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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
30 lines
861 B
C
30 lines
861 B
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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#ifndef DRM_GEM_TTM_HELPER_H
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#define DRM_GEM_TTM_HELPER_H
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#include <linux/container_of.h>
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#include <drm/drm_device.h>
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#include <drm/drm_gem.h>
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#include <drm/ttm/ttm_bo_api.h>
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#include <drm/ttm/ttm_bo_driver.h>
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struct iosys_map;
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#define drm_gem_ttm_of_gem(gem_obj) \
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container_of(gem_obj, struct ttm_buffer_object, base)
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void drm_gem_ttm_print_info(struct drm_printer *p, unsigned int indent,
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const struct drm_gem_object *gem);
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int drm_gem_ttm_vmap(struct drm_gem_object *gem,
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struct iosys_map *map);
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void drm_gem_ttm_vunmap(struct drm_gem_object *gem,
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struct iosys_map *map);
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int drm_gem_ttm_mmap(struct drm_gem_object *gem,
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struct vm_area_struct *vma);
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int drm_gem_ttm_dumb_map_offset(struct drm_file *file, struct drm_device *dev,
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uint32_t handle, uint64_t *offset);
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#endif
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