diff options
Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_drm_gem.h')
-rw-r--r-- | drivers/gpu/drm/exynos/exynos_drm_gem.h | 75 |
1 files changed, 46 insertions, 29 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.h b/drivers/gpu/drm/exynos/exynos_drm_gem.h index e5fc0148277b..67cdc9168708 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_gem.h +++ b/drivers/gpu/drm/exynos/exynos_drm_gem.h @@ -30,13 +30,29 @@ struct exynos_drm_gem_obj, base) /* + * exynos drm gem buffer structure. + * + * @kvaddr: kernel virtual address to allocated memory region. + * @dma_addr: bus address(accessed by dma) to allocated memory region. + * - this address could be physical address without IOMMU and + * device address with IOMMU. + * @size: size of allocated memory region. + */ +struct exynos_drm_gem_buf { + void __iomem *kvaddr; + dma_addr_t dma_addr; + unsigned long size; +}; + +/* * exynos drm buffer structure. * * @base: a gem object. * - a new handle to this gem object would be created * by drm_gem_handle_create(). - * @entry: pointer to exynos drm buffer entry object. - * - containing the information to physically + * @buffer: a pointer to exynos_drm_gem_buffer object. + * - contain the information to memory region allocated + * by user request or at framebuffer creation. * continuous memory region allocated by user request * or at framebuffer creation. * @@ -44,14 +60,16 @@ * user can access the buffer through kms_bo.handle. */ struct exynos_drm_gem_obj { - struct drm_gem_object base; - struct exynos_drm_buf_entry *entry; + struct drm_gem_object base; + struct exynos_drm_gem_buf *buffer; }; -/* create a new buffer and get a new gem handle. */ -struct exynos_drm_gem_obj *exynos_drm_gem_create(struct drm_file *file_priv, - struct drm_device *dev, unsigned int size, - unsigned int *handle); +/* destroy a buffer with gem object */ +void exynos_drm_gem_destroy(struct exynos_drm_gem_obj *exynos_gem_obj); + +/* create a new buffer with gem object */ +struct exynos_drm_gem_obj *exynos_drm_gem_create(struct drm_device *dev, + unsigned long size); /* * request gem object creation and buffer allocation as the size @@ -59,15 +77,18 @@ struct exynos_drm_gem_obj *exynos_drm_gem_create(struct drm_file *file_priv, * height and bpp. */ int exynos_drm_gem_create_ioctl(struct drm_device *dev, void *data, - struct drm_file *file_priv); + struct drm_file *file_priv); /* get buffer offset to map to user space. */ int exynos_drm_gem_map_offset_ioctl(struct drm_device *dev, void *data, - struct drm_file *file_priv); + struct drm_file *file_priv); -/* unmap a buffer from user space. */ -int exynos_drm_gem_munmap_ioctl(struct drm_device *dev, void *data, - struct drm_file *file_priv); +/* + * mmap the physically continuous memory that a gem object contains + * to user space. + */ +int exynos_drm_gem_mmap_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv); /* initialize gem object. */ int exynos_drm_gem_init_object(struct drm_gem_object *obj); @@ -77,24 +98,13 @@ void exynos_drm_gem_free_object(struct drm_gem_object *gem_obj); /* create memory region for drm framebuffer. */ int exynos_drm_gem_dumb_create(struct drm_file *file_priv, - struct drm_device *dev, struct drm_mode_create_dumb *args); + struct drm_device *dev, + struct drm_mode_create_dumb *args); /* map memory region for drm framebuffer to user space. */ int exynos_drm_gem_dumb_map_offset(struct drm_file *file_priv, - struct drm_device *dev, uint32_t handle, uint64_t *offset); - -/* page fault handler and mmap fault address(virtual) to physical memory. */ -int exynos_drm_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf); - -/* - * mmap the physically continuous memory that a gem object contains - * to user space. - */ -int exynos_drm_gem_mmap_ioctl(struct drm_device *dev, void *data, - struct drm_file *file_priv); - -/* set vm_flags and we can change the vm attribute to other one at here. */ -int exynos_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma); + struct drm_device *dev, uint32_t handle, + uint64_t *offset); /* * destroy memory region allocated. @@ -102,6 +112,13 @@ int exynos_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma); * would be released by drm_gem_handle_delete(). */ int exynos_drm_gem_dumb_destroy(struct drm_file *file_priv, - struct drm_device *dev, unsigned int handle); + struct drm_device *dev, + unsigned int handle); + +/* page fault handler and mmap fault address(virtual) to physical memory. */ +int exynos_drm_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf); + +/* set vm_flags and we can change the vm attribute to other one at here. */ +int exynos_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma); #endif |