| File: | dev/pci/drm/i915/i915_vma.c |
| Warning: | line 1841, column 2 Value stored to 'node' is never read |
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| 1 | /* |
| 2 | * Copyright © 2016 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 | */ |
| 24 | |
| 25 | #include <linux/sched/mm.h> |
| 26 | #include <linux/dma-fence-array.h> |
| 27 | #include <drm/drm_gem.h> |
| 28 | |
| 29 | #include "display/intel_frontbuffer.h" |
| 30 | #include "gem/i915_gem_lmem.h" |
| 31 | #include "gem/i915_gem_tiling.h" |
| 32 | #include "gt/intel_engine.h" |
| 33 | #include "gt/intel_engine_heartbeat.h" |
| 34 | #include "gt/intel_gt.h" |
| 35 | #include "gt/intel_gt_requests.h" |
| 36 | |
| 37 | #include "i915_drv.h" |
| 38 | #include "i915_gem_evict.h" |
| 39 | #include "i915_sw_fence_work.h" |
| 40 | #include "i915_trace.h" |
| 41 | #include "i915_vma.h" |
| 42 | #include "i915_vma_resource.h" |
| 43 | |
| 44 | #include <dev/pci/agpvar.h> |
| 45 | |
| 46 | static inline void assert_vma_held_evict(const struct i915_vma *vma) |
| 47 | { |
| 48 | /* |
| 49 | * We may be forced to unbind when the vm is dead, to clean it up. |
| 50 | * This is the only exception to the requirement of the object lock |
| 51 | * being held. |
| 52 | */ |
| 53 | if (kref_read(&vma->vm->ref)) |
| 54 | assert_object_held_shared(vma->obj); |
| 55 | } |
| 56 | |
| 57 | static struct pool slab_vmas; |
| 58 | |
| 59 | static struct i915_vma *i915_vma_alloc(void) |
| 60 | { |
| 61 | #ifdef __linux__ |
| 62 | return kmem_cache_zalloc(slab_vmas, GFP_KERNEL(0x0001 | 0x0004)); |
| 63 | #else |
| 64 | return pool_get(&slab_vmas, PR_WAITOK0x0001 | PR_ZERO0x0008); |
| 65 | #endif |
| 66 | } |
| 67 | |
| 68 | static void i915_vma_free(struct i915_vma *vma) |
| 69 | { |
| 70 | #ifdef __linux__ |
| 71 | return kmem_cache_free(slab_vmas, vma); |
| 72 | #else |
| 73 | pool_put(&slab_vmas, vma); |
| 74 | #endif |
| 75 | } |
| 76 | |
| 77 | #if IS_ENABLED(CONFIG_DRM_I915_ERRLOG_GEM)0 && IS_ENABLED(CONFIG_DRM_DEBUG_MM)0 |
| 78 | |
| 79 | #include <linux/stackdepot.h> |
| 80 | |
| 81 | static void vma_print_allocator(struct i915_vma *vma, const char *reason) |
| 82 | { |
| 83 | char buf[512]; |
| 84 | |
| 85 | if (!vma->node.stack) { |
| 86 | DRM_DEBUG_DRIVER("vma.node [%08llx + %08llx] %s: unknown owner\n",___drm_dbg(((void *)0), DRM_UT_DRIVER, "vma.node [%08llx + %08llx] %s: unknown owner\n" , vma->node.start, vma->node.size, reason) |
| 87 | vma->node.start, vma->node.size, reason)___drm_dbg(((void *)0), DRM_UT_DRIVER, "vma.node [%08llx + %08llx] %s: unknown owner\n" , vma->node.start, vma->node.size, reason); |
| 88 | return; |
| 89 | } |
| 90 | |
| 91 | stack_depot_snprint(vma->node.stack, buf, sizeof(buf), 0); |
| 92 | DRM_DEBUG_DRIVER("vma.node [%08llx + %08llx] %s: inserted at %s\n",___drm_dbg(((void *)0), DRM_UT_DRIVER, "vma.node [%08llx + %08llx] %s: inserted at %s\n" , vma->node.start, vma->node.size, reason, buf) |
| 93 | vma->node.start, vma->node.size, reason, buf)___drm_dbg(((void *)0), DRM_UT_DRIVER, "vma.node [%08llx + %08llx] %s: inserted at %s\n" , vma->node.start, vma->node.size, reason, buf); |
| 94 | } |
| 95 | |
| 96 | #else |
| 97 | |
| 98 | static void vma_print_allocator(struct i915_vma *vma, const char *reason) |
| 99 | { |
| 100 | } |
| 101 | |
| 102 | #endif |
| 103 | |
| 104 | static inline struct i915_vma *active_to_vma(struct i915_active *ref) |
| 105 | { |
| 106 | return container_of(ref, typeof(struct i915_vma), active)({ const __typeof( ((typeof(struct i915_vma) *)0)->active ) *__mptr = (ref); (typeof(struct i915_vma) *)( (char *)__mptr - __builtin_offsetof(typeof(struct i915_vma), active) );}); |
| 107 | } |
| 108 | |
| 109 | static int __i915_vma_active(struct i915_active *ref) |
| 110 | { |
| 111 | return i915_vma_tryget(active_to_vma(ref)) ? 0 : -ENOENT2; |
| 112 | } |
| 113 | |
| 114 | static void __i915_vma_retire(struct i915_active *ref) |
| 115 | { |
| 116 | i915_vma_put(active_to_vma(ref)); |
| 117 | } |
| 118 | |
| 119 | static struct i915_vma * |
| 120 | vma_create(struct drm_i915_gem_object *obj, |
| 121 | struct i915_address_space *vm, |
| 122 | const struct i915_gtt_view *view) |
| 123 | { |
| 124 | struct i915_vma *pos = ERR_PTR(-E2BIG7); |
| 125 | struct i915_vma *vma; |
| 126 | struct rb_node *rb, **p; |
| 127 | int err; |
| 128 | |
| 129 | /* The aliasing_ppgtt should never be used directly! */ |
| 130 | GEM_BUG_ON(vm == &vm->gt->ggtt->alias->vm)((void)0); |
| 131 | |
| 132 | vma = i915_vma_alloc(); |
| 133 | if (vma == NULL((void *)0)) |
| 134 | return ERR_PTR(-ENOMEM12); |
| 135 | |
| 136 | vma->ops = &vm->vma_ops; |
| 137 | vma->obj = obj; |
| 138 | vma->size = obj->base.size; |
| 139 | vma->display_alignment = I915_GTT_MIN_ALIGNMENT(1ULL << (12)); |
| 140 | |
| 141 | i915_active_init(&vma->active, __i915_vma_active, __i915_vma_retire, 0)do { static struct lock_class_key __mkey; static struct lock_class_key __wkey; __i915_active_init(&vma->active, __i915_vma_active , __i915_vma_retire, 0, &__mkey, &__wkey); } while (0 ); |
| 142 | |
| 143 | #ifdef notyet |
| 144 | /* Declare ourselves safe for use inside shrinkers */ |
| 145 | if (IS_ENABLED(CONFIG_LOCKDEP)0) { |
| 146 | fs_reclaim_acquire(GFP_KERNEL(0x0001 | 0x0004)); |
| 147 | might_lock(&vma->active.mutex); |
| 148 | fs_reclaim_release(GFP_KERNEL(0x0001 | 0x0004)); |
| 149 | } |
| 150 | #endif |
| 151 | |
| 152 | INIT_LIST_HEAD(&vma->closed_link); |
| 153 | INIT_LIST_HEAD(&vma->obj_link); |
| 154 | RB_CLEAR_NODE(&vma->obj_node)(((&vma->obj_node))->__entry.rbe_parent = (&vma ->obj_node)); |
| 155 | |
| 156 | if (view && view->type != I915_GTT_VIEW_NORMAL) { |
| 157 | vma->gtt_view = *view; |
| 158 | if (view->type == I915_GTT_VIEW_PARTIAL) { |
| 159 | GEM_BUG_ON(range_overflows_t(u64,((void)0) |
| 160 | view->partial.offset,((void)0) |
| 161 | view->partial.size,((void)0) |
| 162 | obj->base.size >> PAGE_SHIFT))((void)0); |
| 163 | vma->size = view->partial.size; |
| 164 | vma->size <<= PAGE_SHIFT12; |
| 165 | GEM_BUG_ON(vma->size > obj->base.size)((void)0); |
| 166 | } else if (view->type == I915_GTT_VIEW_ROTATED) { |
| 167 | vma->size = intel_rotation_info_size(&view->rotated); |
| 168 | vma->size <<= PAGE_SHIFT12; |
| 169 | } else if (view->type == I915_GTT_VIEW_REMAPPED) { |
| 170 | vma->size = intel_remapped_info_size(&view->remapped); |
| 171 | vma->size <<= PAGE_SHIFT12; |
| 172 | } |
| 173 | } |
| 174 | |
| 175 | if (unlikely(vma->size > vm->total)__builtin_expect(!!(vma->size > vm->total), 0)) |
| 176 | goto err_vma; |
| 177 | |
| 178 | GEM_BUG_ON(!IS_ALIGNED(vma->size, I915_GTT_PAGE_SIZE))((void)0); |
| 179 | |
| 180 | err = mutex_lock_interruptible(&vm->mutex); |
| 181 | if (err) { |
| 182 | pos = ERR_PTR(err); |
| 183 | goto err_vma; |
| 184 | } |
| 185 | |
| 186 | vma->vm = vm; |
| 187 | list_add_tail(&vma->vm_link, &vm->unbound_list); |
| 188 | |
| 189 | spin_lock(&obj->vma.lock)mtx_enter(&obj->vma.lock); |
| 190 | if (i915_is_ggtt(vm)((vm)->is_ggtt)) { |
| 191 | if (unlikely(overflows_type(vma->size, u32))__builtin_expect(!!((sizeof(vma->size) > sizeof(u32) && (vma->size) >> (8 * sizeof(u32)))), 0)) |
| 192 | goto err_unlock; |
| 193 | |
| 194 | vma->fence_size = i915_gem_fence_size(vm->i915, vma->size, |
| 195 | i915_gem_object_get_tiling(obj), |
| 196 | i915_gem_object_get_stride(obj)); |
| 197 | if (unlikely(vma->fence_size < vma->size || /* overflow */__builtin_expect(!!(vma->fence_size < vma->size || vma ->fence_size > vm->total), 0) |
| 198 | vma->fence_size > vm->total)__builtin_expect(!!(vma->fence_size < vma->size || vma ->fence_size > vm->total), 0)) |
| 199 | goto err_unlock; |
| 200 | |
| 201 | GEM_BUG_ON(!IS_ALIGNED(vma->fence_size, I915_GTT_MIN_ALIGNMENT))((void)0); |
| 202 | |
| 203 | vma->fence_alignment = i915_gem_fence_alignment(vm->i915, vma->size, |
| 204 | i915_gem_object_get_tiling(obj), |
| 205 | i915_gem_object_get_stride(obj)); |
| 206 | GEM_BUG_ON(!is_power_of_2(vma->fence_alignment))((void)0); |
| 207 | |
| 208 | __set_bit(I915_VMA_GGTT_BIT13, __i915_vma_flags(vma)((unsigned long *)&(vma)->flags)); |
| 209 | } |
| 210 | |
| 211 | rb = NULL((void *)0); |
| 212 | p = &obj->vma.tree.rb_node; |
| 213 | while (*p) { |
| 214 | long cmp; |
| 215 | |
| 216 | rb = *p; |
| 217 | pos = rb_entry(rb, struct i915_vma, obj_node)({ const __typeof( ((struct i915_vma *)0)->obj_node ) *__mptr = (rb); (struct i915_vma *)( (char *)__mptr - __builtin_offsetof (struct i915_vma, obj_node) );}); |
| 218 | |
| 219 | /* |
| 220 | * If the view already exists in the tree, another thread |
| 221 | * already created a matching vma, so return the older instance |
| 222 | * and dispose of ours. |
| 223 | */ |
| 224 | cmp = i915_vma_compare(pos, vm, view); |
| 225 | if (cmp < 0) |
| 226 | p = &rb->rb_right__entry.rbe_right; |
| 227 | else if (cmp > 0) |
| 228 | p = &rb->rb_left__entry.rbe_left; |
| 229 | else |
| 230 | goto err_unlock; |
| 231 | } |
| 232 | rb_link_node(&vma->obj_node, rb, p); |
| 233 | rb_insert_color(&vma->obj_node, &obj->vma.tree)linux_root_RB_INSERT_COLOR((struct linux_root *)(&obj-> vma.tree), (&vma->obj_node)); |
| 234 | |
| 235 | if (i915_vma_is_ggtt(vma)) |
| 236 | /* |
| 237 | * We put the GGTT vma at the start of the vma-list, followed |
| 238 | * by the ppGGTT vma. This allows us to break early when |
| 239 | * iterating over only the GGTT vma for an object, see |
| 240 | * for_each_ggtt_vma() |
| 241 | */ |
| 242 | list_add(&vma->obj_link, &obj->vma.list); |
| 243 | else |
| 244 | list_add_tail(&vma->obj_link, &obj->vma.list); |
| 245 | |
| 246 | spin_unlock(&obj->vma.lock)mtx_leave(&obj->vma.lock); |
| 247 | mutex_unlock(&vm->mutex)rw_exit_write(&vm->mutex); |
| 248 | |
| 249 | return vma; |
| 250 | |
| 251 | err_unlock: |
| 252 | spin_unlock(&obj->vma.lock)mtx_leave(&obj->vma.lock); |
| 253 | list_del_init(&vma->vm_link); |
| 254 | mutex_unlock(&vm->mutex)rw_exit_write(&vm->mutex); |
| 255 | err_vma: |
| 256 | i915_vma_free(vma); |
| 257 | return pos; |
| 258 | } |
| 259 | |
| 260 | static struct i915_vma * |
| 261 | i915_vma_lookup(struct drm_i915_gem_object *obj, |
| 262 | struct i915_address_space *vm, |
| 263 | const struct i915_gtt_view *view) |
| 264 | { |
| 265 | struct rb_node *rb; |
| 266 | |
| 267 | rb = obj->vma.tree.rb_node; |
| 268 | while (rb) { |
| 269 | struct i915_vma *vma = rb_entry(rb, struct i915_vma, obj_node)({ const __typeof( ((struct i915_vma *)0)->obj_node ) *__mptr = (rb); (struct i915_vma *)( (char *)__mptr - __builtin_offsetof (struct i915_vma, obj_node) );}); |
| 270 | long cmp; |
| 271 | |
| 272 | cmp = i915_vma_compare(vma, vm, view); |
| 273 | if (cmp == 0) |
| 274 | return vma; |
| 275 | |
| 276 | if (cmp < 0) |
| 277 | rb = rb->rb_right__entry.rbe_right; |
| 278 | else |
| 279 | rb = rb->rb_left__entry.rbe_left; |
| 280 | } |
| 281 | |
| 282 | return NULL((void *)0); |
| 283 | } |
| 284 | |
| 285 | /** |
| 286 | * i915_vma_instance - return the singleton instance of the VMA |
| 287 | * @obj: parent &struct drm_i915_gem_object to be mapped |
| 288 | * @vm: address space in which the mapping is located |
| 289 | * @view: additional mapping requirements |
| 290 | * |
| 291 | * i915_vma_instance() looks up an existing VMA of the @obj in the @vm with |
| 292 | * the same @view characteristics. If a match is not found, one is created. |
| 293 | * Once created, the VMA is kept until either the object is freed, or the |
| 294 | * address space is closed. |
| 295 | * |
| 296 | * Returns the vma, or an error pointer. |
| 297 | */ |
| 298 | struct i915_vma * |
| 299 | i915_vma_instance(struct drm_i915_gem_object *obj, |
| 300 | struct i915_address_space *vm, |
