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With SM5 capability a new version of streamoutput is supported by device which need backing mob and a new field. With this change the new command is supported in command buffer. v2: Also track streamoutput context binding in binding manager. v3: Track only one streamoutput as only one can be set to context. v4: Fix comment typos Signed-off-by: Deepak Rawat <drawat.floss@gmail.com> Signed-off-by: Neha Bhende <bhenden@vmware.com> Reviewed-by: Thomas Hellström (VMware) <thomas_os@shipmail.org> Reviewed-by: Roland Scheidegger <sroland@vmware.com> Signed-off-by: Roland Scheidegger <sroland@vmware.com>
664 lines
19 KiB
C
664 lines
19 KiB
C
// SPDX-License-Identifier: GPL-2.0 OR MIT
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/**************************************************************************
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*
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* Copyright 2014-2015 VMware, Inc., Palo Alto, CA., USA
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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* USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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/*
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* Treat context OTables as resources to make use of the resource
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* backing MOB eviction mechanism, that is used to read back the COTable
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* whenever the backing MOB is evicted.
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*/
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#include <drm/ttm/ttm_placement.h>
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#include "vmwgfx_drv.h"
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#include "vmwgfx_resource_priv.h"
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#include "vmwgfx_so.h"
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/**
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* struct vmw_cotable - Context Object Table resource
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*
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* @res: struct vmw_resource we are deriving from.
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* @ctx: non-refcounted pointer to the owning context.
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* @size_read_back: Size of data read back during eviction.
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* @seen_entries: Seen entries in command stream for this cotable.
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* @type: The cotable type.
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* @scrubbed: Whether the cotable has been scrubbed.
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* @resource_list: List of resources in the cotable.
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*/
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struct vmw_cotable {
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struct vmw_resource res;
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struct vmw_resource *ctx;
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size_t size_read_back;
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int seen_entries;
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u32 type;
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bool scrubbed;
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struct list_head resource_list;
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};
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/**
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* struct vmw_cotable_info - Static info about cotable types
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*
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* @min_initial_entries: Min number of initial intries at cotable allocation
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* for this cotable type.
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* @size: Size of each entry.
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*/
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struct vmw_cotable_info {
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u32 min_initial_entries;
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u32 size;
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void (*unbind_func)(struct vmw_private *, struct list_head *,
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bool);
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};
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static const struct vmw_cotable_info co_info[] = {
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{1, sizeof(SVGACOTableDXRTViewEntry), &vmw_view_cotable_list_destroy},
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{1, sizeof(SVGACOTableDXDSViewEntry), &vmw_view_cotable_list_destroy},
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{1, sizeof(SVGACOTableDXSRViewEntry), &vmw_view_cotable_list_destroy},
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{1, sizeof(SVGACOTableDXElementLayoutEntry), NULL},
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{1, sizeof(SVGACOTableDXBlendStateEntry), NULL},
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{1, sizeof(SVGACOTableDXDepthStencilEntry), NULL},
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{1, sizeof(SVGACOTableDXRasterizerStateEntry), NULL},
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{1, sizeof(SVGACOTableDXSamplerEntry), NULL},
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{1, sizeof(SVGACOTableDXStreamOutputEntry), &vmw_dx_streamoutput_cotable_list_scrub},
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{1, sizeof(SVGACOTableDXQueryEntry), NULL},
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{1, sizeof(SVGACOTableDXShaderEntry), &vmw_dx_shader_cotable_list_scrub},
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{1, sizeof(SVGACOTableDXUAViewEntry), &vmw_view_cotable_list_destroy}
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};
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/*
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* Cotables with bindings that we remove must be scrubbed first,
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* otherwise, the device will swap in an invalid context when we remove
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* bindings before scrubbing a cotable...
