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> |
| 39 | #include <asm/shmparam.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | #include "drmP.h" |
| 41 | |
Dave Airlie | 5591051 | 2007-07-11 16:53:40 +1000 | [diff] [blame] | 42 | 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] | 43 | struct drm_local_map *map) |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 44 | { |
Dave Airlie | 5591051 | 2007-07-11 16:53:40 +1000 | [diff] [blame] | 45 | struct drm_map_list *entry; |
Dave Airlie | bd1b331 | 2007-05-26 05:01:51 +1000 | [diff] [blame] | 46 | list_for_each_entry(entry, &dev->maplist, head) { |
Benjamin Herrenschmidt | 41c2e75 | 2009-02-02 16:55:47 +1100 | [diff] [blame] | 47 | /* |
| 48 | * Because the kernel-userspace ABI is fixed at a 32-bit offset |
| 49 | * while PCI resources may live above that, we ignore the map |
| 50 | * offset for maps of type _DRM_FRAMEBUFFER or _DRM_REGISTERS. |
| 51 | * It is assumed that each driver will have only one resource of |
| 52 | * each type. |
| 53 | */ |
| 54 | if (!entry->map || |
| 55 | map->type != entry->map->type || |
| 56 | entry->master != dev->primary->master) |
| 57 | continue; |
| 58 | switch (map->type) { |
| 59 | case _DRM_SHM: |
| 60 | if (map->flags != _DRM_CONTAINS_LOCK) |
| 61 | break; |
| 62 | case _DRM_REGISTERS: |
| 63 | case _DRM_FRAME_BUFFER: |
Dave Airlie | 89625eb | 2005-09-05 21:23:23 +1000 | [diff] [blame] | 64 | return entry; |
Benjamin Herrenschmidt | 41c2e75 | 2009-02-02 16:55:47 +1100 | [diff] [blame] | 65 | default: /* Make gcc happy */ |
| 66 | ; |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 67 | } |
Benjamin Herrenschmidt | 41c2e75 | 2009-02-02 16:55:47 +1100 | [diff] [blame] | 68 | if (entry->map->offset == map->offset) |
| 69 | return entry; |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 70 | } |
| 71 | |
| 72 | return NULL; |
| 73 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | |
Dave Airlie | e0be428 | 2007-07-12 10:26:44 +1000 | [diff] [blame] | 75 | 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] | 76 | unsigned long user_token, int hashed_handle, int shm) |
Dave Airlie | d1f2b55 | 2005-08-05 22:11:22 +1000 | [diff] [blame] | 77 | { |
David Miller | f1a2a9b | 2009-02-18 15:41:02 -0800 | [diff] [blame] | 78 | int use_hashed_handle, shift; |
| 79 | unsigned long add; |
| 80 | |
Dave Airlie | c2604ce | 2006-08-12 16:03:26 +1000 | [diff] [blame] | 81 | #if (BITS_PER_LONG == 64) |
Thomas Hellstrom | 8d153f7 | 2006-08-07 22:36:47 +1000 | [diff] [blame] | 82 | use_hashed_handle = ((user_token & 0xFFFFFFFF00000000UL) || hashed_handle); |
| 83 | #elif (BITS_PER_LONG == 32) |
| 84 | use_hashed_handle = hashed_handle; |
| 85 | #else |
| 86 | #error Unsupported long size. Neither 64 nor 32 bits. |
| 87 | #endif |
Dave Airlie | d1f2b55 | 2005-08-05 22:11:22 +1000 | [diff] [blame] | 88 | |
Thomas Hellstrom | e08870c | 2006-09-22 04:18:37 +1000 | [diff] [blame] | 89 | if (!use_hashed_handle) { |
| 90 | int ret; |
Thomas Hellstrom | 1545085 | 2007-02-08 16:14:05 +1100 | [diff] [blame] | 91 | hash->key = user_token >> PAGE_SHIFT; |
Thomas Hellstrom | e08870c | 2006-09-22 04:18:37 +1000 | [diff] [blame] | 92 | ret = drm_ht_insert_item(&dev->map_hash, hash); |
| 93 | if (ret != -EINVAL) |
| 94 | return ret; |
Dave Airlie | d1f2b55 | 2005-08-05 22:11:22 +1000 | [diff] [blame] | 95 | } |
David Miller | f1a2a9b | 2009-02-18 15:41:02 -0800 | [diff] [blame] | 96 | |
| 97 | shift = 0; |
| 98 | add = DRM_MAP_HASH_OFFSET >> PAGE_SHIFT; |
| 99 | if (shm && (SHMLBA > PAGE_SIZE)) { |
| 100 | int bits = ilog2(SHMLBA >> PAGE_SHIFT) + 1; |
| 101 | |
| 102 | /* For shared memory, we have to preserve the SHMLBA |
| 103 | * bits of the eventual vma->vm_pgoff value during |
| 104 | * mmap(). Otherwise we run into cache aliasing problems |
| 105 | * on some platforms. On these platforms, the pgoff of |
| 106 | * a mmap() request is used to pick a suitable virtual |
| 107 | * address for the mmap() region such that it will not |
| 108 | * cause cache aliasing problems. |
| 109 | * |
| 110 | * Therefore, make sure the SHMLBA relevant bits of the |
| 111 | * hash value we use are equal to those in the original |
| 112 | * kernel virtual address. |
| 113 | */ |
| 114 | shift = bits; |
| 115 | add |= ((user_token >> PAGE_SHIFT) & ((1UL << bits) - 1UL)); |
| 116 | } |
| 117 | |
Thomas Hellstrom | e08870c | 2006-09-22 04:18:37 +1000 | [diff] [blame] | 118 | return drm_ht_just_insert_please(&dev->map_hash, hash, |
| 119 | user_token, 32 - PAGE_SHIFT - 3, |
David Miller | f1a2a9b | 2009-02-18 15:41:02 -0800 | [diff] [blame] | 120 | shift, add); |
Dave Airlie | d1f2b55 | 2005-08-05 22:11:22 +1000 | [diff] [blame] | 121 | } |
Dave Airlie | 9a18664 | 2005-06-23 21:29:18 +1000 | [diff] [blame] | 122 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | /** |
Benjamin Herrenschmidt | f77d390 | 2009-02-02 16:55:46 +1100 | [diff] [blame] | 124 | * Core function to create a range of memory available for mapping by a |
| 125 | * non-root process. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | * |
| 127 | * Adjusts the memory offset to its absolute value according to the mapping |
| 128 | * type. Adds the map to the map list drm_device::maplist. Adds MTRR's where |
| 129 | * applicable and if supported by the kernel. |
| 130 | */ |
Benjamin Herrenschmidt | 41c2e75 | 2009-02-02 16:55:47 +1100 | [diff] [blame] | 131 | 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] | 132 | unsigned int size, enum drm_map_type type, |
Dave Airlie | 5591051 | 2007-07-11 16:53:40 +1000 | [diff] [blame] | 133 | enum drm_map_flags flags, |
| 134 | struct drm_map_list ** maplist) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | { |
Benjamin Herrenschmidt | f77d390 | 2009-02-02 16:55:46 +1100 | [diff] [blame] | 136 | struct drm_local_map *map; |
Dave Airlie | 5591051 | 2007-07-11 16:53:40 +1000 | [diff] [blame] | 137 | struct drm_map_list *list; |
Dave Airlie | 9c8da5e | 2005-07-10 15:38:56 +1000 | [diff] [blame] | 138 | drm_dma_handle_t *dmah; |
Thomas Hellstrom | 8d153f7 | 2006-08-07 22:36:47 +1000 | [diff] [blame] | 139 | unsigned long user_token; |
| 140 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 142 | map = kmalloc(sizeof(*map), GFP_KERNEL); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 143 | if (!map) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | return -ENOMEM; |
| 145 | |
Dave Airlie | 7ab9840 | 2005-07-10 16:56:52 +1000 | [diff] [blame] | 146 | map->offset = offset; |
| 147 | map->size = size; |
| 148 | map->flags = flags; |
| 149 | map->type = type; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | |
| 151 | /* Only allow shared memory to be removable since we only keep enough |
| 152 | * book keeping information about shared memory to allow for removal |
| 153 | * when processes fork. |
| 154 | */ |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 155 | if ((map->flags & _DRM_REMOVABLE) && map->type != _DRM_SHM) { |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 156 | kfree(map); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | return -EINVAL; |
| 158 | } |
Benjamin Herrenschmidt | 41c2e75 | 2009-02-02 16:55:47 +1100 | [diff] [blame] | 159 | DRM_DEBUG("offset = 0x%08llx, size = 0x%08lx, type = %d\n", |
| 160 | (unsigned long long)map->offset, map->size, map->type); |
Benjamin Herrenschmidt | b674137 | 2009-05-18 11:56:16 +1000 | [diff] [blame] | 161 | |
| 162 | /* page-align _DRM_SHM maps. They are allocated here so there is no security |
| 163 | * hole created by that and it works around various broken drivers that use |
| 164 | * a non-aligned quantity to map the SAREA. --BenH |
| 165 | */ |
| 166 | if (map->type == _DRM_SHM) |
| 167 | map->size = PAGE_ALIGN(map->size); |
| 168 | |
Benjamin Herrenschmidt | 41c2e75 | 2009-02-02 16:55:47 +1100 | [diff] [blame] | 169 | if ((map->offset & (~(resource_size_t)PAGE_MASK)) || (map->size & (~PAGE_MASK))) { |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 170 | kfree(map); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | return -EINVAL; |
| 172 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 173 | map->mtrr = -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | map->handle = NULL; |
| 175 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 176 | switch (map->type) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | case _DRM_REGISTERS: |
| 178 | case _DRM_FRAME_BUFFER: |
Jordan Crouse | 4b7fb9b | 2010-05-27 13:40:26 -0600 | [diff] [blame^] | 179 | #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] | 180 | if (map->offset + (map->size-1) < map->offset || |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 181 | map->offset < virt_to_phys(high_memory)) { |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 182 | kfree(map); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 183 | return -EINVAL; |
| 184 | } |
| 185 | #endif |
| 186 | #ifdef __alpha__ |
| 187 | map->offset += dev->hose->mem_space->start; |
| 188 | #endif |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 189 | /* Some drivers preinitialize some maps, without the X Server |
| 190 | * needing to be aware of it. Therefore, we just return success |
| 191 | * when the server tries to create a duplicate map. |
| 192 | */ |
Dave Airlie | 89625eb | 2005-09-05 21:23:23 +1000 | [diff] [blame] | 193 | list = drm_find_matching_map(dev, map); |
| 194 | if (list != NULL) { |
| 195 | if (list->map->size != map->size) { |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 196 | DRM_DEBUG("Matching maps of type %d with " |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 197 | "mismatched sizes, (%ld vs %ld)\n", |
| 198 | map->type, map->size, |
| 199 | list->map->size); |
Dave Airlie | 89625eb | 2005-09-05 21:23:23 +1000 | [diff] [blame] | 200 | list->map->size = map->size; |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 201 | } |
| 202 | |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 203 | kfree(map); |
Dave Airlie | 89625eb | 2005-09-05 21:23:23 +1000 | [diff] [blame] | 204 | *maplist = list; |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 205 | return 0; |
| 206 | } |
| 207 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | if (drm_core_has_MTRR(dev)) { |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 209 | if (map->type == _DRM_FRAME_BUFFER || |
| 210 | (map->flags & _DRM_WRITE_COMBINING)) { |
| 211 | map->mtrr = mtrr_add(map->offset, map->size, |
| 212 | MTRR_TYPE_WRCOMB, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | } |
| 214 | } |
Scott Thompson | 0769d39 | 2007-08-25 18:17:49 +1000 | [diff] [blame] | 215 | if (map->type == _DRM_REGISTERS) { |
Christoph Hellwig | 004a772 | 2007-01-08 21:56:59 +1100 | [diff] [blame] | 216 | map->handle = ioremap(map->offset, map->size); |
Scott Thompson | 0769d39 | 2007-08-25 18:17:49 +1000 | [diff] [blame] | 217 | if (!map->handle) { |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 218 | kfree(map); |
Scott Thompson | 0769d39 | 2007-08-25 18:17:49 +1000 | [diff] [blame] | 219 | return -ENOMEM; |
| 220 | } |
| 221 | } |
Dave Airlie | bc5f452 | 2007-11-05 12:50:58 +1000 | [diff] [blame] | 222 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | case _DRM_SHM: |
Dave Airlie | 54ba2f7 | 2007-02-10 12:07:47 +1100 | [diff] [blame] | 225 | list = drm_find_matching_map(dev, map); |
| 226 | if (list != NULL) { |
| 227 | if(list->map->size != map->size) { |
| 228 | DRM_DEBUG("Matching maps of type %d with " |
| 229 | "mismatched sizes, (%ld vs %ld)\n", |
| 230 | map->type, map->size, list->map->size); |
| 231 | list->map->size = map->size; |
| 232 | } |
| 233 | |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 234 | kfree(map); |
Dave Airlie | 54ba2f7 | 2007-02-10 12:07:47 +1100 | [diff] [blame] | 235 | *maplist = list; |
| 236 | return 0; |
| 237 | } |