| 301 | const struct i915_gtt_view *view) |
| 302 | { |
| 303 | struct i915_vma *vma; |
| 304 | |
| 305 | GEM_BUG_ON(view && !i915_is_ggtt_or_dpt(vm))((void)0); |
| 306 | GEM_BUG_ON(!kref_read(&vm->ref))((void)0); |
| 307 | |
| 308 | spin_lock(&obj->vma.lock)mtx_enter(&obj->vma.lock); |
| 309 | vma = i915_vma_lookup(obj, vm, view); |
| 310 | spin_unlock(&obj->vma.lock)mtx_leave(&obj->vma.lock); |
| 311 | |
| 312 | /* vma_create() will resolve the race if another creates the vma */ |
| 313 | if (unlikely(!vma)__builtin_expect(!!(!vma), 0)) |
| 314 | vma = vma_create(obj, vm, view); |
| 315 | |
| 316 | GEM_BUG_ON(!IS_ERR(vma) && i915_vma_compare(vma, vm, view))((void)0); |
| 317 | return vma; |
| 318 | } |
| 319 | |
| 320 | struct i915_vma_work { |
| 321 | struct dma_fence_work base; |
| 322 | struct i915_address_space *vm; |
| 323 | struct i915_vm_pt_stash stash; |
| 324 | struct i915_vma_resource *vma_res; |
| 325 | struct drm_i915_gem_object *obj; |
| 326 | struct i915_sw_dma_fence_cb cb; |
| 327 | enum i915_cache_level cache_level; |
| 328 | unsigned int flags; |
| 329 | }; |
| 330 | |
| 331 | static void __vma_bind(struct dma_fence_work *work) |
| 332 | { |
| 333 | struct i915_vma_work *vw = container_of(work, typeof(*vw), base)({ const __typeof( ((typeof(*vw) *)0)->base ) *__mptr = (work ); (typeof(*vw) *)( (char *)__mptr - __builtin_offsetof(typeof (*vw), base) );}); |
| 334 | struct i915_vma_resource *vma_res = vw->vma_res; |
| 335 | |
| 336 | /* |
| 337 | * We are about the bind the object, which must mean we have already |
| 338 | * signaled the work to potentially clear/move the pages underneath. If |
| 339 | * something went wrong at that stage then the object should have |
| 340 | * unknown_state set, in which case we need to skip the bind. |
| 341 | */ |
| 342 | if (i915_gem_object_has_unknown_state(vw->obj)) |
| 343 | return; |
| 344 | |
| 345 | vma_res->ops->bind_vma(vma_res->vm, &vw->stash, |
| 346 | vma_res, vw->cache_level, vw->flags); |
| 347 | } |
| 348 | |
| 349 | static void __vma_release(struct dma_fence_work *work) |
| 350 | { |
| 351 | struct i915_vma_work *vw = container_of(work, typeof(*vw), base)({ const __typeof( ((typeof(*vw) *)0)->base ) *__mptr = (work ); (typeof(*vw) *)( (char *)__mptr - __builtin_offsetof(typeof (*vw), base) );}); |
| 352 | |
| 353 | if (vw->obj) |
| 354 | i915_gem_object_put(vw->obj); |
| 355 | |
| 356 | i915_vm_free_pt_stash(vw->vm, &vw->stash); |
| 357 | if (vw->vma_res) |
| 358 | i915_vma_resource_put(vw->vma_res); |
| 359 | } |
| 360 | |
| 361 | static const struct dma_fence_work_ops bind_ops = { |
| 362 | .name = "bind", |
| 363 | .work = __vma_bind, |
| 364 | .release = __vma_release, |
| 365 | }; |
| 366 | |
| 367 | struct i915_vma_work *i915_vma_work(void) |
| 368 | { |
| 369 | struct i915_vma_work *vw; |
| 370 | |
| 371 | vw = kzalloc(sizeof(*vw), GFP_KERNEL(0x0001 | 0x0004)); |
| 372 | if (!vw) |
| 373 | return NULL((void *)0); |
| 374 | |
| 375 | dma_fence_work_init(&vw->base, &bind_ops); |
| 376 | vw->base.dma.error = -EAGAIN35; /* disable the worker by default */ |
| 377 | |
| 378 | return vw; |
| 379 | } |
| 380 | |
| 381 | int i915_vma_wait_for_bind(struct i915_vma *vma) |
| 382 | { |
| 383 | int err = 0; |
| 384 | |
| 385 | if (rcu_access_pointer(vma->active.excl.fence)(vma->active.excl.fence)) { |
| 386 | struct dma_fence *fence; |
| 387 | |
| 388 | rcu_read_lock(); |
| 389 | fence = dma_fence_get_rcu_safe(&vma->active.excl.fence); |
| 390 | rcu_read_unlock(); |
| 391 | if (fence) { |
| 392 | err = dma_fence_wait(fence, true1); |
| 393 | dma_fence_put(fence); |
| 394 | } |
| 395 | } |
| 396 | |
| 397 | return err; |
| 398 | } |
| 399 | |
| 400 | #if IS_ENABLED(CONFIG_DRM_I915_DEBUG_GEM)0 |
| 401 | static int i915_vma_verify_bind_complete(struct i915_vma *vma)0 |
| 402 | { |
| 403 | struct dma_fence *fence = i915_active_fence_get(&vma->active.excl); |
| 404 | int err; |
| 405 | |
| 406 | if (!fence) |
| 407 | return 0; |
| 408 | |
| 409 | if (dma_fence_is_signaled(fence)) |
| 410 | err = fence->error; |
| 411 | else |
| 412 | err = -EBUSY16; |
| 413 | |
| 414 | dma_fence_put(fence); |
| 415 | |
| 416 | return err; |
| 417 | } |
| 418 | #else |
| 419 | #define i915_vma_verify_bind_complete(_vma)0 0 |
| 420 | #endif |
| 421 | |
| 422 | I915_SELFTEST_EXPORTstatic void |
| 423 | i915_vma_resource_init_from_vma(struct i915_vma_resource *vma_res, |
| 424 | struct i915_vma *vma) |
| 425 | { |
| 426 | struct drm_i915_gem_object *obj = vma->obj; |
| 427 | |
| 428 | i915_vma_resource_init(vma_res, vma->vm, vma->pages, &vma->page_sizes, |
| 429 | obj->mm.rsgt, i915_gem_object_is_readonly(obj), |
| 430 | i915_gem_object_is_lmem(obj), obj->mm.region, |
| 431 | vma->ops, vma->private, vma->node.start, |
| 432 | vma->node.size, vma->size); |
| 433 | } |
| 434 | |
| 435 | /** |
| 436 | * i915_vma_bind - Sets up PTEs for an VMA in it's corresponding address space. |
| 437 | * @vma: VMA to map |
| 438 | * @cache_level: mapping cache level |
| 439 | * @flags: flags like global or local mapping |
| 440 | * @work: preallocated worker for allocating and binding the PTE |
| 441 | * @vma_res: pointer to a preallocated vma resource. The resource is either |
| 442 | * consumed or freed. |
| 443 | * |
| 444 | * DMA addresses are taken from the scatter-gather table of this object (or of |
| 445 | * this VMA in case of non-default GGTT views) and PTE entries set up. |
| 446 | * Note that DMA addresses are also the only part of the SG table we care about. |
| 447 | */ |
| 448 | int i915_vma_bind(struct i915_vma *vma, |
| 449 | enum i915_cache_level cache_level, |
| 450 | u32 flags, |
| 451 | struct i915_vma_work *work, |
| 452 | struct i915_vma_resource *vma_res) |
| 453 | { |
| 454 | u32 bind_flags; |
| 455 | u32 vma_flags; |
| 456 | int ret; |
| 457 | |
| 458 | lockdep_assert_held(&vma->vm->mutex)do { (void)(&vma->vm->mutex); } while(0); |
| 459 | GEM_BUG_ON(!drm_mm_node_allocated(&vma->node))((void)0); |
| 460 | GEM_BUG_ON(vma->size > vma->node.size)((void)0); |
| 461 | |
| 462 | if (GEM_DEBUG_WARN_ON(range_overflows(vma->node.start,({ ((void)0); 0; }) |
| 463 | vma->node.size,({ ((void)0); 0; }) |
| 464 | vma->vm->total))({ ((void)0); 0; })) { |
| 465 | i915_vma_resource_free(vma_res); |
| 466 | return -ENODEV19; |
| 467 | } |
| 468 | |
| 469 | if (GEM_DEBUG_WARN_ON(!flags)({ ((void)0); 0; })) { |
| 470 | i915_vma_resource_free(vma_res); |
| 471 | return -EINVAL22; |
| 472 | } |
| 473 | |
| 474 | bind_flags = flags; |
| 475 | bind_flags &= I915_VMA_GLOBAL_BIND((int)(1UL << (10))) | I915_VMA_LOCAL_BIND((int)(1UL << (11))); |
| 476 | |
| 477 | vma_flags = atomic_read(&vma->flags)({ typeof(*(&vma->flags)) __tmp = *(volatile typeof(*( &vma->flags)) *)&(*(&vma->flags)); membar_datadep_consumer (); __tmp; }); |
| 478 | vma_flags &= I915_VMA_GLOBAL_BIND((int)(1UL << (10))) | I915_VMA_LOCAL_BIND((int)(1UL << (11))); |
| 479 | |
| 480 | bind_flags &= ~vma_flags; |
| 481 | if (bind_flags == 0) { |
| 482 | i915_vma_resource_free(vma_res); |
| 483 | return 0; |
| 484 | } |
| 485 | |
| 486 | GEM_BUG_ON(!atomic_read(&vma->pages_count))((void)0); |
| 487 | |
| 488 | /* Wait for or await async unbinds touching our range */ |
| 489 | if (work && bind_flags & vma->vm->bind_async_flags) |
| 490 | ret = i915_vma_resource_bind_dep_await(vma->vm, |
| 491 | &work->base.chain, |
| 492 | vma->node.start, |
| 493 | vma->node.size, |
| 494 | true1, |
| 495 | GFP_NOWAIT0x0002 | |
| 496 | __GFP_RETRY_MAYFAIL0 | |
| 497 | __GFP_NOWARN0); |
| 498 | else |
| 499 | ret = i915_vma_resource_bind_dep_sync(vma->vm, vma->node.start, |
| 500 | vma->node.size, true1); |
| 501 | if (ret) { |
| 502 | i915_vma_resource_free(vma_res); |
| 503 | return ret; |
| 504 | } |
| 505 | |
| 506 | if (vma->resource || !vma_res) { |
| 507 | /* Rebinding with an additional I915_VMA_*_BIND */ |
| 508 | GEM_WARN_ON(!vma_flags)({ __builtin_expect(!!(!!(!vma_flags)), 0); }); |
| 509 | i915_vma_resource_free(vma_res); |
| 510 | } else { |
| 511 | i915_vma_resource_init_from_vma(vma_res, vma); |
| 512 | vma->resource = vma_res; |
| 513 | } |
| 514 | trace_i915_vma_bind(vma, bind_flags); |
| 515 | if (work && bind_flags & vma->vm->bind_async_flags) { |
| 516 | struct dma_fence *prev; |
| 517 | |
| 518 | work->vma_res = i915_vma_resource_get(vma->resource); |
| 519 | work->cache_level = cache_level; |
| 520 | work->flags = bind_flags; |
| 521 | |
| 522 | /* |
| 523 | * Note we only want to chain up to the migration fence on |
| 524 | * the pages (not the object itself). As we don't track that, |
| 525 | * yet, we have to use the exclusive fence instead. |
| 526 | * |
| 527 | * Also note that we do not want to track the async vma as |
| 528 | * part of the obj->resv->excl_fence as it only affects |
| 529 | * execution and not content or object's backing store lifetime. |
| 530 | */ |
| 531 | prev = i915_active_set_exclusive(&vma->active, &work->base.dma); |
| 532 | if (prev) { |
| 533 | __i915_sw_fence_await_dma_fence(&work->base.chain, |
| 534 | prev, |
| 535 | &work->cb); |
| 536 | dma_fence_put(prev); |
| 537 | } |
| 538 | |
| 539 | work->base.dma.error = 0; /* enable the queue_work() */ |
| 540 | work->obj = i915_gem_object_get(vma->obj); |
| 541 | } else { |
| 542 | ret = i915_gem_object_wait_moving_fence(vma->obj, true1); |
| 543 | if (ret) { |
| 544 | i915_vma_resource_free(vma->resource); |
| 545 | vma->resource = NULL((void *)0); |
| 546 | |
| 547 | return ret; |
| 548 | } |
| 549 | vma->ops->bind_vma(vma->vm, NULL((void *)0), vma->resource, cache_level, |
| 550 | bind_flags); |
| 551 | } |
| 552 | |
| 553 | atomic_or(bind_flags, &vma->flags)x86_atomic_setbits_u32(&vma->flags, bind_flags); |
| 554 | return 0; |
| 555 | } |
| 556 | |
| 557 | void __iomem *i915_vma_pin_iomap(struct i915_vma *vma) |
| 558 | { |
| 559 | void __iomem *ptr; |
| 560 | int err; |
| 561 | |
| 562 | if (WARN_ON_ONCE(vma->obj->flags & I915_BO_ALLOC_GPU_ONLY)({ static int __warned; int __ret = !!(vma->obj->flags & (1UL << (6))); if (__ret && !__warned) { printf ("WARNING %s failed at %s:%d\n", "vma->obj->flags & (1UL << (6))" , "/usr/src/sys/dev/pci/drm/i915/i915_vma.c", 562); __warned = 1; } __builtin_expect(!!(__ret), 0); })) |
| 563 | return IOMEM_ERR_PTR(-EINVAL22); |
| 564 | |
| 565 | GEM_BUG_ON(!i915_vma_is_ggtt(vma))((void)0); |
| 566 | GEM_BUG_ON(!i915_vma_is_bound(vma, I915_VMA_GLOBAL_BIND))((void)0); |
| 567 | GEM_BUG_ON(i915_vma_verify_bind_complete(vma))((void)0); |
| 568 | |
| 569 | ptr = READ_ONCE(vma->iomap)({ typeof(vma->iomap) __tmp = *(volatile typeof(vma->iomap ) *)&(vma->iomap); membar_datadep_consumer(); __tmp; } ); |
| 570 | if (ptr == NULL((void *)0)) { |
| 571 | /* |
| 572 | * TODO: consider just using i915_gem_object_pin_map() for lmem |
| 573 | * instead, which already supports mapping non-contiguous chunks |
| 574 | * of pages, that way we can also drop the |
| 575 | * I915_BO_ALLOC_CONTIGUOUS when allocating the object. |
| 576 | */ |
| 577 | if (i915_gem_object_is_lmem(vma->obj)) { |
| 578 | ptr = i915_gem_object_lmem_io_map(vma->obj, 0, |
| 579 | vma->obj->base.size); |
| 580 | } else if (i915_vma_is_map_and_fenceable(vma)) { |
| 581 | #ifdef __linux__ |
| 582 | ptr = io_mapping_map_wc(&i915_vm_to_ggtt(vma->vm)->iomap, |
| 583 | vma->node.start, |
| 584 | vma->node.size); |
| 585 | #else |
| 586 | { |
| 587 | struct drm_i915_privateinteldrm_softc *dev_priv = vma->vm->i915; |
| 588 | err = agp_map_subregion(dev_priv->agph, vma->node.start, |
| 589 | vma->node.size, &vma->bsh); |
| 590 | if (err) { |
| 591 | err = -err; |
| 592 | goto err; |
| 593 | } |
