Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /** |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 2 | * \file drm_bufs.c |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * Generic buffer template |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 4 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | * \author Rickard E. (Rik) Faith <faith@valinux.com> |
| 6 | * \author Gareth Hughes <gareth@valinux.com> |
| 7 | */ |
| 8 | |
| 9 | /* |
| 10 | * Created: Thu Nov 23 03:10:50 2000 by gareth@valinux.com |
| 11 | * |
| 12 | * Copyright 1999, 2000 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/vmalloc.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 37 | #include <linux/slab.h> |
David Miller | f1a2a9b | 2009-02-18 15:41:02 -0800 | [diff] [blame] | 38 | #include <linux/log2.h> |
Paul Gortmaker | 2d1a8a4 | 2011-08-30 18:16:33 -0400 | [diff] [blame] | 39 | #include <linux/export.h> |
David Miller | f1a2a9b | 2009-02-18 15:41:02 -0800 | [diff] [blame] | 40 | #include <asm/shmparam.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | #include "drmP.h" |
| 42 | |
Dave Airlie | 5591051 | 2007-07-11 16:53:40 +1000 | [diff] [blame] | 43 | static struct drm_map_list *drm_find_matching_map(struct drm_device *dev, |
Benjamin Herrenschmidt | f77d390 | 2009-02-02 16:55:46 +1100 | [diff] [blame] | 44 | struct drm_local_map *map) |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 45 | { |
Dave Airlie | 5591051 | 2007-07-11 16:53:40 +1000 | [diff] [blame] | 46 | struct drm_map_list *entry; |
Dave Airlie | bd1b331 | 2007-05-26 05:01:51 +1000 | [diff] [blame] | 47 | list_for_each_entry(entry, &dev->maplist, head) { |
Benjamin Herrenschmidt | 41c2e75 | 2009-02-02 16:55:47 +1100 | [diff] [blame] | 48 | /* |
| 49 | * Because the kernel-userspace ABI is fixed at a 32-bit offset |
Tormod Volden | 66aa696 | 2011-05-30 19:45:43 +0000 | [diff] [blame] | 50 | * while PCI resources may live above that, we only compare the |
| 51 | * lower 32 bits of the map offset for maps of type |
| 52 | * _DRM_FRAMEBUFFER or _DRM_REGISTERS. |
| 53 | * It is assumed that if a driver have more than one resource |
| 54 | * of each type, the lower 32 bits are different. |
Benjamin Herrenschmidt | 41c2e75 | 2009-02-02 16:55:47 +1100 | [diff] [blame] | 55 | */ |
| 56 | if (!entry->map || |
| 57 | map->type != entry->map->type || |
| 58 | entry->master != dev->primary->master) |
| 59 | continue; |
| 60 | switch (map->type) { |
| 61 | case _DRM_SHM: |
| 62 | if (map->flags != _DRM_CONTAINS_LOCK) |
| 63 | break; |
Tormod Volden | 66aa696 | 2011-05-30 19:45:43 +0000 | [diff] [blame] | 64 | return entry; |
Benjamin Herrenschmidt | 41c2e75 | 2009-02-02 16:55:47 +1100 | [diff] [blame] | 65 | case _DRM_REGISTERS: |
| 66 | case _DRM_FRAME_BUFFER: |
Tormod Volden | 66aa696 | 2011-05-30 19:45:43 +0000 | [diff] [blame] | 67 | if ((entry->map->offset & 0xffffffff) == |
| 68 | (map->offset & 0xffffffff)) |
| 69 | return entry; |
Benjamin Herrenschmidt | 41c2e75 | 2009-02-02 16:55:47 +1100 | [diff] [blame] | 70 | default: /* Make gcc happy */ |
| 71 | ; |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 72 | } |
Benjamin Herrenschmidt | 41c2e75 | 2009-02-02 16:55:47 +1100 | [diff] [blame] | 73 | if (entry->map->offset == map->offset) |
| 74 | return entry; |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 75 | } |
| 76 | |
| 77 | return NULL; |
| 78 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | |
Dave Airlie | e0be428 | 2007-07-12 10:26:44 +1000 | [diff] [blame] | 80 | static int drm_map_handle(struct drm_device *dev, struct drm_hash_item *hash, |
David Miller | f1a2a9b | 2009-02-18 15:41:02 -0800 | [diff] [blame] | 81 | unsigned long user_token, int hashed_handle, int shm) |
Dave Airlie | d1f2b55 | 2005-08-05 22:11:22 +1000 | [diff] [blame] | 82 | { |
David Miller | f1a2a9b | 2009-02-18 15:41:02 -0800 | [diff] [blame] | 83 | int use_hashed_handle, shift; |
| 84 | unsigned long add; |
| 85 | |
Dave Airlie | c2604ce | 2006-08-12 16:03:26 +1000 | [diff] [blame] | 86 | #if (BITS_PER_LONG == 64) |
Thomas Hellstrom | 8d153f7 | 2006-08-07 22:36:47 +1000 | [diff] [blame] | 87 | use_hashed_handle = ((user_token & 0xFFFFFFFF00000000UL) || hashed_handle); |
| 88 | #elif (BITS_PER_LONG == 32) |
| 89 | use_hashed_handle = hashed_handle; |
| 90 | #else |
| 91 | #error Unsupported long size. Neither 64 nor 32 bits. |
| 92 | #endif |
Dave Airlie | d1f2b55 | 2005-08-05 22:11:22 +1000 | [diff] [blame] | 93 | |
Thomas Hellstrom | e08870c | 2006-09-22 04:18:37 +1000 | [diff] [blame] | 94 | if (!use_hashed_handle) { |
| 95 | int ret; |
Thomas Hellstrom | 1545085 | 2007-02-08 16:14:05 +1100 | [diff] [blame] | 96 | hash->key = user_token >> PAGE_SHIFT; |
Thomas Hellstrom | e08870c | 2006-09-22 04:18:37 +1000 | [diff] [blame] | 97 | ret = drm_ht_insert_item(&dev->map_hash, hash); |
| 98 | if (ret != -EINVAL) |
| 99 | return ret; |
Dave Airlie | d1f2b55 | 2005-08-05 22:11:22 +1000 | [diff] [blame] | 100 | } |
David Miller | f1a2a9b | 2009-02-18 15:41:02 -0800 | [diff] [blame] | 101 | |
| 102 | shift = 0; |
| 103 | add = DRM_MAP_HASH_OFFSET >> PAGE_SHIFT; |
| 104 | if (shm && (SHMLBA > PAGE_SIZE)) { |
| 105 | int bits = ilog2(SHMLBA >> PAGE_SHIFT) + 1; |
| 106 | |
| 107 | /* For shared memory, we have to preserve the SHMLBA |
| 108 | * bits of the eventual vma->vm_pgoff value during |
| 109 | * mmap(). Otherwise we run into cache aliasing problems |
| 110 | * on some platforms. On these platforms, the pgoff of |
| 111 | * a mmap() request is used to pick a suitable virtual |
| 112 | * address for the mmap() region such that it will not |
| 113 | * cause cache aliasing problems. |
| 114 | * |
| 115 | * Therefore, make sure the SHMLBA relevant bits of the |
| 116 | * hash value we use are equal to those in the original |
| 117 | * kernel virtual address. |
| 118 | */ |
| 119 | shift = bits; |
| 120 | add |= ((user_token >> PAGE_SHIFT) & ((1UL << bits) - 1UL)); |
| 121 | } |
| 122 | |
Thomas Hellstrom | e08870c | 2006-09-22 04:18:37 +1000 | [diff] [blame] | 123 | return drm_ht_just_insert_please(&dev->map_hash, hash, |
| 124 | user_token, 32 - PAGE_SHIFT - 3, |
David Miller | f1a2a9b | 2009-02-18 15:41:02 -0800 | [diff] [blame] | 125 | shift, add); |
Dave Airlie | d1f2b55 | 2005-08-05 22:11:22 +1000 | [diff] [blame] | 126 | } |
Dave Airlie | 9a18664 | 2005-06-23 21:29:18 +1000 | [diff] [blame] | 127 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | /** |
Benjamin Herrenschmidt | f77d390 | 2009-02-02 16:55:46 +1100 | [diff] [blame] | 129 | * Core function to create a range of memory available for mapping by a |
| 130 | * non-root process. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | * |
| 132 | * Adjusts the memory offset to its absolute value according to the mapping |
| 133 | * type. Adds the map to the map list drm_device::maplist. Adds MTRR's where |
| 134 | * applicable and if supported by the kernel. |
| 135 | */ |
Benjamin Herrenschmidt | 41c2e75 | 2009-02-02 16:55:47 +1100 | [diff] [blame] | 136 | static int drm_addmap_core(struct drm_device * dev, resource_size_t offset, |
Dave Airlie | c60ce62 | 2007-07-11 15:27:12 +1000 | [diff] [blame] | 137 | unsigned int size, enum drm_map_type type, |
Dave Airlie | 5591051 | 2007-07-11 16:53:40 +1000 | [diff] [blame] | 138 | enum drm_map_flags flags, |
| 139 | struct drm_map_list ** maplist) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | { |
Benjamin Herrenschmidt | f77d390 | 2009-02-02 16:55:46 +1100 | [diff] [blame] | 141 | struct drm_local_map *map; |
Dave Airlie | 5591051 | 2007-07-11 16:53:40 +1000 | [diff] [blame] | 142 | struct drm_map_list *list; |
Dave Airlie | 9c8da5e | 2005-07-10 15:38:56 +1000 | [diff] [blame] | 143 | drm_dma_handle_t *dmah; |
Thomas Hellstrom | 8d153f7 | 2006-08-07 22:36:47 +1000 | [diff] [blame] | 144 | unsigned long user_token; |
| 145 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 146 | |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 147 | map = kmalloc(sizeof(*map), GFP_KERNEL); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 148 | if (!map) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | return -ENOMEM; |
| 150 | |
Dave Airlie | 7ab9840 | 2005-07-10 16:56:52 +1000 | [diff] [blame] | 151 | map->offset = offset; |
| 152 | map->size = size; |
| 153 | map->flags = flags; |
| 154 | map->type = type; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | |
| 156 | /* Only allow shared memory to be removable since we only keep enough |
| 157 | * book keeping information about shared memory to allow for removal |
| 158 | * when processes fork. |
| 159 | */ |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 160 | if ((map->flags & _DRM_REMOVABLE) && map->type != _DRM_SHM) { |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 161 | kfree(map); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | return -EINVAL; |
| 163 | } |
Benjamin Herrenschmidt | 41c2e75 | 2009-02-02 16:55:47 +1100 | [diff] [blame] | 164 | DRM_DEBUG("offset = 0x%08llx, size = 0x%08lx, type = %d\n", |
| 165 | (unsigned long long)map->offset, map->size, map->type); |
Benjamin Herrenschmidt | b674137 | 2009-05-18 11:56:16 +1000 | [diff] [blame] | 166 | |
| 167 | /* page-align _DRM_SHM maps. They are allocated here so there is no security |
| 168 | * hole created by that and it works around various broken drivers that use |
| 169 | * a non-aligned quantity to map the SAREA. --BenH |
| 170 | */ |
| 171 | if (map->type == _DRM_SHM) |
| 172 | map->size = PAGE_ALIGN(map->size); |
| 173 | |
Benjamin Herrenschmidt | 41c2e75 | 2009-02-02 16:55:47 +1100 | [diff] [blame] | 174 | if ((map->offset & (~(resource_size_t)PAGE_MASK)) || (map->size & (~PAGE_MASK))) { |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 175 | kfree(map); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | return -EINVAL; |
| 177 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 178 | map->mtrr = -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | map->handle = NULL; |
| 180 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 181 | switch (map->type) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | case _DRM_REGISTERS: |
| 183 | case _DRM_FRAME_BUFFER: |
Jordan Crouse | 4b7fb9b | 2010-05-27 13:40:26 -0600 | [diff] [blame] | 184 | #if !defined(__sparc__) && !defined(__alpha__) && !defined(__ia64__) && !defined(__powerpc64__) && !defined(__x86_64__) && !defined(__arm__) |
Dave Airlie | 8d2ea62 | 2006-01-11 20:48:09 +1100 | [diff] [blame] | 185 | if (map->offset + (map->size-1) < map->offset || |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 186 | map->offset < virt_to_phys(high_memory)) { |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 187 | kfree(map); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | return -EINVAL; |
| 189 | } |
| 190 | #endif |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 191 | /* Some drivers preinitialize some maps, without the X Server |
| 192 | * needing to be aware of it. Therefore, we just return success |
| 193 | * when the server tries to create a duplicate map. |
| 194 | */ |
Dave Airlie | 89625eb | 2005-09-05 21:23:23 +1000 | [diff] [blame] | 195 | list = drm_find_matching_map(dev, map); |
| 196 | if (list != NULL) { |
| 197 | if (list->map->size != map->size) { |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 198 | DRM_DEBUG("Matching maps of type %d with " |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 199 | "mismatched sizes, (%ld vs %ld)\n", |
| 200 | map->type, map->size, |
| 201 | list->map->size); |
Dave Airlie | 89625eb | 2005-09-05 21:23:23 +1000 | [diff] [blame] | 202 | list->map->size = map->size; |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 203 | } |
| 204 | |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 205 | kfree(map); |
Dave Airlie | 89625eb | 2005-09-05 21:23:23 +1000 | [diff] [blame] | 206 | *maplist = list; |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 207 | return 0; |
| 208 | } |
| 209 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | if (drm_core_has_MTRR(dev)) { |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 211 | if (map->type == _DRM_FRAME_BUFFER || |
