From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/include/drm/drm_gem_cma_helper.h | 70 +++++++++++++++++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 kernel/include/drm/drm_gem_cma_helper.h (limited to 'kernel/include/drm/drm_gem_cma_helper.h') diff --git a/kernel/include/drm/drm_gem_cma_helper.h b/kernel/include/drm/drm_gem_cma_helper.h new file mode 100644 index 000000000..acd6af8a8 --- /dev/null +++ b/kernel/include/drm/drm_gem_cma_helper.h @@ -0,0 +1,70 @@ +#ifndef __DRM_GEM_CMA_HELPER_H__ +#define __DRM_GEM_CMA_HELPER_H__ + +#include +#include + +/** + * struct drm_gem_cma_object - GEM object backed by CMA memory allocations + * @base: base GEM object + * @paddr: physical address of the backing memory + * @sgt: scatter/gather table for imported PRIME buffers + * @vaddr: kernel virtual address of the backing memory + */ +struct drm_gem_cma_object { + struct drm_gem_object base; + dma_addr_t paddr; + struct sg_table *sgt; + + /* For objects with DMA memory allocated by GEM CMA */ + void *vaddr; +}; + +static inline struct drm_gem_cma_object * +to_drm_gem_cma_obj(struct drm_gem_object *gem_obj) +{ + return container_of(gem_obj, struct drm_gem_cma_object, base); +} + +/* free GEM object */ +void drm_gem_cma_free_object(struct drm_gem_object *gem_obj); + +/* create memory region for DRM framebuffer */ +int drm_gem_cma_dumb_create_internal(struct drm_file *file_priv, + struct drm_device *drm, + struct drm_mode_create_dumb *args); + +/* create memory region for DRM framebuffer */ +int drm_gem_cma_dumb_create(struct drm_file *file_priv, + struct drm_device *drm, + struct drm_mode_create_dumb *args); + +/* map memory region for DRM framebuffer to user space */ +int drm_gem_cma_dumb_map_offset(struct drm_file *file_priv, + struct drm_device *drm, u32 handle, + u64 *offset); + +/* set vm_flags and we can change the VM attribute to other one at here */ +int drm_gem_cma_mmap(struct file *filp, struct vm_area_struct *vma); + +/* allocate physical memory */ +struct drm_gem_cma_object *drm_gem_cma_create(struct drm_device *drm, + size_t size); + +extern const struct vm_operations_struct drm_gem_cma_vm_ops; + +#ifdef CONFIG_DEBUG_FS +void drm_gem_cma_describe(struct drm_gem_cma_object *obj, struct seq_file *m); +#endif + +struct sg_table *drm_gem_cma_prime_get_sg_table(struct drm_gem_object *obj); +struct drm_gem_object * +drm_gem_cma_prime_import_sg_table(struct drm_device *dev, + struct dma_buf_attachment *attach, + struct sg_table *sgt); +int drm_gem_cma_prime_mmap(struct drm_gem_object *obj, + struct vm_area_struct *vma); +void *drm_gem_cma_prime_vmap(struct drm_gem_object *obj); +void drm_gem_cma_prime_vunmap(struct drm_gem_object *obj, void *vaddr); + +#endif /* __DRM_GEM_CMA_HELPER_H__ */ -- cgit 1.2.3-korg