kernel/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c

   1 /**************************************************************************
   2  *
   3  * Copyright © 2009-2015 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
  48 /**
  49  * Fully encoded drm commands. Might move to vmw_drm.h
  50  */
  51
  52 #define DRM_IOCTL_VMW_GET_PARAM                                 \
  53         DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_GET_PARAM,          \
  54                  struct drm_vmw_getparam_arg)
  55 #define DRM_IOCTL_VMW_ALLOC_DMABUF                              \
  56         DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_ALLOC_DMABUF,       \
  57                 union drm_vmw_alloc_dmabuf_arg)
  58 #define DRM_IOCTL_VMW_UNREF_DMABUF                              \
  59         DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_DMABUF,        \
  60                 struct drm_vmw_unref_dmabuf_arg)
  61 #define DRM_IOCTL_VMW_CURSOR_BYPASS                             \
  62         DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_CURSOR_BYPASS,       \
  63                  struct drm_vmw_cursor_bypass_arg)
  64
  65 #define DRM_IOCTL_VMW_CONTROL_STREAM                            \
  66         DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_CONTROL_STREAM,      \
  67                  struct drm_vmw_control_stream_arg)
  68 #define DRM_IOCTL_VMW_CLAIM_STREAM                              \
  69         DRM_IOR(DRM_COMMAND_BASE + DRM_VMW_CLAIM_STREAM,        \
  70                  struct drm_vmw_stream_arg)
  71 #define DRM_IOCTL_VMW_UNREF_STREAM                              \
  72         DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_STREAM,        \
  73                  struct drm_vmw_stream_arg)
  74
  75 #define DRM_IOCTL_VMW_CREATE_CONTEXT                            \
  76         DRM_IOR(DRM_COMMAND_BASE + DRM_VMW_CREATE_CONTEXT,      \
  77                 struct drm_vmw_context_arg)
  78 #define DRM_IOCTL_VMW_UNREF_CONTEXT                             \
  79         DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_CONTEXT,       \
  80                 struct drm_vmw_context_arg)
  81 #define DRM_IOCTL_VMW_CREATE_SURFACE                            \
  82         DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_CREATE_SURFACE,     \
  83                  union drm_vmw_surface_create_arg)
  84 #define DRM_IOCTL_VMW_UNREF_SURFACE                             \
  85         DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_SURFACE,       \
  86                  struct drm_vmw_surface_arg)
  87 #define DRM_IOCTL_VMW_REF_SURFACE                               \
  88         DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_REF_SURFACE,        \
  89                  union drm_vmw_surface_reference_arg)
  90 #define DRM_IOCTL_VMW_EXECBUF                                   \
  91         DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_EXECBUF,             \
  92                 struct drm_vmw_execbuf_arg)
  93 #define DRM_IOCTL_VMW_GET_3D_CAP                                \
  94         DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_GET_3D_CAP,          \
  95                  struct drm_vmw_get_3d_cap_arg)
  96 #define DRM_IOCTL_VMW_FENCE_WAIT                                \
  97         DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_FENCE_WAIT,         \
  98                  struct drm_vmw_fence_wait_arg)
  99 #define DRM_IOCTL_VMW_FENCE_SIGNALED                            \
 100         DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_FENCE_SIGNALED,     \
 101                  struct drm_vmw_fence_signaled_arg)
 102 #define DRM_IOCTL_VMW_FENCE_UNREF                               \
 103         DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_FENCE_UNREF,         \
 104                  struct drm_vmw_fence_arg)
 105 #define DRM_IOCTL_VMW_FENCE_EVENT                               \
 106         DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_FENCE_EVENT,         \
 107                  struct drm_vmw_fence_event_arg)
 108 #define DRM_IOCTL_VMW_PRESENT                                   \
 109         DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_PRESENT,             \
 110                  struct drm_vmw_present_arg)
 111 #define DRM_IOCTL_VMW_PRESENT_READBACK                          \
 112         DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_PRESENT_READBACK,    \
 113                  struct drm_vmw_present_readback_arg)
 114 #define DRM_IOCTL_VMW_UPDATE_LAYOUT                             \
 115         DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UPDATE_LAYOUT,       \
 116                  struct drm_vmw_update_layout_arg)
 117 #define DRM_IOCTL_VMW_CREATE_SHADER                             \
 118         DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_CREATE_SHADER,      \
 119                  struct drm_vmw_shader_create_arg)
 120 #define DRM_IOCTL_VMW_UNREF_SHADER                              \
 121         DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_SHADER,        \
 122                  struct drm_vmw_shader_arg)
 123 #define DRM_IOCTL_VMW_GB_SURFACE_CREATE                         \
 124         DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_GB_SURFACE_CREATE,  \
 125                  union drm_vmw_gb_surface_create_arg)
 126 #define DRM_IOCTL_VMW_GB_SURFACE_REF                            \
 127         DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_GB_SURFACE_REF,     \
 128                  union drm_vmw_gb_surface_reference_arg)
 129 #define DRM_IOCTL_VMW_SYNCCPU                                   \
 130         DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_SYNCCPU,             \
 131                  struct drm_vmw_synccpu_arg)
 132 #define DRM_IOCTL_VMW_CREATE_EXTENDED_CONTEXT                   \
 133         DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_CREATE_EXTENDED_CONTEXT,    \
 134                 struct drm_vmw_context_arg)
 135
 136 /**
 137  * The core DRM version of this macro doesn't account for
 138  * DRM_COMMAND_BASE.
 139  */
 140
 141 #define VMW_IOCTL_DEF(ioctl, func, flags) \
 142   [DRM_IOCTL_NR(DRM_IOCTL_##ioctl) - DRM_COMMAND_BASE] = {DRM_IOCTL_##ioctl, flags, func}
 143
 144 /**
 145  * Ioctl definitions.
 146  */
 147
 148 static const struct drm_ioctl_desc vmw_ioctls[] = {
 149         VMW_IOCTL_DEF(VMW_GET_PARAM, vmw_getparam_ioctl,
 150                       DRM_AUTH | DRM_RENDER_ALLOW),
 151         VMW_IOCTL_DEF(VMW_ALLOC_DMABUF, vmw_dmabuf_alloc_ioctl,
 152                       DRM_AUTH | DRM_RENDER_ALLOW),
 153         VMW_IOCTL_DEF(VMW_UNREF_DMABUF, vmw_dmabuf_unref_ioctl,
 154                       DRM_RENDER_ALLOW),
 155         VMW_IOCTL_DEF(VMW_CURSOR_BYPASS,
 156                       vmw_kms_cursor_bypass_ioctl,
 157                       DRM_MASTER | DRM_CONTROL_ALLOW),
 158
 159         VMW_IOCTL_DEF(VMW_CONTROL_STREAM, vmw_overlay_ioctl,
 160                       DRM_MASTER | DRM_CONTROL_ALLOW),
 161         VMW_IOCTL_DEF(VMW_CLAIM_STREAM, vmw_stream_claim_ioctl,
 162                       DRM_MASTER | DRM_CONTROL_ALLOW),
 163         VMW_IOCTL_DEF(VMW_UNREF_STREAM, vmw_stream_unref_ioctl,
 164                       DRM_MASTER | DRM_CONTROL_ALLOW),
 165
 166         VMW_IOCTL_DEF(VMW_CREATE_CONTEXT, vmw_context_define_ioctl,
 167                       DRM_AUTH | DRM_RENDER_ALLOW),
