drivers/gpu/drm/vmwgfx/vmwgfx_drv.c

   1 /**************************************************************************
   2  *
   3  * Copyright © 2009 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
  28 #include "drmP.h"
  29 #include "vmwgfx_drv.h"
  30 #include "ttm/ttm_placement.h"
  31 #include "ttm/ttm_bo_driver.h"
  32 #include "ttm/ttm_object.h"
  33 #include "ttm/ttm_module.h"
  34
  35 #define VMWGFX_DRIVER_NAME "vmwgfx"
  36 #define VMWGFX_DRIVER_DESC "Linux drm driver for VMware graphics devices"
  37 #define VMWGFX_CHIP_SVGAII 0
  38 #define VMW_FB_RESERVATION 0
  39
  40 /**
  41  * Fully encoded drm commands. Might move to vmw_drm.h
  42  */
  43
  44 #define DRM_IOCTL_VMW_GET_PARAM                                 \
  45         DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_GET_PARAM,          \
  46                  struct drm_vmw_getparam_arg)
  47 #define DRM_IOCTL_VMW_ALLOC_DMABUF                              \
  48         DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_ALLOC_DMABUF,       \
  49                 union drm_vmw_alloc_dmabuf_arg)
  50 #define DRM_IOCTL_VMW_UNREF_DMABUF                              \
  51         DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_DMABUF,        \
  52                 struct drm_vmw_unref_dmabuf_arg)
  53 #define DRM_IOCTL_VMW_CURSOR_BYPASS                             \
  54         DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_CURSOR_BYPASS,       \
  55                  struct drm_vmw_cursor_bypass_arg)
  56
  57 #define DRM_IOCTL_VMW_CONTROL_STREAM                            \
  58         DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_CONTROL_STREAM,      \
  59                  struct drm_vmw_control_stream_arg)
  60 #define DRM_IOCTL_VMW_CLAIM_STREAM                              \
  61         DRM_IOR(DRM_COMMAND_BASE + DRM_VMW_CLAIM_STREAM,        \
  62                  struct drm_vmw_stream_arg)
  63 #define DRM_IOCTL_VMW_UNREF_STREAM                              \
  64         DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_STREAM,        \
  65                  struct drm_vmw_stream_arg)
  66
  67 #define DRM_IOCTL_VMW_CREATE_CONTEXT                            \
  68         DRM_IOR(DRM_COMMAND_BASE + DRM_VMW_CREATE_CONTEXT,      \
  69                 struct drm_vmw_context_arg)
  70 #define DRM_IOCTL_VMW_UNREF_CONTEXT                             \
  71         DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_CONTEXT,       \
  72                 struct drm_vmw_context_arg)
  73 #define DRM_IOCTL_VMW_CREATE_SURFACE                            \
  74         DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_CREATE_SURFACE,     \
  75                  union drm_vmw_surface_create_arg)
  76 #define DRM_IOCTL_VMW_UNREF_SURFACE                             \
  77         DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_SURFACE,       \
  78                  struct drm_vmw_surface_arg)
  79 #define DRM_IOCTL_VMW_REF_SURFACE                               \
  80         DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_REF_SURFACE,        \
  81                  union drm_vmw_surface_reference_arg)
  82 #define DRM_IOCTL_VMW_EXECBUF                                   \
  83         DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_EXECBUF,             \
  84                 struct drm_vmw_execbuf_arg)
  85 #define DRM_IOCTL_VMW_FIFO_DEBUG                                \
  86         DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_FIFO_DEBUG,         \
  87                  struct drm_vmw_fifo_debug_arg)
  88 #define DRM_IOCTL_VMW_FENCE_WAIT                                \
  89         DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_FENCE_WAIT,         \
  90                  struct drm_vmw_fence_wait_arg)
  91
  92
  93 /**
  94  * The core DRM version of this macro doesn't account for
  95  * DRM_COMMAND_BASE.
  96  */
  97
  98 #define VMW_IOCTL_DEF(ioctl, func, flags) \
  99         [DRM_IOCTL_NR(ioctl) - DRM_COMMAND_BASE] = {ioctl, flags, func}
 100
 101 /**
 102  * Ioctl definitions.