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*/
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const SVGACOTableType vmw_cotable_scrub_order[] = {
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SVGA_COTABLE_RTVIEW,
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SVGA_COTABLE_DSVIEW,
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SVGA_COTABLE_SRVIEW,
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SVGA_COTABLE_DXSHADER,
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SVGA_COTABLE_ELEMENTLAYOUT,
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SVGA_COTABLE_BLENDSTATE,
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SVGA_COTABLE_DEPTHSTENCIL,
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SVGA_COTABLE_RASTERIZERSTATE,
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SVGA_COTABLE_SAMPLER,
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SVGA_COTABLE_STREAMOUTPUT,
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SVGA_COTABLE_DXQUERY,
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SVGA_COTABLE_UAVIEW,
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};
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static int vmw_cotable_bind(struct vmw_resource *res,
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struct ttm_validate_buffer *val_buf);
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static int vmw_cotable_unbind(struct vmw_resource *res,
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bool readback,
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struct ttm_validate_buffer *val_buf);
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static int vmw_cotable_create(struct vmw_resource *res);
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static int vmw_cotable_destroy(struct vmw_resource *res);
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static const struct vmw_res_func vmw_cotable_func = {
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.res_type = vmw_res_cotable,
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.needs_backup = true,
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.may_evict = true,
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.prio = 3,
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.dirty_prio = 3,
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.type_name = "context guest backed object tables",
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.backup_placement = &vmw_mob_placement,
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.create = vmw_cotable_create,
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.destroy = vmw_cotable_destroy,
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.bind = vmw_cotable_bind,
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.unbind = vmw_cotable_unbind,
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};
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/**
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* vmw_cotable - Convert a struct vmw_resource pointer to a struct
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* vmw_cotable pointer
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*
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* @res: Pointer to the resource.
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*/
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static struct vmw_cotable *vmw_cotable(struct vmw_resource *res)
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{
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return container_of(res, struct vmw_cotable, res);
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}
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/**
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* vmw_cotable_destroy - Cotable resource destroy callback
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*
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* @res: Pointer to the cotable resource.
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*
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* There is no device cotable destroy command, so this function only
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* makes sure that the resource id is set to invalid.
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*/
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static int vmw_cotable_destroy(struct vmw_resource *res)
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{
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res->id = -1;
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return 0;
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}
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/**
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* vmw_cotable_unscrub - Undo a cotable unscrub operation
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*
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* @res: Pointer to the cotable resource
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*
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* This function issues commands to (re)bind the cotable to
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* its backing mob, which needs to be validated and reserved at this point.
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* This is identical to bind() except the function interface looks different.
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*/
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static int vmw_cotable_unscrub(struct vmw_resource *res)
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{
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struct vmw_cotable *vcotbl = vmw_cotable(res);
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struct vmw_private *dev_priv = res->dev_priv;
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struct ttm_buffer_object *bo = &res->backup->base;
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struct {
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SVGA3dCmdHeader header;
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SVGA3dCmdDXSetCOTable body;
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} *cmd;
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WARN_ON_ONCE(bo->mem.mem_type != VMW_PL_MOB);
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dma_resv_assert_held(bo->base.resv);
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cmd = VMW_FIFO_RESERVE(dev_priv, sizeof(*cmd));
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if (!cmd)
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return -ENOMEM;
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WARN_ON(vcotbl->ctx->id == SVGA3D_INVALID_ID);
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WARN_ON(bo->mem.mem_type != VMW_PL_MOB);
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cmd->header.id = SVGA_3D_CMD_DX_SET_COTABLE;
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cmd->header.size = sizeof(cmd->body);
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cmd->body.cid = vcotbl->ctx->id;
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cmd->body.type = vcotbl->type;
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cmd->body.mobid = bo->mem.start;
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cmd->body.validSizeInBytes = vcotbl->size_read_back;
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vmw_fifo_commit_flush(dev_priv, sizeof(*cmd));
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vcotbl->scrubbed = false;
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return 0;
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}
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/**
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* vmw_cotable_bind - Undo a cotable unscrub operation
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*
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* @res: Pointer to the cotable resource
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* @val_buf: Pointer to a struct ttm_validate_buffer prepared by the caller
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* for convenience / fencing.
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*
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* This function issues commands to (re)bind the cotable to
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* its backing mob, which needs to be validated and reserved at this point.
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*/
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static int vmw_cotable_bind(struct vmw_resource *res,
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struct ttm_validate_buffer *val_buf)
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{
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/*
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* The create() callback may have changed @res->backup without
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* the caller noticing, and with val_buf->bo still pointing to
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* the old backup buffer. Although hackish, and not used currently,
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* take the opportunity to correct the value here so that it's not
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* misused in the future.