 168         VMW_IOCTL_DEF(VMW_UNREF_CONTEXT, vmw_context_destroy_ioctl,
 169                       DRM_RENDER_ALLOW),
 170         VMW_IOCTL_DEF(VMW_CREATE_SURFACE, vmw_surface_define_ioctl,
 171                       DRM_AUTH | DRM_RENDER_ALLOW),
 172         VMW_IOCTL_DEF(VMW_UNREF_SURFACE, vmw_surface_destroy_ioctl,
 173                       DRM_RENDER_ALLOW),
 174         VMW_IOCTL_DEF(VMW_REF_SURFACE, vmw_surface_reference_ioctl,
 175                       DRM_AUTH | DRM_RENDER_ALLOW),
 176         VMW_IOCTL_DEF(VMW_EXECBUF, NULL, DRM_AUTH |
 177                       DRM_RENDER_ALLOW),
 178         VMW_IOCTL_DEF(VMW_FENCE_WAIT, vmw_fence_obj_wait_ioctl,
 179                       DRM_RENDER_ALLOW),
 180         VMW_IOCTL_DEF(VMW_FENCE_SIGNALED,
 181                       vmw_fence_obj_signaled_ioctl,
 182                       DRM_RENDER_ALLOW),
 183         VMW_IOCTL_DEF(VMW_FENCE_UNREF, vmw_fence_obj_unref_ioctl,
 184                       DRM_RENDER_ALLOW),
 185         VMW_IOCTL_DEF(VMW_FENCE_EVENT, vmw_fence_event_ioctl,
 186                       DRM_AUTH | DRM_RENDER_ALLOW),
 187         VMW_IOCTL_DEF(VMW_GET_3D_CAP, vmw_get_cap_3d_ioctl,
 188                       DRM_AUTH | DRM_RENDER_ALLOW),
 189
 190         /* these allow direct access to the framebuffers mark as master only */
 191         VMW_IOCTL_DEF(VMW_PRESENT, vmw_present_ioctl,
 192                       DRM_MASTER | DRM_AUTH),
 193         VMW_IOCTL_DEF(VMW_PRESENT_READBACK,
 194                       vmw_present_readback_ioctl,
 195                       DRM_MASTER | DRM_AUTH),
 196         VMW_IOCTL_DEF(VMW_UPDATE_LAYOUT,
 197                       vmw_kms_update_layout_ioctl,
 198                       DRM_MASTER),
 199         VMW_IOCTL_DEF(VMW_CREATE_SHADER,
 200                       vmw_shader_define_ioctl,
 201                       DRM_AUTH | DRM_RENDER_ALLOW),
 202         VMW_IOCTL_DEF(VMW_UNREF_SHADER,
 203                       vmw_shader_destroy_ioctl,
 204                       DRM_RENDER_ALLOW),
 205         VMW_IOCTL_DEF(VMW_GB_SURFACE_CREATE,
 206                       vmw_gb_surface_define_ioctl,
 207                       DRM_AUTH | DRM_RENDER_ALLOW),
 208         VMW_IOCTL_DEF(VMW_GB_SURFACE_REF,
 209                       vmw_gb_surface_reference_ioctl,
 210                       DRM_AUTH | DRM_RENDER_ALLOW),
 211         VMW_IOCTL_DEF(VMW_SYNCCPU,
 212                       vmw_user_dmabuf_synccpu_ioctl,
 213                       DRM_RENDER_ALLOW),
 214         VMW_IOCTL_DEF(VMW_CREATE_EXTENDED_CONTEXT,
 215                       vmw_extended_context_define_ioctl,
 216                       DRM_AUTH | DRM_RENDER_ALLOW),
 217 };
 218
 219 static struct pci_device_id vmw_pci_id_list[] = {
 220         {0x15ad, 0x0405, PCI_ANY_ID, PCI_ANY_ID, 0, 0, VMWGFX_CHIP_SVGAII},
 221         {0, 0, 0}
 222 };
 223 MODULE_DEVICE_TABLE(pci, vmw_pci_id_list);
 224
 225 static int enable_fbdev = IS_ENABLED(CONFIG_DRM_VMWGFX_FBCON);
 226 static int vmw_force_iommu;
 227 static int vmw_restrict_iommu;
 228 static int vmw_force_coherent;
 229 static int vmw_restrict_dma_mask;
 230 static int vmw_assume_16bpp;
 231
 232 static int vmw_probe(struct pci_dev *, const struct pci_device_id *);
 233 static void vmw_master_init(struct vmw_master *);
 234 static int vmwgfx_pm_notifier(struct notifier_block *nb, unsigned long val,
 235                               void *ptr);
 236
 237 MODULE_PARM_DESC(enable_fbdev, "Enable vmwgfx fbdev");
 238 module_param_named(enable_fbdev, enable_fbdev, int, 0600);
 239 MODULE_PARM_DESC(force_dma_api, "Force using the DMA API for TTM pages");
 240 module_param_named(force_dma_api, vmw_force_iommu, int, 0600);
 241 MODULE_PARM_DESC(restrict_iommu, "Try to limit IOMMU usage for TTM pages");
 242 module_param_named(restrict_iommu, vmw_restrict_iommu, int, 0600);
 243 MODULE_PARM_DESC(force_coherent, "Force coherent TTM pages");
 244 module_param_named(force_coherent, vmw_force_coherent, int, 0600);
 245 MODULE_PARM_DESC(restrict_dma_mask, "Restrict DMA mask to 44 bits with IOMMU");
 246 module_param_named(restrict_dma_mask, vmw_restrict_dma_mask, int, 0600);
 247 MODULE_PARM_DESC(assume_16bpp, "Assume 16-bpp when filtering modes");
 248 module_param_named(assume_16bpp, vmw_assume_16bpp, int, 0600);
 249
 250
 251 static void vmw_print_capabilities(uint32_t capabilities)
 252 {
 253         DRM_INFO("Capabilities:\n");
 254         if (capabilities & SVGA_CAP_RECT_COPY)
 255                 DRM_INFO("  Rect copy.\n");
 256         if (capabilities & SVGA_CAP_CURSOR)
 257                 DRM_INFO("  Cursor.\n");
 258         if (capabilities & SVGA_CAP_CURSOR_BYPASS)
 259                 DRM_INFO("  Cursor bypass.\n");
 260         if (capabilities & SVGA_CAP_CURSOR_BYPASS_2)
 261                 DRM_INFO("  Cursor bypass 2.\n");
 262         if (capabilities & SVGA_CAP_8BIT_EMULATION)
 263                 DRM_INFO("  8bit emulation.\n");
 264         if (capabilities & SVGA_CAP_ALPHA_CURSOR)
 265                 DRM_INFO("  Alpha cursor.\n");
 266         if (capabilities & SVGA_CAP_3D)
 267                 DRM_INFO("  3D.\n");
 268         if (capabilities & SVGA_CAP_EXTENDED_FIFO)
 269                 DRM_INFO("  Extended Fifo.\n");
 270         if (capabilities & SVGA_CAP_MULTIMON)
 271                 DRM_INFO("  Multimon.\n");
 272         if (capabilities & SVGA_CAP_PITCHLOCK)
 273                 DRM_INFO("  Pitchlock.\n");
 274         if (capabilities & SVGA_CAP_IRQMASK)
 275                 DRM_INFO("  Irq mask.\n");
 276         if (capabilities & SVGA_CAP_DISPLAY_TOPOLOGY)
 277                 DRM_INFO("  Display Topology.\n");
 278         if (capabilities & SVGA_CAP_GMR)
 279                 DRM_INFO("  GMR.\n");
 280         if (capabilities & SVGA_CAP_TRACES)
 281                 DRM_INFO("  Traces.\n");
 282         if (capabilities & SVGA_CAP_GMR2)
 283                 DRM_INFO("  GMR2.\n");
 284         if (capabilities & SVGA_CAP_SCREEN_OBJECT_2)
 285                 DRM_INFO("  Screen Object 2.\n");
 286         if (capabilities & SVGA_CAP_COMMAND_BUFFERS)
 287                 DRM_INFO("  Command Buffers.\n");
 288         if (capabilities & SVGA_CAP_CMD_BUFFERS_2)
 289                 DRM_INFO("  Command Buffers 2.\n");
 290         if (capabilities & SVGA_CAP_GBOBJECTS)
 291                 DRM_INFO("  Guest Backed Resources.\n");
 292         if (capabilities & SVGA_CAP_DX)
 293                 DRM_INFO("  DX Features.\n");
 294 }
 295
 296 /**
 297  * vmw_dummy_query_bo_create - create a bo to hold a dummy query result
 298  *
 299  * @dev_priv: A device private structure.
 300  *
 301  * This function creates a small buffer object that holds the query
 302  * result for dummy queries emitted as query barriers.
 303  * The function will then map the first page and initialize a pending
 304  * occlusion query result structure, Finally it will unmap the buffer.
 305  * No interruptible waits are done within this function.
 306  *
 307  * Returns an error if bo creation or initialization fails.
 308  */
 309 static int vmw_dummy_query_bo_create(struct vmw_private *dev_priv)
 310 {
 311         int ret;
 312         struct vmw_dma_buffer *vbo;
 313         struct ttm_bo_kmap_obj map;
 314         volatile SVGA3dQueryResult *result;
 315         bool dummy;
 316
 317         /*
 318          * Create the vbo as pinned, so that a tryreserve will
 319          * immediately succeed. This is because we're the only
 320          * user of the bo currently.
