From 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 12:05:51 +0200 Subject: Adding upstream version 5.10.209. Signed-off-by: Daniel Baumann --- include/drm/drm_gem_shmem_helper.h | 168 +++++++++++++++++++++++++++++++++++++ 1 file changed, 168 insertions(+) create mode 100644 include/drm/drm_gem_shmem_helper.h (limited to 'include/drm/drm_gem_shmem_helper.h') diff --git a/include/drm/drm_gem_shmem_helper.h b/include/drm/drm_gem_shmem_helper.h new file mode 100644 index 000000000..5381f0c8c --- /dev/null +++ b/include/drm/drm_gem_shmem_helper.h @@ -0,0 +1,168 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef __DRM_GEM_SHMEM_HELPER_H__ +#define __DRM_GEM_SHMEM_HELPER_H__ + +#include +#include +#include + +#include +#include +#include +#include + +struct dma_buf_attachment; +struct drm_mode_create_dumb; +struct drm_printer; +struct sg_table; + +/** + * struct drm_gem_shmem_object - GEM object backed by shmem + */ +struct drm_gem_shmem_object { + /** + * @base: Base GEM object + */ + struct drm_gem_object base; + + /** + * @pages_lock: Protects the page table and use count + */ + struct mutex pages_lock; + + /** + * @pages: Page table + */ + struct page **pages; + + /** + * @pages_use_count: + * + * Reference count on the pages table. + * The pages are put when the count reaches zero. + */ + unsigned int pages_use_count; + + /** + * @madv: State for madvise + * + * 0 is active/inuse. + * A negative value is the object is purged. + * Positive values are driver specific and not used by the helpers. + */ + int madv; + + /** + * @madv_list: List entry for madvise tracking + * + * Typically used by drivers to track purgeable objects + */ + struct list_head madv_list; + + /** + * @pages_mark_dirty_on_put: + * + * Mark pages as dirty when they are put. + */ + unsigned int pages_mark_dirty_on_put : 1; + + /** + * @pages_mark_accessed_on_put: + * + * Mark pages as accessed when they are put. + */ + unsigned int pages_mark_accessed_on_put : 1; + + /** + * @sgt: Scatter/gather table for imported PRIME buffers + */ + struct sg_table *sgt; + + /** + * @vmap_lock: Protects the vmap address and use count + */ + struct mutex vmap_lock; + + /** + * @vaddr: Kernel virtual address of the backing memory + */ + void *vaddr; + + /** + * @vmap_use_count: + * + * Reference count on the virtual address. + * The address are un-mapped when the count reaches zero. + */ + unsigned int vmap_use_count; + + /** + * @map_cached: map object cached (instead of using writecombine). + */ + bool map_cached; +}; + +#define to_drm_gem_shmem_obj(obj) \ + container_of(obj, struct drm_gem_shmem_object, base) + +struct drm_gem_shmem_object *drm_gem_shmem_create(struct drm_device *dev, size_t size); +void drm_gem_shmem_free_object(struct drm_gem_object *obj); + +int drm_gem_shmem_get_pages(struct drm_gem_shmem_object *shmem); +void drm_gem_shmem_put_pages(struct drm_gem_shmem_object *shmem); +int drm_gem_shmem_pin(struct drm_gem_object *obj); +void drm_gem_shmem_unpin(struct drm_gem_object *obj); +void *drm_gem_shmem_vmap(struct drm_gem_object *obj); +void drm_gem_shmem_vunmap(struct drm_gem_object *obj, void *vaddr); + +int drm_gem_shmem_madvise(struct drm_gem_object *obj, int madv); + +static inline bool drm_gem_shmem_is_purgeable(struct drm_gem_shmem_object *shmem) +{ + return (shmem->madv > 0) && + !shmem->vmap_use_count && shmem->sgt && + !shmem->base.dma_buf && !shmem->base.import_attach; +} + +void drm_gem_shmem_purge_locked(struct drm_gem_object *obj); +bool drm_gem_shmem_purge(struct drm_gem_object *obj); + +struct drm_gem_shmem_object * +drm_gem_shmem_create_with_handle(struct drm_file *file_priv, + struct drm_device *dev, size_t size, + uint32_t *handle); + +struct drm_gem_object * +drm_gem_shmem_create_object_cached(struct drm_device *dev, size_t size); + +int drm_gem_shmem_dumb_create(struct drm_file *file, struct drm_device *dev, + struct drm_mode_create_dumb *args); + +int drm_gem_shmem_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma); + +void drm_gem_shmem_print_info(struct drm_printer *p, unsigned int indent, + const struct drm_gem_object *obj); + +struct sg_table *drm_gem_shmem_get_sg_table(struct drm_gem_object *obj); +struct drm_gem_object * +drm_gem_shmem_prime_import_sg_table(struct drm_device *dev, + struct dma_buf_attachment *attach, + struct sg_table *sgt); + +struct sg_table *drm_gem_shmem_get_pages_sgt(struct drm_gem_object *obj); + +/** + * DRM_GEM_SHMEM_DRIVER_OPS - Default shmem GEM operations + * + * This macro provides a shortcut for setting the shmem GEM operations in + * the &drm_driver structure. + */ +#define DRM_GEM_SHMEM_DRIVER_OPS \ + .prime_handle_to_fd = drm_gem_prime_handle_to_fd, \ + .prime_fd_to_handle = drm_gem_prime_fd_to_handle, \ + .gem_prime_import_sg_table = drm_gem_shmem_prime_import_sg_table, \ + .gem_prime_mmap = drm_gem_prime_mmap, \ + .dumb_create = drm_gem_shmem_dumb_create + +#endif /* __DRM_GEM_SHMEM_HELPER_H__ */ -- cgit v1.2.3