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*/
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val_buf->bo = &res->backup->base;
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return vmw_cotable_unscrub(res);
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}
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/**
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* vmw_cotable_scrub - Scrub the cotable from the device.
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*
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* @res: Pointer to the cotable resource.
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* @readback: Whether initiate a readback of the cotable data to the backup
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* buffer.
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*
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* In some situations (context swapouts) it might be desirable to make the
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* device forget about the cotable without performing a full unbind. A full
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* unbind requires reserved backup buffers and it might not be possible to
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* reserve them due to locking order violation issues. The vmw_cotable_scrub
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* function implements a partial unbind() without that requirement but with the
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* following restrictions.
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* 1) Before the cotable is again used by the GPU, vmw_cotable_unscrub() must
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* be called.
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* 2) Before the cotable backing buffer is used by the CPU, or during the
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* resource destruction, vmw_cotable_unbind() must be called.
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*/
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int vmw_cotable_scrub(struct vmw_resource *res, bool readback)
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{
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struct vmw_cotable *vcotbl = vmw_cotable(res);
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struct vmw_private *dev_priv = res->dev_priv;
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size_t submit_size;
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struct {
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SVGA3dCmdHeader header;
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SVGA3dCmdDXReadbackCOTable body;
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} *cmd0;
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struct {
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SVGA3dCmdHeader header;
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SVGA3dCmdDXSetCOTable body;
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} *cmd1;
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if (vcotbl->scrubbed)
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return 0;
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if (co_info[vcotbl->type].unbind_func)
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co_info[vcotbl->type].unbind_func(dev_priv,
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&vcotbl->resource_list,
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readback);
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submit_size = sizeof(*cmd1);
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if (readback)
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submit_size += sizeof(*cmd0);
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cmd1 = VMW_FIFO_RESERVE(dev_priv, submit_size);
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if (!cmd1)
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return -ENOMEM;
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vcotbl->size_read_back = 0;
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if (readback) {
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cmd0 = (void *) cmd1;
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cmd0->header.id = SVGA_3D_CMD_DX_READBACK_COTABLE;
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cmd0->header.size = sizeof(cmd0->body);
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cmd0->body.cid = vcotbl->ctx->id;
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cmd0->body.type = vcotbl->type;
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cmd1 = (void *) &cmd0[1];
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vcotbl->size_read_back = res->backup_size;
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}
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cmd1->header.id = SVGA_3D_CMD_DX_SET_COTABLE;
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cmd1->header.size = sizeof(cmd1->body);
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cmd1->body.cid = vcotbl->ctx->id;
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cmd1->body.type = vcotbl->type;
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cmd1->body.mobid = SVGA3D_INVALID_ID;
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cmd1->body.validSizeInBytes = 0;
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vmw_fifo_commit_flush(dev_priv, submit_size);
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vcotbl->scrubbed = true;
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/* Trigger a create() on next validate. */
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res->id = -1;
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return 0;
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}
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/**
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* vmw_cotable_unbind - Cotable resource unbind callback
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*
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* @res: Pointer to the cotable resource.
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* @readback: Whether to read back cotable data to the backup buffer.
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* val_buf: Pointer to a struct ttm_validate_buffer prepared by the caller
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* for convenience / fencing.
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*
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* Unbinds the cotable from the device and fences the backup buffer.
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*/
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static int vmw_cotable_unbind(struct vmw_resource *res,
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bool readback,
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struct ttm_validate_buffer *val_buf)
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{
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struct vmw_cotable *vcotbl = vmw_cotable(res);
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struct vmw_private *dev_priv = res->dev_priv;
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struct ttm_buffer_object *bo = val_buf->bo;
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struct vmw_fence_obj *fence;
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if (!vmw_resource_mob_attached(res))
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return 0;
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WARN_ON_ONCE(bo->mem.mem_type != VMW_PL_MOB);
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dma_resv_assert_held(bo->base.resv);
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mutex_lock(&dev_priv->binding_mutex);
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if (!vcotbl->scrubbed)
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vmw_dx_context_scrub_cotables(vcotbl->ctx, readback);
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mutex_unlock(&dev_priv->binding_mutex);
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(void) vmw_execbuf_fence_commands(NULL, dev_priv, &fence, NULL);
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vmw_bo_fence_single(bo, fence);
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if (likely(fence != NULL))
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vmw_fence_obj_unreference(&fence);
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return 0;
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}
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/**
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* vmw_cotable_readback - Read back a cotable without unbinding.