Thomas Hellstrom | f239b7b | 2007-01-08 21:22:50 +1100 | [diff] [blame] | 238 | map->handle = vmalloc_user(map->size); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 239 | DRM_DEBUG("%lu %d %p\n", |
| 240 | map->size, drm_order(map->size), map->handle); |
| 241 | if (!map->handle) { |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 242 | kfree(map); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | return -ENOMEM; |
| 244 | } |
| 245 | map->offset = (unsigned long)map->handle; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 246 | if (map->flags & _DRM_CONTAINS_LOCK) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | /* Prevent a 2nd X Server from creating a 2nd lock */ |
Dave Airlie | 7c1c287 | 2008-11-28 14:22:24 +1000 | [diff] [blame] | 248 | if (dev->primary->master->lock.hw_lock != NULL) { |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 249 | vfree(map->handle); |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 250 | kfree(map); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | return -EBUSY; |
| 252 | } |
Dave Airlie | 7c1c287 | 2008-11-28 14:22:24 +1000 | [diff] [blame] | 253 | 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] | 254 | } |
| 255 | break; |
Dave Airlie | 54ba2f7 | 2007-02-10 12:07:47 +1100 | [diff] [blame] | 256 | case _DRM_AGP: { |
Dave Airlie | 5591051 | 2007-07-11 16:53:40 +1000 | [diff] [blame] | 257 | struct drm_agp_mem *entry; |
Dave Airlie | 54ba2f7 | 2007-02-10 12:07:47 +1100 | [diff] [blame] | 258 | int valid = 0; |
| 259 | |
| 260 | if (!drm_core_has_AGP(dev)) { |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 261 | kfree(map); |
Dave Airlie | 54ba2f7 | 2007-02-10 12:07:47 +1100 | [diff] [blame] | 262 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | } |
Dave Airlie | 54ba2f7 | 2007-02-10 12:07:47 +1100 | [diff] [blame] | 264 | #ifdef __alpha__ |
| 265 | map->offset += dev->hose->mem_space->start; |
| 266 | #endif |
Eric Anholt | 47a184a | 2007-11-22 16:55:15 +1000 | [diff] [blame] | 267 | /* In some cases (i810 driver), user space may have already |
| 268 | * added the AGP base itself, because dev->agp->base previously |
| 269 | * only got set during AGP enable. So, only add the base |
| 270 | * address if the map's offset isn't already within the |
| 271 | * aperture. |
Dave Airlie | 54ba2f7 | 2007-02-10 12:07:47 +1100 | [diff] [blame] | 272 | */ |
Eric Anholt | 47a184a | 2007-11-22 16:55:15 +1000 | [diff] [blame] | 273 | if (map->offset < dev->agp->base || |
| 274 | map->offset > dev->agp->base + |
| 275 | dev->agp->agp_info.aper_size * 1024 * 1024 - 1) { |
| 276 | map->offset += dev->agp->base; |
| 277 | } |
Dave Airlie | 54ba2f7 | 2007-02-10 12:07:47 +1100 | [diff] [blame] | 278 | map->mtrr = dev->agp->agp_mtrr; /* for getmap */ |
| 279 | |
| 280 | /* This assumes the DRM is in total control of AGP space. |
| 281 | * It's not always the case as AGP can be in the control |
| 282 | * of user space (i.e. i810 driver). So this loop will get |
| 283 | * skipped and we double check that dev->agp->memory is |
| 284 | * actually set as well as being invalid before EPERM'ing |
| 285 | */ |
Dave Airlie | bd1b331 | 2007-05-26 05:01:51 +1000 | [diff] [blame] | 286 | list_for_each_entry(entry, &dev->agp->memory, head) { |
Dave Airlie | 54ba2f7 | 2007-02-10 12:07:47 +1100 | [diff] [blame] | 287 | if ((map->offset >= entry->bound) && |
| 288 | (map->offset + map->size <= entry->bound + entry->pages * PAGE_SIZE)) { |
| 289 | valid = 1; |
| 290 | break; |
| 291 | } |
| 292 | } |
Dave Airlie | bd1b331 | 2007-05-26 05:01:51 +1000 | [diff] [blame] | 293 | if (!list_empty(&dev->agp->memory) && !valid) { |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 294 | kfree(map); |
Dave Airlie | 54ba2f7 | 2007-02-10 12:07:47 +1100 | [diff] [blame] | 295 | return -EPERM; |
| 296 | } |
Benjamin Herrenschmidt | 41c2e75 | 2009-02-02 16:55:47 +1100 | [diff] [blame] | 297 | DRM_DEBUG("AGP offset = 0x%08llx, size = 0x%08lx\n", |
| 298 | (unsigned long long)map->offset, map->size); |
Dave Airlie | 54ba2f7 | 2007-02-10 12:07:47 +1100 | [diff] [blame] | 299 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | break; |
Dave Airlie | 54ba2f7 | 2007-02-10 12:07:47 +1100 | [diff] [blame] | 301 | } |
Pekka Paalanen | 812c369 | 2009-09-17 22:59:54 +0300 | [diff] [blame] | 302 | case _DRM_GEM: |
| 303 | DRM_ERROR("tried to addmap GEM object\n"); |
| 304 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | case _DRM_SCATTER_GATHER: |
| 306 | if (!dev->sg) { |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 307 | kfree(map); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | return -EINVAL; |
| 309 | } |
Dave Airlie | d1f2b55 | 2005-08-05 22:11:22 +1000 | [diff] [blame] | 310 | map->offset += (unsigned long)dev->sg->virtual; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | break; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 312 | case _DRM_CONSISTENT: |
Dave Airlie | 2d0f9ea | 2005-07-10 14:34:13 +1000 | [diff] [blame] | 313 | /* dma_addr_t is 64bit on i386 with CONFIG_HIGHMEM64G, |
Dave Airlie | 9c8da5e | 2005-07-10 15:38:56 +1000 | [diff] [blame] | 314 | * As we're limiting the address to 2^32-1 (or less), |
Dave Airlie | 2d0f9ea | 2005-07-10 14:34:13 +1000 | [diff] [blame] | 315 | * casting it down to 32 bits is no problem, but we |
| 316 | * need to point to a 64bit variable first. */ |
Zhenyu Wang | e6be8d9 | 2010-01-05 11:25:05 +0800 | [diff] [blame] | 317 | dmah = drm_pci_alloc(dev, map->size, map->size); |
Dave Airlie | 9c8da5e | 2005-07-10 15:38:56 +1000 | [diff] [blame] | 318 | if (!dmah) { |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 319 | kfree(map); |
Dave Airlie | 2d0f9ea | 2005-07-10 14:34:13 +1000 | [diff] [blame] | 320 | return -ENOMEM; |
| 321 | } |
Dave Airlie | 9c8da5e | 2005-07-10 15:38:56 +1000 | [diff] [blame] | 322 | map->handle = dmah->vaddr; |
| 323 | map->offset = (unsigned long)dmah->busaddr; |
| 324 | kfree(dmah); |
Dave Airlie | 2d0f9ea | 2005-07-10 14:34:13 +1000 | [diff] [blame] | 325 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | default: |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 327 | kfree(map); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | return -EINVAL; |
| 329 | } |
| 330 | |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 331 | list = kmalloc(sizeof(*list), GFP_KERNEL); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 332 | if (!list) { |
Amol Lad | 85abb3f | 2006-10-25 09:55:34 -0700 | [diff] [blame] | 333 | if (map->type == _DRM_REGISTERS) |
Christoph Hellwig | 004a772 | 2007-01-08 21:56:59 +1100 | [diff] [blame] | 334 | iounmap(map->handle); |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 335 | kfree(map); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | return -EINVAL; |
| 337 | } |
| 338 | memset(list, 0, sizeof(*list)); |
| 339 | list->map = map; |
| 340 | |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 341 | mutex_lock(&dev->struct_mutex); |
Dave Airlie | bd1b331 | 2007-05-26 05:01:51 +1000 | [diff] [blame] | 342 | list_add(&list->head, &dev->maplist); |
Thomas Hellstrom | 8d153f7 | 2006-08-07 22:36:47 +1000 | [diff] [blame] | 343 | |
Dave Airlie | d1f2b55 | 2005-08-05 22:11:22 +1000 | [diff] [blame] | 344 | /* Assign a 32-bit handle */ |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 345 | /* We do it here so that dev->struct_mutex protects the increment */ |
Thomas Hellstrom | 8d153f7 | 2006-08-07 22:36:47 +1000 | [diff] [blame] | 346 | user_token = (map->type == _DRM_SHM) ? (unsigned long)map->handle : |
| 347 | map->offset; |
David Miller | f1a2a9b | 2009-02-18 15:41:02 -0800 | [diff] [blame] | 348 | ret = drm_map_handle(dev, &list->hash, user_token, 0, |
| 349 | (map->type == _DRM_SHM)); |
Thomas Hellstrom | 8d153f7 | 2006-08-07 22:36:47 +1000 | [diff] [blame] | 350 | if (ret) { |
Amol Lad | 85abb3f | 2006-10-25 09:55:34 -0700 | [diff] [blame] | 351 | if (map->type == _DRM_REGISTERS) |
Christoph Hellwig | 004a772 | 2007-01-08 21:56:59 +1100 | [diff] [blame] | 352 | iounmap(map->handle); |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 353 | kfree(map); |
| 354 | kfree(list); |
Thomas Hellstrom | 8d153f7 | 2006-08-07 22:36:47 +1000 | [diff] [blame] | 355 | mutex_unlock(&dev->struct_mutex); |
| 356 | return ret; |
| 357 | } |
| 358 | |
Thomas Hellstrom | 1545085 | 2007-02-08 16:14:05 +1100 | [diff] [blame] | 359 | list->user_token = list->hash.key << PAGE_SHIFT; |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 360 | mutex_unlock(&dev->struct_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | |
Ben Skeggs | 2ff2e8a | 2009-05-26 10:35:52 +1000 | [diff] [blame] | 362 | if (!(map->flags & _DRM_DRIVER)) |
| 363 | list->master = dev->primary->master; |
Dave Airlie | 89625eb | 2005-09-05 21:23:23 +1000 | [diff] [blame] | 364 | *maplist = list; |
Dave Airlie | 7ab9840 | 2005-07-10 16:56:52 +1000 | [diff] [blame] | 365 | return 0; |
Dave Airlie | 54ba2f7 | 2007-02-10 12:07:47 +1100 | [diff] [blame] | 366 | } |
Dave Airlie | 89625eb | 2005-09-05 21:23:23 +1000 | [diff] [blame] | 367 | |
Benjamin Herrenschmidt | 41c2e75 | 2009-02-02 16:55:47 +1100 | [diff] [blame] | 368 | int drm_addmap(struct drm_device * dev, resource_size_t offset, |
Dave Airlie | c60ce62 | 2007-07-11 15:27:12 +1000 | [diff] [blame] | 369 | unsigned int size, enum drm_map_type type, |
Benjamin Herrenschmidt | f77d390 | 2009-02-02 16:55:46 +1100 | [diff] [blame] | 370 | enum drm_map_flags flags, struct drm_local_map ** map_ptr) |
Dave Airlie | 89625eb | 2005-09-05 21:23:23 +1000 | [diff] [blame] | 371 | { |
Dave Airlie | 5591051 | 2007-07-11 16:53:40 +1000 | [diff] [blame] | 372 | struct drm_map_list *list; |
Dave Airlie | 89625eb | 2005-09-05 21:23:23 +1000 | [diff] [blame] | 373 | int rc; |
| 374 | |
| 375 | rc = drm_addmap_core(dev, offset, size, type, flags, &list); |
| 376 | if (!rc) |
| 377 | *map_ptr = list->map; |
| 378 | return rc; |
| 379 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 380 | |
Dave Airlie | 7ab9840 | 2005-07-10 16:56:52 +1000 | [diff] [blame] | 381 | EXPORT_SYMBOL(drm_addmap); |
| 382 | |
Benjamin Herrenschmidt | f77d390 | 2009-02-02 16:55:46 +1100 | [diff] [blame] | 383 | /** |
| 384 | * Ioctl to specify a range of memory that is available for mapping by a |
| 385 | * non-root process. |
| 386 | * |
| 387 | * \param inode device inode. |
| 388 | * \param file_priv DRM file private. |
| 389 | * \param cmd command. |
| 390 | * \param arg pointer to a drm_map structure. |
| 391 | * \return zero on success or a negative value on error. |
| 392 | * |
| 393 | */ |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 394 | int drm_addmap_ioctl(struct drm_device *dev, void *data, |
| 395 | struct drm_file *file_priv) |
Dave Airlie | 7ab9840 | 2005-07-10 16:56:52 +1000 | [diff] [blame] | 396 | { |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 397 | struct drm_map *map = data; |
Dave Airlie | 5591051 | 2007-07-11 16:53:40 +1000 | [diff] [blame] | 398 | struct drm_map_list *maplist; |
Dave Airlie | 7ab9840 | 2005-07-10 16:56:52 +1000 | [diff] [blame] | 399 | int err; |
| 400 | |
Dave Airlie | 7c1c287 | 2008-11-28 14:22:24 +1000 | [diff] [blame] | 401 | 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] | 402 | return -EPERM; |
| 403 | |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 404 | err = drm_addmap_core(dev, map->offset, map->size, map->type, |
| 405 | map->flags, &maplist); |
Dave Airlie | 7ab9840 | 2005-07-10 16:56:52 +1000 | [diff] [blame] | 406 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 407 | if (err) |
Dave Airlie | 7ab9840 | 2005-07-10 16:56:52 +1000 | [diff] [blame] | 408 | return err; |
Dave Airlie | 7ab9840 | 2005-07-10 16:56:52 +1000 | [diff] [blame] | 409 | |
Dave Airlie | 67e1a01 | 2005-10-24 18:41:39 +1000 | [diff] [blame] | 410 | /* 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] | 411 | map->handle = (void *)(unsigned long)maplist->user_token; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | return 0; |
