drivers/gpu/drm/vmwgfx/vmwgfx

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This source file includes following definitions.
vmw_print_capabilities2
vmw_print_capabilities
vmw_dummy_query_bo_create
vmw_request_device_late
vmw_request_device
vmw_release_device_early
vmw_release_device_late
vmw_get_initial_size
vmw_dma_select_mode
vmw_dma_masks
vmw_driver_load
vmw_driver_unload
vmw_postclose
vmw_driver_open
vmw_generic_ioctl
vmw_unlocked_ioctl
vmw_compat_ioctl
vmw_master_set
vmw_master_drop
__vmw_svga_enable
vmw_svga_enable
__vmw_svga_disable
vmw_svga_disable
vmw_remove
vmwgfx_pm_notifier
vmw_pci_suspend
vmw_pci_resume
vmw_pm_suspend
vmw_pm_resume
vmw_pm_freeze
vmw_pm_restore
vmw_probe
vmwgfx_init
vmwgfx_exit
   1 // SPDX-License-Identifier: GPL-2.0 OR MIT
   2 /**************************************************************************
   3  *
   4  * Copyright 2009-2016 VMware, Inc., Palo Alto, CA., USA
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  21  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  22  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  23  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  24  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27 
  28 #include <linux/console.h>
  29 #include <linux/dma-mapping.h>
  30 #include <linux/module.h>
  31 
  32 #include <drm/drm_drv.h>
  33 #include <drm/drm_ioctl.h>
  34 #include <drm/drm_pci.h>
  35 #include <drm/drm_sysfs.h>
  36 #include <drm/ttm/ttm_bo_driver.h>
  37 #include <drm/ttm/ttm_module.h>
  38 #include <drm/ttm/ttm_placement.h>
  39 
  40 #include "ttm_object.h"
  41 #include "vmwgfx_binding.h"
  42 #include "vmwgfx_drv.h"
  43 
  44 #define VMWGFX_DRIVER_DESC "Linux drm driver for VMware graphics devices"
  45 #define VMWGFX_CHIP_SVGAII 0
  46 #define VMW_FB_RESERVATION 0
  47 
  48 #define VMW_MIN_INITIAL_WIDTH 800
  49 #define VMW_MIN_INITIAL_HEIGHT 600
  50 
  51 #ifndef VMWGFX_GIT_VERSION
  52 #define VMWGFX_GIT_VERSION "Unknown"
  53 #endif
  54 
  55 #define VMWGFX_REPO "In Tree"
  56 
  57 #define VMWGFX_VALIDATION_MEM_GRAN (16*PAGE_SIZE)
  58 
  59 
  60 /**
  61  * Fully encoded drm commands. Might move to vmw_drm.h
  62  */
  63 
  64 #define DRM_IOCTL_VMW_GET_PARAM                                 \
  65         DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_GET_PARAM,          \
  66                  struct drm_vmw_getparam_arg)
  67 #define DRM_IOCTL_VMW_ALLOC_DMABUF                              \
  68         DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_ALLOC_DMABUF,       \
  69                 union drm_vmw_alloc_dmabuf_arg)
  70 #define DRM_IOCTL_VMW_UNREF_DMABUF                              \
  71         DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_DMABUF,        \
  72                 struct drm_vmw_unref_dmabuf_arg)
  73 #define DRM_IOCTL_VMW_CURSOR_BYPASS                             \
  74         DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_CURSOR_BYPASS,       \
  75                  struct drm_vmw_cursor_bypass_arg)
  76 
  77 #define DRM_IOCTL_VMW_CONTROL_STREAM                            \
  78         DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_CONTROL_STREAM,      \
  79                  struct drm_vmw_control_stream_arg)
  80 #define DRM_IOCTL_VMW_CLAIM_STREAM                              \
  81         DRM_IOR(DRM_COMMAND_BASE + DRM_VMW_CLAIM_STREAM,        \
  82                  struct drm_vmw_stream_arg)
  83 #define DRM_IOCTL_VMW_UNREF_STREAM                              \
  84         DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_STREAM,        \
  85                  struct drm_vmw_stream_arg)
  86 
  87 #define DRM_IOCTL_VMW_CREATE_CONTEXT                            \
  88         DRM_IOR(DRM_COMMAND_BASE + DRM_VMW_CREATE_CONTEXT,      \
  89                 struct drm_vmw_context_arg)
  90 #define DRM_IOCTL_VMW_UNREF_CONTEXT                             \
  91         DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_CONTEXT,       \
  92                 struct drm_vmw_context_arg)
  93 #define DRM_IOCTL_VMW_CREATE_SURFACE                            \
  94         DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_CREATE_SURFACE,     \
  95                  union drm_vmw_surface_create_arg)
  96 #define DRM_IOCTL_VMW_UNREF_SURFACE                             \
  97         DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_SURFACE,       \
  98                  struct drm_vmw_surface_arg)
  99 #define DRM_IOCTL_VMW_REF_SURFACE                               \
 100         DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_REF_SURFACE,        \
 101                  union drm_vmw_surface_reference_arg)
 102 #define DRM_IOCTL_VMW_EXECBUF                                   \
 103         DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_EXECBUF,             \
 104                 struct drm_vmw_execbuf_arg)
 105 #define DRM_IOCTL_VMW_GET_3D_CAP                                \
 106         DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_GET_3D_CAP,          \
 107                  struct drm_vmw_get_3d_cap_arg)
 108 #define DRM_IOCTL_VMW_FENCE_WAIT                                \
 109         DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_FENCE_WAIT,         \
 110                  struct drm_vmw_fence_wait_arg)
 111 #define DRM_IOCTL_VMW_FENCE_SIGNALED                            \
 112         DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_FENCE_SIGNALED,     \
 113                  struct drm_vmw_fence_signaled_arg)
 114 #define DRM_IOCTL_VMW_FENCE_UNREF                               \
 115         DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_FENCE_UNREF,         \
 116                  struct drm_vmw_fence_arg)
 117 #define DRM_IOCTL_VMW_FENCE_EVENT                               \
 118         DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_FENCE_EVENT,         \
 119                  struct drm_vmw_fence_event_arg)
 120 #define DRM_IOCTL_VMW_PRESENT                                   \
 121         DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_PRESENT,             \
 122                  struct drm_vmw_present_arg)
 123 #define DRM_IOCTL_VMW_PRESENT_READBACK                          \
 124         DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_PRESENT_READBACK,    \
 125                  struct drm_vmw_present_readback_arg)
 126 #define DRM_IOCTL_VMW_UPDATE_LAYOUT                             \
 127         DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UPDATE_LAYOUT,       \
 128                  struct drm_vmw_update_layout_arg)
 129 #define DRM_IOCTL_VMW_CREATE_SHADER                             \
 130         DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_CREATE_SHADER,      \
 131                  struct drm_vmw_shader_create_arg)
 132 #define DRM_IOCTL_VMW_UNREF_SHADER                              \
 133         DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_SHADER,        \
 134                  struct drm_vmw_shader_arg)
 135 #define DRM_IOCTL_VMW_GB_SURFACE_CREATE                         \
 136         DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_GB_SURFACE_CREATE,  \
 137                  union drm_vmw_gb_surface_create_arg)
 138 #define DRM_IOCTL_VMW_GB_SURFACE_REF                            \
 139         DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_GB_SURFACE_REF,     \
 140                  union drm_vmw_gb_surface_reference_arg)
 141 #define DRM_IOCTL_VMW_SYNCCPU                                   \
 142         DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_SYNCCPU,             \
 143                  struct drm_vmw_synccpu_arg)
 144 #define DRM_IOCTL_VMW_CREATE_EXTENDED_CONTEXT                   \
 145         DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_CREATE_EXTENDED_CONTEXT,    \
 146                 struct drm_vmw_context_arg)
 147 #define DRM_IOCTL_VMW_GB_SURFACE_CREATE_EXT                             \
 148         DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_GB_SURFACE_CREATE_EXT,      \
 149                 union drm_vmw_gb_surface_create_ext_arg)
 150 #define DRM_IOCTL_VMW_GB_SURFACE_REF_EXT                                \
 151         DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_GB_SURFACE_REF_EXT,         \
 152                 union drm_vmw_gb_surface_reference_ext_arg)
 153 
 154 /**
 155  * The core DRM version of this macro doesn't account for
 156  * DRM_COMMAND_BASE.
 157  */
 158 
 159 #define VMW_IOCTL_DEF(ioctl, func, flags) \
 160   [DRM_IOCTL_NR(DRM_IOCTL_##ioctl) - DRM_COMMAND_BASE] = {DRM_IOCTL_##ioctl, flags, func}
 161 
 162 /**
 163  * Ioctl definitions.
