Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2013 Red Hat |
| 3 | * Author: Rob Clark <robdclark@gmail.com> |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 as published by |
| 7 | * the Free Software Foundation. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 12 | * more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License along with |
| 15 | * this program. If not, see <http://www.gnu.org/licenses/>. |
| 16 | */ |
| 17 | |
Rob Clark | f0a42bb | 2016-06-16 16:08:19 -0400 | [diff] [blame] | 18 | #include <linux/sync_file.h> |
| 19 | |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 20 | #include "msm_drv.h" |
| 21 | #include "msm_gpu.h" |
| 22 | #include "msm_gem.h" |
| 23 | |
| 24 | /* |
| 25 | * Cmdstream submission: |
| 26 | */ |
| 27 | |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 28 | /* make sure these don't conflict w/ MSM_SUBMIT_BO_x */ |
Rob Clark | 340faef | 2016-03-14 13:56:37 -0400 | [diff] [blame] | 29 | #define BO_VALID 0x8000 /* is current addr in cmdstream correct/valid? */ |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 30 | #define BO_LOCKED 0x4000 |
| 31 | #define BO_PINNED 0x2000 |
| 32 | |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 33 | static struct msm_gem_submit *submit_create(struct drm_device *dev, |
Kasin Li | 9ba3f55 | 2017-02-22 18:25:36 +0800 | [diff] [blame] | 34 | struct msm_gpu *gpu, uint32_t nr_bos, uint32_t nr_cmds) |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 35 | { |
| 36 | struct msm_gem_submit *submit; |
Kasin Li | 9ba3f55 | 2017-02-22 18:25:36 +0800 | [diff] [blame] | 37 | uint64_t sz = sizeof(*submit) + (nr_bos * sizeof(submit->bos[0])) + |
| 38 | (nr_cmds * sizeof(submit->cmd[0])); |
| 39 | |
| 40 | if (sz > SIZE_MAX) |
| 41 | return NULL; |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 42 | |
| 43 | submit = kmalloc(sz, GFP_TEMPORARY | __GFP_NOWARN | __GFP_NORETRY); |
Rob Clark | 6860b56 | 2016-05-03 09:49:40 -0400 | [diff] [blame] | 44 | if (!submit) |
| 45 | return NULL; |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 46 | |
Rob Clark | 6860b56 | 2016-05-03 09:49:40 -0400 | [diff] [blame] | 47 | submit->dev = dev; |
| 48 | submit->gpu = gpu; |
Rob Clark | ba344af | 2016-05-24 18:43:26 -0400 | [diff] [blame] | 49 | submit->fence = NULL; |
Rob Clark | 4816b62 | 2016-05-03 10:10:15 -0400 | [diff] [blame] | 50 | submit->pid = get_pid(task_pid(current)); |
Rob Clark | 6b597ce | 2016-06-01 14:17:40 -0400 | [diff] [blame] | 51 | submit->cmd = (void *)&submit->bos[nr_bos]; |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 52 | |
Rob Clark | 6860b56 | 2016-05-03 09:49:40 -0400 | [diff] [blame] | 53 | /* initially, until copy_from_user() and bo lookup succeeds: */ |
| 54 | submit->nr_bos = 0; |
| 55 | submit->nr_cmds = 0; |
| 56 | |
Rob Clark | ba344af | 2016-05-24 18:43:26 -0400 | [diff] [blame] | 57 | INIT_LIST_HEAD(&submit->node); |
Rob Clark | 6860b56 | 2016-05-03 09:49:40 -0400 | [diff] [blame] | 58 | INIT_LIST_HEAD(&submit->bo_list); |
