/**************************************************************************
*
* Copyright © 2009-2012 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_resource_priv.h"
#include "ttm/ttm_placement.h"
struct vmw_user_context {
struct ttm_base_object base;
struct vmw_resource res;
struct vmw_ctx_binding_state cbs;
};
typedef int (*vmw_scrub_func)(struct vmw_ctx_bindinfo *);
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 int vmw_gb_context_create(struct vmw_resource *res);
static int vmw_gb_context_bind(struct vmw_resource *res,
struct ttm_validate_buffer *val_buf);
static int vmw_gb_context_unbind(struct vmw_resource *res,
bool readback,
struct ttm_validate_buffer *val_buf);
static int vmw_gb_context_destroy(struct vmw_resource *res);
static int vmw_context_scrub_shader(struct vmw_ctx_bindinfo *bi);
static int vmw_context_scrub_render_target(struct vmw_ctx_bindinfo *bi);
static int vmw_context_scrub_texture(struct vmw_ctx_bindinfo *bi);
static void vmw_context_binding_state_kill(struct vmw_ctx_binding_state *cbs);
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
};
static const struct vmw_res_func vmw_gb_context_func = {
.res_type = vmw_res_context,
.needs_backup = true,
.may_evict = true,
.type_name = "guest backed contexts",
.backup_placement = &vmw_mob_placement,
.create = vmw_gb_context_create,
.destroy = vmw_gb_context_destroy,
.bind = vmw_gb_context_bind,
.unbind = vmw_gb_context_unbind
};
static const vmw_scrub_func vmw_scrub_funcs[vmw_ctx_binding_max] = {
[vmw_ctx_binding_shader] = vmw_context_scrub_shader,
[vmw_ctx_binding_rt] = vmw_context_scrub_render_target,
[vmw_ctx_binding_tex] = vmw_context_scrub_texture };
/**
* Context management:
*/
static void vmw_hw_context_destroy(struct vmw_resource *res)
{
struct vmw_private *dev_priv = res->dev_priv;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdDestroyContext body;
} *cmd;
if (res->func->destroy == vmw_gb_context_destroy) {
mutex_lock(&dev_priv->cmdbuf_mutex);
(void) vmw_gb_context_destroy(res);
if (dev_priv->pinned_bo != NULL &&
!dev_priv->query_cid_valid)
__vmw_execbuf_release_pinned_bo(dev_priv, NULL);
mutex_unlock(&dev_priv->cmdbuf_mutex);
return;
}
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 "
"destruction.\n");
return;
}
cmd->header.id = cpu_to_le32(SVGA_3D_CMD_CONTEXT_DESTROY);
cmd->header.size = cpu_to_le32(sizeof(cmd->body));
cmd->body.cid = cpu_to_le32(res->id);
vmw_fifo_commit(dev_priv, sizeof(*cmd));
vmw_3d_resource_dec(dev_priv, false);
}
static int vmw_gb_context_init(struct vmw_private *dev_priv,
struct vmw_resource *res,
void (*res_free) (struct vmw_resource *res))
{
int ret;
struct vmw_user_context *uctx =
container_of(res, struct vmw_user_context, res);
ret = vmw_resource_init(dev_priv, res, true,
res_free, &vmw_gb_context_func);
res->backup_size = SVGA3D_CONTEXT_DATA_SIZE;
if (unlikely(ret != 0)) {
if (res_free)
res_free(res);
else
kfree(res);
return ret;
}
memset(&uctx
->cbs
, 0, sizeof(uctx
->cbs
)); INIT_LIST_HEAD(&uctx->cbs.list);
vmw_resource_activate(res, vmw_hw_context_destroy);
return 0;
}
static int vmw_context_init(struct vmw_private *dev_priv,
struct vmw_resource *res,
void (*res_free) (struct vmw_resource *res))
{
int ret;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdDefineContext body;
} *cmd;
if (dev_priv->has_mob)
return vmw_gb_context_init(dev_priv, res, res_free);
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");
goto out_early;
}
if (unlikely(res->id >= SVGA3D_MAX_CONTEXT_IDS)) {
DRM_ERROR("Out of hw context ids.\n");
vmw_resource_unreference(&res);
return -ENOMEM;
}
cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
if (unlikely(cmd == NULL)) {
DRM_ERROR("Fifo reserve failed.\n");