 164  */
 165 
 166 static const struct drm_ioctl_desc vmw_ioctls[] = {
 167         VMW_IOCTL_DEF(VMW_GET_PARAM, vmw_getparam_ioctl,
 168                       DRM_AUTH | DRM_RENDER_ALLOW),
 169         VMW_IOCTL_DEF(VMW_ALLOC_DMABUF, vmw_bo_alloc_ioctl,
 170                       DRM_AUTH | DRM_RENDER_ALLOW),
 171         VMW_IOCTL_DEF(VMW_UNREF_DMABUF, vmw_bo_unref_ioctl,
 172                       DRM_RENDER_ALLOW),
 173         VMW_IOCTL_DEF(VMW_CURSOR_BYPASS,
 174                       vmw_kms_cursor_bypass_ioctl,
 175                       DRM_MASTER),
 176 
 177         VMW_IOCTL_DEF(VMW_CONTROL_STREAM, vmw_overlay_ioctl,
 178                       DRM_MASTER),
 179         VMW_IOCTL_DEF(VMW_CLAIM_STREAM, vmw_stream_claim_ioctl,
 180                       DRM_MASTER),
 181         VMW_IOCTL_DEF(VMW_UNREF_STREAM, vmw_stream_unref_ioctl,
 182                       DRM_MASTER),
 183 
 184         VMW_IOCTL_DEF(VMW_CREATE_CONTEXT, vmw_context_define_ioctl,
 185                       DRM_AUTH | DRM_RENDER_ALLOW),
 186         VMW_IOCTL_DEF(VMW_UNREF_CONTEXT, vmw_context_destroy_ioctl,
 187                       DRM_RENDER_ALLOW),
 188         VMW_IOCTL_DEF(VMW_CREATE_SURFACE, vmw_surface_define_ioctl,
 189                       DRM_AUTH | DRM_RENDER_ALLOW),
 190         VMW_IOCTL_DEF(VMW_UNREF_SURFACE, vmw_surface_destroy_ioctl,
 191                       DRM_RENDER_ALLOW),
 192         VMW_IOCTL_DEF(VMW_REF_SURFACE, vmw_surface_reference_ioctl,
 193                       DRM_AUTH | DRM_RENDER_ALLOW),
 194         VMW_IOCTL_DEF(VMW_EXECBUF, vmw_execbuf_ioctl, DRM_AUTH |
 195                       DRM_RENDER_ALLOW),
 196         VMW_IOCTL_DEF(VMW_FENCE_WAIT, vmw_fence_obj_wait_ioctl,
 197                       DRM_RENDER_ALLOW),
 198         VMW_IOCTL_DEF(VMW_FENCE_SIGNALED,
 199                       vmw_fence_obj_signaled_ioctl,
 200                       DRM_RENDER_ALLOW),
 201         VMW_IOCTL_DEF(VMW_FENCE_UNREF, vmw_fence_obj_unref_ioctl,
 202                       DRM_RENDER_ALLOW),
 203         VMW_IOCTL_DEF(VMW_FENCE_EVENT, vmw_fence_event_ioctl,
 204                       DRM_AUTH | DRM_RENDER_ALLOW),
 205         VMW_IOCTL_DEF(VMW_GET_3D_CAP, vmw_get_cap_3d_ioctl,
 206                       DRM_AUTH | DRM_RENDER_ALLOW),
 207 
 208         /* these allow direct access to the framebuffers mark as master only */
 209         VMW_IOCTL_DEF(VMW_PRESENT, vmw_present_ioctl,
 210                       DRM_MASTER | DRM_AUTH),
 211         VMW_IOCTL_DEF(VMW_PRESENT_READBACK,
 212                       vmw_present_readback_ioctl,
 213                       DRM_MASTER | DRM_AUTH),
 214         /*
 215          * The permissions of the below ioctl are overridden in
 216          * vmw_generic_ioctl(). We require either
 217          * DRM_MASTER or capable(CAP_SYS_ADMIN).
 218          */
 219         VMW_IOCTL_DEF(VMW_UPDATE_LAYOUT,
 220                       vmw_kms_update_layout_ioctl,
 221                       DRM_RENDER_ALLOW),
 222         VMW_IOCTL_DEF(VMW_CREATE_SHADER,
 223                       vmw_shader_define_ioctl,
 224                       DRM_AUTH | DRM_RENDER_ALLOW),
 225         VMW_IOCTL_DEF(VMW_UNREF_SHADER,
 226                       vmw_shader_destroy_ioctl,
 227                       DRM_RENDER_ALLOW),
 228         VMW_IOCTL_DEF(VMW_GB_SURFACE_CREATE,
 229                       vmw_gb_surface_define_ioctl,
 230                       DRM_AUTH | DRM_RENDER_ALLOW),
 231         VMW_IOCTL_DEF(VMW_GB_SURFACE_REF,
 232                       vmw_gb_surface_reference_ioctl,
 233                       DRM_AUTH | DRM_RENDER_ALLOW),
 234         VMW_IOCTL_DEF(VMW_SYNCCPU,
 235                       vmw_user_bo_synccpu_ioctl,
 236                       DRM_RENDER_ALLOW),
 237         VMW_IOCTL_DEF(VMW_CREATE_EXTENDED_CONTEXT,
 238                       vmw_extended_context_define_ioctl,
 239                       DRM_AUTH | DRM_RENDER_ALLOW),
 240         VMW_IOCTL_DEF(VMW_GB_SURFACE_CREATE_EXT,
 241                       vmw_gb_surface_define_ext_ioctl,
 242                       DRM_AUTH | DRM_RENDER_ALLOW),
 243         VMW_IOCTL_DEF(VMW_GB_SURFACE_REF_EXT,
 244                       vmw_gb_surface_reference_ext_ioctl,
 245                       DRM_AUTH | DRM_RENDER_ALLOW),
 246 };
 247 
 248 static const struct pci_device_id vmw_pci_id_list[] = {
 249         {0x15ad, 0x0405, PCI_ANY_ID, PCI_ANY_ID, 0, 0, VMWGFX_CHIP_SVGAII},
 250         {0, 0, 0}
 251 };
 252 MODULE_DEVICE_TABLE(pci, vmw_pci_id_list);
 253 
 254 static int enable_fbdev = IS_ENABLED(CONFIG_DRM_VMWGFX_FBCON);
 255 static int vmw_force_iommu;
 256 static int vmw_restrict_iommu;
 257 static int vmw_force_coherent;
 258 static int vmw_restrict_dma_mask;
 259 static int vmw_assume_16bpp;
 260 
 261 static int vmw_probe(struct pci_dev *, const struct pci_device_id *);
 262 static int vmwgfx_pm_notifier(struct notifier_block *nb, unsigned long val,
 263                               void *ptr);
 264 
 265 MODULE_PARM_DESC(enable_fbdev, "Enable vmwgfx fbdev");
 266 module_param_named(enable_fbdev, enable_fbdev, int, 0600);
 267 MODULE_PARM_DESC(force_dma_api, "Force using the DMA API for TTM pages");
 268 module_param_named(force_dma_api, vmw_force_iommu, int, 0600);
 269 MODULE_PARM_DESC(restrict_iommu, "Try to limit IOMMU usage for TTM pages");
 270 module_param_named(restrict_iommu, vmw_restrict_iommu, int, 0600);
 271 MODULE_PARM_DESC(force_coherent, "Force coherent TTM pages");
 272 module_param_named(force_coherent, vmw_force_coherent, int, 0600);
 273 MODULE_PARM_DESC(restrict_dma_mask, "Restrict DMA mask to 44 bits with IOMMU");
 274 module_param_named(restrict_dma_mask, vmw_restrict_dma_mask, int, 0600);
 275 MODULE_PARM_DESC(assume_16bpp, "Assume 16-bpp when filtering modes");
 276 module_param_named(assume_16bpp, vmw_assume_16bpp, int, 0600);
 277 
 278 
 279 static void vmw_print_capabilities2(uint32_t capabilities2)
 280 {
 281         DRM_INFO("Capabilities2:\n");
 282         if (capabilities2 & SVGA_CAP2_GROW_OTABLE)
 283                 DRM_INFO("  Grow oTable.\n");
 284         if (capabilities2 & SVGA_CAP2_INTRA_SURFACE_COPY)
 285                 DRM_INFO("  IntraSurface copy.\n");
 286 }
 287 
 288 static void vmw_print_capabilities(uint32_t capabilities)
 289 {
 290         DRM_INFO("Capabilities:\n");
 291         if (capabilities & SVGA_CAP_RECT_COPY)
 292                 DRM_INFO("  Rect copy.\n");
 293         if (capabilities & SVGA_CAP_CURSOR)
 294                 DRM_INFO("  Cursor.\n");
 295         if (capabilities & SVGA_CAP_CURSOR_BYPASS)
 296                 DRM_INFO("  Cursor bypass.\n");
 297         if (capabilities & SVGA_CAP_CURSOR_BYPASS_2)
 298                 DRM_INFO("  Cursor bypass 2.\n");
 299         if (capabilities & SVGA_CAP_8BIT_EMULATION)
 300                 DRM_INFO("  8bit emulation.\n");
 301         if (capabilities & SVGA_CAP_ALPHA_CURSOR)
 302                 DRM_INFO("  Alpha cursor.\n");
 303         if (capabilities & SVGA_CAP_3D)
 304                 DRM_INFO("  3D.\n");
