sys/dev/drm/drm_memory.c

   1 /*-
   2  *Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
   3  * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the next
  14  * paragraph) shall be included in all copies or substantial portions of the
  15  * Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  21  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  22  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  23  * OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  * Authors:
  26  *    Rickard E. (Rik) Faith <faith@valinux.com>
  27  *    Gareth Hughes <gareth@valinux.com>
  28  *
  29  * $DragonFly: src/sys/dev/drm/drm_memory.c,v 1.1 2008/04/05 18:12:29 hasso Exp $
  30  */
  31
  32 /** @file drm_memory.c
  33  * Wrappers for kernel memory allocation routines, and MTRR management support.
  34  *
  35  * This file previously implemented a memory consumption tracking system using
  36  * the "area" argument for various different types of allocations, but that
  37  * has been stripped out for now.
  38  */
  39
  40 #include "drmP.h"
  41
  42 MALLOC_DEFINE(M_DRM, "drm", "DRM Data Structures");
  43
  44 void drm_mem_init(void)
  45 {
  46 #if defined(__NetBSD__) || defined(__OpenBSD__)
  47         malloc_type_attach(M_DRM);
  48 #endif
  49 }
  50
  51 void drm_mem_uninit(void)
  52 {
  53 }
  54
  55 void *drm_alloc(size_t size, int area)
  56 {
  57         return malloc(size, M_DRM, M_NOWAIT);
  58 }
  59
  60 void *drm_calloc(size_t nmemb, size_t size, int area)
  61 {
  62         return malloc(size * nmemb, M_DRM, M_NOWAIT | M_ZERO);
  63 }
  64
  65 void *drm_realloc(void *oldpt, size_t oldsize, size_t size, int area)
  66 {
  67         void *pt;
  68
  69         pt = malloc(size, M_DRM, M_NOWAIT);
  70         if (pt == NULL)
  71                 return NULL;
  72         if (oldpt && oldsize) {
  73                 memcpy(pt, oldpt, oldsize);
  74                 free(oldpt, M_DRM);
  75         }
  76         return pt;
  77 }
  78
  79 void drm_free(void *pt, size_t size, int area)
  80 {
  81         free(pt, M_DRM);
  82 }
  83
  84 void *drm_ioremap(drm_device_t *dev, drm_local_map_t *map)
  85 {
  86 #if defined(__FreeBSD__) || defined(__DragonFly__)
  87         return pmap_mapdev(map->offset, map->size);
  88 #elif defined(__NetBSD__) || defined(__OpenBSD__)
  89         map->bst = dev->pa.pa_memt;
  90         if (bus_space_map(map->bst, map->offset, map->size,
  91             BUS_SPACE_MAP_LINEAR, &map->bsh))
  92                 return NULL;
  93         return bus_space_vaddr(map->bst, map->bsh);
  94 #endif
  95 }
  96
  97 void drm_ioremapfree(drm_local_map_t *map)
  98 {
  99 #if defined(__FreeBSD__) || defined(__DragonFly__)
 100         pmap_unmapdev((vm_offset_t) map->handle, map->size);
 101 #elif defined(__NetBSD__) || defined(__OpenBSD__)
 102         bus_space_unmap(map->bst, map->bsh, map->size);
 103 #endif
 104 }
 105
 106 #if defined(__FreeBSD__) || defined(__DragonFly__)
 107 int
 108 drm_mtrr_add(unsigned long offset, size_t size, int flags)
 109 {
 110         int act;
 111         struct mem_range_desc mrdesc;
 112
 113         mrdesc.mr_base = offset;
 114         mrdesc.mr_len = size;
 115         mrdesc.mr_flags = flags;
 116         act = MEMRANGE_SET_UPDATE;
 117         strlcpy(mrdesc.mr_owner, "drm", sizeof(mrdesc.mr_owner));
 118         return mem_range_attr_set(&mrdesc, &act);
 119 }
 120
 121 int
 122 drm_mtrr_del(int __unused handle, unsigned long offset, size_t size, int flags)
 123 {
 124         int act;
 125         struct mem_range_desc mrdesc;
 126
 127         mrdesc.mr_base = offset;
 128         mrdesc.mr_len = size;
 129         mrdesc.mr_flags = flags;
 130         act = MEMRANGE_SET_REMOVE;
 131         strlcpy(mrdesc.mr_owner, "drm", sizeof(mrdesc.mr_owner));
 132         return mem_range_attr_set(&mrdesc, &act);
 133 }
 134 #elif defined(__NetBSD__) || defined(__OpenBSD__)
 135 int
 136 drm_mtrr_add(unsigned long offset, size_t size, int flags)
 137 {
 138         struct mtrr mtrrmap;
 139         int one = 1;
 140
 141         mtrrmap.base = offset;
 142         mtrrmap.len = size;
 143         mtrrmap.type = flags;
 144         mtrrmap.flags = MTRR_VALID;
 145         return mtrr_set(&mtrrmap, &one, NULL, MTRR_GETSET_KERNEL);
 146 }
 147
 148 int
 149 drm_mtrr_del(unsigned long offset, size_t size, int flags)
 150 {
 151         struct mtrr mtrrmap;
 152         int one = 1;
 153
 154         mtrrmap.base = offset;
 155         mtrrmap.len = size;
 156         mtrrmap.type = flags;
 157         mtrrmap.flags = 0;
 158         return mtrr_set(&mtrrmap, &one, NULL, MTRR_GETSET_KERNEL);
 159 }
 160 #endif