| 59 | ww_acquire_init(&submit->ticket, &reservation_ww_class); |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 60 | |
| 61 | return submit; |
| 62 | } |
| 63 | |
Rob Clark | 40e6815 | 2016-05-03 09:50:26 -0400 | [diff] [blame] | 64 | void msm_gem_submit_free(struct msm_gem_submit *submit) |
| 65 | { |
| 66 | fence_put(submit->fence); |
| 67 | list_del(&submit->node); |
Rob Clark | 4816b62 | 2016-05-03 10:10:15 -0400 | [diff] [blame] | 68 | put_pid(submit->pid); |
Rob Clark | 40e6815 | 2016-05-03 09:50:26 -0400 | [diff] [blame] | 69 | kfree(submit); |
| 70 | } |
| 71 | |
Rob Clark | 89f82cb | 2016-08-22 15:15:23 -0400 | [diff] [blame] | 72 | static inline unsigned long __must_check |
| 73 | copy_from_user_inatomic(void *to, const void __user *from, unsigned long n) |
| 74 | { |
| 75 | if (access_ok(VERIFY_READ, from, n)) |
| 76 | return __copy_from_user_inatomic(to, from, n); |
| 77 | return -EFAULT; |
| 78 | } |
| 79 | |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 80 | static int submit_lookup_objects(struct msm_gem_submit *submit, |
| 81 | struct drm_msm_gem_submit *args, struct drm_file *file) |
| 82 | { |
| 83 | unsigned i; |
| 84 | int ret = 0; |
| 85 | |
| 86 | spin_lock(&file->table_lock); |
Rob Clark | 89f82cb | 2016-08-22 15:15:23 -0400 | [diff] [blame] | 87 | pagefault_disable(); |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 88 | |
| 89 | for (i = 0; i < args->nr_bos; i++) { |
| 90 | struct drm_msm_gem_submit_bo submit_bo; |
| 91 | struct drm_gem_object *obj; |
| 92 | struct msm_gem_object *msm_obj; |
| 93 | void __user *userptr = |
Gustavo Padovan | 3ed605b | 2016-04-26 12:32:27 -0300 | [diff] [blame] | 94 | u64_to_user_ptr(args->bos + (i * sizeof(submit_bo))); |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 95 | |
Rob Clark | a9e26ca | 2016-06-01 14:02:51 -0400 | [diff] [blame] | 96 | /* make sure we don't have garbage flags, in case we hit |
| 97 | * error path before flags is initialized: |
| 98 | */ |
| 99 | submit->bos[i].flags = 0; |
| 100 | |
Rob Clark | 89f82cb | 2016-08-22 15:15:23 -0400 | [diff] [blame] | 101 | ret = copy_from_user_inatomic(&submit_bo, userptr, sizeof(submit_bo)); |
| 102 | if (unlikely(ret)) { |
| 103 | pagefault_enable(); |
| 104 | spin_unlock(&file->table_lock); |
| 105 | ret = copy_from_user(&submit_bo, userptr, sizeof(submit_bo)); |
| 106 | if (ret) |
| 107 | goto out; |
| 108 | spin_lock(&file->table_lock); |
| 109 | pagefault_disable(); |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 110 | } |
| 111 | |
Rob Clark | 93ddb0d | 2014-03-03 09:42:33 -0500 | [diff] [blame] | 112 | if (submit_bo.flags & ~MSM_SUBMIT_BO_FLAGS) { |
Rob Clark | 1987253 | 2013-09-06 15:36:40 -0400 | [diff] [blame] | 113 | DRM_ERROR("invalid flags: %x\n", submit_bo.flags); |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 114 | ret = -EINVAL; |
| 115 | goto out_unlock; |
| 116 | } |
| 117 | |
| 118 | submit->bos[i].flags = submit_bo.flags; |
| 119 | /* in validate_objects() we figure out if this is true: */ |
| 120 | submit->bos[i].iova = submit_bo.presumed; |
| 121 | |
| 122 | /* normally use drm_gem_object_lookup(), but for bulk lookup |
