Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2008 Advanced Micro Devices, Inc. |
| 3 | * Copyright 2008 Red Hat Inc. |
| 4 | * Copyright 2009 Jerome Glisse. |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 7 | * copy of this software and associated documentation files (the "Software"), |
| 8 | * to deal in the Software without restriction, including without limitation |
| 9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 10 | * and/or sell copies of the Software, and to permit persons to whom the |
| 11 | * Software is furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in |
| 14 | * all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| 20 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| 21 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| 22 | * OTHER DEALINGS IN THE SOFTWARE. |
| 23 | * |
| 24 | * Authors: Dave Airlie |
| 25 | * Alex Deucher |
| 26 | * Jerome Glisse |
| 27 | */ |
| 28 | #include <drm/drmP.h> |
| 29 | #include <drm/radeon_drm.h> |
| 30 | #include "radeon.h" |
| 31 | #include "radeon_trace.h" |
| 32 | |
| 33 | /* |
| 34 | * GPUVM |
| 35 | * GPUVM is similar to the legacy gart on older asics, however |
| 36 | * rather than there being a single global gart table |
| 37 | * for the entire GPU, there are multiple VM page tables active |
| 38 | * at any given time. The VM page tables can contain a mix |
| 39 | * vram pages and system memory pages and system memory pages |
| 40 | * can be mapped as snooped (cached system pages) or unsnooped |
| 41 | * (uncached system pages). |
| 42 | * Each VM has an ID associated with it and there is a page table |
| 43 | * associated with each VMID. When execting a command buffer, |
| 44 | * the kernel tells the the ring what VMID to use for that command |
| 45 | * buffer. VMIDs are allocated dynamically as commands are submitted. |
| 46 | * The userspace drivers maintain their own address space and the kernel |
| 47 | * sets up their pages tables accordingly when they submit their |
| 48 | * command buffers and a VMID is assigned. |
| 49 | * Cayman/Trinity support up to 8 active VMs at any given time; |
| 50 | * SI supports 16. |
| 51 | */ |
| 52 | |
| 53 | /** |
| 54 | * radeon_vm_num_pde - return the number of page directory entries |
| 55 | * |
| 56 | * @rdev: radeon_device pointer |
| 57 | * |
| 58 | * Calculate the number of page directory entries (cayman+). |
| 59 | */ |
| 60 | static unsigned radeon_vm_num_pdes(struct radeon_device *rdev) |
| 61 | { |
| 62 | return rdev->vm_manager.max_pfn >> RADEON_VM_BLOCK_SIZE; |
| 63 | } |
| 64 | |
| 65 | /** |
| 66 | * radeon_vm_directory_size - returns the size of the page directory in bytes |
| 67 | * |
| 68 | * @rdev: radeon_device pointer |
| 69 | * |
| 70 | * Calculate the size of the page directory in bytes (cayman+). |
| 71 | */ |
| 72 | static unsigned radeon_vm_directory_size(struct radeon_device *rdev) |
| 73 | { |
| 74 | return RADEON_GPU_PAGE_ALIGN(radeon_vm_num_pdes(rdev) * 8); |
| 75 | } |
| 76 | |
| 77 | /** |
| 78 | * radeon_vm_manager_init - init the vm manager |
| 79 | * |
| 80 | * @rdev: radeon_device pointer |
| 81 | * |
| 82 | * Init the vm manager (cayman+). |
| 83 | * Returns 0 for success, error for failure. |
| 84 | */ |
| 85 | int radeon_vm_manager_init(struct radeon_device *rdev) |
| 86 | { |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 87 | int r; |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 88 | |
| 89 | if (!rdev->vm_manager.enabled) { |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 90 | r = radeon_asic_vm_init(rdev); |
| 91 | if (r) |
| 92 | return r; |
| 93 | |
| 94 | rdev->vm_manager.enabled = true; |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 95 | } |
| 96 | return 0; |
| 97 | } |
| 98 | |
| 99 | /** |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 100 | * radeon_vm_manager_fini - tear down the vm manager |
| 101 | * |
| 102 | * @rdev: radeon_device pointer |
| 103 | * |
| 104 | * Tear down the VM manager (cayman+). |
| 105 | */ |
| 106 | void radeon_vm_manager_fini(struct radeon_device *rdev) |
| 107 | { |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 108 | int i; |
| 109 | |
| 110 | if (!rdev->vm_manager.enabled) |
| 111 | return; |
| 112 | |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 113 | for (i = 0; i < RADEON_NUM_VM; ++i) |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 114 | radeon_fence_unref(&rdev->vm_manager.active[i]); |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 115 | radeon_asic_vm_fini(rdev); |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 116 | rdev->vm_manager.enabled = false; |
| 117 | } |
| 118 | |