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*
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* @res: The cotable resource.
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*
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* Reads back a cotable to its backing mob without scrubbing the MOB from
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* the cotable. The MOB is fenced for subsequent CPU access.
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*/
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static int vmw_cotable_readback(struct vmw_resource *res)
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{
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struct vmw_cotable *vcotbl = vmw_cotable(res);
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struct vmw_private *dev_priv = res->dev_priv;
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struct {
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SVGA3dCmdHeader header;
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SVGA3dCmdDXReadbackCOTable body;
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} *cmd;
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struct vmw_fence_obj *fence;
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if (!vcotbl->scrubbed) {
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cmd = VMW_FIFO_RESERVE(dev_priv, sizeof(*cmd));
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if (!cmd)
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return -ENOMEM;
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cmd->header.id = SVGA_3D_CMD_DX_READBACK_COTABLE;
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cmd->header.size = sizeof(cmd->body);
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cmd->body.cid = vcotbl->ctx->id;
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cmd->body.type = vcotbl->type;
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vcotbl->size_read_back = res->backup_size;
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vmw_fifo_commit(dev_priv, sizeof(*cmd));
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}
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(void) vmw_execbuf_fence_commands(NULL, dev_priv, &fence, NULL);
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vmw_bo_fence_single(&res->backup->base, fence);
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vmw_fence_obj_unreference(&fence);
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return 0;
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}
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/**
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* vmw_cotable_resize - Resize a cotable.
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*
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* @res: The cotable resource.
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* @new_size: The new size.
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*
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* Resizes a cotable and binds the new backup buffer.
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* On failure the cotable is left intact.
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* Important! This function may not fail once the MOB switch has been
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* committed to hardware. That would put the device context in an
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* invalid state which we can't currently recover from.
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*/
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static int vmw_cotable_resize(struct vmw_resource *res, size_t new_size)
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{
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struct ttm_operation_ctx ctx = { false, false };
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struct vmw_private *dev_priv = res->dev_priv;
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struct vmw_cotable *vcotbl = vmw_cotable(res);
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struct vmw_buffer_object *buf, *old_buf = res->backup;
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struct ttm_buffer_object *bo, *old_bo = &res->backup->base;
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size_t old_size = res->backup_size;
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size_t old_size_read_back = vcotbl->size_read_back;
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size_t cur_size_read_back;
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struct ttm_bo_kmap_obj old_map, new_map;
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int ret;
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size_t i;
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ret = vmw_cotable_readback(res);
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if (ret)
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return ret;
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cur_size_read_back = vcotbl->size_read_back;
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vcotbl->size_read_back = old_size_read_back;
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/*
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* While device is processing, Allocate and reserve a buffer object
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* for the new COTable. Initially pin the buffer object to make sure
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* we can use tryreserve without failure.
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*/
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buf = kzalloc(sizeof(*buf), GFP_KERNEL);
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if (!buf)
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return -ENOMEM;
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ret = vmw_bo_init(dev_priv, buf, new_size, &vmw_mob_ne_placement,
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true, vmw_bo_bo_free);
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if (ret) {
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DRM_ERROR("Failed initializing new cotable MOB.\n");
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return ret;
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}
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bo = &buf->base;
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WARN_ON_ONCE(ttm_bo_reserve(bo, false, true, NULL));
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ret = ttm_bo_wait(old_bo, false, false);
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if (unlikely(ret != 0)) {
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DRM_ERROR("Failed waiting for cotable unbind.\n");
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goto out_wait;
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}
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/*
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* Do a page by page copy of COTables. This eliminates slow vmap()s.
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* This should really be a TTM utility.
