1 /************************************************************************** 2 * 3 * Copyright © 2009-2016 VMware, Inc., Palo Alto, CA., USA 4 * All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the 8 * "Software"), to deal in the Software without restriction, including 9 * without limitation the rights to use, copy, modify, merge, publish, 10 * distribute, sub license, and/or sell copies of the Software, and to 11 * permit persons to whom the Software is furnished to do so, subject to 12 * the following conditions: 13 * 14 * The above copyright notice and this permission notice (including the 15 * next paragraph) shall be included in all copies or substantial portions 16 * of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 21 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, 22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 24 * USE OR OTHER DEALINGS IN THE SOFTWARE. 25 * 26 **************************************************************************/ 27 #include <linux/module.h> 28 #include <linux/console.h> 29 30 #include <drm/drmP.h> 31 #include "vmwgfx_drv.h" 32 #include "vmwgfx_binding.h" 33 #include <drm/ttm/ttm_placement.h> 34 #include <drm/ttm/ttm_bo_driver.h> 35 #include <drm/ttm/ttm_object.h> 36 #include <drm/ttm/ttm_module.h> 37 #include <linux/dma_remapping.h> 38 39 #define VMWGFX_DRIVER_NAME "vmwgfx" 40 #define VMWGFX_DRIVER_DESC "Linux drm driver for VMware graphics devices" 41 #define VMWGFX_CHIP_SVGAII 0 42 #define VMW_FB_RESERVATION 0 43 44 #define VMW_MIN_INITIAL_WIDTH 800 45 #define VMW_MIN_INITIAL_HEIGHT 600 46 47 #ifndef VMWGFX_GIT_VERSION 48 #define VMWGFX_GIT_VERSION "Unknown" 49 #endif 50 51 #define VMWGFX_REPO "In Tree" 52 53 54 /** 55 * Fully encoded drm commands. Might move to vmw_drm.h 56 */ 57 58 #define DRM_IOCTL_VMW_GET_PARAM \ 59 DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_GET_PARAM, \ 60 struct drm_vmw_getparam_arg) 61 #define DRM_IOCTL_VMW_ALLOC_DMABUF \ 62 DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_ALLOC_DMABUF, \ 63 union drm_vmw_alloc_dmabuf_arg) 64 #define DRM_IOCTL_VMW_UNREF_DMABUF \ 65 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_DMABUF, \ 66 struct drm_vmw_unref_dmabuf_arg) 67 #define DRM_IOCTL_VMW_CURSOR_BYPASS \ 68 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_CURSOR_BYPASS, \ 69 struct drm_vmw_cursor_bypass_arg) 70 71 #define DRM_IOCTL_VMW_CONTROL_STREAM \ 72 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_CONTROL_STREAM, \ 73 struct drm_vmw_control_stream_arg) 74 #define DRM_IOCTL_VMW_CLAIM_STREAM \ 75 DRM_IOR(DRM_COMMAND_BASE + DRM_VMW_CLAIM_STREAM, \ 76 struct drm_vmw_stream_arg) 77 #define DRM_IOCTL_VMW_UNREF_STREAM \ 78 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_STREAM, \ 79 struct drm_vmw_stream_arg) 80 81 #define DRM_IOCTL_VMW_CREATE_CONTEXT \ 82 DRM_IOR(DRM_COMMAND_BASE + DRM_VMW_CREATE_CONTEXT, \ 83 struct drm_vmw_context_arg) 84 #define DRM_IOCTL_VMW_UNREF_CONTEXT \ 85 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_CONTEXT, \ 86 struct drm_vmw_context_arg) 87 #define DRM_IOCTL_VMW_CREATE_SURFACE \ 88 DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_CREATE_SURFACE, \ 89 union drm_vmw_surface_create_arg) 90 #define DRM_IOCTL_VMW_UNREF_SURFACE \ 91 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_SURFACE, \ 92 struct drm_vmw_surface_arg) 93 #define DRM_IOCTL_VMW_REF_SURFACE \ 94 DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_REF_SURFACE, \ 95 union drm_vmw_surface_reference_arg) 96 #define DRM_IOCTL_VMW_EXECBUF \ 97 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_EXECBUF, \ 98 struct drm_vmw_execbuf_arg) 99 #define DRM_IOCTL_VMW_GET_3D_CAP \ 100 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_GET_3D_CAP, \ 101 struct drm_vmw_get_3d_cap_arg) 102 #define DRM_IOCTL_VMW_FENCE_WAIT \ 103 DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_FENCE_WAIT, \ 104 struct drm_vmw_fence_wait_arg) 105 #define DRM_IOCTL_VMW_FENCE_SIGNALED \ 106 DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_FENCE_SIGNALED, \ 107 struct drm_vmw_fence_signaled_arg) 108 #define DRM_IOCTL_VMW_FENCE_UNREF \ 109 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_FENCE_UNREF, \ 110 struct drm_vmw_fence_arg) 111 #define DRM_IOCTL_VMW_FENCE_EVENT \ 112 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_FENCE_EVENT, \ 113 struct drm_vmw_fence_event_arg) 114 #define DRM_IOCTL_VMW_PRESENT \ 115 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_PRESENT, \ 116 struct drm_vmw_present_arg) 117 #define DRM_IOCTL_VMW_PRESENT_READBACK \ 118 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_PRESENT_READBACK, \ 119 struct drm_vmw_present_readback_arg) 120 #define DRM_IOCTL_VMW_UPDATE_LAYOUT \ 121 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UPDATE_LAYOUT, \ 122 struct drm_vmw_update_layout_arg) 123 #define DRM_IOCTL_VMW_CREATE_SHADER \ 124 DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_CREATE_SHADER, \ 125 struct drm_vmw_shader_create_arg) 126 #define DRM_IOCTL_VMW_UNREF_SHADER \ 127 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_SHADER, \ 128 struct drm_vmw_shader_arg) 129 #define DRM_IOCTL_VMW_GB_SURFACE_CREATE \ 130 DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_GB_SURFACE_CREATE, \ 131 union drm_vmw_gb_surface_create_arg) 132 #define DRM_IOCTL_VMW_GB_SURFACE_REF \ 133 DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_GB_SURFACE_REF, \ 134 union drm_vmw_gb_surface_reference_arg) 135 #define DRM_IOCTL_VMW_SYNCCPU \ 136 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_SYNCCPU, \ 137 struct drm_vmw_synccpu_arg) 138 #define DRM_IOCTL_VMW_CREATE_EXTENDED_CONTEXT \ 139 DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_CREATE_EXTENDED_CONTEXT, \ 140 struct drm_vmw_context_arg) 141 142 /** 143 * The core DRM version of this macro doesn't account for 144 * DRM_COMMAND_BASE. 145 */ 146 147 #define VMW_IOCTL_DEF(ioctl, func, flags) \ 148 [DRM_IOCTL_NR(DRM_IOCTL_##ioctl) - DRM_COMMAND_BASE] = {DRM_IOCTL_##ioctl, flags, func} 149 150 /** 151 * Ioctl definitions. 