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" |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 32 | #include "i915_trace.h" |
Jesse Barnes | 652c393 | 2009-08-17 13:31:43 -0700 | [diff] [blame] | 33 | #include "intel_drv.h" |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 34 | #include <linux/swap.h> |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 35 | #include <linux/pci.h> |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 36 | |
Eric Anholt | 28dfe52 | 2008-11-13 15:00:55 -0800 | [diff] [blame] | 37 | #define I915_GEM_GPU_DOMAINS (~(I915_GEM_DOMAIN_CPU | I915_GEM_DOMAIN_GTT)) |
| 38 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 39 | static void i915_gem_object_flush_gpu_write_domain(struct drm_gem_object *obj); |
| 40 | static void i915_gem_object_flush_gtt_write_domain(struct drm_gem_object *obj); |
| 41 | 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] | 42 | static int i915_gem_object_set_to_cpu_domain(struct drm_gem_object *obj, |
| 43 | int write); |
| 44 | static int i915_gem_object_set_cpu_read_domain_range(struct drm_gem_object *obj, |
| 45 | uint64_t offset, |
| 46 | uint64_t size); |
| 47 | 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] | 48 | static int i915_gem_object_wait_rendering(struct drm_gem_object *obj); |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 49 | static int i915_gem_object_bind_to_gtt(struct drm_gem_object *obj, |
| 50 | unsigned alignment); |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 51 | static void i915_gem_clear_fence_reg(struct drm_gem_object *obj); |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 52 | static int i915_gem_evict_something(struct drm_device *dev, int min_size); |
Chris Wilson | ab5ee57 | 2009-09-20 19:25:47 +0100 | [diff] [blame] | 53 | static int i915_gem_evict_from_inactive_list(struct drm_device *dev); |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 54 | static int i915_gem_phys_pwrite(struct drm_device *dev, struct drm_gem_object *obj, |
| 55 | struct drm_i915_gem_pwrite *args, |
| 56 | struct drm_file *file_priv); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 57 | |
Chris Wilson | 3116971 | 2009-09-14 16:50:28 +0100 | [diff] [blame] | 58 | static LIST_HEAD(shrink_list); |
| 59 | static DEFINE_SPINLOCK(shrink_list_lock); |
| 60 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 61 | int i915_gem_do_init(struct drm_device *dev, unsigned long start, |
| 62 | unsigned long end) |
| 63 | { |
| 64 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 65 | |
| 66 | if (start >= end || |
| 67 | (start & (PAGE_SIZE - 1)) != 0 || |
| 68 | (end & (PAGE_SIZE - 1)) != 0) { |
| 69 | return -EINVAL; |
| 70 | } |
| 71 | |
| 72 | drm_mm_init(&dev_priv->mm.gtt_space, start, |
| 73 | end - start); |
| 74 | |
| 75 | dev->gtt_total = (uint32_t) (end - start); |
| 76 | |
| 77 | return 0; |
| 78 | } |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 79 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 80 | int |
| 81 | i915_gem_init_ioctl(struct drm_device *dev, void *data, |
| 82 | struct drm_file *file_priv) |
| 83 | { |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 84 | struct drm_i915_gem_init *args = data; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 85 | int ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 86 | |
| 87 | mutex_lock(&dev->struct_mutex); |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 88 | ret = i915_gem_do_init(dev, args->gtt_start, args->gtt_end); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 89 | mutex_unlock(&dev->struct_mutex); |
| 90 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 91 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 92 | } |
| 93 | |
Eric Anholt | 5a125c3 | 2008-10-22 21:40:13 -0700 | [diff] [blame] | 94 | int |
| 95 | i915_gem_get_aperture_ioctl(struct drm_device *dev, void *data, |
| 96 | struct drm_file *file_priv) |
| 97 | { |
Eric Anholt | 5a125c3 | 2008-10-22 21:40:13 -0700 | [diff] [blame] | 98 | struct drm_i915_gem_get_aperture *args = data; |
Eric Anholt | 5a125c3 | 2008-10-22 21:40:13 -0700 | [diff] [blame] | 99 | |
| 100 | if (!(dev->driver->driver_features & DRIVER_GEM)) |
| 101 | return -ENODEV; |
| 102 | |
| 103 | args->aper_size = dev->gtt_total; |
Keith Packard | 2678d9d | 2008-11-20 22:54:54 -0800 | [diff] [blame] | 104 | args->aper_available_size = (args->aper_size - |
| 105 | atomic_read(&dev->pin_memory)); |
Eric Anholt | 5a125c3 | 2008-10-22 21:40:13 -0700 | [diff] [blame] | 106 | |
| 107 | return 0; |
| 108 | } |
| 109 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 110 | |
| 111 | /** |
| 112 | * Creates a new mm object and returns a handle to it. |
| 113 | */ |
| 114 | int |
| 115 | i915_gem_create_ioctl(struct drm_device *dev, void *data, |
| 116 | struct drm_file *file_priv) |
| 117 | { |
| 118 | struct drm_i915_gem_create *args = data; |
| 119 | struct drm_gem_object *obj; |
Pekka Paalanen | a1a2d1d | 2009-08-23 12:40:55 +0300 | [diff] [blame] | 120 | int ret; |
| 121 | u32 handle; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 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 | |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 143 | static inline int |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 144 | fast_shmem_read(struct page **pages, |
| 145 | loff_t page_base, int page_offset, |
| 146 | char __user *data, |
| 147 | int length) |
| 148 | { |
| 149 | char __iomem *vaddr; |
Florian Mickler | 2bc43b5 | 2009-04-06 22:55:41 +0200 | [diff] [blame] | 150 | int unwritten; |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 151 | |
| 152 | vaddr = kmap_atomic(pages[page_base >> PAGE_SHIFT], KM_USER0); |
| 153 | if (vaddr == NULL) |
| 154 | return -ENOMEM; |
Florian Mickler | 2bc43b5 | 2009-04-06 22:55:41 +0200 | [diff] [blame] | 155 | unwritten = __copy_to_user_inatomic(data, vaddr + page_offset, length); |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 156 | kunmap_atomic(vaddr, KM_USER0); |
| 157 | |
Florian Mickler | 2bc43b5 | 2009-04-06 22:55:41 +0200 | [diff] [blame] | 158 | if (unwritten) |
| 159 | return -EFAULT; |
| 160 | |
| 161 | return 0; |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 162 | } |
| 163 | |
Eric Anholt | 280b713 | 2009-03-12 16:56:27 -0700 | [diff] [blame] | 164 | static int i915_gem_object_needs_bit17_swizzle(struct drm_gem_object *obj) |
| 165 | { |
| 166 | drm_i915_private_t *dev_priv = obj->dev->dev_private; |
| 167 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 168 | |
| 169 | return dev_priv->mm.bit_6_swizzle_x == I915_BIT_6_SWIZZLE_9_10_17 && |
| 170 | obj_priv->tiling_mode != I915_TILING_NONE; |
| 171 | } |
| 172 | |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 173 | static inline int |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 174 | slow_shmem_copy(struct page *dst_page, |
| 175 | int dst_offset, |
| 176 | struct page *src_page, |
| 177 | int src_offset, |
| 178 | int length) |
| 179 | { |
| 180 | char *dst_vaddr, *src_vaddr; |
| 181 | |
| 182 | dst_vaddr = kmap_atomic(dst_page, KM_USER0); |
| 183 | if (dst_vaddr == NULL) |
| 184 | return -ENOMEM; |
| 185 | |
| 186 | src_vaddr = kmap_atomic(src_page, KM_USER1); |
| 187 | if (src_vaddr == NULL) { |
| 188 | kunmap_atomic(dst_vaddr, KM_USER0); |
| 189 | return -ENOMEM; |
| 190 | } |
| 191 | |
| 192 | memcpy(dst_vaddr + dst_offset, src_vaddr + src_offset, length); |
| 193 | |
| 194 | kunmap_atomic(src_vaddr, KM_USER1); |
| 195 | kunmap_atomic(dst_vaddr, KM_USER0); |
| 196 | |
| 197 | return 0; |
| 198 | } |
| 199 | |
Eric Anholt | 280b713 | 2009-03-12 16:56:27 -0700 | [diff] [blame] | 200 | static inline int |
| 201 | slow_shmem_bit17_copy(struct page *gpu_page, |
| 202 | int gpu_offset, |
| 203 | struct page *cpu_page, |
| 204 | int cpu_offset, |
| 205 | int length, |
| 206 | int is_read) |
| 207 | { |
| 208 | char *gpu_vaddr, *cpu_vaddr; |
| 209 | |
| 210 | /* Use the unswizzled path if this page isn't affected. */ |
| 211 | if ((page_to_phys(gpu_page) & (1 << 17)) == 0) { |
| 212 | if (is_read) |
| 213 | return slow_shmem_copy(cpu_page, cpu_offset, |
| 214 | gpu_page, gpu_offset, length); |
| 215 | else |
| 216 | return slow_shmem_copy(gpu_page, gpu_offset, |
| 217 | cpu_page, cpu_offset, length); |
| 218 | } |
| 219 | |
| 220 | gpu_vaddr = kmap_atomic(gpu_page, KM_USER0); |
| 221 | if (gpu_vaddr == NULL) |
| 222 | return -ENOMEM; |
| 223 | |
| 224 | cpu_vaddr = kmap_atomic(cpu_page, KM_USER1); |
| 225 | if (cpu_vaddr == NULL) { |
| 226 | kunmap_atomic(gpu_vaddr, KM_USER0); |
| 227 | return -ENOMEM; |
| 228 | } |
| 229 | |
| 230 | /* Copy the data, XORing A6 with A17 (1). The user already knows he's |
| 231 | * XORing with the other bits (A9 for Y, A9 and A10 for X) |
| 232 | */ |
| 233 | while (length > 0) { |
| 234 | int cacheline_end = ALIGN(gpu_offset + 1, 64); |
| 235 | int this_length = min(cacheline_end - gpu_offset, length); |
| 236 | int swizzled_gpu_offset = gpu_offset ^ 64; |
| 237 | |
| 238 | if (is_read) { |
| 239 | memcpy(cpu_vaddr + cpu_offset, |
| 240 | gpu_vaddr + swizzled_gpu_offset, |
| 241 | this_length); |
| 242 | } else { |
| 243 | memcpy(gpu_vaddr + swizzled_gpu_offset, |
| 244 | cpu_vaddr + cpu_offset, |
| 245 | this_length); |
| 246 | } |
| 247 | cpu_offset += this_length; |
| 248 | gpu_offset += this_length; |
| 249 | length -= this_length; |
| 250 | } |
| 251 | |
| 252 | kunmap_atomic(cpu_vaddr, KM_USER1); |
| 253 | kunmap_atomic(gpu_vaddr, KM_USER0); |
| 254 | |
| 255 | return 0; |
| 256 | } |
| 257 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 258 | /** |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 259 | * This is the fast shmem pread path, which attempts to copy_from_user directly |
| 260 | * from the backing pages of the object to the user's address space. On a |
| 261 | * fault, it fails so we can fall back to i915_gem_shmem_pwrite_slow(). |
| 262 | */ |
| 263 | static int |
| 264 | i915_gem_shmem_pread_fast(struct drm_device *dev, struct drm_gem_object *obj, |
| 265 | struct drm_i915_gem_pread *args, |
| 266 | struct drm_file *file_priv) |
| 267 | { |
| 268 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 269 | ssize_t remain; |
| 270 | loff_t offset, page_base; |
| 271 | char __user *user_data; |
| 272 | int page_offset, page_length; |
| 273 | int ret; |
| 274 | |
| 275 | user_data = (char __user *) (uintptr_t) args->data_ptr; |
| 276 | remain = args->size; |
| 277 | |
| 278 | mutex_lock(&dev->struct_mutex); |
| 279 | |
| 280 | ret = i915_gem_object_get_pages(obj); |
| 281 | if (ret != 0) |
| 282 | goto fail_unlock; |
| 283 | |
| 284 | ret = i915_gem_object_set_cpu_read_domain_range(obj, args->offset, |
| 285 | args->size); |
| 286 | if (ret != 0) |
| 287 | goto fail_put_pages; |
| 288 | |
| 289 | obj_priv = obj->driver_private; |
| 290 | offset = args->offset; |
| 291 | |
| 292 | while (remain > 0) { |
| 293 | /* Operation in this page |
| 294 | * |
| 295 | * page_base = page offset within aperture |
| 296 | * page_offset = offset within page |
| 297 | * page_length = bytes to copy for this page |
| 298 | */ |
| 299 | page_base = (offset & ~(PAGE_SIZE-1)); |
| 300 | page_offset = offset & (PAGE_SIZE-1); |
| 301 | page_length = remain; |
| 302 | if ((page_offset + remain) > PAGE_SIZE) |
| 303 | page_length = PAGE_SIZE - page_offset; |
| 304 | |
| 305 | ret = fast_shmem_read(obj_priv->pages, |
| 306 | page_base, page_offset, |
| 307 | user_data, page_length); |
| 308 | if (ret) |
| 309 | goto fail_put_pages; |
| 310 | |
| 311 | remain -= page_length; |
| 312 | user_data += page_length; |
| 313 | offset += page_length; |
| 314 | } |
| 315 | |
| 316 | fail_put_pages: |
| 317 | i915_gem_object_put_pages(obj); |
| 318 | fail_unlock: |
| 319 | mutex_unlock(&dev->struct_mutex); |
| 320 | |
| 321 | return ret; |
| 322 | } |
| 323 | |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 324 | static inline gfp_t |
| 325 | i915_gem_object_get_page_gfp_mask (struct drm_gem_object *obj) |
| 326 | { |
| 327 | return mapping_gfp_mask(obj->filp->f_path.dentry->d_inode->i_mapping); |
| 328 | } |
| 329 | |
| 330 | static inline void |
| 331 | i915_gem_object_set_page_gfp_mask (struct drm_gem_object *obj, gfp_t gfp) |
| 332 | { |
| 333 | mapping_set_gfp_mask(obj->filp->f_path.dentry->d_inode->i_mapping, gfp); |
| 334 | } |
| 335 | |
| 336 | static int |
| 337 | i915_gem_object_get_pages_or_evict(struct drm_gem_object *obj) |
| 338 | { |
| 339 | int ret; |
| 340 | |
| 341 | ret = i915_gem_object_get_pages(obj); |
| 342 | |
| 343 | /* If we've insufficient memory to map in the pages, attempt |
| 344 | * to make some space by throwing out some old buffers. |
| 345 | */ |
| 346 | if (ret == -ENOMEM) { |
| 347 | struct drm_device *dev = obj->dev; |
| 348 | gfp_t gfp; |
| 349 | |
| 350 | ret = i915_gem_evict_something(dev, obj->size); |
| 351 | if (ret) |
| 352 | return ret; |
| 353 | |
| 354 | gfp = i915_gem_object_get_page_gfp_mask(obj); |
| 355 | i915_gem_object_set_page_gfp_mask(obj, gfp & ~__GFP_NORETRY); |
| 356 | ret = i915_gem_object_get_pages(obj); |
| 357 | i915_gem_object_set_page_gfp_mask (obj, gfp); |
| 358 | } |
| 359 | |
| 360 | return ret; |
| 361 | } |
| 362 | |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 363 | /** |
| 364 | * This is the fallback shmem pread path, which allocates temporary storage |
| 365 | * in kernel space to copy_to_user into outside of the struct_mutex, so we |
| 366 | * can copy out of the object's backing pages while holding the struct mutex |
| 367 | * and not take page faults. |
| 368 | */ |
| 369 | static int |
| 370 | i915_gem_shmem_pread_slow(struct drm_device *dev, struct drm_gem_object *obj, |
| 371 | struct drm_i915_gem_pread *args, |
| 372 | struct drm_file *file_priv) |
| 373 | { |
| 374 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 375 | struct mm_struct *mm = current->mm; |
| 376 | struct page **user_pages; |
| 377 | ssize_t remain; |
| 378 | loff_t offset, pinned_pages, i; |
| 379 | loff_t first_data_page, last_data_page, num_pages; |
| 380 | int shmem_page_index, shmem_page_offset; |
| 381 | int data_page_index, data_page_offset; |
| 382 | int page_length; |
| 383 | int ret; |
| 384 | uint64_t data_ptr = args->data_ptr; |
Eric Anholt | 280b713 | 2009-03-12 16:56:27 -0700 | [diff] [blame] | 385 | int do_bit17_swizzling; |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 386 | |
| 387 | remain = args->size; |
| 388 | |
| 389 | /* Pin the user pages containing the data. We can't fault while |
| 390 | * holding the struct mutex, yet we want to hold it while |
| 391 | * dereferencing the user data. |
| 392 | */ |
| 393 | first_data_page = data_ptr / PAGE_SIZE; |
| 394 | last_data_page = (data_ptr + args->size - 1) / PAGE_SIZE; |
| 395 | num_pages = last_data_page - first_data_page + 1; |
| 396 | |
Jesse Barnes | 8e7d2b2 | 2009-05-08 16:13:25 -0700 | [diff] [blame] | 397 | user_pages = drm_calloc_large(num_pages, sizeof(struct page *)); |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 398 | if (user_pages == NULL) |
| 399 | return -ENOMEM; |
| 400 | |
| 401 | down_read(&mm->mmap_sem); |
| 402 | pinned_pages = get_user_pages(current, mm, (uintptr_t)args->data_ptr, |
Eric Anholt | e5e9ecd | 2009-04-07 16:01:22 -0700 | [diff] [blame] | 403 | num_pages, 1, 0, user_pages, NULL); |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 404 | up_read(&mm->mmap_sem); |
| 405 | if (pinned_pages < num_pages) { |
| 406 | ret = -EFAULT; |
| 407 | goto fail_put_user_pages; |
| 408 | } |
| 409 | |
Eric Anholt | 280b713 | 2009-03-12 16:56:27 -0700 | [diff] [blame] | 410 | do_bit17_swizzling = i915_gem_object_needs_bit17_swizzle(obj); |
| 411 | |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 412 | mutex_lock(&dev->struct_mutex); |
| 413 | |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 414 | ret = i915_gem_object_get_pages_or_evict(obj); |
| 415 | if (ret) |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 416 | goto fail_unlock; |
| 417 | |
| 418 | ret = i915_gem_object_set_cpu_read_domain_range(obj, args->offset, |
| 419 | args->size); |
| 420 | if (ret != 0) |
| 421 | goto fail_put_pages; |
| 422 | |
| 423 | obj_priv = obj->driver_private; |
| 424 | offset = args->offset; |
| 425 | |
| 426 | while (remain > 0) { |
| 427 | /* Operation in this page |
| 428 | * |
| 429 | * shmem_page_index = page number within shmem file |
| 430 | * shmem_page_offset = offset within page in shmem file |
| 431 | * data_page_index = page number in get_user_pages return |
| 432 | * data_page_offset = offset with data_page_index page. |
| 433 | * page_length = bytes to copy for this page |
| 434 | */ |
| 435 | shmem_page_index = offset / PAGE_SIZE; |
| 436 | shmem_page_offset = offset & ~PAGE_MASK; |
| 437 | data_page_index = data_ptr / PAGE_SIZE - first_data_page; |
| 438 | data_page_offset = data_ptr & ~PAGE_MASK; |
| 439 | |
| 440 | page_length = remain; |
| 441 | if ((shmem_page_offset + page_length) > PAGE_SIZE) |
| 442 | page_length = PAGE_SIZE - shmem_page_offset; |
| 443 | if ((data_page_offset + page_length) > PAGE_SIZE) |
| 444 | page_length = PAGE_SIZE - data_page_offset; |
| 445 | |
Eric Anholt | 280b713 | 2009-03-12 16:56:27 -0700 | [diff] [blame] | 446 | if (do_bit17_swizzling) { |
| 447 | ret = slow_shmem_bit17_copy(obj_priv->pages[shmem_page_index], |
| 448 | shmem_page_offset, |
| 449 | user_pages[data_page_index], |
| 450 | data_page_offset, |
| 451 | page_length, |
| 452 | 1); |
| 453 | } else { |
| 454 | ret = slow_shmem_copy(user_pages[data_page_index], |
| 455 | data_page_offset, |
| 456 | obj_priv->pages[shmem_page_index], |
| 457 | shmem_page_offset, |
| 458 | page_length); |
| 459 | } |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 460 | if (ret) |
| 461 | goto fail_put_pages; |
| 462 | |
| 463 | remain -= page_length; |
| 464 | data_ptr += page_length; |
| 465 | offset += page_length; |
| 466 | } |
| 467 | |
| 468 | fail_put_pages: |
| 469 | i915_gem_object_put_pages(obj); |
| 470 | fail_unlock: |
| 471 | mutex_unlock(&dev->struct_mutex); |
| 472 | fail_put_user_pages: |
| 473 | for (i = 0; i < pinned_pages; i++) { |
| 474 | SetPageDirty(user_pages[i]); |
| 475 | page_cache_release(user_pages[i]); |
| 476 | } |
Jesse Barnes | 8e7d2b2 | 2009-05-08 16:13:25 -0700 | [diff] [blame] | 477 | drm_free_large(user_pages); |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 478 | |
| 479 | return ret; |
| 480 | } |
| 481 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 482 | /** |
| 483 | * Reads data from the object referenced by handle. |
| 484 | * |
| 485 | * On error, the contents of *data are undefined. |
| 486 | */ |
| 487 | int |
| 488 | i915_gem_pread_ioctl(struct drm_device *dev, void *data, |
| 489 | struct drm_file *file_priv) |
| 490 | { |
| 491 | struct drm_i915_gem_pread *args = data; |
| 492 | struct drm_gem_object *obj; |
| 493 | struct drm_i915_gem_object *obj_priv; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 494 | int ret; |
| 495 | |
| 496 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
| 497 | if (obj == NULL) |
| 498 | return -EBADF; |
| 499 | obj_priv = obj->driver_private; |
| 500 | |
| 501 | /* Bounds check source. |
| 502 | * |
| 503 | * XXX: This could use review for overflow issues... |
| 504 | */ |
| 505 | if (args->offset > obj->size || args->size > obj->size || |
| 506 | args->offset + args->size > obj->size) { |
| 507 | drm_gem_object_unreference(obj); |
| 508 | return -EINVAL; |
| 509 | } |
| 510 | |
Eric Anholt | 280b713 | 2009-03-12 16:56:27 -0700 | [diff] [blame] | 511 | if (i915_gem_object_needs_bit17_swizzle(obj)) { |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 512 | ret = i915_gem_shmem_pread_slow(dev, obj, args, file_priv); |
Eric Anholt | 280b713 | 2009-03-12 16:56:27 -0700 | [diff] [blame] | 513 | } else { |
| 514 | ret = i915_gem_shmem_pread_fast(dev, obj, args, file_priv); |
| 515 | if (ret != 0) |
| 516 | ret = i915_gem_shmem_pread_slow(dev, obj, args, |
| 517 | file_priv); |
| 518 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 519 | |
| 520 | drm_gem_object_unreference(obj); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 521 | |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 522 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 523 | } |
| 524 | |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 525 | /* This is the fast write path which cannot handle |
| 526 | * page faults in the source data |
Linus Torvalds | 9b7530cc | 2008-10-20 14:16:43 -0700 | [diff] [blame] | 527 | */ |
Linus Torvalds | 9b7530cc | 2008-10-20 14:16:43 -0700 | [diff] [blame] | 528 | |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 529 | static inline int |
| 530 | fast_user_write(struct io_mapping *mapping, |
| 531 | loff_t page_base, int page_offset, |
| 532 | char __user *user_data, |
| 533 | int length) |
| 534 | { |
| 535 | char *vaddr_atomic; |
| 536 | unsigned long unwritten; |
| 537 | |
| 538 | vaddr_atomic = io_mapping_map_atomic_wc(mapping, page_base); |
| 539 | unwritten = __copy_from_user_inatomic_nocache(vaddr_atomic + page_offset, |
| 540 | user_data, length); |
| 541 | io_mapping_unmap_atomic(vaddr_atomic); |
| 542 | if (unwritten) |
| 543 | return -EFAULT; |
Linus Torvalds | 9b7530cc | 2008-10-20 14:16:43 -0700 | [diff] [blame] | 544 | return 0; |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 545 | } |
| 546 | |
| 547 | /* Here's the write path which can sleep for |
| 548 | * page faults |
| 549 | */ |
| 550 | |
| 551 | static inline int |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 552 | slow_kernel_write(struct io_mapping *mapping, |
| 553 | loff_t gtt_base, int gtt_offset, |
| 554 | struct page *user_page, int user_offset, |
| 555 | int length) |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 556 | { |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 557 | char *src_vaddr, *dst_vaddr; |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 558 | unsigned long unwritten; |
| 559 | |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 560 | dst_vaddr = io_mapping_map_atomic_wc(mapping, gtt_base); |
| 561 | src_vaddr = kmap_atomic(user_page, KM_USER1); |
| 562 | unwritten = __copy_from_user_inatomic_nocache(dst_vaddr + gtt_offset, |
| 563 | src_vaddr + user_offset, |
| 564 | length); |
| 565 | kunmap_atomic(src_vaddr, KM_USER1); |
| 566 | io_mapping_unmap_atomic(dst_vaddr); |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 567 | if (unwritten) |
| 568 | return -EFAULT; |
| 569 | return 0; |
Linus Torvalds | 9b7530cc | 2008-10-20 14:16:43 -0700 | [diff] [blame] | 570 | } |
| 571 | |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 572 | static inline int |
| 573 | fast_shmem_write(struct page **pages, |
| 574 | loff_t page_base, int page_offset, |
| 575 | char __user *data, |
| 576 | int length) |
| 577 | { |
| 578 | char __iomem *vaddr; |
Dave Airlie | d008877 | 2009-03-28 20:29:48 -0400 | [diff] [blame] | 579 | unsigned long unwritten; |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 580 | |
| 581 | vaddr = kmap_atomic(pages[page_base >> PAGE_SHIFT], KM_USER0); |
| 582 | if (vaddr == NULL) |
| 583 | return -ENOMEM; |
Dave Airlie | d008877 | 2009-03-28 20:29:48 -0400 | [diff] [blame] | 584 | unwritten = __copy_from_user_inatomic(vaddr + page_offset, data, length); |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 585 | kunmap_atomic(vaddr, KM_USER0); |
| 586 | |
Dave Airlie | d008877 | 2009-03-28 20:29:48 -0400 | [diff] [blame] | 587 | if (unwritten) |
| 588 | return -EFAULT; |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 589 | return 0; |
| 590 | } |
| 591 | |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 592 | /** |
| 593 | * This is the fast pwrite path, where we copy the data directly from the |
| 594 | * user into the GTT, uncached. |
| 595 | */ |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 596 | static int |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 597 | i915_gem_gtt_pwrite_fast(struct drm_device *dev, struct drm_gem_object *obj, |
| 598 | struct drm_i915_gem_pwrite *args, |
| 599 | struct drm_file *file_priv) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 600 | { |
| 601 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 602 | drm_i915_private_t *dev_priv = dev->dev_private; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 603 | ssize_t remain; |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 604 | loff_t offset, page_base; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 605 | char __user *user_data; |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 606 | int page_offset, page_length; |
| 607 | int ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 608 | |
| 609 | user_data = (char __user *) (uintptr_t) args->data_ptr; |
| 610 | remain = args->size; |
| 611 | if (!access_ok(VERIFY_READ, user_data, remain)) |
| 612 | return -EFAULT; |
| 613 | |
| 614 | |
| 615 | mutex_lock(&dev->struct_mutex); |
| 616 | ret = i915_gem_object_pin(obj, 0); |
| 617 | if (ret) { |
| 618 | mutex_unlock(&dev->struct_mutex); |
| 619 | return ret; |
| 620 | } |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 621 | ret = i915_gem_object_set_to_gtt_domain(obj, 1); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 622 | if (ret) |
| 623 | goto fail; |
| 624 | |
| 625 | obj_priv = obj->driver_private; |
| 626 | offset = obj_priv->gtt_offset + args->offset; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 627 | |
| 628 | while (remain > 0) { |
| 629 | /* Operation in this page |
| 630 | * |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 631 | * page_base = page offset within aperture |
| 632 | * page_offset = offset within page |
| 633 | * page_length = bytes to copy for this page |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 634 | */ |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 635 | page_base = (offset & ~(PAGE_SIZE-1)); |
| 636 | page_offset = offset & (PAGE_SIZE-1); |
| 637 | page_length = remain; |
| 638 | if ((page_offset + remain) > PAGE_SIZE) |
| 639 | page_length = PAGE_SIZE - page_offset; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 640 | |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 641 | ret = fast_user_write (dev_priv->mm.gtt_mapping, page_base, |
| 642 | page_offset, user_data, page_length); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 643 | |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 644 | /* If we get a fault while copying data, then (presumably) our |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 645 | * source page isn't available. Return the error and we'll |
| 646 | * retry in the slow path. |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 647 | */ |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 648 | if (ret) |
| 649 | goto fail; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 650 | |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 651 | remain -= page_length; |
| 652 | user_data += page_length; |
| 653 | offset += page_length; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 654 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 655 | |
| 656 | fail: |
| 657 | i915_gem_object_unpin(obj); |
| 658 | mutex_unlock(&dev->struct_mutex); |
| 659 | |
| 660 | return ret; |
| 661 | } |
| 662 | |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 663 | /** |
| 664 | * This is the fallback GTT pwrite path, which uses get_user_pages to pin |
| 665 | * the memory and maps it using kmap_atomic for copying. |
| 666 | * |
| 667 | * This code resulted in x11perf -rgb10text consuming about 10% more CPU |
| 668 | * than using i915_gem_gtt_pwrite_fast on a G45 (32-bit). |
| 669 | */ |
Eric Anholt | 3043c60 | 2008-10-02 12:24:47 -0700 | [diff] [blame] | 670 | static int |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 671 | i915_gem_gtt_pwrite_slow(struct drm_device *dev, struct drm_gem_object *obj, |
| 672 | struct drm_i915_gem_pwrite *args, |
| 673 | struct drm_file *file_priv) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 674 | { |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 675 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 676 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 677 | ssize_t remain; |
| 678 | loff_t gtt_page_base, offset; |
| 679 | loff_t first_data_page, last_data_page, num_pages; |
| 680 | loff_t pinned_pages, i; |
| 681 | struct page **user_pages; |
| 682 | struct mm_struct *mm = current->mm; |
| 683 | int gtt_page_offset, data_page_offset, data_page_index, page_length; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 684 | int ret; |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 685 | uint64_t data_ptr = args->data_ptr; |
| 686 | |
| 687 | remain = args->size; |
| 688 | |
| 689 | /* Pin the user pages containing the data. We can't fault while |
| 690 | * holding the struct mutex, and all of the pwrite implementations |
| 691 | * want to hold it while dereferencing the user data. |
| 692 | */ |
| 693 | first_data_page = data_ptr / PAGE_SIZE; |
| 694 | last_data_page = (data_ptr + args->size - 1) / PAGE_SIZE; |
| 695 | num_pages = last_data_page - first_data_page + 1; |
| 696 | |
Jesse Barnes | 8e7d2b2 | 2009-05-08 16:13:25 -0700 | [diff] [blame] | 697 | user_pages = drm_calloc_large(num_pages, sizeof(struct page *)); |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 698 | if (user_pages == NULL) |
| 699 | return -ENOMEM; |
| 700 | |
| 701 | down_read(&mm->mmap_sem); |
| 702 | pinned_pages = get_user_pages(current, mm, (uintptr_t)args->data_ptr, |
| 703 | num_pages, 0, 0, user_pages, NULL); |
| 704 | up_read(&mm->mmap_sem); |
| 705 | if (pinned_pages < num_pages) { |
| 706 | ret = -EFAULT; |
| 707 | goto out_unpin_pages; |
| 708 | } |
| 709 | |
| 710 | mutex_lock(&dev->struct_mutex); |
| 711 | ret = i915_gem_object_pin(obj, 0); |
| 712 | if (ret) |
| 713 | goto out_unlock; |
| 714 | |
| 715 | ret = i915_gem_object_set_to_gtt_domain(obj, 1); |
| 716 | if (ret) |
| 717 | goto out_unpin_object; |
| 718 | |
| 719 | obj_priv = obj->driver_private; |
| 720 | offset = obj_priv->gtt_offset + args->offset; |
| 721 | |
| 722 | while (remain > 0) { |
| 723 | /* Operation in this page |
| 724 | * |
| 725 | * gtt_page_base = page offset within aperture |
| 726 | * gtt_page_offset = offset within page in aperture |
| 727 | * data_page_index = page number in get_user_pages return |
| 728 | * data_page_offset = offset with data_page_index page. |
| 729 | * page_length = bytes to copy for this page |
| 730 | */ |
| 731 | gtt_page_base = offset & PAGE_MASK; |
| 732 | gtt_page_offset = offset & ~PAGE_MASK; |
| 733 | data_page_index = data_ptr / PAGE_SIZE - first_data_page; |
| 734 | data_page_offset = data_ptr & ~PAGE_MASK; |
| 735 | |
| 736 | page_length = remain; |
| 737 | if ((gtt_page_offset + page_length) > PAGE_SIZE) |
| 738 | page_length = PAGE_SIZE - gtt_page_offset; |
