xref: /linux/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c (revision 6ed7ffddcf61f668114edb676417e5fb33773b59)
1 /**************************************************************************
2  *
3  * Copyright © 2009 VMware, Inc., Palo Alto, CA., USA
4  * All Rights Reserved.
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a
7  * copy of this software and associated documentation files (the
8  * "Software"), to deal in the Software without restriction, including
9  * without limitation the rights to use, copy, modify, merge, publish,
10  * distribute, sub license, and/or sell copies of the Software, and to
11  * permit persons to whom the Software is furnished to do so, subject to
12  * the following conditions:
13  *
14  * The above copyright notice and this permission notice (including the
15  * next paragraph) shall be included in all copies or substantial portions
16  * of the Software.
17  *
18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
21  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
22  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
23  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
24  * USE OR OTHER DEALINGS IN THE SOFTWARE.
25  *
26  **************************************************************************/
27 #include <linux/module.h>
28 
29 #include <drm/drmP.h>
30 #include "vmwgfx_drv.h"
31 #include <drm/ttm/ttm_placement.h>
32 #include <drm/ttm/ttm_bo_driver.h>
33 #include <drm/ttm/ttm_object.h>
34 #include <drm/ttm/ttm_module.h>
35 
36 #define VMWGFX_DRIVER_NAME "vmwgfx"
37 #define VMWGFX_DRIVER_DESC "Linux drm driver for VMware graphics devices"
38 #define VMWGFX_CHIP_SVGAII 0
39 #define VMW_FB_RESERVATION 0
40 
41 #define VMW_MIN_INITIAL_WIDTH 800
42 #define VMW_MIN_INITIAL_HEIGHT 600
43 
44 
45 /**
46  * Fully encoded drm commands. Might move to vmw_drm.h
47  */
48 
49 #define DRM_IOCTL_VMW_GET_PARAM					\
50 	DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_GET_PARAM,		\
51 		 struct drm_vmw_getparam_arg)
52 #define DRM_IOCTL_VMW_ALLOC_DMABUF				\
53 	DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_ALLOC_DMABUF,	\
54 		union drm_vmw_alloc_dmabuf_arg)
55 #define DRM_IOCTL_VMW_UNREF_DMABUF				\
56 	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_DMABUF,	\
57 		struct drm_vmw_unref_dmabuf_arg)
58 #define DRM_IOCTL_VMW_CURSOR_BYPASS				\
59 	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_CURSOR_BYPASS,	\
60 		 struct drm_vmw_cursor_bypass_arg)
61 
62 #define DRM_IOCTL_VMW_CONTROL_STREAM				\
63 	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_CONTROL_STREAM,	\
64 		 struct drm_vmw_control_stream_arg)
65 #define DRM_IOCTL_VMW_CLAIM_STREAM				\
66 	DRM_IOR(DRM_COMMAND_BASE + DRM_VMW_CLAIM_STREAM,	\
67 		 struct drm_vmw_stream_arg)
68 #define DRM_IOCTL_VMW_UNREF_STREAM				\
69 	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_STREAM,	\
70 		 struct drm_vmw_stream_arg)
71 
72 #define DRM_IOCTL_VMW_CREATE_CONTEXT				\
73 	DRM_IOR(DRM_COMMAND_BASE + DRM_VMW_CREATE_CONTEXT,	\
74 		struct drm_vmw_context_arg)
75 #define DRM_IOCTL_VMW_UNREF_CONTEXT				\
76 	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_CONTEXT,	\
77 		struct drm_vmw_context_arg)
78 #define DRM_IOCTL_VMW_CREATE_SURFACE				\
79 	DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_CREATE_SURFACE,	\
80 		 union drm_vmw_surface_create_arg)
81 #define DRM_IOCTL_VMW_UNREF_SURFACE				\
82 	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_SURFACE,	\
83 		 struct drm_vmw_surface_arg)
84 #define DRM_IOCTL_VMW_REF_SURFACE				\
85 	DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_REF_SURFACE,	\
86 		 union drm_vmw_surface_reference_arg)
87 #define DRM_IOCTL_VMW_EXECBUF					\
88 	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_EXECBUF,		\
89 		struct drm_vmw_execbuf_arg)
90 #define DRM_IOCTL_VMW_GET_3D_CAP				\
91 	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_GET_3D_CAP,		\
92 		 struct drm_vmw_get_3d_cap_arg)
93 #define DRM_IOCTL_VMW_FENCE_WAIT				\
94 	DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_FENCE_WAIT,		\
95 		 struct drm_vmw_fence_wait_arg)
96 #define DRM_IOCTL_VMW_FENCE_SIGNALED				\
97 	DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_FENCE_SIGNALED,	\
98 		 struct drm_vmw_fence_signaled_arg)
99 #define DRM_IOCTL_VMW_FENCE_UNREF				\
100 	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_FENCE_UNREF,		\
101 		 struct drm_vmw_fence_arg)
102 #define DRM_IOCTL_VMW_FENCE_EVENT				\
103 	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_FENCE_EVENT,		\
104 		 struct drm_vmw_fence_event_arg)
105 #define DRM_IOCTL_VMW_PRESENT					\
106 	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_PRESENT,		\
107 		 struct drm_vmw_present_arg)
108 #define DRM_IOCTL_VMW_PRESENT_READBACK				\
109 	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_PRESENT_READBACK,	\
110 		 struct drm_vmw_present_readback_arg)
111 #define DRM_IOCTL_VMW_UPDATE_LAYOUT				\
112 	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UPDATE_LAYOUT,	\
113 		 struct drm_vmw_update_layout_arg)
114 
115 /**
116  * The core DRM version of this macro doesn't account for
117  * DRM_COMMAND_BASE.
118  */
119 
120 #define VMW_IOCTL_DEF(ioctl, func, flags) \
121   [DRM_IOCTL_NR(DRM_IOCTL_##ioctl) - DRM_COMMAND_BASE] = {DRM_##ioctl, flags, func, DRM_IOCTL_##ioctl}
122 
123 /**
124  * Ioctl definitions.