152 */ 153 154 static const struct drm_ioctl_desc vmw_ioctls[] = { 155 VMW_IOCTL_DEF(VMW_GET_PARAM, vmw_getparam_ioctl, 156 DRM_AUTH | DRM_RENDER_ALLOW), 157 VMW_IOCTL_DEF(VMW_ALLOC_DMABUF, vmw_dmabuf_alloc_ioctl, 158 DRM_AUTH | DRM_RENDER_ALLOW), 159 VMW_IOCTL_DEF(VMW_UNREF_DMABUF, vmw_dmabuf_unref_ioctl, 160 DRM_RENDER_ALLOW), 161 VMW_IOCTL_DEF(VMW_CURSOR_BYPASS, 162 vmw_kms_cursor_bypass_ioctl, 163 DRM_MASTER | DRM_CONTROL_ALLOW), 164 165 VMW_IOCTL_DEF(VMW_CONTROL_STREAM, vmw_overlay_ioctl, 166 DRM_MASTER | DRM_CONTROL_ALLOW), 167 VMW_IOCTL_DEF(VMW_CLAIM_STREAM, vmw_stream_claim_ioctl, 168 DRM_MASTER | DRM_CONTROL_ALLOW), 169 VMW_IOCTL_DEF(VMW_UNREF_STREAM, vmw_stream_unref_ioctl, 170 DRM_MASTER | DRM_CONTROL_ALLOW), 171 172 VMW_IOCTL_DEF(VMW_CREATE_CONTEXT, vmw_context_define_ioctl, 173 DRM_AUTH | DRM_RENDER_ALLOW), 174 VMW_IOCTL_DEF(VMW_UNREF_CONTEXT, vmw_context_destroy_ioctl, 175 DRM_RENDER_ALLOW), 176 VMW_IOCTL_DEF(VMW_CREATE_SURFACE, vmw_surface_define_ioctl, 177 DRM_AUTH | DRM_RENDER_ALLOW), 178 VMW_IOCTL_DEF(VMW_UNREF_SURFACE, vmw_surface_destroy_ioctl, 179 DRM_RENDER_ALLOW), 180 VMW_IOCTL_DEF(VMW_REF_SURFACE, vmw_surface_reference_ioctl, 181 DRM_AUTH | DRM_RENDER_ALLOW), 182 VMW_IOCTL_DEF(VMW_EXECBUF, NULL, DRM_AUTH | 183 DRM_RENDER_ALLOW), 184 VMW_IOCTL_DEF(VMW_FENCE_WAIT, vmw_fence_obj_wait_ioctl, 185 DRM_RENDER_ALLOW), 186 VMW_IOCTL_DEF(VMW_FENCE_SIGNALED, 187 vmw_fence_obj_signaled_ioctl, 188 DRM_RENDER_ALLOW), 189 VMW_IOCTL_DEF(VMW_FENCE_UNREF, vmw_fence_obj_unref_ioctl, 190 DRM_RENDER_ALLOW), 191 VMW_IOCTL_DEF(VMW_FENCE_EVENT, vmw_fence_event_ioctl, 192 DRM_AUTH | DRM_RENDER_ALLOW), 193 VMW_IOCTL_DEF(VMW_GET_3D_CAP, vmw_get_cap_3d_ioctl, 194 DRM_AUTH | DRM_RENDER_ALLOW), 195 196 /* these allow direct access to the framebuffers mark as master only */ 197 VMW_IOCTL_DEF(VMW_PRESENT, vmw_present_ioctl, 198 DRM_MASTER | DRM_AUTH), 199 VMW_IOCTL_DEF(VMW_PRESENT_READBACK, 200 vmw_present_readback_ioctl, 201 DRM_MASTER | DRM_AUTH), 202 VMW_IOCTL_DEF(VMW_UPDATE_LAYOUT, 203 vmw_kms_update_layout_ioctl, 204 DRM_MASTER | DRM_CONTROL_ALLOW), 205 VMW_IOCTL_DEF(VMW_CREATE_SHADER, 206 vmw_shader_define_ioctl, 207 DRM_AUTH | DRM_RENDER_ALLOW), 208 VMW_IOCTL_DEF(VMW_UNREF_SHADER, 209 vmw_shader_destroy_ioctl, 210 DRM_RENDER_ALLOW), 211 VMW_IOCTL_DEF(VMW_GB_SURFACE_CREATE, 212 vmw_gb_surface_define_ioctl, 213 DRM_AUTH | DRM_RENDER_ALLOW), 214 VMW_IOCTL_DEF(VMW_GB_SURFACE_REF, 215 vmw_gb_surface_reference_ioctl, 216 DRM_AUTH | DRM_RENDER_ALLOW), 217 VMW_IOCTL_DEF(VMW_SYNCCPU, 218 vmw_user_dmabuf_synccpu_ioctl, 219 DRM_RENDER_ALLOW), 220 VMW_IOCTL_DEF(VMW_CREATE_EXTENDED_CONTEXT, 221 vmw_extended_context_define_ioctl, 222 DRM_AUTH | DRM_RENDER_ALLOW), 223 }; 224 225 static struct pci_device_id vmw_pci_id_list[] = { 226 {0x15ad, 0x0405, PCI_ANY_ID, PCI_ANY_ID, 0, 0, VMWGFX_CHIP_SVGAII}, 227 {0, 0, 0} 228 }; 229 MODULE_DEVICE_TABLE(pci, vmw_pci_id_list); 230 231 static int enable_fbdev = IS_ENABLED(CONFIG_DRM_VMWGFX_FBCON); 232 static int vmw_force_iommu; 233 static int vmw_restrict_iommu; 234 static int vmw_force_coherent; 235 static int vmw_restrict_dma_mask; 236 static int vmw_assume_16bpp; 237 238 static int vmw_probe(struct pci_dev *, const struct pci_device_id *); 239 static void vmw_master_init(struct vmw_master *); 240 static int vmwgfx_pm_notifier(struct notifier_block *nb, unsigned long val, 241 void *ptr); 242 243 MODULE_PARM_DESC(enable_fbdev, "Enable vmwgfx fbdev"); 244 module_param_named(enable_fbdev, enable_fbdev, int, 0600); 245 MODULE_PARM_DESC(force_dma_api, "Force using the DMA API for TTM pages"); 246 module_param_named(force_dma_api, vmw_force_iommu, int, 0600); 247 MODULE_PARM_DESC(restrict_iommu, "Try to limit IOMMU usage for TTM pages"); 248 module_param_named(restrict_iommu, vmw_restrict_iommu, int, 0600); 249 MODULE_PARM_DESC(force_coherent, "Force coherent TTM pages"); 250 module_param_named(force_coherent, vmw_force_coherent, int, 0600); 251 MODULE_PARM_DESC(restrict_dma_mask, "Restrict DMA mask to 44 bits with IOMMU"); 252 module_param_named(restrict_dma_mask, vmw_restrict_dma_mask, int, 0600); 253 MODULE_PARM_DESC(assume_16bpp, "Assume 16-bpp when filtering modes"); 254 module_param_named(assume_16bpp, vmw_assume_16bpp, int, 0600); 255 256 257 static void vmw_print_capabilities(uint32_t capabilities) 258 { 259 DRM_INFO("Capabilities:\n"); 260 if (capabilities & SVGA_CAP_RECT_COPY) 261 DRM_INFO(" Rect copy.\n"); 262 if (capabilities & SVGA_CAP_CURSOR) 263 DRM_INFO(" Cursor.\n"); 264 if (capabilities & SVGA_CAP_CURSOR_BYPASS) 265 DRM_INFO(" Cursor bypass.\n"); 266 if (capabilities & SVGA_CAP_CURSOR_BYPASS_2) 267 DRM_INFO(" Cursor bypass 2.\n"); 268 if (capabilities & SVGA_CAP_8BIT_EMULATION) 269 DRM_INFO(" 8bit emulation.\n"); 270 if (capabilities & SVGA_CAP_ALPHA_CURSOR) 271 DRM_INFO(" Alpha cursor.\n"); 272 if (capabilities & SVGA_CAP_3D) 273 DRM_INFO(" 3D.\n"); 274 if (capabilities & SVGA_CAP_EXTENDED_FIFO) 275 DRM_INFO(" Extended Fifo.\n"); 276 if (capabilities & SVGA_CAP_MULTIMON) 277 DRM_INFO(" Multimon.\n"); 278 if (capabilities & SVGA_CAP_PITCHLOCK) 279 DRM_INFO(" Pitchlock.\n"); 280 if (capabilities & SVGA_CAP_IRQMASK) 281 DRM_INFO(" Irq mask.\n"); 282 if (capabilities & SVGA_CAP_DISPLAY_TOPOLOGY) 283 DRM_INFO(" Display Topology.\n"); 284 if (capabilities & SVGA_CAP_GMR) 285 DRM_INFO(" GMR.\n"); 286 if (capabilities & SVGA_CAP_TRACES) 287 DRM_INFO(" Traces.\n"); 288 if (capabilities & SVGA_CAP_GMR2) 289 DRM_INFO(" GMR2.\n"); 290 if (capabilities & SVGA_CAP_SCREEN_OBJECT_2) 291 DRM_INFO(" Screen Object 2.\n"); 292 if (capabilities & SVGA_CAP_COMMAND_BUFFERS) 293 DRM_INFO(" Command Buffers.\n"); 294 if (capabilities & SVGA_CAP_CMD_BUFFERS_2) 295 DRM_INFO(" Command Buffers 2.\n"); 296 if (capabilities & SVGA_CAP_GBOBJECTS) 297 DRM_INFO(" Guest Backed Resources.\n"); 298 if (capabilities & SVGA_CAP_DX) 299 DRM_INFO(" DX Features.\n"); 300 } 301 302 /** 303 * vmw_dummy_query_bo_create - create a bo to hold a dummy query result 304 * 305 * @dev_priv: A device private structure. 306 * 307 * This function creates a small buffer object that holds the query 308 * result for dummy queries emitted as query barriers. 309 * The function will then map the first page and initialize a pending 310 * occlusion query result structure, Finally it will unmap the buffer. 311 * No interruptible waits are done within this function. 