| 123 | * all under single table_lock just hit object_idr directly: |
| 124 | */ |
| 125 | obj = idr_find(&file->object_idr, submit_bo.handle); |
| 126 | if (!obj) { |
Rob Clark | 1987253 | 2013-09-06 15:36:40 -0400 | [diff] [blame] | 127 | DRM_ERROR("invalid handle %u at index %u\n", submit_bo.handle, i); |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 128 | ret = -EINVAL; |
| 129 | goto out_unlock; |
| 130 | } |
| 131 | |
| 132 | msm_obj = to_msm_bo(obj); |
| 133 | |
| 134 | if (!list_empty(&msm_obj->submit_entry)) { |
Rob Clark | 1987253 | 2013-09-06 15:36:40 -0400 | [diff] [blame] | 135 | DRM_ERROR("handle %u at index %u already on submit list\n", |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 136 | submit_bo.handle, i); |
| 137 | ret = -EINVAL; |
| 138 | goto out_unlock; |
| 139 | } |
| 140 | |
| 141 | drm_gem_object_reference(obj); |
| 142 | |
| 143 | submit->bos[i].obj = msm_obj; |
| 144 | |
| 145 | list_add_tail(&msm_obj->submit_entry, &submit->bo_list); |
| 146 | } |
| 147 | |
| 148 | out_unlock: |
Rob Clark | 89f82cb | 2016-08-22 15:15:23 -0400 | [diff] [blame] | 149 | pagefault_enable(); |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 150 | spin_unlock(&file->table_lock); |
| 151 | |
Rob Clark | 89f82cb | 2016-08-22 15:15:23 -0400 | [diff] [blame] | 152 | out: |
| 153 | submit->nr_bos = i; |
| 154 | |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 155 | return ret; |
| 156 | } |
| 157 | |
| 158 | static void submit_unlock_unpin_bo(struct msm_gem_submit *submit, int i) |
| 159 | { |
| 160 | struct msm_gem_object *msm_obj = submit->bos[i].obj; |
| 161 | |
| 162 | if (submit->bos[i].flags & BO_PINNED) |
Jordan Crouse | d8e9652 | 2017-02-13 10:14:16 -0700 | [diff] [blame] | 163 | msm_gem_put_iova(&msm_obj->base, submit->gpu->aspace); |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 164 | |
| 165 | if (submit->bos[i].flags & BO_LOCKED) |
| 166 | ww_mutex_unlock(&msm_obj->resv->lock); |
| 167 | |
| 168 | if (!(submit->bos[i].flags & BO_VALID)) |
| 169 | submit->bos[i].iova = 0; |
| 170 | |
| 171 | submit->bos[i].flags &= ~(BO_LOCKED | BO_PINNED); |
| 172 | } |
| 173 | |
| 174 | /* This is where we make sure all the bo's are reserved and pin'd: */ |
Rob Clark | 340faef | 2016-03-14 13:56:37 -0400 | [diff] [blame] | 175 | static int submit_lock_objects(struct msm_gem_submit *submit) |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 176 | { |
| 177 | int contended, slow_locked = -1, i, ret = 0; |
| 178 | |
| 179 | retry: |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 180 | for (i = 0; i < submit->nr_bos; i++) { |
| 181 | struct msm_gem_object *msm_obj = submit->bos[i].obj; |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 182 | |
| 183 | if (slow_locked == i) |
| 184 | slow_locked = -1; |
| 185 | |
| 186 | contended = i; |
| 187 | |
| 188 | if (!(submit->bos[i].flags & BO_LOCKED)) { |
| 189 | ret = ww_mutex_lock_interruptible(&msm_obj->resv->lock, |
| 190 | &submit->ticket); |
| 191 | if (ret) |
| 192 | goto fail; |
| 193 | submit->bos[i].flags |= BO_LOCKED; |