vmw_resource_unreference(&res);
return -ENOMEM;
}
cmd->header.id = cpu_to_le32(SVGA_3D_CMD_CONTEXT_DEFINE);
cmd->header.size = cpu_to_le32(sizeof(cmd->body));
cmd->body.cid = cpu_to_le32(res->id);
vmw_fifo_commit(dev_priv, sizeof(*cmd));
(void) vmw_3d_resource_inc(dev_priv, false);
vmw_resource_activate(res, vmw_hw_context_destroy);
return 0;
out_early:
if (res_free == NULL)
kfree(res);
else
res_free(res);
return ret;
}
struct vmw_resource *vmw_context_alloc(struct vmw_private *dev_priv)
{
struct vmw_resource *res = kmalloc(sizeof(*res), GFP_KERNEL);
int ret;
if (unlikely(res == NULL))
return NULL;
ret = vmw_context_init(dev_priv, res, NULL);
return (ret == 0) ? res : NULL;
}
static int vmw_gb_context_create(struct vmw_resource *res)
{
struct vmw_private *dev_priv = res->dev_priv;
int ret;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdDefineGBContext body;
} *cmd;
if (likely(res->id != -1))
return 0;
ret = vmw_resource_alloc_id(res);
if (unlikely(ret != 0)) {
DRM_ERROR("Failed to allocate a context id.\n");
goto out_no_id;
}
if (unlikely(res->id >= VMWGFX_NUM_GB_CONTEXT)) {
ret = -EBUSY;
goto out_no_fifo;
}
cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
if (unlikely(cmd == NULL)) {
DRM_ERROR("Failed reserving FIFO space for context "
"creation.\n");
ret = -ENOMEM;
goto out_no_fifo;
}
cmd->header.id = SVGA_3D_CMD_DEFINE_GB_CONTEXT;
cmd->header.size = sizeof(cmd->body);
cmd->body.cid = res->id;
vmw_fifo_commit(dev_priv, sizeof(*cmd));
(void) vmw_3d_resource_inc(dev_priv, false);
return 0;
out_no_fifo:
vmw_resource_release_id(res);
out_no_id:
return ret;
}
static int vmw_gb_context_bind(struct vmw_resource *res,
struct ttm_validate_buffer *val_buf)
{
struct vmw_private *dev_priv = res->dev_priv;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdBindGBContext body;
} *cmd;
struct ttm_buffer_object *bo = val_buf->bo;
BUG_ON(bo->mem.mem_type != VMW_PL_MOB);
cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
if (unlikely(cmd == NULL)) {
DRM_ERROR("Failed reserving FIFO space for context "
"binding.\n");
return -ENOMEM;
}
cmd->header.id = SVGA_3D_CMD_BIND_GB_CONTEXT;
cmd->header.size = sizeof(cmd->body);
cmd->body.cid = res->id;
cmd->body.mobid = bo->mem.start;
cmd->body.validContents = res->backup_dirty;
res->backup_dirty = false;
vmw_fifo_commit(dev_priv, sizeof(*cmd));
return 0;
}
static int vmw_gb_context_unbind(struct vmw_resource *res,
bool readback,
struct ttm_validate_buffer *val_buf)
{
struct vmw_private *dev_priv = res->dev_priv;
struct ttm_buffer_object *bo = val_buf->bo;
struct vmw_fence_obj *fence;
struct vmw_user_context *uctx =
container_of(res, struct vmw_user_context, res);
struct {
SVGA3dCmdHeader header;
SVGA3dCmdReadbackGBContext body;
} *cmd1;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdBindGBContext body;
} *cmd2;
uint32_t submit_size;
uint8_t *cmd;
BUG_ON(bo->mem.mem_type != VMW_PL_MOB);
mutex_lock(&dev_priv->binding_mutex);
vmw_context_binding_state_kill(&uctx->cbs);
submit_size = sizeof(*cmd2) + (readback ? sizeof(*cmd1) : 0);
cmd = vmw_fifo_reserve(dev_priv, submit_size);
if (unlikely(cmd == NULL)) {
DRM_ERROR("Failed reserving FIFO space for context "
"unbinding.\n");
mutex_unlock(&dev_priv->binding_mutex);
return -ENOMEM;
}
cmd2 = (void *) cmd;
if (readback) {
cmd1 = (void *) cmd;
cmd1->header.id = SVGA_3D_CMD_READBACK_GB_CONTEXT;
cmd1->header.size = sizeof(cmd1->body);
cmd1->body.cid = res->id;
cmd2 = (void *) (&cmd1[1]);
}
cmd2->header.id = SVGA_3D_CMD_BIND_GB_CONTEXT;
cmd2->header.size = sizeof(cmd2->body);
cmd2->body.cid = res->id;
cmd2->body.mobid = SVGA3D_INVALID_ID;
vmw_fifo_commit(dev_priv, submit_size);
mutex_unlock(&dev_priv->binding_mutex);
/*
* Create a fence object and fence the backup buffer.