312 * 313 * Returns an error if bo creation or initialization fails. 314 */ 315 static int vmw_dummy_query_bo_create(struct vmw_private *dev_priv) 316 { 317 int ret; 318 struct vmw_dma_buffer *vbo; 319 struct ttm_bo_kmap_obj map; 320 volatile SVGA3dQueryResult *result; 321 bool dummy; 322 323 /* 324 * Create the vbo as pinned, so that a tryreserve will 325 * immediately succeed. This is because we're the only 326 * user of the bo currently. 327 */ 328 vbo = kzalloc(sizeof(*vbo), GFP_KERNEL); 329 if (!vbo) 330 return -ENOMEM; 331 332 ret = vmw_dmabuf_init(dev_priv, vbo, PAGE_SIZE, 333 &vmw_sys_ne_placement, false, 334 &vmw_dmabuf_bo_free); 335 if (unlikely(ret != 0)) 336 return ret; 337 338 ret = ttm_bo_reserve(&vbo->base, false, true, NULL); 339 BUG_ON(ret != 0); 340 vmw_bo_pin_reserved(vbo, true); 341 342 ret = ttm_bo_kmap(&vbo->base, 0, 1, &map); 343 if (likely(ret == 0)) { 344 result = ttm_kmap_obj_virtual(&map, &dummy); 345 result->totalSize = sizeof(*result); 346 result->state = SVGA3D_QUERYSTATE_PENDING; 347 result->result32 = 0xff; 348 ttm_bo_kunmap(&map); 349 } 350 vmw_bo_pin_reserved(vbo, false); 351 ttm_bo_unreserve(&vbo->base); 352 353 if (unlikely(ret != 0)) { 354 DRM_ERROR("Dummy query buffer map failed.\n"); 355 vmw_dmabuf_unreference(&vbo); 356 } else 357 dev_priv->dummy_query_bo = vbo; 358 359 return ret; 360 } 361 362 /** 363 * vmw_request_device_late - Perform late device setup 364 * 365 * @dev_priv: Pointer to device private. 366 * 367 * This function performs setup of otables and enables large command 368 * buffer submission. These tasks are split out to a separate function 369 * because it reverts vmw_release_device_early and is intended to be used 370 * by an error path in the hibernation code. 371 */ 372 static int vmw_request_device_late(struct vmw_private *dev_priv) 373 { 374 int ret; 375 376 if (dev_priv->has_mob) { 377 ret = vmw_otables_setup(dev_priv); 378 if (unlikely(ret != 0)) { 379 DRM_ERROR("Unable to initialize " 380 "guest Memory OBjects.\n"); 381 return ret; 382 } 383 } 384 385 if (dev_priv->cman) { 386 ret = vmw_cmdbuf_set_pool_size(dev_priv->cman, 387 256*4096, 2*4096); 388 if (ret) { 389 struct vmw_cmdbuf_man *man = dev_priv->cman; 390 391 dev_priv->cman = NULL; 392 vmw_cmdbuf_man_destroy(man); 393 } 394 } 395 396 return 0; 397 } 398 399 static int vmw_request_device(struct vmw_private *dev_priv) 400 { 401 int ret; 402 403 ret = vmw_fifo_init(dev_priv, &dev_priv->fifo); 404 if (unlikely(ret != 0)) { 405 DRM_ERROR("Unable to initialize FIFO.\n"); 406 return ret; 407 } 408 vmw_fence_fifo_up(dev_priv->fman); 409 dev_priv->cman = vmw_cmdbuf_man_create(dev_priv); 410 if (IS_ERR(dev_priv->cman)) { 411 dev_priv->cman = NULL; 412 dev_priv->has_dx = false; 413 } 414 415 ret = vmw_request_device_late(dev_priv); 416 if (ret) 417 goto out_no_mob; 418 419 ret = vmw_dummy_query_bo_create(dev_priv); 420 if (unlikely(ret != 0)) 421 goto out_no_query_bo; 422 423 return 0; 424 425 out_no_query_bo: 426 if (dev_priv->cman) 427 vmw_cmdbuf_remove_pool(dev_priv->cman); 428 if (dev_priv->has_mob) { 429 (void) ttm_bo_evict_mm(&dev_priv->bdev, VMW_PL_MOB); 430 vmw_otables_takedown(dev_priv); 431 } 432 if (dev_priv->cman) 433 vmw_cmdbuf_man_destroy(dev_priv->cman); 434 out_no_mob: 435 vmw_fence_fifo_down(dev_priv->fman); 436 vmw_fifo_release(dev_priv, &dev_priv->fifo); 437 return ret; 438 } 439 440 /** 441 * vmw_release_device_early - Early part of fifo takedown. 442 * 443 * @dev_priv: Pointer to device private struct. 444 * 445 * This is the first part of command submission takedown, to be called before 446 * buffer management is taken down. 447 */ 448 static void vmw_release_device_early(struct vmw_private *dev_priv) 449 { 450 /* 451 * Previous destructions should've released 452 * the pinned bo. 453 */ 454 455 BUG_ON(dev_priv->pinned_bo != NULL); 456 457 vmw_dmabuf_unreference(&dev_priv->dummy_query_bo); 458 if (dev_priv->cman) 459 vmw_cmdbuf_remove_pool(dev_priv->cman); 460 461 if (dev_priv->has_mob) { 462 ttm_bo_evict_mm(&dev_priv->bdev, VMW_PL_MOB); 463 vmw_otables_takedown(dev_priv); 464 } 465 } 466 467 /** 468 * vmw_release_device_late - Late part of fifo takedown. 469 * 470 * @dev_priv: Pointer to device private struct. 471 * 472 * This is the last part of the command submission takedown, to be called when 473 * command submission is no longer needed. It may wait on pending fences. 474 */ 475 static void vmw_release_device_late(struct vmw_private *dev_priv) 476 { 477 vmw_fence_fifo_down(dev_priv->fman); 478 if (dev_priv->cman) 479 vmw_cmdbuf_man_destroy(dev_priv->cman); 480 481 vmw_fifo_release(dev_priv, &dev_priv->fifo); 482 } 483 484 /** 485 * Sets the initial_[width|height] fields on the given vmw_private. 486 * 487 * It does so by reading SVGA_REG_[WIDTH|HEIGHT] regs and then 488 * clamping the value to fb_max_[width|height] fields and the 489 * VMW_MIN_INITIAL_[WIDTH|HEIGHT]. 490 * If the values appear to be invalid, set them to 491 * VMW_MIN_INITIAL_[WIDTH|HEIGHT]. 492 */ 493 static void vmw_get_initial_size(struct vmw_private *dev_priv) 494 { 495 uint32_t width; 496 uint32_t height; 497 498 width = vmw_read(dev_priv, SVGA_REG_WIDTH); 499 height = vmw_read(dev_priv, SVGA_REG_HEIGHT); 500 501 width = max_t(uint32_t, width, VMW_MIN_INITIAL_WIDTH); 502 height = max_t(uint32_t, height, VMW_MIN_INITIAL_HEIGHT); 503 504 if (width > dev_priv->fb_max_width || 505 height > dev_priv->fb_max_height) { 506 507 /* 508 * This is a host error and shouldn't occur. 509 */ 510 511 width = VMW_MIN_INITIAL_WIDTH; 512 height = VMW_MIN_INITIAL_HEIGHT; 513 } 514 515 dev_priv->initial_width = width; 516 dev_priv->initial_height = height; 517 } 518 519 /** 520 * vmw_dma_select_mode - Determine how DMA mappings should be set up for this 521 * system. 522 * 523 * @dev_priv: Pointer to a struct vmw_private 524 * 525 * This functions tries to determine the IOMMU setup and what actions 526 * need to be taken by the driver to make system pages visible to the 527 * device. 528 * If this function decides that DMA is not possible, it returns -EINVAL. 