 321          */
 322         vbo = kzalloc(sizeof(*vbo), GFP_KERNEL);
 323         if (!vbo)
 324                 return -ENOMEM;
 325
 326         ret = vmw_dmabuf_init(dev_priv, vbo, PAGE_SIZE,
 327                               &vmw_sys_ne_placement, false,
 328                               &vmw_dmabuf_bo_free);
 329         if (unlikely(ret != 0))
 330                 return ret;
 331
 332         ret = ttm_bo_reserve(&vbo->base, false, true, false, NULL);
 333         BUG_ON(ret != 0);
 334         vmw_bo_pin_reserved(vbo, true);
 335
 336         ret = ttm_bo_kmap(&vbo->base, 0, 1, &map);
 337         if (likely(ret == 0)) {
 338                 result = ttm_kmap_obj_virtual(&map, &dummy);
 339                 result->totalSize = sizeof(*result);
 340                 result->state = SVGA3D_QUERYSTATE_PENDING;
 341                 result->result32 = 0xff;
 342                 ttm_bo_kunmap(&map);
 343         }
 344         vmw_bo_pin_reserved(vbo, false);
 345         ttm_bo_unreserve(&vbo->base);
 346
 347         if (unlikely(ret != 0)) {
 348                 DRM_ERROR("Dummy query buffer map failed.\n");
 349                 vmw_dmabuf_unreference(&vbo);
 350         } else
 351                 dev_priv->dummy_query_bo = vbo;
 352
 353         return ret;
 354 }
 355
 356 /**
 357  * vmw_request_device_late - Perform late device setup
 358  *
 359  * @dev_priv: Pointer to device private.
 360  *
 361  * This function performs setup of otables and enables large command
 362  * buffer submission. These tasks are split out to a separate function
 363  * because it reverts vmw_release_device_early and is intended to be used
 364  * by an error path in the hibernation code.
 365  */
 366 static int vmw_request_device_late(struct vmw_private *dev_priv)
 367 {
 368         int ret;
 369
 370         if (dev_priv->has_mob) {
 371                 ret = vmw_otables_setup(dev_priv);
 372                 if (unlikely(ret != 0)) {
 373                         DRM_ERROR("Unable to initialize "
 374                                   "guest Memory OBjects.\n");
 375                         return ret;
 376                 }
 377         }
 378
 379         if (dev_priv->cman) {
 380                 ret = vmw_cmdbuf_set_pool_size(dev_priv->cman,
 381                                                256*4096, 2*4096);
 382                 if (ret) {
 383                         struct vmw_cmdbuf_man *man = dev_priv->cman;
 384
 385                         dev_priv->cman = NULL;
 386                         vmw_cmdbuf_man_destroy(man);
 387                 }
 388         }
 389
 390         return 0;
 391 }
 392
 393 static int vmw_request_device(struct vmw_private *dev_priv)
 394 {
 395         int ret;
 396
 397         ret = vmw_fifo_init(dev_priv, &dev_priv->fifo);
 398         if (unlikely(ret != 0)) {
 399                 DRM_ERROR("Unable to initialize FIFO.\n");
 400                 return ret;
 401         }
 402         vmw_fence_fifo_up(dev_priv->fman);
 403         dev_priv->cman = vmw_cmdbuf_man_create(dev_priv);
 404         if (IS_ERR(dev_priv->cman)) {
 405                 dev_priv->cman = NULL;
 406                 dev_priv->has_dx = false;
 407         }
 408
 409         ret = vmw_request_device_late(dev_priv);
 410         if (ret)
 411                 goto out_no_mob;
 412
 413         ret = vmw_dummy_query_bo_create(dev_priv);
 414         if (unlikely(ret != 0))
 415                 goto out_no_query_bo;
 416
 417         return 0;
 418
 419 out_no_query_bo:
 420         if (dev_priv->cman)
 421                 vmw_cmdbuf_remove_pool(dev_priv->cman);
 422         if (dev_priv->has_mob) {
 423                 (void) ttm_bo_evict_mm(&dev_priv->bdev, VMW_PL_MOB);
 424                 vmw_otables_takedown(dev_priv);
 425         }
 426         if (dev_priv->cman)
 427                 vmw_cmdbuf_man_destroy(dev_priv->cman);
 428 out_no_mob:
 429         vmw_fence_fifo_down(dev_priv->fman);
 430         vmw_fifo_release(dev_priv, &dev_priv->fifo);
 431         return ret;
 432 }
 433
 434 /**
 435  * vmw_release_device_early - Early part of fifo takedown.
 436  *
 437  * @dev_priv: Pointer to device private struct.
 438  *
 439  * This is the first part of command submission takedown, to be called before
 440  * buffer management is taken down.
 441  */
 442 static void vmw_release_device_early(struct vmw_private *dev_priv)
 443 {
 444         /*
 445          * Previous destructions should've released
 446          * the pinned bo.
 447          */
 448
 449         BUG_ON(dev_priv->pinned_bo != NULL);
 450
 451         vmw_dmabuf_unreference(&dev_priv->dummy_query_bo);
 452         if (dev_priv->cman)
 453                 vmw_cmdbuf_remove_pool(dev_priv->cman);
 454
 455         if (dev_priv->has_mob) {
 456                 ttm_bo_evict_mm(&dev_priv->bdev, VMW_PL_MOB);
 457                 vmw_otables_takedown(dev_priv);
 458         }
 459 }
 460
 461 /**
 462  * vmw_release_device_late - Late part of fifo takedown.
 463  *
 464  * @dev_priv: Pointer to device private struct.
 465  *
 466  * This is the last part of the command submission takedown, to be called when
 467  * command submission is no longer needed. It may wait on pending fences.
 468  */
 469 static void vmw_release_device_late(struct vmw_private *dev_priv)
 470 {
 471         vmw_fence_fifo_down(dev_priv->fman);
 472         if (dev_priv->cman)
 473                 vmw_cmdbuf_man_destroy(dev_priv->cman);
 474
 475         vmw_fifo_release(dev_priv, &dev_priv->fifo);
 476 }
 477
 478 /**
 479  * Sets the initial_[width|height] fields on the given vmw_private.
 480  *
 481  * It does so by reading SVGA_REG_[WIDTH|HEIGHT] regs and then
 482  * clamping the value to fb_max_[width|height] fields and the
 483  * VMW_MIN_INITIAL_[WIDTH|HEIGHT].
 484  * If the values appear to be invalid, set them to
 485  * VMW_MIN_INITIAL_[WIDTH|HEIGHT].
 486  */
 487 static void vmw_get_initial_size(struct vmw_private *dev_priv)
 488 {
 489         uint32_t width;
 490         uint32_t height;
 491
 492         width = vmw_read(dev_priv, SVGA_REG_WIDTH);
 493         height = vmw_read(dev_priv, SVGA_REG_HEIGHT);
 494
 495         width = max_t(uint32_t, width, VMW_MIN_INITIAL_WIDTH);
 496         height = max_t(uint32_t, height, VMW_MIN_INITIAL_HEIGHT);
 497
 498         if (width > dev_priv->fb_max_width ||
 499             height > dev_priv->fb_max_height) {
 500
 501                 /*
 502                  * This is a host error and shouldn't occur.
 503                  */
 504
 505                 width = VMW_MIN_INITIAL_WIDTH;
 506                 height = VMW_MIN_INITIAL_HEIGHT;
 507         }
 508
 509         dev_priv->initial_width = width;
 510         dev_priv->initial_height = height;
 511 }
 512
 513 /**
 514  * vmw_dma_select_mode - Determine how DMA mappings should be set up for this
 515  * system.
 516  *
 517  * @dev_priv: Pointer to a struct vmw_private
 518  *
 519  * This functions tries to determine the IOMMU setup and what actions
 520  * need to be taken by the driver to make system pages visible to the
 521  * device.
 522  * If this function decides that DMA is not possible, it returns -EINVAL.
 523  * The driver may then try to disable features of the device that require
 524  * DMA.
 525  */
 526 static int vmw_dma_select_mode(struct vmw_private *dev_priv)
 527 {
 528         static const char *names[vmw_dma_map_max] = {
 529                 [vmw_dma_phys] = "Using physical TTM page addresses.",
 530                 [vmw_dma_alloc_coherent] = "Using coherent TTM pages.",
 531                 [vmw_dma_map_populate] = "Keeping DMA mappings.",
 532                 [vmw_dma_map_bind] = "Giving up DMA mappings early."};
 533 #ifdef CONFIG_X86
 534         const struct dma_map_ops *dma_ops = get_dma_ops(dev_priv->dev->dev);
 535
 536 #ifdef CONFIG_INTEL_IOMMU
 537         if (intel_iommu_enabled) {
 538                 dev_priv->map_mode = vmw_dma_map_populate;
 539                 goto out_fixup;
 540         }
 541 #endif
 542
 543         if (!(vmw_force_iommu || vmw_force_coherent)) {
 544                 dev_priv->map_mode = vmw_dma_phys;
 545                 DRM_INFO("DMA map mode: %s\n", names[dev_priv->map_mode]);
 546                 return 0;
 547         }
 548
 549         dev_priv->map_mode = vmw_dma_map_populate;
 550
 551         if (dma_ops->sync_single_for_cpu)
 552                 dev_priv->map_mode = vmw_dma_alloc_coherent;
 553 #ifdef CONFIG_SWIOTLB
 554         if (swiotlb_nr_tbl() == 0)
 555                 dev_priv->map_mode = vmw_dma_map_populate;
 556 #endif
 557
 558 #ifdef CONFIG_INTEL_IOMMU
 559 out_fixup:
 560 #endif
 561         if (dev_priv->map_mode == vmw_dma_map_populate &&
 562             vmw_restrict_iommu)
 563                 dev_priv->map_mode = vmw_dma_map_bind;
 564
 565         if (vmw_force_coherent)
 566                 dev_priv->map_mode = vmw_dma_alloc_coherent;
 567
 568 #if !defined(CONFIG_SWIOTLB) && !defined(CONFIG_INTEL_IOMMU)
 569         /*
 570          * No coherent page pool
 571          */
 572         if (dev_priv->map_mode == vmw_dma_alloc_coherent)
 573                 return -EINVAL;
 574 #endif
 575
 576 #else /* CONFIG_X86 */
 577         dev_priv->map_mode = vmw_dma_map_populate;
 578 #endif /* CONFIG_X86 */
 579
 580         DRM_INFO("DMA map mode: %s\n", names[dev_priv->map_mode]);
 581
 582         return 0;
 583 }
 584
 585 /**
 586  * vmw_dma_masks - set required page- and dma masks
 587  *
 588  * @dev: Pointer to struct drm-device
 589  *
 590  * With 32-bit we can only handle 32 bit PFNs. Optionally set that
 591  * restriction also for 64-bit systems.