 305         if (capabilities & SVGA_CAP_EXTENDED_FIFO)
 306                 DRM_INFO("  Extended Fifo.\n");
 307         if (capabilities & SVGA_CAP_MULTIMON)
 308                 DRM_INFO("  Multimon.\n");
 309         if (capabilities & SVGA_CAP_PITCHLOCK)
 310                 DRM_INFO("  Pitchlock.\n");
 311         if (capabilities & SVGA_CAP_IRQMASK)
 312                 DRM_INFO("  Irq mask.\n");
 313         if (capabilities & SVGA_CAP_DISPLAY_TOPOLOGY)
 314                 DRM_INFO("  Display Topology.\n");
 315         if (capabilities & SVGA_CAP_GMR)
 316                 DRM_INFO("  GMR.\n");
 317         if (capabilities & SVGA_CAP_TRACES)
 318                 DRM_INFO("  Traces.\n");
 319         if (capabilities & SVGA_CAP_GMR2)
 320                 DRM_INFO("  GMR2.\n");
 321         if (capabilities & SVGA_CAP_SCREEN_OBJECT_2)
 322                 DRM_INFO("  Screen Object 2.\n");
 323         if (capabilities & SVGA_CAP_COMMAND_BUFFERS)
 324                 DRM_INFO("  Command Buffers.\n");
 325         if (capabilities & SVGA_CAP_CMD_BUFFERS_2)
 326                 DRM_INFO("  Command Buffers 2.\n");
 327         if (capabilities & SVGA_CAP_GBOBJECTS)
 328                 DRM_INFO("  Guest Backed Resources.\n");
 329         if (capabilities & SVGA_CAP_DX)
 330                 DRM_INFO("  DX Features.\n");
 331         if (capabilities & SVGA_CAP_HP_CMD_QUEUE)
 332                 DRM_INFO("  HP Command Queue.\n");
 333 }
 334 
 335 /**
 336  * vmw_dummy_query_bo_create - create a bo to hold a dummy query result
 337  *
 338  * @dev_priv: A device private structure.
 339  *
 340  * This function creates a small buffer object that holds the query
 341  * result for dummy queries emitted as query barriers.
 342  * The function will then map the first page and initialize a pending
 343  * occlusion query result structure, Finally it will unmap the buffer.
 344  * No interruptible waits are done within this function.
 345  *
 346  * Returns an error if bo creation or initialization fails.
 347  */
 348 static int vmw_dummy_query_bo_create(struct vmw_private *dev_priv)
 349 {
 350         int ret;
 351         struct vmw_buffer_object *vbo;
 352         struct ttm_bo_kmap_obj map;
 353         volatile SVGA3dQueryResult *result;
 354         bool dummy;
 355 
 356         /*
 357          * Create the vbo as pinned, so that a tryreserve will
 358          * immediately succeed. This is because we're the only
 359          * user of the bo currently.
 360          */
 361         vbo = kzalloc(sizeof(*vbo), GFP_KERNEL);
 362         if (!vbo)
 363                 return -ENOMEM;
 364 
 365         ret = vmw_bo_init(dev_priv, vbo, PAGE_SIZE,
 366                           &vmw_sys_ne_placement, false,
 367                           &vmw_bo_bo_free);
 368         if (unlikely(ret != 0))
 369                 return ret;
 370 
 371         ret = ttm_bo_reserve(&vbo->base, false, true, NULL);
 372         BUG_ON(ret != 0);
 373         vmw_bo_pin_reserved(vbo, true);
 374 
 375         ret = ttm_bo_kmap(&vbo->base, 0, 1, &map);
 376         if (likely(ret == 0)) {
 377                 result = ttm_kmap_obj_virtual(&map, &dummy);
 378                 result->totalSize = sizeof(*result);
 379                 result->state = SVGA3D_QUERYSTATE_PENDING;
 380                 result->result32 = 0xff;
 381                 ttm_bo_kunmap(&map);
 382         }
 383         vmw_bo_pin_reserved(vbo, false);
 384         ttm_bo_unreserve(&vbo->base);
 385 
 386         if (unlikely(ret != 0)) {
 387                 DRM_ERROR("Dummy query buffer map failed.\n");
 388                 vmw_bo_unreference(&vbo);
 389         } else
 390                 dev_priv->dummy_query_bo = vbo;
 391 
 392         return ret;
 393 }
 394 
 395 /**
 396  * vmw_request_device_late - Perform late device setup
 397  *
 398  * @dev_priv: Pointer to device private.
 399  *
 400  * This function performs setup of otables and enables large command
 401  * buffer submission. These tasks are split out to a separate function
 402  * because it reverts vmw_release_device_early and is intended to be used
 403  * by an error path in the hibernation code.
 404  */
 405 static int vmw_request_device_late(struct vmw_private *dev_priv)
 406 {
 407         int ret;
 408 
 409         if (dev_priv->has_mob) {
 410                 ret = vmw_otables_setup(dev_priv);
 411                 if (unlikely(ret != 0)) {
 412                         DRM_ERROR("Unable to initialize "
 413                                   "guest Memory OBjects.\n");
 414                         return ret;
 415                 }
 416         }
 417 
 418         if (dev_priv->cman) {
 419                 ret = vmw_cmdbuf_set_pool_size(dev_priv->cman,
 420                                                256*4096, 2*4096);
 421                 if (ret) {
 422                         struct vmw_cmdbuf_man *man = dev_priv->cman;
 423 
 424                         dev_priv->cman = NULL;
 425                         vmw_cmdbuf_man_destroy(man);
 426                 }
 427         }
 428 
 429         return 0;
 430 }
 431 
 432 static int vmw_request_device(struct vmw_private *dev_priv)
 433 {
 434         int ret;
 435 
 436         ret = vmw_fifo_init(dev_priv, &dev_priv->fifo);
 437         if (unlikely(ret != 0)) {
 438                 DRM_ERROR("Unable to initialize FIFO.\n");
 439                 return ret;
 440         }
 441         vmw_fence_fifo_up(dev_priv->fman);
 442         dev_priv->cman = vmw_cmdbuf_man_create(dev_priv);
 443         if (IS_ERR(dev_priv->cman)) {
 444                 dev_priv->cman = NULL;
 445                 dev_priv->has_dx = false;
 446         }
 447 
 448         ret = vmw_request_device_late(dev_priv);
 449         if (ret)
 450                 goto out_no_mob;
 451 
 452         ret = vmw_dummy_query_bo_create(dev_priv);
 453         if (unlikely(ret != 0))
 454                 goto out_no_query_bo;
 455 
 456         return 0;
 457 
 458 out_no_query_bo:
 459         if (dev_priv->cman)
 460                 vmw_cmdbuf_remove_pool(dev_priv->cman);
 461         if (dev_priv->has_mob) {
 462                 (void) ttm_bo_evict_mm(&dev_priv->bdev, VMW_PL_MOB);
 463                 vmw_otables_takedown(dev_priv);
 464         }
 465         if (dev_priv->cman)
 466                 vmw_cmdbuf_man_destroy(dev_priv->cman);
 467 out_no_mob:
 468         vmw_fence_fifo_down(dev_priv->fman);
 469         vmw_fifo_release(dev_priv, &dev_priv->fifo);
 470         return ret;
 471 }
 472 
 473 /**
 474  * vmw_release_device_early - Early part of fifo takedown.
 475  *
 476  * @dev_priv: Pointer to device private struct.
 477  *
 478  * This is the first part of command submission takedown, to be called before
 479  * buffer management is taken down.
 480  */
 481 static void vmw_release_device_early(struct vmw_private *dev_priv)
 482 {
 483         /*
 484          * Previous destructions should've released
 485          * the pinned bo.