*/
(void) vmw_execbuf_fence_commands(NULL, dev_priv,
&fence, NULL);
vmw_fence_single_bo(bo, fence);
if (likely(fence != NULL))
vmw_fence_obj_unreference(&fence);
return 0;
}
static int vmw_gb_context_destroy(struct vmw_resource *res)
{
struct vmw_private *dev_priv = res->dev_priv;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdDestroyGBContext body;
} *cmd;
struct vmw_user_context *uctx =
container_of(res, struct vmw_user_context, res);
BUG_ON(!list_empty(&uctx->cbs.list));
if (likely(res->id == -1))
return 0;
cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
if (unlikely(cmd == NULL)) {
DRM_ERROR("Failed reserving FIFO space for context "
"destruction.\n");
return -ENOMEM;
}
cmd->header.id = SVGA_3D_CMD_DESTROY_GB_CONTEXT;
cmd->header.size = sizeof(cmd->body);
cmd->body.cid = res->id;
vmw_fifo_commit(dev_priv, sizeof(*cmd));
if (dev_priv->query_cid == res->id)
dev_priv->query_cid_valid = false;
vmw_resource_release_id(res);
vmw_3d_resource_dec(dev_priv, false);
return 0;
}
/**
* 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 =
container_of(res, struct vmw_user_context, res);
struct vmw_private *dev_priv = res->dev_priv;
// ttm_base_object_kfree(ctx, base);
ttm_mem_global_free(vmw_mem_glob(dev_priv),
vmw_user_context_size);
}
/**
* This function is called when user space has no more references on the
* base object. It releases the base-object's reference on the resource object.
*/
static void vmw_user_context_base_release(struct ttm_base_object **p_base)
{
struct ttm_base_object *base = *p_base;
struct vmw_user_context *ctx =
container_of(base, struct vmw_user_context, base);
struct vmw_resource *res = &ctx->res;
*p_base = NULL;
vmw_resource_unreference(&res);
}
#if 0
int vmw_context_destroy_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_vmw_context_arg *arg = (struct drm_vmw_context_arg *)data;
struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
return ttm_ref_object_base_unref(tfile, arg->cid, TTM_REF_USAGE);
}
int vmw_context_define_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct vmw_private *dev_priv = vmw_priv(dev);
struct vmw_user_context *ctx;
struct vmw_resource *res;
struct vmw_resource *tmp;
struct drm_vmw_context_arg *arg = (struct drm_vmw_context_arg *)data;
struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
struct vmw_master *vmaster = vmw_master(file_priv->master);
int ret;
/*
* Approximate idr memory usage with 128 bytes. It will be limited
* by maximum number_of contexts anyway.
*/
if (unlikely(vmw_user_context_size == 0))
vmw_user_context_size = ttm_round_pot(sizeof(*ctx)) + 128;
ret = ttm_read_lock(&vmaster->lock, true);
if (unlikely(ret != 0))
return ret;
ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv),
vmw_user_context_size,
false, true);
if (unlikely(ret != 0)) {
if (ret != -ERESTARTSYS)
DRM_ERROR("Out of graphics memory for context"
" creation.\n");
goto out_unlock;
}
ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
if (unlikely(ctx == NULL)) {
ttm_mem_global_free(vmw_mem_glob(dev_priv),
vmw_user_context_size);
ret = -ENOMEM;
goto out_unlock;
}
res = &ctx->res;
ctx->base.shareable = false;
ctx->base.tfile = NULL;
/*
* From here on, the destructor takes over resource freeing.
*/
ret = vmw_context_init(dev_priv, res, vmw_user_context_free);
if (unlikely(ret != 0))
goto out_unlock;
tmp = vmw_resource_reference(&ctx->res);
ret = ttm_base_object_init(tfile, &ctx->base, false, VMW_RES_CONTEXT,
&vmw_user_context_base_release, NULL);
if (unlikely(ret != 0)) {
vmw_resource_unreference(&tmp);
goto out_err;
}
arg->cid = ctx->base.hash.key;
out_err:
vmw_resource_unreference(&res);
out_unlock:
ttm_read_unlock(&vmaster->lock);
return ret;
}
#endif
/**
* vmw_context_scrub_shader - scrub a shader binding from a context.