 592  */
 593 #ifdef CONFIG_INTEL_IOMMU
 594 static int vmw_dma_masks(struct vmw_private *dev_priv)
 595 {
 596         struct drm_device *dev = dev_priv->dev;
 597
 598         if (intel_iommu_enabled &&
 599             (sizeof(unsigned long) == 4 || vmw_restrict_dma_mask)) {
 600                 DRM_INFO("Restricting DMA addresses to 44 bits.\n");
 601                 return dma_set_mask(dev->dev, DMA_BIT_MASK(44));
 602         }
 603         return 0;
 604 }
 605 #else
 606 static int vmw_dma_masks(struct vmw_private *dev_priv)
 607 {
 608         return 0;
 609 }
 610 #endif
 611
 612 static int vmw_driver_load(struct drm_device *dev, unsigned long chipset)
 613 {
 614         struct vmw_private *dev_priv;
 615         int ret;
 616         uint32_t svga_id;
 617         enum vmw_res_type i;
 618         bool refuse_dma = false;
 619
 620         dev_priv = kzalloc(sizeof(*dev_priv), GFP_KERNEL);
 621         if (unlikely(dev_priv == NULL)) {
 622                 DRM_ERROR("Failed allocating a device private struct.\n");
 623                 return -ENOMEM;
 624         }
 625
 626         pci_set_master(dev->pdev);
 627
 628         dev_priv->dev = dev;
 629         dev_priv->vmw_chipset = chipset;
 630         dev_priv->last_read_seqno = (uint32_t) -100;
 631         mutex_init(&dev_priv->cmdbuf_mutex);
 632         mutex_init(&dev_priv->release_mutex);
 633         mutex_init(&dev_priv->binding_mutex);
 634         rwlock_init(&dev_priv->resource_lock);
 635         ttm_lock_init(&dev_priv->reservation_sem);
 636         spin_lock_init(&dev_priv->hw_lock);
 637         spin_lock_init(&dev_priv->waiter_lock);
 638         spin_lock_init(&dev_priv->cap_lock);
 639         spin_lock_init(&dev_priv->svga_lock);
 640
 641         for (i = vmw_res_context; i < vmw_res_max; ++i) {
 642                 idr_init(&dev_priv->res_idr[i]);
 643                 INIT_LIST_HEAD(&dev_priv->res_lru[i]);
 644         }
 645
 646         mutex_init(&dev_priv->init_mutex);
 647         init_waitqueue_head(&dev_priv->fence_queue);
 648         init_waitqueue_head(&dev_priv->fifo_queue);
 649         dev_priv->fence_queue_waiters = 0;
 650         dev_priv->fifo_queue_waiters = 0;
 651
 652         dev_priv->used_memory_size = 0;
 653
 654         dev_priv->io_start = pci_resource_start(dev->pdev, 0);
 655         dev_priv->vram_start = pci_resource_start(dev->pdev, 1);
 656         dev_priv->mmio_start = pci_resource_start(dev->pdev, 2);
 657
 658         dev_priv->assume_16bpp = !!vmw_assume_16bpp;
 659
 660         dev_priv->enable_fb = enable_fbdev;
 661
 662         vmw_write(dev_priv, SVGA_REG_ID, SVGA_ID_2);
 663         svga_id = vmw_read(dev_priv, SVGA_REG_ID);
 664         if (svga_id != SVGA_ID_2) {
 665                 ret = -ENOSYS;
 666                 DRM_ERROR("Unsupported SVGA ID 0x%x\n", svga_id);
 667                 goto out_err0;
 668         }
 669
 670         dev_priv->capabilities = vmw_read(dev_priv, SVGA_REG_CAPABILITIES);
 671         ret = vmw_dma_select_mode(dev_priv);
 672         if (unlikely(ret != 0)) {
 673                 DRM_INFO("Restricting capabilities due to IOMMU setup.\n");
 674                 refuse_dma = true;
 675         }
 676
 677         dev_priv->vram_size = vmw_read(dev_priv, SVGA_REG_VRAM_SIZE);
 678         dev_priv->mmio_size = vmw_read(dev_priv, SVGA_REG_MEM_SIZE);
 679         dev_priv->fb_max_width = vmw_read(dev_priv, SVGA_REG_MAX_WIDTH);
 680         dev_priv->fb_max_height = vmw_read(dev_priv, SVGA_REG_MAX_HEIGHT);
 681
 682         vmw_get_initial_size(dev_priv);
 683
 684         if (dev_priv->capabilities & SVGA_CAP_GMR2) {
 685                 dev_priv->max_gmr_ids =
 686                         vmw_read(dev_priv, SVGA_REG_GMR_MAX_IDS);
 687                 dev_priv->max_gmr_pages =
 688                         vmw_read(dev_priv, SVGA_REG_GMRS_MAX_PAGES);
 689                 dev_priv->memory_size =
 690                         vmw_read(dev_priv, SVGA_REG_MEMORY_SIZE);
 691                 dev_priv->memory_size -= dev_priv->vram_size;
 692         } else {
 693                 /*
 694                  * An arbitrary limit of 512MiB on surface
 695                  * memory. But all HWV8 hardware supports GMR2.
