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OpenCloudOS-Kernel/drivers/gpu/drm/vmwgfx/vmwgfx_context.c

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// SPDX-License-Identifier: GPL-2.0 OR MIT
/**************************************************************************
*
* Copyright 2009-2015 VMware, Inc., Palo Alto, CA., USA
*
* 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 <drm/ttm/ttm_placement.h>
#include "vmwgfx_drv.h"
#include "vmwgfx_resource_priv.h"
#include "vmwgfx_binding.h"
struct vmw_user_context {
struct ttm_base_object base;
struct vmw_resource res;
struct vmw_ctx_binding_state *cbs;
struct vmw_cmdbuf_res_manager *man;
struct vmw_resource *cotables[SVGA_COTABLE_DX10_MAX];
spinlock_t cotable_lock;
struct vmw_buffer_object *dx_query_mob;
};
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_dx_context_create(struct vmw_resource *res);
static int vmw_dx_context_bind(struct vmw_resource *res,
struct ttm_validate_buffer *val_buf);
static int vmw_dx_context_unbind(struct vmw_resource *res,
bool readback,
struct ttm_validate_buffer *val_buf);
static int vmw_dx_context_destroy(struct vmw_resource *res);
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 struct vmw_res_func vmw_dx_context_func = {
.res_type = vmw_res_dx_context,
.needs_backup = true,
.may_evict = true,
.type_name = "dx contexts",
.backup_placement = &vmw_mob_placement,
.create = vmw_dx_context_create,
.destroy = vmw_dx_context_destroy,
.bind = vmw_dx_context_bind,
.unbind = vmw_dx_context_unbind
};
/**
* Context management:
*/
static void vmw_context_cotables_unref(struct vmw_user_context *uctx)
{
struct vmw_resource *res;
int i;
for (i = 0; i < SVGA_COTABLE_DX10_MAX; ++i) {
spin_lock(&uctx->cotable_lock);
res = uctx->cotables[i];
uctx->cotables[i] = NULL;
spin_unlock(&uctx->cotable_lock);
if (res)
vmw_resource_unreference(&res);
}
}
static void vmw_hw_context_destroy(struct vmw_resource *res)
{
struct vmw_user_context *uctx =
container_of(res, struct vmw_user_context, res);
struct vmw_private *dev_priv = res->dev_priv;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdDestroyContext body;
} *cmd;
if (res->func->destroy == vmw_gb_context_destroy ||
res->func->destroy == vmw_dx_context_destroy) {
mutex_lock(&dev_priv->cmdbuf_mutex);
vmw_cmdbuf_res_man_destroy(uctx->man);
mutex_lock(&dev_priv->binding_mutex);
vmw_binding_state_kill(uctx->cbs);
(void) res->func->destroy(res);
mutex_unlock(&dev_priv->binding_mutex);
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);
vmw_context_cotables_unref(uctx);
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 = SVGA_3D_CMD_CONTEXT_DESTROY;
cmd->header.size = sizeof(cmd->body);
cmd->body.cid = res->id;
vmw_fifo_commit(dev_priv, sizeof(*cmd));
vmw_fifo_resource_dec(dev_priv);
}
static int vmw_gb_context_init(struct vmw_private *dev_priv,
bool dx,
struct vmw_resource *res,
void (*res_free)(struct vmw_resource *res))
{
int ret, i;
struct vmw_user_context *uctx =
container_of(res, struct vmw_user_context, res);
res->backup_size = (dx ? sizeof(SVGADXContextMobFormat) :
SVGA3D_CONTEXT_DATA_SIZE);
ret = vmw_resource_init(dev_priv, res, true,
res_free,
dx ? &vmw_dx_context_func :
&vmw_gb_context_func);
if (unlikely(ret != 0))
goto out_err;
if (dev_priv->has_mob) {
uctx->man = vmw_cmdbuf_res_man_create(dev_priv);
if (IS_ERR(uctx->man)) {
ret = PTR_ERR(uctx->man);
uctx->man = NULL;
goto out_err;
}
}
uctx->cbs = vmw_binding_state_alloc(dev_priv);
if (IS_ERR(uctx->cbs)) {
ret = PTR_ERR(uctx->cbs);
goto out_err;
}
spin_lock_init(&uctx->cotable_lock);
if (dx) {
for (i = 0; i < SVGA_COTABLE_DX10_MAX; ++i) {
uctx->cotables[i] = vmw_cotable_alloc(dev_priv,
&uctx->res, i);
if (unlikely(IS_ERR(uctx->cotables[i]))) {
ret = PTR_ERR(uctx->cotables[i]);
goto out_cotables;
}
}
}
vmw_resource_activate(res, vmw_hw_context_destroy);
return 0;
out_cotables:
vmw_context_cotables_unref(uctx);
out_err:
if (res_free)
res_free(res);
else
kfree(res);
return ret;
}
static int vmw_context_init(struct vmw_private *dev_priv,
struct vmw_resource *res,
void (*res_free)(struct vmw_resource *res),
bool dx)
{
int ret;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdDefineContext body;
} *cmd;
if (dev_priv->has_mob)
return vmw_gb_context_init(dev_priv, dx, 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 = SVGA_3D_CMD_CONTEXT_DEFINE;
cmd->header.size = sizeof(cmd->body);
cmd->body.cid = res->id;
vmw_fifo_commit(dev_priv, sizeof(*cmd));
vmw_fifo_resource_inc(dev_priv);
vmw_resource_activate(res, vmw_hw_context_destroy);
return 0;
out_early:
if (res_free == NULL)
kfree(res);
else
res_free(res);
return ret;
}
/*
* GB context.
