diff options
Diffstat (limited to 'drivers/staging/media/atomisp/pci/atomisp2/include/hmm/hmm_bo.h')
| -rw-r--r-- | drivers/staging/media/atomisp/pci/atomisp2/include/hmm/hmm_bo.h | 319 |
1 files changed, 0 insertions, 319 deletions
diff --git a/drivers/staging/media/atomisp/pci/atomisp2/include/hmm/hmm_bo.h b/drivers/staging/media/atomisp/pci/atomisp2/include/hmm/hmm_bo.h deleted file mode 100644 index bd44ebbc427c..000000000000 --- a/drivers/staging/media/atomisp/pci/atomisp2/include/hmm/hmm_bo.h +++ /dev/null @@ -1,319 +0,0 @@ -/* - * Support for Medifield PNW Camera Imaging ISP subsystem. - * - * Copyright (c) 2010 Intel Corporation. All Rights Reserved. - * - * Copyright (c) 2010 Silicon Hive www.siliconhive.com. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License version - * 2 as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * - */ - -#ifndef __HMM_BO_H__ -#define __HMM_BO_H__ - -#include <linux/kernel.h> -#include <linux/slab.h> -#include <linux/list.h> -#include <linux/spinlock.h> -#include <linux/mutex.h> -#include "mmu/isp_mmu.h" -#include "hmm/hmm_common.h" -#include "ia_css_types.h" - -#define check_bodev_null_return(bdev, exp) \ - check_null_return(bdev, exp, \ - "NULL hmm_bo_device.\n") - -#define check_bodev_null_return_void(bdev) \ - check_null_return_void(bdev, \ - "NULL hmm_bo_device.\n") - -#define check_bo_status_yes_goto(bo, _status, label) \ - var_not_equal_goto((bo->status & (_status)), (_status), \ - label, \ - "HMM buffer status not contain %s.\n", \ - #_status) - -#define check_bo_status_no_goto(bo, _status, label) \ - var_equal_goto((bo->status & (_status)), (_status), \ - label, \ - "HMM buffer status contains %s.\n", \ - #_status) - -#define rbtree_node_to_hmm_bo(root_node) \ - container_of((root_node), struct hmm_buffer_object, node) - -#define list_to_hmm_bo(list_ptr) \ - list_entry((list_ptr), struct hmm_buffer_object, list) - -#define kref_to_hmm_bo(kref_ptr) \ - list_entry((kref_ptr), struct hmm_buffer_object, kref) - -#define check_bo_null_return(bo, exp) \ - check_null_return(bo, exp, "NULL hmm buffer object.\n") - -#define check_bo_null_return_void(bo) \ - check_null_return_void(bo, "NULL hmm buffer object.\n") - -#define HMM_MAX_ORDER 3 -#define HMM_MIN_ORDER 0 - -#define ISP_VM_START 0x0 -#define ISP_VM_SIZE (0x7FFFFFFF) /* 2G address space */ -#define ISP_PTR_NULL NULL - -#define HMM_BO_DEVICE_INITED 0x1 - -enum hmm_bo_type { - HMM_BO_PRIVATE, - HMM_BO_SHARE, - HMM_BO_USER, -#ifdef CONFIG_ION - HMM_BO_ION, -#endif - HMM_BO_LAST, -}; - -enum hmm_page_type { - HMM_PAGE_TYPE_RESERVED, - HMM_PAGE_TYPE_DYNAMIC, - HMM_PAGE_TYPE_GENERAL, -}; - -#define HMM_BO_MASK 0x1 -#define HMM_BO_FREE 0x0 -#define HMM_BO_ALLOCED 0x1 -#define HMM_BO_PAGE_ALLOCED 0x2 -#define HMM_BO_BINDED 0x4 -#define HMM_BO_MMAPED 0x8 -#define HMM_BO_VMAPED 0x10 -#define HMM_BO_VMAPED_CACHED 0x20 -#define HMM_BO_ACTIVE 0x1000 -#define HMM_BO_MEM_TYPE_USER 0x1 -#define HMM_BO_MEM_TYPE_PFN 0x2 - -struct hmm_bo_device { - struct isp_mmu mmu; - - /* start/pgnr/size is used to record the virtual memory of this bo */ - unsigned int start; - unsigned int pgnr; - unsigned int size; - - /* list lock is used to protect the entire_bo_list */ - spinlock_t list_lock; -#ifdef CONFIG_ION - struct ion_client *iclient; -#endif - int flag; - - /* linked list for entire buffer object */ - struct list_head entire_bo_list; - /* rbtree for maintain entire allocated vm */ - struct rb_root allocated_rbtree; - /* rbtree for maintain entire free vm */ - struct rb_root free_rbtree; - struct mutex rbtree_mutex; - struct kmem_cache *bo_cache; -}; - -struct hmm_page_object { - struct page *page; - enum hmm_page_type type; -}; - -struct hmm_buffer_object { - struct hmm_bo_device *bdev; - struct list_head list; - struct kref kref; - - /* mutex protecting this BO */ - struct mutex mutex; - enum hmm_bo_type type; - struct hmm_page_object *page_obj; /* physical pages */ - int from_highmem; - int mmap_count; -#ifdef CONFIG_ION - struct ion_handle *ihandle; -#endif - int status; - int mem_type; - void *vmap_addr; /* kernel virtual address by vmap */ - - struct rb_node node; - unsigned int start; - unsigned int end; - unsigned int pgnr; - /* - * When insert a bo which has the same pgnr with an existed - * bo node in the free_rbtree, using "prev & next" pointer - * to maintain a bo linked list instead of insert this bo - * into free_rbtree directly, it will make sure each node - * in free_rbtree has different pgnr. - * "prev & next" default is NULL. - */ - struct hmm_buffer_object *prev; - struct hmm_buffer_object *next; -}; - -struct hmm_buffer_object *hmm_bo_alloc(struct hmm_bo_device *bdev, - unsigned int pgnr); - -void hmm_bo_release(struct hmm_buffer_object *bo); - -int hmm_bo_device_init(struct hmm_bo_device *bdev, - struct isp_mmu_client *mmu_driver, - unsigned int vaddr_start, unsigned int size); - -/* - * clean up all hmm_bo_device related things. - */ -void hmm_bo_device_exit(struct hmm_bo_device *bdev); - -/* - * whether the bo device is inited or not. - */ -int hmm_bo_device_inited(struct hmm_bo_device *bdev); - -/* - * increse buffer object reference. - */ -void hmm_bo_ref(struct hmm_buffer_object *bo); - -/* - * decrese buffer object reference. if reference reaches 0, - * release function of the buffer object will be called. - * - * this call is also used to release hmm_buffer_object or its - * upper level object with it embedded in. you need to call - * this function when it is no longer used. - * - * Note: - * - * user dont need to care about internal resource release of - * the buffer object in the release callback, it will be - * handled internally. - * - * this call will only release internal resource of the buffer - * object but will not free the buffer object itself, as the - * buffer object can be both pre-allocated statically or - * dynamically allocated. so user need to deal with the release - * of the buffer object itself manually. below example shows - * the normal case of using the buffer object. - * - * struct hmm_buffer_object *bo = hmm_bo_create(bdev, pgnr); - * ...... - * hmm_bo_unref(bo); - * - * or: - * - * struct hmm_buffer_object bo; - * - * hmm_bo_init(bdev, &bo, pgnr, NULL); - * ... - * hmm_bo_unref(&bo); - */ -void hmm_bo_unref(struct hmm_buffer_object *bo); - - -/* - * allocate/free physical pages for the bo. will try to alloc mem - * from highmem if from_highmem is set, and type indicate that the - * pages will be allocated by using video driver (for share buffer) - * or by ISP driver itself. - */ - - -int hmm_bo_allocated(struct hmm_buffer_object *bo); - - -/* - * allocate/free physical pages for the bo. will try to alloc mem - * from highmem if from_highmem is set, and type indicate that the - * pages will be allocated by using video driver (for share buffer) - * or by ISP driver itself. - */ -int hmm_bo_alloc_pages(struct hmm_buffer_object *bo, - enum hmm_bo_type type, int from_highmem, - void *userptr, bool cached); -void hmm_bo_free_pages(struct hmm_buffer_object *bo); -int hmm_bo_page_allocated(struct hmm_buffer_object *bo); - -/* - * get physical page info of the bo. - */ -int hmm_bo_get_page_info(struct hmm_buffer_object *bo, - struct hmm_page_object **page_obj, int *pgnr); - -/* - * bind/unbind the physical pages to a virtual address space. - */ -int hmm_bo_bind(struct hmm_buffer_object *bo); -void hmm_bo_unbind(struct hmm_buffer_object *bo); -int hmm_bo_binded(struct hmm_buffer_object *bo); - -/* - * vmap buffer object's pages to contiguous kernel virtual address. - * if the buffer has been vmaped, return the virtual address directly. - */ -void *hmm_bo_vmap(struct hmm_buffer_object *bo, bool cached); - -/* - * flush the cache for the vmapped buffer object's pages, - * if the buffer has not been vmapped, return directly. - */ -void hmm_bo_flush_vmap(struct hmm_buffer_object *bo); - -/* - * vunmap buffer object's kernel virtual address. - */ -void hmm_bo_vunmap(struct hmm_buffer_object *bo); - -/* - * mmap the bo's physical pages to specific vma. - * - * vma's address space size must be the same as bo's size, - * otherwise it will return -EINVAL. - * - * vma->vm_flags will be set to (VM_RESERVED | VM_IO). - */ -int hmm_bo_mmap(struct vm_area_struct *vma, - struct hmm_buffer_object *bo); - -extern struct hmm_pool dynamic_pool; -extern struct hmm_pool reserved_pool; - -/* - * find the buffer object by its virtual address vaddr. - * return NULL if no such buffer object found. - */ -struct hmm_buffer_object *hmm_bo_device_search_start( - struct hmm_bo_device *bdev, ia_css_ptr vaddr); - -/* - * find the buffer object by its virtual address. - * it does not need to be the start address of one bo, - * it can be an address within the range of one bo. - * return NULL if no such buffer object found. - */ -struct hmm_buffer_object *hmm_bo_device_search_in_range( - struct hmm_bo_device *bdev, ia_css_ptr vaddr); - -/* - * find the buffer object with kernel virtual address vaddr. - * return NULL if no such buffer object found. - */ -struct hmm_buffer_object *hmm_bo_device_search_vmap_start( - struct hmm_bo_device *bdev, const void *vaddr); - - -#endif |