Dave Airlie | 88f399c | 2005-08-20 17:43:33 +1000 | [diff] [blame] | 413 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | /** |
| 416 | * Remove a map private from list and deallocate resources if the mapping |
| 417 | * isn't in use. |
| 418 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | * Searches the map on drm_device::maplist, removes it from the list, see if |
| 420 | * its being used, and free any associate resource (such as MTRR's) if it's not |
| 421 | * being on use. |
| 422 | * |
Dave Airlie | 7ab9840 | 2005-07-10 16:56:52 +1000 | [diff] [blame] | 423 | * \sa drm_addmap |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | */ |
Benjamin Herrenschmidt | f77d390 | 2009-02-02 16:55:46 +1100 | [diff] [blame] | 425 | 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] | 426 | { |
Dave Airlie | 5591051 | 2007-07-11 16:53:40 +1000 | [diff] [blame] | 427 | struct drm_map_list *r_list = NULL, *list_t; |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 428 | drm_dma_handle_t dmah; |
Dave Airlie | bd1b331 | 2007-05-26 05:01:51 +1000 | [diff] [blame] | 429 | int found = 0; |
Dave Airlie | 7c1c287 | 2008-11-28 14:22:24 +1000 | [diff] [blame] | 430 | struct drm_master *master; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 431 | |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 432 | /* Find the list entry for the map and remove it */ |
Dave Airlie | bd1b331 | 2007-05-26 05:01:51 +1000 | [diff] [blame] | 433 | list_for_each_entry_safe(r_list, list_t, &dev->maplist, head) { |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 434 | if (r_list->map == map) { |
Dave Airlie | 7c1c287 | 2008-11-28 14:22:24 +1000 | [diff] [blame] | 435 | master = r_list->master; |
Dave Airlie | bd1b331 | 2007-05-26 05:01:51 +1000 | [diff] [blame] | 436 | list_del(&r_list->head); |
Thomas Hellstrom | 1545085 | 2007-02-08 16:14:05 +1100 | [diff] [blame] | 437 | drm_ht_remove_key(&dev->map_hash, |
| 438 | r_list->user_token >> PAGE_SHIFT); |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 439 | kfree(r_list); |
Dave Airlie | bd1b331 | 2007-05-26 05:01:51 +1000 | [diff] [blame] | 440 | found = 1; |
Dave Airlie | 2d0f9ea | 2005-07-10 14:34:13 +1000 | [diff] [blame] | 441 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 442 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | } |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 444 | |
Dave Airlie | bd1b331 | 2007-05-26 05:01:51 +1000 | [diff] [blame] | 445 | if (!found) |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 446 | return -EINVAL; |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 447 | |
| 448 | switch (map->type) { |
| 449 | case _DRM_REGISTERS: |
Christoph Hellwig | 004a772 | 2007-01-08 21:56:59 +1100 | [diff] [blame] | 450 | iounmap(map->handle); |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 451 | /* FALLTHROUGH */ |
| 452 | case _DRM_FRAME_BUFFER: |
| 453 | if (drm_core_has_MTRR(dev) && map->mtrr >= 0) { |
| 454 | int retcode; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 455 | retcode = mtrr_del(map->mtrr, map->offset, map->size); |
| 456 | DRM_DEBUG("mtrr_del=%d\n", retcode); |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 457 | } |
| 458 | break; |
| 459 | case _DRM_SHM: |
| 460 | vfree(map->handle); |
Dave Airlie | 7c1c287 | 2008-11-28 14:22:24 +1000 | [diff] [blame] | 461 | if (master) { |
| 462 | if (dev->sigdata.lock == master->lock.hw_lock) |
| 463 | dev->sigdata.lock = NULL; |
| 464 | master->lock.hw_lock = NULL; /* SHM removed */ |
| 465 | master->lock.file_priv = NULL; |
Thomas Hellstrom | 171901d | 2009-03-02 11:10:55 +0100 | [diff] [blame] | 466 | wake_up_interruptible_all(&master->lock.lock_queue); |
Dave Airlie | 7c1c287 | 2008-11-28 14:22:24 +1000 | [diff] [blame] | 467 | } |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 468 | break; |
| 469 | case _DRM_AGP: |
| 470 | case _DRM_SCATTER_GATHER: |
| 471 | break; |
| 472 | case _DRM_CONSISTENT: |
| 473 | dmah.vaddr = map->handle; |
| 474 | dmah.busaddr = map->offset; |
| 475 | dmah.size = map->size; |
| 476 | __drm_pci_free(dev, &dmah); |
| 477 | break; |
Jesse Barnes | a2c0a97 | 2008-11-05 10:31:53 -0800 | [diff] [blame] | 478 | case _DRM_GEM: |
| 479 | DRM_ERROR("tried to rmmap GEM object\n"); |
| 480 | break; |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 481 | } |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 482 | kfree(map); |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 483 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 484 | return 0; |
| 485 | } |
Dave Airlie | 4e74f36 | 2008-12-19 10:23:14 +1100 | [diff] [blame] | 486 | EXPORT_SYMBOL(drm_rmmap_locked); |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 487 | |
Benjamin Herrenschmidt | f77d390 | 2009-02-02 16:55:46 +1100 | [diff] [blame] | 488 | int drm_rmmap(struct drm_device *dev, struct drm_local_map *map) |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 489 | { |
| 490 | int ret; |
| 491 | |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 492 | mutex_lock(&dev->struct_mutex); |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 493 | ret = drm_rmmap_locked(dev, map); |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 494 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 495 | |
| 496 | return ret; |
| 497 | } |
Jesse Barnes | ba8bbcf | 2007-11-22 14:14:14 +1000 | [diff] [blame] | 498 | EXPORT_SYMBOL(drm_rmmap); |
Dave Airlie | 7ab9840 | 2005-07-10 16:56:52 +1000 | [diff] [blame] | 499 | |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 500 | /* The rmmap ioctl appears to be unnecessary. All mappings are torn down on |
| 501 | * the last close of the device, and this is necessary for cleanup when things |
| 502 | * exit uncleanly. Therefore, having userland manually remove mappings seems |
| 503 | * like a pointless exercise since they're going away anyway. |
| 504 | * |
| 505 | * One use case might be after addmap is allowed for normal users for SHM and |
| 506 | * gets used by drivers that the server doesn't need to care about. This seems |
| 507 | * unlikely. |
Benjamin Herrenschmidt | f77d390 | 2009-02-02 16:55:46 +1100 | [diff] [blame] | 508 | * |
| 509 | * \param inode device inode. |
| 510 | * \param file_priv DRM file private. |
| 511 | * \param cmd command. |
| 512 | * \param arg pointer to a struct drm_map structure. |
| 513 | * \return zero on success or a negative value on error. |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 514 | */ |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 515 | int drm_rmmap_ioctl(struct drm_device *dev, void *data, |
| 516 | struct drm_file *file_priv) |
Dave Airlie | 7ab9840 | 2005-07-10 16:56:52 +1000 | [diff] [blame] | 517 | { |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 518 | struct drm_map *request = data; |
Benjamin Herrenschmidt | f77d390 | 2009-02-02 16:55:46 +1100 | [diff] [blame] | 519 | struct drm_local_map *map = NULL; |
Dave Airlie | 5591051 | 2007-07-11 16:53:40 +1000 | [diff] [blame] | 520 | struct drm_map_list *r_list; |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 521 | int ret; |
Dave Airlie | 7ab9840 | 2005-07-10 16:56:52 +1000 | [diff] [blame] | 522 | |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 523 | mutex_lock(&dev->struct_mutex); |
Dave Airlie | bd1b331 | 2007-05-26 05:01:51 +1000 | [diff] [blame] | 524 | list_for_each_entry(r_list, &dev->maplist, head) { |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 525 | if (r_list->map && |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 526 | r_list->user_token == (unsigned long)request->handle && |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 527 | r_list->map->flags & _DRM_REMOVABLE) { |
| 528 | map = r_list->map; |
| 529 | break; |
| 530 | } |
| 531 | } |
| 532 | |
| 533 | /* List has wrapped around to the head pointer, or its empty we didn't |
| 534 | * find anything. |
| 535 | */ |
Dave Airlie | bd1b331 | 2007-05-26 05:01:51 +1000 | [diff] [blame] | 536 | if (list_empty(&dev->maplist) || !map) { |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 537 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 538 | return -EINVAL; |
| 539 | } |
| 540 | |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 541 | /* Register and framebuffer maps are permanent */ |
| 542 | if ((map->type == _DRM_REGISTERS) || (map->type == _DRM_FRAME_BUFFER)) { |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 543 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 544 | return 0; |
| 545 | } |
| 546 | |
| 547 | ret = drm_rmmap_locked(dev, map); |
| 548 | |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 549 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 550 | |
| 551 | return ret; |
Dave Airlie | 7ab9840 | 2005-07-10 16:56:52 +1000 | [diff] [blame] | 552 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | |
| 554 | /** |
| 555 | * Cleanup after an error on one of the addbufs() functions. |
| 556 | * |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 557 | * \param dev DRM device. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | * \param entry buffer entry where the error occurred. |
| 559 | * |
| 560 | * Frees any pages and buffers associated with the given entry. |
| 561 | */ |
Dave Airlie | cdd55a2 | 2007-07-11 16:32:08 +1000 | [diff] [blame] | 562 | static void drm_cleanup_buf_error(struct drm_device * dev, |
| 563 | struct drm_buf_entry * entry) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | { |
| 565 | int i; |
| 566 | |
| 567 | if (entry->seg_count) { |
| 568 | for (i = 0; i < entry->seg_count; i++) { |
| 569 | if (entry->seglist[i]) { |
Dave Airlie | ddf19b9 | 2006-03-19 18:56:12 +1100 | [diff] [blame] | 570 | drm_pci_free(dev, entry->seglist[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | } |
| 572 | } |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 573 | kfree(entry->seglist); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | |
| 575 | entry->seg_count = 0; |
| 576 | } |
| 577 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 578 | if (entry->buf_count) { |
| 579 | for (i = 0; i < entry->buf_count; i++) { |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 580 | kfree(entry->buflist[i].dev_private); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 581 | } |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 582 | kfree(entry->buflist); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 583 | |
| 584 | entry->buf_count = 0; |
| 585 | } |
| 586 | } |
| 587 | |
| 588 | #if __OS_HAS_AGP |
| 589 | /** |
Dave Airlie | d59431b | 2005-07-10 15:00:06 +1000 | [diff] [blame] | 590 | * Add AGP buffers for DMA transfers. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 591 | * |
Dave Airlie | 84b1fd1 | 2007-07-11 15:53:27 +1000 | [diff] [blame] | 592 | * \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] | 593 | * \param request pointer to a struct drm_buf_desc describing the request. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 594 | * \return zero on success or a negative number on failure. |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 595 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | * After some sanity checks creates a drm_buf structure for each buffer and |
| 597 | * reallocates the buffer list of the same size order to accommodate the new |
| 598 | * buffers. |
| 599 | */ |
Dave Airlie | 84b1fd1 | 2007-07-11 15:53:27 +1000 | [diff] [blame] | 600 | 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] | 601 | { |
Dave Airlie | cdd55a2 | 2007-07-11 16:32:08 +1000 | [diff] [blame] | 602 | struct drm_device_dma *dma = dev->dma; |
| 603 | struct drm_buf_entry *entry; |
Dave Airlie | 5591051 | 2007-07-11 16:53:40 +1000 | [diff] [blame] | 604 | struct drm_agp_mem *agp_entry; |
Dave Airlie | 056219e | 2007-07-11 16:17:42 +1000 | [diff] [blame] | 605 | struct drm_buf *buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 606 | unsigned long offset; |
