Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright © 2008 Intel Corporation |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 5 | * copy of this software and associated documentation files (the "Software"), |
| 6 | * to deal in the Software without restriction, including without limitation |
| 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 8 | * and/or sell copies of the Software, and to permit persons to whom the |
| 9 | * Software is furnished to do so, subject to the following conditions: |
| 10 | * |
| 11 | * The above copyright notice and this permission notice (including the next |
| 12 | * paragraph) shall be included in all copies or substantial portions of the |
| 13 | * Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| 21 | * IN THE SOFTWARE. |
| 22 | * |
| 23 | * Authors: |
| 24 | * Eric Anholt <eric@anholt.net> |
| 25 | * |
| 26 | */ |
| 27 | |
| 28 | #include "drmP.h" |
| 29 | #include "drm.h" |
| 30 | #include "i915_drm.h" |
| 31 | #include "i915_drv.h" |
| 32 | #include <linux/swap.h> |
| 33 | |
| 34 | static int |
| 35 | i915_gem_object_set_domain(struct drm_gem_object *obj, |
| 36 | uint32_t read_domains, |
| 37 | uint32_t write_domain); |
| 38 | static int |
| 39 | i915_gem_object_set_domain_range(struct drm_gem_object *obj, |
| 40 | uint64_t offset, |
| 41 | uint64_t size, |
| 42 | uint32_t read_domains, |
| 43 | uint32_t write_domain); |
| 44 | static int |
| 45 | i915_gem_set_domain(struct drm_gem_object *obj, |
| 46 | struct drm_file *file_priv, |
| 47 | uint32_t read_domains, |
| 48 | uint32_t write_domain); |
| 49 | static int i915_gem_object_get_page_list(struct drm_gem_object *obj); |
| 50 | static void i915_gem_object_free_page_list(struct drm_gem_object *obj); |
| 51 | static int i915_gem_object_wait_rendering(struct drm_gem_object *obj); |
| 52 | |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 53 | static void |
| 54 | i915_gem_cleanup_ringbuffer(struct drm_device *dev); |
| 55 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 56 | int |
| 57 | i915_gem_init_ioctl(struct drm_device *dev, void *data, |
| 58 | struct drm_file *file_priv) |
| 59 | { |
| 60 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 61 | struct drm_i915_gem_init *args = data; |
| 62 | |
| 63 | mutex_lock(&dev->struct_mutex); |
| 64 | |
| 65 | if (args->gtt_start >= args->gtt_end || |
| 66 | (args->gtt_start & (PAGE_SIZE - 1)) != 0 || |
| 67 | (args->gtt_end & (PAGE_SIZE - 1)) != 0) { |
| 68 | mutex_unlock(&dev->struct_mutex); |
| 69 | return -EINVAL; |
| 70 | } |
| 71 | |
| 72 | drm_mm_init(&dev_priv->mm.gtt_space, args->gtt_start, |
| 73 | args->gtt_end - args->gtt_start); |
| 74 | |
| 75 | dev->gtt_total = (uint32_t) (args->gtt_end - args->gtt_start); |
| 76 | |
| 77 | mutex_unlock(&dev->struct_mutex); |
| 78 | |
| 79 | return 0; |
| 80 | } |
| 81 | |
| 82 | |
| 83 | /** |
| 84 | * Creates a new mm object and returns a handle to it. |
| 85 | */ |
| 86 | int |
| 87 | i915_gem_create_ioctl(struct drm_device *dev, void *data, |
| 88 | struct drm_file *file_priv) |
| 89 | { |
| 90 | struct drm_i915_gem_create *args = data; |
| 91 | struct drm_gem_object *obj; |
| 92 | int handle, ret; |
| 93 | |
| 94 | args->size = roundup(args->size, PAGE_SIZE); |
| 95 | |
| 96 | /* Allocate the new object */ |
| 97 | obj = drm_gem_object_alloc(dev, args->size); |
| 98 | if (obj == NULL) |
| 99 | return -ENOMEM; |
| 100 | |
| 101 | ret = drm_gem_handle_create(file_priv, obj, &handle); |
| 102 | mutex_lock(&dev->struct_mutex); |
| 103 | drm_gem_object_handle_unreference(obj); |
| 104 | mutex_unlock(&dev->struct_mutex); |
| 105 | |
| 106 | if (ret) |
| 107 | return ret; |
| 108 | |
| 109 | args->handle = handle; |
| 110 | |
| 111 | return 0; |
| 112 | } |
| 113 | |
| 114 | /** |
| 115 | * Reads data from the object referenced by handle. |
| 116 | * |
| 117 | * On error, the contents of *data are undefined. |
| 118 | */ |
| 119 | int |
| 120 | i915_gem_pread_ioctl(struct drm_device *dev, void *data, |
| 121 | struct drm_file *file_priv) |
| 122 | { |
| 123 | struct drm_i915_gem_pread *args = data; |
| 124 | struct drm_gem_object *obj; |
| 125 | struct drm_i915_gem_object *obj_priv; |
| 126 | ssize_t read; |
| 127 | loff_t offset; |
| 128 | int ret; |
| 129 | |
| 130 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
| 131 | if (obj == NULL) |
| 132 | return -EBADF; |
| 133 | obj_priv = obj->driver_private; |
| 134 | |
| 135 | /* Bounds check source. |
| 136 | * |
| 137 | * XXX: This could use review for overflow issues... |
| 138 | */ |
| 139 | if (args->offset > obj->size || args->size > obj->size || |
| 140 | args->offset + args->size > obj->size) { |
| 141 | drm_gem_object_unreference(obj); |
| 142 | return -EINVAL; |
| 143 | } |
| 144 | |
| 145 | mutex_lock(&dev->struct_mutex); |
| 146 | |
| 147 | ret = i915_gem_object_set_domain_range(obj, args->offset, args->size, |
| 148 | I915_GEM_DOMAIN_CPU, 0); |
| 149 | if (ret != 0) { |
| 150 | drm_gem_object_unreference(obj); |
| 151 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | e7d22bc | 2008-10-07 13:40:36 +1000 | [diff] [blame] | 152 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 153 | } |
| 154 | |
| 155 | offset = args->offset; |
| 156 | |
| 157 | read = vfs_read(obj->filp, (char __user *)(uintptr_t)args->data_ptr, |
| 158 | args->size, &offset); |
| 159 | if (read != args->size) { |
| 160 | drm_gem_object_unreference(obj); |
| 161 | mutex_unlock(&dev->struct_mutex); |
| 162 | if (read < 0) |
| 163 | return read; |
| 164 | else |
| 165 | return -EINVAL; |
| 166 | } |
| 167 | |
| 168 | drm_gem_object_unreference(obj); |
| 169 | mutex_unlock(&dev->struct_mutex); |
| 170 | |
| 171 | return 0; |
| 172 | } |
| 173 | |
Linus Torvalds | 9b7530cc | 2008-10-20 14:16:43 -0700 | [diff] [blame^] | 174 | /* |
| 175 | * Try to write quickly with an atomic kmap. Return true on success. |
| 176 | * |
| 177 | * If this fails (which includes a partial write), we'll redo the whole |
| 178 | * thing with the slow version. |
| 179 | * |
| 180 | * This is a workaround for the low performance of iounmap (approximate |
| 181 | * 10% cpu cost on normal 3D workloads). kmap_atomic on HIGHMEM kernels |
| 182 | * happens to let us map card memory without taking IPIs. When the vmap |
| 183 | * rework lands we should be able to dump this hack. |
| 184 | */ |
| 185 | static inline int fast_user_write(unsigned long pfn, char __user *user_data, int l) |
| 186 | { |
| 187 | #ifdef CONFIG_HIGHMEM |
| 188 | unsigned long unwritten; |
| 189 | char *vaddr_atomic; |
| 190 | |
| 191 | vaddr_atomic = kmap_atomic_pfn(pfn, KM_USER0); |
| 192 | #if WATCH_PWRITE |
| 193 | DRM_INFO("pwrite i %d o %d l %d pfn %ld vaddr %p\n", |
| 194 | i, o, l, pfn, vaddr_atomic); |
| 195 | #endif |
| 196 | unwritten = __copy_from_user_inatomic_nocache(vaddr_atomic + o, user_data, l); |
| 197 | kunmap_atomic(vaddr_atomic, KM_USER0); |
| 198 | return !unwritten; |
| 199 | #else |
| 200 | return 0; |
| 201 | #endif |
| 202 | } |
| 203 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 204 | static int |
| 205 | i915_gem_gtt_pwrite(struct drm_device *dev, struct drm_gem_object *obj, |
| 206 | struct drm_i915_gem_pwrite *args, |
| 207 | struct drm_file *file_priv) |
| 208 | { |
| 209 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 210 | ssize_t remain; |
| 211 | loff_t offset; |
| 212 | char __user *user_data; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 213 | int ret = 0; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 214 | |
| 215 | user_data = (char __user *) (uintptr_t) args->data_ptr; |
| 216 | remain = args->size; |
| 217 | if (!access_ok(VERIFY_READ, user_data, remain)) |
| 218 | return -EFAULT; |
| 219 | |
| 220 | |
| 221 | mutex_lock(&dev->struct_mutex); |
| 222 | ret = i915_gem_object_pin(obj, 0); |
| 223 | if (ret) { |
| 224 | mutex_unlock(&dev->struct_mutex); |
| 225 | return ret; |
| 226 | } |
| 227 | ret = i915_gem_set_domain(obj, file_priv, |
| 228 | I915_GEM_DOMAIN_GTT, I915_GEM_DOMAIN_GTT); |
| 229 | if (ret) |
| 230 | goto fail; |
| 231 | |
| 232 | obj_priv = obj->driver_private; |
| 233 | offset = obj_priv->gtt_offset + args->offset; |
| 234 | obj_priv->dirty = 1; |
| 235 | |
| 236 | while (remain > 0) { |
Linus Torvalds | 9b7530cc | 2008-10-20 14:16:43 -0700 | [diff] [blame^] | 237 | unsigned long pfn; |
| 238 | int i, o, l; |
| 239 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 240 | /* Operation in this page |
| 241 | * |
| 242 | * i = page number |
| 243 | * o = offset within page |
| 244 | * l = bytes to copy |
| 245 | */ |
| 246 | i = offset >> PAGE_SHIFT; |
| 247 | o = offset & (PAGE_SIZE-1); |
| 248 | l = remain; |
| 249 | if ((o + l) > PAGE_SIZE) |
| 250 | l = PAGE_SIZE - o; |
| 251 | |
| 252 | pfn = (dev->agp->base >> PAGE_SHIFT) + i; |
| 253 | |
Linus Torvalds | 9b7530cc | 2008-10-20 14:16:43 -0700 | [diff] [blame^] | 254 | if (!fast_user_write(pfn, user_data, l)) { |
| 255 | unsigned long unwritten; |
| 256 | char __iomem *vaddr; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 257 | |
Eric Anholt | bd88ee4 | 2008-09-23 14:50:57 -0700 | [diff] [blame] | 258 | vaddr = ioremap_wc(pfn << PAGE_SHIFT, PAGE_SIZE); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 259 | #if WATCH_PWRITE |
| 260 | DRM_INFO("pwrite slow i %d o %d l %d " |
| 261 | "pfn %ld vaddr %p\n", |
| 262 | i, o, l, pfn, vaddr); |
| 263 | #endif |
| 264 | if (vaddr == NULL) { |
| 265 | ret = -EFAULT; |
| 266 | goto fail; |
| 267 | } |
| 268 | unwritten = __copy_from_user(vaddr + o, user_data, l); |
| 269 | #if WATCH_PWRITE |
| 270 | DRM_INFO("unwritten %ld\n", unwritten); |
| 271 | #endif |
| 272 | iounmap(vaddr); |
| 273 | if (unwritten) { |
| 274 | ret = -EFAULT; |
| 275 | goto fail; |
| 276 | } |
| 277 | } |
| 278 | |
| 279 | remain -= l; |
| 280 | user_data += l; |
| 281 | offset += l; |
| 282 | } |
| 283 | #if WATCH_PWRITE && 1 |
| 284 | i915_gem_clflush_object(obj); |
| 285 | i915_gem_dump_object(obj, args->offset + args->size, __func__, ~0); |
| 286 | i915_gem_clflush_object(obj); |
| 287 | #endif |
| 288 | |
| 289 | fail: |
| 290 | i915_gem_object_unpin(obj); |
| 291 | mutex_unlock(&dev->struct_mutex); |
| 292 | |
| 293 | return ret; |
| 294 | } |
| 295 | |
Eric Anholt | 3043c60 | 2008-10-02 12:24:47 -0700 | [diff] [blame] | 296 | static int |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 297 | i915_gem_shmem_pwrite(struct drm_device *dev, struct drm_gem_object *obj, |
| 298 | struct drm_i915_gem_pwrite *args, |
| 299 | struct drm_file *file_priv) |
| 300 | { |
| 301 | int ret; |
| 302 | loff_t offset; |
| 303 | ssize_t written; |
| 304 | |
| 305 | mutex_lock(&dev->struct_mutex); |
| 306 | |
| 307 | ret = i915_gem_set_domain(obj, file_priv, |
| 308 | I915_GEM_DOMAIN_CPU, I915_GEM_DOMAIN_CPU); |
| 309 | if (ret) { |
| 310 | mutex_unlock(&dev->struct_mutex); |
| 311 | return ret; |
| 312 | } |
| 313 | |
| 314 | offset = args->offset; |
| 315 | |
| 316 | written = vfs_write(obj->filp, |
| 317 | (char __user *)(uintptr_t) args->data_ptr, |
| 318 | args->size, &offset); |
| 319 | if (written != args->size) { |
| 320 | mutex_unlock(&dev->struct_mutex); |
| 321 | if (written < 0) |
| 322 | return written; |
| 323 | else |
| 324 | return -EINVAL; |
| 325 | } |
| 326 | |
| 327 | mutex_unlock(&dev->struct_mutex); |
| 328 | |
| 329 | return 0; |
| 330 | } |
| 331 | |
| 332 | /** |
| 333 | * Writes data to the object referenced by handle. |
| 334 | * |
| 335 | * On error, the contents of the buffer that were to be modified are undefined. |
| 336 | */ |
| 337 | int |
| 338 | i915_gem_pwrite_ioctl(struct drm_device *dev, void *data, |
| 339 | struct drm_file *file_priv) |
| 340 | { |
| 341 | struct drm_i915_gem_pwrite *args = data; |
| 342 | struct drm_gem_object *obj; |
| 343 | struct drm_i915_gem_object *obj_priv; |
