204 lines
6.1 KiB
C
204 lines
6.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 OR MIT */
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/**************************************************************************
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*
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* Copyright 2023 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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#ifndef VMWGFX_BO_H
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#define VMWGFX_BO_H
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#include "device_include/svga_reg.h"
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#include <drm/ttm/ttm_bo.h>
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#include <drm/ttm/ttm_placement.h>
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#include <linux/rbtree_types.h>
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#include <linux/types.h>
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struct vmw_bo_dirty;
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struct vmw_fence_obj;
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struct vmw_private;
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struct vmw_resource;
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enum vmw_bo_domain {
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VMW_BO_DOMAIN_SYS = BIT(0),
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VMW_BO_DOMAIN_WAITABLE_SYS = BIT(1),
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VMW_BO_DOMAIN_VRAM = BIT(2),
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VMW_BO_DOMAIN_GMR = BIT(3),
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VMW_BO_DOMAIN_MOB = BIT(4),
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};
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struct vmw_bo_params {
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u32 domain;
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u32 busy_domain;
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enum ttm_bo_type bo_type;
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size_t size;
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bool pin;
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};
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/**
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* struct vmw_bo - TTM buffer object with vmwgfx additions
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* @tbo: The TTM buffer object
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* @placement: The preferred placement for this buffer object
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* @places: The chosen places for the preferred placement.
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* @busy_places: Chosen busy places for the preferred placement
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* @map: Kmap object for semi-persistent mappings
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* @res_tree: RB tree of resources using this buffer object as a backing MOB
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* @res_prios: Eviction priority counts for attached resources
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* @cpu_writers: Number of synccpu write grabs. Protected by reservation when
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* increased. May be decreased without reservation.
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* @dx_query_ctx: DX context if this buffer object is used as a DX query MOB
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* @dirty: structure for user-space dirty-tracking
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*/
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struct vmw_bo {
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struct ttm_buffer_object tbo;
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struct ttm_placement placement;
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struct ttm_place places[5];
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struct ttm_place busy_places[5];
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/* Protected by reservation */
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struct ttm_bo_kmap_obj map;
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struct rb_root res_tree;
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u32 res_prios[TTM_MAX_BO_PRIORITY];
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atomic_t cpu_writers;
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/* Not ref-counted. Protected by binding_mutex */
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struct vmw_resource *dx_query_ctx;
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struct vmw_bo_dirty *dirty;
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};
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void vmw_bo_placement_set(struct vmw_bo *bo, u32 domain, u32 busy_domain);
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void vmw_bo_placement_set_default_accelerated(struct vmw_bo *bo);
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int vmw_bo_create(struct vmw_private *dev_priv,
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struct vmw_bo_params *params,
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struct vmw_bo **p_bo);
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int vmw_bo_unref_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv);
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int vmw_bo_pin_in_vram(struct vmw_private *dev_priv,
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struct vmw_bo *buf,
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bool interruptible);
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int vmw_bo_pin_in_vram_or_gmr(struct vmw_private *dev_priv,
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struct vmw_bo *buf,
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bool interruptible);
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int vmw_bo_pin_in_start_of_vram(struct vmw_private *vmw_priv,
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struct vmw_bo *bo,
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bool interruptible);
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void vmw_bo_pin_reserved(struct vmw_bo *bo, bool pin);
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int vmw_bo_unpin(struct vmw_private *vmw_priv,
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struct vmw_bo *bo,
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bool interruptible);
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void vmw_bo_get_guest_ptr(const struct ttm_buffer_object *buf,
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SVGAGuestPtr *ptr);
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int vmw_user_bo_synccpu_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv);
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void vmw_bo_fence_single(struct ttm_buffer_object *bo,
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struct vmw_fence_obj *fence);
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void *vmw_bo_map_and_cache(struct vmw_bo *vbo);
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void vmw_bo_unmap(struct vmw_bo *vbo);
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void vmw_bo_move_notify(struct ttm_buffer_object *bo,
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struct ttm_resource *mem);
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void vmw_bo_swap_notify(struct ttm_buffer_object *bo);
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int vmw_user_bo_lookup(struct drm_file *filp,
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u32 handle,
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struct vmw_bo **out);
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/**
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* vmw_bo_adjust_prio - Adjust the buffer object eviction priority
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* according to attached resources
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* @vbo: The struct vmw_bo
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*/
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static inline void vmw_bo_prio_adjust(struct vmw_bo *vbo)
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{
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int i = ARRAY_SIZE(vbo->res_prios);
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while (i--) {
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if (vbo->res_prios[i]) {
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vbo->tbo.priority = i;
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return;
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}
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}
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vbo->tbo.priority = 3;
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}
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/**
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* vmw_bo_prio_add - Notify a buffer object of a newly attached resource
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* eviction priority
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* @vbo: The struct vmw_bo
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* @prio: The resource priority
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*
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* After being notified, the code assigns the highest resource eviction priority
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* to the backing buffer object (mob).
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*/
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static inline void vmw_bo_prio_add(struct vmw_bo *vbo, int prio)
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{
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if (vbo->res_prios[prio]++ == 0)
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vmw_bo_prio_adjust(vbo);
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}
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/**
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* vmw_bo_used_prio_del - Notify a buffer object of a resource with a certain
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* priority being removed
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* @vbo: The struct vmw_bo
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* @prio: The resource priority
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*
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* After being notified, the code assigns the highest resource eviction priority
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* to the backing buffer object (mob).
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*/
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static inline void vmw_bo_prio_del(struct vmw_bo *vbo, int prio)
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{
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if (--vbo->res_prios[prio] == 0)
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vmw_bo_prio_adjust(vbo);
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}
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static inline void vmw_bo_unreference(struct vmw_bo **buf)
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{
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struct vmw_bo *tmp_buf = *buf;
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*buf = NULL;
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if (tmp_buf)
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ttm_bo_put(&tmp_buf->tbo);
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}
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static inline struct vmw_bo *vmw_bo_reference(struct vmw_bo *buf)
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{
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ttm_bo_get(&buf->tbo);
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return buf;
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}
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static inline struct vmw_bo *to_vmw_bo(struct drm_gem_object *gobj)
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{
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return container_of((gobj), struct vmw_bo, tbo.base);
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}
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#endif // VMWGFX_BO_H
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