| 739 | if ((data_page_offset + page_length) > PAGE_SIZE) |
| 740 | page_length = PAGE_SIZE - data_page_offset; |
| 741 | |
| 742 | ret = slow_kernel_write(dev_priv->mm.gtt_mapping, |
| 743 | gtt_page_base, gtt_page_offset, |
| 744 | user_pages[data_page_index], |
| 745 | data_page_offset, |
| 746 | page_length); |
| 747 | |
| 748 | /* If we get a fault while copying data, then (presumably) our |
| 749 | * source page isn't available. Return the error and we'll |
| 750 | * retry in the slow path. |
| 751 | */ |
| 752 | if (ret) |
| 753 | goto out_unpin_object; |
| 754 | |
| 755 | remain -= page_length; |
| 756 | offset += page_length; |
| 757 | data_ptr += page_length; |
| 758 | } |
| 759 | |
| 760 | out_unpin_object: |
| 761 | i915_gem_object_unpin(obj); |
| 762 | out_unlock: |
| 763 | mutex_unlock(&dev->struct_mutex); |
| 764 | out_unpin_pages: |
| 765 | for (i = 0; i < pinned_pages; i++) |
| 766 | page_cache_release(user_pages[i]); |
Jesse Barnes | 8e7d2b2 | 2009-05-08 16:13:25 -0700 | [diff] [blame] | 767 | drm_free_large(user_pages); |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 768 | |
| 769 | return ret; |
| 770 | } |
| 771 | |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 772 | /** |
| 773 | * This is the fast shmem pwrite path, which attempts to directly |
| 774 | * copy_from_user into the kmapped pages backing the object. |
| 775 | */ |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 776 | static int |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 777 | i915_gem_shmem_pwrite_fast(struct drm_device *dev, struct drm_gem_object *obj, |
| 778 | struct drm_i915_gem_pwrite *args, |
| 779 | struct drm_file *file_priv) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 780 | { |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 781 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 782 | ssize_t remain; |
| 783 | loff_t offset, page_base; |
| 784 | char __user *user_data; |
| 785 | int page_offset, page_length; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 786 | int ret; |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 787 | |
| 788 | user_data = (char __user *) (uintptr_t) args->data_ptr; |
| 789 | remain = args->size; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 790 | |
| 791 | mutex_lock(&dev->struct_mutex); |
| 792 | |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 793 | ret = i915_gem_object_get_pages(obj); |
| 794 | if (ret != 0) |
| 795 | goto fail_unlock; |
| 796 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 797 | ret = i915_gem_object_set_to_cpu_domain(obj, 1); |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 798 | if (ret != 0) |
| 799 | goto fail_put_pages; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 800 | |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 801 | obj_priv = obj->driver_private; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 802 | offset = args->offset; |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 803 | obj_priv->dirty = 1; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 804 | |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 805 | while (remain > 0) { |
| 806 | /* Operation in this page |
| 807 | * |
| 808 | * page_base = page offset within aperture |
| 809 | * page_offset = offset within page |
| 810 | * page_length = bytes to copy for this page |
| 811 | */ |
| 812 | page_base = (offset & ~(PAGE_SIZE-1)); |
| 813 | page_offset = offset & (PAGE_SIZE-1); |
| 814 | page_length = remain; |
| 815 | if ((page_offset + remain) > PAGE_SIZE) |
| 816 | page_length = PAGE_SIZE - page_offset; |
| 817 | |
| 818 | ret = fast_shmem_write(obj_priv->pages, |
| 819 | page_base, page_offset, |
| 820 | user_data, page_length); |
| 821 | if (ret) |
| 822 | goto fail_put_pages; |
| 823 | |
| 824 | remain -= page_length; |
| 825 | user_data += page_length; |
| 826 | offset += page_length; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 827 | } |
| 828 | |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 829 | fail_put_pages: |
| 830 | i915_gem_object_put_pages(obj); |
| 831 | fail_unlock: |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 832 | mutex_unlock(&dev->struct_mutex); |
| 833 | |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 834 | return ret; |
| 835 | } |
| 836 | |
| 837 | /** |
| 838 | * This is the fallback shmem pwrite path, which uses get_user_pages to pin |
| 839 | * the memory and maps it using kmap_atomic for copying. |
| 840 | * |
| 841 | * This avoids taking mmap_sem for faulting on the user's address while the |
| 842 | * struct_mutex is held. |
| 843 | */ |
| 844 | static int |
| 845 | i915_gem_shmem_pwrite_slow(struct drm_device *dev, struct drm_gem_object *obj, |
| 846 | struct drm_i915_gem_pwrite *args, |
| 847 | struct drm_file *file_priv) |
| 848 | { |
| 849 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 850 | struct mm_struct *mm = current->mm; |
| 851 | struct page **user_pages; |
| 852 | ssize_t remain; |
| 853 | loff_t offset, pinned_pages, i; |
| 854 | loff_t first_data_page, last_data_page, num_pages; |
| 855 | int shmem_page_index, shmem_page_offset; |
| 856 | int data_page_index, data_page_offset; |
| 857 | int page_length; |
| 858 | int ret; |
| 859 | uint64_t data_ptr = args->data_ptr; |
Eric Anholt | 280b713 | 2009-03-12 16:56:27 -0700 | [diff] [blame] | 860 | int do_bit17_swizzling; |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 861 | |
| 862 | remain = args->size; |
| 863 | |
| 864 | /* Pin the user pages containing the data. We can't fault while |
| 865 | * holding the struct mutex, and all of the pwrite implementations |
| 866 | * want to hold it while dereferencing the user data. |
| 867 | */ |
| 868 | first_data_page = data_ptr / PAGE_SIZE; |
| 869 | last_data_page = (data_ptr + args->size - 1) / PAGE_SIZE; |
| 870 | num_pages = last_data_page - first_data_page + 1; |
| 871 | |
Jesse Barnes | 8e7d2b2 | 2009-05-08 16:13:25 -0700 | [diff] [blame] | 872 | user_pages = drm_calloc_large(num_pages, sizeof(struct page *)); |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 873 | if (user_pages == NULL) |
| 874 | return -ENOMEM; |
| 875 | |
| 876 | down_read(&mm->mmap_sem); |
| 877 | pinned_pages = get_user_pages(current, mm, (uintptr_t)args->data_ptr, |
| 878 | num_pages, 0, 0, user_pages, NULL); |
| 879 | up_read(&mm->mmap_sem); |
| 880 | if (pinned_pages < num_pages) { |
| 881 | ret = -EFAULT; |
| 882 | goto fail_put_user_pages; |
| 883 | } |
| 884 | |
Eric Anholt | 280b713 | 2009-03-12 16:56:27 -0700 | [diff] [blame] | 885 | do_bit17_swizzling = i915_gem_object_needs_bit17_swizzle(obj); |
| 886 | |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 887 | mutex_lock(&dev->struct_mutex); |
| 888 | |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 889 | ret = i915_gem_object_get_pages_or_evict(obj); |
| 890 | if (ret) |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 891 | goto fail_unlock; |
| 892 | |
| 893 | ret = i915_gem_object_set_to_cpu_domain(obj, 1); |
| 894 | if (ret != 0) |
| 895 | goto fail_put_pages; |
| 896 | |
| 897 | obj_priv = obj->driver_private; |
| 898 | offset = args->offset; |
| 899 | obj_priv->dirty = 1; |
| 900 | |
| 901 | while (remain > 0) { |
| 902 | /* Operation in this page |
| 903 | * |
| 904 | * shmem_page_index = page number within shmem file |
| 905 | * shmem_page_offset = offset within page in shmem file |
| 906 | * data_page_index = page number in get_user_pages return |
| 907 | * data_page_offset = offset with data_page_index page. |
| 908 | * page_length = bytes to copy for this page |
| 909 | */ |
| 910 | shmem_page_index = offset / PAGE_SIZE; |
| 911 | shmem_page_offset = offset & ~PAGE_MASK; |
| 912 | data_page_index = data_ptr / PAGE_SIZE - first_data_page; |
| 913 | data_page_offset = data_ptr & ~PAGE_MASK; |
| 914 | |
| 915 | page_length = remain; |
| 916 | if ((shmem_page_offset + page_length) > PAGE_SIZE) |
| 917 | page_length = PAGE_SIZE - shmem_page_offset; |
| 918 | if ((data_page_offset + page_length) > PAGE_SIZE) |
| 919 | page_length = PAGE_SIZE - data_page_offset; |
| 920 | |
Eric Anholt | 280b713 | 2009-03-12 16:56:27 -0700 | [diff] [blame] | 921 | if (do_bit17_swizzling) { |
| 922 | ret = slow_shmem_bit17_copy(obj_priv->pages[shmem_page_index], |
| 923 | shmem_page_offset, |
| 924 | user_pages[data_page_index], |
| 925 | data_page_offset, |
| 926 | page_length, |
| 927 | 0); |
| 928 | } else { |
| 929 | ret = slow_shmem_copy(obj_priv->pages[shmem_page_index], |
| 930 | shmem_page_offset, |
| 931 | user_pages[data_page_index], |
| 932 | data_page_offset, |
| 933 | page_length); |
| 934 | } |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 935 | if (ret) |
| 936 | goto fail_put_pages; |
| 937 | |
| 938 | remain -= page_length; |
| 939 | data_ptr += page_length; |
| 940 | offset += page_length; |
| 941 | } |
| 942 | |
| 943 | fail_put_pages: |
| 944 | i915_gem_object_put_pages(obj); |
| 945 | fail_unlock: |
| 946 | mutex_unlock(&dev->struct_mutex); |
| 947 | fail_put_user_pages: |
| 948 | for (i = 0; i < pinned_pages; i++) |
| 949 | page_cache_release(user_pages[i]); |
Jesse Barnes | 8e7d2b2 | 2009-05-08 16:13:25 -0700 | [diff] [blame] | 950 | drm_free_large(user_pages); |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 951 | |
| 952 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 953 | } |
| 954 | |
| 955 | /** |
| 956 | * Writes data to the object referenced by handle. |
| 957 | * |
| 958 | * On error, the contents of the buffer that were to be modified are undefined. |
| 959 | */ |
| 960 | int |
| 961 | i915_gem_pwrite_ioctl(struct drm_device *dev, void *data, |
| 962 | struct drm_file *file_priv) |
| 963 | { |
| 964 | struct drm_i915_gem_pwrite *args = data; |
| 965 | struct drm_gem_object *obj; |
| 966 | struct drm_i915_gem_object *obj_priv; |
| 967 | int ret = 0; |
| 968 | |
| 969 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
| 970 | if (obj == NULL) |
| 971 | return -EBADF; |
| 972 | obj_priv = obj->driver_private; |
| 973 | |
| 974 | /* Bounds check destination. |
| 975 | * |
| 976 | * XXX: This could use review for overflow issues... |
| 977 | */ |
| 978 | if (args->offset > obj->size || args->size > obj->size || |
| 979 | args->offset + args->size > obj->size) { |
| 980 | drm_gem_object_unreference(obj); |
| 981 | return -EINVAL; |
| 982 | } |
| 983 | |
| 984 | /* We can only do the GTT pwrite on untiled buffers, as otherwise |
| 985 | * it would end up going through the fenced access, and we'll get |
| 986 | * different detiling behavior between reading and writing. |
| 987 | * pread/pwrite currently are reading and writing from the CPU |
| 988 | * perspective, requiring manual detiling by the client. |
| 989 | */ |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 990 | if (obj_priv->phys_obj) |
| 991 | ret = i915_gem_phys_pwrite(dev, obj, args, file_priv); |
| 992 | else if (obj_priv->tiling_mode == I915_TILING_NONE && |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 993 | dev->gtt_total != 0) { |
| 994 | ret = i915_gem_gtt_pwrite_fast(dev, obj, args, file_priv); |
| 995 | if (ret == -EFAULT) { |
| 996 | ret = i915_gem_gtt_pwrite_slow(dev, obj, args, |
| 997 | file_priv); |
| 998 | } |
Eric Anholt | 280b713 | 2009-03-12 16:56:27 -0700 | [diff] [blame] | 999 | } else if (i915_gem_object_needs_bit17_swizzle(obj)) { |
| 1000 | ret = i915_gem_shmem_pwrite_slow(dev, obj, args, file_priv); |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 1001 | } else { |
| 1002 | ret = i915_gem_shmem_pwrite_fast(dev, obj, args, file_priv); |
| 1003 | if (ret == -EFAULT) { |
| 1004 | ret = i915_gem_shmem_pwrite_slow(dev, obj, args, |
| 1005 | file_priv); |
| 1006 | } |
| 1007 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1008 | |
| 1009 | #if WATCH_PWRITE |
| 1010 | if (ret) |
| 1011 | DRM_INFO("pwrite failed %d\n", ret); |
| 1012 | #endif |
| 1013 | |
| 1014 | drm_gem_object_unreference(obj); |
| 1015 | |
| 1016 | return ret; |
| 1017 | } |
| 1018 | |
| 1019 | /** |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1020 | * Called when user space prepares to use an object with the CPU, either |
| 1021 | * through the mmap ioctl's mapping or a GTT mapping. |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1022 | */ |
| 1023 | int |
| 1024 | i915_gem_set_domain_ioctl(struct drm_device *dev, void *data, |
| 1025 | struct drm_file *file_priv) |
| 1026 | { |
Eric Anholt | a09ba7f | 2009-08-29 12:49:51 -0700 | [diff] [blame] | 1027 | struct drm_i915_private *dev_priv = dev->dev_private; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1028 | struct drm_i915_gem_set_domain *args = data; |
| 1029 | struct drm_gem_object *obj; |
Jesse Barnes | 652c393 | 2009-08-17 13:31:43 -0700 | [diff] [blame] | 1030 | struct drm_i915_gem_object *obj_priv; |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1031 | uint32_t read_domains = args->read_domains; |
| 1032 | uint32_t write_domain = args->write_domain; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1033 | int ret; |
| 1034 | |
| 1035 | if (!(dev->driver->driver_features & DRIVER_GEM)) |
| 1036 | return -ENODEV; |
| 1037 | |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1038 | /* Only handle setting domains to types used by the CPU. */ |
Chris Wilson | 21d509e | 2009-06-06 09:46:02 +0100 | [diff] [blame] | 1039 | if (write_domain & I915_GEM_GPU_DOMAINS) |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1040 | return -EINVAL; |
| 1041 | |
Chris Wilson | 21d509e | 2009-06-06 09:46:02 +0100 | [diff] [blame] | 1042 | if (read_domains & I915_GEM_GPU_DOMAINS) |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1043 | return -EINVAL; |
| 1044 | |
| 1045 | /* Having something in the write domain implies it's in the read |
| 1046 | * domain, and only that read domain. Enforce that in the request. |
| 1047 | */ |
| 1048 | if (write_domain != 0 && read_domains != write_domain) |
| 1049 | return -EINVAL; |
| 1050 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1051 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
| 1052 | if (obj == NULL) |
| 1053 | return -EBADF; |
Jesse Barnes | 652c393 | 2009-08-17 13:31:43 -0700 | [diff] [blame] | 1054 | obj_priv = obj->driver_private; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1055 | |
| 1056 | mutex_lock(&dev->struct_mutex); |
Jesse Barnes | 652c393 | 2009-08-17 13:31:43 -0700 | [diff] [blame] | 1057 | |
| 1058 | intel_mark_busy(dev, obj); |
| 1059 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1060 | #if WATCH_BUF |
Krzysztof Halasa | cfd43c0 | 2009-06-20 00:31:28 +0200 | [diff] [blame] | 1061 | DRM_INFO("set_domain_ioctl %p(%zd), %08x %08x\n", |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1062 | obj, obj->size, read_domains, write_domain); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1063 | #endif |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1064 | if (read_domains & I915_GEM_DOMAIN_GTT) { |
| 1065 | ret = i915_gem_object_set_to_gtt_domain(obj, write_domain != 0); |
Eric Anholt | 0235439 | 2008-11-26 13:58:13 -0800 | [diff] [blame] | 1066 | |
Eric Anholt | a09ba7f | 2009-08-29 12:49:51 -0700 | [diff] [blame] | 1067 | /* Update the LRU on the fence for the CPU access that's |
| 1068 | * about to occur. |
| 1069 | */ |
| 1070 | if (obj_priv->fence_reg != I915_FENCE_REG_NONE) { |
| 1071 | list_move_tail(&obj_priv->fence_list, |
| 1072 | &dev_priv->mm.fence_list); |
| 1073 | } |
| 1074 | |
Eric Anholt | 0235439 | 2008-11-26 13:58:13 -0800 | [diff] [blame] | 1075 | /* Silently promote "you're not bound, there was nothing to do" |
| 1076 | * to success, since the client was just asking us to |
| 1077 | * make sure everything was done. |
| 1078 | */ |
| 1079 | if (ret == -EINVAL) |
| 1080 | ret = 0; |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1081 | } else { |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 1082 | ret = i915_gem_object_set_to_cpu_domain(obj, write_domain != 0); |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1083 | } |
| 1084 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1085 | drm_gem_object_unreference(obj); |
| 1086 | mutex_unlock(&dev->struct_mutex); |
| 1087 | return ret; |
| 1088 | } |
| 1089 | |
| 1090 | /** |
| 1091 | * Called when user space has done writes to this buffer |
| 1092 | */ |
| 1093 | int |
| 1094 | i915_gem_sw_finish_ioctl(struct drm_device *dev, void *data, |
| 1095 | struct drm_file *file_priv) |
| 1096 | { |
| 1097 | struct drm_i915_gem_sw_finish *args = data; |
| 1098 | struct drm_gem_object *obj; |
| 1099 | struct drm_i915_gem_object *obj_priv; |
| 1100 | int ret = 0; |
| 1101 | |
| 1102 | if (!(dev->driver->driver_features & DRIVER_GEM)) |
| 1103 | return -ENODEV; |
| 1104 | |
| 1105 | mutex_lock(&dev->struct_mutex); |
| 1106 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
| 1107 | if (obj == NULL) { |
| 1108 | mutex_unlock(&dev->struct_mutex); |
| 1109 | return -EBADF; |
| 1110 | } |
| 1111 | |
| 1112 | #if WATCH_BUF |
Krzysztof Halasa | cfd43c0 | 2009-06-20 00:31:28 +0200 | [diff] [blame] | 1113 | DRM_INFO("%s: sw_finish %d (%p %zd)\n", |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1114 | __func__, args->handle, obj, obj->size); |
| 1115 | #endif |
| 1116 | obj_priv = obj->driver_private; |
| 1117 | |
| 1118 | /* Pinned buffers may be scanout, so flush the cache */ |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 1119 | if (obj_priv->pin_count) |
| 1120 | i915_gem_object_flush_cpu_write_domain(obj); |
| 1121 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1122 | drm_gem_object_unreference(obj); |
| 1123 | mutex_unlock(&dev->struct_mutex); |
| 1124 | return ret; |
| 1125 | } |
| 1126 | |
| 1127 | /** |
| 1128 | * Maps the contents of an object, returning the address it is mapped |
| 1129 | * into. |
| 1130 | * |
| 1131 | * While the mapping holds a reference on the contents of the object, it doesn't |
| 1132 | * imply a ref on the object itself. |
| 1133 | */ |
| 1134 | int |
| 1135 | i915_gem_mmap_ioctl(struct drm_device *dev, void *data, |
| 1136 | struct drm_file *file_priv) |
| 1137 | { |
| 1138 | struct drm_i915_gem_mmap *args = data; |
| 1139 | struct drm_gem_object *obj; |
| 1140 | loff_t offset; |
| 1141 | unsigned long addr; |
| 1142 | |
| 1143 | if (!(dev->driver->driver_features & DRIVER_GEM)) |
| 1144 | return -ENODEV; |
| 1145 | |
| 1146 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
| 1147 | if (obj == NULL) |
| 1148 | return -EBADF; |
| 1149 | |
| 1150 | offset = args->offset; |
| 1151 | |
| 1152 | down_write(¤t->mm->mmap_sem); |
| 1153 | addr = do_mmap(obj->filp, 0, args->size, |
| 1154 | PROT_READ | PROT_WRITE, MAP_SHARED, |
| 1155 | args->offset); |
| 1156 | up_write(¤t->mm->mmap_sem); |
| 1157 | mutex_lock(&dev->struct_mutex); |
| 1158 | drm_gem_object_unreference(obj); |
| 1159 | mutex_unlock(&dev->struct_mutex); |
| 1160 | if (IS_ERR((void *)addr)) |
| 1161 | return addr; |
| 1162 | |
| 1163 | args->addr_ptr = (uint64_t) addr; |
| 1164 | |
| 1165 | return 0; |
| 1166 | } |
| 1167 | |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1168 | /** |
| 1169 | * i915_gem_fault - fault a page into the GTT |
| 1170 | * vma: VMA in question |
| 1171 | * vmf: fault info |
| 1172 | * |
| 1173 | * The fault handler is set up by drm_gem_mmap() when a object is GTT mapped |
| 1174 | * from userspace. The fault handler takes care of binding the object to |
| 1175 | * the GTT (if needed), allocating and programming a fence register (again, |
| 1176 | * only if needed based on whether the old reg is still valid or the object |
| 1177 | * is tiled) and inserting a new PTE into the faulting process. |
| 1178 | * |
| 1179 | * Note that the faulting process may involve evicting existing objects |
| 1180 | * from the GTT and/or fence registers to make room. So performance may |
| 1181 | * suffer if the GTT working set is large or there are few fence registers |
| 1182 | * left. |
| 1183 | */ |
| 1184 | int i915_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf) |
| 1185 | { |
| 1186 | struct drm_gem_object *obj = vma->vm_private_data; |
| 1187 | struct drm_device *dev = obj->dev; |
| 1188 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1189 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 1190 | pgoff_t page_offset; |
| 1191 | unsigned long pfn; |
| 1192 | int ret = 0; |
Jesse Barnes | 0f973f2 | 2009-01-26 17:10:45 -0800 | [diff] [blame] | 1193 | bool write = !!(vmf->flags & FAULT_FLAG_WRITE); |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1194 | |
| 1195 | /* We don't use vmf->pgoff since that has the fake offset */ |
| 1196 | page_offset = ((unsigned long)vmf->virtual_address - vma->vm_start) >> |
| 1197 | PAGE_SHIFT; |
| 1198 | |
| 1199 | /* Now bind it into the GTT if needed */ |
| 1200 | mutex_lock(&dev->struct_mutex); |
| 1201 | if (!obj_priv->gtt_space) { |
Chris Wilson | e67b8ce | 2009-09-14 16:50:26 +0100 | [diff] [blame] | 1202 | ret = i915_gem_object_bind_to_gtt(obj, 0); |
Chris Wilson | c715089 | 2009-09-23 00:43:56 +0100 | [diff] [blame] | 1203 | if (ret) |
| 1204 | goto unlock; |
Kristian Høgsberg | 07f4f3e | 2009-05-27 14:37:28 -0400 | [diff] [blame] | 1205 | |
Jesse Barnes | 14b6039 | 2009-05-20 16:47:08 -0400 | [diff] [blame] | 1206 | list_add_tail(&obj_priv->list, &dev_priv->mm.inactive_list); |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1207 | |
| 1208 | ret = i915_gem_object_set_to_gtt_domain(obj, write); |
Chris Wilson | c715089 | 2009-09-23 00:43:56 +0100 | [diff] [blame] | 1209 | if (ret) |
| 1210 | goto unlock; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1211 | } |
| 1212 | |
| 1213 | /* Need a new fence register? */ |
Eric Anholt | a09ba7f | 2009-08-29 12:49:51 -0700 | [diff] [blame] | 1214 | if (obj_priv->tiling_mode != I915_TILING_NONE) { |
Chris Wilson | 8c4b8c3 | 2009-06-17 22:08:52 +0100 | [diff] [blame] | 1215 | ret = i915_gem_object_get_fence_reg(obj); |
Chris Wilson | c715089 | 2009-09-23 00:43:56 +0100 | [diff] [blame] | 1216 | if (ret) |
| 1217 | goto unlock; |
Eric Anholt | d9ddcb9 | 2009-01-27 10:33:49 -0800 | [diff] [blame] | 1218 | } |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1219 | |
| 1220 | pfn = ((dev->agp->base + obj_priv->gtt_offset) >> PAGE_SHIFT) + |
| 1221 | page_offset; |
| 1222 | |
| 1223 | /* Finally, remap it using the new GTT offset */ |
| 1224 | ret = vm_insert_pfn(vma, (unsigned long)vmf->virtual_address, pfn); |
Chris Wilson | c715089 | 2009-09-23 00:43:56 +0100 | [diff] [blame] | 1225 | unlock: |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1226 | mutex_unlock(&dev->struct_mutex); |
| 1227 | |
| 1228 | switch (ret) { |
Chris Wilson | c715089 | 2009-09-23 00:43:56 +0100 | [diff] [blame] | 1229 | case 0: |
| 1230 | case -ERESTARTSYS: |
| 1231 | return VM_FAULT_NOPAGE; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1232 | case -ENOMEM: |
| 1233 | case -EAGAIN: |
| 1234 | return VM_FAULT_OOM; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1235 | default: |
Chris Wilson | c715089 | 2009-09-23 00:43:56 +0100 | [diff] [blame] | 1236 | return VM_FAULT_SIGBUS; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1237 | } |
| 1238 | } |
| 1239 | |
| 1240 | /** |
| 1241 | * i915_gem_create_mmap_offset - create a fake mmap offset for an object |
| 1242 | * @obj: obj in question |
| 1243 | * |
| 1244 | * GEM memory mapping works by handing back to userspace a fake mmap offset |
| 1245 | * it can use in a subsequent mmap(2) call. The DRM core code then looks |
| 1246 | * up the object based on the offset and sets up the various memory mapping |
| 1247 | * structures. |
| 1248 | * |
| 1249 | * This routine allocates and attaches a fake offset for @obj. |
| 1250 | */ |
| 1251 | static int |
| 1252 | i915_gem_create_mmap_offset(struct drm_gem_object *obj) |
| 1253 | { |
| 1254 | struct drm_device *dev = obj->dev; |
| 1255 | struct drm_gem_mm *mm = dev->mm_private; |
| 1256 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 1257 | struct drm_map_list *list; |
Benjamin Herrenschmidt | f77d390 | 2009-02-02 16:55:46 +1100 | [diff] [blame] | 1258 | struct drm_local_map *map; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1259 | int ret = 0; |
| 1260 | |
| 1261 | /* Set the object up for mmap'ing */ |
| 1262 | list = &obj->map_list; |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 1263 | list->map = kzalloc(sizeof(struct drm_map_list), GFP_KERNEL); |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1264 | if (!list->map) |
| 1265 | return -ENOMEM; |
| 1266 | |
| 1267 | map = list->map; |
| 1268 | map->type = _DRM_GEM; |
| 1269 | map->size = obj->size; |
| 1270 | map->handle = obj; |
| 1271 | |
| 1272 | /* Get a DRM GEM mmap offset allocated... */ |
| 1273 | list->file_offset_node = drm_mm_search_free(&mm->offset_manager, |
| 1274 | obj->size / PAGE_SIZE, 0, 0); |
| 1275 | if (!list->file_offset_node) { |
| 1276 | DRM_ERROR("failed to allocate offset for bo %d\n", obj->name); |
| 1277 | ret = -ENOMEM; |
| 1278 | goto out_free_list; |
| 1279 | } |
| 1280 | |
| 1281 | list->file_offset_node = drm_mm_get_block(list->file_offset_node, |
| 1282 | obj->size / PAGE_SIZE, 0); |
| 1283 | if (!list->file_offset_node) { |
| 1284 | ret = -ENOMEM; |
| 1285 | goto out_free_list; |
| 1286 | } |
| 1287 | |
| 1288 | list->hash.key = list->file_offset_node->start; |
| 1289 | if (drm_ht_insert_item(&mm->offset_hash, &list->hash)) { |
| 1290 | DRM_ERROR("failed to add to map hash\n"); |
Chris Wilson | 5618ca6 | 2009-12-02 15:15:30 +0000 | [diff] [blame] | 1291 | ret = -ENOMEM; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1292 | goto out_free_mm; |
| 1293 | } |
| 1294 | |
| 1295 | /* By now we should be all set, any drm_mmap request on the offset |
| 1296 | * below will get to our mmap & fault handler */ |
| 1297 | obj_priv->mmap_offset = ((uint64_t) list->hash.key) << PAGE_SHIFT; |
| 1298 | |
| 1299 | return 0; |
| 1300 | |
| 1301 | out_free_mm: |
| 1302 | drm_mm_put_block(list->file_offset_node); |
| 1303 | out_free_list: |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 1304 | kfree(list->map); |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1305 | |
| 1306 | return ret; |
| 1307 | } |
| 1308 | |
Chris Wilson | 901782b | 2009-07-10 08:18:50 +0100 | [diff] [blame] | 1309 | /** |
| 1310 | * i915_gem_release_mmap - remove physical page mappings |
| 1311 | * @obj: obj in question |
| 1312 | * |
André Goddard Rosa | af901ca | 2009-11-14 13:09:05 -0200 | [diff] [blame] | 1313 | * Preserve the reservation of the mmapping with the DRM core code, but |
Chris Wilson | 901782b | 2009-07-10 08:18:50 +0100 | [diff] [blame] | 1314 | * relinquish ownership of the pages back to the system. |
| 1315 | * |
| 1316 | * It is vital that we remove the page mapping if we have mapped a tiled |
| 1317 | * object through the GTT and then lose the fence register due to |
| 1318 | * resource pressure. Similarly if the object has been moved out of the |
| 1319 | * aperture, than pages mapped into userspace must be revoked. Removing the |
| 1320 | * mapping will then trigger a page fault on the next user access, allowing |
| 1321 | * fixup by i915_gem_fault(). |
| 1322 | */ |
Eric Anholt | d05ca30 | 2009-07-10 13:02:26 -0700 | [diff] [blame] | 1323 | void |
Chris Wilson | 901782b | 2009-07-10 08:18:50 +0100 | [diff] [blame] | 1324 | i915_gem_release_mmap(struct drm_gem_object *obj) |
| 1325 | { |
| 1326 | struct drm_device *dev = obj->dev; |
| 1327 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 1328 | |
| 1329 | if (dev->dev_mapping) |
| 1330 | unmap_mapping_range(dev->dev_mapping, |
| 1331 | obj_priv->mmap_offset, obj->size, 1); |
| 1332 | } |
| 1333 | |
Jesse Barnes | ab00b3e | 2009-02-11 14:01:46 -0800 | [diff] [blame] | 1334 | static void |
| 1335 | i915_gem_free_mmap_offset(struct drm_gem_object *obj) |
| 1336 | { |
| 1337 | struct drm_device *dev = obj->dev; |
| 1338 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 1339 | struct drm_gem_mm *mm = dev->mm_private; |
| 1340 | struct drm_map_list *list; |
| 1341 | |
| 1342 | list = &obj->map_list; |
| 1343 | drm_ht_remove_item(&mm->offset_hash, &list->hash); |
| 1344 | |
| 1345 | if (list->file_offset_node) { |
| 1346 | drm_mm_put_block(list->file_offset_node); |
| 1347 | list->file_offset_node = NULL; |
| 1348 | } |
| 1349 | |
| 1350 | if (list->map) { |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 1351 | kfree(list->map); |
Jesse Barnes | ab00b3e | 2009-02-11 14:01:46 -0800 | [diff] [blame] | 1352 | list->map = NULL; |
| 1353 | } |
| 1354 | |
| 1355 | obj_priv->mmap_offset = 0; |
| 1356 | } |
| 1357 | |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1358 | /** |
| 1359 | * i915_gem_get_gtt_alignment - return required GTT alignment for an object |
| 1360 | * @obj: object to check |
| 1361 | * |
| 1362 | * Return the required GTT alignment for an object, taking into account |
| 1363 | * potential fence register mapping if needed. |
| 1364 | */ |
| 1365 | static uint32_t |
| 1366 | i915_gem_get_gtt_alignment(struct drm_gem_object *obj) |
| 1367 | { |
| 1368 | struct drm_device *dev = obj->dev; |
| 1369 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 1370 | int start, i; |
| 1371 | |
| 1372 | /* |
| 1373 | * Minimum alignment is 4k (GTT page size), but might be greater |
| 1374 | * if a fence register is needed for the object. |
| 1375 | */ |
| 1376 | if (IS_I965G(dev) || obj_priv->tiling_mode == I915_TILING_NONE) |
| 1377 | return 4096; |
| 1378 | |
| 1379 | /* |
| 1380 | * Previous chips need to be aligned to the size of the smallest |
| 1381 | * fence register that can contain the object. |
| 1382 | */ |
| 1383 | if (IS_I9XX(dev)) |
| 1384 | start = 1024*1024; |
| 1385 | else |
| 1386 | start = 512*1024; |
| 1387 | |
| 1388 | for (i = start; i < obj->size; i <<= 1) |
| 1389 | ; |
| 1390 | |
| 1391 | return i; |
| 1392 | } |
| 1393 | |
| 1394 | /** |
| 1395 | * i915_gem_mmap_gtt_ioctl - prepare an object for GTT mmap'ing |
| 1396 | * @dev: DRM device |
| 1397 | * @data: GTT mapping ioctl data |
| 1398 | * @file_priv: GEM object info |
| 1399 | * |
| 1400 | * Simply returns the fake offset to userspace so it can mmap it. |
| 1401 | * The mmap call will end up in drm_gem_mmap(), which will set things |
| 1402 | * up so we can get faults in the handler above. |
| 1403 | * |
| 1404 | * The fault handler will take care of binding the object into the GTT |
| 1405 | * (since it may have been evicted to make room for something), allocating |
| 1406 | * a fence register, and mapping the appropriate aperture address into |
| 1407 | * userspace. |
| 1408 | */ |
| 1409 | int |
| 1410 | i915_gem_mmap_gtt_ioctl(struct drm_device *dev, void *data, |
| 1411 | struct drm_file *file_priv) |
| 1412 | { |
| 1413 | struct drm_i915_gem_mmap_gtt *args = data; |
| 1414 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1415 | struct drm_gem_object *obj; |