| 212 | (map->flags & _DRM_WRITE_COMBINING)) { |
| 213 | map->mtrr = mtrr_add(map->offset, map->size, |
| 214 | MTRR_TYPE_WRCOMB, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | } |
| 216 | } |
Scott Thompson | 0769d39 | 2007-08-25 18:17:49 +1000 | [diff] [blame] | 217 | if (map->type == _DRM_REGISTERS) { |
Christoph Hellwig | 004a772 | 2007-01-08 21:56:59 +1100 | [diff] [blame] | 218 | map->handle = ioremap(map->offset, map->size); |
Scott Thompson | 0769d39 | 2007-08-25 18:17:49 +1000 | [diff] [blame] | 219 | if (!map->handle) { |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 220 | kfree(map); |
Scott Thompson | 0769d39 | 2007-08-25 18:17:49 +1000 | [diff] [blame] | 221 | return -ENOMEM; |
| 222 | } |
| 223 | } |
Dave Airlie | bc5f452 | 2007-11-05 12:50:58 +1000 | [diff] [blame] | 224 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | case _DRM_SHM: |
Dave Airlie | 54ba2f7 | 2007-02-10 12:07:47 +1100 | [diff] [blame] | 227 | list = drm_find_matching_map(dev, map); |
| 228 | if (list != NULL) { |
| 229 | if(list->map->size != map->size) { |
| 230 | DRM_DEBUG("Matching maps of type %d with " |
| 231 | "mismatched sizes, (%ld vs %ld)\n", |
| 232 | map->type, map->size, list->map->size); |
| 233 | list->map->size = map->size; |
| 234 | } |
| 235 | |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 236 | kfree(map); |
Dave Airlie | 54ba2f7 | 2007-02-10 12:07:47 +1100 | [diff] [blame] | 237 | *maplist = list; |
| 238 | return 0; |
| 239 | } |
Thomas Hellstrom | f239b7b | 2007-01-08 21:22:50 +1100 | [diff] [blame] | 240 | map->handle = vmalloc_user(map->size); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 241 | DRM_DEBUG("%lu %d %p\n", |
| 242 | map->size, drm_order(map->size), map->handle); |
| 243 | if (!map->handle) { |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 244 | kfree(map); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | return -ENOMEM; |
| 246 | } |
| 247 | map->offset = (unsigned long)map->handle; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 248 | if (map->flags & _DRM_CONTAINS_LOCK) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | /* Prevent a 2nd X Server from creating a 2nd lock */ |
Dave Airlie | 7c1c287 | 2008-11-28 14:22:24 +1000 | [diff] [blame] | 250 | if (dev->primary->master->lock.hw_lock != NULL) { |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 251 | vfree(map->handle); |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 252 | kfree(map); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | return -EBUSY; |
| 254 | } |
Dave Airlie | 7c1c287 | 2008-11-28 14:22:24 +1000 | [diff] [blame] | 255 | dev->sigdata.lock = dev->primary->master->lock.hw_lock = map->handle; /* Pointer to lock */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | } |
| 257 | break; |
Dave Airlie | 54ba2f7 | 2007-02-10 12:07:47 +1100 | [diff] [blame] | 258 | case _DRM_AGP: { |
Dave Airlie | 5591051 | 2007-07-11 16:53:40 +1000 | [diff] [blame] | 259 | struct drm_agp_mem *entry; |
Dave Airlie | 54ba2f7 | 2007-02-10 12:07:47 +1100 | [diff] [blame] | 260 | int valid = 0; |
| 261 | |
| 262 | if (!drm_core_has_AGP(dev)) { |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 263 | kfree(map); |
Dave Airlie | 54ba2f7 | 2007-02-10 12:07:47 +1100 | [diff] [blame] | 264 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | } |
Dave Airlie | 54ba2f7 | 2007-02-10 12:07:47 +1100 | [diff] [blame] | 266 | #ifdef __alpha__ |
| 267 | map->offset += dev->hose->mem_space->start; |
| 268 | #endif |
Eric Anholt | 47a184a | 2007-11-22 16:55:15 +1000 | [diff] [blame] | 269 | /* In some cases (i810 driver), user space may have already |
| 270 | * added the AGP base itself, because dev->agp->base previously |
| 271 | * only got set during AGP enable. So, only add the base |
| 272 | * address if the map's offset isn't already within the |
| 273 | * aperture. |
Dave Airlie | 54ba2f7 | 2007-02-10 12:07:47 +1100 | [diff] [blame] | 274 | */ |
Eric Anholt | 47a184a | 2007-11-22 16:55:15 +1000 | [diff] [blame] | 275 | if (map->offset < dev->agp->base || |
| 276 | map->offset > dev->agp->base + |
| 277 | dev->agp->agp_info.aper_size * 1024 * 1024 - 1) { |
| 278 | map->offset += dev->agp->base; |
| 279 | } |
Dave Airlie | 54ba2f7 | 2007-02-10 12:07:47 +1100 | [diff] [blame] | 280 | map->mtrr = dev->agp->agp_mtrr; /* for getmap */ |
| 281 | |
| 282 | /* This assumes the DRM is in total control of AGP space. |
| 283 | * It's not always the case as AGP can be in the control |
| 284 | * of user space (i.e. i810 driver). So this loop will get |
| 285 | * skipped and we double check that dev->agp->memory is |
| 286 | * actually set as well as being invalid before EPERM'ing |
| 287 | */ |
Dave Airlie | bd1b331 | 2007-05-26 05:01:51 +1000 | [diff] [blame] | 288 | list_for_each_entry(entry, &dev->agp->memory, head) { |
Dave Airlie | 54ba2f7 | 2007-02-10 12:07:47 +1100 | [diff] [blame] | 289 | if ((map->offset >= entry->bound) && |
| 290 | (map->offset + map->size <= entry->bound + entry->pages * PAGE_SIZE)) { |
| 291 | valid = 1; |
| 292 | break; |
| 293 | } |
| 294 | } |
Dave Airlie | bd1b331 | 2007-05-26 05:01:51 +1000 | [diff] [blame] | 295 | if (!list_empty(&dev->agp->memory) && !valid) { |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 296 | kfree(map); |
Dave Airlie | 54ba2f7 | 2007-02-10 12:07:47 +1100 | [diff] [blame] | 297 | return -EPERM; |
| 298 | } |
Benjamin Herrenschmidt | 41c2e75 | 2009-02-02 16:55:47 +1100 | [diff] [blame] | 299 | DRM_DEBUG("AGP offset = 0x%08llx, size = 0x%08lx\n", |
| 300 | (unsigned long long)map->offset, map->size); |
Dave Airlie | 54ba2f7 | 2007-02-10 12:07:47 +1100 | [diff] [blame] | 301 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | break; |
Dave Airlie | 54ba2f7 | 2007-02-10 12:07:47 +1100 | [diff] [blame] | 303 | } |
Pekka Paalanen | 812c369 | 2009-09-17 22:59:54 +0300 | [diff] [blame] | 304 | case _DRM_GEM: |
| 305 | DRM_ERROR("tried to addmap GEM object\n"); |
| 306 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | case _DRM_SCATTER_GATHER: |
| 308 | if (!dev->sg) { |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 309 | kfree(map); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | return -EINVAL; |
| 311 | } |
Dave Airlie | d1f2b55 | 2005-08-05 22:11:22 +1000 | [diff] [blame] | 312 | map->offset += (unsigned long)dev->sg->virtual; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | break; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 314 | case _DRM_CONSISTENT: |
Dave Airlie | 2d0f9ea | 2005-07-10 14:34:13 +1000 | [diff] [blame] | 315 | /* dma_addr_t is 64bit on i386 with CONFIG_HIGHMEM64G, |
Dave Airlie | 9c8da5e | 2005-07-10 15:38:56 +1000 | [diff] [blame] | 316 | * As we're limiting the address to 2^32-1 (or less), |
Dave Airlie | 2d0f9ea | 2005-07-10 14:34:13 +1000 | [diff] [blame] | 317 | * casting it down to 32 bits is no problem, but we |
| 318 | * need to point to a 64bit variable first. */ |
Zhenyu Wang | e6be8d9 | 2010-01-05 11:25:05 +0800 | [diff] [blame] | 319 | dmah = drm_pci_alloc(dev, map->size, map->size); |
Dave Airlie | 9c8da5e | 2005-07-10 15:38:56 +1000 | [diff] [blame] | 320 | if (!dmah) { |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 321 | kfree(map); |
Dave Airlie | 2d0f9ea | 2005-07-10 14:34:13 +1000 | [diff] [blame] | 322 | return -ENOMEM; |
| 323 | } |
Dave Airlie | 9c8da5e | 2005-07-10 15:38:56 +1000 | [diff] [blame] | 324 | map->handle = dmah->vaddr; |
| 325 | map->offset = (unsigned long)dmah->busaddr; |
| 326 | kfree(dmah); |
Dave Airlie | 2d0f9ea | 2005-07-10 14:34:13 +1000 | [diff] [blame] | 327 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | default: |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 329 | kfree(map); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | return -EINVAL; |
| 331 | } |
| 332 | |
Davidlohr Bueso | 94e3370 | 2010-08-11 09:18:52 -0400 | [diff] [blame] | 333 | list = kzalloc(sizeof(*list), GFP_KERNEL); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 334 | if (!list) { |
Amol Lad | 85abb3f | 2006-10-25 09:55:34 -0700 | [diff] [blame] | 335 | if (map->type == _DRM_REGISTERS) |
Christoph Hellwig | 004a772 | 2007-01-08 21:56:59 +1100 | [diff] [blame] | 336 | iounmap(map->handle); |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 337 | kfree(map); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | return -EINVAL; |
| 339 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | list->map = map; |
| 341 | |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 342 | mutex_lock(&dev->struct_mutex); |
Dave Airlie | bd1b331 | 2007-05-26 05:01:51 +1000 | [diff] [blame] | 343 | list_add(&list->head, &dev->maplist); |
Thomas Hellstrom | 8d153f7 | 2006-08-07 22:36:47 +1000 | [diff] [blame] | 344 | |
Dave Airlie | d1f2b55 | 2005-08-05 22:11:22 +1000 | [diff] [blame] | 345 | /* Assign a 32-bit handle */ |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 346 | /* We do it here so that dev->struct_mutex protects the increment */ |
Thomas Hellstrom | 8d153f7 | 2006-08-07 22:36:47 +1000 | [diff] [blame] | 347 | user_token = (map->type == _DRM_SHM) ? (unsigned long)map->handle : |
| 348 | map->offset; |
David Miller | f1a2a9b | 2009-02-18 15:41:02 -0800 | [diff] [blame] | 349 | ret = drm_map_handle(dev, &list->hash, user_token, 0, |
| 350 | (map->type == _DRM_SHM)); |
Thomas Hellstrom | 8d153f7 | 2006-08-07 22:36:47 +1000 | [diff] [blame] | 351 | if (ret) { |
Amol Lad | 85abb3f | 2006-10-25 09:55:34 -0700 | [diff] [blame] | 352 | if (map->type == _DRM_REGISTERS) |
Christoph Hellwig | 004a772 | 2007-01-08 21:56:59 +1100 | [diff] [blame] | 353 | iounmap(map->handle); |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 354 | kfree(map); |
| 355 | kfree(list); |
Thomas Hellstrom | 8d153f7 | 2006-08-07 22:36:47 +1000 | [diff] [blame] | 356 | mutex_unlock(&dev->struct_mutex); |
| 357 | return ret; |
| 358 | } |
| 359 | |
Thomas Hellstrom | 1545085 | 2007-02-08 16:14:05 +1100 | [diff] [blame] | 360 | list->user_token = list->hash.key << PAGE_SHIFT; |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 361 | mutex_unlock(&dev->struct_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | |
Ben Skeggs | 2ff2e8a | 2009-05-26 10:35:52 +1000 | [diff] [blame] | 363 | if (!(map->flags & _DRM_DRIVER)) |
| 364 | list->master = dev->primary->master; |
Dave Airlie | 89625eb | 2005-09-05 21:23:23 +1000 | [diff] [blame] | 365 | *maplist = list; |
Dave Airlie | 7ab9840 | 2005-07-10 16:56:52 +1000 | [diff] [blame] | 366 | return 0; |
Dave Airlie | 54ba2f7 | 2007-02-10 12:07:47 +1100 | [diff] [blame] | 367 | } |
Dave Airlie | 89625eb | 2005-09-05 21:23:23 +1000 | [diff] [blame] | 368 | |
Benjamin Herrenschmidt | 41c2e75 | 2009-02-02 16:55:47 +1100 | [diff] [blame] | 369 | int drm_addmap(struct drm_device * dev, resource_size_t offset, |
Dave Airlie | c60ce62 | 2007-07-11 15:27:12 +1000 | [diff] [blame] | 370 | unsigned int size, enum drm_map_type type, |
Benjamin Herrenschmidt | f77d390 | 2009-02-02 16:55:46 +1100 | [diff] [blame] | 371 | enum drm_map_flags flags, struct drm_local_map ** map_ptr) |
Dave Airlie | 89625eb | 2005-09-05 21:23:23 +1000 | [diff] [blame] | 372 | { |
Dave Airlie | 5591051 | 2007-07-11 16:53:40 +1000 | [diff] [blame] | 373 | struct drm_map_list *list; |
Dave Airlie | 89625eb | 2005-09-05 21:23:23 +1000 | [diff] [blame] | 374 | int rc; |
| 375 | |
| 376 | rc = drm_addmap_core(dev, offset, size, type, flags, &list); |
| 377 | if (!rc) |
| 378 | *map_ptr = list->map; |
| 379 | return rc; |
| 380 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 381 | |
Dave Airlie | 7ab9840 | 2005-07-10 16:56:52 +1000 | [diff] [blame] | 382 | EXPORT_SYMBOL(drm_addmap); |
| 383 | |
Benjamin Herrenschmidt | f77d390 | 2009-02-02 16:55:46 +1100 | [diff] [blame] | 384 | /** |
| 385 | * Ioctl to specify a range of memory that is available for mapping by a |
| 386 | * non-root process. |
| 387 | * |
| 388 | * \param inode device inode. |
| 389 | * \param file_priv DRM file private. |
| 390 | * \param cmd command. |