| 119 | /** |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 120 | * radeon_vm_get_bos - add the vm BOs to a validation list |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 121 | * |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 122 | * @vm: vm providing the BOs |
| 123 | * @head: head of validation list |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 124 | * |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 125 | * Add the page directory to the list of BOs to |
| 126 | * validate for command submission (cayman+). |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 127 | */ |
Christian König | df0af44 | 2014-03-03 12:38:08 +0100 | [diff] [blame] | 128 | struct radeon_cs_reloc *radeon_vm_get_bos(struct radeon_device *rdev, |
| 129 | struct radeon_vm *vm, |
| 130 | struct list_head *head) |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 131 | { |
Christian König | df0af44 | 2014-03-03 12:38:08 +0100 | [diff] [blame] | 132 | struct radeon_cs_reloc *list; |
Christian König | 7d95f6c | 2014-05-28 12:24:17 +0200 | [diff] [blame] | 133 | unsigned i, idx; |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 134 | |
Christian König | 7d95f6c | 2014-05-28 12:24:17 +0200 | [diff] [blame] | 135 | list = kmalloc_array(vm->max_pde_used + 1, |
| 136 | sizeof(struct radeon_cs_reloc), GFP_KERNEL); |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 137 | if (!list) |
| 138 | return NULL; |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 139 | |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 140 | /* add the vm page table to the list */ |
Christian König | df0af44 | 2014-03-03 12:38:08 +0100 | [diff] [blame] | 141 | list[0].gobj = NULL; |
| 142 | list[0].robj = vm->page_directory; |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 143 | list[0].domain = RADEON_GEM_DOMAIN_VRAM; |
| 144 | list[0].alt_domain = RADEON_GEM_DOMAIN_VRAM; |
| 145 | list[0].tv.bo = &vm->page_directory->tbo; |
Christian König | df0af44 | 2014-03-03 12:38:08 +0100 | [diff] [blame] | 146 | list[0].tiling_flags = 0; |
| 147 | list[0].handle = 0; |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 148 | list_add(&list[0].tv.head, head); |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 149 | |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 150 | for (i = 0, idx = 1; i <= vm->max_pde_used; i++) { |
| 151 | if (!vm->page_tables[i].bo) |
| 152 | continue; |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 153 | |
Christian König | df0af44 | 2014-03-03 12:38:08 +0100 | [diff] [blame] | 154 | list[idx].gobj = NULL; |
| 155 | list[idx].robj = vm->page_tables[i].bo; |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 156 | list[idx].domain = RADEON_GEM_DOMAIN_VRAM; |
| 157 | list[idx].alt_domain = RADEON_GEM_DOMAIN_VRAM; |
Christian König | df0af44 | 2014-03-03 12:38:08 +0100 | [diff] [blame] | 158 | list[idx].tv.bo = &list[idx].robj->tbo; |
| 159 | list[idx].tiling_flags = 0; |
| 160 | list[idx].handle = 0; |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 161 | list_add(&list[idx++].tv.head, head); |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 162 | } |
| 163 | |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 164 | return list; |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 165 | } |
| 166 | |
| 167 | /** |
| 168 | * radeon_vm_grab_id - allocate the next free VMID |
| 169 | * |
| 170 | * @rdev: radeon_device pointer |
| 171 | * @vm: vm to allocate id for |
| 172 | * @ring: ring we want to submit job to |
| 173 | * |
| 174 | * Allocate an id for the vm (cayman+). |
| 175 | * Returns the fence we need to sync to (if any). |
| 176 | * |
| 177 | * Global and local mutex must be locked! |
| 178 | */ |
| 179 | struct radeon_fence *radeon_vm_grab_id(struct radeon_device *rdev, |
| 180 | struct radeon_vm *vm, int ring) |
| 181 | { |
| 182 | struct radeon_fence *best[RADEON_NUM_RINGS] = {}; |
| 183 | unsigned choices[2] = {}; |
| 184 | unsigned i; |
| 185 | |
| 186 | /* check if the id is still valid */ |
| 187 | if (vm->last_id_use && vm->last_id_use == rdev->vm_manager.active[vm->id]) |
| 188 | return NULL; |
| 189 | |
| 190 | /* we definately need to flush */ |
| 191 | radeon_fence_unref(&vm->last_flush); |
| 192 | |
| 193 | /* skip over VMID 0, since it is the system VM */ |
| 194 | for (i = 1; i < rdev->vm_manager.nvm; ++i) { |
| 195 | struct radeon_fence *fence = rdev->vm_manager.active[i]; |
| 196 | |
| 197 | if (fence == NULL) { |
| 198 | /* found a free one */ |
| 199 | vm->id = i; |
| 200 | trace_radeon_vm_grab_id(vm->id, ring); |
| 201 | return NULL; |
| 202 | } |
| 203 | |
| 204 | if (radeon_fence_is_earlier(fence, best[fence->ring])) { |
| 205 | best[fence->ring] = fence; |
| 206 | choices[fence->ring == ring ? 0 : 1] = i; |
| 207 | } |