| 194 | } |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 195 | } |
| 196 | |
| 197 | ww_acquire_done(&submit->ticket); |
| 198 | |
| 199 | return 0; |
| 200 | |
| 201 | fail: |
| 202 | for (; i >= 0; i--) |
| 203 | submit_unlock_unpin_bo(submit, i); |
| 204 | |
| 205 | if (slow_locked > 0) |
| 206 | submit_unlock_unpin_bo(submit, slow_locked); |
| 207 | |
| 208 | if (ret == -EDEADLK) { |
| 209 | struct msm_gem_object *msm_obj = submit->bos[contended].obj; |
| 210 | /* we lost out in a seqno race, lock and retry.. */ |
| 211 | ret = ww_mutex_lock_slow_interruptible(&msm_obj->resv->lock, |
| 212 | &submit->ticket); |
| 213 | if (!ret) { |
| 214 | submit->bos[contended].flags |= BO_LOCKED; |
| 215 | slow_locked = contended; |
| 216 | goto retry; |
| 217 | } |
| 218 | } |
| 219 | |
| 220 | return ret; |
| 221 | } |
| 222 | |
Rob Clark | b6295f9 | 2016-03-15 18:26:28 -0400 | [diff] [blame] | 223 | static int submit_fence_sync(struct msm_gem_submit *submit) |
| 224 | { |
| 225 | int i, ret = 0; |
| 226 | |
| 227 | for (i = 0; i < submit->nr_bos; i++) { |
| 228 | struct msm_gem_object *msm_obj = submit->bos[i].obj; |
| 229 | bool write = submit->bos[i].flags & MSM_SUBMIT_BO_WRITE; |
| 230 | |
| 231 | ret = msm_gem_sync_object(&msm_obj->base, submit->gpu->fctx, write); |
| 232 | if (ret) |
| 233 | break; |
| 234 | } |
| 235 | |
| 236 | return ret; |
| 237 | } |
| 238 | |
Rob Clark | 340faef | 2016-03-14 13:56:37 -0400 | [diff] [blame] | 239 | static int submit_pin_objects(struct msm_gem_submit *submit) |
| 240 | { |
| 241 | int i, ret = 0; |
| 242 | |
| 243 | submit->valid = true; |
| 244 | |
| 245 | for (i = 0; i < submit->nr_bos; i++) { |
| 246 | struct msm_gem_object *msm_obj = submit->bos[i].obj; |
| 247 | uint32_t iova; |
| 248 | |
| 249 | /* if locking succeeded, pin bo: */ |
| 250 | ret = msm_gem_get_iova_locked(&msm_obj->base, |
Jordan Crouse | d8e9652 | 2017-02-13 10:14:16 -0700 | [diff] [blame] | 251 | submit->gpu->aspace, &iova); |
Rob Clark | 340faef | 2016-03-14 13:56:37 -0400 | [diff] [blame] | 252 | |
| 253 | if (ret) |
| 254 | break; |
| 255 | |
| 256 | submit->bos[i].flags |= BO_PINNED; |
| 257 | |
| 258 | if (iova == submit->bos[i].iova) { |
| 259 | submit->bos[i].flags |= BO_VALID; |
| 260 | } else { |
| 261 | submit->bos[i].iova = iova; |
| 262 | /* iova changed, so address in cmdstream is not valid: */ |
| 263 | submit->bos[i].flags &= ~BO_VALID; |
| 264 | submit->valid = false; |
| 265 | } |
| 266 | } |
| 267 | |
| 268 | return ret; |
| 269 | } |
| 270 | |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 271 | static int submit_bo(struct msm_gem_submit *submit, uint32_t idx, |
| 272 | struct msm_gem_object **obj, uint32_t *iova, bool *valid) |
| 273 | { |
| 274 | if (idx >= submit->nr_bos) { |
Rob Clark | 1987253 | 2013-09-06 15:36:40 -0400 | [diff] [blame] | 275 | DRM_ERROR("invalid buffer index: %u (out of %u)\n", |
| 276 | idx, submit->nr_bos); |
| 277 | return -EINVAL; |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 278 | } |
| 279 | |
| 280 | if (obj) |
