also if copying fails, user-space will be unable to signal the fence |
* object so we wait for it immediately, and then unreference the |
* user-space reference. |
*/ |
void |
vmw_execbuf_copy_fence_user(struct vmw_private *dev_priv, |
struct vmw_fpriv *vmw_fp, |
int ret, |
struct drm_vmw_fence_rep __user *user_fence_rep, |
struct vmw_fence_obj *fence, |
uint32_t fence_handle) |
{ |
struct drm_vmw_fence_rep fence_rep; |
|
if (user_fence_rep == NULL) |
return; |
|
memset(&fence_rep, 0, sizeof(fence_rep)); |
|
fence_rep.error = ret; |
if (ret == 0) { |
BUG_ON(fence == NULL); |
|
fence_rep.handle = fence_handle; |
fence_rep.seqno = fence->seqno; |
vmw_update_seqno(dev_priv, &dev_priv->fifo); |
fence_rep.passed_seqno = dev_priv->last_read_seqno; |
} |
|
/* |
* copy_to_user errors will be detected by user space not |
* seeing fence_rep::error filled in. Typically |
* user-space would have pre-set that member to -EFAULT. |
*/ |
// ret = copy_to_user(user_fence_rep, &fence_rep, |
// sizeof(fence_rep)); |
|
/* |
* User-space lost the fence object. We need to sync |
* and unreference the handle. |
*/ |
if (unlikely(ret != 0) && (fence_rep.error == 0)) { |
ttm_ref_object_base_unref(vmw_fp->tfile, |
fence_handle, TTM_REF_USAGE); |
DRM_ERROR("Fence copy error. Syncing.\n"); |
(void) vmw_fence_obj_wait(fence, fence->signal_mask, |
false, false, |
VMW_FENCE_WAIT_TIMEOUT); |
} |
} |
|
int vmw_execbuf_process(struct drm_file *file_priv, |
struct vmw_private *dev_priv, |
void __user *user_commands, |
void *kernel_commands, |
uint32_t command_size, |
uint64_t throttle_us, |
struct drm_vmw_fence_rep __user *user_fence_rep, |
struct vmw_fence_obj **out_fence) |
{ |
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; |
struct ww_acquire_ctx ticket; |
uint32_t handle; |
void *cmd; |
int ret; |
|
ret = mutex_lock_interruptible(&dev_priv->cmdbuf_mutex); |
if (unlikely(ret != 0)) |
return -ERESTARTSYS; |
|
/* |
if (kernel_commands == NULL) { |
sw_context->kernel = false; |
|
ret = vmw_resize_cmd_bounce(sw_context, command_size); |
if (unlikely(ret != 0)) |
goto out_unlock; |
|
|
ret = copy_from_user(sw_context->cmd_bounce, |
user_commands, command_size); |
|
if (unlikely(ret != 0)) { |
ret = -EFAULT; |
DRM_ERROR("Failed copying commands.\n"); |
goto out_unlock; |
} |
kernel_commands = sw_context->cmd_bounce; |
} else */ |
sw_context->kernel = true; |
|
sw_context->tfile = vmw_fpriv(file_priv)->tfile; |
sw_context->cur_reloc = 0; |
sw_context->cur_val_buf = 0; |
sw_context->fence_flags = 0; |
INIT_LIST_HEAD(&sw_context->resource_list); |
sw_context->cur_query_bo = dev_priv->pinned_bo; |
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(&ticket, &sw_context->validate_nodes); |
if (unlikely(ret != 0)) |
goto out_err; |
|
ret = vmw_validate_buffers(dev_priv, sw_context); |
if (unlikely(ret != 0)) |
goto out_err; |
|
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_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_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); |
ret = vmw_execbuf_fence_commands(file_priv, dev_priv, |
&fence, |
(user_fence_rep) ? &handle : NULL); |
/* |
* This error is harmless, because if fence submission fails, |
* vmw_fifo_send_fence will sync. The error will be propagated to |
* user-space in @fence_rep |
*/ |
|
if (ret != 0) |
DRM_ERROR("Fence submission error. Syncing.\n"); |
|
vmw_resource_list_unreserve(&sw_context->resource_list, false); |
ttm_eu_fence_buffer_objects(&ticket, &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); |