| 344 | int ret = 0; |
| 345 | |
| 346 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
| 347 | if (obj == NULL) |
| 348 | return -EBADF; |
| 349 | obj_priv = obj->driver_private; |
| 350 | |
| 351 | /* Bounds check destination. |
| 352 | * |
| 353 | * XXX: This could use review for overflow issues... |
| 354 | */ |
| 355 | if (args->offset > obj->size || args->size > obj->size || |
| 356 | args->offset + args->size > obj->size) { |
| 357 | drm_gem_object_unreference(obj); |
| 358 | return -EINVAL; |
| 359 | } |
| 360 | |
| 361 | /* We can only do the GTT pwrite on untiled buffers, as otherwise |
| 362 | * it would end up going through the fenced access, and we'll get |
| 363 | * different detiling behavior between reading and writing. |
| 364 | * pread/pwrite currently are reading and writing from the CPU |
| 365 | * perspective, requiring manual detiling by the client. |
| 366 | */ |
| 367 | if (obj_priv->tiling_mode == I915_TILING_NONE && |
| 368 | dev->gtt_total != 0) |
| 369 | ret = i915_gem_gtt_pwrite(dev, obj, args, file_priv); |
| 370 | else |
| 371 | ret = i915_gem_shmem_pwrite(dev, obj, args, file_priv); |
| 372 | |
| 373 | #if WATCH_PWRITE |
| 374 | if (ret) |
| 375 | DRM_INFO("pwrite failed %d\n", ret); |
| 376 | #endif |
| 377 | |
| 378 | drm_gem_object_unreference(obj); |
| 379 | |
| 380 | return ret; |
| 381 | } |
| 382 | |
| 383 | /** |
| 384 | * Called when user space prepares to use an object |
| 385 | */ |
| 386 | int |
| 387 | i915_gem_set_domain_ioctl(struct drm_device *dev, void *data, |
| 388 | struct drm_file *file_priv) |
| 389 | { |
| 390 | struct drm_i915_gem_set_domain *args = data; |
| 391 | struct drm_gem_object *obj; |
| 392 | int ret; |
| 393 | |
| 394 | if (!(dev->driver->driver_features & DRIVER_GEM)) |
| 395 | return -ENODEV; |
| 396 | |
| 397 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
| 398 | if (obj == NULL) |
| 399 | return -EBADF; |
| 400 | |
| 401 | mutex_lock(&dev->struct_mutex); |
| 402 | #if WATCH_BUF |
| 403 | DRM_INFO("set_domain_ioctl %p(%d), %08x %08x\n", |
| 404 | obj, obj->size, args->read_domains, args->write_domain); |
| 405 | #endif |
| 406 | ret = i915_gem_set_domain(obj, file_priv, |
| 407 | args->read_domains, args->write_domain); |
| 408 | drm_gem_object_unreference(obj); |
| 409 | mutex_unlock(&dev->struct_mutex); |
| 410 | return ret; |
| 411 | } |
| 412 | |
| 413 | /** |
| 414 | * Called when user space has done writes to this buffer |
| 415 | */ |
| 416 | int |
| 417 | i915_gem_sw_finish_ioctl(struct drm_device *dev, void *data, |
| 418 | struct drm_file *file_priv) |
| 419 | { |
| 420 | struct drm_i915_gem_sw_finish *args = data; |
| 421 | struct drm_gem_object *obj; |
| 422 | struct drm_i915_gem_object *obj_priv; |
| 423 | int ret = 0; |
| 424 | |
| 425 | if (!(dev->driver->driver_features & DRIVER_GEM)) |
| 426 | return -ENODEV; |
| 427 | |
| 428 | mutex_lock(&dev->struct_mutex); |
| 429 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
| 430 | if (obj == NULL) { |
| 431 | mutex_unlock(&dev->struct_mutex); |
| 432 | return -EBADF; |
| 433 | } |
| 434 | |
| 435 | #if WATCH_BUF |
| 436 | DRM_INFO("%s: sw_finish %d (%p %d)\n", |
| 437 | __func__, args->handle, obj, obj->size); |
| 438 | #endif |
| 439 | obj_priv = obj->driver_private; |
| 440 | |
| 441 | /* Pinned buffers may be scanout, so flush the cache */ |
| 442 | if ((obj->write_domain & I915_GEM_DOMAIN_CPU) && obj_priv->pin_count) { |
| 443 | i915_gem_clflush_object(obj); |
| 444 | drm_agp_chipset_flush(dev); |
| 445 | } |
| 446 | drm_gem_object_unreference(obj); |
| 447 | mutex_unlock(&dev->struct_mutex); |
| 448 | return ret; |
| 449 | } |
| 450 | |
| 451 | /** |
| 452 | * Maps the contents of an object, returning the address it is mapped |
| 453 | * into. |
| 454 | * |
| 455 | * While the mapping holds a reference on the contents of the object, it doesn't |
| 456 | * imply a ref on the object itself. |
| 457 | */ |
| 458 | int |
| 459 | i915_gem_mmap_ioctl(struct drm_device *dev, void *data, |
| 460 | struct drm_file *file_priv) |
| 461 | { |
| 462 | struct drm_i915_gem_mmap *args = data; |
| 463 | struct drm_gem_object *obj; |
| 464 | loff_t offset; |
| 465 | unsigned long addr; |
| 466 | |
| 467 | if (!(dev->driver->driver_features & DRIVER_GEM)) |
| 468 | return -ENODEV; |
| 469 | |
| 470 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
| 471 | if (obj == NULL) |
| 472 | return -EBADF; |
| 473 | |
| 474 | offset = args->offset; |
| 475 | |
| 476 | down_write(¤t->mm->mmap_sem); |
| 477 | addr = do_mmap(obj->filp, 0, args->size, |
| 478 | PROT_READ | PROT_WRITE, MAP_SHARED, |
| 479 | args->offset); |
| 480 | up_write(¤t->mm->mmap_sem); |
| 481 | mutex_lock(&dev->struct_mutex); |
| 482 | drm_gem_object_unreference(obj); |
| 483 | mutex_unlock(&dev->struct_mutex); |
| 484 | if (IS_ERR((void *)addr)) |
| 485 | return addr; |
| 486 | |
| 487 | args->addr_ptr = (uint64_t) addr; |
| 488 | |
| 489 | return 0; |
| 490 | } |
| 491 | |
| 492 | static void |
| 493 | i915_gem_object_free_page_list(struct drm_gem_object *obj) |
| 494 | { |
| 495 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 496 | int page_count = obj->size / PAGE_SIZE; |
| 497 | int i; |
| 498 | |
| 499 | if (obj_priv->page_list == NULL) |
| 500 | return; |
| 501 | |
| 502 | |
| 503 | for (i = 0; i < page_count; i++) |
| 504 | if (obj_priv->page_list[i] != NULL) { |
| 505 | if (obj_priv->dirty) |
| 506 | set_page_dirty(obj_priv->page_list[i]); |
| 507 | mark_page_accessed(obj_priv->page_list[i]); |
| 508 | page_cache_release(obj_priv->page_list[i]); |
| 509 | } |
| 510 | obj_priv->dirty = 0; |
| 511 | |
| 512 | drm_free(obj_priv->page_list, |
| 513 | page_count * sizeof(struct page *), |
| 514 | DRM_MEM_DRIVER); |
| 515 | obj_priv->page_list = NULL; |
| 516 | } |
| 517 | |
| 518 | static void |
| 519 | i915_gem_object_move_to_active(struct drm_gem_object *obj) |
| 520 | { |
| 521 | struct drm_device *dev = obj->dev; |
| 522 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 523 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 524 | |
| 525 | /* Add a reference if we're newly entering the active list. */ |
| 526 | if (!obj_priv->active) { |
| 527 | drm_gem_object_reference(obj); |
| 528 | obj_priv->active = 1; |
| 529 | } |
| 530 | /* Move from whatever list we were on to the tail of execution. */ |
| 531 | list_move_tail(&obj_priv->list, |
| 532 | &dev_priv->mm.active_list); |
| 533 | } |
| 534 | |
| 535 | |
| 536 | static void |
| 537 | i915_gem_object_move_to_inactive(struct drm_gem_object *obj) |
| 538 | { |
| 539 | struct drm_device *dev = obj->dev; |
| 540 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 541 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 542 | |
| 543 | i915_verify_inactive(dev, __FILE__, __LINE__); |
| 544 | if (obj_priv->pin_count != 0) |
| 545 | list_del_init(&obj_priv->list); |
| 546 | else |
| 547 | list_move_tail(&obj_priv->list, &dev_priv->mm.inactive_list); |
| 548 | |
| 549 | if (obj_priv->active) { |
| 550 | obj_priv->active = 0; |
| 551 | drm_gem_object_unreference(obj); |
| 552 | } |
| 553 | i915_verify_inactive(dev, __FILE__, __LINE__); |
| 554 | } |
| 555 | |
| 556 | /** |
| 557 | * Creates a new sequence number, emitting a write of it to the status page |
| 558 | * plus an interrupt, which will trigger i915_user_interrupt_handler. |
| 559 | * |
| 560 | * Must be called with struct_lock held. |
| 561 | * |
| 562 | * Returned sequence numbers are nonzero on success. |
| 563 | */ |
| 564 | static uint32_t |
| 565 | i915_add_request(struct drm_device *dev, uint32_t flush_domains) |
| 566 | { |
| 567 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 568 | struct drm_i915_gem_request *request; |
| 569 | uint32_t seqno; |
| 570 | int was_empty; |
| 571 | RING_LOCALS; |
| 572 | |
| 573 | request = drm_calloc(1, sizeof(*request), DRM_MEM_DRIVER); |
| 574 | if (request == NULL) |
| 575 | return 0; |
| 576 | |
| 577 | /* Grab the seqno we're going to make this request be, and bump the |
| 578 | * next (skipping 0 so it can be the reserved no-seqno value). |
| 579 | */ |
| 580 | seqno = dev_priv->mm.next_gem_seqno; |
| 581 | dev_priv->mm.next_gem_seqno++; |
| 582 | if (dev_priv->mm.next_gem_seqno == 0) |
| 583 | dev_priv->mm.next_gem_seqno++; |
| 584 | |
| 585 | BEGIN_LP_RING(4); |
| 586 | OUT_RING(MI_STORE_DWORD_INDEX); |
| 587 | OUT_RING(I915_GEM_HWS_INDEX << MI_STORE_DWORD_INDEX_SHIFT); |
| 588 | OUT_RING(seqno); |
| 589 | |
| 590 | OUT_RING(MI_USER_INTERRUPT); |
| 591 | ADVANCE_LP_RING(); |
| 592 | |
| 593 | DRM_DEBUG("%d\n", seqno); |
| 594 | |
| 595 | request->seqno = seqno; |
| 596 | request->emitted_jiffies = jiffies; |
| 597 | request->flush_domains = flush_domains; |
| 598 | was_empty = list_empty(&dev_priv->mm.request_list); |
| 599 | list_add_tail(&request->list, &dev_priv->mm.request_list); |
| 600 | |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 601 | if (was_empty && !dev_priv->mm.suspended) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 602 | schedule_delayed_work(&dev_priv->mm.retire_work, HZ); |
| 603 | return seqno; |
| 604 | } |
| 605 | |
| 606 | /** |
| 607 | * Command execution barrier |
| 608 | * |
| 609 | * Ensures that all commands in the ring are finished |
| 610 | * before signalling the CPU |
| 611 | */ |
Eric Anholt | 3043c60 | 2008-10-02 12:24:47 -0700 | [diff] [blame] | 612 | static uint32_t |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 613 | i915_retire_commands(struct drm_device *dev) |
| 614 | { |
| 615 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 616 | uint32_t cmd = MI_FLUSH | MI_NO_WRITE_FLUSH; |
| 617 | uint32_t flush_domains = 0; |
| 618 | RING_LOCALS; |
| 619 | |
| 620 | /* The sampler always gets flushed on i965 (sigh) */ |
| 621 | if (IS_I965G(dev)) |
| 622 | flush_domains |= I915_GEM_DOMAIN_SAMPLER; |
| 623 | BEGIN_LP_RING(2); |
| 624 | OUT_RING(cmd); |
| 625 | OUT_RING(0); /* noop */ |
| 626 | ADVANCE_LP_RING(); |
| 627 | return flush_domains; |
| 628 | } |
| 629 | |
| 630 | /** |
| 631 | * Moves buffers associated only with the given active seqno from the active |
| 632 | * to inactive list, potentially freeing them. |
| 633 | */ |
| 634 | static void |
| 635 | i915_gem_retire_request(struct drm_device *dev, |
| 636 | struct drm_i915_gem_request *request) |
| 637 | { |
| 638 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 639 | |
| 640 | /* Move any buffers on the active list that are no longer referenced |
| 641 | * by the ringbuffer to the flushing/inactive lists as appropriate. |
| 642 | */ |
| 643 | while (!list_empty(&dev_priv->mm.active_list)) { |
| 644 | struct drm_gem_object *obj; |
| 645 | struct drm_i915_gem_object *obj_priv; |
| 646 | |
| 647 | obj_priv = list_first_entry(&dev_priv->mm.active_list, |
| 648 | struct drm_i915_gem_object, |
| 649 | list); |
| 650 | obj = obj_priv->obj; |
| 651 | |
| 652 | /* If the seqno being retired doesn't match the oldest in the |
| 653 | * list, then the oldest in the list must still be newer than |
| 654 | * this seqno. |
| 655 | */ |
| 656 | if (obj_priv->last_rendering_seqno != request->seqno) |
| 657 | return; |
| 658 | #if WATCH_LRU |
| 659 | DRM_INFO("%s: retire %d moves to inactive list %p\n", |
| 660 | __func__, request->seqno, obj); |
| 661 | #endif |
| 662 | |
| 663 | if (obj->write_domain != 0) { |
| 664 | list_move_tail(&obj_priv->list, |
| 665 | &dev_priv->mm.flushing_list); |
| 666 | } else { |
| 667 | i915_gem_object_move_to_inactive(obj); |
| 668 | } |
| 669 | } |
| 670 | |
| 671 | if (request->flush_domains != 0) { |
| 672 | struct drm_i915_gem_object *obj_priv, *next; |
| 673 | |
| 674 | /* Clear the write domain and activity from any buffers |
| 675 | * that are just waiting for a flush matching the one retired. |
| 676 | */ |
| 677 | list_for_each_entry_safe(obj_priv, next, |
