| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * 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_H__ |
| #define __HMM_H__ |
| |
| #include <linux/kernel.h> |
| #include <linux/types.h> |
| #include <linux/slab.h> |
| #include <linux/mm.h> |
| |
| #include "hmm_common.h" |
| #include "hmm/hmm_bo.h" |
| #include "ia_css_types.h" |
| |
| #define mmgr_NULL ((ia_css_ptr)0) |
| #define mmgr_EXCEPTION ((ia_css_ptr) - 1) |
| |
| int hmm_init(void); |
| void hmm_cleanup(void); |
| |
| ia_css_ptr hmm_alloc(size_t bytes); |
| ia_css_ptr hmm_create_from_vmalloc_buf(size_t bytes, void *vmalloc_addr); |
| |
| void hmm_free(ia_css_ptr ptr); |
| int hmm_load(ia_css_ptr virt, void *data, unsigned int bytes); |
| int hmm_store(ia_css_ptr virt, const void *data, unsigned int bytes); |
| int hmm_set(ia_css_ptr virt, int c, unsigned int bytes); |
| int hmm_flush(ia_css_ptr virt, unsigned int bytes); |
| |
| /* |
| * get kernel memory physical address from ISP virtual address. |
| */ |
| phys_addr_t hmm_virt_to_phys(ia_css_ptr virt); |
| |
| /* |
| * map ISP memory starts with virt to kernel virtual address |
| * by using vmap. return NULL if failed. |
| * |
| * virt must be the start address of ISP memory (return by hmm_alloc), |
| * do not pass any other address. |
| */ |
| void *hmm_vmap(ia_css_ptr virt, bool cached); |
| void hmm_vunmap(ia_css_ptr virt); |
| |
| /* |
| * flush the cache for the vmapped buffer. |
| * if the buffer has not been vmapped, return directly. |
| */ |
| void hmm_flush_vmap(ia_css_ptr virt); |
| |
| /* |
| * map ISP memory starts with virt to specific vma. |
| * |
| * used for mmap operation. |
| * |
| * virt must be the start address of ISP memory (return by hmm_alloc), |
| * do not pass any other address. |
| */ |
| int hmm_mmap(struct vm_area_struct *vma, ia_css_ptr virt); |
| |
| extern struct hmm_bo_device bo_device; |
| |
| #endif |