| 607 | unsigned long agp_offset; |
| 608 | int count; |
| 609 | int order; |
| 610 | int size; |
| 611 | int alignment; |
| 612 | int page_order; |
| 613 | int total; |
| 614 | int byte_count; |
Dave Airlie | 54ba2f7 | 2007-02-10 12:07:47 +1100 | [diff] [blame] | 615 | int i, valid; |
Dave Airlie | 056219e | 2007-07-11 16:17:42 +1000 | [diff] [blame] | 616 | struct drm_buf **temp_buflist; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 617 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 618 | if (!dma) |
| 619 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | |
Dave Airlie | d59431b | 2005-07-10 15:00:06 +1000 | [diff] [blame] | 621 | count = request->count; |
| 622 | order = drm_order(request->size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 623 | size = 1 << order; |
| 624 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 625 | alignment = (request->flags & _DRM_PAGE_ALIGN) |
| 626 | ? PAGE_ALIGN(size) : size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 627 | page_order = order - PAGE_SHIFT > 0 ? order - PAGE_SHIFT : 0; |
| 628 | total = PAGE_SIZE << page_order; |
| 629 | |
| 630 | byte_count = 0; |
Dave Airlie | d59431b | 2005-07-10 15:00:06 +1000 | [diff] [blame] | 631 | agp_offset = dev->agp->base + request->agp_start; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 632 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 633 | DRM_DEBUG("count: %d\n", count); |
| 634 | DRM_DEBUG("order: %d\n", order); |
| 635 | DRM_DEBUG("size: %d\n", size); |
Dave Airlie | d985c10 | 2006-01-02 21:32:48 +1100 | [diff] [blame] | 636 | DRM_DEBUG("agp_offset: %lx\n", agp_offset); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 637 | DRM_DEBUG("alignment: %d\n", alignment); |
| 638 | DRM_DEBUG("page_order: %d\n", page_order); |
| 639 | DRM_DEBUG("total: %d\n", total); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 640 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 641 | if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER) |
| 642 | return -EINVAL; |
| 643 | if (dev->queue_count) |
| 644 | return -EBUSY; /* Not while in use */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | |
Dave Airlie | 54ba2f7 | 2007-02-10 12:07:47 +1100 | [diff] [blame] | 646 | /* Make sure buffers are located in AGP memory that we own */ |
| 647 | valid = 0; |
Dave Airlie | bd1b331 | 2007-05-26 05:01:51 +1000 | [diff] [blame] | 648 | list_for_each_entry(agp_entry, &dev->agp->memory, head) { |
Dave Airlie | 54ba2f7 | 2007-02-10 12:07:47 +1100 | [diff] [blame] | 649 | if ((agp_offset >= agp_entry->bound) && |
| 650 | (agp_offset + total * count <= agp_entry->bound + agp_entry->pages * PAGE_SIZE)) { |
| 651 | valid = 1; |
| 652 | break; |
| 653 | } |
| 654 | } |
Dave Airlie | bd1b331 | 2007-05-26 05:01:51 +1000 | [diff] [blame] | 655 | if (!list_empty(&dev->agp->memory) && !valid) { |
Dave Airlie | 54ba2f7 | 2007-02-10 12:07:47 +1100 | [diff] [blame] | 656 | DRM_DEBUG("zone invalid\n"); |
| 657 | return -EINVAL; |
| 658 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 659 | spin_lock(&dev->count_lock); |
| 660 | if (dev->buf_use) { |
| 661 | spin_unlock(&dev->count_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 662 | return -EBUSY; |
| 663 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 664 | atomic_inc(&dev->buf_alloc); |
| 665 | spin_unlock(&dev->count_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 666 | |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 667 | mutex_lock(&dev->struct_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 668 | entry = &dma->bufs[order]; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 669 | if (entry->buf_count) { |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 670 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 671 | atomic_dec(&dev->buf_alloc); |
| 672 | return -ENOMEM; /* May only call once for each order */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 673 | } |
| 674 | |
| 675 | if (count < 0 || count > 4096) { |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 676 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 677 | atomic_dec(&dev->buf_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 678 | return -EINVAL; |
| 679 | } |
| 680 | |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 681 | entry->buflist = kmalloc(count * sizeof(*entry->buflist), GFP_KERNEL); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 682 | if (!entry->buflist) { |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 683 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 684 | atomic_dec(&dev->buf_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 685 | return -ENOMEM; |
| 686 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 687 | memset(entry->buflist, 0, count * sizeof(*entry->buflist)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | |
| 689 | entry->buf_size = size; |
| 690 | entry->page_order = page_order; |
| 691 | |
| 692 | offset = 0; |
| 693 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 694 | while (entry->buf_count < count) { |
| 695 | buf = &entry->buflist[entry->buf_count]; |
| 696 | buf->idx = dma->buf_count + entry->buf_count; |
| 697 | buf->total = alignment; |
| 698 | buf->order = order; |
| 699 | buf->used = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 700 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 701 | buf->offset = (dma->byte_count + offset); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 702 | buf->bus_address = agp_offset + offset; |
| 703 | buf->address = (void *)(agp_offset + offset); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 704 | buf->next = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 705 | buf->waiting = 0; |
| 706 | buf->pending = 0; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 707 | init_waitqueue_head(&buf->dma_wait); |
Eric Anholt | 6c340ea | 2007-08-25 20:23:09 +1000 | [diff] [blame] | 708 | buf->file_priv = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 709 | |
| 710 | buf->dev_priv_size = dev->driver->dev_priv_size; |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 711 | buf->dev_private = kmalloc(buf->dev_priv_size, GFP_KERNEL); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 712 | if (!buf->dev_private) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 713 | /* Set count correctly so we free the proper amount. */ |
| 714 | entry->buf_count = count; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 715 | drm_cleanup_buf_error(dev, entry); |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 716 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 717 | atomic_dec(&dev->buf_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 718 | return -ENOMEM; |
| 719 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 720 | memset(buf->dev_private, 0, buf->dev_priv_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 722 | DRM_DEBUG("buffer %d @ %p\n", entry->buf_count, buf->address); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 723 | |
| 724 | offset += alignment; |
| 725 | entry->buf_count++; |
| 726 | byte_count += PAGE_SIZE << page_order; |
| 727 | } |
| 728 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 729 | DRM_DEBUG("byte_count: %d\n", byte_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 731 | temp_buflist = krealloc(dma->buflist, |
| 732 | (dma->buf_count + entry->buf_count) * |
| 733 | sizeof(*dma->buflist), GFP_KERNEL); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 734 | if (!temp_buflist) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 735 | /* Free the entry because it isn't valid */ |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 736 | drm_cleanup_buf_error(dev, entry); |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 737 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 738 | atomic_dec(&dev->buf_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 739 | return -ENOMEM; |
| 740 | } |
| 741 | dma->buflist = temp_buflist; |
| 742 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 743 | for (i = 0; i < entry->buf_count; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 744 | dma->buflist[i + dma->buf_count] = &entry->buflist[i]; |
| 745 | } |
| 746 | |
| 747 | dma->buf_count += entry->buf_count; |
Dave Airlie | d985c10 | 2006-01-02 21:32:48 +1100 | [diff] [blame] | 748 | dma->seg_count += entry->seg_count; |
| 749 | dma->page_count += byte_count >> PAGE_SHIFT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 750 | dma->byte_count += byte_count; |
| 751 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 752 | DRM_DEBUG("dma->buf_count : %d\n", dma->buf_count); |
| 753 | DRM_DEBUG("entry->buf_count : %d\n", entry->buf_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 754 | |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 755 | mutex_unlock(&dev->struct_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 756 | |
Dave Airlie | d59431b | 2005-07-10 15:00:06 +1000 | [diff] [blame] | 757 | request->count = entry->buf_count; |
| 758 | request->size = size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 759 | |
| 760 | dma->flags = _DRM_DMA_USE_AGP; |
| 761 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 762 | atomic_dec(&dev->buf_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | return 0; |
| 764 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 765 | EXPORT_SYMBOL(drm_addbufs_agp); |
| 766 | #endif /* __OS_HAS_AGP */ |
| 767 | |
Dave Airlie | 84b1fd1 | 2007-07-11 15:53:27 +1000 | [diff] [blame] | 768 | 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] | 769 | { |
Dave Airlie | cdd55a2 | 2007-07-11 16:32:08 +1000 | [diff] [blame] | 770 | struct drm_device_dma *dma = dev->dma; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 771 | int count; |
| 772 | int order; |
| 773 | int size; |
| 774 | int total; |
| 775 | int page_order; |
Dave Airlie | cdd55a2 | 2007-07-11 16:32:08 +1000 | [diff] [blame] | 776 | struct drm_buf_entry *entry; |
Dave Airlie | ddf19b9 | 2006-03-19 18:56:12 +1100 | [diff] [blame] | 777 | drm_dma_handle_t *dmah; |
Dave Airlie | 056219e | 2007-07-11 16:17:42 +1000 | [diff] [blame] | 778 | struct drm_buf *buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 779 | int alignment; |
| 780 | unsigned long offset; |
| 781 | int i; |
| 782 | int byte_count; |
| 783 | int page_count; |
| 784 | unsigned long *temp_pagelist; |
Dave Airlie | 056219e | 2007-07-11 16:17:42 +1000 | [diff] [blame] | 785 | struct drm_buf **temp_buflist; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 786 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 787 | if (!drm_core_check_feature(dev, DRIVER_PCI_DMA)) |
| 788 | return -EINVAL; |
Dave Airlie | d985c10 | 2006-01-02 21:32:48 +1100 | [diff] [blame] | 789 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 790 | if (!dma) |
| 791 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 792 | |
Dave Airlie | d985c10 | 2006-01-02 21:32:48 +1100 | [diff] [blame] | 793 | if (!capable(CAP_SYS_ADMIN)) |
| 794 | return -EPERM; |
| 795 | |
Dave Airlie | d59431b | 2005-07-10 15:00:06 +1000 | [diff] [blame] | 796 | count = request->count; |
| 797 | order = drm_order(request->size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 798 | size = 1 << order; |
| 799 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 800 | DRM_DEBUG("count=%d, size=%d (%d), order=%d, queue_count=%d\n", |
| 801 | request->count, request->size, size, order, dev->queue_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 803 | if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER) |
| 804 | return -EINVAL; |
| 805 | if (dev->queue_count) |
| 806 | return -EBUSY; /* Not while in use */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 807 | |