| 594 | ptr = bus_space_vaddr(dev_priv->bst, vma->bsh)((dev_priv->bst)->vaddr((vma->bsh))); |
| 595 | } |
| 596 | #endif |
| 597 | } else { |
| 598 | ptr = (void __iomem *) |
| 599 | i915_gem_object_pin_map(vma->obj, I915_MAP_WC); |
| 600 | if (IS_ERR(ptr)) { |
| 601 | err = PTR_ERR(ptr); |
| 602 | goto err; |
| 603 | } |
| 604 | ptr = page_pack_bits(ptr, 1)({ unsigned long __bits = (1); ((void)0); ((typeof(ptr))((unsigned long)(ptr) | __bits)); }); |
| 605 | } |
| 606 | |
| 607 | if (ptr == NULL((void *)0)) { |
| 608 | err = -ENOMEM12; |
| 609 | goto err; |
| 610 | } |
| 611 | |
| 612 | if (unlikely(cmpxchg(&vma->iomap, NULL, ptr))__builtin_expect(!!(__sync_val_compare_and_swap(&vma-> iomap, ((void *)0), ptr)), 0)) { |
| 613 | if (page_unmask_bits(ptr)((unsigned long)(ptr) & ((1UL << (12)) - 1))) |
| 614 | __i915_gem_object_release_map(vma->obj); |
| 615 | #ifdef __linux__ |
| 616 | else |
| 617 | io_mapping_unmap(ptr); |
| 618 | #endif |
| 619 | ptr = vma->iomap; |
| 620 | } |
| 621 | } |
| 622 | |
| 623 | __i915_vma_pin(vma); |
| 624 | |
| 625 | err = i915_vma_pin_fence(vma); |
| 626 | if (err) |
| 627 | goto err_unpin; |
| 628 | |
| 629 | i915_vma_set_ggtt_write(vma); |
| 630 | |
| 631 | /* NB Access through the GTT requires the device to be awake. */ |
| 632 | return page_mask_bits(ptr)({ unsigned long __v = (unsigned long)(ptr); (typeof(ptr))(__v & -(1UL << (12))); }); |
| 633 | |
| 634 | err_unpin: |
| 635 | __i915_vma_unpin(vma); |
| 636 | err: |
| 637 | return IOMEM_ERR_PTR(err); |
| 638 | } |
| 639 | |
| 640 | void i915_vma_flush_writes(struct i915_vma *vma) |
| 641 | { |
| 642 | if (i915_vma_unset_ggtt_write(vma)) |
| 643 | intel_gt_flush_ggtt_writes(vma->vm->gt); |
| 644 | } |
| 645 | |
| 646 | void i915_vma_unpin_iomap(struct i915_vma *vma) |
| 647 | { |
| 648 | GEM_BUG_ON(vma->iomap == NULL)((void)0); |
| 649 | |
| 650 | /* XXX We keep the mapping until __i915_vma_unbind()/evict() */ |
| 651 | |
| 652 | i915_vma_flush_writes(vma); |
| 653 | |
| 654 | i915_vma_unpin_fence(vma); |
| 655 | i915_vma_unpin(vma); |
| 656 | } |
| 657 | |
| 658 | void i915_vma_unpin_and_release(struct i915_vma **p_vma, unsigned int flags) |
| 659 | { |
| 660 | struct i915_vma *vma; |
| 661 | struct drm_i915_gem_object *obj; |
| 662 | |
| 663 | vma = fetch_and_zero(p_vma)({ typeof(*p_vma) __T = *(p_vma); *(p_vma) = (typeof(*p_vma)) 0; __T; }); |
| 664 | if (!vma) |
| 665 | return; |
| 666 | |
| 667 | obj = vma->obj; |
| 668 | GEM_BUG_ON(!obj)((void)0); |
| 669 | |
| 670 | i915_vma_unpin(vma); |
| 671 | |
| 672 | if (flags & I915_VMA_RELEASE_MAP(1UL << (0))) |
| 673 | i915_gem_object_unpin_map(obj); |
| 674 | |
| 675 | i915_gem_object_put(obj); |
| 676 | } |
| 677 | |
| 678 | bool_Bool i915_vma_misplaced(const struct i915_vma *vma, |
| 679 | u64 size, u64 alignment, u64 flags) |
| 680 | { |
| 681 | if (!drm_mm_node_allocated(&vma->node)) |
| 682 | return false0; |
| 683 | |
| 684 | if (test_bit(I915_VMA_ERROR_BIT12, __i915_vma_flags(vma)((unsigned long *)&(vma)->flags))) |
| 685 | return true1; |
| 686 | |
| 687 | if (vma->node.size < size) |
| 688 | return true1; |
| 689 | |
| 690 | GEM_BUG_ON(alignment && !is_power_of_2(alignment))((void)0); |
| 691 | if (alignment && !IS_ALIGNED(vma->node.start, alignment)(((vma->node.start) & ((alignment) - 1)) == 0)) |
| 692 | return true1; |
| 693 | |
| 694 | if (flags & PIN_MAPPABLE(1ULL << (3)) && !i915_vma_is_map_and_fenceable(vma)) |
| 695 | return true1; |
| 696 | |
| 697 | if (flags & PIN_OFFSET_BIAS(1ULL << (6)) && |
| 698 | vma->node.start < (flags & PIN_OFFSET_MASK-(1ULL << (12)))) |
| 699 | return true1; |
| 700 | |
| 701 | if (flags & PIN_OFFSET_FIXED(1ULL << (7)) && |
| 702 | vma->node.start != (flags & PIN_OFFSET_MASK-(1ULL << (12)))) |
| 703 | return true1; |
| 704 | |
| 705 | return false0; |
| 706 | } |
| 707 | |
| 708 | void __i915_vma_set_map_and_fenceable(struct i915_vma *vma) |
| 709 | { |
| 710 | bool_Bool mappable, fenceable; |
| 711 | |
| 712 | GEM_BUG_ON(!i915_vma_is_ggtt(vma))((void)0); |
| 713 | GEM_BUG_ON(!vma->fence_size)((void)0); |
| 714 | |
| 715 | fenceable = (vma->node.size >= vma->fence_size && |
| 716 | IS_ALIGNED(vma->node.start, vma->fence_alignment)(((vma->node.start) & ((vma->fence_alignment) - 1)) == 0)); |
| 717 | |
| 718 | mappable = vma->node.start + vma->fence_size <= i915_vm_to_ggtt(vma->vm)->mappable_end; |
| 719 | |
| 720 | if (mappable && fenceable) |
| 721 | set_bit(I915_VMA_CAN_FENCE_BIT14, __i915_vma_flags(vma)((unsigned long *)&(vma)->flags)); |
| 722 | else |
| 723 | clear_bit(I915_VMA_CAN_FENCE_BIT14, __i915_vma_flags(vma)((unsigned long *)&(vma)->flags)); |
| 724 | } |
| 725 | |
| 726 | bool_Bool i915_gem_valid_gtt_space(struct i915_vma *vma, unsigned long color) |
| 727 | { |
| 728 | struct drm_mm_node *node = &vma->node; |
| 729 | struct drm_mm_node *other; |
| 730 | |
| 731 | /* |
| 732 | * On some machines we have to be careful when putting differing types |
| 733 | * of snoopable memory together to avoid the prefetcher crossing memory |
| 734 | * domains and dying. During vm initialisation, we decide whether or not |
| 735 | * these constraints apply and set the drm_mm.color_adjust |
| 736 | * appropriately. |
| 737 | */ |
| 738 | if (!i915_vm_has_cache_coloring(vma->vm)) |
| 739 | return true1; |
| 740 | |
| 741 | /* Only valid to be called on an already inserted vma */ |
| 742 | GEM_BUG_ON(!drm_mm_node_allocated(node))((void)0); |
| 743 | GEM_BUG_ON(list_empty(&node->node_list))((void)0); |
| 744 | |
| 745 | other = list_prev_entry(node, node_list)({ const __typeof( ((typeof(*(node)) *)0)->node_list ) *__mptr = (((node)->node_list.prev)); (typeof(*(node)) *)( (char * )__mptr - __builtin_offsetof(typeof(*(node)), node_list) );}); |
| 746 | if (i915_node_color_differs(other, color) && |
| 747 | !drm_mm_hole_follows(other)) |
| 748 | return false0; |
| 749 | |
| 750 | other = list_next_entry(node, node_list)({ const __typeof( ((typeof(*(node)) *)0)->node_list ) *__mptr = (((node)->node_list.next)); (typeof(*(node)) *)( (char * )__mptr - __builtin_offsetof(typeof(*(node)), node_list) );}); |
| 751 | if (i915_node_color_differs(other, color) && |
| 752 | !drm_mm_hole_follows(node)) |
| 753 | return false0; |
| 754 | |
| 755 | return true1; |
| 756 | } |
| 757 | |
| 758 | /** |
| 759 | * i915_vma_insert - finds a slot for the vma in its address space |
| 760 | * @vma: the vma |
| 761 | * @size: requested size in bytes (can be larger than the VMA) |
| 762 | * @alignment: required alignment |
| 763 | * @flags: mask of PIN_* flags to use |
| 764 | * |
| 765 | * First we try to allocate some free space that meets the requirements for |
| 766 | * the VMA. Failiing that, if the flags permit, it will evict an old VMA, |
| 767 | * preferrably the oldest idle entry to make room for the new VMA. |
| 768 | * |
| 769 | * Returns: |
| 770 | * 0 on success, negative error code otherwise. |
| 771 | */ |
| 772 | static int |
| 773 | i915_vma_insert(struct i915_vma *vma, struct i915_gem_ww_ctx *ww, |
| 774 | u64 size, u64 alignment, u64 flags) |
| 775 | { |
| 776 | unsigned long color; |
| 777 | u64 start, end; |
| 778 | int ret; |
| 779 | |
| 780 | GEM_BUG_ON(i915_vma_is_bound(vma, I915_VMA_GLOBAL_BIND | I915_VMA_LOCAL_BIND))((void)0); |
| 781 | GEM_BUG_ON(drm_mm_node_allocated(&vma->node))((void)0); |
| 782 | |
| 783 | size = max(size, vma->size)(((size)>(vma->size))?(size):(vma->size)); |
| 784 | alignment = max(alignment, vma->display_alignment)(((alignment)>(vma->display_alignment))?(alignment):(vma ->display_alignment)); |
| 785 | if (flags & PIN_MAPPABLE(1ULL << (3))) { |
| 786 | size = max_t(typeof(size), size, vma->fence_size)({ typeof(size) __max_a = (size); typeof(size) __max_b = (vma ->fence_size); __max_a > __max_b ? __max_a : __max_b; } ); |
| 787 | alignment = max_t(typeof(alignment),({ typeof(alignment) __max_a = (alignment); typeof(alignment) __max_b = (vma->fence_alignment); __max_a > __max_b ? __max_a : __max_b; }) |
| 788 | alignment, vma->fence_alignment)({ typeof(alignment) __max_a = (alignment); typeof(alignment) __max_b = (vma->fence_alignment); __max_a > __max_b ? __max_a : __max_b; }); |
| 789 | } |
| 790 | |
| 791 | GEM_BUG_ON(!IS_ALIGNED(size, I915_GTT_PAGE_SIZE))((void)0); |
| 792 | GEM_BUG_ON(!IS_ALIGNED(alignment, I915_GTT_MIN_ALIGNMENT))((void)0); |
| 793 | GEM_BUG_ON(!is_power_of_2(alignment))((void)0); |
| 794 | |
| 795 | start = flags & PIN_OFFSET_BIAS(1ULL << (6)) ? flags & PIN_OFFSET_MASK-(1ULL << (12)) : 0; |
| 796 | GEM_BUG_ON(!IS_ALIGNED(start, I915_GTT_PAGE_SIZE))((void)0); |
| 797 | |
| 798 | end = vma->vm->total; |
| 799 | if (flags & PIN_MAPPABLE(1ULL << (3))) |
| 800 | end = min_t(u64, end, i915_vm_to_ggtt(vma->vm)->mappable_end)({ u64 __min_a = (end); u64 __min_b = (i915_vm_to_ggtt(vma-> vm)->mappable_end); __min_a < __min_b ? __min_a : __min_b ; }); |
| 801 | if (flags & PIN_ZONE_4G(1ULL << (4))) |
| 802 | end = min_t(u64, end, (1ULL << 32) - I915_GTT_PAGE_SIZE)({ u64 __min_a = (end); u64 __min_b = ((1ULL << 32) - ( 1ULL << (12))); __min_a < __min_b ? __min_a : __min_b ; }); |
| 803 | GEM_BUG_ON(!IS_ALIGNED(end, I915_GTT_PAGE_SIZE))((void)0); |
| 804 | |
| 805 | alignment = max(alignment, i915_vm_obj_min_alignment(vma->vm, vma->obj))(((alignment)>(i915_vm_obj_min_alignment(vma->vm, vma-> obj)))?(alignment):(i915_vm_obj_min_alignment(vma->vm, vma ->obj))); |
| 806 | /* |
| 807 | * for compact-pt we round up the reservation to prevent |
| 808 | * any smaller pages being used within the same PDE |
| 809 | */ |
| 810 | if (NEEDS_COMPACT_PT(vma->vm->i915)((&(vma->vm->i915)->__info)->needs_compact_pt )) |
| 811 | size = round_up(size, alignment)((((size) + ((alignment) - 1)) / (alignment)) * (alignment)); |
| 812 | |
| 813 | /* If binding the object/GGTT view requires more space than the entire |
| 814 | * aperture has, reject it early before evicting everything in a vain |
| 815 | * attempt to find space. |
| 816 | */ |
| 817 | if (size > end) { |
| 818 | DRM_DEBUG("Attempting to bind an object larger than the aperture: request=%llu > %s aperture=%llu\n",___drm_dbg(((void *)0), DRM_UT_CORE, "Attempting to bind an object larger than the aperture: request=%llu > %s aperture=%llu\n" , size, flags & (1ULL << (3)) ? "mappable" : "total" , end) |
| 819 | size, flags & PIN_MAPPABLE ? "mappable" : "total",___drm_dbg(((void *)0), DRM_UT_CORE, "Attempting to bind an object larger than the aperture: request=%llu > %s aperture=%llu\n" , size, flags & (1ULL << (3)) ? "mappable" : "total" , end) |
| 820 | end)___drm_dbg(((void *)0), DRM_UT_CORE, "Attempting to bind an object larger than the aperture: request=%llu > %s aperture=%llu\n" , size, flags & (1ULL << (3)) ? "mappable" : "total" , end); |
| 821 | return -ENOSPC28; |
| 822 | } |
| 823 | |
| 824 | color = 0; |
| 825 | |
| 826 | if (i915_vm_has_cache_coloring(vma->vm)) |
| 827 | color = vma->obj->cache_level; |
| 828 | |
| 829 | if (flags & PIN_OFFSET_FIXED(1ULL << (7))) { |
| 830 | u64 offset = flags & PIN_OFFSET_MASK-(1ULL << (12)); |
| 831 | if (!IS_ALIGNED(offset, alignment)(((offset) & ((alignment) - 1)) == 0) || |
| 832 | range_overflows(offset, size, end)({ typeof(offset) start__ = (offset); typeof(size) size__ = ( size); typeof(end) max__ = (end); (void)(&start__ == & size__); (void)(&start__ == &max__); start__ >= max__ || size__ > max__ - start__; })) |
| 833 | return -EINVAL22; |
| 834 | |
| 835 | ret = i915_gem_gtt_reserve(vma->vm, ww, &vma->node, |
| 836 | size, offset, color, |
| 837 | flags); |
| 838 | if (ret) |
| 839 | return ret; |
| 840 | } else { |
| 841 | /* |
| 842 | * We only support huge gtt pages through the 48b PPGTT, |
