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2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

 kernel/include/drm/drm_gem_cma_helper.h
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@@ -2,8 +2,11 @@
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 #ifndef __DRM_GEM_CMA_HELPER_H__
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 #define __DRM_GEM_CMA_HELPER_H__
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-#include <drm/drmP.h>
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+#include <drm/drm_file.h>
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+#include <drm/drm_ioctl.h>
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 #include <drm/drm_gem.h>
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+
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+struct drm_mode_create_dumb;
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 /**
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  * struct drm_gem_cma_object - GEM object backed by CMA memory allocations
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@@ -103,4 +106,90 @@
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 void *drm_gem_cma_prime_vmap(struct drm_gem_object *obj);
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 void drm_gem_cma_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
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+struct drm_gem_object *
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+drm_gem_cma_create_object_default_funcs(struct drm_device *dev, size_t size);
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+
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+/**
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+ * DRM_GEM_CMA_DRIVER_OPS_WITH_DUMB_CREATE - CMA GEM driver operations
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+ * @dumb_create_func: callback function for .dumb_create
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+ *
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+ * This macro provides a shortcut for setting the default GEM operations in the
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+ * &drm_driver structure.
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+ *
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+ * This macro is a variant of DRM_GEM_CMA_DRIVER_OPS for drivers that
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+ * override the default implementation of &struct rm_driver.dumb_create. Use
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+ * DRM_GEM_CMA_DRIVER_OPS if possible. Drivers that require a virtual address
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+ * on imported buffers should use
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+ * DRM_GEM_CMA_DRIVER_OPS_VMAP_WITH_DUMB_CREATE() instead.
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+ */
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+#define DRM_GEM_CMA_DRIVER_OPS_WITH_DUMB_CREATE(dumb_create_func) \
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+	.gem_create_object	= drm_gem_cma_create_object_default_funcs, \
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+	.dumb_create		= (dumb_create_func), \
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+	.prime_handle_to_fd	= drm_gem_prime_handle_to_fd, \
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+	.prime_fd_to_handle	= drm_gem_prime_fd_to_handle, \
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+	.gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table, \
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+	.gem_prime_mmap		= drm_gem_cma_prime_mmap
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+
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+/**
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+ * DRM_GEM_CMA_DRIVER_OPS - CMA GEM driver operations
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+ *
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+ * This macro provides a shortcut for setting the default GEM operations in the
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+ * &drm_driver structure.
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+ *
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+ * Drivers that come with their own implementation of
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+ * &struct drm_driver.dumb_create should use
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+ * DRM_GEM_CMA_DRIVER_OPS_WITH_DUMB_CREATE() instead. Use
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+ * DRM_GEM_CMA_DRIVER_OPS if possible. Drivers that require a virtual address
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+ * on imported buffers should use DRM_GEM_CMA_DRIVER_OPS_VMAP instead.
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+ */
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+#define DRM_GEM_CMA_DRIVER_OPS \
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+	DRM_GEM_CMA_DRIVER_OPS_WITH_DUMB_CREATE(drm_gem_cma_dumb_create)
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+
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+/**
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+ * DRM_GEM_CMA_DRIVER_OPS_VMAP_WITH_DUMB_CREATE - CMA GEM driver operations
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+ *                                                ensuring a virtual address
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+ *                                                on the buffer
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+ * @dumb_create_func: callback function for .dumb_create
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+ *
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+ * This macro provides a shortcut for setting the default GEM operations in the
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+ * &drm_driver structure for drivers that need the virtual address also on
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+ * imported buffers.
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+ *
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+ * This macro is a variant of DRM_GEM_CMA_DRIVER_OPS_VMAP for drivers that
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+ * override the default implementation of &struct drm_driver.dumb_create. Use
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+ * DRM_GEM_CMA_DRIVER_OPS_VMAP if possible. Drivers that do not require a
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+ * virtual address on imported buffers should use
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+ * DRM_GEM_CMA_DRIVER_OPS_WITH_DUMB_CREATE() instead.
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+ */
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+#define DRM_GEM_CMA_DRIVER_OPS_VMAP_WITH_DUMB_CREATE(dumb_create_func) \
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+	.gem_create_object	= drm_gem_cma_create_object_default_funcs, \
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+	.dumb_create		= dumb_create_func, \
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+	.prime_handle_to_fd	= drm_gem_prime_handle_to_fd, \
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+	.prime_fd_to_handle	= drm_gem_prime_fd_to_handle, \
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+	.gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table_vmap, \
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+	.gem_prime_mmap		= drm_gem_prime_mmap
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+
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+/**
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+ * DRM_GEM_CMA_DRIVER_OPS_VMAP - CMA GEM driver operations ensuring a virtual
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+ *                               address on the buffer
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+ *
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+ * This macro provides a shortcut for setting the default GEM operations in the
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+ * &drm_driver structure for drivers that need the virtual address also on
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+ * imported buffers.
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+ *
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+ * Drivers that come with their own implementation of
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+ * &struct drm_driver.dumb_create should use
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+ * DRM_GEM_CMA_DRIVER_OPS_VMAP_WITH_DUMB_CREATE() instead. Use
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+ * DRM_GEM_CMA_DRIVER_OPS_VMAP if possible. Drivers that do not require a
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+ * virtual address on imported buffers should use DRM_GEM_CMA_DRIVER_OPS
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+ * instead.
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+ */
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+#define DRM_GEM_CMA_DRIVER_OPS_VMAP \
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+	DRM_GEM_CMA_DRIVER_OPS_VMAP_WITH_DUMB_CREATE(drm_gem_cma_dumb_create)
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+
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+struct drm_gem_object *
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+drm_gem_cma_prime_import_sg_table_vmap(struct drm_device *drm,
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+				       struct dma_buf_attachment *attach,
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+				       struct sg_table *sgt);
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+
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 #endif /* __DRM_GEM_CMA_HELPER_H__ */