 103  */
 104
 105 static struct drm_ioctl_desc vmw_ioctls[] = {
 106         VMW_IOCTL_DEF(DRM_IOCTL_VMW_GET_PARAM, vmw_getparam_ioctl, 0),
 107         VMW_IOCTL_DEF(DRM_IOCTL_VMW_ALLOC_DMABUF, vmw_dmabuf_alloc_ioctl,
 108                       0),
 109         VMW_IOCTL_DEF(DRM_IOCTL_VMW_UNREF_DMABUF, vmw_dmabuf_unref_ioctl,
 110                       0),
 111         VMW_IOCTL_DEF(DRM_IOCTL_VMW_CURSOR_BYPASS,
 112                       vmw_kms_cursor_bypass_ioctl, 0),
 113
 114         VMW_IOCTL_DEF(DRM_IOCTL_VMW_CONTROL_STREAM, vmw_overlay_ioctl,
 115                       0),
 116         VMW_IOCTL_DEF(DRM_IOCTL_VMW_CLAIM_STREAM, vmw_stream_claim_ioctl,
 117                       0),
 118         VMW_IOCTL_DEF(DRM_IOCTL_VMW_UNREF_STREAM, vmw_stream_unref_ioctl,
 119                       0),
 120
 121         VMW_IOCTL_DEF(DRM_IOCTL_VMW_CREATE_CONTEXT, vmw_context_define_ioctl,
 122                       0),
 123         VMW_IOCTL_DEF(DRM_IOCTL_VMW_UNREF_CONTEXT, vmw_context_destroy_ioctl,
 124                       0),
 125         VMW_IOCTL_DEF(DRM_IOCTL_VMW_CREATE_SURFACE, vmw_surface_define_ioctl,
 126                       0),
 127         VMW_IOCTL_DEF(DRM_IOCTL_VMW_UNREF_SURFACE, vmw_surface_destroy_ioctl,
 128                       0),
 129         VMW_IOCTL_DEF(DRM_IOCTL_VMW_REF_SURFACE, vmw_surface_reference_ioctl,
 130                       0),
 131         VMW_IOCTL_DEF(DRM_IOCTL_VMW_EXECBUF, vmw_execbuf_ioctl,
 132                       0),
 133         VMW_IOCTL_DEF(DRM_IOCTL_VMW_FIFO_DEBUG, vmw_fifo_debug_ioctl,
 134                       0),
 135         VMW_IOCTL_DEF(DRM_IOCTL_VMW_FENCE_WAIT, vmw_fence_wait_ioctl,
 136                       0)
 137 };
 138
 139 static struct pci_device_id vmw_pci_id_list[] = {
 140         {0x15ad, 0x0405, PCI_ANY_ID, PCI_ANY_ID, 0, 0, VMWGFX_CHIP_SVGAII},
 141         {0, 0, 0}
 142 };
 143
 144 static char *vmw_devname = "vmwgfx";
 145
 146 static int vmw_probe(struct pci_dev *, const struct pci_device_id *);
 147 static void vmw_master_init(struct vmw_master *);
 148
 149 static void vmw_print_capabilities(uint32_t capabilities)
 150 {
 151         DRM_INFO("Capabilities:\n");
 152         if (capabilities & SVGA_CAP_RECT_COPY)
 153                 DRM_INFO("  Rect copy.\n");
 154         if (capabilities & SVGA_CAP_CURSOR)
 155                 DRM_INFO("  Cursor.\n");
 156         if (capabilities & SVGA_CAP_CURSOR_BYPASS)
 157                 DRM_INFO("  Cursor bypass.\n");
 158         if (capabilities & SVGA_CAP_CURSOR_BYPASS_2)
 159                 DRM_INFO("  Cursor bypass 2.\n");
 160         if (capabilities & SVGA_CAP_8BIT_EMULATION)
 161                 DRM_INFO("  8bit emulation.\n");
 162         if (capabilities & SVGA_CAP_ALPHA_CURSOR)
 163                 DRM_INFO("  Alpha cursor.\n");
 164         if (capabilities & SVGA_CAP_3D)
 165                 DRM_INFO("  3D.\n");
 166         if (capabilities & SVGA_CAP_EXTENDED_FIFO)
 167                 DRM_INFO("  Extended Fifo.\n");
 168         if (capabilities & SVGA_CAP_MULTIMON)
 169                 DRM_INFO("  Multimon.\n");
 170         if (capabilities & SVGA_CAP_PITCHLOCK)
 171                 DRM_INFO("  Pitchlock.\n");
 172         if (capabilities & SVGA_CAP_IRQMASK)
