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> |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 33 | #include <linux/pci.h> |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 34 | |
Eric Anholt | 28dfe52 | 2008-11-13 15:00:55 -0800 | [diff] [blame] | 35 | #define I915_GEM_GPU_DOMAINS (~(I915_GEM_DOMAIN_CPU | I915_GEM_DOMAIN_GTT)) |
| 36 | |
Keith Packard | c0d9082 | 2008-11-20 23:11:08 -0800 | [diff] [blame] | 37 | static void |
| 38 | i915_gem_object_set_to_gpu_domain(struct drm_gem_object *obj, |
| 39 | uint32_t read_domains, |
| 40 | uint32_t write_domain); |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 41 | static void i915_gem_object_flush_gpu_write_domain(struct drm_gem_object *obj); |
| 42 | static void i915_gem_object_flush_gtt_write_domain(struct drm_gem_object *obj); |
| 43 | static void i915_gem_object_flush_cpu_write_domain(struct drm_gem_object *obj); |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 44 | static int i915_gem_object_set_to_cpu_domain(struct drm_gem_object *obj, |
| 45 | int write); |
| 46 | static int i915_gem_object_set_cpu_read_domain_range(struct drm_gem_object *obj, |
| 47 | uint64_t offset, |
| 48 | uint64_t size); |
| 49 | static void i915_gem_object_set_to_full_cpu_read_domain(struct drm_gem_object *obj); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 50 | static int i915_gem_object_get_page_list(struct drm_gem_object *obj); |
| 51 | static void i915_gem_object_free_page_list(struct drm_gem_object *obj); |
| 52 | static int i915_gem_object_wait_rendering(struct drm_gem_object *obj); |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 53 | static int i915_gem_object_bind_to_gtt(struct drm_gem_object *obj, |
| 54 | unsigned alignment); |
| 55 | static void i915_gem_object_get_fence_reg(struct drm_gem_object *obj); |
| 56 | static void i915_gem_clear_fence_reg(struct drm_gem_object *obj); |
| 57 | static int i915_gem_evict_something(struct drm_device *dev); |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 58 | static int i915_gem_phys_pwrite(struct drm_device *dev, struct drm_gem_object *obj, |
| 59 | struct drm_i915_gem_pwrite *args, |
| 60 | struct drm_file *file_priv); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 61 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 62 | int i915_gem_do_init(struct drm_device *dev, unsigned long start, |
| 63 | unsigned long end) |
| 64 | { |
| 65 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 66 | |
| 67 | if (start >= end || |
| 68 | (start & (PAGE_SIZE - 1)) != 0 || |
| 69 | (end & (PAGE_SIZE - 1)) != 0) { |
| 70 | return -EINVAL; |
| 71 | } |
| 72 | |
| 73 | drm_mm_init(&dev_priv->mm.gtt_space, start, |
| 74 | end - start); |
| 75 | |
| 76 | dev->gtt_total = (uint32_t) (end - start); |
| 77 | |
| 78 | return 0; |
| 79 | } |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 80 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 81 | int |
| 82 | i915_gem_init_ioctl(struct drm_device *dev, void *data, |
| 83 | struct drm_file *file_priv) |
| 84 | { |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 85 | struct drm_i915_gem_init *args = data; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 86 | int ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 87 | |
| 88 | mutex_lock(&dev->struct_mutex); |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 89 | ret = i915_gem_do_init(dev, args->gtt_start, args->gtt_end); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 90 | mutex_unlock(&dev->struct_mutex); |
| 91 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 92 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 93 | } |
| 94 | |
Eric Anholt | 5a125c3 | 2008-10-22 21:40:13 -0700 | [diff] [blame] | 95 | int |
| 96 | i915_gem_get_aperture_ioctl(struct drm_device *dev, void *data, |
| 97 | struct drm_file *file_priv) |
| 98 | { |
Eric Anholt | 5a125c3 | 2008-10-22 21:40:13 -0700 | [diff] [blame] | 99 | struct drm_i915_gem_get_aperture *args = data; |
Eric Anholt | 5a125c3 | 2008-10-22 21:40:13 -0700 | [diff] [blame] | 100 | |
| 101 | if (!(dev->driver->driver_features & DRIVER_GEM)) |
| 102 | return -ENODEV; |
| 103 | |
| 104 | args->aper_size = dev->gtt_total; |
Keith Packard | 2678d9d | 2008-11-20 22:54:54 -0800 | [diff] [blame] | 105 | args->aper_available_size = (args->aper_size - |
| 106 | atomic_read(&dev->pin_memory)); |
Eric Anholt | 5a125c3 | 2008-10-22 21:40:13 -0700 | [diff] [blame] | 107 | |
| 108 | return 0; |
| 109 | } |
| 110 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 111 | |
| 112 | /** |
| 113 | * Creates a new mm object and returns a handle to it. |
| 114 | */ |
| 115 | int |
| 116 | i915_gem_create_ioctl(struct drm_device *dev, void *data, |
| 117 | struct drm_file *file_priv) |
| 118 | { |
| 119 | struct drm_i915_gem_create *args = data; |
| 120 | struct drm_gem_object *obj; |
| 121 | int handle, ret; |
| 122 | |
| 123 | args->size = roundup(args->size, PAGE_SIZE); |
| 124 | |
| 125 | /* Allocate the new object */ |
| 126 | obj = drm_gem_object_alloc(dev, args->size); |
| 127 | if (obj == NULL) |
| 128 | return -ENOMEM; |
| 129 | |
| 130 | ret = drm_gem_handle_create(file_priv, obj, &handle); |
| 131 | mutex_lock(&dev->struct_mutex); |
| 132 | drm_gem_object_handle_unreference(obj); |
| 133 | mutex_unlock(&dev->struct_mutex); |
| 134 | |
| 135 | if (ret) |
| 136 | return ret; |
| 137 | |
| 138 | args->handle = handle; |
| 139 | |
| 140 | return 0; |
| 141 | } |
| 142 | |
| 143 | /** |
| 144 | * Reads data from the object referenced by handle. |
| 145 | * |
| 146 | * On error, the contents of *data are undefined. |
| 147 | */ |
| 148 | int |
| 149 | i915_gem_pread_ioctl(struct drm_device *dev, void *data, |
| 150 | struct drm_file *file_priv) |
| 151 | { |
| 152 | struct drm_i915_gem_pread *args = data; |
| 153 | struct drm_gem_object *obj; |
| 154 | struct drm_i915_gem_object *obj_priv; |
| 155 | ssize_t read; |
| 156 | loff_t offset; |
| 157 | int ret; |
| 158 | |
| 159 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
| 160 | if (obj == NULL) |
| 161 | return -EBADF; |
| 162 | obj_priv = obj->driver_private; |
| 163 | |
| 164 | /* Bounds check source. |
| 165 | * |
| 166 | * XXX: This could use review for overflow issues... |
| 167 | */ |
| 168 | if (args->offset > obj->size || args->size > obj->size || |
| 169 | args->offset + args->size > obj->size) { |
| 170 | drm_gem_object_unreference(obj); |
| 171 | return -EINVAL; |
| 172 | } |
| 173 | |
| 174 | mutex_lock(&dev->struct_mutex); |
| 175 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 176 | ret = i915_gem_object_set_cpu_read_domain_range(obj, args->offset, |
| 177 | args->size); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 178 | if (ret != 0) { |
| 179 | drm_gem_object_unreference(obj); |
| 180 | mutex_unlock(&dev->struct_mutex); |
Dave Airlie | e7d22bc | 2008-10-07 13:40:36 +1000 | [diff] [blame] | 181 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 182 | } |
| 183 | |
| 184 | offset = args->offset; |
| 185 | |
| 186 | read = vfs_read(obj->filp, (char __user *)(uintptr_t)args->data_ptr, |
| 187 | args->size, &offset); |
| 188 | if (read != args->size) { |
| 189 | drm_gem_object_unreference(obj); |
| 190 | mutex_unlock(&dev->struct_mutex); |
| 191 | if (read < 0) |
| 192 | return read; |
| 193 | else |
| 194 | return -EINVAL; |
| 195 | } |
| 196 | |
| 197 | drm_gem_object_unreference(obj); |
| 198 | mutex_unlock(&dev->struct_mutex); |
| 199 | |
| 200 | return 0; |
| 201 | } |
| 202 | |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 203 | /* This is the fast write path which cannot handle |
| 204 | * page faults in the source data |
Linus Torvalds | 9b7530cc | 2008-10-20 14:16:43 -0700 | [diff] [blame] | 205 | */ |
Linus Torvalds | 9b7530cc | 2008-10-20 14:16:43 -0700 | [diff] [blame] | 206 | |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 207 | static inline int |
| 208 | fast_user_write(struct io_mapping *mapping, |
| 209 | loff_t page_base, int page_offset, |
| 210 | char __user *user_data, |
| 211 | int length) |
| 212 | { |
| 213 | char *vaddr_atomic; |
| 214 | unsigned long unwritten; |
| 215 | |
| 216 | vaddr_atomic = io_mapping_map_atomic_wc(mapping, page_base); |
| 217 | unwritten = __copy_from_user_inatomic_nocache(vaddr_atomic + page_offset, |
| 218 | user_data, length); |
| 219 | io_mapping_unmap_atomic(vaddr_atomic); |
| 220 | if (unwritten) |
| 221 | return -EFAULT; |
Linus Torvalds | 9b7530cc | 2008-10-20 14:16:43 -0700 | [diff] [blame] | 222 | return 0; |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 223 | } |
| 224 | |
| 225 | /* Here's the write path which can sleep for |
| 226 | * page faults |
| 227 | */ |
| 228 | |
| 229 | static inline int |
| 230 | slow_user_write(struct io_mapping *mapping, |
| 231 | loff_t page_base, int page_offset, |
| 232 | char __user *user_data, |
| 233 | int length) |
| 234 | { |
| 235 | char __iomem *vaddr; |
| 236 | unsigned long unwritten; |
| 237 | |
| 238 | vaddr = io_mapping_map_wc(mapping, page_base); |
| 239 | if (vaddr == NULL) |
| 240 | return -EFAULT; |
| 241 | unwritten = __copy_from_user(vaddr + page_offset, |
| 242 | user_data, length); |
| 243 | io_mapping_unmap(vaddr); |
| 244 | if (unwritten) |
| 245 | return -EFAULT; |
| 246 | return 0; |
Linus Torvalds | 9b7530cc | 2008-10-20 14:16:43 -0700 | [diff] [blame] | 247 | } |
| 248 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 249 | static int |
| 250 | i915_gem_gtt_pwrite(struct drm_device *dev, struct drm_gem_object *obj, |
| 251 | struct drm_i915_gem_pwrite *args, |
| 252 | struct drm_file *file_priv) |
| 253 | { |
| 254 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 255 | drm_i915_private_t *dev_priv = dev->dev_private; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 256 | ssize_t remain; |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 257 | loff_t offset, page_base; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 258 | char __user *user_data; |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 259 | int page_offset, page_length; |
| 260 | int ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 261 | |
| 262 | user_data = (char __user *) (uintptr_t) args->data_ptr; |
| 263 | remain = args->size; |
| 264 | if (!access_ok(VERIFY_READ, user_data, remain)) |
| 265 | return -EFAULT; |
| 266 | |
| 267 | |
| 268 | mutex_lock(&dev->struct_mutex); |
| 269 | ret = i915_gem_object_pin(obj, 0); |
| 270 | if (ret) { |
| 271 | mutex_unlock(&dev->struct_mutex); |
| 272 | return ret; |
| 273 | } |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 274 | ret = i915_gem_object_set_to_gtt_domain(obj, 1); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 275 | if (ret) |
| 276 | goto fail; |
| 277 | |
| 278 | obj_priv = obj->driver_private; |
| 279 | offset = obj_priv->gtt_offset + args->offset; |
| 280 | obj_priv->dirty = 1; |
| 281 | |
| 282 | while (remain > 0) { |
| 283 | /* Operation in this page |
| 284 | * |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 285 | * page_base = page offset within aperture |
| 286 | * page_offset = offset within page |
| 287 | * page_length = bytes to copy for this page |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 288 | */ |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 289 | page_base = (offset & ~(PAGE_SIZE-1)); |
| 290 | page_offset = offset & (PAGE_SIZE-1); |
| 291 | page_length = remain; |
| 292 | if ((page_offset + remain) > PAGE_SIZE) |
| 293 | page_length = PAGE_SIZE - page_offset; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 294 | |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 295 | ret = fast_user_write (dev_priv->mm.gtt_mapping, page_base, |
| 296 | page_offset, user_data, page_length); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 297 | |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 298 | /* If we get a fault while copying data, then (presumably) our |
| 299 | * source page isn't available. In this case, use the |
| 300 | * non-atomic function |
| 301 | */ |
| 302 | if (ret) { |
| 303 | ret = slow_user_write (dev_priv->mm.gtt_mapping, |
| 304 | page_base, page_offset, |
| 305 | user_data, page_length); |
| 306 | if (ret) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 307 | goto fail; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 308 | } |
| 309 | |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 310 | remain -= page_length; |
| 311 | user_data += page_length; |
| 312 | offset += page_length; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 313 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 314 | |
| 315 | fail: |
| 316 | i915_gem_object_unpin(obj); |
| 317 | mutex_unlock(&dev->struct_mutex); |
| 318 | |
| 319 | return ret; |
| 320 | } |
| 321 | |
Eric Anholt | 3043c60 | 2008-10-02 12:24:47 -0700 | [diff] [blame] | 322 | static int |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 323 | i915_gem_shmem_pwrite(struct drm_device *dev, struct drm_gem_object *obj, |
| 324 | struct drm_i915_gem_pwrite *args, |
| 325 | struct drm_file *file_priv) |
| 326 | { |
| 327 | int ret; |
| 328 | loff_t offset; |
| 329 | ssize_t written; |
| 330 | |
| 331 | mutex_lock(&dev->struct_mutex); |
| 332 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 333 | ret = i915_gem_object_set_to_cpu_domain(obj, 1); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 334 | if (ret) { |
| 335 | mutex_unlock(&dev->struct_mutex); |
| 336 | return ret; |
| 337 | } |
| 338 | |
| 339 | offset = args->offset; |
| 340 | |
| 341 | written = vfs_write(obj->filp, |
| 342 | (char __user *)(uintptr_t) args->data_ptr, |
| 343 | args->size, &offset); |
| 344 | if (written != args->size) { |
| 345 | mutex_unlock(&dev->struct_mutex); |
| 346 | if (written < 0) |
| 347 | return written; |
| 348 | else |
| 349 | return -EINVAL; |
| 350 | } |
| 351 | |
| 352 | mutex_unlock(&dev->struct_mutex); |
| 353 | |
| 354 | return 0; |
| 355 | } |
| 356 | |
| 357 | /** |
| 358 | * Writes data to the object referenced by handle. |
| 359 | * |
| 360 | * On error, the contents of the buffer that were to be modified are undefined. |
| 361 | */ |
| 362 | int |
| 363 | i915_gem_pwrite_ioctl(struct drm_device *dev, void *data, |
| 364 | struct drm_file *file_priv) |
| 365 | { |
| 366 | struct drm_i915_gem_pwrite *args = data; |
| 367 | struct drm_gem_object *obj; |
| 368 | struct drm_i915_gem_object *obj_priv; |
| 369 | int ret = 0; |
| 370 | |
| 371 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
| 372 | if (obj == NULL) |
| 373 | return -EBADF; |
| 374 | obj_priv = obj->driver_private; |
| 375 | |
| 376 | /* Bounds check destination. |
| 377 | * |
| 378 | * XXX: This could use review for overflow issues... |
| 379 | */ |
| 380 | if (args->offset > obj->size || args->size > obj->size || |
| 381 | args->offset + args->size > obj->size) { |
| 382 | drm_gem_object_unreference(obj); |
| 383 | return -EINVAL; |
| 384 | } |
| 385 | |
| 386 | /* We can only do the GTT pwrite on untiled buffers, as otherwise |
| 387 | * it would end up going through the fenced access, and we'll get |
| 388 | * different detiling behavior between reading and writing. |
| 389 | * pread/pwrite currently are reading and writing from the CPU |
| 390 | * perspective, requiring manual detiling by the client. |
| 391 | */ |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 392 | if (obj_priv->phys_obj) |
| 393 | ret = i915_gem_phys_pwrite(dev, obj, args, file_priv); |
| 394 | else if (obj_priv->tiling_mode == I915_TILING_NONE && |
| 395 | dev->gtt_total != 0) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 396 | ret = i915_gem_gtt_pwrite(dev, obj, args, file_priv); |
| 397 | else |
| 398 | ret = i915_gem_shmem_pwrite(dev, obj, args, file_priv); |
| 399 | |
| 400 | #if WATCH_PWRITE |
| 401 | if (ret) |
| 402 | DRM_INFO("pwrite failed %d\n", ret); |
| 403 | #endif |
| 404 | |
| 405 | drm_gem_object_unreference(obj); |
| 406 | |
| 407 | return ret; |
| 408 | } |
| 409 | |
| 410 | /** |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 411 | * Called when user space prepares to use an object with the CPU, either |
| 412 | * through the mmap ioctl's mapping or a GTT mapping. |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 413 | */ |
| 414 | int |
| 415 | i915_gem_set_domain_ioctl(struct drm_device *dev, void *data, |
| 416 | struct drm_file *file_priv) |
| 417 | { |
| 418 | struct drm_i915_gem_set_domain *args = data; |
| 419 | struct drm_gem_object *obj; |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 420 | uint32_t read_domains = args->read_domains; |
| 421 | uint32_t write_domain = args->write_domain; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 422 | int ret; |
| 423 | |
| 424 | if (!(dev->driver->driver_features & DRIVER_GEM)) |
| 425 | return -ENODEV; |
| 426 | |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 427 | /* Only handle setting domains to types used by the CPU. */ |
| 428 | if (write_domain & ~(I915_GEM_DOMAIN_CPU | I915_GEM_DOMAIN_GTT)) |
| 429 | return -EINVAL; |
| 430 | |
| 431 | if (read_domains & ~(I915_GEM_DOMAIN_CPU | I915_GEM_DOMAIN_GTT)) |
| 432 | return -EINVAL; |
| 433 | |
| 434 | /* Having something in the write domain implies it's in the read |
| 435 | * domain, and only that read domain. Enforce that in the request. |
| 436 | */ |
| 437 | if (write_domain != 0 && read_domains != write_domain) |
| 438 | return -EINVAL; |
| 439 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 440 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
| 441 | if (obj == NULL) |
| 442 | return -EBADF; |
| 443 | |
| 444 | mutex_lock(&dev->struct_mutex); |
| 445 | #if WATCH_BUF |