 486          */
 487 
 488         BUG_ON(dev_priv->pinned_bo != NULL);
 489 
 490         vmw_bo_unreference(&dev_priv->dummy_query_bo);
 491         if (dev_priv->cman)
 492                 vmw_cmdbuf_remove_pool(dev_priv->cman);
 493 
 494         if (dev_priv->has_mob) {
 495                 ttm_bo_evict_mm(&dev_priv->bdev, VMW_PL_MOB);
 496                 vmw_otables_takedown(dev_priv);
 497         }
 498 }
 499 
 500 /**
 501  * vmw_release_device_late - Late part of fifo takedown.
 502  *
 503  * @dev_priv: Pointer to device private struct.
 504  *
 505  * This is the last part of the command submission takedown, to be called when
 506  * command submission is no longer needed. It may wait on pending fences.
 507  */
 508 static void vmw_release_device_late(struct vmw_private *dev_priv)
 509 {
 510         vmw_fence_fifo_down(dev_priv->fman);
 511         if (dev_priv->cman)
 512                 vmw_cmdbuf_man_destroy(dev_priv->cman);
 513 
 514         vmw_fifo_release(dev_priv, &dev_priv->fifo);
 515 }
 516 
 517 /**
 518  * Sets the initial_[width|height] fields on the given vmw_private.
 519  *
 520  * It does so by reading SVGA_REG_[WIDTH|HEIGHT] regs and then
 521  * clamping the value to fb_max_[width|height] fields and the
 522  * VMW_MIN_INITIAL_[WIDTH|HEIGHT].
 523  * If the values appear to be invalid, set them to
 524  * VMW_MIN_INITIAL_[WIDTH|HEIGHT].
 525  */
 526 static void vmw_get_initial_size(struct vmw_private *dev_priv)
 527 {
 528         uint32_t width;
 529         uint32_t height;
 530 
 531         width = vmw_read(dev_priv, SVGA_REG_WIDTH);
 532         height = vmw_read(dev_priv, SVGA_REG_HEIGHT);
 533 
 534         width = max_t(uint32_t, width, VMW_MIN_INITIAL_WIDTH);
 535         height = max_t(uint32_t, height, VMW_MIN_INITIAL_HEIGHT);
 536 
 537         if (width > dev_priv->fb_max_width ||
 538             height > dev_priv->fb_max_height) {
 539 
 540                 /*
 541                  * This is a host error and shouldn't occur.
 542                  */
 543 
 544                 width = VMW_MIN_INITIAL_WIDTH;
 545                 height = VMW_MIN_INITIAL_HEIGHT;
 546         }
 547 
 548         dev_priv->initial_width = width;
 549         dev_priv->initial_height = height;
 550 }
 551 
 552 /**
 553  * vmw_dma_select_mode - Determine how DMA mappings should be set up for this
 554  * system.
 555  *
 556  * @dev_priv: Pointer to a struct vmw_private
 557  *
 558  * This functions tries to determine what actions need to be taken by the
 559  * driver to make system pages visible to the device.
 560  * If this function decides that DMA is not possible, it returns -EINVAL.
 561  * The driver may then try to disable features of the device that require
 562  * DMA.
 563  */
 564 static int vmw_dma_select_mode(struct vmw_private *dev_priv)
 565 {
 566         static const char *names[vmw_dma_map_max] = {
 567                 [vmw_dma_phys] = "Using physical TTM page addresses.",
 568                 [vmw_dma_alloc_coherent] = "Using coherent TTM pages.",
 569                 [vmw_dma_map_populate] = "Caching DMA mappings.",
 570                 [vmw_dma_map_bind] = "Giving up DMA mappings early."};
 571 
 572         if (vmw_force_coherent)
 573                 dev_priv->map_mode = vmw_dma_alloc_coherent;
 574         else if (vmw_restrict_iommu)
 575                 dev_priv->map_mode = vmw_dma_map_bind;
 576         else
 577                 dev_priv->map_mode = vmw_dma_map_populate;
 578 
 579         /* No TTM coherent page pool? FIXME: Ask TTM instead! */
 580         if (!(IS_ENABLED(CONFIG_SWIOTLB) || IS_ENABLED(CONFIG_INTEL_IOMMU)) &&
 581             (dev_priv->map_mode == vmw_dma_alloc_coherent))
 582                 return -EINVAL;
 583 
 584         DRM_INFO("DMA map mode: %s\n", names[dev_priv->map_mode]);
 585         return 0;
 586 }
 587 
 588 /**
 589  * vmw_dma_masks - set required page- and dma masks
 590  *
 591  * @dev: Pointer to struct drm-device
 592  *
 593  * With 32-bit we can only handle 32 bit PFNs. Optionally set that
 594  * restriction also for 64-bit systems.
 595  */
 596 static int vmw_dma_masks(struct vmw_private *dev_priv)
 597 {
 598         struct drm_device *dev = dev_priv->dev;
 599         int ret = 0;
 600 
 601         ret = dma_set_mask_and_coherent(dev->dev, DMA_BIT_MASK(64));
 602         if (dev_priv->map_mode != vmw_dma_phys &&
 603             (sizeof(unsigned long) == 4 || vmw_restrict_dma_mask)) {
 604                 DRM_INFO("Restricting DMA addresses to 44 bits.\n");
 605                 return dma_set_mask_and_coherent(dev->dev, DMA_BIT_MASK(44));
 606         }
 607 
 608         return ret;
 609 }
 610 
 611 static int vmw_driver_load(struct drm_device *dev, unsigned long chipset)
 612 {
 613         struct vmw_private *dev_priv;
 614         int ret;
 615         uint32_t svga_id;
 616         enum vmw_res_type i;
 617         bool refuse_dma = false;
 618         char host_log[100] = {0};
 619 
 620         dev_priv = kzalloc(sizeof(*dev_priv), GFP_KERNEL);
 621         if (unlikely(!dev_priv)) {
 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         mutex_init(&dev_priv->global_kms_state_mutex);
 635         ttm_lock_init(&dev_priv->reservation_sem);
 636         spin_lock_init(&dev_priv->resource_lock);
 637         spin_lock_init(&dev_priv->hw_lock);
 638         spin_lock_init(&dev_priv->waiter_lock);
 639         spin_lock_init(&dev_priv->cap_lock);
 640         spin_lock_init(&dev_priv->svga_lock);
 641         spin_lock_init(&dev_priv->cursor_lock);
 642 
 643         for (i = vmw_res_context; i < vmw_res_max; ++i) {
 644                 idr_init(&dev_priv->res_idr[i]);
 645                 INIT_LIST_HEAD(&dev_priv->res_lru[i]);
 646         }
 647 
 648         init_waitqueue_head(&dev_priv->fence_queue);
 649         init_waitqueue_head(&dev_priv->fifo_queue);
 650         dev_priv->fence_queue_waiters = 0;
 651         dev_priv->fifo_queue_waiters = 0;
 652 
 653         dev_priv->used_memory_size = 0;
 654 
 655         dev_priv->io_start = pci_resource_start(dev->pdev, 0);
 656         dev_priv->vram_start = pci_resource_start(dev->pdev, 1);
 657         dev_priv->mmio_start = pci_resource_start(dev->pdev, 2);
 658 
 659         dev_priv->assume_16bpp = !!vmw_assume_16bpp;
 660 
 661         dev_priv->enable_fb = enable_fbdev;
 662 
 663         vmw_write(dev_priv, SVGA_REG_ID, SVGA_ID_2);
 664         svga_id = vmw_read(dev_priv, SVGA_REG_ID);
 665         if (svga_id != SVGA_ID_2) {
 666                 ret = -ENOSYS;
 667                 DRM_ERROR("Unsupported SVGA ID 0x%x\n", svga_id);
 668                 goto out_err0;
 669         }
 670 
 671         dev_priv->capabilities = vmw_read(dev_priv, SVGA_REG_CAPABILITIES);
 672 
 673         if (dev_priv->capabilities & SVGA_CAP_CAP2_REGISTER) {
 674                 dev_priv->capabilities2 = vmw_read(dev_priv, SVGA_REG_CAP2);
 675         }
 676 
 677 
 678         ret = vmw_dma_select_mode(dev_priv);
 679         if (unlikely(ret != 0)) {
 680                 DRM_INFO("Restricting capabilities due to IOMMU setup.\n");
 681                 refuse_dma = true;
 682         }
 683 
 684         dev_priv->vram_size = vmw_read(dev_priv, SVGA_REG_VRAM_SIZE);
 685         dev_priv->mmio_size = vmw_read(dev_priv, SVGA_REG_MEM_SIZE);
 686         dev_priv->fb_max_width = vmw_read(dev_priv, SVGA_REG_MAX_WIDTH);
 687         dev_priv->fb_max_height = vmw_read(dev_priv, SVGA_REG_MAX_HEIGHT);
 688 
 689         vmw_get_initial_size(dev_priv);
 690 
 691         if (dev_priv->capabilities & SVGA_CAP_GMR2) {
 692                 dev_priv->max_gmr_ids =
 693                         vmw_read(dev_priv, SVGA_REG_GMR_MAX_IDS);
 694                 dev_priv->max_gmr_pages =
 695                         vmw_read(dev_priv, SVGA_REG_GMRS_MAX_PAGES);
 696                 dev_priv->memory_size =
 697                         vmw_read(dev_priv, SVGA_REG_MEMORY_SIZE);
 698                 dev_priv->memory_size -= dev_priv->vram_size;
 699         } else {
 700                 /*
 701                  * An arbitrary limit of 512MiB on surface
 702                  * memory. But all HWV8 hardware supports GMR2.