| 678 | &dev_priv->mm.flushing_list, list) { |
| 679 | struct drm_gem_object *obj = obj_priv->obj; |
| 680 | |
| 681 | if (obj->write_domain & request->flush_domains) { |
| 682 | obj->write_domain = 0; |
| 683 | i915_gem_object_move_to_inactive(obj); |
| 684 | } |
| 685 | } |
| 686 | |
| 687 | } |
| 688 | } |
| 689 | |
| 690 | /** |
| 691 | * Returns true if seq1 is later than seq2. |
| 692 | */ |
| 693 | static int |
| 694 | i915_seqno_passed(uint32_t seq1, uint32_t seq2) |
| 695 | { |
| 696 | return (int32_t)(seq1 - seq2) >= 0; |
| 697 | } |
| 698 | |
| 699 | uint32_t |
| 700 | i915_get_gem_seqno(struct drm_device *dev) |
| 701 | { |
| 702 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 703 | |
| 704 | return READ_HWSP(dev_priv, I915_GEM_HWS_INDEX); |
| 705 | } |
| 706 | |
| 707 | /** |
| 708 | * This function clears the request list as sequence numbers are passed. |
| 709 | */ |
| 710 | void |
| 711 | i915_gem_retire_requests(struct drm_device *dev) |
| 712 | { |
| 713 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 714 | uint32_t seqno; |
| 715 | |
| 716 | seqno = i915_get_gem_seqno(dev); |
| 717 | |
| 718 | while (!list_empty(&dev_priv->mm.request_list)) { |
| 719 | struct drm_i915_gem_request *request; |
| 720 | uint32_t retiring_seqno; |
| 721 | |
| 722 | request = list_first_entry(&dev_priv->mm.request_list, |
| 723 | struct drm_i915_gem_request, |
| 724 | list); |
| 725 | retiring_seqno = request->seqno; |
| 726 | |
| 727 | if (i915_seqno_passed(seqno, retiring_seqno) || |
| 728 | dev_priv->mm.wedged) { |
| 729 | i915_gem_retire_request(dev, request); |
| 730 | |
| 731 | list_del(&request->list); |
| 732 | drm_free(request, sizeof(*request), DRM_MEM_DRIVER); |
| 733 | } else |
| 734 | break; |
| 735 | } |
| 736 | } |
| 737 | |
| 738 | void |
| 739 | i915_gem_retire_work_handler(struct work_struct *work) |
| 740 | { |
| 741 | drm_i915_private_t *dev_priv; |
| 742 | struct drm_device *dev; |
| 743 | |
| 744 | dev_priv = container_of(work, drm_i915_private_t, |
| 745 | mm.retire_work.work); |
| 746 | dev = dev_priv->dev; |
| 747 | |
| 748 | mutex_lock(&dev->struct_mutex); |
| 749 | i915_gem_retire_requests(dev); |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 750 | if (!dev_priv->mm.suspended && |
| 751 | !list_empty(&dev_priv->mm.request_list)) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 752 | schedule_delayed_work(&dev_priv->mm.retire_work, HZ); |
| 753 | mutex_unlock(&dev->struct_mutex); |
| 754 | } |
| 755 | |
| 756 | /** |
| 757 | * Waits for a sequence number to be signaled, and cleans up the |
| 758 | * request and object lists appropriately for that event. |
| 759 | */ |
Eric Anholt | 3043c60 | 2008-10-02 12:24:47 -0700 | [diff] [blame] | 760 | static int |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 761 | i915_wait_request(struct drm_device *dev, uint32_t seqno) |
| 762 | { |
| 763 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 764 | int ret = 0; |
| 765 | |
| 766 | BUG_ON(seqno == 0); |
| 767 | |
| 768 | if (!i915_seqno_passed(i915_get_gem_seqno(dev), seqno)) { |
| 769 | dev_priv->mm.waiting_gem_seqno = seqno; |
| 770 | i915_user_irq_get(dev); |
| 771 | ret = wait_event_interruptible(dev_priv->irq_queue, |
| 772 | i915_seqno_passed(i915_get_gem_seqno(dev), |
| 773 | seqno) || |
| 774 | dev_priv->mm.wedged); |
| 775 | i915_user_irq_put(dev); |
| 776 | dev_priv->mm.waiting_gem_seqno = 0; |
| 777 | } |
| 778 | if (dev_priv->mm.wedged) |
| 779 | ret = -EIO; |
| 780 | |
| 781 | if (ret && ret != -ERESTARTSYS) |
| 782 | DRM_ERROR("%s returns %d (awaiting %d at %d)\n", |
| 783 | __func__, ret, seqno, i915_get_gem_seqno(dev)); |
| 784 | |
| 785 | /* Directly dispatch request retiring. While we have the work queue |
| 786 | * to handle this, the waiter on a request often wants an associated |
| 787 | * buffer to have made it to the inactive list, and we would need |
| 788 | * a separate wait queue to handle that. |
| 789 | */ |
| 790 | if (ret == 0) |
| 791 | i915_gem_retire_requests(dev); |
| 792 | |
| 793 | return ret; |
| 794 | } |
| 795 | |
| 796 | static void |
| 797 | i915_gem_flush(struct drm_device *dev, |
| 798 | uint32_t invalidate_domains, |
| 799 | uint32_t flush_domains) |
| 800 | { |
| 801 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 802 | uint32_t cmd; |
| 803 | RING_LOCALS; |
| 804 | |
| 805 | #if WATCH_EXEC |
| 806 | DRM_INFO("%s: invalidate %08x flush %08x\n", __func__, |
| 807 | invalidate_domains, flush_domains); |
| 808 | #endif |
| 809 | |
| 810 | if (flush_domains & I915_GEM_DOMAIN_CPU) |
| 811 | drm_agp_chipset_flush(dev); |
| 812 | |
| 813 | if ((invalidate_domains | flush_domains) & ~(I915_GEM_DOMAIN_CPU | |
| 814 | I915_GEM_DOMAIN_GTT)) { |
| 815 | /* |
| 816 | * read/write caches: |
| 817 | * |
| 818 | * I915_GEM_DOMAIN_RENDER is always invalidated, but is |
| 819 | * only flushed if MI_NO_WRITE_FLUSH is unset. On 965, it is |
| 820 | * also flushed at 2d versus 3d pipeline switches. |
| 821 | * |
| 822 | * read-only caches: |
| 823 | * |
| 824 | * I915_GEM_DOMAIN_SAMPLER is flushed on pre-965 if |
| 825 | * MI_READ_FLUSH is set, and is always flushed on 965. |
| 826 | * |
| 827 | * I915_GEM_DOMAIN_COMMAND may not exist? |
| 828 | * |
| 829 | * I915_GEM_DOMAIN_INSTRUCTION, which exists on 965, is |
| 830 | * invalidated when MI_EXE_FLUSH is set. |
| 831 | * |
| 832 | * I915_GEM_DOMAIN_VERTEX, which exists on 965, is |
| 833 | * invalidated with every MI_FLUSH. |
| 834 | * |
| 835 | * TLBs: |
| 836 | * |
| 837 | * On 965, TLBs associated with I915_GEM_DOMAIN_COMMAND |
| 838 | * and I915_GEM_DOMAIN_CPU in are invalidated at PTE write and |
| 839 | * I915_GEM_DOMAIN_RENDER and I915_GEM_DOMAIN_SAMPLER |
| 840 | * are flushed at any MI_FLUSH. |
| 841 | */ |
| 842 | |
| 843 | cmd = MI_FLUSH | MI_NO_WRITE_FLUSH; |
| 844 | if ((invalidate_domains|flush_domains) & |
| 845 | I915_GEM_DOMAIN_RENDER) |
| 846 | cmd &= ~MI_NO_WRITE_FLUSH; |
| 847 | if (!IS_I965G(dev)) { |
| 848 | /* |
| 849 | * On the 965, the sampler cache always gets flushed |
| 850 | * and this bit is reserved. |
| 851 | */ |
| 852 | if (invalidate_domains & I915_GEM_DOMAIN_SAMPLER) |
| 853 | cmd |= MI_READ_FLUSH; |
| 854 | } |
| 855 | if (invalidate_domains & I915_GEM_DOMAIN_INSTRUCTION) |
| 856 | cmd |= MI_EXE_FLUSH; |
| 857 | |
| 858 | #if WATCH_EXEC |
| 859 | DRM_INFO("%s: queue flush %08x to ring\n", __func__, cmd); |
| 860 | #endif |
| 861 | BEGIN_LP_RING(2); |
| 862 | OUT_RING(cmd); |
| 863 | OUT_RING(0); /* noop */ |
| 864 | ADVANCE_LP_RING(); |
| 865 | } |
| 866 | } |
| 867 | |
| 868 | /** |
| 869 | * Ensures that all rendering to the object has completed and the object is |
| 870 | * safe to unbind from the GTT or access from the CPU. |
| 871 | */ |
| 872 | static int |
| 873 | i915_gem_object_wait_rendering(struct drm_gem_object *obj) |
| 874 | { |
| 875 | struct drm_device *dev = obj->dev; |
| 876 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 877 | int ret; |
| 878 | |
| 879 | /* If there are writes queued to the buffer, flush and |
| 880 | * create a new seqno to wait for. |
| 881 | */ |
| 882 | if (obj->write_domain & ~(I915_GEM_DOMAIN_CPU|I915_GEM_DOMAIN_GTT)) { |
| 883 | uint32_t write_domain = obj->write_domain; |
| 884 | #if WATCH_BUF |
| 885 | DRM_INFO("%s: flushing object %p from write domain %08x\n", |
| 886 | __func__, obj, write_domain); |
| 887 | #endif |
| 888 | i915_gem_flush(dev, 0, write_domain); |
| 889 | |
| 890 | i915_gem_object_move_to_active(obj); |
| 891 | obj_priv->last_rendering_seqno = i915_add_request(dev, |
| 892 | write_domain); |
| 893 | BUG_ON(obj_priv->last_rendering_seqno == 0); |
| 894 | #if WATCH_LRU |
| 895 | DRM_INFO("%s: flush moves to exec list %p\n", __func__, obj); |
| 896 | #endif |
| 897 | } |
| 898 | |
| 899 | /* If there is rendering queued on the buffer being evicted, wait for |
| 900 | * it. |
| 901 | */ |
| 902 | if (obj_priv->active) { |
| 903 | #if WATCH_BUF |
| 904 | DRM_INFO("%s: object %p wait for seqno %08x\n", |
| 905 | __func__, obj, obj_priv->last_rendering_seqno); |
| 906 | #endif |
| 907 | ret = i915_wait_request(dev, obj_priv->last_rendering_seqno); |
| 908 | if (ret != 0) |
| 909 | return ret; |
| 910 | } |
| 911 | |
| 912 | return 0; |
| 913 | } |
| 914 | |
| 915 | /** |
| 916 | * Unbinds an object from the GTT aperture. |
| 917 | */ |
| 918 | static int |
| 919 | i915_gem_object_unbind(struct drm_gem_object *obj) |
| 920 | { |
| 921 | struct drm_device *dev = obj->dev; |
| 922 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 923 | int ret = 0; |
| 924 | |
| 925 | #if WATCH_BUF |
| 926 | DRM_INFO("%s:%d %p\n", __func__, __LINE__, obj); |
| 927 | DRM_INFO("gtt_space %p\n", obj_priv->gtt_space); |
| 928 | #endif |
| 929 | if (obj_priv->gtt_space == NULL) |
| 930 | return 0; |
| 931 | |
| 932 | if (obj_priv->pin_count != 0) { |
| 933 | DRM_ERROR("Attempting to unbind pinned buffer\n"); |
| 934 | return -EINVAL; |
| 935 | } |
| 936 | |
| 937 | /* Wait for any rendering to complete |
| 938 | */ |
| 939 | ret = i915_gem_object_wait_rendering(obj); |
| 940 | if (ret) { |
| 941 | DRM_ERROR("wait_rendering failed: %d\n", ret); |
| 942 | return ret; |
| 943 | } |
| 944 | |
| 945 | /* Move the object to the CPU domain to ensure that |
| 946 | * any possible CPU writes while it's not in the GTT |
| 947 | * are flushed when we go to remap it. This will |
| 948 | * also ensure that all pending GPU writes are finished |
| 949 | * before we unbind. |
| 950 | */ |
| 951 | ret = i915_gem_object_set_domain(obj, I915_GEM_DOMAIN_CPU, |
| 952 | I915_GEM_DOMAIN_CPU); |
| 953 | if (ret) { |
| 954 | DRM_ERROR("set_domain failed: %d\n", ret); |
| 955 | return ret; |
| 956 | } |
| 957 | |
| 958 | if (obj_priv->agp_mem != NULL) { |
| 959 | drm_unbind_agp(obj_priv->agp_mem); |
| 960 | drm_free_agp(obj_priv->agp_mem, obj->size / PAGE_SIZE); |
| 961 | obj_priv->agp_mem = NULL; |
| 962 | } |
| 963 | |
| 964 | BUG_ON(obj_priv->active); |
| 965 | |
| 966 | i915_gem_object_free_page_list(obj); |
| 967 | |
| 968 | if (obj_priv->gtt_space) { |
| 969 | atomic_dec(&dev->gtt_count); |
| 970 | atomic_sub(obj->size, &dev->gtt_memory); |
| 971 | |
| 972 | drm_mm_put_block(obj_priv->gtt_space); |
| 973 | obj_priv->gtt_space = NULL; |
| 974 | } |
| 975 | |
| 976 | /* Remove ourselves from the LRU list if present. */ |
| 977 | if (!list_empty(&obj_priv->list)) |
| 978 | list_del_init(&obj_priv->list); |
| 979 | |
| 980 | return 0; |
| 981 | } |
| 982 | |
| 983 | static int |
| 984 | i915_gem_evict_something(struct drm_device *dev) |
| 985 | { |
| 986 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 987 | struct drm_gem_object *obj; |
| 988 | struct drm_i915_gem_object *obj_priv; |
| 989 | int ret = 0; |
| 990 | |
| 991 | for (;;) { |
| 992 | /* If there's an inactive buffer available now, grab it |
| 993 | * and be done. |
| 994 | */ |
| 995 | if (!list_empty(&dev_priv->mm.inactive_list)) { |
| 996 | obj_priv = list_first_entry(&dev_priv->mm.inactive_list, |
| 997 | struct drm_i915_gem_object, |
| 998 | list); |
| 999 | obj = obj_priv->obj; |
| 1000 | BUG_ON(obj_priv->pin_count != 0); |
| 1001 | #if WATCH_LRU |
| 1002 | DRM_INFO("%s: evicting %p\n", __func__, obj); |
| 1003 | #endif |
| 1004 | BUG_ON(obj_priv->active); |
| 1005 | |
| 1006 | /* Wait on the rendering and unbind the buffer. */ |
| 1007 | ret = i915_gem_object_unbind(obj); |
| 1008 | break; |
| 1009 | } |
| 1010 | |
| 1011 | /* If we didn't get anything, but the ring is still processing |
| 1012 | * things, wait for one of those things to finish and hopefully |
| 1013 | * leave us a buffer to evict. |
| 1014 | */ |
| 1015 | if (!list_empty(&dev_priv->mm.request_list)) { |
| 1016 | struct drm_i915_gem_request *request; |
| 1017 | |
| 1018 | request = list_first_entry(&dev_priv->mm.request_list, |