| 1416 | struct drm_i915_gem_object *obj_priv; |
| 1417 | int ret; |
| 1418 | |
| 1419 | if (!(dev->driver->driver_features & DRIVER_GEM)) |
| 1420 | return -ENODEV; |
| 1421 | |
| 1422 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
| 1423 | if (obj == NULL) |
| 1424 | return -EBADF; |
| 1425 | |
| 1426 | mutex_lock(&dev->struct_mutex); |
| 1427 | |
| 1428 | obj_priv = obj->driver_private; |
| 1429 | |
Chris Wilson | ab18282 | 2009-09-22 18:46:17 +0100 | [diff] [blame] | 1430 | if (obj_priv->madv != I915_MADV_WILLNEED) { |
| 1431 | DRM_ERROR("Attempting to mmap a purgeable buffer\n"); |
| 1432 | drm_gem_object_unreference(obj); |
| 1433 | mutex_unlock(&dev->struct_mutex); |
| 1434 | return -EINVAL; |
| 1435 | } |
| 1436 | |
| 1437 | |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1438 | if (!obj_priv->mmap_offset) { |
| 1439 | ret = i915_gem_create_mmap_offset(obj); |
Chris Wilson | 13af106 | 2009-02-11 14:26:31 +0000 | [diff] [blame] | 1440 | if (ret) { |
| 1441 | drm_gem_object_unreference(obj); |
| 1442 | mutex_unlock(&dev->struct_mutex); |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1443 | return ret; |
Chris Wilson | 13af106 | 2009-02-11 14:26:31 +0000 | [diff] [blame] | 1444 | } |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1445 | } |
| 1446 | |
| 1447 | args->offset = obj_priv->mmap_offset; |
| 1448 | |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1449 | /* |
| 1450 | * Pull it into the GTT so that we have a page list (makes the |
| 1451 | * initial fault faster and any subsequent flushing possible). |
| 1452 | */ |
| 1453 | if (!obj_priv->agp_mem) { |
Chris Wilson | e67b8ce | 2009-09-14 16:50:26 +0100 | [diff] [blame] | 1454 | ret = i915_gem_object_bind_to_gtt(obj, 0); |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1455 | if (ret) { |
| 1456 | drm_gem_object_unreference(obj); |
| 1457 | mutex_unlock(&dev->struct_mutex); |
| 1458 | return ret; |
| 1459 | } |
Jesse Barnes | 14b6039 | 2009-05-20 16:47:08 -0400 | [diff] [blame] | 1460 | list_add_tail(&obj_priv->list, &dev_priv->mm.inactive_list); |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1461 | } |
| 1462 | |
| 1463 | drm_gem_object_unreference(obj); |
| 1464 | mutex_unlock(&dev->struct_mutex); |
| 1465 | |
| 1466 | return 0; |
| 1467 | } |
| 1468 | |
Ben Gamari | 6911a9b | 2009-04-02 11:24:54 -0700 | [diff] [blame] | 1469 | void |
Eric Anholt | 856fa19 | 2009-03-19 14:10:50 -0700 | [diff] [blame] | 1470 | i915_gem_object_put_pages(struct drm_gem_object *obj) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1471 | { |
| 1472 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 1473 | int page_count = obj->size / PAGE_SIZE; |
| 1474 | int i; |
| 1475 | |
Eric Anholt | 856fa19 | 2009-03-19 14:10:50 -0700 | [diff] [blame] | 1476 | BUG_ON(obj_priv->pages_refcount == 0); |
Chris Wilson | bb6baf7 | 2009-09-22 14:24:13 +0100 | [diff] [blame] | 1477 | BUG_ON(obj_priv->madv == __I915_MADV_PURGED); |
Eric Anholt | 856fa19 | 2009-03-19 14:10:50 -0700 | [diff] [blame] | 1478 | |
| 1479 | if (--obj_priv->pages_refcount != 0) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1480 | return; |
| 1481 | |
Eric Anholt | 280b713 | 2009-03-12 16:56:27 -0700 | [diff] [blame] | 1482 | if (obj_priv->tiling_mode != I915_TILING_NONE) |
| 1483 | i915_gem_object_save_bit_17_swizzle(obj); |
| 1484 | |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 1485 | if (obj_priv->madv == I915_MADV_DONTNEED) |
Chris Wilson | 13a05fd | 2009-09-20 23:03:19 +0100 | [diff] [blame] | 1486 | obj_priv->dirty = 0; |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 1487 | |
| 1488 | for (i = 0; i < page_count; i++) { |
| 1489 | if (obj_priv->pages[i] == NULL) |
| 1490 | break; |
| 1491 | |
| 1492 | if (obj_priv->dirty) |
| 1493 | set_page_dirty(obj_priv->pages[i]); |
| 1494 | |
| 1495 | if (obj_priv->madv == I915_MADV_WILLNEED) |
Eric Anholt | 856fa19 | 2009-03-19 14:10:50 -0700 | [diff] [blame] | 1496 | mark_page_accessed(obj_priv->pages[i]); |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 1497 | |
| 1498 | page_cache_release(obj_priv->pages[i]); |
| 1499 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1500 | obj_priv->dirty = 0; |
| 1501 | |
Jesse Barnes | 8e7d2b2 | 2009-05-08 16:13:25 -0700 | [diff] [blame] | 1502 | drm_free_large(obj_priv->pages); |
Eric Anholt | 856fa19 | 2009-03-19 14:10:50 -0700 | [diff] [blame] | 1503 | obj_priv->pages = NULL; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1504 | } |
| 1505 | |
| 1506 | static void |
Eric Anholt | ce44b0e | 2008-11-06 16:00:31 -0800 | [diff] [blame] | 1507 | 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] | 1508 | { |
| 1509 | struct drm_device *dev = obj->dev; |
| 1510 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 1511 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 1512 | |
| 1513 | /* Add a reference if we're newly entering the active list. */ |
| 1514 | if (!obj_priv->active) { |
| 1515 | drm_gem_object_reference(obj); |
| 1516 | obj_priv->active = 1; |
| 1517 | } |
| 1518 | /* Move from whatever list we were on to the tail of execution. */ |
Carl Worth | 5e118f4 | 2009-03-20 11:54:25 -0700 | [diff] [blame] | 1519 | spin_lock(&dev_priv->mm.active_list_lock); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1520 | list_move_tail(&obj_priv->list, |
| 1521 | &dev_priv->mm.active_list); |
Carl Worth | 5e118f4 | 2009-03-20 11:54:25 -0700 | [diff] [blame] | 1522 | spin_unlock(&dev_priv->mm.active_list_lock); |
Eric Anholt | ce44b0e | 2008-11-06 16:00:31 -0800 | [diff] [blame] | 1523 | obj_priv->last_rendering_seqno = seqno; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1524 | } |
| 1525 | |
Eric Anholt | ce44b0e | 2008-11-06 16:00:31 -0800 | [diff] [blame] | 1526 | static void |
| 1527 | i915_gem_object_move_to_flushing(struct drm_gem_object *obj) |
| 1528 | { |
| 1529 | struct drm_device *dev = obj->dev; |
| 1530 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 1531 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 1532 | |
| 1533 | BUG_ON(!obj_priv->active); |
| 1534 | list_move_tail(&obj_priv->list, &dev_priv->mm.flushing_list); |
| 1535 | obj_priv->last_rendering_seqno = 0; |
| 1536 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1537 | |
Chris Wilson | 963b483 | 2009-09-20 23:03:54 +0100 | [diff] [blame] | 1538 | /* Immediately discard the backing storage */ |
| 1539 | static void |
| 1540 | i915_gem_object_truncate(struct drm_gem_object *obj) |
| 1541 | { |
Chris Wilson | bb6baf7 | 2009-09-22 14:24:13 +0100 | [diff] [blame] | 1542 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 1543 | struct inode *inode; |
Chris Wilson | 963b483 | 2009-09-20 23:03:54 +0100 | [diff] [blame] | 1544 | |
Chris Wilson | bb6baf7 | 2009-09-22 14:24:13 +0100 | [diff] [blame] | 1545 | inode = obj->filp->f_path.dentry->d_inode; |
| 1546 | if (inode->i_op->truncate) |
| 1547 | inode->i_op->truncate (inode); |
| 1548 | |
| 1549 | obj_priv->madv = __I915_MADV_PURGED; |
Chris Wilson | 963b483 | 2009-09-20 23:03:54 +0100 | [diff] [blame] | 1550 | } |
| 1551 | |
| 1552 | static inline int |
| 1553 | i915_gem_object_is_purgeable(struct drm_i915_gem_object *obj_priv) |
| 1554 | { |
| 1555 | return obj_priv->madv == I915_MADV_DONTNEED; |
| 1556 | } |
| 1557 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1558 | static void |
| 1559 | i915_gem_object_move_to_inactive(struct drm_gem_object *obj) |
| 1560 | { |
| 1561 | struct drm_device *dev = obj->dev; |
| 1562 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 1563 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 1564 | |
| 1565 | i915_verify_inactive(dev, __FILE__, __LINE__); |
| 1566 | if (obj_priv->pin_count != 0) |
| 1567 | list_del_init(&obj_priv->list); |
| 1568 | else |
| 1569 | list_move_tail(&obj_priv->list, &dev_priv->mm.inactive_list); |
| 1570 | |
Eric Anholt | ce44b0e | 2008-11-06 16:00:31 -0800 | [diff] [blame] | 1571 | obj_priv->last_rendering_seqno = 0; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1572 | if (obj_priv->active) { |
| 1573 | obj_priv->active = 0; |
| 1574 | drm_gem_object_unreference(obj); |
| 1575 | } |
| 1576 | i915_verify_inactive(dev, __FILE__, __LINE__); |
| 1577 | } |
| 1578 | |
| 1579 | /** |
| 1580 | * Creates a new sequence number, emitting a write of it to the status page |
| 1581 | * plus an interrupt, which will trigger i915_user_interrupt_handler. |
| 1582 | * |
| 1583 | * Must be called with struct_lock held. |
| 1584 | * |
| 1585 | * Returned sequence numbers are nonzero on success. |
| 1586 | */ |
Daniel Vetter | 5a5a0c6 | 2009-09-15 22:57:36 +0200 | [diff] [blame] | 1587 | uint32_t |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 1588 | i915_add_request(struct drm_device *dev, struct drm_file *file_priv, |
| 1589 | uint32_t flush_domains) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1590 | { |
| 1591 | drm_i915_private_t *dev_priv = dev->dev_private; |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 1592 | struct drm_i915_file_private *i915_file_priv = NULL; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1593 | struct drm_i915_gem_request *request; |
| 1594 | uint32_t seqno; |
| 1595 | int was_empty; |
| 1596 | RING_LOCALS; |
| 1597 | |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 1598 | if (file_priv != NULL) |
| 1599 | i915_file_priv = file_priv->driver_priv; |
| 1600 | |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 1601 | request = kzalloc(sizeof(*request), GFP_KERNEL); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1602 | if (request == NULL) |
| 1603 | return 0; |
| 1604 | |
| 1605 | /* Grab the seqno we're going to make this request be, and bump the |
| 1606 | * next (skipping 0 so it can be the reserved no-seqno value). |
| 1607 | */ |
| 1608 | seqno = dev_priv->mm.next_gem_seqno; |
| 1609 | dev_priv->mm.next_gem_seqno++; |
| 1610 | if (dev_priv->mm.next_gem_seqno == 0) |
| 1611 | dev_priv->mm.next_gem_seqno++; |
| 1612 | |
| 1613 | BEGIN_LP_RING(4); |
| 1614 | OUT_RING(MI_STORE_DWORD_INDEX); |
| 1615 | OUT_RING(I915_GEM_HWS_INDEX << MI_STORE_DWORD_INDEX_SHIFT); |
| 1616 | OUT_RING(seqno); |
| 1617 | |
| 1618 | OUT_RING(MI_USER_INTERRUPT); |
| 1619 | ADVANCE_LP_RING(); |
| 1620 | |
Zhao Yakui | 44d98a6 | 2009-10-09 11:39:40 +0800 | [diff] [blame] | 1621 | DRM_DEBUG_DRIVER("%d\n", seqno); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1622 | |
| 1623 | request->seqno = seqno; |
| 1624 | request->emitted_jiffies = jiffies; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1625 | was_empty = list_empty(&dev_priv->mm.request_list); |
| 1626 | list_add_tail(&request->list, &dev_priv->mm.request_list); |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 1627 | if (i915_file_priv) { |
| 1628 | list_add_tail(&request->client_list, |
| 1629 | &i915_file_priv->mm.request_list); |
| 1630 | } else { |
| 1631 | INIT_LIST_HEAD(&request->client_list); |
| 1632 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1633 | |
Eric Anholt | ce44b0e | 2008-11-06 16:00:31 -0800 | [diff] [blame] | 1634 | /* Associate any objects on the flushing list matching the write |
| 1635 | * domain we're flushing with our flush. |
| 1636 | */ |
| 1637 | if (flush_domains != 0) { |
| 1638 | struct drm_i915_gem_object *obj_priv, *next; |
| 1639 | |
| 1640 | list_for_each_entry_safe(obj_priv, next, |
| 1641 | &dev_priv->mm.flushing_list, list) { |
| 1642 | struct drm_gem_object *obj = obj_priv->obj; |
| 1643 | |
| 1644 | if ((obj->write_domain & flush_domains) == |
| 1645 | obj->write_domain) { |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 1646 | uint32_t old_write_domain = obj->write_domain; |
| 1647 | |
Eric Anholt | ce44b0e | 2008-11-06 16:00:31 -0800 | [diff] [blame] | 1648 | obj->write_domain = 0; |
| 1649 | i915_gem_object_move_to_active(obj, seqno); |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 1650 | |
| 1651 | trace_i915_gem_object_change_domain(obj, |
| 1652 | obj->read_domains, |
| 1653 | old_write_domain); |
Eric Anholt | ce44b0e | 2008-11-06 16:00:31 -0800 | [diff] [blame] | 1654 | } |
| 1655 | } |
| 1656 | |
| 1657 | } |
| 1658 | |
Ben Gamari | f65d942 | 2009-09-14 17:48:44 -0400 | [diff] [blame] | 1659 | if (!dev_priv->mm.suspended) { |
| 1660 | mod_timer(&dev_priv->hangcheck_timer, jiffies + DRM_I915_HANGCHECK_PERIOD); |
| 1661 | if (was_empty) |
| 1662 | queue_delayed_work(dev_priv->wq, &dev_priv->mm.retire_work, HZ); |
| 1663 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1664 | return seqno; |
| 1665 | } |
| 1666 | |
| 1667 | /** |
| 1668 | * Command execution barrier |
| 1669 | * |
| 1670 | * Ensures that all commands in the ring are finished |
| 1671 | * before signalling the CPU |
| 1672 | */ |
Eric Anholt | 3043c60 | 2008-10-02 12:24:47 -0700 | [diff] [blame] | 1673 | static uint32_t |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1674 | i915_retire_commands(struct drm_device *dev) |
| 1675 | { |
| 1676 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 1677 | uint32_t cmd = MI_FLUSH | MI_NO_WRITE_FLUSH; |
| 1678 | uint32_t flush_domains = 0; |
| 1679 | RING_LOCALS; |
| 1680 | |
| 1681 | /* The sampler always gets flushed on i965 (sigh) */ |
| 1682 | if (IS_I965G(dev)) |
| 1683 | flush_domains |= I915_GEM_DOMAIN_SAMPLER; |
| 1684 | BEGIN_LP_RING(2); |
| 1685 | OUT_RING(cmd); |
| 1686 | OUT_RING(0); /* noop */ |
| 1687 | ADVANCE_LP_RING(); |
| 1688 | return flush_domains; |
| 1689 | } |
| 1690 | |
| 1691 | /** |
| 1692 | * Moves buffers associated only with the given active seqno from the active |
| 1693 | * to inactive list, potentially freeing them. |
| 1694 | */ |
| 1695 | static void |
| 1696 | i915_gem_retire_request(struct drm_device *dev, |
| 1697 | struct drm_i915_gem_request *request) |
| 1698 | { |
| 1699 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 1700 | |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 1701 | trace_i915_gem_request_retire(dev, request->seqno); |
| 1702 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1703 | /* Move any buffers on the active list that are no longer referenced |
| 1704 | * by the ringbuffer to the flushing/inactive lists as appropriate. |
| 1705 | */ |
Carl Worth | 5e118f4 | 2009-03-20 11:54:25 -0700 | [diff] [blame] | 1706 | spin_lock(&dev_priv->mm.active_list_lock); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1707 | while (!list_empty(&dev_priv->mm.active_list)) { |
| 1708 | struct drm_gem_object *obj; |
| 1709 | struct drm_i915_gem_object *obj_priv; |
| 1710 | |
| 1711 | obj_priv = list_first_entry(&dev_priv->mm.active_list, |
| 1712 | struct drm_i915_gem_object, |
| 1713 | list); |
| 1714 | obj = obj_priv->obj; |
| 1715 | |
| 1716 | /* If the seqno being retired doesn't match the oldest in the |
| 1717 | * list, then the oldest in the list must still be newer than |
| 1718 | * this seqno. |
| 1719 | */ |
| 1720 | if (obj_priv->last_rendering_seqno != request->seqno) |
Carl Worth | 5e118f4 | 2009-03-20 11:54:25 -0700 | [diff] [blame] | 1721 | goto out; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1722 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1723 | #if WATCH_LRU |
| 1724 | DRM_INFO("%s: retire %d moves to inactive list %p\n", |
| 1725 | __func__, request->seqno, obj); |
| 1726 | #endif |
| 1727 | |
Eric Anholt | ce44b0e | 2008-11-06 16:00:31 -0800 | [diff] [blame] | 1728 | if (obj->write_domain != 0) |
| 1729 | i915_gem_object_move_to_flushing(obj); |
Shaohua Li | 68c8434 | 2009-04-08 10:58:23 +0800 | [diff] [blame] | 1730 | else { |
| 1731 | /* Take a reference on the object so it won't be |
| 1732 | * freed while the spinlock is held. The list |
| 1733 | * protection for this spinlock is safe when breaking |
| 1734 | * the lock like this since the next thing we do |
| 1735 | * is just get the head of the list again. |
| 1736 | */ |
| 1737 | drm_gem_object_reference(obj); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1738 | i915_gem_object_move_to_inactive(obj); |
Shaohua Li | 68c8434 | 2009-04-08 10:58:23 +0800 | [diff] [blame] | 1739 | spin_unlock(&dev_priv->mm.active_list_lock); |
| 1740 | drm_gem_object_unreference(obj); |
| 1741 | spin_lock(&dev_priv->mm.active_list_lock); |
| 1742 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1743 | } |
Carl Worth | 5e118f4 | 2009-03-20 11:54:25 -0700 | [diff] [blame] | 1744 | out: |
| 1745 | spin_unlock(&dev_priv->mm.active_list_lock); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1746 | } |
| 1747 | |
| 1748 | /** |
| 1749 | * Returns true if seq1 is later than seq2. |
| 1750 | */ |
Ben Gamari | 22be172 | 2009-09-14 17:48:43 -0400 | [diff] [blame] | 1751 | bool |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1752 | i915_seqno_passed(uint32_t seq1, uint32_t seq2) |
| 1753 | { |
| 1754 | return (int32_t)(seq1 - seq2) >= 0; |
| 1755 | } |
| 1756 | |
| 1757 | uint32_t |
| 1758 | i915_get_gem_seqno(struct drm_device *dev) |
| 1759 | { |
| 1760 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 1761 | |
| 1762 | return READ_HWSP(dev_priv, I915_GEM_HWS_INDEX); |
| 1763 | } |
| 1764 | |
| 1765 | /** |
| 1766 | * This function clears the request list as sequence numbers are passed. |
| 1767 | */ |
| 1768 | void |
| 1769 | i915_gem_retire_requests(struct drm_device *dev) |
| 1770 | { |
| 1771 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 1772 | uint32_t seqno; |
| 1773 | |
Chris Wilson | 9d34e5d | 2009-09-24 05:26:06 +0100 | [diff] [blame] | 1774 | if (!dev_priv->hw_status_page || list_empty(&dev_priv->mm.request_list)) |
Karsten Wiese | 6c0594a | 2009-02-23 15:07:57 +0100 | [diff] [blame] | 1775 | return; |
| 1776 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1777 | seqno = i915_get_gem_seqno(dev); |
| 1778 | |
| 1779 | while (!list_empty(&dev_priv->mm.request_list)) { |
| 1780 | struct drm_i915_gem_request *request; |
| 1781 | uint32_t retiring_seqno; |
| 1782 | |
| 1783 | request = list_first_entry(&dev_priv->mm.request_list, |
| 1784 | struct drm_i915_gem_request, |
| 1785 | list); |
| 1786 | retiring_seqno = request->seqno; |
| 1787 | |
| 1788 | if (i915_seqno_passed(seqno, retiring_seqno) || |
Ben Gamari | ba1234d | 2009-09-14 17:48:47 -0400 | [diff] [blame] | 1789 | atomic_read(&dev_priv->mm.wedged)) { |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1790 | i915_gem_retire_request(dev, request); |
| 1791 | |
| 1792 | list_del(&request->list); |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 1793 | list_del(&request->client_list); |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 1794 | kfree(request); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1795 | } else |
| 1796 | break; |
| 1797 | } |
Chris Wilson | 9d34e5d | 2009-09-24 05:26:06 +0100 | [diff] [blame] | 1798 | |
| 1799 | if (unlikely (dev_priv->trace_irq_seqno && |
| 1800 | i915_seqno_passed(dev_priv->trace_irq_seqno, seqno))) { |
| 1801 | i915_user_irq_put(dev); |
| 1802 | dev_priv->trace_irq_seqno = 0; |
| 1803 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1804 | } |
| 1805 | |
| 1806 | void |
| 1807 | i915_gem_retire_work_handler(struct work_struct *work) |
| 1808 | { |
| 1809 | drm_i915_private_t *dev_priv; |
| 1810 | struct drm_device *dev; |
| 1811 | |
| 1812 | dev_priv = container_of(work, drm_i915_private_t, |
| 1813 | mm.retire_work.work); |
| 1814 | dev = dev_priv->dev; |
| 1815 | |
| 1816 | mutex_lock(&dev->struct_mutex); |
| 1817 | i915_gem_retire_requests(dev); |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 1818 | if (!dev_priv->mm.suspended && |
| 1819 | !list_empty(&dev_priv->mm.request_list)) |
Eric Anholt | 9c9fe1f | 2009-08-03 16:09:16 -0700 | [diff] [blame] | 1820 | queue_delayed_work(dev_priv->wq, &dev_priv->mm.retire_work, HZ); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1821 | mutex_unlock(&dev->struct_mutex); |
| 1822 | } |
| 1823 | |
Daniel Vetter | 5a5a0c6 | 2009-09-15 22:57:36 +0200 | [diff] [blame] | 1824 | int |
Daniel Vetter | 48764bf | 2009-09-15 22:57:32 +0200 | [diff] [blame] | 1825 | i915_do_wait_request(struct drm_device *dev, uint32_t seqno, int interruptible) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1826 | { |
| 1827 | drm_i915_private_t *dev_priv = dev->dev_private; |
Jesse Barnes | 802c7eb | 2009-05-05 16:03:48 -0700 | [diff] [blame] | 1828 | u32 ier; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1829 | int ret = 0; |
| 1830 | |
| 1831 | BUG_ON(seqno == 0); |
| 1832 | |
Ben Gamari | ba1234d | 2009-09-14 17:48:47 -0400 | [diff] [blame] | 1833 | if (atomic_read(&dev_priv->mm.wedged)) |
Ben Gamari | ffed1d0 | 2009-09-14 17:48:41 -0400 | [diff] [blame] | 1834 | return -EIO; |
| 1835 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1836 | if (!i915_seqno_passed(i915_get_gem_seqno(dev), seqno)) { |
Adam Jackson | f2b115e | 2009-12-03 17:14:42 -0500 | [diff] [blame] | 1837 | if (IS_IRONLAKE(dev)) |
Zhenyu Wang | 036a4a7 | 2009-06-08 14:40:19 +0800 | [diff] [blame] | 1838 | ier = I915_READ(DEIER) | I915_READ(GTIER); |
| 1839 | else |
| 1840 | ier = I915_READ(IER); |
Jesse Barnes | 802c7eb | 2009-05-05 16:03:48 -0700 | [diff] [blame] | 1841 | if (!ier) { |
| 1842 | DRM_ERROR("something (likely vbetool) disabled " |
| 1843 | "interrupts, re-enabling\n"); |
| 1844 | i915_driver_irq_preinstall(dev); |
| 1845 | i915_driver_irq_postinstall(dev); |
| 1846 | } |
| 1847 | |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 1848 | trace_i915_gem_request_wait_begin(dev, seqno); |
| 1849 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1850 | dev_priv->mm.waiting_gem_seqno = seqno; |
| 1851 | i915_user_irq_get(dev); |
Daniel Vetter | 48764bf | 2009-09-15 22:57:32 +0200 | [diff] [blame] | 1852 | if (interruptible) |
| 1853 | ret = wait_event_interruptible(dev_priv->irq_queue, |
| 1854 | i915_seqno_passed(i915_get_gem_seqno(dev), seqno) || |
| 1855 | atomic_read(&dev_priv->mm.wedged)); |
| 1856 | else |
| 1857 | wait_event(dev_priv->irq_queue, |
| 1858 | i915_seqno_passed(i915_get_gem_seqno(dev), seqno) || |
| 1859 | atomic_read(&dev_priv->mm.wedged)); |
| 1860 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1861 | i915_user_irq_put(dev); |
| 1862 | dev_priv->mm.waiting_gem_seqno = 0; |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 1863 | |
| 1864 | trace_i915_gem_request_wait_end(dev, seqno); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1865 | } |
Ben Gamari | ba1234d | 2009-09-14 17:48:47 -0400 | [diff] [blame] | 1866 | if (atomic_read(&dev_priv->mm.wedged)) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1867 | ret = -EIO; |
| 1868 | |
| 1869 | if (ret && ret != -ERESTARTSYS) |
| 1870 | DRM_ERROR("%s returns %d (awaiting %d at %d)\n", |
| 1871 | __func__, ret, seqno, i915_get_gem_seqno(dev)); |
| 1872 | |
| 1873 | /* Directly dispatch request retiring. While we have the work queue |
| 1874 | * to handle this, the waiter on a request often wants an associated |
| 1875 | * buffer to have made it to the inactive list, and we would need |
| 1876 | * a separate wait queue to handle that. |
| 1877 | */ |
| 1878 | if (ret == 0) |
| 1879 | i915_gem_retire_requests(dev); |
| 1880 | |
| 1881 | return ret; |
| 1882 | } |
| 1883 | |
Daniel Vetter | 48764bf | 2009-09-15 22:57:32 +0200 | [diff] [blame] | 1884 | /** |
| 1885 | * Waits for a sequence number to be signaled, and cleans up the |
| 1886 | * request and object lists appropriately for that event. |
| 1887 | */ |
| 1888 | static int |
| 1889 | i915_wait_request(struct drm_device *dev, uint32_t seqno) |
| 1890 | { |
| 1891 | return i915_do_wait_request(dev, seqno, 1); |
| 1892 | } |
| 1893 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1894 | static void |
| 1895 | i915_gem_flush(struct drm_device *dev, |
| 1896 | uint32_t invalidate_domains, |
| 1897 | uint32_t flush_domains) |
| 1898 | { |
| 1899 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 1900 | uint32_t cmd; |
| 1901 | RING_LOCALS; |
| 1902 | |
| 1903 | #if WATCH_EXEC |
| 1904 | DRM_INFO("%s: invalidate %08x flush %08x\n", __func__, |
| 1905 | invalidate_domains, flush_domains); |
| 1906 | #endif |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 1907 | trace_i915_gem_request_flush(dev, dev_priv->mm.next_gem_seqno, |
| 1908 | invalidate_domains, flush_domains); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1909 | |
| 1910 | if (flush_domains & I915_GEM_DOMAIN_CPU) |
| 1911 | drm_agp_chipset_flush(dev); |
| 1912 | |
Chris Wilson | 21d509e | 2009-06-06 09:46:02 +0100 | [diff] [blame] | 1913 | if ((invalidate_domains | flush_domains) & I915_GEM_GPU_DOMAINS) { |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1914 | /* |
| 1915 | * read/write caches: |
| 1916 | * |
| 1917 | * I915_GEM_DOMAIN_RENDER is always invalidated, but is |
| 1918 | * only flushed if MI_NO_WRITE_FLUSH is unset. On 965, it is |
| 1919 | * also flushed at 2d versus 3d pipeline switches. |
| 1920 | * |
| 1921 | * read-only caches: |
| 1922 | * |
| 1923 | * I915_GEM_DOMAIN_SAMPLER is flushed on pre-965 if |
| 1924 | * MI_READ_FLUSH is set, and is always flushed on 965. |
| 1925 | * |
| 1926 | * I915_GEM_DOMAIN_COMMAND may not exist? |
| 1927 | * |
| 1928 | * I915_GEM_DOMAIN_INSTRUCTION, which exists on 965, is |
| 1929 | * invalidated when MI_EXE_FLUSH is set. |
| 1930 | * |
| 1931 | * I915_GEM_DOMAIN_VERTEX, which exists on 965, is |
| 1932 | * invalidated with every MI_FLUSH. |
| 1933 | * |
| 1934 | * TLBs: |
| 1935 | * |
| 1936 | * On 965, TLBs associated with I915_GEM_DOMAIN_COMMAND |
| 1937 | * and I915_GEM_DOMAIN_CPU in are invalidated at PTE write and |
| 1938 | * I915_GEM_DOMAIN_RENDER and I915_GEM_DOMAIN_SAMPLER |
| 1939 | * are flushed at any MI_FLUSH. |
| 1940 | */ |
| 1941 | |
| 1942 | cmd = MI_FLUSH | MI_NO_WRITE_FLUSH; |
| 1943 | if ((invalidate_domains|flush_domains) & |
| 1944 | I915_GEM_DOMAIN_RENDER) |
| 1945 | cmd &= ~MI_NO_WRITE_FLUSH; |
| 1946 | if (!IS_I965G(dev)) { |
| 1947 | /* |
| 1948 | * On the 965, the sampler cache always gets flushed |
| 1949 | * and this bit is reserved. |
| 1950 | */ |
| 1951 | if (invalidate_domains & I915_GEM_DOMAIN_SAMPLER) |
| 1952 | cmd |= MI_READ_FLUSH; |
| 1953 | } |
| 1954 | if (invalidate_domains & I915_GEM_DOMAIN_INSTRUCTION) |
| 1955 | cmd |= MI_EXE_FLUSH; |
| 1956 | |
| 1957 | #if WATCH_EXEC |
| 1958 | DRM_INFO("%s: queue flush %08x to ring\n", __func__, cmd); |
| 1959 | #endif |
| 1960 | BEGIN_LP_RING(2); |
| 1961 | OUT_RING(cmd); |
Daniel Vetter | 48764bf | 2009-09-15 22:57:32 +0200 | [diff] [blame] | 1962 | OUT_RING(MI_NOOP); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1963 | ADVANCE_LP_RING(); |
| 1964 | } |
| 1965 | } |
| 1966 | |
| 1967 | /** |
| 1968 | * Ensures that all rendering to the object has completed and the object is |
| 1969 | * safe to unbind from the GTT or access from the CPU. |
| 1970 | */ |
| 1971 | static int |
| 1972 | i915_gem_object_wait_rendering(struct drm_gem_object *obj) |
| 1973 | { |
| 1974 | struct drm_device *dev = obj->dev; |
| 1975 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 1976 | int ret; |
| 1977 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 1978 | /* This function only exists to support waiting for existing rendering, |
| 1979 | * not for emitting required flushes. |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1980 | */ |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 1981 | BUG_ON((obj->write_domain & I915_GEM_GPU_DOMAINS) != 0); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1982 | |
| 1983 | /* If there is rendering queued on the buffer being evicted, wait for |
| 1984 | * it. |
| 1985 | */ |
| 1986 | if (obj_priv->active) { |
| 1987 | #if WATCH_BUF |
| 1988 | DRM_INFO("%s: object %p wait for seqno %08x\n", |
| 1989 | __func__, obj, obj_priv->last_rendering_seqno); |
| 1990 | #endif |
| 1991 | ret = i915_wait_request(dev, obj_priv->last_rendering_seqno); |
| 1992 | if (ret != 0) |
| 1993 | return ret; |
| 1994 | } |
| 1995 | |
| 1996 | return 0; |
| 1997 | } |
| 1998 | |
| 1999 | /** |
| 2000 | * Unbinds an object from the GTT aperture. |
| 2001 | */ |
Jesse Barnes | 0f973f2 | 2009-01-26 17:10:45 -0800 | [diff] [blame] | 2002 | int |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2003 | i915_gem_object_unbind(struct drm_gem_object *obj) |
| 2004 | { |
| 2005 | struct drm_device *dev = obj->dev; |
| 2006 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 2007 | int ret = 0; |
| 2008 | |
| 2009 | #if WATCH_BUF |
| 2010 | DRM_INFO("%s:%d %p\n", __func__, __LINE__, obj); |
| 2011 | DRM_INFO("gtt_space %p\n", obj_priv->gtt_space); |
| 2012 | #endif |
| 2013 | if (obj_priv->gtt_space == NULL) |
| 2014 | return 0; |
| 2015 | |
| 2016 | if (obj_priv->pin_count != 0) { |
| 2017 | DRM_ERROR("Attempting to unbind pinned buffer\n"); |
| 2018 | return -EINVAL; |
| 2019 | } |
| 2020 | |
Eric Anholt | 5323fd0 | 2009-09-09 11:50:45 -0700 | [diff] [blame] | 2021 | /* blow away mappings if mapped through GTT */ |
| 2022 | i915_gem_release_mmap(obj); |
| 2023 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2024 | /* Move the object to the CPU domain to ensure that |
| 2025 | * any possible CPU writes while it's not in the GTT |
| 2026 | * are flushed when we go to remap it. This will |
| 2027 | * also ensure that all pending GPU writes are finished |
| 2028 | * before we unbind. |
| 2029 | */ |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2030 | ret = i915_gem_object_set_to_cpu_domain(obj, 1); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2031 | if (ret) { |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2032 | if (ret != -ERESTARTSYS) |
| 2033 | DRM_ERROR("set_domain failed: %d\n", ret); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2034 | return ret; |
| 2035 | } |
| 2036 | |
Eric Anholt | 5323fd0 | 2009-09-09 11:50:45 -0700 | [diff] [blame] | 2037 | BUG_ON(obj_priv->active); |
| 2038 | |
Daniel Vetter | 96b47b6 | 2009-12-15 17:50:00 +0100 | [diff] [blame] | 2039 | /* release the fence reg _after_ flushing */ |
| 2040 | if (obj_priv->fence_reg != I915_FENCE_REG_NONE) |
| 2041 | i915_gem_clear_fence_reg(obj); |
| 2042 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2043 | if (obj_priv->agp_mem != NULL) { |
| 2044 | drm_unbind_agp(obj_priv->agp_mem); |
| 2045 | drm_free_agp(obj_priv->agp_mem, obj->size / PAGE_SIZE); |
| 2046 | obj_priv->agp_mem = NULL; |
| 2047 | } |
| 2048 | |
Eric Anholt | 856fa19 | 2009-03-19 14:10:50 -0700 | [diff] [blame] | 2049 | i915_gem_object_put_pages(obj); |
Chris Wilson | a32808c | 2009-09-20 21:29:47 +0100 | [diff] [blame] | 2050 | BUG_ON(obj_priv->pages_refcount); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2051 | |
| 2052 | if (obj_priv->gtt_space) { |
| 2053 | atomic_dec(&dev->gtt_count); |
| 2054 | atomic_sub(obj->size, &dev->gtt_memory); |
| 2055 | |
| 2056 | drm_mm_put_block(obj_priv->gtt_space); |
| 2057 | obj_priv->gtt_space = NULL; |
| 2058 | } |
| 2059 | |