 703                  */
 704                 dev_priv->memory_size = 512*1024*1024;
 705         }
 706         dev_priv->max_mob_pages = 0;
 707         dev_priv->max_mob_size = 0;
 708         if (dev_priv->capabilities & SVGA_CAP_GBOBJECTS) {
 709                 uint64_t mem_size =
 710                         vmw_read(dev_priv,
 711                                  SVGA_REG_SUGGESTED_GBOBJECT_MEM_SIZE_KB);
 712 
 713                 /*
 714                  * Workaround for low memory 2D VMs to compensate for the
 715                  * allocation taken by fbdev
 716                  */
 717                 if (!(dev_priv->capabilities & SVGA_CAP_3D))
 718                         mem_size *= 3;
 719 
 720                 dev_priv->max_mob_pages = mem_size * 1024 / PAGE_SIZE;
 721                 dev_priv->prim_bb_mem =
 722                         vmw_read(dev_priv,
 723                                  SVGA_REG_MAX_PRIMARY_BOUNDING_BOX_MEM);
 724                 dev_priv->max_mob_size =
 725                         vmw_read(dev_priv, SVGA_REG_MOB_MAX_SIZE);
 726                 dev_priv->stdu_max_width =
 727                         vmw_read(dev_priv, SVGA_REG_SCREENTARGET_MAX_WIDTH);
 728                 dev_priv->stdu_max_height =
 729                         vmw_read(dev_priv, SVGA_REG_SCREENTARGET_MAX_HEIGHT);
 730 
 731                 vmw_write(dev_priv, SVGA_REG_DEV_CAP,
 732                           SVGA3D_DEVCAP_MAX_TEXTURE_WIDTH);
 733                 dev_priv->texture_max_width = vmw_read(dev_priv,
 734                                                        SVGA_REG_DEV_CAP);
 735                 vmw_write(dev_priv, SVGA_REG_DEV_CAP,
 736                           SVGA3D_DEVCAP_MAX_TEXTURE_HEIGHT);
 737                 dev_priv->texture_max_height = vmw_read(dev_priv,
 738                                                         SVGA_REG_DEV_CAP);
 739         } else {
 740                 dev_priv->texture_max_width = 8192;
 741                 dev_priv->texture_max_height = 8192;
 742                 dev_priv->prim_bb_mem = dev_priv->vram_size;
 743         }
 744 
 745         vmw_print_capabilities(dev_priv->capabilities);
 746         if (dev_priv->capabilities & SVGA_CAP_CAP2_REGISTER)
 747                 vmw_print_capabilities2(dev_priv->capabilities2);
 748 
 749         ret = vmw_dma_masks(dev_priv);
 750         if (unlikely(ret != 0))
 751                 goto out_err0;
 752 
 753         dma_set_max_seg_size(dev->dev, min_t(unsigned int, U32_MAX & PAGE_MASK,
 754                                              SCATTERLIST_MAX_SEGMENT));
 755 
 756         if (dev_priv->capabilities & SVGA_CAP_GMR2) {
 757                 DRM_INFO("Max GMR ids is %u\n",
 758                          (unsigned)dev_priv->max_gmr_ids);
 759                 DRM_INFO("Max number of GMR pages is %u\n",
 760                          (unsigned)dev_priv->max_gmr_pages);
 761                 DRM_INFO("Max dedicated hypervisor surface memory is %u kiB\n",
 762                          (unsigned)dev_priv->memory_size / 1024);
 763         }
 764         DRM_INFO("Maximum display memory size is %u kiB\n",
 765                  dev_priv->prim_bb_mem / 1024);
 766         DRM_INFO("VRAM at 0x%08x size is %u kiB\n",
 767                  dev_priv->vram_start, dev_priv->vram_size / 1024);
 768         DRM_INFO("MMIO at 0x%08x size is %u kiB\n",
 769                  dev_priv->mmio_start, dev_priv->mmio_size / 1024);
 770 
 771         dev_priv->mmio_virt = memremap(dev_priv->mmio_start,
 772                                        dev_priv->mmio_size, MEMREMAP_WB);
 773 
 774         if (unlikely(dev_priv->mmio_virt == NULL)) {
 775                 ret = -ENOMEM;
 776                 DRM_ERROR("Failed mapping MMIO.\n");
 777                 goto out_err0;
 778         }
 779 
 780         /* Need mmio memory to check for fifo pitchlock cap. */
 781         if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY) &&
 782             !(dev_priv->capabilities & SVGA_CAP_PITCHLOCK) &&
 783             !vmw_fifo_have_pitchlock(dev_priv)) {
 784                 ret = -ENOSYS;
 785                 DRM_ERROR("Hardware has no pitchlock\n");
 786                 goto out_err4;
 787         }
 788 
 789         dev_priv->tdev = ttm_object_device_init(&ttm_mem_glob, 12,
 790                                                 &vmw_prime_dmabuf_ops);
 791 
 792         if (unlikely(dev_priv->tdev == NULL)) {
 793                 DRM_ERROR("Unable to initialize TTM object management.\n");
 794                 ret = -ENOMEM;
 795                 goto out_err4;
 796         }
 797 
 798         dev->dev_private = dev_priv;
 799 
 800         ret = pci_request_regions(dev->pdev, "vmwgfx probe");
 801         dev_priv->stealth = (ret != 0);
 802         if (dev_priv->stealth) {
 803                 /**
 804                  * Request at least the mmio PCI resource.
 805                  */
 806 
 807                 DRM_INFO("It appears like vesafb is loaded. "
 808                          "Ignore above error if any.\n");
 809                 ret = pci_request_region(dev->pdev, 2, "vmwgfx stealth probe");
 810                 if (unlikely(ret != 0)) {
 811                         DRM_ERROR("Failed reserving the SVGA MMIO resource.\n");
 812                         goto out_no_device;
 813                 }
 814         }
 815 
 816         if (dev_priv->capabilities & SVGA_CAP_IRQMASK) {
 817                 ret = vmw_irq_install(dev, dev->pdev->irq);
 818                 if (ret != 0) {
 819                         DRM_ERROR("Failed installing irq: %d\n", ret);
 820                         goto out_no_irq;
 821                 }
 822         }
 823 
 824         dev_priv->fman = vmw_fence_manager_init(dev_priv);
 825         if (unlikely(dev_priv->fman == NULL)) {
 826                 ret = -ENOMEM;
 827                 goto out_no_fman;
 828         }
 829 
 830         ret = ttm_bo_device_init(&dev_priv->bdev,
 831                                  &vmw_bo_driver,
 832                                  dev->anon_inode->i_mapping,
 833                                  false);
 834         if (unlikely(ret != 0)) {
 835                 DRM_ERROR("Failed initializing TTM buffer object driver.\n");
 836                 goto out_no_bdev;
 837         }
 838 
 839         /*
 840          * Enable VRAM, but initially don't use it until SVGA is enabled and
 841          * unhidden.
