diff options
Diffstat (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_streamoutput.c')
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_streamoutput.c | 387 |
1 files changed, 387 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_streamoutput.c b/drivers/gpu/drm/vmwgfx/vmwgfx_streamoutput.c new file mode 100644 index 000000000..193192456 --- /dev/null +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_streamoutput.c @@ -0,0 +1,387 @@ +// SPDX-License-Identifier: GPL-2.0 OR MIT +/************************************************************************** + * + * Copyright © 2018-2019 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 <drm/ttm/ttm_placement.h> + +#include "vmwgfx_drv.h" +#include "vmwgfx_resource_priv.h" +#include "vmwgfx_binding.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 size_t vmw_streamoutput_size; + +static const struct vmw_res_func vmw_dx_streamoutput_func = { + .res_type = vmw_res_streamoutput, + .needs_backup = true, + .may_evict = false, + .type_name = "DX streamoutput", + .backup_placement = &vmw_mob_placement, + .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_FIFO_RESERVE_DX(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->backup->base.mem.start; + cmd->body.offsetInBytes = res->backup_offset; + cmd->body.sizeInBytes = so->size; + vmw_fifo_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->mem.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_FIFO_RESERVE_DX(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_fifo_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->backup->base.mem.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_private *dev_priv = res->dev_priv; + struct vmw_dx_streamoutput *so = vmw_res_to_dx_streamoutput(res); + + vmw_resource_unreference(&so->cotable); + kfree(so); + ttm_mem_global_free(vmw_mem_glob(dev_priv), vmw_streamoutput_size); +} + +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; + struct ttm_operation_ctx ttm_opt_ctx = { + .interruptible = true, + .no_wait_gpu = false + }; + int ret; + + if (!vmw_streamoutput_size) + vmw_streamoutput_size = ttm_round_pot(sizeof(*so)); + + ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv), + vmw_streamoutput_size, &ttm_opt_ctx); + if (ret) { + if (ret != -ERESTARTSYS) + DRM_ERROR("Out of graphics memory for streamout.\n"); + return ret; + } + + so = kmalloc(sizeof(*so), GFP_KERNEL); + if (!so) { + ttm_mem_global_free(vmw_mem_glob(dev_priv), + vmw_streamoutput_size); + 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; + } +} |