| 208 | } |
| 209 | |
| 210 | for (i = 0; i < 2; ++i) { |
| 211 | if (choices[i]) { |
| 212 | vm->id = choices[i]; |
| 213 | trace_radeon_vm_grab_id(vm->id, ring); |
| 214 | return rdev->vm_manager.active[choices[i]]; |
| 215 | } |
| 216 | } |
| 217 | |
| 218 | /* should never happen */ |
| 219 | BUG(); |
| 220 | return NULL; |
| 221 | } |
| 222 | |
| 223 | /** |
Christian König | fa68834 | 2014-02-20 10:47:05 +0100 | [diff] [blame] | 224 | * radeon_vm_flush - hardware flush the vm |
| 225 | * |
| 226 | * @rdev: radeon_device pointer |
| 227 | * @vm: vm we want to flush |
| 228 | * @ring: ring to use for flush |
| 229 | * |
| 230 | * Flush the vm (cayman+). |
| 231 | * |
| 232 | * Global and local mutex must be locked! |
| 233 | */ |
| 234 | void radeon_vm_flush(struct radeon_device *rdev, |
| 235 | struct radeon_vm *vm, |
| 236 | int ring) |
| 237 | { |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 238 | uint64_t pd_addr = radeon_bo_gpu_offset(vm->page_directory); |
| 239 | |
Christian König | fa68834 | 2014-02-20 10:47:05 +0100 | [diff] [blame] | 240 | /* if we can't remember our last VM flush then flush now! */ |
| 241 | /* XXX figure out why we have to flush all the time */ |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 242 | if (!vm->last_flush || true || pd_addr != vm->pd_gpu_addr) { |
| 243 | vm->pd_gpu_addr = pd_addr; |
Christian König | fa68834 | 2014-02-20 10:47:05 +0100 | [diff] [blame] | 244 | radeon_ring_vm_flush(rdev, ring, vm); |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 245 | } |
Christian König | fa68834 | 2014-02-20 10:47:05 +0100 | [diff] [blame] | 246 | } |
| 247 | |
| 248 | /** |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 249 | * radeon_vm_fence - remember fence for vm |
| 250 | * |
| 251 | * @rdev: radeon_device pointer |
| 252 | * @vm: vm we want to fence |
| 253 | * @fence: fence to remember |
| 254 | * |
| 255 | * Fence the vm (cayman+). |
| 256 | * Set the fence used to protect page table and id. |
| 257 | * |
| 258 | * Global and local mutex must be locked! |
| 259 | */ |
| 260 | void radeon_vm_fence(struct radeon_device *rdev, |
| 261 | struct radeon_vm *vm, |
| 262 | struct radeon_fence *fence) |
| 263 | { |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 264 | radeon_fence_unref(&vm->fence); |
| 265 | vm->fence = radeon_fence_ref(fence); |
| 266 | |
Christian König | fa68834 | 2014-02-20 10:47:05 +0100 | [diff] [blame] | 267 | radeon_fence_unref(&rdev->vm_manager.active[vm->id]); |
| 268 | rdev->vm_manager.active[vm->id] = radeon_fence_ref(fence); |
| 269 | |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 270 | radeon_fence_unref(&vm->last_id_use); |
| 271 | vm->last_id_use = radeon_fence_ref(fence); |
Christian König | fa68834 | 2014-02-20 10:47:05 +0100 | [diff] [blame] | 272 | |
| 273 | /* we just flushed the VM, remember that */ |
| 274 | if (!vm->last_flush) |
| 275 | vm->last_flush = radeon_fence_ref(fence); |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 276 | } |
| 277 | |
| 278 | /** |
| 279 | * radeon_vm_bo_find - find the bo_va for a specific vm & bo |
| 280 | * |
| 281 | * @vm: requested vm |
| 282 | * @bo: requested buffer object |
| 283 | * |
| 284 | * Find @bo inside the requested vm (cayman+). |
| 285 | * Search inside the @bos vm list for the requested vm |
| 286 | * Returns the found bo_va or NULL if none is found |
| 287 | * |
| 288 | * Object has to be reserved! |
| 289 | */ |
| 290 | struct radeon_bo_va *radeon_vm_bo_find(struct radeon_vm *vm, |
| 291 | struct radeon_bo *bo) |
| 292 | { |
| 293 | struct radeon_bo_va *bo_va; |
| 294 | |
| 295 | list_for_each_entry(bo_va, &bo->va, bo_list) { |
| 296 | if (bo_va->vm == vm) { |
| 297 | return bo_va; |
| 298 | } |
| 299 | } |
| 300 | return NULL; |
| 301 | } |
| 302 | |
| 303 | /** |
| 304 | * radeon_vm_bo_add - add a bo to a specific vm |
| 305 | * |
| 306 | * @rdev: radeon_device pointer |
| 307 | * @vm: requested vm |
| 308 | * @bo: radeon buffer object |
| 309 | * |
| 310 | * Add @bo into the requested vm (cayman+). |
| 311 | * Add @bo to the list of bos associated with the vm |
| 312 | * Returns newly added bo_va or NULL for failure |
| 313 | * |
| 314 | * Object has to be reserved! |
| 315 | */ |
| 316 | struct radeon_bo_va *radeon_vm_bo_add(struct radeon_device *rdev, |
| 317 | struct radeon_vm *vm, |
| 318 | struct radeon_bo *bo) |
| 319 | { |
| 320 | struct radeon_bo_va *bo_va; |
| 321 | |
| 322 | bo_va = kzalloc(sizeof(struct radeon_bo_va), GFP_KERNEL); |
| 323 | if (bo_va == NULL) { |
| 324 | return NULL; |
| 325 | } |
| 326 | bo_va->vm = vm; |
| 327 | bo_va->bo = bo; |
| 328 | bo_va->soffset = 0; |
| 329 | bo_va->eoffset = 0; |
| 330 | bo_va->flags = 0; |