| 2060 | /* Remove ourselves from the LRU list if present. */ |
| 2061 | if (!list_empty(&obj_priv->list)) |
| 2062 | list_del_init(&obj_priv->list); |
| 2063 | |
Chris Wilson | 963b483 | 2009-09-20 23:03:54 +0100 | [diff] [blame] | 2064 | if (i915_gem_object_is_purgeable(obj_priv)) |
| 2065 | i915_gem_object_truncate(obj); |
| 2066 | |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 2067 | trace_i915_gem_object_unbind(obj); |
| 2068 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2069 | return 0; |
| 2070 | } |
| 2071 | |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2072 | static struct drm_gem_object * |
| 2073 | i915_gem_find_inactive_object(struct drm_device *dev, int min_size) |
| 2074 | { |
| 2075 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 2076 | struct drm_i915_gem_object *obj_priv; |
| 2077 | struct drm_gem_object *best = NULL; |
| 2078 | struct drm_gem_object *first = NULL; |
| 2079 | |
| 2080 | /* Try to find the smallest clean object */ |
| 2081 | list_for_each_entry(obj_priv, &dev_priv->mm.inactive_list, list) { |
| 2082 | struct drm_gem_object *obj = obj_priv->obj; |
| 2083 | if (obj->size >= min_size) { |
Chris Wilson | 963b483 | 2009-09-20 23:03:54 +0100 | [diff] [blame] | 2084 | if ((!obj_priv->dirty || |
| 2085 | i915_gem_object_is_purgeable(obj_priv)) && |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2086 | (!best || obj->size < best->size)) { |
| 2087 | best = obj; |
| 2088 | if (best->size == min_size) |
| 2089 | return best; |
| 2090 | } |
| 2091 | if (!first) |
| 2092 | first = obj; |
| 2093 | } |
| 2094 | } |
| 2095 | |
| 2096 | return best ? best : first; |
| 2097 | } |
| 2098 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2099 | static int |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2100 | i915_gem_evict_everything(struct drm_device *dev) |
| 2101 | { |
| 2102 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 2103 | uint32_t seqno; |
| 2104 | int ret; |
| 2105 | bool lists_empty; |
| 2106 | |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2107 | spin_lock(&dev_priv->mm.active_list_lock); |
| 2108 | lists_empty = (list_empty(&dev_priv->mm.inactive_list) && |
| 2109 | list_empty(&dev_priv->mm.flushing_list) && |
| 2110 | list_empty(&dev_priv->mm.active_list)); |
| 2111 | spin_unlock(&dev_priv->mm.active_list_lock); |
| 2112 | |
Chris Wilson | 9731129 | 2009-09-21 00:22:34 +0100 | [diff] [blame] | 2113 | if (lists_empty) |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2114 | return -ENOSPC; |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2115 | |
| 2116 | /* Flush everything (on to the inactive lists) and evict */ |
| 2117 | i915_gem_flush(dev, I915_GEM_GPU_DOMAINS, I915_GEM_GPU_DOMAINS); |
| 2118 | seqno = i915_add_request(dev, NULL, I915_GEM_GPU_DOMAINS); |
| 2119 | if (seqno == 0) |
| 2120 | return -ENOMEM; |
| 2121 | |
| 2122 | ret = i915_wait_request(dev, seqno); |
| 2123 | if (ret) |
| 2124 | return ret; |
| 2125 | |
Chris Wilson | ab5ee57 | 2009-09-20 19:25:47 +0100 | [diff] [blame] | 2126 | ret = i915_gem_evict_from_inactive_list(dev); |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2127 | if (ret) |
| 2128 | return ret; |
| 2129 | |
| 2130 | spin_lock(&dev_priv->mm.active_list_lock); |
| 2131 | lists_empty = (list_empty(&dev_priv->mm.inactive_list) && |
| 2132 | list_empty(&dev_priv->mm.flushing_list) && |
| 2133 | list_empty(&dev_priv->mm.active_list)); |
| 2134 | spin_unlock(&dev_priv->mm.active_list_lock); |
| 2135 | BUG_ON(!lists_empty); |
| 2136 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2137 | return 0; |
| 2138 | } |
| 2139 | |
| 2140 | static int |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2141 | i915_gem_evict_something(struct drm_device *dev, int min_size) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2142 | { |
| 2143 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 2144 | struct drm_gem_object *obj; |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2145 | int ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2146 | |
| 2147 | for (;;) { |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2148 | i915_gem_retire_requests(dev); |
| 2149 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2150 | /* If there's an inactive buffer available now, grab it |
| 2151 | * and be done. |
| 2152 | */ |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2153 | obj = i915_gem_find_inactive_object(dev, min_size); |
| 2154 | if (obj) { |
| 2155 | struct drm_i915_gem_object *obj_priv; |
| 2156 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2157 | #if WATCH_LRU |
| 2158 | DRM_INFO("%s: evicting %p\n", __func__, obj); |
| 2159 | #endif |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2160 | obj_priv = obj->driver_private; |
| 2161 | BUG_ON(obj_priv->pin_count != 0); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2162 | BUG_ON(obj_priv->active); |
| 2163 | |
| 2164 | /* Wait on the rendering and unbind the buffer. */ |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2165 | return i915_gem_object_unbind(obj); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2166 | } |
| 2167 | |
| 2168 | /* If we didn't get anything, but the ring is still processing |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2169 | * things, wait for the next to finish and hopefully leave us |
| 2170 | * a buffer to evict. |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2171 | */ |
| 2172 | if (!list_empty(&dev_priv->mm.request_list)) { |
| 2173 | struct drm_i915_gem_request *request; |
| 2174 | |
| 2175 | request = list_first_entry(&dev_priv->mm.request_list, |
| 2176 | struct drm_i915_gem_request, |
| 2177 | list); |
| 2178 | |
| 2179 | ret = i915_wait_request(dev, request->seqno); |
| 2180 | if (ret) |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2181 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2182 | |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2183 | continue; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2184 | } |
| 2185 | |
| 2186 | /* If we didn't have anything on the request list but there |
| 2187 | * are buffers awaiting a flush, emit one and try again. |
| 2188 | * When we wait on it, those buffers waiting for that flush |
| 2189 | * will get moved to inactive. |
| 2190 | */ |
| 2191 | if (!list_empty(&dev_priv->mm.flushing_list)) { |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2192 | struct drm_i915_gem_object *obj_priv; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2193 | |
Chris Wilson | 9a1e258 | 2009-09-20 20:16:50 +0100 | [diff] [blame] | 2194 | /* Find an object that we can immediately reuse */ |
| 2195 | list_for_each_entry(obj_priv, &dev_priv->mm.flushing_list, list) { |
| 2196 | obj = obj_priv->obj; |
| 2197 | if (obj->size >= min_size) |
| 2198 | break; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2199 | |
Chris Wilson | 9a1e258 | 2009-09-20 20:16:50 +0100 | [diff] [blame] | 2200 | obj = NULL; |
| 2201 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2202 | |
Chris Wilson | 9a1e258 | 2009-09-20 20:16:50 +0100 | [diff] [blame] | 2203 | if (obj != NULL) { |
| 2204 | uint32_t seqno; |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2205 | |
Chris Wilson | 9a1e258 | 2009-09-20 20:16:50 +0100 | [diff] [blame] | 2206 | i915_gem_flush(dev, |
| 2207 | obj->write_domain, |
| 2208 | obj->write_domain); |
| 2209 | seqno = i915_add_request(dev, NULL, obj->write_domain); |
| 2210 | if (seqno == 0) |
| 2211 | return -ENOMEM; |
| 2212 | |
| 2213 | ret = i915_wait_request(dev, seqno); |
| 2214 | if (ret) |
| 2215 | return ret; |
| 2216 | |
| 2217 | continue; |
| 2218 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2219 | } |
| 2220 | |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2221 | /* If we didn't do any of the above, there's no single buffer |
| 2222 | * large enough to swap out for the new one, so just evict |
| 2223 | * everything and start again. (This should be rare.) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2224 | */ |
Chris Wilson | 9731129 | 2009-09-21 00:22:34 +0100 | [diff] [blame] | 2225 | if (!list_empty (&dev_priv->mm.inactive_list)) |
Chris Wilson | ab5ee57 | 2009-09-20 19:25:47 +0100 | [diff] [blame] | 2226 | return i915_gem_evict_from_inactive_list(dev); |
Chris Wilson | 9731129 | 2009-09-21 00:22:34 +0100 | [diff] [blame] | 2227 | else |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2228 | return i915_gem_evict_everything(dev); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2229 | } |
Keith Packard | ac94a96 | 2008-11-20 23:30:27 -0800 | [diff] [blame] | 2230 | } |
| 2231 | |
Ben Gamari | 6911a9b | 2009-04-02 11:24:54 -0700 | [diff] [blame] | 2232 | int |
Eric Anholt | 856fa19 | 2009-03-19 14:10:50 -0700 | [diff] [blame] | 2233 | i915_gem_object_get_pages(struct drm_gem_object *obj) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2234 | { |
| 2235 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 2236 | int page_count, i; |
| 2237 | struct address_space *mapping; |
| 2238 | struct inode *inode; |
| 2239 | struct page *page; |
| 2240 | int ret; |
| 2241 | |
Eric Anholt | 856fa19 | 2009-03-19 14:10:50 -0700 | [diff] [blame] | 2242 | if (obj_priv->pages_refcount++ != 0) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2243 | return 0; |
| 2244 | |
| 2245 | /* Get the list of pages out of our struct file. They'll be pinned |
| 2246 | * at this point until we release them. |
| 2247 | */ |
| 2248 | page_count = obj->size / PAGE_SIZE; |
Eric Anholt | 856fa19 | 2009-03-19 14:10:50 -0700 | [diff] [blame] | 2249 | BUG_ON(obj_priv->pages != NULL); |
Jesse Barnes | 8e7d2b2 | 2009-05-08 16:13:25 -0700 | [diff] [blame] | 2250 | obj_priv->pages = drm_calloc_large(page_count, sizeof(struct page *)); |
Eric Anholt | 856fa19 | 2009-03-19 14:10:50 -0700 | [diff] [blame] | 2251 | if (obj_priv->pages == NULL) { |
Eric Anholt | 856fa19 | 2009-03-19 14:10:50 -0700 | [diff] [blame] | 2252 | obj_priv->pages_refcount--; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2253 | return -ENOMEM; |
| 2254 | } |
| 2255 | |
| 2256 | inode = obj->filp->f_path.dentry->d_inode; |
| 2257 | mapping = inode->i_mapping; |
| 2258 | for (i = 0; i < page_count; i++) { |
| 2259 | page = read_mapping_page(mapping, i, NULL); |
| 2260 | if (IS_ERR(page)) { |
| 2261 | ret = PTR_ERR(page); |
Eric Anholt | 856fa19 | 2009-03-19 14:10:50 -0700 | [diff] [blame] | 2262 | i915_gem_object_put_pages(obj); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2263 | return ret; |
| 2264 | } |
Eric Anholt | 856fa19 | 2009-03-19 14:10:50 -0700 | [diff] [blame] | 2265 | obj_priv->pages[i] = page; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2266 | } |
Eric Anholt | 280b713 | 2009-03-12 16:56:27 -0700 | [diff] [blame] | 2267 | |
| 2268 | if (obj_priv->tiling_mode != I915_TILING_NONE) |
| 2269 | i915_gem_object_do_bit_17_swizzle(obj); |
| 2270 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2271 | return 0; |
| 2272 | } |
| 2273 | |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2274 | static void i965_write_fence_reg(struct drm_i915_fence_reg *reg) |
| 2275 | { |
| 2276 | struct drm_gem_object *obj = reg->obj; |
| 2277 | struct drm_device *dev = obj->dev; |
| 2278 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 2279 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 2280 | int regnum = obj_priv->fence_reg; |
| 2281 | uint64_t val; |
| 2282 | |
| 2283 | val = (uint64_t)((obj_priv->gtt_offset + obj->size - 4096) & |
| 2284 | 0xfffff000) << 32; |
| 2285 | val |= obj_priv->gtt_offset & 0xfffff000; |
| 2286 | val |= ((obj_priv->stride / 128) - 1) << I965_FENCE_PITCH_SHIFT; |
| 2287 | if (obj_priv->tiling_mode == I915_TILING_Y) |
| 2288 | val |= 1 << I965_FENCE_TILING_Y_SHIFT; |
| 2289 | val |= I965_FENCE_REG_VALID; |
| 2290 | |
| 2291 | I915_WRITE64(FENCE_REG_965_0 + (regnum * 8), val); |
| 2292 | } |
| 2293 | |
| 2294 | static void i915_write_fence_reg(struct drm_i915_fence_reg *reg) |
| 2295 | { |
| 2296 | struct drm_gem_object *obj = reg->obj; |
| 2297 | struct drm_device *dev = obj->dev; |
| 2298 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 2299 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 2300 | int regnum = obj_priv->fence_reg; |
Jesse Barnes | 0f973f2 | 2009-01-26 17:10:45 -0800 | [diff] [blame] | 2301 | int tile_width; |
Eric Anholt | dc529a4 | 2009-03-10 22:34:49 -0700 | [diff] [blame] | 2302 | uint32_t fence_reg, val; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2303 | uint32_t pitch_val; |
| 2304 | |
| 2305 | if ((obj_priv->gtt_offset & ~I915_FENCE_START_MASK) || |
| 2306 | (obj_priv->gtt_offset & (obj->size - 1))) { |
Linus Torvalds | f06da26 | 2009-02-09 08:57:29 -0800 | [diff] [blame] | 2307 | WARN(1, "%s: object 0x%08x not 1M or size (0x%zx) aligned\n", |
Jesse Barnes | 0f973f2 | 2009-01-26 17:10:45 -0800 | [diff] [blame] | 2308 | __func__, obj_priv->gtt_offset, obj->size); |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2309 | return; |
| 2310 | } |
| 2311 | |
Jesse Barnes | 0f973f2 | 2009-01-26 17:10:45 -0800 | [diff] [blame] | 2312 | if (obj_priv->tiling_mode == I915_TILING_Y && |
| 2313 | HAS_128_BYTE_Y_TILING(dev)) |
| 2314 | tile_width = 128; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2315 | else |
Jesse Barnes | 0f973f2 | 2009-01-26 17:10:45 -0800 | [diff] [blame] | 2316 | tile_width = 512; |
| 2317 | |
| 2318 | /* Note: pitch better be a power of two tile widths */ |
| 2319 | pitch_val = obj_priv->stride / tile_width; |
| 2320 | pitch_val = ffs(pitch_val) - 1; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2321 | |
| 2322 | val = obj_priv->gtt_offset; |
| 2323 | if (obj_priv->tiling_mode == I915_TILING_Y) |
| 2324 | val |= 1 << I830_FENCE_TILING_Y_SHIFT; |
| 2325 | val |= I915_FENCE_SIZE_BITS(obj->size); |
| 2326 | val |= pitch_val << I830_FENCE_PITCH_SHIFT; |
| 2327 | val |= I830_FENCE_REG_VALID; |
| 2328 | |
Eric Anholt | dc529a4 | 2009-03-10 22:34:49 -0700 | [diff] [blame] | 2329 | if (regnum < 8) |
| 2330 | fence_reg = FENCE_REG_830_0 + (regnum * 4); |
| 2331 | else |
| 2332 | fence_reg = FENCE_REG_945_8 + ((regnum - 8) * 4); |
| 2333 | I915_WRITE(fence_reg, val); |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2334 | } |
| 2335 | |
| 2336 | static void i830_write_fence_reg(struct drm_i915_fence_reg *reg) |
| 2337 | { |
| 2338 | struct drm_gem_object *obj = reg->obj; |
| 2339 | struct drm_device *dev = obj->dev; |
| 2340 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 2341 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 2342 | int regnum = obj_priv->fence_reg; |
| 2343 | uint32_t val; |
| 2344 | uint32_t pitch_val; |
Daniel Vetter | 8d7773a | 2009-03-29 14:09:41 +0200 | [diff] [blame] | 2345 | uint32_t fence_size_bits; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2346 | |
Daniel Vetter | 8d7773a | 2009-03-29 14:09:41 +0200 | [diff] [blame] | 2347 | if ((obj_priv->gtt_offset & ~I830_FENCE_START_MASK) || |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2348 | (obj_priv->gtt_offset & (obj->size - 1))) { |
Daniel Vetter | 8d7773a | 2009-03-29 14:09:41 +0200 | [diff] [blame] | 2349 | WARN(1, "%s: object 0x%08x not 512K or size aligned\n", |
Jesse Barnes | 0f973f2 | 2009-01-26 17:10:45 -0800 | [diff] [blame] | 2350 | __func__, obj_priv->gtt_offset); |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2351 | return; |
| 2352 | } |
| 2353 | |
Eric Anholt | e76a16d | 2009-05-26 17:44:56 -0700 | [diff] [blame] | 2354 | pitch_val = obj_priv->stride / 128; |
| 2355 | pitch_val = ffs(pitch_val) - 1; |
| 2356 | WARN_ON(pitch_val > I830_FENCE_MAX_PITCH_VAL); |
| 2357 | |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2358 | val = obj_priv->gtt_offset; |
| 2359 | if (obj_priv->tiling_mode == I915_TILING_Y) |
| 2360 | val |= 1 << I830_FENCE_TILING_Y_SHIFT; |
Daniel Vetter | 8d7773a | 2009-03-29 14:09:41 +0200 | [diff] [blame] | 2361 | fence_size_bits = I830_FENCE_SIZE_BITS(obj->size); |
| 2362 | WARN_ON(fence_size_bits & ~0x00000f00); |
| 2363 | val |= fence_size_bits; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2364 | val |= pitch_val << I830_FENCE_PITCH_SHIFT; |
| 2365 | val |= I830_FENCE_REG_VALID; |
| 2366 | |
| 2367 | I915_WRITE(FENCE_REG_830_0 + (regnum * 4), val); |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2368 | } |
| 2369 | |
| 2370 | /** |
| 2371 | * i915_gem_object_get_fence_reg - set up a fence reg for an object |
| 2372 | * @obj: object to map through a fence reg |
| 2373 | * |
| 2374 | * When mapping objects through the GTT, userspace wants to be able to write |
| 2375 | * to them without having to worry about swizzling if the object is tiled. |
| 2376 | * |
| 2377 | * This function walks the fence regs looking for a free one for @obj, |
| 2378 | * stealing one if it can't find any. |
| 2379 | * |
| 2380 | * It then sets up the reg based on the object's properties: address, pitch |
| 2381 | * and tiling format. |
| 2382 | */ |
Chris Wilson | 8c4b8c3 | 2009-06-17 22:08:52 +0100 | [diff] [blame] | 2383 | int |
| 2384 | i915_gem_object_get_fence_reg(struct drm_gem_object *obj) |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2385 | { |
| 2386 | struct drm_device *dev = obj->dev; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 2387 | struct drm_i915_private *dev_priv = dev->dev_private; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2388 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 2389 | struct drm_i915_fence_reg *reg = NULL; |
Chris Wilson | fc7170b | 2009-02-11 14:26:46 +0000 | [diff] [blame] | 2390 | struct drm_i915_gem_object *old_obj_priv = NULL; |
| 2391 | int i, ret, avail; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2392 | |
Eric Anholt | a09ba7f | 2009-08-29 12:49:51 -0700 | [diff] [blame] | 2393 | /* Just update our place in the LRU if our fence is getting used. */ |
| 2394 | if (obj_priv->fence_reg != I915_FENCE_REG_NONE) { |
| 2395 | list_move_tail(&obj_priv->fence_list, &dev_priv->mm.fence_list); |
| 2396 | return 0; |
| 2397 | } |
| 2398 | |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2399 | switch (obj_priv->tiling_mode) { |
| 2400 | case I915_TILING_NONE: |
| 2401 | WARN(1, "allocating a fence for non-tiled object?\n"); |
| 2402 | break; |
| 2403 | case I915_TILING_X: |
Jesse Barnes | 0f973f2 | 2009-01-26 17:10:45 -0800 | [diff] [blame] | 2404 | if (!obj_priv->stride) |
| 2405 | return -EINVAL; |
| 2406 | WARN((obj_priv->stride & (512 - 1)), |
| 2407 | "object 0x%08x is X tiled but has non-512B pitch\n", |
| 2408 | obj_priv->gtt_offset); |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2409 | break; |
| 2410 | case I915_TILING_Y: |
Jesse Barnes | 0f973f2 | 2009-01-26 17:10:45 -0800 | [diff] [blame] | 2411 | if (!obj_priv->stride) |
| 2412 | return -EINVAL; |
| 2413 | WARN((obj_priv->stride & (128 - 1)), |
| 2414 | "object 0x%08x is Y tiled but has non-128B pitch\n", |
| 2415 | obj_priv->gtt_offset); |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2416 | break; |
| 2417 | } |
| 2418 | |
| 2419 | /* First try to find a free reg */ |
Chris Wilson | fc7170b | 2009-02-11 14:26:46 +0000 | [diff] [blame] | 2420 | avail = 0; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2421 | for (i = dev_priv->fence_reg_start; i < dev_priv->num_fence_regs; i++) { |
| 2422 | reg = &dev_priv->fence_regs[i]; |
| 2423 | if (!reg->obj) |
| 2424 | break; |
Chris Wilson | fc7170b | 2009-02-11 14:26:46 +0000 | [diff] [blame] | 2425 | |
| 2426 | old_obj_priv = reg->obj->driver_private; |
| 2427 | if (!old_obj_priv->pin_count) |
| 2428 | avail++; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2429 | } |
| 2430 | |
| 2431 | /* None available, try to steal one or wait for a user to finish */ |
| 2432 | if (i == dev_priv->num_fence_regs) { |
Eric Anholt | a09ba7f | 2009-08-29 12:49:51 -0700 | [diff] [blame] | 2433 | struct drm_gem_object *old_obj = NULL; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2434 | |
Chris Wilson | fc7170b | 2009-02-11 14:26:46 +0000 | [diff] [blame] | 2435 | if (avail == 0) |
Chris Wilson | 2939e1f | 2009-06-06 09:46:03 +0100 | [diff] [blame] | 2436 | return -ENOSPC; |
Chris Wilson | fc7170b | 2009-02-11 14:26:46 +0000 | [diff] [blame] | 2437 | |
Eric Anholt | a09ba7f | 2009-08-29 12:49:51 -0700 | [diff] [blame] | 2438 | list_for_each_entry(old_obj_priv, &dev_priv->mm.fence_list, |
| 2439 | fence_list) { |
| 2440 | old_obj = old_obj_priv->obj; |
Chris Wilson | d7619c4 | 2009-02-11 14:26:47 +0000 | [diff] [blame] | 2441 | |
Chris Wilson | d7619c4 | 2009-02-11 14:26:47 +0000 | [diff] [blame] | 2442 | if (old_obj_priv->pin_count) |
| 2443 | continue; |
| 2444 | |
Eric Anholt | a09ba7f | 2009-08-29 12:49:51 -0700 | [diff] [blame] | 2445 | /* Take a reference, as otherwise the wait_rendering |
| 2446 | * below may cause the object to get freed out from |
| 2447 | * under us. |
| 2448 | */ |
| 2449 | drm_gem_object_reference(old_obj); |
| 2450 | |
Chris Wilson | d7619c4 | 2009-02-11 14:26:47 +0000 | [diff] [blame] | 2451 | /* i915 uses fences for GPU access to tiled buffers */ |
| 2452 | if (IS_I965G(dev) || !old_obj_priv->active) |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2453 | break; |
Chris Wilson | d7619c4 | 2009-02-11 14:26:47 +0000 | [diff] [blame] | 2454 | |
Eric Anholt | a09ba7f | 2009-08-29 12:49:51 -0700 | [diff] [blame] | 2455 | /* This brings the object to the head of the LRU if it |
| 2456 | * had been written to. The only way this should |
| 2457 | * result in us waiting longer than the expected |
| 2458 | * optimal amount of time is if there was a |
| 2459 | * fence-using buffer later that was read-only. |
| 2460 | */ |
| 2461 | i915_gem_object_flush_gpu_write_domain(old_obj); |
| 2462 | ret = i915_gem_object_wait_rendering(old_obj); |
Chris Wilson | 58c2fb6 | 2009-09-01 12:02:39 +0100 | [diff] [blame] | 2463 | if (ret != 0) { |
| 2464 | drm_gem_object_unreference(old_obj); |
Chris Wilson | d7619c4 | 2009-02-11 14:26:47 +0000 | [diff] [blame] | 2465 | return ret; |
Chris Wilson | 58c2fb6 | 2009-09-01 12:02:39 +0100 | [diff] [blame] | 2466 | } |
| 2467 | |
Eric Anholt | a09ba7f | 2009-08-29 12:49:51 -0700 | [diff] [blame] | 2468 | break; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2469 | } |
| 2470 | |
| 2471 | /* |
| 2472 | * Zap this virtual mapping so we can set up a fence again |
| 2473 | * for this object next time we need it. |
| 2474 | */ |
Chris Wilson | 58c2fb6 | 2009-09-01 12:02:39 +0100 | [diff] [blame] | 2475 | i915_gem_release_mmap(old_obj); |
| 2476 | |
Eric Anholt | a09ba7f | 2009-08-29 12:49:51 -0700 | [diff] [blame] | 2477 | i = old_obj_priv->fence_reg; |
Chris Wilson | 58c2fb6 | 2009-09-01 12:02:39 +0100 | [diff] [blame] | 2478 | reg = &dev_priv->fence_regs[i]; |
| 2479 | |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2480 | old_obj_priv->fence_reg = I915_FENCE_REG_NONE; |
Eric Anholt | a09ba7f | 2009-08-29 12:49:51 -0700 | [diff] [blame] | 2481 | list_del_init(&old_obj_priv->fence_list); |
Chris Wilson | 58c2fb6 | 2009-09-01 12:02:39 +0100 | [diff] [blame] | 2482 | |
Eric Anholt | a09ba7f | 2009-08-29 12:49:51 -0700 | [diff] [blame] | 2483 | drm_gem_object_unreference(old_obj); |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2484 | } |
| 2485 | |
| 2486 | obj_priv->fence_reg = i; |
Eric Anholt | a09ba7f | 2009-08-29 12:49:51 -0700 | [diff] [blame] | 2487 | list_add_tail(&obj_priv->fence_list, &dev_priv->mm.fence_list); |
| 2488 | |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2489 | reg->obj = obj; |
| 2490 | |
| 2491 | if (IS_I965G(dev)) |
| 2492 | i965_write_fence_reg(reg); |
| 2493 | else if (IS_I9XX(dev)) |
| 2494 | i915_write_fence_reg(reg); |
| 2495 | else |
| 2496 | i830_write_fence_reg(reg); |
Eric Anholt | d9ddcb9 | 2009-01-27 10:33:49 -0800 | [diff] [blame] | 2497 | |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 2498 | trace_i915_gem_object_get_fence(obj, i, obj_priv->tiling_mode); |
| 2499 | |
Eric Anholt | d9ddcb9 | 2009-01-27 10:33:49 -0800 | [diff] [blame] | 2500 | return 0; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2501 | } |
| 2502 | |
| 2503 | /** |
| 2504 | * i915_gem_clear_fence_reg - clear out fence register info |
| 2505 | * @obj: object to clear |
| 2506 | * |
| 2507 | * Zeroes out the fence register itself and clears out the associated |
| 2508 | * data structures in dev_priv and obj_priv. |
| 2509 | */ |
| 2510 | static void |
| 2511 | i915_gem_clear_fence_reg(struct drm_gem_object *obj) |
| 2512 | { |
| 2513 | struct drm_device *dev = obj->dev; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 2514 | drm_i915_private_t *dev_priv = dev->dev_private; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2515 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 2516 | |
| 2517 | if (IS_I965G(dev)) |
| 2518 | I915_WRITE64(FENCE_REG_965_0 + (obj_priv->fence_reg * 8), 0); |
Eric Anholt | dc529a4 | 2009-03-10 22:34:49 -0700 | [diff] [blame] | 2519 | else { |
| 2520 | uint32_t fence_reg; |
| 2521 | |
| 2522 | if (obj_priv->fence_reg < 8) |
| 2523 | fence_reg = FENCE_REG_830_0 + obj_priv->fence_reg * 4; |
| 2524 | else |
| 2525 | fence_reg = FENCE_REG_945_8 + (obj_priv->fence_reg - |
| 2526 | 8) * 4; |
| 2527 | |
| 2528 | I915_WRITE(fence_reg, 0); |
| 2529 | } |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2530 | |
| 2531 | dev_priv->fence_regs[obj_priv->fence_reg].obj = NULL; |
| 2532 | obj_priv->fence_reg = I915_FENCE_REG_NONE; |
Eric Anholt | a09ba7f | 2009-08-29 12:49:51 -0700 | [diff] [blame] | 2533 | list_del_init(&obj_priv->fence_list); |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2534 | } |
| 2535 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2536 | /** |
Chris Wilson | 52dc7d3 | 2009-06-06 09:46:01 +0100 | [diff] [blame] | 2537 | * i915_gem_object_put_fence_reg - waits on outstanding fenced access |
| 2538 | * to the buffer to finish, and then resets the fence register. |
| 2539 | * @obj: tiled object holding a fence register. |
| 2540 | * |
| 2541 | * Zeroes out the fence register itself and clears out the associated |
| 2542 | * data structures in dev_priv and obj_priv. |
| 2543 | */ |
| 2544 | int |
| 2545 | i915_gem_object_put_fence_reg(struct drm_gem_object *obj) |
| 2546 | { |
| 2547 | struct drm_device *dev = obj->dev; |
| 2548 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 2549 | |
| 2550 | if (obj_priv->fence_reg == I915_FENCE_REG_NONE) |
| 2551 | return 0; |
| 2552 | |
| 2553 | /* On the i915, GPU access to tiled buffers is via a fence, |
| 2554 | * therefore we must wait for any outstanding access to complete |
| 2555 | * before clearing the fence. |
| 2556 | */ |
| 2557 | if (!IS_I965G(dev)) { |
| 2558 | int ret; |
| 2559 | |
| 2560 | i915_gem_object_flush_gpu_write_domain(obj); |
| 2561 | i915_gem_object_flush_gtt_write_domain(obj); |
| 2562 | ret = i915_gem_object_wait_rendering(obj); |
| 2563 | if (ret != 0) |
| 2564 | return ret; |
| 2565 | } |
| 2566 | |
| 2567 | i915_gem_clear_fence_reg (obj); |
| 2568 | |
| 2569 | return 0; |
| 2570 | } |
| 2571 | |
| 2572 | /** |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2573 | * Finds free space in the GTT aperture and binds the object there. |
| 2574 | */ |
| 2575 | static int |
| 2576 | i915_gem_object_bind_to_gtt(struct drm_gem_object *obj, unsigned alignment) |
| 2577 | { |
| 2578 | struct drm_device *dev = obj->dev; |
| 2579 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 2580 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 2581 | struct drm_mm_node *free_space; |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2582 | bool retry_alloc = false; |
| 2583 | int ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2584 | |
Chris Wilson | bb6baf7 | 2009-09-22 14:24:13 +0100 | [diff] [blame] | 2585 | if (obj_priv->madv != I915_MADV_WILLNEED) { |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 2586 | DRM_ERROR("Attempting to bind a purgeable object\n"); |
| 2587 | return -EINVAL; |
| 2588 | } |
| 2589 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2590 | if (alignment == 0) |
Jesse Barnes | 0f973f2 | 2009-01-26 17:10:45 -0800 | [diff] [blame] | 2591 | alignment = i915_gem_get_gtt_alignment(obj); |
Daniel Vetter | 8d7773a | 2009-03-29 14:09:41 +0200 | [diff] [blame] | 2592 | if (alignment & (i915_gem_get_gtt_alignment(obj) - 1)) { |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2593 | DRM_ERROR("Invalid object alignment requested %u\n", alignment); |
| 2594 | return -EINVAL; |
| 2595 | } |
| 2596 | |
| 2597 | search_free: |
| 2598 | free_space = drm_mm_search_free(&dev_priv->mm.gtt_space, |
| 2599 | obj->size, alignment, 0); |
| 2600 | if (free_space != NULL) { |
| 2601 | obj_priv->gtt_space = drm_mm_get_block(free_space, obj->size, |
| 2602 | alignment); |
| 2603 | if (obj_priv->gtt_space != NULL) { |
| 2604 | obj_priv->gtt_space->private = obj; |
| 2605 | obj_priv->gtt_offset = obj_priv->gtt_space->start; |
| 2606 | } |
| 2607 | } |
| 2608 | if (obj_priv->gtt_space == NULL) { |
| 2609 | /* If the gtt is empty and we're still having trouble |
| 2610 | * fitting our object in, we're out of memory. |
| 2611 | */ |
| 2612 | #if WATCH_LRU |
| 2613 | DRM_INFO("%s: GTT full, evicting something\n", __func__); |
| 2614 | #endif |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2615 | ret = i915_gem_evict_something(dev, obj->size); |
Chris Wilson | 9731129 | 2009-09-21 00:22:34 +0100 | [diff] [blame] | 2616 | if (ret) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2617 | return ret; |
Chris Wilson | 9731129 | 2009-09-21 00:22:34 +0100 | [diff] [blame] | 2618 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2619 | goto search_free; |
| 2620 | } |
| 2621 | |
| 2622 | #if WATCH_BUF |
Krzysztof Halasa | cfd43c0 | 2009-06-20 00:31:28 +0200 | [diff] [blame] | 2623 | DRM_INFO("Binding object of size %zd at 0x%08x\n", |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2624 | obj->size, obj_priv->gtt_offset); |
| 2625 | #endif |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2626 | if (retry_alloc) { |
| 2627 | i915_gem_object_set_page_gfp_mask (obj, |
| 2628 | i915_gem_object_get_page_gfp_mask (obj) & ~__GFP_NORETRY); |
| 2629 | } |
Eric Anholt | 856fa19 | 2009-03-19 14:10:50 -0700 | [diff] [blame] | 2630 | ret = i915_gem_object_get_pages(obj); |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2631 | if (retry_alloc) { |
| 2632 | i915_gem_object_set_page_gfp_mask (obj, |
| 2633 | i915_gem_object_get_page_gfp_mask (obj) | __GFP_NORETRY); |
| 2634 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2635 | if (ret) { |
| 2636 | drm_mm_put_block(obj_priv->gtt_space); |
| 2637 | obj_priv->gtt_space = NULL; |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2638 | |
| 2639 | if (ret == -ENOMEM) { |
| 2640 | /* first try to clear up some space from the GTT */ |
| 2641 | ret = i915_gem_evict_something(dev, obj->size); |