 696                  */
 697                 dev_priv->memory_size = 512*1024*1024;
 698         }
 699         dev_priv->max_mob_pages = 0;
 700         dev_priv->max_mob_size = 0;
 701         if (dev_priv->capabilities & SVGA_CAP_GBOBJECTS) {
 702                 uint64_t mem_size =
 703                         vmw_read(dev_priv,
 704                                  SVGA_REG_SUGGESTED_GBOBJECT_MEM_SIZE_KB);
 705
 706                 /*
 707                  * Workaround for low memory 2D VMs to compensate for the
 708                  * allocation taken by fbdev
 709                  */
 710                 if (!(dev_priv->capabilities & SVGA_CAP_3D))
 711                         mem_size *= 2;
 712
 713                 dev_priv->max_mob_pages = mem_size * 1024 / PAGE_SIZE;
 714                 dev_priv->prim_bb_mem =
 715                         vmw_read(dev_priv,
 716                                  SVGA_REG_MAX_PRIMARY_BOUNDING_BOX_MEM);
 717                 dev_priv->max_mob_size =
 718                         vmw_read(dev_priv, SVGA_REG_MOB_MAX_SIZE);
 719                 dev_priv->stdu_max_width =
 720                         vmw_read(dev_priv, SVGA_REG_SCREENTARGET_MAX_WIDTH);
 721                 dev_priv->stdu_max_height =
 722                         vmw_read(dev_priv, SVGA_REG_SCREENTARGET_MAX_HEIGHT);
 723
 724                 vmw_write(dev_priv, SVGA_REG_DEV_CAP,
 725                           SVGA3D_DEVCAP_MAX_TEXTURE_WIDTH);
 726                 dev_priv->texture_max_width = vmw_read(dev_priv,
 727                                                        SVGA_REG_DEV_CAP);
 728                 vmw_write(dev_priv, SVGA_REG_DEV_CAP,
 729                           SVGA3D_DEVCAP_MAX_TEXTURE_HEIGHT);
 730                 dev_priv->texture_max_height = vmw_read(dev_priv,
 731                                                         SVGA_REG_DEV_CAP);
 732         } else {
 733                 dev_priv->texture_max_width = 8192;
 734                 dev_priv->texture_max_height = 8192;
 735                 dev_priv->prim_bb_mem = dev_priv->vram_size;
 736         }
 737
 738         vmw_print_capabilities(dev_priv->capabilities);
 739
 740         ret = vmw_dma_masks(dev_priv);
 741         if (unlikely(ret != 0))
 742                 goto out_err0;
 743
 744         if (dev_priv->capabilities & SVGA_CAP_GMR2) {
 745                 DRM_INFO("Max GMR ids is %u\n",
 746                          (unsigned)dev_priv->max_gmr_ids);
 747                 DRM_INFO("Max number of GMR pages is %u\n",
 748                          (unsigned)dev_priv->max_gmr_pages);
 749                 DRM_INFO("Max dedicated hypervisor surface memory is %u kiB\n",
 750                          (unsigned)dev_priv->memory_size / 1024);
 751         }
 752         DRM_INFO("Maximum display memory size is %u kiB\n",
 753                  dev_priv->prim_bb_mem / 1024);
 754         DRM_INFO("VRAM at 0x%08x size is %u kiB\n",
 755                  dev_priv->vram_start, dev_priv->vram_size / 1024);
 756         DRM_INFO("MMIO at 0x%08x size is %u kiB\n",
 757                  dev_priv->mmio_start, dev_priv->mmio_size / 1024);
 758
 759         ret = vmw_ttm_global_init(dev_priv);
 760         if (unlikely(ret != 0))
 761                 goto out_err0;
 762
 763
 764         vmw_master_init(&dev_priv->fbdev_master);
 765         ttm_lock_set_kill(&dev_priv->fbdev_master.lock, false, SIGTERM);
 766         dev_priv->active_master = &dev_priv->fbdev_master;
 767
 768         dev_priv->mmio_virt = memremap(dev_priv->mmio_start,
 769                                        dev_priv->mmio_size, MEMREMAP_WB);
 770
 771         if (unlikely(dev_priv->mmio_virt == NULL)) {
 772                 ret = -ENOMEM;
 773                 DRM_ERROR("Failed mapping MMIO.\n");
 774                 goto out_err3;
 775         }
 776
 777         /* Need mmio memory to check for fifo pitchlock cap. */
 778         if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY) &&
 779             !(dev_priv->capabilities & SVGA_CAP_PITCHLOCK) &&
 780             !vmw_fifo_have_pitchlock(dev_priv)) {
 781                 ret = -ENOSYS;
 782                 DRM_ERROR("Hardware has no pitchlock\n");
 783                 goto out_err4;
 784         }
 785
 786         dev_priv->tdev = ttm_object_device_init
 787                 (dev_priv->mem_global_ref.object, 12, &vmw_prime_dmabuf_ops);
 788
 789         if (unlikely(dev_priv->tdev == NULL)) {
 790                 DRM_ERROR("Unable to initialize TTM object management.\n");
 791                 ret = -ENOMEM;
 792                 goto out_err4;
 793         }
 794
 795         dev->dev_private = dev_priv;
 796
 797         ret = pci_request_regions(dev->pdev, "vmwgfx probe");
 798         dev_priv->stealth = (ret != 0);
 799         if (dev_priv->stealth) {
 800                 /**
 801                  * Request at least the mmio PCI resource.
 802                  */
 803
 804                 DRM_INFO("It appears like vesafb is loaded. "
 805                          "Ignore above error if any.\n");
 806                 ret = pci_request_region(dev->pdev, 2, "vmwgfx stealth probe");
 807                 if (unlikely(ret != 0)) {
 808                         DRM_ERROR("Failed reserving the SVGA MMIO resource.\n");
 809                         goto out_no_device;
 810                 }
 811         }
 812
 813         if (dev_priv->capabilities & SVGA_CAP_IRQMASK) {
 814                 ret = drm_irq_install(dev, dev->pdev->irq);
 815                 if (ret != 0) {
 816                         DRM_ERROR("Failed installing irq: %d\n", ret);
 817                         goto out_no_irq;
 818                 }
 819         }
 820
 821         dev_priv->fman = vmw_fence_manager_init(dev_priv);
 822         if (unlikely(dev_priv->fman == NULL)) {
 823                 ret = -ENOMEM;
 824                 goto out_no_fman;
 825         }
 826
 827         ret = ttm_bo_device_init(&dev_priv->bdev,
 828                                  dev_priv->bo_global_ref.ref.object,
 829                                  &vmw_bo_driver,
 830                                  dev->anon_inode->i_mapping,
 831                                  VMWGFX_FILE_PAGE_OFFSET,
 832                                  false);
 833         if (unlikely(ret != 0)) {
 834                 DRM_ERROR("Failed initializing TTM buffer object driver.\n");
 835                 goto out_no_bdev;
 836         }
 837
 838         /*
 839          * Enable VRAM, but initially don't use it until SVGA is enabled and
 840          * unhidden.
 841          */
 842         ret = ttm_bo_init_mm(&dev_priv->bdev, TTM_PL_VRAM,
 843                              (dev_priv->vram_size >> PAGE_SHIFT));
 844         if (unlikely(ret != 0)) {
 845                 DRM_ERROR("Failed initializing memory manager for VRAM.\n");
 846                 goto out_no_vram;
 847         }
 848         dev_priv->bdev.man[TTM_PL_VRAM].use_type = false;
 849
 850         dev_priv->has_gmr = true;
 851         if (((dev_priv->capabilities & (SVGA_CAP_GMR | SVGA_CAP_GMR2)) == 0) ||
 852             refuse_dma || ttm_bo_init_mm(&dev_priv->bdev, VMW_PL_GMR,
 853                                          VMW_PL_GMR) != 0) {
 854                 DRM_INFO("No GMR memory available. "
 855                          "Graphics memory resources are very limited.\n");
 856                 dev_priv->has_gmr = false;
 857         }
 858
 859         if (dev_priv->capabilities & SVGA_CAP_GBOBJECTS) {
 860                 dev_priv->has_mob = true;
 861                 if (ttm_bo_init_mm(&dev_priv->bdev, VMW_PL_MOB,
 862                                    VMW_PL_MOB) != 0) {
 863                         DRM_INFO("No MOB memory available. "
 864                                  "3D will be disabled.\n");
 865                         dev_priv->has_mob = false;
 866                 }
 867         }
 868
 869         if (dev_priv->has_mob) {
 870                 spin_lock(&dev_priv->cap_lock);
 871                 vmw_write(dev_priv, SVGA_REG_DEV_CAP, SVGA3D_DEVCAP_DX);
 872                 dev_priv->has_dx = !!vmw_read(dev_priv, SVGA_REG_DEV_CAP);
 873                 spin_unlock(&dev_priv->cap_lock);
 874         }
 875
 876
 877         ret = vmw_kms_init(dev_priv);
