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7938f42181
Rename struct dma_buf_map to struct iosys_map and corresponding APIs. Over time dma-buf-map grew up to more functionality than the one used by dma-buf: in fact it's just a shim layer to abstract system memory, that can be accessed via regular load and store, from IO memory that needs to be acessed via arch helpers. The idea is to extend this API so it can fulfill other needs, internal to a single driver. Example: in the i915 driver it's desired to share the implementation for integrated graphics, which uses mostly system memory, with discrete graphics, which may need to access IO memory. The conversion was mostly done with the following semantic patch: @r1@ @@ - struct dma_buf_map + struct iosys_map @r2@ @@ ( - DMA_BUF_MAP_INIT_VADDR + IOSYS_MAP_INIT_VADDR | - dma_buf_map_set_vaddr + iosys_map_set_vaddr | - dma_buf_map_set_vaddr_iomem + iosys_map_set_vaddr_iomem | - dma_buf_map_is_equal + iosys_map_is_equal | - dma_buf_map_is_null + iosys_map_is_null | - dma_buf_map_is_set + iosys_map_is_set | - dma_buf_map_clear + iosys_map_clear | - dma_buf_map_memcpy_to + iosys_map_memcpy_to | - dma_buf_map_incr + iosys_map_incr ) @@ @@ - #include <linux/dma-buf-map.h> + #include <linux/iosys-map.h> Then some files had their includes adjusted and some comments were update to remove mentions to dma-buf-map. Since this is not specific to dma-buf anymore, move the documentation to the "Bus-Independent Device Accesses" section. v2: - Squash patches v3: - Fix wrong removal of dma-buf.h from MAINTAINERS - Move documentation from dma-buf.rst to device-io.rst v4: - Change documentation title and level Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com> Acked-by: Christian König <christian.koenig@amd.com> Acked-by: Sumit Semwal <sumit.semwal@linaro.org> Acked-by: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/20220204170541.829227-1-lucas.demarchi@intel.com
57 lines
2 KiB
C
57 lines
2 KiB
C
#ifndef __DRM_GEM_FB_HELPER_H__
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#define __DRM_GEM_FB_HELPER_H__
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#include <linux/dma-buf.h>
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#include <linux/iosys-map.h>
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#include <drm/drm_fourcc.h>
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struct drm_afbc_framebuffer;
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struct drm_device;
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struct drm_fb_helper_surface_size;
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struct drm_file;
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struct drm_framebuffer;
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struct drm_framebuffer_funcs;
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struct drm_gem_object;
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struct drm_mode_fb_cmd2;
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#define AFBC_VENDOR_AND_TYPE_MASK GENMASK_ULL(63, 52)
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struct drm_gem_object *drm_gem_fb_get_obj(struct drm_framebuffer *fb,
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unsigned int plane);
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void drm_gem_fb_destroy(struct drm_framebuffer *fb);
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int drm_gem_fb_create_handle(struct drm_framebuffer *fb, struct drm_file *file,
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unsigned int *handle);
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int drm_gem_fb_init_with_funcs(struct drm_device *dev,
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struct drm_framebuffer *fb,
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struct drm_file *file,
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const struct drm_mode_fb_cmd2 *mode_cmd,
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const struct drm_framebuffer_funcs *funcs);
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struct drm_framebuffer *
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drm_gem_fb_create_with_funcs(struct drm_device *dev, struct drm_file *file,
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const struct drm_mode_fb_cmd2 *mode_cmd,
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const struct drm_framebuffer_funcs *funcs);
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struct drm_framebuffer *
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drm_gem_fb_create(struct drm_device *dev, struct drm_file *file,
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const struct drm_mode_fb_cmd2 *mode_cmd);
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struct drm_framebuffer *
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drm_gem_fb_create_with_dirty(struct drm_device *dev, struct drm_file *file,
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const struct drm_mode_fb_cmd2 *mode_cmd);
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int drm_gem_fb_vmap(struct drm_framebuffer *fb,
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struct iosys_map map[static DRM_FORMAT_MAX_PLANES],
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struct iosys_map data[DRM_FORMAT_MAX_PLANES]);
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void drm_gem_fb_vunmap(struct drm_framebuffer *fb,
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struct iosys_map map[static DRM_FORMAT_MAX_PLANES]);
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int drm_gem_fb_begin_cpu_access(struct drm_framebuffer *fb, enum dma_data_direction dir);
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void drm_gem_fb_end_cpu_access(struct drm_framebuffer *fb, enum dma_data_direction dir);
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#define drm_is_afbc(modifier) \
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(((modifier) & AFBC_VENDOR_AND_TYPE_MASK) == DRM_FORMAT_MOD_ARM_AFBC(0))
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int drm_gem_fb_afbc_init(struct drm_device *dev,
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const struct drm_mode_fb_cmd2 *mode_cmd,
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struct drm_afbc_framebuffer *afbc_fb);
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#endif
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