forked from mirrors/linux
6ada132864
Use new return type vm_fault_t for fault handler. For
now, this is just documenting that the function returns
a VM_FAULT value rather than an errno. Once all instances
are converted, vm_fault_t will become a distinct type.
Ref-> commit 1c8f422059 ("mm: change return type to vm_fault_t")
Previously vm_insert_mixed() returns err which driver
mapped into VM_FAULT_* type. Also return value of
vm_insert_mixed() not handled correctly and 0 was
returned inside fault_2d() as default. The new function
vmf_insert_mixed() will replace this inefficiency by
returning correct VM_FAULT_* type.
vmf_error() is the newly introduce inline function
in 4.17-rc6.
Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Reviewed-by: Matthew Wilcox <mawilcox@microsoft.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
100 lines
3.4 KiB
C
100 lines
3.4 KiB
C
/*
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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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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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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_free_object(struct drm_gem_object *obj);
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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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int omap_gem_mmap(struct file *filp, struct vm_area_struct *vma);
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int omap_gem_mmap_obj(struct drm_gem_object *obj,
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struct vm_area_struct *vma);
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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_device *dev,
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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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vm_fault_t omap_gem_fault(struct vm_fault *vmf);
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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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#endif /* __OMAPDRM_GEM_H__ */
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