forked from mirrors/linux
413b75745f
Use the mmap callback in struct drm_gem_object_funcs to set the VM flags. Replace a number of mmap helpers in omapdrm with their GEM helper counterparts. Generate DRM's file-operations instance with GEM's DEFINE_DRM_GEM_FOPS. The omapdrm driver uses DRM's drm_gem_mmap() helper to prepare the VMA structure. It then modifies the resulting VMA state in its own helper omap_gem_mmap_obj(). The patch improves this by setting up the VMA in the mmap callback in drm_gem_object_funcs, which is called from within drm_gem_mmap(). Omapdrm's omap_gem_mmap() and omap_gem_mmap() can then be removed from the driver. A call to drm_gem_mmap() is sufficient for the mmap operation. Finally, with the omap functions gone, the drivers file_ops in omapdriver_fops can be generated with DEFINE_DRM_GEM_FOPS, which sets DRM's default helpers. v2: * detailed commit message (Javier) * do not set VM_PFNMAP Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Acked-by: Maxime Ripard <mripard@kernel.org> Cc: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230707083422.18691-9-tzimmermann@suse.de
86 lines
2.7 KiB
C
86 lines
2.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* omap_gem.h -- OMAP DRM GEM Object Management
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*
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* Copyright (C) 2011 Texas Instruments
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* Author: Rob Clark <rob@ti.com>
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*/
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#ifndef __OMAPDRM_GEM_H__
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#define __OMAPDRM_GEM_H__
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#include <linux/types.h>
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#include <linux/mm_types.h>
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enum dma_data_direction;
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struct dma_buf;
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struct drm_device;
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struct drm_file;
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struct drm_gem_object;
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struct drm_mode_create_dumb;
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struct file;
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struct list_head;
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struct page;
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struct seq_file;
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struct vm_area_struct;
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struct vm_fault;
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union omap_gem_size;
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/* Initialization and Cleanup */
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void omap_gem_init(struct drm_device *dev);
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void omap_gem_deinit(struct drm_device *dev);
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#ifdef CONFIG_PM
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int omap_gem_resume(struct drm_device *dev);
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#endif
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#ifdef CONFIG_DEBUG_FS
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void omap_gem_describe(struct drm_gem_object *obj, struct seq_file *m);
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void omap_gem_describe_objects(struct list_head *list, struct seq_file *m);
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#endif
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/* GEM Object Creation and Deletion */
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struct drm_gem_object *omap_gem_new(struct drm_device *dev,
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union omap_gem_size gsize, u32 flags);
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struct drm_gem_object *omap_gem_new_dmabuf(struct drm_device *dev, size_t size,
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struct sg_table *sgt);
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int omap_gem_new_handle(struct drm_device *dev, struct drm_file *file,
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union omap_gem_size gsize, u32 flags, u32 *handle);
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void *omap_gem_vaddr(struct drm_gem_object *obj);
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/* Dumb Buffers Interface */
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int omap_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev,
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u32 handle, u64 *offset);
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int omap_gem_dumb_create(struct drm_file *file, struct drm_device *dev,
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struct drm_mode_create_dumb *args);
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/* mmap() Interface */
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u64 omap_gem_mmap_offset(struct drm_gem_object *obj);
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size_t omap_gem_mmap_size(struct drm_gem_object *obj);
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/* PRIME Interface */
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struct dma_buf *omap_gem_prime_export(struct drm_gem_object *obj, int flags);
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struct drm_gem_object *omap_gem_prime_import(struct drm_device *dev,
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struct dma_buf *buffer);
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int omap_gem_roll(struct drm_gem_object *obj, u32 roll);
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void omap_gem_cpu_sync_page(struct drm_gem_object *obj, int pgoff);
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void omap_gem_dma_sync_buffer(struct drm_gem_object *obj,
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enum dma_data_direction dir);
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int omap_gem_pin(struct drm_gem_object *obj, dma_addr_t *dma_addr);
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void omap_gem_unpin(struct drm_gem_object *obj);
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int omap_gem_get_pages(struct drm_gem_object *obj, struct page ***pages,
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bool remap);
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int omap_gem_put_pages(struct drm_gem_object *obj);
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u32 omap_gem_flags(struct drm_gem_object *obj);
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int omap_gem_rotated_dma_addr(struct drm_gem_object *obj, u32 orient,
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int x, int y, dma_addr_t *dma_addr);
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int omap_gem_tiled_stride(struct drm_gem_object *obj, u32 orient);
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struct sg_table *omap_gem_get_sg(struct drm_gem_object *obj,
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enum dma_data_direction dir);
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void omap_gem_put_sg(struct drm_gem_object *obj, struct sg_table *sgt);
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#endif /* __OMAPDRM_GEM_H__ */
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