529 * The driver may then try to disable features of the device that require 530 * DMA. 531 */ 532 static int vmw_dma_select_mode(struct vmw_private *dev_priv) 533 { 534 static const char *names[vmw_dma_map_max] = { 535 [vmw_dma_phys] = "Using physical TTM page addresses.", 536 [vmw_dma_alloc_coherent] = "Using coherent TTM pages.", 537 [vmw_dma_map_populate] = "Keeping DMA mappings.", 538 [vmw_dma_map_bind] = "Giving up DMA mappings early."}; 539 #ifdef CONFIG_X86 540 const struct dma_map_ops *dma_ops = get_dma_ops(dev_priv->dev->dev); 541 542 #ifdef CONFIG_INTEL_IOMMU 543 if (intel_iommu_enabled) { 544 dev_priv->map_mode = vmw_dma_map_populate; 545 goto out_fixup; 546 } 547 #endif 548 549 if (!(vmw_force_iommu || vmw_force_coherent)) { 550 dev_priv->map_mode = vmw_dma_phys; 551 DRM_INFO("DMA map mode: %s\n", names[dev_priv->map_mode]); 552 return 0; 553 } 554 555 dev_priv->map_mode = vmw_dma_map_populate; 556 557 if (dma_ops->sync_single_for_cpu) 558 dev_priv->map_mode = vmw_dma_alloc_coherent; 559 #ifdef CONFIG_SWIOTLB 560 if (swiotlb_nr_tbl() == 0) 561 dev_priv->map_mode = vmw_dma_map_populate; 562 #endif 563 564 #ifdef CONFIG_INTEL_IOMMU 565 out_fixup: 566 #endif 567 if (dev_priv->map_mode == vmw_dma_map_populate && 568 vmw_restrict_iommu) 569 dev_priv->map_mode = vmw_dma_map_bind; 570 571 if (vmw_force_coherent) 572 dev_priv->map_mode = vmw_dma_alloc_coherent; 573 574 #if !defined(CONFIG_SWIOTLB) && !defined(CONFIG_INTEL_IOMMU) 575 /* 576 * No coherent page pool 577 */ 578 if (dev_priv->map_mode == vmw_dma_alloc_coherent) 579 return -EINVAL; 580 #endif 581 582 #else /* CONFIG_X86 */ 583 dev_priv->map_mode = vmw_dma_map_populate; 584 #endif /* CONFIG_X86 */ 585 586 DRM_INFO("DMA map mode: %s\n", names[dev_priv->map_mode]); 587 588 return 0; 589 } 590 591 /** 592 * vmw_dma_masks - set required page- and dma masks 593 * 594 * @dev: Pointer to struct drm-device 595 * 596 * With 32-bit we can only handle 32 bit PFNs. Optionally set that 597 * restriction also for 64-bit systems. 598 */ 599 #ifdef CONFIG_INTEL_IOMMU 600 static int vmw_dma_masks(struct vmw_private *dev_priv) 601 { 602 struct drm_device *dev = dev_priv->dev; 603 604 if (intel_iommu_enabled && 605 (sizeof(unsigned long) == 4 || vmw_restrict_dma_mask)) { 606 DRM_INFO("Restricting DMA addresses to 44 bits.\n"); 607 return dma_set_mask(dev->dev, DMA_BIT_MASK(44)); 608 } 609 return 0; 610 } 611 #else 612 static int vmw_dma_masks(struct vmw_private *dev_priv) 613 { 614 return 0; 615 } 616 #endif 617 618 static int vmw_driver_load(struct drm_device *dev, unsigned long chipset) 619 { 620 struct vmw_private *dev_priv; 621 int ret; 622 uint32_t svga_id; 623 enum vmw_res_type i; 624 bool refuse_dma = false; 625 char host_log[100] = {0}; 626 627 dev_priv = kzalloc(sizeof(*dev_priv), GFP_KERNEL); 628 if (unlikely(dev_priv == NULL)) { 629 DRM_ERROR("Failed allocating a device private struct.\n"); 630 return -ENOMEM; 631 } 632 633 pci_set_master(dev->pdev); 634 635 dev_priv->dev = dev; 636 dev_priv->vmw_chipset = chipset; 637 dev_priv->last_read_seqno = (uint32_t) -100; 638 mutex_init(&dev_priv->cmdbuf_mutex); 639 mutex_init(&dev_priv->release_mutex); 640 mutex_init(&dev_priv->binding_mutex); 641 mutex_init(&dev_priv->global_kms_state_mutex); 642 rwlock_init(&dev_priv->resource_lock); 643 ttm_lock_init(&dev_priv->reservation_sem); 644 spin_lock_init(&dev_priv->hw_lock); 645 spin_lock_init(&dev_priv->waiter_lock); 646 spin_lock_init(&dev_priv->cap_lock); 647 spin_lock_init(&dev_priv->svga_lock); 648 649 for (i = vmw_res_context; i < vmw_res_max; ++i) { 650 idr_init(&dev_priv->res_idr[i]); 651 INIT_LIST_HEAD(&dev_priv->res_lru[i]); 652 } 653 654 mutex_init(&dev_priv->init_mutex); 655 init_waitqueue_head(&dev_priv->fence_queue); 656 init_waitqueue_head(&dev_priv->fifo_queue); 657 dev_priv->fence_queue_waiters = 0; 658 dev_priv->fifo_queue_waiters = 0; 659 660 dev_priv->used_memory_size = 0; 661 662 dev_priv->io_start = pci_resource_start(dev->pdev, 0); 663 dev_priv->vram_start = pci_resource_start(dev->pdev, 1); 664 dev_priv->mmio_start = pci_resource_start(dev->pdev, 2); 665 666 dev_priv->assume_16bpp = !!vmw_assume_16bpp; 667 668 dev_priv->enable_fb = enable_fbdev; 669 670 vmw_write(dev_priv, SVGA_REG_ID, SVGA_ID_2); 671 svga_id = vmw_read(dev_priv, SVGA_REG_ID); 672 if (svga_id != SVGA_ID_2) { 673 ret = -ENOSYS; 674 DRM_ERROR("Unsupported SVGA ID 0x%x\n", svga_id); 675 goto out_err0; 676 } 677 678 dev_priv->capabilities = vmw_read(dev_priv, SVGA_REG_CAPABILITIES); 679 ret = vmw_dma_select_mode(dev_priv); 680 if (unlikely(ret != 0)) { 681 DRM_INFO("Restricting capabilities due to IOMMU setup.\n"); 682 refuse_dma = true; 683 } 684 685 dev_priv->vram_size = vmw_read(dev_priv, SVGA_REG_VRAM_SIZE); 686 dev_priv->mmio_size = vmw_read(dev_priv, SVGA_REG_MEM_SIZE); 687 dev_priv->fb_max_width = vmw_read(dev_priv, SVGA_REG_MAX_WIDTH); 688 dev_priv->fb_max_height = vmw_read(dev_priv, SVGA_REG_MAX_HEIGHT); 689 690 vmw_get_initial_size(dev_priv); 691 692 if (dev_priv->capabilities & SVGA_CAP_GMR2) { 693 dev_priv->max_gmr_ids = 694 vmw_read(dev_priv, SVGA_REG_GMR_MAX_IDS); 695 dev_priv->max_gmr_pages = 696 vmw_read(dev_priv, SVGA_REG_GMRS_MAX_PAGES); 697 dev_priv->memory_size = 698 vmw_read(dev_priv, SVGA_REG_MEMORY_SIZE); 699 dev_priv->memory_size -= dev_priv->vram_size; 700 } else { 701 /* 702 * An arbitrary limit of 512MiB on surface 703 * memory. But all HWV8 hardware supports GMR2. 704 */ 705 dev_priv->memory_size = 512*1024*1024; 706 } 707 dev_priv->max_mob_pages = 0; 708 dev_priv->max_mob_size = 0; 709 if (dev_priv->capabilities & SVGA_CAP_GBOBJECTS) { 710 uint64_t mem_size = 711 vmw_read(dev_priv, 712 SVGA_REG_SUGGESTED_GBOBJECT_MEM_SIZE_KB); 713 714 /* 715 * Workaround for low memory 2D VMs to compensate for the 716 * allocation taken by fbdev 717 */ 718 if (!