| 391 | * \param arg pointer to a drm_map structure. |
| 392 | * \return zero on success or a negative value on error. |
| 393 | * |
| 394 | */ |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 395 | int drm_addmap_ioctl(struct drm_device *dev, void *data, |
| 396 | struct drm_file *file_priv) |
Dave Airlie | 7ab9840 | 2005-07-10 16:56:52 +1000 | [diff] [blame] | 397 | { |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 398 | struct drm_map *map = data; |
Dave Airlie | 5591051 | 2007-07-11 16:53:40 +1000 | [diff] [blame] | 399 | struct drm_map_list *maplist; |
Dave Airlie | 7ab9840 | 2005-07-10 16:56:52 +1000 | [diff] [blame] | 400 | int err; |
| 401 | |
Dave Airlie | 7c1c287 | 2008-11-28 14:22:24 +1000 | [diff] [blame] | 402 | if (!(capable(CAP_SYS_ADMIN) || map->type == _DRM_AGP || map->type == _DRM_SHM)) |
Dave Airlie | d985c10 | 2006-01-02 21:32:48 +1100 | [diff] [blame] | 403 | return -EPERM; |
| 404 | |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 405 | err = drm_addmap_core(dev, map->offset, map->size, map->type, |
| 406 | map->flags, &maplist); |
Dave Airlie | 7ab9840 | 2005-07-10 16:56:52 +1000 | [diff] [blame] | 407 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 408 | if (err) |
Dave Airlie | 7ab9840 | 2005-07-10 16:56:52 +1000 | [diff] [blame] | 409 | return err; |
Dave Airlie | 7ab9840 | 2005-07-10 16:56:52 +1000 | [diff] [blame] | 410 | |
Dave Airlie | 67e1a01 | 2005-10-24 18:41:39 +1000 | [diff] [blame] | 411 | /* avoid a warning on 64-bit, this casting isn't very nice, but the API is set so too late */ |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 412 | map->handle = (void *)(unsigned long)maplist->user_token; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | return 0; |
Dave Airlie | 88f399c | 2005-08-20 17:43:33 +1000 | [diff] [blame] | 414 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | /** |
| 417 | * Remove a map private from list and deallocate resources if the mapping |
| 418 | * isn't in use. |
| 419 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | * Searches the map on drm_device::maplist, removes it from the list, see if |
| 421 | * its being used, and free any associate resource (such as MTRR's) if it's not |
| 422 | * being on use. |
| 423 | * |
Dave Airlie | 7ab9840 | 2005-07-10 16:56:52 +1000 | [diff] [blame] | 424 | * \sa drm_addmap |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | */ |
Benjamin Herrenschmidt | f77d390 | 2009-02-02 16:55:46 +1100 | [diff] [blame] | 426 | int drm_rmmap_locked(struct drm_device *dev, struct drm_local_map *map) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | { |
Dave Airlie | 5591051 | 2007-07-11 16:53:40 +1000 | [diff] [blame] | 428 | struct drm_map_list *r_list = NULL, *list_t; |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 429 | drm_dma_handle_t dmah; |
Dave Airlie | bd1b331 | 2007-05-26 05:01:51 +1000 | [diff] [blame] | 430 | int found = 0; |
Dave Airlie | 7c1c287 | 2008-11-28 14:22:24 +1000 | [diff] [blame] | 431 | struct drm_master *master; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 432 | |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 433 | /* Find the list entry for the map and remove it */ |
Dave Airlie | bd1b331 | 2007-05-26 05:01:51 +1000 | [diff] [blame] | 434 | list_for_each_entry_safe(r_list, list_t, &dev->maplist, head) { |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 435 | if (r_list->map == map) { |
Dave Airlie | 7c1c287 | 2008-11-28 14:22:24 +1000 | [diff] [blame] | 436 | master = r_list->master; |
Dave Airlie | bd1b331 | 2007-05-26 05:01:51 +1000 | [diff] [blame] | 437 | list_del(&r_list->head); |
Thomas Hellstrom | 1545085 | 2007-02-08 16:14:05 +1100 | [diff] [blame] | 438 | drm_ht_remove_key(&dev->map_hash, |
| 439 | r_list->user_token >> PAGE_SHIFT); |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 440 | kfree(r_list); |
Dave Airlie | bd1b331 | 2007-05-26 05:01:51 +1000 | [diff] [blame] | 441 | found = 1; |
Dave Airlie | 2d0f9ea | 2005-07-10 14:34:13 +1000 | [diff] [blame] | 442 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | } |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 445 | |
Dave Airlie | bd1b331 | 2007-05-26 05:01:51 +1000 | [diff] [blame] | 446 | if (!found) |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 447 | return -EINVAL; |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 448 | |
| 449 | switch (map->type) { |
| 450 | case _DRM_REGISTERS: |
Christoph Hellwig | 004a772 | 2007-01-08 21:56:59 +1100 | [diff] [blame] | 451 | iounmap(map->handle); |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 452 | /* FALLTHROUGH */ |
| 453 | case _DRM_FRAME_BUFFER: |
| 454 | if (drm_core_has_MTRR(dev) && map->mtrr >= 0) { |
| 455 | int retcode; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 456 | retcode = mtrr_del(map->mtrr, map->offset, map->size); |
| 457 | DRM_DEBUG("mtrr_del=%d\n", retcode); |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 458 | } |
| 459 | break; |
| 460 | case _DRM_SHM: |
| 461 | vfree(map->handle); |
Dave Airlie | 7c1c287 | 2008-11-28 14:22:24 +1000 | [diff] [blame] | 462 | if (master) { |
| 463 | if (dev->sigdata.lock == master->lock.hw_lock) |
| 464 | dev->sigdata.lock = NULL; |
| 465 | master->lock.hw_lock = NULL; /* SHM removed */ |
| 466 | master->lock.file_priv = NULL; |
Thomas Hellstrom | 171901d | 2009-03-02 11:10:55 +0100 | [diff] [blame] | 467 | wake_up_interruptible_all(&master->lock.lock_queue); |
Dave Airlie | 7c1c287 | 2008-11-28 14:22:24 +1000 | [diff] [blame] | 468 | } |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 469 | break; |
| 470 | case _DRM_AGP: |
| 471 | case _DRM_SCATTER_GATHER: |
| 472 | break; |
| 473 | case _DRM_CONSISTENT: |
| 474 | dmah.vaddr = map->handle; |
| 475 | dmah.busaddr = map->offset; |
| 476 | dmah.size = map->size; |
| 477 | __drm_pci_free(dev, &dmah); |
| 478 | break; |
Jesse Barnes | a2c0a97 | 2008-11-05 10:31:53 -0800 | [diff] [blame] | 479 | case _DRM_GEM: |
| 480 | DRM_ERROR("tried to rmmap GEM object\n"); |
| 481 | break; |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 482 | } |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 483 | kfree(map); |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 484 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | return 0; |
| 486 | } |
Dave Airlie | 4e74f36 | 2008-12-19 10:23:14 +1100 | [diff] [blame] | 487 | EXPORT_SYMBOL(drm_rmmap_locked); |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 488 | |
Benjamin Herrenschmidt | f77d390 | 2009-02-02 16:55:46 +1100 | [diff] [blame] | 489 | int drm_rmmap(struct drm_device *dev, struct drm_local_map *map) |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 490 | { |
| 491 | int ret; |
| 492 | |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 493 | mutex_lock(&dev->struct_mutex); |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 494 | ret = drm_rmmap_locked(dev, map); |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 495 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 496 | |
| 497 | return ret; |
| 498 | } |
Jesse Barnes | ba8bbcf | 2007-11-22 14:14:14 +1000 | [diff] [blame] | 499 | EXPORT_SYMBOL(drm_rmmap); |
Dave Airlie | 7ab9840 | 2005-07-10 16:56:52 +1000 | [diff] [blame] | 500 | |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 501 | /* The rmmap ioctl appears to be unnecessary. All mappings are torn down on |
| 502 | * the last close of the device, and this is necessary for cleanup when things |
| 503 | * exit uncleanly. Therefore, having userland manually remove mappings seems |
| 504 | * like a pointless exercise since they're going away anyway. |
| 505 | * |
| 506 | * One use case might be after addmap is allowed for normal users for SHM and |
| 507 | * gets used by drivers that the server doesn't need to care about. This seems |
| 508 | * unlikely. |
Benjamin Herrenschmidt | f77d390 | 2009-02-02 16:55:46 +1100 | [diff] [blame] | 509 | * |
| 510 | * \param inode device inode. |
| 511 | * \param file_priv DRM file private. |
| 512 | * \param cmd command. |
| 513 | * \param arg pointer to a struct drm_map structure. |
| 514 | * \return zero on success or a negative value on error. |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 515 | */ |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 516 | int drm_rmmap_ioctl(struct drm_device *dev, void *data, |
| 517 | struct drm_file *file_priv) |
Dave Airlie | 7ab9840 | 2005-07-10 16:56:52 +1000 | [diff] [blame] | 518 | { |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 519 | struct drm_map *request = data; |
Benjamin Herrenschmidt | f77d390 | 2009-02-02 16:55:46 +1100 | [diff] [blame] | 520 | struct drm_local_map *map = NULL; |
Dave Airlie | 5591051 | 2007-07-11 16:53:40 +1000 | [diff] [blame] | 521 | struct drm_map_list *r_list; |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 522 | int ret; |
Dave Airlie | 7ab9840 | 2005-07-10 16:56:52 +1000 | [diff] [blame] | 523 | |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 524 | mutex_lock(&dev->struct_mutex); |
Dave Airlie | bd1b331 | 2007-05-26 05:01:51 +1000 | [diff] [blame] | 525 | list_for_each_entry(r_list, &dev->maplist, head) { |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 526 | if (r_list->map && |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 527 | r_list->user_token == (unsigned long)request->handle && |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 528 | r_list->map->flags & _DRM_REMOVABLE) { |
| 529 | map = r_list->map; |
| 530 | break; |
| 531 | } |
| 532 | } |
| 533 | |
| 534 | /* List has wrapped around to the head pointer, or its empty we didn't |
| 535 | * find anything. |
| 536 | */ |
Dave Airlie | bd1b331 | 2007-05-26 05:01:51 +1000 | [diff] [blame] | 537 | if (list_empty(&dev->maplist) || !map) { |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 538 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 539 | return -EINVAL; |
| 540 | } |
| 541 | |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 542 | /* Register and framebuffer maps are permanent */ |
| 543 | if ((map->type == _DRM_REGISTERS) || (map->type == _DRM_FRAME_BUFFER)) { |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 544 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 545 | return 0; |
| 546 | } |
| 547 | |
| 548 | ret = drm_rmmap_locked(dev, map); |
| 549 | |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 550 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 551 | |
| 552 | return ret; |
Dave Airlie | 7ab9840 | 2005-07-10 16:56:52 +1000 | [diff] [blame] | 553 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 554 | |
| 555 | /** |
| 556 | * Cleanup after an error on one of the addbufs() functions. |
| 557 | * |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 558 | * \param dev DRM device. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | * \param entry buffer entry where the error occurred. |
| 560 | * |
| 561 | * Frees any pages and buffers associated with the given entry. |
| 562 | */ |
Dave Airlie | cdd55a2 | 2007-07-11 16:32:08 +1000 | [diff] [blame] | 563 | static void drm_cleanup_buf_error(struct drm_device * dev, |
| 564 | struct drm_buf_entry * entry) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 565 | { |
| 566 | int i; |
| 567 | |
| 568 | if (entry->seg_count) { |
| 569 | for (i = 0; i < entry->seg_count; i++) { |
| 570 | if (entry->seglist[i]) { |
Dave Airlie | ddf19b9 | 2006-03-19 18:56:12 +1100 | [diff] [blame] | 571 | drm_pci_free(dev, entry->seglist[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | } |
| 573 | } |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 574 | kfree(entry->seglist); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | |
| 576 | entry->seg_count = 0; |
| 577 | } |
| 578 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 579 | if (entry->buf_count) { |
| 580 | for (i = 0; i < entry->buf_count; i++) { |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 581 | kfree(entry->buflist[i].dev_private); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 582 | } |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 583 | kfree(entry->buflist); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | |
| 585 | entry->buf_count = 0; |
| 586 | } |
| 587 | } |
| 588 | |
| 589 | #if __OS_HAS_AGP |
| 590 | /** |
Dave Airlie | d59431b | 2005-07-10 15:00:06 +1000 | [diff] [blame] | 591 | * Add AGP buffers for DMA transfers. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | * |
Dave Airlie | 84b1fd1 | 2007-07-11 15:53:27 +1000 | [diff] [blame] | 593 | * \param dev struct drm_device to which the buffers are to be added. |
Dave Airlie | c60ce62 | 2007-07-11 15:27:12 +1000 | [diff] [blame] | 594 | * \param request pointer to a struct drm_buf_desc describing the request. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 595 | * \return zero on success or a negative number on failure. |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 596 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 597 | * After some sanity checks creates a drm_buf structure for each buffer and |
| 598 | * reallocates the buffer list of the same size order to accommodate the new |
| 599 | * buffers. |
| 600 | */ |
Dave Airlie | 84b1fd1 | 2007-07-11 15:53:27 +1000 | [diff] [blame] | 601 | int drm_addbufs_agp(struct drm_device * dev, struct drm_buf_desc * request) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | { |
Dave Airlie | cdd55a2 | 2007-07-11 16:32:08 +1000 | [diff] [blame] | 603 | struct drm_device_dma *dma = dev->dma; |
| 604 | struct drm_buf_entry *entry; |
Dave Airlie | 5591051 | 2007-07-11 16:53:40 +1000 | [diff] [blame] | 605 | struct drm_agp_mem *agp_entry; |
Dave Airlie | 056219e | 2007-07-11 16:17:42 +1000 | [diff] [blame] | 606 | struct drm_buf *buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | unsigned long offset; |
| 608 | unsigned long agp_offset; |
| 609 | int count; |
| 610 | int order; |
| 611 | int size; |
| 612 | int alignment; |
| 613 | int page_order; |
| 614 | int total; |
| 615 | int byte_count; |
Dave Airlie | 54ba2f7 | 2007-02-10 12:07:47 +1100 | [diff] [blame] | 616 | int i, valid; |
Dave Airlie | 056219e | 2007-07-11 16:17:42 +1000 | [diff] [blame] | 617 | struct drm_buf **temp_buflist; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 619 | if (!dma) |
| 620 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 621 | |
Dave Airlie | d59431b | 2005-07-10 15:00:06 +1000 | [diff] [blame] | 622 | count = request->count; |
| 623 | order = drm_order(request->size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 624 | size = 1 << order; |
| 625 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 626 | alignment = (request->flags & _DRM_PAGE_ALIGN) |
| 627 | ? PAGE_ALIGN(size) : size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 628 | page_order = order - PAGE_SHIFT > 0 ? order - PAGE_SHIFT : 0; |
| 629 | total = PAGE_SIZE << page_order; |
| 630 | |
| 631 | byte_count = 0; |
Dave Airlie | d59431b | 2005-07-10 15:00:06 +1000 | [diff] [blame] | 632 | agp_offset = dev->agp->base + request->agp_start; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 633 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 634 | DRM_DEBUG("count: %d\n", count); |
| 635 | DRM_DEBUG("order: %d\n", order); |
| 636 | DRM_DEBUG("size: %d\n", size); |
Dave Airlie | d985c10 | 2006-01-02 21:32:48 +1100 | [diff] [blame] | 637 | DRM_DEBUG("agp_offset: %lx\n", agp_offset); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 638 | DRM_DEBUG("alignment: %d\n", alignment); |
| 639 | DRM_DEBUG("page_order: %d\n", page_order); |
| 640 | DRM_DEBUG("total: %d\n", total); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 641 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 642 | if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER) |
| 643 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 644 | |
Dave Airlie | 54ba2f7 | 2007-02-10 12:07:47 +1100 | [diff] [blame] | 645 | /* Make sure buffers are located in AGP memory that we own */ |
| 646 | valid = 0; |
Dave Airlie | bd1b331 | 2007-05-26 05:01:51 +1000 | [diff] [blame] | 647 | list_for_each_entry(agp_entry, &dev->agp->memory, head) { |
Dave Airlie | 54ba2f7 | 2007-02-10 12:07:47 +1100 | [diff] [blame] | 648 | if ((agp_offset >= agp_entry->bound) && |
| 649 | (agp_offset + total * count <= agp_entry->bound + agp_entry->pages * PAGE_SIZE)) { |
| 650 | valid = 1; |
| 651 | break; |
| 652 | } |
| 653 | } |
Dave Airlie | bd1b331 | 2007-05-26 05:01:51 +1000 | [diff] [blame] | 654 | if (!list_empty(&dev->agp->memory) && !valid) { |
Dave Airlie | 54ba2f7 | 2007-02-10 12:07:47 +1100 | [diff] [blame] | 655 | DRM_DEBUG("zone invalid\n"); |
| 656 | return -EINVAL; |
| 657 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 658 | spin_lock(&dev->count_lock); |
| 659 | if (dev->buf_use) { |
| 660 | spin_unlock(&dev->count_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 661 | return -EBUSY; |
| 662 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 663 | atomic_inc(&dev->buf_alloc); |
| 664 | spin_unlock(&dev->count_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 665 | |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 666 | mutex_lock(&dev->struct_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | entry = &dma->bufs[order]; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 668 | if (entry->buf_count) { |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 669 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 670 | atomic_dec(&dev->buf_alloc); |
| 671 | return -ENOMEM; /* May only call once for each order */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 672 | } |
| 673 | |
| 674 | if (count < 0 || count > 4096) { |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 675 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 676 | atomic_dec(&dev->buf_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 677 | return -EINVAL; |
| 678 | } |
| 679 | |
Davidlohr Bueso | 94e3370 | 2010-08-11 09:18:52 -0400 | [diff] [blame] | 680 | entry->buflist = kzalloc(count * sizeof(*entry->buflist), GFP_KERNEL); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 681 | if (!entry->buflist) { |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 682 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 683 | atomic_dec(&dev->buf_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 684 | return -ENOMEM; |
| 685 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 686 | |
| 687 | entry->buf_size = size; |
| 688 | entry->page_order = page_order; |
| 689 | |
| 690 | offset = 0; |
| 691 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 692 | while (entry->buf_count < count) { |
| 693 | buf = &entry->buflist[entry->buf_count]; |
| 694 | buf->idx = dma->buf_count + entry->buf_count; |
| 695 | buf->total = alignment; |
| 696 | buf->order = order; |
| 697 | buf->used = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 698 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 699 | buf->offset = (dma->byte_count + offset); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 700 | buf->bus_address = agp_offset + offset; |
| 701 | buf->address = (void *)(agp_offset + offset); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 702 | buf->next = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 703 | buf->waiting = 0; |
| 704 | buf->pending = 0; |
Eric Anholt | 6c340ea | 2007-08-25 20:23:09 +1000 | [diff] [blame] | 705 | buf->file_priv = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | |
| 707 | buf->dev_priv_size = dev->driver->dev_priv_size; |
Davidlohr Bueso | 94e3370 | 2010-08-11 09:18:52 -0400 | [diff] [blame] | 708 | buf->dev_private = kzalloc(buf->dev_priv_size, GFP_KERNEL); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 709 | if (!buf->dev_private) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 710 | /* Set count correctly so we free the proper amount. */ |
| 711 | entry->buf_count = count; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 712 | drm_cleanup_buf_error(dev, entry); |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 713 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 714 | atomic_dec(&dev->buf_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 715 | return -ENOMEM; |
| 716 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 718 | DRM_DEBUG("buffer %d @ %p\n", entry->buf_count, buf->address); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 719 | |
| 720 | offset += alignment; |
| 721 | entry->buf_count++; |
| 722 | byte_count += PAGE_SIZE << page_order; |
| 723 | } |
| 724 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 725 | DRM_DEBUG("byte_count: %d\n", byte_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 726 | |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 727 | temp_buflist = krealloc(dma->buflist, |
| 728 | (dma->buf_count + entry->buf_count) * |
| 729 | sizeof(*dma->buflist), GFP_KERNEL); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 730 | if (!temp_buflist) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 731 | /* Free the entry because it isn't valid */ |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 732 | drm_cleanup_buf_error(dev, entry); |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 733 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 734 | atomic_dec(&dev->buf_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 735 | return -ENOMEM; |
| 736 | } |
| 737 | dma->buflist = temp_buflist; |
| 738 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 739 | for (i = 0; i < entry->buf_count; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 740 | dma->buflist[i + dma->buf_count] = &entry->buflist[i]; |
| 741 | } |
| 742 | |
| 743 | dma->buf_count += entry->buf_count; |
Dave Airlie | d985c10 | 2006-01-02 21:32:48 +1100 | [diff] [blame] | 744 | dma->seg_count += entry->seg_count; |
| 745 | dma->page_count += byte_count >> PAGE_SHIFT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 746 | dma->byte_count += byte_count; |
| 747 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 748 | DRM_DEBUG("dma->buf_count : %d\n", dma->buf_count); |
| 749 | DRM_DEBUG("entry->buf_count : %d\n", entry->buf_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 750 | |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 751 | mutex_unlock(&dev->struct_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | |
Dave Airlie | d59431b | 2005-07-10 15:00:06 +1000 | [diff] [blame] | 753 | request->count = entry->buf_count; |
| 754 | request->size = size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 755 | |
| 756 | dma->flags = _DRM_DMA_USE_AGP; |
| 757 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 758 | atomic_dec(&dev->buf_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 759 | return 0; |
| 760 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 761 | EXPORT_SYMBOL(drm_addbufs_agp); |
| 762 | #endif /* __OS_HAS_AGP */ |
| 763 | |
Dave Airlie | 84b1fd1 | 2007-07-11 15:53:27 +1000 | [diff] [blame] | 764 | int drm_addbufs_pci(struct drm_device * dev, struct drm_buf_desc * request) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 765 | { |
Dave Airlie | cdd55a2 | 2007-07-11 16:32:08 +1000 | [diff] [blame] | 766 | struct drm_device_dma *dma = dev->dma; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 767 | int count; |
| 768 | int order; |
| 769 | int size; |
| 770 | int total; |
| 771 | int page_order; |
Dave Airlie | cdd55a2 | 2007-07-11 16:32:08 +1000 | [diff] [blame] | 772 | struct drm_buf_entry *entry; |
Dave Airlie | ddf19b9 | 2006-03-19 18:56:12 +1100 | [diff] [blame] | 773 | drm_dma_handle_t *dmah; |
Dave Airlie | 056219e | 2007-07-11 16:17:42 +1000 | [diff] [blame] | 774 | struct drm_buf *buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 775 | int alignment; |
| 776 | unsigned long offset; |
| 777 | int i; |
| 778 | int byte_count; |
| 779 | int page_count; |
| 780 | unsigned long *temp_pagelist; |
Dave Airlie | 056219e | 2007-07-11 16:17:42 +1000 | [diff] [blame] | 781 | struct drm_buf **temp_buflist; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 782 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 783 | if (!drm_core_check_feature(dev, DRIVER_PCI_DMA)) |