 878         if (unlikely(ret != 0))
 879                 goto out_no_kms;
 880         vmw_overlay_init(dev_priv);
 881
 882         ret = vmw_request_device(dev_priv);
 883         if (ret)
 884                 goto out_no_fifo;
 885
 886         DRM_INFO("DX: %s\n", dev_priv->has_dx ? "yes." : "no.");
 887
 888         if (dev_priv->enable_fb) {
 889                 vmw_fifo_resource_inc(dev_priv);
 890                 vmw_svga_enable(dev_priv);
 891                 vmw_fb_init(dev_priv);
 892         }
 893
 894         dev_priv->pm_nb.notifier_call = vmwgfx_pm_notifier;
 895         register_pm_notifier(&dev_priv->pm_nb);
 896
 897         return 0;
 898
 899 out_no_fifo:
 900         vmw_overlay_close(dev_priv);
 901         vmw_kms_close(dev_priv);
 902 out_no_kms:
 903         if (dev_priv->has_mob)
 904                 (void) ttm_bo_clean_mm(&dev_priv->bdev, VMW_PL_MOB);
 905         if (dev_priv->has_gmr)
 906                 (void) ttm_bo_clean_mm(&dev_priv->bdev, VMW_PL_GMR);
 907         (void)ttm_bo_clean_mm(&dev_priv->bdev, TTM_PL_VRAM);
 908 out_no_vram:
 909         (void)ttm_bo_device_release(&dev_priv->bdev);
 910 out_no_bdev:
 911         vmw_fence_manager_takedown(dev_priv->fman);
 912 out_no_fman:
 913         if (dev_priv->capabilities & SVGA_CAP_IRQMASK)
 914                 drm_irq_uninstall(dev_priv->dev);
 915 out_no_irq:
 916         if (dev_priv->stealth)
 917                 pci_release_region(dev->pdev, 2);
 918         else
 919                 pci_release_regions(dev->pdev);
 920 out_no_device:
 921         ttm_object_device_release(&dev_priv->tdev);
 922 out_err4:
 923         memunmap(dev_priv->mmio_virt);
 924 out_err3:
 925         vmw_ttm_global_release(dev_priv);
 926 out_err0:
 927         for (i = vmw_res_context; i < vmw_res_max; ++i)
 928                 idr_destroy(&dev_priv->res_idr[i]);
 929
 930         if (dev_priv->ctx.staged_bindings)
 931                 vmw_binding_state_free(dev_priv->ctx.staged_bindings);
 932         kfree(dev_priv);
 933         return ret;
 934 }
 935
 936 static int vmw_driver_unload(struct drm_device *dev)
 937 {
 938         struct vmw_private *dev_priv = vmw_priv(dev);
 939         enum vmw_res_type i;
 940
 941         unregister_pm_notifier(&dev_priv->pm_nb);
 942
 943         if (dev_priv->ctx.res_ht_initialized)
 944                 drm_ht_remove(&dev_priv->ctx.res_ht);
 945         vfree(dev_priv->ctx.cmd_bounce);
 946         if (dev_priv->enable_fb) {
 947                 vmw_fb_off(dev_priv);
 948                 vmw_fb_close(dev_priv);
 949                 vmw_fifo_resource_dec(dev_priv);
 950                 vmw_svga_disable(dev_priv);
 951         }
 952
 953         vmw_kms_close(dev_priv);
 954         vmw_overlay_close(dev_priv);
 955
 956         if (dev_priv->has_gmr)
 957                 (void)ttm_bo_clean_mm(&dev_priv->bdev, VMW_PL_GMR);
 958         (void)ttm_bo_clean_mm(&dev_priv->bdev, TTM_PL_VRAM);
 959
 960         vmw_release_device_early(dev_priv);
 961         if (dev_priv->has_mob)
 962                 (void) ttm_bo_clean_mm(&dev_priv->bdev, VMW_PL_MOB);
 963         (void) ttm_bo_device_release(&dev_priv->bdev);
 964         vmw_release_device_late(dev_priv);
 965         vmw_fence_manager_takedown(dev_priv->fman);
 966         if (dev_priv->capabilities & SVGA_CAP_IRQMASK)
 967                 drm_irq_uninstall(dev_priv->dev);
 968         if (dev_priv->stealth)
 969                 pci_release_region(dev->pdev, 2);
 970         else
 971                 pci_release_regions(dev->pdev);
 972
 973         ttm_object_device_release(&dev_priv->tdev);
 974         memunmap(dev_priv->mmio_virt);
 975         if (dev_priv->ctx.staged_bindings)
 976                 vmw_binding_state_free(dev_priv->ctx.staged_bindings);
 977         vmw_ttm_global_release(dev_priv);
 978
 979         for (i = vmw_res_context; i < vmw_res_max; ++i)
 980                 idr_destroy(&dev_priv->res_idr[i]);
 981
 982         kfree(dev_priv);
 983
 984         return 0;
 985 }
 986
 987 static void vmw_preclose(struct drm_device *dev,
 988                          struct drm_file *file_priv)
 989 {
 990         struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
 991         struct vmw_private *dev_priv = vmw_priv(dev);
 992
 993         vmw_event_fence_fpriv_gone(dev_priv->fman, &vmw_fp->fence_events);
 994 }
 995
 996 static void vmw_postclose(struct drm_device *dev,
 997                          struct drm_file *file_priv)
 998 {
 999         struct vmw_fpriv *vmw_fp;
1000
1001         vmw_fp = vmw_fpriv(file_priv);
1002
1003         if (vmw_fp->locked_master) {
1004                 struct vmw_master *vmaster =
1005                         vmw_master(vmw_fp->locked_master);
1006
1007                 ttm_lock_set_kill(&vmaster->lock, true, SIGTERM);
1008                 ttm_vt_unlock(&vmaster->lock);
1009                 drm_master_put(&vmw_fp->locked_master);
1010         }
1011
1012         ttm_object_file_release(&vmw_fp->tfile);
1013         kfree(vmw_fp);
1014 }
1015
1016 static int vmw_driver_open(struct drm_device *dev, struct drm_file *file_priv)
1017 {
1018         struct vmw_private *dev_priv = vmw_priv(dev);
1019         struct vmw_fpriv *vmw_fp;
1020         int ret = -ENOMEM;
1021
1022         vmw_fp = kzalloc(sizeof(*vmw_fp), GFP_KERNEL);
1023         if (unlikely(vmw_fp == NULL))
1024                 return ret;
1025
1026         INIT_LIST_HEAD(&vmw_fp->fence_events);
1027         vmw_fp->tfile = ttm_object_file_init(dev_priv->tdev, 10);
1028         if (unlikely(vmw_fp->tfile == NULL))
1029                 goto out_no_tfile;
1030
1031         file_priv->driver_priv = vmw_fp;
1032
1033         return 0;
1034
1035 out_no_tfile:
1036         kfree(vmw_fp);
1037         return ret;
1038 }
1039
1040 static struct vmw_master *vmw_master_check(struct drm_device *dev,
1041                                            struct drm_file *file_priv,
1042                                            unsigned int flags)
1043 {
1044         int ret;
1045         struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
1046         struct vmw_master *vmaster;
1047
1048         if (file_priv->minor->type != DRM_MINOR_LEGACY ||
1049             !(flags & DRM_AUTH))
1050                 return NULL;
1051
1052         ret = mutex_lock_interruptible(&dev->master_mutex);
1053         if (unlikely(ret != 0))
1054                 return ERR_PTR(-ERESTARTSYS);
1055
1056         if (file_priv->is_master) {
1057                 mutex_unlock(&dev->master_mutex);
1058                 return NULL;
1059         }
1060
1061         /*
1062          * Check if we were previously master, but now dropped. In that
1063          * case, allow at least render node functionality.
1064          */
1065         if (vmw_fp->locked_master) {
1066                 mutex_unlock(&dev->master_mutex);
1067
1068                 if (flags & DRM_RENDER_ALLOW)
1069                         return NULL;
1070
1071                 DRM_ERROR("Dropped master trying to access ioctl that "
1072                           "requires authentication.\n");
1073                 return ERR_PTR(-EACCES);
1074         }
1075         mutex_unlock(&dev->master_mutex);
1076
1077         /*
1078          * Take the TTM lock. Possibly sleep waiting for the authenticating
1079          * master to become master again, or for a SIGTERM if the
1080          * authenticating master exits.
1081          */
1082         vmaster = vmw_master(file_priv->master);
1083         ret = ttm_read_lock(&vmaster->lock, true);
1084         if (unlikely(ret != 0))
1085                 vmaster = ERR_PTR(ret);
1086
1087         return vmaster;
1088 }
1089
1090 static long vmw_generic_ioctl(struct file *filp, unsigned int cmd,
1091                               unsigned long arg,
1092                               long (*ioctl_func)(struct file *, unsigned int,
1093                                                  unsigned long))
1094 {
1095         struct drm_file *file_priv = filp->private_data;
1096         struct drm_device *dev = file_priv->minor->dev;
1097         unsigned int nr = DRM_IOCTL_NR(cmd);
1098         struct vmw_master *vmaster;
1099         unsigned int flags;
1100         long ret;
1101
1102         /*
1103          * Do extra checking on driver private ioctls.