| 843 | * however we also don't want to force any alignment for |
| 844 | * objects which need to be tightly packed into the low 32bits. |
| 845 | * |
| 846 | * Note that we assume that GGTT are limited to 4GiB for the |
| 847 | * forseeable future. See also i915_ggtt_offset(). |
| 848 | */ |
| 849 | if (upper_32_bits(end - 1)((u32)(((end - 1) >> 16) >> 16)) && |
| 850 | vma->page_sizes.sg > I915_GTT_PAGE_SIZE(1ULL << (12))) { |
| 851 | /* |
| 852 | * We can't mix 64K and 4K PTEs in the same page-table |
| 853 | * (2M block), and so to avoid the ugliness and |
| 854 | * complexity of coloring we opt for just aligning 64K |
| 855 | * objects to 2M. |
| 856 | */ |
| 857 | u64 page_alignment = |
| 858 | rounddown_pow_of_two(vma->page_sizes.sg | |
| 859 | I915_GTT_PAGE_SIZE_2M(1ULL << (21))); |
| 860 | |
| 861 | /* |
| 862 | * Check we don't expand for the limited Global GTT |
| 863 | * (mappable aperture is even more precious!). This |
| 864 | * also checks that we exclude the aliasing-ppgtt. |
| 865 | */ |
| 866 | GEM_BUG_ON(i915_vma_is_ggtt(vma))((void)0); |
| 867 | |
| 868 | alignment = max(alignment, page_alignment)(((alignment)>(page_alignment))?(alignment):(page_alignment )); |
| 869 | |
| 870 | if (vma->page_sizes.sg & I915_GTT_PAGE_SIZE_64K(1ULL << (16))) |
| 871 | size = round_up(size, I915_GTT_PAGE_SIZE_2M)((((size) + (((1ULL << (21))) - 1)) / ((1ULL << ( 21)))) * ((1ULL << (21)))); |
| 872 | } |
| 873 | |
| 874 | ret = i915_gem_gtt_insert(vma->vm, ww, &vma->node, |
| 875 | size, alignment, color, |
| 876 | start, end, flags); |
| 877 | if (ret) |
| 878 | return ret; |
| 879 | |
| 880 | GEM_BUG_ON(vma->node.start < start)((void)0); |
| 881 | GEM_BUG_ON(vma->node.start + vma->node.size > end)((void)0); |
| 882 | } |
| 883 | GEM_BUG_ON(!drm_mm_node_allocated(&vma->node))((void)0); |
| 884 | GEM_BUG_ON(!i915_gem_valid_gtt_space(vma, color))((void)0); |
| 885 | |
| 886 | list_move_tail(&vma->vm_link, &vma->vm->bound_list); |
| 887 | |
| 888 | return 0; |
| 889 | } |
| 890 | |
| 891 | static void |
| 892 | i915_vma_detach(struct i915_vma *vma) |
| 893 | { |
| 894 | GEM_BUG_ON(!drm_mm_node_allocated(&vma->node))((void)0); |
| 895 | GEM_BUG_ON(i915_vma_is_bound(vma, I915_VMA_GLOBAL_BIND | I915_VMA_LOCAL_BIND))((void)0); |
| 896 | |
| 897 | /* |
| 898 | * And finally now the object is completely decoupled from this |
| 899 | * vma, we can drop its hold on the backing storage and allow |
| 900 | * it to be reaped by the shrinker. |
| 901 | */ |
| 902 | list_move_tail(&vma->vm_link, &vma->vm->unbound_list); |
| 903 | } |
| 904 | |
| 905 | static bool_Bool try_qad_pin(struct i915_vma *vma, unsigned int flags) |
| 906 | { |
| 907 | unsigned int bound; |
| 908 | |
| 909 | bound = atomic_read(&vma->flags)({ typeof(*(&vma->flags)) __tmp = *(volatile typeof(*( &vma->flags)) *)&(*(&vma->flags)); membar_datadep_consumer (); __tmp; }); |
| 910 | |
| 911 | if (flags & PIN_VALIDATE(1ULL << (8))) { |
| 912 | flags &= I915_VMA_BIND_MASK(((int)(1UL << (10))) | ((int)(1UL << (11)))); |
| 913 | |
| 914 | return (flags & bound) == flags; |
| 915 | } |
| 916 | |
| 917 | /* with the lock mandatory for unbind, we don't race here */ |
| 918 | flags &= I915_VMA_BIND_MASK(((int)(1UL << (10))) | ((int)(1UL << (11)))); |
| 919 | do { |
| 920 | if (unlikely(flags & ~bound)__builtin_expect(!!(flags & ~bound), 0)) |
| 921 | return false0; |
| 922 | |
| 923 | if (unlikely(bound & (I915_VMA_OVERFLOW | I915_VMA_ERROR))__builtin_expect(!!(bound & (0x200 | ((int)(1UL << ( 12))))), 0)) |
| 924 | return false0; |
| 925 | |
| 926 | GEM_BUG_ON(((bound + 1) & I915_VMA_PIN_MASK) == 0)((void)0); |
| 927 | } while (!atomic_try_cmpxchg(&vma->flags, &bound, bound + 1)); |
| 928 | |
| 929 | return true1; |
| 930 | } |
| 931 | |
| 932 | static struct scatterlist * |
| 933 | rotate_pages(struct drm_i915_gem_object *obj, unsigned int offset, |
| 934 | unsigned int width, unsigned int height, |
| 935 | unsigned int src_stride, unsigned int dst_stride, |
| 936 | struct sg_table *st, struct scatterlist *sg) |
| 937 | { |
| 938 | unsigned int column, row; |
| 939 | unsigned int src_idx; |
| 940 | |
| 941 | for (column = 0; column < width; column++) { |
| 942 | unsigned int left; |
| 943 | |
| 944 | src_idx = src_stride * (height - 1) + column + offset; |
| 945 | for (row = 0; row < height; row++) { |
| 946 | st->nents++; |
| 947 | /* |
| 948 | * We don't need the pages, but need to initialize |
| 949 | * the entries so the sg list can be happily traversed. |
| 950 | * The only thing we need are DMA addresses. |
| 951 | */ |
| 952 | sg_set_page(sg, NULL((void *)0), I915_GTT_PAGE_SIZE(1ULL << (12)), 0); |
| 953 | sg_dma_address(sg)((sg)->dma_address) = |
| 954 | i915_gem_object_get_dma_address(obj, src_idx); |
| 955 | sg_dma_len(sg)((sg)->length) = I915_GTT_PAGE_SIZE(1ULL << (12)); |
| 956 | sg = sg_next(sg); |
| 957 | src_idx -= src_stride; |
| 958 | } |
| 959 | |
| 960 | left = (dst_stride - height) * I915_GTT_PAGE_SIZE(1ULL << (12)); |
| 961 | |
| 962 | if (!left) |
| 963 | continue; |
| 964 | |
| 965 | st->nents++; |
| 966 | |
| 967 | /* |
| 968 | * The DE ignores the PTEs for the padding tiles, the sg entry |
| 969 | * here is just a conenience to indicate how many padding PTEs |
| 970 | * to insert at this spot. |
| 971 | */ |
| 972 | sg_set_page(sg, NULL((void *)0), left, 0); |
| 973 | sg_dma_address(sg)((sg)->dma_address) = 0; |
| 974 | sg_dma_len(sg)((sg)->length) = left; |
| 975 | sg = sg_next(sg); |
| 976 | } |
| 977 | |
| 978 | return sg; |
| 979 | } |
| 980 | |
| 981 | static noinline__attribute__((__noinline__)) struct sg_table * |
| 982 | intel_rotate_pages(struct intel_rotation_info *rot_info, |
| 983 | struct drm_i915_gem_object *obj) |
| 984 | { |
| 985 | unsigned int size = intel_rotation_info_size(rot_info); |
| 986 | struct drm_i915_privateinteldrm_softc *i915 = to_i915(obj->base.dev); |
| 987 | struct sg_table *st; |
| 988 | struct scatterlist *sg; |
| 989 | int ret = -ENOMEM12; |
| 990 | int i; |
| 991 | |
| 992 | /* Allocate target SG list. */ |
| 993 | st = kmalloc(sizeof(*st), GFP_KERNEL(0x0001 | 0x0004)); |
| 994 | if (!st) |
| 995 | goto err_st_alloc; |
| 996 | |
| 997 | ret = sg_alloc_table(st, size, GFP_KERNEL(0x0001 | 0x0004)); |
| 998 | if (ret) |
| 999 | goto err_sg_alloc; |
| 1000 | |
| 1001 | st->nents = 0; |
| 1002 | sg = st->sgl; |
| 1003 | |
| 1004 | for (i = 0 ; i < ARRAY_SIZE(rot_info->plane)(sizeof((rot_info->plane)) / sizeof((rot_info->plane)[0 ])); i++) |
| 1005 | sg = rotate_pages(obj, rot_info->plane[i].offset, |
| 1006 | rot_info->plane[i].width, rot_info->plane[i].height, |
| 1007 | rot_info->plane[i].src_stride, |
| 1008 | rot_info->plane[i].dst_stride, |
| 1009 | st, sg); |
| 1010 | |
| 1011 | return st; |
| 1012 | |
| 1013 | err_sg_alloc: |
| 1014 | kfree(st); |
| 1015 | err_st_alloc: |
| 1016 | |
| 1017 | drm_dbg(&i915->drm, "Failed to create rotated mapping for object size %zu! (%ux%u tiles, %u pages)\n",__drm_dev_dbg(((void *)0), (&i915->drm) ? (&i915-> drm)->dev : ((void *)0), DRM_UT_DRIVER, "Failed to create rotated mapping for object size %zu! (%ux%u tiles, %u pages)\n" , obj->base.size, rot_info->plane[0].width, rot_info-> plane[0].height, size) |
| 1018 | obj->base.size, rot_info->plane[0].width,__drm_dev_dbg(((void *)0), (&i915->drm) ? (&i915-> drm)->dev : ((void *)0), DRM_UT_DRIVER, "Failed to create rotated mapping for object size %zu! (%ux%u tiles, %u pages)\n" , obj->base.size, rot_info->plane[0].width, rot_info-> plane[0].height, size) |
| 1019 | rot_info->plane[0].height, size)__drm_dev_dbg(((void *)0), (&i915->drm) ? (&i915-> drm)->dev : ((void *)0), DRM_UT_DRIVER, "Failed to create rotated mapping for object size %zu! (%ux%u tiles, %u pages)\n" , obj->base.size, rot_info->plane[0].width, rot_info-> plane[0].height, size); |
| 1020 | |
| 1021 | return ERR_PTR(ret); |
| 1022 | } |
| 1023 | |
| 1024 | static struct scatterlist * |
| 1025 | add_padding_pages(unsigned int count, |
| 1026 | struct sg_table *st, struct scatterlist *sg) |
| 1027 | { |
| 1028 | st->nents++; |
| 1029 | |
| 1030 | /* |
| 1031 | * The DE ignores the PTEs for the padding tiles, the sg entry |
| 1032 | * here is just a convenience to indicate how many padding PTEs |
| 1033 | * to insert at this spot. |
| 1034 | */ |
| 1035 | sg_set_page(sg, NULL((void *)0), count * I915_GTT_PAGE_SIZE(1ULL << (12)), 0); |
| 1036 | sg_dma_address(sg)((sg)->dma_address) = 0; |
| 1037 | sg_dma_len(sg)((sg)->length) = count * I915_GTT_PAGE_SIZE(1ULL << (12)); |
| 1038 | sg = sg_next(sg); |
| 1039 | |
| 1040 | return sg; |
| 1041 | } |
| 1042 | |
| 1043 | static struct scatterlist * |
| 1044 | remap_tiled_color_plane_pages(struct drm_i915_gem_object *obj, |
| 1045 | unsigned int offset, unsigned int alignment_pad, |
| 1046 | unsigned int width, unsigned int height, |
| 1047 | unsigned int src_stride, unsigned int dst_stride, |
| 1048 | struct sg_table *st, struct scatterlist *sg, |
| 1049 | unsigned int *gtt_offset) |
| 1050 | { |
| 1051 | unsigned int row; |
| 1052 | |
| 1053 | if (!width || !height) |
| 1054 | return sg; |
| 1055 | |
| 1056 | if (alignment_pad) |
| 1057 | sg = add_padding_pages(alignment_pad, st, sg); |
| 1058 | |
| 1059 | for (row = 0; row < height; row++) { |
| 1060 | unsigned int left = width * I915_GTT_PAGE_SIZE(1ULL << (12)); |
| 1061 | |
| 1062 | while (left) { |
| 1063 | dma_addr_t addr; |
| 1064 | unsigned int length; |
| 1065 | |
| 1066 | /* |
| 1067 | * We don't need the pages, but need to initialize |
| 1068 | * the entries so the sg list can be happily traversed. |
| 1069 | * The only thing we need are DMA addresses. |
| 1070 | */ |
| 1071 | |
| 1072 | addr = i915_gem_object_get_dma_address_len(obj, offset, &length); |
| 1073 | |
| 1074 | length = min(left, length)(((left)<(length))?(left):(length)); |
| 1075 | |
| 1076 | st->nents++; |
| 1077 | |
| 1078 | sg_set_page(sg, NULL((void *)0), length, 0); |
| 1079 | sg_dma_address(sg)((sg)->dma_address) = addr; |
| 1080 | sg_dma_len(sg)((sg)->length) = length; |
| 1081 | sg = sg_next(sg); |
| 1082 | |
| 1083 | offset += length / I915_GTT_PAGE_SIZE(1ULL << (12)); |
| 1084 | left -= length; |
| 1085 | } |
| 1086 | |
| 1087 | offset += src_stride - width; |
| 1088 | |
| 1089 | left = (dst_stride - width) * I915_GTT_PAGE_SIZE(1ULL << (12)); |
| 1090 | |
| 1091 | if (!left) |
| 1092 | continue; |
| 1093 | |
| 1094 | sg = add_padding_pages(left >> PAGE_SHIFT12, st, sg); |
| 1095 | } |
| 1096 | |
| 1097 | *gtt_offset += alignment_pad + dst_stride * height; |
| 1098 | |
| 1099 | return sg; |
| 1100 | } |
| 1101 | |
| 1102 | static struct scatterlist * |
| 1103 | remap_contiguous_pages(struct drm_i915_gem_object *obj, |
| 1104 | unsigned int obj_offset, |
| 1105 | unsigned int count, |
| 1106 | struct sg_table *st, struct scatterlist *sg) |
| 1107 | { |
| 1108 | struct scatterlist *iter; |
| 1109 | unsigned int offset; |
| 1110 | |
| 1111 | iter = i915_gem_object_get_sg_dma(obj, obj_offset, &offset); |
| 1112 | GEM_BUG_ON(!iter)((void)0); |
| 1113 | |
| 1114 | do { |
| 1115 | unsigned int len; |
| 1116 | |
| 1117 | len = min(sg_dma_len(iter) - (offset << PAGE_SHIFT),(((((iter)->length) - (offset << 12))<(count << 12))?(((iter)->length) - (offset << 12)):(count << 12)) |
| 1118 | count << PAGE_SHIFT)(((((iter)->length) - (offset << 12))<(count << 12))?(((iter)->length) - (offset << 12)):(count << 12)); |
| 1119 | sg_set_page(sg, NULL((void *)0), len, 0); |
| 1120 | sg_dma_address(sg)((sg)->dma_address) = |
| 1121 | sg_dma_address(iter)((iter)->dma_address) + (offset << PAGE_SHIFT12); |
| 1122 | sg_dma_len(sg)((sg)->length) = len; |
| 1123 | |
| 1124 | st->nents++; |