 173                 DRM_INFO("  Irq mask.\n");
 174         if (capabilities & SVGA_CAP_DISPLAY_TOPOLOGY)
 175                 DRM_INFO("  Display Topology.\n");
 176         if (capabilities & SVGA_CAP_GMR)
 177                 DRM_INFO("  GMR.\n");
 178         if (capabilities & SVGA_CAP_TRACES)
 179                 DRM_INFO("  Traces.\n");
 180 }
 181
 182 static int vmw_request_device(struct vmw_private *dev_priv)
 183 {
 184         int ret;
 185
 186         vmw_kms_save_vga(dev_priv);
 187
 188         ret = vmw_fifo_init(dev_priv, &dev_priv->fifo);
 189         if (unlikely(ret != 0)) {
 190                 DRM_ERROR("Unable to initialize FIFO.\n");
 191                 return ret;
 192         }
 193
 194         return 0;
 195 }
 196
 197 static void vmw_release_device(struct vmw_private *dev_priv)
 198 {
 199         vmw_fifo_release(dev_priv, &dev_priv->fifo);
 200         vmw_kms_restore_vga(dev_priv);
 201 }
 202
 203
 204 static int vmw_driver_load(struct drm_device *dev, unsigned long chipset)
 205 {
 206         struct vmw_private *dev_priv;
 207         int ret;
 208
 209         dev_priv = kzalloc(sizeof(*dev_priv), GFP_KERNEL);
 210         if (unlikely(dev_priv == NULL)) {
 211                 DRM_ERROR("Failed allocating a device private struct.\n");
 212                 return -ENOMEM;
 213         }
 214         memset(dev_priv, 0, sizeof(*dev_priv));
 215
 216         dev_priv->dev = dev;
 217         dev_priv->vmw_chipset = chipset;
 218         mutex_init(&dev_priv->hw_mutex);
 219         mutex_init(&dev_priv->cmdbuf_mutex);
 220         rwlock_init(&dev_priv->resource_lock);
 221         idr_init(&dev_priv->context_idr);
 222         idr_init(&dev_priv->surface_idr);
 223         idr_init(&dev_priv->stream_idr);
 224         ida_init(&dev_priv->gmr_ida);
 225         mutex_init(&dev_priv->init_mutex);
 226         init_waitqueue_head(&dev_priv->fence_queue);
 227         init_waitqueue_head(&dev_priv->fifo_queue);
 228         atomic_set(&dev_priv->fence_queue_waiters, 0);
 229         atomic_set(&dev_priv->fifo_queue_waiters, 0);
 230         INIT_LIST_HEAD(&dev_priv->gmr_lru);
 231
 232         dev_priv->io_start = pci_resource_start(dev->pdev, 0);
 233         dev_priv->vram_start = pci_resource_start(dev->pdev, 1);
 234         dev_priv->mmio_start = pci_resource_start(dev->pdev, 2);
 235
 236         mutex_lock(&dev_priv->hw_mutex);
 237         dev_priv->capabilities = vmw_read(dev_priv, SVGA_REG_CAPABILITIES);
 238
 239         if (dev_priv->capabilities & SVGA_CAP_GMR) {
 240                 dev_priv->max_gmr_descriptors =
 241                         vmw_read(dev_priv,
 242                                  SVGA_REG_GMR_MAX_DESCRIPTOR_LENGTH);
 243                 dev_priv->max_gmr_ids =
 244                         vmw_read(dev_priv, SVGA_REG_GMR_MAX_IDS);
 245         }
 246
 247         dev_priv->vram_size = vmw_read(dev_priv, SVGA_REG_VRAM_SIZE);
 248         dev_priv->mmio_size = vmw_read(dev_priv, SVGA_REG_MEM_SIZE);
 249         dev_priv->fb_max_width = vmw_read(dev_priv, SVGA_REG_MAX_WIDTH);
 250         dev_priv->fb_max_height = vmw_read(dev_priv, SVGA_REG_MAX_HEIGHT);
 251
 252         mutex_unlock(&dev_priv->hw_mutex);
 253