1104          */
1105
1106         if ((nr >= DRM_COMMAND_BASE) && (nr < DRM_COMMAND_END)
1107             && (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls)) {
1108                 const struct drm_ioctl_desc *ioctl =
1109                         &vmw_ioctls[nr - DRM_COMMAND_BASE];
1110
1111                 if (nr == DRM_COMMAND_BASE + DRM_VMW_EXECBUF) {
1112                         ret = (long) drm_ioctl_permit(ioctl->flags, file_priv);
1113                         if (unlikely(ret != 0))
1114                                 return ret;
1115
1116                         if (unlikely((cmd & (IOC_IN | IOC_OUT)) != IOC_IN))
1117                                 goto out_io_encoding;
1118
1119                         return (long) vmw_execbuf_ioctl(dev, arg, file_priv,
1120                                                         _IOC_SIZE(cmd));
1121                 }
1122
1123                 if (unlikely(ioctl->cmd != cmd))
1124                         goto out_io_encoding;
1125
1126                 flags = ioctl->flags;
1127         } else if (!drm_ioctl_flags(nr, &flags))
1128                 return -EINVAL;
1129
1130         vmaster = vmw_master_check(dev, file_priv, flags);
1131         if (IS_ERR(vmaster)) {
1132                 ret = PTR_ERR(vmaster);
1133
1134                 if (ret != -ERESTARTSYS)
1135                         DRM_INFO("IOCTL ERROR Command %d, Error %ld.\n",
1136                                  nr, ret);
1137                 return ret;
1138         }
1139
1140         ret = ioctl_func(filp, cmd, arg);
1141         if (vmaster)
1142                 ttm_read_unlock(&vmaster->lock);
1143
1144         return ret;
1145
1146 out_io_encoding:
1147         DRM_ERROR("Invalid command format, ioctl %d\n",
1148                   nr - DRM_COMMAND_BASE);
1149
1150         return -EINVAL;
1151 }
1152
1153 static long vmw_unlocked_ioctl(struct file *filp, unsigned int cmd,
1154                                unsigned long arg)
1155 {
1156         return vmw_generic_ioctl(filp, cmd, arg, &drm_ioctl);
1157 }
1158
1159 #ifdef CONFIG_COMPAT
1160 static long vmw_compat_ioctl(struct file *filp, unsigned int cmd,
1161                              unsigned long arg)
1162 {
1163         return vmw_generic_ioctl(filp, cmd, arg, &drm_compat_ioctl);
1164 }
1165 #endif
1166
1167 static void vmw_lastclose(struct drm_device *dev)
1168 {
1169 }
1170
1171 static void vmw_master_init(struct vmw_master *vmaster)
1172 {
1173         ttm_lock_init(&vmaster->lock);
1174 }
1175
1176 static int vmw_master_create(struct drm_device *dev,
1177                              struct drm_master *master)
1178 {
1179         struct vmw_master *vmaster;
1180
1181         vmaster = kzalloc(sizeof(*vmaster), GFP_KERNEL);
1182         if (unlikely(vmaster == NULL))
1183                 return -ENOMEM;
1184
1185         vmw_master_init(vmaster);
1186         ttm_lock_set_kill(&vmaster->lock, true, SIGTERM);
1187         master->driver_priv = vmaster;
1188
1189         return 0;
1190 }
1191
1192 static void vmw_master_destroy(struct drm_device *dev,
1193                                struct drm_master *master)
1194 {
1195         struct vmw_master *vmaster = vmw_master(master);
1196
1197         master->driver_priv = NULL;
1198         kfree(vmaster);
1199 }
1200
1201 static int vmw_master_set(struct drm_device *dev,
1202                           struct drm_file *file_priv,
1203                           bool from_open)
1204 {
1205         struct vmw_private *dev_priv = vmw_priv(dev);
1206         struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
1207         struct vmw_master *active = dev_priv->active_master;
1208         struct vmw_master *vmaster = vmw_master(file_priv->master);
1209         int ret = 0;
1210
1211         if (active) {
1212                 BUG_ON(active != &dev_priv->fbdev_master);
1213                 ret = ttm_vt_lock(&active->lock, false, vmw_fp->tfile);
1214                 if (unlikely(ret != 0))
1215                         return ret;
1216
1217                 ttm_lock_set_kill(&active->lock, true, SIGTERM);
1218                 dev_priv->active_master = NULL;
1219         }
1220
1221         ttm_lock_set_kill(&vmaster->lock, false, SIGTERM);
1222         if (!from_open) {
1223                 ttm_vt_unlock(&vmaster->lock);
1224                 BUG_ON(vmw_fp->locked_master != file_priv->master);
1225                 drm_master_put(&vmw_fp->locked_master);
1226         }
1227
1228         dev_priv->active_master = vmaster;
1229
1230         return 0;
1231 }
1232
1233 static void vmw_master_drop(struct drm_device *dev,
1234                             struct drm_file *file_priv,
1235                             bool from_release)
1236 {
1237         struct vmw_private *dev_priv = vmw_priv(dev);
1238         struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
1239         struct vmw_master *vmaster = vmw_master(file_priv->master);
1240         int ret;
1241
1242         /**
1243          * Make sure the master doesn't disappear while we have
1244          * it locked.
1245          */
1246
1247         vmw_fp->locked_master = drm_master_get(file_priv->master);
1248         ret = ttm_vt_lock(&vmaster->lock, false, vmw_fp->tfile);
1249         vmw_kms_legacy_hotspot_clear(dev_priv);
1250         if (unlikely((ret != 0))) {
1251                 DRM_ERROR("Unable to lock TTM at VT switch.\n");
1252                 drm_master_put(&vmw_fp->locked_master);
1253         }
1254
1255         ttm_lock_set_kill(&vmaster->lock, false, SIGTERM);
1256
1257         if (!dev_priv->enable_fb)
1258                 vmw_svga_disable(dev_priv);
1259
1260         dev_priv->active_master = &dev_priv->fbdev_master;
1261         ttm_lock_set_kill(&dev_priv->fbdev_master.lock, false, SIGTERM);
1262         ttm_vt_unlock(&dev_priv->fbdev_master.lock);
1263
1264         if (dev_priv->enable_fb)
1265                 vmw_fb_on(dev_priv);
1266 }
1267
1268 /**
1269  * __vmw_svga_enable - Enable SVGA mode, FIFO and use of VRAM.
1270  *
1271  * @dev_priv: Pointer to device private struct.
1272  * Needs the reservation sem to be held in non-exclusive mode.
1273  */
1274 static void __vmw_svga_enable(struct vmw_private *dev_priv)
1275 {
1276         spin_lock(&dev_priv->svga_lock);
1277         if (!dev_priv->bdev.man[TTM_PL_VRAM].use_type) {
1278                 vmw_write(dev_priv, SVGA_REG_ENABLE, SVGA_REG_ENABLE);
1279                 dev_priv->bdev.man[TTM_PL_VRAM].use_type = true;
1280         }
1281         spin_unlock(&dev_priv->svga_lock);
1282 }
1283
1284 /**
1285  * vmw_svga_enable - Enable SVGA mode, FIFO and use of VRAM.
1286  *
1287  * @dev_priv: Pointer to device private struct.
1288  */
1289 void vmw_svga_enable(struct vmw_private *dev_priv)
1290 {
1291         ttm_read_lock(&dev_priv->reservation_sem, false);
1292         __vmw_svga_enable(dev_priv);
1293         ttm_read_unlock(&dev_priv->reservation_sem);
1294 }
1295
1296 /**
1297  * __vmw_svga_disable - Disable SVGA mode and use of VRAM.
1298  *
1299  * @dev_priv: Pointer to device private struct.
1300  * Needs the reservation sem to be held in exclusive mode.
1301  * Will not empty VRAM. VRAM must be emptied by caller.
1302  */
1303 static void __vmw_svga_disable(struct vmw_private *dev_priv)
1304 {
1305         spin_lock(&dev_priv->svga_lock);
1306         if (dev_priv->bdev.man[TTM_PL_VRAM].use_type) {
1307                 dev_priv->bdev.man[TTM_PL_VRAM].use_type = false;
1308                 vmw_write(dev_priv, SVGA_REG_ENABLE,
1309                           SVGA_REG_ENABLE_HIDE |
1310                           SVGA_REG_ENABLE_ENABLE);
1311         }
1312         spin_unlock(&dev_priv->svga_lock);
1313 }
1314
1315 /**
1316  * vmw_svga_disable - Disable SVGA_MODE, and use of VRAM. Keep the fifo
1317  * running.
1318  *
1319  * @dev_priv: Pointer to device private struct.
1320  * Will empty VRAM.
1321  */
1322 void vmw_svga_disable(struct vmw_private *dev_priv)
1323 {
1324         ttm_write_lock(&dev_priv->reservation_sem, false);
1325         spin_lock(&dev_priv->svga_lock);
1326         if (dev_priv->bdev.man[TTM_PL_VRAM].use_type) {
1327                 dev_priv->bdev.man[TTM_PL_VRAM].use_type = false;
1328                 spin_unlock(&dev_priv->svga_lock);
1329                 if (ttm_bo_evict_mm(&dev_priv->bdev, TTM_PL_VRAM))
1330                         DRM_ERROR("Failed evicting VRAM buffers.\n");
1331                 vmw_write(dev_priv, SVGA_REG_ENABLE,
1332                           SVGA_REG_ENABLE_HIDE |
1333                           SVGA_REG_ENABLE_ENABLE);
1334         } else
1335                 spin_unlock(&dev_priv->svga_lock);
1336         ttm_write_unlock(&dev_priv->reservation_sem);
1337 }
1338
1339 static void vmw_remove(struct pci_dev *pdev)
1340 {
1341         struct drm_device *dev = pci_get_drvdata(pdev);
1342
1343         pci_disable_device(pdev);
1344         drm_put_dev(dev);
1345 }
1346
1347 static int vmwgfx_pm_notifier(struct notifier_block *nb, unsigned long val,
1348                               void *ptr)
1349 {
1350         struct vmw_private *dev_priv =
1351                 container_of(nb, struct vmw_private, pm_nb);
1352
1353         switch (val) {
1354         case PM_HIBERNATION_PREPARE:
1355                 if (dev_priv->enable_fb)
1356                         vmw_fb_off(dev_priv);
1357                 ttm_suspend_lock(&dev_priv->reservation_sem);
1358
1359                 /*
1360                  * This empties VRAM and unbinds all GMR bindings.