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*/
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for (i = 0; i < old_bo->num_pages; ++i) {
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bool dummy;
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ret = ttm_bo_kmap(old_bo, i, 1, &old_map);
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if (unlikely(ret != 0)) {
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DRM_ERROR("Failed mapping old COTable on resize.\n");
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goto out_wait;
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}
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ret = ttm_bo_kmap(bo, i, 1, &new_map);
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if (unlikely(ret != 0)) {
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DRM_ERROR("Failed mapping new COTable on resize.\n");
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goto out_map_new;
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}
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memcpy(ttm_kmap_obj_virtual(&new_map, &dummy),
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ttm_kmap_obj_virtual(&old_map, &dummy),
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PAGE_SIZE);
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ttm_bo_kunmap(&new_map);
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ttm_bo_kunmap(&old_map);
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}
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/* Unpin new buffer, and switch backup buffers. */
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ret = ttm_bo_validate(bo, &vmw_mob_placement, &ctx);
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if (unlikely(ret != 0)) {
|
|
DRM_ERROR("Failed validating new COTable backup buffer.\n");
|
|
goto out_wait;
|
|
}
|
|
|
|
vmw_resource_mob_detach(res);
|
|
res->backup = buf;
|
|
res->backup_size = new_size;
|
|
vcotbl->size_read_back = cur_size_read_back;
|
|
|
|
/*
|
|
* Now tell the device to switch. If this fails, then we need to
|
|
* revert the full resize.
|
|
*/
|
|
ret = vmw_cotable_unscrub(res);
|
|
if (ret) {
|
|
DRM_ERROR("Failed switching COTable backup buffer.\n");
|
|
res->backup = old_buf;
|
|
res->backup_size = old_size;
|
|
vcotbl->size_read_back = old_size_read_back;
|
|
vmw_resource_mob_attach(res);
|
|
goto out_wait;
|
|
}
|
|
|
|
vmw_resource_mob_attach(res);
|
|
/* Let go of the old mob. */
|
|
vmw_bo_unreference(&old_buf);
|
|
res->id = vcotbl->type;
|
|
|
|
return 0;
|
|
|
|
out_map_new:
|
|
ttm_bo_kunmap(&old_map);
|
|
out_wait:
|
|
ttm_bo_unreserve(bo);
|
|
vmw_bo_unreference(&buf);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* vmw_cotable_create - Cotable resource create callback
|
|
*
|
|
* @res: Pointer to a cotable resource.
|
|
*
|
|
* There is no separate create command for cotables, so this callback, which
|
|
* is called before bind() in the validation sequence is instead used for two
|
|
* things.
|
|
* 1) Unscrub the cotable if it is scrubbed and still attached to a backup
|
|
* buffer.
|
|
* 2) Resize the cotable if needed.
|
|
*/
|
|
static int vmw_cotable_create(struct vmw_resource *res)
|
|
{
|
|
struct vmw_cotable *vcotbl = vmw_cotable(res);
|
|
size_t new_size = res->backup_size;
|
|
size_t needed_size;
|
|
int ret;
|
|
|
|
/* Check whether we need to resize the cotable */
|
|
needed_size = (vcotbl->seen_entries + 1) * co_info[vcotbl->type].size;
|
|
while (needed_size > new_size)
|
|
new_size *= 2;
|
|
|
|
if (likely(new_size <= res->backup_size)) {
|
|
if (vcotbl->scrubbed && vmw_resource_mob_attached(res)) {
|
|
ret = vmw_cotable_unscrub(res);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
res->id = vcotbl->type;
|
|
return 0;
|
|
}
|
|
|
|
return vmw_cotable_resize(res, new_size);
|
|
}
|
|
|
|
/**
|
|
* vmw_hw_cotable_destroy - Cotable hw_destroy callback
|
|
*
|
|
* @res: Pointer to a cotable resource.
|
|
*
|
|
* The final (part of resource destruction) destroy callback.
|
|
*/
|
|
static void vmw_hw_cotable_destroy(struct vmw_resource *res)
|
|
{
|
|
(void) vmw_cotable_destroy(res);
|
|
}
|
|
|
|
static size_t cotable_acc_size;
|
|
|
|
/**
|
|
* vmw_cotable_free - Cotable resource destructor
|
|
*
|
|
* @res: Pointer to a cotable resource.
|
|
*/
|
|
static void vmw_cotable_free(struct vmw_resource *res)
|
|
{
|
|
struct vmw_private *dev_priv = res->dev_priv;
|
|
|
|
kfree(res);
|
|
ttm_mem_global_free(vmw_mem_glob(dev_priv), cotable_acc_size);
|
|
}
|
|
|
|
/**
|
|
* vmw_cotable_alloc - Create a cotable resource
|
|
*
|
|
* @dev_priv: Pointer to a device private struct.