 254         vmw_print_capabilities(dev_priv->capabilities);
 255
 256         if (dev_priv->capabilities & SVGA_CAP_GMR) {
 257                 DRM_INFO("Max GMR ids is %u\n",
 258                          (unsigned)dev_priv->max_gmr_ids);
 259                 DRM_INFO("Max GMR descriptors is %u\n",
 260                          (unsigned)dev_priv->max_gmr_descriptors);
 261         }
 262         DRM_INFO("VRAM at 0x%08x size is %u kiB\n",
 263                  dev_priv->vram_start, dev_priv->vram_size / 1024);
 264         DRM_INFO("MMIO at 0x%08x size is %u kiB\n",
 265                  dev_priv->mmio_start, dev_priv->mmio_size / 1024);
 266
 267         ret = vmw_ttm_global_init(dev_priv);
 268         if (unlikely(ret != 0))
 269                 goto out_err0;
 270
 271
 272         vmw_master_init(&dev_priv->fbdev_master);
 273         ttm_lock_set_kill(&dev_priv->fbdev_master.lock, false, SIGTERM);
 274         dev_priv->active_master = &dev_priv->fbdev_master;
 275
 276
 277         ret = ttm_bo_device_init(&dev_priv->bdev,
 278                                  dev_priv->bo_global_ref.ref.object,
 279                                  &vmw_bo_driver, VMWGFX_FILE_PAGE_OFFSET,
 280                                  false);
 281         if (unlikely(ret != 0)) {
 282                 DRM_ERROR("Failed initializing TTM buffer object driver.\n");
 283                 goto out_err1;
 284         }
 285
 286         ret = ttm_bo_init_mm(&dev_priv->bdev, TTM_PL_VRAM,
 287                              (dev_priv->vram_size >> PAGE_SHIFT));
 288         if (unlikely(ret != 0)) {
 289                 DRM_ERROR("Failed initializing memory manager for VRAM.\n");
 290                 goto out_err2;
 291         }
 292
 293         dev_priv->mmio_mtrr = drm_mtrr_add(dev_priv->mmio_start,
 294                                            dev_priv->mmio_size, DRM_MTRR_WC);
 295
 296         dev_priv->mmio_virt = ioremap_wc(dev_priv->mmio_start,
 297                                          dev_priv->mmio_size);
 298
 299         if (unlikely(dev_priv->mmio_virt == NULL)) {
 300                 ret = -ENOMEM;
 301                 DRM_ERROR("Failed mapping MMIO.\n");
 302                 goto out_err3;
 303         }
 304
 305         dev_priv->tdev = ttm_object_device_init
 306             (dev_priv->mem_global_ref.object, 12);
 307
 308         if (unlikely(dev_priv->tdev == NULL)) {
 309                 DRM_ERROR("Unable to initialize TTM object management.\n");
 310                 ret = -ENOMEM;
 311                 goto out_err4;
 312         }
 313
 314         dev->dev_private = dev_priv;
 315
 316         if (!dev->devname)
 317                 dev->devname = vmw_devname;
 318
 319         if (dev_priv->capabilities & SVGA_CAP_IRQMASK) {
 320                 ret = drm_irq_install(dev);
 321                 if (unlikely(ret != 0)) {
 322                         DRM_ERROR("Failed installing irq: %d\n", ret);
 323                         goto out_no_irq;
 324                 }
 325         }
 326
 327         ret = pci_request_regions(dev->pdev, "vmwgfx probe");
 328         dev_priv->stealth = (ret != 0);
 329         if (dev_priv->stealth) {
 330                 /**
 331                  * Request at least the mmio PCI resource.