Dave Airlie | d59431b | 2005-07-10 15:00:06 +1000 | [diff] [blame] | 808 | alignment = (request->flags & _DRM_PAGE_ALIGN) |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 809 | ? PAGE_ALIGN(size) : size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 810 | page_order = order - PAGE_SHIFT > 0 ? order - PAGE_SHIFT : 0; |
| 811 | total = PAGE_SIZE << page_order; |
| 812 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 813 | spin_lock(&dev->count_lock); |
| 814 | if (dev->buf_use) { |
| 815 | spin_unlock(&dev->count_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 816 | return -EBUSY; |
| 817 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 818 | atomic_inc(&dev->buf_alloc); |
| 819 | spin_unlock(&dev->count_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 820 | |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 821 | mutex_lock(&dev->struct_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 822 | entry = &dma->bufs[order]; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 823 | if (entry->buf_count) { |
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 -ENOMEM; /* May only call once for each order */ |
| 827 | } |
| 828 | |
| 829 | if (count < 0 || count > 4096) { |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 830 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 831 | atomic_dec(&dev->buf_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 832 | return -EINVAL; |
| 833 | } |
| 834 | |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 835 | entry->buflist = kmalloc(count * sizeof(*entry->buflist), GFP_KERNEL); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 836 | if (!entry->buflist) { |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 837 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 838 | atomic_dec(&dev->buf_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 839 | return -ENOMEM; |
| 840 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 841 | memset(entry->buflist, 0, count * sizeof(*entry->buflist)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 842 | |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 843 | entry->seglist = kmalloc(count * sizeof(*entry->seglist), GFP_KERNEL); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 844 | if (!entry->seglist) { |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 845 | kfree(entry->buflist); |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 846 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 847 | atomic_dec(&dev->buf_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 848 | return -ENOMEM; |
| 849 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 850 | memset(entry->seglist, 0, count * sizeof(*entry->seglist)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 851 | |
| 852 | /* Keep the original pagelist until we know all the allocations |
| 853 | * have succeeded |
| 854 | */ |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 855 | temp_pagelist = kmalloc((dma->page_count + (count << page_order)) * |
| 856 | sizeof(*dma->pagelist), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 857 | if (!temp_pagelist) { |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 858 | kfree(entry->buflist); |
| 859 | kfree(entry->seglist); |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 860 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 861 | atomic_dec(&dev->buf_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 862 | return -ENOMEM; |
| 863 | } |
| 864 | memcpy(temp_pagelist, |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 865 | dma->pagelist, dma->page_count * sizeof(*dma->pagelist)); |
| 866 | DRM_DEBUG("pagelist: %d entries\n", |
| 867 | dma->page_count + (count << page_order)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 868 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 869 | entry->buf_size = size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 870 | entry->page_order = page_order; |
| 871 | byte_count = 0; |
| 872 | page_count = 0; |
| 873 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 874 | while (entry->buf_count < count) { |
Dave Airlie | bc5f452 | 2007-11-05 12:50:58 +1000 | [diff] [blame] | 875 | |
Zhenyu Wang | e6be8d9 | 2010-01-05 11:25:05 +0800 | [diff] [blame] | 876 | dmah = drm_pci_alloc(dev, PAGE_SIZE << page_order, 0x1000); |
Dave Airlie | bc5f452 | 2007-11-05 12:50:58 +1000 | [diff] [blame] | 877 | |
Dave Airlie | ddf19b9 | 2006-03-19 18:56:12 +1100 | [diff] [blame] | 878 | if (!dmah) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 879 | /* Set count correctly so we free the proper amount. */ |
| 880 | entry->buf_count = count; |
| 881 | entry->seg_count = count; |
| 882 | drm_cleanup_buf_error(dev, entry); |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 883 | kfree(temp_pagelist); |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 884 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 885 | atomic_dec(&dev->buf_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 886 | return -ENOMEM; |
| 887 | } |
Dave Airlie | ddf19b9 | 2006-03-19 18:56:12 +1100 | [diff] [blame] | 888 | entry->seglist[entry->seg_count++] = dmah; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 889 | for (i = 0; i < (1 << page_order); i++) { |
| 890 | DRM_DEBUG("page %d @ 0x%08lx\n", |
| 891 | dma->page_count + page_count, |
Dave Airlie | ddf19b9 | 2006-03-19 18:56:12 +1100 | [diff] [blame] | 892 | (unsigned long)dmah->vaddr + PAGE_SIZE * i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 893 | temp_pagelist[dma->page_count + page_count++] |
Dave Airlie | ddf19b9 | 2006-03-19 18:56:12 +1100 | [diff] [blame] | 894 | = (unsigned long)dmah->vaddr + PAGE_SIZE * i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 895 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 896 | for (offset = 0; |
| 897 | offset + size <= total && entry->buf_count < count; |
| 898 | offset += alignment, ++entry->buf_count) { |
| 899 | buf = &entry->buflist[entry->buf_count]; |
| 900 | buf->idx = dma->buf_count + entry->buf_count; |
| 901 | buf->total = alignment; |
| 902 | buf->order = order; |
| 903 | buf->used = 0; |
| 904 | buf->offset = (dma->byte_count + byte_count + offset); |
Dave Airlie | ddf19b9 | 2006-03-19 18:56:12 +1100 | [diff] [blame] | 905 | buf->address = (void *)(dmah->vaddr + offset); |
| 906 | buf->bus_address = dmah->busaddr + offset; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 907 | buf->next = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 908 | buf->waiting = 0; |
| 909 | buf->pending = 0; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 910 | init_waitqueue_head(&buf->dma_wait); |
Eric Anholt | 6c340ea | 2007-08-25 20:23:09 +1000 | [diff] [blame] | 911 | buf->file_priv = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 912 | |
| 913 | buf->dev_priv_size = dev->driver->dev_priv_size; |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 914 | buf->dev_private = kmalloc(buf->dev_priv_size, |
| 915 | GFP_KERNEL); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 916 | if (!buf->dev_private) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 917 | /* Set count correctly so we free the proper amount. */ |
| 918 | entry->buf_count = count; |
| 919 | entry->seg_count = count; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 920 | drm_cleanup_buf_error(dev, entry); |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 921 | kfree(temp_pagelist); |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 922 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 923 | atomic_dec(&dev->buf_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 924 | return -ENOMEM; |
| 925 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 926 | memset(buf->dev_private, 0, buf->dev_priv_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 927 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 928 | DRM_DEBUG("buffer %d @ %p\n", |
| 929 | entry->buf_count, buf->address); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 930 | } |
| 931 | byte_count += PAGE_SIZE << page_order; |
| 932 | } |
| 933 | |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 934 | temp_buflist = krealloc(dma->buflist, |
| 935 | (dma->buf_count + entry->buf_count) * |
| 936 | sizeof(*dma->buflist), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 937 | if (!temp_buflist) { |
| 938 | /* Free the entry because it isn't valid */ |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 939 | drm_cleanup_buf_error(dev, entry); |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 940 | kfree(temp_pagelist); |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 941 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 942 | atomic_dec(&dev->buf_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 943 | return -ENOMEM; |
| 944 | } |
| 945 | dma->buflist = temp_buflist; |
| 946 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 947 | for (i = 0; i < entry->buf_count; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 948 | dma->buflist[i + dma->buf_count] = &entry->buflist[i]; |
| 949 | } |
| 950 | |
| 951 | /* No allocations failed, so now we can replace the orginal pagelist |
| 952 | * with the new one. |
| 953 | */ |
| 954 | if (dma->page_count) { |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 955 | kfree(dma->pagelist); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 956 | } |
| 957 | dma->pagelist = temp_pagelist; |
| 958 | |
| 959 | dma->buf_count += entry->buf_count; |
| 960 | dma->seg_count += entry->seg_count; |
| 961 | dma->page_count += entry->seg_count << page_order; |
| 962 | dma->byte_count += PAGE_SIZE * (entry->seg_count << page_order); |
| 963 | |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 964 | mutex_unlock(&dev->struct_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 965 | |
Dave Airlie | d59431b | 2005-07-10 15:00:06 +1000 | [diff] [blame] | 966 | request->count = entry->buf_count; |
| 967 | request->size = size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 968 | |
George Sapountzis | 3417f33 | 2006-10-24 12:03:04 -0700 | [diff] [blame] | 969 | if (request->flags & _DRM_PCI_BUFFER_RO) |
| 970 | dma->flags = _DRM_DMA_USE_PCI_RO; |
| 971 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 972 | atomic_dec(&dev->buf_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 973 | return 0; |
| 974 | |
| 975 | } |
Dave Airlie | d84f76d | 2005-07-10 17:04:22 +1000 | [diff] [blame] | 976 | EXPORT_SYMBOL(drm_addbufs_pci); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 977 | |
Dave Airlie | 84b1fd1 | 2007-07-11 15:53:27 +1000 | [diff] [blame] | 978 | 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] | 979 | { |
Dave Airlie | cdd55a2 | 2007-07-11 16:32:08 +1000 | [diff] [blame] | 980 | struct drm_device_dma *dma = dev->dma; |
| 981 | struct drm_buf_entry *entry; |
Dave Airlie | 056219e | 2007-07-11 16:17:42 +1000 | [diff] [blame] | 982 | struct drm_buf *buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 983 | unsigned long offset; |
| 984 | unsigned long agp_offset; |
| 985 | int count; |
| 986 | int order; |
| 987 | int size; |
| 988 | int alignment; |
| 989 | int page_order; |
| 990 | int total; |
| 991 | int byte_count; |
| 992 | int i; |
Dave Airlie | 056219e | 2007-07-11 16:17:42 +1000 | [diff] [blame] | 993 | struct drm_buf **temp_buflist; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 994 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 995 | if (!drm_core_check_feature(dev, DRIVER_SG)) |
| 996 | return -EINVAL; |
| 997 | |
| 998 | if (!dma) |
| 999 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1000 | |
Dave Airlie | d985c10 | 2006-01-02 21:32:48 +1100 | [diff] [blame] | 1001 | if (!capable(CAP_SYS_ADMIN)) |
| 1002 | return -EPERM; |
| 1003 | |
Dave Airlie | d59431b | 2005-07-10 15:00:06 +1000 | [diff] [blame] | 1004 | count = request->count; |
| 1005 | order = drm_order(request->size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1006 | size = 1 << order; |