(dev_priv->capabilities & SVGA_CAP_3D)) 719 mem_size *= 2; 720 721 dev_priv->max_mob_pages = mem_size * 1024 / PAGE_SIZE; 722 dev_priv->prim_bb_mem = 723 vmw_read(dev_priv, 724 SVGA_REG_MAX_PRIMARY_BOUNDING_BOX_MEM); 725 dev_priv->max_mob_size = 726 vmw_read(dev_priv, SVGA_REG_MOB_MAX_SIZE); 727 dev_priv->stdu_max_width = 728 vmw_read(dev_priv, SVGA_REG_SCREENTARGET_MAX_WIDTH); 729 dev_priv->stdu_max_height = 730 vmw_read(dev_priv, SVGA_REG_SCREENTARGET_MAX_HEIGHT); 731 732 vmw_write(dev_priv, SVGA_REG_DEV_CAP, 733 SVGA3D_DEVCAP_MAX_TEXTURE_WIDTH); 734 dev_priv->texture_max_width = vmw_read(dev_priv, 735 SVGA_REG_DEV_CAP); 736 vmw_write(dev_priv, SVGA_REG_DEV_CAP, 737 SVGA3D_DEVCAP_MAX_TEXTURE_HEIGHT); 738 dev_priv->texture_max_height = vmw_read(dev_priv, 739 SVGA_REG_DEV_CAP); 740 } else { 741 dev_priv->texture_max_width = 8192; 742 dev_priv->texture_max_height = 8192; 743 dev_priv->prim_bb_mem = dev_priv->vram_size; 744 } 745 746 vmw_print_capabilities(dev_priv->capabilities); 747 748 ret = vmw_dma_masks(dev_priv); 749 if (unlikely(ret != 0)) 750 goto out_err0; 751 752 if (dev_priv->capabilities & SVGA_CAP_GMR2) { 753 DRM_INFO("Max GMR ids is %u\n", 754 (unsigned)dev_priv->max_gmr_ids); 755 DRM_INFO("Max number of GMR pages is %u\n", 756 (unsigned)dev_priv->max_gmr_pages); 757 DRM_INFO("Max dedicated hypervisor surface memory is %u kiB\n", 758 (unsigned)dev_priv->memory_size / 1024); 759 } 760 DRM_INFO("Maximum display memory size is %u kiB\n", 761 dev_priv->prim_bb_mem / 1024); 762 DRM_INFO("VRAM at 0x%08x size is %u kiB\n", 763 dev_priv->vram_start, dev_priv->vram_size / 1024); 764 DRM_INFO("MMIO at 0x%08x size is %u kiB\n", 765 dev_priv->mmio_start, dev_priv->mmio_size / 1024); 766 767 ret = vmw_ttm_global_init(dev_priv); 768 if (unlikely(ret != 0)) 769 goto out_err0; 770 771 772 vmw_master_init(&dev_priv->fbdev_master); 773 ttm_lock_set_kill(&dev_priv->fbdev_master.lock, false, SIGTERM); 774 dev_priv->active_master = &dev_priv->fbdev_master; 775 776 dev_priv->mmio_virt = memremap(dev_priv->mmio_start, 777 dev_priv->mmio_size, MEMREMAP_WB); 778 779 if (unlikely(dev_priv->mmio_virt == NULL)) { 780 ret = -ENOMEM; 781 DRM_ERROR("Failed mapping MMIO.\n"); 782 goto out_err3; 783 } 784 785 /* Need mmio memory to check for fifo pitchlock cap. */ 786 if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY) && 787 !(dev_priv->capabilities & SVGA_CAP_PITCHLOCK) && 788 !vmw_fifo_have_pitchlock(dev_priv)) { 789 ret = -ENOSYS; 790 DRM_ERROR("Hardware has no pitchlock\n"); 791 goto out_err4; 792 } 793 794 dev_priv->tdev = ttm_object_device_init 795 (dev_priv->mem_global_ref.object, 12, &vmw_prime_dmabuf_ops); 796 797 if (unlikely(dev_priv->tdev == NULL)) { 798 DRM_ERROR("Unable to initialize TTM object management.\n"); 799 ret = -ENOMEM; 800 goto out_err4; 801 } 802 803 dev->dev_private = dev_priv; 804 805 ret = pci_request_regions(dev->pdev, "vmwgfx probe"); 806 dev_priv->stealth = (ret != 0); 807 if (dev_priv->stealth) { 808 /** 809 * Request at least the mmio PCI resource. 810 */ 811 812 DRM_INFO("It appears like vesafb is loaded. " 813 "Ignore above error if any.\n"); 814 ret = pci_request_region(dev->pdev, 2, "vmwgfx stealth probe"); 815 if (unlikely(ret != 0)) { 816 DRM_ERROR("Failed reserving the SVGA MMIO resource.\n"); 817 goto out_no_device; 818 } 819 } 820 821 if (dev_priv->capabilities & SVGA_CAP_IRQMASK) { 822 ret = drm_irq_install(dev, dev->pdev->irq); 823 if (ret != 0) { 824 DRM_ERROR("Failed installing irq: %d\n", ret); 825 goto out_no_irq; 826 } 827 } 828 829 dev_priv->fman = vmw_fence_manager_init(dev_priv); 830 if (unlikely(dev_priv->fman == NULL)) { 831 ret = -ENOMEM; 832 goto out_no_fman; 833 } 834 835 ret = ttm_bo_device_init(&dev_priv->bdev, 836 dev_priv->bo_global_ref.ref.object, 837 &vmw_bo_driver, 838 dev->anon_inode->i_mapping, 839 VMWGFX_FILE_PAGE_OFFSET, 840 false); 841 if (unlikely(ret != 0)) { 842 DRM_ERROR("Failed initializing TTM buffer object driver.\n"); 843 goto out_no_bdev; 844 } 845 846 /* 847 * Enable VRAM, but initially don't use it until SVGA is enabled and 848 * unhidden. 849 */ 850 ret = ttm_bo_init_mm(&dev_priv->bdev, TTM_PL_VRAM, 851 (dev_priv->vram_size >> PAGE_SHIFT)); 852 if (unlikely(ret != 0)) { 853 DRM_ERROR("Failed initializing memory manager for VRAM.\n"); 854 goto out_no_vram; 855 } 856 dev_priv->bdev.man[TTM_PL_VRAM].use_type = false; 857 858 dev_priv->has_gmr = true; 859 if (((dev_priv->capabilities & (SVGA_CAP_GMR | SVGA_CAP_GMR2)) == 0) || 860 refuse_dma || ttm_bo_init_mm(&dev_priv->bdev, VMW_PL_GMR, 861 VMW_PL_GMR) != 0) { 862 DRM_INFO("No GMR memory available. " 863 "Graphics memory resources are very limited.\n"); 864 dev_priv->has_gmr = false; 865 } 866 867 if (dev_priv->capabilities & SVGA_CAP_GBOBJECTS) { 868 dev_priv->has_mob = true; 869 if (ttm_bo_init_mm(&dev_priv->bdev, VMW_PL_MOB, 870 VMW_PL_MOB) != 0) { 871 DRM_INFO("No MOB memory available. " 872 "3D will be disabled.\n"); 873 dev_priv->has_mob = false; 874 } 875 } 876 877 if (dev_priv->has_mob) { 878 spin_lock(&dev_priv->cap_lock); 879 vmw_write(dev_priv, SVGA_REG_DEV_CAP, SVGA3D_DEVCAP_DX); 880 dev_priv->has_dx = !!vmw_read(dev_priv, SVGA_REG_DEV_CAP); 881 spin_unlock(&dev_priv->cap_lock); 882 } 883 884 885 ret = vmw_kms_init(dev_priv); 886 if (unlikely(ret != 0)) 887 goto out_no_kms; 888 vmw_overlay_init(dev_priv); 889 890 ret = vmw_request_device(dev_priv); 891 if (ret) 892 goto out_no_fifo; 893 894 DRM_INFO("DX: %s\n", dev_priv->has_dx ? "yes." : "no."); 895 896 snprintf(host_log, sizeof(host_log), "vmwgfx: %s-%s", 897 VMWGFX_REPO, VMWGFX_GIT_VERSION); 898 vmw_host_log(host_log); 899 900 memset(host_log, 0, sizeof(host_log)); 901 snprintf(host_log, sizeof(host_log), "vmwgfx: Module Version: %d.%d.%d", 902 VMWGFX_DRIVER_MAJOR, VMWGFX_DRIVER_MINOR, 903 VMWGFX_DRIVER_PATCHLEVEL); 904 vmw_host_log(host_log); 905 906 if (dev_priv->enable_fb) { 907 vmw_fifo_resource_inc(dev_priv); 908 vmw_svga_enable(dev_priv); 909 vmw_fb_init(dev_priv); 910 } 911 912 dev_priv->pm_nb.notifier_call = vmwgfx_pm_notifier; 913 register_pm_notifier(&dev_priv->pm_nb); 914 915 return 0; 916 917 out_no_fifo: 918 vmw_overlay_close(dev_priv); 919 vmw_kms_close(dev_priv); 920 out_no_kms: 921 if (dev_priv->has_mob) 922 (void) ttm_bo_clean_mm(&dev_priv->bdev, VMW_PL_MOB); 923 if (dev_priv->has_gmr) 924 (void) ttm_bo_clean_mm(&dev_priv->bdev, VMW_PL_GMR); 925 (void)ttm_bo_clean_mm(&dev_priv->bdev, TTM_PL_VRAM); 926 out_no_vram: 927 (void)ttm_bo_device_release(&dev_priv->bdev); 928 out_no_bdev: 929 vmw_fence_manager_takedown(dev_priv->fman); 930 out_no_fman: 931 if (dev_priv->capabilities & SVGA_CAP_IRQMASK) 932 drm_irq_uninstall(dev_priv->dev); 933 out_no_irq: 934 if (dev_priv->stealth) 935 