| 1019 | struct drm_i915_gem_request, |
| 1020 | list); |
| 1021 | |
| 1022 | ret = i915_wait_request(dev, request->seqno); |
| 1023 | if (ret) |
| 1024 | break; |
| 1025 | |
| 1026 | /* if waiting caused an object to become inactive, |
| 1027 | * then loop around and wait for it. Otherwise, we |
| 1028 | * assume that waiting freed and unbound something, |
| 1029 | * so there should now be some space in the GTT |
| 1030 | */ |
| 1031 | if (!list_empty(&dev_priv->mm.inactive_list)) |
| 1032 | continue; |
| 1033 | break; |
| 1034 | } |
| 1035 | |
| 1036 | /* If we didn't have anything on the request list but there |
| 1037 | * are buffers awaiting a flush, emit one and try again. |
| 1038 | * When we wait on it, those buffers waiting for that flush |
| 1039 | * will get moved to inactive. |
| 1040 | */ |
| 1041 | if (!list_empty(&dev_priv->mm.flushing_list)) { |
| 1042 | obj_priv = list_first_entry(&dev_priv->mm.flushing_list, |
| 1043 | struct drm_i915_gem_object, |
| 1044 | list); |
| 1045 | obj = obj_priv->obj; |
| 1046 | |
| 1047 | i915_gem_flush(dev, |
| 1048 | obj->write_domain, |
| 1049 | obj->write_domain); |
| 1050 | i915_add_request(dev, obj->write_domain); |
| 1051 | |
| 1052 | obj = NULL; |
| 1053 | continue; |
| 1054 | } |
| 1055 | |
| 1056 | DRM_ERROR("inactive empty %d request empty %d " |
| 1057 | "flushing empty %d\n", |
| 1058 | list_empty(&dev_priv->mm.inactive_list), |
| 1059 | list_empty(&dev_priv->mm.request_list), |
| 1060 | list_empty(&dev_priv->mm.flushing_list)); |
| 1061 | /* If we didn't do any of the above, there's nothing to be done |
| 1062 | * and we just can't fit it in. |
| 1063 | */ |
| 1064 | return -ENOMEM; |
| 1065 | } |
| 1066 | return ret; |
| 1067 | } |
| 1068 | |
| 1069 | static int |
| 1070 | i915_gem_object_get_page_list(struct drm_gem_object *obj) |
| 1071 | { |
| 1072 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 1073 | int page_count, i; |
| 1074 | struct address_space *mapping; |
| 1075 | struct inode *inode; |
| 1076 | struct page *page; |
| 1077 | int ret; |
| 1078 | |
| 1079 | if (obj_priv->page_list) |
| 1080 | return 0; |
| 1081 | |
| 1082 | /* Get the list of pages out of our struct file. They'll be pinned |
| 1083 | * at this point until we release them. |
| 1084 | */ |
| 1085 | page_count = obj->size / PAGE_SIZE; |
| 1086 | BUG_ON(obj_priv->page_list != NULL); |
| 1087 | obj_priv->page_list = drm_calloc(page_count, sizeof(struct page *), |
| 1088 | DRM_MEM_DRIVER); |
| 1089 | if (obj_priv->page_list == NULL) { |
| 1090 | DRM_ERROR("Faled to allocate page list\n"); |
| 1091 | return -ENOMEM; |
| 1092 | } |
| 1093 | |
| 1094 | inode = obj->filp->f_path.dentry->d_inode; |
| 1095 | mapping = inode->i_mapping; |
| 1096 | for (i = 0; i < page_count; i++) { |
| 1097 | page = read_mapping_page(mapping, i, NULL); |
| 1098 | if (IS_ERR(page)) { |
| 1099 | ret = PTR_ERR(page); |
| 1100 | DRM_ERROR("read_mapping_page failed: %d\n", ret); |
| 1101 | i915_gem_object_free_page_list(obj); |
| 1102 | return ret; |
| 1103 | } |
| 1104 | obj_priv->page_list[i] = page; |
| 1105 | } |
| 1106 | return 0; |
| 1107 | } |
| 1108 | |
| 1109 | /** |
| 1110 | * Finds free space in the GTT aperture and binds the object there. |
| 1111 | */ |
| 1112 | static int |
| 1113 | i915_gem_object_bind_to_gtt(struct drm_gem_object *obj, unsigned alignment) |
| 1114 | { |
| 1115 | struct drm_device *dev = obj->dev; |
| 1116 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 1117 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 1118 | struct drm_mm_node *free_space; |
| 1119 | int page_count, ret; |
| 1120 | |
| 1121 | if (alignment == 0) |
| 1122 | alignment = PAGE_SIZE; |
| 1123 | if (alignment & (PAGE_SIZE - 1)) { |
| 1124 | DRM_ERROR("Invalid object alignment requested %u\n", alignment); |
| 1125 | return -EINVAL; |
| 1126 | } |
| 1127 | |
| 1128 | search_free: |
| 1129 | free_space = drm_mm_search_free(&dev_priv->mm.gtt_space, |
| 1130 | obj->size, alignment, 0); |
| 1131 | if (free_space != NULL) { |
| 1132 | obj_priv->gtt_space = drm_mm_get_block(free_space, obj->size, |
| 1133 | alignment); |
| 1134 | if (obj_priv->gtt_space != NULL) { |
| 1135 | obj_priv->gtt_space->private = obj; |
| 1136 | obj_priv->gtt_offset = obj_priv->gtt_space->start; |
| 1137 | } |
| 1138 | } |
| 1139 | if (obj_priv->gtt_space == NULL) { |
| 1140 | /* If the gtt is empty and we're still having trouble |
| 1141 | * fitting our object in, we're out of memory. |
| 1142 | */ |
| 1143 | #if WATCH_LRU |
| 1144 | DRM_INFO("%s: GTT full, evicting something\n", __func__); |
| 1145 | #endif |
| 1146 | if (list_empty(&dev_priv->mm.inactive_list) && |
| 1147 | list_empty(&dev_priv->mm.flushing_list) && |
| 1148 | list_empty(&dev_priv->mm.active_list)) { |
| 1149 | DRM_ERROR("GTT full, but LRU list empty\n"); |
| 1150 | return -ENOMEM; |
| 1151 | } |
| 1152 | |
| 1153 | ret = i915_gem_evict_something(dev); |
| 1154 | if (ret != 0) { |
| 1155 | DRM_ERROR("Failed to evict a buffer %d\n", ret); |
| 1156 | return ret; |
| 1157 | } |
| 1158 | goto search_free; |
| 1159 | } |
| 1160 | |
| 1161 | #if WATCH_BUF |
| 1162 | DRM_INFO("Binding object of size %d at 0x%08x\n", |
| 1163 | obj->size, obj_priv->gtt_offset); |
| 1164 | #endif |
| 1165 | ret = i915_gem_object_get_page_list(obj); |
| 1166 | if (ret) { |
| 1167 | drm_mm_put_block(obj_priv->gtt_space); |
| 1168 | obj_priv->gtt_space = NULL; |
| 1169 | return ret; |
| 1170 | } |
| 1171 | |
| 1172 | page_count = obj->size / PAGE_SIZE; |
| 1173 | /* Create an AGP memory structure pointing at our pages, and bind it |
| 1174 | * into the GTT. |
| 1175 | */ |
| 1176 | obj_priv->agp_mem = drm_agp_bind_pages(dev, |
| 1177 | obj_priv->page_list, |
| 1178 | page_count, |
Keith Packard | ba1eb1d | 2008-10-14 19:55:10 -0700 | [diff] [blame] | 1179 | obj_priv->gtt_offset, |
| 1180 | obj_priv->agp_type); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1181 | if (obj_priv->agp_mem == NULL) { |
| 1182 | i915_gem_object_free_page_list(obj); |
| 1183 | drm_mm_put_block(obj_priv->gtt_space); |
| 1184 | obj_priv->gtt_space = NULL; |
| 1185 | return -ENOMEM; |
| 1186 | } |
| 1187 | atomic_inc(&dev->gtt_count); |
| 1188 | atomic_add(obj->size, &dev->gtt_memory); |
| 1189 | |
| 1190 | /* Assert that the object is not currently in any GPU domain. As it |
| 1191 | * wasn't in the GTT, there shouldn't be any way it could have been in |
| 1192 | * a GPU cache |
| 1193 | */ |
| 1194 | BUG_ON(obj->read_domains & ~(I915_GEM_DOMAIN_CPU|I915_GEM_DOMAIN_GTT)); |
| 1195 | BUG_ON(obj->write_domain & ~(I915_GEM_DOMAIN_CPU|I915_GEM_DOMAIN_GTT)); |
| 1196 | |
| 1197 | return 0; |
| 1198 | } |
| 1199 | |
| 1200 | void |
| 1201 | i915_gem_clflush_object(struct drm_gem_object *obj) |
| 1202 | { |
| 1203 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 1204 | |
| 1205 | /* If we don't have a page list set up, then we're not pinned |
| 1206 | * to GPU, and we can ignore the cache flush because it'll happen |
| 1207 | * again at bind time. |
| 1208 | */ |
| 1209 | if (obj_priv->page_list == NULL) |
| 1210 | return; |
| 1211 | |
| 1212 | drm_clflush_pages(obj_priv->page_list, obj->size / PAGE_SIZE); |
| 1213 | } |
| 1214 | |
| 1215 | /* |
| 1216 | * Set the next domain for the specified object. This |
| 1217 | * may not actually perform the necessary flushing/invaliding though, |
| 1218 | * as that may want to be batched with other set_domain operations |
| 1219 | * |
| 1220 | * This is (we hope) the only really tricky part of gem. The goal |
| 1221 | * is fairly simple -- track which caches hold bits of the object |
| 1222 | * and make sure they remain coherent. A few concrete examples may |
| 1223 | * help to explain how it works. For shorthand, we use the notation |
| 1224 | * (read_domains, write_domain), e.g. (CPU, CPU) to indicate the |
| 1225 | * a pair of read and write domain masks. |
| 1226 | * |
| 1227 | * Case 1: the batch buffer |
| 1228 | * |
| 1229 | * 1. Allocated |
| 1230 | * 2. Written by CPU |
| 1231 | * 3. Mapped to GTT |
| 1232 | * 4. Read by GPU |
| 1233 | * 5. Unmapped from GTT |
| 1234 | * 6. Freed |
| 1235 | * |
| 1236 | * Let's take these a step at a time |
| 1237 | * |
| 1238 | * 1. Allocated |
| 1239 | * Pages allocated from the kernel may still have |
| 1240 | * cache contents, so we set them to (CPU, CPU) always. |
| 1241 | * 2. Written by CPU (using pwrite) |
| 1242 | * The pwrite function calls set_domain (CPU, CPU) and |
| 1243 | * this function does nothing (as nothing changes) |
| 1244 | * 3. Mapped by GTT |
| 1245 | * This function asserts that the object is not |
| 1246 | * currently in any GPU-based read or write domains |
| 1247 | * 4. Read by GPU |
| 1248 | * i915_gem_execbuffer calls set_domain (COMMAND, 0). |
| 1249 | * As write_domain is zero, this function adds in the |
| 1250 | * current read domains (CPU+COMMAND, 0). |
| 1251 | * flush_domains is set to CPU. |
| 1252 | * invalidate_domains is set to COMMAND |
| 1253 | * clflush is run to get data out of the CPU caches |
| 1254 | * then i915_dev_set_domain calls i915_gem_flush to |
| 1255 | * emit an MI_FLUSH and drm_agp_chipset_flush |
| 1256 | * 5. Unmapped from GTT |
| 1257 | * i915_gem_object_unbind calls set_domain (CPU, CPU) |
| 1258 | * flush_domains and invalidate_domains end up both zero |
| 1259 | * so no flushing/invalidating happens |
| 1260 | * 6. Freed |
| 1261 | * yay, done |
| 1262 | * |
| 1263 | * Case 2: The shared render buffer |
| 1264 | * |
| 1265 | * 1. Allocated |
| 1266 | * 2. Mapped to GTT |
| 1267 | * 3. Read/written by GPU |
| 1268 | * 4. set_domain to (CPU,CPU) |
| 1269 | * 5. Read/written by CPU |
| 1270 | * 6. Read/written by GPU |
| 1271 | * |
| 1272 | * 1. Allocated |
| 1273 | * Same as last example, (CPU, CPU) |
| 1274 | * 2. Mapped to GTT |
| 1275 | * Nothing changes (assertions find that it is not in the GPU) |
| 1276 | * 3. Read/written by GPU |
| 1277 | * execbuffer calls set_domain (RENDER, RENDER) |
| 1278 | * flush_domains gets CPU |
| 1279 | * invalidate_domains gets GPU |
| 1280 | * clflush (obj) |
| 1281 | * MI_FLUSH and drm_agp_chipset_flush |
| 1282 | * 4. set_domain (CPU, CPU) |
| 1283 | * flush_domains gets GPU |
| 1284 | * invalidate_domains gets CPU |
| 1285 | * wait_rendering (obj) to make sure all drawing is complete. |
| 1286 | * This will include an MI_FLUSH to get the data from GPU |
| 1287 | * to memory |
| 1288 | * clflush (obj) to invalidate the CPU cache |
| 1289 | * Another MI_FLUSH in i915_gem_flush (eliminate this somehow?) |
| 1290 | * 5. Read/written by CPU |
| 1291 | * cache lines are loaded and dirtied |
| 1292 | * 6. Read written by GPU |
| 1293 | * Same as last GPU access |
| 1294 | * |
| 1295 | * Case 3: The constant buffer |
| 1296 | * |
| 1297 | * 1. Allocated |
| 1298 | * 2. Written by CPU |
| 1299 | * 3. Read by GPU |
| 1300 | * 4. Updated (written) by CPU again |
| 1301 | * 5. Read by GPU |
| 1302 | * |
| 1303 | * 1. Allocated |
| 1304 | * (CPU, CPU) |
| 1305 | * 2. Written by CPU |
| 1306 | * (CPU, CPU) |
| 1307 | * 3. Read by GPU |
| 1308 | * (CPU+RENDER, 0) |
| 1309 | * flush_domains = CPU |
| 1310 | * invalidate_domains = RENDER |
| 1311 | * clflush (obj) |
| 1312 | * MI_FLUSH |
| 1313 | * drm_agp_chipset_flush |
| 1314 | * 4. Updated (written) by CPU again |
| 1315 | * (CPU, CPU) |
| 1316 | * flush_domains = 0 (no previous write domain) |
| 1317 | * invalidate_domains = 0 (no new read domains) |
| 1318 | * 5. Read by GPU |
| 1319 | * (CPU+RENDER, 0) |
| 1320 | * flush_domains = CPU |
| 1321 | * invalidate_domains = RENDER |
| 1322 | * clflush (obj) |
| 1323 | * MI_FLUSH |
| 1324 | * drm_agp_chipset_flush |
| 1325 | */ |
| 1326 | static int |
| 1327 | i915_gem_object_set_domain(struct drm_gem_object *obj, |
| 1328 | uint32_t read_domains, |
| 1329 | uint32_t write_domain) |