| 446 | DRM_INFO("set_domain_ioctl %p(%d), %08x %08x\n", |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 447 | obj, obj->size, read_domains, write_domain); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 448 | #endif |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 449 | if (read_domains & I915_GEM_DOMAIN_GTT) { |
| 450 | ret = i915_gem_object_set_to_gtt_domain(obj, write_domain != 0); |
Eric Anholt | 0235439 | 2008-11-26 13:58:13 -0800 | [diff] [blame] | 451 | |
| 452 | /* Silently promote "you're not bound, there was nothing to do" |
| 453 | * to success, since the client was just asking us to |
| 454 | * make sure everything was done. |
| 455 | */ |
| 456 | if (ret == -EINVAL) |
| 457 | ret = 0; |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 458 | } else { |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 459 | ret = i915_gem_object_set_to_cpu_domain(obj, write_domain != 0); |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 460 | } |
| 461 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 462 | drm_gem_object_unreference(obj); |
| 463 | mutex_unlock(&dev->struct_mutex); |
| 464 | return ret; |
| 465 | } |
| 466 | |
| 467 | /** |
| 468 | * Called when user space has done writes to this buffer |
| 469 | */ |
| 470 | int |
| 471 | i915_gem_sw_finish_ioctl(struct drm_device *dev, void *data, |
| 472 | struct drm_file *file_priv) |
| 473 | { |
| 474 | struct drm_i915_gem_sw_finish *args = data; |
| 475 | struct drm_gem_object *obj; |
| 476 | struct drm_i915_gem_object *obj_priv; |
| 477 | int ret = 0; |
| 478 | |
| 479 | if (!(dev->driver->driver_features & DRIVER_GEM)) |
| 480 | return -ENODEV; |
| 481 | |
| 482 | mutex_lock(&dev->struct_mutex); |
| 483 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
| 484 | if (obj == NULL) { |
| 485 | mutex_unlock(&dev->struct_mutex); |
| 486 | return -EBADF; |
| 487 | } |
| 488 | |
| 489 | #if WATCH_BUF |
| 490 | DRM_INFO("%s: sw_finish %d (%p %d)\n", |
| 491 | __func__, args->handle, obj, obj->size); |
| 492 | #endif |
| 493 | obj_priv = obj->driver_private; |
| 494 | |
| 495 | /* Pinned buffers may be scanout, so flush the cache */ |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 496 | if (obj_priv->pin_count) |
| 497 | i915_gem_object_flush_cpu_write_domain(obj); |
| 498 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 499 | drm_gem_object_unreference(obj); |
| 500 | mutex_unlock(&dev->struct_mutex); |
| 501 | return ret; |
| 502 | } |
| 503 | |
| 504 | /** |
| 505 | * Maps the contents of an object, returning the address it is mapped |
| 506 | * into. |
| 507 | * |
| 508 | * While the mapping holds a reference on the contents of the object, it doesn't |
| 509 | * imply a ref on the object itself. |
| 510 | */ |
| 511 | int |
| 512 | i915_gem_mmap_ioctl(struct drm_device *dev, void *data, |
| 513 | struct drm_file *file_priv) |
| 514 | { |
| 515 | struct drm_i915_gem_mmap *args = data; |
| 516 | struct drm_gem_object *obj; |
| 517 | loff_t offset; |
| 518 | unsigned long addr; |
| 519 | |
| 520 | if (!(dev->driver->driver_features & DRIVER_GEM)) |
| 521 | return -ENODEV; |
| 522 | |
| 523 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
| 524 | if (obj == NULL) |
| 525 | return -EBADF; |
| 526 | |
| 527 | offset = args->offset; |
| 528 | |
| 529 | down_write(¤t->mm->mmap_sem); |
| 530 | addr = do_mmap(obj->filp, 0, args->size, |
| 531 | PROT_READ | PROT_WRITE, MAP_SHARED, |
| 532 | args->offset); |
| 533 | up_write(¤t->mm->mmap_sem); |
| 534 | mutex_lock(&dev->struct_mutex); |
| 535 | drm_gem_object_unreference(obj); |
| 536 | mutex_unlock(&dev->struct_mutex); |
| 537 | if (IS_ERR((void *)addr)) |
| 538 | return addr; |
| 539 | |
| 540 | args->addr_ptr = (uint64_t) addr; |
| 541 | |
| 542 | return 0; |
| 543 | } |
| 544 | |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 545 | /** |
| 546 | * i915_gem_fault - fault a page into the GTT |
| 547 | * vma: VMA in question |
| 548 | * vmf: fault info |
| 549 | * |
| 550 | * The fault handler is set up by drm_gem_mmap() when a object is GTT mapped |
| 551 | * from userspace. The fault handler takes care of binding the object to |
| 552 | * the GTT (if needed), allocating and programming a fence register (again, |
| 553 | * only if needed based on whether the old reg is still valid or the object |
| 554 | * is tiled) and inserting a new PTE into the faulting process. |
| 555 | * |
| 556 | * Note that the faulting process may involve evicting existing objects |
| 557 | * from the GTT and/or fence registers to make room. So performance may |
| 558 | * suffer if the GTT working set is large or there are few fence registers |
| 559 | * left. |
| 560 | */ |
| 561 | int i915_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf) |
| 562 | { |
| 563 | struct drm_gem_object *obj = vma->vm_private_data; |
| 564 | struct drm_device *dev = obj->dev; |
| 565 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 566 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 567 | pgoff_t page_offset; |
| 568 | unsigned long pfn; |
| 569 | int ret = 0; |
| 570 | |
| 571 | /* We don't use vmf->pgoff since that has the fake offset */ |
| 572 | page_offset = ((unsigned long)vmf->virtual_address - vma->vm_start) >> |
| 573 | PAGE_SHIFT; |
| 574 | |
| 575 | /* Now bind it into the GTT if needed */ |
| 576 | mutex_lock(&dev->struct_mutex); |
| 577 | if (!obj_priv->gtt_space) { |
| 578 | ret = i915_gem_object_bind_to_gtt(obj, obj_priv->gtt_alignment); |
| 579 | if (ret) { |
| 580 | mutex_unlock(&dev->struct_mutex); |
| 581 | return VM_FAULT_SIGBUS; |
| 582 | } |
| 583 | list_add(&obj_priv->list, &dev_priv->mm.inactive_list); |
| 584 | } |
| 585 | |
| 586 | /* Need a new fence register? */ |
| 587 | if (obj_priv->fence_reg == I915_FENCE_REG_NONE && |
| 588 | obj_priv->tiling_mode != I915_TILING_NONE) |
| 589 | i915_gem_object_get_fence_reg(obj); |
| 590 | |
| 591 | pfn = ((dev->agp->base + obj_priv->gtt_offset) >> PAGE_SHIFT) + |
| 592 | page_offset; |
| 593 | |
| 594 | /* Finally, remap it using the new GTT offset */ |
| 595 | ret = vm_insert_pfn(vma, (unsigned long)vmf->virtual_address, pfn); |
| 596 | |
| 597 | mutex_unlock(&dev->struct_mutex); |
| 598 | |
| 599 | switch (ret) { |
| 600 | case -ENOMEM: |
| 601 | case -EAGAIN: |
| 602 | return VM_FAULT_OOM; |
| 603 | case -EFAULT: |
| 604 | case -EBUSY: |
| 605 | DRM_ERROR("can't insert pfn?? fault or busy...\n"); |
| 606 | return VM_FAULT_SIGBUS; |
| 607 | default: |
| 608 | return VM_FAULT_NOPAGE; |
| 609 | } |
| 610 | } |
| 611 | |
| 612 | /** |
| 613 | * i915_gem_create_mmap_offset - create a fake mmap offset for an object |
| 614 | * @obj: obj in question |
| 615 | * |
| 616 | * GEM memory mapping works by handing back to userspace a fake mmap offset |
| 617 | * it can use in a subsequent mmap(2) call. The DRM core code then looks |
| 618 | * up the object based on the offset and sets up the various memory mapping |
| 619 | * structures. |
| 620 | * |
| 621 | * This routine allocates and attaches a fake offset for @obj. |
| 622 | */ |
| 623 | static int |
| 624 | i915_gem_create_mmap_offset(struct drm_gem_object *obj) |
| 625 | { |
| 626 | struct drm_device *dev = obj->dev; |
| 627 | struct drm_gem_mm *mm = dev->mm_private; |
| 628 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 629 | struct drm_map_list *list; |
| 630 | struct drm_map *map; |
| 631 | int ret = 0; |
| 632 | |
| 633 | /* Set the object up for mmap'ing */ |
| 634 | list = &obj->map_list; |
| 635 | list->map = drm_calloc(1, sizeof(struct drm_map_list), |
| 636 | DRM_MEM_DRIVER); |
| 637 | if (!list->map) |
| 638 | return -ENOMEM; |
| 639 | |
| 640 | map = list->map; |
| 641 | map->type = _DRM_GEM; |
| 642 | map->size = obj->size; |
| 643 | map->handle = obj; |
| 644 | |
| 645 | /* Get a DRM GEM mmap offset allocated... */ |
| 646 | list->file_offset_node = drm_mm_search_free(&mm->offset_manager, |
| 647 | obj->size / PAGE_SIZE, 0, 0); |
| 648 | if (!list->file_offset_node) { |
| 649 | DRM_ERROR("failed to allocate offset for bo %d\n", obj->name); |
| 650 | ret = -ENOMEM; |
| 651 | goto out_free_list; |
| 652 | } |
| 653 | |
| 654 | list->file_offset_node = drm_mm_get_block(list->file_offset_node, |
| 655 | obj->size / PAGE_SIZE, 0); |
| 656 | if (!list->file_offset_node) { |
| 657 | ret = -ENOMEM; |
| 658 | goto out_free_list; |
| 659 | } |
| 660 | |
| 661 | list->hash.key = list->file_offset_node->start; |
| 662 | if (drm_ht_insert_item(&mm->offset_hash, &list->hash)) { |
| 663 | DRM_ERROR("failed to add to map hash\n"); |
| 664 | goto out_free_mm; |
| 665 | } |
| 666 | |
| 667 | /* By now we should be all set, any drm_mmap request on the offset |
| 668 | * below will get to our mmap & fault handler */ |
| 669 | obj_priv->mmap_offset = ((uint64_t) list->hash.key) << PAGE_SHIFT; |
| 670 | |
| 671 | return 0; |
| 672 | |
| 673 | out_free_mm: |
| 674 | drm_mm_put_block(list->file_offset_node); |
| 675 | out_free_list: |
| 676 | drm_free(list->map, sizeof(struct drm_map_list), DRM_MEM_DRIVER); |
| 677 | |
| 678 | return ret; |
| 679 | } |
| 680 | |
| 681 | /** |
| 682 | * i915_gem_get_gtt_alignment - return required GTT alignment for an object |
| 683 | * @obj: object to check |
| 684 | * |
| 685 | * Return the required GTT alignment for an object, taking into account |
| 686 | * potential fence register mapping if needed. |
| 687 | */ |
| 688 | static uint32_t |
| 689 | i915_gem_get_gtt_alignment(struct drm_gem_object *obj) |
| 690 | { |
| 691 | struct drm_device *dev = obj->dev; |
| 692 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 693 | int start, i; |
| 694 | |
| 695 | /* |
| 696 | * Minimum alignment is 4k (GTT page size), but might be greater |
| 697 | * if a fence register is needed for the object. |
| 698 | */ |
| 699 | if (IS_I965G(dev) || obj_priv->tiling_mode == I915_TILING_NONE) |
| 700 | return 4096; |
| 701 | |
| 702 | /* |
| 703 | * Previous chips need to be aligned to the size of the smallest |
| 704 | * fence register that can contain the object. |
| 705 | */ |
| 706 | if (IS_I9XX(dev)) |
| 707 | start = 1024*1024; |
| 708 | else |
| 709 | start = 512*1024; |
| 710 | |
| 711 | for (i = start; i < obj->size; i <<= 1) |
| 712 | ; |
| 713 | |
| 714 | return i; |
| 715 | } |
| 716 | |
| 717 | /** |
| 718 | * i915_gem_mmap_gtt_ioctl - prepare an object for GTT mmap'ing |
| 719 | * @dev: DRM device |
| 720 | * @data: GTT mapping ioctl data |
| 721 | * @file_priv: GEM object info |
| 722 | * |
| 723 | * Simply returns the fake offset to userspace so it can mmap it. |
| 724 | * The mmap call will end up in drm_gem_mmap(), which will set things |
| 725 | * up so we can get faults in the handler above. |
| 726 | * |
| 727 | * The fault handler will take care of binding the object into the GTT |
| 728 | * (since it may have been evicted to make room for something), allocating |
| 729 | * a fence register, and mapping the appropriate aperture address into |
| 730 | * userspace. |
| 731 | */ |
| 732 | int |
| 733 | i915_gem_mmap_gtt_ioctl(struct drm_device *dev, void *data, |
| 734 | struct drm_file *file_priv) |
| 735 | { |
| 736 | struct drm_i915_gem_mmap_gtt *args = data; |
| 737 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 738 | struct drm_gem_object *obj; |
| 739 | struct drm_i915_gem_object *obj_priv; |
| 740 | int ret; |
| 741 | |
| 742 | if (!(dev->driver->driver_features & DRIVER_GEM)) |
| 743 | return -ENODEV; |
| 744 | |
| 745 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
| 746 | if (obj == NULL) |
| 747 | return -EBADF; |
| 748 | |
| 749 | mutex_lock(&dev->struct_mutex); |
| 750 | |
| 751 | obj_priv = obj->driver_private; |
| 752 | |
| 753 | if (!obj_priv->mmap_offset) { |
| 754 | ret = i915_gem_create_mmap_offset(obj); |
| 755 | if (ret) |
| 756 | return ret; |
| 757 | } |
| 758 | |
| 759 | args->offset = obj_priv->mmap_offset; |
| 760 | |
| 761 | obj_priv->gtt_alignment = i915_gem_get_gtt_alignment(obj); |
| 762 | |
| 763 | /* Make sure the alignment is correct for fence regs etc */ |
| 764 | if (obj_priv->agp_mem && |
| 765 | (obj_priv->gtt_offset & (obj_priv->gtt_alignment - 1))) { |
| 766 | drm_gem_object_unreference(obj); |
| 767 | mutex_unlock(&dev->struct_mutex); |
| 768 | return -EINVAL; |
| 769 | } |
| 770 | |
| 771 | /* |
| 772 | * Pull it into the GTT so that we have a page list (makes the |
| 773 | * initial fault faster and any subsequent flushing possible). |
| 774 | */ |
| 775 | if (!obj_priv->agp_mem) { |
| 776 | ret = i915_gem_object_bind_to_gtt(obj, obj_priv->gtt_alignment); |
| 777 | if (ret) { |
| 778 | drm_gem_object_unreference(obj); |
| 779 | mutex_unlock(&dev->struct_mutex); |
| 780 | return ret; |
| 781 | } |
| 782 | list_add(&obj_priv->list, &dev_priv->mm.inactive_list); |
| 783 | } |
| 784 | |
| 785 | drm_gem_object_unreference(obj); |
| 786 | mutex_unlock(&dev->struct_mutex); |
| 787 | |
| 788 | return 0; |
| 789 | } |
| 790 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 791 | static void |
| 792 | i915_gem_object_free_page_list(struct drm_gem_object *obj) |
| 793 | { |
| 794 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 795 | int page_count = obj->size / PAGE_SIZE; |
| 796 | int i; |
| 797 | |
| 798 | if (obj_priv->page_list == NULL) |
| 799 | return; |
| 800 | |
| 801 | |
| 802 | for (i = 0; i < page_count; i++) |
| 803 | if (obj_priv->page_list[i] != NULL) { |
| 804 | if (obj_priv->dirty) |
| 805 | set_page_dirty(obj_priv->page_list[i]); |
| 806 | mark_page_accessed(obj_priv->page_list[i]); |
| 807 | page_cache_release(obj_priv->page_list[i]); |
| 808 | } |
| 809 | obj_priv->dirty = 0; |
| 810 | |
| 811 | drm_free(obj_priv->page_list, |
| 812 | page_count * sizeof(struct page *), |
| 813 | DRM_MEM_DRIVER); |
| 814 | obj_priv->page_list = NULL; |
| 815 | } |
| 816 | |
| 817 | static void |
Eric Anholt | ce44b0e | 2008-11-06 16:00:31 -0800 | [diff] [blame] | 818 | i915_gem_object_move_to_active(struct drm_gem_object *obj, uint32_t seqno) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 819 | { |
| 820 | struct drm_device *dev = obj->dev; |
| 821 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 822 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 823 | |
| 824 | /* Add a reference if we're newly entering the active list. */ |
| 825 | if (!obj_priv->active) { |
| 826 | drm_gem_object_reference(obj); |
| 827 | obj_priv->active = 1; |
| 828 | } |
| 829 | /* Move from whatever list we were on to the tail of execution. */ |
| 830 | list_move_tail(&obj_priv->list, |
| 831 | &dev_priv->mm.active_list); |
Eric Anholt | ce44b0e | 2008-11-06 16:00:31 -0800 | [diff] [blame] | 832 | obj_priv->last_rendering_seqno = seqno; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 833 | } |
| 834 | |
Eric Anholt | ce44b0e | 2008-11-06 16:00:31 -0800 | [diff] [blame] | 835 | static void |
| 836 | i915_gem_object_move_to_flushing(struct drm_gem_object *obj) |
| 837 | { |
| 838 | struct drm_device *dev = obj->dev; |
| 839 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 840 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 841 | |
| 842 | BUG_ON(!obj_priv->active); |
| 843 | list_move_tail(&obj_priv->list, &dev_priv->mm.flushing_list); |
| 844 | obj_priv->last_rendering_seqno = 0; |
| 845 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 846 | |
| 847 | static void |
| 848 | i915_gem_object_move_to_inactive(struct drm_gem_object *obj) |
| 849 | { |
| 850 | struct drm_device *dev = obj->dev; |
| 851 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 852 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 853 | |
| 854 | i915_verify_inactive(dev, __FILE__, __LINE__); |
| 855 | if (obj_priv->pin_count != 0) |
| 856 | list_del_init(&obj_priv->list); |
| 857 | else |
| 858 | list_move_tail(&obj_priv->list, &dev_priv->mm.inactive_list); |
| 859 | |
Eric Anholt | ce44b0e | 2008-11-06 16:00:31 -0800 | [diff] [blame] | 860 | obj_priv->last_rendering_seqno = 0; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 861 | if (obj_priv->active) { |
| 862 | obj_priv->active = 0; |
| 863 | drm_gem_object_unreference(obj); |
| 864 | } |
| 865 | i915_verify_inactive(dev, __FILE__, __LINE__); |
| 866 | } |
| 867 | |
| 868 | /** |
| 869 | * Creates a new sequence number, emitting a write of it to the status page |
| 870 | * plus an interrupt, which will trigger i915_user_interrupt_handler. |
| 871 | * |
| 872 | * Must be called with struct_lock held. |
| 873 | * |
| 874 | * Returned sequence numbers are nonzero on success. |
| 875 | */ |
| 876 | static uint32_t |
| 877 | i915_add_request(struct drm_device *dev, uint32_t flush_domains) |
| 878 | { |
| 879 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 880 | struct drm_i915_gem_request *request; |
| 881 | uint32_t seqno; |
| 882 | int was_empty; |
| 883 | RING_LOCALS; |
| 884 | |
| 885 | request = drm_calloc(1, sizeof(*request), DRM_MEM_DRIVER); |
| 886 | if (request == NULL) |
| 887 | return 0; |
| 888 | |
| 889 | /* Grab the seqno we're going to make this request be, and bump the |
| 890 | * next (skipping 0 so it can be the reserved no-seqno value). |
| 891 | */ |
| 892 | seqno = dev_priv->mm.next_gem_seqno; |
| 893 | dev_priv->mm.next_gem_seqno++; |
| 894 | if (dev_priv->mm.next_gem_seqno == 0) |
| 895 | dev_priv->mm.next_gem_seqno++; |
| 896 | |
| 897 | BEGIN_LP_RING(4); |
| 898 | OUT_RING(MI_STORE_DWORD_INDEX); |
| 899 | OUT_RING(I915_GEM_HWS_INDEX << MI_STORE_DWORD_INDEX_SHIFT); |
| 900 | OUT_RING(seqno); |
| 901 | |
| 902 | OUT_RING(MI_USER_INTERRUPT); |
| 903 | ADVANCE_LP_RING(); |
| 904 | |
| 905 | DRM_DEBUG("%d\n", seqno); |
| 906 | |
| 907 | request->seqno = seqno; |
| 908 | request->emitted_jiffies = jiffies; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 909 | was_empty = list_empty(&dev_priv->mm.request_list); |