| 784 | return -EINVAL; |
Dave Airlie | d985c10 | 2006-01-02 21:32:48 +1100 | [diff] [blame] | 785 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 786 | if (!dma) |
| 787 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 788 | |
Dave Airlie | d985c10 | 2006-01-02 21:32:48 +1100 | [diff] [blame] | 789 | if (!capable(CAP_SYS_ADMIN)) |
| 790 | return -EPERM; |
| 791 | |
Dave Airlie | d59431b | 2005-07-10 15:00:06 +1000 | [diff] [blame] | 792 | count = request->count; |
| 793 | order = drm_order(request->size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 794 | size = 1 << order; |
| 795 | |
Daniel Vetter | a344a7e | 2011-10-26 00:54:41 +0200 | [diff] [blame] | 796 | DRM_DEBUG("count=%d, size=%d (%d), order=%d\n", |
| 797 | request->count, request->size, size, order); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 798 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 799 | if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER) |
| 800 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 801 | |
Dave Airlie | d59431b | 2005-07-10 15:00:06 +1000 | [diff] [blame] | 802 | alignment = (request->flags & _DRM_PAGE_ALIGN) |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 803 | ? PAGE_ALIGN(size) : size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 804 | page_order = order - PAGE_SHIFT > 0 ? order - PAGE_SHIFT : 0; |
| 805 | total = PAGE_SIZE << page_order; |
| 806 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 807 | spin_lock(&dev->count_lock); |
| 808 | if (dev->buf_use) { |
| 809 | spin_unlock(&dev->count_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 810 | return -EBUSY; |
| 811 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 812 | atomic_inc(&dev->buf_alloc); |
| 813 | spin_unlock(&dev->count_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 814 | |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 815 | mutex_lock(&dev->struct_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 816 | entry = &dma->bufs[order]; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 817 | if (entry->buf_count) { |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 818 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 819 | atomic_dec(&dev->buf_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 820 | return -ENOMEM; /* May only call once for each order */ |
| 821 | } |
| 822 | |
| 823 | if (count < 0 || count > 4096) { |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 824 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 825 | atomic_dec(&dev->buf_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 826 | return -EINVAL; |
| 827 | } |
| 828 | |
Davidlohr Bueso | 94e3370 | 2010-08-11 09:18:52 -0400 | [diff] [blame] | 829 | entry->buflist = kzalloc(count * sizeof(*entry->buflist), GFP_KERNEL); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 830 | if (!entry->buflist) { |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 831 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 832 | atomic_dec(&dev->buf_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 833 | return -ENOMEM; |
| 834 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 835 | |
Davidlohr Bueso | 94e3370 | 2010-08-11 09:18:52 -0400 | [diff] [blame] | 836 | entry->seglist = kzalloc(count * sizeof(*entry->seglist), GFP_KERNEL); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 837 | if (!entry->seglist) { |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 838 | kfree(entry->buflist); |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 839 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 840 | atomic_dec(&dev->buf_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 841 | return -ENOMEM; |
| 842 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 843 | |
| 844 | /* Keep the original pagelist until we know all the allocations |
| 845 | * have succeeded |
| 846 | */ |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 847 | temp_pagelist = kmalloc((dma->page_count + (count << page_order)) * |
| 848 | sizeof(*dma->pagelist), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 849 | if (!temp_pagelist) { |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 850 | kfree(entry->buflist); |
| 851 | kfree(entry->seglist); |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 852 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 853 | atomic_dec(&dev->buf_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 854 | return -ENOMEM; |
| 855 | } |
| 856 | memcpy(temp_pagelist, |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 857 | dma->pagelist, dma->page_count * sizeof(*dma->pagelist)); |
| 858 | DRM_DEBUG("pagelist: %d entries\n", |
| 859 | dma->page_count + (count << page_order)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 860 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 861 | entry->buf_size = size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 862 | entry->page_order = page_order; |
| 863 | byte_count = 0; |
| 864 | page_count = 0; |
| 865 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 866 | while (entry->buf_count < count) { |
Dave Airlie | bc5f452 | 2007-11-05 12:50:58 +1000 | [diff] [blame] | 867 | |
Zhenyu Wang | e6be8d9 | 2010-01-05 11:25:05 +0800 | [diff] [blame] | 868 | dmah = drm_pci_alloc(dev, PAGE_SIZE << page_order, 0x1000); |
Dave Airlie | bc5f452 | 2007-11-05 12:50:58 +1000 | [diff] [blame] | 869 | |
Dave Airlie | ddf19b9 | 2006-03-19 18:56:12 +1100 | [diff] [blame] | 870 | if (!dmah) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | /* Set count correctly so we free the proper amount. */ |
| 872 | entry->buf_count = count; |
| 873 | entry->seg_count = count; |
| 874 | drm_cleanup_buf_error(dev, entry); |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 875 | kfree(temp_pagelist); |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 876 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 877 | atomic_dec(&dev->buf_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 878 | return -ENOMEM; |
| 879 | } |
Dave Airlie | ddf19b9 | 2006-03-19 18:56:12 +1100 | [diff] [blame] | 880 | entry->seglist[entry->seg_count++] = dmah; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 881 | for (i = 0; i < (1 << page_order); i++) { |
| 882 | DRM_DEBUG("page %d @ 0x%08lx\n", |
| 883 | dma->page_count + page_count, |
Dave Airlie | ddf19b9 | 2006-03-19 18:56:12 +1100 | [diff] [blame] | 884 | (unsigned long)dmah->vaddr + PAGE_SIZE * i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 885 | temp_pagelist[dma->page_count + page_count++] |
Dave Airlie | ddf19b9 | 2006-03-19 18:56:12 +1100 | [diff] [blame] | 886 | = (unsigned long)dmah->vaddr + PAGE_SIZE * i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 887 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 888 | for (offset = 0; |
| 889 | offset + size <= total && entry->buf_count < count; |
| 890 | offset += alignment, ++entry->buf_count) { |
| 891 | buf = &entry->buflist[entry->buf_count]; |
| 892 | buf->idx = dma->buf_count + entry->buf_count; |
| 893 | buf->total = alignment; |
| 894 | buf->order = order; |
| 895 | buf->used = 0; |
| 896 | buf->offset = (dma->byte_count + byte_count + offset); |
Dave Airlie | ddf19b9 | 2006-03-19 18:56:12 +1100 | [diff] [blame] | 897 | buf->address = (void *)(dmah->vaddr + offset); |
| 898 | buf->bus_address = dmah->busaddr + offset; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 899 | buf->next = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 900 | buf->waiting = 0; |
| 901 | buf->pending = 0; |
Eric Anholt | 6c340ea | 2007-08-25 20:23:09 +1000 | [diff] [blame] | 902 | buf->file_priv = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 903 | |
| 904 | buf->dev_priv_size = dev->driver->dev_priv_size; |
Davidlohr Bueso | 94e3370 | 2010-08-11 09:18:52 -0400 | [diff] [blame] | 905 | buf->dev_private = kzalloc(buf->dev_priv_size, |
| 906 | GFP_KERNEL); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 907 | if (!buf->dev_private) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 908 | /* Set count correctly so we free the proper amount. */ |
| 909 | entry->buf_count = count; |
| 910 | entry->seg_count = count; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 911 | drm_cleanup_buf_error(dev, entry); |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 912 | kfree(temp_pagelist); |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 913 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 914 | atomic_dec(&dev->buf_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 915 | return -ENOMEM; |
| 916 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 917 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 918 | DRM_DEBUG("buffer %d @ %p\n", |
| 919 | entry->buf_count, buf->address); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 920 | } |
| 921 | byte_count += PAGE_SIZE << page_order; |
| 922 | } |
| 923 | |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 924 | temp_buflist = krealloc(dma->buflist, |
| 925 | (dma->buf_count + entry->buf_count) * |
| 926 | sizeof(*dma->buflist), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 927 | if (!temp_buflist) { |
| 928 | /* Free the entry because it isn't valid */ |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 929 | drm_cleanup_buf_error(dev, entry); |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 930 | kfree(temp_pagelist); |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 931 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 932 | atomic_dec(&dev->buf_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 933 | return -ENOMEM; |
| 934 | } |
| 935 | dma->buflist = temp_buflist; |
| 936 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 937 | for (i = 0; i < entry->buf_count; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 938 | dma->buflist[i + dma->buf_count] = &entry->buflist[i]; |
| 939 | } |
| 940 | |
Thomas Weber | 8839316 | 2010-03-16 11:47:56 +0100 | [diff] [blame] | 941 | /* No allocations failed, so now we can replace the original pagelist |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 942 | * with the new one. |
| 943 | */ |
| 944 | if (dma->page_count) { |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 945 | kfree(dma->pagelist); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 946 | } |
| 947 | dma->pagelist = temp_pagelist; |
| 948 | |
| 949 | dma->buf_count += entry->buf_count; |
| 950 | dma->seg_count += entry->seg_count; |
| 951 | dma->page_count += entry->seg_count << page_order; |
| 952 | dma->byte_count += PAGE_SIZE * (entry->seg_count << page_order); |
| 953 | |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 954 | mutex_unlock(&dev->struct_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 955 | |
Dave Airlie | d59431b | 2005-07-10 15:00:06 +1000 | [diff] [blame] | 956 | request->count = entry->buf_count; |
| 957 | request->size = size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 958 | |
George Sapountzis | 3417f33 | 2006-10-24 12:03:04 -0700 | [diff] [blame] | 959 | if (request->flags & _DRM_PCI_BUFFER_RO) |
| 960 | dma->flags = _DRM_DMA_USE_PCI_RO; |
| 961 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 962 | atomic_dec(&dev->buf_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 963 | return 0; |
| 964 | |
| 965 | } |
Dave Airlie | d84f76d | 2005-07-10 17:04:22 +1000 | [diff] [blame] | 966 | EXPORT_SYMBOL(drm_addbufs_pci); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 967 | |
Dave Airlie | 84b1fd1 | 2007-07-11 15:53:27 +1000 | [diff] [blame] | 968 | static int drm_addbufs_sg(struct drm_device * dev, struct drm_buf_desc * request) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 969 | { |
Dave Airlie | cdd55a2 | 2007-07-11 16:32:08 +1000 | [diff] [blame] | 970 | struct drm_device_dma *dma = dev->dma; |
| 971 | struct drm_buf_entry *entry; |
Dave Airlie | 056219e | 2007-07-11 16:17:42 +1000 | [diff] [blame] | 972 | struct drm_buf *buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 973 | unsigned long offset; |