 332                  */
 333
 334                 DRM_INFO("It appears like vesafb is loaded. "
 335                          "Ignore above error if any. Entering stealth mode.\n");
 336                 ret = pci_request_region(dev->pdev, 2, "vmwgfx stealth probe");
 337                 if (unlikely(ret != 0)) {
 338                         DRM_ERROR("Failed reserving the SVGA MMIO resource.\n");
 339                         goto out_no_device;
 340                 }
 341                 vmw_kms_init(dev_priv);
 342                 vmw_overlay_init(dev_priv);
 343         } else {
 344                 ret = vmw_request_device(dev_priv);
 345                 if (unlikely(ret != 0))
 346                         goto out_no_device;
 347                 vmw_kms_init(dev_priv);
 348                 vmw_overlay_init(dev_priv);
 349                 vmw_fb_init(dev_priv);
 350         }
 351
 352         return 0;
 353
 354 out_no_device:
 355         if (dev_priv->capabilities & SVGA_CAP_IRQMASK)
 356                 drm_irq_uninstall(dev_priv->dev);
 357         if (dev->devname == vmw_devname)
 358                 dev->devname = NULL;
 359 out_no_irq:
 360         ttm_object_device_release(&dev_priv->tdev);
 361 out_err4:
 362         iounmap(dev_priv->mmio_virt);
 363 out_err3:
 364         drm_mtrr_del(dev_priv->mmio_mtrr, dev_priv->mmio_start,
 365                      dev_priv->mmio_size, DRM_MTRR_WC);
 366         (void)ttm_bo_clean_mm(&dev_priv->bdev, TTM_PL_VRAM);
 367 out_err2:
 368         (void)ttm_bo_device_release(&dev_priv->bdev);
 369 out_err1:
 370         vmw_ttm_global_release(dev_priv);
 371 out_err0:
 372         ida_destroy(&dev_priv->gmr_ida);
 373         idr_destroy(&dev_priv->surface_idr);
 374         idr_destroy(&dev_priv->context_idr);
 375         idr_destroy(&dev_priv->stream_idr);
 376         kfree(dev_priv);
 377         return ret;
 378 }
 379
 380 static int vmw_driver_unload(struct drm_device *dev)
 381 {
 382         struct vmw_private *dev_priv = vmw_priv(dev);
 383
 384         DRM_INFO(VMWGFX_DRIVER_NAME " unload.\n");
 385
 386         if (!dev_priv->stealth) {
 387                 vmw_fb_close(dev_priv);
 388                 vmw_kms_close(dev_priv);
 389                 vmw_overlay_close(dev_priv);
 390                 vmw_release_device(dev_priv);
 391                 pci_release_regions(dev->pdev);
 392         } else {
 393                 vmw_kms_close(dev_priv);
 394                 vmw_overlay_close(dev_priv);
 395                 pci_release_region(dev->pdev, 2);
 396         }
 397         if (dev_priv->capabilities & SVGA_CAP_IRQMASK)
 398                 drm_irq_uninstall(dev_priv->dev);
 399         if (dev->devname == vmw_devname)
 400                 dev->devname = NULL;
 401         ttm_object_device_release(&dev_priv->tdev);
 402         iounmap(dev_priv->mmio_virt);
 403         drm_mtrr_del(dev_priv->mmio_mtrr, dev_priv->mmio_start,
 404                      dev_priv->mmio_size, DRM_MTRR_WC);
 405         (void)ttm_bo_clean_mm(&dev_priv->bdev, TTM_PL_VRAM);
 406         (void)ttm_bo_device_release(&dev_priv->bdev);
 407         vmw_ttm_global_release(dev_priv);
 408         ida_destroy(&dev_priv->gmr_ida);
 409         idr_destroy(&dev_priv->surface_idr);
 410         idr_destroy(&dev_priv->context_idr);
