LXR linux/drivers/staging/media/atomisp/pci/atomisp2/css2400/ia_css_memory

   1/*
   2 * Support for Intel Camera Imaging ISP subsystem.
   3 * Copyright (c) 2015-2017, Intel Corporation.
   4 *
   5 * This program is free software; you can redistribute it and/or modify it
   6 * under the terms and conditions of the GNU General Public License,
   7 * version 2, as published by the Free Software Foundation.
   8 *
   9 * This program is distributed in the hope it will be useful, but WITHOUT
  10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12 * more details.
  13 */
  14
  15#include <type_support.h>
  16#include <system_types.h>
  17#include <assert_support.h>
  18#include <memory_access.h>
  19#include <ia_css_env.h>
  20#include <hrt/hive_isp_css_mm_hrt.h>
  21
  22const hrt_vaddress mmgr_NULL = (hrt_vaddress)0;
  23const hrt_vaddress mmgr_EXCEPTION = (hrt_vaddress)-1;
  24
  25hrt_vaddress
  26mmgr_malloc(const size_t size)
  27{
  28        return mmgr_alloc_attr(size, 0);
  29}
  30
  31hrt_vaddress mmgr_alloc_attr(const size_t size, const uint16_t attrs)
  32{
  33        uint16_t masked_attrs = attrs & MMGR_ATTRIBUTE_MASK;
  34        WARN_ON(attrs & MMGR_ATTRIBUTE_CONTIGUOUS);
  35
  36        if (masked_attrs & MMGR_ATTRIBUTE_CLEARED) {
  37                if (masked_attrs & MMGR_ATTRIBUTE_CACHED)
  38                        return (ia_css_ptr) hrt_isp_css_mm_calloc_cached(size);
  39                else
  40                        return (ia_css_ptr) hrt_isp_css_mm_calloc(size);
  41        } else {
  42                if (masked_attrs & MMGR_ATTRIBUTE_CACHED)
  43                        return (ia_css_ptr) hrt_isp_css_mm_alloc_cached(size);
  44                else
  45                        return (ia_css_ptr) hrt_isp_css_mm_alloc(size);
  46        }
  47}
  48
  49hrt_vaddress
  50mmgr_calloc(const size_t N, const size_t size)
  51{
  52        return mmgr_alloc_attr(size * N, MMGR_ATTRIBUTE_CLEARED);
  53}
  54
  55void mmgr_clear(hrt_vaddress vaddr, const size_t size)
  56{
  57        if (vaddr)
  58                hmm_set(vaddr, 0, size);
  59}
  60
  61void mmgr_load(const hrt_vaddress vaddr, void *data, const size_t size)
  62{
  63        if (vaddr && data)
  64                hmm_load(vaddr, data, size);
  65}
  66
  67void
  68mmgr_store(const hrt_vaddress vaddr, const void *data, const size_t size)
  69{
  70        if (vaddr && data)
  71                hmm_store(vaddr, data, size);
  72}
  73
  74hrt_vaddress
  75mmgr_mmap(const void *ptr, const size_t size,
  76          uint16_t attribute, void *context)
  77{
  78        struct hrt_userbuffer_attr *userbuffer_attr = context;
  79        return hrt_isp_css_mm_alloc_user_ptr(
  80                        size, (void *)ptr, userbuffer_attr->pgnr,
  81                        userbuffer_attr->type,
  82                        attribute & HRT_BUF_FLAG_CACHED);
  83}
  84