125  */
126 
127 static struct drm_ioctl_desc vmw_ioctls[] = {
128 	VMW_IOCTL_DEF(VMW_GET_PARAM, vmw_getparam_ioctl,
129 		      DRM_AUTH | DRM_UNLOCKED),
130 	VMW_IOCTL_DEF(VMW_ALLOC_DMABUF, vmw_dmabuf_alloc_ioctl,
131 		      DRM_AUTH | DRM_UNLOCKED),
132 	VMW_IOCTL_DEF(VMW_UNREF_DMABUF, vmw_dmabuf_unref_ioctl,
133 		      DRM_AUTH | DRM_UNLOCKED),
134 	VMW_IOCTL_DEF(VMW_CURSOR_BYPASS,
135 		      vmw_kms_cursor_bypass_ioctl,
136 		      DRM_MASTER | DRM_CONTROL_ALLOW | DRM_UNLOCKED),
137 
138 	VMW_IOCTL_DEF(VMW_CONTROL_STREAM, vmw_overlay_ioctl,
139 		      DRM_MASTER | DRM_CONTROL_ALLOW | DRM_UNLOCKED),
140 	VMW_IOCTL_DEF(VMW_CLAIM_STREAM, vmw_stream_claim_ioctl,
141 		      DRM_MASTER | DRM_CONTROL_ALLOW | DRM_UNLOCKED),
142 	VMW_IOCTL_DEF(VMW_UNREF_STREAM, vmw_stream_unref_ioctl,
143 		      DRM_MASTER | DRM_CONTROL_ALLOW | DRM_UNLOCKED),
144 
145 	VMW_IOCTL_DEF(VMW_CREATE_CONTEXT, vmw_context_define_ioctl,
146 		      DRM_AUTH | DRM_UNLOCKED),
147 	VMW_IOCTL_DEF(VMW_UNREF_CONTEXT, vmw_context_destroy_ioctl,
148 		      DRM_AUTH | DRM_UNLOCKED),
149 	VMW_IOCTL_DEF(VMW_CREATE_SURFACE, vmw_surface_define_ioctl,
150 		      DRM_AUTH | DRM_UNLOCKED),
151 	VMW_IOCTL_DEF(VMW_UNREF_SURFACE, vmw_surface_destroy_ioctl,
152 		      DRM_AUTH | DRM_UNLOCKED),
153 	VMW_IOCTL_DEF(VMW_REF_SURFACE, vmw_surface_reference_ioctl,
154 		      DRM_AUTH | DRM_UNLOCKED),
155 	VMW_IOCTL_DEF(VMW_EXECBUF, vmw_execbuf_ioctl,
156 		      DRM_AUTH | DRM_UNLOCKED),
157 	VMW_IOCTL_DEF(VMW_FENCE_WAIT, vmw_fence_obj_wait_ioctl,
158 		      DRM_AUTH | DRM_UNLOCKED),
159 	VMW_IOCTL_DEF(VMW_FENCE_SIGNALED,
160 		      vmw_fence_obj_signaled_ioctl,
161 		      DRM_AUTH | DRM_UNLOCKED),
162 	VMW_IOCTL_DEF(VMW_FENCE_UNREF, vmw_fence_obj_unref_ioctl,
163 		      DRM_AUTH | DRM_UNLOCKED),
164 	VMW_IOCTL_DEF(VMW_FENCE_EVENT,
165 		      vmw_fence_event_ioctl,
166 		      DRM_AUTH | DRM_UNLOCKED),
167 	VMW_IOCTL_DEF(VMW_GET_3D_CAP, vmw_get_cap_3d_ioctl,
168 		      DRM_AUTH | DRM_UNLOCKED),
169 
170 	/* these allow direct access to the framebuffers mark as master only */
171 	VMW_IOCTL_DEF(VMW_PRESENT, vmw_present_ioctl,
172 		      DRM_MASTER | DRM_AUTH | DRM_UNLOCKED),
173 	VMW_IOCTL_DEF(VMW_PRESENT_READBACK,
174 		      vmw_present_readback_ioctl,
175 		      DRM_MASTER | DRM_AUTH | DRM_UNLOCKED),
176 	VMW_IOCTL_DEF(VMW_UPDATE_LAYOUT,
177 		      vmw_kms_update_layout_ioctl,
178 		      DRM_MASTER | DRM_UNLOCKED),
179 };
180 
181 static struct pci_device_id vmw_pci_id_list[] = {
182 	{0x15ad, 0x0405, PCI_ANY_ID, PCI_ANY_ID, 0, 0, VMWGFX_CHIP_SVGAII},
183 	{0, 0, 0}
184 };
185 MODULE_DEVICE_TABLE(pci, vmw_pci_id_list);
186 
187 static int enable_fbdev = IS_ENABLED(CONFIG_DRM_VMWGFX_FBCON);
188 
189 static int vmw_probe(struct pci_dev *, const struct pci_device_id *);
190 static void vmw_master_init(struct vmw_master *);
191 static int vmwgfx_pm_notifier(struct notifier_block *nb, unsigned long val,
192 			      void *ptr);
193 
194 MODULE_PARM_DESC(enable_fbdev, "Enable vmwgfx fbdev");
195 module_param_named(enable_fbdev, enable_fbdev, int, 0600);
196 
197 static void vmw_print_capabilities(uint32_t capabilities)
198 {
199 	DRM_INFO("Capabilities:\n");
200 	if (capabilities & SVGA_CAP_RECT_COPY)
201 		DRM_INFO("  Rect copy.\n");
202 	if (capabilities & SVGA_CAP_CURSOR)
203 		DRM_INFO("  Cursor.\n");
204 	if (capabilities & SVGA_CAP_CURSOR_BYPASS)
205 		DRM_INFO("  Cursor bypass.\n");
206 	if (capabilities & SVGA_CAP_CURSOR_BYPASS_2)
207 		DRM_INFO("  Cursor bypass 2.\n");
208 	if (capabilities & SVGA_CAP_8BIT_EMULATION)
209 		DRM_INFO("  8bit emulation.\n");
210 	if (capabilities & SVGA_CAP_ALPHA_CURSOR)
211 		DRM_INFO("  Alpha cursor.\n");
212 	if (capabilities & SVGA_CAP_3D)
213 		DRM_INFO("  3D.\n");
214 	if (capabilities & SVGA_CAP_EXTENDED_FIFO)
215 		DRM_INFO("  Extended Fifo.\n");
216 	if (capabilities & SVGA_CAP_MULTIMON)
217 		DRM_INFO("  Multimon.\n");
218 	if (capabilities & SVGA_CAP_PITCHLOCK)
219 		DRM_INFO("  Pitchlock.\n");
220 	if (capabilities & SVGA_CAP_IRQMASK)
221 		DRM_INFO("  Irq mask.\n");
222 	if (capabilities & SVGA_CAP_DISPLAY_TOPOLOGY)
223 		DRM_INFO("  Display Topology.\n");
224 	if (capabilities & SVGA_CAP_GMR)
225 		DRM_INFO("  GMR.\n");
226 	if (capabilities & SVGA_CAP_TRACES)
227 		DRM_INFO("  Traces.\n");
228 	if (capabilities & SVGA_CAP_GMR2)
229 		DRM_INFO("  GMR2.\n");
230 	if (capabilities & SVGA_CAP_SCREEN_OBJECT_2)
231 		DRM_INFO("  Screen Object 2.\n");
232 }
233 
234 
235 /**
236  * vmw_execbuf_prepare_dummy_query - Initialize a query result structure at
237  * the start of a buffer object.