 411         idr_destroy(&dev_priv->stream_idr);
 412
 413         kfree(dev_priv);
 414
 415         return 0;
 416 }
 417
 418 static void vmw_postclose(struct drm_device *dev,
 419                          struct drm_file *file_priv)
 420 {
 421         struct vmw_fpriv *vmw_fp;
 422
 423         vmw_fp = vmw_fpriv(file_priv);
 424         ttm_object_file_release(&vmw_fp->tfile);
 425         if (vmw_fp->locked_master)
 426                 drm_master_put(&vmw_fp->locked_master);
 427         kfree(vmw_fp);
 428 }
 429
 430 static int vmw_driver_open(struct drm_device *dev, struct drm_file *file_priv)
 431 {
 432         struct vmw_private *dev_priv = vmw_priv(dev);
 433         struct vmw_fpriv *vmw_fp;
 434         int ret = -ENOMEM;
 435
 436         vmw_fp = kzalloc(sizeof(*vmw_fp), GFP_KERNEL);
 437         if (unlikely(vmw_fp == NULL))
 438                 return ret;
 439
 440         vmw_fp->tfile = ttm_object_file_init(dev_priv->tdev, 10);
 441         if (unlikely(vmw_fp->tfile == NULL))
 442                 goto out_no_tfile;
 443
 444         file_priv->driver_priv = vmw_fp;
 445
 446         if (unlikely(dev_priv->bdev.dev_mapping == NULL))
 447                 dev_priv->bdev.dev_mapping =
 448                         file_priv->filp->f_path.dentry->d_inode->i_mapping;
 449
 450         return 0;
 451
 452 out_no_tfile:
 453         kfree(vmw_fp);
 454         return ret;
 455 }
 456
 457 static long vmw_unlocked_ioctl(struct file *filp, unsigned int cmd,
 458                                unsigned long arg)
 459 {
 460         struct drm_file *file_priv = filp->private_data;
 461         struct drm_device *dev = file_priv->minor->dev;
 462         unsigned int nr = DRM_IOCTL_NR(cmd);
 463         long ret;
 464
 465         /*
 466          * The driver private ioctls and TTM ioctls should be
 467          * thread-safe.
 468          */
 469
 470         if ((nr >= DRM_COMMAND_BASE) && (nr < DRM_COMMAND_END)
 471             && (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls)) {
 472                 struct drm_ioctl_desc *ioctl =
 473                     &vmw_ioctls[nr - DRM_COMMAND_BASE];
 474
 475                 if (unlikely(ioctl->cmd != cmd)) {
 476                         DRM_ERROR("Invalid command format, ioctl %d\n",
 477                                   nr - DRM_COMMAND_BASE);
 478                         return -EINVAL;
 479                 }
 480                 return drm_ioctl(filp->f_path.dentry->d_inode,
 481                                  filp, cmd, arg);
 482         }
 483
 484         /*
 485          * Not all old drm ioctls are thread-safe.
 486          */
 487
 488         lock_kernel();
 489         ret = drm_ioctl(filp->f_path.dentry->d_inode, filp, cmd, arg);
 490         unlock_kernel();
 491         return ret;
 492 }
 493
 494 static int vmw_firstopen(struct drm_device *dev)
 495 {
 496         struct vmw_private *dev_priv = vmw_priv(dev);
 497         dev_priv->is_opened = true;
 498
 499         return 0;
 500 }
 501
 502 static void vmw_lastclose(struct drm_device *dev)
 503 {
 504         struct vmw_private *dev_priv = vmw_priv(dev);
 505         struct drm_crtc *crtc;
 506         struct drm_mode_set set;
 507         int ret;
 508
 509         /**
 510          * Do nothing on the lastclose call from drm_unload.