| 331 | bo_va->valid = false; |
| 332 | bo_va->ref_count = 1; |
| 333 | INIT_LIST_HEAD(&bo_va->bo_list); |
| 334 | INIT_LIST_HEAD(&bo_va->vm_list); |
| 335 | |
| 336 | mutex_lock(&vm->mutex); |
| 337 | list_add(&bo_va->vm_list, &vm->va); |
| 338 | list_add_tail(&bo_va->bo_list, &bo->va); |
| 339 | mutex_unlock(&vm->mutex); |
| 340 | |
| 341 | return bo_va; |
| 342 | } |
| 343 | |
| 344 | /** |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 345 | * radeon_vm_clear_bo - initially clear the page dir/table |
| 346 | * |
| 347 | * @rdev: radeon_device pointer |
| 348 | * @bo: bo to clear |
| 349 | */ |
| 350 | static int radeon_vm_clear_bo(struct radeon_device *rdev, |
| 351 | struct radeon_bo *bo) |
| 352 | { |
| 353 | struct ttm_validate_buffer tv; |
| 354 | struct ww_acquire_ctx ticket; |
| 355 | struct list_head head; |
| 356 | struct radeon_ib ib; |
| 357 | unsigned entries; |
| 358 | uint64_t addr; |
| 359 | int r; |
| 360 | |
| 361 | memset(&tv, 0, sizeof(tv)); |
| 362 | tv.bo = &bo->tbo; |
| 363 | |
| 364 | INIT_LIST_HEAD(&head); |
| 365 | list_add(&tv.head, &head); |
| 366 | |
| 367 | r = ttm_eu_reserve_buffers(&ticket, &head); |
| 368 | if (r) |
| 369 | return r; |
| 370 | |
| 371 | r = ttm_bo_validate(&bo->tbo, &bo->placement, true, false); |
| 372 | if (r) |
| 373 | goto error; |
| 374 | |
| 375 | addr = radeon_bo_gpu_offset(bo); |
| 376 | entries = radeon_bo_size(bo) / 8; |
| 377 | |
| 378 | r = radeon_ib_get(rdev, R600_RING_TYPE_DMA_INDEX, &ib, |
| 379 | NULL, entries * 2 + 64); |
| 380 | if (r) |
| 381 | goto error; |
| 382 | |
| 383 | ib.length_dw = 0; |
| 384 | |
| 385 | radeon_asic_vm_set_page(rdev, &ib, addr, 0, entries, 0, 0); |
| 386 | |
| 387 | r = radeon_ib_schedule(rdev, &ib, NULL); |
| 388 | if (r) |
| 389 | goto error; |
| 390 | |
| 391 | ttm_eu_fence_buffer_objects(&ticket, &head, ib.fence); |
| 392 | radeon_ib_free(rdev, &ib); |
| 393 | |
| 394 | return 0; |
| 395 | |
| 396 | error: |
| 397 | ttm_eu_backoff_reservation(&ticket, &head); |
| 398 | return r; |
| 399 | } |
| 400 | |
| 401 | /** |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 402 | * radeon_vm_bo_set_addr - set bos virtual address inside a vm |
| 403 | * |
| 404 | * @rdev: radeon_device pointer |
| 405 | * @bo_va: bo_va to store the address |
| 406 | * @soffset: requested offset of the buffer in the VM address space |
| 407 | * @flags: attributes of pages (read/write/valid/etc.) |
| 408 | * |
| 409 | * Set offset of @bo_va (cayman+). |
| 410 | * Validate and set the offset requested within the vm address space. |
| 411 | * Returns 0 for success, error for failure. |
| 412 | * |
| 413 | * Object has to be reserved! |
| 414 | */ |
| 415 | int radeon_vm_bo_set_addr(struct radeon_device *rdev, |
| 416 | struct radeon_bo_va *bo_va, |
| 417 | uint64_t soffset, |
| 418 | uint32_t flags) |
| 419 | { |
| 420 | uint64_t size = radeon_bo_size(bo_va->bo); |
| 421 | uint64_t eoffset, last_offset = 0; |
| 422 | struct radeon_vm *vm = bo_va->vm; |
| 423 | struct radeon_bo_va *tmp; |
| 424 | struct list_head *head; |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 425 | unsigned last_pfn, pt_idx; |
| 426 | int r; |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 427 | |
| 428 | if (soffset) { |
| 429 | /* make sure object fit at this offset */ |
| 430 | eoffset = soffset + size; |
| 431 | if (soffset >= eoffset) { |
| 432 | return -EINVAL; |
| 433 | } |
| 434 | |
| 435 | last_pfn = eoffset / RADEON_GPU_PAGE_SIZE; |
| 436 | if (last_pfn > rdev->vm_manager.max_pfn) { |
| 437 | dev_err(rdev->dev, "va above limit (0x%08X > 0x%08X)\n", |
| 438 | last_pfn, rdev->vm_manager.max_pfn); |
| 439 | return -EINVAL; |
| 440 | } |
| 441 | |
| 442 | } else { |
| 443 | eoffset = last_pfn = 0; |
| 444 | } |
| 445 | |
| 446 | mutex_lock(&vm->mutex); |
| 447 | head = &vm->va; |
| 448 | last_offset = 0; |
| 449 | list_for_each_entry(tmp, &vm->va, vm_list) { |
| 450 | if (bo_va == tmp) { |
| 451 | /* skip over currently modified bo */ |
| 452 | continue; |
| 453 | } |
| 454 | |
| 455 | if (soffset >= last_offset && eoffset <= tmp->soffset) { |
| 456 | /* bo can be added before this one */ |
| 457 | break; |
| 458 | } |
| 459 | if (eoffset > tmp->soffset && soffset < tmp->eoffset) { |
| 460 | /* bo and tmp overlap, invalid offset */ |
| 461 | dev_err(rdev->dev, "bo %p va 0x%08X conflict with (bo %p 0x%08X 0x%08X)\n", |
| 462 | bo_va->bo, (unsigned)bo_va->soffset, tmp->bo, |
| 463 | (unsigned)tmp->soffset, (unsigned)tmp->eoffset); |
| 464 | mutex_unlock(&vm->mutex); |
| 465 | return -EINVAL; |
| 466 | } |
| 467 | last_offset = tmp->eoffset; |
| 468 | head = &tmp->vm_list; |
| 469 | } |
| 470 | |
| 471 | bo_va->soffset = soffset; |
| 472 | bo_va->eoffset = eoffset; |