|
|
* @ctx: Pointer to the context resource.
|
|
* The cotable resource will not add a refcount.
|
|
* @type: The cotable type.
|
|
*/
|
|
struct vmw_resource *vmw_cotable_alloc(struct vmw_private *dev_priv,
|
|
struct vmw_resource *ctx,
|
|
u32 type)
|
|
{
|
|
struct vmw_cotable *vcotbl;
|
|
struct ttm_operation_ctx ttm_opt_ctx = {
|
|
.interruptible = true,
|
|
.no_wait_gpu = false
|
|
};
|
|
int ret;
|
|
u32 num_entries;
|
|
|
|
if (unlikely(cotable_acc_size == 0))
|
|
cotable_acc_size = ttm_round_pot(sizeof(struct vmw_cotable));
|
|
|
|
ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv),
|
|
cotable_acc_size, &ttm_opt_ctx);
|
|
if (unlikely(ret))
|
|
return ERR_PTR(ret);
|
|
|
|
vcotbl = kzalloc(sizeof(*vcotbl), GFP_KERNEL);
|
|
if (unlikely(!vcotbl)) {
|
|
ret = -ENOMEM;
|
|
goto out_no_alloc;
|
|
}
|
|
|
|
ret = vmw_resource_init(dev_priv, &vcotbl->res, true,
|
|
vmw_cotable_free, &vmw_cotable_func);
|
|
if (unlikely(ret != 0))
|
|
goto out_no_init;
|
|
|
|
INIT_LIST_HEAD(&vcotbl->resource_list);
|
|
vcotbl->res.id = type;
|
|
vcotbl->res.backup_size = PAGE_SIZE;
|
|
num_entries = PAGE_SIZE / co_info[type].size;
|
|
if (num_entries < co_info[type].min_initial_entries) {
|
|
vcotbl->res.backup_size = co_info[type].min_initial_entries *
|
|
co_info[type].size;
|
|
vcotbl->res.backup_size =
|
|
(vcotbl->res.backup_size + PAGE_SIZE - 1) & PAGE_MASK;
|
|
}
|
|
|
|
vcotbl->scrubbed = true;
|
|
vcotbl->seen_entries = -1;
|
|
vcotbl->type = type;
|
|
vcotbl->ctx = ctx;
|
|
|
|
vcotbl->res.hw_destroy = vmw_hw_cotable_destroy;
|
|
|
|
return &vcotbl->res;
|
|
|
|
out_no_init:
|
|
kfree(vcotbl);
|
|
out_no_alloc:
|
|
ttm_mem_global_free(vmw_mem_glob(dev_priv), cotable_acc_size);
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
/**
|
|
* vmw_cotable_notify - Notify the cotable about an item creation
|
|
*
|
|
* @res: Pointer to a cotable resource.
|
|
* @id: Item id.
|
|
*/
|
|
int vmw_cotable_notify(struct vmw_resource *res, int id)
|
|
{
|
|
struct vmw_cotable *vcotbl = vmw_cotable(res);
|
|
|
|
if (id < 0 || id >= SVGA_COTABLE_MAX_IDS) {
|
|
DRM_ERROR("Illegal COTable id. Type is %u. Id is %d\n",
|
|
(unsigned) vcotbl->type, id);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (vcotbl->seen_entries < id) {
|
|
/* Trigger a call to create() on next validate */
|
|
res->id = -1;
|
|
vcotbl->seen_entries = id;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* vmw_cotable_add_view - add a view to the cotable's list of active views.
|
|
*
|
|
* @res: pointer struct vmw_resource representing the cotable.
|
|
* @head: pointer to the struct list_head member of the resource, dedicated
|
|
* to the cotable active resource list.
|
|
*/
|
|
void vmw_cotable_add_resource(struct vmw_resource *res, struct list_head *head)
|
|
{
|
|
struct vmw_cotable *vcotbl =
|
|
container_of(res, struct vmw_cotable, res);
|
|
|
|
list_add_tail(head, &vcotbl->resource_list);
|
|
}
|