pci_release_region(dev->pdev, 2); 936 else 937 pci_release_regions(dev->pdev); 938 out_no_device: 939 ttm_object_device_release(&dev_priv->tdev); 940 out_err4: 941 memunmap(dev_priv->mmio_virt); 942 out_err3: 943 vmw_ttm_global_release(dev_priv); 944 out_err0: 945 for (i = vmw_res_context; i < vmw_res_max; ++i) 946 idr_destroy(&dev_priv->res_idr[i]); 947 948 if (dev_priv->ctx.staged_bindings) 949 vmw_binding_state_free(dev_priv->ctx.staged_bindings); 950 kfree(dev_priv); 951 return ret; 952 } 953 954 static int vmw_driver_unload(struct drm_device *dev) 955 { 956 struct vmw_private *dev_priv = vmw_priv(dev); 957 enum vmw_res_type i; 958 959 unregister_pm_notifier(&dev_priv->pm_nb); 960 961 if (dev_priv->ctx.res_ht_initialized) 962 drm_ht_remove(&dev_priv->ctx.res_ht); 963 vfree(dev_priv->ctx.cmd_bounce); 964 if (dev_priv->enable_fb) { 965 vmw_fb_off(dev_priv); 966 vmw_fb_close(dev_priv); 967 vmw_fifo_resource_dec(dev_priv); 968 vmw_svga_disable(dev_priv); 969 } 970 971 vmw_kms_close(dev_priv); 972 vmw_overlay_close(dev_priv); 973 974 if (dev_priv->has_gmr) 975 (void)ttm_bo_clean_mm(&dev_priv->bdev, VMW_PL_GMR); 976 (void)ttm_bo_clean_mm(&dev_priv->bdev, TTM_PL_VRAM); 977 978 vmw_release_device_early(dev_priv); 979 if (dev_priv->has_mob) 980 (void) ttm_bo_clean_mm(&dev_priv->bdev, VMW_PL_MOB); 981 (void) ttm_bo_device_release(&dev_priv->bdev); 982 vmw_release_device_late(dev_priv); 983 vmw_fence_manager_takedown(dev_priv->fman); 984 if (dev_priv->capabilities & SVGA_CAP_IRQMASK) 985 drm_irq_uninstall(dev_priv->dev); 986 if (dev_priv->stealth) 987 pci_release_region(dev->pdev, 2); 988 else 989 pci_release_regions(dev->pdev); 990 991 ttm_object_device_release(&dev_priv->tdev); 992 memunmap(dev_priv->mmio_virt); 993 if (dev_priv->ctx.staged_bindings) 994 vmw_binding_state_free(dev_priv->ctx.staged_bindings); 995 vmw_ttm_global_release(dev_priv); 996 997 for (i = vmw_res_context; i < vmw_res_max; ++i) 998 idr_destroy(&dev_priv->res_idr[i]); 999 1000 kfree(dev_priv); 1001 1002 return 0; 1003 } 1004 1005 static void vmw_postclose(struct drm_device *dev, 1006 struct drm_file *file_priv) 1007 { 1008 struct vmw_fpriv *vmw_fp; 1009 1010 vmw_fp = vmw_fpriv(file_priv); 1011 1012 if (vmw_fp->locked_master) { 1013 struct vmw_master *vmaster = 1014 vmw_master(vmw_fp->locked_master); 1015 1016 ttm_lock_set_kill(&vmaster->lock, true, SIGTERM); 1017 ttm_vt_unlock(&vmaster->lock); 1018 drm_master_put(&vmw_fp->locked_master); 1019 } 1020 1021 ttm_object_file_release(&vmw_fp->tfile); 1022 kfree(vmw_fp); 1023 } 1024 1025 static int vmw_driver_open(struct drm_device *dev, struct drm_file *file_priv) 1026 { 1027 struct vmw_private *dev_priv = vmw_priv(dev); 1028 struct vmw_fpriv *vmw_fp; 1029 int ret = -ENOMEM; 1030 1031 vmw_fp = kzalloc(sizeof(*vmw_fp), GFP_KERNEL); 1032 if (unlikely(vmw_fp == NULL)) 1033 return ret; 1034 1035 vmw_fp->tfile = ttm_object_file_init(dev_priv->tdev, 10); 1036 if (unlikely(vmw_fp->tfile == NULL)) 1037 goto out_no_tfile; 1038 1039 file_priv->driver_priv = vmw_fp; 1040 1041 return 0; 1042 1043 out_no_tfile: 1044 kfree(vmw_fp); 1045 return ret; 1046 } 1047 1048 static struct vmw_master *vmw_master_check(struct drm_device *dev, 1049 struct drm_file *file_priv, 1050 unsigned int flags) 1051 { 1052 int ret; 1053 struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv); 1054 struct vmw_master *vmaster; 1055 1056 if (file_priv->minor->type != DRM_MINOR_LEGACY || 1057 !(flags & DRM_AUTH)) 1058 return NULL; 1059 1060 ret = mutex_lock_interruptible(&dev->master_mutex); 1061 if (unlikely(ret != 0)) 1062 return ERR_PTR(-ERESTARTSYS); 1063 1064 if (file_priv->is_master) { 1065 mutex_unlock(&dev->master_mutex); 1066 return NULL; 1067 } 1068 1069 /* 1070 * Check if we were previously master, but now dropped. In that 1071 * case, allow at least render node functionality. 1072 */ 1073 if (vmw_fp->locked_master) { 1074 mutex_unlock(&dev->master_mutex); 1075 1076 if (flags & DRM_RENDER_ALLOW) 1077 return NULL; 1078 1079 DRM_ERROR("Dropped master trying to access ioctl that " 1080 "requires authentication.\n"); 1081 return ERR_PTR(-EACCES); 1082 } 1083 mutex_unlock(&dev->master_mutex); 1084 1085 /* 1086 * Take the TTM lock. Possibly sleep waiting for the authenticating 1087 * master to become master again, or for a SIGTERM if the 1088 * authenticating master exits. 1089 */ 1090 vmaster = vmw_master(file_priv->master); 1091 ret = ttm_read_lock(&vmaster->lock, true); 1092 if (unlikely(ret != 0)) 1093 vmaster = ERR_PTR(ret); 1094 1095 return vmaster; 1096 } 1097 1098 static long vmw_generic_ioctl(struct file *filp, unsigned int cmd, 1099 unsigned long arg, 1100 long (*ioctl_func)(struct file *, unsigned int, 1101 unsigned long)) 1102 { 1103 struct drm_file *file_priv = filp->private_data; 1104 struct drm_device *dev = file_priv->minor->dev; 1105 unsigned int nr = DRM_IOCTL_NR(cmd); 1106 struct vmw_master *vmaster; 1107 unsigned int flags; 1108 long ret; 1109 1110 /* 1111 * Do extra checking on driver private ioctls. 1112 */ 1113 1114 if ((nr >= DRM_COMMAND_BASE) && (nr < DRM_COMMAND_END) 1115 && (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls)) { 1116 const struct drm_ioctl_desc *ioctl = 1117 &vmw_ioctls[nr - DRM_COMMAND_BASE]; 1118 1119 if (nr == DRM_COMMAND_BASE + DRM_VMW_EXECBUF) { 1120 ret = (long) drm_ioctl_permit(ioctl->flags, file_priv); 1121 if (unlikely(ret != 0)) 1122 return ret; 1123 1124 if (unlikely((cmd & (IOC_IN | IOC_OUT)) != IOC_IN)) 1125 goto out_io_encoding; 1126 1127 return (long) vmw_execbuf_ioctl(dev, arg, file_priv, 1128 _IOC_SIZE(cmd)); 1129 } 1130 1131 if (unlikely(ioctl->cmd != cmd)) 1132 goto out_io_encoding; 1133 1134 flags = ioctl->flags; 1135 } else if (!drm_ioctl_flags(nr, &flags)) 1136 return -EINVAL; 1137 1138 vmaster = vmw_master_check(dev, file_priv, flags); 1139 if (IS_ERR(vmaster)) { 1140 ret = PTR_ERR(vmaster); 1141 1142 if (ret != -ERESTARTSYS) 1143 DRM_INFO("IOCTL ERROR Command %d, Error %ld.