| 281 | *obj = submit->bos[idx].obj; |
| 282 | if (iova) |
| 283 | *iova = submit->bos[idx].iova; |
| 284 | if (valid) |
| 285 | *valid = !!(submit->bos[idx].flags & BO_VALID); |
| 286 | |
| 287 | return 0; |
| 288 | } |
| 289 | |
| 290 | /* process the reloc's and patch up the cmdstream as needed: */ |
| 291 | static int submit_reloc(struct msm_gem_submit *submit, struct msm_gem_object *obj, |
| 292 | uint32_t offset, uint32_t nr_relocs, uint64_t relocs) |
| 293 | { |
| 294 | uint32_t i, last_offset = 0; |
| 295 | uint32_t *ptr; |
| 296 | int ret; |
| 297 | |
| 298 | if (offset % 4) { |
Rob Clark | 1987253 | 2013-09-06 15:36:40 -0400 | [diff] [blame] | 299 | DRM_ERROR("non-aligned cmdstream buffer: %u\n", offset); |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 300 | return -EINVAL; |
| 301 | } |
| 302 | |
| 303 | /* For now, just map the entire thing. Eventually we probably |
| 304 | * to do it page-by-page, w/ kmap() if not vmap()d.. |
| 305 | */ |
Rob Clark | 18f2304 | 2016-05-26 16:24:35 -0400 | [diff] [blame] | 306 | ptr = msm_gem_get_vaddr_locked(&obj->base); |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 307 | |
| 308 | if (IS_ERR(ptr)) { |
| 309 | ret = PTR_ERR(ptr); |
| 310 | DBG("failed to map: %d", ret); |
| 311 | return ret; |
| 312 | } |
| 313 | |
| 314 | for (i = 0; i < nr_relocs; i++) { |
| 315 | struct drm_msm_gem_submit_reloc submit_reloc; |
| 316 | void __user *userptr = |
Gustavo Padovan | 3ed605b | 2016-04-26 12:32:27 -0300 | [diff] [blame] | 317 | u64_to_user_ptr(relocs + (i * sizeof(submit_reloc))); |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 318 | uint32_t iova, off; |
| 319 | bool valid; |
| 320 | |
| 321 | ret = copy_from_user(&submit_reloc, userptr, sizeof(submit_reloc)); |
| 322 | if (ret) |
| 323 | return -EFAULT; |
| 324 | |
| 325 | if (submit_reloc.submit_offset % 4) { |
Rob Clark | 1987253 | 2013-09-06 15:36:40 -0400 | [diff] [blame] | 326 | DRM_ERROR("non-aligned reloc offset: %u\n", |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 327 | submit_reloc.submit_offset); |
| 328 | return -EINVAL; |
| 329 | } |
| 330 | |
| 331 | /* offset in dwords: */ |
| 332 | off = submit_reloc.submit_offset / 4; |
| 333 | |
| 334 | if ((off >= (obj->base.size / 4)) || |
| 335 | (off < last_offset)) { |
Rob Clark | 1987253 | 2013-09-06 15:36:40 -0400 | [diff] [blame] | 336 | DRM_ERROR("invalid offset %u at reloc %u\n", off, i); |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 337 | return -EINVAL; |
| 338 | } |
| 339 | |
| 340 | ret = submit_bo(submit, submit_reloc.reloc_idx, NULL, &iova, &valid); |
| 341 | if (ret) |
| 342 | return ret; |
| 343 | |
| 344 | if (valid) |
| 345 | continue; |
| 346 | |
| 347 | iova += submit_reloc.reloc_offset; |
| 348 | |
| 349 | if (submit_reloc.shift < 0) |
| 350 | iova >>= -submit_reloc.shift; |
| 351 | else |
| 352 | iova <<= submit_reloc.shift; |
| 353 | |
| 354 | ptr[off] = iova | submit_reloc.or; |
| 355 | |
| 356 | last_offset = off; |
| 357 | } |
| 358 | |
Rob Clark | 18f2304 | 2016-05-26 16:24:35 -0400 | [diff] [blame] | 359 | msm_gem_put_vaddr_locked(&obj->base); |