| 1330 | { |
| 1331 | struct drm_device *dev = obj->dev; |
| 1332 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 1333 | uint32_t invalidate_domains = 0; |
| 1334 | uint32_t flush_domains = 0; |
| 1335 | int ret; |
| 1336 | |
| 1337 | #if WATCH_BUF |
| 1338 | DRM_INFO("%s: object %p read %08x -> %08x write %08x -> %08x\n", |
| 1339 | __func__, obj, |
| 1340 | obj->read_domains, read_domains, |
| 1341 | obj->write_domain, write_domain); |
| 1342 | #endif |
| 1343 | /* |
| 1344 | * If the object isn't moving to a new write domain, |
| 1345 | * let the object stay in multiple read domains |
| 1346 | */ |
| 1347 | if (write_domain == 0) |
| 1348 | read_domains |= obj->read_domains; |
| 1349 | else |
| 1350 | obj_priv->dirty = 1; |
| 1351 | |
| 1352 | /* |
| 1353 | * Flush the current write domain if |
| 1354 | * the new read domains don't match. Invalidate |
| 1355 | * any read domains which differ from the old |
| 1356 | * write domain |
| 1357 | */ |
| 1358 | if (obj->write_domain && obj->write_domain != read_domains) { |
| 1359 | flush_domains |= obj->write_domain; |
| 1360 | invalidate_domains |= read_domains & ~obj->write_domain; |
| 1361 | } |
| 1362 | /* |
| 1363 | * Invalidate any read caches which may have |
| 1364 | * stale data. That is, any new read domains. |
| 1365 | */ |
| 1366 | invalidate_domains |= read_domains & ~obj->read_domains; |
| 1367 | if ((flush_domains | invalidate_domains) & I915_GEM_DOMAIN_CPU) { |
| 1368 | #if WATCH_BUF |
| 1369 | DRM_INFO("%s: CPU domain flush %08x invalidate %08x\n", |
| 1370 | __func__, flush_domains, invalidate_domains); |
| 1371 | #endif |
| 1372 | /* |
| 1373 | * If we're invaliding the CPU cache and flushing a GPU cache, |
| 1374 | * then pause for rendering so that the GPU caches will be |
| 1375 | * flushed before the cpu cache is invalidated |
| 1376 | */ |
| 1377 | if ((invalidate_domains & I915_GEM_DOMAIN_CPU) && |
| 1378 | (flush_domains & ~(I915_GEM_DOMAIN_CPU | |
| 1379 | I915_GEM_DOMAIN_GTT))) { |
| 1380 | ret = i915_gem_object_wait_rendering(obj); |
| 1381 | if (ret) |
| 1382 | return ret; |
| 1383 | } |
| 1384 | i915_gem_clflush_object(obj); |
| 1385 | } |
| 1386 | |
| 1387 | if ((write_domain | flush_domains) != 0) |
| 1388 | obj->write_domain = write_domain; |
| 1389 | |
| 1390 | /* If we're invalidating the CPU domain, clear the per-page CPU |
| 1391 | * domain list as well. |
| 1392 | */ |
| 1393 | if (obj_priv->page_cpu_valid != NULL && |
| 1394 | (write_domain != 0 || |
| 1395 | read_domains & I915_GEM_DOMAIN_CPU)) { |
| 1396 | drm_free(obj_priv->page_cpu_valid, obj->size / PAGE_SIZE, |
| 1397 | DRM_MEM_DRIVER); |
| 1398 | obj_priv->page_cpu_valid = NULL; |
| 1399 | } |
| 1400 | obj->read_domains = read_domains; |
| 1401 | |
| 1402 | dev->invalidate_domains |= invalidate_domains; |
| 1403 | dev->flush_domains |= flush_domains; |
| 1404 | #if WATCH_BUF |
| 1405 | DRM_INFO("%s: read %08x write %08x invalidate %08x flush %08x\n", |
| 1406 | __func__, |
| 1407 | obj->read_domains, obj->write_domain, |
| 1408 | dev->invalidate_domains, dev->flush_domains); |
| 1409 | #endif |
| 1410 | return 0; |
| 1411 | } |
| 1412 | |
| 1413 | /** |
| 1414 | * Set the read/write domain on a range of the object. |
| 1415 | * |
| 1416 | * Currently only implemented for CPU reads, otherwise drops to normal |
| 1417 | * i915_gem_object_set_domain(). |
| 1418 | */ |
| 1419 | static int |
| 1420 | i915_gem_object_set_domain_range(struct drm_gem_object *obj, |
| 1421 | uint64_t offset, |
| 1422 | uint64_t size, |
| 1423 | uint32_t read_domains, |
| 1424 | uint32_t write_domain) |
| 1425 | { |
| 1426 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 1427 | int ret, i; |
| 1428 | |
| 1429 | if (obj->read_domains & I915_GEM_DOMAIN_CPU) |
| 1430 | return 0; |
| 1431 | |
| 1432 | if (read_domains != I915_GEM_DOMAIN_CPU || |
| 1433 | write_domain != 0) |
| 1434 | return i915_gem_object_set_domain(obj, |
| 1435 | read_domains, write_domain); |
| 1436 | |
| 1437 | /* Wait on any GPU rendering to the object to be flushed. */ |
| 1438 | if (obj->write_domain & ~(I915_GEM_DOMAIN_CPU | I915_GEM_DOMAIN_GTT)) { |
| 1439 | ret = i915_gem_object_wait_rendering(obj); |
| 1440 | if (ret) |
| 1441 | return ret; |
| 1442 | } |
| 1443 | |
| 1444 | if (obj_priv->page_cpu_valid == NULL) { |
| 1445 | obj_priv->page_cpu_valid = drm_calloc(1, obj->size / PAGE_SIZE, |
| 1446 | DRM_MEM_DRIVER); |
| 1447 | } |
| 1448 | |
| 1449 | /* Flush the cache on any pages that are still invalid from the CPU's |
| 1450 | * perspective. |
| 1451 | */ |
| 1452 | for (i = offset / PAGE_SIZE; i <= (offset + size - 1) / PAGE_SIZE; i++) { |
| 1453 | if (obj_priv->page_cpu_valid[i]) |
| 1454 | continue; |
| 1455 | |
| 1456 | drm_clflush_pages(obj_priv->page_list + i, 1); |
| 1457 | |
| 1458 | obj_priv->page_cpu_valid[i] = 1; |
| 1459 | } |
| 1460 | |
| 1461 | return 0; |
| 1462 | } |
| 1463 | |
| 1464 | /** |
| 1465 | * Once all of the objects have been set in the proper domain, |
| 1466 | * perform the necessary flush and invalidate operations. |
| 1467 | * |
| 1468 | * Returns the write domains flushed, for use in flush tracking. |
| 1469 | */ |
| 1470 | static uint32_t |
| 1471 | i915_gem_dev_set_domain(struct drm_device *dev) |
| 1472 | { |
| 1473 | uint32_t flush_domains = dev->flush_domains; |
| 1474 | |
| 1475 | /* |
| 1476 | * Now that all the buffers are synced to the proper domains, |
| 1477 | * flush and invalidate the collected domains |
| 1478 | */ |
| 1479 | if (dev->invalidate_domains | dev->flush_domains) { |
| 1480 | #if WATCH_EXEC |
| 1481 | DRM_INFO("%s: invalidate_domains %08x flush_domains %08x\n", |
| 1482 | __func__, |
| 1483 | dev->invalidate_domains, |
| 1484 | dev->flush_domains); |
| 1485 | #endif |
| 1486 | i915_gem_flush(dev, |
| 1487 | dev->invalidate_domains, |
| 1488 | dev->flush_domains); |
| 1489 | dev->invalidate_domains = 0; |
| 1490 | dev->flush_domains = 0; |
| 1491 | } |
| 1492 | |
| 1493 | return flush_domains; |
| 1494 | } |
| 1495 | |
| 1496 | /** |
| 1497 | * Pin an object to the GTT and evaluate the relocations landing in it. |
| 1498 | */ |
| 1499 | static int |
| 1500 | i915_gem_object_pin_and_relocate(struct drm_gem_object *obj, |
| 1501 | struct drm_file *file_priv, |
| 1502 | struct drm_i915_gem_exec_object *entry) |
| 1503 | { |
| 1504 | struct drm_device *dev = obj->dev; |
| 1505 | struct drm_i915_gem_relocation_entry reloc; |
| 1506 | struct drm_i915_gem_relocation_entry __user *relocs; |
| 1507 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 1508 | int i, ret; |
| 1509 | uint32_t last_reloc_offset = -1; |
Eric Anholt | 3043c60 | 2008-10-02 12:24:47 -0700 | [diff] [blame] | 1510 | void __iomem *reloc_page = NULL; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1511 | |
| 1512 | /* Choose the GTT offset for our buffer and put it there. */ |
| 1513 | ret = i915_gem_object_pin(obj, (uint32_t) entry->alignment); |
| 1514 | if (ret) |
| 1515 | return ret; |
| 1516 | |
| 1517 | entry->offset = obj_priv->gtt_offset; |
| 1518 | |
| 1519 | relocs = (struct drm_i915_gem_relocation_entry __user *) |
| 1520 | (uintptr_t) entry->relocs_ptr; |
| 1521 | /* Apply the relocations, using the GTT aperture to avoid cache |
| 1522 | * flushing requirements. |
| 1523 | */ |
| 1524 | for (i = 0; i < entry->relocation_count; i++) { |
| 1525 | struct drm_gem_object *target_obj; |
| 1526 | struct drm_i915_gem_object *target_obj_priv; |
Eric Anholt | 3043c60 | 2008-10-02 12:24:47 -0700 | [diff] [blame] | 1527 | uint32_t reloc_val, reloc_offset; |
| 1528 | uint32_t __iomem *reloc_entry; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1529 | |
| 1530 | ret = copy_from_user(&reloc, relocs + i, sizeof(reloc)); |
| 1531 | if (ret != 0) { |
| 1532 | i915_gem_object_unpin(obj); |
| 1533 | return ret; |
| 1534 | } |
| 1535 | |
| 1536 | target_obj = drm_gem_object_lookup(obj->dev, file_priv, |
| 1537 | reloc.target_handle); |
| 1538 | if (target_obj == NULL) { |
| 1539 | i915_gem_object_unpin(obj); |
| 1540 | return -EBADF; |
| 1541 | } |
| 1542 | target_obj_priv = target_obj->driver_private; |
| 1543 | |
| 1544 | /* The target buffer should have appeared before us in the |
| 1545 | * exec_object list, so it should have a GTT space bound by now. |
| 1546 | */ |
| 1547 | if (target_obj_priv->gtt_space == NULL) { |
| 1548 | DRM_ERROR("No GTT space found for object %d\n", |
| 1549 | reloc.target_handle); |
| 1550 | drm_gem_object_unreference(target_obj); |
| 1551 | i915_gem_object_unpin(obj); |
| 1552 | return -EINVAL; |
| 1553 | } |
| 1554 | |
| 1555 | if (reloc.offset > obj->size - 4) { |
| 1556 | DRM_ERROR("Relocation beyond object bounds: " |
| 1557 | "obj %p target %d offset %d size %d.\n", |
| 1558 | obj, reloc.target_handle, |
| 1559 | (int) reloc.offset, (int) obj->size); |
| 1560 | drm_gem_object_unreference(target_obj); |
| 1561 | i915_gem_object_unpin(obj); |
| 1562 | return -EINVAL; |
| 1563 | } |
| 1564 | if (reloc.offset & 3) { |
| 1565 | DRM_ERROR("Relocation not 4-byte aligned: " |
| 1566 | "obj %p target %d offset %d.\n", |
| 1567 | obj, reloc.target_handle, |
| 1568 | (int) reloc.offset); |
| 1569 | drm_gem_object_unreference(target_obj); |
| 1570 | i915_gem_object_unpin(obj); |
| 1571 | return -EINVAL; |
| 1572 | } |
| 1573 | |
| 1574 | if (reloc.write_domain && target_obj->pending_write_domain && |
| 1575 | reloc.write_domain != target_obj->pending_write_domain) { |
| 1576 | DRM_ERROR("Write domain conflict: " |
| 1577 | "obj %p target %d offset %d " |
| 1578 | "new %08x old %08x\n", |
| 1579 | obj, reloc.target_handle, |
| 1580 | (int) reloc.offset, |
| 1581 | reloc.write_domain, |
| 1582 | target_obj->pending_write_domain); |
| 1583 | drm_gem_object_unreference(target_obj); |
| 1584 | i915_gem_object_unpin(obj); |
| 1585 | return -EINVAL; |
| 1586 | } |
| 1587 | |
| 1588 | #if WATCH_RELOC |
| 1589 | DRM_INFO("%s: obj %p offset %08x target %d " |
| 1590 | "read %08x write %08x gtt %08x " |
| 1591 | "presumed %08x delta %08x\n", |
| 1592 | __func__, |
| 1593 | obj, |
| 1594 | (int) reloc.offset, |
| 1595 | (int) reloc.target_handle, |
| 1596 | (int) reloc.read_domains, |
| 1597 | (int) reloc.write_domain, |
| 1598 | (int) target_obj_priv->gtt_offset, |
| 1599 | (int) reloc.presumed_offset, |
| 1600 | reloc.delta); |
| 1601 | #endif |
| 1602 | |
| 1603 | target_obj->pending_read_domains |= reloc.read_domains; |
| 1604 | target_obj->pending_write_domain |= reloc.write_domain; |
| 1605 | |
| 1606 | /* If the relocation already has the right value in it, no |
| 1607 | * more work needs to be done. |
| 1608 | */ |
| 1609 | if (target_obj_priv->gtt_offset == reloc.presumed_offset) { |
| 1610 | drm_gem_object_unreference(target_obj); |
| 1611 | continue; |
| 1612 | } |
| 1613 | |
| 1614 | /* Now that we're going to actually write some data in, |
| 1615 | * make sure that any rendering using this buffer's contents |
| 1616 | * is completed. |
| 1617 | */ |
| 1618 | i915_gem_object_wait_rendering(obj); |
| 1619 | |
| 1620 | /* As we're writing through the gtt, flush |
| 1621 | * any CPU writes before we write the relocations |
| 1622 | */ |
| 1623 | if (obj->write_domain & I915_GEM_DOMAIN_CPU) { |
| 1624 | i915_gem_clflush_object(obj); |
| 1625 | drm_agp_chipset_flush(dev); |
| 1626 | obj->write_domain = 0; |
| 1627 | } |
| 1628 | |
| 1629 | /* Map the page containing the relocation we're going to |
| 1630 | * perform. |
| 1631 | */ |
| 1632 | reloc_offset = obj_priv->gtt_offset + reloc.offset; |
| 1633 | if (reloc_page == NULL || |
| 1634 | (last_reloc_offset & ~(PAGE_SIZE - 1)) != |
| 1635 | (reloc_offset & ~(PAGE_SIZE - 1))) { |
| 1636 | if (reloc_page != NULL) |
| 1637 | iounmap(reloc_page); |
| 1638 | |
Eric Anholt | bd88ee4 | 2008-09-23 14:50:57 -0700 | [diff] [blame] | 1639 | reloc_page = ioremap_wc(dev->agp->base + |