| 1125 | count -= len >> PAGE_SHIFT12; |
| 1126 | if (count == 0) |
| 1127 | return sg; |
| 1128 | |
| 1129 | sg = __sg_next(sg); |
| 1130 | iter = __sg_next(iter); |
| 1131 | offset = 0; |
| 1132 | } while (1); |
| 1133 | } |
| 1134 | |
| 1135 | static struct scatterlist * |
| 1136 | remap_linear_color_plane_pages(struct drm_i915_gem_object *obj, |
| 1137 | unsigned int obj_offset, unsigned int alignment_pad, |
| 1138 | unsigned int size, |
| 1139 | struct sg_table *st, struct scatterlist *sg, |
| 1140 | unsigned int *gtt_offset) |
| 1141 | { |
| 1142 | if (!size) |
| 1143 | return sg; |
| 1144 | |
| 1145 | if (alignment_pad) |
| 1146 | sg = add_padding_pages(alignment_pad, st, sg); |
| 1147 | |
| 1148 | sg = remap_contiguous_pages(obj, obj_offset, size, st, sg); |
| 1149 | sg = sg_next(sg); |
| 1150 | |
| 1151 | *gtt_offset += alignment_pad + size; |
| 1152 | |
| 1153 | return sg; |
| 1154 | } |
| 1155 | |
| 1156 | static struct scatterlist * |
| 1157 | remap_color_plane_pages(const struct intel_remapped_info *rem_info, |
| 1158 | struct drm_i915_gem_object *obj, |
| 1159 | int color_plane, |
| 1160 | struct sg_table *st, struct scatterlist *sg, |
| 1161 | unsigned int *gtt_offset) |
| 1162 | { |
| 1163 | unsigned int alignment_pad = 0; |
| 1164 | |
| 1165 | if (rem_info->plane_alignment) |
| 1166 | alignment_pad = roundup2(*gtt_offset, rem_info->plane_alignment)(((*gtt_offset) + ((rem_info->plane_alignment) - 1)) & (~((__typeof(*gtt_offset))(rem_info->plane_alignment) - 1 ))) - *gtt_offset; |
| 1167 | |
| 1168 | if (rem_info->plane[color_plane].linear) |
| 1169 | sg = remap_linear_color_plane_pages(obj, |
| 1170 | rem_info->plane[color_plane].offset, |
| 1171 | alignment_pad, |
| 1172 | rem_info->plane[color_plane].size, |
| 1173 | st, sg, |
| 1174 | gtt_offset); |
| 1175 | |
| 1176 | else |
| 1177 | sg = remap_tiled_color_plane_pages(obj, |
| 1178 | rem_info->plane[color_plane].offset, |
| 1179 | alignment_pad, |
| 1180 | rem_info->plane[color_plane].width, |
| 1181 | rem_info->plane[color_plane].height, |
| 1182 | rem_info->plane[color_plane].src_stride, |
| 1183 | rem_info->plane[color_plane].dst_stride, |
| 1184 | st, sg, |
| 1185 | gtt_offset); |
| 1186 | |
| 1187 | return sg; |
| 1188 | } |
| 1189 | |
| 1190 | static noinline__attribute__((__noinline__)) struct sg_table * |
| 1191 | intel_remap_pages(struct intel_remapped_info *rem_info, |
| 1192 | struct drm_i915_gem_object *obj) |
| 1193 | { |
| 1194 | unsigned int size = intel_remapped_info_size(rem_info); |
| 1195 | struct drm_i915_privateinteldrm_softc *i915 = to_i915(obj->base.dev); |
| 1196 | struct sg_table *st; |
| 1197 | struct scatterlist *sg; |
| 1198 | unsigned int gtt_offset = 0; |
| 1199 | int ret = -ENOMEM12; |
| 1200 | int i; |
| 1201 | |
| 1202 | /* Allocate target SG list. */ |
| 1203 | st = kmalloc(sizeof(*st), GFP_KERNEL(0x0001 | 0x0004)); |
| 1204 | if (!st) |
| 1205 | goto err_st_alloc; |
| 1206 | |
| 1207 | ret = sg_alloc_table(st, size, GFP_KERNEL(0x0001 | 0x0004)); |
| 1208 | if (ret) |
| 1209 | goto err_sg_alloc; |
| 1210 | |
| 1211 | st->nents = 0; |
| 1212 | sg = st->sgl; |
| 1213 | |
| 1214 | for (i = 0 ; i < ARRAY_SIZE(rem_info->plane)(sizeof((rem_info->plane)) / sizeof((rem_info->plane)[0 ])); i++) |
| 1215 | sg = remap_color_plane_pages(rem_info, obj, i, st, sg, >t_offset); |
| 1216 | |
| 1217 | i915_sg_trim(st); |
| 1218 | |
| 1219 | return st; |
| 1220 | |
| 1221 | err_sg_alloc: |
| 1222 | kfree(st); |
| 1223 | err_st_alloc: |
| 1224 | |
| 1225 | drm_dbg(&i915->drm, "Failed to create remapped mapping for object size %zu! (%ux%u tiles, %u pages)\n",__drm_dev_dbg(((void *)0), (&i915->drm) ? (&i915-> drm)->dev : ((void *)0), DRM_UT_DRIVER, "Failed to create remapped mapping for object size %zu! (%ux%u tiles, %u pages)\n" , obj->base.size, rem_info->plane[0].width, rem_info-> plane[0].height, size) |
| 1226 | obj->base.size, rem_info->plane[0].width,__drm_dev_dbg(((void *)0), (&i915->drm) ? (&i915-> drm)->dev : ((void *)0), DRM_UT_DRIVER, "Failed to create remapped mapping for object size %zu! (%ux%u tiles, %u pages)\n" , obj->base.size, rem_info->plane[0].width, rem_info-> plane[0].height, size) |
| 1227 | rem_info->plane[0].height, size)__drm_dev_dbg(((void *)0), (&i915->drm) ? (&i915-> drm)->dev : ((void *)0), DRM_UT_DRIVER, "Failed to create remapped mapping for object size %zu! (%ux%u tiles, %u pages)\n" , obj->base.size, rem_info->plane[0].width, rem_info-> plane[0].height, size); |
| 1228 | |
| 1229 | return ERR_PTR(ret); |
| 1230 | } |
| 1231 | |
| 1232 | static noinline__attribute__((__noinline__)) struct sg_table * |
| 1233 | intel_partial_pages(const struct i915_gtt_view *view, |
| 1234 | struct drm_i915_gem_object *obj) |
| 1235 | { |
| 1236 | struct sg_table *st; |
| 1237 | struct scatterlist *sg; |
| 1238 | unsigned int count = view->partial.size; |
| 1239 | int ret = -ENOMEM12; |
| 1240 | |
| 1241 | st = kmalloc(sizeof(*st), GFP_KERNEL(0x0001 | 0x0004)); |
| 1242 | if (!st) |
| 1243 | goto err_st_alloc; |
| 1244 | |
| 1245 | ret = sg_alloc_table(st, count, GFP_KERNEL(0x0001 | 0x0004)); |
| 1246 | if (ret) |
| 1247 | goto err_sg_alloc; |
| 1248 | |
| 1249 | st->nents = 0; |
| 1250 | |
| 1251 | sg = remap_contiguous_pages(obj, view->partial.offset, count, st, st->sgl); |
| 1252 | |
| 1253 | sg_mark_end(sg); |
| 1254 | i915_sg_trim(st); /* Drop any unused tail entries. */ |
| 1255 | |
| 1256 | return st; |
| 1257 | |
| 1258 | err_sg_alloc: |
| 1259 | kfree(st); |
| 1260 | err_st_alloc: |
| 1261 | return ERR_PTR(ret); |
| 1262 | } |
| 1263 | |
| 1264 | static int |
| 1265 | __i915_vma_get_pages(struct i915_vma *vma) |
| 1266 | { |
| 1267 | struct sg_table *pages; |
| 1268 | |
| 1269 | /* |
| 1270 | * The vma->pages are only valid within the lifespan of the borrowed |
| 1271 | * obj->mm.pages. When the obj->mm.pages sg_table is regenerated, so |
| 1272 | * must be the vma->pages. A simple rule is that vma->pages must only |
| 1273 | * be accessed when the obj->mm.pages are pinned. |
| 1274 | */ |
| 1275 | GEM_BUG_ON(!i915_gem_object_has_pinned_pages(vma->obj))((void)0); |
| 1276 | |
| 1277 | switch (vma->gtt_view.type) { |
| 1278 | default: |
| 1279 | GEM_BUG_ON(vma->gtt_view.type)((void)0); |
| 1280 | fallthroughdo {} while (0); |
| 1281 | case I915_GTT_VIEW_NORMAL: |
| 1282 | pages = vma->obj->mm.pages; |
| 1283 | break; |
| 1284 | |
| 1285 | case I915_GTT_VIEW_ROTATED: |
| 1286 | pages = |
| 1287 | intel_rotate_pages(&vma->gtt_view.rotated, vma->obj); |
| 1288 | break; |
| 1289 | |
| 1290 | case I915_GTT_VIEW_REMAPPED: |
| 1291 | pages = |
| 1292 | intel_remap_pages(&vma->gtt_view.remapped, vma->obj); |
| 1293 | break; |
| 1294 | |
| 1295 | case I915_GTT_VIEW_PARTIAL: |
| 1296 | pages = intel_partial_pages(&vma->gtt_view, vma->obj); |
| 1297 | break; |
| 1298 | } |
| 1299 | |
| 1300 | if (IS_ERR(pages)) { |
| 1301 | drm_err(&vma->vm->i915->drm,printf("drm:pid%d:%s *ERROR* " "[drm] " "*ERROR* " "Failed to get pages for VMA view type %u (%ld)!\n" , ({struct cpu_info *__ci; asm volatile("movq %%gs:%P1,%0" : "=r" (__ci) :"n" (__builtin_offsetof(struct cpu_info, ci_self))); __ci;})->ci_curproc->p_p->ps_pid, __func__ , vma-> gtt_view.type, PTR_ERR(pages)) |
| 1302 | "Failed to get pages for VMA view type %u (%ld)!\n",printf("drm:pid%d:%s *ERROR* " "[drm] " "*ERROR* " "Failed to get pages for VMA view type %u (%ld)!\n" , ({struct cpu_info *__ci; asm volatile("movq %%gs:%P1,%0" : "=r" (__ci) :"n" (__builtin_offsetof(struct cpu_info, ci_self))); __ci;})->ci_curproc->p_p->ps_pid, __func__ , vma-> gtt_view.type, PTR_ERR(pages)) |
| 1303 | vma->gtt_view.type, PTR_ERR(pages))printf("drm:pid%d:%s *ERROR* " "[drm] " "*ERROR* " "Failed to get pages for VMA view type %u (%ld)!\n" , ({struct cpu_info *__ci; asm volatile("movq %%gs:%P1,%0" : "=r" (__ci) :"n" (__builtin_offsetof(struct cpu_info, ci_self))); __ci;})->ci_curproc->p_p->ps_pid, __func__ , vma-> gtt_view.type, PTR_ERR(pages)); |
| 1304 | return PTR_ERR(pages); |
| 1305 | } |
| 1306 | |
| 1307 | vma->pages = pages; |
| 1308 | |
| 1309 | return 0; |
| 1310 | } |
| 1311 | |
| 1312 | I915_SELFTEST_EXPORTstatic int i915_vma_get_pages(struct i915_vma *vma) |
| 1313 | { |
| 1314 | int err; |
| 1315 | |
| 1316 | if (atomic_add_unless(&vma->pages_count, 1, 0)) |
| 1317 | return 0; |
| 1318 | |
| 1319 | err = i915_gem_object_pin_pages(vma->obj); |
| 1320 | if (err) |
| 1321 | return err; |
| 1322 | |
| 1323 | err = __i915_vma_get_pages(vma); |
| 1324 | if (err) |
| 1325 | goto err_unpin; |
| 1326 | |
| 1327 | vma->page_sizes = vma->obj->mm.page_sizes; |
| 1328 | atomic_inc(&vma->pages_count)__sync_fetch_and_add(&vma->pages_count, 1); |
| 1329 | |
| 1330 | return 0; |
| 1331 | |
| 1332 | err_unpin: |
| 1333 | __i915_gem_object_unpin_pages(vma->obj); |
| 1334 | |
| 1335 | return err; |
| 1336 | } |
| 1337 | |
| 1338 | void vma_invalidate_tlb(struct i915_address_space *vm, u32 *tlb) |
| 1339 | { |
| 1340 | /* |
| 1341 | * Before we release the pages that were bound by this vma, we |
| 1342 | * must invalidate all the TLBs that may still have a reference |
| 1343 | * back to our physical address. It only needs to be done once, |
| 1344 | * so after updating the PTE to point away from the pages, record |
| 1345 | * the most recent TLB invalidation seqno, and if we have not yet |
| 1346 | * flushed the TLBs upon release, perform a full invalidation. |
| 1347 | */ |
| 1348 | WRITE_ONCE(*tlb, intel_gt_next_invalidate_tlb_full(vm->gt))({ typeof(*tlb) __tmp = (intel_gt_next_invalidate_tlb_full(vm ->gt)); *(volatile typeof(*tlb) *)&(*tlb) = __tmp; __tmp ; }); |
| 1349 | } |
| 1350 | |
| 1351 | static void __vma_put_pages(struct i915_vma *vma, unsigned int count) |
| 1352 | { |
| 1353 | /* We allocate under vma_get_pages, so beware the shrinker */ |
| 1354 | GEM_BUG_ON(atomic_read(&vma->pages_count) < count)((void)0); |
| 1355 | |
| 1356 | if (atomic_sub_return(count, &vma->pages_count)__sync_sub_and_fetch(&vma->pages_count, count) == 0) { |
| 1357 | if (vma->pages != vma->obj->mm.pages) { |
| 1358 | sg_free_table(vma->pages); |
| 1359 | kfree(vma->pages); |
| 1360 | } |
| 1361 | vma->pages = NULL((void *)0); |
| 1362 | |
| 1363 | i915_gem_object_unpin_pages(vma->obj); |
| 1364 | } |
| 1365 | } |
| 1366 | |
| 1367 | I915_SELFTEST_EXPORTstatic void i915_vma_put_pages(struct i915_vma *vma) |
| 1368 | { |
| 1369 | if (atomic_add_unless(&vma->pages_count, -1, 1)) |
| 1370 | return; |
| 1371 | |
| 1372 | __vma_put_pages(vma, 1); |
| 1373 | } |
| 1374 | |
| 1375 | static void vma_unbind_pages(struct i915_vma *vma) |
| 1376 | { |
| 1377 | unsigned int count; |
| 1378 | |
| 1379 | lockdep_assert_held(&vma->vm->mutex)do { (void)(&vma->vm->mutex); } while(0); |
| 1380 | |
| 1381 | /* The upper portion of pages_count is the number of bindings */ |
| 1382 | count = atomic_read(&vma->pages_count)({ typeof(*(&vma->pages_count)) __tmp = *(volatile typeof (*(&vma->pages_count)) *)&(*(&vma->pages_count )); membar_datadep_consumer(); __tmp; }); |
| 1383 | count >>= I915_VMA_PAGES_BIAS24; |
| 1384 | GEM_BUG_ON(!count)((void)0); |
| 1385 | |
| 1386 | __vma_put_pages(vma, count | count << I915_VMA_PAGES_BIAS24); |
| 1387 | } |
| 1388 | |
| 1389 | int i915_vma_pin_ww(struct i915_vma *vma, struct i915_gem_ww_ctx *ww, |
| 1390 | u64 size, u64 alignment, u64 flags) |
| 1391 | { |
| 1392 | struct i915_vma_work *work = NULL((void *)0); |
| 1393 | struct dma_fence *moving = NULL((void *)0); |
| 1394 | struct i915_vma_resource *vma_res = NULL((void *)0); |
| 1395 | intel_wakeref_t wakeref = 0; |
| 1396 | unsigned int bound; |
| 1397 | int err; |
| 1398 | |