| 360 | |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 361 | return 0; |
| 362 | } |
| 363 | |
Rob Clark | 40e6815 | 2016-05-03 09:50:26 -0400 | [diff] [blame] | 364 | static void submit_cleanup(struct msm_gem_submit *submit) |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 365 | { |
| 366 | unsigned i; |
| 367 | |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 368 | for (i = 0; i < submit->nr_bos; i++) { |
| 369 | struct msm_gem_object *msm_obj = submit->bos[i].obj; |
| 370 | submit_unlock_unpin_bo(submit, i); |
| 371 | list_del_init(&msm_obj->submit_entry); |
| 372 | drm_gem_object_unreference(&msm_obj->base); |
| 373 | } |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 374 | |
| 375 | ww_acquire_fini(&submit->ticket); |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 376 | } |
| 377 | |
| 378 | int msm_ioctl_gem_submit(struct drm_device *dev, void *data, |
| 379 | struct drm_file *file) |
| 380 | { |
| 381 | struct msm_drm_private *priv = dev->dev_private; |
| 382 | struct drm_msm_gem_submit *args = data; |
| 383 | struct msm_file_private *ctx = file->driver_priv; |
| 384 | struct msm_gem_submit *submit; |
Rob Clark | c01a958 | 2016-02-03 13:12:31 -0500 | [diff] [blame] | 385 | struct msm_gpu *gpu = priv->gpu; |
Rob Clark | f0a42bb | 2016-06-16 16:08:19 -0400 | [diff] [blame] | 386 | struct fence *in_fence = NULL; |
Rob Clark | 4cd0945 | 2016-06-16 16:43:49 -0400 | [diff] [blame] | 387 | struct sync_file *sync_file = NULL; |
| 388 | int out_fence_fd = -1; |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 389 | unsigned i; |
| 390 | int ret; |
| 391 | |
Rob Clark | c01a958 | 2016-02-03 13:12:31 -0500 | [diff] [blame] | 392 | if (!gpu) |
| 393 | return -ENXIO; |
| 394 | |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 395 | /* for now, we just have 3d pipe.. eventually this would need to |
| 396 | * be more clever to dispatch to appropriate gpu module: |
| 397 | */ |
Rob Clark | d9c181e | 2016-04-23 10:08:59 -0400 | [diff] [blame] | 398 | if (MSM_PIPE_ID(args->flags) != MSM_PIPE_3D0) |
| 399 | return -EINVAL; |
| 400 | |
| 401 | if (MSM_PIPE_FLAGS(args->flags) & ~MSM_SUBMIT_FLAGS) |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 402 | return -EINVAL; |
| 403 | |
Rob Clark | b5b4c26 | 2016-05-17 15:43:35 -0400 | [diff] [blame] | 404 | ret = mutex_lock_interruptible(&dev->struct_mutex); |
| 405 | if (ret) |
| 406 | return ret; |
Rob Clark | 687f084 | 2016-02-03 13:24:35 -0500 | [diff] [blame] | 407 | |
Rob Clark | 4cd0945 | 2016-06-16 16:43:49 -0400 | [diff] [blame] | 408 | if (args->flags & MSM_SUBMIT_FENCE_FD_OUT) { |
| 409 | out_fence_fd = get_unused_fd_flags(O_CLOEXEC); |
| 410 | if (out_fence_fd < 0) { |
| 411 | ret = out_fence_fd; |
| 412 | goto out_unlock; |
| 413 | } |
| 414 | } |
Rob Clark | d78d383 | 2016-08-22 15:28:38 -0400 | [diff] [blame] | 415 | priv->struct_mutex_task = current; |
Rob Clark | 4cd0945 | 2016-06-16 16:43:49 -0400 | [diff] [blame] | 416 | |
Rob Clark | 6b597ce | 2016-06-01 14:17:40 -0400 | [diff] [blame] | 417 | submit = submit_create(dev, gpu, args->nr_bos, args->nr_cmds); |