*
* @bi: single binding information.
*/
static int vmw_context_scrub_shader(struct vmw_ctx_bindinfo *bi)
{
struct vmw_private *dev_priv = bi->ctx->dev_priv;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdSetShader body;
} *cmd;
cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
if (unlikely(cmd == NULL)) {
DRM_ERROR("Failed reserving FIFO space for shader "
"unbinding.\n");
return -ENOMEM;
}
cmd->header.id = SVGA_3D_CMD_SET_SHADER;
cmd->header.size = sizeof(cmd->body);
cmd->body.cid = bi->ctx->id;
cmd->body.type = bi->i1.shader_type;
cmd->body.shid = SVGA3D_INVALID_ID;
vmw_fifo_commit(dev_priv, sizeof(*cmd));
return 0;
}
/**
* vmw_context_scrub_render_target - scrub a render target binding
* from a context.
*
* @bi: single binding information.
*/
static int vmw_context_scrub_render_target(struct vmw_ctx_bindinfo *bi)
{
struct vmw_private *dev_priv = bi->ctx->dev_priv;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdSetRenderTarget body;
} *cmd;
cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
if (unlikely(cmd == NULL)) {
DRM_ERROR("Failed reserving FIFO space for render target "
"unbinding.\n");
return -ENOMEM;
}
cmd->header.id = SVGA_3D_CMD_SETRENDERTARGET;
cmd->header.size = sizeof(cmd->body);
cmd->body.cid = bi->ctx->id;
cmd->body.type = bi->i1.rt_type;
cmd->body.target.sid = SVGA3D_INVALID_ID;
cmd->body.target.face = 0;
cmd->body.target.mipmap = 0;
vmw_fifo_commit(dev_priv, sizeof(*cmd));
return 0;
}
/**
* vmw_context_scrub_texture - scrub a texture binding from a context.
*
* @bi: single binding information.
*
* TODO: Possibly complement this function with a function that takes
* a list of texture bindings and combines them to a single command.
*/
static int vmw_context_scrub_texture(struct vmw_ctx_bindinfo *bi)
{
struct vmw_private *dev_priv = bi->ctx->dev_priv;
struct {
SVGA3dCmdHeader header;
struct {
SVGA3dCmdSetTextureState c;
SVGA3dTextureState s1;
} body;
} *cmd;
cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
if (unlikely(cmd == NULL)) {
DRM_ERROR("Failed reserving FIFO space for texture "
"unbinding.\n");
return -ENOMEM;
}
cmd->header.id = SVGA_3D_CMD_SETTEXTURESTATE;
cmd->header.size = sizeof(cmd->body);
cmd->body.c.cid = bi->ctx->id;
cmd->body.s1.stage = bi->i1.texture_stage;
cmd->body.s1.name = SVGA3D_TS_BIND_TEXTURE;
cmd->body.s1.value = (uint32) SVGA3D_INVALID_ID;
vmw_fifo_commit(dev_priv, sizeof(*cmd));
return 0;
}
/**
* vmw_context_binding_drop: Stop tracking a context binding
*
* @cb: Pointer to binding tracker storage.
*
* Stops tracking a context binding, and re-initializes its storage.
* Typically used when the context binding is replaced with a binding to
* another (or the same, for that matter) resource.
*/
static void vmw_context_binding_drop(struct vmw_ctx_binding *cb)
{
list_del(&cb->ctx_list);
if (!list_empty(&cb->res_list))
list_del(&cb->res_list);
cb->bi.ctx = NULL;
}
/**
* vmw_context_binding_add: Start tracking a context binding
*
* @cbs: Pointer to the context binding state tracker.
* @bi: Information about the binding to track.
*
* Performs basic checks on the binding to make sure arguments are within
* bounds and then starts tracking the binding in the context binding
* state structure @cbs.