 511          */
 512
 513         if (!dev_priv->is_opened)
 514                 return;
 515
 516         dev_priv->is_opened = false;
 517         set.x = 0;
 518         set.y = 0;
 519         set.fb = NULL;
 520         set.mode = NULL;
 521         set.connectors = NULL;
 522         set.num_connectors = 0;
 523
 524         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 525                 set.crtc = crtc;
 526                 ret = crtc->funcs->set_config(&set);
 527                 WARN_ON(ret != 0);
 528         }
 529
 530 }
 531
 532 static void vmw_master_init(struct vmw_master *vmaster)
 533 {
 534         ttm_lock_init(&vmaster->lock);
 535 }
 536
 537 static int vmw_master_create(struct drm_device *dev,
 538                              struct drm_master *master)
 539 {
 540         struct vmw_master *vmaster;
 541
 542         DRM_INFO("Master create.\n");
 543         vmaster = kzalloc(sizeof(*vmaster), GFP_KERNEL);
 544         if (unlikely(vmaster == NULL))
 545                 return -ENOMEM;
 546
 547         ttm_lock_init(&vmaster->lock);
 548         ttm_lock_set_kill(&vmaster->lock, true, SIGTERM);
 549         master->driver_priv = vmaster;
 550
 551         return 0;
 552 }
 553
 554 static void vmw_master_destroy(struct drm_device *dev,
 555                                struct drm_master *master)
 556 {
 557         struct vmw_master *vmaster = vmw_master(master);
 558
 559         DRM_INFO("Master destroy.\n");
 560         master->driver_priv = NULL;
 561         kfree(vmaster);
 562 }
 563
 564
 565 static int vmw_master_set(struct drm_device *dev,
 566                           struct drm_file *file_priv,
 567                           bool from_open)
 568 {
 569         struct vmw_private *dev_priv = vmw_priv(dev);
 570         struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
 571         struct vmw_master *active = dev_priv->active_master;
 572         struct vmw_master *vmaster = vmw_master(file_priv->master);
 573         int ret = 0;
 574
 575         DRM_INFO("Master set.\n");
 576         if (dev_priv->stealth) {
 577                 ret = vmw_request_device(dev_priv);
 578                 if (unlikely(ret != 0))
 579                         return ret;
 580         }
 581
 582         if (active) {
 583                 BUG_ON(active != &dev_priv->fbdev_master);
 584                 ret = ttm_vt_lock(&active->lock, false, vmw_fp->tfile);
 585                 if (unlikely(ret != 0))
 586                         goto out_no_active_lock;
 587
 588                 ttm_lock_set_kill(&active->lock, true, SIGTERM);
 589                 ret = ttm_bo_evict_mm(&dev_priv->bdev, TTM_PL_VRAM);
 590                 if (unlikely(ret != 0)) {
 591                         DRM_ERROR("Unable to clean VRAM on "
 592                                   "master drop.\n");
 593                 }
 594
 595                 dev_priv->active_master = NULL;
 596         }
 597
 598         ttm_lock_set_kill(&vmaster->lock, false, SIGTERM);
 599         if (!from_open) {
 600                 ttm_vt_unlock(&vmaster->lock);
 601                 BUG_ON(vmw_fp->locked_master != file_priv->master);
 602                 drm_master_put(&vmw_fp->locked_master);
 603         }
 604
 605         dev_priv->active_master = vmaster;
 606
 607         return 0;
 608
 609 out_no_active_lock:
 610         vmw_release_device(dev_priv);
 611         return ret;
 612 }
 613
 614 static void vmw_master_drop(struct drm_device *dev,
 615                             struct drm_file *file_priv,
 616                             bool from_release)
 617 {
 618         struct vmw_private *dev_priv = vmw_priv(dev);
 619         struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
 620         struct vmw_master *vmaster = vmw_master(file_priv->master);
 621         int ret;
 622
 623         DRM_INFO("Master drop.\n");
 624
 625         /**
 626          * Make sure the master doesn't disappear while we have
 627          * it locked.