| 910 | list_add_tail(&request->list, &dev_priv->mm.request_list); |
| 911 | |
Eric Anholt | ce44b0e | 2008-11-06 16:00:31 -0800 | [diff] [blame] | 912 | /* Associate any objects on the flushing list matching the write |
| 913 | * domain we're flushing with our flush. |
| 914 | */ |
| 915 | if (flush_domains != 0) { |
| 916 | struct drm_i915_gem_object *obj_priv, *next; |
| 917 | |
| 918 | list_for_each_entry_safe(obj_priv, next, |
| 919 | &dev_priv->mm.flushing_list, list) { |
| 920 | struct drm_gem_object *obj = obj_priv->obj; |
| 921 | |
| 922 | if ((obj->write_domain & flush_domains) == |
| 923 | obj->write_domain) { |
| 924 | obj->write_domain = 0; |
| 925 | i915_gem_object_move_to_active(obj, seqno); |
| 926 | } |
| 927 | } |
| 928 | |
| 929 | } |
| 930 | |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 931 | if (was_empty && !dev_priv->mm.suspended) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 932 | schedule_delayed_work(&dev_priv->mm.retire_work, HZ); |
| 933 | return seqno; |
| 934 | } |
| 935 | |
| 936 | /** |
| 937 | * Command execution barrier |
| 938 | * |
| 939 | * Ensures that all commands in the ring are finished |
| 940 | * before signalling the CPU |
| 941 | */ |
Eric Anholt | 3043c60 | 2008-10-02 12:24:47 -0700 | [diff] [blame] | 942 | static uint32_t |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 943 | i915_retire_commands(struct drm_device *dev) |
| 944 | { |
| 945 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 946 | uint32_t cmd = MI_FLUSH | MI_NO_WRITE_FLUSH; |
| 947 | uint32_t flush_domains = 0; |
| 948 | RING_LOCALS; |
| 949 | |
| 950 | /* The sampler always gets flushed on i965 (sigh) */ |
| 951 | if (IS_I965G(dev)) |
| 952 | flush_domains |= I915_GEM_DOMAIN_SAMPLER; |
| 953 | BEGIN_LP_RING(2); |
| 954 | OUT_RING(cmd); |
| 955 | OUT_RING(0); /* noop */ |
| 956 | ADVANCE_LP_RING(); |
| 957 | return flush_domains; |
| 958 | } |
| 959 | |
| 960 | /** |
| 961 | * Moves buffers associated only with the given active seqno from the active |
| 962 | * to inactive list, potentially freeing them. |
| 963 | */ |
| 964 | static void |
| 965 | i915_gem_retire_request(struct drm_device *dev, |
| 966 | struct drm_i915_gem_request *request) |
| 967 | { |
| 968 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 969 | |
| 970 | /* Move any buffers on the active list that are no longer referenced |
| 971 | * by the ringbuffer to the flushing/inactive lists as appropriate. |
| 972 | */ |
| 973 | while (!list_empty(&dev_priv->mm.active_list)) { |
| 974 | struct drm_gem_object *obj; |
| 975 | struct drm_i915_gem_object *obj_priv; |
| 976 | |
| 977 | obj_priv = list_first_entry(&dev_priv->mm.active_list, |
| 978 | struct drm_i915_gem_object, |
| 979 | list); |
| 980 | obj = obj_priv->obj; |
| 981 | |
| 982 | /* If the seqno being retired doesn't match the oldest in the |
| 983 | * list, then the oldest in the list must still be newer than |
| 984 | * this seqno. |
| 985 | */ |
| 986 | if (obj_priv->last_rendering_seqno != request->seqno) |
| 987 | return; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 988 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 989 | #if WATCH_LRU |
| 990 | DRM_INFO("%s: retire %d moves to inactive list %p\n", |
| 991 | __func__, request->seqno, obj); |
| 992 | #endif |
| 993 | |
Eric Anholt | ce44b0e | 2008-11-06 16:00:31 -0800 | [diff] [blame] | 994 | if (obj->write_domain != 0) |
| 995 | i915_gem_object_move_to_flushing(obj); |
| 996 | else |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 997 | i915_gem_object_move_to_inactive(obj); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 998 | } |
| 999 | } |
| 1000 | |
| 1001 | /** |
| 1002 | * Returns true if seq1 is later than seq2. |
| 1003 | */ |
| 1004 | static int |
| 1005 | i915_seqno_passed(uint32_t seq1, uint32_t seq2) |
| 1006 | { |
| 1007 | return (int32_t)(seq1 - seq2) >= 0; |
| 1008 | } |
| 1009 | |
| 1010 | uint32_t |
| 1011 | i915_get_gem_seqno(struct drm_device *dev) |
| 1012 | { |
| 1013 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 1014 | |
| 1015 | return READ_HWSP(dev_priv, I915_GEM_HWS_INDEX); |
| 1016 | } |
| 1017 | |
| 1018 | /** |
| 1019 | * This function clears the request list as sequence numbers are passed. |
| 1020 | */ |
| 1021 | void |
| 1022 | i915_gem_retire_requests(struct drm_device *dev) |
| 1023 | { |
| 1024 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 1025 | uint32_t seqno; |
| 1026 | |
| 1027 | seqno = i915_get_gem_seqno(dev); |
| 1028 | |
| 1029 | while (!list_empty(&dev_priv->mm.request_list)) { |
| 1030 | struct drm_i915_gem_request *request; |
| 1031 | uint32_t retiring_seqno; |
| 1032 | |
| 1033 | request = list_first_entry(&dev_priv->mm.request_list, |
| 1034 | struct drm_i915_gem_request, |
| 1035 | list); |
| 1036 | retiring_seqno = request->seqno; |
| 1037 | |
| 1038 | if (i915_seqno_passed(seqno, retiring_seqno) || |
| 1039 | dev_priv->mm.wedged) { |
| 1040 | i915_gem_retire_request(dev, request); |
| 1041 | |
| 1042 | list_del(&request->list); |
| 1043 | drm_free(request, sizeof(*request), DRM_MEM_DRIVER); |
| 1044 | } else |
| 1045 | break; |
| 1046 | } |
| 1047 | } |
| 1048 | |
| 1049 | void |
| 1050 | i915_gem_retire_work_handler(struct work_struct *work) |
| 1051 | { |
| 1052 | drm_i915_private_t *dev_priv; |
| 1053 | struct drm_device *dev; |
| 1054 | |
| 1055 | dev_priv = container_of(work, drm_i915_private_t, |
| 1056 | mm.retire_work.work); |
| 1057 | dev = dev_priv->dev; |
| 1058 | |
| 1059 | mutex_lock(&dev->struct_mutex); |
| 1060 | i915_gem_retire_requests(dev); |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 1061 | if (!dev_priv->mm.suspended && |
| 1062 | !list_empty(&dev_priv->mm.request_list)) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1063 | schedule_delayed_work(&dev_priv->mm.retire_work, HZ); |
| 1064 | mutex_unlock(&dev->struct_mutex); |
| 1065 | } |
| 1066 | |
| 1067 | /** |
| 1068 | * Waits for a sequence number to be signaled, and cleans up the |
| 1069 | * request and object lists appropriately for that event. |
| 1070 | */ |
Eric Anholt | 3043c60 | 2008-10-02 12:24:47 -0700 | [diff] [blame] | 1071 | static int |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1072 | i915_wait_request(struct drm_device *dev, uint32_t seqno) |
| 1073 | { |
| 1074 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 1075 | int ret = 0; |
| 1076 | |
| 1077 | BUG_ON(seqno == 0); |
| 1078 | |
| 1079 | if (!i915_seqno_passed(i915_get_gem_seqno(dev), seqno)) { |
| 1080 | dev_priv->mm.waiting_gem_seqno = seqno; |
| 1081 | i915_user_irq_get(dev); |
| 1082 | ret = wait_event_interruptible(dev_priv->irq_queue, |
| 1083 | i915_seqno_passed(i915_get_gem_seqno(dev), |
| 1084 | seqno) || |
| 1085 | dev_priv->mm.wedged); |
| 1086 | i915_user_irq_put(dev); |
| 1087 | dev_priv->mm.waiting_gem_seqno = 0; |
| 1088 | } |
| 1089 | if (dev_priv->mm.wedged) |
| 1090 | ret = -EIO; |
| 1091 | |
| 1092 | if (ret && ret != -ERESTARTSYS) |
| 1093 | DRM_ERROR("%s returns %d (awaiting %d at %d)\n", |
| 1094 | __func__, ret, seqno, i915_get_gem_seqno(dev)); |
| 1095 | |
| 1096 | /* Directly dispatch request retiring. While we have the work queue |
| 1097 | * to handle this, the waiter on a request often wants an associated |
| 1098 | * buffer to have made it to the inactive list, and we would need |
| 1099 | * a separate wait queue to handle that. |
| 1100 | */ |
| 1101 | if (ret == 0) |
| 1102 | i915_gem_retire_requests(dev); |
| 1103 | |
| 1104 | return ret; |
| 1105 | } |
| 1106 | |
| 1107 | static void |
| 1108 | i915_gem_flush(struct drm_device *dev, |
| 1109 | uint32_t invalidate_domains, |
| 1110 | uint32_t flush_domains) |
| 1111 | { |
| 1112 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 1113 | uint32_t cmd; |
| 1114 | RING_LOCALS; |
| 1115 | |
| 1116 | #if WATCH_EXEC |
| 1117 | DRM_INFO("%s: invalidate %08x flush %08x\n", __func__, |
| 1118 | invalidate_domains, flush_domains); |
| 1119 | #endif |
| 1120 | |
| 1121 | if (flush_domains & I915_GEM_DOMAIN_CPU) |
| 1122 | drm_agp_chipset_flush(dev); |
| 1123 | |
| 1124 | if ((invalidate_domains | flush_domains) & ~(I915_GEM_DOMAIN_CPU | |
| 1125 | I915_GEM_DOMAIN_GTT)) { |
| 1126 | /* |
| 1127 | * read/write caches: |
| 1128 | * |
| 1129 | * I915_GEM_DOMAIN_RENDER is always invalidated, but is |
| 1130 | * only flushed if MI_NO_WRITE_FLUSH is unset. On 965, it is |
| 1131 | * also flushed at 2d versus 3d pipeline switches. |
| 1132 | * |
| 1133 | * read-only caches: |
| 1134 | * |
| 1135 | * I915_GEM_DOMAIN_SAMPLER is flushed on pre-965 if |
| 1136 | * MI_READ_FLUSH is set, and is always flushed on 965. |
| 1137 | * |
| 1138 | * I915_GEM_DOMAIN_COMMAND may not exist? |
| 1139 | * |
| 1140 | * I915_GEM_DOMAIN_INSTRUCTION, which exists on 965, is |
| 1141 | * invalidated when MI_EXE_FLUSH is set. |
| 1142 | * |
| 1143 | * I915_GEM_DOMAIN_VERTEX, which exists on 965, is |
| 1144 | * invalidated with every MI_FLUSH. |
| 1145 | * |
| 1146 | * TLBs: |
| 1147 | * |
| 1148 | * On 965, TLBs associated with I915_GEM_DOMAIN_COMMAND |
| 1149 | * and I915_GEM_DOMAIN_CPU in are invalidated at PTE write and |
| 1150 | * I915_GEM_DOMAIN_RENDER and I915_GEM_DOMAIN_SAMPLER |
| 1151 | * are flushed at any MI_FLUSH. |
| 1152 | */ |
| 1153 | |
| 1154 | cmd = MI_FLUSH | MI_NO_WRITE_FLUSH; |
| 1155 | if ((invalidate_domains|flush_domains) & |
| 1156 | I915_GEM_DOMAIN_RENDER) |
| 1157 | cmd &= ~MI_NO_WRITE_FLUSH; |
| 1158 | if (!IS_I965G(dev)) { |
| 1159 | /* |
| 1160 | * On the 965, the sampler cache always gets flushed |
| 1161 | * and this bit is reserved. |
| 1162 | */ |
| 1163 | if (invalidate_domains & I915_GEM_DOMAIN_SAMPLER) |
| 1164 | cmd |= MI_READ_FLUSH; |
| 1165 | } |
| 1166 | if (invalidate_domains & I915_GEM_DOMAIN_INSTRUCTION) |
| 1167 | cmd |= MI_EXE_FLUSH; |
| 1168 | |
| 1169 | #if WATCH_EXEC |
| 1170 | DRM_INFO("%s: queue flush %08x to ring\n", __func__, cmd); |
| 1171 | #endif |
| 1172 | BEGIN_LP_RING(2); |
| 1173 | OUT_RING(cmd); |
| 1174 | OUT_RING(0); /* noop */ |
| 1175 | ADVANCE_LP_RING(); |
| 1176 | } |
| 1177 | } |
| 1178 | |
| 1179 | /** |
| 1180 | * Ensures that all rendering to the object has completed and the object is |
| 1181 | * safe to unbind from the GTT or access from the CPU. |
| 1182 | */ |
| 1183 | static int |
| 1184 | i915_gem_object_wait_rendering(struct drm_gem_object *obj) |
| 1185 | { |
| 1186 | struct drm_device *dev = obj->dev; |
| 1187 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 1188 | int ret; |
| 1189 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 1190 | /* This function only exists to support waiting for existing rendering, |
| 1191 | * not for emitting required flushes. |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1192 | */ |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 1193 | BUG_ON((obj->write_domain & I915_GEM_GPU_DOMAINS) != 0); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1194 | |
| 1195 | /* If there is rendering queued on the buffer being evicted, wait for |
| 1196 | * it. |
| 1197 | */ |
| 1198 | if (obj_priv->active) { |
| 1199 | #if WATCH_BUF |
| 1200 | DRM_INFO("%s: object %p wait for seqno %08x\n", |
| 1201 | __func__, obj, obj_priv->last_rendering_seqno); |
| 1202 | #endif |
| 1203 | ret = i915_wait_request(dev, obj_priv->last_rendering_seqno); |
| 1204 | if (ret != 0) |
| 1205 | return ret; |
| 1206 | } |
| 1207 | |
| 1208 | return 0; |
| 1209 | } |
| 1210 | |
| 1211 | /** |
| 1212 | * Unbinds an object from the GTT aperture. |
| 1213 | */ |
| 1214 | static int |
| 1215 | i915_gem_object_unbind(struct drm_gem_object *obj) |
| 1216 | { |
| 1217 | struct drm_device *dev = obj->dev; |
| 1218 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1219 | loff_t offset; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1220 | int ret = 0; |
| 1221 | |
| 1222 | #if WATCH_BUF |
| 1223 | DRM_INFO("%s:%d %p\n", __func__, __LINE__, obj); |
| 1224 | DRM_INFO("gtt_space %p\n", obj_priv->gtt_space); |
| 1225 | #endif |
| 1226 | if (obj_priv->gtt_space == NULL) |
| 1227 | return 0; |
| 1228 | |
| 1229 | if (obj_priv->pin_count != 0) { |
| 1230 | DRM_ERROR("Attempting to unbind pinned buffer\n"); |
| 1231 | return -EINVAL; |
| 1232 | } |
| 1233 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1234 | /* Move the object to the CPU domain to ensure that |
| 1235 | * any possible CPU writes while it's not in the GTT |
| 1236 | * are flushed when we go to remap it. This will |
| 1237 | * also ensure that all pending GPU writes are finished |
| 1238 | * before we unbind. |
| 1239 | */ |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 1240 | ret = i915_gem_object_set_to_cpu_domain(obj, 1); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1241 | if (ret) { |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 1242 | if (ret != -ERESTARTSYS) |
| 1243 | DRM_ERROR("set_domain failed: %d\n", ret); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1244 | return ret; |
| 1245 | } |
| 1246 | |
| 1247 | if (obj_priv->agp_mem != NULL) { |
| 1248 | drm_unbind_agp(obj_priv->agp_mem); |
| 1249 | drm_free_agp(obj_priv->agp_mem, obj->size / PAGE_SIZE); |
| 1250 | obj_priv->agp_mem = NULL; |
| 1251 | } |
| 1252 | |
| 1253 | BUG_ON(obj_priv->active); |
| 1254 | |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1255 | /* blow away mappings if mapped through GTT */ |
| 1256 | offset = ((loff_t) obj->map_list.hash.key) << PAGE_SHIFT; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 1257 | if (dev->dev_mapping) |
| 1258 | unmap_mapping_range(dev->dev_mapping, offset, obj->size, 1); |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1259 | |
| 1260 | if (obj_priv->fence_reg != I915_FENCE_REG_NONE) |
| 1261 | i915_gem_clear_fence_reg(obj); |
| 1262 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1263 | i915_gem_object_free_page_list(obj); |
| 1264 | |
| 1265 | if (obj_priv->gtt_space) { |
| 1266 | atomic_dec(&dev->gtt_count); |
| 1267 | atomic_sub(obj->size, &dev->gtt_memory); |
| 1268 | |
| 1269 | drm_mm_put_block(obj_priv->gtt_space); |
| 1270 | obj_priv->gtt_space = NULL; |
| 1271 | } |
| 1272 | |
| 1273 | /* Remove ourselves from the LRU list if present. */ |
| 1274 | if (!list_empty(&obj_priv->list)) |
| 1275 | list_del_init(&obj_priv->list); |
| 1276 | |
| 1277 | return 0; |
| 1278 | } |
| 1279 | |
| 1280 | static int |
| 1281 | i915_gem_evict_something(struct drm_device *dev) |
| 1282 | { |
| 1283 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 1284 | struct drm_gem_object *obj; |
| 1285 | struct drm_i915_gem_object *obj_priv; |
| 1286 | int ret = 0; |
| 1287 | |
| 1288 | for (;;) { |
| 1289 | /* If there's an inactive buffer available now, grab it |
| 1290 | * and be done. |
| 1291 | */ |
| 1292 | if (!list_empty(&dev_priv->mm.inactive_list)) { |
| 1293 | obj_priv = list_first_entry(&dev_priv->mm.inactive_list, |
| 1294 | struct drm_i915_gem_object, |
| 1295 | list); |
| 1296 | obj = obj_priv->obj; |
| 1297 | BUG_ON(obj_priv->pin_count != 0); |
| 1298 | #if WATCH_LRU |
| 1299 | DRM_INFO("%s: evicting %p\n", __func__, obj); |
| 1300 | #endif |
| 1301 | BUG_ON(obj_priv->active); |
| 1302 | |
| 1303 | /* Wait on the rendering and unbind the buffer. */ |
| 1304 | ret = i915_gem_object_unbind(obj); |
| 1305 | break; |
| 1306 | } |
| 1307 | |
| 1308 | /* If we didn't get anything, but the ring is still processing |
| 1309 | * things, wait for one of those things to finish and hopefully |
| 1310 | * leave us a buffer to evict. |
| 1311 | */ |
| 1312 | if (!list_empty(&dev_priv->mm.request_list)) { |
| 1313 | struct drm_i915_gem_request *request; |
| 1314 | |
| 1315 | request = list_first_entry(&dev_priv->mm.request_list, |
| 1316 | struct drm_i915_gem_request, |
| 1317 | list); |
| 1318 | |
| 1319 | ret = i915_wait_request(dev, request->seqno); |
| 1320 | if (ret) |
| 1321 | break; |
| 1322 | |
| 1323 | /* if waiting caused an object to become inactive, |
| 1324 | * then loop around and wait for it. Otherwise, we |
| 1325 | * assume that waiting freed and unbound something, |
| 1326 | * so there should now be some space in the GTT |
| 1327 | */ |
| 1328 | if (!list_empty(&dev_priv->mm.inactive_list)) |
| 1329 | continue; |
| 1330 | break; |
| 1331 | } |
| 1332 | |
| 1333 | /* If we didn't have anything on the request list but there |
| 1334 | * are buffers awaiting a flush, emit one and try again. |
| 1335 | * When we wait on it, those buffers waiting for that flush |
| 1336 | * will get moved to inactive. |
| 1337 | */ |
| 1338 | if (!list_empty(&dev_priv->mm.flushing_list)) { |
| 1339 | obj_priv = list_first_entry(&dev_priv->mm.flushing_list, |
| 1340 | struct drm_i915_gem_object, |
| 1341 | list); |
| 1342 | obj = obj_priv->obj; |
| 1343 | |
| 1344 | i915_gem_flush(dev, |
| 1345 | obj->write_domain, |
| 1346 | obj->write_domain); |
| 1347 | i915_add_request(dev, obj->write_domain); |
| 1348 | |
| 1349 | obj = NULL; |
| 1350 | continue; |
| 1351 | } |
| 1352 | |
| 1353 | DRM_ERROR("inactive empty %d request empty %d " |
| 1354 | "flushing empty %d\n", |
| 1355 | list_empty(&dev_priv->mm.inactive_list), |
| 1356 | list_empty(&dev_priv->mm.request_list), |
| 1357 | list_empty(&dev_priv->mm.flushing_list)); |
| 1358 | /* If we didn't do any of the above, there's nothing to be done |
| 1359 | * and we just can't fit it in. |
| 1360 | */ |
| 1361 | return -ENOMEM; |
| 1362 | } |
| 1363 | return ret; |
| 1364 | } |
| 1365 | |
| 1366 | static int |
Keith Packard | ac94a96 | 2008-11-20 23:30:27 -0800 | [diff] [blame] | 1367 | i915_gem_evict_everything(struct drm_device *dev) |
| 1368 | { |
| 1369 | int ret; |
| 1370 | |
| 1371 | for (;;) { |
| 1372 | ret = i915_gem_evict_something(dev); |
| 1373 | if (ret != 0) |
| 1374 | break; |
| 1375 | } |