| 1399 | assert_vma_held(vma)do { (void)(&((vma)->obj->base.resv)->lock.base) ; } while(0); |
| 1400 | GEM_BUG_ON(!ww)((void)0); |
| 1401 | |
| 1402 | BUILD_BUG_ON(PIN_GLOBAL != I915_VMA_GLOBAL_BIND)extern char _ctassert[(!((1ULL << (10)) != ((int)(1UL << (10))))) ? 1 : -1 ] __attribute__((__unused__)); |
| 1403 | BUILD_BUG_ON(PIN_USER != I915_VMA_LOCAL_BIND)extern char _ctassert[(!((1ULL << (11)) != ((int)(1UL << (11))))) ? 1 : -1 ] __attribute__((__unused__)); |
| 1404 | |
| 1405 | GEM_BUG_ON(!(flags & (PIN_USER | PIN_GLOBAL)))((void)0); |
| 1406 | |
| 1407 | /* First try and grab the pin without rebinding the vma */ |
| 1408 | if (try_qad_pin(vma, flags)) |
| 1409 | return 0; |
| 1410 | |
| 1411 | err = i915_vma_get_pages(vma); |
| 1412 | if (err) |
| 1413 | return err; |
| 1414 | |
| 1415 | if (flags & PIN_GLOBAL(1ULL << (10))) |
| 1416 | wakeref = intel_runtime_pm_get(&vma->vm->i915->runtime_pm); |
| 1417 | |
| 1418 | if (flags & vma->vm->bind_async_flags) { |
| 1419 | /* lock VM */ |
| 1420 | err = i915_vm_lock_objects(vma->vm, ww); |
| 1421 | if (err) |
| 1422 | goto err_rpm; |
| 1423 | |
| 1424 | work = i915_vma_work(); |
| 1425 | if (!work) { |
| 1426 | err = -ENOMEM12; |
| 1427 | goto err_rpm; |
| 1428 | } |
| 1429 | |
| 1430 | work->vm = vma->vm; |
| 1431 | |
| 1432 | err = i915_gem_object_get_moving_fence(vma->obj, &moving); |
| 1433 | if (err) |
| 1434 | goto err_rpm; |
| 1435 | |
| 1436 | dma_fence_work_chain(&work->base, moving); |
| 1437 | |
| 1438 | /* Allocate enough page directories to used PTE */ |
| 1439 | if (vma->vm->allocate_va_range) { |
| 1440 | err = i915_vm_alloc_pt_stash(vma->vm, |
| 1441 | &work->stash, |
| 1442 | vma->size); |
| 1443 | if (err) |
| 1444 | goto err_fence; |
| 1445 | |
| 1446 | err = i915_vm_map_pt_stash(vma->vm, &work->stash); |
| 1447 | if (err) |
| 1448 | goto err_fence; |
| 1449 | } |
| 1450 | } |
| 1451 | |
| 1452 | vma_res = i915_vma_resource_alloc(); |
| 1453 | if (IS_ERR(vma_res)) { |
| 1454 | err = PTR_ERR(vma_res); |
| 1455 | goto err_fence; |
| 1456 | } |
| 1457 | |
| 1458 | /* |
| 1459 | * Differentiate between user/kernel vma inside the aliasing-ppgtt. |
| 1460 | * |
| 1461 | * We conflate the Global GTT with the user's vma when using the |
| 1462 | * aliasing-ppgtt, but it is still vitally important to try and |
| 1463 | * keep the use cases distinct. For example, userptr objects are |
| 1464 | * not allowed inside the Global GTT as that will cause lock |
| 1465 | * inversions when we have to evict them the mmu_notifier callbacks - |
| 1466 | * but they are allowed to be part of the user ppGTT which can never |
| 1467 | * be mapped. As such we try to give the distinct users of the same |
| 1468 | * mutex, distinct lockclasses [equivalent to how we keep i915_ggtt |
| 1469 | * and i915_ppgtt separate]. |
| 1470 | * |
| 1471 | * NB this may cause us to mask real lock inversions -- while the |
| 1472 | * code is safe today, lockdep may not be able to spot future |
| 1473 | * transgressions. |
| 1474 | */ |
| 1475 | err = mutex_lock_interruptible_nested(&vma->vm->mutex,mutex_lock_interruptible(&vma->vm->mutex) |
| 1476 | !(flags & PIN_GLOBAL))mutex_lock_interruptible(&vma->vm->mutex); |
| 1477 | if (err) |
| 1478 | goto err_vma_res; |
| 1479 | |
| 1480 | /* No more allocations allowed now we hold vm->mutex */ |
| 1481 | |
| 1482 | if (unlikely(i915_vma_is_closed(vma))__builtin_expect(!!(i915_vma_is_closed(vma)), 0)) { |
| 1483 | err = -ENOENT2; |
| 1484 | goto err_unlock; |
| 1485 | } |
| 1486 | |
| 1487 | bound = atomic_read(&vma->flags)({ typeof(*(&vma->flags)) __tmp = *(volatile typeof(*( &vma->flags)) *)&(*(&vma->flags)); membar_datadep_consumer (); __tmp; }); |
| 1488 | if (unlikely(bound & I915_VMA_ERROR)__builtin_expect(!!(bound & ((int)(1UL << (12)))), 0 )) { |
| 1489 | err = -ENOMEM12; |
| 1490 | goto err_unlock; |
| 1491 | } |
| 1492 | |
| 1493 | if (unlikely(!((bound + 1) & I915_VMA_PIN_MASK))__builtin_expect(!!(!((bound + 1) & 0x3ff)), 0)) { |
| 1494 | err = -EAGAIN35; /* pins are meant to be fairly temporary */ |
| 1495 | goto err_unlock; |
| 1496 | } |
| 1497 | |
| 1498 | if (unlikely(!(flags & ~bound & I915_VMA_BIND_MASK))__builtin_expect(!!(!(flags & ~bound & (((int)(1UL << (10))) | ((int)(1UL << (11)))))), 0)) { |
| 1499 | if (!(flags & PIN_VALIDATE(1ULL << (8)))) |
| 1500 | __i915_vma_pin(vma); |
| 1501 | goto err_unlock; |
| 1502 | } |
| 1503 | |
| 1504 | err = i915_active_acquire(&vma->active); |
| 1505 | if (err) |
| 1506 | goto err_unlock; |
| 1507 | |
| 1508 | if (!(bound & I915_VMA_BIND_MASK(((int)(1UL << (10))) | ((int)(1UL << (11)))))) { |
| 1509 | err = i915_vma_insert(vma, ww, size, alignment, flags); |
| 1510 | if (err) |
| 1511 | goto err_active; |
| 1512 | |
| 1513 | if (i915_is_ggtt(vma->vm)((vma->vm)->is_ggtt)) |
| 1514 | __i915_vma_set_map_and_fenceable(vma); |
| 1515 | } |
| 1516 | |
| 1517 | GEM_BUG_ON(!vma->pages)((void)0); |
| 1518 | err = i915_vma_bind(vma, |
| 1519 | vma->obj->cache_level, |
| 1520 | flags, work, vma_res); |
| 1521 | vma_res = NULL((void *)0); |
| 1522 | if (err) |
| 1523 | goto err_remove; |
| 1524 | |
| 1525 | /* There should only be at most 2 active bindings (user, global) */ |
| 1526 | GEM_BUG_ON(bound + I915_VMA_PAGES_ACTIVE < bound)((void)0); |
| 1527 | atomic_add(I915_VMA_PAGES_ACTIVE, &vma->pages_count)__sync_fetch_and_add(&vma->pages_count, ((1UL << (24)) | 1)); |
| 1528 | list_move_tail(&vma->vm_link, &vma->vm->bound_list); |
| 1529 | |
| 1530 | if (!(flags & PIN_VALIDATE(1ULL << (8)))) { |
| 1531 | __i915_vma_pin(vma); |
| 1532 | GEM_BUG_ON(!i915_vma_is_pinned(vma))((void)0); |
| 1533 | } |
| 1534 | GEM_BUG_ON(!i915_vma_is_bound(vma, flags))((void)0); |
| 1535 | GEM_BUG_ON(i915_vma_misplaced(vma, size, alignment, flags))((void)0); |
| 1536 | |
| 1537 | err_remove: |
| 1538 | if (!i915_vma_is_bound(vma, I915_VMA_BIND_MASK(((int)(1UL << (10))) | ((int)(1UL << (11)))))) { |
| 1539 | i915_vma_detach(vma); |
| 1540 | drm_mm_remove_node(&vma->node); |
| 1541 | } |
| 1542 | err_active: |
| 1543 | i915_active_release(&vma->active); |
| 1544 | err_unlock: |
| 1545 | mutex_unlock(&vma->vm->mutex)rw_exit_write(&vma->vm->mutex); |
| 1546 | err_vma_res: |
| 1547 | i915_vma_resource_free(vma_res); |
| 1548 | err_fence: |
| 1549 | if (work) |
| 1550 | dma_fence_work_commit_imm(&work->base); |
| 1551 | err_rpm: |
| 1552 | if (wakeref) |
| 1553 | intel_runtime_pm_put(&vma->vm->i915->runtime_pm, wakeref); |
| 1554 | |
| 1555 | if (moving) |
| 1556 | dma_fence_put(moving); |
| 1557 | |
| 1558 | i915_vma_put_pages(vma); |
| 1559 | return err; |
| 1560 | } |
| 1561 | |
| 1562 | static void flush_idle_contexts(struct intel_gt *gt) |
| 1563 | { |
| 1564 | struct intel_engine_cs *engine; |
| 1565 | enum intel_engine_id id; |
| 1566 | |
| 1567 | for_each_engine(engine, gt, id)for ((id) = 0; (id) < I915_NUM_ENGINES; (id)++) if (!((engine ) = (gt)->engine[(id)])) {} else |
| 1568 | intel_engine_flush_barriers(engine); |
| 1569 | |
| 1570 | intel_gt_wait_for_idle(gt, MAX_SCHEDULE_TIMEOUT(0x7fffffff)); |
| 1571 | } |
| 1572 | |
| 1573 | static int __i915_ggtt_pin(struct i915_vma *vma, struct i915_gem_ww_ctx *ww, |
| 1574 | u32 align, unsigned int flags) |
| 1575 | { |
| 1576 | struct i915_address_space *vm = vma->vm; |
| 1577 | int err; |
| 1578 | |
| 1579 | do { |
| 1580 | err = i915_vma_pin_ww(vma, ww, 0, align, flags | PIN_GLOBAL(1ULL << (10))); |
| 1581 | |
| 1582 | if (err != -ENOSPC28) { |
| 1583 | if (!err) { |
| 1584 | err = i915_vma_wait_for_bind(vma); |
| 1585 | if (err) |
| 1586 | i915_vma_unpin(vma); |
| 1587 | } |
| 1588 | return err; |
| 1589 | } |
| 1590 | |
| 1591 | /* Unlike i915_vma_pin, we don't take no for an answer! */ |
| 1592 | flush_idle_contexts(vm->gt); |
| 1593 | if (mutex_lock_interruptible(&vm->mutex) == 0) { |
| 1594 | /* |
| 1595 | * We pass NULL ww here, as we don't want to unbind |
| 1596 | * locked objects when called from execbuf when pinning |
| 1597 | * is removed. This would probably regress badly. |
| 1598 | */ |
| 1599 | i915_gem_evict_vm(vm, NULL((void *)0), NULL((void *)0)); |
| 1600 | mutex_unlock(&vm->mutex)rw_exit_write(&vm->mutex); |
| 1601 | } |
| 1602 | } while (1); |
| 1603 | } |
| 1604 | |
| 1605 | int i915_ggtt_pin(struct i915_vma *vma, struct i915_gem_ww_ctx *ww, |
| 1606 | u32 align, unsigned int flags) |
| 1607 | { |
| 1608 | struct i915_gem_ww_ctx _ww; |
| 1609 | int err; |
| 1610 | |
| 1611 | GEM_BUG_ON(!i915_vma_is_ggtt(vma))((void)0); |
| 1612 | |
| 1613 | if (ww) |
| 1614 | return __i915_ggtt_pin(vma, ww, align, flags); |
| 1615 | |
| 1616 | lockdep_assert_not_held(&vma->obj->base.resv->lock.base)do { (void)(&vma->obj->base.resv->lock.base); } while (0); |
| 1617 | |
| 1618 | for_i915_gem_ww(&_ww, err, true)for (i915_gem_ww_ctx_init(&_ww, 1), (err) = -11; (err) == -11; (err) = __i915_gem_ww_fini(&_ww, err)) { |
| 1619 | err = i915_gem_object_lock(vma->obj, &_ww); |
| 1620 | if (!err) |
| 1621 | err = __i915_ggtt_pin(vma, &_ww, align, flags); |
| 1622 | } |
| 1623 | |
| 1624 | return err; |
| 1625 | } |
| 1626 | |
| 1627 | static void __vma_close(struct i915_vma *vma, struct intel_gt *gt) |
| 1628 | { |
| 1629 | /* |
| 1630 | * We defer actually closing, unbinding and destroying the VMA until |
| 1631 | * the next idle point, or if the object is freed in the meantime. By |
| 1632 | * postponing the unbind, we allow for it to be resurrected by the |
| 1633 | * client, avoiding the work required to rebind the VMA. This is |
| 1634 | * advantageous for DRI, where the client/server pass objects |
| 1635 | * between themselves, temporarily opening a local VMA to the |
| 1636 | * object, and then closing it again. The same object is then reused |
| 1637 | * on the next frame (or two, depending on the depth of the swap queue) |
| 1638 | * causing us to rebind the VMA once more. This ends up being a lot |
| 1639 | * of wasted work for the steady state. |
| 1640 | */ |
| 1641 | GEM_BUG_ON(i915_vma_is_closed(vma))((void)0); |
| 1642 | list_add(&vma->closed_link, >->closed_vma); |
| 1643 | } |
| 1644 | |
| 1645 | void i915_vma_close(struct i915_vma *vma) |
| 1646 | { |
| 1647 | struct intel_gt *gt = vma->vm->gt; |
| 1648 | unsigned long flags; |
| 1649 | |
| 1650 | if (i915_vma_is_ggtt(vma)) |
| 1651 | return; |
| 1652 | |
| 1653 | GEM_BUG_ON(!atomic_read(&vma->open_count))((void)0); |
| 1654 | if (atomic_dec_and_lock_irqsave(&vma->open_count,atomic_dec_and_lock(&vma->open_count, >->closed_lock ) |
| 1655 | >->closed_lock,atomic_dec_and_lock(&vma->open_count, >->closed_lock ) |
| 1656 | flags)atomic_dec_and_lock(&vma->open_count, >->closed_lock )) { |
| 1657 | __vma_close(vma, gt); |
| 1658 | spin_unlock_irqrestore(>->closed_lock, flags)do { (void)(flags); mtx_leave(>->closed_lock); } while (0); |
| 1659 | } |
| 1660 | } |
| 1661 | |
| 1662 | static void __i915_vma_remove_closed(struct i915_vma *vma) |
| 1663 | { |
| 1664 | list_del_init(&vma->closed_link); |
| 1665 | } |
| 1666 | |
| 1667 | void i915_vma_reopen(struct i915_vma *vma) |
| 1668 | { |
| 1669 | struct intel_gt *gt = vma->vm->gt; |
| 1670 | |
| 1671 | spin_lock_irq(>->closed_lock)mtx_enter(>->closed_lock); |
| 1672 | if (i915_vma_is_closed(vma)) |
| 1673 | __i915_vma_remove_closed(vma); |
| 1674 | spin_unlock_irq(>->closed_lock)mtx_leave(>->closed_lock); |
| 1675 | } |
| 1676 | |
| 1677 | static void force_unbind(struct i915_vma *vma) |
| 1678 | { |
| 1679 | if (!drm_mm_node_allocated(&vma->node)) |
| 1680 | return; |
| 1681 | |
| 1682 | atomic_and(~I915_VMA_PIN_MASK, &vma->flags)__sync_fetch_and_and(&vma->flags, ~0x3ff); |
