LXR linux/drivers/staging/media/atomisp/pci/atomisp2/include/hmm/hmm.h

   1/*
   2 * Support for Medifield PNW Camera Imaging ISP subsystem.
   3 *
   4 * Copyright (c) 2010 Intel Corporation. All Rights Reserved.
   5 *
   6 * Copyright (c) 2010 Silicon Hive www.siliconhive.com.
   7 *
   8 * This program is free software; you can redistribute it and/or
   9 * modify it under the terms of the GNU General Public License version
  10 * 2 as published by the Free Software Foundation.
  11 *
  12 * This program is distributed in the hope that it will be useful,
  13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 * GNU General Public License for more details.
  16 *
  17 * You should have received a copy of the GNU General Public License
  18 * along with this program; if not, write to the Free Software
  19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  20 * 02110-1301, USA.
  21 *
  22 */
  23
  24#ifndef __HMM_H__
  25#define __HMM_H__
  26
  27#include <linux/kernel.h>
  28#include <linux/types.h>
  29#include <linux/slab.h>
  30#include <linux/mm.h>
  31
  32#include "hmm/hmm_pool.h"
  33#include "ia_css_types.h"
  34
  35#define HMM_CACHED true
  36#define HMM_UNCACHED false
  37
  38int hmm_pool_register(unsigned int pool_size, enum hmm_pool_type pool_type);
  39void hmm_pool_unregister(enum hmm_pool_type pool_type);
  40
  41int hmm_init(void);
  42void hmm_cleanup(void);
  43
  44ia_css_ptr hmm_alloc(size_t bytes, enum hmm_bo_type type,
  45                int from_highmem, void *userptr, bool cached);
  46void hmm_free(ia_css_ptr ptr);
  47int hmm_load(ia_css_ptr virt, void *data, unsigned int bytes);
  48int hmm_store(ia_css_ptr virt, const void *data, unsigned int bytes);
  49int hmm_set(ia_css_ptr virt, int c, unsigned int bytes);
  50int hmm_flush(ia_css_ptr virt, unsigned int bytes);
  51
  52/*
  53 * get kernel memory physical address from ISP virtual address.
  54 */
  55phys_addr_t hmm_virt_to_phys(ia_css_ptr virt);
  56
  57/*
  58 * map ISP memory starts with virt to kernel virtual address
  59 * by using vmap. return NULL if failed.
  60 *
  61 * virt must be the start address of ISP memory (return by hmm_alloc),
  62 * do not pass any other address.
  63 */
  64void *hmm_vmap(ia_css_ptr virt, bool cached);
  65void hmm_vunmap(ia_css_ptr virt);
  66
  67/*
  68 * flush the cache for the vmapped buffer.
  69 * if the buffer has not been vmapped, return directly.
  70 */
  71void hmm_flush_vmap(ia_css_ptr virt);
  72
  73/*
  74 * Address translation from ISP shared memory address to kernel virtual address
  75 * if the memory is not vmmaped,  then do it.
  76 */
  77void *hmm_isp_vaddr_to_host_vaddr(ia_css_ptr ptr, bool cached);
  78
  79/*
  80 * Address translation from kernel virtual address to ISP shared memory address
  81 */
  82ia_css_ptr hmm_host_vaddr_to_hrt_vaddr(const void *ptr);
  83
  84/*
  85 * map ISP memory starts with virt to specific vma.
  86 *
  87 * used for mmap operation.
  88 *
  89 * virt must be the start address of ISP memory (return by hmm_alloc),
  90 * do not pass any other address.
  91 */
  92int hmm_mmap(struct vm_area_struct *vma, ia_css_ptr virt);
  93
  94/* show memory statistic
  95 */
  96void hmm_show_mem_stat(const char *func, const int line);
  97
  98/* init memory statistic
  99 */
 100void hmm_init_mem_stat(int res_pgnr, int dyc_en, int dyc_pgnr);
 101
 102extern bool dypool_enable;
 103extern unsigned int dypool_pgnr;
 104extern struct hmm_bo_device bo_device;
 105
 106#endif
 107