| 1007 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1008 | alignment = (request->flags & _DRM_PAGE_ALIGN) |
| 1009 | ? PAGE_ALIGN(size) : size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1010 | page_order = order - PAGE_SHIFT > 0 ? order - PAGE_SHIFT : 0; |
| 1011 | total = PAGE_SIZE << page_order; |
| 1012 | |
| 1013 | byte_count = 0; |
Dave Airlie | d59431b | 2005-07-10 15:00:06 +1000 | [diff] [blame] | 1014 | agp_offset = request->agp_start; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1015 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1016 | DRM_DEBUG("count: %d\n", count); |
| 1017 | DRM_DEBUG("order: %d\n", order); |
| 1018 | DRM_DEBUG("size: %d\n", size); |
| 1019 | DRM_DEBUG("agp_offset: %lu\n", agp_offset); |
| 1020 | DRM_DEBUG("alignment: %d\n", alignment); |
| 1021 | DRM_DEBUG("page_order: %d\n", page_order); |
| 1022 | DRM_DEBUG("total: %d\n", total); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1023 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1024 | if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER) |
| 1025 | return -EINVAL; |
| 1026 | if (dev->queue_count) |
| 1027 | return -EBUSY; /* Not while in use */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1028 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1029 | spin_lock(&dev->count_lock); |
| 1030 | if (dev->buf_use) { |
| 1031 | spin_unlock(&dev->count_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1032 | return -EBUSY; |
| 1033 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1034 | atomic_inc(&dev->buf_alloc); |
| 1035 | spin_unlock(&dev->count_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1036 | |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 1037 | mutex_lock(&dev->struct_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1038 | entry = &dma->bufs[order]; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1039 | if (entry->buf_count) { |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 1040 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1041 | atomic_dec(&dev->buf_alloc); |
| 1042 | return -ENOMEM; /* May only call once for each order */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1043 | } |
| 1044 | |
| 1045 | if (count < 0 || count > 4096) { |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 1046 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1047 | atomic_dec(&dev->buf_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1048 | return -EINVAL; |
| 1049 | } |
| 1050 | |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 1051 | entry->buflist = kmalloc(count * sizeof(*entry->buflist), |
| 1052 | GFP_KERNEL); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1053 | if (!entry->buflist) { |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 1054 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1055 | atomic_dec(&dev->buf_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1056 | return -ENOMEM; |
| 1057 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1058 | memset(entry->buflist, 0, count * sizeof(*entry->buflist)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1059 | |
| 1060 | entry->buf_size = size; |
| 1061 | entry->page_order = page_order; |
| 1062 | |
| 1063 | offset = 0; |
| 1064 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1065 | while (entry->buf_count < count) { |
| 1066 | buf = &entry->buflist[entry->buf_count]; |
| 1067 | buf->idx = dma->buf_count + entry->buf_count; |
| 1068 | buf->total = alignment; |
| 1069 | buf->order = order; |
| 1070 | buf->used = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1071 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1072 | buf->offset = (dma->byte_count + offset); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1073 | buf->bus_address = agp_offset + offset; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1074 | buf->address = (void *)(agp_offset + offset |
Dave Airlie | d1f2b55 | 2005-08-05 22:11:22 +1000 | [diff] [blame] | 1075 | + (unsigned long)dev->sg->virtual); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1076 | buf->next = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1077 | buf->waiting = 0; |
| 1078 | buf->pending = 0; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1079 | init_waitqueue_head(&buf->dma_wait); |
Eric Anholt | 6c340ea | 2007-08-25 20:23:09 +1000 | [diff] [blame] | 1080 | buf->file_priv = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1081 | |
| 1082 | buf->dev_priv_size = dev->driver->dev_priv_size; |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 1083 | buf->dev_private = kmalloc(buf->dev_priv_size, GFP_KERNEL); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1084 | if (!buf->dev_private) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1085 | /* Set count correctly so we free the proper amount. */ |
| 1086 | entry->buf_count = count; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1087 | drm_cleanup_buf_error(dev, entry); |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 1088 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1089 | atomic_dec(&dev->buf_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1090 | return -ENOMEM; |
| 1091 | } |
| 1092 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1093 | memset(buf->dev_private, 0, buf->dev_priv_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1094 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1095 | DRM_DEBUG("buffer %d @ %p\n", entry->buf_count, buf->address); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1096 | |
| 1097 | offset += alignment; |
| 1098 | entry->buf_count++; |
| 1099 | byte_count += PAGE_SIZE << page_order; |
| 1100 | } |
| 1101 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1102 | DRM_DEBUG("byte_count: %d\n", byte_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1103 | |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 1104 | temp_buflist = krealloc(dma->buflist, |
| 1105 | (dma->buf_count + entry->buf_count) * |
| 1106 | sizeof(*dma->buflist), GFP_KERNEL); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1107 | if (!temp_buflist) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1108 | /* Free the entry because it isn't valid */ |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1109 | drm_cleanup_buf_error(dev, entry); |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 1110 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1111 | atomic_dec(&dev->buf_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1112 | return -ENOMEM; |
| 1113 | } |
| 1114 | dma->buflist = temp_buflist; |
| 1115 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1116 | for (i = 0; i < entry->buf_count; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1117 | dma->buflist[i + dma->buf_count] = &entry->buflist[i]; |
| 1118 | } |
| 1119 | |
| 1120 | dma->buf_count += entry->buf_count; |
Dave Airlie | d985c10 | 2006-01-02 21:32:48 +1100 | [diff] [blame] | 1121 | dma->seg_count += entry->seg_count; |
| 1122 | dma->page_count += byte_count >> PAGE_SHIFT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1123 | dma->byte_count += byte_count; |
| 1124 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1125 | DRM_DEBUG("dma->buf_count : %d\n", dma->buf_count); |
| 1126 | DRM_DEBUG("entry->buf_count : %d\n", entry->buf_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1127 | |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 1128 | mutex_unlock(&dev->struct_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1129 | |
Dave Airlie | d59431b | 2005-07-10 15:00:06 +1000 | [diff] [blame] | 1130 | request->count = entry->buf_count; |
| 1131 | request->size = size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1132 | |
| 1133 | dma->flags = _DRM_DMA_USE_SG; |
| 1134 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1135 | atomic_dec(&dev->buf_alloc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1136 | return 0; |
| 1137 | } |
| 1138 | |
Dave Airlie | 84b1fd1 | 2007-07-11 15:53:27 +1000 | [diff] [blame] | 1139 | 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] | 1140 | { |
Dave Airlie | cdd55a2 | 2007-07-11 16:32:08 +1000 | [diff] [blame] | 1141 | struct drm_device_dma *dma = dev->dma; |
| 1142 | struct drm_buf_entry *entry; |
Dave Airlie | 056219e | 2007-07-11 16:17:42 +1000 | [diff] [blame] | 1143 | struct drm_buf *buf; |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1144 | unsigned long offset; |
| 1145 | unsigned long agp_offset; |
| 1146 | int count; |
| 1147 | int order; |
| 1148 | int size; |
| 1149 | int alignment; |
| 1150 | int page_order; |
| 1151 | int total; |
| 1152 | int byte_count; |
| 1153 | int i; |
Dave Airlie | 056219e | 2007-07-11 16:17:42 +1000 | [diff] [blame] | 1154 | struct drm_buf **temp_buflist; |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1155 | |
| 1156 | if (!drm_core_check_feature(dev, DRIVER_FB_DMA)) |
| 1157 | return -EINVAL; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1158 | |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1159 | if (!dma) |
| 1160 | return -EINVAL; |
| 1161 | |
Dave Airlie | d985c10 | 2006-01-02 21:32:48 +1100 | [diff] [blame] | 1162 | if (!capable(CAP_SYS_ADMIN)) |
| 1163 | return -EPERM; |
| 1164 | |
Dave Airlie | d59431b | 2005-07-10 15:00:06 +1000 | [diff] [blame] | 1165 | count = request->count; |
| 1166 | order = drm_order(request->size); |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1167 | size = 1 << order; |
| 1168 | |
Dave Airlie | d59431b | 2005-07-10 15:00:06 +1000 | [diff] [blame] | 1169 | alignment = (request->flags & _DRM_PAGE_ALIGN) |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1170 | ? PAGE_ALIGN(size) : size; |
| 1171 | page_order = order - PAGE_SHIFT > 0 ? order - PAGE_SHIFT : 0; |
| 1172 | total = PAGE_SIZE << page_order; |
| 1173 | |
| 1174 | byte_count = 0; |
Dave Airlie | d59431b | 2005-07-10 15:00:06 +1000 | [diff] [blame] | 1175 | agp_offset = request->agp_start; |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1176 | |
| 1177 | DRM_DEBUG("count: %d\n", count); |
| 1178 | DRM_DEBUG("order: %d\n", order); |
| 1179 | DRM_DEBUG("size: %d\n", size); |
| 1180 | DRM_DEBUG("agp_offset: %lu\n", agp_offset); |
| 1181 | DRM_DEBUG("alignment: %d\n", alignment); |
| 1182 | DRM_DEBUG("page_order: %d\n", page_order); |
| 1183 | DRM_DEBUG("total: %d\n", total); |
| 1184 | |
| 1185 | if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER) |
| 1186 | return -EINVAL; |
| 1187 | if (dev->queue_count) |
| 1188 | return -EBUSY; /* Not while in use */ |
| 1189 | |
| 1190 | spin_lock(&dev->count_lock); |
| 1191 | if (dev->buf_use) { |
| 1192 | spin_unlock(&dev->count_lock); |
| 1193 | return -EBUSY; |
| 1194 | } |
| 1195 | atomic_inc(&dev->buf_alloc); |
| 1196 | spin_unlock(&dev->count_lock); |
| 1197 | |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 1198 | mutex_lock(&dev->struct_mutex); |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1199 | entry = &dma->bufs[order]; |
| 1200 | if (entry->buf_count) { |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 1201 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1202 | atomic_dec(&dev->buf_alloc); |
| 1203 | return -ENOMEM; /* May only call once for each order */ |
| 1204 | } |
| 1205 | |
| 1206 | if (count < 0 || count > 4096) { |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 1207 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1208 | atomic_dec(&dev->buf_alloc); |
| 1209 | return -EINVAL; |
| 1210 | } |
| 1211 | |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 1212 | entry->buflist = kmalloc(count * sizeof(*entry->buflist), |
| 1213 | GFP_KERNEL); |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1214 | if (!entry->buflist) { |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 1215 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1216 | atomic_dec(&dev->buf_alloc); |
| 1217 | return -ENOMEM; |
| 1218 | } |