Rob Clark | b5b4c26 | 2016-05-17 15:43:35 -0400 | [diff] [blame] | 418 | if (!submit) { |
| 419 | ret = -ENOMEM; |
| 420 | goto out_unlock; |
| 421 | } |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 422 | |
| 423 | ret = submit_lookup_objects(submit, args, file); |
| 424 | if (ret) |
| 425 | goto out; |
| 426 | |
Rob Clark | 340faef | 2016-03-14 13:56:37 -0400 | [diff] [blame] | 427 | ret = submit_lock_objects(submit); |
| 428 | if (ret) |
| 429 | goto out; |
| 430 | |
Rob Clark | f0a42bb | 2016-06-16 16:08:19 -0400 | [diff] [blame] | 431 | if (args->flags & MSM_SUBMIT_FENCE_FD_IN) { |
| 432 | in_fence = sync_file_get_fence(args->fence_fd); |
| 433 | |
| 434 | if (!in_fence) { |
| 435 | ret = -EINVAL; |
| 436 | goto out; |
| 437 | } |
| 438 | |
| 439 | /* TODO if we get an array-fence due to userspace merging multiple |
| 440 | * fences, we need a way to determine if all the backing fences |
| 441 | * are from our own context.. |
| 442 | */ |
| 443 | |
| 444 | if (in_fence->context != gpu->fctx->context) { |
| 445 | ret = fence_wait(in_fence, true); |
| 446 | if (ret) |
| 447 | goto out; |
| 448 | } |
| 449 | |
| 450 | } |
| 451 | |
| 452 | if (!(args->fence & MSM_SUBMIT_NO_IMPLICIT)) { |
| 453 | ret = submit_fence_sync(submit); |
| 454 | if (ret) |
| 455 | goto out; |
| 456 | } |
Rob Clark | b6295f9 | 2016-03-15 18:26:28 -0400 | [diff] [blame] | 457 | |
Rob Clark | 340faef | 2016-03-14 13:56:37 -0400 | [diff] [blame] | 458 | ret = submit_pin_objects(submit); |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 459 | if (ret) |
| 460 | goto out; |
| 461 | |
| 462 | for (i = 0; i < args->nr_cmds; i++) { |
| 463 | struct drm_msm_gem_submit_cmd submit_cmd; |
| 464 | void __user *userptr = |
Gustavo Padovan | 3ed605b | 2016-04-26 12:32:27 -0300 | [diff] [blame] | 465 | u64_to_user_ptr(args->cmds + (i * sizeof(submit_cmd))); |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 466 | struct msm_gem_object *msm_obj; |
| 467 | uint32_t iova; |
| 468 | |
| 469 | ret = copy_from_user(&submit_cmd, userptr, sizeof(submit_cmd)); |
| 470 | if (ret) { |
| 471 | ret = -EFAULT; |
| 472 | goto out; |
| 473 | } |
| 474 | |
Rob Clark | 93ddb0d | 2014-03-03 09:42:33 -0500 | [diff] [blame] | 475 | /* validate input from userspace: */ |
| 476 | switch (submit_cmd.type) { |
| 477 | case MSM_SUBMIT_CMD_BUF: |
| 478 | case MSM_SUBMIT_CMD_IB_TARGET_BUF: |
| 479 | case MSM_SUBMIT_CMD_CTX_RESTORE_BUF: |
| 480 | break; |
| 481 | default: |
| 482 | DRM_ERROR("invalid type: %08x\n", submit_cmd.type); |
| 483 | ret = -EINVAL; |
| 484 | goto out; |
| 485 | } |
| 486 | |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 487 | ret = submit_bo(submit, submit_cmd.submit_idx, |
| 488 | &msm_obj, &iova, NULL); |
| 489 | if (ret) |
| 490 | goto out; |
| 491 | |
| 492 | if (submit_cmd.size % 4) { |
Rob Clark | 1987253 | 2013-09-06 15:36:40 -0400 | [diff] [blame] | 493 | DRM_ERROR("non-aligned cmdstream buffer size: %u\n", |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 494 | submit_cmd.size); |