| 2642 | if (ret) { |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2643 | /* now try to shrink everyone else */ |
| 2644 | if (! retry_alloc) { |
| 2645 | retry_alloc = true; |
| 2646 | goto search_free; |
| 2647 | } |
| 2648 | |
| 2649 | return ret; |
| 2650 | } |
| 2651 | |
| 2652 | goto search_free; |
| 2653 | } |
| 2654 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2655 | return ret; |
| 2656 | } |
| 2657 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2658 | /* Create an AGP memory structure pointing at our pages, and bind it |
| 2659 | * into the GTT. |
| 2660 | */ |
| 2661 | obj_priv->agp_mem = drm_agp_bind_pages(dev, |
Eric Anholt | 856fa19 | 2009-03-19 14:10:50 -0700 | [diff] [blame] | 2662 | obj_priv->pages, |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2663 | obj->size >> PAGE_SHIFT, |
Keith Packard | ba1eb1d | 2008-10-14 19:55:10 -0700 | [diff] [blame] | 2664 | obj_priv->gtt_offset, |
| 2665 | obj_priv->agp_type); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2666 | if (obj_priv->agp_mem == NULL) { |
Eric Anholt | 856fa19 | 2009-03-19 14:10:50 -0700 | [diff] [blame] | 2667 | i915_gem_object_put_pages(obj); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2668 | drm_mm_put_block(obj_priv->gtt_space); |
| 2669 | obj_priv->gtt_space = NULL; |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2670 | |
| 2671 | ret = i915_gem_evict_something(dev, obj->size); |
Chris Wilson | 9731129 | 2009-09-21 00:22:34 +0100 | [diff] [blame] | 2672 | if (ret) |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2673 | return ret; |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2674 | |
| 2675 | goto search_free; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2676 | } |
| 2677 | atomic_inc(&dev->gtt_count); |
| 2678 | atomic_add(obj->size, &dev->gtt_memory); |
| 2679 | |
| 2680 | /* Assert that the object is not currently in any GPU domain. As it |
| 2681 | * wasn't in the GTT, there shouldn't be any way it could have been in |
| 2682 | * a GPU cache |
| 2683 | */ |
Chris Wilson | 21d509e | 2009-06-06 09:46:02 +0100 | [diff] [blame] | 2684 | BUG_ON(obj->read_domains & I915_GEM_GPU_DOMAINS); |
| 2685 | BUG_ON(obj->write_domain & I915_GEM_GPU_DOMAINS); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2686 | |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 2687 | trace_i915_gem_object_bind(obj, obj_priv->gtt_offset); |
| 2688 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2689 | return 0; |
| 2690 | } |
| 2691 | |
| 2692 | void |
| 2693 | i915_gem_clflush_object(struct drm_gem_object *obj) |
| 2694 | { |
| 2695 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 2696 | |
| 2697 | /* If we don't have a page list set up, then we're not pinned |
| 2698 | * to GPU, and we can ignore the cache flush because it'll happen |
| 2699 | * again at bind time. |
| 2700 | */ |
Eric Anholt | 856fa19 | 2009-03-19 14:10:50 -0700 | [diff] [blame] | 2701 | if (obj_priv->pages == NULL) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2702 | return; |
| 2703 | |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 2704 | trace_i915_gem_object_clflush(obj); |
Eric Anholt | cfa16a0 | 2009-05-26 18:46:16 -0700 | [diff] [blame] | 2705 | |
Eric Anholt | 856fa19 | 2009-03-19 14:10:50 -0700 | [diff] [blame] | 2706 | drm_clflush_pages(obj_priv->pages, obj->size / PAGE_SIZE); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2707 | } |
| 2708 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2709 | /** Flushes any GPU write domain for the object if it's dirty. */ |
| 2710 | static void |
| 2711 | i915_gem_object_flush_gpu_write_domain(struct drm_gem_object *obj) |
| 2712 | { |
| 2713 | struct drm_device *dev = obj->dev; |
| 2714 | uint32_t seqno; |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 2715 | uint32_t old_write_domain; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2716 | |
| 2717 | if ((obj->write_domain & I915_GEM_GPU_DOMAINS) == 0) |
| 2718 | return; |
| 2719 | |
| 2720 | /* Queue the GPU write cache flushing we need. */ |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 2721 | old_write_domain = obj->write_domain; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2722 | i915_gem_flush(dev, 0, obj->write_domain); |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 2723 | seqno = i915_add_request(dev, NULL, obj->write_domain); |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2724 | obj->write_domain = 0; |
| 2725 | i915_gem_object_move_to_active(obj, seqno); |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 2726 | |
| 2727 | trace_i915_gem_object_change_domain(obj, |
| 2728 | obj->read_domains, |
| 2729 | old_write_domain); |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2730 | } |
| 2731 | |
| 2732 | /** Flushes the GTT write domain for the object if it's dirty. */ |
| 2733 | static void |
| 2734 | i915_gem_object_flush_gtt_write_domain(struct drm_gem_object *obj) |
| 2735 | { |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 2736 | uint32_t old_write_domain; |
| 2737 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2738 | if (obj->write_domain != I915_GEM_DOMAIN_GTT) |
| 2739 | return; |
| 2740 | |
| 2741 | /* No actual flushing is required for the GTT write domain. Writes |
| 2742 | * to it immediately go to main memory as far as we know, so there's |
| 2743 | * no chipset flush. It also doesn't land in render cache. |
| 2744 | */ |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 2745 | old_write_domain = obj->write_domain; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2746 | obj->write_domain = 0; |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 2747 | |
| 2748 | trace_i915_gem_object_change_domain(obj, |
| 2749 | obj->read_domains, |
| 2750 | old_write_domain); |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2751 | } |
| 2752 | |
| 2753 | /** Flushes the CPU write domain for the object if it's dirty. */ |
| 2754 | static void |
| 2755 | i915_gem_object_flush_cpu_write_domain(struct drm_gem_object *obj) |
| 2756 | { |
| 2757 | struct drm_device *dev = obj->dev; |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 2758 | uint32_t old_write_domain; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2759 | |
| 2760 | if (obj->write_domain != I915_GEM_DOMAIN_CPU) |
| 2761 | return; |
| 2762 | |
| 2763 | i915_gem_clflush_object(obj); |
| 2764 | drm_agp_chipset_flush(dev); |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 2765 | old_write_domain = obj->write_domain; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2766 | obj->write_domain = 0; |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 2767 | |
| 2768 | trace_i915_gem_object_change_domain(obj, |
| 2769 | obj->read_domains, |
| 2770 | old_write_domain); |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2771 | } |
| 2772 | |
Kristian Høgsberg | 6b95a20 | 2009-11-18 11:25:18 -0500 | [diff] [blame] | 2773 | void |
| 2774 | i915_gem_object_flush_write_domain(struct drm_gem_object *obj) |
| 2775 | { |
| 2776 | switch (obj->write_domain) { |
| 2777 | case I915_GEM_DOMAIN_GTT: |
| 2778 | i915_gem_object_flush_gtt_write_domain(obj); |
| 2779 | break; |
| 2780 | case I915_GEM_DOMAIN_CPU: |
| 2781 | i915_gem_object_flush_cpu_write_domain(obj); |
| 2782 | break; |
| 2783 | default: |
| 2784 | i915_gem_object_flush_gpu_write_domain(obj); |
| 2785 | break; |
| 2786 | } |
| 2787 | } |
| 2788 | |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 2789 | /** |
| 2790 | * Moves a single object to the GTT read, and possibly write domain. |
| 2791 | * |
| 2792 | * This function returns when the move is complete, including waiting on |
| 2793 | * flushes to occur. |
| 2794 | */ |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 2795 | int |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 2796 | i915_gem_object_set_to_gtt_domain(struct drm_gem_object *obj, int write) |
| 2797 | { |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 2798 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 2799 | uint32_t old_write_domain, old_read_domains; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2800 | int ret; |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 2801 | |
Eric Anholt | 0235439 | 2008-11-26 13:58:13 -0800 | [diff] [blame] | 2802 | /* Not valid to be called on unbound objects. */ |
| 2803 | if (obj_priv->gtt_space == NULL) |
| 2804 | return -EINVAL; |
| 2805 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2806 | i915_gem_object_flush_gpu_write_domain(obj); |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 2807 | /* Wait on any GPU rendering and flushing to occur. */ |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2808 | ret = i915_gem_object_wait_rendering(obj); |
| 2809 | if (ret != 0) |
| 2810 | return ret; |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 2811 | |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 2812 | old_write_domain = obj->write_domain; |
| 2813 | old_read_domains = obj->read_domains; |
| 2814 | |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 2815 | /* If we're writing through the GTT domain, then CPU and GPU caches |
| 2816 | * will need to be invalidated at next use. |
| 2817 | */ |
| 2818 | if (write) |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2819 | obj->read_domains &= I915_GEM_DOMAIN_GTT; |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 2820 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2821 | i915_gem_object_flush_cpu_write_domain(obj); |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 2822 | |
| 2823 | /* It should now be out of any other write domains, and we can update |
| 2824 | * the domain values for our changes. |
| 2825 | */ |
| 2826 | BUG_ON((obj->write_domain & ~I915_GEM_DOMAIN_GTT) != 0); |
| 2827 | obj->read_domains |= I915_GEM_DOMAIN_GTT; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2828 | if (write) { |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 2829 | obj->write_domain = I915_GEM_DOMAIN_GTT; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2830 | obj_priv->dirty = 1; |
| 2831 | } |
| 2832 | |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 2833 | trace_i915_gem_object_change_domain(obj, |
| 2834 | old_read_domains, |
| 2835 | old_write_domain); |
| 2836 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2837 | return 0; |
| 2838 | } |
| 2839 | |
Zhenyu Wang | b9241ea | 2009-11-25 13:09:39 +0800 | [diff] [blame^] | 2840 | /* |
| 2841 | * Prepare buffer for display plane. Use uninterruptible for possible flush |
| 2842 | * wait, as in modesetting process we're not supposed to be interrupted. |
| 2843 | */ |
| 2844 | int |
| 2845 | i915_gem_object_set_to_display_plane(struct drm_gem_object *obj) |
| 2846 | { |
| 2847 | struct drm_device *dev = obj->dev; |
| 2848 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 2849 | uint32_t old_write_domain, old_read_domains; |
| 2850 | int ret; |
| 2851 | |
| 2852 | /* Not valid to be called on unbound objects. */ |
| 2853 | if (obj_priv->gtt_space == NULL) |
| 2854 | return -EINVAL; |
| 2855 | |
| 2856 | i915_gem_object_flush_gpu_write_domain(obj); |
| 2857 | |
| 2858 | /* Wait on any GPU rendering and flushing to occur. */ |
| 2859 | if (obj_priv->active) { |
| 2860 | #if WATCH_BUF |
| 2861 | DRM_INFO("%s: object %p wait for seqno %08x\n", |
| 2862 | __func__, obj, obj_priv->last_rendering_seqno); |
| 2863 | #endif |
| 2864 | ret = i915_do_wait_request(dev, obj_priv->last_rendering_seqno, 0); |
| 2865 | if (ret != 0) |
| 2866 | return ret; |
| 2867 | } |
| 2868 | |
| 2869 | old_write_domain = obj->write_domain; |
| 2870 | old_read_domains = obj->read_domains; |
| 2871 | |
| 2872 | obj->read_domains &= I915_GEM_DOMAIN_GTT; |
| 2873 | |
| 2874 | i915_gem_object_flush_cpu_write_domain(obj); |
| 2875 | |
| 2876 | /* It should now be out of any other write domains, and we can update |
| 2877 | * the domain values for our changes. |
| 2878 | */ |
| 2879 | BUG_ON((obj->write_domain & ~I915_GEM_DOMAIN_GTT) != 0); |
| 2880 | obj->read_domains |= I915_GEM_DOMAIN_GTT; |
| 2881 | obj->write_domain = I915_GEM_DOMAIN_GTT; |
| 2882 | obj_priv->dirty = 1; |
| 2883 | |
| 2884 | trace_i915_gem_object_change_domain(obj, |
| 2885 | old_read_domains, |
| 2886 | old_write_domain); |
| 2887 | |
| 2888 | return 0; |
| 2889 | } |
| 2890 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2891 | /** |
| 2892 | * Moves a single object to the CPU read, and possibly write domain. |
| 2893 | * |
| 2894 | * This function returns when the move is complete, including waiting on |
| 2895 | * flushes to occur. |
| 2896 | */ |
| 2897 | static int |
| 2898 | i915_gem_object_set_to_cpu_domain(struct drm_gem_object *obj, int write) |
| 2899 | { |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 2900 | uint32_t old_write_domain, old_read_domains; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2901 | int ret; |
| 2902 | |
| 2903 | i915_gem_object_flush_gpu_write_domain(obj); |
| 2904 | /* Wait on any GPU rendering and flushing to occur. */ |
| 2905 | ret = i915_gem_object_wait_rendering(obj); |
| 2906 | if (ret != 0) |
| 2907 | return ret; |
| 2908 | |
| 2909 | i915_gem_object_flush_gtt_write_domain(obj); |
| 2910 | |
| 2911 | /* If we have a partially-valid cache of the object in the CPU, |
| 2912 | * finish invalidating it and free the per-page flags. |
| 2913 | */ |
| 2914 | i915_gem_object_set_to_full_cpu_read_domain(obj); |
| 2915 | |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 2916 | old_write_domain = obj->write_domain; |
| 2917 | old_read_domains = obj->read_domains; |
| 2918 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2919 | /* Flush the CPU cache if it's still invalid. */ |
| 2920 | if ((obj->read_domains & I915_GEM_DOMAIN_CPU) == 0) { |
| 2921 | i915_gem_clflush_object(obj); |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2922 | |
| 2923 | obj->read_domains |= I915_GEM_DOMAIN_CPU; |
| 2924 | } |
| 2925 | |
| 2926 | /* It should now be out of any other write domains, and we can update |
| 2927 | * the domain values for our changes. |
| 2928 | */ |
| 2929 | BUG_ON((obj->write_domain & ~I915_GEM_DOMAIN_CPU) != 0); |
| 2930 | |
| 2931 | /* If we're writing through the CPU, then the GPU read domains will |
| 2932 | * need to be invalidated at next use. |
| 2933 | */ |
| 2934 | if (write) { |
| 2935 | obj->read_domains &= I915_GEM_DOMAIN_CPU; |
| 2936 | obj->write_domain = I915_GEM_DOMAIN_CPU; |
| 2937 | } |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 2938 | |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 2939 | trace_i915_gem_object_change_domain(obj, |
| 2940 | old_read_domains, |
| 2941 | old_write_domain); |
| 2942 | |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 2943 | return 0; |
| 2944 | } |
| 2945 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2946 | /* |
| 2947 | * Set the next domain for the specified object. This |
| 2948 | * may not actually perform the necessary flushing/invaliding though, |
| 2949 | * as that may want to be batched with other set_domain operations |
| 2950 | * |
| 2951 | * This is (we hope) the only really tricky part of gem. The goal |
| 2952 | * is fairly simple -- track which caches hold bits of the object |
| 2953 | * and make sure they remain coherent. A few concrete examples may |
| 2954 | * help to explain how it works. For shorthand, we use the notation |
| 2955 | * (read_domains, write_domain), e.g. (CPU, CPU) to indicate the |
| 2956 | * a pair of read and write domain masks. |
| 2957 | * |
| 2958 | * Case 1: the batch buffer |
| 2959 | * |
| 2960 | * 1. Allocated |
| 2961 | * 2. Written by CPU |
| 2962 | * 3. Mapped to GTT |
| 2963 | * 4. Read by GPU |
| 2964 | * 5. Unmapped from GTT |
| 2965 | * 6. Freed |
| 2966 | * |
| 2967 | * Let's take these a step at a time |
| 2968 | * |
| 2969 | * 1. Allocated |
| 2970 | * Pages allocated from the kernel may still have |
| 2971 | * cache contents, so we set them to (CPU, CPU) always. |
| 2972 | * 2. Written by CPU (using pwrite) |
| 2973 | * The pwrite function calls set_domain (CPU, CPU) and |
| 2974 | * this function does nothing (as nothing changes) |
| 2975 | * 3. Mapped by GTT |
| 2976 | * This function asserts that the object is not |
| 2977 | * currently in any GPU-based read or write domains |
| 2978 | * 4. Read by GPU |
| 2979 | * i915_gem_execbuffer calls set_domain (COMMAND, 0). |
| 2980 | * As write_domain is zero, this function adds in the |
| 2981 | * current read domains (CPU+COMMAND, 0). |
| 2982 | * flush_domains is set to CPU. |
| 2983 | * invalidate_domains is set to COMMAND |
| 2984 | * clflush is run to get data out of the CPU caches |
| 2985 | * then i915_dev_set_domain calls i915_gem_flush to |
| 2986 | * emit an MI_FLUSH and drm_agp_chipset_flush |
| 2987 | * 5. Unmapped from GTT |
| 2988 | * i915_gem_object_unbind calls set_domain (CPU, CPU) |
| 2989 | * flush_domains and invalidate_domains end up both zero |
| 2990 | * so no flushing/invalidating happens |
| 2991 | * 6. Freed |
| 2992 | * yay, done |
| 2993 | * |
| 2994 | * Case 2: The shared render buffer |
| 2995 | * |
| 2996 | * 1. Allocated |
| 2997 | * 2. Mapped to GTT |
| 2998 | * 3. Read/written by GPU |
| 2999 | * 4. set_domain to (CPU,CPU) |
| 3000 | * 5. Read/written by CPU |
| 3001 | * 6. Read/written by GPU |
| 3002 | * |
| 3003 | * 1. Allocated |
| 3004 | * Same as last example, (CPU, CPU) |
| 3005 | * 2. Mapped to GTT |
| 3006 | * Nothing changes (assertions find that it is not in the GPU) |
| 3007 | * 3. Read/written by GPU |
| 3008 | * execbuffer calls set_domain (RENDER, RENDER) |
| 3009 | * flush_domains gets CPU |
| 3010 | * invalidate_domains gets GPU |
| 3011 | * clflush (obj) |
| 3012 | * MI_FLUSH and drm_agp_chipset_flush |
| 3013 | * 4. set_domain (CPU, CPU) |
| 3014 | * flush_domains gets GPU |
| 3015 | * invalidate_domains gets CPU |
| 3016 | * wait_rendering (obj) to make sure all drawing is complete. |
| 3017 | * This will include an MI_FLUSH to get the data from GPU |
| 3018 | * to memory |
| 3019 | * clflush (obj) to invalidate the CPU cache |
| 3020 | * Another MI_FLUSH in i915_gem_flush (eliminate this somehow?) |
| 3021 | * 5. Read/written by CPU |
| 3022 | * cache lines are loaded and dirtied |
| 3023 | * 6. Read written by GPU |
| 3024 | * Same as last GPU access |
| 3025 | * |
| 3026 | * Case 3: The constant buffer |
| 3027 | * |
| 3028 | * 1. Allocated |
| 3029 | * 2. Written by CPU |
| 3030 | * 3. Read by GPU |
| 3031 | * 4. Updated (written) by CPU again |
| 3032 | * 5. Read by GPU |
| 3033 | * |
| 3034 | * 1. Allocated |
| 3035 | * (CPU, CPU) |
| 3036 | * 2. Written by CPU |
| 3037 | * (CPU, CPU) |
| 3038 | * 3. Read by GPU |
| 3039 | * (CPU+RENDER, 0) |
| 3040 | * flush_domains = CPU |
| 3041 | * invalidate_domains = RENDER |
| 3042 | * clflush (obj) |
| 3043 | * MI_FLUSH |
| 3044 | * drm_agp_chipset_flush |
| 3045 | * 4. Updated (written) by CPU again |
| 3046 | * (CPU, CPU) |
| 3047 | * flush_domains = 0 (no previous write domain) |
| 3048 | * invalidate_domains = 0 (no new read domains) |
| 3049 | * 5. Read by GPU |
| 3050 | * (CPU+RENDER, 0) |
| 3051 | * flush_domains = CPU |
| 3052 | * invalidate_domains = RENDER |
| 3053 | * clflush (obj) |
| 3054 | * MI_FLUSH |
| 3055 | * drm_agp_chipset_flush |
| 3056 | */ |
Keith Packard | c0d9082 | 2008-11-20 23:11:08 -0800 | [diff] [blame] | 3057 | static void |
Eric Anholt | 8b0e378 | 2009-02-19 14:40:50 -0800 | [diff] [blame] | 3058 | i915_gem_object_set_to_gpu_domain(struct drm_gem_object *obj) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3059 | { |
| 3060 | struct drm_device *dev = obj->dev; |
| 3061 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 3062 | uint32_t invalidate_domains = 0; |
| 3063 | uint32_t flush_domains = 0; |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3064 | uint32_t old_read_domains; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3065 | |
Eric Anholt | 8b0e378 | 2009-02-19 14:40:50 -0800 | [diff] [blame] | 3066 | BUG_ON(obj->pending_read_domains & I915_GEM_DOMAIN_CPU); |
| 3067 | BUG_ON(obj->pending_write_domain == I915_GEM_DOMAIN_CPU); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3068 | |
Jesse Barnes | 652c393 | 2009-08-17 13:31:43 -0700 | [diff] [blame] | 3069 | intel_mark_busy(dev, obj); |
| 3070 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3071 | #if WATCH_BUF |
| 3072 | DRM_INFO("%s: object %p read %08x -> %08x write %08x -> %08x\n", |
| 3073 | __func__, obj, |
Eric Anholt | 8b0e378 | 2009-02-19 14:40:50 -0800 | [diff] [blame] | 3074 | obj->read_domains, obj->pending_read_domains, |
| 3075 | obj->write_domain, obj->pending_write_domain); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3076 | #endif |
| 3077 | /* |
| 3078 | * If the object isn't moving to a new write domain, |
| 3079 | * let the object stay in multiple read domains |
| 3080 | */ |
Eric Anholt | 8b0e378 | 2009-02-19 14:40:50 -0800 | [diff] [blame] | 3081 | if (obj->pending_write_domain == 0) |
| 3082 | obj->pending_read_domains |= obj->read_domains; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3083 | else |
| 3084 | obj_priv->dirty = 1; |
| 3085 | |
| 3086 | /* |
| 3087 | * Flush the current write domain if |
| 3088 | * the new read domains don't match. Invalidate |
| 3089 | * any read domains which differ from the old |
| 3090 | * write domain |
| 3091 | */ |
Eric Anholt | 8b0e378 | 2009-02-19 14:40:50 -0800 | [diff] [blame] | 3092 | if (obj->write_domain && |
| 3093 | obj->write_domain != obj->pending_read_domains) { |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3094 | flush_domains |= obj->write_domain; |
Eric Anholt | 8b0e378 | 2009-02-19 14:40:50 -0800 | [diff] [blame] | 3095 | invalidate_domains |= |
| 3096 | obj->pending_read_domains & ~obj->write_domain; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3097 | } |
| 3098 | /* |
| 3099 | * Invalidate any read caches which may have |
| 3100 | * stale data. That is, any new read domains. |
| 3101 | */ |
Eric Anholt | 8b0e378 | 2009-02-19 14:40:50 -0800 | [diff] [blame] | 3102 | invalidate_domains |= obj->pending_read_domains & ~obj->read_domains; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3103 | if ((flush_domains | invalidate_domains) & I915_GEM_DOMAIN_CPU) { |
| 3104 | #if WATCH_BUF |
| 3105 | DRM_INFO("%s: CPU domain flush %08x invalidate %08x\n", |
| 3106 | __func__, flush_domains, invalidate_domains); |
| 3107 | #endif |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3108 | i915_gem_clflush_object(obj); |
| 3109 | } |
| 3110 | |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3111 | old_read_domains = obj->read_domains; |
| 3112 | |
Eric Anholt | efbeed9 | 2009-02-19 14:54:51 -0800 | [diff] [blame] | 3113 | /* The actual obj->write_domain will be updated with |
| 3114 | * pending_write_domain after we emit the accumulated flush for all |
| 3115 | * of our domain changes in execbuffers (which clears objects' |
| 3116 | * write_domains). So if we have a current write domain that we |
| 3117 | * aren't changing, set pending_write_domain to that. |
| 3118 | */ |
| 3119 | if (flush_domains == 0 && obj->pending_write_domain == 0) |
| 3120 | obj->pending_write_domain = obj->write_domain; |
Eric Anholt | 8b0e378 | 2009-02-19 14:40:50 -0800 | [diff] [blame] | 3121 | obj->read_domains = obj->pending_read_domains; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3122 | |
| 3123 | dev->invalidate_domains |= invalidate_domains; |
| 3124 | dev->flush_domains |= flush_domains; |
| 3125 | #if WATCH_BUF |
| 3126 | DRM_INFO("%s: read %08x write %08x invalidate %08x flush %08x\n", |
| 3127 | __func__, |
| 3128 | obj->read_domains, obj->write_domain, |
| 3129 | dev->invalidate_domains, dev->flush_domains); |
| 3130 | #endif |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3131 | |
| 3132 | trace_i915_gem_object_change_domain(obj, |
| 3133 | old_read_domains, |
| 3134 | obj->write_domain); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3135 | } |
| 3136 | |
| 3137 | /** |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3138 | * Moves the object from a partially CPU read to a full one. |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3139 | * |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3140 | * Note that this only resolves i915_gem_object_set_cpu_read_domain_range(), |
| 3141 | * and doesn't handle transitioning from !(read_domains & I915_GEM_DOMAIN_CPU). |
| 3142 | */ |
| 3143 | static void |
| 3144 | i915_gem_object_set_to_full_cpu_read_domain(struct drm_gem_object *obj) |
| 3145 | { |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3146 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 3147 | |
| 3148 | if (!obj_priv->page_cpu_valid) |
| 3149 | return; |
| 3150 | |
| 3151 | /* If we're partially in the CPU read domain, finish moving it in. |
| 3152 | */ |
| 3153 | if (obj->read_domains & I915_GEM_DOMAIN_CPU) { |
| 3154 | int i; |
| 3155 | |
| 3156 | for (i = 0; i <= (obj->size - 1) / PAGE_SIZE; i++) { |
| 3157 | if (obj_priv->page_cpu_valid[i]) |
| 3158 | continue; |
Eric Anholt | 856fa19 | 2009-03-19 14:10:50 -0700 | [diff] [blame] | 3159 | drm_clflush_pages(obj_priv->pages + i, 1); |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3160 | } |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3161 | } |
| 3162 | |
| 3163 | /* Free the page_cpu_valid mappings which are now stale, whether |
| 3164 | * or not we've got I915_GEM_DOMAIN_CPU. |
| 3165 | */ |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 3166 | kfree(obj_priv->page_cpu_valid); |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3167 | obj_priv->page_cpu_valid = NULL; |
| 3168 | } |
| 3169 | |
| 3170 | /** |
| 3171 | * Set the CPU read domain on a range of the object. |
| 3172 | * |
| 3173 | * The object ends up with I915_GEM_DOMAIN_CPU in its read flags although it's |
| 3174 | * not entirely valid. The page_cpu_valid member of the object flags which |
| 3175 | * pages have been flushed, and will be respected by |
| 3176 | * i915_gem_object_set_to_cpu_domain() if it's called on to get a valid mapping |
| 3177 | * of the whole object. |
| 3178 | * |
| 3179 | * This function returns when the move is complete, including waiting on |
| 3180 | * flushes to occur. |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3181 | */ |
| 3182 | static int |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3183 | i915_gem_object_set_cpu_read_domain_range(struct drm_gem_object *obj, |
| 3184 | uint64_t offset, uint64_t size) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3185 | { |
| 3186 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3187 | uint32_t old_read_domains; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3188 | int i, ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3189 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3190 | if (offset == 0 && size == obj->size) |
| 3191 | return i915_gem_object_set_to_cpu_domain(obj, 0); |
| 3192 | |
| 3193 | i915_gem_object_flush_gpu_write_domain(obj); |
| 3194 | /* Wait on any GPU rendering and flushing to occur. */ |
| 3195 | ret = i915_gem_object_wait_rendering(obj); |
| 3196 | if (ret != 0) |
| 3197 | return ret; |
| 3198 | i915_gem_object_flush_gtt_write_domain(obj); |
| 3199 | |
| 3200 | /* If we're already fully in the CPU read domain, we're done. */ |
| 3201 | if (obj_priv->page_cpu_valid == NULL && |
| 3202 | (obj->read_domains & I915_GEM_DOMAIN_CPU) != 0) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3203 | return 0; |
| 3204 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3205 | /* Otherwise, create/clear the per-page CPU read domain flag if we're |
| 3206 | * newly adding I915_GEM_DOMAIN_CPU |
| 3207 | */ |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3208 | if (obj_priv->page_cpu_valid == NULL) { |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 3209 | obj_priv->page_cpu_valid = kzalloc(obj->size / PAGE_SIZE, |
| 3210 | GFP_KERNEL); |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3211 | if (obj_priv->page_cpu_valid == NULL) |
| 3212 | return -ENOMEM; |
| 3213 | } else if ((obj->read_domains & I915_GEM_DOMAIN_CPU) == 0) |
| 3214 | memset(obj_priv->page_cpu_valid, 0, obj->size / PAGE_SIZE); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3215 | |
| 3216 | /* Flush the cache on any pages that are still invalid from the CPU's |
| 3217 | * perspective. |
| 3218 | */ |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3219 | for (i = offset / PAGE_SIZE; i <= (offset + size - 1) / PAGE_SIZE; |
| 3220 | i++) { |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3221 | if (obj_priv->page_cpu_valid[i]) |
| 3222 | continue; |
| 3223 | |
Eric Anholt | 856fa19 | 2009-03-19 14:10:50 -0700 | [diff] [blame] | 3224 | drm_clflush_pages(obj_priv->pages + i, 1); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3225 | |
| 3226 | obj_priv->page_cpu_valid[i] = 1; |
| 3227 | } |
| 3228 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3229 | /* It should now be out of any other write domains, and we can update |
| 3230 | * the domain values for our changes. |
| 3231 | */ |
| 3232 | BUG_ON((obj->write_domain & ~I915_GEM_DOMAIN_CPU) != 0); |
| 3233 | |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3234 | old_read_domains = obj->read_domains; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3235 | obj->read_domains |= I915_GEM_DOMAIN_CPU; |
| 3236 | |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3237 | trace_i915_gem_object_change_domain(obj, |
| 3238 | old_read_domains, |
| 3239 | obj->write_domain); |
| 3240 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3241 | return 0; |
| 3242 | } |
| 3243 | |
| 3244 | /** |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3245 | * Pin an object to the GTT and evaluate the relocations landing in it. |
| 3246 | */ |
| 3247 | static int |
| 3248 | i915_gem_object_pin_and_relocate(struct drm_gem_object *obj, |
| 3249 | struct drm_file *file_priv, |
Jesse Barnes | 76446ca | 2009-12-17 22:05:42 -0500 | [diff] [blame] | 3250 | struct drm_i915_gem_exec_object2 *entry, |
Eric Anholt | 40a5f0d | 2009-03-12 11:23:52 -0700 | [diff] [blame] | 3251 | struct drm_i915_gem_relocation_entry *relocs) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3252 | { |
| 3253 | struct drm_device *dev = obj->dev; |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 3254 | drm_i915_private_t *dev_priv = dev->dev_private; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3255 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 3256 | int i, ret; |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 3257 | void __iomem *reloc_page; |
Jesse Barnes | 76446ca | 2009-12-17 22:05:42 -0500 | [diff] [blame] | 3258 | bool need_fence; |
| 3259 | |
| 3260 | need_fence = entry->flags & EXEC_OBJECT_NEEDS_FENCE && |
| 3261 | obj_priv->tiling_mode != I915_TILING_NONE; |
| 3262 | |