 842          */
 843         ret = ttm_bo_init_mm(&dev_priv->bdev, TTM_PL_VRAM,
 844                              (dev_priv->vram_size >> PAGE_SHIFT));
 845         if (unlikely(ret != 0)) {
 846                 DRM_ERROR("Failed initializing memory manager for VRAM.\n");
 847                 goto out_no_vram;
 848         }
 849         dev_priv->bdev.man[TTM_PL_VRAM].use_type = false;
 850 
 851         dev_priv->has_gmr = true;
 852         if (((dev_priv->capabilities & (SVGA_CAP_GMR | SVGA_CAP_GMR2)) == 0) ||
 853             refuse_dma || ttm_bo_init_mm(&dev_priv->bdev, VMW_PL_GMR,
 854                                          VMW_PL_GMR) != 0) {
 855                 DRM_INFO("No GMR memory available. "
 856                          "Graphics memory resources are very limited.\n");
 857                 dev_priv->has_gmr = false;
 858         }
 859 
 860         if (dev_priv->capabilities & SVGA_CAP_GBOBJECTS) {
 861                 dev_priv->has_mob = true;
 862                 if (ttm_bo_init_mm(&dev_priv->bdev, VMW_PL_MOB,
 863                                    VMW_PL_MOB) != 0) {
 864                         DRM_INFO("No MOB memory available. "
 865                                  "3D will be disabled.\n");
 866                         dev_priv->has_mob = false;
 867                 }
 868         }
 869 
 870         if (dev_priv->has_mob) {
 871                 spin_lock(&dev_priv->cap_lock);
 872                 vmw_write(dev_priv, SVGA_REG_DEV_CAP, SVGA3D_DEVCAP_DXCONTEXT);
 873                 dev_priv->has_dx = !!vmw_read(dev_priv, SVGA_REG_DEV_CAP);
 874                 spin_unlock(&dev_priv->cap_lock);
 875         }
 876 
 877         vmw_validation_mem_init_ttm(dev_priv, VMWGFX_VALIDATION_MEM_GRAN);
 878         ret = vmw_kms_init(dev_priv);
 879         if (unlikely(ret != 0))
 880                 goto out_no_kms;
 881         vmw_overlay_init(dev_priv);
 882 
 883         ret = vmw_request_device(dev_priv);
 884         if (ret)
 885                 goto out_no_fifo;
 886 
 887         if (dev_priv->has_dx) {
 888                 /*
 889                  * SVGA_CAP2_DX2 (DefineGBSurface_v3) is needed for SM4_1
 890                  * support
 891                  */
 892                 if ((dev_priv->capabilities2 & SVGA_CAP2_DX2) != 0) {
 893                         vmw_write(dev_priv, SVGA_REG_DEV_CAP,
 894                                         SVGA3D_DEVCAP_SM41);
 895                         dev_priv->has_sm4_1 = vmw_read(dev_priv,
 896                                                         SVGA_REG_DEV_CAP);
 897                 }
 898         }
 899 
 900         DRM_INFO("DX: %s\n", dev_priv->has_dx ? "yes." : "no.");
 901         DRM_INFO("Atomic: %s\n", (dev->driver->driver_features & DRIVER_ATOMIC)
 902                  ? "yes." : "no.");
 903         DRM_INFO("SM4_1: %s\n", dev_priv->has_sm4_1 ? "yes." : "no.");
 904 
 905         snprintf(host_log, sizeof(host_log), "vmwgfx: %s-%s",
 906                 VMWGFX_REPO, VMWGFX_GIT_VERSION);
 907         vmw_host_log(host_log);
 908 
 909         memset(host_log, 0, sizeof(host_log));
 910         snprintf(host_log, sizeof(host_log), "vmwgfx: Module Version: %d.%d.%d",
 911                 VMWGFX_DRIVER_MAJOR, VMWGFX_DRIVER_MINOR,
 912                 VMWGFX_DRIVER_PATCHLEVEL);
 913         vmw_host_log(host_log);
 914 
 915         if (dev_priv->enable_fb) {
 916                 vmw_fifo_resource_inc(dev_priv);
 917                 vmw_svga_enable(dev_priv);
 918                 vmw_fb_init(dev_priv);
 919         }
 920 
 921         dev_priv->pm_nb.notifier_call = vmwgfx_pm_notifier;
 922         register_pm_notifier(&dev_priv->pm_nb);
 923 
 924         return 0;
 925 
 926 out_no_fifo:
 927         vmw_overlay_close(dev_priv);
 928         vmw_kms_close(dev_priv);
 929 out_no_kms:
 930         if (dev_priv->has_mob)
 931                 (void) ttm_bo_clean_mm(&dev_priv->bdev, VMW_PL_MOB);
 932         if (dev_priv->has_gmr)
 933                 (void) ttm_bo_clean_mm(&dev_priv->bdev, VMW_PL_GMR);
 934         (void)ttm_bo_clean_mm(&dev_priv->bdev, TTM_PL_VRAM);
 935 out_no_vram:
 936         (void)ttm_bo_device_release(&dev_priv->bdev);
 937 out_no_bdev:
 938         vmw_fence_manager_takedown(dev_priv->fman);
 939 out_no_fman:
 940         if (dev_priv->capabilities & SVGA_CAP_IRQMASK)
 941                 vmw_irq_uninstall(dev_priv->dev);
 942 out_no_irq:
 943         if (dev_priv->stealth)
 944                 pci_release_region(dev->pdev, 2);
 945         else
 946                 pci_release_regions(dev->pdev);
 947 out_no_device:
 948         ttm_object_device_release(&dev_priv->tdev);
 949 out_err4:
 950         memunmap(dev_priv->mmio_virt);
 951 out_err0:
 952         for (i = vmw_res_context; i < vmw_res_max; ++i)
 953                 idr_destroy(&dev_priv->res_idr[i]);
 954 
 955         if (dev_priv->ctx.staged_bindings)
 956                 vmw_binding_state_free(dev_priv->ctx.staged_bindings);
 957         kfree(dev_priv);
 958         return ret;
 959 }
 960 
 961 static void vmw_driver_unload(struct drm_device *dev)
 962 {
 963         struct vmw_private *dev_priv = vmw_priv(dev);
 964         enum vmw_res_type i;
 965 
 966         unregister_pm_notifier(&dev_priv->pm_nb);
 967 
 968         if (dev_priv->ctx.res_ht_initialized)
 969                 drm_ht_remove(&dev_priv->ctx.res_ht);
 970         vfree(dev_priv->ctx.cmd_bounce);
 971         if (dev_priv->enable_fb) {
 972                 vmw_fb_off(dev_priv);
 973                 vmw_fb_close(dev_priv);
 974                 vmw_fifo_resource_dec(dev_priv);
 975                 vmw_svga_disable(dev_priv);
 976         }
 977 
 978         vmw_kms_close(dev_priv);
 979         vmw_overlay_close(dev_priv);
 980 
 981         if (dev_priv->has_gmr)
 982                 (void)ttm_bo_clean_mm(&dev_priv->bdev, VMW_PL_GMR);
 983         (void)ttm_bo_clean_mm(&dev_priv->bdev, TTM_PL_VRAM);
 984 
 985         vmw_release_device_early(dev_priv);
 986         if (dev_priv->has_mob)
 987                 (void) ttm_bo_clean_mm(&dev_priv->bdev, VMW_PL_MOB);
 988         (void) ttm_bo_device_release(&dev_priv->bdev);
 989         vmw_release_device_late(dev_priv);
 990         vmw_fence_manager_takedown(dev_priv->fman);
 991         if (dev_priv->capabilities & SVGA_CAP_IRQMASK)
 992                 vmw_irq_uninstall(dev_priv->dev);
 993         if (dev_priv->stealth)
 994                 pci_release_region(dev->pdev, 2);
 995         else
 996                 pci_release_regions(dev->pdev);
 997 
 998         ttm_object_device_release(&dev_priv->tdev);
 999         memunmap(dev_priv->mmio_virt);
1000         if (dev_priv->ctx.staged_bindings)
1001                 vmw_binding_state_free(dev_priv->ctx.staged_bindings);
1002 
1003         for (i = vmw_res_context; i < vmw_res_max; ++i)
1004                 idr_destroy(&dev_priv->res_idr[i]);
1005 
1006         kfree(dev_priv);
1007 }
1008 
1009 static void vmw_postclose(struct drm_device *dev,
1010                          struct drm_file *file_priv)
1011 {
1012         struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
1013 
1014         ttm_object_file_release(&vmw_fp->tfile);
1015         kfree(vmw_fp);
1016 }
1017 
1018 static int vmw_driver_open(struct drm_device *dev, struct drm_file *file_priv)
1019 {
1020         struct vmw_private *dev_priv = vmw_priv(dev);
1021         struct vmw_fpriv *vmw_fp;
1022         int ret = -ENOMEM;
1023 
1024         vmw_fp = kzalloc(sizeof(*vmw_fp), GFP_KERNEL);
1025         if (unlikely(!vmw_fp))
1026                 return ret;
1027 
1028         vmw_fp->tfile = ttm_object_file_init(dev_priv->tdev, 10);
1029         if (unlikely(vmw_fp->tfile == NULL))
1030                 goto out_no_tfile;
1031 
1032         file_priv->driver_priv = vmw_fp;
1033 
1034         return 0;
1035 
1036 out_no_tfile:
1037         kfree(vmw_fp);
1038         return ret;
1039 }
1040 
1041 static long vmw_generic_ioctl(struct file *filp, unsigned int cmd,
1042                               unsigned long arg,
1043                               long (*ioctl_func)(struct file *, unsigned int,
1044                                                  unsigned long))
1045 {
1046         struct drm_file *file_priv = filp->private_data;
1047         struct drm_device *dev = file_priv->minor->dev;
1048         unsigned int nr = DRM_IOCTL_NR(cmd);
1049         unsigned int flags;
1050 
1051         /*
1052          * Do extra checking on driver private ioctls.
