Quelle vmwgfx_streamoutput.c
Sprache: C
// SPDX-License-Identifier: GPL-2.0 OR MIT
/**************************************************************************
*
* Copyright © 2018 - 2023 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_binding.h"
#include "vmwgfx_bo.h"
#include "vmwgfx_drv.h"
#include "vmwgfx_resource_priv.h"
#include <drm/ttm/ttm_placement.h>
/**
* struct vmw_dx_streamoutput - Streamoutput resource metadata .
* @ res : Base resource struct .
* @ ctx : Non - refcounted context to which @ res belong .
* @ cotable : Refcounted cotable holding this Streamoutput .
* @ cotable_head : List head for cotable - so_res list .
* @ id : User - space provided identifier .
* @ size : User - space provided mob size .
* @ committed : Whether streamoutput is actually created or pending creation .
*/
struct vmw_dx_streamoutput {
struct vmw_resource res;
struct vmw_resource *ctx;
struct vmw_resource *cotable;
struct list_head cotable_head;
u32 id;
u32 size;
bool committed;
};
static int vmw_dx_streamoutput_create(struct vmw_resource *res);
static int vmw_dx_streamoutput_bind(struct vmw_resource *res,
struct ttm_validate_buffer *val_buf);
static int vmw_dx_streamoutput_unbind(struct vmw_resource *res, bool readback,
struct ttm_validate_buffer *val_buf);
static void vmw_dx_streamoutput_commit_notify(struct vmw_resource *res,
enum vmw_cmdbuf_res_state state);
static const struct vmw_res_func vmw_dx_streamoutput_func = {
.res_type = vmw_res_streamoutput,
.needs_guest_memory = true ,
.may_evict = false ,
.type_name = "DX streamoutput" ,
.domain = VMW_BO_DOMAIN_MOB,
.busy_domain = VMW_BO_DOMAIN_MOB,
.create = vmw_dx_streamoutput_create,
.destroy = NULL, /* Command buffer managed resource. */
.bind = vmw_dx_streamoutput_bind,
.unbind = vmw_dx_streamoutput_unbind,
.commit_notify = vmw_dx_streamoutput_commit_notify,
};
static inline struct vmw_dx_streamoutput *
vmw_res_to_dx_streamoutput(struct vmw_resource *res)
{
return container_of(res, struct vmw_dx_streamoutput, res);
}
/**
* vmw_dx_streamoutput_unscrub - Reattach the MOB to streamoutput .
* @ res : The streamoutput resource .
*
* Return : 0 on success , negative error code on failure .
*/
static int vmw_dx_streamoutput_unscrub(struct vmw_resource *res)
{
struct vmw_dx_streamoutput *so = vmw_res_to_dx_streamoutput(res);
struct vmw_private *dev_priv = res->dev_priv;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdDXBindStreamOutput body;
} *cmd;
if (!list_empty(&so->cotable_head) || !so->committed )
return 0 ;
cmd = VMW_CMD_CTX_RESERVE(dev_priv, sizeof (*cmd), so->ctx->id);
if (!cmd)
return -ENOMEM;
cmd->header.id = SVGA_3D_CMD_DX_BIND_STREAMOUTPUT;
cmd->header.size = sizeof (cmd->body);
cmd->body.soid = so->id;
cmd->body.mobid = res->guest_memory_bo->tbo.resource->start;
cmd->body.offsetInBytes = res->guest_memory_offset;
cmd->body.sizeInBytes = so->size;
vmw_cmd_commit(dev_priv, sizeof (*cmd));
vmw_cotable_add_resource(so->cotable, &so->cotable_head);
return 0 ;
}
static int vmw_dx_streamoutput_create(struct vmw_resource *res)
{
struct vmw_private *dev_priv = res->dev_priv;
struct vmw_dx_streamoutput *so = vmw_res_to_dx_streamoutput(res);
int ret = 0 ;
WARN_ON_ONCE(!so->committed);
if (vmw_resource_mob_attached(res)) {
mutex_lock(&dev_priv->binding_mutex);
ret = vmw_dx_streamoutput_unscrub(res);
mutex_unlock(&dev_priv->binding_mutex);
}
res->id = so->id;
return ret;
}
static int vmw_dx_streamoutput_bind(struct vmw_resource *res,
struct ttm_validate_buffer *val_buf)
{
struct vmw_private *dev_priv = res->dev_priv;
struct ttm_buffer_object *bo = val_buf->bo;
int ret;
if (WARN_ON(bo->resource->mem_type != VMW_PL_MOB))
return -EINVAL;
mutex_lock(&dev_priv->binding_mutex);
ret = vmw_dx_streamoutput_unscrub(res);
mutex_unlock(&dev_priv->binding_mutex);
return ret;
}
/**
* vmw_dx_streamoutput_scrub - Unbind the MOB from streamoutput .