Owain Ainsworth | 15c3533 | 2008-12-06 20:42:20 -0800 | [diff] [blame] | 1376 | if (ret == -ENOMEM) |
| 1377 | return 0; |
Keith Packard | ac94a96 | 2008-11-20 23:30:27 -0800 | [diff] [blame] | 1378 | return ret; |
| 1379 | } |
| 1380 | |
| 1381 | static int |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1382 | i915_gem_object_get_page_list(struct drm_gem_object *obj) |
| 1383 | { |
| 1384 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 1385 | int page_count, i; |
| 1386 | struct address_space *mapping; |
| 1387 | struct inode *inode; |
| 1388 | struct page *page; |
| 1389 | int ret; |
| 1390 | |
| 1391 | if (obj_priv->page_list) |
| 1392 | return 0; |
| 1393 | |
| 1394 | /* Get the list of pages out of our struct file. They'll be pinned |
| 1395 | * at this point until we release them. |
| 1396 | */ |
| 1397 | page_count = obj->size / PAGE_SIZE; |
| 1398 | BUG_ON(obj_priv->page_list != NULL); |
| 1399 | obj_priv->page_list = drm_calloc(page_count, sizeof(struct page *), |
| 1400 | DRM_MEM_DRIVER); |
| 1401 | if (obj_priv->page_list == NULL) { |
| 1402 | DRM_ERROR("Faled to allocate page list\n"); |
| 1403 | return -ENOMEM; |
| 1404 | } |
| 1405 | |
| 1406 | inode = obj->filp->f_path.dentry->d_inode; |
| 1407 | mapping = inode->i_mapping; |
| 1408 | for (i = 0; i < page_count; i++) { |
| 1409 | page = read_mapping_page(mapping, i, NULL); |
| 1410 | if (IS_ERR(page)) { |
| 1411 | ret = PTR_ERR(page); |
| 1412 | DRM_ERROR("read_mapping_page failed: %d\n", ret); |
| 1413 | i915_gem_object_free_page_list(obj); |
| 1414 | return ret; |
| 1415 | } |
| 1416 | obj_priv->page_list[i] = page; |
| 1417 | } |
| 1418 | return 0; |
| 1419 | } |
| 1420 | |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1421 | static void i965_write_fence_reg(struct drm_i915_fence_reg *reg) |
| 1422 | { |
| 1423 | struct drm_gem_object *obj = reg->obj; |
| 1424 | struct drm_device *dev = obj->dev; |
| 1425 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 1426 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 1427 | int regnum = obj_priv->fence_reg; |
| 1428 | uint64_t val; |
| 1429 | |
| 1430 | val = (uint64_t)((obj_priv->gtt_offset + obj->size - 4096) & |
| 1431 | 0xfffff000) << 32; |
| 1432 | val |= obj_priv->gtt_offset & 0xfffff000; |
| 1433 | val |= ((obj_priv->stride / 128) - 1) << I965_FENCE_PITCH_SHIFT; |
| 1434 | if (obj_priv->tiling_mode == I915_TILING_Y) |
| 1435 | val |= 1 << I965_FENCE_TILING_Y_SHIFT; |
| 1436 | val |= I965_FENCE_REG_VALID; |
| 1437 | |
| 1438 | I915_WRITE64(FENCE_REG_965_0 + (regnum * 8), val); |
| 1439 | } |
| 1440 | |
| 1441 | static void i915_write_fence_reg(struct drm_i915_fence_reg *reg) |
| 1442 | { |
| 1443 | struct drm_gem_object *obj = reg->obj; |
| 1444 | struct drm_device *dev = obj->dev; |
| 1445 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 1446 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 1447 | int regnum = obj_priv->fence_reg; |
| 1448 | uint32_t val; |
| 1449 | uint32_t pitch_val; |
| 1450 | |
| 1451 | if ((obj_priv->gtt_offset & ~I915_FENCE_START_MASK) || |
| 1452 | (obj_priv->gtt_offset & (obj->size - 1))) { |
Harvey Harrison | 9b4778f | 2009-01-07 14:42:41 -0800 | [diff] [blame] | 1453 | WARN(1, "%s: object not 1M or size aligned\n", __func__); |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1454 | return; |
| 1455 | } |
| 1456 | |
| 1457 | if (obj_priv->tiling_mode == I915_TILING_Y && (IS_I945G(dev) || |
| 1458 | IS_I945GM(dev) || |
| 1459 | IS_G33(dev))) |
| 1460 | pitch_val = (obj_priv->stride / 128) - 1; |
| 1461 | else |
| 1462 | pitch_val = (obj_priv->stride / 512) - 1; |
| 1463 | |
| 1464 | val = obj_priv->gtt_offset; |
| 1465 | if (obj_priv->tiling_mode == I915_TILING_Y) |
| 1466 | val |= 1 << I830_FENCE_TILING_Y_SHIFT; |
| 1467 | val |= I915_FENCE_SIZE_BITS(obj->size); |
| 1468 | val |= pitch_val << I830_FENCE_PITCH_SHIFT; |
| 1469 | val |= I830_FENCE_REG_VALID; |
| 1470 | |
| 1471 | I915_WRITE(FENCE_REG_830_0 + (regnum * 4), val); |
| 1472 | } |
| 1473 | |
| 1474 | static void i830_write_fence_reg(struct drm_i915_fence_reg *reg) |
| 1475 | { |
| 1476 | struct drm_gem_object *obj = reg->obj; |
| 1477 | struct drm_device *dev = obj->dev; |
| 1478 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 1479 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 1480 | int regnum = obj_priv->fence_reg; |
| 1481 | uint32_t val; |
| 1482 | uint32_t pitch_val; |
| 1483 | |
| 1484 | if ((obj_priv->gtt_offset & ~I915_FENCE_START_MASK) || |
| 1485 | (obj_priv->gtt_offset & (obj->size - 1))) { |
Harvey Harrison | 9b4778f | 2009-01-07 14:42:41 -0800 | [diff] [blame] | 1486 | WARN(1, "%s: object not 1M or size aligned\n", __func__); |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1487 | return; |
| 1488 | } |
| 1489 | |
| 1490 | pitch_val = (obj_priv->stride / 128) - 1; |
| 1491 | |
| 1492 | val = obj_priv->gtt_offset; |
| 1493 | if (obj_priv->tiling_mode == I915_TILING_Y) |
| 1494 | val |= 1 << I830_FENCE_TILING_Y_SHIFT; |
| 1495 | val |= I830_FENCE_SIZE_BITS(obj->size); |
| 1496 | val |= pitch_val << I830_FENCE_PITCH_SHIFT; |
| 1497 | val |= I830_FENCE_REG_VALID; |
| 1498 | |
| 1499 | I915_WRITE(FENCE_REG_830_0 + (regnum * 4), val); |
| 1500 | |
| 1501 | } |
| 1502 | |
| 1503 | /** |
| 1504 | * i915_gem_object_get_fence_reg - set up a fence reg for an object |
| 1505 | * @obj: object to map through a fence reg |
| 1506 | * |
| 1507 | * When mapping objects through the GTT, userspace wants to be able to write |
| 1508 | * to them without having to worry about swizzling if the object is tiled. |
| 1509 | * |
| 1510 | * This function walks the fence regs looking for a free one for @obj, |
| 1511 | * stealing one if it can't find any. |
| 1512 | * |
| 1513 | * It then sets up the reg based on the object's properties: address, pitch |
| 1514 | * and tiling format. |
| 1515 | */ |
| 1516 | static void |
| 1517 | i915_gem_object_get_fence_reg(struct drm_gem_object *obj) |
| 1518 | { |
| 1519 | struct drm_device *dev = obj->dev; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 1520 | struct drm_i915_private *dev_priv = dev->dev_private; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1521 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 1522 | struct drm_i915_fence_reg *reg = NULL; |
| 1523 | int i, ret; |
| 1524 | |
| 1525 | switch (obj_priv->tiling_mode) { |
| 1526 | case I915_TILING_NONE: |
| 1527 | WARN(1, "allocating a fence for non-tiled object?\n"); |
| 1528 | break; |
| 1529 | case I915_TILING_X: |
| 1530 | WARN(obj_priv->stride & (512 - 1), |
| 1531 | "object is X tiled but has non-512B pitch\n"); |
| 1532 | break; |
| 1533 | case I915_TILING_Y: |
| 1534 | WARN(obj_priv->stride & (128 - 1), |
| 1535 | "object is Y tiled but has non-128B pitch\n"); |
| 1536 | break; |
| 1537 | } |
| 1538 | |
| 1539 | /* First try to find a free reg */ |
| 1540 | for (i = dev_priv->fence_reg_start; i < dev_priv->num_fence_regs; i++) { |
| 1541 | reg = &dev_priv->fence_regs[i]; |
| 1542 | if (!reg->obj) |
| 1543 | break; |
| 1544 | } |
| 1545 | |
| 1546 | /* None available, try to steal one or wait for a user to finish */ |
| 1547 | if (i == dev_priv->num_fence_regs) { |
| 1548 | struct drm_i915_gem_object *old_obj_priv = NULL; |
| 1549 | loff_t offset; |
| 1550 | |
| 1551 | try_again: |
| 1552 | /* Could try to use LRU here instead... */ |
| 1553 | for (i = dev_priv->fence_reg_start; |
| 1554 | i < dev_priv->num_fence_regs; i++) { |
| 1555 | reg = &dev_priv->fence_regs[i]; |
| 1556 | old_obj_priv = reg->obj->driver_private; |
| 1557 | if (!old_obj_priv->pin_count) |
| 1558 | break; |
| 1559 | } |
| 1560 | |
| 1561 | /* |
| 1562 | * Now things get ugly... we have to wait for one of the |
| 1563 | * objects to finish before trying again. |
| 1564 | */ |
| 1565 | if (i == dev_priv->num_fence_regs) { |
| 1566 | ret = i915_gem_object_wait_rendering(reg->obj); |
| 1567 | if (ret) { |
| 1568 | WARN(ret, "wait_rendering failed: %d\n", ret); |
| 1569 | return; |
| 1570 | } |
| 1571 | goto try_again; |
| 1572 | } |
| 1573 | |
| 1574 | /* |
| 1575 | * Zap this virtual mapping so we can set up a fence again |
| 1576 | * for this object next time we need it. |
| 1577 | */ |
| 1578 | offset = ((loff_t) reg->obj->map_list.hash.key) << PAGE_SHIFT; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 1579 | if (dev->dev_mapping) |
| 1580 | unmap_mapping_range(dev->dev_mapping, offset, |
| 1581 | reg->obj->size, 1); |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1582 | old_obj_priv->fence_reg = I915_FENCE_REG_NONE; |
| 1583 | } |
| 1584 | |
| 1585 | obj_priv->fence_reg = i; |
| 1586 | reg->obj = obj; |
| 1587 | |
| 1588 | if (IS_I965G(dev)) |
| 1589 | i965_write_fence_reg(reg); |
| 1590 | else if (IS_I9XX(dev)) |
| 1591 | i915_write_fence_reg(reg); |
| 1592 | else |
| 1593 | i830_write_fence_reg(reg); |
| 1594 | } |
| 1595 | |
| 1596 | /** |
| 1597 | * i915_gem_clear_fence_reg - clear out fence register info |
| 1598 | * @obj: object to clear |
| 1599 | * |
| 1600 | * Zeroes out the fence register itself and clears out the associated |
| 1601 | * data structures in dev_priv and obj_priv. |
| 1602 | */ |
| 1603 | static void |
| 1604 | i915_gem_clear_fence_reg(struct drm_gem_object *obj) |
| 1605 | { |
| 1606 | struct drm_device *dev = obj->dev; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 1607 | drm_i915_private_t *dev_priv = dev->dev_private; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1608 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 1609 | |
| 1610 | if (IS_I965G(dev)) |
| 1611 | I915_WRITE64(FENCE_REG_965_0 + (obj_priv->fence_reg * 8), 0); |
| 1612 | else |
| 1613 | I915_WRITE(FENCE_REG_830_0 + (obj_priv->fence_reg * 4), 0); |
| 1614 | |
| 1615 | dev_priv->fence_regs[obj_priv->fence_reg].obj = NULL; |
| 1616 | obj_priv->fence_reg = I915_FENCE_REG_NONE; |
| 1617 | } |
| 1618 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1619 | /** |
| 1620 | * Finds free space in the GTT aperture and binds the object there. |
| 1621 | */ |
| 1622 | static int |
| 1623 | i915_gem_object_bind_to_gtt(struct drm_gem_object *obj, unsigned alignment) |
| 1624 | { |
| 1625 | struct drm_device *dev = obj->dev; |
| 1626 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 1627 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 1628 | struct drm_mm_node *free_space; |
| 1629 | int page_count, ret; |
| 1630 | |
Eric Anholt | 9bb2d6f | 2008-12-23 18:42:32 -0800 | [diff] [blame] | 1631 | if (dev_priv->mm.suspended) |
| 1632 | return -EBUSY; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1633 | if (alignment == 0) |
| 1634 | alignment = PAGE_SIZE; |
| 1635 | if (alignment & (PAGE_SIZE - 1)) { |
| 1636 | DRM_ERROR("Invalid object alignment requested %u\n", alignment); |
| 1637 | return -EINVAL; |
| 1638 | } |
| 1639 | |
| 1640 | search_free: |
| 1641 | free_space = drm_mm_search_free(&dev_priv->mm.gtt_space, |
| 1642 | obj->size, alignment, 0); |
| 1643 | if (free_space != NULL) { |
| 1644 | obj_priv->gtt_space = drm_mm_get_block(free_space, obj->size, |
| 1645 | alignment); |
| 1646 | if (obj_priv->gtt_space != NULL) { |
| 1647 | obj_priv->gtt_space->private = obj; |
| 1648 | obj_priv->gtt_offset = obj_priv->gtt_space->start; |
| 1649 | } |
| 1650 | } |
| 1651 | if (obj_priv->gtt_space == NULL) { |
| 1652 | /* If the gtt is empty and we're still having trouble |
| 1653 | * fitting our object in, we're out of memory. |
| 1654 | */ |
| 1655 | #if WATCH_LRU |
| 1656 | DRM_INFO("%s: GTT full, evicting something\n", __func__); |
| 1657 | #endif |
| 1658 | if (list_empty(&dev_priv->mm.inactive_list) && |
| 1659 | list_empty(&dev_priv->mm.flushing_list) && |
| 1660 | list_empty(&dev_priv->mm.active_list)) { |
| 1661 | DRM_ERROR("GTT full, but LRU list empty\n"); |
| 1662 | return -ENOMEM; |
| 1663 | } |
| 1664 | |
| 1665 | ret = i915_gem_evict_something(dev); |
| 1666 | if (ret != 0) { |
Keith Packard | ac94a96 | 2008-11-20 23:30:27 -0800 | [diff] [blame] | 1667 | if (ret != -ERESTARTSYS) |
| 1668 | DRM_ERROR("Failed to evict a buffer %d\n", ret); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1669 | return ret; |
| 1670 | } |
| 1671 | goto search_free; |
| 1672 | } |
| 1673 | |
| 1674 | #if WATCH_BUF |
| 1675 | DRM_INFO("Binding object of size %d at 0x%08x\n", |
| 1676 | obj->size, obj_priv->gtt_offset); |
| 1677 | #endif |
| 1678 | ret = i915_gem_object_get_page_list(obj); |
| 1679 | if (ret) { |
| 1680 | drm_mm_put_block(obj_priv->gtt_space); |
| 1681 | obj_priv->gtt_space = NULL; |
| 1682 | return ret; |
| 1683 | } |
| 1684 | |
| 1685 | page_count = obj->size / PAGE_SIZE; |
| 1686 | /* Create an AGP memory structure pointing at our pages, and bind it |
| 1687 | * into the GTT. |
| 1688 | */ |
| 1689 | obj_priv->agp_mem = drm_agp_bind_pages(dev, |
| 1690 | obj_priv->page_list, |
| 1691 | page_count, |
Keith Packard | ba1eb1d | 2008-10-14 19:55:10 -0700 | [diff] [blame] | 1692 | obj_priv->gtt_offset, |
| 1693 | obj_priv->agp_type); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1694 | if (obj_priv->agp_mem == NULL) { |
| 1695 | i915_gem_object_free_page_list(obj); |
| 1696 | drm_mm_put_block(obj_priv->gtt_space); |
| 1697 | obj_priv->gtt_space = NULL; |
| 1698 | return -ENOMEM; |
| 1699 | } |
| 1700 | atomic_inc(&dev->gtt_count); |
| 1701 | atomic_add(obj->size, &dev->gtt_memory); |
| 1702 | |
| 1703 | /* Assert that the object is not currently in any GPU domain. As it |
| 1704 | * wasn't in the GTT, there shouldn't be any way it could have been in |
| 1705 | * a GPU cache |
| 1706 | */ |
| 1707 | BUG_ON(obj->read_domains & ~(I915_GEM_DOMAIN_CPU|I915_GEM_DOMAIN_GTT)); |
| 1708 | BUG_ON(obj->write_domain & ~(I915_GEM_DOMAIN_CPU|I915_GEM_DOMAIN_GTT)); |
| 1709 | |
| 1710 | return 0; |
| 1711 | } |
| 1712 | |
| 1713 | void |
| 1714 | i915_gem_clflush_object(struct drm_gem_object *obj) |
| 1715 | { |
| 1716 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 1717 | |
| 1718 | /* If we don't have a page list set up, then we're not pinned |
| 1719 | * to GPU, and we can ignore the cache flush because it'll happen |
| 1720 | * again at bind time. |
| 1721 | */ |
| 1722 | if (obj_priv->page_list == NULL) |
| 1723 | return; |
| 1724 | |
| 1725 | drm_clflush_pages(obj_priv->page_list, obj->size / PAGE_SIZE); |
| 1726 | } |
| 1727 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 1728 | /** Flushes any GPU write domain for the object if it's dirty. */ |
| 1729 | static void |
| 1730 | i915_gem_object_flush_gpu_write_domain(struct drm_gem_object *obj) |
| 1731 | { |
| 1732 | struct drm_device *dev = obj->dev; |
| 1733 | uint32_t seqno; |
| 1734 | |
| 1735 | if ((obj->write_domain & I915_GEM_GPU_DOMAINS) == 0) |
| 1736 | return; |
| 1737 | |
| 1738 | /* Queue the GPU write cache flushing we need. */ |
| 1739 | i915_gem_flush(dev, 0, obj->write_domain); |
| 1740 | seqno = i915_add_request(dev, obj->write_domain); |
| 1741 | obj->write_domain = 0; |
| 1742 | i915_gem_object_move_to_active(obj, seqno); |
| 1743 | } |
| 1744 | |
| 1745 | /** Flushes the GTT write domain for the object if it's dirty. */ |
| 1746 | static void |
| 1747 | i915_gem_object_flush_gtt_write_domain(struct drm_gem_object *obj) |
| 1748 | { |
| 1749 | if (obj->write_domain != I915_GEM_DOMAIN_GTT) |
| 1750 | return; |
| 1751 | |
| 1752 | /* No actual flushing is required for the GTT write domain. Writes |
| 1753 | * to it immediately go to main memory as far as we know, so there's |
| 1754 | * no chipset flush. It also doesn't land in render cache. |
| 1755 | */ |
| 1756 | obj->write_domain = 0; |
| 1757 | } |
| 1758 | |
| 1759 | /** Flushes the CPU write domain for the object if it's dirty. */ |
| 1760 | static void |
| 1761 | i915_gem_object_flush_cpu_write_domain(struct drm_gem_object *obj) |
| 1762 | { |
| 1763 | struct drm_device *dev = obj->dev; |
| 1764 | |
| 1765 | if (obj->write_domain != I915_GEM_DOMAIN_CPU) |
| 1766 | return; |
| 1767 | |
| 1768 | i915_gem_clflush_object(obj); |
| 1769 | drm_agp_chipset_flush(dev); |
| 1770 | obj->write_domain = 0; |
| 1771 | } |
| 1772 | |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1773 | /** |
| 1774 | * Moves a single object to the GTT read, and possibly write domain. |
| 1775 | * |
| 1776 | * This function returns when the move is complete, including waiting on |
| 1777 | * flushes to occur. |
| 1778 | */ |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 1779 | int |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1780 | i915_gem_object_set_to_gtt_domain(struct drm_gem_object *obj, int write) |
| 1781 | { |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1782 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 1783 | int ret; |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1784 | |
Eric Anholt | 0235439 | 2008-11-26 13:58:13 -0800 | [diff] [blame] | 1785 | /* Not valid to be called on unbound objects. */ |
| 1786 | if (obj_priv->gtt_space == NULL) |
| 1787 | return -EINVAL; |
| 1788 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 1789 | i915_gem_object_flush_gpu_write_domain(obj); |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1790 | /* Wait on any GPU rendering and flushing to occur. */ |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 1791 | ret = i915_gem_object_wait_rendering(obj); |
| 1792 | if (ret != 0) |
| 1793 | return ret; |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1794 | |
| 1795 | /* If we're writing through the GTT domain, then CPU and GPU caches |
| 1796 | * will need to be invalidated at next use. |
| 1797 | */ |
| 1798 | if (write) |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 1799 | obj->read_domains &= I915_GEM_DOMAIN_GTT; |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1800 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 1801 | i915_gem_object_flush_cpu_write_domain(obj); |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1802 | |