|
/* Don't unreference when handing fence out */ |
if (unlikely(out_fence != NULL)) { |
*out_fence = fence; |
fence = NULL; |
} else if (likely(fence != NULL)) { |
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); |
ttm_eu_backoff_reservation(&ticket, &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_unpin_panic - Idle the fifo and unpin the query buffer. |
* |
* @dev_priv: The device private structure. |
* |
* This function is called to idle the fifo and unpin the query buffer |
* if the normal way to do this hits an error, which should typically be |
* extremely rare. |
*/ |
static void vmw_execbuf_unpin_panic(struct vmw_private *dev_priv) |
{ |
DRM_ERROR("Can't unpin query buffer. Trying to recover.\n"); |
|
(void) vmw_fallback_wait(dev_priv, false, true, 0, false, 10*HZ); |
vmw_bo_pin(dev_priv->pinned_bo, false); |
vmw_bo_pin(dev_priv->dummy_query_bo, false); |
dev_priv->dummy_query_bo_pinned = false; |
} |
|
|
/** |
* __vmw_execbuf_release_pinned_bo - Flush queries and unpin the pinned |
* query bo. |
* |
* @dev_priv: The device private structure. |
* @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 |
* 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. |
* |
* 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, |
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 *lfence = NULL; |
struct ww_acquire_ctx ticket; |
|
if (dev_priv->pinned_bo == NULL) |
goto out_unlock; |
|
INIT_LIST_HEAD(&validate_list); |
|
pinned_val.bo = ttm_bo_reference(dev_priv->pinned_bo); |
list_add_tail(&pinned_val.head, &validate_list); |
|
query_val.bo = ttm_bo_reference(dev_priv->dummy_query_bo); |
list_add_tail(&query_val.head, &validate_list); |
|
do { |
ret = ttm_eu_reserve_buffers(&ticket, &validate_list); |
} while (ret == -ERESTARTSYS); |
|
if (unlikely(ret != 0)) { |
vmw_execbuf_unpin_panic(dev_priv); |
goto out_no_reserve; |
} |
|
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; |
|
if (fence == NULL) { |
(void) vmw_execbuf_fence_commands(NULL, dev_priv, &lfence, |
NULL); |
fence = lfence; |
} |
ttm_eu_fence_buffer_objects(&ticket, &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: |
return; |
|
out_no_emit: |
ttm_eu_backoff_reservation(&ticket, &validate_list); |
out_no_reserve: |
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); |
} |
|
|
int vmw_execbuf_ioctl(struct drm_device *dev, void *data, |
struct drm_file *file_priv) |
{ |
struct vmw_private *dev_priv = vmw_priv(dev); |
struct drm_vmw_execbuf_arg *arg = (struct drm_vmw_execbuf_arg *)data; |
// struct vmw_master *vmaster = vmw_master(file_priv->master); |
int ret; |
|
/* |
* This will allow us to extend the ioctl argument while |
* maintaining backwards compatibility: |
* We take different code paths depending on the value of |
* arg->version. |
*/ |
|
if (unlikely(arg->version != DRM_VMW_EXECBUF_VERSION)) { |
DRM_ERROR("Incorrect execbuf version.\n"); |
DRM_ERROR("You're running outdated experimental " |
"vmwgfx user-space drivers."); |
return -EINVAL; |
} |
|
// ret = ttm_read_lock(&vmaster->lock, true); |
if (unlikely(ret != 0)) |
return ret; |
|
ret = vmw_execbuf_process(file_priv, dev_priv, |
(void __user *)(unsigned long)arg->commands, |
NULL, arg->command_size, arg->throttle_us, |
(void __user *)(unsigned long)arg->fence_rep, |
NULL); |
|
if (unlikely(ret != 0)) |
goto out_unlock; |
|
// vmw_kms_cursor_post_execbuf(dev_priv); |
|
out_unlock: |
// ttm_read_unlock(&vmaster->lock); |
return ret; |
} |