* @ res : The streamoutput resource .
*
* Return : 0 on success , negative error code on failure .
*/
static int vmw_dx_streamoutput_scrub(struct vmw_resource *res)
{
struct vmw_private *dev_priv = res->dev_priv;
struct vmw_dx_streamoutput *so = vmw_res_to_dx_streamoutput(res);
struct {
SVGA3dCmdHeader header;
SVGA3dCmdDXBindStreamOutput body;
} *cmd;
if (list_empty(&so->cotable_head))
return 0 ;
WARN_ON_ONCE(!so->committed);
cmd = VMW_CMD_CTX_RESERVE(dev_priv, sizeof (*cmd), so->ctx->id);
if (!cmd)
return -ENOMEM;
cmd->header.id = SVGA_3D_CMD_DX_BIND_STREAMOUTPUT;
cmd->header.size = sizeof (cmd->body);
cmd->body.soid = res->id;
cmd->body.mobid = SVGA3D_INVALID_ID;
cmd->body.offsetInBytes = 0 ;
cmd->body.sizeInBytes = so->size;
vmw_cmd_commit(dev_priv, sizeof (*cmd));
res->id = -1 ;
list_del_init(&so->cotable_head);
return 0 ;
}
static int vmw_dx_streamoutput_unbind(struct vmw_resource *res, bool readback,
struct ttm_validate_buffer *val_buf)
{
struct vmw_private *dev_priv = res->dev_priv;
struct vmw_fence_obj *fence;
int ret;
if (WARN_ON(res->guest_memory_bo->tbo.resource->mem_type != VMW_PL_MOB))
return -EINVAL;
mutex_lock(&dev_priv->binding_mutex);
ret = vmw_dx_streamoutput_scrub(res);
mutex_unlock(&dev_priv->binding_mutex);
if (ret)
return ret;
(void ) vmw_execbuf_fence_commands(NULL, dev_priv, &fence, NULL);
vmw_bo_fence_single(val_buf->bo, fence);
if (fence != NULL)
vmw_fence_obj_unreference(&fence);
return 0 ;
}
static void vmw_dx_streamoutput_commit_notify(struct vmw_resource *res,
enum vmw_cmdbuf_res_state state)
{
struct vmw_private *dev_priv = res->dev_priv;
struct vmw_dx_streamoutput *so = vmw_res_to_dx_streamoutput(res);
if (state == VMW_CMDBUF_RES_ADD) {
mutex_lock(&dev_priv->binding_mutex);
vmw_cotable_add_resource(so->cotable, &so->cotable_head);
so->committed = true ;
res->id = so->id;
mutex_unlock(&dev_priv->binding_mutex);
} else {
mutex_lock(&dev_priv->binding_mutex);
list_del_init(&so->cotable_head);
so->committed = false ;
res->id = -1 ;
mutex_unlock(&dev_priv->binding_mutex);
}
}
/**
* vmw_dx_streamoutput_lookup - Do a streamoutput resource lookup by user key .
* @ man : Command buffer managed resource manager for current context .
* @ user_key : User - space identifier for lookup .
*
* Return : Valid refcounted vmw_resource on success , error pointer on failure .
