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