| 974 | unsigned long agp_offset; |
| 975 | int count; |
| 976 | int order; |
| 977 | int size; |
| 978 | int alignment; |
| 979 | int page_order; |
| 980 | int total; |
| 981 | int byte_count; |
| 982 | int i; |
Dave Airlie | 056219e | 2007-07-11 16:17:42 +1000 | [diff] [blame] | 983 | struct drm_buf **temp_buflist; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 984 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 985 | if (!drm_core_check_feature(dev, DRIVER_SG)) |
| 986 | return -EINVAL; |
| 987 | |
| 988 | if (!dma) |
| 989 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 990 | |
Dave Airlie | d985c10 | 2006-01-02 21:32:48 +1100 | [diff] [blame] | 991 | if (!capable(CAP_SYS_ADMIN)) |
| 992 | return -EPERM; |
| 993 | |
Dave Airlie | d59431b | 2005-07-10 15:00:06 +1000 | [diff] [blame] | 994 | count = request->count; |
| 995 | order = drm_order(request->size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 996 | size = 1 << order; |
| 997 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 998 | alignment = (request->flags & _DRM_PAGE_ALIGN) |
| 999 | ? PAGE_ALIGN(size) : size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1000 | page_order = order - PAGE_SHIFT > 0 ? order - PAGE_SHIFT : 0; |
| 1001 | total = PAGE_SIZE << page_order; |
| 1002 | |
| 1003 | byte_count = 0; |
Dave Airlie | d59431b | 2005-07-10 15:00:06 +1000 | [diff] [blame] | 1004 | agp_offset = request->agp_start; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1005 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1006 | DRM_DEBUG("count: %d\n", count); |
| 1007 | DRM_DEBUG("order: %d\n", order); |
| 1008 | DRM_DEBUG("size: %d\n", size); |
| 1009 | DRM_DEBUG("agp_offset: %lu\n", agp_offset); |
| 1010 | DRM_DEBUG("alignment: %d\n", alignment); |
| 1011 | DRM_DEBUG("page_order: %d\n", page_order); |
| 1012 | DRM_DEBUG("total: %d\n", total); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1013 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1014 | if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER) |
| 1015 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1016 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1017 | spin_lock(&dev->count_lock); |
| 1018 | if (dev->buf_use) { |
| 1019 | spin_unlock(&dev->count_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1020 | return -EBUSY; |
| 1021 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1022 | atomic_inc(&dev->buf_alloc); |
| 1023 | spin_unlock(&dev->count_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1024 | |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 1025 | mutex_lock(&dev->struct_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1026 | entry = &dma->bufs[order]; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1027 | if (entry->buf_count) { |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 1028 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1029 | atomic_dec(&dev->buf_alloc); |
| 1030 | return -ENOMEM; /* May only call once for each order */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1031 | } |
| 1032 | |
| 1033 | if (count < 0 || count > 4096) { |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 1034 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1035 | atomic_dec(&dev->buf_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1036 | return -EINVAL; |
| 1037 | } |
| 1038 | |
Davidlohr Bueso | 94e3370 | 2010-08-11 09:18:52 -0400 | [diff] [blame] | 1039 | entry->buflist = kzalloc(count * sizeof(*entry->buflist), |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 1040 | GFP_KERNEL); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1041 | if (!entry->buflist) { |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 1042 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1043 | atomic_dec(&dev->buf_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1044 | return -ENOMEM; |
| 1045 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1046 | |
| 1047 | entry->buf_size = size; |
| 1048 | entry->page_order = page_order; |
| 1049 | |
| 1050 | offset = 0; |
| 1051 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1052 | while (entry->buf_count < count) { |
| 1053 | buf = &entry->buflist[entry->buf_count]; |
| 1054 | buf->idx = dma->buf_count + entry->buf_count; |
| 1055 | buf->total = alignment; |
| 1056 | buf->order = order; |
| 1057 | buf->used = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1058 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1059 | buf->offset = (dma->byte_count + offset); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1060 | buf->bus_address = agp_offset + offset; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1061 | buf->address = (void *)(agp_offset + offset |
Dave Airlie | d1f2b55 | 2005-08-05 22:11:22 +1000 | [diff] [blame] | 1062 | + (unsigned long)dev->sg->virtual); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1063 | buf->next = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1064 | buf->waiting = 0; |
| 1065 | buf->pending = 0; |
Eric Anholt | 6c340ea | 2007-08-25 20:23:09 +1000 | [diff] [blame] | 1066 | buf->file_priv = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1067 | |
| 1068 | buf->dev_priv_size = dev->driver->dev_priv_size; |
Davidlohr Bueso | 94e3370 | 2010-08-11 09:18:52 -0400 | [diff] [blame] | 1069 | buf->dev_private = kzalloc(buf->dev_priv_size, GFP_KERNEL); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1070 | if (!buf->dev_private) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1071 | /* Set count correctly so we free the proper amount. */ |
| 1072 | entry->buf_count = count; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1073 | drm_cleanup_buf_error(dev, entry); |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 1074 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1075 | atomic_dec(&dev->buf_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1076 | return -ENOMEM; |
| 1077 | } |
| 1078 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1079 | DRM_DEBUG("buffer %d @ %p\n", entry->buf_count, buf->address); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1080 | |
| 1081 | offset += alignment; |
| 1082 | entry->buf_count++; |
| 1083 | byte_count += PAGE_SIZE << page_order; |
| 1084 | } |
| 1085 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1086 | DRM_DEBUG("byte_count: %d\n", byte_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1087 | |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 1088 | temp_buflist = krealloc(dma->buflist, |
| 1089 | (dma->buf_count + entry->buf_count) * |
| 1090 | sizeof(*dma->buflist), GFP_KERNEL); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1091 | if (!temp_buflist) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1092 | /* Free the entry because it isn't valid */ |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1093 | drm_cleanup_buf_error(dev, entry); |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 1094 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1095 | atomic_dec(&dev->buf_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1096 | return -ENOMEM; |
| 1097 | } |
| 1098 | dma->buflist = temp_buflist; |
| 1099 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1100 | for (i = 0; i < entry->buf_count; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1101 | dma->buflist[i + dma->buf_count] = &entry->buflist[i]; |
| 1102 | } |
| 1103 | |
| 1104 | dma->buf_count += entry->buf_count; |
Dave Airlie | d985c10 | 2006-01-02 21:32:48 +1100 | [diff] [blame] | 1105 | dma->seg_count += entry->seg_count; |
| 1106 | dma->page_count += byte_count >> PAGE_SHIFT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1107 | dma->byte_count += byte_count; |
| 1108 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1109 | DRM_DEBUG("dma->buf_count : %d\n", dma->buf_count); |
| 1110 | DRM_DEBUG("entry->buf_count : %d\n", entry->buf_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1111 | |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 1112 | mutex_unlock(&dev->struct_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1113 | |
Dave Airlie | d59431b | 2005-07-10 15:00:06 +1000 | [diff] [blame] | 1114 | request->count = entry->buf_count; |
| 1115 | request->size = size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1116 | |
| 1117 | dma->flags = _DRM_DMA_USE_SG; |
| 1118 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1119 | atomic_dec(&dev->buf_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1120 | return 0; |
| 1121 | } |
| 1122 | |
Dave Airlie | 84b1fd1 | 2007-07-11 15:53:27 +1000 | [diff] [blame] | 1123 | static int drm_addbufs_fb(struct drm_device * dev, struct drm_buf_desc * request) |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1124 | { |
Dave Airlie | cdd55a2 | 2007-07-11 16:32:08 +1000 | [diff] [blame] | 1125 | struct drm_device_dma *dma = dev->dma; |
| 1126 | struct drm_buf_entry *entry; |
Dave Airlie | 056219e | 2007-07-11 16:17:42 +1000 | [diff] [blame] | 1127 | struct drm_buf *buf; |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1128 | unsigned long offset; |
| 1129 | unsigned long agp_offset; |
| 1130 | int count; |
| 1131 | int order; |
| 1132 | int size; |
| 1133 | int alignment; |
| 1134 | int page_order; |
| 1135 | int total; |
| 1136 | int byte_count; |
| 1137 | int i; |
Dave Airlie | 056219e | 2007-07-11 16:17:42 +1000 | [diff] [blame] | 1138 | struct drm_buf **temp_buflist; |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1139 | |
| 1140 | if (!drm_core_check_feature(dev, DRIVER_FB_DMA)) |
| 1141 | return -EINVAL; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1142 | |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1143 | if (!dma) |
| 1144 | return -EINVAL; |
| 1145 | |
Dave Airlie | d985c10 | 2006-01-02 21:32:48 +1100 | [diff] [blame] | 1146 | if (!capable(CAP_SYS_ADMIN)) |
| 1147 | return -EPERM; |
| 1148 | |
Dave Airlie | d59431b | 2005-07-10 15:00:06 +1000 | [diff] [blame] | 1149 | count = request->count; |
| 1150 | order = drm_order(request->size); |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1151 | size = 1 << order; |
| 1152 | |
Dave Airlie | d59431b | 2005-07-10 15:00:06 +1000 | [diff] [blame] | 1153 | alignment = (request->flags & _DRM_PAGE_ALIGN) |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1154 | ? PAGE_ALIGN(size) : size; |
| 1155 | page_order = order - PAGE_SHIFT > 0 ? order - PAGE_SHIFT : 0; |
| 1156 | total = PAGE_SIZE << page_order; |
| 1157 | |
| 1158 | byte_count = 0; |
Dave Airlie | d59431b | 2005-07-10 15:00:06 +1000 | [diff] [blame] | 1159 | agp_offset = request->agp_start; |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1160 | |
| 1161 | DRM_DEBUG("count: %d\n", count); |
| 1162 | DRM_DEBUG("order: %d\n", order); |
| 1163 | DRM_DEBUG("size: %d\n", size); |
| 1164 | DRM_DEBUG("agp_offset: %lu\n", agp_offset); |
| 1165 | DRM_DEBUG("alignment: %d\n", alignment); |
| 1166 | DRM_DEBUG("page_order: %d\n", page_order); |
| 1167 | DRM_DEBUG("total: %d\n", total); |
| 1168 | |
| 1169 | if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER) |
| 1170 | return -EINVAL; |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1171 | |
| 1172 | spin_lock(&dev->count_lock); |
| 1173 | if (dev->buf_use) { |
| 1174 | spin_unlock(&dev->count_lock); |
| 1175 | return -EBUSY; |
| 1176 | } |
| 1177 | atomic_inc(&dev->buf_alloc); |
| 1178 | spin_unlock(&dev->count_lock); |
| 1179 | |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 1180 | mutex_lock(&dev->struct_mutex); |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1181 | entry = &dma->bufs[order]; |
| 1182 | if (entry->buf_count) { |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 1183 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1184 | atomic_dec(&dev->buf_alloc); |
| 1185 | return -ENOMEM; /* May only call once for each order */ |
| 1186 | } |
| 1187 | |
| 1188 | if (count < 0 || count > 4096) { |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 1189 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1190 | atomic_dec(&dev->buf_alloc); |
| 1191 | return -EINVAL; |