238  *
239  * @dev_priv: The device private structure.
240  *
241  * This function will idle the buffer using an uninterruptible wait, then
242  * map the first page and initialize a pending occlusion query result structure,
243  * Finally it will unmap the buffer.
244  *
245  * TODO: Since we're only mapping a single page, we should optimize the map
246  * to use kmap_atomic / iomap_atomic.
247  */
248 static void vmw_dummy_query_bo_prepare(struct vmw_private *dev_priv)
249 {
250 	struct ttm_bo_kmap_obj map;
251 	volatile SVGA3dQueryResult *result;
252 	bool dummy;
253 	int ret;
254 	struct ttm_bo_device *bdev = &dev_priv->bdev;
255 	struct ttm_buffer_object *bo = dev_priv->dummy_query_bo;
256 
257 	ttm_bo_reserve(bo, false, false, false, 0);
258 	spin_lock(&bdev->fence_lock);
259 	ret = ttm_bo_wait(bo, false, false, false);
260 	spin_unlock(&bdev->fence_lock);
261 	if (unlikely(ret != 0))
262 		(void) vmw_fallback_wait(dev_priv, false, true, 0, false,
263 					 10*HZ);
264 
265 	ret = ttm_bo_kmap(bo, 0, 1, &map);
266 	if (likely(ret == 0)) {
267 		result = ttm_kmap_obj_virtual(&map, &dummy);
268 		result->totalSize = sizeof(*result);
269 		result->state = SVGA3D_QUERYSTATE_PENDING;
270 		result->result32 = 0xff;
271 		ttm_bo_kunmap(&map);
272 	} else
273 		DRM_ERROR("Dummy query buffer map failed.\n");
274 	ttm_bo_unreserve(bo);
275 }
276 
277 
278 /**
279  * vmw_dummy_query_bo_create - create a bo to hold a dummy query result
280  *
281  * @dev_priv: A device private structure.
282  *
283  * This function creates a small buffer object that holds the query
284  * result for dummy queries emitted as query barriers.
285  * No interruptible waits are done within this function.
286  *
287  * Returns an error if bo creation fails.
288  */
289 static int vmw_dummy_query_bo_create(struct vmw_private *dev_priv)
290 {
291 	return ttm_bo_create(&dev_priv->bdev,
292 			     PAGE_SIZE,
293 			     ttm_bo_type_device,
294 			     &vmw_vram_sys_placement,
295 			     0, false, NULL,
296 			     &dev_priv->dummy_query_bo);
297 }
298 
299 
300 static int vmw_request_device(struct vmw_private *dev_priv)
301 {
302 	int ret;
303 
304 	ret = vmw_fifo_init(dev_priv, &dev_priv->fifo);
305 	if (unlikely(ret != 0)) {
306 		DRM_ERROR("Unable to initialize FIFO.\n");
307 		return ret;
308 	}
309 	vmw_fence_fifo_up(dev_priv->fman);
310 	ret = vmw_dummy_query_bo_create(dev_priv);
311 	if (unlikely(ret != 0))
312 		goto out_no_query_bo;
313 	vmw_dummy_query_bo_prepare(dev_priv);
314 
315 	return 0;
316 
317 out_no_query_bo:
318 	vmw_fence_fifo_down(dev_priv->fman);
319 	vmw_fifo_release(dev_priv, &dev_priv->fifo);
320 	return ret;
321 }
322 
323 static void vmw_release_device(struct vmw_private *dev_priv)
324 {
325 	/*
326 	 * Previous destructions should've released
327 	 * the pinned bo.
328 	 */
329 
330 	BUG_ON(dev_priv->pinned_bo != NULL);
331 
332 	ttm_bo_unref(&dev_priv->dummy_query_bo);
333 	vmw_fence_fifo_down(dev_priv->fman);
334 	vmw_fifo_release(dev_priv, &dev_priv->fifo);
335 }
336 
337 /**
338  * Increase the 3d resource refcount.
339  * If the count was prevously zero, initialize the fifo, switching to svga
340  * mode. Note that the master holds a ref as well, and may request an
341  * explicit switch to svga mode if fb is not running, using @unhide_svga.
342  */
343 int vmw_3d_resource_inc(struct vmw_private *dev_priv,
344 			bool unhide_svga)
345 {
346 	int ret = 0;
347 
348 	mutex_lock(&dev_priv->release_mutex);
349 	if (unlikely(dev_priv->num_3d_resources++ == 0)) {
350 		ret = vmw_request_device(dev_priv);
351 		if (unlikely(ret != 0))
352 			--dev_priv->num_3d_resources;
353 	} else if (unhide_svga) {
354 		mutex_lock(&dev_priv->hw_mutex);
355 		vmw_write(dev_priv, SVGA_REG_ENABLE,
356 			  vmw_read(dev_priv, SVGA_REG_ENABLE) &
357 			  ~SVGA_REG_ENABLE_HIDE);
358 		mutex_unlock(&dev_priv->hw_mutex);
359 	}
360 
361 	mutex_unlock(&dev_priv->release_mutex);
362 	return ret;
363 }
364 
365 /**
366  * Decrease the 3d resource refcount.
367  * If the count reaches zero, disable the fifo, switching to vga mode.
368  * Note that the master holds a refcount as well, and may request an
369  * explicit switch to vga mode when it releases its refcount to account
370  * for the situation of an X server vt switch to VGA with 3d resources
371  * active.
372  */
373 void vmw_3d_resource_dec(struct vmw_private *dev_priv,
374 			 bool hide_svga)
375 {
376 	int32_t n3d;
377 
378 	mutex_lock(&dev_priv->release_mutex);
379 	if (unlikely(--dev_priv->num_3d_resources == 0))
380 		vmw_release_device(dev_priv);
381 	else if (hide_svga) {
382 		mutex_lock(&dev_priv->hw_mutex);
383 		vmw_write(dev_priv, SVGA_REG_ENABLE,
384 			  vmw_read(dev_priv, SVGA_REG_ENABLE) |
385 			  SVGA_REG_ENABLE_HIDE);
386 		mutex_unlock(&dev_priv->hw_mutex);
387 	}
388 
389 	n3d = (int32_t) dev_priv->num_3d_resources;
390 	mutex_unlock(&dev_priv->release_mutex);
391 
392 	BUG_ON(n3d < 0);
393 }
394 
395 /**
396  * Sets the initial_[width|height] fields on the given vmw_private.
397  *
398  * It does so by reading SVGA_REG_[WIDTH|HEIGHT] regs and then
399  * clamping the value to fb_max_[width|height] fields and the
400  * VMW_MIN_INITIAL_[WIDTH|HEIGHT].
401  * If the values appear to be invalid, set them to
402  * VMW_MIN_INITIAL_[WIDTH|HEIGHT].