| 473 | bo_va->flags = flags; |
| 474 | bo_va->valid = false; |
| 475 | list_move(&bo_va->vm_list, head); |
| 476 | |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 477 | soffset = (soffset / RADEON_GPU_PAGE_SIZE) >> RADEON_VM_BLOCK_SIZE; |
| 478 | eoffset = (eoffset / RADEON_GPU_PAGE_SIZE) >> RADEON_VM_BLOCK_SIZE; |
| 479 | |
| 480 | if (eoffset > vm->max_pde_used) |
| 481 | vm->max_pde_used = eoffset; |
| 482 | |
| 483 | radeon_bo_unreserve(bo_va->bo); |
| 484 | |
| 485 | /* walk over the address space and allocate the page tables */ |
| 486 | for (pt_idx = soffset; pt_idx <= eoffset; ++pt_idx) { |
| 487 | struct radeon_bo *pt; |
| 488 | |
| 489 | if (vm->page_tables[pt_idx].bo) |
| 490 | continue; |
| 491 | |
| 492 | /* drop mutex to allocate and clear page table */ |
| 493 | mutex_unlock(&vm->mutex); |
| 494 | |
| 495 | r = radeon_bo_create(rdev, RADEON_VM_PTE_COUNT * 8, |
| 496 | RADEON_GPU_PAGE_SIZE, false, |
| 497 | RADEON_GEM_DOMAIN_VRAM, NULL, &pt); |
| 498 | if (r) |
| 499 | return r; |
| 500 | |
| 501 | r = radeon_vm_clear_bo(rdev, pt); |
| 502 | if (r) { |
| 503 | radeon_bo_unref(&pt); |
| 504 | radeon_bo_reserve(bo_va->bo, false); |
| 505 | return r; |
| 506 | } |
| 507 | |
| 508 | /* aquire mutex again */ |
| 509 | mutex_lock(&vm->mutex); |
| 510 | if (vm->page_tables[pt_idx].bo) { |
| 511 | /* someone else allocated the pt in the meantime */ |
| 512 | mutex_unlock(&vm->mutex); |
| 513 | radeon_bo_unref(&pt); |
| 514 | mutex_lock(&vm->mutex); |
| 515 | continue; |
| 516 | } |
| 517 | |
| 518 | vm->page_tables[pt_idx].addr = 0; |
| 519 | vm->page_tables[pt_idx].bo = pt; |
| 520 | } |
| 521 | |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 522 | mutex_unlock(&vm->mutex); |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 523 | return radeon_bo_reserve(bo_va->bo, false); |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 524 | } |
| 525 | |
| 526 | /** |
| 527 | * radeon_vm_map_gart - get the physical address of a gart page |
| 528 | * |
| 529 | * @rdev: radeon_device pointer |
| 530 | * @addr: the unmapped addr |
| 531 | * |
| 532 | * Look up the physical address of the page that the pte resolves |
| 533 | * to (cayman+). |
| 534 | * Returns the physical address of the page. |
| 535 | */ |
| 536 | uint64_t radeon_vm_map_gart(struct radeon_device *rdev, uint64_t addr) |
| 537 | { |
| 538 | uint64_t result; |
| 539 | |
| 540 | /* page table offset */ |
| 541 | result = rdev->gart.pages_addr[addr >> PAGE_SHIFT]; |
| 542 | |
| 543 | /* in case cpu page size != gpu page size*/ |
| 544 | result |= addr & (~PAGE_MASK); |
| 545 | |
| 546 | return result; |
| 547 | } |
| 548 | |
| 549 | /** |
| 550 | * radeon_vm_page_flags - translate page flags to what the hw uses |
| 551 | * |
| 552 | * @flags: flags comming from userspace |
| 553 | * |
| 554 | * Translate the flags the userspace ABI uses to hw flags. |
| 555 | */ |
| 556 | static uint32_t radeon_vm_page_flags(uint32_t flags) |
| 557 | { |
| 558 | uint32_t hw_flags = 0; |
| 559 | hw_flags |= (flags & RADEON_VM_PAGE_VALID) ? R600_PTE_VALID : 0; |
| 560 | hw_flags |= (flags & RADEON_VM_PAGE_READABLE) ? R600_PTE_READABLE : 0; |
| 561 | hw_flags |= (flags & RADEON_VM_PAGE_WRITEABLE) ? R600_PTE_WRITEABLE : 0; |
| 562 | if (flags & RADEON_VM_PAGE_SYSTEM) { |
| 563 | hw_flags |= R600_PTE_SYSTEM; |
| 564 | hw_flags |= (flags & RADEON_VM_PAGE_SNOOPED) ? R600_PTE_SNOOPED : 0; |
| 565 | } |
| 566 | return hw_flags; |
| 567 | } |
| 568 | |
| 569 | /** |
| 570 | * radeon_vm_update_pdes - make sure that page directory is valid |
| 571 | * |
| 572 | * @rdev: radeon_device pointer |
| 573 | * @vm: requested vm |
| 574 | * @start: start of GPU address range |
| 575 | * @end: end of GPU address range |
| 576 | * |
| 577 | * Allocates new page tables if necessary |
| 578 | * and updates the page directory (cayman+). |
| 579 | * Returns 0 for success, error for failure. |
| 580 | * |
| 581 | * Global and local mutex must be locked! |
| 582 | */ |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 583 | int radeon_vm_update_page_directory(struct radeon_device *rdev, |
| 584 | struct radeon_vm *vm) |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 585 | { |
| 586 | static const uint32_t incr = RADEON_VM_PTE_COUNT * 8; |
| 587 | |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 588 | uint64_t pd_addr = radeon_bo_gpu_offset(vm->page_directory); |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 589 | uint64_t last_pde = ~0, last_pt = ~0; |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 590 | unsigned count = 0, pt_idx, ndw; |
| 591 | struct radeon_ib ib; |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 592 | int r; |