| 3263 | /* Check fence reg constraints and rebind if necessary */ |
| 3264 | if (need_fence && !i915_obj_fenceable(dev, obj)) |
| 3265 | i915_gem_object_unbind(obj); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3266 | |
| 3267 | /* Choose the GTT offset for our buffer and put it there. */ |
| 3268 | ret = i915_gem_object_pin(obj, (uint32_t) entry->alignment); |
| 3269 | if (ret) |
| 3270 | return ret; |
| 3271 | |
Jesse Barnes | 76446ca | 2009-12-17 22:05:42 -0500 | [diff] [blame] | 3272 | /* |
| 3273 | * Pre-965 chips need a fence register set up in order to |
| 3274 | * properly handle blits to/from tiled surfaces. |
| 3275 | */ |
| 3276 | if (need_fence) { |
| 3277 | ret = i915_gem_object_get_fence_reg(obj); |
| 3278 | if (ret != 0) { |
| 3279 | if (ret != -EBUSY && ret != -ERESTARTSYS) |
| 3280 | DRM_ERROR("Failure to install fence: %d\n", |
| 3281 | ret); |
| 3282 | i915_gem_object_unpin(obj); |
| 3283 | return ret; |
| 3284 | } |
| 3285 | } |
| 3286 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3287 | entry->offset = obj_priv->gtt_offset; |
| 3288 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3289 | /* Apply the relocations, using the GTT aperture to avoid cache |
| 3290 | * flushing requirements. |
| 3291 | */ |
| 3292 | for (i = 0; i < entry->relocation_count; i++) { |
Eric Anholt | 40a5f0d | 2009-03-12 11:23:52 -0700 | [diff] [blame] | 3293 | struct drm_i915_gem_relocation_entry *reloc= &relocs[i]; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3294 | struct drm_gem_object *target_obj; |
| 3295 | struct drm_i915_gem_object *target_obj_priv; |
Eric Anholt | 3043c60 | 2008-10-02 12:24:47 -0700 | [diff] [blame] | 3296 | uint32_t reloc_val, reloc_offset; |
| 3297 | uint32_t __iomem *reloc_entry; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3298 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3299 | target_obj = drm_gem_object_lookup(obj->dev, file_priv, |
Eric Anholt | 40a5f0d | 2009-03-12 11:23:52 -0700 | [diff] [blame] | 3300 | reloc->target_handle); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3301 | if (target_obj == NULL) { |
| 3302 | i915_gem_object_unpin(obj); |
| 3303 | return -EBADF; |
| 3304 | } |
| 3305 | target_obj_priv = target_obj->driver_private; |
| 3306 | |
Chris Wilson | 8542a0b | 2009-09-09 21:15:15 +0100 | [diff] [blame] | 3307 | #if WATCH_RELOC |
| 3308 | DRM_INFO("%s: obj %p offset %08x target %d " |
| 3309 | "read %08x write %08x gtt %08x " |
| 3310 | "presumed %08x delta %08x\n", |
| 3311 | __func__, |
| 3312 | obj, |
| 3313 | (int) reloc->offset, |
| 3314 | (int) reloc->target_handle, |
| 3315 | (int) reloc->read_domains, |
| 3316 | (int) reloc->write_domain, |
| 3317 | (int) target_obj_priv->gtt_offset, |
| 3318 | (int) reloc->presumed_offset, |
| 3319 | reloc->delta); |
| 3320 | #endif |
| 3321 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3322 | /* The target buffer should have appeared before us in the |
| 3323 | * exec_object list, so it should have a GTT space bound by now. |
| 3324 | */ |
| 3325 | if (target_obj_priv->gtt_space == NULL) { |
| 3326 | DRM_ERROR("No GTT space found for object %d\n", |
Eric Anholt | 40a5f0d | 2009-03-12 11:23:52 -0700 | [diff] [blame] | 3327 | reloc->target_handle); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3328 | drm_gem_object_unreference(target_obj); |
| 3329 | i915_gem_object_unpin(obj); |
| 3330 | return -EINVAL; |
| 3331 | } |
| 3332 | |
Chris Wilson | 8542a0b | 2009-09-09 21:15:15 +0100 | [diff] [blame] | 3333 | /* Validate that the target is in a valid r/w GPU domain */ |
| 3334 | if (reloc->write_domain & I915_GEM_DOMAIN_CPU || |
| 3335 | reloc->read_domains & I915_GEM_DOMAIN_CPU) { |
| 3336 | DRM_ERROR("reloc with read/write CPU domains: " |
| 3337 | "obj %p target %d offset %d " |
| 3338 | "read %08x write %08x", |
| 3339 | obj, reloc->target_handle, |
| 3340 | (int) reloc->offset, |
| 3341 | reloc->read_domains, |
| 3342 | reloc->write_domain); |
| 3343 | drm_gem_object_unreference(target_obj); |
| 3344 | i915_gem_object_unpin(obj); |
| 3345 | return -EINVAL; |
| 3346 | } |
| 3347 | if (reloc->write_domain && target_obj->pending_write_domain && |
| 3348 | reloc->write_domain != target_obj->pending_write_domain) { |
| 3349 | DRM_ERROR("Write domain conflict: " |
| 3350 | "obj %p target %d offset %d " |
| 3351 | "new %08x old %08x\n", |
| 3352 | obj, reloc->target_handle, |
| 3353 | (int) reloc->offset, |
| 3354 | reloc->write_domain, |
| 3355 | target_obj->pending_write_domain); |
| 3356 | drm_gem_object_unreference(target_obj); |
| 3357 | i915_gem_object_unpin(obj); |
| 3358 | return -EINVAL; |
| 3359 | } |
| 3360 | |
| 3361 | target_obj->pending_read_domains |= reloc->read_domains; |
| 3362 | target_obj->pending_write_domain |= reloc->write_domain; |
| 3363 | |
| 3364 | /* If the relocation already has the right value in it, no |
| 3365 | * more work needs to be done. |
| 3366 | */ |
| 3367 | if (target_obj_priv->gtt_offset == reloc->presumed_offset) { |
| 3368 | drm_gem_object_unreference(target_obj); |
| 3369 | continue; |
| 3370 | } |
| 3371 | |
| 3372 | /* Check that the relocation address is valid... */ |
Eric Anholt | 40a5f0d | 2009-03-12 11:23:52 -0700 | [diff] [blame] | 3373 | if (reloc->offset > obj->size - 4) { |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3374 | DRM_ERROR("Relocation beyond object bounds: " |
| 3375 | "obj %p target %d offset %d size %d.\n", |
Eric Anholt | 40a5f0d | 2009-03-12 11:23:52 -0700 | [diff] [blame] | 3376 | obj, reloc->target_handle, |
| 3377 | (int) reloc->offset, (int) obj->size); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3378 | drm_gem_object_unreference(target_obj); |
| 3379 | i915_gem_object_unpin(obj); |
| 3380 | return -EINVAL; |
| 3381 | } |
Eric Anholt | 40a5f0d | 2009-03-12 11:23:52 -0700 | [diff] [blame] | 3382 | if (reloc->offset & 3) { |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3383 | DRM_ERROR("Relocation not 4-byte aligned: " |
| 3384 | "obj %p target %d offset %d.\n", |
Eric Anholt | 40a5f0d | 2009-03-12 11:23:52 -0700 | [diff] [blame] | 3385 | obj, reloc->target_handle, |
| 3386 | (int) reloc->offset); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3387 | drm_gem_object_unreference(target_obj); |
| 3388 | i915_gem_object_unpin(obj); |
| 3389 | return -EINVAL; |
| 3390 | } |
| 3391 | |
Chris Wilson | 8542a0b | 2009-09-09 21:15:15 +0100 | [diff] [blame] | 3392 | /* and points to somewhere within the target object. */ |
Chris Wilson | cd0b9fb | 2009-09-15 23:23:18 +0100 | [diff] [blame] | 3393 | if (reloc->delta >= target_obj->size) { |
| 3394 | DRM_ERROR("Relocation beyond target object bounds: " |
| 3395 | "obj %p target %d delta %d size %d.\n", |
Eric Anholt | 40a5f0d | 2009-03-12 11:23:52 -0700 | [diff] [blame] | 3396 | obj, reloc->target_handle, |
Chris Wilson | cd0b9fb | 2009-09-15 23:23:18 +0100 | [diff] [blame] | 3397 | (int) reloc->delta, (int) target_obj->size); |
Chris Wilson | 491152b | 2009-02-11 14:26:32 +0000 | [diff] [blame] | 3398 | drm_gem_object_unreference(target_obj); |
| 3399 | i915_gem_object_unpin(obj); |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3400 | return -EINVAL; |
| 3401 | } |
| 3402 | |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 3403 | ret = i915_gem_object_set_to_gtt_domain(obj, 1); |
| 3404 | if (ret != 0) { |
| 3405 | drm_gem_object_unreference(target_obj); |
| 3406 | i915_gem_object_unpin(obj); |
| 3407 | return -EINVAL; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3408 | } |
| 3409 | |
| 3410 | /* Map the page containing the relocation we're going to |
| 3411 | * perform. |
| 3412 | */ |
Eric Anholt | 40a5f0d | 2009-03-12 11:23:52 -0700 | [diff] [blame] | 3413 | reloc_offset = obj_priv->gtt_offset + reloc->offset; |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 3414 | reloc_page = io_mapping_map_atomic_wc(dev_priv->mm.gtt_mapping, |
| 3415 | (reloc_offset & |
| 3416 | ~(PAGE_SIZE - 1))); |
Eric Anholt | 3043c60 | 2008-10-02 12:24:47 -0700 | [diff] [blame] | 3417 | reloc_entry = (uint32_t __iomem *)(reloc_page + |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 3418 | (reloc_offset & (PAGE_SIZE - 1))); |
Eric Anholt | 40a5f0d | 2009-03-12 11:23:52 -0700 | [diff] [blame] | 3419 | reloc_val = target_obj_priv->gtt_offset + reloc->delta; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3420 | |
| 3421 | #if WATCH_BUF |
| 3422 | DRM_INFO("Applied relocation: %p@0x%08x %08x -> %08x\n", |
Eric Anholt | 40a5f0d | 2009-03-12 11:23:52 -0700 | [diff] [blame] | 3423 | obj, (unsigned int) reloc->offset, |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3424 | readl(reloc_entry), reloc_val); |
| 3425 | #endif |
| 3426 | writel(reloc_val, reloc_entry); |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 3427 | io_mapping_unmap_atomic(reloc_page); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3428 | |
Eric Anholt | 40a5f0d | 2009-03-12 11:23:52 -0700 | [diff] [blame] | 3429 | /* The updated presumed offset for this entry will be |
| 3430 | * copied back out to the user. |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3431 | */ |
Eric Anholt | 40a5f0d | 2009-03-12 11:23:52 -0700 | [diff] [blame] | 3432 | reloc->presumed_offset = target_obj_priv->gtt_offset; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3433 | |
| 3434 | drm_gem_object_unreference(target_obj); |
| 3435 | } |
| 3436 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3437 | #if WATCH_BUF |
| 3438 | if (0) |
| 3439 | i915_gem_dump_object(obj, 128, __func__, ~0); |
| 3440 | #endif |
| 3441 | return 0; |
| 3442 | } |
| 3443 | |
| 3444 | /** Dispatch a batchbuffer to the ring |
| 3445 | */ |
| 3446 | static int |
| 3447 | i915_dispatch_gem_execbuffer(struct drm_device *dev, |
Jesse Barnes | 76446ca | 2009-12-17 22:05:42 -0500 | [diff] [blame] | 3448 | struct drm_i915_gem_execbuffer2 *exec, |
Eric Anholt | 201361a | 2009-03-11 12:30:04 -0700 | [diff] [blame] | 3449 | struct drm_clip_rect *cliprects, |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3450 | uint64_t exec_offset) |
| 3451 | { |
| 3452 | drm_i915_private_t *dev_priv = dev->dev_private; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3453 | int nbox = exec->num_cliprects; |
| 3454 | int i = 0, count; |
Chris Wilson | 83d6079 | 2009-06-06 09:45:57 +0100 | [diff] [blame] | 3455 | uint32_t exec_start, exec_len; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3456 | RING_LOCALS; |
| 3457 | |
| 3458 | exec_start = (uint32_t) exec_offset + exec->batch_start_offset; |
| 3459 | exec_len = (uint32_t) exec->batch_len; |
| 3460 | |
Chris Wilson | 8f0dc5b | 2009-09-24 00:43:17 +0100 | [diff] [blame] | 3461 | trace_i915_gem_request_submit(dev, dev_priv->mm.next_gem_seqno + 1); |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3462 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3463 | count = nbox ? nbox : 1; |
| 3464 | |
| 3465 | for (i = 0; i < count; i++) { |
| 3466 | if (i < nbox) { |
Eric Anholt | 201361a | 2009-03-11 12:30:04 -0700 | [diff] [blame] | 3467 | int ret = i915_emit_box(dev, cliprects, i, |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3468 | exec->DR1, exec->DR4); |
| 3469 | if (ret) |
| 3470 | return ret; |
| 3471 | } |
| 3472 | |
| 3473 | if (IS_I830(dev) || IS_845G(dev)) { |
| 3474 | BEGIN_LP_RING(4); |
| 3475 | OUT_RING(MI_BATCH_BUFFER); |
| 3476 | OUT_RING(exec_start | MI_BATCH_NON_SECURE); |
| 3477 | OUT_RING(exec_start + exec_len - 4); |
| 3478 | OUT_RING(0); |
| 3479 | ADVANCE_LP_RING(); |
| 3480 | } else { |
| 3481 | BEGIN_LP_RING(2); |
| 3482 | if (IS_I965G(dev)) { |
| 3483 | OUT_RING(MI_BATCH_BUFFER_START | |
| 3484 | (2 << 6) | |
| 3485 | MI_BATCH_NON_SECURE_I965); |
| 3486 | OUT_RING(exec_start); |
| 3487 | } else { |
| 3488 | OUT_RING(MI_BATCH_BUFFER_START | |
| 3489 | (2 << 6)); |
| 3490 | OUT_RING(exec_start | MI_BATCH_NON_SECURE); |
| 3491 | } |
| 3492 | ADVANCE_LP_RING(); |
| 3493 | } |
| 3494 | } |
| 3495 | |
| 3496 | /* XXX breadcrumb */ |
| 3497 | return 0; |
| 3498 | } |
| 3499 | |
| 3500 | /* Throttle our rendering by waiting until the ring has completed our requests |
| 3501 | * emitted over 20 msec ago. |
| 3502 | * |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 3503 | * Note that if we were to use the current jiffies each time around the loop, |
| 3504 | * we wouldn't escape the function with any frames outstanding if the time to |
| 3505 | * render a frame was over 20ms. |
| 3506 | * |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3507 | * This should get us reasonable parallelism between CPU and GPU but also |
| 3508 | * relatively low latency when blocking on a particular request to finish. |
| 3509 | */ |
| 3510 | static int |
| 3511 | i915_gem_ring_throttle(struct drm_device *dev, struct drm_file *file_priv) |
| 3512 | { |
| 3513 | struct drm_i915_file_private *i915_file_priv = file_priv->driver_priv; |
| 3514 | int ret = 0; |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 3515 | unsigned long recent_enough = jiffies - msecs_to_jiffies(20); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3516 | |
| 3517 | mutex_lock(&dev->struct_mutex); |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 3518 | while (!list_empty(&i915_file_priv->mm.request_list)) { |
| 3519 | struct drm_i915_gem_request *request; |
| 3520 | |
| 3521 | request = list_first_entry(&i915_file_priv->mm.request_list, |
| 3522 | struct drm_i915_gem_request, |
| 3523 | client_list); |
| 3524 | |
| 3525 | if (time_after_eq(request->emitted_jiffies, recent_enough)) |
| 3526 | break; |
| 3527 | |
| 3528 | ret = i915_wait_request(dev, request->seqno); |
| 3529 | if (ret != 0) |
| 3530 | break; |
| 3531 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3532 | mutex_unlock(&dev->struct_mutex); |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 3533 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3534 | return ret; |
| 3535 | } |
| 3536 | |
Eric Anholt | 40a5f0d | 2009-03-12 11:23:52 -0700 | [diff] [blame] | 3537 | static int |
Jesse Barnes | 76446ca | 2009-12-17 22:05:42 -0500 | [diff] [blame] | 3538 | i915_gem_get_relocs_from_user(struct drm_i915_gem_exec_object2 *exec_list, |
Eric Anholt | 40a5f0d | 2009-03-12 11:23:52 -0700 | [diff] [blame] | 3539 | uint32_t buffer_count, |
| 3540 | struct drm_i915_gem_relocation_entry **relocs) |
| 3541 | { |
| 3542 | uint32_t reloc_count = 0, reloc_index = 0, i; |
| 3543 | int ret; |
| 3544 | |
| 3545 | *relocs = NULL; |
| 3546 | for (i = 0; i < buffer_count; i++) { |
| 3547 | if (reloc_count + exec_list[i].relocation_count < reloc_count) |
| 3548 | return -EINVAL; |
| 3549 | reloc_count += exec_list[i].relocation_count; |
| 3550 | } |
| 3551 | |
Jesse Barnes | 8e7d2b2 | 2009-05-08 16:13:25 -0700 | [diff] [blame] | 3552 | *relocs = drm_calloc_large(reloc_count, sizeof(**relocs)); |
Jesse Barnes | 76446ca | 2009-12-17 22:05:42 -0500 | [diff] [blame] | 3553 | if (*relocs == NULL) { |
| 3554 | DRM_ERROR("failed to alloc relocs, count %d\n", reloc_count); |
Eric Anholt | 40a5f0d | 2009-03-12 11:23:52 -0700 | [diff] [blame] | 3555 | return -ENOMEM; |
Jesse Barnes | 76446ca | 2009-12-17 22:05:42 -0500 | [diff] [blame] | 3556 | } |
Eric Anholt | 40a5f0d | 2009-03-12 11:23:52 -0700 | [diff] [blame] | 3557 | |
| 3558 | for (i = 0; i < buffer_count; i++) { |
| 3559 | struct drm_i915_gem_relocation_entry __user *user_relocs; |
| 3560 | |
| 3561 | user_relocs = (void __user *)(uintptr_t)exec_list[i].relocs_ptr; |
| 3562 | |
| 3563 | ret = copy_from_user(&(*relocs)[reloc_index], |
| 3564 | user_relocs, |
| 3565 | exec_list[i].relocation_count * |
| 3566 | sizeof(**relocs)); |
| 3567 | if (ret != 0) { |
Jesse Barnes | 8e7d2b2 | 2009-05-08 16:13:25 -0700 | [diff] [blame] | 3568 | drm_free_large(*relocs); |
Eric Anholt | 40a5f0d | 2009-03-12 11:23:52 -0700 | [diff] [blame] | 3569 | *relocs = NULL; |
Florian Mickler | 2bc43b5 | 2009-04-06 22:55:41 +0200 | [diff] [blame] | 3570 | return -EFAULT; |
Eric Anholt | 40a5f0d | 2009-03-12 11:23:52 -0700 | [diff] [blame] | 3571 | } |
| 3572 | |
| 3573 | reloc_index += exec_list[i].relocation_count; |
| 3574 | } |
| 3575 | |
Florian Mickler | 2bc43b5 | 2009-04-06 22:55:41 +0200 | [diff] [blame] | 3576 | return 0; |
Eric Anholt | 40a5f0d | 2009-03-12 11:23:52 -0700 | [diff] [blame] | 3577 | } |
| 3578 | |
| 3579 | static int |
Jesse Barnes | 76446ca | 2009-12-17 22:05:42 -0500 | [diff] [blame] | 3580 | i915_gem_put_relocs_to_user(struct drm_i915_gem_exec_object2 *exec_list, |
Eric Anholt | 40a5f0d | 2009-03-12 11:23:52 -0700 | [diff] [blame] | 3581 | uint32_t buffer_count, |
| 3582 | struct drm_i915_gem_relocation_entry *relocs) |
| 3583 | { |
| 3584 | uint32_t reloc_count = 0, i; |
Florian Mickler | 2bc43b5 | 2009-04-06 22:55:41 +0200 | [diff] [blame] | 3585 | int ret = 0; |
Eric Anholt | 40a5f0d | 2009-03-12 11:23:52 -0700 | [diff] [blame] | 3586 | |
| 3587 | for (i = 0; i < buffer_count; i++) { |
| 3588 | struct drm_i915_gem_relocation_entry __user *user_relocs; |
Florian Mickler | 2bc43b5 | 2009-04-06 22:55:41 +0200 | [diff] [blame] | 3589 | int unwritten; |
Eric Anholt | 40a5f0d | 2009-03-12 11:23:52 -0700 | [diff] [blame] | 3590 | |
| 3591 | user_relocs = (void __user *)(uintptr_t)exec_list[i].relocs_ptr; |
| 3592 | |
Florian Mickler | 2bc43b5 | 2009-04-06 22:55:41 +0200 | [diff] [blame] | 3593 | unwritten = copy_to_user(user_relocs, |
| 3594 | &relocs[reloc_count], |
| 3595 | exec_list[i].relocation_count * |
| 3596 | sizeof(*relocs)); |
| 3597 | |
| 3598 | if (unwritten) { |
| 3599 | ret = -EFAULT; |
| 3600 | goto err; |
Eric Anholt | 40a5f0d | 2009-03-12 11:23:52 -0700 | [diff] [blame] | 3601 | } |
| 3602 | |
| 3603 | reloc_count += exec_list[i].relocation_count; |
| 3604 | } |
| 3605 | |
Florian Mickler | 2bc43b5 | 2009-04-06 22:55:41 +0200 | [diff] [blame] | 3606 | err: |
Jesse Barnes | 8e7d2b2 | 2009-05-08 16:13:25 -0700 | [diff] [blame] | 3607 | drm_free_large(relocs); |
Eric Anholt | 40a5f0d | 2009-03-12 11:23:52 -0700 | [diff] [blame] | 3608 | |
| 3609 | return ret; |
| 3610 | } |
| 3611 | |
Chris Wilson | 83d6079 | 2009-06-06 09:45:57 +0100 | [diff] [blame] | 3612 | static int |
Jesse Barnes | 76446ca | 2009-12-17 22:05:42 -0500 | [diff] [blame] | 3613 | i915_gem_check_execbuffer (struct drm_i915_gem_execbuffer2 *exec, |
Chris Wilson | 83d6079 | 2009-06-06 09:45:57 +0100 | [diff] [blame] | 3614 | uint64_t exec_offset) |
| 3615 | { |
| 3616 | uint32_t exec_start, exec_len; |
| 3617 | |
| 3618 | exec_start = (uint32_t) exec_offset + exec->batch_start_offset; |
| 3619 | exec_len = (uint32_t) exec->batch_len; |
| 3620 | |
| 3621 | if ((exec_start | exec_len) & 0x7) |
| 3622 | return -EINVAL; |
| 3623 | |
| 3624 | if (!exec_start) |
| 3625 | return -EINVAL; |
| 3626 | |
| 3627 | return 0; |
| 3628 | } |
| 3629 | |
Kristian Høgsberg | 6b95a20 | 2009-11-18 11:25:18 -0500 | [diff] [blame] | 3630 | static int |
| 3631 | i915_gem_wait_for_pending_flip(struct drm_device *dev, |
| 3632 | struct drm_gem_object **object_list, |
| 3633 | int count) |
| 3634 | { |
| 3635 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 3636 | struct drm_i915_gem_object *obj_priv; |
| 3637 | DEFINE_WAIT(wait); |
| 3638 | int i, ret = 0; |
| 3639 | |
| 3640 | for (;;) { |
| 3641 | prepare_to_wait(&dev_priv->pending_flip_queue, |
| 3642 | &wait, TASK_INTERRUPTIBLE); |
| 3643 | for (i = 0; i < count; i++) { |
| 3644 | obj_priv = object_list[i]->driver_private; |
| 3645 | if (atomic_read(&obj_priv->pending_flip) > 0) |
| 3646 | break; |
| 3647 | } |
| 3648 | if (i == count) |
| 3649 | break; |
| 3650 | |
| 3651 | if (!signal_pending(current)) { |
| 3652 | mutex_unlock(&dev->struct_mutex); |
| 3653 | schedule(); |
| 3654 | mutex_lock(&dev->struct_mutex); |
| 3655 | continue; |
| 3656 | } |
| 3657 | ret = -ERESTARTSYS; |
| 3658 | break; |
| 3659 | } |
| 3660 | finish_wait(&dev_priv->pending_flip_queue, &wait); |
| 3661 | |
| 3662 | return ret; |
| 3663 | } |
| 3664 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3665 | int |
Jesse Barnes | 76446ca | 2009-12-17 22:05:42 -0500 | [diff] [blame] | 3666 | i915_gem_do_execbuffer(struct drm_device *dev, void *data, |
| 3667 | struct drm_file *file_priv, |
| 3668 | struct drm_i915_gem_execbuffer2 *args, |
| 3669 | struct drm_i915_gem_exec_object2 *exec_list) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3670 | { |
| 3671 | drm_i915_private_t *dev_priv = dev->dev_private; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3672 | struct drm_gem_object **object_list = NULL; |
| 3673 | struct drm_gem_object *batch_obj; |
Kristian Høgsberg | b70d11d | 2009-03-03 14:45:57 -0500 | [diff] [blame] | 3674 | struct drm_i915_gem_object *obj_priv; |
Eric Anholt | 201361a | 2009-03-11 12:30:04 -0700 | [diff] [blame] | 3675 | struct drm_clip_rect *cliprects = NULL; |
Eric Anholt | 40a5f0d | 2009-03-12 11:23:52 -0700 | [diff] [blame] | 3676 | struct drm_i915_gem_relocation_entry *relocs; |
Jesse Barnes | 76446ca | 2009-12-17 22:05:42 -0500 | [diff] [blame] | 3677 | int ret = 0, ret2, i, pinned = 0; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3678 | uint64_t exec_offset; |
Eric Anholt | 40a5f0d | 2009-03-12 11:23:52 -0700 | [diff] [blame] | 3679 | uint32_t seqno, flush_domains, reloc_index; |
Kristian Høgsberg | 6b95a20 | 2009-11-18 11:25:18 -0500 | [diff] [blame] | 3680 | int pin_tries, flips; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3681 | |
| 3682 | #if WATCH_EXEC |
| 3683 | DRM_INFO("buffers_ptr %d buffer_count %d len %08x\n", |
| 3684 | (int) args->buffers_ptr, args->buffer_count, args->batch_len); |
| 3685 | #endif |
| 3686 | |
Eric Anholt | 4f481ed | 2008-09-10 14:22:49 -0700 | [diff] [blame] | 3687 | if (args->buffer_count < 1) { |
| 3688 | DRM_ERROR("execbuf with %d buffers\n", args->buffer_count); |
| 3689 | return -EINVAL; |
| 3690 | } |
Eric Anholt | c8e0f93 | 2009-11-22 03:49:37 +0100 | [diff] [blame] | 3691 | object_list = drm_malloc_ab(sizeof(*object_list), args->buffer_count); |
Jesse Barnes | 76446ca | 2009-12-17 22:05:42 -0500 | [diff] [blame] | 3692 | if (object_list == NULL) { |
| 3693 | DRM_ERROR("Failed to allocate object list for %d buffers\n", |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3694 | args->buffer_count); |
| 3695 | ret = -ENOMEM; |
| 3696 | goto pre_mutex_err; |
| 3697 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3698 | |
Eric Anholt | 201361a | 2009-03-11 12:30:04 -0700 | [diff] [blame] | 3699 | if (args->num_cliprects != 0) { |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 3700 | cliprects = kcalloc(args->num_cliprects, sizeof(*cliprects), |
| 3701 | GFP_KERNEL); |
Eric Anholt | 201361a | 2009-03-11 12:30:04 -0700 | [diff] [blame] | 3702 | if (cliprects == NULL) |
| 3703 | goto pre_mutex_err; |
| 3704 | |
| 3705 | ret = copy_from_user(cliprects, |
| 3706 | (struct drm_clip_rect __user *) |
| 3707 | (uintptr_t) args->cliprects_ptr, |
| 3708 | sizeof(*cliprects) * args->num_cliprects); |
| 3709 | if (ret != 0) { |
| 3710 | DRM_ERROR("copy %d cliprects failed: %d\n", |
| 3711 | args->num_cliprects, ret); |
| 3712 | goto pre_mutex_err; |
| 3713 | } |
| 3714 | } |
| 3715 | |
Eric Anholt | 40a5f0d | 2009-03-12 11:23:52 -0700 | [diff] [blame] | 3716 | ret = i915_gem_get_relocs_from_user(exec_list, args->buffer_count, |
| 3717 | &relocs); |
| 3718 | if (ret != 0) |
| 3719 | goto pre_mutex_err; |
| 3720 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3721 | mutex_lock(&dev->struct_mutex); |
| 3722 | |
| 3723 | i915_verify_inactive(dev, __FILE__, __LINE__); |
| 3724 | |
Ben Gamari | ba1234d | 2009-09-14 17:48:47 -0400 | [diff] [blame] | 3725 | if (atomic_read(&dev_priv->mm.wedged)) { |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3726 | mutex_unlock(&dev->struct_mutex); |
Chris Wilson | a198bc8 | 2009-02-06 16:55:20 +0000 | [diff] [blame] | 3727 | ret = -EIO; |
| 3728 | goto pre_mutex_err; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3729 | } |
| 3730 | |
| 3731 | if (dev_priv->mm.suspended) { |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3732 | mutex_unlock(&dev->struct_mutex); |
Chris Wilson | a198bc8 | 2009-02-06 16:55:20 +0000 | [diff] [blame] | 3733 | ret = -EBUSY; |
| 3734 | goto pre_mutex_err; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3735 | } |
| 3736 | |
Keith Packard | ac94a96 | 2008-11-20 23:30:27 -0800 | [diff] [blame] | 3737 | /* Look up object handles */ |
Kristian Høgsberg | 6b95a20 | 2009-11-18 11:25:18 -0500 | [diff] [blame] | 3738 | flips = 0; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3739 | for (i = 0; i < args->buffer_count; i++) { |
| 3740 | object_list[i] = drm_gem_object_lookup(dev, file_priv, |
| 3741 | exec_list[i].handle); |
| 3742 | if (object_list[i] == NULL) { |
| 3743 | DRM_ERROR("Invalid object handle %d at index %d\n", |
| 3744 | exec_list[i].handle, i); |
| 3745 | ret = -EBADF; |
| 3746 | goto err; |
| 3747 | } |
Kristian Høgsberg | b70d11d | 2009-03-03 14:45:57 -0500 | [diff] [blame] | 3748 | |
| 3749 | obj_priv = object_list[i]->driver_private; |
| 3750 | if (obj_priv->in_execbuffer) { |
| 3751 | DRM_ERROR("Object %p appears more than once in object list\n", |
| 3752 | object_list[i]); |
| 3753 | ret = -EBADF; |
| 3754 | goto err; |
| 3755 | } |
| 3756 | obj_priv->in_execbuffer = true; |
Kristian Høgsberg | 6b95a20 | 2009-11-18 11:25:18 -0500 | [diff] [blame] | 3757 | flips += atomic_read(&obj_priv->pending_flip); |
| 3758 | } |
| 3759 | |
| 3760 | if (flips > 0) { |
| 3761 | ret = i915_gem_wait_for_pending_flip(dev, object_list, |
| 3762 | args->buffer_count); |
| 3763 | if (ret) |
| 3764 | goto err; |
Keith Packard | ac94a96 | 2008-11-20 23:30:27 -0800 | [diff] [blame] | 3765 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3766 | |
Keith Packard | ac94a96 | 2008-11-20 23:30:27 -0800 | [diff] [blame] | 3767 | /* Pin and relocate */ |
| 3768 | for (pin_tries = 0; ; pin_tries++) { |
| 3769 | ret = 0; |
Eric Anholt | 40a5f0d | 2009-03-12 11:23:52 -0700 | [diff] [blame] | 3770 | reloc_index = 0; |
| 3771 | |
Keith Packard | ac94a96 | 2008-11-20 23:30:27 -0800 | [diff] [blame] | 3772 | for (i = 0; i < args->buffer_count; i++) { |
| 3773 | object_list[i]->pending_read_domains = 0; |
| 3774 | object_list[i]->pending_write_domain = 0; |
| 3775 | ret = i915_gem_object_pin_and_relocate(object_list[i], |
| 3776 | file_priv, |
Eric Anholt | 40a5f0d | 2009-03-12 11:23:52 -0700 | [diff] [blame] | 3777 | &exec_list[i], |
| 3778 | &relocs[reloc_index]); |
Keith Packard | ac94a96 | 2008-11-20 23:30:27 -0800 | [diff] [blame] | 3779 | if (ret) |
| 3780 | break; |
| 3781 | pinned = i + 1; |
Eric Anholt | 40a5f0d | 2009-03-12 11:23:52 -0700 | [diff] [blame] | 3782 | reloc_index += exec_list[i].relocation_count; |
Keith Packard | ac94a96 | 2008-11-20 23:30:27 -0800 | [diff] [blame] | 3783 | } |
| 3784 | /* success */ |
| 3785 | if (ret == 0) |
| 3786 | break; |
| 3787 | |
| 3788 | /* error other than GTT full, or we've already tried again */ |
Chris Wilson | 2939e1f | 2009-06-06 09:46:03 +0100 | [diff] [blame] | 3789 | if (ret != -ENOSPC || pin_tries >= 1) { |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 3790 | if (ret != -ERESTARTSYS) { |
| 3791 | unsigned long long total_size = 0; |
| 3792 | for (i = 0; i < args->buffer_count; i++) |
| 3793 | total_size += object_list[i]->size; |
| 3794 | DRM_ERROR("Failed to pin buffer %d of %d, total %llu bytes: %d\n", |
| 3795 | pinned+1, args->buffer_count, |
| 3796 | total_size, ret); |
| 3797 | DRM_ERROR("%d objects [%d pinned], " |
| 3798 | "%d object bytes [%d pinned], " |
| 3799 | "%d/%d gtt bytes\n", |
| 3800 | atomic_read(&dev->object_count), |
| 3801 | atomic_read(&dev->pin_count), |
| 3802 | atomic_read(&dev->object_memory), |
| 3803 | atomic_read(&dev->pin_memory), |
| 3804 | atomic_read(&dev->gtt_memory), |
| 3805 | dev->gtt_total); |
| 3806 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3807 | goto err; |
| 3808 | } |
Keith Packard | ac94a96 | 2008-11-20 23:30:27 -0800 | [diff] [blame] | 3809 | |
| 3810 | /* unpin all of our buffers */ |
| 3811 | for (i = 0; i < pinned; i++) |
| 3812 | i915_gem_object_unpin(object_list[i]); |
Eric Anholt | b117763 | 2008-12-10 10:09:41 -0800 | [diff] [blame] | 3813 | pinned = 0; |
Keith Packard | ac94a96 | 2008-11-20 23:30:27 -0800 | [diff] [blame] | 3814 | |
| 3815 | /* evict everyone we can from the aperture */ |
| 3816 | ret = i915_gem_evict_everything(dev); |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 3817 | if (ret && ret != -ENOSPC) |
Keith Packard | ac94a96 | 2008-11-20 23:30:27 -0800 | [diff] [blame] | 3818 | goto err; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3819 | } |
| 3820 | |
| 3821 | /* Set the pending read domains for the batch buffer to COMMAND */ |
| 3822 | batch_obj = object_list[args->buffer_count-1]; |
Chris Wilson | 5f26a2c | 2009-06-06 09:45:58 +0100 | [diff] [blame] | 3823 | if (batch_obj->pending_write_domain) { |
| 3824 | DRM_ERROR("Attempting to use self-modifying batch buffer\n"); |
| 3825 | ret = -EINVAL; |
| 3826 | goto err; |
| 3827 | } |
| 3828 | batch_obj->pending_read_domains |= I915_GEM_DOMAIN_COMMAND; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3829 | |
Chris Wilson | 83d6079 | 2009-06-06 09:45:57 +0100 | [diff] [blame] | 3830 | /* Sanity check the batch buffer, prior to moving objects */ |
| 3831 | exec_offset = exec_list[args->buffer_count - 1].offset; |
| 3832 | ret = i915_gem_check_execbuffer (args, exec_offset); |
| 3833 | if (ret != 0) { |
| 3834 | DRM_ERROR("execbuf with invalid offset/length\n"); |
| 3835 | goto err; |
| 3836 | } |
| 3837 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3838 | i915_verify_inactive(dev, __FILE__, __LINE__); |
| 3839 | |
Keith Packard | 646f0f6 | 2008-11-20 23:23:03 -0800 | [diff] [blame] | 3840 | /* Zero the global flush/invalidate flags. These |
| 3841 | * will be modified as new domains are computed |
| 3842 | * for each object |
| 3843 | */ |
| 3844 | dev->invalidate_domains = 0; |
| 3845 | dev->flush_domains = 0; |
| 3846 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3847 | for (i = 0; i < args->buffer_count; i++) { |
| 3848 | struct drm_gem_object *obj = object_list[i]; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3849 | |
Keith Packard | 646f0f6 | 2008-11-20 23:23:03 -0800 | [diff] [blame] | 3850 | /* Compute new gpu domains and update invalidate/flush */ |
Eric Anholt | 8b0e378 | 2009-02-19 14:40:50 -0800 | [diff] [blame] | 3851 | i915_gem_object_set_to_gpu_domain(obj); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3852 | } |
| 3853 | |
| 3854 | i915_verify_inactive(dev, __FILE__, __LINE__); |
| 3855 | |
Keith Packard | 646f0f6 | 2008-11-20 23:23:03 -0800 | [diff] [blame] | 3856 | if (dev->invalidate_domains | dev->flush_domains) { |
| 3857 | #if WATCH_EXEC |
| 3858 | DRM_INFO("%s: invalidate_domains %08x flush_domains %08x\n", |
| 3859 | __func__, |
| 3860 | dev->invalidate_domains, |
| 3861 | dev->flush_domains); |