| 1192 | } |
| 1193 | |
Davidlohr Bueso | 94e3370 | 2010-08-11 09:18:52 -0400 | [diff] [blame] | 1194 | entry->buflist = kzalloc(count * sizeof(*entry->buflist), |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 1195 | GFP_KERNEL); |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1196 | if (!entry->buflist) { |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 1197 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1198 | atomic_dec(&dev->buf_alloc); |
| 1199 | return -ENOMEM; |
| 1200 | } |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1201 | |
| 1202 | entry->buf_size = size; |
| 1203 | entry->page_order = page_order; |
| 1204 | |
| 1205 | offset = 0; |
| 1206 | |
| 1207 | while (entry->buf_count < count) { |
| 1208 | buf = &entry->buflist[entry->buf_count]; |
| 1209 | buf->idx = dma->buf_count + entry->buf_count; |
| 1210 | buf->total = alignment; |
| 1211 | buf->order = order; |
| 1212 | buf->used = 0; |
| 1213 | |
| 1214 | buf->offset = (dma->byte_count + offset); |
| 1215 | buf->bus_address = agp_offset + offset; |
| 1216 | buf->address = (void *)(agp_offset + offset); |
| 1217 | buf->next = NULL; |
| 1218 | buf->waiting = 0; |
| 1219 | buf->pending = 0; |
Eric Anholt | 6c340ea | 2007-08-25 20:23:09 +1000 | [diff] [blame] | 1220 | buf->file_priv = NULL; |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1221 | |
| 1222 | buf->dev_priv_size = dev->driver->dev_priv_size; |
Davidlohr Bueso | 94e3370 | 2010-08-11 09:18:52 -0400 | [diff] [blame] | 1223 | buf->dev_private = kzalloc(buf->dev_priv_size, GFP_KERNEL); |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1224 | if (!buf->dev_private) { |
| 1225 | /* Set count correctly so we free the proper amount. */ |
| 1226 | entry->buf_count = count; |
| 1227 | drm_cleanup_buf_error(dev, entry); |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 1228 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1229 | atomic_dec(&dev->buf_alloc); |
| 1230 | return -ENOMEM; |
| 1231 | } |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1232 | |
| 1233 | DRM_DEBUG("buffer %d @ %p\n", entry->buf_count, buf->address); |
| 1234 | |
| 1235 | offset += alignment; |
| 1236 | entry->buf_count++; |
| 1237 | byte_count += PAGE_SIZE << page_order; |
| 1238 | } |
| 1239 | |
| 1240 | DRM_DEBUG("byte_count: %d\n", byte_count); |
| 1241 | |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 1242 | temp_buflist = krealloc(dma->buflist, |
| 1243 | (dma->buf_count + entry->buf_count) * |
| 1244 | sizeof(*dma->buflist), GFP_KERNEL); |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1245 | if (!temp_buflist) { |
| 1246 | /* Free the entry because it isn't valid */ |
| 1247 | drm_cleanup_buf_error(dev, entry); |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 1248 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1249 | atomic_dec(&dev->buf_alloc); |
| 1250 | return -ENOMEM; |
| 1251 | } |
| 1252 | dma->buflist = temp_buflist; |
| 1253 | |
| 1254 | for (i = 0; i < entry->buf_count; i++) { |
| 1255 | dma->buflist[i + dma->buf_count] = &entry->buflist[i]; |
| 1256 | } |
| 1257 | |
| 1258 | dma->buf_count += entry->buf_count; |
Dave Airlie | d985c10 | 2006-01-02 21:32:48 +1100 | [diff] [blame] | 1259 | dma->seg_count += entry->seg_count; |
| 1260 | dma->page_count += byte_count >> PAGE_SHIFT; |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1261 | dma->byte_count += byte_count; |
| 1262 | |
| 1263 | DRM_DEBUG("dma->buf_count : %d\n", dma->buf_count); |
| 1264 | DRM_DEBUG("entry->buf_count : %d\n", entry->buf_count); |
| 1265 | |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 1266 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1267 | |
Dave Airlie | d59431b | 2005-07-10 15:00:06 +1000 | [diff] [blame] | 1268 | request->count = entry->buf_count; |
| 1269 | request->size = size; |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1270 | |
| 1271 | dma->flags = _DRM_DMA_USE_FB; |
| 1272 | |
| 1273 | atomic_dec(&dev->buf_alloc); |
| 1274 | return 0; |
| 1275 | } |
Dave Airlie | d985c10 | 2006-01-02 21:32:48 +1100 | [diff] [blame] | 1276 | |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1277 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1278 | /** |
| 1279 | * Add buffers for DMA transfers (ioctl). |
| 1280 | * |
| 1281 | * \param inode device inode. |
Eric Anholt | 6c340ea | 2007-08-25 20:23:09 +1000 | [diff] [blame] | 1282 | * \param file_priv DRM file private. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1283 | * \param cmd command. |
Dave Airlie | c60ce62 | 2007-07-11 15:27:12 +1000 | [diff] [blame] | 1284 | * \param arg pointer to a struct drm_buf_desc request. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1285 | * \return zero on success or a negative number on failure. |
| 1286 | * |
| 1287 | * According with the memory type specified in drm_buf_desc::flags and the |
| 1288 | * build options, it dispatches the call either to addbufs_agp(), |
| 1289 | * addbufs_sg() or addbufs_pci() for AGP, scatter-gather or consistent |
| 1290 | * PCI memory respectively. |
| 1291 | */ |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1292 | int drm_addbufs(struct drm_device *dev, void *data, |
| 1293 | struct drm_file *file_priv) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1294 | { |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1295 | struct drm_buf_desc *request = data; |
Dave Airlie | d59431b | 2005-07-10 15:00:06 +1000 | [diff] [blame] | 1296 | int ret; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1297 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1298 | if (!drm_core_check_feature(dev, DRIVER_HAVE_DMA)) |
| 1299 | return -EINVAL; |
| 1300 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1301 | #if __OS_HAS_AGP |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1302 | if (request->flags & _DRM_AGP_BUFFER) |
| 1303 | ret = drm_addbufs_agp(dev, request); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1304 | else |
| 1305 | #endif |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1306 | if (request->flags & _DRM_SG_BUFFER) |
| 1307 | ret = drm_addbufs_sg(dev, request); |
| 1308 | else if (request->flags & _DRM_FB_BUFFER) |
| 1309 | ret = drm_addbufs_fb(dev, request); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1310 | else |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1311 | ret = drm_addbufs_pci(dev, request); |
Dave Airlie | d59431b | 2005-07-10 15:00:06 +1000 | [diff] [blame] | 1312 | |
Dave Airlie | d59431b | 2005-07-10 15:00:06 +1000 | [diff] [blame] | 1313 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1314 | } |
| 1315 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1316 | /** |
| 1317 | * Get information about the buffer mappings. |
| 1318 | * |
| 1319 | * This was originally mean for debugging purposes, or by a sophisticated |
| 1320 | * client library to determine how best to use the available buffers (e.g., |
| 1321 | * large buffers can be used for image transfer). |
| 1322 | * |
| 1323 | * \param inode device inode. |
Eric Anholt | 6c340ea | 2007-08-25 20:23:09 +1000 | [diff] [blame] | 1324 | * \param file_priv DRM file private. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1325 | * \param cmd command. |
| 1326 | * \param arg pointer to a drm_buf_info structure. |
| 1327 | * \return zero on success or a negative number on failure. |
| 1328 | * |
| 1329 | * Increments drm_device::buf_use while holding the drm_device::count_lock |
| 1330 | * lock, preventing of allocating more buffers after this call. Information |
| 1331 | * about each requested buffer is then copied into user space. |
| 1332 | */ |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1333 | int drm_infobufs(struct drm_device *dev, void *data, |
| 1334 | struct drm_file *file_priv) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1335 | { |
Dave Airlie | cdd55a2 | 2007-07-11 16:32:08 +1000 | [diff] [blame] | 1336 | struct drm_device_dma *dma = dev->dma; |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1337 | struct drm_buf_info *request = data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1338 | int i; |
| 1339 | int count; |
| 1340 | |
| 1341 | if (!drm_core_check_feature(dev, DRIVER_HAVE_DMA)) |
| 1342 | return -EINVAL; |
| 1343 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1344 | if (!dma) |
| 1345 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1346 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1347 | spin_lock(&dev->count_lock); |
| 1348 | if (atomic_read(&dev->buf_alloc)) { |
| 1349 | spin_unlock(&dev->count_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1350 | return -EBUSY; |
| 1351 | } |
| 1352 | ++dev->buf_use; /* Can't allocate more after this call */ |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1353 | spin_unlock(&dev->count_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1354 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1355 | for (i = 0, count = 0; i < DRM_MAX_ORDER + 1; i++) { |
| 1356 | if (dma->bufs[i].buf_count) |
| 1357 | ++count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1358 | } |
| 1359 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1360 | DRM_DEBUG("count = %d\n", count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1361 | |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1362 | if (request->count >= count) { |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1363 | for (i = 0, count = 0; i < DRM_MAX_ORDER + 1; i++) { |
| 1364 | if (dma->bufs[i].buf_count) { |
Dave Airlie | c60ce62 | 2007-07-11 15:27:12 +1000 | [diff] [blame] | 1365 | struct drm_buf_desc __user *to = |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1366 | &request->list[count]; |
Dave Airlie | cdd55a2 | 2007-07-11 16:32:08 +1000 | [diff] [blame] | 1367 | struct drm_buf_entry *from = &dma->bufs[i]; |
| 1368 | struct drm_freelist *list = &dma->bufs[i].freelist; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1369 | if (copy_to_user(&to->count, |
| 1370 | &from->buf_count, |
| 1371 | sizeof(from->buf_count)) || |
| 1372 | copy_to_user(&to->size, |
| 1373 | &from->buf_size, |
| 1374 | sizeof(from->buf_size)) || |
| 1375 | copy_to_user(&to->low_mark, |
| 1376 | &list->low_mark, |
| 1377 | sizeof(list->low_mark)) || |
| 1378 | copy_to_user(&to->high_mark, |
| 1379 | &list->high_mark, |
| 1380 | sizeof(list->high_mark))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1381 | return -EFAULT; |
| 1382 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1383 | DRM_DEBUG("%d %d %d %d %d\n", |
| 1384 | i, |
| 1385 | dma->bufs[i].buf_count, |
| 1386 | dma->bufs[i].buf_size, |
| 1387 | dma->bufs[i].freelist.low_mark, |
| 1388 | dma->bufs[i].freelist.high_mark); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1389 | ++count; |
| 1390 | } |
| 1391 | } |
| 1392 | } |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1393 | request->count = count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1394 | |
| 1395 | return 0; |
| 1396 | } |
| 1397 | |
| 1398 | /** |
| 1399 | * Specifies a low and high water mark for buffer allocation |
| 1400 | * |
| 1401 | * \param inode device inode. |
Eric Anholt | 6c340ea | 2007-08-25 20:23:09 +1000 | [diff] [blame] | 1402 | * \param file_priv DRM file private. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1403 | * \param cmd command. |
| 1404 | * \param arg a pointer to a drm_buf_desc structure. |
| 1405 | * \return zero on success or a negative number on failure. |
| 1406 | * |
| 1407 | * Verifies that the size order is bounded between the admissible orders and |
| 1408 | * updates the respective drm_device_dma::bufs entry low and high water mark. |
| 1409 | * |
| 1410 | * \note This ioctl is deprecated and mostly never used. |
| 1411 | */ |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1412 | int drm_markbufs(struct drm_device *dev, void *data, |
| 1413 | struct drm_file *file_priv) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1414 | { |