| 593 | |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 594 | /* padding, etc. */ |
| 595 | ndw = 64; |
| 596 | |
| 597 | /* assume the worst case */ |
Christian König | 4906f68 | 2014-05-12 14:46:11 +0200 | [diff] [blame] | 598 | ndw += vm->max_pde_used * 16; |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 599 | |
| 600 | /* update too big for an IB */ |
| 601 | if (ndw > 0xfffff) |
| 602 | return -ENOMEM; |
| 603 | |
| 604 | r = radeon_ib_get(rdev, R600_RING_TYPE_DMA_INDEX, &ib, NULL, ndw * 4); |
| 605 | if (r) |
| 606 | return r; |
| 607 | ib.length_dw = 0; |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 608 | |
| 609 | /* walk over the address space and update the page directory */ |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 610 | for (pt_idx = 0; pt_idx <= vm->max_pde_used; ++pt_idx) { |
| 611 | struct radeon_bo *bo = vm->page_tables[pt_idx].bo; |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 612 | uint64_t pde, pt; |
| 613 | |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 614 | if (bo == NULL) |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 615 | continue; |
| 616 | |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 617 | pt = radeon_bo_gpu_offset(bo); |
| 618 | if (vm->page_tables[pt_idx].addr == pt) |
| 619 | continue; |
| 620 | vm->page_tables[pt_idx].addr = pt; |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 621 | |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 622 | pde = pd_addr + pt_idx * 8; |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 623 | if (((last_pde + 8 * count) != pde) || |
| 624 | ((last_pt + incr * count) != pt)) { |
| 625 | |
| 626 | if (count) { |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 627 | radeon_asic_vm_set_page(rdev, &ib, last_pde, |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 628 | last_pt, count, incr, |
| 629 | R600_PTE_VALID); |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 630 | } |
| 631 | |
| 632 | count = 1; |
| 633 | last_pde = pde; |
| 634 | last_pt = pt; |
| 635 | } else { |
| 636 | ++count; |
| 637 | } |
| 638 | } |
| 639 | |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 640 | if (count) |
| 641 | radeon_asic_vm_set_page(rdev, &ib, last_pde, last_pt, count, |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 642 | incr, R600_PTE_VALID); |
| 643 | |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 644 | if (ib.length_dw != 0) { |
| 645 | radeon_semaphore_sync_to(ib.semaphore, vm->last_id_use); |
| 646 | r = radeon_ib_schedule(rdev, &ib, NULL); |
| 647 | if (r) { |
| 648 | radeon_ib_free(rdev, &ib); |
| 649 | return r; |
| 650 | } |
| 651 | radeon_fence_unref(&vm->fence); |
| 652 | vm->fence = radeon_fence_ref(ib.fence); |
| 653 | radeon_fence_unref(&vm->last_flush); |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 654 | } |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 655 | radeon_ib_free(rdev, &ib); |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 656 | |
| 657 | return 0; |
| 658 | } |
| 659 | |
| 660 | /** |
| 661 | * radeon_vm_update_ptes - make sure that page tables are valid |
| 662 | * |
| 663 | * @rdev: radeon_device pointer |
| 664 | * @vm: requested vm |
| 665 | * @start: start of GPU address range |
| 666 | * @end: end of GPU address range |
| 667 | * @dst: destination address to map to |
| 668 | * @flags: mapping flags |
| 669 | * |
| 670 | * Update the page tables in the range @start - @end (cayman+). |
| 671 | * |
| 672 | * Global and local mutex must be locked! |
| 673 | */ |
| 674 | static void radeon_vm_update_ptes(struct radeon_device *rdev, |
| 675 | struct radeon_vm *vm, |
| 676 | struct radeon_ib *ib, |
| 677 | uint64_t start, uint64_t end, |
| 678 | uint64_t dst, uint32_t flags) |
| 679 | { |
| 680 | static const uint64_t mask = RADEON_VM_PTE_COUNT - 1; |
| 681 | |
| 682 | uint64_t last_pte = ~0, last_dst = ~0; |
| 683 | unsigned count = 0; |
| 684 | uint64_t addr; |
| 685 | |
| 686 | start = start / RADEON_GPU_PAGE_SIZE; |
| 687 | end = end / RADEON_GPU_PAGE_SIZE; |
| 688 | |
| 689 | /* walk over the address space and update the page tables */ |
| 690 | for (addr = start; addr < end; ) { |
| 691 | uint64_t pt_idx = addr >> RADEON_VM_BLOCK_SIZE; |
| 692 | unsigned nptes; |
| 693 | uint64_t pte; |
| 694 | |
| 695 | if ((addr & ~mask) == (end & ~mask)) |
| 696 | nptes = end - addr; |
| 697 | else |
| 698 | nptes = RADEON_VM_PTE_COUNT - (addr & mask); |
| 699 | |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 700 | pte = radeon_bo_gpu_offset(vm->page_tables[pt_idx].bo); |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 701 | pte += (addr & mask) * 8; |
| 702 | |
| 703 | if ((last_pte + 8 * count) != pte) { |
| 704 | |
| 705 | if (count) { |