*/
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));
vmw_fifo_resource_inc(dev_priv);
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_binding_state_scrub(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_bo_fence_single(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;
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_fifo_resource_dec(dev_priv);
return 0;
}
/*
* DX context.
*/
static int vmw_dx_context_create(struct vmw_resource *res)
{
struct vmw_private *dev_priv = res->dev_priv;
int ret;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdDXDefineContext 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_DXCONTEXT)) {
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_DX_DEFINE_CONTEXT;
cmd->header.size = sizeof(cmd->body);
cmd->body.cid = res->id;
vmw_fifo_commit(dev_priv, sizeof(*cmd));
vmw_fifo_resource_inc(dev_priv);
return 0;
out_no_fifo:
vmw_resource_release_id(res);
out_no_id:
return ret;
}
static int vmw_dx_context_bind(struct vmw_resource *res,
struct ttm_validate_buffer *val_buf)
{
struct vmw_private *dev_priv = res->dev_priv;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdDXBindContext 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_DX_BIND_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;
}
/**
* vmw_dx_context_scrub_cotables - Scrub all bindings and
* cotables from a context
*
* @ctx: Pointer to the context resource
* @readback: Whether to save the otable contents on scrubbing.
*
* COtables must be unbound before their context, but unbinding requires
* the backup buffer being reserved, whereas scrubbing does not.
* This function scrubs all cotables of a context, potentially reading back
* the contents into their backup buffers. However, scrubbing cotables
* also makes the device context invalid, so scrub all bindings first so
* that doesn't have to be done later with an invalid context.
*/
void vmw_dx_context_scrub_cotables(struct vmw_resource *ctx,
bool readback)
{
struct vmw_user_context *uctx =
container_of(ctx, struct vmw_user_context, res);
int i;
vmw_binding_state_scrub(uctx->cbs);
for (i = 0; i < SVGA_COTABLE_DX10_MAX; ++i) {
struct vmw_resource *res;
/* Avoid racing with ongoing cotable destruction. */
spin_lock(&uctx->cotable_lock);
res = uctx->cotables[vmw_cotable_scrub_order[i]];
if (res)
res = vmw_resource_reference_unless_doomed(res);
spin_unlock(&uctx->cotable_lock);
if (!res)
continue;
WARN_ON(vmw_cotable_scrub(res, readback));
vmw_resource_unreference(&res);
}
}
static int vmw_dx_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;
SVGA3dCmdDXReadbackContext body;
} *cmd1;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdDXBindContext 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_dx_context_scrub_cotables(res, readback);
if (uctx->dx_query_mob && uctx->dx_query_mob->dx_query_ctx &&
readback) {
WARN_ON(uctx->dx_query_mob->dx_query_ctx != res);
if (vmw_query_readback_all(uctx->dx_query_mob))
DRM_ERROR("Failed to read back query states\n");
}
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_DX_READBACK_CONTEXT;
cmd1->header.size = sizeof(cmd1->body);
cmd1->body.cid = res->id;
cmd2 = (void *) (&cmd1[1]);
}
cmd2->header.id = SVGA_3D_CMD_DX_BIND_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_bo_fence_single(bo, fence);
if (likely(fence != NULL))
vmw_fence_obj_unreference(&fence);
return 0;
}
static int vmw_dx_context_destroy(struct vmw_resource *res)
{
struct vmw_private *dev_priv = res->dev_priv;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdDXDestroyContext body;
} *cmd;
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_DX_DESTROY_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_fifo_resource_dec(dev_priv);
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;
if (ctx->cbs)
vmw_binding_state_free(ctx->cbs);
(void) vmw_context_bind_dx_query(res, NULL);
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);
}
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);
}
static int vmw_context_define(struct drm_device *dev, void *data,
