1 /** 2 * \file drm_memory.c 3 * Memory management wrappers for DRM 4 * 5 * \author Rickard E. (Rik) Faith <faith@valinux.com> 6 * \author Gareth Hughes <gareth@valinux.com> 7 */ 8 9 /* 10 * Created: Thu Feb 4 14:00:34 1999 by faith@valinux.com 11 * 12 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. 13 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. 14 * All Rights Reserved. 15 * 16 * Permission is hereby granted, free of charge, to any person obtaining a 17 * copy of this software and associated documentation files (the "Software"), 18 * to deal in the Software without restriction, including without limitation 19 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 20 * and/or sell copies of the Software, and to permit persons to whom the 21 * Software is furnished to do so, subject to the following conditions: 22 * 23 * The above copyright notice and this permission notice (including the next 24 * paragraph) shall be included in all copies or substantial portions of the 25 * Software. 26 * 27 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 28 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 29 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 30 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 31 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 32 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 33 * OTHER DEALINGS IN THE SOFTWARE. 34 */ 35 36 #include <linux/highmem.h> 37 #include <linux/export.h> 38 #include <drm/drmP.h> 39 #include "drm_legacy.h" 40 41 #if __OS_HAS_AGP 42 43 #ifdef HAVE_PAGE_AGP 44 # include <asm/agp.h> 45 #else 46 # ifdef __powerpc__ 47 # define PAGE_AGP __pgprot(_PAGE_KERNEL | _PAGE_NO_CACHE) 48 # else 49 # define PAGE_AGP PAGE_KERNEL 50 # endif 51 #endif 52 53 54 #else /* __OS_HAS_AGP */ 55 #endif /* agp */ 56 57 void drm_legacy_ioremap(struct drm_local_map *map, struct drm_device *dev) 58 { 59 map->handle = ioremap(map->offset, map->size); 60 } 61 EXPORT_SYMBOL(drm_legacy_ioremap); 62 63 void drm_legacy_ioremap_wc(struct drm_local_map *map, struct drm_device *dev) 64 { 65 map->handle = ioremap_wc(map->offset, map->size); 66 } 67 EXPORT_SYMBOL(drm_legacy_ioremap_wc); 68 69 void drm_legacy_ioremapfree(struct drm_local_map *map, struct drm_device *dev) 70 { 71 if (!map->handle || !map->size) 72 return; 73 74 pmap_unmapdev((vm_offset_t) map->handle, map->size); 75 } 76 EXPORT_SYMBOL(drm_legacy_ioremapfree); 77 78 int 79 drm_mtrr_add(unsigned long offset, size_t size, int flags) 80 { 81 int act; 82 struct mem_range_desc mrdesc; 83 84 mrdesc.mr_base = offset; 85 mrdesc.mr_len = size; 86 mrdesc.mr_flags = flags; 87 act = MEMRANGE_SET_UPDATE; 88 strlcpy(mrdesc.mr_owner, "drm", sizeof(mrdesc.mr_owner)); 89 return mem_range_attr_set(&mrdesc, &act); 90 } 91 92 int 93 drm_mtrr_del(int __unused handle, unsigned long offset, size_t size, int flags) 94 { 95 int act; 96 struct mem_range_desc mrdesc; 97 98 mrdesc.mr_base = offset; 99 mrdesc.mr_len = size; 100 mrdesc.mr_flags = flags; 101 act = MEMRANGE_SET_REMOVE; 102 strlcpy(mrdesc.mr_owner, "drm", sizeof(mrdesc.mr_owner)); 103 return mem_range_attr_set(&mrdesc, &act); 104 } 105