403  */
404 static void vmw_get_initial_size(struct vmw_private *dev_priv)
405 {
406 	uint32_t width;
407 	uint32_t height;
408 
409 	width = vmw_read(dev_priv, SVGA_REG_WIDTH);
410 	height = vmw_read(dev_priv, SVGA_REG_HEIGHT);
411 
412 	width = max_t(uint32_t, width, VMW_MIN_INITIAL_WIDTH);
413 	height = max_t(uint32_t, height, VMW_MIN_INITIAL_HEIGHT);
414 
415 	if (width > dev_priv->fb_max_width ||
416 	    height > dev_priv->fb_max_height) {
417 
418 		/*
419 		 * This is a host error and shouldn't occur.
420 		 */
421 
422 		width = VMW_MIN_INITIAL_WIDTH;
423 		height = VMW_MIN_INITIAL_HEIGHT;
424 	}
425 
426 	dev_priv->initial_width = width;
427 	dev_priv->initial_height = height;
428 }
429 
430 static int vmw_driver_load(struct drm_device *dev, unsigned long chipset)
431 {
432 	struct vmw_private *dev_priv;
433 	int ret;
434 	uint32_t svga_id;
435 	enum vmw_res_type i;
436 
437 	dev_priv = kzalloc(sizeof(*dev_priv), GFP_KERNEL);
438 	if (unlikely(dev_priv == NULL)) {
439 		DRM_ERROR("Failed allocating a device private struct.\n");
440 		return -ENOMEM;
441 	}
442 
443 	pci_set_master(dev->pdev);
444 
445 	dev_priv->dev = dev;
446 	dev_priv->vmw_chipset = chipset;
447 	dev_priv->last_read_seqno = (uint32_t) -100;
448 	mutex_init(&dev_priv->hw_mutex);
449 	mutex_init(&dev_priv->cmdbuf_mutex);
450 	mutex_init(&dev_priv->release_mutex);
451 	rwlock_init(&dev_priv->resource_lock);
452 
453 	for (i = vmw_res_context; i < vmw_res_max; ++i) {
454 		idr_init(&dev_priv->res_idr[i]);
455 		INIT_LIST_HEAD(&dev_priv->res_lru[i]);
456 	}
457 
458 	mutex_init(&dev_priv->init_mutex);
459 	init_waitqueue_head(&dev_priv->fence_queue);
460 	init_waitqueue_head(&dev_priv->fifo_queue);
461 	dev_priv->fence_queue_waiters = 0;
462 	atomic_set(&dev_priv->fifo_queue_waiters, 0);
463 
464 	dev_priv->used_memory_size = 0;
465 
466 	dev_priv->io_start = pci_resource_start(dev->pdev, 0);
467 	dev_priv->vram_start = pci_resource_start(dev->pdev, 1);
468 	dev_priv->mmio_start = pci_resource_start(dev->pdev, 2);
469 
470 	dev_priv->enable_fb = enable_fbdev;
471 
472 	mutex_lock(&dev_priv->hw_mutex);
473 
474 	vmw_write(dev_priv, SVGA_REG_ID, SVGA_ID_2);
475 	svga_id = vmw_read(dev_priv, SVGA_REG_ID);
476 	if (svga_id != SVGA_ID_2) {
477 		ret = -ENOSYS;
478 		DRM_ERROR("Unsupported SVGA ID 0x%x\n", svga_id);
479 		mutex_unlock(&dev_priv->hw_mutex);
480 		goto out_err0;
481 	}
482 
483 	dev_priv->capabilities = vmw_read(dev_priv, SVGA_REG_CAPABILITIES);
484 
485 	dev_priv->vram_size = vmw_read(dev_priv, SVGA_REG_VRAM_SIZE);
486 	dev_priv->mmio_size = vmw_read(dev_priv, SVGA_REG_MEM_SIZE);
487 	dev_priv->fb_max_width = vmw_read(dev_priv, SVGA_REG_MAX_WIDTH);
488 	dev_priv->fb_max_height = vmw_read(dev_priv, SVGA_REG_MAX_HEIGHT);
489 
490 	vmw_get_initial_size(dev_priv);
491 
492 	if (dev_priv->capabilities & SVGA_CAP_GMR) {
493 		dev_priv->max_gmr_descriptors =
494 			vmw_read(dev_priv,
495 				 SVGA_REG_GMR_MAX_DESCRIPTOR_LENGTH);
496 		dev_priv->max_gmr_ids =
497 			vmw_read(dev_priv, SVGA_REG_GMR_MAX_IDS);
498 	}
499 	if (dev_priv->capabilities & SVGA_CAP_GMR2) {
500 		dev_priv->max_gmr_pages =
501 			vmw_read(dev_priv, SVGA_REG_GMRS_MAX_PAGES);
502 		dev_priv->memory_size =
503 			vmw_read(dev_priv, SVGA_REG_MEMORY_SIZE);
504 		dev_priv->memory_size -= dev_priv->vram_size;
505 	} else {
506 		/*
507 		 * An arbitrary limit of 512MiB on surface
508 		 * memory. But all HWV8 hardware supports GMR2.