| 1219 | memset(entry->buflist, 0, count * sizeof(*entry->buflist)); |
| 1220 | |
| 1221 | entry->buf_size = size; |
| 1222 | entry->page_order = page_order; |
| 1223 | |
| 1224 | offset = 0; |
| 1225 | |
| 1226 | while (entry->buf_count < count) { |
| 1227 | buf = &entry->buflist[entry->buf_count]; |
| 1228 | buf->idx = dma->buf_count + entry->buf_count; |
| 1229 | buf->total = alignment; |
| 1230 | buf->order = order; |
| 1231 | buf->used = 0; |
| 1232 | |
| 1233 | buf->offset = (dma->byte_count + offset); |
| 1234 | buf->bus_address = agp_offset + offset; |
| 1235 | buf->address = (void *)(agp_offset + offset); |
| 1236 | buf->next = NULL; |
| 1237 | buf->waiting = 0; |
| 1238 | buf->pending = 0; |
| 1239 | init_waitqueue_head(&buf->dma_wait); |
Eric Anholt | 6c340ea | 2007-08-25 20:23:09 +1000 | [diff] [blame] | 1240 | buf->file_priv = NULL; |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1241 | |
| 1242 | buf->dev_priv_size = dev->driver->dev_priv_size; |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 1243 | buf->dev_private = kmalloc(buf->dev_priv_size, GFP_KERNEL); |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1244 | if (!buf->dev_private) { |
| 1245 | /* Set count correctly so we free the proper amount. */ |
| 1246 | entry->buf_count = count; |
| 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 | memset(buf->dev_private, 0, buf->dev_priv_size); |
| 1253 | |
| 1254 | DRM_DEBUG("buffer %d @ %p\n", entry->buf_count, buf->address); |
| 1255 | |
| 1256 | offset += alignment; |
| 1257 | entry->buf_count++; |
| 1258 | byte_count += PAGE_SIZE << page_order; |
| 1259 | } |
| 1260 | |
| 1261 | DRM_DEBUG("byte_count: %d\n", byte_count); |
| 1262 | |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 1263 | temp_buflist = krealloc(dma->buflist, |
| 1264 | (dma->buf_count + entry->buf_count) * |
| 1265 | sizeof(*dma->buflist), GFP_KERNEL); |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1266 | if (!temp_buflist) { |
| 1267 | /* Free the entry because it isn't valid */ |
| 1268 | drm_cleanup_buf_error(dev, entry); |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 1269 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1270 | atomic_dec(&dev->buf_alloc); |
| 1271 | return -ENOMEM; |
| 1272 | } |
| 1273 | dma->buflist = temp_buflist; |
| 1274 | |
| 1275 | for (i = 0; i < entry->buf_count; i++) { |
| 1276 | dma->buflist[i + dma->buf_count] = &entry->buflist[i]; |
| 1277 | } |
| 1278 | |
| 1279 | dma->buf_count += entry->buf_count; |
Dave Airlie | d985c10 | 2006-01-02 21:32:48 +1100 | [diff] [blame] | 1280 | dma->seg_count += entry->seg_count; |
| 1281 | dma->page_count += byte_count >> PAGE_SHIFT; |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1282 | dma->byte_count += byte_count; |
| 1283 | |
| 1284 | DRM_DEBUG("dma->buf_count : %d\n", dma->buf_count); |
| 1285 | DRM_DEBUG("entry->buf_count : %d\n", entry->buf_count); |
| 1286 | |
Dave Airlie | 30e2fb1 | 2006-02-02 19:37:46 +1100 | [diff] [blame] | 1287 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1288 | |
Dave Airlie | d59431b | 2005-07-10 15:00:06 +1000 | [diff] [blame] | 1289 | request->count = entry->buf_count; |
| 1290 | request->size = size; |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1291 | |
| 1292 | dma->flags = _DRM_DMA_USE_FB; |
| 1293 | |
| 1294 | atomic_dec(&dev->buf_alloc); |
| 1295 | return 0; |
| 1296 | } |
Dave Airlie | d985c10 | 2006-01-02 21:32:48 +1100 | [diff] [blame] | 1297 | |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1298 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1299 | /** |
| 1300 | * Add buffers for DMA transfers (ioctl). |
| 1301 | * |
| 1302 | * \param inode device inode. |
Eric Anholt | 6c340ea | 2007-08-25 20:23:09 +1000 | [diff] [blame] | 1303 | * \param file_priv DRM file private. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1304 | * \param cmd command. |
Dave Airlie | c60ce62 | 2007-07-11 15:27:12 +1000 | [diff] [blame] | 1305 | * \param arg pointer to a struct drm_buf_desc request. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1306 | * \return zero on success or a negative number on failure. |
| 1307 | * |
| 1308 | * According with the memory type specified in drm_buf_desc::flags and the |
| 1309 | * build options, it dispatches the call either to addbufs_agp(), |
| 1310 | * addbufs_sg() or addbufs_pci() for AGP, scatter-gather or consistent |
| 1311 | * PCI memory respectively. |
| 1312 | */ |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1313 | int drm_addbufs(struct drm_device *dev, void *data, |
| 1314 | struct drm_file *file_priv) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1315 | { |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1316 | struct drm_buf_desc *request = data; |
Dave Airlie | d59431b | 2005-07-10 15:00:06 +1000 | [diff] [blame] | 1317 | int ret; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1318 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1319 | if (!drm_core_check_feature(dev, DRIVER_HAVE_DMA)) |
| 1320 | return -EINVAL; |
| 1321 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1322 | #if __OS_HAS_AGP |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1323 | if (request->flags & _DRM_AGP_BUFFER) |
| 1324 | ret = drm_addbufs_agp(dev, request); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1325 | else |
| 1326 | #endif |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1327 | if (request->flags & _DRM_SG_BUFFER) |
| 1328 | ret = drm_addbufs_sg(dev, request); |
| 1329 | else if (request->flags & _DRM_FB_BUFFER) |
| 1330 | ret = drm_addbufs_fb(dev, request); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1331 | else |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1332 | ret = drm_addbufs_pci(dev, request); |
Dave Airlie | d59431b | 2005-07-10 15:00:06 +1000 | [diff] [blame] | 1333 | |
Dave Airlie | d59431b | 2005-07-10 15:00:06 +1000 | [diff] [blame] | 1334 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1335 | } |
| 1336 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1337 | /** |
| 1338 | * Get information about the buffer mappings. |
| 1339 | * |
| 1340 | * This was originally mean for debugging purposes, or by a sophisticated |
| 1341 | * client library to determine how best to use the available buffers (e.g., |
| 1342 | * large buffers can be used for image transfer). |
| 1343 | * |
| 1344 | * \param inode device inode. |
Eric Anholt | 6c340ea | 2007-08-25 20:23:09 +1000 | [diff] [blame] | 1345 | * \param file_priv DRM file private. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1346 | * \param cmd command. |
| 1347 | * \param arg pointer to a drm_buf_info structure. |
| 1348 | * \return zero on success or a negative number on failure. |
| 1349 | * |
| 1350 | * Increments drm_device::buf_use while holding the drm_device::count_lock |
| 1351 | * lock, preventing of allocating more buffers after this call. Information |
| 1352 | * about each requested buffer is then copied into user space. |
| 1353 | */ |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1354 | int drm_infobufs(struct drm_device *dev, void *data, |
| 1355 | struct drm_file *file_priv) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1356 | { |
Dave Airlie | cdd55a2 | 2007-07-11 16:32:08 +1000 | [diff] [blame] | 1357 | struct drm_device_dma *dma = dev->dma; |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1358 | struct drm_buf_info *request = data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1359 | int i; |
| 1360 | int count; |
| 1361 | |
| 1362 | if (!drm_core_check_feature(dev, DRIVER_HAVE_DMA)) |
| 1363 | return -EINVAL; |
| 1364 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1365 | if (!dma) |
| 1366 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1367 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1368 | spin_lock(&dev->count_lock); |
| 1369 | if (atomic_read(&dev->buf_alloc)) { |
| 1370 | spin_unlock(&dev->count_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1371 | return -EBUSY; |
| 1372 | } |
| 1373 | ++dev->buf_use; /* Can't allocate more after this call */ |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1374 | spin_unlock(&dev->count_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1375 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1376 | for (i = 0, count = 0; i < DRM_MAX_ORDER + 1; i++) { |
| 1377 | if (dma->bufs[i].buf_count) |
| 1378 | ++count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1379 | } |
| 1380 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1381 | DRM_DEBUG("count = %d\n", count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1382 | |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1383 | if (request->count >= count) { |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1384 | for (i = 0, count = 0; i < DRM_MAX_ORDER + 1; i++) { |
| 1385 | if (dma->bufs[i].buf_count) { |
Dave Airlie | c60ce62 | 2007-07-11 15:27:12 +1000 | [diff] [blame] | 1386 | struct drm_buf_desc __user *to = |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1387 | &request->list[count]; |
Dave Airlie | cdd55a2 | 2007-07-11 16:32:08 +1000 | [diff] [blame] | 1388 | struct drm_buf_entry *from = &dma->bufs[i]; |
| 1389 | struct drm_freelist *list = &dma->bufs[i].freelist; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1390 | if (copy_to_user(&to->count, |
| 1391 | &from->buf_count, |
| 1392 | sizeof(from->buf_count)) || |
| 1393 | copy_to_user(&to->size, |
| 1394 | &from->buf_size, |
| 1395 | sizeof(from->buf_size)) || |
| 1396 | copy_to_user(&to->low_mark, |
| 1397 | &list->low_mark, |
| 1398 | sizeof(list->low_mark)) || |
| 1399 | copy_to_user(&to->high_mark, |
| 1400 | &list->high_mark, |
| 1401 | sizeof(list->high_mark))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1402 | return -EFAULT; |
| 1403 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1404 | DRM_DEBUG("%d %d %d %d %d\n", |
| 1405 | i, |
| 1406 | dma->bufs[i].buf_count, |
| 1407 | dma->bufs[i].buf_size, |
| 1408 | dma->bufs[i].freelist.low_mark, |
| 1409 | dma->bufs[i].freelist.high_mark); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1410 | ++count; |
| 1411 | } |
| 1412 | } |
| 1413 | } |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1414 | request->count = count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1415 | |
| 1416 | return 0; |
| 1417 | } |
| 1418 | |
| 1419 | /** |
| 1420 | * Specifies a low and high water mark for buffer allocation |
| 1421 | * |
| 1422 | * \param inode device inode. |
Eric Anholt | 6c340ea | 2007-08-25 20:23:09 +1000 | [diff] [blame] | 1423 | * \param file_priv DRM file private. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1424 | * \param cmd command. |
| 1425 | * \param arg a pointer to a drm_buf_desc structure. |
| 1426 | * \return zero on success or a negative number on failure. |
| 1427 | * |
| 1428 | * Verifies that the size order is bounded between the admissible orders and |
| 1429 | * updates the respective drm_device_dma::bufs entry low and high water mark. |
| 1430 | * |
| 1431 | * \note This ioctl is deprecated and mostly never used. |
| 1432 | */ |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1433 | int drm_markbufs(struct drm_device *dev, void *data, |
| 1434 | struct drm_file *file_priv) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1435 | { |
Dave Airlie | cdd55a2 | 2007-07-11 16:32:08 +1000 | [diff] [blame] | 1436 | struct drm_device_dma *dma = dev->dma; |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1437 | struct drm_buf_desc *request = data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1438 | int order; |
Dave Airlie | cdd55a2 | 2007-07-11 16:32:08 +1000 | [diff] [blame] | 1439 | struct drm_buf_entry *entry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1440 | |
| 1441 | if (!drm_core_check_feature(dev, DRIVER_HAVE_DMA)) |
| 1442 | return -EINVAL; |