| 1803 | /* It should now be out of any other write domains, and we can update |
| 1804 | * the domain values for our changes. |
| 1805 | */ |
| 1806 | BUG_ON((obj->write_domain & ~I915_GEM_DOMAIN_GTT) != 0); |
| 1807 | obj->read_domains |= I915_GEM_DOMAIN_GTT; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 1808 | if (write) { |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1809 | obj->write_domain = I915_GEM_DOMAIN_GTT; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 1810 | obj_priv->dirty = 1; |
| 1811 | } |
| 1812 | |
| 1813 | return 0; |
| 1814 | } |
| 1815 | |
| 1816 | /** |
| 1817 | * Moves a single object to the CPU read, and possibly write domain. |
| 1818 | * |
| 1819 | * This function returns when the move is complete, including waiting on |
| 1820 | * flushes to occur. |
| 1821 | */ |
| 1822 | static int |
| 1823 | i915_gem_object_set_to_cpu_domain(struct drm_gem_object *obj, int write) |
| 1824 | { |
| 1825 | struct drm_device *dev = obj->dev; |
| 1826 | int ret; |
| 1827 | |
| 1828 | i915_gem_object_flush_gpu_write_domain(obj); |
| 1829 | /* Wait on any GPU rendering and flushing to occur. */ |
| 1830 | ret = i915_gem_object_wait_rendering(obj); |
| 1831 | if (ret != 0) |
| 1832 | return ret; |
| 1833 | |
| 1834 | i915_gem_object_flush_gtt_write_domain(obj); |
| 1835 | |
| 1836 | /* If we have a partially-valid cache of the object in the CPU, |
| 1837 | * finish invalidating it and free the per-page flags. |
| 1838 | */ |
| 1839 | i915_gem_object_set_to_full_cpu_read_domain(obj); |
| 1840 | |
| 1841 | /* Flush the CPU cache if it's still invalid. */ |
| 1842 | if ((obj->read_domains & I915_GEM_DOMAIN_CPU) == 0) { |
| 1843 | i915_gem_clflush_object(obj); |
| 1844 | drm_agp_chipset_flush(dev); |
| 1845 | |
| 1846 | obj->read_domains |= I915_GEM_DOMAIN_CPU; |
| 1847 | } |
| 1848 | |
| 1849 | /* It should now be out of any other write domains, and we can update |
| 1850 | * the domain values for our changes. |
| 1851 | */ |
| 1852 | BUG_ON((obj->write_domain & ~I915_GEM_DOMAIN_CPU) != 0); |
| 1853 | |
| 1854 | /* If we're writing through the CPU, then the GPU read domains will |
| 1855 | * need to be invalidated at next use. |
| 1856 | */ |
| 1857 | if (write) { |
| 1858 | obj->read_domains &= I915_GEM_DOMAIN_CPU; |
| 1859 | obj->write_domain = I915_GEM_DOMAIN_CPU; |
| 1860 | } |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1861 | |
| 1862 | return 0; |
| 1863 | } |
| 1864 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1865 | /* |
| 1866 | * Set the next domain for the specified object. This |
| 1867 | * may not actually perform the necessary flushing/invaliding though, |
| 1868 | * as that may want to be batched with other set_domain operations |
| 1869 | * |
| 1870 | * This is (we hope) the only really tricky part of gem. The goal |
| 1871 | * is fairly simple -- track which caches hold bits of the object |
| 1872 | * and make sure they remain coherent. A few concrete examples may |
| 1873 | * help to explain how it works. For shorthand, we use the notation |
| 1874 | * (read_domains, write_domain), e.g. (CPU, CPU) to indicate the |
| 1875 | * a pair of read and write domain masks. |
| 1876 | * |
| 1877 | * Case 1: the batch buffer |
| 1878 | * |
| 1879 | * 1. Allocated |
| 1880 | * 2. Written by CPU |
| 1881 | * 3. Mapped to GTT |
| 1882 | * 4. Read by GPU |
| 1883 | * 5. Unmapped from GTT |
| 1884 | * 6. Freed |
| 1885 | * |
| 1886 | * Let's take these a step at a time |
| 1887 | * |
| 1888 | * 1. Allocated |
| 1889 | * Pages allocated from the kernel may still have |
| 1890 | * cache contents, so we set them to (CPU, CPU) always. |
| 1891 | * 2. Written by CPU (using pwrite) |
| 1892 | * The pwrite function calls set_domain (CPU, CPU) and |
| 1893 | * this function does nothing (as nothing changes) |
| 1894 | * 3. Mapped by GTT |
| 1895 | * This function asserts that the object is not |
| 1896 | * currently in any GPU-based read or write domains |
| 1897 | * 4. Read by GPU |
| 1898 | * i915_gem_execbuffer calls set_domain (COMMAND, 0). |
| 1899 | * As write_domain is zero, this function adds in the |
| 1900 | * current read domains (CPU+COMMAND, 0). |
| 1901 | * flush_domains is set to CPU. |
| 1902 | * invalidate_domains is set to COMMAND |
| 1903 | * clflush is run to get data out of the CPU caches |
| 1904 | * then i915_dev_set_domain calls i915_gem_flush to |
| 1905 | * emit an MI_FLUSH and drm_agp_chipset_flush |
| 1906 | * 5. Unmapped from GTT |
| 1907 | * i915_gem_object_unbind calls set_domain (CPU, CPU) |
| 1908 | * flush_domains and invalidate_domains end up both zero |
| 1909 | * so no flushing/invalidating happens |
| 1910 | * 6. Freed |
| 1911 | * yay, done |
| 1912 | * |
| 1913 | * Case 2: The shared render buffer |
| 1914 | * |
| 1915 | * 1. Allocated |
| 1916 | * 2. Mapped to GTT |
| 1917 | * 3. Read/written by GPU |
| 1918 | * 4. set_domain to (CPU,CPU) |
| 1919 | * 5. Read/written by CPU |
| 1920 | * 6. Read/written by GPU |
| 1921 | * |
| 1922 | * 1. Allocated |
| 1923 | * Same as last example, (CPU, CPU) |
| 1924 | * 2. Mapped to GTT |
| 1925 | * Nothing changes (assertions find that it is not in the GPU) |
| 1926 | * 3. Read/written by GPU |
| 1927 | * execbuffer calls set_domain (RENDER, RENDER) |
| 1928 | * flush_domains gets CPU |
| 1929 | * invalidate_domains gets GPU |
| 1930 | * clflush (obj) |
| 1931 | * MI_FLUSH and drm_agp_chipset_flush |
| 1932 | * 4. set_domain (CPU, CPU) |
| 1933 | * flush_domains gets GPU |
| 1934 | * invalidate_domains gets CPU |
| 1935 | * wait_rendering (obj) to make sure all drawing is complete. |
| 1936 | * This will include an MI_FLUSH to get the data from GPU |
| 1937 | * to memory |
| 1938 | * clflush (obj) to invalidate the CPU cache |
| 1939 | * Another MI_FLUSH in i915_gem_flush (eliminate this somehow?) |
| 1940 | * 5. Read/written by CPU |
| 1941 | * cache lines are loaded and dirtied |
| 1942 | * 6. Read written by GPU |
| 1943 | * Same as last GPU access |
| 1944 | * |
| 1945 | * Case 3: The constant buffer |
| 1946 | * |
| 1947 | * 1. Allocated |
| 1948 | * 2. Written by CPU |
| 1949 | * 3. Read by GPU |
| 1950 | * 4. Updated (written) by CPU again |
| 1951 | * 5. Read by GPU |
| 1952 | * |
| 1953 | * 1. Allocated |
| 1954 | * (CPU, CPU) |
| 1955 | * 2. Written by CPU |
| 1956 | * (CPU, CPU) |
| 1957 | * 3. Read by GPU |
| 1958 | * (CPU+RENDER, 0) |
| 1959 | * flush_domains = CPU |
| 1960 | * invalidate_domains = RENDER |
| 1961 | * clflush (obj) |
| 1962 | * MI_FLUSH |
| 1963 | * drm_agp_chipset_flush |
| 1964 | * 4. Updated (written) by CPU again |
| 1965 | * (CPU, CPU) |
| 1966 | * flush_domains = 0 (no previous write domain) |
| 1967 | * invalidate_domains = 0 (no new read domains) |
| 1968 | * 5. Read by GPU |
| 1969 | * (CPU+RENDER, 0) |
| 1970 | * flush_domains = CPU |
| 1971 | * invalidate_domains = RENDER |
| 1972 | * clflush (obj) |
| 1973 | * MI_FLUSH |
| 1974 | * drm_agp_chipset_flush |
| 1975 | */ |
Keith Packard | c0d9082 | 2008-11-20 23:11:08 -0800 | [diff] [blame] | 1976 | static void |
| 1977 | i915_gem_object_set_to_gpu_domain(struct drm_gem_object *obj, |
| 1978 | uint32_t read_domains, |
| 1979 | uint32_t write_domain) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1980 | { |
| 1981 | struct drm_device *dev = obj->dev; |
| 1982 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 1983 | uint32_t invalidate_domains = 0; |
| 1984 | uint32_t flush_domains = 0; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 1985 | |
| 1986 | BUG_ON(read_domains & I915_GEM_DOMAIN_CPU); |
| 1987 | BUG_ON(write_domain == I915_GEM_DOMAIN_CPU); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1988 | |
| 1989 | #if WATCH_BUF |
| 1990 | DRM_INFO("%s: object %p read %08x -> %08x write %08x -> %08x\n", |
| 1991 | __func__, obj, |
| 1992 | obj->read_domains, read_domains, |
| 1993 | obj->write_domain, write_domain); |
| 1994 | #endif |
| 1995 | /* |
| 1996 | * If the object isn't moving to a new write domain, |
| 1997 | * let the object stay in multiple read domains |
| 1998 | */ |
| 1999 | if (write_domain == 0) |
| 2000 | read_domains |= obj->read_domains; |
| 2001 | else |
| 2002 | obj_priv->dirty = 1; |
| 2003 | |
| 2004 | /* |
| 2005 | * Flush the current write domain if |
| 2006 | * the new read domains don't match. Invalidate |
| 2007 | * any read domains which differ from the old |
| 2008 | * write domain |
| 2009 | */ |
| 2010 | if (obj->write_domain && obj->write_domain != read_domains) { |
| 2011 | flush_domains |= obj->write_domain; |
| 2012 | invalidate_domains |= read_domains & ~obj->write_domain; |
| 2013 | } |
| 2014 | /* |
| 2015 | * Invalidate any read caches which may have |
| 2016 | * stale data. That is, any new read domains. |
| 2017 | */ |
| 2018 | invalidate_domains |= read_domains & ~obj->read_domains; |
| 2019 | if ((flush_domains | invalidate_domains) & I915_GEM_DOMAIN_CPU) { |
| 2020 | #if WATCH_BUF |
| 2021 | DRM_INFO("%s: CPU domain flush %08x invalidate %08x\n", |
| 2022 | __func__, flush_domains, invalidate_domains); |
| 2023 | #endif |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2024 | i915_gem_clflush_object(obj); |
| 2025 | } |
| 2026 | |
| 2027 | if ((write_domain | flush_domains) != 0) |
| 2028 | obj->write_domain = write_domain; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2029 | obj->read_domains = read_domains; |
| 2030 | |
| 2031 | dev->invalidate_domains |= invalidate_domains; |
| 2032 | dev->flush_domains |= flush_domains; |
| 2033 | #if WATCH_BUF |
| 2034 | DRM_INFO("%s: read %08x write %08x invalidate %08x flush %08x\n", |
| 2035 | __func__, |
| 2036 | obj->read_domains, obj->write_domain, |
| 2037 | dev->invalidate_domains, dev->flush_domains); |
| 2038 | #endif |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2039 | } |
| 2040 | |
| 2041 | /** |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2042 | * Moves the object from a partially CPU read to a full one. |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2043 | * |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2044 | * Note that this only resolves i915_gem_object_set_cpu_read_domain_range(), |
| 2045 | * and doesn't handle transitioning from !(read_domains & I915_GEM_DOMAIN_CPU). |
| 2046 | */ |
| 2047 | static void |
| 2048 | i915_gem_object_set_to_full_cpu_read_domain(struct drm_gem_object *obj) |
| 2049 | { |
| 2050 | struct drm_device *dev = obj->dev; |
| 2051 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 2052 | |
| 2053 | if (!obj_priv->page_cpu_valid) |
| 2054 | return; |
| 2055 | |
| 2056 | /* If we're partially in the CPU read domain, finish moving it in. |
| 2057 | */ |
| 2058 | if (obj->read_domains & I915_GEM_DOMAIN_CPU) { |
| 2059 | int i; |
| 2060 | |
| 2061 | for (i = 0; i <= (obj->size - 1) / PAGE_SIZE; i++) { |
| 2062 | if (obj_priv->page_cpu_valid[i]) |
| 2063 | continue; |
| 2064 | drm_clflush_pages(obj_priv->page_list + i, 1); |
| 2065 | } |
| 2066 | drm_agp_chipset_flush(dev); |
| 2067 | } |
| 2068 | |
| 2069 | /* Free the page_cpu_valid mappings which are now stale, whether |
| 2070 | * or not we've got I915_GEM_DOMAIN_CPU. |
| 2071 | */ |
| 2072 | drm_free(obj_priv->page_cpu_valid, obj->size / PAGE_SIZE, |
| 2073 | DRM_MEM_DRIVER); |
| 2074 | obj_priv->page_cpu_valid = NULL; |
| 2075 | } |
| 2076 | |
| 2077 | /** |
| 2078 | * Set the CPU read domain on a range of the object. |
| 2079 | * |
| 2080 | * The object ends up with I915_GEM_DOMAIN_CPU in its read flags although it's |
| 2081 | * not entirely valid. The page_cpu_valid member of the object flags which |
| 2082 | * pages have been flushed, and will be respected by |
| 2083 | * i915_gem_object_set_to_cpu_domain() if it's called on to get a valid mapping |
| 2084 | * of the whole object. |
| 2085 | * |
| 2086 | * This function returns when the move is complete, including waiting on |
| 2087 | * flushes to occur. |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2088 | */ |
| 2089 | static int |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2090 | i915_gem_object_set_cpu_read_domain_range(struct drm_gem_object *obj, |
| 2091 | uint64_t offset, uint64_t size) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2092 | { |
| 2093 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2094 | int i, ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2095 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2096 | if (offset == 0 && size == obj->size) |
| 2097 | return i915_gem_object_set_to_cpu_domain(obj, 0); |
| 2098 | |
| 2099 | i915_gem_object_flush_gpu_write_domain(obj); |
| 2100 | /* Wait on any GPU rendering and flushing to occur. */ |
| 2101 | ret = i915_gem_object_wait_rendering(obj); |
| 2102 | if (ret != 0) |
| 2103 | return ret; |
| 2104 | i915_gem_object_flush_gtt_write_domain(obj); |
| 2105 | |
| 2106 | /* If we're already fully in the CPU read domain, we're done. */ |
| 2107 | if (obj_priv->page_cpu_valid == NULL && |
| 2108 | (obj->read_domains & I915_GEM_DOMAIN_CPU) != 0) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2109 | return 0; |
| 2110 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2111 | /* Otherwise, create/clear the per-page CPU read domain flag if we're |
| 2112 | * newly adding I915_GEM_DOMAIN_CPU |
| 2113 | */ |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2114 | if (obj_priv->page_cpu_valid == NULL) { |
| 2115 | obj_priv->page_cpu_valid = drm_calloc(1, obj->size / PAGE_SIZE, |
| 2116 | DRM_MEM_DRIVER); |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2117 | if (obj_priv->page_cpu_valid == NULL) |
| 2118 | return -ENOMEM; |
| 2119 | } else if ((obj->read_domains & I915_GEM_DOMAIN_CPU) == 0) |
| 2120 | memset(obj_priv->page_cpu_valid, 0, obj->size / PAGE_SIZE); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2121 | |
| 2122 | /* Flush the cache on any pages that are still invalid from the CPU's |
| 2123 | * perspective. |
| 2124 | */ |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2125 | for (i = offset / PAGE_SIZE; i <= (offset + size - 1) / PAGE_SIZE; |
| 2126 | i++) { |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2127 | if (obj_priv->page_cpu_valid[i]) |
| 2128 | continue; |
| 2129 | |
| 2130 | drm_clflush_pages(obj_priv->page_list + i, 1); |
| 2131 | |
| 2132 | obj_priv->page_cpu_valid[i] = 1; |
| 2133 | } |
| 2134 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2135 | /* It should now be out of any other write domains, and we can update |
| 2136 | * the domain values for our changes. |
| 2137 | */ |
| 2138 | BUG_ON((obj->write_domain & ~I915_GEM_DOMAIN_CPU) != 0); |
| 2139 | |
| 2140 | obj->read_domains |= I915_GEM_DOMAIN_CPU; |
| 2141 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2142 | return 0; |
| 2143 | } |
| 2144 | |
| 2145 | /** |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2146 | * Pin an object to the GTT and evaluate the relocations landing in it. |
| 2147 | */ |
| 2148 | static int |
| 2149 | i915_gem_object_pin_and_relocate(struct drm_gem_object *obj, |
| 2150 | struct drm_file *file_priv, |
| 2151 | struct drm_i915_gem_exec_object *entry) |
| 2152 | { |
| 2153 | struct drm_device *dev = obj->dev; |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 2154 | drm_i915_private_t *dev_priv = dev->dev_private; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2155 | struct drm_i915_gem_relocation_entry reloc; |
| 2156 | struct drm_i915_gem_relocation_entry __user *relocs; |
| 2157 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 2158 | int i, ret; |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 2159 | void __iomem *reloc_page; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2160 | |
| 2161 | /* Choose the GTT offset for our buffer and put it there. */ |
| 2162 | ret = i915_gem_object_pin(obj, (uint32_t) entry->alignment); |
| 2163 | if (ret) |
| 2164 | return ret; |
| 2165 | |
| 2166 | entry->offset = obj_priv->gtt_offset; |
| 2167 | |
| 2168 | relocs = (struct drm_i915_gem_relocation_entry __user *) |
| 2169 | (uintptr_t) entry->relocs_ptr; |
| 2170 | /* Apply the relocations, using the GTT aperture to avoid cache |
| 2171 | * flushing requirements. |
| 2172 | */ |
| 2173 | for (i = 0; i < entry->relocation_count; i++) { |
| 2174 | struct drm_gem_object *target_obj; |
| 2175 | struct drm_i915_gem_object *target_obj_priv; |
Eric Anholt | 3043c60 | 2008-10-02 12:24:47 -0700 | [diff] [blame] | 2176 | uint32_t reloc_val, reloc_offset; |
| 2177 | uint32_t __iomem *reloc_entry; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2178 | |
| 2179 | ret = copy_from_user(&reloc, relocs + i, sizeof(reloc)); |
| 2180 | if (ret != 0) { |
| 2181 | i915_gem_object_unpin(obj); |
| 2182 | return ret; |
| 2183 | } |
| 2184 | |
| 2185 | target_obj = drm_gem_object_lookup(obj->dev, file_priv, |
| 2186 | reloc.target_handle); |
| 2187 | if (target_obj == NULL) { |
| 2188 | i915_gem_object_unpin(obj); |
| 2189 | return -EBADF; |
| 2190 | } |
| 2191 | target_obj_priv = target_obj->driver_private; |
| 2192 | |
| 2193 | /* The target buffer should have appeared before us in the |
| 2194 | * exec_object list, so it should have a GTT space bound by now. |
| 2195 | */ |
| 2196 | if (target_obj_priv->gtt_space == NULL) { |
| 2197 | DRM_ERROR("No GTT space found for object %d\n", |
| 2198 | reloc.target_handle); |
| 2199 | drm_gem_object_unreference(target_obj); |
| 2200 | i915_gem_object_unpin(obj); |
| 2201 | return -EINVAL; |
| 2202 | } |
| 2203 | |
| 2204 | if (reloc.offset > obj->size - 4) { |
| 2205 | DRM_ERROR("Relocation beyond object bounds: " |
| 2206 | "obj %p target %d offset %d size %d.\n", |