509 		 */
510 		dev_priv->memory_size = 512*1024*1024;
511 	}
512 
513 	mutex_unlock(&dev_priv->hw_mutex);
514 
515 	vmw_print_capabilities(dev_priv->capabilities);
516 
517 	if (dev_priv->capabilities & SVGA_CAP_GMR) {
518 		DRM_INFO("Max GMR ids is %u\n",
519 			 (unsigned)dev_priv->max_gmr_ids);
520 		DRM_INFO("Max GMR descriptors is %u\n",
521 			 (unsigned)dev_priv->max_gmr_descriptors);
522 	}
523 	if (dev_priv->capabilities & SVGA_CAP_GMR2) {
524 		DRM_INFO("Max number of GMR pages is %u\n",
525 			 (unsigned)dev_priv->max_gmr_pages);
526 		DRM_INFO("Max dedicated hypervisor surface memory is %u kiB\n",
527 			 (unsigned)dev_priv->memory_size / 1024);
528 	}
529 	DRM_INFO("VRAM at 0x%08x size is %u kiB\n",
530 		 dev_priv->vram_start, dev_priv->vram_size / 1024);
531 	DRM_INFO("MMIO at 0x%08x size is %u kiB\n",
532 		 dev_priv->mmio_start, dev_priv->mmio_size / 1024);
533 
534 	ret = vmw_ttm_global_init(dev_priv);
535 	if (unlikely(ret != 0))
536 		goto out_err0;
537 
538 
539 	vmw_master_init(&dev_priv->fbdev_master);
540 	ttm_lock_set_kill(&dev_priv->fbdev_master.lock, false, SIGTERM);
541 	dev_priv->active_master = &dev_priv->fbdev_master;
542 
543 
544 	ret = ttm_bo_device_init(&dev_priv->bdev,
545 				 dev_priv->bo_global_ref.ref.object,
546 				 &vmw_bo_driver, VMWGFX_FILE_PAGE_OFFSET,
547 				 false);
548 	if (unlikely(ret != 0)) {
549 		DRM_ERROR("Failed initializing TTM buffer object driver.\n");
550 		goto out_err1;
551 	}
552 
553 	ret = ttm_bo_init_mm(&dev_priv->bdev, TTM_PL_VRAM,
554 			     (dev_priv->vram_size >> PAGE_SHIFT));
555 	if (unlikely(ret != 0)) {
556 		DRM_ERROR("Failed initializing memory manager for VRAM.\n");
557 		goto out_err2;
558 	}
559 
560 	dev_priv->has_gmr = true;
561 	if (ttm_bo_init_mm(&dev_priv->bdev, VMW_PL_GMR,
562 			   dev_priv->max_gmr_ids) != 0) {
563 		DRM_INFO("No GMR memory available. "
564 			 "Graphics memory resources are very limited.\n");
565 		dev_priv->has_gmr = false;
566 	}
567 
568 	dev_priv->mmio_mtrr = drm_mtrr_add(dev_priv->mmio_start,
569 					   dev_priv->mmio_size, DRM_MTRR_WC);
570 
571 	dev_priv->mmio_virt = ioremap_wc(dev_priv->mmio_start,
572 					 dev_priv->mmio_size);
573 
574 	if (unlikely(dev_priv->mmio_virt == NULL)) {
575 		ret = -ENOMEM;
576 		DRM_ERROR("Failed mapping MMIO.\n");
577 		goto out_err3;
578 	}
579 
580 	/* Need mmio memory to check for fifo pitchlock cap. */
581 	if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY) &&
582 	    !(dev_priv->capabilities & SVGA_CAP_PITCHLOCK) &&
583 	    !vmw_fifo_have_pitchlock(dev_priv)) {
584 		ret = -ENOSYS;
585 		DRM_ERROR("Hardware has no pitchlock\n");
586 		goto out_err4;
587 	}
588 
589 	dev_priv->tdev = ttm_object_device_init
590 	    (dev_priv->mem_global_ref.object, 12);
591 
592 	if (unlikely(dev_priv->tdev == NULL)) {
593 		DRM_ERROR("Unable to initialize TTM object management.\n");
594 		ret = -ENOMEM;
595 		goto out_err4;
596 	}
597 
598 	dev->dev_private = dev_priv;
599 
600 	ret = pci_request_regions(dev->pdev, "vmwgfx probe");
601 	dev_priv->stealth = (ret != 0);
602 	if (dev_priv->stealth) {
603 		/**
604 		 * Request at least the mmio PCI resource.
605 		 */
606 
607 		DRM_INFO("It appears like vesafb is loaded. "
608 			 "Ignore above error if any.\n");
609 		ret = pci_request_region(dev->pdev, 2, "vmwgfx stealth probe");
610 		if (unlikely(ret != 0)) {
611 			DRM_ERROR("Failed reserving the SVGA MMIO resource.\n");
612 			goto out_no_device;
613 		}
614 	}
615 
616 	if (dev_priv->capabilities & SVGA_CAP_IRQMASK) {
617 		ret = drm_irq_install(dev);
618 		if (ret != 0) {
619 			DRM_ERROR("Failed installing irq: %d\n", ret);
620 			goto out_no_irq;
621 		}
622 	}
623 
624 	dev_priv->fman = vmw_fence_manager_init(dev_priv);
625 	if (unlikely(dev_priv->fman == NULL))
626 		goto out_no_fman;
627 
628 	vmw_kms_save_vga(dev_priv);
629 
630 	/* Start kms and overlay systems, needs fifo. */
631 	ret = vmw_kms_init(dev_priv);
632 	if (unlikely(ret != 0))
633 		goto out_no_kms;
634 	vmw_overlay_init(dev_priv);
635 
636 	if (dev_priv->enable_fb) {
637 		ret = vmw_3d_resource_inc(dev_priv, true);
638 		if (unlikely(ret != 0))
639 			goto out_no_fifo;
640 		vmw_fb_init(dev_priv);
641 	}
642 
643 	dev_priv->pm_nb.notifier_call = vmwgfx_pm_notifier;
644 	register_pm_notifier(&dev_priv->pm_nb);
645 
646 	return 0;
647 
648 out_no_fifo:
649 	vmw_overlay_close(dev_priv);
650 	vmw_kms_close(dev_priv);
651 out_no_kms:
652 	vmw_kms_restore_vga(dev_priv);
653 	vmw_fence_manager_takedown(dev_priv->fman);
654 out_no_fman:
655 	if (dev_priv->capabilities & SVGA_CAP_IRQMASK)
656 		drm_irq_uninstall(dev_priv->dev);
657 out_no_irq:
658 	if (dev_priv->stealth)