struct drm_file *file_priv, bool dx)
{
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 ttm_operation_ctx ttm_opt_ctx = {
.interruptible = true,
.no_wait_gpu = false
};
int ret;
if (!dev_priv->has_dx && dx) {
DRM_ERROR("DX contexts not supported by device.\n");
return -EINVAL;
}
/*
* 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 +
((dev_priv->has_mob) ? vmw_cmdbuf_res_man_size() : 0);
ret = ttm_read_lock(&dev_priv->reservation_sem, true);
if (unlikely(ret != 0))
return ret;
ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv),
vmw_user_context_size,
&ttm_opt_ctx);
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)) {
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, dx);
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(&dev_priv->reservation_sem);
return ret;
}
int vmw_context_define_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
return vmw_context_define(dev, data, file_priv, false);
}
int vmw_extended_context_define_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
union drm_vmw_extended_context_arg *arg = (typeof(arg)) data;
struct drm_vmw_context_arg *rep = &arg->rep;
switch (arg->req) {
case drm_vmw_context_legacy:
return vmw_context_define(dev, rep, file_priv, false);
case drm_vmw_context_dx:
return vmw_context_define(dev, rep, file_priv, true);
default:
break;
}
return -EINVAL;
}
/**
* vmw_context_binding_list - Return a list of context bindings
*
* @ctx: The context resource
*
* Returns the current list of bindings of the given context. Note that
* this list becomes stale as soon as the dev_priv::binding_mutex is unlocked.
*/
struct list_head *vmw_context_binding_list(struct vmw_resource *ctx)
{
struct vmw_user_context *uctx =
container_of(ctx, struct vmw_user_context, res);
return vmw_binding_state_list(uctx->cbs);
}
struct vmw_cmdbuf_res_manager *vmw_context_res_man(struct vmw_resource *ctx)
{
return container_of(ctx, struct vmw_user_context, res)->man;
}
struct vmw_resource *vmw_context_cotable(struct vmw_resource *ctx,
SVGACOTableType cotable_type)
{
if (cotable_type >= SVGA_COTABLE_DX10_MAX)
return ERR_PTR(-EINVAL);
return vmw_resource_reference
(container_of(ctx, struct vmw_user_context, res)->
cotables[cotable_type]);
}
/**
* vmw_context_binding_state -
* Return a pointer to a context binding state structure
*
* @ctx: The context resource
*
* Returns the current state of bindings of the given context. Note that
* this state becomes stale as soon as the dev_priv::binding_mutex is unlocked.
*/
struct vmw_ctx_binding_state *
vmw_context_binding_state(struct vmw_resource *ctx)
{
return container_of(ctx, struct vmw_user_context, res)->cbs;
}
/**
* vmw_context_bind_dx_query -
* Sets query MOB for the context. If @mob is NULL, then this function will
* remove the association between the MOB and the context. This function
* assumes the binding_mutex is held.
*
* @ctx_res: The context resource
* @mob: a reference to the query MOB
*
* Returns -EINVAL if a MOB has already been set and does not match the one
* specified in the parameter. 0 otherwise.
*/
int vmw_context_bind_dx_query(struct vmw_resource *ctx_res,
struct vmw_buffer_object *mob)
{
struct vmw_user_context *uctx =
container_of(ctx_res, struct vmw_user_context, res);
if (mob == NULL) {
if (uctx->dx_query_mob) {
uctx->dx_query_mob->dx_query_ctx = NULL;
vmw_bo_unreference(&uctx->dx_query_mob);
uctx->dx_query_mob = NULL;
}
return 0;
}
/* Can only have one MOB per context for queries */
if (uctx->dx_query_mob && uctx->dx_query_mob != mob)
return -EINVAL;
mob->dx_query_ctx = ctx_res;
if (!uctx->dx_query_mob)
uctx->dx_query_mob = vmw_bo_reference(mob);
return 0;
}
/**
* vmw_context_get_dx_query_mob - Returns non-counted reference to DX query mob
*
* @ctx_res: The context resource
*/
struct vmw_buffer_object *
vmw_context_get_dx_query_mob(struct vmw_resource *ctx_res)
{
struct vmw_user_context *uctx =
container_of(ctx_res, struct vmw_user_context, res);
return uctx->dx_query_mob;
}
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