| 2207 | obj, reloc.target_handle, |
| 2208 | (int) reloc.offset, (int) obj->size); |
| 2209 | drm_gem_object_unreference(target_obj); |
| 2210 | i915_gem_object_unpin(obj); |
| 2211 | return -EINVAL; |
| 2212 | } |
| 2213 | if (reloc.offset & 3) { |
| 2214 | DRM_ERROR("Relocation not 4-byte aligned: " |
| 2215 | "obj %p target %d offset %d.\n", |
| 2216 | obj, reloc.target_handle, |
| 2217 | (int) reloc.offset); |
| 2218 | drm_gem_object_unreference(target_obj); |
| 2219 | i915_gem_object_unpin(obj); |
| 2220 | return -EINVAL; |
| 2221 | } |
| 2222 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2223 | if (reloc.write_domain & I915_GEM_DOMAIN_CPU || |
| 2224 | reloc.read_domains & I915_GEM_DOMAIN_CPU) { |
| 2225 | DRM_ERROR("reloc with read/write CPU domains: " |
| 2226 | "obj %p target %d offset %d " |
| 2227 | "read %08x write %08x", |
| 2228 | obj, reloc.target_handle, |
| 2229 | (int) reloc.offset, |
| 2230 | reloc.read_domains, |
| 2231 | reloc.write_domain); |
| 2232 | return -EINVAL; |
| 2233 | } |
| 2234 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2235 | if (reloc.write_domain && target_obj->pending_write_domain && |
| 2236 | reloc.write_domain != target_obj->pending_write_domain) { |
| 2237 | DRM_ERROR("Write domain conflict: " |
| 2238 | "obj %p target %d offset %d " |
| 2239 | "new %08x old %08x\n", |
| 2240 | obj, reloc.target_handle, |
| 2241 | (int) reloc.offset, |
| 2242 | reloc.write_domain, |
| 2243 | target_obj->pending_write_domain); |
| 2244 | drm_gem_object_unreference(target_obj); |
| 2245 | i915_gem_object_unpin(obj); |
| 2246 | return -EINVAL; |
| 2247 | } |
| 2248 | |
| 2249 | #if WATCH_RELOC |
| 2250 | DRM_INFO("%s: obj %p offset %08x target %d " |
| 2251 | "read %08x write %08x gtt %08x " |
| 2252 | "presumed %08x delta %08x\n", |
| 2253 | __func__, |
| 2254 | obj, |
| 2255 | (int) reloc.offset, |
| 2256 | (int) reloc.target_handle, |
| 2257 | (int) reloc.read_domains, |
| 2258 | (int) reloc.write_domain, |
| 2259 | (int) target_obj_priv->gtt_offset, |
| 2260 | (int) reloc.presumed_offset, |
| 2261 | reloc.delta); |
| 2262 | #endif |
| 2263 | |
| 2264 | target_obj->pending_read_domains |= reloc.read_domains; |
| 2265 | target_obj->pending_write_domain |= reloc.write_domain; |
| 2266 | |
| 2267 | /* If the relocation already has the right value in it, no |
| 2268 | * more work needs to be done. |
| 2269 | */ |
| 2270 | if (target_obj_priv->gtt_offset == reloc.presumed_offset) { |
| 2271 | drm_gem_object_unreference(target_obj); |
| 2272 | continue; |
| 2273 | } |
| 2274 | |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 2275 | ret = i915_gem_object_set_to_gtt_domain(obj, 1); |
| 2276 | if (ret != 0) { |
| 2277 | drm_gem_object_unreference(target_obj); |
| 2278 | i915_gem_object_unpin(obj); |
| 2279 | return -EINVAL; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2280 | } |
| 2281 | |
| 2282 | /* Map the page containing the relocation we're going to |
| 2283 | * perform. |
| 2284 | */ |
| 2285 | reloc_offset = obj_priv->gtt_offset + reloc.offset; |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 2286 | reloc_page = io_mapping_map_atomic_wc(dev_priv->mm.gtt_mapping, |
| 2287 | (reloc_offset & |
| 2288 | ~(PAGE_SIZE - 1))); |
Eric Anholt | 3043c60 | 2008-10-02 12:24:47 -0700 | [diff] [blame] | 2289 | reloc_entry = (uint32_t __iomem *)(reloc_page + |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 2290 | (reloc_offset & (PAGE_SIZE - 1))); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2291 | reloc_val = target_obj_priv->gtt_offset + reloc.delta; |
| 2292 | |
| 2293 | #if WATCH_BUF |
| 2294 | DRM_INFO("Applied relocation: %p@0x%08x %08x -> %08x\n", |
| 2295 | obj, (unsigned int) reloc.offset, |
| 2296 | readl(reloc_entry), reloc_val); |
| 2297 | #endif |
| 2298 | writel(reloc_val, reloc_entry); |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 2299 | io_mapping_unmap_atomic(reloc_page); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2300 | |
| 2301 | /* Write the updated presumed offset for this entry back out |
| 2302 | * to the user. |
| 2303 | */ |
| 2304 | reloc.presumed_offset = target_obj_priv->gtt_offset; |
| 2305 | ret = copy_to_user(relocs + i, &reloc, sizeof(reloc)); |
| 2306 | if (ret != 0) { |
| 2307 | drm_gem_object_unreference(target_obj); |
| 2308 | i915_gem_object_unpin(obj); |
| 2309 | return ret; |
| 2310 | } |
| 2311 | |
| 2312 | drm_gem_object_unreference(target_obj); |
| 2313 | } |
| 2314 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2315 | #if WATCH_BUF |
| 2316 | if (0) |
| 2317 | i915_gem_dump_object(obj, 128, __func__, ~0); |
| 2318 | #endif |
| 2319 | return 0; |
| 2320 | } |
| 2321 | |
| 2322 | /** Dispatch a batchbuffer to the ring |
| 2323 | */ |
| 2324 | static int |
| 2325 | i915_dispatch_gem_execbuffer(struct drm_device *dev, |
| 2326 | struct drm_i915_gem_execbuffer *exec, |
| 2327 | uint64_t exec_offset) |
| 2328 | { |
| 2329 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 2330 | struct drm_clip_rect __user *boxes = (struct drm_clip_rect __user *) |
| 2331 | (uintptr_t) exec->cliprects_ptr; |
| 2332 | int nbox = exec->num_cliprects; |
| 2333 | int i = 0, count; |
| 2334 | uint32_t exec_start, exec_len; |
| 2335 | RING_LOCALS; |
| 2336 | |
| 2337 | exec_start = (uint32_t) exec_offset + exec->batch_start_offset; |
| 2338 | exec_len = (uint32_t) exec->batch_len; |
| 2339 | |
| 2340 | if ((exec_start | exec_len) & 0x7) { |
| 2341 | DRM_ERROR("alignment\n"); |
| 2342 | return -EINVAL; |
| 2343 | } |
| 2344 | |
| 2345 | if (!exec_start) |
| 2346 | return -EINVAL; |
| 2347 | |
| 2348 | count = nbox ? nbox : 1; |
| 2349 | |
| 2350 | for (i = 0; i < count; i++) { |
| 2351 | if (i < nbox) { |
| 2352 | int ret = i915_emit_box(dev, boxes, i, |
| 2353 | exec->DR1, exec->DR4); |
| 2354 | if (ret) |
| 2355 | return ret; |
| 2356 | } |
| 2357 | |
| 2358 | if (IS_I830(dev) || IS_845G(dev)) { |
| 2359 | BEGIN_LP_RING(4); |
| 2360 | OUT_RING(MI_BATCH_BUFFER); |
| 2361 | OUT_RING(exec_start | MI_BATCH_NON_SECURE); |
| 2362 | OUT_RING(exec_start + exec_len - 4); |
| 2363 | OUT_RING(0); |
| 2364 | ADVANCE_LP_RING(); |
| 2365 | } else { |
| 2366 | BEGIN_LP_RING(2); |
| 2367 | if (IS_I965G(dev)) { |
| 2368 | OUT_RING(MI_BATCH_BUFFER_START | |
| 2369 | (2 << 6) | |
| 2370 | MI_BATCH_NON_SECURE_I965); |
| 2371 | OUT_RING(exec_start); |
| 2372 | } else { |
| 2373 | OUT_RING(MI_BATCH_BUFFER_START | |
| 2374 | (2 << 6)); |
| 2375 | OUT_RING(exec_start | MI_BATCH_NON_SECURE); |
| 2376 | } |
| 2377 | ADVANCE_LP_RING(); |
| 2378 | } |
| 2379 | } |
| 2380 | |
| 2381 | /* XXX breadcrumb */ |
| 2382 | return 0; |
| 2383 | } |
| 2384 | |
| 2385 | /* Throttle our rendering by waiting until the ring has completed our requests |
| 2386 | * emitted over 20 msec ago. |
| 2387 | * |
| 2388 | * This should get us reasonable parallelism between CPU and GPU but also |
| 2389 | * relatively low latency when blocking on a particular request to finish. |
| 2390 | */ |
| 2391 | static int |
| 2392 | i915_gem_ring_throttle(struct drm_device *dev, struct drm_file *file_priv) |
| 2393 | { |
| 2394 | struct drm_i915_file_private *i915_file_priv = file_priv->driver_priv; |
| 2395 | int ret = 0; |
| 2396 | uint32_t seqno; |
| 2397 | |
| 2398 | mutex_lock(&dev->struct_mutex); |
| 2399 | seqno = i915_file_priv->mm.last_gem_throttle_seqno; |
| 2400 | i915_file_priv->mm.last_gem_throttle_seqno = |
| 2401 | i915_file_priv->mm.last_gem_seqno; |
| 2402 | if (seqno) |
| 2403 | ret = i915_wait_request(dev, seqno); |
| 2404 | mutex_unlock(&dev->struct_mutex); |
| 2405 | return ret; |
| 2406 | } |
| 2407 | |
| 2408 | int |
| 2409 | i915_gem_execbuffer(struct drm_device *dev, void *data, |
| 2410 | struct drm_file *file_priv) |
| 2411 | { |
| 2412 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 2413 | struct drm_i915_file_private *i915_file_priv = file_priv->driver_priv; |
| 2414 | struct drm_i915_gem_execbuffer *args = data; |
| 2415 | struct drm_i915_gem_exec_object *exec_list = NULL; |
| 2416 | struct drm_gem_object **object_list = NULL; |
| 2417 | struct drm_gem_object *batch_obj; |
| 2418 | int ret, i, pinned = 0; |
| 2419 | uint64_t exec_offset; |
| 2420 | uint32_t seqno, flush_domains; |
Keith Packard | ac94a96 | 2008-11-20 23:30:27 -0800 | [diff] [blame] | 2421 | int pin_tries; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2422 | |
| 2423 | #if WATCH_EXEC |
| 2424 | DRM_INFO("buffers_ptr %d buffer_count %d len %08x\n", |
| 2425 | (int) args->buffers_ptr, args->buffer_count, args->batch_len); |
| 2426 | #endif |
| 2427 | |
Eric Anholt | 4f481ed | 2008-09-10 14:22:49 -0700 | [diff] [blame] | 2428 | if (args->buffer_count < 1) { |
| 2429 | DRM_ERROR("execbuf with %d buffers\n", args->buffer_count); |
| 2430 | return -EINVAL; |
| 2431 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2432 | /* Copy in the exec list from userland */ |
| 2433 | exec_list = drm_calloc(sizeof(*exec_list), args->buffer_count, |
| 2434 | DRM_MEM_DRIVER); |
| 2435 | object_list = drm_calloc(sizeof(*object_list), args->buffer_count, |
| 2436 | DRM_MEM_DRIVER); |
| 2437 | if (exec_list == NULL || object_list == NULL) { |
| 2438 | DRM_ERROR("Failed to allocate exec or object list " |
| 2439 | "for %d buffers\n", |
| 2440 | args->buffer_count); |
| 2441 | ret = -ENOMEM; |
| 2442 | goto pre_mutex_err; |
| 2443 | } |
| 2444 | ret = copy_from_user(exec_list, |
| 2445 | (struct drm_i915_relocation_entry __user *) |
| 2446 | (uintptr_t) args->buffers_ptr, |
| 2447 | sizeof(*exec_list) * args->buffer_count); |
| 2448 | if (ret != 0) { |
| 2449 | DRM_ERROR("copy %d exec entries failed %d\n", |
| 2450 | args->buffer_count, ret); |
| 2451 | goto pre_mutex_err; |
| 2452 | } |
| 2453 | |
| 2454 | mutex_lock(&dev->struct_mutex); |
| 2455 | |
| 2456 | i915_verify_inactive(dev, __FILE__, __LINE__); |
| 2457 | |
| 2458 | if (dev_priv->mm.wedged) { |
| 2459 | DRM_ERROR("Execbuf while wedged\n"); |
| 2460 | mutex_unlock(&dev->struct_mutex); |
| 2461 | return -EIO; |
| 2462 | } |
| 2463 | |
| 2464 | if (dev_priv->mm.suspended) { |
| 2465 | DRM_ERROR("Execbuf while VT-switched.\n"); |
| 2466 | mutex_unlock(&dev->struct_mutex); |
| 2467 | return -EBUSY; |
| 2468 | } |
| 2469 | |
Keith Packard | ac94a96 | 2008-11-20 23:30:27 -0800 | [diff] [blame] | 2470 | /* Look up object handles */ |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2471 | for (i = 0; i < args->buffer_count; i++) { |
| 2472 | object_list[i] = drm_gem_object_lookup(dev, file_priv, |
| 2473 | exec_list[i].handle); |
| 2474 | if (object_list[i] == NULL) { |
| 2475 | DRM_ERROR("Invalid object handle %d at index %d\n", |
| 2476 | exec_list[i].handle, i); |
| 2477 | ret = -EBADF; |
| 2478 | goto err; |
| 2479 | } |
Keith Packard | ac94a96 | 2008-11-20 23:30:27 -0800 | [diff] [blame] | 2480 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2481 | |
Keith Packard | ac94a96 | 2008-11-20 23:30:27 -0800 | [diff] [blame] | 2482 | /* Pin and relocate */ |
| 2483 | for (pin_tries = 0; ; pin_tries++) { |
| 2484 | ret = 0; |
| 2485 | for (i = 0; i < args->buffer_count; i++) { |
| 2486 | object_list[i]->pending_read_domains = 0; |
| 2487 | object_list[i]->pending_write_domain = 0; |
| 2488 | ret = i915_gem_object_pin_and_relocate(object_list[i], |
| 2489 | file_priv, |
| 2490 | &exec_list[i]); |
| 2491 | if (ret) |
| 2492 | break; |
| 2493 | pinned = i + 1; |
| 2494 | } |
| 2495 | /* success */ |
| 2496 | if (ret == 0) |
| 2497 | break; |
| 2498 | |
| 2499 | /* error other than GTT full, or we've already tried again */ |
| 2500 | if (ret != -ENOMEM || pin_tries >= 1) { |
Eric Anholt | f1acec9 | 2008-12-19 14:47:48 -0800 | [diff] [blame] | 2501 | if (ret != -ERESTARTSYS) |
| 2502 | DRM_ERROR("Failed to pin buffers %d\n", ret); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2503 | goto err; |
| 2504 | } |
Keith Packard | ac94a96 | 2008-11-20 23:30:27 -0800 | [diff] [blame] | 2505 | |
| 2506 | /* unpin all of our buffers */ |
| 2507 | for (i = 0; i < pinned; i++) |
| 2508 | i915_gem_object_unpin(object_list[i]); |
Eric Anholt | b117763 | 2008-12-10 10:09:41 -0800 | [diff] [blame] | 2509 | pinned = 0; |
Keith Packard | ac94a96 | 2008-11-20 23:30:27 -0800 | [diff] [blame] | 2510 | |
| 2511 | /* evict everyone we can from the aperture */ |
| 2512 | ret = i915_gem_evict_everything(dev); |
| 2513 | if (ret) |
| 2514 | goto err; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2515 | } |
| 2516 | |
| 2517 | /* Set the pending read domains for the batch buffer to COMMAND */ |
| 2518 | batch_obj = object_list[args->buffer_count-1]; |
| 2519 | batch_obj->pending_read_domains = I915_GEM_DOMAIN_COMMAND; |
| 2520 | batch_obj->pending_write_domain = 0; |
| 2521 | |
| 2522 | i915_verify_inactive(dev, __FILE__, __LINE__); |
| 2523 | |
Keith Packard | 646f0f6 | 2008-11-20 23:23:03 -0800 | [diff] [blame] | 2524 | /* Zero the global flush/invalidate flags. These |
| 2525 | * will be modified as new domains are computed |
| 2526 | * for each object |
| 2527 | */ |
| 2528 | dev->invalidate_domains = 0; |
| 2529 | dev->flush_domains = 0; |
| 2530 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2531 | for (i = 0; i < args->buffer_count; i++) { |
| 2532 | struct drm_gem_object *obj = object_list[i]; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2533 | |
Keith Packard | 646f0f6 | 2008-11-20 23:23:03 -0800 | [diff] [blame] | 2534 | /* Compute new gpu domains and update invalidate/flush */ |
Keith Packard | c0d9082 | 2008-11-20 23:11:08 -0800 | [diff] [blame] | 2535 | i915_gem_object_set_to_gpu_domain(obj, |
| 2536 | obj->pending_read_domains, |
| 2537 | obj->pending_write_domain); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2538 | } |
| 2539 | |
| 2540 | i915_verify_inactive(dev, __FILE__, __LINE__); |
| 2541 | |
Keith Packard | 646f0f6 | 2008-11-20 23:23:03 -0800 | [diff] [blame] | 2542 | if (dev->invalidate_domains | dev->flush_domains) { |
| 2543 | #if WATCH_EXEC |
| 2544 | DRM_INFO("%s: invalidate_domains %08x flush_domains %08x\n", |
| 2545 | __func__, |
| 2546 | dev->invalidate_domains, |
| 2547 | dev->flush_domains); |
| 2548 | #endif |
| 2549 | i915_gem_flush(dev, |
| 2550 | dev->invalidate_domains, |
| 2551 | dev->flush_domains); |
| 2552 | if (dev->flush_domains) |
| 2553 | (void)i915_add_request(dev, dev->flush_domains); |
| 2554 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2555 | |
| 2556 | i915_verify_inactive(dev, __FILE__, __LINE__); |
| 2557 | |
| 2558 | #if WATCH_COHERENCY |
| 2559 | for (i = 0; i < args->buffer_count; i++) { |
| 2560 | i915_gem_object_check_coherency(object_list[i], |
| 2561 | exec_list[i].handle); |
| 2562 | } |
| 2563 | #endif |
| 2564 | |
| 2565 | exec_offset = exec_list[args->buffer_count - 1].offset; |
| 2566 | |
| 2567 | #if WATCH_EXEC |
| 2568 | i915_gem_dump_object(object_list[args->buffer_count - 1], |
| 2569 | args->batch_len, |
| 2570 | __func__, |
| 2571 | ~0); |
| 2572 | #endif |
| 2573 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2574 | /* Exec the batchbuffer */ |
| 2575 | ret = i915_dispatch_gem_execbuffer(dev, args, exec_offset); |
| 2576 | if (ret) { |
| 2577 | DRM_ERROR("dispatch failed %d\n", ret); |
| 2578 | goto err; |
| 2579 | } |
| 2580 | |
| 2581 | /* |
| 2582 | * Ensure that the commands in the batch buffer are |
| 2583 | * finished before the interrupt fires |
| 2584 | */ |
| 2585 | flush_domains = i915_retire_commands(dev); |
| 2586 | |
| 2587 | i915_verify_inactive(dev, __FILE__, __LINE__); |
| 2588 | |
| 2589 | /* |
| 2590 | * Get a seqno representing the execution of the current buffer, |
| 2591 | * which we can wait on. We would like to mitigate these interrupts, |
| 2592 | * likely by only creating seqnos occasionally (so that we have |
| 2593 | * *some* interrupts representing completion of buffers that we can |
| 2594 | * wait on when trying to clear up gtt space). |
| 2595 | */ |
| 2596 | seqno = i915_add_request(dev, flush_domains); |
| 2597 | BUG_ON(seqno == 0); |
| 2598 | i915_file_priv->mm.last_gem_seqno = seqno; |
| 2599 | for (i = 0; i < args->buffer_count; i++) { |
| 2600 | struct drm_gem_object *obj = object_list[i]; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2601 | |
Eric Anholt | ce44b0e | 2008-11-06 16:00:31 -0800 | [diff] [blame] | 2602 | i915_gem_object_move_to_active(obj, seqno); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2603 | #if WATCH_LRU |
| 2604 | DRM_INFO("%s: move to exec list %p\n", __func__, obj); |
| 2605 | #endif |
| 2606 | } |
| 2607 | #if WATCH_LRU |
| 2608 | i915_dump_lru(dev, __func__); |
| 2609 | #endif |
| 2610 | |
| 2611 | i915_verify_inactive(dev, __FILE__, __LINE__); |
| 2612 | |
| 2613 | /* Copy the new buffer offsets back to the user's exec list. */ |
| 2614 | ret = copy_to_user((struct drm_i915_relocation_entry __user *) |
| 2615 | (uintptr_t) args->buffers_ptr, |
| 2616 | exec_list, |
| 2617 | sizeof(*exec_list) * args->buffer_count); |
| 2618 | if (ret) |
| 2619 | DRM_ERROR("failed to copy %d exec entries " |
| 2620 | "back to user (%d)\n", |
| 2621 | args->buffer_count, ret); |
| 2622 | err: |
Julia Lawall | aad87df | 2008-12-21 16:28:47 +0100 | [diff] [blame] | 2623 | for (i = 0; i < pinned; i++) |
| 2624 | i915_gem_object_unpin(object_list[i]); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2625 | |
Julia Lawall | aad87df | 2008-12-21 16:28:47 +0100 | [diff] [blame] | 2626 | for (i = 0; i < args->buffer_count; i++) |
| 2627 | drm_gem_object_unreference(object_list[i]); |
| 2628 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2629 | mutex_unlock(&dev->struct_mutex); |
| 2630 | |
| 2631 | pre_mutex_err: |
| 2632 | drm_free(object_list, sizeof(*object_list) * args->buffer_count, |
| 2633 | DRM_MEM_DRIVER); |