659 		pci_release_region(dev->pdev, 2);
660 	else
661 		pci_release_regions(dev->pdev);
662 out_no_device:
663 	ttm_object_device_release(&dev_priv->tdev);
664 out_err4:
665 	iounmap(dev_priv->mmio_virt);
666 out_err3:
667 	drm_mtrr_del(dev_priv->mmio_mtrr, dev_priv->mmio_start,
668 		     dev_priv->mmio_size, DRM_MTRR_WC);
669 	if (dev_priv->has_gmr)
670 		(void) ttm_bo_clean_mm(&dev_priv->bdev, VMW_PL_GMR);
671 	(void)ttm_bo_clean_mm(&dev_priv->bdev, TTM_PL_VRAM);
672 out_err2:
673 	(void)ttm_bo_device_release(&dev_priv->bdev);
674 out_err1:
675 	vmw_ttm_global_release(dev_priv);
676 out_err0:
677 	for (i = vmw_res_context; i < vmw_res_max; ++i)
678 		idr_destroy(&dev_priv->res_idr[i]);
679 
680 	kfree(dev_priv);
681 	return ret;
682 }
683 
684 static int vmw_driver_unload(struct drm_device *dev)
685 {
686 	struct vmw_private *dev_priv = vmw_priv(dev);
687 	enum vmw_res_type i;
688 
689 	unregister_pm_notifier(&dev_priv->pm_nb);
690 
691 	if (dev_priv->ctx.res_ht_initialized)
692 		drm_ht_remove(&dev_priv->ctx.res_ht);
693 	if (dev_priv->ctx.cmd_bounce)
694 		vfree(dev_priv->ctx.cmd_bounce);
695 	if (dev_priv->enable_fb) {
696 		vmw_fb_close(dev_priv);
697 		vmw_kms_restore_vga(dev_priv);
698 		vmw_3d_resource_dec(dev_priv, false);
699 	}
700 	vmw_kms_close(dev_priv);
701 	vmw_overlay_close(dev_priv);
702 	vmw_fence_manager_takedown(dev_priv->fman);
703 	if (dev_priv->capabilities & SVGA_CAP_IRQMASK)
704 		drm_irq_uninstall(dev_priv->dev);
705 	if (dev_priv->stealth)
706 		pci_release_region(dev->pdev, 2);
707 	else
708 		pci_release_regions(dev->pdev);
709 
710 	ttm_object_device_release(&dev_priv->tdev);
711 	iounmap(dev_priv->mmio_virt);
712 	drm_mtrr_del(dev_priv->mmio_mtrr, dev_priv->mmio_start,
713 		     dev_priv->mmio_size, DRM_MTRR_WC);
714 	if (dev_priv->has_gmr)
715 		(void)ttm_bo_clean_mm(&dev_priv->bdev, VMW_PL_GMR);
716 	(void)ttm_bo_clean_mm(&dev_priv->bdev, TTM_PL_VRAM);
717 	(void)ttm_bo_device_release(&dev_priv->bdev);
718 	vmw_ttm_global_release(dev_priv);
719 
720 	for (i = vmw_res_context; i < vmw_res_max; ++i)
721 		idr_destroy(&dev_priv->res_idr[i]);
722 
723 	kfree(dev_priv);
724 
725 	return 0;
726 }
727 
728 static void vmw_preclose(struct drm_device *dev,
729 			 struct drm_file *file_priv)
730 {
731 	struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
732 	struct vmw_private *dev_priv = vmw_priv(dev);
733 
734 	vmw_event_fence_fpriv_gone(dev_priv->fman, &vmw_fp->fence_events);
735 }
736 
737 static void vmw_postclose(struct drm_device *dev,
738 			 struct drm_file *file_priv)
739 {
740 	struct vmw_fpriv *vmw_fp;
741 
742 	vmw_fp = vmw_fpriv(file_priv);
743 	ttm_object_file_release(&vmw_fp->tfile);
744 	if (vmw_fp->locked_master)
745 		drm_master_put(&vmw_fp->locked_master);
746 	kfree(vmw_fp);
747 }
748 
749 static int vmw_driver_open(struct drm_device *dev, struct drm_file *file_priv)
750 {
751 	struct vmw_private *dev_priv = vmw_priv(dev);
752 	struct vmw_fpriv *vmw_fp;
753 	int ret = -ENOMEM;
754 
755 	vmw_fp = kzalloc(sizeof(*vmw_fp), GFP_KERNEL);
756 	if (unlikely(vmw_fp == NULL))
757 		return ret;
758 
759 	INIT_LIST_HEAD(&vmw_fp->fence_events);
760 	vmw_fp->tfile = ttm_object_file_init(dev_priv->tdev, 10);
761 	if (unlikely(vmw_fp->tfile == NULL))
762 		goto out_no_tfile;
763 
764 	file_priv->driver_priv = vmw_fp;
765 	dev_priv->bdev.dev_mapping = dev->dev_mapping;
766 
767 	return 0;
768 
769 out_no_tfile:
770 	kfree(vmw_fp);
771 	return ret;
772 }
773 
774 static long vmw_unlocked_ioctl(struct file *filp, unsigned int cmd,
775 			       unsigned long arg)
776 {
777 	struct drm_file *file_priv = filp->private_data;
778 	struct drm_device *dev = file_priv->minor->dev;
779 	unsigned int nr = DRM_IOCTL_NR(cmd);
780 
781 	/*
782 	 * Do extra checking on driver private ioctls.
783 	 */
784 
785 	if ((nr >= DRM_COMMAND_BASE) && (nr < DRM_COMMAND_END)
786 	    && (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls)) {
787 		struct drm_ioctl_desc *ioctl =
788 		    &vmw_ioctls[nr - DRM_COMMAND_BASE];
789 
790 		if (unlikely(ioctl->cmd_drv != cmd)) {
791 			DRM_ERROR("Invalid command format, ioctl %d\n",
792 				  nr - DRM_COMMAND_BASE);
793 			return -EINVAL;
794 		}
795 	}
796 
797 	return drm_ioctl(filp, cmd, arg);
798 }
799 
800 static int vmw_firstopen(struct drm_device *dev)
801 {
802 	struct vmw_private *dev_priv = vmw_priv(dev);
803 	dev_priv->is_opened = true;
804 
805 	return 0;
806 }
807 
808 static void vmw_lastclose(struct drm_device *dev)
809 {
810 	struct vmw_private *dev_priv = vmw_priv(dev);
811 	struct drm_crtc *crtc;
812 	struct drm_mode_set set;
813 	int ret;
814 
815 	/**
816 	 * Do nothing on the lastclose call from drm_unload.