1053          */
1054 
1055         if ((nr >= DRM_COMMAND_BASE) && (nr < DRM_COMMAND_END)
1056             && (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls)) {
1057                 const struct drm_ioctl_desc *ioctl =
1058                         &vmw_ioctls[nr - DRM_COMMAND_BASE];
1059 
1060                 if (nr == DRM_COMMAND_BASE + DRM_VMW_EXECBUF) {
1061                         return ioctl_func(filp, cmd, arg);
1062                 } else if (nr == DRM_COMMAND_BASE + DRM_VMW_UPDATE_LAYOUT) {
1063                         if (!drm_is_current_master(file_priv) &&
1064                             !capable(CAP_SYS_ADMIN))
1065                                 return -EACCES;
1066                 }
1067 
1068                 if (unlikely(ioctl->cmd != cmd))
1069                         goto out_io_encoding;
1070 
1071                 flags = ioctl->flags;
1072         } else if (!drm_ioctl_flags(nr, &flags))
1073                 return -EINVAL;
1074 
1075         return ioctl_func(filp, cmd, arg);
1076 
1077 out_io_encoding:
1078         DRM_ERROR("Invalid command format, ioctl %d\n",
1079                   nr - DRM_COMMAND_BASE);
1080 
1081         return -EINVAL;
1082 }
1083 
1084 static long vmw_unlocked_ioctl(struct file *filp, unsigned int cmd,
1085                                unsigned long arg)
1086 {
1087         return vmw_generic_ioctl(filp, cmd, arg, &drm_ioctl);
1088 }
1089 
1090 #ifdef CONFIG_COMPAT
1091 static long vmw_compat_ioctl(struct file *filp, unsigned int cmd,
1092                              unsigned long arg)
1093 {
1094         return vmw_generic_ioctl(filp, cmd, arg, &drm_compat_ioctl);
1095 }
1096 #endif
1097 
1098 static int vmw_master_set(struct drm_device *dev,
1099                           struct drm_file *file_priv,
1100                           bool from_open)
1101 {
1102         /*
1103          * Inform a new master that the layout may have changed while
1104          * it was gone.
1105          */
1106         if (!from_open)
1107                 drm_sysfs_hotplug_event(dev);
1108 
1109         return 0;
1110 }
1111 
1112 static void vmw_master_drop(struct drm_device *dev,
1113                             struct drm_file *file_priv)
1114 {
1115         struct vmw_private *dev_priv = vmw_priv(dev);
1116 
1117         vmw_kms_legacy_hotspot_clear(dev_priv);
1118         if (!dev_priv->enable_fb)
1119                 vmw_svga_disable(dev_priv);
1120 }
1121 
1122 /**
1123  * __vmw_svga_enable - Enable SVGA mode, FIFO and use of VRAM.
1124  *
1125  * @dev_priv: Pointer to device private struct.
1126  * Needs the reservation sem to be held in non-exclusive mode.
1127  */
1128 static void __vmw_svga_enable(struct vmw_private *dev_priv)
1129 {
1130         spin_lock(&dev_priv->svga_lock);
1131         if (!dev_priv->bdev.man[TTM_PL_VRAM].use_type) {
1132                 vmw_write(dev_priv, SVGA_REG_ENABLE, SVGA_REG_ENABLE);
1133                 dev_priv->bdev.man[TTM_PL_VRAM].use_type = true;
1134         }
1135         spin_unlock(&dev_priv->svga_lock);
1136 }
1137 
1138 /**
1139  * vmw_svga_enable - Enable SVGA mode, FIFO and use of VRAM.
1140  *
1141  * @dev_priv: Pointer to device private struct.
1142  */
1143 void vmw_svga_enable(struct vmw_private *dev_priv)
1144 {
1145         (void) ttm_read_lock(&dev_priv->reservation_sem, false);
1146         __vmw_svga_enable(dev_priv);
1147         ttm_read_unlock(&dev_priv->reservation_sem);
1148 }
1149 
1150 /**
1151  * __vmw_svga_disable - Disable SVGA mode and use of VRAM.
1152  *
1153  * @dev_priv: Pointer to device private struct.
1154  * Needs the reservation sem to be held in exclusive mode.
1155  * Will not empty VRAM. VRAM must be emptied by caller.
1156  */
1157 static void __vmw_svga_disable(struct vmw_private *dev_priv)
1158 {
1159         spin_lock(&dev_priv->svga_lock);
1160         if (dev_priv->bdev.man[TTM_PL_VRAM].use_type) {
1161                 dev_priv->bdev.man[TTM_PL_VRAM].use_type = false;
1162                 vmw_write(dev_priv, SVGA_REG_ENABLE,
1163                           SVGA_REG_ENABLE_HIDE |
1164                           SVGA_REG_ENABLE_ENABLE);
1165         }
1166         spin_unlock(&dev_priv->svga_lock);
1167 }
1168 
1169 /**
1170  * vmw_svga_disable - Disable SVGA_MODE, and use of VRAM. Keep the fifo
1171  * running.
1172  *
1173  * @dev_priv: Pointer to device private struct.
1174  * Will empty VRAM.
1175  */
1176 void vmw_svga_disable(struct vmw_private *dev_priv)
1177 {
1178         /*
1179          * Disabling SVGA will turn off device modesetting capabilities, so
1180          * notify KMS about that so that it doesn't cache atomic state that
1181          * isn't valid anymore, for example crtcs turned on.
1182          * Strictly we'd want to do this under the SVGA lock (or an SVGA mutex),
1183          * but vmw_kms_lost_device() takes the reservation sem and thus we'll
1184          * end up with lock order reversal. Thus, a master may actually perform
1185          * a new modeset just after we call vmw_kms_lost_device() and race with
1186          * vmw_svga_disable(), but that should at worst cause atomic KMS state
1187          * to be inconsistent with the device, causing modesetting problems.
1188          *
1189          */
1190         vmw_kms_lost_device(dev_priv->dev);
1191         ttm_write_lock(&dev_priv->reservation_sem, false);
1192         spin_lock(&dev_priv->svga_lock);
1193         if (dev_priv->bdev.man[TTM_PL_VRAM].use_type) {
1194                 dev_priv->bdev.man[TTM_PL_VRAM].use_type = false;
1195                 spin_unlock(&dev_priv->svga_lock);
1196                 if (ttm_bo_evict_mm(&dev_priv->bdev, TTM_PL_VRAM))
1197                         DRM_ERROR("Failed evicting VRAM buffers.\n");
1198                 vmw_write(dev_priv, SVGA_REG_ENABLE,
1199                           SVGA_REG_ENABLE_HIDE |
1200                           SVGA_REG_ENABLE_ENABLE);
1201         } else
1202                 spin_unlock(&dev_priv->svga_lock);
1203         ttm_write_unlock(&dev_priv->reservation_sem);
1204 }
1205 
1206 static void vmw_remove(struct pci_dev *pdev)
1207 {
1208         struct drm_device *dev = pci_get_drvdata(pdev);
1209 
1210         pci_disable_device(pdev);
1211         drm_put_dev(dev);
1212 }
1213 
1214 static int vmwgfx_pm_notifier(struct notifier_block *nb, unsigned long val,
1215                               void *ptr)
1216 {
1217         struct vmw_private *dev_priv =
1218                 container_of(nb, struct vmw_private, pm_nb);
1219 
1220         switch (val) {
1221         case PM_HIBERNATION_PREPARE:
1222                 /*
1223                  * Take the reservation sem in write mode, which will make sure
1224                  * there are no other processes holding a buffer object
1225                  * reservation, meaning we should be able to evict all buffer
1226                  * objects if needed.
1227                  * Once user-space processes have been frozen, we can release
1228                  * the lock again.