| 2634 | drm_free(exec_list, sizeof(*exec_list) * args->buffer_count, |
| 2635 | DRM_MEM_DRIVER); |
| 2636 | |
| 2637 | return ret; |
| 2638 | } |
| 2639 | |
| 2640 | int |
| 2641 | i915_gem_object_pin(struct drm_gem_object *obj, uint32_t alignment) |
| 2642 | { |
| 2643 | struct drm_device *dev = obj->dev; |
| 2644 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 2645 | int ret; |
| 2646 | |
| 2647 | i915_verify_inactive(dev, __FILE__, __LINE__); |
| 2648 | if (obj_priv->gtt_space == NULL) { |
| 2649 | ret = i915_gem_object_bind_to_gtt(obj, alignment); |
| 2650 | if (ret != 0) { |
Eric Anholt | 9bb2d6f | 2008-12-23 18:42:32 -0800 | [diff] [blame] | 2651 | if (ret != -EBUSY && ret != -ERESTARTSYS) |
Eric Anholt | f1acec9 | 2008-12-19 14:47:48 -0800 | [diff] [blame] | 2652 | DRM_ERROR("Failure to bind: %d", ret); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2653 | return ret; |
| 2654 | } |
| 2655 | } |
| 2656 | obj_priv->pin_count++; |
| 2657 | |
| 2658 | /* If the object is not active and not pending a flush, |
| 2659 | * remove it from the inactive list |
| 2660 | */ |
| 2661 | if (obj_priv->pin_count == 1) { |
| 2662 | atomic_inc(&dev->pin_count); |
| 2663 | atomic_add(obj->size, &dev->pin_memory); |
| 2664 | if (!obj_priv->active && |
| 2665 | (obj->write_domain & ~(I915_GEM_DOMAIN_CPU | |
| 2666 | I915_GEM_DOMAIN_GTT)) == 0 && |
| 2667 | !list_empty(&obj_priv->list)) |
| 2668 | list_del_init(&obj_priv->list); |
| 2669 | } |
| 2670 | i915_verify_inactive(dev, __FILE__, __LINE__); |
| 2671 | |
| 2672 | return 0; |
| 2673 | } |
| 2674 | |
| 2675 | void |
| 2676 | i915_gem_object_unpin(struct drm_gem_object *obj) |
| 2677 | { |
| 2678 | struct drm_device *dev = obj->dev; |
| 2679 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 2680 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 2681 | |
| 2682 | i915_verify_inactive(dev, __FILE__, __LINE__); |
| 2683 | obj_priv->pin_count--; |
| 2684 | BUG_ON(obj_priv->pin_count < 0); |
| 2685 | BUG_ON(obj_priv->gtt_space == NULL); |
| 2686 | |
| 2687 | /* If the object is no longer pinned, and is |
| 2688 | * neither active nor being flushed, then stick it on |
| 2689 | * the inactive list |
| 2690 | */ |
| 2691 | if (obj_priv->pin_count == 0) { |
| 2692 | if (!obj_priv->active && |
| 2693 | (obj->write_domain & ~(I915_GEM_DOMAIN_CPU | |
| 2694 | I915_GEM_DOMAIN_GTT)) == 0) |
| 2695 | list_move_tail(&obj_priv->list, |
| 2696 | &dev_priv->mm.inactive_list); |
| 2697 | atomic_dec(&dev->pin_count); |
| 2698 | atomic_sub(obj->size, &dev->pin_memory); |
| 2699 | } |
| 2700 | i915_verify_inactive(dev, __FILE__, __LINE__); |
| 2701 | } |
| 2702 | |
| 2703 | int |
| 2704 | i915_gem_pin_ioctl(struct drm_device *dev, void *data, |
| 2705 | struct drm_file *file_priv) |
| 2706 | { |
| 2707 | struct drm_i915_gem_pin *args = data; |
| 2708 | struct drm_gem_object *obj; |
| 2709 | struct drm_i915_gem_object *obj_priv; |
| 2710 | int ret; |
| 2711 | |
| 2712 | mutex_lock(&dev->struct_mutex); |
| 2713 | |
| 2714 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
| 2715 | if (obj == NULL) { |
| 2716 | DRM_ERROR("Bad handle in i915_gem_pin_ioctl(): %d\n", |
| 2717 | args->handle); |
| 2718 | mutex_unlock(&dev->struct_mutex); |
| 2719 | return -EBADF; |
| 2720 | } |
| 2721 | obj_priv = obj->driver_private; |
| 2722 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 2723 | if (obj_priv->pin_filp != NULL && obj_priv->pin_filp != file_priv) { |
| 2724 | DRM_ERROR("Already pinned in i915_gem_pin_ioctl(): %d\n", |
| 2725 | args->handle); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2726 | mutex_unlock(&dev->struct_mutex); |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 2727 | return -EINVAL; |
| 2728 | } |
| 2729 | |
| 2730 | obj_priv->user_pin_count++; |
| 2731 | obj_priv->pin_filp = file_priv; |
| 2732 | if (obj_priv->user_pin_count == 1) { |
| 2733 | ret = i915_gem_object_pin(obj, args->alignment); |
| 2734 | if (ret != 0) { |
| 2735 | drm_gem_object_unreference(obj); |
| 2736 | mutex_unlock(&dev->struct_mutex); |
| 2737 | return ret; |
| 2738 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2739 | } |
| 2740 | |
| 2741 | /* XXX - flush the CPU caches for pinned objects |
| 2742 | * as the X server doesn't manage domains yet |
| 2743 | */ |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2744 | i915_gem_object_flush_cpu_write_domain(obj); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2745 | args->offset = obj_priv->gtt_offset; |
| 2746 | drm_gem_object_unreference(obj); |
| 2747 | mutex_unlock(&dev->struct_mutex); |
| 2748 | |
| 2749 | return 0; |
| 2750 | } |
| 2751 | |
| 2752 | int |
| 2753 | i915_gem_unpin_ioctl(struct drm_device *dev, void *data, |
| 2754 | struct drm_file *file_priv) |
| 2755 | { |
| 2756 | struct drm_i915_gem_pin *args = data; |
| 2757 | struct drm_gem_object *obj; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 2758 | struct drm_i915_gem_object *obj_priv; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2759 | |
| 2760 | mutex_lock(&dev->struct_mutex); |
| 2761 | |
| 2762 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
| 2763 | if (obj == NULL) { |
| 2764 | DRM_ERROR("Bad handle in i915_gem_unpin_ioctl(): %d\n", |
| 2765 | args->handle); |
| 2766 | mutex_unlock(&dev->struct_mutex); |
| 2767 | return -EBADF; |
| 2768 | } |
| 2769 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 2770 | obj_priv = obj->driver_private; |
| 2771 | if (obj_priv->pin_filp != file_priv) { |
| 2772 | DRM_ERROR("Not pinned by caller in i915_gem_pin_ioctl(): %d\n", |
| 2773 | args->handle); |
| 2774 | drm_gem_object_unreference(obj); |
| 2775 | mutex_unlock(&dev->struct_mutex); |
| 2776 | return -EINVAL; |
| 2777 | } |
| 2778 | obj_priv->user_pin_count--; |
| 2779 | if (obj_priv->user_pin_count == 0) { |
| 2780 | obj_priv->pin_filp = NULL; |
| 2781 | i915_gem_object_unpin(obj); |
| 2782 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2783 | |
| 2784 | drm_gem_object_unreference(obj); |
| 2785 | mutex_unlock(&dev->struct_mutex); |
| 2786 | return 0; |
| 2787 | } |
| 2788 | |
| 2789 | int |
| 2790 | i915_gem_busy_ioctl(struct drm_device *dev, void *data, |
| 2791 | struct drm_file *file_priv) |
| 2792 | { |
| 2793 | struct drm_i915_gem_busy *args = data; |
| 2794 | struct drm_gem_object *obj; |
| 2795 | struct drm_i915_gem_object *obj_priv; |
| 2796 | |
| 2797 | mutex_lock(&dev->struct_mutex); |
| 2798 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
| 2799 | if (obj == NULL) { |
| 2800 | DRM_ERROR("Bad handle in i915_gem_busy_ioctl(): %d\n", |
| 2801 | args->handle); |
| 2802 | mutex_unlock(&dev->struct_mutex); |
| 2803 | return -EBADF; |
| 2804 | } |
| 2805 | |
| 2806 | obj_priv = obj->driver_private; |
Eric Anholt | c4de0a5 | 2008-12-14 19:05:04 -0800 | [diff] [blame] | 2807 | /* Don't count being on the flushing list against the object being |
| 2808 | * done. Otherwise, a buffer left on the flushing list but not getting |
| 2809 | * flushed (because nobody's flushing that domain) won't ever return |
| 2810 | * unbusy and get reused by libdrm's bo cache. The other expected |
| 2811 | * consumer of this interface, OpenGL's occlusion queries, also specs |
| 2812 | * that the objects get unbusy "eventually" without any interference. |
| 2813 | */ |
| 2814 | args->busy = obj_priv->active && obj_priv->last_rendering_seqno != 0; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2815 | |
| 2816 | drm_gem_object_unreference(obj); |
| 2817 | mutex_unlock(&dev->struct_mutex); |
| 2818 | return 0; |
| 2819 | } |
| 2820 | |
| 2821 | int |
| 2822 | i915_gem_throttle_ioctl(struct drm_device *dev, void *data, |
| 2823 | struct drm_file *file_priv) |
| 2824 | { |
| 2825 | return i915_gem_ring_throttle(dev, file_priv); |
| 2826 | } |
| 2827 | |
| 2828 | int i915_gem_init_object(struct drm_gem_object *obj) |
| 2829 | { |
| 2830 | struct drm_i915_gem_object *obj_priv; |
| 2831 | |
| 2832 | obj_priv = drm_calloc(1, sizeof(*obj_priv), DRM_MEM_DRIVER); |
| 2833 | if (obj_priv == NULL) |
| 2834 | return -ENOMEM; |
| 2835 | |
| 2836 | /* |
| 2837 | * We've just allocated pages from the kernel, |
| 2838 | * so they've just been written by the CPU with |
| 2839 | * zeros. They'll need to be clflushed before we |
| 2840 | * use them with the GPU. |
| 2841 | */ |
| 2842 | obj->write_domain = I915_GEM_DOMAIN_CPU; |
| 2843 | obj->read_domains = I915_GEM_DOMAIN_CPU; |
| 2844 | |
Keith Packard | ba1eb1d | 2008-10-14 19:55:10 -0700 | [diff] [blame] | 2845 | obj_priv->agp_type = AGP_USER_MEMORY; |
| 2846 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2847 | obj->driver_private = obj_priv; |
| 2848 | obj_priv->obj = obj; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2849 | obj_priv->fence_reg = I915_FENCE_REG_NONE; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2850 | INIT_LIST_HEAD(&obj_priv->list); |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2851 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2852 | return 0; |
| 2853 | } |
| 2854 | |
| 2855 | void i915_gem_free_object(struct drm_gem_object *obj) |
| 2856 | { |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2857 | struct drm_device *dev = obj->dev; |
| 2858 | struct drm_gem_mm *mm = dev->mm_private; |
| 2859 | struct drm_map_list *list; |
| 2860 | struct drm_map *map; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2861 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 2862 | |
| 2863 | while (obj_priv->pin_count > 0) |
| 2864 | i915_gem_object_unpin(obj); |
| 2865 | |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 2866 | if (obj_priv->phys_obj) |
| 2867 | i915_gem_detach_phys_object(dev, obj); |
| 2868 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2869 | i915_gem_object_unbind(obj); |
| 2870 | |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2871 | list = &obj->map_list; |
| 2872 | drm_ht_remove_item(&mm->offset_hash, &list->hash); |
| 2873 | |
| 2874 | if (list->file_offset_node) { |
| 2875 | drm_mm_put_block(list->file_offset_node); |
| 2876 | list->file_offset_node = NULL; |
| 2877 | } |
| 2878 | |
| 2879 | map = list->map; |
| 2880 | if (map) { |
| 2881 | drm_free(map, sizeof(*map), DRM_MEM_DRIVER); |
| 2882 | list->map = NULL; |
| 2883 | } |
| 2884 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2885 | drm_free(obj_priv->page_cpu_valid, 1, DRM_MEM_DRIVER); |
| 2886 | drm_free(obj->driver_private, 1, DRM_MEM_DRIVER); |
| 2887 | } |
| 2888 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2889 | /** Unbinds all objects that are on the given buffer list. */ |
| 2890 | static int |
| 2891 | i915_gem_evict_from_list(struct drm_device *dev, struct list_head *head) |
| 2892 | { |
| 2893 | struct drm_gem_object *obj; |
| 2894 | struct drm_i915_gem_object *obj_priv; |
| 2895 | int ret; |
| 2896 | |
| 2897 | while (!list_empty(head)) { |
| 2898 | obj_priv = list_first_entry(head, |
| 2899 | struct drm_i915_gem_object, |
| 2900 | list); |
| 2901 | obj = obj_priv->obj; |
| 2902 | |
| 2903 | if (obj_priv->pin_count != 0) { |
| 2904 | DRM_ERROR("Pinned object in unbind list\n"); |
| 2905 | mutex_unlock(&dev->struct_mutex); |
| 2906 | return -EINVAL; |
| 2907 | } |
| 2908 | |
| 2909 | ret = i915_gem_object_unbind(obj); |
| 2910 | if (ret != 0) { |
| 2911 | DRM_ERROR("Error unbinding object in LeaveVT: %d\n", |
| 2912 | ret); |
| 2913 | mutex_unlock(&dev->struct_mutex); |
| 2914 | return ret; |
| 2915 | } |
| 2916 | } |
| 2917 | |
| 2918 | |
| 2919 | return 0; |
| 2920 | } |
| 2921 | |
| 2922 | static int |
| 2923 | i915_gem_idle(struct drm_device *dev) |
| 2924 | { |
| 2925 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 2926 | uint32_t seqno, cur_seqno, last_seqno; |
| 2927 | int stuck, ret; |
| 2928 | |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 2929 | mutex_lock(&dev->struct_mutex); |
| 2930 | |
| 2931 | if (dev_priv->mm.suspended || dev_priv->ring.ring_obj == NULL) { |
| 2932 | mutex_unlock(&dev->struct_mutex); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2933 | return 0; |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 2934 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2935 | |
| 2936 | /* Hack! Don't let anybody do execbuf while we don't control the chip. |
| 2937 | * We need to replace this with a semaphore, or something. |
| 2938 | */ |
| 2939 | dev_priv->mm.suspended = 1; |
| 2940 | |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 2941 | /* Cancel the retire work handler, wait for it to finish if running |
| 2942 | */ |
| 2943 | mutex_unlock(&dev->struct_mutex); |
| 2944 | cancel_delayed_work_sync(&dev_priv->mm.retire_work); |
| 2945 | mutex_lock(&dev->struct_mutex); |
| 2946 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2947 | i915_kernel_lost_context(dev); |
| 2948 | |
| 2949 | /* Flush the GPU along with all non-CPU write domains |
| 2950 | */ |
| 2951 | i915_gem_flush(dev, ~(I915_GEM_DOMAIN_CPU|I915_GEM_DOMAIN_GTT), |
| 2952 | ~(I915_GEM_DOMAIN_CPU|I915_GEM_DOMAIN_GTT)); |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2953 | seqno = i915_add_request(dev, ~I915_GEM_DOMAIN_CPU); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2954 | |
| 2955 | if (seqno == 0) { |
| 2956 | mutex_unlock(&dev->struct_mutex); |
| 2957 | return -ENOMEM; |
| 2958 | } |
| 2959 | |
| 2960 | dev_priv->mm.waiting_gem_seqno = seqno; |
| 2961 | last_seqno = 0; |
| 2962 | stuck = 0; |
| 2963 | for (;;) { |
| 2964 | cur_seqno = i915_get_gem_seqno(dev); |
| 2965 | if (i915_seqno_passed(cur_seqno, seqno)) |
| 2966 | break; |
| 2967 | if (last_seqno == cur_seqno) { |
| 2968 | if (stuck++ > 100) { |
| 2969 | DRM_ERROR("hardware wedged\n"); |
| 2970 | dev_priv->mm.wedged = 1; |
| 2971 | DRM_WAKEUP(&dev_priv->irq_queue); |
| 2972 | break; |
| 2973 | } |
| 2974 | } |
| 2975 | msleep(10); |
| 2976 | last_seqno = cur_seqno; |
| 2977 | } |
| 2978 | dev_priv->mm.waiting_gem_seqno = 0; |
| 2979 | |
| 2980 | i915_gem_retire_requests(dev); |
| 2981 | |
Eric Anholt | 28dfe52 | 2008-11-13 15:00:55 -0800 | [diff] [blame] | 2982 | if (!dev_priv->mm.wedged) { |
| 2983 | /* Active and flushing should now be empty as we've |
| 2984 | * waited for a sequence higher than any pending execbuffer |
| 2985 | */ |
| 2986 | WARN_ON(!list_empty(&dev_priv->mm.active_list)); |
| 2987 | WARN_ON(!list_empty(&dev_priv->mm.flushing_list)); |
| 2988 | /* Request should now be empty as we've also waited |
| 2989 | * for the last request in the list |
| 2990 | */ |
| 2991 | WARN_ON(!list_empty(&dev_priv->mm.request_list)); |
| 2992 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2993 | |
Eric Anholt | 28dfe52 | 2008-11-13 15:00:55 -0800 | [diff] [blame] | 2994 | /* Empty the active and flushing lists to inactive. If there's |
| 2995 | * anything left at this point, it means that we're wedged and |
| 2996 | * nothing good's going to happen by leaving them there. So strip |
| 2997 | * the GPU domains and just stuff them onto inactive. |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2998 | */ |
Eric Anholt | 28dfe52 | 2008-11-13 15:00:55 -0800 | [diff] [blame] | 2999 | while (!list_empty(&dev_priv->mm.active_list)) { |
| 3000 | struct drm_i915_gem_object *obj_priv; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3001 | |
Eric Anholt | 28dfe52 | 2008-11-13 15:00:55 -0800 | [diff] [blame] | 3002 | obj_priv = list_first_entry(&dev_priv->mm.active_list, |
| 3003 | struct drm_i915_gem_object, |
| 3004 | list); |
| 3005 | obj_priv->obj->write_domain &= ~I915_GEM_GPU_DOMAINS; |
| 3006 | i915_gem_object_move_to_inactive(obj_priv->obj); |
| 3007 | } |
| 3008 | |
| 3009 | while (!list_empty(&dev_priv->mm.flushing_list)) { |
| 3010 | struct drm_i915_gem_object *obj_priv; |
| 3011 | |
Eric Anholt | 151903d | 2008-12-01 10:23:21 +1000 | [diff] [blame] | 3012 | obj_priv = list_first_entry(&dev_priv->mm.flushing_list, |
Eric Anholt | 28dfe52 | 2008-11-13 15:00:55 -0800 | [diff] [blame] | 3013 | struct drm_i915_gem_object, |
| 3014 | list); |
| 3015 | obj_priv->obj->write_domain &= ~I915_GEM_GPU_DOMAINS; |
| 3016 | i915_gem_object_move_to_inactive(obj_priv->obj); |
| 3017 | } |
| 3018 | |
| 3019 | |
| 3020 | /* Move all inactive buffers out of the GTT. */ |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3021 | ret = i915_gem_evict_from_list(dev, &dev_priv->mm.inactive_list); |
Eric Anholt | 28dfe52 | 2008-11-13 15:00:55 -0800 | [diff] [blame] | 3022 | WARN_ON(!list_empty(&dev_priv->mm.inactive_list)); |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 3023 | if (ret) { |
| 3024 | mutex_unlock(&dev->struct_mutex); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3025 | return ret; |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 3026 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3027 | |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 3028 | i915_gem_cleanup_ringbuffer(dev); |
| 3029 | mutex_unlock(&dev->struct_mutex); |
| 3030 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3031 | return 0; |
| 3032 | } |
| 3033 | |
| 3034 | static int |
| 3035 | i915_gem_init_hws(struct drm_device *dev) |
| 3036 | { |
| 3037 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 3038 | struct drm_gem_object *obj; |
| 3039 | struct drm_i915_gem_object *obj_priv; |
| 3040 | int ret; |
| 3041 | |
| 3042 | /* If we need a physical address for the status page, it's already |
| 3043 | * initialized at driver load time. |
| 3044 | */ |
| 3045 | if (!I915_NEED_GFX_HWS(dev)) |
| 3046 | return 0; |
| 3047 | |
| 3048 | obj = drm_gem_object_alloc(dev, 4096); |
| 3049 | if (obj == NULL) { |
| 3050 | DRM_ERROR("Failed to allocate status page\n"); |
| 3051 | return -ENOMEM; |
| 3052 | } |
| 3053 | obj_priv = obj->driver_private; |