*/
struct vmw_resource *
vmw_dx_streamoutput_lookup(struct vmw_cmdbuf_res_manager *man,
u32 user_key)
{
return vmw_cmdbuf_res_lookup(man, vmw_cmdbuf_res_streamoutput,
user_key);
}
static void vmw_dx_streamoutput_res_free(struct vmw_resource *res)
{
struct vmw_dx_streamoutput *so = vmw_res_to_dx_streamoutput(res);
vmw_resource_unreference(&so->cotable);
kfree(so);
}
static void vmw_dx_streamoutput_hw_destroy(struct vmw_resource *res)
{
/* Destroyed by user-space cmd buf or as part of context takedown. */
res->id = -1 ;
}
/**
* vmw_dx_streamoutput_add - Add a streamoutput as a cmd buf managed resource .
* @ man : Command buffer managed resource manager for current context .
* @ ctx : Pointer to context resource .
* @ user_key : The identifier for this streamoutput .
* @ list : The list of staged command buffer managed resources .
*
* Return : 0 on success , negative error code on failure .
*/
int vmw_dx_streamoutput_add(struct vmw_cmdbuf_res_manager *man,
struct vmw_resource *ctx, u32 user_key,
struct list_head *list)
{
struct vmw_dx_streamoutput *so;
struct vmw_resource *res;
struct vmw_private *dev_priv = ctx->dev_priv;
int ret;
so = kmalloc(sizeof (*so), GFP_KERNEL);
if (!so) {
return -ENOMEM;
}
res = &so->res;
so->ctx = ctx;
so->cotable = vmw_resource_reference
(vmw_context_cotable(ctx, SVGA_COTABLE_STREAMOUTPUT));
so->id = user_key;
so->committed = false ;
INIT_LIST_HEAD(&so->cotable_head);
ret = vmw_resource_init(dev_priv, res, true ,
vmw_dx_streamoutput_res_free,
&vmw_dx_streamoutput_func);
if (ret)
goto out_resource_init;
ret = vmw_cmdbuf_res_add(man, vmw_cmdbuf_res_streamoutput, user_key,
res, list);
if (ret)
goto out_resource_init;
res->id = so->id;
res->hw_destroy = vmw_dx_streamoutput_hw_destroy;
out_resource_init:
vmw_resource_unreference(&res);
return ret;
}
/**
* vmw_dx_streamoutput_set_size - Sets streamoutput mob size in res struct .
* @ res : The streamoutput res for which need to set size .
* @ size : The size provided by user - space to set .
*/
void vmw_dx_streamoutput_set_size(struct vmw_resource *res, u32 size)
{
struct vmw_dx_streamoutput *so = vmw_res_to_dx_streamoutput(res);
so->size = size;
}
/**
* vmw_dx_streamoutput_remove - Stage streamoutput for removal .
* @ man : Command buffer managed resource manager for current context .
* @ user_key : The identifier for this streamoutput .
* @ list : The list of staged command buffer managed resources .
*
* Return : 0 on success , negative error code on failure .
*/
int vmw_dx_streamoutput_remove(struct vmw_cmdbuf_res_manager *man,
u32 user_key,
struct list_head *list)
{
struct vmw_resource *r;
return vmw_cmdbuf_res_remove(man, vmw_cmdbuf_res_streamoutput,
(u32)user_key, list, &r);
}
/**
* vmw_dx_streamoutput_cotable_list_scrub - cotable unbind_func callback .
* @ dev_priv : Device private .
* @ list : The list of cotable resources .
* @ readback : Whether the call was part of a readback unbind .
*/
void vmw_dx_streamoutput_cotable_list_scrub(struct vmw_private *dev_priv,
struct list_head *list,
bool readback)
{
struct vmw_dx_streamoutput *entry, *next;
lockdep_assert_held_once(&dev_priv->binding_mutex);
list_for_each_entry_safe(entry, next, list, cotable_head) {
WARN_ON(vmw_dx_streamoutput_scrub(&entry->res));
if (!readback)
entry->committed =false ;
}
}
Messung V0.5 in Prozent C=97 H=98 G=97
¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet am 2026-09-29)
¤
*© Formatika GbR, Deutschland
2026-10-10
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