 628          */
 629
 630         vmw_fp->locked_master = drm_master_get(file_priv->master);
 631         ret = ttm_vt_lock(&vmaster->lock, false, vmw_fp->tfile);
 632
 633         if (unlikely((ret != 0))) {
 634                 DRM_ERROR("Unable to lock TTM at VT switch.\n");
 635                 drm_master_put(&vmw_fp->locked_master);
 636         }
 637
 638         ttm_lock_set_kill(&vmaster->lock, true, SIGTERM);
 639
 640         if (dev_priv->stealth) {
 641                 ret = ttm_bo_evict_mm(&dev_priv->bdev, TTM_PL_VRAM);
 642                 if (unlikely(ret != 0))
 643                         DRM_ERROR("Unable to clean VRAM on master drop.\n");
 644                 vmw_release_device(dev_priv);
 645         }
 646         dev_priv->active_master = &dev_priv->fbdev_master;
 647         ttm_lock_set_kill(&dev_priv->fbdev_master.lock, false, SIGTERM);
 648         ttm_vt_unlock(&dev_priv->fbdev_master.lock);
 649
 650         if (!dev_priv->stealth)
 651                 vmw_fb_on(dev_priv);
 652 }
 653
 654
 655 static void vmw_remove(struct pci_dev *pdev)
 656 {
 657         struct drm_device *dev = pci_get_drvdata(pdev);
 658
 659         drm_put_dev(dev);
 660 }
 661
 662 static struct drm_driver driver = {
 663         .driver_features = DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED |
 664         DRIVER_MODESET,
 665         .load = vmw_driver_load,
 666         .unload = vmw_driver_unload,
 667         .firstopen = vmw_firstopen,
 668         .lastclose = vmw_lastclose,
 669         .irq_preinstall = vmw_irq_preinstall,
 670         .irq_postinstall = vmw_irq_postinstall,
 671         .irq_uninstall = vmw_irq_uninstall,
 672         .irq_handler = vmw_irq_handler,
 673         .reclaim_buffers_locked = NULL,
 674         .get_map_ofs = drm_core_get_map_ofs,
 675         .get_reg_ofs = drm_core_get_reg_ofs,
 676         .ioctls = vmw_ioctls,
 677         .num_ioctls = DRM_ARRAY_SIZE(vmw_ioctls),
 678         .dma_quiescent = NULL,  /*vmw_dma_quiescent, */
 679         .master_create = vmw_master_create,
 680         .master_destroy = vmw_master_destroy,
 681         .master_set = vmw_master_set,
 682         .master_drop = vmw_master_drop,
 683         .open = vmw_driver_open,
 684         .postclose = vmw_postclose,
 685         .fops = {
 686                  .owner = THIS_MODULE,
 687                  .open = drm_open,
 688                  .release = drm_release,
 689                  .unlocked_ioctl = vmw_unlocked_ioctl,
 690                  .mmap = vmw_mmap,
 691                  .poll = drm_poll,
 692                  .fasync = drm_fasync,
 693 #if defined(CONFIG_COMPAT)
 694                  .compat_ioctl = drm_compat_ioctl,
 695 #endif
 696                  },
 697         .pci_driver = {
 698                        .name = VMWGFX_DRIVER_NAME,
 699                        .id_table = vmw_pci_id_list,
 700                        .probe = vmw_probe,
 701                        .remove = vmw_remove
 702                        },
 703         .name = VMWGFX_DRIVER_NAME,
 704         .desc = VMWGFX_DRIVER_DESC,
 705         .date = VMWGFX_DRIVER_DATE,
 706         .major = VMWGFX_DRIVER_MAJOR,
 707         .minor = VMWGFX_DRIVER_MINOR,
 708         .patchlevel = VMWGFX_DRIVER_PATCHLEVEL
 709 };
 710
 711 static int vmw_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 712 {
 713         return drm_get_dev(pdev, ent, &driver);
 714 }
 715
 716 static int __init vmwgfx_init(void)
 717 {
 718         int ret;
 719         ret = drm_init(&driver);
 720         if (ret)
 721                 DRM_ERROR("Failed initializing DRM.\n");
 722         return ret;
 723 }
 724
 725 static void __exit vmwgfx_exit(void)
 726 {
 727         drm_exit(&driver);
 728 }
 729
 730 module_init(vmwgfx_init);
 731 module_exit(vmwgfx_exit);
 732
 733 MODULE_AUTHOR("VMware Inc. and others");
 734 MODULE_DESCRIPTION("Standalone drm driver for the VMware SVGA device");
 735 MODULE_LICENSE("GPL and additional rights");