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