\n", 1144 nr, ret); 1145 return ret; 1146 } 1147 1148 ret = ioctl_func(filp, cmd, arg); 1149 if (vmaster) 1150 ttm_read_unlock(&vmaster->lock); 1151 1152 return ret; 1153 1154 out_io_encoding: 1155 DRM_ERROR("Invalid command format, ioctl %d\n", 1156 nr - DRM_COMMAND_BASE); 1157 1158 return -EINVAL; 1159 } 1160 1161 static long vmw_unlocked_ioctl(struct file *filp, unsigned int cmd, 1162 unsigned long arg) 1163 { 1164 return vmw_generic_ioctl(filp, cmd, arg, &drm_ioctl); 1165 } 1166 1167 #ifdef CONFIG_COMPAT 1168 static long vmw_compat_ioctl(struct file *filp, unsigned int cmd, 1169 unsigned long arg) 1170 { 1171 return vmw_generic_ioctl(filp, cmd, arg, &drm_compat_ioctl); 1172 } 1173 #endif 1174 1175 static void vmw_lastclose(struct drm_device *dev) 1176 { 1177 } 1178 1179 static void vmw_master_init(struct vmw_master *vmaster) 1180 { 1181 ttm_lock_init(&vmaster->lock); 1182 } 1183 1184 static int vmw_master_create(struct drm_device *dev, 1185 struct drm_master *master) 1186 { 1187 struct vmw_master *vmaster; 1188 1189 vmaster = kzalloc(sizeof(*vmaster), GFP_KERNEL); 1190 if (unlikely(vmaster == NULL)) 1191 return -ENOMEM; 1192 1193 vmw_master_init(vmaster); 1194 ttm_lock_set_kill(&vmaster->lock, true, SIGTERM); 1195 master->driver_priv = vmaster; 1196 1197 return 0; 1198 } 1199 1200 static void vmw_master_destroy(struct drm_device *dev, 1201 struct drm_master *master) 1202 { 1203 struct vmw_master *vmaster = vmw_master(master); 1204 1205 master->driver_priv = NULL; 1206 kfree(vmaster); 1207 } 1208 1209 static int vmw_master_set(struct drm_device *dev, 1210 struct drm_file *file_priv, 1211 bool from_open) 1212 { 1213 struct vmw_private *dev_priv = vmw_priv(dev); 1214 struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv); 1215 struct vmw_master *active = dev_priv->active_master; 1216 struct vmw_master *vmaster = vmw_master(file_priv->master); 1217 int ret = 0; 1218 1219 if (active) { 1220 BUG_ON(active != &dev_priv->fbdev_master); 1221 ret = ttm_vt_lock(&active->lock, false, vmw_fp->tfile); 1222 if (unlikely(ret != 0)) 1223 return ret; 1224 1225 ttm_lock_set_kill(&active->lock, true, SIGTERM); 1226 dev_priv->active_master = NULL; 1227 } 1228 1229 ttm_lock_set_kill(&vmaster->lock, false, SIGTERM); 1230 if (!from_open) { 1231 ttm_vt_unlock(&vmaster->lock); 1232 BUG_ON(vmw_fp->locked_master != file_priv->master); 1233 drm_master_put(&vmw_fp->locked_master); 1234 } 1235 1236 dev_priv->active_master = vmaster; 1237 drm_sysfs_hotplug_event(dev); 1238 1239 return 0; 1240 } 1241 1242 static void vmw_master_drop(struct drm_device *dev, 1243 struct drm_file *file_priv, 1244 bool from_release) 1245 { 1246 struct vmw_private *dev_priv = vmw_priv(dev); 1247 struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv); 1248 struct vmw_master *vmaster = vmw_master(file_priv->master); 1249 int ret; 1250 1251 /** 1252 * Make sure the master doesn't disappear while we have 1253 * it locked. 1254 */ 1255 1256 vmw_fp->locked_master = drm_master_get(file_priv->master); 1257 ret = ttm_vt_lock(&vmaster->lock, false, vmw_fp->tfile); 1258 vmw_kms_legacy_hotspot_clear(dev_priv); 1259 if (unlikely((ret != 0))) { 1260 DRM_ERROR("Unable to lock TTM at VT switch.\n"); 1261 drm_master_put(&vmw_fp->locked_master); 1262 } 1263 1264 ttm_lock_set_kill(&vmaster->lock, false, SIGTERM); 1265 1266 if (!dev_priv->enable_fb) 1267 vmw_svga_disable(dev_priv); 1268 1269 dev_priv->active_master = &dev_priv->fbdev_master; 1270 ttm_lock_set_kill(&dev_priv->fbdev_master.lock, false, SIGTERM); 1271 ttm_vt_unlock(&dev_priv->fbdev_master.lock); 1272 1273 if (dev_priv->enable_fb) 1274 vmw_fb_on(dev_priv); 1275 } 1276 1277 /** 1278 * __vmw_svga_enable - Enable SVGA mode, FIFO and use of VRAM. 1279 * 1280 * @dev_priv: Pointer to device private struct. 1281 * Needs the reservation sem to be held in non-exclusive mode. 1282 */ 1283 static void __vmw_svga_enable(struct vmw_private *dev_priv) 1284 { 1285 spin_lock(&dev_priv->svga_lock); 1286 if (!dev_priv->bdev.man[TTM_PL_VRAM].use_type) { 1287 vmw_write(dev_priv, SVGA_REG_ENABLE, SVGA_REG_ENABLE); 1288 dev_priv->bdev.man[TTM_PL_VRAM].use_type = true; 1289 } 1290 spin_unlock(&dev_priv->svga_lock); 1291 } 1292 1293 /** 1294 * vmw_svga_enable - Enable SVGA mode, FIFO and use of VRAM. 1295 * 1296 * @dev_priv: Pointer to device private struct. 1297 */ 1298 void vmw_svga_enable(struct vmw_private *dev_priv) 1299 { 1300 ttm_read_lock(&dev_priv->reservation_sem, false); 1301 __vmw_svga_enable(dev_priv); 1302 ttm_read_unlock(&dev_priv->reservation_sem); 1303 } 1304 1305 /** 1306 * __vmw_svga_disable - Disable SVGA mode and use of VRAM. 1307 * 1308 * @dev_priv: Pointer to device private struct. 1309 * Needs the reservation sem to be held in exclusive mode. 1310 * Will not empty VRAM. VRAM must be emptied by caller. 1311 */ 1312 static void __vmw_svga_disable(struct vmw_private *dev_priv) 1313 { 1314 spin_lock(&dev_priv->svga_lock); 1315 if (dev_priv->bdev.man[TTM_PL_VRAM].use_type) { 1316 dev_priv->bdev.man[TTM_PL_VRAM].use_type = false; 1317 vmw_write(dev_priv, SVGA_REG_ENABLE, 1318 SVGA_REG_ENABLE_HIDE | 1319 SVGA_REG_ENABLE_ENABLE); 1320 } 1321 spin_unlock(&dev_priv->svga_lock); 1322 } 1323 1324 /** 1325 * vmw_svga_disable - Disable SVGA_MODE, and use of VRAM. Keep the fifo 1326 * running. 1327 * 1328 * @dev_priv: Pointer to device private struct. 1329 * Will empty VRAM. 1330 */ 1331 void vmw_svga_disable(struct vmw_private *dev_priv) 1332 { 1333 ttm_write_lock(&dev_priv->reservation_sem, false); 1334 spin_lock(&dev_priv->svga_lock); 1335 if (dev_priv->bdev.man[TTM_PL_VRAM].use_type) { 1336 dev_priv->bdev.man[TTM_PL_VRAM].use_type = false; 1337 spin_unlock(&dev_priv->svga_lock); 1338 if (ttm_bo_evict_mm(&dev_priv->bdev, TTM_PL_VRAM)) 1339 DRM_ERROR("Failed evicting VRAM buffers.\n"); 1340 vmw_write(dev_priv, SVGA_REG_ENABLE, 1341 SVGA_REG_ENABLE_HIDE | 1342 SVGA_REG_ENABLE_ENABLE); 1343 } else 1344 spin_unlock(&dev_priv->svga_lock); 1345 ttm_write_unlock(&dev_priv->reservation_sem); 1346 } 1347 1348 static void vmw_remove(struct pci_dev *pdev) 1349 { 1350 struct drm_device *dev = pci_get_drvdata(pdev); 1351 1352 pci_disable_device(pdev); 1353 drm_put_dev(dev); 1354 } 1355 1356 static int vmwgfx_pm_notifier(struct notifier_block *nb, unsigned long val, 1357 void *ptr) 1358 { 1359 struct vmw_private *dev_priv = 1360 container_of(nb, struct vmw_private, pm_nb); 1361 1362 switch (val) { 1363 case PM_HIBERNATION_PREPARE: 1364 if (dev_priv->enable_fb) 1365 vmw_fb_off(dev_priv); 1366 ttm_suspend_lock(&dev_priv->reservation_sem); 1367 1368 /* 1369 * This empties VRAM and unbinds all GMR bindings. 