817 	 */
818 
819 	if (!dev_priv->is_opened)
820 		return;
821 
822 	dev_priv->is_opened = false;
823 	set.x = 0;
824 	set.y = 0;
825 	set.fb = NULL;
826 	set.mode = NULL;
827 	set.connectors = NULL;
828 	set.num_connectors = 0;
829 
830 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
831 		set.crtc = crtc;
832 		ret = drm_mode_set_config_internal(&set);
833 		WARN_ON(ret != 0);
834 	}
835 
836 }
837 
838 static void vmw_master_init(struct vmw_master *vmaster)
839 {
840 	ttm_lock_init(&vmaster->lock);
841 	INIT_LIST_HEAD(&vmaster->fb_surf);
842 	mutex_init(&vmaster->fb_surf_mutex);
843 }
844 
845 static int vmw_master_create(struct drm_device *dev,
846 			     struct drm_master *master)
847 {
848 	struct vmw_master *vmaster;
849 
850 	vmaster = kzalloc(sizeof(*vmaster), GFP_KERNEL);
851 	if (unlikely(vmaster == NULL))
852 		return -ENOMEM;
853 
854 	vmw_master_init(vmaster);
855 	ttm_lock_set_kill(&vmaster->lock, true, SIGTERM);
856 	master->driver_priv = vmaster;
857 
858 	return 0;
859 }
860 
861 static void vmw_master_destroy(struct drm_device *dev,
862 			       struct drm_master *master)
863 {
864 	struct vmw_master *vmaster = vmw_master(master);
865 
866 	master->driver_priv = NULL;
867 	kfree(vmaster);
868 }
869 
870 
871 static int vmw_master_set(struct drm_device *dev,
872 			  struct drm_file *file_priv,
873 			  bool from_open)
874 {
875 	struct vmw_private *dev_priv = vmw_priv(dev);
876 	struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
877 	struct vmw_master *active = dev_priv->active_master;
878 	struct vmw_master *vmaster = vmw_master(file_priv->master);
879 	int ret = 0;
880 
881 	if (!dev_priv->enable_fb) {
882 		ret = vmw_3d_resource_inc(dev_priv, true);
883 		if (unlikely(ret != 0))
884 			return ret;
885 		vmw_kms_save_vga(dev_priv);
886 		mutex_lock(&dev_priv->hw_mutex);
887 		vmw_write(dev_priv, SVGA_REG_TRACES, 0);
888 		mutex_unlock(&dev_priv->hw_mutex);
889 	}
890 
891 	if (active) {
892 		BUG_ON(active != &dev_priv->fbdev_master);
893 		ret = ttm_vt_lock(&active->lock, false, vmw_fp->tfile);
894 		if (unlikely(ret != 0))
895 			goto out_no_active_lock;
896 
897 		ttm_lock_set_kill(&active->lock, true, SIGTERM);
898 		ret = ttm_bo_evict_mm(&dev_priv->bdev, TTM_PL_VRAM);
899 		if (unlikely(ret != 0)) {
900 			DRM_ERROR("Unable to clean VRAM on "
901 				  "master drop.\n");
902 		}
903 
904 		dev_priv->active_master = NULL;
905 	}
906 
907 	ttm_lock_set_kill(&vmaster->lock, false, SIGTERM);
908 	if (!from_open) {
909 		ttm_vt_unlock(&vmaster->lock);
910 		BUG_ON(vmw_fp->locked_master != file_priv->master);
911 		drm_master_put(&vmw_fp->locked_master);
912 	}
913 
914 	dev_priv->active_master = vmaster;
915 
916 	return 0;
917 
918 out_no_active_lock:
919 	if (!dev_priv->enable_fb) {
920 		vmw_kms_restore_vga(dev_priv);
921 		vmw_3d_resource_dec(dev_priv, true);
922 		mutex_lock(&dev_priv->hw_mutex);
923 		vmw_write(dev_priv, SVGA_REG_TRACES, 1);
924 		mutex_unlock(&dev_priv->hw_mutex);
925 	}
926 	return ret;
927 }
928 
929 static void vmw_master_drop(struct drm_device *dev,
930 			    struct drm_file *file_priv,
931 			    bool from_release)
932 {
933 	struct vmw_private *dev_priv = vmw_priv(dev);
934 	struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
935 	struct vmw_master *vmaster = vmw_master(file_priv->master);
936 	int ret;
937 
938 	/**
939 	 * Make sure the master doesn't disappear while we have
940 	 * it locked.
941 	 */
942 
943 	vmw_fp->locked_master = drm_master_get(file_priv->master);
944 	ret = ttm_vt_lock(&vmaster->lock, false, vmw_fp->tfile);
945 	vmw_execbuf_release_pinned_bo(dev_priv);
946 
947 	if (unlikely((ret != 0))) {
948 		DRM_ERROR("Unable to lock TTM at VT switch.\n");
949 		drm_master_put(&vmw_fp->locked_master);
950 	}
951 
952 	ttm_lock_set_kill(&vmaster->lock, true, SIGTERM);
953 
954 	if (!dev_priv->enable_fb) {
955 		ret = ttm_bo_evict_mm(&dev_priv->bdev, TTM_PL_VRAM);
956 		if (unlikely(ret != 0))
957 			DRM_ERROR("Unable to clean VRAM on master drop.\n");
958 		vmw_kms_restore_vga(dev_priv);
959 		vmw_3d_resource_dec(dev_priv, true);
960 		mutex_lock(&dev_priv->hw_mutex);
961 		vmw_write(dev_priv, SVGA_REG_TRACES, 1);
962 		mutex_unlock(&dev_priv->hw_mutex);
963 	}
964 
965 	dev_priv->active_master = &dev_priv->fbdev_master;
966 	ttm_lock_set_kill(&dev_priv->fbdev_master.lock, false, SIGTERM);
967 	ttm_vt_unlock(&dev_priv->fbdev_master.lock);
968 
969 	if (dev_priv->enable_fb)
970 		vmw_fb_on(dev_priv);
971 }
972 
973 
974 static void vmw_remove(struct pci_dev *pdev)
975 {
976 	struct drm_device *dev = pci_get_drvdata(pdev);
977 
978 	drm_put_dev(dev);
979 }
980 
981 static int vmwgfx_pm_notifier(struct notifier_block *nb, unsigned long val,
982 			      void *ptr)
983 {
984 	struct vmw_private *dev_priv =
985 		container_of(nb, struct vmw_private, pm_nb);
986 	struct vmw_master *vmaster = dev_priv->active_master;
987 
988 	switch (val) {
989 	case PM_HIBERNATION_PREPARE:
990 	case PM_SUSPEND_PREPARE:
991 		ttm_suspend_lock(&vmaster->lock);
992 
993 		/**
994 		 * This empties VRAM and unbinds all GMR bindings.
995 		 * Buffer contents is moved to swappable memory.
996 		 */
997 		vmw_execbuf_release_pinned_bo(dev_priv);
998 		vmw_resource_evict_all(dev_priv);
999 		ttm_bo_swapout_all(&dev_priv->bdev);
1000 
1001 		break;
1002 	case PM_POST_HIBERNATION:
1003 	case PM_POST_SUSPEND:
1004 	case PM_POST_RESTORE:
1005 		ttm_suspend_unlock(&vmaster->lock);
1006 
1007 		break;
1008 	case PM_RESTORE_PREPARE:
1009 		break;
1010 	default:
1011 		break;
1012 	}
1013 	return 0;
1014 }
1015 
1016 /**
1017  * These might not be needed with the virtual SVGA device.
1018  */
1019 
1020 static int vmw_pci_suspend(struct pci_dev *pdev, pm_message_t state)
1021 {
1022 	struct drm_device *dev = pci_get_drvdata(pdev);
1023 	struct vmw_private *dev_priv = vmw_priv(dev);
1024 
1025 	if (dev_priv->num_3d_resources != 0) {
1026 		DRM_INFO("Can't suspend or hibernate "
1027 			 "while 3D resources are active.\n");
1028 		return -EBUSY;
1029 	}
1030 
1031 	pci_save_state(pdev);
1032 	pci_disable_device(pdev);
1033 	pci_set_power_state(pdev, PCI_D3hot);
1034 	return 0;
1035 }
1036 
1037 static int vmw_pci_resume(struct pci_dev *pdev)
1038 {
1039 	pci_set_power_state(pdev, PCI_D0);
1040 	pci_restore_state(pdev);
1041 	return pci_enable_device(pdev);
1042 }
1043 
1044 static int vmw_pm_suspend(struct device *kdev)
1045 {
1046 	struct pci_dev *pdev = to_pci_dev(kdev);
1047 	struct pm_message dummy;
1048 
1049 	dummy.event = 0;
1050 
1051 	return vmw_pci_suspend(pdev, dummy);
1052 }
1053 
1054 static int vmw_pm_resume(struct device *kdev)
1055 {
1056 	struct pci_dev *pdev = to_pci_dev(kdev);
1057 
1058 	return vmw_pci_resume(pdev);
1059 }
1060 
1061 static int vmw_pm_prepare(struct device *kdev)
1062 {
1063 	struct pci_dev *pdev = to_pci_dev(kdev);
1064 	struct drm_device *dev = pci_get_drvdata(pdev);
1065 	struct vmw_private *dev_priv = vmw_priv(dev);
1066 
1067 	/**
1068 	 * Release 3d reference held by fbdev and potentially
1069 	 * stop fifo.
