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Memory of BOs backed by TILER is not contiguous, but omap_gem_map_dma_buf() exports it like it is. This leads to (possibly) invalid memory accesses if another device imports such a BO. Fix that by providing sg that correctly describes TILER memory layout. Align TILER allocations to page, so importer to be able to correctly set its MMU if have one. Set export size accounting for the alignment. Also, make sure to destroy sg on unpin, as it is no longer valid. Tested on Motorola Droid4 by using GPU (sgx540) to render. Suggested-by: Matthijs van Duin <matthijsvanduin@gmail.com> Signed-off-by: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com> Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Link: https://patchwork.freedesktop.org/patch/msgid/1637309180-31032-1-git-send-email-ivo.g.dimitrov.75@gmail.com
89 lines
2.8 KiB
C
89 lines
2.8 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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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_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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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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