diff options
Diffstat (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_bo.h')
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_bo.h | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_bo.h b/drivers/gpu/drm/vmwgfx/vmwgfx_bo.h new file mode 100644 index 000000000000..498767d937c7 --- /dev/null +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_bo.h @@ -0,0 +1,189 @@ +/* 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 <linux/rbtree_types.h> +#include <linux/types.h> + +struct vmw_bo_dirty; +struct vmw_fence_obj; +struct vmw_private; +struct vmw_resource; + +/** + * struct vmw_bo - TTM buffer object with vmwgfx additions + * @base: The TTM buffer object + * @res_tree: RB tree of resources using this buffer object as a backing MOB + * @base_mapped_count: ttm BO mapping count; used by KMS atomic helpers. + * @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 + * @map: Kmap object for semi-persistent mappings + * @res_prios: Eviction priority counts for attached resources + * @dirty: structure for user-space dirty-tracking + */ +struct vmw_bo { + struct ttm_buffer_object base; + struct rb_root res_tree; + /* For KMS atomic helpers: ttm bo mapping count */ + atomic_t base_mapped_count; + + atomic_t cpu_writers; + /* Not ref-counted. Protected by binding_mutex */ + struct vmw_resource *dx_query_ctx; + /* Protected by reservation */ + struct ttm_bo_kmap_obj map; + u32 res_prios[TTM_MAX_BO_PRIORITY]; + struct vmw_bo_dirty *dirty; +}; + +int vmw_bo_create_kernel(struct vmw_private *dev_priv, + unsigned long size, + struct ttm_placement *placement, + struct ttm_buffer_object **p_bo); +int vmw_bo_create(struct vmw_private *dev_priv, + size_t size, struct ttm_placement *placement, + bool interruptible, bool pin, + struct vmw_bo **p_bo); +int vmw_bo_init(struct vmw_private *dev_priv, + struct vmw_bo *vmw_bo, + size_t size, struct ttm_placement *placement, + bool interruptible, bool pin); +int vmw_bo_unref_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv); + +int vmw_bo_pin_in_placement(struct vmw_private *vmw_priv, + struct vmw_bo *bo, + struct ttm_placement *placement, + bool interruptible); +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); +int vmw_user_bo_lookup(struct drm_file *filp, + uint32_t handle, + struct vmw_bo **out); +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); + +/** + * 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->base.priority = i; + return; + } + } + + vbo->base.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_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->base); +} + +static inline struct vmw_bo *vmw_bo_reference(struct vmw_bo *buf) +{ + ttm_bo_get(&buf->base); + return buf; +} + +static inline struct vmw_bo *to_vmw_bo(struct drm_gem_object *gobj) +{ + return container_of((gobj), struct vmw_bo, base.base); +} + +#endif // VMWGFX_BO_H |