1070 	 */
1071 	dev_priv->suspended = true;
1072 	if (dev_priv->enable_fb)
1073 			vmw_3d_resource_dec(dev_priv, true);
1074 
1075 	if (dev_priv->num_3d_resources != 0) {
1076 
1077 		DRM_INFO("Can't suspend or hibernate "
1078 			 "while 3D resources are active.\n");
1079 
1080 		if (dev_priv->enable_fb)
1081 			vmw_3d_resource_inc(dev_priv, true);
1082 		dev_priv->suspended = false;
1083 		return -EBUSY;
1084 	}
1085 
1086 	return 0;
1087 }
1088 
1089 static void vmw_pm_complete(struct device *kdev)
1090 {
1091 	struct pci_dev *pdev = to_pci_dev(kdev);
1092 	struct drm_device *dev = pci_get_drvdata(pdev);
1093 	struct vmw_private *dev_priv = vmw_priv(dev);
1094 
1095 	mutex_lock(&dev_priv->hw_mutex);
1096 	vmw_write(dev_priv, SVGA_REG_ID, SVGA_ID_2);
1097 	(void) vmw_read(dev_priv, SVGA_REG_ID);
1098 	mutex_unlock(&dev_priv->hw_mutex);
1099 
1100 	/**
1101 	 * Reclaim 3d reference held by fbdev and potentially
1102 	 * start fifo.
1103 	 */
1104 	if (dev_priv->enable_fb)
1105 			vmw_3d_resource_inc(dev_priv, false);
1106 
1107 	dev_priv->suspended = false;
1108 }
1109 
1110 static const struct dev_pm_ops vmw_pm_ops = {
1111 	.prepare = vmw_pm_prepare,
1112 	.complete = vmw_pm_complete,
1113 	.suspend = vmw_pm_suspend,
1114 	.resume = vmw_pm_resume,
1115 };
1116 
1117 static const struct file_operations vmwgfx_driver_fops = {
1118 	.owner = THIS_MODULE,
1119 	.open = drm_open,
1120 	.release = drm_release,
1121 	.unlocked_ioctl = vmw_unlocked_ioctl,
1122 	.mmap = vmw_mmap,
1123 	.poll = vmw_fops_poll,
1124 	.read = vmw_fops_read,
1125 	.fasync = drm_fasync,
1126 #if defined(CONFIG_COMPAT)
1127 	.compat_ioctl = drm_compat_ioctl,
1128 #endif
1129 	.llseek = noop_llseek,
1130 };
1131 
1132 static struct drm_driver driver = {
1133 	.driver_features = DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED |
1134 	DRIVER_MODESET,
1135 	.load = vmw_driver_load,
1136 	.unload = vmw_driver_unload,
1137 	.firstopen = vmw_firstopen,
1138 	.lastclose = vmw_lastclose,
1139 	.irq_preinstall = vmw_irq_preinstall,
1140 	.irq_postinstall = vmw_irq_postinstall,
1141 	.irq_uninstall = vmw_irq_uninstall,
1142 	.irq_handler = vmw_irq_handler,
1143 	.get_vblank_counter = vmw_get_vblank_counter,
1144 	.enable_vblank = vmw_enable_vblank,
1145 	.disable_vblank = vmw_disable_vblank,
1146 	.ioctls = vmw_ioctls,
1147 	.num_ioctls = DRM_ARRAY_SIZE(vmw_ioctls),
1148 	.dma_quiescent = NULL,	/*vmw_dma_quiescent, */
1149 	.master_create = vmw_master_create,
1150 	.master_destroy = vmw_master_destroy,
1151 	.master_set = vmw_master_set,
1152 	.master_drop = vmw_master_drop,
1153 	.open = vmw_driver_open,
1154 	.preclose = vmw_preclose,
1155 	.postclose = vmw_postclose,
1156 
1157 	.dumb_create = vmw_dumb_create,
1158 	.dumb_map_offset = vmw_dumb_map_offset,
1159 	.dumb_destroy = vmw_dumb_destroy,
1160 
1161 	.fops = &vmwgfx_driver_fops,
1162 	.name = VMWGFX_DRIVER_NAME,
1163 	.desc = VMWGFX_DRIVER_DESC,
1164 	.date = VMWGFX_DRIVER_DATE,
1165 	.major = VMWGFX_DRIVER_MAJOR,
1166 	.minor = VMWGFX_DRIVER_MINOR,
1167 	.patchlevel = VMWGFX_DRIVER_PATCHLEVEL
1168 };
1169 
1170 static struct pci_driver vmw_pci_driver = {
1171 	.name = VMWGFX_DRIVER_NAME,
1172 	.id_table = vmw_pci_id_list,
1173 	.probe = vmw_probe,
1174 	.remove = vmw_remove,
1175 	.driver = {
1176 		.pm = &vmw_pm_ops
1177 	}
1178 };
1179 
1180 static int vmw_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1181 {
1182 	return drm_get_pci_dev(pdev, ent, &driver);
1183 }
1184 
1185 static int __init vmwgfx_init(void)
1186 {
1187 	int ret;
1188 	ret = drm_pci_init(&driver, &vmw_pci_driver);
1189 	if (ret)
1190 		DRM_ERROR("Failed initializing DRM.\n");
1191 	return ret;
1192 }
1193 
1194 static void __exit vmwgfx_exit(void)
1195 {
1196 	drm_pci_exit(&driver, &vmw_pci_driver);
1197 }
1198 
1199 module_init(vmwgfx_init);
1200 module_exit(vmwgfx_exit);
1201 
1202 MODULE_AUTHOR("VMware Inc. and others");
1203 MODULE_DESCRIPTION("Standalone drm driver for the VMware SVGA device");
1204 MODULE_LICENSE("GPL and additional rights");
1205 MODULE_VERSION(__stringify(VMWGFX_DRIVER_MAJOR) "."
1206 	       __stringify(VMWGFX_DRIVER_MINOR) "."
1207 	       __stringify(VMWGFX_DRIVER_PATCHLEVEL) "."
1208 	       "0");
1209