Keith Packard | ba1eb1d | 2008-10-14 19:55:10 -0700 | [diff] [blame] | 3054 | obj_priv->agp_type = AGP_USER_CACHED_MEMORY; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3055 | |
| 3056 | ret = i915_gem_object_pin(obj, 4096); |
| 3057 | if (ret != 0) { |
| 3058 | drm_gem_object_unreference(obj); |
| 3059 | return ret; |
| 3060 | } |
| 3061 | |
| 3062 | dev_priv->status_gfx_addr = obj_priv->gtt_offset; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3063 | |
Keith Packard | ba1eb1d | 2008-10-14 19:55:10 -0700 | [diff] [blame] | 3064 | dev_priv->hw_status_page = kmap(obj_priv->page_list[0]); |
| 3065 | if (dev_priv->hw_status_page == NULL) { |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3066 | DRM_ERROR("Failed to map status page.\n"); |
| 3067 | memset(&dev_priv->hws_map, 0, sizeof(dev_priv->hws_map)); |
| 3068 | drm_gem_object_unreference(obj); |
| 3069 | return -EINVAL; |
| 3070 | } |
| 3071 | dev_priv->hws_obj = obj; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3072 | memset(dev_priv->hw_status_page, 0, PAGE_SIZE); |
| 3073 | I915_WRITE(HWS_PGA, dev_priv->status_gfx_addr); |
Keith Packard | ba1eb1d | 2008-10-14 19:55:10 -0700 | [diff] [blame] | 3074 | I915_READ(HWS_PGA); /* posting read */ |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3075 | DRM_DEBUG("hws offset: 0x%08x\n", dev_priv->status_gfx_addr); |
| 3076 | |
| 3077 | return 0; |
| 3078 | } |
| 3079 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 3080 | int |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3081 | i915_gem_init_ringbuffer(struct drm_device *dev) |
| 3082 | { |
| 3083 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 3084 | struct drm_gem_object *obj; |
| 3085 | struct drm_i915_gem_object *obj_priv; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 3086 | drm_i915_ring_buffer_t *ring = &dev_priv->ring; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3087 | int ret; |
Keith Packard | 50aa253 | 2008-10-14 17:20:35 -0700 | [diff] [blame] | 3088 | u32 head; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3089 | |
| 3090 | ret = i915_gem_init_hws(dev); |
| 3091 | if (ret != 0) |
| 3092 | return ret; |
| 3093 | |
| 3094 | obj = drm_gem_object_alloc(dev, 128 * 1024); |
| 3095 | if (obj == NULL) { |
| 3096 | DRM_ERROR("Failed to allocate ringbuffer\n"); |
| 3097 | return -ENOMEM; |
| 3098 | } |
| 3099 | obj_priv = obj->driver_private; |
| 3100 | |
| 3101 | ret = i915_gem_object_pin(obj, 4096); |
| 3102 | if (ret != 0) { |
| 3103 | drm_gem_object_unreference(obj); |
| 3104 | return ret; |
| 3105 | } |
| 3106 | |
| 3107 | /* Set up the kernel mapping for the ring. */ |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 3108 | ring->Size = obj->size; |
| 3109 | ring->tail_mask = obj->size - 1; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3110 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 3111 | ring->map.offset = dev->agp->base + obj_priv->gtt_offset; |
| 3112 | ring->map.size = obj->size; |
| 3113 | ring->map.type = 0; |
| 3114 | ring->map.flags = 0; |
| 3115 | ring->map.mtrr = 0; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3116 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 3117 | drm_core_ioremap_wc(&ring->map, dev); |
| 3118 | if (ring->map.handle == NULL) { |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3119 | DRM_ERROR("Failed to map ringbuffer.\n"); |
| 3120 | memset(&dev_priv->ring, 0, sizeof(dev_priv->ring)); |
| 3121 | drm_gem_object_unreference(obj); |
| 3122 | return -EINVAL; |
| 3123 | } |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 3124 | ring->ring_obj = obj; |
| 3125 | ring->virtual_start = ring->map.handle; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3126 | |
| 3127 | /* Stop the ring if it's running. */ |
| 3128 | I915_WRITE(PRB0_CTL, 0); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3129 | I915_WRITE(PRB0_TAIL, 0); |
Keith Packard | 50aa253 | 2008-10-14 17:20:35 -0700 | [diff] [blame] | 3130 | I915_WRITE(PRB0_HEAD, 0); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3131 | |
| 3132 | /* Initialize the ring. */ |
| 3133 | I915_WRITE(PRB0_START, obj_priv->gtt_offset); |
Keith Packard | 50aa253 | 2008-10-14 17:20:35 -0700 | [diff] [blame] | 3134 | head = I915_READ(PRB0_HEAD) & HEAD_ADDR; |
| 3135 | |
| 3136 | /* G45 ring initialization fails to reset head to zero */ |
| 3137 | if (head != 0) { |
| 3138 | DRM_ERROR("Ring head not reset to zero " |
| 3139 | "ctl %08x head %08x tail %08x start %08x\n", |
| 3140 | I915_READ(PRB0_CTL), |
| 3141 | I915_READ(PRB0_HEAD), |
| 3142 | I915_READ(PRB0_TAIL), |
| 3143 | I915_READ(PRB0_START)); |
| 3144 | I915_WRITE(PRB0_HEAD, 0); |
| 3145 | |
| 3146 | DRM_ERROR("Ring head forced to zero " |
| 3147 | "ctl %08x head %08x tail %08x start %08x\n", |
| 3148 | I915_READ(PRB0_CTL), |
| 3149 | I915_READ(PRB0_HEAD), |
| 3150 | I915_READ(PRB0_TAIL), |
| 3151 | I915_READ(PRB0_START)); |
| 3152 | } |
| 3153 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3154 | I915_WRITE(PRB0_CTL, |
| 3155 | ((obj->size - 4096) & RING_NR_PAGES) | |
| 3156 | RING_NO_REPORT | |
| 3157 | RING_VALID); |
| 3158 | |
Keith Packard | 50aa253 | 2008-10-14 17:20:35 -0700 | [diff] [blame] | 3159 | head = I915_READ(PRB0_HEAD) & HEAD_ADDR; |
| 3160 | |
| 3161 | /* If the head is still not zero, the ring is dead */ |
| 3162 | if (head != 0) { |
| 3163 | DRM_ERROR("Ring initialization failed " |
| 3164 | "ctl %08x head %08x tail %08x start %08x\n", |
| 3165 | I915_READ(PRB0_CTL), |
| 3166 | I915_READ(PRB0_HEAD), |
| 3167 | I915_READ(PRB0_TAIL), |
| 3168 | I915_READ(PRB0_START)); |
| 3169 | return -EIO; |
| 3170 | } |
| 3171 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3172 | /* Update our cache of the ring state */ |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 3173 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
| 3174 | i915_kernel_lost_context(dev); |
| 3175 | else { |
| 3176 | ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR; |
| 3177 | ring->tail = I915_READ(PRB0_TAIL) & TAIL_ADDR; |
| 3178 | ring->space = ring->head - (ring->tail + 8); |
| 3179 | if (ring->space < 0) |
| 3180 | ring->space += ring->Size; |
| 3181 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3182 | |
| 3183 | return 0; |
| 3184 | } |
| 3185 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 3186 | void |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3187 | i915_gem_cleanup_ringbuffer(struct drm_device *dev) |
| 3188 | { |
| 3189 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 3190 | |
| 3191 | if (dev_priv->ring.ring_obj == NULL) |
| 3192 | return; |
| 3193 | |
| 3194 | drm_core_ioremapfree(&dev_priv->ring.map, dev); |
| 3195 | |
| 3196 | i915_gem_object_unpin(dev_priv->ring.ring_obj); |
| 3197 | drm_gem_object_unreference(dev_priv->ring.ring_obj); |
| 3198 | dev_priv->ring.ring_obj = NULL; |
| 3199 | memset(&dev_priv->ring, 0, sizeof(dev_priv->ring)); |
| 3200 | |
| 3201 | if (dev_priv->hws_obj != NULL) { |
Keith Packard | ba1eb1d | 2008-10-14 19:55:10 -0700 | [diff] [blame] | 3202 | struct drm_gem_object *obj = dev_priv->hws_obj; |
| 3203 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 3204 | |
| 3205 | kunmap(obj_priv->page_list[0]); |
| 3206 | i915_gem_object_unpin(obj); |
| 3207 | drm_gem_object_unreference(obj); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3208 | dev_priv->hws_obj = NULL; |
| 3209 | memset(&dev_priv->hws_map, 0, sizeof(dev_priv->hws_map)); |
Keith Packard | ba1eb1d | 2008-10-14 19:55:10 -0700 | [diff] [blame] | 3210 | dev_priv->hw_status_page = NULL; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3211 | |
| 3212 | /* Write high address into HWS_PGA when disabling. */ |
| 3213 | I915_WRITE(HWS_PGA, 0x1ffff000); |
| 3214 | } |
| 3215 | } |
| 3216 | |
| 3217 | int |
| 3218 | i915_gem_entervt_ioctl(struct drm_device *dev, void *data, |
| 3219 | struct drm_file *file_priv) |
| 3220 | { |
| 3221 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 3222 | int ret; |
| 3223 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 3224 | if (drm_core_check_feature(dev, DRIVER_MODESET)) |
| 3225 | return 0; |
| 3226 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3227 | if (dev_priv->mm.wedged) { |
| 3228 | DRM_ERROR("Reenabling wedged hardware, good luck\n"); |
| 3229 | dev_priv->mm.wedged = 0; |
| 3230 | } |
| 3231 | |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 3232 | dev_priv->mm.gtt_mapping = io_mapping_create_wc(dev->agp->base, |
| 3233 | dev->agp->agp_info.aper_size |
| 3234 | * 1024 * 1024); |
| 3235 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3236 | mutex_lock(&dev->struct_mutex); |
Eric Anholt | 9bb2d6f | 2008-12-23 18:42:32 -0800 | [diff] [blame] | 3237 | dev_priv->mm.suspended = 0; |
| 3238 | |
| 3239 | ret = i915_gem_init_ringbuffer(dev); |
| 3240 | if (ret != 0) |
| 3241 | return ret; |
| 3242 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3243 | BUG_ON(!list_empty(&dev_priv->mm.active_list)); |
| 3244 | BUG_ON(!list_empty(&dev_priv->mm.flushing_list)); |
| 3245 | BUG_ON(!list_empty(&dev_priv->mm.inactive_list)); |
| 3246 | BUG_ON(!list_empty(&dev_priv->mm.request_list)); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3247 | mutex_unlock(&dev->struct_mutex); |
Kristian Høgsberg | dbb19d3 | 2008-08-20 11:04:27 -0400 | [diff] [blame] | 3248 | |
| 3249 | drm_irq_install(dev); |
| 3250 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3251 | return 0; |
| 3252 | } |
| 3253 | |
| 3254 | int |
| 3255 | i915_gem_leavevt_ioctl(struct drm_device *dev, void *data, |
| 3256 | struct drm_file *file_priv) |
| 3257 | { |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 3258 | drm_i915_private_t *dev_priv = dev->dev_private; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3259 | int ret; |
| 3260 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 3261 | if (drm_core_check_feature(dev, DRIVER_MODESET)) |
| 3262 | return 0; |
| 3263 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3264 | ret = i915_gem_idle(dev); |
Kristian Høgsberg | dbb19d3 | 2008-08-20 11:04:27 -0400 | [diff] [blame] | 3265 | drm_irq_uninstall(dev); |
| 3266 | |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 3267 | io_mapping_free(dev_priv->mm.gtt_mapping); |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 3268 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3269 | } |
| 3270 | |
| 3271 | void |
| 3272 | i915_gem_lastclose(struct drm_device *dev) |
| 3273 | { |
| 3274 | int ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3275 | |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 3276 | ret = i915_gem_idle(dev); |
| 3277 | if (ret) |
| 3278 | DRM_ERROR("failed to idle hardware: %d\n", ret); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3279 | } |
| 3280 | |
| 3281 | void |
| 3282 | i915_gem_load(struct drm_device *dev) |
| 3283 | { |
| 3284 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 3285 | |
| 3286 | INIT_LIST_HEAD(&dev_priv->mm.active_list); |
| 3287 | INIT_LIST_HEAD(&dev_priv->mm.flushing_list); |
| 3288 | INIT_LIST_HEAD(&dev_priv->mm.inactive_list); |
| 3289 | INIT_LIST_HEAD(&dev_priv->mm.request_list); |
| 3290 | INIT_DELAYED_WORK(&dev_priv->mm.retire_work, |
| 3291 | i915_gem_retire_work_handler); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3292 | dev_priv->mm.next_gem_seqno = 1; |
| 3293 | |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 3294 | /* Old X drivers will take 0-2 for front, back, depth buffers */ |
| 3295 | dev_priv->fence_reg_start = 3; |
| 3296 | |
| 3297 | if (IS_I965G(dev)) |
| 3298 | dev_priv->num_fence_regs = 16; |
| 3299 | else |
| 3300 | dev_priv->num_fence_regs = 8; |
| 3301 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3302 | i915_gem_detect_bit_6_swizzle(dev); |
| 3303 | } |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 3304 | |
| 3305 | /* |
| 3306 | * Create a physically contiguous memory object for this object |
| 3307 | * e.g. for cursor + overlay regs |
| 3308 | */ |
| 3309 | int i915_gem_init_phys_object(struct drm_device *dev, |
| 3310 | int id, int size) |
| 3311 | { |
| 3312 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 3313 | struct drm_i915_gem_phys_object *phys_obj; |
| 3314 | int ret; |
| 3315 | |
| 3316 | if (dev_priv->mm.phys_objs[id - 1] || !size) |
| 3317 | return 0; |
| 3318 | |
| 3319 | phys_obj = drm_calloc(1, sizeof(struct drm_i915_gem_phys_object), DRM_MEM_DRIVER); |
| 3320 | if (!phys_obj) |
| 3321 | return -ENOMEM; |
| 3322 | |
| 3323 | phys_obj->id = id; |
| 3324 | |
| 3325 | phys_obj->handle = drm_pci_alloc(dev, size, 0, 0xffffffff); |
| 3326 | if (!phys_obj->handle) { |
| 3327 | ret = -ENOMEM; |
| 3328 | goto kfree_obj; |
| 3329 | } |
| 3330 | #ifdef CONFIG_X86 |
| 3331 | set_memory_wc((unsigned long)phys_obj->handle->vaddr, phys_obj->handle->size / PAGE_SIZE); |
| 3332 | #endif |
| 3333 | |
| 3334 | dev_priv->mm.phys_objs[id - 1] = phys_obj; |
| 3335 | |
| 3336 | return 0; |
| 3337 | kfree_obj: |
| 3338 | drm_free(phys_obj, sizeof(struct drm_i915_gem_phys_object), DRM_MEM_DRIVER); |
| 3339 | return ret; |
| 3340 | } |
| 3341 | |
| 3342 | void i915_gem_free_phys_object(struct drm_device *dev, int id) |
| 3343 | { |
| 3344 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 3345 | struct drm_i915_gem_phys_object *phys_obj; |
| 3346 | |
| 3347 | if (!dev_priv->mm.phys_objs[id - 1]) |
| 3348 | return; |
| 3349 | |
| 3350 | phys_obj = dev_priv->mm.phys_objs[id - 1]; |
| 3351 | if (phys_obj->cur_obj) { |
| 3352 | i915_gem_detach_phys_object(dev, phys_obj->cur_obj); |
| 3353 | } |
| 3354 | |
| 3355 | #ifdef CONFIG_X86 |
| 3356 | set_memory_wb((unsigned long)phys_obj->handle->vaddr, phys_obj->handle->size / PAGE_SIZE); |
| 3357 | #endif |
| 3358 | drm_pci_free(dev, phys_obj->handle); |
| 3359 | kfree(phys_obj); |
| 3360 | dev_priv->mm.phys_objs[id - 1] = NULL; |
| 3361 | } |
| 3362 | |
| 3363 | void i915_gem_free_all_phys_object(struct drm_device *dev) |
| 3364 | { |
| 3365 | int i; |
| 3366 | |
| 3367 | for (i = 0; i < I915_MAX_PHYS_OBJECT; i++) |
| 3368 | i915_gem_free_phys_object(dev, i); |
| 3369 | } |
| 3370 | |
| 3371 | void i915_gem_detach_phys_object(struct drm_device *dev, |
| 3372 | struct drm_gem_object *obj) |
| 3373 | { |
| 3374 | struct drm_i915_gem_object *obj_priv; |
| 3375 | int i; |
| 3376 | int ret; |
| 3377 | int page_count; |
| 3378 | |
| 3379 | obj_priv = obj->driver_private; |
| 3380 | if (!obj_priv->phys_obj) |
| 3381 | return; |
| 3382 | |
| 3383 | ret = i915_gem_object_get_page_list(obj); |
| 3384 | if (ret) |
| 3385 | goto out; |
| 3386 | |
| 3387 | page_count = obj->size / PAGE_SIZE; |
| 3388 | |
| 3389 | for (i = 0; i < page_count; i++) { |
| 3390 | char *dst = kmap_atomic(obj_priv->page_list[i], KM_USER0); |
| 3391 | char *src = obj_priv->phys_obj->handle->vaddr + (i * PAGE_SIZE); |
| 3392 | |
| 3393 | memcpy(dst, src, PAGE_SIZE); |
| 3394 | kunmap_atomic(dst, KM_USER0); |
| 3395 | } |
| 3396 | drm_clflush_pages(obj_priv->page_list, page_count); |
| 3397 | drm_agp_chipset_flush(dev); |
| 3398 | out: |
| 3399 | obj_priv->phys_obj->cur_obj = NULL; |
| 3400 | obj_priv->phys_obj = NULL; |
| 3401 | } |
| 3402 | |
| 3403 | int |
| 3404 | i915_gem_attach_phys_object(struct drm_device *dev, |
| 3405 | struct drm_gem_object *obj, int id) |
| 3406 | { |
| 3407 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 3408 | struct drm_i915_gem_object *obj_priv; |
| 3409 | int ret = 0; |
| 3410 | int page_count; |
| 3411 | int i; |
| 3412 | |
| 3413 | if (id > I915_MAX_PHYS_OBJECT) |
| 3414 | return -EINVAL; |
| 3415 | |
| 3416 | obj_priv = obj->driver_private; |
| 3417 | |
| 3418 | if (obj_priv->phys_obj) { |
| 3419 | if (obj_priv->phys_obj->id == id) |
| 3420 | return 0; |
| 3421 | i915_gem_detach_phys_object(dev, obj); |
| 3422 | } |
| 3423 | |
| 3424 | |
| 3425 | /* create a new object */ |
| 3426 | if (!dev_priv->mm.phys_objs[id - 1]) { |
| 3427 | ret = i915_gem_init_phys_object(dev, id, |
| 3428 | obj->size); |
| 3429 | if (ret) { |
Linus Torvalds | aeb565d | 2009-01-26 10:01:53 -0800 | [diff] [blame^] | 3430 | DRM_ERROR("failed to init phys object %d size: %zu\n", id, obj->size); |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 3431 | goto out; |
| 3432 | } |
| 3433 | } |
| 3434 | |
| 3435 | /* bind to the object */ |
| 3436 | obj_priv->phys_obj = dev_priv->mm.phys_objs[id - 1]; |
| 3437 | obj_priv->phys_obj->cur_obj = obj; |
| 3438 | |
| 3439 | ret = i915_gem_object_get_page_list(obj); |
| 3440 | if (ret) { |
| 3441 | DRM_ERROR("failed to get page list\n"); |
| 3442 | goto out; |
| 3443 | } |
| 3444 | |
| 3445 | page_count = obj->size / PAGE_SIZE; |
| 3446 | |
| 3447 | for (i = 0; i < page_count; i++) { |
| 3448 | char *src = kmap_atomic(obj_priv->page_list[i], KM_USER0); |
| 3449 | char *dst = obj_priv->phys_obj->handle->vaddr + (i * PAGE_SIZE); |
| 3450 | |
| 3451 | memcpy(dst, src, PAGE_SIZE); |
| 3452 | kunmap_atomic(src, KM_USER0); |
| 3453 | } |
| 3454 | |
| 3455 | return 0; |
| 3456 | out: |
| 3457 | return ret; |
| 3458 | } |
| 3459 | |
| 3460 | static int |
| 3461 | i915_gem_phys_pwrite(struct drm_device *dev, struct drm_gem_object *obj, |
| 3462 | struct drm_i915_gem_pwrite *args, |
| 3463 | struct drm_file *file_priv) |
| 3464 | { |
| 3465 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 3466 | void *obj_addr; |
| 3467 | int ret; |
| 3468 | char __user *user_data; |
| 3469 | |
| 3470 | user_data = (char __user *) (uintptr_t) args->data_ptr; |
| 3471 | obj_addr = obj_priv->phys_obj->handle->vaddr + args->offset; |
| 3472 | |
| 3473 | DRM_ERROR("obj_addr %p, %lld\n", obj_addr, args->size); |
| 3474 | ret = copy_from_user(obj_addr, user_data, args->size); |
| 3475 | if (ret) |
| 3476 | return -EFAULT; |
| 3477 | |
| 3478 | drm_agp_chipset_flush(dev); |
| 3479 | return 0; |
| 3480 | } |