*/
int vmw_context_binding_add(struct vmw_ctx_binding_state *cbs,
const struct vmw_ctx_bindinfo *bi)
{
struct vmw_ctx_binding *loc;
switch (bi->bt) {
case vmw_ctx_binding_rt:
if (unlikely((unsigned)bi->i1.rt_type >= SVGA3D_RT_MAX)) {
DRM_ERROR("Illegal render target type %u.\n",
(unsigned) bi->i1.rt_type);
return -EINVAL;
}
loc = &cbs->render_targets[bi->i1.rt_type];
break;
case vmw_ctx_binding_tex:
if (unlikely((unsigned)bi->i1.texture_stage >=
SVGA3D_NUM_TEXTURE_UNITS)) {
DRM_ERROR("Illegal texture/sampler unit %u.\n",
(unsigned) bi->i1.texture_stage);
return -EINVAL;
}
loc = &cbs->texture_units[bi->i1.texture_stage];
break;
case vmw_ctx_binding_shader:
if (unlikely((unsigned)bi->i1.shader_type >=
SVGA3D_SHADERTYPE_MAX)) {
DRM_ERROR("Illegal shader type %u.\n",
(unsigned) bi->i1.shader_type);
return -EINVAL;
}
loc = &cbs->shaders[bi->i1.shader_type];
break;
default:
BUG();
}
if (loc->bi.ctx != NULL)
vmw_context_binding_drop(loc);
loc->bi = *bi;
list_add_tail(&loc->ctx_list, &cbs->list);
INIT_LIST_HEAD(&loc->res_list);
return 0;
}
/**
* vmw_context_binding_transfer: Transfer a context binding tracking entry.
*
* @cbs: Pointer to the persistent context binding state tracker.
* @bi: Information about the binding to track.
*
*/
static void vmw_context_binding_transfer(struct vmw_ctx_binding_state *cbs,
const struct vmw_ctx_bindinfo *bi)
{
struct vmw_ctx_binding *loc;
switch (bi->bt) {
case vmw_ctx_binding_rt:
loc = &cbs->render_targets[bi->i1.rt_type];
break;
case vmw_ctx_binding_tex:
loc = &cbs->texture_units[bi->i1.texture_stage];
break;
case vmw_ctx_binding_shader:
loc = &cbs->shaders[bi->i1.shader_type];
break;
default:
BUG();
}
if (loc->bi.ctx != NULL)
vmw_context_binding_drop(loc);
loc->bi = *bi;
list_add_tail(&loc->ctx_list, &cbs->list);
if (bi->res != NULL)
list_add_tail(&loc->res_list, &bi->res->binding_head);
else
INIT_LIST_HEAD(&loc->res_list);
}
/**
* vmw_context_binding_kill - Kill a binding on the device
* and stop tracking it.
*
* @cb: Pointer to binding tracker storage.
*
* Emits FIFO commands to scrub a binding represented by @cb.
* Then stops tracking the binding and re-initializes its storage.
*/
static void vmw_context_binding_kill(struct vmw_ctx_binding *cb)
{
(void) vmw_scrub_funcs[cb->bi.bt](&cb->bi);
vmw_context_binding_drop(cb);
}
/**
* vmw_context_binding_state_kill - Kill all bindings associated with a
* struct vmw_ctx_binding state structure, and re-initialize the structure.
*
* @cbs: Pointer to the context binding state tracker.
*
* Emits commands to scrub all bindings associated with the
* context binding state tracker. Then re-initializes the whole structure.
*/
static void vmw_context_binding_state_kill(struct vmw_ctx_binding_state *cbs)
{
struct vmw_ctx_binding *entry, *next;
list_for_each_entry_safe(entry, next, &cbs->list, ctx_list)
vmw_context_binding_kill(entry);
}
/**
* vmw_context_binding_res_list_kill - Kill all bindings on a
* resource binding list
*
* @head: list head of resource binding list
*
* Kills all bindings associated with a specific resource. Typically
* called before the resource is destroyed.
*/
void vmw_context_binding_res_list_kill(struct list_head *head)
{
struct vmw_ctx_binding *entry, *next;
list_for_each_entry_safe(entry, next, head, res_list)
vmw_context_binding_kill(entry);
}
/**
* vmw_context_binding_state_transfer - Commit staged binding info
*
* @ctx: Pointer to context to commit the staged binding info to.
* @from: Staged binding info built during execbuf.
*
* Transfers binding info from a temporary structure to the persistent
* structure in the context. This can be done once commands
*/
void vmw_context_binding_state_transfer(struct vmw_resource *ctx,
struct vmw_ctx_binding_state *from)
{
struct vmw_user_context *uctx =
container_of(ctx, struct vmw_user_context, res);
struct vmw_ctx_binding *entry, *next;
list_for_each_entry_safe(entry, next, &from->list, ctx_list)
vmw_context_binding_transfer(&uctx->cbs, &entry->bi);
}