| 3862 | #endif |
| 3863 | i915_gem_flush(dev, |
| 3864 | dev->invalidate_domains, |
| 3865 | dev->flush_domains); |
| 3866 | if (dev->flush_domains) |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 3867 | (void)i915_add_request(dev, file_priv, |
| 3868 | dev->flush_domains); |
Keith Packard | 646f0f6 | 2008-11-20 23:23:03 -0800 | [diff] [blame] | 3869 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3870 | |
Eric Anholt | efbeed9 | 2009-02-19 14:54:51 -0800 | [diff] [blame] | 3871 | for (i = 0; i < args->buffer_count; i++) { |
| 3872 | struct drm_gem_object *obj = object_list[i]; |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3873 | uint32_t old_write_domain = obj->write_domain; |
Eric Anholt | efbeed9 | 2009-02-19 14:54:51 -0800 | [diff] [blame] | 3874 | |
| 3875 | obj->write_domain = obj->pending_write_domain; |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3876 | trace_i915_gem_object_change_domain(obj, |
| 3877 | obj->read_domains, |
| 3878 | old_write_domain); |
Eric Anholt | efbeed9 | 2009-02-19 14:54:51 -0800 | [diff] [blame] | 3879 | } |
| 3880 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3881 | i915_verify_inactive(dev, __FILE__, __LINE__); |
| 3882 | |
| 3883 | #if WATCH_COHERENCY |
| 3884 | for (i = 0; i < args->buffer_count; i++) { |
| 3885 | i915_gem_object_check_coherency(object_list[i], |
| 3886 | exec_list[i].handle); |
| 3887 | } |
| 3888 | #endif |
| 3889 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3890 | #if WATCH_EXEC |
Ben Gamari | 6911a9b | 2009-04-02 11:24:54 -0700 | [diff] [blame] | 3891 | i915_gem_dump_object(batch_obj, |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3892 | args->batch_len, |
| 3893 | __func__, |
| 3894 | ~0); |
| 3895 | #endif |
| 3896 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3897 | /* Exec the batchbuffer */ |
Eric Anholt | 201361a | 2009-03-11 12:30:04 -0700 | [diff] [blame] | 3898 | ret = i915_dispatch_gem_execbuffer(dev, args, cliprects, exec_offset); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3899 | if (ret) { |
| 3900 | DRM_ERROR("dispatch failed %d\n", ret); |
| 3901 | goto err; |
| 3902 | } |
| 3903 | |
| 3904 | /* |
| 3905 | * Ensure that the commands in the batch buffer are |
| 3906 | * finished before the interrupt fires |
| 3907 | */ |
| 3908 | flush_domains = i915_retire_commands(dev); |
| 3909 | |
| 3910 | i915_verify_inactive(dev, __FILE__, __LINE__); |
| 3911 | |
| 3912 | /* |
| 3913 | * Get a seqno representing the execution of the current buffer, |
| 3914 | * which we can wait on. We would like to mitigate these interrupts, |
| 3915 | * likely by only creating seqnos occasionally (so that we have |
| 3916 | * *some* interrupts representing completion of buffers that we can |
| 3917 | * wait on when trying to clear up gtt space). |
| 3918 | */ |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 3919 | seqno = i915_add_request(dev, file_priv, flush_domains); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3920 | BUG_ON(seqno == 0); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3921 | for (i = 0; i < args->buffer_count; i++) { |
| 3922 | struct drm_gem_object *obj = object_list[i]; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3923 | |
Eric Anholt | ce44b0e | 2008-11-06 16:00:31 -0800 | [diff] [blame] | 3924 | i915_gem_object_move_to_active(obj, seqno); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3925 | #if WATCH_LRU |
| 3926 | DRM_INFO("%s: move to exec list %p\n", __func__, obj); |
| 3927 | #endif |
| 3928 | } |
| 3929 | #if WATCH_LRU |
| 3930 | i915_dump_lru(dev, __func__); |
| 3931 | #endif |
| 3932 | |
| 3933 | i915_verify_inactive(dev, __FILE__, __LINE__); |
| 3934 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3935 | err: |
Julia Lawall | aad87df | 2008-12-21 16:28:47 +0100 | [diff] [blame] | 3936 | for (i = 0; i < pinned; i++) |
| 3937 | i915_gem_object_unpin(object_list[i]); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3938 | |
Kristian Høgsberg | b70d11d | 2009-03-03 14:45:57 -0500 | [diff] [blame] | 3939 | for (i = 0; i < args->buffer_count; i++) { |
| 3940 | if (object_list[i]) { |
| 3941 | obj_priv = object_list[i]->driver_private; |
| 3942 | obj_priv->in_execbuffer = false; |
| 3943 | } |
Julia Lawall | aad87df | 2008-12-21 16:28:47 +0100 | [diff] [blame] | 3944 | drm_gem_object_unreference(object_list[i]); |
Kristian Høgsberg | b70d11d | 2009-03-03 14:45:57 -0500 | [diff] [blame] | 3945 | } |
Julia Lawall | aad87df | 2008-12-21 16:28:47 +0100 | [diff] [blame] | 3946 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3947 | mutex_unlock(&dev->struct_mutex); |
| 3948 | |
Eric Anholt | 40a5f0d | 2009-03-12 11:23:52 -0700 | [diff] [blame] | 3949 | /* Copy the updated relocations out regardless of current error |
| 3950 | * state. Failure to update the relocs would mean that the next |
| 3951 | * time userland calls execbuf, it would do so with presumed offset |
| 3952 | * state that didn't match the actual object state. |
| 3953 | */ |
| 3954 | ret2 = i915_gem_put_relocs_to_user(exec_list, args->buffer_count, |
| 3955 | relocs); |
| 3956 | if (ret2 != 0) { |
| 3957 | DRM_ERROR("Failed to copy relocations back out: %d\n", ret2); |
| 3958 | |
| 3959 | if (ret == 0) |
| 3960 | ret = ret2; |
| 3961 | } |
| 3962 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3963 | pre_mutex_err: |
Jesse Barnes | 8e7d2b2 | 2009-05-08 16:13:25 -0700 | [diff] [blame] | 3964 | drm_free_large(object_list); |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 3965 | kfree(cliprects); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3966 | |
| 3967 | return ret; |
| 3968 | } |
| 3969 | |
Jesse Barnes | 76446ca | 2009-12-17 22:05:42 -0500 | [diff] [blame] | 3970 | /* |
| 3971 | * Legacy execbuffer just creates an exec2 list from the original exec object |
| 3972 | * list array and passes it to the real function. |
| 3973 | */ |
| 3974 | int |
| 3975 | i915_gem_execbuffer(struct drm_device *dev, void *data, |
| 3976 | struct drm_file *file_priv) |
| 3977 | { |
| 3978 | struct drm_i915_gem_execbuffer *args = data; |
| 3979 | struct drm_i915_gem_execbuffer2 exec2; |
| 3980 | struct drm_i915_gem_exec_object *exec_list = NULL; |
| 3981 | struct drm_i915_gem_exec_object2 *exec2_list = NULL; |
| 3982 | int ret, i; |
| 3983 | |
| 3984 | #if WATCH_EXEC |
| 3985 | DRM_INFO("buffers_ptr %d buffer_count %d len %08x\n", |
| 3986 | (int) args->buffers_ptr, args->buffer_count, args->batch_len); |
| 3987 | #endif |
| 3988 | |
| 3989 | if (args->buffer_count < 1) { |
| 3990 | DRM_ERROR("execbuf with %d buffers\n", args->buffer_count); |
| 3991 | return -EINVAL; |
| 3992 | } |
| 3993 | |
| 3994 | /* Copy in the exec list from userland */ |
| 3995 | exec_list = drm_malloc_ab(sizeof(*exec_list), args->buffer_count); |
| 3996 | exec2_list = drm_malloc_ab(sizeof(*exec2_list), args->buffer_count); |
| 3997 | if (exec_list == NULL || exec2_list == NULL) { |
| 3998 | DRM_ERROR("Failed to allocate exec list for %d buffers\n", |
| 3999 | args->buffer_count); |
| 4000 | drm_free_large(exec_list); |
| 4001 | drm_free_large(exec2_list); |
| 4002 | return -ENOMEM; |
| 4003 | } |
| 4004 | ret = copy_from_user(exec_list, |
| 4005 | (struct drm_i915_relocation_entry __user *) |
| 4006 | (uintptr_t) args->buffers_ptr, |
| 4007 | sizeof(*exec_list) * args->buffer_count); |
| 4008 | if (ret != 0) { |
| 4009 | DRM_ERROR("copy %d exec entries failed %d\n", |
| 4010 | args->buffer_count, ret); |
| 4011 | drm_free_large(exec_list); |
| 4012 | drm_free_large(exec2_list); |
| 4013 | return -EFAULT; |
| 4014 | } |
| 4015 | |
| 4016 | for (i = 0; i < args->buffer_count; i++) { |
| 4017 | exec2_list[i].handle = exec_list[i].handle; |
| 4018 | exec2_list[i].relocation_count = exec_list[i].relocation_count; |
| 4019 | exec2_list[i].relocs_ptr = exec_list[i].relocs_ptr; |
| 4020 | exec2_list[i].alignment = exec_list[i].alignment; |
| 4021 | exec2_list[i].offset = exec_list[i].offset; |
| 4022 | if (!IS_I965G(dev)) |
| 4023 | exec2_list[i].flags = EXEC_OBJECT_NEEDS_FENCE; |
| 4024 | else |
| 4025 | exec2_list[i].flags = 0; |
| 4026 | } |
| 4027 | |
| 4028 | exec2.buffers_ptr = args->buffers_ptr; |
| 4029 | exec2.buffer_count = args->buffer_count; |
| 4030 | exec2.batch_start_offset = args->batch_start_offset; |
| 4031 | exec2.batch_len = args->batch_len; |
| 4032 | exec2.DR1 = args->DR1; |
| 4033 | exec2.DR4 = args->DR4; |
| 4034 | exec2.num_cliprects = args->num_cliprects; |
| 4035 | exec2.cliprects_ptr = args->cliprects_ptr; |
| 4036 | exec2.flags = 0; |
| 4037 | |
| 4038 | ret = i915_gem_do_execbuffer(dev, data, file_priv, &exec2, exec2_list); |
| 4039 | if (!ret) { |
| 4040 | /* Copy the new buffer offsets back to the user's exec list. */ |
| 4041 | for (i = 0; i < args->buffer_count; i++) |
| 4042 | exec_list[i].offset = exec2_list[i].offset; |
| 4043 | /* ... and back out to userspace */ |
| 4044 | ret = copy_to_user((struct drm_i915_relocation_entry __user *) |
| 4045 | (uintptr_t) args->buffers_ptr, |
| 4046 | exec_list, |
| 4047 | sizeof(*exec_list) * args->buffer_count); |
| 4048 | if (ret) { |
| 4049 | ret = -EFAULT; |
| 4050 | DRM_ERROR("failed to copy %d exec entries " |
| 4051 | "back to user (%d)\n", |
| 4052 | args->buffer_count, ret); |
| 4053 | } |
| 4054 | } else { |
| 4055 | DRM_ERROR("i915_gem_do_execbuffer returns %d\n", ret); |
| 4056 | } |
| 4057 | |
| 4058 | drm_free_large(exec_list); |
| 4059 | drm_free_large(exec2_list); |
| 4060 | return ret; |
| 4061 | } |
| 4062 | |
| 4063 | int |
| 4064 | i915_gem_execbuffer2(struct drm_device *dev, void *data, |
| 4065 | struct drm_file *file_priv) |
| 4066 | { |
| 4067 | struct drm_i915_gem_execbuffer2 *args = data; |
| 4068 | struct drm_i915_gem_exec_object2 *exec2_list = NULL; |
| 4069 | int ret; |
| 4070 | |
| 4071 | #if WATCH_EXEC |
| 4072 | DRM_INFO("buffers_ptr %d buffer_count %d len %08x\n", |
| 4073 | (int) args->buffers_ptr, args->buffer_count, args->batch_len); |
| 4074 | #endif |
| 4075 | |
| 4076 | if (args->buffer_count < 1) { |
| 4077 | DRM_ERROR("execbuf2 with %d buffers\n", args->buffer_count); |
| 4078 | return -EINVAL; |
| 4079 | } |
| 4080 | |
| 4081 | exec2_list = drm_malloc_ab(sizeof(*exec2_list), args->buffer_count); |
| 4082 | if (exec2_list == NULL) { |
| 4083 | DRM_ERROR("Failed to allocate exec list for %d buffers\n", |
| 4084 | args->buffer_count); |
| 4085 | return -ENOMEM; |
| 4086 | } |
| 4087 | ret = copy_from_user(exec2_list, |
| 4088 | (struct drm_i915_relocation_entry __user *) |
| 4089 | (uintptr_t) args->buffers_ptr, |
| 4090 | sizeof(*exec2_list) * args->buffer_count); |
| 4091 | if (ret != 0) { |
| 4092 | DRM_ERROR("copy %d exec entries failed %d\n", |
| 4093 | args->buffer_count, ret); |
| 4094 | drm_free_large(exec2_list); |
| 4095 | return -EFAULT; |
| 4096 | } |
| 4097 | |
| 4098 | ret = i915_gem_do_execbuffer(dev, data, file_priv, args, exec2_list); |
| 4099 | if (!ret) { |
| 4100 | /* Copy the new buffer offsets back to the user's exec list. */ |
| 4101 | ret = copy_to_user((struct drm_i915_relocation_entry __user *) |
| 4102 | (uintptr_t) args->buffers_ptr, |
| 4103 | exec2_list, |
| 4104 | sizeof(*exec2_list) * args->buffer_count); |
| 4105 | if (ret) { |
| 4106 | ret = -EFAULT; |
| 4107 | DRM_ERROR("failed to copy %d exec entries " |
| 4108 | "back to user (%d)\n", |
| 4109 | args->buffer_count, ret); |
| 4110 | } |
| 4111 | } |
| 4112 | |
| 4113 | drm_free_large(exec2_list); |
| 4114 | return ret; |
| 4115 | } |
| 4116 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4117 | int |
| 4118 | i915_gem_object_pin(struct drm_gem_object *obj, uint32_t alignment) |
| 4119 | { |
| 4120 | struct drm_device *dev = obj->dev; |
| 4121 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 4122 | int ret; |
| 4123 | |
| 4124 | i915_verify_inactive(dev, __FILE__, __LINE__); |
| 4125 | if (obj_priv->gtt_space == NULL) { |
| 4126 | ret = i915_gem_object_bind_to_gtt(obj, alignment); |
Chris Wilson | 9731129 | 2009-09-21 00:22:34 +0100 | [diff] [blame] | 4127 | if (ret) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4128 | return ret; |
Chris Wilson | 22c344e | 2009-02-11 14:26:45 +0000 | [diff] [blame] | 4129 | } |
Jesse Barnes | 76446ca | 2009-12-17 22:05:42 -0500 | [diff] [blame] | 4130 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4131 | obj_priv->pin_count++; |
| 4132 | |
| 4133 | /* If the object is not active and not pending a flush, |
| 4134 | * remove it from the inactive list |
| 4135 | */ |
| 4136 | if (obj_priv->pin_count == 1) { |
| 4137 | atomic_inc(&dev->pin_count); |
| 4138 | atomic_add(obj->size, &dev->pin_memory); |
| 4139 | if (!obj_priv->active && |
Chris Wilson | 21d509e | 2009-06-06 09:46:02 +0100 | [diff] [blame] | 4140 | (obj->write_domain & I915_GEM_GPU_DOMAINS) == 0 && |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4141 | !list_empty(&obj_priv->list)) |
| 4142 | list_del_init(&obj_priv->list); |
| 4143 | } |
| 4144 | i915_verify_inactive(dev, __FILE__, __LINE__); |
| 4145 | |
| 4146 | return 0; |
| 4147 | } |
| 4148 | |
| 4149 | void |
| 4150 | i915_gem_object_unpin(struct drm_gem_object *obj) |
| 4151 | { |
| 4152 | struct drm_device *dev = obj->dev; |
| 4153 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 4154 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 4155 | |
| 4156 | i915_verify_inactive(dev, __FILE__, __LINE__); |
| 4157 | obj_priv->pin_count--; |
| 4158 | BUG_ON(obj_priv->pin_count < 0); |
| 4159 | BUG_ON(obj_priv->gtt_space == NULL); |
| 4160 | |
| 4161 | /* If the object is no longer pinned, and is |
| 4162 | * neither active nor being flushed, then stick it on |
| 4163 | * the inactive list |
| 4164 | */ |
| 4165 | if (obj_priv->pin_count == 0) { |
| 4166 | if (!obj_priv->active && |
Chris Wilson | 21d509e | 2009-06-06 09:46:02 +0100 | [diff] [blame] | 4167 | (obj->write_domain & I915_GEM_GPU_DOMAINS) == 0) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4168 | list_move_tail(&obj_priv->list, |
| 4169 | &dev_priv->mm.inactive_list); |
| 4170 | atomic_dec(&dev->pin_count); |
| 4171 | atomic_sub(obj->size, &dev->pin_memory); |
| 4172 | } |
| 4173 | i915_verify_inactive(dev, __FILE__, __LINE__); |
| 4174 | } |
| 4175 | |
| 4176 | int |
| 4177 | i915_gem_pin_ioctl(struct drm_device *dev, void *data, |
| 4178 | struct drm_file *file_priv) |
| 4179 | { |
| 4180 | struct drm_i915_gem_pin *args = data; |
| 4181 | struct drm_gem_object *obj; |
| 4182 | struct drm_i915_gem_object *obj_priv; |
| 4183 | int ret; |
| 4184 | |
| 4185 | mutex_lock(&dev->struct_mutex); |
| 4186 | |
| 4187 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
| 4188 | if (obj == NULL) { |
| 4189 | DRM_ERROR("Bad handle in i915_gem_pin_ioctl(): %d\n", |
| 4190 | args->handle); |
| 4191 | mutex_unlock(&dev->struct_mutex); |
| 4192 | return -EBADF; |
| 4193 | } |
| 4194 | obj_priv = obj->driver_private; |
| 4195 | |
Chris Wilson | bb6baf7 | 2009-09-22 14:24:13 +0100 | [diff] [blame] | 4196 | if (obj_priv->madv != I915_MADV_WILLNEED) { |
| 4197 | DRM_ERROR("Attempting to pin a purgeable buffer\n"); |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 4198 | drm_gem_object_unreference(obj); |
| 4199 | mutex_unlock(&dev->struct_mutex); |
| 4200 | return -EINVAL; |
| 4201 | } |
| 4202 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 4203 | if (obj_priv->pin_filp != NULL && obj_priv->pin_filp != file_priv) { |
| 4204 | DRM_ERROR("Already pinned in i915_gem_pin_ioctl(): %d\n", |
| 4205 | args->handle); |
Chris Wilson | 96dec61 | 2009-02-08 19:08:04 +0000 | [diff] [blame] | 4206 | drm_gem_object_unreference(obj); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4207 | mutex_unlock(&dev->struct_mutex); |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 4208 | return -EINVAL; |
| 4209 | } |
| 4210 | |
| 4211 | obj_priv->user_pin_count++; |
| 4212 | obj_priv->pin_filp = file_priv; |
| 4213 | if (obj_priv->user_pin_count == 1) { |
| 4214 | ret = i915_gem_object_pin(obj, args->alignment); |
| 4215 | if (ret != 0) { |
| 4216 | drm_gem_object_unreference(obj); |
| 4217 | mutex_unlock(&dev->struct_mutex); |
| 4218 | return ret; |
| 4219 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4220 | } |
| 4221 | |
| 4222 | /* XXX - flush the CPU caches for pinned objects |
| 4223 | * as the X server doesn't manage domains yet |
| 4224 | */ |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 4225 | i915_gem_object_flush_cpu_write_domain(obj); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4226 | args->offset = obj_priv->gtt_offset; |
| 4227 | drm_gem_object_unreference(obj); |
| 4228 | mutex_unlock(&dev->struct_mutex); |
| 4229 | |
| 4230 | return 0; |
| 4231 | } |
| 4232 | |
| 4233 | int |
| 4234 | i915_gem_unpin_ioctl(struct drm_device *dev, void *data, |
| 4235 | struct drm_file *file_priv) |
| 4236 | { |
| 4237 | struct drm_i915_gem_pin *args = data; |
| 4238 | struct drm_gem_object *obj; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 4239 | struct drm_i915_gem_object *obj_priv; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4240 | |
| 4241 | mutex_lock(&dev->struct_mutex); |
| 4242 | |
| 4243 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
| 4244 | if (obj == NULL) { |
| 4245 | DRM_ERROR("Bad handle in i915_gem_unpin_ioctl(): %d\n", |
| 4246 | args->handle); |
| 4247 | mutex_unlock(&dev->struct_mutex); |
| 4248 | return -EBADF; |
| 4249 | } |
| 4250 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 4251 | obj_priv = obj->driver_private; |
| 4252 | if (obj_priv->pin_filp != file_priv) { |
| 4253 | DRM_ERROR("Not pinned by caller in i915_gem_pin_ioctl(): %d\n", |
| 4254 | args->handle); |
| 4255 | drm_gem_object_unreference(obj); |
| 4256 | mutex_unlock(&dev->struct_mutex); |
| 4257 | return -EINVAL; |
| 4258 | } |
| 4259 | obj_priv->user_pin_count--; |
| 4260 | if (obj_priv->user_pin_count == 0) { |
| 4261 | obj_priv->pin_filp = NULL; |
| 4262 | i915_gem_object_unpin(obj); |
| 4263 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4264 | |
| 4265 | drm_gem_object_unreference(obj); |
| 4266 | mutex_unlock(&dev->struct_mutex); |
| 4267 | return 0; |
| 4268 | } |
| 4269 | |
| 4270 | int |
| 4271 | i915_gem_busy_ioctl(struct drm_device *dev, void *data, |
| 4272 | struct drm_file *file_priv) |
| 4273 | { |
| 4274 | struct drm_i915_gem_busy *args = data; |
| 4275 | struct drm_gem_object *obj; |
| 4276 | struct drm_i915_gem_object *obj_priv; |
| 4277 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4278 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
| 4279 | if (obj == NULL) { |
| 4280 | DRM_ERROR("Bad handle in i915_gem_busy_ioctl(): %d\n", |
| 4281 | args->handle); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4282 | return -EBADF; |
| 4283 | } |
| 4284 | |
Chris Wilson | b1ce786 | 2009-06-06 09:46:00 +0100 | [diff] [blame] | 4285 | mutex_lock(&dev->struct_mutex); |
Eric Anholt | f21289b | 2009-02-18 09:44:56 -0800 | [diff] [blame] | 4286 | /* Update the active list for the hardware's current position. |
| 4287 | * Otherwise this only updates on a delayed timer or when irqs are |
| 4288 | * actually unmasked, and our working set ends up being larger than |
| 4289 | * required. |
| 4290 | */ |
| 4291 | i915_gem_retire_requests(dev); |
| 4292 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4293 | obj_priv = obj->driver_private; |
Eric Anholt | c4de0a5 | 2008-12-14 19:05:04 -0800 | [diff] [blame] | 4294 | /* Don't count being on the flushing list against the object being |
| 4295 | * done. Otherwise, a buffer left on the flushing list but not getting |
| 4296 | * flushed (because nobody's flushing that domain) won't ever return |
| 4297 | * unbusy and get reused by libdrm's bo cache. The other expected |
| 4298 | * consumer of this interface, OpenGL's occlusion queries, also specs |
| 4299 | * that the objects get unbusy "eventually" without any interference. |
| 4300 | */ |
| 4301 | args->busy = obj_priv->active && obj_priv->last_rendering_seqno != 0; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4302 | |
| 4303 | drm_gem_object_unreference(obj); |
| 4304 | mutex_unlock(&dev->struct_mutex); |
| 4305 | return 0; |
| 4306 | } |
| 4307 | |
| 4308 | int |
| 4309 | i915_gem_throttle_ioctl(struct drm_device *dev, void *data, |
| 4310 | struct drm_file *file_priv) |
| 4311 | { |
| 4312 | return i915_gem_ring_throttle(dev, file_priv); |
| 4313 | } |
| 4314 | |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 4315 | int |
| 4316 | i915_gem_madvise_ioctl(struct drm_device *dev, void *data, |
| 4317 | struct drm_file *file_priv) |
| 4318 | { |
| 4319 | struct drm_i915_gem_madvise *args = data; |
| 4320 | struct drm_gem_object *obj; |
| 4321 | struct drm_i915_gem_object *obj_priv; |
| 4322 | |
| 4323 | switch (args->madv) { |
| 4324 | case I915_MADV_DONTNEED: |
| 4325 | case I915_MADV_WILLNEED: |
| 4326 | break; |
| 4327 | default: |
| 4328 | return -EINVAL; |
| 4329 | } |
| 4330 | |
| 4331 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
| 4332 | if (obj == NULL) { |
| 4333 | DRM_ERROR("Bad handle in i915_gem_madvise_ioctl(): %d\n", |
| 4334 | args->handle); |
| 4335 | return -EBADF; |
| 4336 | } |
| 4337 | |
| 4338 | mutex_lock(&dev->struct_mutex); |
| 4339 | obj_priv = obj->driver_private; |
| 4340 | |
| 4341 | if (obj_priv->pin_count) { |
| 4342 | drm_gem_object_unreference(obj); |
| 4343 | mutex_unlock(&dev->struct_mutex); |
| 4344 | |
| 4345 | DRM_ERROR("Attempted i915_gem_madvise_ioctl() on a pinned object\n"); |
| 4346 | return -EINVAL; |
| 4347 | } |
| 4348 | |
Chris Wilson | bb6baf7 | 2009-09-22 14:24:13 +0100 | [diff] [blame] | 4349 | if (obj_priv->madv != __I915_MADV_PURGED) |
| 4350 | obj_priv->madv = args->madv; |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 4351 | |
Chris Wilson | 2d7ef39 | 2009-09-20 23:13:10 +0100 | [diff] [blame] | 4352 | /* if the object is no longer bound, discard its backing storage */ |
| 4353 | if (i915_gem_object_is_purgeable(obj_priv) && |
| 4354 | obj_priv->gtt_space == NULL) |
| 4355 | i915_gem_object_truncate(obj); |
| 4356 | |
Chris Wilson | bb6baf7 | 2009-09-22 14:24:13 +0100 | [diff] [blame] | 4357 | args->retained = obj_priv->madv != __I915_MADV_PURGED; |
| 4358 | |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 4359 | drm_gem_object_unreference(obj); |
| 4360 | mutex_unlock(&dev->struct_mutex); |
| 4361 | |
| 4362 | return 0; |
| 4363 | } |
| 4364 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4365 | int i915_gem_init_object(struct drm_gem_object *obj) |
| 4366 | { |
| 4367 | struct drm_i915_gem_object *obj_priv; |
| 4368 | |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 4369 | obj_priv = kzalloc(sizeof(*obj_priv), GFP_KERNEL); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4370 | if (obj_priv == NULL) |
| 4371 | return -ENOMEM; |
| 4372 | |
| 4373 | /* |
| 4374 | * We've just allocated pages from the kernel, |
| 4375 | * so they've just been written by the CPU with |
| 4376 | * zeros. They'll need to be clflushed before we |
| 4377 | * use them with the GPU. |
| 4378 | */ |
| 4379 | obj->write_domain = I915_GEM_DOMAIN_CPU; |
| 4380 | obj->read_domains = I915_GEM_DOMAIN_CPU; |
| 4381 | |
Keith Packard | ba1eb1d | 2008-10-14 19:55:10 -0700 | [diff] [blame] | 4382 | obj_priv->agp_type = AGP_USER_MEMORY; |
| 4383 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4384 | obj->driver_private = obj_priv; |
| 4385 | obj_priv->obj = obj; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 4386 | obj_priv->fence_reg = I915_FENCE_REG_NONE; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4387 | INIT_LIST_HEAD(&obj_priv->list); |
Eric Anholt | a09ba7f | 2009-08-29 12:49:51 -0700 | [diff] [blame] | 4388 | INIT_LIST_HEAD(&obj_priv->fence_list); |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 4389 | obj_priv->madv = I915_MADV_WILLNEED; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 4390 | |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 4391 | trace_i915_gem_object_create(obj); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4392 | |
| 4393 | return 0; |
| 4394 | } |
| 4395 | |
| 4396 | void i915_gem_free_object(struct drm_gem_object *obj) |
| 4397 | { |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 4398 | struct drm_device *dev = obj->dev; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4399 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 4400 | |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 4401 | trace_i915_gem_object_destroy(obj); |
| 4402 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4403 | while (obj_priv->pin_count > 0) |
| 4404 | i915_gem_object_unpin(obj); |
| 4405 | |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4406 | if (obj_priv->phys_obj) |
| 4407 | i915_gem_detach_phys_object(dev, obj); |
| 4408 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4409 | i915_gem_object_unbind(obj); |
| 4410 | |
Chris Wilson | 7e61615 | 2009-09-10 08:53:04 +0100 | [diff] [blame] | 4411 | if (obj_priv->mmap_offset) |
| 4412 | i915_gem_free_mmap_offset(obj); |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 4413 | |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 4414 | kfree(obj_priv->page_cpu_valid); |
Eric Anholt | 280b713 | 2009-03-12 16:56:27 -0700 | [diff] [blame] | 4415 | kfree(obj_priv->bit_17); |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 4416 | kfree(obj->driver_private); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4417 | } |
| 4418 | |
Chris Wilson | ab5ee57 | 2009-09-20 19:25:47 +0100 | [diff] [blame] | 4419 | /** Unbinds all inactive objects. */ |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4420 | static int |
Chris Wilson | ab5ee57 | 2009-09-20 19:25:47 +0100 | [diff] [blame] | 4421 | i915_gem_evict_from_inactive_list(struct drm_device *dev) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4422 | { |
Chris Wilson | ab5ee57 | 2009-09-20 19:25:47 +0100 | [diff] [blame] | 4423 | drm_i915_private_t *dev_priv = dev->dev_private; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4424 | |
Chris Wilson | ab5ee57 | 2009-09-20 19:25:47 +0100 | [diff] [blame] | 4425 | while (!list_empty(&dev_priv->mm.inactive_list)) { |
| 4426 | struct drm_gem_object *obj; |
| 4427 | int ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4428 | |
Chris Wilson | ab5ee57 | 2009-09-20 19:25:47 +0100 | [diff] [blame] | 4429 | obj = list_first_entry(&dev_priv->mm.inactive_list, |
| 4430 | struct drm_i915_gem_object, |
| 4431 | list)->obj; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4432 | |
| 4433 | ret = i915_gem_object_unbind(obj); |
| 4434 | if (ret != 0) { |
Chris Wilson | ab5ee57 | 2009-09-20 19:25:47 +0100 | [diff] [blame] | 4435 | DRM_ERROR("Error unbinding object: %d\n", ret); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4436 | return ret; |
| 4437 | } |
| 4438 | } |
| 4439 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4440 | return 0; |
| 4441 | } |
| 4442 | |
Jesse Barnes | 5669fca | 2009-02-17 15:13:31 -0800 | [diff] [blame] | 4443 | int |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4444 | i915_gem_idle(struct drm_device *dev) |
| 4445 | { |
| 4446 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 4447 | uint32_t seqno, cur_seqno, last_seqno; |
| 4448 | int stuck, ret; |
| 4449 | |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 4450 | mutex_lock(&dev->struct_mutex); |
| 4451 | |
| 4452 | if (dev_priv->mm.suspended || dev_priv->ring.ring_obj == NULL) { |
| 4453 | mutex_unlock(&dev->struct_mutex); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4454 | return 0; |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 4455 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4456 | |
| 4457 | /* Hack! Don't let anybody do execbuf while we don't control the chip. |
| 4458 | * We need to replace this with a semaphore, or something. |
| 4459 | */ |
| 4460 | dev_priv->mm.suspended = 1; |
Ben Gamari | f65d942 | 2009-09-14 17:48:44 -0400 | [diff] [blame] | 4461 | del_timer(&dev_priv->hangcheck_timer); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4462 | |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 4463 | /* Cancel the retire work handler, wait for it to finish if running |
| 4464 | */ |
| 4465 | mutex_unlock(&dev->struct_mutex); |
| 4466 | cancel_delayed_work_sync(&dev_priv->mm.retire_work); |
| 4467 | mutex_lock(&dev->struct_mutex); |
| 4468 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4469 | i915_kernel_lost_context(dev); |
| 4470 | |
| 4471 | /* Flush the GPU along with all non-CPU write domains |
| 4472 | */ |
Chris Wilson | 21d509e | 2009-06-06 09:46:02 +0100 | [diff] [blame] | 4473 | i915_gem_flush(dev, I915_GEM_GPU_DOMAINS, I915_GEM_GPU_DOMAINS); |
| 4474 | seqno = i915_add_request(dev, NULL, I915_GEM_GPU_DOMAINS); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4475 | |
| 4476 | if (seqno == 0) { |
| 4477 | mutex_unlock(&dev->struct_mutex); |
| 4478 | return -ENOMEM; |
| 4479 | } |
| 4480 | |
| 4481 | dev_priv->mm.waiting_gem_seqno = seqno; |
| 4482 | last_seqno = 0; |
| 4483 | stuck = 0; |
| 4484 | for (;;) { |
| 4485 | cur_seqno = i915_get_gem_seqno(dev); |
| 4486 | if (i915_seqno_passed(cur_seqno, seqno)) |
| 4487 | break; |
| 4488 | if (last_seqno == cur_seqno) { |
| 4489 | if (stuck++ > 100) { |
| 4490 | DRM_ERROR("hardware wedged\n"); |
Ben Gamari | ba1234d | 2009-09-14 17:48:47 -0400 | [diff] [blame] | 4491 | atomic_set(&dev_priv->mm.wedged, 1); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4492 | DRM_WAKEUP(&dev_priv->irq_queue); |
| 4493 | break; |
| 4494 | } |
| 4495 | } |
| 4496 | msleep(10); |
| 4497 | last_seqno = cur_seqno; |
| 4498 | } |
| 4499 | dev_priv->mm.waiting_gem_seqno = 0; |
| 4500 | |
| 4501 | i915_gem_retire_requests(dev); |
| 4502 | |
Carl Worth | 5e118f4 | 2009-03-20 11:54:25 -0700 | [diff] [blame] | 4503 | spin_lock(&dev_priv->mm.active_list_lock); |
Ben Gamari | ba1234d | 2009-09-14 17:48:47 -0400 | [diff] [blame] | 4504 | if (!atomic_read(&dev_priv->mm.wedged)) { |
Eric Anholt | 28dfe52 | 2008-11-13 15:00:55 -0800 | [diff] [blame] | 4505 | /* Active and flushing should now be empty as we've |
| 4506 | * waited for a sequence higher than any pending execbuffer |
| 4507 | */ |
| 4508 | WARN_ON(!list_empty(&dev_priv->mm.active_list)); |
| 4509 | WARN_ON(!list_empty(&dev_priv->mm.flushing_list)); |
| 4510 | /* Request should now be empty as we've also waited |
| 4511 | * for the last request in the list |
| 4512 | */ |
| 4513 | WARN_ON(!list_empty(&dev_priv->mm.request_list)); |
| 4514 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4515 | |
Eric Anholt | 28dfe52 | 2008-11-13 15:00:55 -0800 | [diff] [blame] | 4516 | /* Empty the active and flushing lists to inactive. If there's |
| 4517 | * anything left at this point, it means that we're wedged and |
| 4518 | * nothing good's going to happen by leaving them there. So strip |