| 706 | radeon_asic_vm_set_page(rdev, ib, last_pte, |
| 707 | last_dst, count, |
| 708 | RADEON_GPU_PAGE_SIZE, |
| 709 | flags); |
| 710 | } |
| 711 | |
| 712 | count = nptes; |
| 713 | last_pte = pte; |
| 714 | last_dst = dst; |
| 715 | } else { |
| 716 | count += nptes; |
| 717 | } |
| 718 | |
| 719 | addr += nptes; |
| 720 | dst += nptes * RADEON_GPU_PAGE_SIZE; |
| 721 | } |
| 722 | |
| 723 | if (count) { |
| 724 | radeon_asic_vm_set_page(rdev, ib, last_pte, |
| 725 | last_dst, count, |
| 726 | RADEON_GPU_PAGE_SIZE, flags); |
| 727 | } |
| 728 | } |
| 729 | |
| 730 | /** |
| 731 | * radeon_vm_bo_update - map a bo into the vm page table |
| 732 | * |
| 733 | * @rdev: radeon_device pointer |
| 734 | * @vm: requested vm |
| 735 | * @bo: radeon buffer object |
| 736 | * @mem: ttm mem |
| 737 | * |
| 738 | * Fill in the page table entries for @bo (cayman+). |
| 739 | * Returns 0 for success, -EINVAL for failure. |
| 740 | * |
Christian König | 529364e | 2014-02-20 19:33:15 +0100 | [diff] [blame] | 741 | * Object have to be reserved and mutex must be locked! |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 742 | */ |
| 743 | int radeon_vm_bo_update(struct radeon_device *rdev, |
| 744 | struct radeon_vm *vm, |
| 745 | struct radeon_bo *bo, |
| 746 | struct ttm_mem_reg *mem) |
| 747 | { |
| 748 | struct radeon_ib ib; |
| 749 | struct radeon_bo_va *bo_va; |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 750 | unsigned nptes, ndw; |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 751 | uint64_t addr; |
| 752 | int r; |
| 753 | |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 754 | bo_va = radeon_vm_bo_find(vm, bo); |
| 755 | if (bo_va == NULL) { |
| 756 | dev_err(rdev->dev, "bo %p not in vm %p\n", bo, vm); |
| 757 | return -EINVAL; |
| 758 | } |
| 759 | |
| 760 | if (!bo_va->soffset) { |
| 761 | dev_err(rdev->dev, "bo %p don't has a mapping in vm %p\n", |
| 762 | bo, vm); |
| 763 | return -EINVAL; |
| 764 | } |
| 765 | |
| 766 | if ((bo_va->valid && mem) || (!bo_va->valid && mem == NULL)) |
| 767 | return 0; |
| 768 | |
| 769 | bo_va->flags &= ~RADEON_VM_PAGE_VALID; |
| 770 | bo_va->flags &= ~RADEON_VM_PAGE_SYSTEM; |
| 771 | if (mem) { |
| 772 | addr = mem->start << PAGE_SHIFT; |
| 773 | if (mem->mem_type != TTM_PL_SYSTEM) { |
| 774 | bo_va->flags |= RADEON_VM_PAGE_VALID; |
| 775 | bo_va->valid = true; |
| 776 | } |
| 777 | if (mem->mem_type == TTM_PL_TT) { |
| 778 | bo_va->flags |= RADEON_VM_PAGE_SYSTEM; |
| 779 | } else { |
| 780 | addr += rdev->vm_manager.vram_base_offset; |
| 781 | } |
| 782 | } else { |
| 783 | addr = 0; |
| 784 | bo_va->valid = false; |
| 785 | } |
| 786 | |
| 787 | trace_radeon_vm_bo_update(bo_va); |
| 788 | |
| 789 | nptes = radeon_bo_ngpu_pages(bo); |
| 790 | |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 791 | /* padding, etc. */ |
| 792 | ndw = 64; |
| 793 | |
| 794 | if (RADEON_VM_BLOCK_SIZE > 11) |
| 795 | /* reserve space for one header for every 2k dwords */ |
| 796 | ndw += (nptes >> 11) * 4; |
| 797 | else |
| 798 | /* reserve space for one header for |
| 799 | every (1 << BLOCK_SIZE) entries */ |
| 800 | ndw += (nptes >> RADEON_VM_BLOCK_SIZE) * 4; |
| 801 | |
| 802 | /* reserve space for pte addresses */ |
| 803 | ndw += nptes * 2; |
| 804 | |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 805 | /* update too big for an IB */ |
| 806 | if (ndw > 0xfffff) |
| 807 | return -ENOMEM; |
| 808 | |
| 809 | r = radeon_ib_get(rdev, R600_RING_TYPE_DMA_INDEX, &ib, NULL, ndw * 4); |
| 810 | if (r) |
| 811 | return r; |
| 812 | ib.length_dw = 0; |
| 813 | |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 814 | radeon_vm_update_ptes(rdev, vm, &ib, bo_va->soffset, bo_va->eoffset, |
| 815 | addr, radeon_vm_page_flags(bo_va->flags)); |
| 816 | |
| 817 | radeon_semaphore_sync_to(ib.semaphore, vm->fence); |
| 818 | r = radeon_ib_schedule(rdev, &ib, NULL); |
| 819 | if (r) { |
| 820 | radeon_ib_free(rdev, &ib); |
| 821 | return r; |
| 822 | } |
| 823 | radeon_fence_unref(&vm->fence); |
| 824 | vm->fence = radeon_fence_ref(ib.fence); |
| 825 | radeon_ib_free(rdev, &ib); |
| 826 | radeon_fence_unref(&vm->last_flush); |
| 827 | |
| 828 | return 0; |
| 829 | } |
| 830 | |
| 831 | /** |
| 832 | * radeon_vm_bo_rmv - remove a bo to a specific vm |
| 833 | * |
| 834 | * @rdev: radeon_device pointer |
| 835 | * @bo_va: requested bo_va |
| 836 | * |
| 837 | * Remove @bo_va->bo from the requested vm (cayman+). |
| 838 | * Remove @bo_va->bo from the list of bos associated with the bo_va->vm and |
| 839 | * remove the ptes for @bo_va in the page table. |
| 840 | * Returns 0 for success. |
| 841 | * |
| 842 | * Object have to be reserved! |
| 843 | */ |
| 844 | int radeon_vm_bo_rmv(struct radeon_device *rdev, |