1370 * Buffer contents is moved to swappable memory. 1371 */ 1372 vmw_execbuf_release_pinned_bo(dev_priv); 1373 vmw_resource_evict_all(dev_priv); 1374 vmw_release_device_early(dev_priv); 1375 ttm_bo_swapout_all(&dev_priv->bdev); 1376 vmw_fence_fifo_down(dev_priv->fman); 1377 break; 1378 case PM_POST_HIBERNATION: 1379 case PM_POST_RESTORE: 1380 vmw_fence_fifo_up(dev_priv->fman); 1381 ttm_suspend_unlock(&dev_priv->reservation_sem); 1382 if (dev_priv->enable_fb) 1383 vmw_fb_on(dev_priv); 1384 break; 1385 case PM_RESTORE_PREPARE: 1386 break; 1387 default: 1388 break; 1389 } 1390 return 0; 1391 } 1392 1393 static int vmw_pci_suspend(struct pci_dev *pdev, pm_message_t state) 1394 { 1395 struct drm_device *dev = pci_get_drvdata(pdev); 1396 struct vmw_private *dev_priv = vmw_priv(dev); 1397 1398 if (dev_priv->refuse_hibernation) 1399 return -EBUSY; 1400 1401 pci_save_state(pdev); 1402 pci_disable_device(pdev); 1403 pci_set_power_state(pdev, PCI_D3hot); 1404 return 0; 1405 } 1406 1407 static int vmw_pci_resume(struct pci_dev *pdev) 1408 { 1409 pci_set_power_state(pdev, PCI_D0); 1410 pci_restore_state(pdev); 1411 return pci_enable_device(pdev); 1412 } 1413 1414 static int vmw_pm_suspend(struct device *kdev) 1415 { 1416 struct pci_dev *pdev = to_pci_dev(kdev); 1417 struct pm_message dummy; 1418 1419 dummy.event = 0; 1420 1421 return vmw_pci_suspend(pdev, dummy); 1422 } 1423 1424 static int vmw_pm_resume(struct device *kdev) 1425 { 1426 struct pci_dev *pdev = to_pci_dev(kdev); 1427 1428 return vmw_pci_resume(pdev); 1429 } 1430 1431 static int vmw_pm_freeze(struct device *kdev) 1432 { 1433 struct pci_dev *pdev = to_pci_dev(kdev); 1434 struct drm_device *dev = pci_get_drvdata(pdev); 1435 struct vmw_private *dev_priv = vmw_priv(dev); 1436 1437 dev_priv->suspended = true; 1438 if (dev_priv->enable_fb) 1439 vmw_fifo_resource_dec(dev_priv); 1440 1441 if (atomic_read(&dev_priv->num_fifo_resources) != 0) { 1442 DRM_ERROR("Can't hibernate while 3D resources are active.\n"); 1443 if (dev_priv->enable_fb) 1444 vmw_fifo_resource_inc(dev_priv); 1445 WARN_ON(vmw_request_device_late(dev_priv)); 1446 dev_priv->suspended = false; 1447 return -EBUSY; 1448 } 1449 1450 if (dev_priv->enable_fb) 1451 __vmw_svga_disable(dev_priv); 1452 1453 vmw_release_device_late(dev_priv); 1454 1455 return 0; 1456 } 1457 1458 static int vmw_pm_restore(struct device *kdev) 1459 { 1460 struct pci_dev *pdev = to_pci_dev(kdev); 1461 struct drm_device *dev = pci_get_drvdata(pdev); 1462 struct vmw_private *dev_priv = vmw_priv(dev); 1463 int ret; 1464 1465 vmw_write(dev_priv, SVGA_REG_ID, SVGA_ID_2); 1466 (void) vmw_read(dev_priv, SVGA_REG_ID); 1467 1468 if (dev_priv->enable_fb) 1469 vmw_fifo_resource_inc(dev_priv); 1470 1471 ret = vmw_request_device(dev_priv); 1472 if (ret) 1473 return ret; 1474 1475 if (dev_priv->enable_fb) 1476 __vmw_svga_enable(dev_priv); 1477 1478 dev_priv->suspended = false; 1479 1480 return 0; 1481 } 1482 1483 static const struct dev_pm_ops vmw_pm_ops = { 1484 .freeze = vmw_pm_freeze, 1485 .thaw = vmw_pm_restore, 1486 .restore = vmw_pm_restore, 1487 .suspend = vmw_pm_suspend, 1488 .resume = vmw_pm_resume, 1489 }; 1490 1491 static const struct file_operations vmwgfx_driver_fops = { 1492 .owner = THIS_MODULE, 1493 .open = drm_open, 1494 .release = drm_release, 1495 .unlocked_ioctl = vmw_unlocked_ioctl, 1496 .mmap = vmw_mmap, 1497 .poll = vmw_fops_poll, 1498 .read = vmw_fops_read, 1499 #if defined(CONFIG_COMPAT) 1500 .compat_ioctl = vmw_compat_ioctl, 1501 #endif 1502 .llseek = noop_llseek, 1503 }; 1504 1505 static struct drm_driver driver = { 1506 .driver_features = DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | 1507 DRIVER_MODESET | DRIVER_PRIME | DRIVER_RENDER, 1508 .load = vmw_driver_load, 1509 .unload = vmw_driver_unload, 1510 .lastclose = vmw_lastclose, 1511 .irq_preinstall = vmw_irq_preinstall, 1512 .irq_postinstall = vmw_irq_postinstall, 1513 .irq_uninstall = vmw_irq_uninstall, 1514 .irq_handler = vmw_irq_handler, 1515 .get_vblank_counter = vmw_get_vblank_counter, 1516 .enable_vblank = vmw_enable_vblank, 1517 .disable_vblank = vmw_disable_vblank, 1518 .ioctls = vmw_ioctls, 1519 .num_ioctls = ARRAY_SIZE(vmw_ioctls), 1520 .master_create = vmw_master_create, 1521 .master_destroy = vmw_master_destroy, 1522 .master_set = vmw_master_set, 1523 .master_drop = vmw_master_drop, 1524 .open = vmw_driver_open, 1525 .postclose = vmw_postclose, 1526 .set_busid = drm_pci_set_busid, 1527 1528 .dumb_create = vmw_dumb_create, 1529 .dumb_map_offset = vmw_dumb_map_offset, 1530 .dumb_destroy = vmw_dumb_destroy, 1531 1532 .prime_fd_to_handle = vmw_prime_fd_to_handle, 1533 .prime_handle_to_fd = vmw_prime_handle_to_fd, 1534 1535 .fops = &vmwgfx_driver_fops, 1536 .name = VMWGFX_DRIVER_NAME, 1537 .desc = VMWGFX_DRIVER_DESC, 1538 .date = VMWGFX_DRIVER_DATE, 1539 .major = VMWGFX_DRIVER_MAJOR, 1540 .minor = VMWGFX_DRIVER_MINOR, 1541 .patchlevel = VMWGFX_DRIVER_PATCHLEVEL 1542 }; 1543 1544 static struct pci_driver vmw_pci_driver = { 1545 .name = VMWGFX_DRIVER_NAME, 1546 .id_table = vmw_pci_id_list, 1547 .probe = vmw_probe, 1548 .remove = vmw_remove, 1549 .driver = { 1550 .pm = &vmw_pm_ops 1551 } 1552 }; 1553 1554 static int vmw_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 1555 { 1556 return drm_get_pci_dev(pdev, ent, &driver); 1557 } 1558 1559 static int __init vmwgfx_init(void) 1560 { 1561 int ret; 1562 1563 if (vgacon_text_force()) 1564 return -EINVAL; 1565 1566 ret = drm_pci_init(&driver, &vmw_pci_driver); 1567 if (ret) 1568 DRM_ERROR("Failed initializing DRM.\n"); 1569 return ret; 1570 } 1571 1572 static void __exit vmwgfx_exit(void) 1573 { 1574 drm_pci_exit(&driver, &vmw_pci_driver); 1575 } 1576 1577 module_init(vmwgfx_init); 1578 module_exit(vmwgfx_exit); 1579 1580 MODULE_AUTHOR("VMware Inc. and others"); 1581 MODULE_DESCRIPTION("Standalone drm driver for the VMware SVGA device"); 1582 MODULE_LICENSE("GPL and additional rights"); 1583 MODULE_VERSION(__stringify(VMWGFX_DRIVER_MAJOR) "." 1584 __stringify(VMWGFX_DRIVER_MINOR) "." 1585 __stringify(VMWGFX_DRIVER_PATCHLEVEL) "." 1586 "0"); 1587