| 495 | ret = -EINVAL; |
| 496 | goto out; |
| 497 | } |
| 498 | |
Rob Clark | 1987253 | 2013-09-06 15:36:40 -0400 | [diff] [blame] | 499 | if ((submit_cmd.size + submit_cmd.submit_offset) >= |
| 500 | msm_obj->base.size) { |
| 501 | DRM_ERROR("invalid cmdstream size: %u\n", submit_cmd.size); |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 502 | ret = -EINVAL; |
| 503 | goto out; |
| 504 | } |
| 505 | |
| 506 | submit->cmd[i].type = submit_cmd.type; |
| 507 | submit->cmd[i].size = submit_cmd.size / 4; |
| 508 | submit->cmd[i].iova = iova + submit_cmd.submit_offset; |
Rob Clark | a7d3c95 | 2014-05-30 14:47:38 -0400 | [diff] [blame] | 509 | submit->cmd[i].idx = submit_cmd.submit_idx; |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 510 | |
| 511 | if (submit->valid) |
| 512 | continue; |
| 513 | |
| 514 | ret = submit_reloc(submit, msm_obj, submit_cmd.submit_offset, |
| 515 | submit_cmd.nr_relocs, submit_cmd.relocs); |
| 516 | if (ret) |
| 517 | goto out; |
| 518 | } |
| 519 | |
| 520 | submit->nr_cmds = i; |
| 521 | |
Rob Clark | f44d32c | 2016-06-16 16:37:38 -0400 | [diff] [blame] | 522 | submit->fence = msm_fence_alloc(gpu->fctx); |
| 523 | if (IS_ERR(submit->fence)) { |
| 524 | ret = PTR_ERR(submit->fence); |
| 525 | submit->fence = NULL; |
| 526 | goto out; |
| 527 | } |
| 528 | |
Rob Clark | 4cd0945 | 2016-06-16 16:43:49 -0400 | [diff] [blame] | 529 | if (args->flags & MSM_SUBMIT_FENCE_FD_OUT) { |
| 530 | sync_file = sync_file_create(submit->fence); |
| 531 | if (!sync_file) { |
| 532 | ret = -ENOMEM; |
| 533 | goto out; |
| 534 | } |
| 535 | } |
| 536 | |
Rob Clark | f44d32c | 2016-06-16 16:37:38 -0400 | [diff] [blame] | 537 | msm_gpu_submit(gpu, submit, ctx); |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 538 | |
Rob Clark | b6295f9 | 2016-03-15 18:26:28 -0400 | [diff] [blame] | 539 | args->fence = submit->fence->seqno; |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 540 | |
Rob Clark | 4cd0945 | 2016-06-16 16:43:49 -0400 | [diff] [blame] | 541 | if (args->flags & MSM_SUBMIT_FENCE_FD_OUT) { |
| 542 | fd_install(out_fence_fd, sync_file->file); |
| 543 | args->fence_fd = out_fence_fd; |
| 544 | } |
| 545 | |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 546 | out: |
Rob Clark | f0a42bb | 2016-06-16 16:08:19 -0400 | [diff] [blame] | 547 | if (in_fence) |
| 548 | fence_put(in_fence); |
Rob Clark | 40e6815 | 2016-05-03 09:50:26 -0400 | [diff] [blame] | 549 | submit_cleanup(submit); |
| 550 | if (ret) |
| 551 | msm_gem_submit_free(submit); |
Rob Clark | b5b4c26 | 2016-05-17 15:43:35 -0400 | [diff] [blame] | 552 | out_unlock: |
Rob Clark | 4cd0945 | 2016-06-16 16:43:49 -0400 | [diff] [blame] | 553 | if (ret && (out_fence_fd >= 0)) |
| 554 | put_unused_fd(out_fence_fd); |
Rob Clark | d78d383 | 2016-08-22 15:28:38 -0400 | [diff] [blame] | 555 | priv->struct_mutex_task = NULL; |
Rob Clark | c2703b1 | 2014-02-06 19:19:20 -0500 | [diff] [blame] | 556 | mutex_unlock(&dev->struct_mutex); |
Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 557 | return ret; |
| 558 | } |