| 1640 | (reloc_offset & |
| 1641 | ~(PAGE_SIZE - 1)), |
| 1642 | PAGE_SIZE); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1643 | last_reloc_offset = reloc_offset; |
| 1644 | if (reloc_page == NULL) { |
| 1645 | drm_gem_object_unreference(target_obj); |
| 1646 | i915_gem_object_unpin(obj); |
| 1647 | return -ENOMEM; |
| 1648 | } |
| 1649 | } |
| 1650 | |
Eric Anholt | 3043c60 | 2008-10-02 12:24:47 -0700 | [diff] [blame] | 1651 | reloc_entry = (uint32_t __iomem *)(reloc_page + |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1652 | (reloc_offset & (PAGE_SIZE - 1))); |
| 1653 | reloc_val = target_obj_priv->gtt_offset + reloc.delta; |
| 1654 | |
| 1655 | #if WATCH_BUF |
| 1656 | DRM_INFO("Applied relocation: %p@0x%08x %08x -> %08x\n", |
| 1657 | obj, (unsigned int) reloc.offset, |
| 1658 | readl(reloc_entry), reloc_val); |
| 1659 | #endif |
| 1660 | writel(reloc_val, reloc_entry); |
| 1661 | |
| 1662 | /* Write the updated presumed offset for this entry back out |
| 1663 | * to the user. |
| 1664 | */ |
| 1665 | reloc.presumed_offset = target_obj_priv->gtt_offset; |
| 1666 | ret = copy_to_user(relocs + i, &reloc, sizeof(reloc)); |
| 1667 | if (ret != 0) { |
| 1668 | drm_gem_object_unreference(target_obj); |
| 1669 | i915_gem_object_unpin(obj); |
| 1670 | return ret; |
| 1671 | } |
| 1672 | |
| 1673 | drm_gem_object_unreference(target_obj); |
| 1674 | } |
| 1675 | |
| 1676 | if (reloc_page != NULL) |
| 1677 | iounmap(reloc_page); |
| 1678 | |
| 1679 | #if WATCH_BUF |
| 1680 | if (0) |
| 1681 | i915_gem_dump_object(obj, 128, __func__, ~0); |
| 1682 | #endif |
| 1683 | return 0; |
| 1684 | } |
| 1685 | |
| 1686 | /** Dispatch a batchbuffer to the ring |
| 1687 | */ |
| 1688 | static int |
| 1689 | i915_dispatch_gem_execbuffer(struct drm_device *dev, |
| 1690 | struct drm_i915_gem_execbuffer *exec, |
| 1691 | uint64_t exec_offset) |
| 1692 | { |
| 1693 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 1694 | struct drm_clip_rect __user *boxes = (struct drm_clip_rect __user *) |
| 1695 | (uintptr_t) exec->cliprects_ptr; |
| 1696 | int nbox = exec->num_cliprects; |
| 1697 | int i = 0, count; |
| 1698 | uint32_t exec_start, exec_len; |
| 1699 | RING_LOCALS; |
| 1700 | |
| 1701 | exec_start = (uint32_t) exec_offset + exec->batch_start_offset; |
| 1702 | exec_len = (uint32_t) exec->batch_len; |
| 1703 | |
| 1704 | if ((exec_start | exec_len) & 0x7) { |
| 1705 | DRM_ERROR("alignment\n"); |
| 1706 | return -EINVAL; |
| 1707 | } |
| 1708 | |
| 1709 | if (!exec_start) |
| 1710 | return -EINVAL; |
| 1711 | |
| 1712 | count = nbox ? nbox : 1; |
| 1713 | |
| 1714 | for (i = 0; i < count; i++) { |
| 1715 | if (i < nbox) { |
| 1716 | int ret = i915_emit_box(dev, boxes, i, |
| 1717 | exec->DR1, exec->DR4); |
| 1718 | if (ret) |
| 1719 | return ret; |
| 1720 | } |
| 1721 | |
| 1722 | if (IS_I830(dev) || IS_845G(dev)) { |
| 1723 | BEGIN_LP_RING(4); |
| 1724 | OUT_RING(MI_BATCH_BUFFER); |
| 1725 | OUT_RING(exec_start | MI_BATCH_NON_SECURE); |
| 1726 | OUT_RING(exec_start + exec_len - 4); |
| 1727 | OUT_RING(0); |
| 1728 | ADVANCE_LP_RING(); |
| 1729 | } else { |
| 1730 | BEGIN_LP_RING(2); |
| 1731 | if (IS_I965G(dev)) { |
| 1732 | OUT_RING(MI_BATCH_BUFFER_START | |
| 1733 | (2 << 6) | |
| 1734 | MI_BATCH_NON_SECURE_I965); |
| 1735 | OUT_RING(exec_start); |
| 1736 | } else { |
| 1737 | OUT_RING(MI_BATCH_BUFFER_START | |
| 1738 | (2 << 6)); |
| 1739 | OUT_RING(exec_start | MI_BATCH_NON_SECURE); |
| 1740 | } |
| 1741 | ADVANCE_LP_RING(); |
| 1742 | } |
| 1743 | } |
| 1744 | |
| 1745 | /* XXX breadcrumb */ |
| 1746 | return 0; |
| 1747 | } |
| 1748 | |
| 1749 | /* Throttle our rendering by waiting until the ring has completed our requests |
| 1750 | * emitted over 20 msec ago. |
| 1751 | * |
| 1752 | * This should get us reasonable parallelism between CPU and GPU but also |
| 1753 | * relatively low latency when blocking on a particular request to finish. |
| 1754 | */ |
| 1755 | static int |
| 1756 | i915_gem_ring_throttle(struct drm_device *dev, struct drm_file *file_priv) |
| 1757 | { |
| 1758 | struct drm_i915_file_private *i915_file_priv = file_priv->driver_priv; |
| 1759 | int ret = 0; |
| 1760 | uint32_t seqno; |
| 1761 | |
| 1762 | mutex_lock(&dev->struct_mutex); |
| 1763 | seqno = i915_file_priv->mm.last_gem_throttle_seqno; |
| 1764 | i915_file_priv->mm.last_gem_throttle_seqno = |
| 1765 | i915_file_priv->mm.last_gem_seqno; |
| 1766 | if (seqno) |
| 1767 | ret = i915_wait_request(dev, seqno); |
| 1768 | mutex_unlock(&dev->struct_mutex); |
| 1769 | return ret; |
| 1770 | } |
| 1771 | |
| 1772 | int |
| 1773 | i915_gem_execbuffer(struct drm_device *dev, void *data, |
| 1774 | struct drm_file *file_priv) |
| 1775 | { |
| 1776 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 1777 | struct drm_i915_file_private *i915_file_priv = file_priv->driver_priv; |
| 1778 | struct drm_i915_gem_execbuffer *args = data; |
| 1779 | struct drm_i915_gem_exec_object *exec_list = NULL; |
| 1780 | struct drm_gem_object **object_list = NULL; |
| 1781 | struct drm_gem_object *batch_obj; |
| 1782 | int ret, i, pinned = 0; |
| 1783 | uint64_t exec_offset; |
| 1784 | uint32_t seqno, flush_domains; |
| 1785 | |
| 1786 | #if WATCH_EXEC |
| 1787 | DRM_INFO("buffers_ptr %d buffer_count %d len %08x\n", |
| 1788 | (int) args->buffers_ptr, args->buffer_count, args->batch_len); |
| 1789 | #endif |
| 1790 | |
Eric Anholt | 4f481ed | 2008-09-10 14:22:49 -0700 | [diff] [blame] | 1791 | if (args->buffer_count < 1) { |
| 1792 | DRM_ERROR("execbuf with %d buffers\n", args->buffer_count); |
| 1793 | return -EINVAL; |
| 1794 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1795 | /* Copy in the exec list from userland */ |
| 1796 | exec_list = drm_calloc(sizeof(*exec_list), args->buffer_count, |
| 1797 | DRM_MEM_DRIVER); |
| 1798 | object_list = drm_calloc(sizeof(*object_list), args->buffer_count, |
| 1799 | DRM_MEM_DRIVER); |
| 1800 | if (exec_list == NULL || object_list == NULL) { |
| 1801 | DRM_ERROR("Failed to allocate exec or object list " |
| 1802 | "for %d buffers\n", |
| 1803 | args->buffer_count); |
| 1804 | ret = -ENOMEM; |
| 1805 | goto pre_mutex_err; |
| 1806 | } |
| 1807 | ret = copy_from_user(exec_list, |
| 1808 | (struct drm_i915_relocation_entry __user *) |
| 1809 | (uintptr_t) args->buffers_ptr, |
| 1810 | sizeof(*exec_list) * args->buffer_count); |
| 1811 | if (ret != 0) { |
| 1812 | DRM_ERROR("copy %d exec entries failed %d\n", |
| 1813 | args->buffer_count, ret); |
| 1814 | goto pre_mutex_err; |
| 1815 | } |
| 1816 | |
| 1817 | mutex_lock(&dev->struct_mutex); |
| 1818 | |
| 1819 | i915_verify_inactive(dev, __FILE__, __LINE__); |
| 1820 | |
| 1821 | if (dev_priv->mm.wedged) { |
| 1822 | DRM_ERROR("Execbuf while wedged\n"); |
| 1823 | mutex_unlock(&dev->struct_mutex); |
| 1824 | return -EIO; |
| 1825 | } |
| 1826 | |
| 1827 | if (dev_priv->mm.suspended) { |
| 1828 | DRM_ERROR("Execbuf while VT-switched.\n"); |
| 1829 | mutex_unlock(&dev->struct_mutex); |
| 1830 | return -EBUSY; |
| 1831 | } |
| 1832 | |
| 1833 | /* Zero the gloabl flush/invalidate flags. These |
| 1834 | * will be modified as each object is bound to the |
| 1835 | * gtt |
| 1836 | */ |
| 1837 | dev->invalidate_domains = 0; |
| 1838 | dev->flush_domains = 0; |
| 1839 | |
| 1840 | /* Look up object handles and perform the relocations */ |
| 1841 | for (i = 0; i < args->buffer_count; i++) { |
| 1842 | object_list[i] = drm_gem_object_lookup(dev, file_priv, |
| 1843 | exec_list[i].handle); |
| 1844 | if (object_list[i] == NULL) { |
| 1845 | DRM_ERROR("Invalid object handle %d at index %d\n", |
| 1846 | exec_list[i].handle, i); |
| 1847 | ret = -EBADF; |
| 1848 | goto err; |
| 1849 | } |
| 1850 | |
| 1851 | object_list[i]->pending_read_domains = 0; |
| 1852 | object_list[i]->pending_write_domain = 0; |
| 1853 | ret = i915_gem_object_pin_and_relocate(object_list[i], |
| 1854 | file_priv, |
| 1855 | &exec_list[i]); |
| 1856 | if (ret) { |
| 1857 | DRM_ERROR("object bind and relocate failed %d\n", ret); |
| 1858 | goto err; |
| 1859 | } |
| 1860 | pinned = i + 1; |
| 1861 | } |
| 1862 | |
| 1863 | /* Set the pending read domains for the batch buffer to COMMAND */ |
| 1864 | batch_obj = object_list[args->buffer_count-1]; |
| 1865 | batch_obj->pending_read_domains = I915_GEM_DOMAIN_COMMAND; |
| 1866 | batch_obj->pending_write_domain = 0; |
| 1867 | |
| 1868 | i915_verify_inactive(dev, __FILE__, __LINE__); |
| 1869 | |
| 1870 | for (i = 0; i < args->buffer_count; i++) { |
| 1871 | struct drm_gem_object *obj = object_list[i]; |
| 1872 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 1873 | |
| 1874 | if (obj_priv->gtt_space == NULL) { |
| 1875 | /* We evicted the buffer in the process of validating |
| 1876 | * our set of buffers in. We could try to recover by |
| 1877 | * kicking them everything out and trying again from |
| 1878 | * the start. |
| 1879 | */ |
| 1880 | ret = -ENOMEM; |
| 1881 | goto err; |
| 1882 | } |
| 1883 | |
| 1884 | /* make sure all previous memory operations have passed */ |
| 1885 | ret = i915_gem_object_set_domain(obj, |
| 1886 | obj->pending_read_domains, |
| 1887 | obj->pending_write_domain); |
| 1888 | if (ret) |
| 1889 | goto err; |
| 1890 | } |
| 1891 | |
| 1892 | i915_verify_inactive(dev, __FILE__, __LINE__); |
| 1893 | |
| 1894 | /* Flush/invalidate caches and chipset buffer */ |
| 1895 | flush_domains = i915_gem_dev_set_domain(dev); |
| 1896 | |
| 1897 | i915_verify_inactive(dev, __FILE__, __LINE__); |
| 1898 | |
| 1899 | #if WATCH_COHERENCY |
| 1900 | for (i = 0; i < args->buffer_count; i++) { |
| 1901 | i915_gem_object_check_coherency(object_list[i], |
| 1902 | exec_list[i].handle); |
| 1903 | } |
| 1904 | #endif |
| 1905 | |
| 1906 | exec_offset = exec_list[args->buffer_count - 1].offset; |
| 1907 | |
| 1908 | #if WATCH_EXEC |
| 1909 | i915_gem_dump_object(object_list[args->buffer_count - 1], |
| 1910 | args->batch_len, |
| 1911 | __func__, |
| 1912 | ~0); |
| 1913 | #endif |
| 1914 | |
| 1915 | (void)i915_add_request(dev, flush_domains); |
| 1916 | |
| 1917 | /* Exec the batchbuffer */ |
| 1918 | ret = i915_dispatch_gem_execbuffer(dev, args, exec_offset); |
| 1919 | if (ret) { |
| 1920 | DRM_ERROR("dispatch failed %d\n", ret); |
| 1921 | goto err; |
| 1922 | } |
| 1923 | |
| 1924 | /* |
| 1925 | * Ensure that the commands in the batch buffer are |
| 1926 | * finished before the interrupt fires |
| 1927 | */ |
| 1928 | flush_domains = i915_retire_commands(dev); |
| 1929 | |
| 1930 | i915_verify_inactive(dev, __FILE__, __LINE__); |
| 1931 | |
| 1932 | /* |
| 1933 | * Get a seqno representing the execution of the current buffer, |
| 1934 | * which we can wait on. We would like to mitigate these interrupts, |
| 1935 | * likely by only creating seqnos occasionally (so that we have |
| 1936 | * *some* interrupts representing completion of buffers that we can |
| 1937 | * wait on when trying to clear up gtt space). |
| 1938 | */ |
| 1939 | seqno = i915_add_request(dev, flush_domains); |
| 1940 | BUG_ON(seqno == 0); |
| 1941 | i915_file_priv->mm.last_gem_seqno = seqno; |
| 1942 | for (i = 0; i < args->buffer_count; i++) { |
| 1943 | struct drm_gem_object *obj = object_list[i]; |
| 1944 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 1945 | |
| 1946 | i915_gem_object_move_to_active(obj); |
| 1947 | obj_priv->last_rendering_seqno = seqno; |
| 1948 | #if WATCH_LRU |
| 1949 | DRM_INFO("%s: move to exec list %p\n", __func__, obj); |
| 1950 | #endif |
| 1951 | } |
| 1952 | #if WATCH_LRU |
| 1953 | i915_dump_lru(dev, __func__); |
| 1954 | #endif |
| 1955 | |
| 1956 | i915_verify_inactive(dev, __FILE__, __LINE__); |
| 1957 | |
| 1958 | /* Copy the new buffer offsets back to the user's exec list. */ |
| 1959 | ret = copy_to_user((struct drm_i915_relocation_entry __user *) |