| 1683 | WARN_ON(__i915_vma_unbind(vma))({ int __ret = !!(__i915_vma_unbind(vma)); if (__ret) printf( "WARNING %s failed at %s:%d\n", "__i915_vma_unbind(vma)", "/usr/src/sys/dev/pci/drm/i915/i915_vma.c" , 1683); __builtin_expect(!!(__ret), 0); }); |
| 1684 | GEM_BUG_ON(drm_mm_node_allocated(&vma->node))((void)0); |
| 1685 | } |
| 1686 | |
| 1687 | static void release_references(struct i915_vma *vma, struct intel_gt *gt, |
| 1688 | bool_Bool vm_ddestroy) |
| 1689 | { |
| 1690 | struct drm_i915_gem_object *obj = vma->obj; |
| 1691 | |
| 1692 | GEM_BUG_ON(i915_vma_is_active(vma))((void)0); |
| 1693 | |
| 1694 | spin_lock(&obj->vma.lock)mtx_enter(&obj->vma.lock); |
| 1695 | list_del(&vma->obj_link); |
| 1696 | if (!RB_EMPTY_NODE(&vma->obj_node)((&vma->obj_node)->__entry.rbe_parent == &vma-> obj_node)) |
| 1697 | rb_erase(&vma->obj_node, &obj->vma.tree)linux_root_RB_REMOVE((struct linux_root *)(&obj->vma.tree ), (&vma->obj_node)); |
| 1698 | |
| 1699 | spin_unlock(&obj->vma.lock)mtx_leave(&obj->vma.lock); |
| 1700 | |
| 1701 | spin_lock_irq(>->closed_lock)mtx_enter(>->closed_lock); |
| 1702 | __i915_vma_remove_closed(vma); |
| 1703 | spin_unlock_irq(>->closed_lock)mtx_leave(>->closed_lock); |
| 1704 | |
| 1705 | if (vm_ddestroy) |
| 1706 | i915_vm_resv_put(vma->vm); |
| 1707 | |
| 1708 | i915_active_fini(&vma->active); |
| 1709 | GEM_WARN_ON(vma->resource)({ __builtin_expect(!!(!!(vma->resource)), 0); }); |
| 1710 | i915_vma_free(vma); |
| 1711 | } |
| 1712 | |
| 1713 | /** |
| 1714 | * i915_vma_destroy_locked - Remove all weak reference to the vma and put |
| 1715 | * the initial reference. |
| 1716 | * |
| 1717 | * This function should be called when it's decided the vma isn't needed |
| 1718 | * anymore. The caller must assure that it doesn't race with another lookup |
| 1719 | * plus destroy, typically by taking an appropriate reference. |
| 1720 | * |
| 1721 | * Current callsites are |
| 1722 | * - __i915_gem_object_pages_fini() |
| 1723 | * - __i915_vm_close() - Blocks the above function by taking a reference on |
| 1724 | * the object. |
| 1725 | * - __i915_vma_parked() - Blocks the above functions by taking a reference |
| 1726 | * on the vm and a reference on the object. Also takes the object lock so |
| 1727 | * destruction from __i915_vma_parked() can be blocked by holding the |
| 1728 | * object lock. Since the object lock is only allowed from within i915 with |
| 1729 | * an object refcount, holding the object lock also implicitly blocks the |
| 1730 | * vma freeing from __i915_gem_object_pages_fini(). |
| 1731 | * |
| 1732 | * Because of locks taken during destruction, a vma is also guaranteed to |
| 1733 | * stay alive while the following locks are held if it was looked up while |
| 1734 | * holding one of the locks: |
| 1735 | * - vm->mutex |
| 1736 | * - obj->vma.lock |
| 1737 | * - gt->closed_lock |
| 1738 | */ |
| 1739 | void i915_vma_destroy_locked(struct i915_vma *vma) |
| 1740 | { |
| 1741 | lockdep_assert_held(&vma->vm->mutex)do { (void)(&vma->vm->mutex); } while(0); |
| 1742 | |
| 1743 | force_unbind(vma); |
| 1744 | list_del_init(&vma->vm_link); |
| 1745 | release_references(vma, vma->vm->gt, false0); |
| 1746 | } |
| 1747 | |
| 1748 | void i915_vma_destroy(struct i915_vma *vma) |
| 1749 | { |
| 1750 | struct intel_gt *gt; |
| 1751 | bool_Bool vm_ddestroy; |
| 1752 | |
| 1753 | mutex_lock(&vma->vm->mutex)rw_enter_write(&vma->vm->mutex); |
| 1754 | force_unbind(vma); |
| 1755 | list_del_init(&vma->vm_link); |
| 1756 | vm_ddestroy = vma->vm_ddestroy; |
| 1757 | vma->vm_ddestroy = false0; |
| 1758 | |
| 1759 | /* vma->vm may be freed when releasing vma->vm->mutex. */ |
| 1760 | gt = vma->vm->gt; |
| 1761 | mutex_unlock(&vma->vm->mutex)rw_exit_write(&vma->vm->mutex); |
| 1762 | release_references(vma, gt, vm_ddestroy); |
| 1763 | } |
| 1764 | |
| 1765 | void i915_vma_parked(struct intel_gt *gt) |
| 1766 | { |
| 1767 | struct i915_vma *vma, *next; |
| 1768 | DRM_LIST_HEAD(closed)struct list_head closed = { &(closed), &(closed) }; |
| 1769 | |
| 1770 | spin_lock_irq(>->closed_lock)mtx_enter(>->closed_lock); |
| 1771 | list_for_each_entry_safe(vma, next, >->closed_vma, closed_link)for (vma = ({ const __typeof( ((__typeof(*vma) *)0)->closed_link ) *__mptr = ((>->closed_vma)->next); (__typeof(* vma) *)( (char *)__mptr - __builtin_offsetof(__typeof(*vma), closed_link ) );}), next = ({ const __typeof( ((__typeof(*vma) *)0)->closed_link ) *__mptr = (vma->closed_link.next); (__typeof(*vma) *)( ( char *)__mptr - __builtin_offsetof(__typeof(*vma), closed_link ) );}); &vma->closed_link != (>->closed_vma); vma = next, next = ({ const __typeof( ((__typeof(*next) *)0) ->closed_link ) *__mptr = (next->closed_link.next); (__typeof (*next) *)( (char *)__mptr - __builtin_offsetof(__typeof(*next ), closed_link) );})) { |
| 1772 | struct drm_i915_gem_object *obj = vma->obj; |
| 1773 | struct i915_address_space *vm = vma->vm; |
| 1774 | |
| 1775 | /* XXX All to avoid keeping a reference on i915_vma itself */ |
| 1776 | |
| 1777 | if (!kref_get_unless_zero(&obj->base.refcount)) |
| 1778 | continue; |
| 1779 | |
| 1780 | if (!i915_vm_tryget(vm)) { |
| 1781 | i915_gem_object_put(obj); |
| 1782 | continue; |
| 1783 | } |
| 1784 | |
| 1785 | list_move(&vma->closed_link, &closed); |
| 1786 | } |
| 1787 | spin_unlock_irq(>->closed_lock)mtx_leave(>->closed_lock); |
| 1788 | |
| 1789 | /* As the GT is held idle, no vma can be reopened as we destroy them */ |
| 1790 | list_for_each_entry_safe(vma, next, &closed, closed_link)for (vma = ({ const __typeof( ((__typeof(*vma) *)0)->closed_link ) *__mptr = ((&closed)->next); (__typeof(*vma) *)( (char *)__mptr - __builtin_offsetof(__typeof(*vma), closed_link) ) ;}), next = ({ const __typeof( ((__typeof(*vma) *)0)->closed_link ) *__mptr = (vma->closed_link.next); (__typeof(*vma) *)( ( char *)__mptr - __builtin_offsetof(__typeof(*vma), closed_link ) );}); &vma->closed_link != (&closed); vma = next , next = ({ const __typeof( ((__typeof(*next) *)0)->closed_link ) *__mptr = (next->closed_link.next); (__typeof(*next) *) ( (char *)__mptr - __builtin_offsetof(__typeof(*next), closed_link ) );})) { |
| 1791 | struct drm_i915_gem_object *obj = vma->obj; |
| 1792 | struct i915_address_space *vm = vma->vm; |
| 1793 | |
| 1794 | if (i915_gem_object_trylock(obj, NULL((void *)0))) { |
| 1795 | INIT_LIST_HEAD(&vma->closed_link); |
| 1796 | i915_vma_destroy(vma); |
| 1797 | i915_gem_object_unlock(obj); |
| 1798 | } else { |
| 1799 | /* back you go.. */ |
| 1800 | spin_lock_irq(>->closed_lock)mtx_enter(>->closed_lock); |
| 1801 | list_add(&vma->closed_link, >->closed_vma); |
| 1802 | spin_unlock_irq(>->closed_lock)mtx_leave(>->closed_lock); |
| 1803 | } |
| 1804 | |
| 1805 | i915_gem_object_put(obj); |
| 1806 | i915_vm_put(vm); |
| 1807 | } |
| 1808 | } |
| 1809 | |
| 1810 | static void __i915_vma_iounmap(struct i915_vma *vma) |
| 1811 | { |
| 1812 | GEM_BUG_ON(i915_vma_is_pinned(vma))((void)0); |
| 1813 | |
| 1814 | if (vma->iomap == NULL((void *)0)) |
| 1815 | return; |
| 1816 | |
| 1817 | if (page_unmask_bits(vma->iomap)((unsigned long)(vma->iomap) & ((1UL << (12)) - 1 ))) |
| 1818 | __i915_gem_object_release_map(vma->obj); |
| 1819 | else { |
| 1820 | #ifdef __linux__ |
| 1821 | io_mapping_unmap(vma->iomap); |
| 1822 | #else |
| 1823 | struct drm_i915_privateinteldrm_softc *dev_priv = vma->vm->i915; |
| 1824 | agp_unmap_subregion(dev_priv->agph, vma->bsh, vma->node.size); |
| 1825 | #endif |
| 1826 | } |
| 1827 | vma->iomap = NULL((void *)0); |
| 1828 | } |
| 1829 | |
| 1830 | void i915_vma_revoke_mmap(struct i915_vma *vma) |
| 1831 | { |
| 1832 | struct drm_vma_offset_node *node; |
| 1833 | u64 vma_offset; |
| 1834 | |
| 1835 | if (!i915_vma_has_userfault(vma)) |
| 1836 | return; |
| 1837 | |
| 1838 | GEM_BUG_ON(!i915_vma_is_map_and_fenceable(vma))((void)0); |
| 1839 | GEM_BUG_ON(!vma->obj->userfault_count)((void)0); |
| 1840 | |
| 1841 | node = &vma->mmo->vma_node; |
Value stored to 'node' is never read | |
| 1842 | vma_offset = vma->gtt_view.partial.offset << PAGE_SHIFT12; |
| 1843 | #ifdef __linux__ |
| 1844 | unmap_mapping_range(vma->vm->i915->drm.anon_inode->i_mapping, |
| 1845 | drm_vma_node_offset_addr(node) + vma_offset, |
| 1846 | vma->size, |
| 1847 | 1); |
| 1848 | #else |
| 1849 | struct drm_i915_privateinteldrm_softc *dev_priv = vma->obj->base.dev->dev_private; |
| 1850 | struct vm_page *pg; |
| 1851 | |
| 1852 | for (pg = &dev_priv->pgs[atop(vma->node.start)((vma->node.start) >> 12)]; |
| 1853 | pg != &dev_priv->pgs[atop(vma->node.start + vma->size)((vma->node.start + vma->size) >> 12)]; |
| 1854 | pg++) |
| 1855 | pmap_page_protect(pg, PROT_NONE0x00); |
| 1856 | #endif |
| 1857 | |
| 1858 | i915_vma_unset_userfault(vma); |
| 1859 | if (!--vma->obj->userfault_count) |
| 1860 | list_del(&vma->obj->userfault_link); |
| 1861 | } |
| 1862 | |
| 1863 | static int |
| 1864 | __i915_request_await_bind(struct i915_request *rq, struct i915_vma *vma) |
| 1865 | { |
| 1866 | return __i915_request_await_exclusive(rq, &vma->active); |
| 1867 | } |
| 1868 | |
| 1869 | static int __i915_vma_move_to_active(struct i915_vma *vma, struct i915_request *rq) |
| 1870 | { |
| 1871 | int err; |
| 1872 | |
| 1873 | /* Wait for the vma to be bound before we start! */ |
| 1874 | err = __i915_request_await_bind(rq, vma); |
| 1875 | if (err) |
| 1876 | return err; |
| 1877 | |
| 1878 | return i915_active_add_request(&vma->active, rq); |
| 1879 | } |
| 1880 | |
| 1881 | int _i915_vma_move_to_active(struct i915_vma *vma, |
| 1882 | struct i915_request *rq, |
| 1883 | struct dma_fence *fence, |
| 1884 | unsigned int flags) |
| 1885 | { |
| 1886 | struct drm_i915_gem_object *obj = vma->obj; |
| 1887 | int err; |
| 1888 | |
| 1889 | assert_object_held(obj)do { (void)(&((obj)->base.resv)->lock.base); } while (0); |
| 1890 | |
| 1891 | GEM_BUG_ON(!vma->pages)((void)0); |
| 1892 | |
| 1893 | err = __i915_vma_move_to_active(vma, rq); |
| 1894 | if (unlikely(err)__builtin_expect(!!(err), 0)) |
| 1895 | return err; |
| 1896 | |
| 1897 | /* |
| 1898 | * Reserve fences slot early to prevent an allocation after preparing |
| 1899 | * the workload and associating fences with dma_resv. |
| 1900 | */ |
| 1901 | if (fence && !(flags & __EXEC_OBJECT_NO_RESERVE(1UL << (31)))) { |
| 1902 | struct dma_fence *curr; |
| 1903 | int idx; |
| 1904 | |
| 1905 | dma_fence_array_for_each(curr, idx, fence)for (idx = 0, curr = dma_fence_array_first(fence); curr != (( void *)0); ++(idx), curr = dma_fence_array_next(fence, idx)) |
| 1906 | ; |
| 1907 | err = dma_resv_reserve_fences(vma->obj->base.resv, idx); |
| 1908 | if (unlikely(err)__builtin_expect(!!(err), 0)) |
| 1909 | return err; |
| 1910 | } |
| 1911 | |
| 1912 | if (flags & EXEC_OBJECT_WRITE(1<<2)) { |
| 1913 | struct intel_frontbuffer *front; |
| 1914 | |
| 1915 | front = __intel_frontbuffer_get(obj); |
| 1916 | if (unlikely(front)__builtin_expect(!!(front), 0)) { |
| 1917 | if (intel_frontbuffer_invalidate(front, ORIGIN_CS)) |
| 1918 | i915_active_add_request(&front->write, rq); |
| 1919 | intel_frontbuffer_put(front); |
| 1920 | } |
| 1921 | } |
| 1922 | |
| 1923 | if (fence) { |
| 1924 | struct dma_fence *curr; |
| 1925 | enum dma_resv_usage usage; |
| 1926 | int idx; |
| 1927 | |
| 1928 | if (flags & EXEC_OBJECT_WRITE(1<<2)) { |
| 1929 | usage = DMA_RESV_USAGE_WRITE; |
| 1930 | obj->write_domain = I915_GEM_DOMAIN_RENDER0x00000002; |
| 1931 | obj->read_domains = 0; |
| 1932 | } else { |
| 1933 | usage = DMA_RESV_USAGE_READ; |
| 1934 | obj->write_domain = 0; |
| 1935 | } |
| 1936 | |
| 1937 | dma_fence_array_for_each(curr, idx, fence)for (idx = 0, curr = dma_fence_array_first(fence); curr != (( void *)0); ++(idx), curr = dma_fence_array_next(fence, idx)) |