| 4519 | * the GPU domains and just stuff them onto inactive. |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4520 | */ |
Eric Anholt | 28dfe52 | 2008-11-13 15:00:55 -0800 | [diff] [blame] | 4521 | while (!list_empty(&dev_priv->mm.active_list)) { |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 4522 | struct drm_gem_object *obj; |
| 4523 | uint32_t old_write_domain; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4524 | |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 4525 | obj = list_first_entry(&dev_priv->mm.active_list, |
| 4526 | struct drm_i915_gem_object, |
| 4527 | list)->obj; |
| 4528 | old_write_domain = obj->write_domain; |
| 4529 | obj->write_domain &= ~I915_GEM_GPU_DOMAINS; |
| 4530 | i915_gem_object_move_to_inactive(obj); |
| 4531 | |
| 4532 | trace_i915_gem_object_change_domain(obj, |
| 4533 | obj->read_domains, |
| 4534 | old_write_domain); |
Eric Anholt | 28dfe52 | 2008-11-13 15:00:55 -0800 | [diff] [blame] | 4535 | } |
Carl Worth | 5e118f4 | 2009-03-20 11:54:25 -0700 | [diff] [blame] | 4536 | spin_unlock(&dev_priv->mm.active_list_lock); |
Eric Anholt | 28dfe52 | 2008-11-13 15:00:55 -0800 | [diff] [blame] | 4537 | |
| 4538 | while (!list_empty(&dev_priv->mm.flushing_list)) { |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 4539 | struct drm_gem_object *obj; |
| 4540 | uint32_t old_write_domain; |
Eric Anholt | 28dfe52 | 2008-11-13 15:00:55 -0800 | [diff] [blame] | 4541 | |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 4542 | obj = list_first_entry(&dev_priv->mm.flushing_list, |
| 4543 | struct drm_i915_gem_object, |
| 4544 | list)->obj; |
| 4545 | old_write_domain = obj->write_domain; |
| 4546 | obj->write_domain &= ~I915_GEM_GPU_DOMAINS; |
| 4547 | i915_gem_object_move_to_inactive(obj); |
| 4548 | |
| 4549 | trace_i915_gem_object_change_domain(obj, |
| 4550 | obj->read_domains, |
| 4551 | old_write_domain); |
Eric Anholt | 28dfe52 | 2008-11-13 15:00:55 -0800 | [diff] [blame] | 4552 | } |
| 4553 | |
| 4554 | |
| 4555 | /* Move all inactive buffers out of the GTT. */ |
Chris Wilson | ab5ee57 | 2009-09-20 19:25:47 +0100 | [diff] [blame] | 4556 | ret = i915_gem_evict_from_inactive_list(dev); |
Eric Anholt | 28dfe52 | 2008-11-13 15:00:55 -0800 | [diff] [blame] | 4557 | WARN_ON(!list_empty(&dev_priv->mm.inactive_list)); |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 4558 | if (ret) { |
| 4559 | mutex_unlock(&dev->struct_mutex); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4560 | return ret; |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 4561 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4562 | |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 4563 | i915_gem_cleanup_ringbuffer(dev); |
| 4564 | mutex_unlock(&dev->struct_mutex); |
| 4565 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4566 | return 0; |
| 4567 | } |
| 4568 | |
| 4569 | static int |
| 4570 | i915_gem_init_hws(struct drm_device *dev) |
| 4571 | { |
| 4572 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 4573 | struct drm_gem_object *obj; |
| 4574 | struct drm_i915_gem_object *obj_priv; |
| 4575 | int ret; |
| 4576 | |
| 4577 | /* If we need a physical address for the status page, it's already |
| 4578 | * initialized at driver load time. |
| 4579 | */ |
| 4580 | if (!I915_NEED_GFX_HWS(dev)) |
| 4581 | return 0; |
| 4582 | |
| 4583 | obj = drm_gem_object_alloc(dev, 4096); |
| 4584 | if (obj == NULL) { |
| 4585 | DRM_ERROR("Failed to allocate status page\n"); |
| 4586 | return -ENOMEM; |
| 4587 | } |
| 4588 | obj_priv = obj->driver_private; |
Keith Packard | ba1eb1d | 2008-10-14 19:55:10 -0700 | [diff] [blame] | 4589 | obj_priv->agp_type = AGP_USER_CACHED_MEMORY; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4590 | |
| 4591 | ret = i915_gem_object_pin(obj, 4096); |
| 4592 | if (ret != 0) { |
| 4593 | drm_gem_object_unreference(obj); |
| 4594 | return ret; |
| 4595 | } |
| 4596 | |
| 4597 | dev_priv->status_gfx_addr = obj_priv->gtt_offset; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4598 | |
Eric Anholt | 856fa19 | 2009-03-19 14:10:50 -0700 | [diff] [blame] | 4599 | dev_priv->hw_status_page = kmap(obj_priv->pages[0]); |
Keith Packard | ba1eb1d | 2008-10-14 19:55:10 -0700 | [diff] [blame] | 4600 | if (dev_priv->hw_status_page == NULL) { |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4601 | DRM_ERROR("Failed to map status page.\n"); |
| 4602 | memset(&dev_priv->hws_map, 0, sizeof(dev_priv->hws_map)); |
Chris Wilson | 3eb2ee7 | 2009-02-11 14:26:34 +0000 | [diff] [blame] | 4603 | i915_gem_object_unpin(obj); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4604 | drm_gem_object_unreference(obj); |
| 4605 | return -EINVAL; |
| 4606 | } |
| 4607 | dev_priv->hws_obj = obj; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4608 | memset(dev_priv->hw_status_page, 0, PAGE_SIZE); |
| 4609 | I915_WRITE(HWS_PGA, dev_priv->status_gfx_addr); |
Keith Packard | ba1eb1d | 2008-10-14 19:55:10 -0700 | [diff] [blame] | 4610 | I915_READ(HWS_PGA); /* posting read */ |
Zhao Yakui | 44d98a6 | 2009-10-09 11:39:40 +0800 | [diff] [blame] | 4611 | DRM_DEBUG_DRIVER("hws offset: 0x%08x\n", dev_priv->status_gfx_addr); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4612 | |
| 4613 | return 0; |
| 4614 | } |
| 4615 | |
Chris Wilson | 85a7bb9 | 2009-02-11 14:52:44 +0000 | [diff] [blame] | 4616 | static void |
| 4617 | i915_gem_cleanup_hws(struct drm_device *dev) |
| 4618 | { |
| 4619 | drm_i915_private_t *dev_priv = dev->dev_private; |
Chris Wilson | bab2d1f | 2009-02-20 17:52:20 +0000 | [diff] [blame] | 4620 | struct drm_gem_object *obj; |
| 4621 | struct drm_i915_gem_object *obj_priv; |
Chris Wilson | 85a7bb9 | 2009-02-11 14:52:44 +0000 | [diff] [blame] | 4622 | |
| 4623 | if (dev_priv->hws_obj == NULL) |
| 4624 | return; |
| 4625 | |
Chris Wilson | bab2d1f | 2009-02-20 17:52:20 +0000 | [diff] [blame] | 4626 | obj = dev_priv->hws_obj; |
| 4627 | obj_priv = obj->driver_private; |
| 4628 | |
Eric Anholt | 856fa19 | 2009-03-19 14:10:50 -0700 | [diff] [blame] | 4629 | kunmap(obj_priv->pages[0]); |
Chris Wilson | 85a7bb9 | 2009-02-11 14:52:44 +0000 | [diff] [blame] | 4630 | i915_gem_object_unpin(obj); |
| 4631 | drm_gem_object_unreference(obj); |
| 4632 | dev_priv->hws_obj = NULL; |
Chris Wilson | bab2d1f | 2009-02-20 17:52:20 +0000 | [diff] [blame] | 4633 | |
Chris Wilson | 85a7bb9 | 2009-02-11 14:52:44 +0000 | [diff] [blame] | 4634 | memset(&dev_priv->hws_map, 0, sizeof(dev_priv->hws_map)); |
| 4635 | dev_priv->hw_status_page = NULL; |
| 4636 | |
| 4637 | /* Write high address into HWS_PGA when disabling. */ |
| 4638 | I915_WRITE(HWS_PGA, 0x1ffff000); |
| 4639 | } |
| 4640 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 4641 | int |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4642 | i915_gem_init_ringbuffer(struct drm_device *dev) |
| 4643 | { |
| 4644 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 4645 | struct drm_gem_object *obj; |
| 4646 | struct drm_i915_gem_object *obj_priv; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 4647 | drm_i915_ring_buffer_t *ring = &dev_priv->ring; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4648 | int ret; |
Keith Packard | 50aa253 | 2008-10-14 17:20:35 -0700 | [diff] [blame] | 4649 | u32 head; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4650 | |
| 4651 | ret = i915_gem_init_hws(dev); |
| 4652 | if (ret != 0) |
| 4653 | return ret; |
| 4654 | |
| 4655 | obj = drm_gem_object_alloc(dev, 128 * 1024); |
| 4656 | if (obj == NULL) { |
| 4657 | DRM_ERROR("Failed to allocate ringbuffer\n"); |
Chris Wilson | 85a7bb9 | 2009-02-11 14:52:44 +0000 | [diff] [blame] | 4658 | i915_gem_cleanup_hws(dev); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4659 | return -ENOMEM; |
| 4660 | } |
| 4661 | obj_priv = obj->driver_private; |
| 4662 | |
| 4663 | ret = i915_gem_object_pin(obj, 4096); |
| 4664 | if (ret != 0) { |
| 4665 | drm_gem_object_unreference(obj); |
Chris Wilson | 85a7bb9 | 2009-02-11 14:52:44 +0000 | [diff] [blame] | 4666 | i915_gem_cleanup_hws(dev); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4667 | return ret; |
| 4668 | } |
| 4669 | |
| 4670 | /* Set up the kernel mapping for the ring. */ |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 4671 | ring->Size = obj->size; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4672 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 4673 | ring->map.offset = dev->agp->base + obj_priv->gtt_offset; |
| 4674 | ring->map.size = obj->size; |
| 4675 | ring->map.type = 0; |
| 4676 | ring->map.flags = 0; |
| 4677 | ring->map.mtrr = 0; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4678 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 4679 | drm_core_ioremap_wc(&ring->map, dev); |
| 4680 | if (ring->map.handle == NULL) { |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4681 | DRM_ERROR("Failed to map ringbuffer.\n"); |
| 4682 | memset(&dev_priv->ring, 0, sizeof(dev_priv->ring)); |
Chris Wilson | 47ed185 | 2009-02-11 14:26:33 +0000 | [diff] [blame] | 4683 | i915_gem_object_unpin(obj); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4684 | drm_gem_object_unreference(obj); |
Chris Wilson | 85a7bb9 | 2009-02-11 14:52:44 +0000 | [diff] [blame] | 4685 | i915_gem_cleanup_hws(dev); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4686 | return -EINVAL; |
| 4687 | } |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 4688 | ring->ring_obj = obj; |
| 4689 | ring->virtual_start = ring->map.handle; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4690 | |
| 4691 | /* Stop the ring if it's running. */ |
| 4692 | I915_WRITE(PRB0_CTL, 0); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4693 | I915_WRITE(PRB0_TAIL, 0); |
Keith Packard | 50aa253 | 2008-10-14 17:20:35 -0700 | [diff] [blame] | 4694 | I915_WRITE(PRB0_HEAD, 0); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4695 | |
| 4696 | /* Initialize the ring. */ |
| 4697 | I915_WRITE(PRB0_START, obj_priv->gtt_offset); |
Keith Packard | 50aa253 | 2008-10-14 17:20:35 -0700 | [diff] [blame] | 4698 | head = I915_READ(PRB0_HEAD) & HEAD_ADDR; |
| 4699 | |
| 4700 | /* G45 ring initialization fails to reset head to zero */ |
| 4701 | if (head != 0) { |
| 4702 | DRM_ERROR("Ring head not reset to zero " |
| 4703 | "ctl %08x head %08x tail %08x start %08x\n", |
| 4704 | I915_READ(PRB0_CTL), |
| 4705 | I915_READ(PRB0_HEAD), |
| 4706 | I915_READ(PRB0_TAIL), |
| 4707 | I915_READ(PRB0_START)); |
| 4708 | I915_WRITE(PRB0_HEAD, 0); |
| 4709 | |
| 4710 | DRM_ERROR("Ring head forced to zero " |
| 4711 | "ctl %08x head %08x tail %08x start %08x\n", |
| 4712 | I915_READ(PRB0_CTL), |
| 4713 | I915_READ(PRB0_HEAD), |
| 4714 | I915_READ(PRB0_TAIL), |
| 4715 | I915_READ(PRB0_START)); |
| 4716 | } |
| 4717 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4718 | I915_WRITE(PRB0_CTL, |
| 4719 | ((obj->size - 4096) & RING_NR_PAGES) | |
| 4720 | RING_NO_REPORT | |
| 4721 | RING_VALID); |
| 4722 | |
Keith Packard | 50aa253 | 2008-10-14 17:20:35 -0700 | [diff] [blame] | 4723 | head = I915_READ(PRB0_HEAD) & HEAD_ADDR; |
| 4724 | |
| 4725 | /* If the head is still not zero, the ring is dead */ |
| 4726 | if (head != 0) { |
| 4727 | DRM_ERROR("Ring initialization failed " |
| 4728 | "ctl %08x head %08x tail %08x start %08x\n", |
| 4729 | I915_READ(PRB0_CTL), |
| 4730 | I915_READ(PRB0_HEAD), |
| 4731 | I915_READ(PRB0_TAIL), |
| 4732 | I915_READ(PRB0_START)); |
| 4733 | return -EIO; |
| 4734 | } |
| 4735 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4736 | /* Update our cache of the ring state */ |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 4737 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
| 4738 | i915_kernel_lost_context(dev); |
| 4739 | else { |
| 4740 | ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR; |
| 4741 | ring->tail = I915_READ(PRB0_TAIL) & TAIL_ADDR; |
| 4742 | ring->space = ring->head - (ring->tail + 8); |
| 4743 | if (ring->space < 0) |
| 4744 | ring->space += ring->Size; |
| 4745 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4746 | |
| 4747 | return 0; |
| 4748 | } |
| 4749 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 4750 | void |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4751 | i915_gem_cleanup_ringbuffer(struct drm_device *dev) |
| 4752 | { |
| 4753 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 4754 | |
| 4755 | if (dev_priv->ring.ring_obj == NULL) |
| 4756 | return; |
| 4757 | |
| 4758 | drm_core_ioremapfree(&dev_priv->ring.map, dev); |
| 4759 | |
| 4760 | i915_gem_object_unpin(dev_priv->ring.ring_obj); |
| 4761 | drm_gem_object_unreference(dev_priv->ring.ring_obj); |
| 4762 | dev_priv->ring.ring_obj = NULL; |
| 4763 | memset(&dev_priv->ring, 0, sizeof(dev_priv->ring)); |
| 4764 | |
Chris Wilson | 85a7bb9 | 2009-02-11 14:52:44 +0000 | [diff] [blame] | 4765 | i915_gem_cleanup_hws(dev); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4766 | } |
| 4767 | |
| 4768 | int |
| 4769 | i915_gem_entervt_ioctl(struct drm_device *dev, void *data, |
| 4770 | struct drm_file *file_priv) |
| 4771 | { |
| 4772 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 4773 | int ret; |
| 4774 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 4775 | if (drm_core_check_feature(dev, DRIVER_MODESET)) |
| 4776 | return 0; |
| 4777 | |
Ben Gamari | ba1234d | 2009-09-14 17:48:47 -0400 | [diff] [blame] | 4778 | if (atomic_read(&dev_priv->mm.wedged)) { |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4779 | DRM_ERROR("Reenabling wedged hardware, good luck\n"); |
Ben Gamari | ba1234d | 2009-09-14 17:48:47 -0400 | [diff] [blame] | 4780 | atomic_set(&dev_priv->mm.wedged, 0); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4781 | } |
| 4782 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4783 | mutex_lock(&dev->struct_mutex); |
Eric Anholt | 9bb2d6f | 2008-12-23 18:42:32 -0800 | [diff] [blame] | 4784 | dev_priv->mm.suspended = 0; |
| 4785 | |
| 4786 | ret = i915_gem_init_ringbuffer(dev); |
Wu Fengguang | d816f6a | 2009-04-18 10:43:32 +0800 | [diff] [blame] | 4787 | if (ret != 0) { |
| 4788 | mutex_unlock(&dev->struct_mutex); |
Eric Anholt | 9bb2d6f | 2008-12-23 18:42:32 -0800 | [diff] [blame] | 4789 | return ret; |
Wu Fengguang | d816f6a | 2009-04-18 10:43:32 +0800 | [diff] [blame] | 4790 | } |
Eric Anholt | 9bb2d6f | 2008-12-23 18:42:32 -0800 | [diff] [blame] | 4791 | |
Carl Worth | 5e118f4 | 2009-03-20 11:54:25 -0700 | [diff] [blame] | 4792 | spin_lock(&dev_priv->mm.active_list_lock); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4793 | BUG_ON(!list_empty(&dev_priv->mm.active_list)); |
Carl Worth | 5e118f4 | 2009-03-20 11:54:25 -0700 | [diff] [blame] | 4794 | spin_unlock(&dev_priv->mm.active_list_lock); |
| 4795 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4796 | BUG_ON(!list_empty(&dev_priv->mm.flushing_list)); |
| 4797 | BUG_ON(!list_empty(&dev_priv->mm.inactive_list)); |
| 4798 | BUG_ON(!list_empty(&dev_priv->mm.request_list)); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4799 | mutex_unlock(&dev->struct_mutex); |
Kristian Høgsberg | dbb19d3 | 2008-08-20 11:04:27 -0400 | [diff] [blame] | 4800 | |
| 4801 | drm_irq_install(dev); |
| 4802 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4803 | return 0; |
| 4804 | } |
| 4805 | |
| 4806 | int |
| 4807 | i915_gem_leavevt_ioctl(struct drm_device *dev, void *data, |
| 4808 | struct drm_file *file_priv) |
| 4809 | { |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 4810 | if (drm_core_check_feature(dev, DRIVER_MODESET)) |
| 4811 | return 0; |
| 4812 | |
Kristian Høgsberg | dbb19d3 | 2008-08-20 11:04:27 -0400 | [diff] [blame] | 4813 | drm_irq_uninstall(dev); |
Linus Torvalds | e6890f6 | 2009-09-08 17:09:24 -0700 | [diff] [blame] | 4814 | return i915_gem_idle(dev); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4815 | } |
| 4816 | |
| 4817 | void |
| 4818 | i915_gem_lastclose(struct drm_device *dev) |
| 4819 | { |
| 4820 | int ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4821 | |
Eric Anholt | e806b49 | 2009-01-22 09:56:58 -0800 | [diff] [blame] | 4822 | if (drm_core_check_feature(dev, DRIVER_MODESET)) |
| 4823 | return; |
| 4824 | |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 4825 | ret = i915_gem_idle(dev); |
| 4826 | if (ret) |
| 4827 | DRM_ERROR("failed to idle hardware: %d\n", ret); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4828 | } |
| 4829 | |
| 4830 | void |
| 4831 | i915_gem_load(struct drm_device *dev) |
| 4832 | { |
Grégoire Henry | b5aa8a0 | 2009-06-23 15:41:02 +0200 | [diff] [blame] | 4833 | int i; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4834 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 4835 | |
Carl Worth | 5e118f4 | 2009-03-20 11:54:25 -0700 | [diff] [blame] | 4836 | spin_lock_init(&dev_priv->mm.active_list_lock); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4837 | INIT_LIST_HEAD(&dev_priv->mm.active_list); |
| 4838 | INIT_LIST_HEAD(&dev_priv->mm.flushing_list); |
| 4839 | INIT_LIST_HEAD(&dev_priv->mm.inactive_list); |
| 4840 | INIT_LIST_HEAD(&dev_priv->mm.request_list); |
Eric Anholt | a09ba7f | 2009-08-29 12:49:51 -0700 | [diff] [blame] | 4841 | INIT_LIST_HEAD(&dev_priv->mm.fence_list); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4842 | INIT_DELAYED_WORK(&dev_priv->mm.retire_work, |
| 4843 | i915_gem_retire_work_handler); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4844 | dev_priv->mm.next_gem_seqno = 1; |
| 4845 | |
Chris Wilson | 3116971 | 2009-09-14 16:50:28 +0100 | [diff] [blame] | 4846 | spin_lock(&shrink_list_lock); |
| 4847 | list_add(&dev_priv->mm.shrink_list, &shrink_list); |
| 4848 | spin_unlock(&shrink_list_lock); |
| 4849 | |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 4850 | /* Old X drivers will take 0-2 for front, back, depth buffers */ |
| 4851 | dev_priv->fence_reg_start = 3; |
| 4852 | |
Jesse Barnes | 0f973f2 | 2009-01-26 17:10:45 -0800 | [diff] [blame] | 4853 | if (IS_I965G(dev) || IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 4854 | dev_priv->num_fence_regs = 16; |
| 4855 | else |
| 4856 | dev_priv->num_fence_regs = 8; |
| 4857 | |
Grégoire Henry | b5aa8a0 | 2009-06-23 15:41:02 +0200 | [diff] [blame] | 4858 | /* Initialize fence registers to zero */ |
| 4859 | if (IS_I965G(dev)) { |
| 4860 | for (i = 0; i < 16; i++) |
| 4861 | I915_WRITE64(FENCE_REG_965_0 + (i * 8), 0); |
| 4862 | } else { |
| 4863 | for (i = 0; i < 8; i++) |
| 4864 | I915_WRITE(FENCE_REG_830_0 + (i * 4), 0); |
| 4865 | if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) |
| 4866 | for (i = 0; i < 8; i++) |
| 4867 | I915_WRITE(FENCE_REG_945_8 + (i * 4), 0); |
| 4868 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4869 | i915_gem_detect_bit_6_swizzle(dev); |
Kristian Høgsberg | 6b95a20 | 2009-11-18 11:25:18 -0500 | [diff] [blame] | 4870 | init_waitqueue_head(&dev_priv->pending_flip_queue); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4871 | } |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4872 | |
| 4873 | /* |
| 4874 | * Create a physically contiguous memory object for this object |
| 4875 | * e.g. for cursor + overlay regs |
| 4876 | */ |
| 4877 | int i915_gem_init_phys_object(struct drm_device *dev, |
| 4878 | int id, int size) |
| 4879 | { |
| 4880 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 4881 | struct drm_i915_gem_phys_object *phys_obj; |
| 4882 | int ret; |
| 4883 | |
| 4884 | if (dev_priv->mm.phys_objs[id - 1] || !size) |
| 4885 | return 0; |
| 4886 | |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 4887 | phys_obj = kzalloc(sizeof(struct drm_i915_gem_phys_object), GFP_KERNEL); |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4888 | if (!phys_obj) |
| 4889 | return -ENOMEM; |
| 4890 | |
| 4891 | phys_obj->id = id; |
| 4892 | |
Zhenyu Wang | e6be8d9 | 2010-01-05 11:25:05 +0800 | [diff] [blame] | 4893 | phys_obj->handle = drm_pci_alloc(dev, size, 0); |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4894 | if (!phys_obj->handle) { |
| 4895 | ret = -ENOMEM; |
| 4896 | goto kfree_obj; |
| 4897 | } |
| 4898 | #ifdef CONFIG_X86 |
| 4899 | set_memory_wc((unsigned long)phys_obj->handle->vaddr, phys_obj->handle->size / PAGE_SIZE); |
| 4900 | #endif |
| 4901 | |
| 4902 | dev_priv->mm.phys_objs[id - 1] = phys_obj; |
| 4903 | |
| 4904 | return 0; |
| 4905 | kfree_obj: |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 4906 | kfree(phys_obj); |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4907 | return ret; |
| 4908 | } |
| 4909 | |
| 4910 | void i915_gem_free_phys_object(struct drm_device *dev, int id) |
| 4911 | { |
| 4912 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 4913 | struct drm_i915_gem_phys_object *phys_obj; |
| 4914 | |
| 4915 | if (!dev_priv->mm.phys_objs[id - 1]) |
| 4916 | return; |
| 4917 | |
| 4918 | phys_obj = dev_priv->mm.phys_objs[id - 1]; |
| 4919 | if (phys_obj->cur_obj) { |
| 4920 | i915_gem_detach_phys_object(dev, phys_obj->cur_obj); |
| 4921 | } |
| 4922 | |
| 4923 | #ifdef CONFIG_X86 |
| 4924 | set_memory_wb((unsigned long)phys_obj->handle->vaddr, phys_obj->handle->size / PAGE_SIZE); |
| 4925 | #endif |
| 4926 | drm_pci_free(dev, phys_obj->handle); |
| 4927 | kfree(phys_obj); |
| 4928 | dev_priv->mm.phys_objs[id - 1] = NULL; |
| 4929 | } |
| 4930 | |
| 4931 | void i915_gem_free_all_phys_object(struct drm_device *dev) |
| 4932 | { |
| 4933 | int i; |
| 4934 | |
Dave Airlie | 260883c | 2009-01-22 17:58:49 +1000 | [diff] [blame] | 4935 | for (i = I915_GEM_PHYS_CURSOR_0; i <= I915_MAX_PHYS_OBJECT; i++) |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4936 | i915_gem_free_phys_object(dev, i); |
| 4937 | } |
| 4938 | |
| 4939 | void i915_gem_detach_phys_object(struct drm_device *dev, |
| 4940 | struct drm_gem_object *obj) |
| 4941 | { |
| 4942 | struct drm_i915_gem_object *obj_priv; |
| 4943 | int i; |
| 4944 | int ret; |
| 4945 | int page_count; |
| 4946 | |
| 4947 | obj_priv = obj->driver_private; |
| 4948 | if (!obj_priv->phys_obj) |
| 4949 | return; |
| 4950 | |
Eric Anholt | 856fa19 | 2009-03-19 14:10:50 -0700 | [diff] [blame] | 4951 | ret = i915_gem_object_get_pages(obj); |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4952 | if (ret) |
| 4953 | goto out; |
| 4954 | |
| 4955 | page_count = obj->size / PAGE_SIZE; |
| 4956 | |
| 4957 | for (i = 0; i < page_count; i++) { |
Eric Anholt | 856fa19 | 2009-03-19 14:10:50 -0700 | [diff] [blame] | 4958 | char *dst = kmap_atomic(obj_priv->pages[i], KM_USER0); |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4959 | char *src = obj_priv->phys_obj->handle->vaddr + (i * PAGE_SIZE); |
| 4960 | |
| 4961 | memcpy(dst, src, PAGE_SIZE); |
| 4962 | kunmap_atomic(dst, KM_USER0); |
| 4963 | } |
Eric Anholt | 856fa19 | 2009-03-19 14:10:50 -0700 | [diff] [blame] | 4964 | drm_clflush_pages(obj_priv->pages, page_count); |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4965 | drm_agp_chipset_flush(dev); |
Chris Wilson | d78b47b | 2009-06-17 21:52:49 +0100 | [diff] [blame] | 4966 | |
| 4967 | i915_gem_object_put_pages(obj); |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4968 | out: |
| 4969 | obj_priv->phys_obj->cur_obj = NULL; |
| 4970 | obj_priv->phys_obj = NULL; |
| 4971 | } |
| 4972 | |
| 4973 | int |
| 4974 | i915_gem_attach_phys_object(struct drm_device *dev, |
| 4975 | struct drm_gem_object *obj, int id) |
| 4976 | { |
| 4977 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 4978 | struct drm_i915_gem_object *obj_priv; |
| 4979 | int ret = 0; |
| 4980 | int page_count; |
| 4981 | int i; |
| 4982 | |
| 4983 | if (id > I915_MAX_PHYS_OBJECT) |
| 4984 | return -EINVAL; |
| 4985 | |
| 4986 | obj_priv = obj->driver_private; |
| 4987 | |
| 4988 | if (obj_priv->phys_obj) { |
| 4989 | if (obj_priv->phys_obj->id == id) |
| 4990 | return 0; |
| 4991 | i915_gem_detach_phys_object(dev, obj); |
| 4992 | } |
| 4993 | |
| 4994 | |
| 4995 | /* create a new object */ |
| 4996 | if (!dev_priv->mm.phys_objs[id - 1]) { |
| 4997 | ret = i915_gem_init_phys_object(dev, id, |
| 4998 | obj->size); |
| 4999 | if (ret) { |
Linus Torvalds | aeb565d | 2009-01-26 10:01:53 -0800 | [diff] [blame] | 5000 | 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] | 5001 | goto out; |
| 5002 | } |
| 5003 | } |
| 5004 | |
| 5005 | /* bind to the object */ |
| 5006 | obj_priv->phys_obj = dev_priv->mm.phys_objs[id - 1]; |
| 5007 | obj_priv->phys_obj->cur_obj = obj; |
| 5008 | |
Eric Anholt | 856fa19 | 2009-03-19 14:10:50 -0700 | [diff] [blame] | 5009 | ret = i915_gem_object_get_pages(obj); |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 5010 | if (ret) { |
| 5011 | DRM_ERROR("failed to get page list\n"); |
| 5012 | goto out; |
| 5013 | } |
| 5014 | |
| 5015 | page_count = obj->size / PAGE_SIZE; |
| 5016 | |
| 5017 | for (i = 0; i < page_count; i++) { |
Eric Anholt | 856fa19 | 2009-03-19 14:10:50 -0700 | [diff] [blame] | 5018 | char *src = kmap_atomic(obj_priv->pages[i], KM_USER0); |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 5019 | char *dst = obj_priv->phys_obj->handle->vaddr + (i * PAGE_SIZE); |
| 5020 | |
| 5021 | memcpy(dst, src, PAGE_SIZE); |
| 5022 | kunmap_atomic(src, KM_USER0); |
| 5023 | } |
| 5024 | |
Chris Wilson | d78b47b | 2009-06-17 21:52:49 +0100 | [diff] [blame] | 5025 | i915_gem_object_put_pages(obj); |
| 5026 | |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 5027 | return 0; |
| 5028 | out: |
| 5029 | return ret; |
| 5030 | } |
| 5031 | |
| 5032 | static int |
| 5033 | i915_gem_phys_pwrite(struct drm_device *dev, struct drm_gem_object *obj, |
| 5034 | struct drm_i915_gem_pwrite *args, |
| 5035 | struct drm_file *file_priv) |
| 5036 | { |
| 5037 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
| 5038 | void *obj_addr; |
| 5039 | int ret; |
| 5040 | char __user *user_data; |
| 5041 | |
| 5042 | user_data = (char __user *) (uintptr_t) args->data_ptr; |
| 5043 | obj_addr = obj_priv->phys_obj->handle->vaddr + args->offset; |
| 5044 | |
Zhao Yakui | 44d98a6 | 2009-10-09 11:39:40 +0800 | [diff] [blame] | 5045 | DRM_DEBUG_DRIVER("obj_addr %p, %lld\n", obj_addr, args->size); |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 5046 | ret = copy_from_user(obj_addr, user_data, args->size); |
| 5047 | if (ret) |
| 5048 | return -EFAULT; |
| 5049 | |
| 5050 | drm_agp_chipset_flush(dev); |
| 5051 | return 0; |
| 5052 | } |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 5053 | |
| 5054 | void i915_gem_release(struct drm_device * dev, struct drm_file *file_priv) |
| 5055 | { |
| 5056 | struct drm_i915_file_private *i915_file_priv = file_priv->driver_priv; |
| 5057 | |
| 5058 | /* Clean up our request list when the client is going away, so that |
| 5059 | * later retire_requests won't dereference our soon-to-be-gone |
| 5060 | * file_priv. |
| 5061 | */ |
| 5062 | mutex_lock(&dev->struct_mutex); |
| 5063 | while (!list_empty(&i915_file_priv->mm.request_list)) |
| 5064 | list_del_init(i915_file_priv->mm.request_list.next); |
| 5065 | mutex_unlock(&dev->struct_mutex); |
| 5066 | } |
Chris Wilson | 3116971 | 2009-09-14 16:50:28 +0100 | [diff] [blame] | 5067 | |
Chris Wilson | 3116971 | 2009-09-14 16:50:28 +0100 | [diff] [blame] | 5068 | static int |
| 5069 | i915_gem_shrink(int nr_to_scan, gfp_t gfp_mask) |
| 5070 | { |
| 5071 | drm_i915_private_t *dev_priv, *next_dev; |
| 5072 | struct drm_i915_gem_object *obj_priv, *next_obj; |
| 5073 | int cnt = 0; |
| 5074 | int would_deadlock = 1; |
| 5075 | |
| 5076 | /* "fast-path" to count number of available objects */ |
| 5077 | if (nr_to_scan == 0) { |
| 5078 | spin_lock(&shrink_list_lock); |
| 5079 | list_for_each_entry(dev_priv, &shrink_list, mm.shrink_list) { |
| 5080 | struct drm_device *dev = dev_priv->dev; |
| 5081 | |
| 5082 | if (mutex_trylock(&dev->struct_mutex)) { |
| 5083 | list_for_each_entry(obj_priv, |
| 5084 | &dev_priv->mm.inactive_list, |
| 5085 | list) |
| 5086 | cnt++; |
| 5087 | mutex_unlock(&dev->struct_mutex); |
| 5088 | } |
| 5089 | } |
| 5090 | spin_unlock(&shrink_list_lock); |
| 5091 | |
| 5092 | return (cnt / 100) * sysctl_vfs_cache_pressure; |
| 5093 | } |
| 5094 | |
| 5095 | spin_lock(&shrink_list_lock); |
| 5096 | |
| 5097 | /* first scan for clean buffers */ |
| 5098 | list_for_each_entry_safe(dev_priv, next_dev, |
| 5099 | &shrink_list, mm.shrink_list) { |
| 5100 | struct drm_device *dev = dev_priv->dev; |
| 5101 | |
| 5102 | if (! mutex_trylock(&dev->struct_mutex)) |
| 5103 | continue; |
| 5104 | |
| 5105 | spin_unlock(&shrink_list_lock); |
| 5106 | |
| 5107 | i915_gem_retire_requests(dev); |
| 5108 | |
| 5109 | list_for_each_entry_safe(obj_priv, next_obj, |
| 5110 | &dev_priv->mm.inactive_list, |
| 5111 | list) { |
| 5112 | if (i915_gem_object_is_purgeable(obj_priv)) { |
Chris Wilson | 963b483 | 2009-09-20 23:03:54 +0100 | [diff] [blame] | 5113 | i915_gem_object_unbind(obj_priv->obj); |
Chris Wilson | 3116971 | 2009-09-14 16:50:28 +0100 | [diff] [blame] | 5114 | if (--nr_to_scan <= 0) |
| 5115 | break; |
| 5116 | } |
| 5117 | } |
| 5118 | |
| 5119 | spin_lock(&shrink_list_lock); |
| 5120 | mutex_unlock(&dev->struct_mutex); |
| 5121 | |
Chris Wilson | 963b483 | 2009-09-20 23:03:54 +0100 | [diff] [blame] | 5122 | would_deadlock = 0; |
| 5123 | |
Chris Wilson | 3116971 | 2009-09-14 16:50:28 +0100 | [diff] [blame] | 5124 | if (nr_to_scan <= 0) |
| 5125 | break; |
| 5126 | } |
| 5127 | |
| 5128 | /* second pass, evict/count anything still on the inactive list */ |
| 5129 | list_for_each_entry_safe(dev_priv, next_dev, |
| 5130 | &shrink_list, mm.shrink_list) { |
| 5131 | struct drm_device *dev = dev_priv->dev; |
| 5132 | |
| 5133 | if (! mutex_trylock(&dev->struct_mutex)) |
| 5134 | continue; |
| 5135 | |
| 5136 | spin_unlock(&shrink_list_lock); |
| 5137 | |
| 5138 | list_for_each_entry_safe(obj_priv, next_obj, |
| 5139 | &dev_priv->mm.inactive_list, |
| 5140 | list) { |
| 5141 | if (nr_to_scan > 0) { |
Chris Wilson | 963b483 | 2009-09-20 23:03:54 +0100 | [diff] [blame] | 5142 | i915_gem_object_unbind(obj_priv->obj); |
Chris Wilson | 3116971 | 2009-09-14 16:50:28 +0100 | [diff] [blame] | 5143 | nr_to_scan--; |
| 5144 | } else |
| 5145 | cnt++; |
| 5146 | } |
| 5147 | |
| 5148 | spin_lock(&shrink_list_lock); |
| 5149 | mutex_unlock(&dev->struct_mutex); |
| 5150 | |
| 5151 | would_deadlock = 0; |
| 5152 | } |
| 5153 | |
| 5154 | spin_unlock(&shrink_list_lock); |
| 5155 | |
| 5156 | if (would_deadlock) |
| 5157 | return -1; |
| 5158 | else if (cnt > 0) |
| 5159 | return (cnt / 100) * sysctl_vfs_cache_pressure; |
| 5160 | else |
| 5161 | return 0; |
| 5162 | } |
| 5163 | |
| 5164 | static struct shrinker shrinker = { |
| 5165 | .shrink = i915_gem_shrink, |
| 5166 | .seeks = DEFAULT_SEEKS, |
| 5167 | }; |
| 5168 | |
| 5169 | __init void |
| 5170 | i915_gem_shrinker_init(void) |
| 5171 | { |
| 5172 | register_shrinker(&shrinker); |
| 5173 | } |
| 5174 | |
| 5175 | __exit void |
| 5176 | i915_gem_shrinker_exit(void) |
| 5177 | { |
| 5178 | unregister_shrinker(&shrinker); |
| 5179 | } |