| 1960 | (uintptr_t) args->buffers_ptr, |
| 1961 | exec_list, |
| 1962 | sizeof(*exec_list) * args->buffer_count); |
| 1963 | if (ret) |
| 1964 | DRM_ERROR("failed to copy %d exec entries " |
| 1965 | "back to user (%d)\n", |
| 1966 | args->buffer_count, ret); |
| 1967 | err: |
| 1968 | if (object_list != NULL) { |
| 1969 | for (i = 0; i < pinned; i++) |
| 1970 | i915_gem_object_unpin(object_list[i]); |
| 1971 | |
| 1972 | for (i = 0; i < args->buffer_count; i++) |
| 1973 | drm_gem_object_unreference(object_list[i]); |
| 1974 | } |
| 1975 | mutex_unlock(&dev->struct_mutex); |
| 1976 | |
| 1977 | pre_mutex_err: |
| 1978 | drm_free(object_list, sizeof(*object_list) * args->buffer_count, |
| 1979 | DRM_MEM_DRIVER); |
| 1980 | drm_free(exec_list, sizeof(*exec_list) * args->buffer_count, |
| 1981 | DRM_MEM_DRIVER); |
| 1982 | |
| 1983 | return ret; |
| 1984 | } |
| 1985 | |
| 1986 | int |
| 1987 | i915_gem_object_pin(struct drm_gem_object *obj, uint32_t alignment) |
| 1988 | { |
| 1989 | struct drm_device *dev = obj->dev; |
| 1990 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 1991 | int ret; |
| 1992 | |
| 1993 | i915_verify_inactive(dev, __FILE__, __LINE__); |
| 1994 | if (obj_priv->gtt_space == NULL) { |
| 1995 | ret = i915_gem_object_bind_to_gtt(obj, alignment); |
| 1996 | if (ret != 0) { |
| 1997 | DRM_ERROR("Failure to bind: %d", ret); |
| 1998 | return ret; |
| 1999 | } |
| 2000 | } |
| 2001 | obj_priv->pin_count++; |
| 2002 | |
| 2003 | /* If the object is not active and not pending a flush, |
| 2004 | * remove it from the inactive list |
| 2005 | */ |
| 2006 | if (obj_priv->pin_count == 1) { |
| 2007 | atomic_inc(&dev->pin_count); |
| 2008 | atomic_add(obj->size, &dev->pin_memory); |
| 2009 | if (!obj_priv->active && |
| 2010 | (obj->write_domain & ~(I915_GEM_DOMAIN_CPU | |
| 2011 | I915_GEM_DOMAIN_GTT)) == 0 && |
| 2012 | !list_empty(&obj_priv->list)) |
| 2013 | list_del_init(&obj_priv->list); |
| 2014 | } |
| 2015 | i915_verify_inactive(dev, __FILE__, __LINE__); |
| 2016 | |
| 2017 | return 0; |
| 2018 | } |
| 2019 | |
| 2020 | void |
| 2021 | i915_gem_object_unpin(struct drm_gem_object *obj) |
| 2022 | { |
| 2023 | struct drm_device *dev = obj->dev; |
| 2024 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 2025 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 2026 | |
| 2027 | i915_verify_inactive(dev, __FILE__, __LINE__); |
| 2028 | obj_priv->pin_count--; |
| 2029 | BUG_ON(obj_priv->pin_count < 0); |
| 2030 | BUG_ON(obj_priv->gtt_space == NULL); |
| 2031 | |
| 2032 | /* If the object is no longer pinned, and is |
| 2033 | * neither active nor being flushed, then stick it on |
| 2034 | * the inactive list |
| 2035 | */ |
| 2036 | if (obj_priv->pin_count == 0) { |
| 2037 | if (!obj_priv->active && |
| 2038 | (obj->write_domain & ~(I915_GEM_DOMAIN_CPU | |
| 2039 | I915_GEM_DOMAIN_GTT)) == 0) |
| 2040 | list_move_tail(&obj_priv->list, |
| 2041 | &dev_priv->mm.inactive_list); |
| 2042 | atomic_dec(&dev->pin_count); |
| 2043 | atomic_sub(obj->size, &dev->pin_memory); |
| 2044 | } |
| 2045 | i915_verify_inactive(dev, __FILE__, __LINE__); |
| 2046 | } |
| 2047 | |
| 2048 | int |
| 2049 | i915_gem_pin_ioctl(struct drm_device *dev, void *data, |
| 2050 | struct drm_file *file_priv) |
| 2051 | { |
| 2052 | struct drm_i915_gem_pin *args = data; |
| 2053 | struct drm_gem_object *obj; |
| 2054 | struct drm_i915_gem_object *obj_priv; |
| 2055 | int ret; |
| 2056 | |
| 2057 | mutex_lock(&dev->struct_mutex); |
| 2058 | |
| 2059 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
| 2060 | if (obj == NULL) { |
| 2061 | DRM_ERROR("Bad handle in i915_gem_pin_ioctl(): %d\n", |
| 2062 | args->handle); |
| 2063 | mutex_unlock(&dev->struct_mutex); |
| 2064 | return -EBADF; |
| 2065 | } |
| 2066 | obj_priv = obj->driver_private; |
| 2067 | |
| 2068 | ret = i915_gem_object_pin(obj, args->alignment); |
| 2069 | if (ret != 0) { |
| 2070 | drm_gem_object_unreference(obj); |
| 2071 | mutex_unlock(&dev->struct_mutex); |
| 2072 | return ret; |
| 2073 | } |
| 2074 | |
| 2075 | /* XXX - flush the CPU caches for pinned objects |
| 2076 | * as the X server doesn't manage domains yet |
| 2077 | */ |
| 2078 | if (obj->write_domain & I915_GEM_DOMAIN_CPU) { |
| 2079 | i915_gem_clflush_object(obj); |
| 2080 | drm_agp_chipset_flush(dev); |
| 2081 | obj->write_domain = 0; |
| 2082 | } |
| 2083 | args->offset = obj_priv->gtt_offset; |
| 2084 | drm_gem_object_unreference(obj); |
| 2085 | mutex_unlock(&dev->struct_mutex); |
| 2086 | |
| 2087 | return 0; |
| 2088 | } |
| 2089 | |
| 2090 | int |
| 2091 | i915_gem_unpin_ioctl(struct drm_device *dev, void *data, |
| 2092 | struct drm_file *file_priv) |
| 2093 | { |
| 2094 | struct drm_i915_gem_pin *args = data; |
| 2095 | struct drm_gem_object *obj; |
| 2096 | |
| 2097 | mutex_lock(&dev->struct_mutex); |
| 2098 | |
| 2099 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
| 2100 | if (obj == NULL) { |
| 2101 | DRM_ERROR("Bad handle in i915_gem_unpin_ioctl(): %d\n", |
| 2102 | args->handle); |
| 2103 | mutex_unlock(&dev->struct_mutex); |
| 2104 | return -EBADF; |
| 2105 | } |
| 2106 | |
| 2107 | i915_gem_object_unpin(obj); |
| 2108 | |
| 2109 | drm_gem_object_unreference(obj); |
| 2110 | mutex_unlock(&dev->struct_mutex); |
| 2111 | return 0; |
| 2112 | } |
| 2113 | |
| 2114 | int |
| 2115 | i915_gem_busy_ioctl(struct drm_device *dev, void *data, |
| 2116 | struct drm_file *file_priv) |
| 2117 | { |
| 2118 | struct drm_i915_gem_busy *args = data; |
| 2119 | struct drm_gem_object *obj; |
| 2120 | struct drm_i915_gem_object *obj_priv; |
| 2121 | |
| 2122 | mutex_lock(&dev->struct_mutex); |
| 2123 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
| 2124 | if (obj == NULL) { |
| 2125 | DRM_ERROR("Bad handle in i915_gem_busy_ioctl(): %d\n", |
| 2126 | args->handle); |
| 2127 | mutex_unlock(&dev->struct_mutex); |
| 2128 | return -EBADF; |
| 2129 | } |
| 2130 | |
| 2131 | obj_priv = obj->driver_private; |
| 2132 | args->busy = obj_priv->active; |
| 2133 | |
| 2134 | drm_gem_object_unreference(obj); |
| 2135 | mutex_unlock(&dev->struct_mutex); |
| 2136 | return 0; |
| 2137 | } |
| 2138 | |
| 2139 | int |
| 2140 | i915_gem_throttle_ioctl(struct drm_device *dev, void *data, |
| 2141 | struct drm_file *file_priv) |
| 2142 | { |
| 2143 | return i915_gem_ring_throttle(dev, file_priv); |
| 2144 | } |
| 2145 | |
| 2146 | int i915_gem_init_object(struct drm_gem_object *obj) |
| 2147 | { |
| 2148 | struct drm_i915_gem_object *obj_priv; |
| 2149 | |
| 2150 | obj_priv = drm_calloc(1, sizeof(*obj_priv), DRM_MEM_DRIVER); |
| 2151 | if (obj_priv == NULL) |
| 2152 | return -ENOMEM; |
| 2153 | |
| 2154 | /* |
| 2155 | * We've just allocated pages from the kernel, |
| 2156 | * so they've just been written by the CPU with |
| 2157 | * zeros. They'll need to be clflushed before we |
| 2158 | * use them with the GPU. |
| 2159 | */ |
| 2160 | obj->write_domain = I915_GEM_DOMAIN_CPU; |
| 2161 | obj->read_domains = I915_GEM_DOMAIN_CPU; |
| 2162 | |
Keith Packard | ba1eb1d | 2008-10-14 19:55:10 -0700 | [diff] [blame] | 2163 | obj_priv->agp_type = AGP_USER_MEMORY; |
| 2164 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2165 | obj->driver_private = obj_priv; |
| 2166 | obj_priv->obj = obj; |
| 2167 | INIT_LIST_HEAD(&obj_priv->list); |
| 2168 | return 0; |
| 2169 | } |
| 2170 | |
| 2171 | void i915_gem_free_object(struct drm_gem_object *obj) |
| 2172 | { |
| 2173 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 2174 | |
| 2175 | while (obj_priv->pin_count > 0) |
| 2176 | i915_gem_object_unpin(obj); |
| 2177 | |
| 2178 | i915_gem_object_unbind(obj); |
| 2179 | |
| 2180 | drm_free(obj_priv->page_cpu_valid, 1, DRM_MEM_DRIVER); |
| 2181 | drm_free(obj->driver_private, 1, DRM_MEM_DRIVER); |
| 2182 | } |
| 2183 | |
| 2184 | static int |
| 2185 | i915_gem_set_domain(struct drm_gem_object *obj, |
| 2186 | struct drm_file *file_priv, |
| 2187 | uint32_t read_domains, |
| 2188 | uint32_t write_domain) |
| 2189 | { |
| 2190 | struct drm_device *dev = obj->dev; |
| 2191 | int ret; |
| 2192 | uint32_t flush_domains; |
| 2193 | |
| 2194 | BUG_ON(!mutex_is_locked(&dev->struct_mutex)); |
| 2195 | |
| 2196 | ret = i915_gem_object_set_domain(obj, read_domains, write_domain); |
| 2197 | if (ret) |
| 2198 | return ret; |
| 2199 | flush_domains = i915_gem_dev_set_domain(obj->dev); |
| 2200 | |
| 2201 | if (flush_domains & ~(I915_GEM_DOMAIN_CPU|I915_GEM_DOMAIN_GTT)) |
| 2202 | (void) i915_add_request(dev, flush_domains); |
| 2203 | |
| 2204 | return 0; |
| 2205 | } |
| 2206 | |
| 2207 | /** Unbinds all objects that are on the given buffer list. */ |
| 2208 | static int |
| 2209 | i915_gem_evict_from_list(struct drm_device *dev, struct list_head *head) |
| 2210 | { |
| 2211 | struct drm_gem_object *obj; |
| 2212 | struct drm_i915_gem_object *obj_priv; |
| 2213 | int ret; |
| 2214 | |
| 2215 | while (!list_empty(head)) { |
| 2216 | obj_priv = list_first_entry(head, |
| 2217 | struct drm_i915_gem_object, |
| 2218 | list); |
| 2219 | obj = obj_priv->obj; |
| 2220 | |
| 2221 | if (obj_priv->pin_count != 0) { |
| 2222 | DRM_ERROR("Pinned object in unbind list\n"); |
| 2223 | mutex_unlock(&dev->struct_mutex); |
| 2224 | return -EINVAL; |
| 2225 | } |
| 2226 | |
| 2227 | ret = i915_gem_object_unbind(obj); |
| 2228 | if (ret != 0) { |
| 2229 | DRM_ERROR("Error unbinding object in LeaveVT: %d\n", |
| 2230 | ret); |
| 2231 | mutex_unlock(&dev->struct_mutex); |
| 2232 | return ret; |
| 2233 | } |
| 2234 | } |
| 2235 | |
| 2236 | |
| 2237 | return 0; |
| 2238 | } |
| 2239 | |
| 2240 | static int |
| 2241 | i915_gem_idle(struct drm_device *dev) |
| 2242 | { |
| 2243 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 2244 | uint32_t seqno, cur_seqno, last_seqno; |
| 2245 | int stuck, ret; |
| 2246 | |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 2247 | mutex_lock(&dev->struct_mutex); |
| 2248 | |
| 2249 | if (dev_priv->mm.suspended || dev_priv->ring.ring_obj == NULL) { |
| 2250 | mutex_unlock(&dev->struct_mutex); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2251 | return 0; |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 2252 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2253 | |
| 2254 | /* Hack! Don't let anybody do execbuf while we don't control the chip. |
| 2255 | * We need to replace this with a semaphore, or something. |
| 2256 | */ |
| 2257 | dev_priv->mm.suspended = 1; |
| 2258 | |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 2259 | /* Cancel the retire work handler, wait for it to finish if running |
| 2260 | */ |
| 2261 | mutex_unlock(&dev->struct_mutex); |
| 2262 | cancel_delayed_work_sync(&dev_priv->mm.retire_work); |
| 2263 | mutex_lock(&dev->struct_mutex); |
| 2264 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2265 | i915_kernel_lost_context(dev); |
| 2266 | |
| 2267 | /* Flush the GPU along with all non-CPU write domains |
| 2268 | */ |
| 2269 | i915_gem_flush(dev, ~(I915_GEM_DOMAIN_CPU|I915_GEM_DOMAIN_GTT), |
| 2270 | ~(I915_GEM_DOMAIN_CPU|I915_GEM_DOMAIN_GTT)); |
| 2271 | seqno = i915_add_request(dev, ~(I915_GEM_DOMAIN_CPU | |
| 2272 | I915_GEM_DOMAIN_GTT)); |
| 2273 | |
| 2274 | if (seqno == 0) { |
| 2275 | mutex_unlock(&dev->struct_mutex); |
| 2276 | return -ENOMEM; |
| 2277 | } |
| 2278 | |
| 2279 | dev_priv->mm.waiting_gem_seqno = seqno; |
| 2280 | last_seqno = 0; |
| 2281 | stuck = 0; |
| 2282 | for (;;) { |
| 2283 | cur_seqno = i915_get_gem_seqno(dev); |
| 2284 | if (i915_seqno_passed(cur_seqno, seqno)) |
| 2285 | break; |
| 2286 | if (last_seqno == cur_seqno) { |
| 2287 | if (stuck++ > 100) { |
| 2288 | DRM_ERROR("hardware wedged\n"); |
| 2289 | dev_priv->mm.wedged = 1; |
| 2290 | DRM_WAKEUP(&dev_priv->irq_queue); |
| 2291 | break; |
| 2292 | } |
| 2293 | } |
| 2294 | msleep(10); |
| 2295 | last_seqno = cur_seqno; |
| 2296 | } |
