// 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;
}
}
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