202 lines
7.3 KiB
C
202 lines
7.3 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 OR MIT */
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/**************************************************************************
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*
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* Copyright © 2018 - 2022 VMware, Inc., Palo Alto, CA., USA
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* All Rights Reserved.
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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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#ifndef _VMWGFX_VALIDATION_H_
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#define _VMWGFX_VALIDATION_H_
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#include <linux/list.h>
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#include <linux/hashtable.h>
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#include <linux/ww_mutex.h>
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#include <drm/ttm/ttm_execbuf_util.h>
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#define VMW_RES_DIRTY_NONE 0
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#define VMW_RES_DIRTY_SET BIT(0)
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#define VMW_RES_DIRTY_CLEAR BIT(1)
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/**
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* struct vmw_validation_context - Per command submission validation context
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* @ht: Hash table used to find resource- or buffer object duplicates
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* @resource_list: List head for resource validation metadata
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* @resource_ctx_list: List head for resource validation metadata for
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* resources that need to be validated before those in @resource_list
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* @bo_list: List head for buffer objects
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* @page_list: List of pages used by the memory allocator
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* @ticket: Ticked used for ww mutex locking
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* @res_mutex: Pointer to mutex used for resource reserving
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* @merge_dups: Whether to merge metadata for duplicate resources or
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* buffer objects
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* @mem_size_left: Free memory left in the last page in @page_list
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* @page_address: Kernel virtual address of the last page in @page_list
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* @vm: A pointer to the memory reservation interface or NULL if no
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* memory reservation is needed.
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* @vm_size_left: Amount of reserved memory that so far has not been allocated.
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* @total_mem: Amount of reserved memory.
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*/
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struct vmw_validation_context {
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struct vmw_sw_context *sw_context;
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struct list_head resource_list;
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struct list_head resource_ctx_list;
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struct list_head bo_list;
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struct list_head page_list;
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struct ww_acquire_ctx ticket;
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struct mutex *res_mutex;
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unsigned int merge_dups;
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unsigned int mem_size_left;
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u8 *page_address;
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struct vmw_validation_mem *vm;
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size_t vm_size_left;
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size_t total_mem;
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};
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struct vmw_buffer_object;
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struct vmw_resource;
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struct vmw_fence_obj;
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#if 0
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/**
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* DECLARE_VAL_CONTEXT - Declare a validation context with initialization
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* @_name: The name of the variable
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* @_sw_context: Contains the hash table used to find dups or NULL if none
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* @_merge_dups: Whether to merge duplicate buffer object- or resource
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* entries. If set to true, ideally a hash table pointer should be supplied
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* as well unless the number of resources and buffer objects per validation
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* is known to be very small
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*/
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#endif
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#define DECLARE_VAL_CONTEXT(_name, _sw_context, _merge_dups) \
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struct vmw_validation_context _name = \
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{ .sw_context = _sw_context, \
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.resource_list = LIST_HEAD_INIT((_name).resource_list), \
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.resource_ctx_list = LIST_HEAD_INIT((_name).resource_ctx_list), \
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.bo_list = LIST_HEAD_INIT((_name).bo_list), \
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.page_list = LIST_HEAD_INIT((_name).page_list), \
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.res_mutex = NULL, \
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.merge_dups = _merge_dups, \
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.mem_size_left = 0, \
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}
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/**
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* vmw_validation_has_bos - return whether the validation context has
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* any buffer objects registered.
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*
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* @ctx: The validation context
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* Returns: Whether any buffer objects are registered
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*/
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static inline bool
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vmw_validation_has_bos(struct vmw_validation_context *ctx)
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{
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return !list_empty(&ctx->bo_list);
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}
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/**
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* vmw_validation_bo_reserve - Reserve buffer objects registered with a
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* validation context
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* @ctx: The validation context
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* @intr: Perform waits interruptible
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*
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* Return: Zero on success, -ERESTARTSYS when interrupted, negative error
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* code on failure
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*/
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static inline int
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vmw_validation_bo_reserve(struct vmw_validation_context *ctx,
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bool intr)
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{
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return ttm_eu_reserve_buffers(&ctx->ticket, &ctx->bo_list, intr,
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NULL);
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}
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/**
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* vmw_validation_bo_fence - Unreserve and fence buffer objects registered
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* with a validation context
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* @ctx: The validation context
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*
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* This function unreserves the buffer objects previously reserved using
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* vmw_validation_bo_reserve, and fences them with a fence object.
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*/
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static inline void
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vmw_validation_bo_fence(struct vmw_validation_context *ctx,
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struct vmw_fence_obj *fence)
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{
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ttm_eu_fence_buffer_objects(&ctx->ticket, &ctx->bo_list,
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(void *) fence);
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}
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/**
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* vmw_validation_align - Align a validation memory allocation
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* @val: The size to be aligned
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*
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* Returns: @val aligned to the granularity used by the validation memory
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* allocator.
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*/
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static inline unsigned int vmw_validation_align(unsigned int val)
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{
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return ALIGN(val, sizeof(long));
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}
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int vmw_validation_add_bo(struct vmw_validation_context *ctx,
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struct vmw_buffer_object *vbo,
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bool as_mob, bool cpu_blit);
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int vmw_validation_bo_validate_single(struct ttm_buffer_object *bo,
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bool interruptible,
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bool validate_as_mob);
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int vmw_validation_bo_validate(struct vmw_validation_context *ctx, bool intr);
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void vmw_validation_unref_lists(struct vmw_validation_context *ctx);
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int vmw_validation_add_resource(struct vmw_validation_context *ctx,
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struct vmw_resource *res,
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size_t priv_size,
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u32 dirty,
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void **p_node,
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bool *first_usage);
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void vmw_validation_drop_ht(struct vmw_validation_context *ctx);
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int vmw_validation_res_reserve(struct vmw_validation_context *ctx,
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bool intr);
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void vmw_validation_res_unreserve(struct vmw_validation_context *ctx,
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bool backoff);
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void vmw_validation_res_switch_backup(struct vmw_validation_context *ctx,
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void *val_private,
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struct vmw_buffer_object *vbo,
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unsigned long backup_offset);
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int vmw_validation_res_validate(struct vmw_validation_context *ctx, bool intr);
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int vmw_validation_prepare(struct vmw_validation_context *ctx,
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struct mutex *mutex, bool intr);
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void vmw_validation_revert(struct vmw_validation_context *ctx);
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void vmw_validation_done(struct vmw_validation_context *ctx,
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struct vmw_fence_obj *fence);
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void *vmw_validation_mem_alloc(struct vmw_validation_context *ctx,
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unsigned int size);
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int vmw_validation_preload_bo(struct vmw_validation_context *ctx);
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int vmw_validation_preload_res(struct vmw_validation_context *ctx,
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unsigned int size);
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void vmw_validation_res_set_dirty(struct vmw_validation_context *ctx,
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void *val_private, u32 dirty);
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void vmw_validation_bo_backoff(struct vmw_validation_context *ctx);
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#endif
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