| 2297 | dev_priv->mm.waiting_gem_seqno = 0; |
| 2298 | |
| 2299 | i915_gem_retire_requests(dev); |
| 2300 | |
| 2301 | /* Active and flushing should now be empty as we've |
| 2302 | * waited for a sequence higher than any pending execbuffer |
| 2303 | */ |
| 2304 | BUG_ON(!list_empty(&dev_priv->mm.active_list)); |
| 2305 | BUG_ON(!list_empty(&dev_priv->mm.flushing_list)); |
| 2306 | |
| 2307 | /* Request should now be empty as we've also waited |
| 2308 | * for the last request in the list |
| 2309 | */ |
| 2310 | BUG_ON(!list_empty(&dev_priv->mm.request_list)); |
| 2311 | |
| 2312 | /* Move all buffers out of the GTT. */ |
| 2313 | ret = i915_gem_evict_from_list(dev, &dev_priv->mm.inactive_list); |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 2314 | if (ret) { |
| 2315 | mutex_unlock(&dev->struct_mutex); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2316 | return ret; |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 2317 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2318 | |
| 2319 | BUG_ON(!list_empty(&dev_priv->mm.active_list)); |
| 2320 | BUG_ON(!list_empty(&dev_priv->mm.flushing_list)); |
| 2321 | BUG_ON(!list_empty(&dev_priv->mm.inactive_list)); |
| 2322 | BUG_ON(!list_empty(&dev_priv->mm.request_list)); |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 2323 | |
| 2324 | i915_gem_cleanup_ringbuffer(dev); |
| 2325 | mutex_unlock(&dev->struct_mutex); |
| 2326 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2327 | return 0; |
| 2328 | } |
| 2329 | |
| 2330 | static int |
| 2331 | i915_gem_init_hws(struct drm_device *dev) |
| 2332 | { |
| 2333 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 2334 | struct drm_gem_object *obj; |
| 2335 | struct drm_i915_gem_object *obj_priv; |
| 2336 | int ret; |
| 2337 | |
| 2338 | /* If we need a physical address for the status page, it's already |
| 2339 | * initialized at driver load time. |
| 2340 | */ |
| 2341 | if (!I915_NEED_GFX_HWS(dev)) |
| 2342 | return 0; |
| 2343 | |
| 2344 | obj = drm_gem_object_alloc(dev, 4096); |
| 2345 | if (obj == NULL) { |
| 2346 | DRM_ERROR("Failed to allocate status page\n"); |
| 2347 | return -ENOMEM; |
| 2348 | } |
| 2349 | obj_priv = obj->driver_private; |
Keith Packard | ba1eb1d | 2008-10-14 19:55:10 -0700 | [diff] [blame] | 2350 | obj_priv->agp_type = AGP_USER_CACHED_MEMORY; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2351 | |
| 2352 | ret = i915_gem_object_pin(obj, 4096); |
| 2353 | if (ret != 0) { |
| 2354 | drm_gem_object_unreference(obj); |
| 2355 | return ret; |
| 2356 | } |
| 2357 | |
| 2358 | dev_priv->status_gfx_addr = obj_priv->gtt_offset; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2359 | |
Keith Packard | ba1eb1d | 2008-10-14 19:55:10 -0700 | [diff] [blame] | 2360 | dev_priv->hw_status_page = kmap(obj_priv->page_list[0]); |
| 2361 | if (dev_priv->hw_status_page == NULL) { |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2362 | DRM_ERROR("Failed to map status page.\n"); |
| 2363 | memset(&dev_priv->hws_map, 0, sizeof(dev_priv->hws_map)); |
| 2364 | drm_gem_object_unreference(obj); |
| 2365 | return -EINVAL; |
| 2366 | } |
| 2367 | dev_priv->hws_obj = obj; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2368 | memset(dev_priv->hw_status_page, 0, PAGE_SIZE); |
| 2369 | I915_WRITE(HWS_PGA, dev_priv->status_gfx_addr); |
Keith Packard | ba1eb1d | 2008-10-14 19:55:10 -0700 | [diff] [blame] | 2370 | I915_READ(HWS_PGA); /* posting read */ |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2371 | DRM_DEBUG("hws offset: 0x%08x\n", dev_priv->status_gfx_addr); |
| 2372 | |
| 2373 | return 0; |
| 2374 | } |
| 2375 | |
| 2376 | static int |
| 2377 | i915_gem_init_ringbuffer(struct drm_device *dev) |
| 2378 | { |
| 2379 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 2380 | struct drm_gem_object *obj; |
| 2381 | struct drm_i915_gem_object *obj_priv; |
| 2382 | int ret; |
Keith Packard | 50aa253 | 2008-10-14 17:20:35 -0700 | [diff] [blame] | 2383 | u32 head; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2384 | |
| 2385 | ret = i915_gem_init_hws(dev); |
| 2386 | if (ret != 0) |
| 2387 | return ret; |
| 2388 | |
| 2389 | obj = drm_gem_object_alloc(dev, 128 * 1024); |
| 2390 | if (obj == NULL) { |
| 2391 | DRM_ERROR("Failed to allocate ringbuffer\n"); |
| 2392 | return -ENOMEM; |
| 2393 | } |
| 2394 | obj_priv = obj->driver_private; |
| 2395 | |
| 2396 | ret = i915_gem_object_pin(obj, 4096); |
| 2397 | if (ret != 0) { |
| 2398 | drm_gem_object_unreference(obj); |
| 2399 | return ret; |
| 2400 | } |
| 2401 | |
| 2402 | /* Set up the kernel mapping for the ring. */ |
| 2403 | dev_priv->ring.Size = obj->size; |
| 2404 | dev_priv->ring.tail_mask = obj->size - 1; |
| 2405 | |
| 2406 | dev_priv->ring.map.offset = dev->agp->base + obj_priv->gtt_offset; |
| 2407 | dev_priv->ring.map.size = obj->size; |
| 2408 | dev_priv->ring.map.type = 0; |
| 2409 | dev_priv->ring.map.flags = 0; |
| 2410 | dev_priv->ring.map.mtrr = 0; |
| 2411 | |
Eric Anholt | bd88ee4 | 2008-09-23 14:50:57 -0700 | [diff] [blame] | 2412 | drm_core_ioremap_wc(&dev_priv->ring.map, dev); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2413 | if (dev_priv->ring.map.handle == NULL) { |
| 2414 | DRM_ERROR("Failed to map ringbuffer.\n"); |
| 2415 | memset(&dev_priv->ring, 0, sizeof(dev_priv->ring)); |
| 2416 | drm_gem_object_unreference(obj); |
| 2417 | return -EINVAL; |
| 2418 | } |
| 2419 | dev_priv->ring.ring_obj = obj; |
| 2420 | dev_priv->ring.virtual_start = dev_priv->ring.map.handle; |
| 2421 | |
| 2422 | /* Stop the ring if it's running. */ |
| 2423 | I915_WRITE(PRB0_CTL, 0); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2424 | I915_WRITE(PRB0_TAIL, 0); |
Keith Packard | 50aa253 | 2008-10-14 17:20:35 -0700 | [diff] [blame] | 2425 | I915_WRITE(PRB0_HEAD, 0); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2426 | |
| 2427 | /* Initialize the ring. */ |
| 2428 | I915_WRITE(PRB0_START, obj_priv->gtt_offset); |
Keith Packard | 50aa253 | 2008-10-14 17:20:35 -0700 | [diff] [blame] | 2429 | head = I915_READ(PRB0_HEAD) & HEAD_ADDR; |
| 2430 | |
| 2431 | /* G45 ring initialization fails to reset head to zero */ |
| 2432 | if (head != 0) { |
| 2433 | DRM_ERROR("Ring head not reset to zero " |
| 2434 | "ctl %08x head %08x tail %08x start %08x\n", |
| 2435 | I915_READ(PRB0_CTL), |
| 2436 | I915_READ(PRB0_HEAD), |
| 2437 | I915_READ(PRB0_TAIL), |
| 2438 | I915_READ(PRB0_START)); |
| 2439 | I915_WRITE(PRB0_HEAD, 0); |
| 2440 | |
| 2441 | DRM_ERROR("Ring head forced to zero " |
| 2442 | "ctl %08x head %08x tail %08x start %08x\n", |
| 2443 | I915_READ(PRB0_CTL), |
| 2444 | I915_READ(PRB0_HEAD), |
| 2445 | I915_READ(PRB0_TAIL), |
| 2446 | I915_READ(PRB0_START)); |
| 2447 | } |
| 2448 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2449 | I915_WRITE(PRB0_CTL, |
| 2450 | ((obj->size - 4096) & RING_NR_PAGES) | |
| 2451 | RING_NO_REPORT | |
| 2452 | RING_VALID); |
| 2453 | |
Keith Packard | 50aa253 | 2008-10-14 17:20:35 -0700 | [diff] [blame] | 2454 | head = I915_READ(PRB0_HEAD) & HEAD_ADDR; |
| 2455 | |
| 2456 | /* If the head is still not zero, the ring is dead */ |
| 2457 | if (head != 0) { |
| 2458 | DRM_ERROR("Ring initialization failed " |
| 2459 | "ctl %08x head %08x tail %08x start %08x\n", |
| 2460 | I915_READ(PRB0_CTL), |
| 2461 | I915_READ(PRB0_HEAD), |
| 2462 | I915_READ(PRB0_TAIL), |
| 2463 | I915_READ(PRB0_START)); |
| 2464 | return -EIO; |
| 2465 | } |
| 2466 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2467 | /* Update our cache of the ring state */ |
| 2468 | i915_kernel_lost_context(dev); |
| 2469 | |
| 2470 | return 0; |
| 2471 | } |
| 2472 | |
| 2473 | static void |
| 2474 | i915_gem_cleanup_ringbuffer(struct drm_device *dev) |
| 2475 | { |
| 2476 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 2477 | |
| 2478 | if (dev_priv->ring.ring_obj == NULL) |
| 2479 | return; |
| 2480 | |
| 2481 | drm_core_ioremapfree(&dev_priv->ring.map, dev); |
| 2482 | |
| 2483 | i915_gem_object_unpin(dev_priv->ring.ring_obj); |
| 2484 | drm_gem_object_unreference(dev_priv->ring.ring_obj); |
| 2485 | dev_priv->ring.ring_obj = NULL; |
| 2486 | memset(&dev_priv->ring, 0, sizeof(dev_priv->ring)); |
| 2487 | |
| 2488 | if (dev_priv->hws_obj != NULL) { |
Keith Packard | ba1eb1d | 2008-10-14 19:55:10 -0700 | [diff] [blame] | 2489 | struct drm_gem_object *obj = dev_priv->hws_obj; |
| 2490 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 2491 | |
| 2492 | kunmap(obj_priv->page_list[0]); |
| 2493 | i915_gem_object_unpin(obj); |
| 2494 | drm_gem_object_unreference(obj); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2495 | dev_priv->hws_obj = NULL; |
| 2496 | memset(&dev_priv->hws_map, 0, sizeof(dev_priv->hws_map)); |
Keith Packard | ba1eb1d | 2008-10-14 19:55:10 -0700 | [diff] [blame] | 2497 | dev_priv->hw_status_page = NULL; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2498 | |
| 2499 | /* Write high address into HWS_PGA when disabling. */ |
| 2500 | I915_WRITE(HWS_PGA, 0x1ffff000); |
| 2501 | } |
| 2502 | } |
| 2503 | |
| 2504 | int |
| 2505 | i915_gem_entervt_ioctl(struct drm_device *dev, void *data, |
| 2506 | struct drm_file *file_priv) |
| 2507 | { |
| 2508 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 2509 | int ret; |
| 2510 | |
| 2511 | if (dev_priv->mm.wedged) { |
| 2512 | DRM_ERROR("Reenabling wedged hardware, good luck\n"); |
| 2513 | dev_priv->mm.wedged = 0; |
| 2514 | } |
| 2515 | |
| 2516 | ret = i915_gem_init_ringbuffer(dev); |
| 2517 | if (ret != 0) |
| 2518 | return ret; |
| 2519 | |
| 2520 | mutex_lock(&dev->struct_mutex); |
| 2521 | BUG_ON(!list_empty(&dev_priv->mm.active_list)); |
| 2522 | BUG_ON(!list_empty(&dev_priv->mm.flushing_list)); |
| 2523 | BUG_ON(!list_empty(&dev_priv->mm.inactive_list)); |
| 2524 | BUG_ON(!list_empty(&dev_priv->mm.request_list)); |
| 2525 | dev_priv->mm.suspended = 0; |
| 2526 | mutex_unlock(&dev->struct_mutex); |
Kristian Høgsberg | dbb19d3 | 2008-08-20 11:04:27 -0400 | [diff] [blame] | 2527 | |
| 2528 | drm_irq_install(dev); |
| 2529 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2530 | return 0; |
| 2531 | } |
| 2532 | |
| 2533 | int |
| 2534 | i915_gem_leavevt_ioctl(struct drm_device *dev, void *data, |
| 2535 | struct drm_file *file_priv) |
| 2536 | { |
| 2537 | int ret; |
| 2538 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2539 | ret = i915_gem_idle(dev); |
Kristian Høgsberg | dbb19d3 | 2008-08-20 11:04:27 -0400 | [diff] [blame] | 2540 | drm_irq_uninstall(dev); |
| 2541 | |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 2542 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2543 | } |
| 2544 | |
| 2545 | void |
| 2546 | i915_gem_lastclose(struct drm_device *dev) |
| 2547 | { |
| 2548 | int ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2549 | |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 2550 | ret = i915_gem_idle(dev); |
| 2551 | if (ret) |
| 2552 | DRM_ERROR("failed to idle hardware: %d\n", ret); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2553 | } |
| 2554 | |
| 2555 | void |
| 2556 | i915_gem_load(struct drm_device *dev) |
| 2557 | { |
| 2558 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 2559 | |
| 2560 | INIT_LIST_HEAD(&dev_priv->mm.active_list); |
| 2561 | INIT_LIST_HEAD(&dev_priv->mm.flushing_list); |
| 2562 | INIT_LIST_HEAD(&dev_priv->mm.inactive_list); |
| 2563 | INIT_LIST_HEAD(&dev_priv->mm.request_list); |
| 2564 | INIT_DELAYED_WORK(&dev_priv->mm.retire_work, |
| 2565 | i915_gem_retire_work_handler); |
Eric Anholt | 546b097 | 2008-09-01 16:45:29 -0700 | [diff] [blame] | 2566 | INIT_WORK(&dev_priv->mm.vblank_work, |
| 2567 | i915_gem_vblank_work_handler); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2568 | dev_priv->mm.next_gem_seqno = 1; |
| 2569 | |
| 2570 | i915_gem_detect_bit_6_swizzle(dev); |
| 2571 | } |