1361                  * Buffer contents is moved to swappable memory.
1362                  */
1363                 vmw_execbuf_release_pinned_bo(dev_priv);
1364                 vmw_resource_evict_all(dev_priv);
1365                 vmw_release_device_early(dev_priv);
1366                 ttm_bo_swapout_all(&dev_priv->bdev);
1367                 vmw_fence_fifo_down(dev_priv->fman);
1368                 break;
1369         case PM_POST_HIBERNATION:
1370         case PM_POST_RESTORE:
1371                 vmw_fence_fifo_up(dev_priv->fman);
1372                 ttm_suspend_unlock(&dev_priv->reservation_sem);
1373                 if (dev_priv->enable_fb)
1374                         vmw_fb_on(dev_priv);
1375                 break;
1376         case PM_RESTORE_PREPARE:
1377                 break;
1378         default:
1379                 break;
1380         }
1381         return 0;
1382 }
1383
1384 static int vmw_pci_suspend(struct pci_dev *pdev, pm_message_t state)
1385 {
1386         struct drm_device *dev = pci_get_drvdata(pdev);
1387         struct vmw_private *dev_priv = vmw_priv(dev);
1388
1389         if (dev_priv->refuse_hibernation)
1390                 return -EBUSY;
1391
1392         pci_save_state(pdev);
1393         pci_disable_device(pdev);
1394         pci_set_power_state(pdev, PCI_D3hot);
1395         return 0;
1396 }
1397
1398 static int vmw_pci_resume(struct pci_dev *pdev)
1399 {
1400         pci_set_power_state(pdev, PCI_D0);
1401         pci_restore_state(pdev);
1402         return pci_enable_device(pdev);
1403 }
1404
1405 static int vmw_pm_suspend(struct device *kdev)
1406 {
1407         struct pci_dev *pdev = to_pci_dev(kdev);
1408         struct pm_message dummy;
1409
1410         dummy.event = 0;
1411
1412         return vmw_pci_suspend(pdev, dummy);
1413 }
1414
1415 static int vmw_pm_resume(struct device *kdev)
1416 {
1417         struct pci_dev *pdev = to_pci_dev(kdev);
1418
1419         return vmw_pci_resume(pdev);
1420 }
1421
1422 static int vmw_pm_freeze(struct device *kdev)
1423 {
1424         struct pci_dev *pdev = to_pci_dev(kdev);
1425         struct drm_device *dev = pci_get_drvdata(pdev);
1426         struct vmw_private *dev_priv = vmw_priv(dev);
1427
1428         dev_priv->suspended = true;
1429         if (dev_priv->enable_fb)
1430                 vmw_fifo_resource_dec(dev_priv);
1431
1432         if (atomic_read(&dev_priv->num_fifo_resources) != 0) {
1433                 DRM_ERROR("Can't hibernate while 3D resources are active.\n");
1434                 if (dev_priv->enable_fb)
1435                         vmw_fifo_resource_inc(dev_priv);
1436                 WARN_ON(vmw_request_device_late(dev_priv));
1437                 dev_priv->suspended = false;
1438                 return -EBUSY;
1439         }
1440
1441         if (dev_priv->enable_fb)
1442                 __vmw_svga_disable(dev_priv);
1443
1444         vmw_release_device_late(dev_priv);
1445
1446         return 0;
1447 }
1448
1449 static int vmw_pm_restore(struct device *kdev)
1450 {
1451         struct pci_dev *pdev = to_pci_dev(kdev);
1452         struct drm_device *dev = pci_get_drvdata(pdev);
1453         struct vmw_private *dev_priv = vmw_priv(dev);
1454         int ret;
1455
1456         vmw_write(dev_priv, SVGA_REG_ID, SVGA_ID_2);
1457         (void) vmw_read(dev_priv, SVGA_REG_ID);
1458
1459         if (dev_priv->enable_fb)
1460                 vmw_fifo_resource_inc(dev_priv);
1461
1462         ret = vmw_request_device(dev_priv);
1463         if (ret)
1464                 return ret;
1465
1466         if (dev_priv->enable_fb)
1467                 __vmw_svga_enable(dev_priv);
1468
1469         dev_priv->suspended = false;
1470
1471         return 0;
1472 }
1473
1474 static const struct dev_pm_ops vmw_pm_ops = {
1475         .freeze = vmw_pm_freeze,
1476         .thaw = vmw_pm_restore,
1477         .restore = vmw_pm_restore,
1478         .suspend = vmw_pm_suspend,
1479         .resume = vmw_pm_resume,
1480 };
1481
1482 static const struct file_operations vmwgfx_driver_fops = {
1483         .owner = THIS_MODULE,
1484         .open = drm_open,
1485         .release = drm_release,
1486         .unlocked_ioctl = vmw_unlocked_ioctl,
1487         .mmap = vmw_mmap,
1488         .poll = vmw_fops_poll,
1489         .read = vmw_fops_read,
1490 #if defined(CONFIG_COMPAT)
1491         .compat_ioctl = vmw_compat_ioctl,
1492 #endif
1493         .llseek = noop_llseek,
1494 };
1495
1496 static struct drm_driver driver = {
1497         .driver_features = DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED |
1498         DRIVER_MODESET | DRIVER_PRIME | DRIVER_RENDER,
1499         .load = vmw_driver_load,
1500         .unload = vmw_driver_unload,
1501         .lastclose = vmw_lastclose,
1502         .irq_preinstall = vmw_irq_preinstall,
1503         .irq_postinstall = vmw_irq_postinstall,
1504         .irq_uninstall = vmw_irq_uninstall,
1505         .irq_handler = vmw_irq_handler,
1506         .get_vblank_counter = vmw_get_vblank_counter,
1507         .enable_vblank = vmw_enable_vblank,
1508         .disable_vblank = vmw_disable_vblank,
1509         .ioctls = vmw_ioctls,
1510         .num_ioctls = ARRAY_SIZE(vmw_ioctls),
1511         .master_create = vmw_master_create,
1512         .master_destroy = vmw_master_destroy,
1513         .master_set = vmw_master_set,
1514         .master_drop = vmw_master_drop,
1515         .open = vmw_driver_open,
1516         .preclose = vmw_preclose,
1517         .postclose = vmw_postclose,
1518         .set_busid = drm_pci_set_busid,
1519
1520         .dumb_create = vmw_dumb_create,
1521         .dumb_map_offset = vmw_dumb_map_offset,
1522         .dumb_destroy = vmw_dumb_destroy,
1523
1524         .prime_fd_to_handle = vmw_prime_fd_to_handle,
1525         .prime_handle_to_fd = vmw_prime_handle_to_fd,
1526
1527         .fops = &vmwgfx_driver_fops,
1528         .name = VMWGFX_DRIVER_NAME,
1529         .desc = VMWGFX_DRIVER_DESC,
1530         .date = VMWGFX_DRIVER_DATE,
1531         .major = VMWGFX_DRIVER_MAJOR,
1532         .minor = VMWGFX_DRIVER_MINOR,
1533         .patchlevel = VMWGFX_DRIVER_PATCHLEVEL
1534 };
1535
1536 static struct pci_driver vmw_pci_driver = {
1537         .name = VMWGFX_DRIVER_NAME,
1538         .id_table = vmw_pci_id_list,
1539         .probe = vmw_probe,
1540         .remove = vmw_remove,
1541         .driver = {
1542                 .pm = &vmw_pm_ops
1543         }
1544 };
1545
1546 static int vmw_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1547 {
1548         return drm_get_pci_dev(pdev, ent, &driver);
1549 }
1550
1551 static int __init vmwgfx_init(void)
1552 {
1553         int ret;
1554
1555 #ifdef CONFIG_VGA_CONSOLE
1556         if (vgacon_text_force())
1557                 return -EINVAL;
1558 #endif
1559
1560         ret = drm_pci_init(&driver, &vmw_pci_driver);
1561         if (ret)
1562                 DRM_ERROR("Failed initializing DRM.\n");
1563         return ret;
1564 }
1565
1566 static void __exit vmwgfx_exit(void)
1567 {
1568         drm_pci_exit(&driver, &vmw_pci_driver);
1569 }
1570
1571 module_init(vmwgfx_init);
1572 module_exit(vmwgfx_exit);
1573
1574 MODULE_AUTHOR("VMware Inc. and others");
1575 MODULE_DESCRIPTION("Standalone drm driver for the VMware SVGA device");
1576 MODULE_LICENSE("GPL and additional rights");
1577 MODULE_VERSION(__stringify(VMWGFX_DRIVER_MAJOR) "."
1578                __stringify(VMWGFX_DRIVER_MINOR) "."
1579                __stringify(VMWGFX_DRIVER_PATCHLEVEL) "."
1580                "0");