| 1938 | dma_resv_add_fence(vma->obj->base.resv, curr, usage); |
| 1939 | } |
| 1940 | |
| 1941 | if (flags & EXEC_OBJECT_NEEDS_FENCE(1<<0) && vma->fence) |
| 1942 | i915_active_add_request(&vma->fence->active, rq); |
| 1943 | |
| 1944 | obj->read_domains |= I915_GEM_GPU_DOMAINS(0x00000002 | 0x00000004 | 0x00000008 | 0x00000010 | 0x00000020 ); |
| 1945 | obj->mm.dirty = true1; |
| 1946 | |
| 1947 | GEM_BUG_ON(!i915_vma_is_active(vma))((void)0); |
| 1948 | return 0; |
| 1949 | } |
| 1950 | |
| 1951 | struct dma_fence *__i915_vma_evict(struct i915_vma *vma, bool_Bool async) |
| 1952 | { |
| 1953 | struct i915_vma_resource *vma_res = vma->resource; |
| 1954 | struct dma_fence *unbind_fence; |
| 1955 | |
| 1956 | GEM_BUG_ON(i915_vma_is_pinned(vma))((void)0); |
| 1957 | assert_vma_held_evict(vma); |
| 1958 | |
| 1959 | if (i915_vma_is_map_and_fenceable(vma)) { |
| 1960 | /* Force a pagefault for domain tracking on next user access */ |
| 1961 | i915_vma_revoke_mmap(vma); |
| 1962 | |
| 1963 | /* |
| 1964 | * Check that we have flushed all writes through the GGTT |
| 1965 | * before the unbind, other due to non-strict nature of those |
| 1966 | * indirect writes they may end up referencing the GGTT PTE |
| 1967 | * after the unbind. |
| 1968 | * |
| 1969 | * Note that we may be concurrently poking at the GGTT_WRITE |
| 1970 | * bit from set-domain, as we mark all GGTT vma associated |
| 1971 | * with an object. We know this is for another vma, as we |
| 1972 | * are currently unbinding this one -- so if this vma will be |
| 1973 | * reused, it will be refaulted and have its dirty bit set |
| 1974 | * before the next write. |
| 1975 | */ |
| 1976 | i915_vma_flush_writes(vma); |
| 1977 | |
| 1978 | /* release the fence reg _after_ flushing */ |
| 1979 | i915_vma_revoke_fence(vma); |
| 1980 | |
| 1981 | clear_bit(I915_VMA_CAN_FENCE_BIT14, __i915_vma_flags(vma)((unsigned long *)&(vma)->flags)); |
| 1982 | } |
| 1983 | |
| 1984 | __i915_vma_iounmap(vma); |
| 1985 | |
| 1986 | GEM_BUG_ON(vma->fence)((void)0); |
| 1987 | GEM_BUG_ON(i915_vma_has_userfault(vma))((void)0); |
| 1988 | |
| 1989 | /* Object backend must be async capable. */ |
| 1990 | GEM_WARN_ON(async && !vma->resource->bi.pages_rsgt)({ __builtin_expect(!!(!!(async && !vma->resource-> bi.pages_rsgt)), 0); }); |
| 1991 | |
| 1992 | /* If vm is not open, unbind is a nop. */ |
| 1993 | vma_res->needs_wakeref = i915_vma_is_bound(vma, I915_VMA_GLOBAL_BIND((int)(1UL << (10)))) && |
| 1994 | kref_read(&vma->vm->ref); |
| 1995 | vma_res->skip_pte_rewrite = !kref_read(&vma->vm->ref) || |
| 1996 | vma->vm->skip_pte_rewrite; |
| 1997 | trace_i915_vma_unbind(vma); |
| 1998 | |
| 1999 | if (async) |
| 2000 | unbind_fence = i915_vma_resource_unbind(vma_res, |
| 2001 | &vma->obj->mm.tlb); |
| 2002 | else |
| 2003 | unbind_fence = i915_vma_resource_unbind(vma_res, NULL((void *)0)); |
| 2004 | |
| 2005 | vma->resource = NULL((void *)0); |
| 2006 | |
| 2007 | atomic_and(~(I915_VMA_BIND_MASK | I915_VMA_ERROR | I915_VMA_GGTT_WRITE),__sync_fetch_and_and(&vma->flags, ~((((int)(1UL << (10))) | ((int)(1UL << (11)))) | ((int)(1UL << ( 12))) | ((int)(1UL << (16))))) |
| 2008 | &vma->flags)__sync_fetch_and_and(&vma->flags, ~((((int)(1UL << (10))) | ((int)(1UL << (11)))) | ((int)(1UL << ( 12))) | ((int)(1UL << (16))))); |
| 2009 | |
| 2010 | i915_vma_detach(vma); |
| 2011 | |
| 2012 | if (!async) { |
| 2013 | if (unbind_fence) { |
| 2014 | dma_fence_wait(unbind_fence, false0); |
| 2015 | dma_fence_put(unbind_fence); |
| 2016 | unbind_fence = NULL((void *)0); |
| 2017 | } |
| 2018 | vma_invalidate_tlb(vma->vm, &vma->obj->mm.tlb); |
| 2019 | } |
| 2020 | |
| 2021 | /* |
| 2022 | * Binding itself may not have completed until the unbind fence signals, |
| 2023 | * so don't drop the pages until that happens, unless the resource is |
| 2024 | * async_capable. |
| 2025 | */ |
| 2026 | |
| 2027 | vma_unbind_pages(vma); |
| 2028 | return unbind_fence; |
| 2029 | } |
| 2030 | |
| 2031 | int __i915_vma_unbind(struct i915_vma *vma) |
| 2032 | { |
| 2033 | int ret; |
| 2034 | |
| 2035 | lockdep_assert_held(&vma->vm->mutex)do { (void)(&vma->vm->mutex); } while(0); |
| 2036 | assert_vma_held_evict(vma); |
| 2037 | |
| 2038 | if (!drm_mm_node_allocated(&vma->node)) |
| 2039 | return 0; |
| 2040 | |
| 2041 | if (i915_vma_is_pinned(vma)) { |
| 2042 | vma_print_allocator(vma, "is pinned"); |
| 2043 | return -EAGAIN35; |
| 2044 | } |
| 2045 | |
| 2046 | /* |
| 2047 | * After confirming that no one else is pinning this vma, wait for |
| 2048 | * any laggards who may have crept in during the wait (through |
| 2049 | * a residual pin skipping the vm->mutex) to complete. |
| 2050 | */ |
| 2051 | ret = i915_vma_sync(vma); |
| 2052 | if (ret) |
| 2053 | return ret; |
| 2054 | |
| 2055 | GEM_BUG_ON(i915_vma_is_active(vma))((void)0); |
| 2056 | __i915_vma_evict(vma, false0); |
| 2057 | |
| 2058 | drm_mm_remove_node(&vma->node); /* pairs with i915_vma_release() */ |
| 2059 | return 0; |
| 2060 | } |
| 2061 | |
| 2062 | static struct dma_fence *__i915_vma_unbind_async(struct i915_vma *vma) |
| 2063 | { |
| 2064 | struct dma_fence *fence; |
| 2065 | |
| 2066 | lockdep_assert_held(&vma->vm->mutex)do { (void)(&vma->vm->mutex); } while(0); |
| 2067 | |
| 2068 | if (!drm_mm_node_allocated(&vma->node)) |
| 2069 | return NULL((void *)0); |
| 2070 | |
| 2071 | if (i915_vma_is_pinned(vma) || |
| 2072 | &vma->obj->mm.rsgt->table != vma->resource->bi.pages) |
| 2073 | return ERR_PTR(-EAGAIN35); |
| 2074 | |
| 2075 | /* |
| 2076 | * We probably need to replace this with awaiting the fences of the |
| 2077 | * object's dma_resv when the vma active goes away. When doing that |
| 2078 | * we need to be careful to not add the vma_resource unbind fence |
| 2079 | * immediately to the object's dma_resv, because then unbinding |
| 2080 | * the next vma from the object, in case there are many, will |
| 2081 | * actually await the unbinding of the previous vmas, which is |
| 2082 | * undesirable. |
| 2083 | */ |
| 2084 | if (i915_sw_fence_await_active(&vma->resource->chain, &vma->active, |
| 2085 | I915_ACTIVE_AWAIT_EXCL(1UL << (0)) | |
| 2086 | I915_ACTIVE_AWAIT_ACTIVE(1UL << (1))) < 0) { |
| 2087 | return ERR_PTR(-EBUSY16); |
| 2088 | } |
| 2089 | |
| 2090 | fence = __i915_vma_evict(vma, true1); |
| 2091 | |
| 2092 | drm_mm_remove_node(&vma->node); /* pairs with i915_vma_release() */ |
| 2093 | |
| 2094 | return fence; |
| 2095 | } |
| 2096 | |
| 2097 | int i915_vma_unbind(struct i915_vma *vma) |
| 2098 | { |
| 2099 | struct i915_address_space *vm = vma->vm; |
| 2100 | intel_wakeref_t wakeref = 0; |
| 2101 | int err; |
| 2102 | |
| 2103 | assert_object_held_shared(vma->obj); |
| 2104 | |
| 2105 | /* Optimistic wait before taking the mutex */ |
| 2106 | err = i915_vma_sync(vma); |
| 2107 | if (err) |
| 2108 | return err; |
| 2109 | |
| 2110 | if (!drm_mm_node_allocated(&vma->node)) |
| 2111 | return 0; |
| 2112 | |
| 2113 | if (i915_vma_is_pinned(vma)) { |
| 2114 | vma_print_allocator(vma, "is pinned"); |
| 2115 | return -EAGAIN35; |
| 2116 | } |
| 2117 | |
| 2118 | if (i915_vma_is_bound(vma, I915_VMA_GLOBAL_BIND((int)(1UL << (10))))) |
| 2119 | /* XXX not always required: nop_clear_range */ |
| 2120 | wakeref = intel_runtime_pm_get(&vm->i915->runtime_pm); |
| 2121 | |
| 2122 | err = mutex_lock_interruptible_nested(&vma->vm->mutex, !wakeref)mutex_lock_interruptible(&vma->vm->mutex); |
| 2123 | if (err) |
| 2124 | goto out_rpm; |
| 2125 | |
| 2126 | err = __i915_vma_unbind(vma); |
| 2127 | mutex_unlock(&vm->mutex)rw_exit_write(&vm->mutex); |
| 2128 | |
| 2129 | out_rpm: |
| 2130 | if (wakeref) |
| 2131 | intel_runtime_pm_put(&vm->i915->runtime_pm, wakeref); |
| 2132 | return err; |
| 2133 | } |
| 2134 | |
| 2135 | int i915_vma_unbind_async(struct i915_vma *vma, bool_Bool trylock_vm) |
| 2136 | { |
| 2137 | struct drm_i915_gem_object *obj = vma->obj; |
| 2138 | struct i915_address_space *vm = vma->vm; |
| 2139 | intel_wakeref_t wakeref = 0; |
| 2140 | struct dma_fence *fence; |
| 2141 | int err; |
| 2142 | |
| 2143 | /* |
| 2144 | * We need the dma-resv lock since we add the |
| 2145 | * unbind fence to the dma-resv object. |
| 2146 | */ |
| 2147 | assert_object_held(obj)do { (void)(&((obj)->base.resv)->lock.base); } while (0); |
| 2148 | |
| 2149 | if (!drm_mm_node_allocated(&vma->node)) |
| 2150 | return 0; |
| 2151 | |
| 2152 | if (i915_vma_is_pinned(vma)) { |
| 2153 | vma_print_allocator(vma, "is pinned"); |
| 2154 | return -EAGAIN35; |
| 2155 | } |
| 2156 | |
| 2157 | if (!obj->mm.rsgt) |
| 2158 | return -EBUSY16; |
| 2159 | |
| 2160 | err = dma_resv_reserve_fences(obj->base.resv, 2); |
| 2161 | if (err) |
| 2162 | return -EBUSY16; |
| 2163 | |
| 2164 | /* |
| 2165 | * It would be great if we could grab this wakeref from the |
| 2166 | * async unbind work if needed, but we can't because it uses |
| 2167 | * kmalloc and it's in the dma-fence signalling critical path. |
| 2168 | */ |
| 2169 | if (i915_vma_is_bound(vma, I915_VMA_GLOBAL_BIND((int)(1UL << (10))))) |
| 2170 | wakeref = intel_runtime_pm_get(&vm->i915->runtime_pm); |
| 2171 | |
| 2172 | if (trylock_vm && !mutex_trylock(&vm->mutex)(rw_enter(&vm->mutex, 0x0001UL | 0x0040UL) == 0)) { |
| 2173 | err = -EBUSY16; |
| 2174 | goto out_rpm; |
| 2175 | } else if (!trylock_vm) { |
| 2176 | err = mutex_lock_interruptible_nested(&vm->mutex, !wakeref)mutex_lock_interruptible(&vm->mutex); |
| 2177 | if (err) |
| 2178 | goto out_rpm; |
| 2179 | } |
| 2180 | |
| 2181 | fence = __i915_vma_unbind_async(vma); |
| 2182 | mutex_unlock(&vm->mutex)rw_exit_write(&vm->mutex); |
| 2183 | if (IS_ERR_OR_NULL(fence)) { |
| 2184 | err = PTR_ERR_OR_ZERO(fence); |
| 2185 | goto out_rpm; |
| 2186 | } |
| 2187 | |
| 2188 | dma_resv_add_fence(obj->base.resv, fence, DMA_RESV_USAGE_READ); |
| 2189 | dma_fence_put(fence); |
| 2190 | |
| 2191 | out_rpm: |
| 2192 | if (wakeref) |
| 2193 | intel_runtime_pm_put(&vm->i915->runtime_pm, wakeref); |
| 2194 | return err; |
| 2195 | } |
| 2196 | |
| 2197 | int i915_vma_unbind_unlocked(struct i915_vma *vma) |
| 2198 | { |
| 2199 | int err; |
| 2200 | |
| 2201 | i915_gem_object_lock(vma->obj, NULL((void *)0)); |
| 2202 | err = i915_vma_unbind(vma); |
| 2203 | i915_gem_object_unlock(vma->obj); |
| 2204 | |
| 2205 | return err; |
| 2206 | } |
| 2207 | |
| 2208 | struct i915_vma *i915_vma_make_unshrinkable(struct i915_vma *vma) |
| 2209 | { |
| 2210 | i915_gem_object_make_unshrinkable(vma->obj); |
| 2211 | return vma; |
| 2212 | } |
| 2213 | |
| 2214 | void i915_vma_make_shrinkable(struct i915_vma *vma) |
| 2215 | { |
| 2216 | i915_gem_object_make_shrinkable(vma->obj); |
| 2217 | } |
| 2218 | |
| 2219 | void i915_vma_make_purgeable(struct i915_vma *vma) |
| 2220 | { |
| 2221 | i915_gem_object_make_purgeable(vma->obj); |
| 2222 | } |
| 2223 | |
| 2224 | #if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)0 |
| 2225 | #include "selftests/i915_vma.c" |
| 2226 | #endif |
| 2227 | |
| 2228 | void i915_vma_module_exit(void) |
| 2229 | { |
| 2230 | #ifdef __linux__ |
| 2231 | kmem_cache_destroy(slab_vmas); |
| 2232 | #else |
| 2233 | pool_destroy(&slab_vmas); |
| 2234 | #endif |
| 2235 | } |
| 2236 | |
| 2237 | int __init i915_vma_module_init(void) |
| 2238 | { |
| 2239 | #ifdef __linux__ |
| 2240 | slab_vmas = KMEM_CACHE(i915_vma, SLAB_HWCACHE_ALIGN); |
| 2241 | if (!slab_vmas) |
| 2242 | return -ENOMEM12; |
| 2243 | #else |
| 2244 | pool_init(&slab_vmas, sizeof(struct i915_vma), |
| 2245 | CACHELINESIZE64, IPL_NONE0x0, 0, "drmvma", NULL((void *)0)); |
| 2246 | #endif |
| 2247 | |
| 2248 | return 0; |
| 2249 | } |