| 1443 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1444 | if (!dma) |
| 1445 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1446 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1447 | DRM_DEBUG("%d, %d, %d\n", |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1448 | request->size, request->low_mark, request->high_mark); |
| 1449 | order = drm_order(request->size); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1450 | if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER) |
| 1451 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1452 | entry = &dma->bufs[order]; |
| 1453 | |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1454 | if (request->low_mark < 0 || request->low_mark > entry->buf_count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1455 | return -EINVAL; |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1456 | if (request->high_mark < 0 || request->high_mark > entry->buf_count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1457 | return -EINVAL; |
| 1458 | |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1459 | entry->freelist.low_mark = request->low_mark; |
| 1460 | entry->freelist.high_mark = request->high_mark; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1461 | |
| 1462 | return 0; |
| 1463 | } |
| 1464 | |
| 1465 | /** |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1466 | * Unreserve the buffers in list, previously reserved using drmDMA. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1467 | * |
| 1468 | * \param inode device inode. |
Eric Anholt | 6c340ea | 2007-08-25 20:23:09 +1000 | [diff] [blame] | 1469 | * \param file_priv DRM file private. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1470 | * \param cmd command. |
| 1471 | * \param arg pointer to a drm_buf_free structure. |
| 1472 | * \return zero on success or a negative number on failure. |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1473 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1474 | * Calls free_buffer() for each used buffer. |
| 1475 | * This function is primarily used for debugging. |
| 1476 | */ |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1477 | int drm_freebufs(struct drm_device *dev, void *data, |
| 1478 | struct drm_file *file_priv) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1479 | { |
Dave Airlie | cdd55a2 | 2007-07-11 16:32:08 +1000 | [diff] [blame] | 1480 | struct drm_device_dma *dma = dev->dma; |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1481 | struct drm_buf_free *request = data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1482 | int i; |
| 1483 | int idx; |
Dave Airlie | 056219e | 2007-07-11 16:17:42 +1000 | [diff] [blame] | 1484 | struct drm_buf *buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1485 | |
| 1486 | if (!drm_core_check_feature(dev, DRIVER_HAVE_DMA)) |
| 1487 | return -EINVAL; |
| 1488 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1489 | if (!dma) |
| 1490 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1491 | |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1492 | DRM_DEBUG("%d\n", request->count); |
| 1493 | for (i = 0; i < request->count; i++) { |
| 1494 | if (copy_from_user(&idx, &request->list[i], sizeof(idx))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1495 | return -EFAULT; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1496 | if (idx < 0 || idx >= dma->buf_count) { |
| 1497 | DRM_ERROR("Index %d (of %d max)\n", |
| 1498 | idx, dma->buf_count - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1499 | return -EINVAL; |
| 1500 | } |
| 1501 | buf = dma->buflist[idx]; |
Eric Anholt | 6c340ea | 2007-08-25 20:23:09 +1000 | [diff] [blame] | 1502 | if (buf->file_priv != file_priv) { |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1503 | DRM_ERROR("Process %d freeing buffer not owned\n", |
Pavel Emelyanov | ba25f9d | 2007-10-18 23:40:40 -0700 | [diff] [blame] | 1504 | task_pid_nr(current)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1505 | return -EINVAL; |
| 1506 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1507 | drm_free_buffer(dev, buf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1508 | } |
| 1509 | |
| 1510 | return 0; |
| 1511 | } |
| 1512 | |
| 1513 | /** |
| 1514 | * Maps all of the DMA buffers into client-virtual space (ioctl). |
| 1515 | * |
| 1516 | * \param inode device inode. |
Eric Anholt | 6c340ea | 2007-08-25 20:23:09 +1000 | [diff] [blame] | 1517 | * \param file_priv DRM file private. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1518 | * \param cmd command. |
| 1519 | * \param arg pointer to a drm_buf_map structure. |
| 1520 | * \return zero on success or a negative number on failure. |
| 1521 | * |
George Sapountzis | 3417f33 | 2006-10-24 12:03:04 -0700 | [diff] [blame] | 1522 | * Maps the AGP, SG or PCI buffer region with do_mmap(), and copies information |
| 1523 | * about each buffer into user space. For PCI buffers, it calls do_mmap() with |
| 1524 | * offset equal to 0, which drm_mmap() interpretes as PCI buffers and calls |
| 1525 | * drm_mmap_dma(). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1526 | */ |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1527 | int drm_mapbufs(struct drm_device *dev, void *data, |
| 1528 | struct drm_file *file_priv) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1529 | { |
Dave Airlie | cdd55a2 | 2007-07-11 16:32:08 +1000 | [diff] [blame] | 1530 | struct drm_device_dma *dma = dev->dma; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1531 | int retcode = 0; |
| 1532 | const int zero = 0; |
| 1533 | unsigned long virtual; |
| 1534 | unsigned long address; |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1535 | struct drm_buf_map *request = data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1536 | int i; |
| 1537 | |
| 1538 | if (!drm_core_check_feature(dev, DRIVER_HAVE_DMA)) |
| 1539 | return -EINVAL; |
| 1540 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1541 | if (!dma) |
| 1542 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1543 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1544 | spin_lock(&dev->count_lock); |
| 1545 | if (atomic_read(&dev->buf_alloc)) { |
| 1546 | spin_unlock(&dev->count_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1547 | return -EBUSY; |
| 1548 | } |
| 1549 | dev->buf_use++; /* Can't allocate more after this call */ |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1550 | spin_unlock(&dev->count_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1551 | |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1552 | if (request->count >= dma->buf_count) { |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1553 | if ((drm_core_has_AGP(dev) && (dma->flags & _DRM_DMA_USE_AGP)) |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1554 | || (drm_core_check_feature(dev, DRIVER_SG) |
Dave Airlie | b84397d6 | 2005-07-10 14:46:12 +1000 | [diff] [blame] | 1555 | && (dma->flags & _DRM_DMA_USE_SG)) |
| 1556 | || (drm_core_check_feature(dev, DRIVER_FB_DMA) |
| 1557 | && (dma->flags & _DRM_DMA_USE_FB))) { |
Benjamin Herrenschmidt | f77d390 | 2009-02-02 16:55:46 +1100 | [diff] [blame] | 1558 | struct drm_local_map *map = dev->agp_buffer_map; |
Dave Airlie | d1f2b55 | 2005-08-05 22:11:22 +1000 | [diff] [blame] | 1559 | unsigned long token = dev->agp_buffer_token; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1560 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1561 | if (!map) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1562 | retcode = -EINVAL; |
| 1563 | goto done; |
| 1564 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1565 | down_write(¤t->mm->mmap_sem); |
Eric Anholt | 6c340ea | 2007-08-25 20:23:09 +1000 | [diff] [blame] | 1566 | virtual = do_mmap(file_priv->filp, 0, map->size, |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1567 | PROT_READ | PROT_WRITE, |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1568 | MAP_SHARED, |
| 1569 | token); |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1570 | up_write(¤t->mm->mmap_sem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1571 | } else { |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1572 | down_write(¤t->mm->mmap_sem); |
Eric Anholt | 6c340ea | 2007-08-25 20:23:09 +1000 | [diff] [blame] | 1573 | virtual = do_mmap(file_priv->filp, 0, dma->byte_count, |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1574 | PROT_READ | PROT_WRITE, |
| 1575 | MAP_SHARED, 0); |
| 1576 | up_write(¤t->mm->mmap_sem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1577 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1578 | if (virtual > -1024UL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1579 | /* Real error */ |
| 1580 | retcode = (signed long)virtual; |
| 1581 | goto done; |
| 1582 | } |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1583 | request->virtual = (void __user *)virtual; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1584 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1585 | for (i = 0; i < dma->buf_count; i++) { |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1586 | if (copy_to_user(&request->list[i].idx, |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1587 | &dma->buflist[i]->idx, |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1588 | sizeof(request->list[0].idx))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1589 | retcode = -EFAULT; |
| 1590 | goto done; |
| 1591 | } |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1592 | if (copy_to_user(&request->list[i].total, |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1593 | &dma->buflist[i]->total, |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1594 | sizeof(request->list[0].total))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1595 | retcode = -EFAULT; |
| 1596 | goto done; |
| 1597 | } |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1598 | if (copy_to_user(&request->list[i].used, |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1599 | &zero, sizeof(zero))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1600 | retcode = -EFAULT; |
| 1601 | goto done; |
| 1602 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1603 | address = virtual + dma->buflist[i]->offset; /* *** */ |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1604 | if (copy_to_user(&request->list[i].address, |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1605 | &address, sizeof(address))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1606 | retcode = -EFAULT; |
| 1607 | goto done; |
| 1608 | } |
| 1609 | } |
| 1610 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1611 | done: |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 1612 | request->count = dma->buf_count; |
| 1613 | DRM_DEBUG("%d buffers, retcode = %d\n", request->count, retcode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1614 | |
| 1615 | return retcode; |
| 1616 | } |
| 1617 | |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 1618 | /** |
| 1619 | * Compute size order. Returns the exponent of the smaller power of two which |
| 1620 | * is greater or equal to given number. |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1621 | * |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 1622 | * \param size size. |
| 1623 | * \return order. |
| 1624 | * |
| 1625 | * \todo Can be made faster. |
| 1626 | */ |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1627 | int drm_order(unsigned long size) |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 1628 | { |
| 1629 | int order; |
| 1630 | unsigned long tmp; |
| 1631 | |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 1632 | for (order = 0, tmp = size >> 1; tmp; tmp >>= 1, order++) ; |
Dave Airlie | 836cf04 | 2005-07-10 19:27:04 +1000 | [diff] [blame] | 1633 | |
| 1634 | if (size & (size - 1)) |
| 1635 | ++order; |
| 1636 | |
| 1637 | return order; |
| 1638 | } |
| 1639 | EXPORT_SYMBOL(drm_order); |