| 845 | struct radeon_bo_va *bo_va) |
| 846 | { |
| 847 | int r = 0; |
| 848 | |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 849 | mutex_lock(&bo_va->vm->mutex); |
Christian König | 529364e | 2014-02-20 19:33:15 +0100 | [diff] [blame] | 850 | if (bo_va->soffset) |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 851 | r = radeon_vm_bo_update(rdev, bo_va->vm, bo_va->bo, NULL); |
Christian König | 529364e | 2014-02-20 19:33:15 +0100 | [diff] [blame] | 852 | |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 853 | list_del(&bo_va->vm_list); |
| 854 | mutex_unlock(&bo_va->vm->mutex); |
| 855 | list_del(&bo_va->bo_list); |
| 856 | |
| 857 | kfree(bo_va); |
| 858 | return r; |
| 859 | } |
| 860 | |
| 861 | /** |
| 862 | * radeon_vm_bo_invalidate - mark the bo as invalid |
| 863 | * |
| 864 | * @rdev: radeon_device pointer |
| 865 | * @vm: requested vm |
| 866 | * @bo: radeon buffer object |
| 867 | * |
| 868 | * Mark @bo as invalid (cayman+). |
| 869 | */ |
| 870 | void radeon_vm_bo_invalidate(struct radeon_device *rdev, |
| 871 | struct radeon_bo *bo) |
| 872 | { |
| 873 | struct radeon_bo_va *bo_va; |
| 874 | |
| 875 | list_for_each_entry(bo_va, &bo->va, bo_list) { |
| 876 | bo_va->valid = false; |
| 877 | } |
| 878 | } |
| 879 | |
| 880 | /** |
| 881 | * radeon_vm_init - initialize a vm instance |
| 882 | * |
| 883 | * @rdev: radeon_device pointer |
| 884 | * @vm: requested vm |
| 885 | * |
| 886 | * Init @vm fields (cayman+). |
| 887 | */ |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 888 | int radeon_vm_init(struct radeon_device *rdev, struct radeon_vm *vm) |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 889 | { |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 890 | unsigned pd_size, pd_entries, pts_size; |
| 891 | int r; |
| 892 | |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 893 | vm->id = 0; |
| 894 | vm->fence = NULL; |
| 895 | vm->last_flush = NULL; |
| 896 | vm->last_id_use = NULL; |
| 897 | mutex_init(&vm->mutex); |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 898 | INIT_LIST_HEAD(&vm->va); |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 899 | |
| 900 | pd_size = radeon_vm_directory_size(rdev); |
| 901 | pd_entries = radeon_vm_num_pdes(rdev); |
| 902 | |
| 903 | /* allocate page table array */ |
| 904 | pts_size = pd_entries * sizeof(struct radeon_vm_pt); |
| 905 | vm->page_tables = kzalloc(pts_size, GFP_KERNEL); |
| 906 | if (vm->page_tables == NULL) { |
| 907 | DRM_ERROR("Cannot allocate memory for page table array\n"); |
| 908 | return -ENOMEM; |
| 909 | } |
| 910 | |
| 911 | r = radeon_bo_create(rdev, pd_size, RADEON_VM_PTB_ALIGN_SIZE, false, |
| 912 | RADEON_GEM_DOMAIN_VRAM, NULL, |
| 913 | &vm->page_directory); |
| 914 | if (r) |
| 915 | return r; |
| 916 | |
| 917 | r = radeon_vm_clear_bo(rdev, vm->page_directory); |
| 918 | if (r) { |
| 919 | radeon_bo_unref(&vm->page_directory); |
| 920 | vm->page_directory = NULL; |
| 921 | return r; |
| 922 | } |
| 923 | |
| 924 | return 0; |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 925 | } |
| 926 | |
| 927 | /** |
| 928 | * radeon_vm_fini - tear down a vm instance |
| 929 | * |
| 930 | * @rdev: radeon_device pointer |
| 931 | * @vm: requested vm |
| 932 | * |
| 933 | * Tear down @vm (cayman+). |
| 934 | * Unbind the VM and remove all bos from the vm bo list |
| 935 | */ |
| 936 | void radeon_vm_fini(struct radeon_device *rdev, struct radeon_vm *vm) |
| 937 | { |
| 938 | struct radeon_bo_va *bo_va, *tmp; |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 939 | int i, r; |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 940 | |
| 941 | if (!list_empty(&vm->va)) { |
| 942 | dev_err(rdev->dev, "still active bo inside vm\n"); |
| 943 | } |
| 944 | list_for_each_entry_safe(bo_va, tmp, &vm->va, vm_list) { |
| 945 | list_del_init(&bo_va->vm_list); |
| 946 | r = radeon_bo_reserve(bo_va->bo, false); |
| 947 | if (!r) { |
| 948 | list_del_init(&bo_va->bo_list); |
| 949 | radeon_bo_unreserve(bo_va->bo); |
| 950 | kfree(bo_va); |
| 951 | } |
| 952 | } |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 953 | |
| 954 | |
| 955 | for (i = 0; i < radeon_vm_num_pdes(rdev); i++) |
| 956 | radeon_bo_unref(&vm->page_tables[i].bo); |
| 957 | kfree(vm->page_tables); |
| 958 | |
| 959 | radeon_bo_unref(&vm->page_directory); |
| 960 | |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 961 | radeon_fence_unref(&vm->fence); |
| 962 | radeon_fence_unref(&vm->last_flush); |
| 963 | radeon_fence_unref(&vm->last_id_use); |
Christian König | 6d2f294 | 2014-02-20 13:42:17 +0100 | [diff] [blame] | 964 | |
| 965 | mutex_destroy(&vm->mutex); |
Christian König | 2280ab5 | 2014-02-20 10:25:15 +0100 | [diff] [blame] | 966 | } |