Dave Airlie | cdd55a2 | 2007-07-11 16:32:08 +1000 | [diff] [blame] | 1415 | struct drm_device_dma *dma = dev->dma; |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1416 | struct drm_buf_desc *request = data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1417 | int order; |
Dave Airlie | cdd55a2 | 2007-07-11 16:32:08 +1000 | [diff] [blame] | 1418 | struct drm_buf_entry *entry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1419 | |
| 1420 | if (!drm_core_check_feature(dev, DRIVER_HAVE_DMA)) |
| 1421 | return -EINVAL; |
| 1422 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1423 | if (!dma) |
| 1424 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1425 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1426 | DRM_DEBUG("%d, %d, %d\n", |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1427 | request->size, request->low_mark, request->high_mark); |
| 1428 | order = drm_order(request->size); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1429 | if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER) |
| 1430 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1431 | entry = &dma->bufs[order]; |
| 1432 | |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1433 | if (request->low_mark < 0 || request->low_mark > entry->buf_count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1434 | return -EINVAL; |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1435 | if (request->high_mark < 0 || request->high_mark > entry->buf_count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1436 | return -EINVAL; |
| 1437 | |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1438 | entry->freelist.low_mark = request->low_mark; |
| 1439 | entry->freelist.high_mark = request->high_mark; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1440 | |
| 1441 | return 0; |
| 1442 | } |
| 1443 | |
| 1444 | /** |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1445 | * Unreserve the buffers in list, previously reserved using drmDMA. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1446 | * |
| 1447 | * \param inode device inode. |
Eric Anholt | 6c340ea | 2007-08-25 20:23:09 +1000 | [diff] [blame] | 1448 | * \param file_priv DRM file private. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1449 | * \param cmd command. |
| 1450 | * \param arg pointer to a drm_buf_free structure. |
| 1451 | * \return zero on success or a negative number on failure. |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1452 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1453 | * Calls free_buffer() for each used buffer. |
| 1454 | * This function is primarily used for debugging. |
| 1455 | */ |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1456 | int drm_freebufs(struct drm_device *dev, void *data, |
| 1457 | struct drm_file *file_priv) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1458 | { |
Dave Airlie | cdd55a2 | 2007-07-11 16:32:08 +1000 | [diff] [blame] | 1459 | struct drm_device_dma *dma = dev->dma; |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1460 | struct drm_buf_free *request = data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1461 | int i; |
| 1462 | int idx; |
Dave Airlie | 056219e | 2007-07-11 16:17:42 +1000 | [diff] [blame] | 1463 | struct drm_buf *buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1464 | |
| 1465 | if (!drm_core_check_feature(dev, DRIVER_HAVE_DMA)) |
| 1466 | return -EINVAL; |
| 1467 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1468 | if (!dma) |
| 1469 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1470 | |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1471 | DRM_DEBUG("%d\n", request->count); |
| 1472 | for (i = 0; i < request->count; i++) { |
| 1473 | if (copy_from_user(&idx, &request->list[i], sizeof(idx))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1474 | return -EFAULT; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1475 | if (idx < 0 || idx >= dma->buf_count) { |
| 1476 | DRM_ERROR("Index %d (of %d max)\n", |
| 1477 | idx, dma->buf_count - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1478 | return -EINVAL; |
| 1479 | } |
| 1480 | buf = dma->buflist[idx]; |
Eric Anholt | 6c340ea | 2007-08-25 20:23:09 +1000 | [diff] [blame] | 1481 | if (buf->file_priv != file_priv) { |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1482 | DRM_ERROR("Process %d freeing buffer not owned\n", |
Pavel Emelyanov | ba25f9d | 2007-10-18 23:40:40 -0700 | [diff] [blame] | 1483 | task_pid_nr(current)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1484 | return -EINVAL; |
| 1485 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1486 | drm_free_buffer(dev, buf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1487 | } |
| 1488 | |
| 1489 | return 0; |
| 1490 | } |
| 1491 | |
| 1492 | /** |
| 1493 | * Maps all of the DMA buffers into client-virtual space (ioctl). |
| 1494 | * |
| 1495 | * \param inode device inode. |
Eric Anholt | 6c340ea | 2007-08-25 20:23:09 +1000 | [diff] [blame] | 1496 | * \param file_priv DRM file private. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1497 | * \param cmd command. |
| 1498 | * \param arg pointer to a drm_buf_map structure. |
| 1499 | * \return zero on success or a negative number on failure. |
| 1500 | * |
Linus Torvalds | 6be5ceb | 2012-04-20 17:13:58 -0700 | [diff] [blame] | 1501 | * Maps the AGP, SG or PCI buffer region with vm_mmap(), and copies information |
| 1502 | * about each buffer into user space. For PCI buffers, it calls vm_mmap() with |
George Sapountzis | 3417f33 | 2006-10-24 12:03:04 -0700 | [diff] [blame] | 1503 | * offset equal to 0, which drm_mmap() interpretes as PCI buffers and calls |
| 1504 | * drm_mmap_dma(). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1505 | */ |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1506 | int drm_mapbufs(struct drm_device *dev, void *data, |
| 1507 | struct drm_file *file_priv) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1508 | { |
Dave Airlie | cdd55a2 | 2007-07-11 16:32:08 +1000 | [diff] [blame] | 1509 | struct drm_device_dma *dma = dev->dma; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1510 | int retcode = 0; |
| 1511 | const int zero = 0; |
| 1512 | unsigned long virtual; |
| 1513 | unsigned long address; |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1514 | struct drm_buf_map *request = data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1515 | int i; |
| 1516 | |
| 1517 | if (!drm_core_check_feature(dev, DRIVER_HAVE_DMA)) |
| 1518 | return -EINVAL; |
| 1519 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1520 | if (!dma) |
| 1521 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1522 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1523 | spin_lock(&dev->count_lock); |
| 1524 | if (atomic_read(&dev->buf_alloc)) { |
| 1525 | spin_unlock(&dev->count_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1526 | return -EBUSY; |
| 1527 | } |
| 1528 | dev->buf_use++; /* Can't allocate more after this call */ |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1529 | spin_unlock(&dev->count_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1530 | |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1531 | if (request->count >= dma->buf_count) { |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1532 | if ((drm_core_has_AGP(dev) && (dma->flags & _DRM_DMA_USE_AGP)) |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1533 | || (drm_core_check_feature(dev, DRIVER_SG) |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1534 | && (dma->flags & _DRM_DMA_USE_SG)) |
| 1535 | || (drm_core_check_feature(dev, DRIVER_FB_DMA) |
| 1536 | && (dma->flags & _DRM_DMA_USE_FB))) { |
Benjamin Herrenschmidt | f77d390 | 2009-02-02 16:55:46 +1100 | [diff] [blame] | 1537 | struct drm_local_map *map = dev->agp_buffer_map; |
Dave Airlie | d1f2b55 | 2005-08-05 22:11:22 +1000 | [diff] [blame] | 1538 | unsigned long token = dev->agp_buffer_token; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1539 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1540 | if (!map) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1541 | retcode = -EINVAL; |
| 1542 | goto done; |
| 1543 | } |
Linus Torvalds | 6be5ceb | 2012-04-20 17:13:58 -0700 | [diff] [blame] | 1544 | virtual = vm_mmap(file_priv->filp, 0, map->size, |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1545 | PROT_READ | PROT_WRITE, |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1546 | MAP_SHARED, |
| 1547 | token); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1548 | } else { |
Linus Torvalds | 6be5ceb | 2012-04-20 17:13:58 -0700 | [diff] [blame] | 1549 | virtual = vm_mmap(file_priv->filp, 0, dma->byte_count, |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1550 | PROT_READ | PROT_WRITE, |
| 1551 | MAP_SHARED, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1552 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1553 | if (virtual > -1024UL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1554 | /* Real error */ |
| 1555 | retcode = (signed long)virtual; |
| 1556 | goto done; |
| 1557 | } |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1558 | request->virtual = (void __user *)virtual; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1559 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1560 | for (i = 0; i < dma->buf_count; i++) { |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1561 | if (copy_to_user(&request->list[i].idx, |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1562 | &dma->buflist[i]->idx, |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1563 | sizeof(request->list[0].idx))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1564 | retcode = -EFAULT; |
| 1565 | goto done; |
| 1566 | } |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1567 | if (copy_to_user(&request->list[i].total, |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1568 | &dma->buflist[i]->total, |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1569 | sizeof(request->list[0].total))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1570 | retcode = -EFAULT; |
| 1571 | goto done; |
| 1572 | } |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1573 | if (copy_to_user(&request->list[i].used, |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1574 | &zero, sizeof(zero))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1575 | retcode = -EFAULT; |
| 1576 | goto done; |
| 1577 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1578 | address = virtual + dma->buflist[i]->offset; /* *** */ |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1579 | if (copy_to_user(&request->list[i].address, |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1580 | &address, sizeof(address))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1581 | retcode = -EFAULT; |
| 1582 | goto done; |
| 1583 | } |
| 1584 | } |
| 1585 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1586 | done: |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1587 | request->count = dma->buf_count; |
| 1588 | DRM_DEBUG("%d buffers, retcode = %d\n", request->count, retcode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1589 | |
| 1590 | return retcode; |
| 1591 | } |
| 1592 | |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 1593 | /** |
| 1594 | * Compute size order. Returns the exponent of the smaller power of two which |
| 1595 | * is greater or equal to given number. |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1596 | * |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 1597 | * \param size size. |
| 1598 | * \return order. |
| 1599 | * |
| 1600 | * \todo Can be made faster. |
| 1601 | */ |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1602 | int drm_order(unsigned long size) |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 1603 | { |
| 1604 | int order; |
| 1605 | unsigned long tmp; |
| 1606 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1607 | for (order = 0, tmp = size >> 1; tmp; tmp >>= 1, order++) ; |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 1608 | |
| 1609 | if (size & (size - 1)) |
| 1610 | ++order; |
| 1611 | |
| 1612 | return order; |
| 1613 | } |
| 1614 | EXPORT_SYMBOL(drm_order); |