1229                  */
1230                 ttm_suspend_lock(&dev_priv->reservation_sem);
1231                 dev_priv->suspend_locked = true;
1232                 break;
1233         case PM_POST_HIBERNATION:
1234         case PM_POST_RESTORE:
1235                 if (READ_ONCE(dev_priv->suspend_locked)) {
1236                         dev_priv->suspend_locked = false;
1237                         ttm_suspend_unlock(&dev_priv->reservation_sem);
1238                 }
1239                 break;
1240         default:
1241                 break;
1242         }
1243         return 0;
1244 }
1245 
1246 static int vmw_pci_suspend(struct pci_dev *pdev, pm_message_t state)
1247 {
1248         struct drm_device *dev = pci_get_drvdata(pdev);
1249         struct vmw_private *dev_priv = vmw_priv(dev);
1250 
1251         if (dev_priv->refuse_hibernation)
1252                 return -EBUSY;
1253 
1254         pci_save_state(pdev);
1255         pci_disable_device(pdev);
1256         pci_set_power_state(pdev, PCI_D3hot);
1257         return 0;
1258 }
1259 
1260 static int vmw_pci_resume(struct pci_dev *pdev)
1261 {
1262         pci_set_power_state(pdev, PCI_D0);
1263         pci_restore_state(pdev);
1264         return pci_enable_device(pdev);
1265 }
1266 
1267 static int vmw_pm_suspend(struct device *kdev)
1268 {
1269         struct pci_dev *pdev = to_pci_dev(kdev);
1270         struct pm_message dummy;
1271 
1272         dummy.event = 0;
1273 
1274         return vmw_pci_suspend(pdev, dummy);
1275 }
1276 
1277 static int vmw_pm_resume(struct device *kdev)
1278 {
1279         struct pci_dev *pdev = to_pci_dev(kdev);
1280 
1281         return vmw_pci_resume(pdev);
1282 }
1283 
1284 static int vmw_pm_freeze(struct device *kdev)
1285 {
1286         struct pci_dev *pdev = to_pci_dev(kdev);
1287         struct drm_device *dev = pci_get_drvdata(pdev);
1288         struct vmw_private *dev_priv = vmw_priv(dev);
1289         int ret;
1290 
1291         /*
1292          * Unlock for vmw_kms_suspend.
1293          * No user-space processes should be running now.
1294          */
1295         ttm_suspend_unlock(&dev_priv->reservation_sem);
1296         ret = vmw_kms_suspend(dev_priv->dev);
1297         if (ret) {
1298                 ttm_suspend_lock(&dev_priv->reservation_sem);
1299                 DRM_ERROR("Failed to freeze modesetting.\n");
1300                 return ret;
1301         }
1302         if (dev_priv->enable_fb)
1303                 vmw_fb_off(dev_priv);
1304 
1305         ttm_suspend_lock(&dev_priv->reservation_sem);
1306         vmw_execbuf_release_pinned_bo(dev_priv);
1307         vmw_resource_evict_all(dev_priv);
1308         vmw_release_device_early(dev_priv);
1309         ttm_bo_swapout_all(&dev_priv->bdev);
1310         if (dev_priv->enable_fb)
1311                 vmw_fifo_resource_dec(dev_priv);
1312         if (atomic_read(&dev_priv->num_fifo_resources) != 0) {
1313                 DRM_ERROR("Can't hibernate while 3D resources are active.\n");
1314                 if (dev_priv->enable_fb)
1315                         vmw_fifo_resource_inc(dev_priv);
1316                 WARN_ON(vmw_request_device_late(dev_priv));
1317                 dev_priv->suspend_locked = false;
1318                 ttm_suspend_unlock(&dev_priv->reservation_sem);
1319                 if (dev_priv->suspend_state)
1320                         vmw_kms_resume(dev);
1321                 if (dev_priv->enable_fb)
1322                         vmw_fb_on(dev_priv);
1323                 return -EBUSY;
1324         }
1325 
1326         vmw_fence_fifo_down(dev_priv->fman);
1327         __vmw_svga_disable(dev_priv);
1328         
1329         vmw_release_device_late(dev_priv);
1330         return 0;
1331 }
1332 
1333 static int vmw_pm_restore(struct device *kdev)
1334 {
1335         struct pci_dev *pdev = to_pci_dev(kdev);
1336         struct drm_device *dev = pci_get_drvdata(pdev);
1337         struct vmw_private *dev_priv = vmw_priv(dev);
1338         int ret;
1339 
1340         vmw_write(dev_priv, SVGA_REG_ID, SVGA_ID_2);
1341         (void) vmw_read(dev_priv, SVGA_REG_ID);
1342 
1343         if (dev_priv->enable_fb)
1344                 vmw_fifo_resource_inc(dev_priv);
1345 
1346         ret = vmw_request_device(dev_priv);
1347         if (ret)
1348                 return ret;
1349 
1350         if (dev_priv->enable_fb)
1351                 __vmw_svga_enable(dev_priv);
1352 
1353         vmw_fence_fifo_up(dev_priv->fman);
1354         dev_priv->suspend_locked = false;
1355         ttm_suspend_unlock(&dev_priv->reservation_sem);
1356         if (dev_priv->suspend_state)
1357                 vmw_kms_resume(dev_priv->dev);
1358 
1359         if (dev_priv->enable_fb)
1360                 vmw_fb_on(dev_priv);
1361 
1362         return 0;
1363 }
1364 
1365 static const struct dev_pm_ops vmw_pm_ops = {
1366         .freeze = vmw_pm_freeze,
1367         .thaw = vmw_pm_restore,
1368         .restore = vmw_pm_restore,
1369         .suspend = vmw_pm_suspend,
1370         .resume = vmw_pm_resume,
1371 };
1372 
1373 static const struct file_operations vmwgfx_driver_fops = {
1374         .owner = THIS_MODULE,
1375         .open = drm_open,
1376         .release = drm_release,
1377         .unlocked_ioctl = vmw_unlocked_ioctl,
1378         .mmap = vmw_mmap,
1379         .poll = vmw_fops_poll,
1380         .read = vmw_fops_read,
1381 #if defined(CONFIG_COMPAT)
1382         .compat_ioctl = vmw_compat_ioctl,
1383 #endif
1384         .llseek = noop_llseek,
1385 };
1386 
1387 static struct drm_driver driver = {
1388         .driver_features =
1389         DRIVER_MODESET | DRIVER_RENDER | DRIVER_ATOMIC,
1390         .load = vmw_driver_load,
1391         .unload = vmw_driver_unload,
1392         .get_vblank_counter = vmw_get_vblank_counter,
1393         .enable_vblank = vmw_enable_vblank,
1394         .disable_vblank = vmw_disable_vblank,
1395         .ioctls = vmw_ioctls,
1396         .num_ioctls = ARRAY_SIZE(vmw_ioctls),
1397         .master_set = vmw_master_set,
1398         .master_drop = vmw_master_drop,
1399         .open = vmw_driver_open,
1400         .postclose = vmw_postclose,
1401 
1402         .dumb_create = vmw_dumb_create,
1403         .dumb_map_offset = vmw_dumb_map_offset,
1404         .dumb_destroy = vmw_dumb_destroy,
1405 
1406         .prime_fd_to_handle = vmw_prime_fd_to_handle,
1407         .prime_handle_to_fd = vmw_prime_handle_to_fd,
1408 
1409         .fops = &vmwgfx_driver_fops,
1410         .name = VMWGFX_DRIVER_NAME,
1411         .desc = VMWGFX_DRIVER_DESC,
1412         .date = VMWGFX_DRIVER_DATE,
1413         .major = VMWGFX_DRIVER_MAJOR,
1414         .minor = VMWGFX_DRIVER_MINOR,
1415         .patchlevel = VMWGFX_DRIVER_PATCHLEVEL
1416 };
1417 
1418 static struct pci_driver vmw_pci_driver = {
1419         .name = VMWGFX_DRIVER_NAME,
1420         .id_table = vmw_pci_id_list,
1421         .probe = vmw_probe,
1422         .remove = vmw_remove,
1423         .driver = {
1424                 .pm = &vmw_pm_ops
1425         }
1426 };
1427 
1428 static int vmw_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1429 {
1430         return drm_get_pci_dev(pdev, ent, &driver);
1431 }
1432 
1433 static int __init vmwgfx_init(void)
1434 {
1435         int ret;
1436 
1437         if (vgacon_text_force())
1438                 return -EINVAL;
1439 
1440         ret = pci_register_driver(&vmw_pci_driver);
1441         if (ret)
1442                 DRM_ERROR("Failed initializing DRM.\n");
1443         return ret;
1444 }
1445 
1446 static void __exit vmwgfx_exit(void)
1447 {
1448         pci_unregister_driver(&vmw_pci_driver);
1449 }
1450 
1451 module_init(vmwgfx_init);
1452 module_exit(vmwgfx_exit);
1453 
1454 MODULE_AUTHOR("VMware Inc. and others");
1455 MODULE_DESCRIPTION("Standalone drm driver for the VMware SVGA device");
1456 MODULE_LICENSE("GPL and additional rights");
1457 MODULE_VERSION(__stringify(VMWGFX_DRIVER_MAJOR) "."
1458                __stringify(VMWGFX_DRIVER_MINOR) "."
1459                __stringify(VMWGFX_DRIVER_PATCHLEVEL) "."
1460                "0");
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c

DEFINITIONS
