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 "drmP.h"
30 #include "vmwgfx_drv.h"
31 #include "ttm/ttm_placement.h"
32 #include "ttm/ttm_bo_driver.h"
33 #include "ttm/ttm_object.h"
34 #include "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 
186 static int enable_fbdev;
187 
188 static int vmw_probe(struct pci_dev *, const struct pci_device_id *);
189 static void vmw_master_init(struct vmw_master *);
190 static int vmwgfx_pm_notifier(struct notifier_block *nb, unsigned long val,
191 			      void *ptr);
192 
193 MODULE_PARM_DESC(enable_fbdev, "Enable vmwgfx fbdev");
194 module_param_named(enable_fbdev, enable_fbdev, int, 0600);
195 
196 static void vmw_print_capabilities(uint32_t capabilities)
197 {
198 	DRM_INFO("Capabilities:\n");
199 	if (capabilities & SVGA_CAP_RECT_COPY)
200 		DRM_INFO("  Rect copy.\n");
201 	if (capabilities & SVGA_CAP_CURSOR)
202 		DRM_INFO("  Cursor.\n");
203 	if (capabilities & SVGA_CAP_CURSOR_BYPASS)
204 		DRM_INFO("  Cursor bypass.\n");
205 	if (capabilities & SVGA_CAP_CURSOR_BYPASS_2)
206 		DRM_INFO("  Cursor bypass 2.\n");
207 	if (capabilities & SVGA_CAP_8BIT_EMULATION)
208 		DRM_INFO("  8bit emulation.\n");
209 	if (capabilities & SVGA_CAP_ALPHA_CURSOR)
210 		DRM_INFO("  Alpha cursor.\n");
211 	if (capabilities & SVGA_CAP_3D)
212 		DRM_INFO("  3D.\n");
213 	if (capabilities & SVGA_CAP_EXTENDED_FIFO)
214 		DRM_INFO("  Extended Fifo.\n");
215 	if (capabilities & SVGA_CAP_MULTIMON)
216 		DRM_INFO("  Multimon.\n");
217 	if (capabilities & SVGA_CAP_PITCHLOCK)
218 		DRM_INFO("  Pitchlock.\n");
219 	if (capabilities & SVGA_CAP_IRQMASK)
220 		DRM_INFO("  Irq mask.\n");
221 	if (capabilities & SVGA_CAP_DISPLAY_TOPOLOGY)
222 		DRM_INFO("  Display Topology.\n");
223 	if (capabilities & SVGA_CAP_GMR)
224 		DRM_INFO("  GMR.\n");
225 	if (capabilities & SVGA_CAP_TRACES)
226 		DRM_INFO("  Traces.\n");
227 	if (capabilities & SVGA_CAP_GMR2)
228 		DRM_INFO("  GMR2.\n");
229 	if (capabilities & SVGA_CAP_SCREEN_OBJECT_2)
230 		DRM_INFO("  Screen Object 2.\n");
231 }
232 
233 
234 /**
235  * vmw_execbuf_prepare_dummy_query - Initialize a query result structure at
236  * the start of a buffer object.
237  *
238  * @dev_priv: The device private structure.
239  *
240  * This function will idle the buffer using an uninterruptible wait, then
241  * map the first page and initialize a pending occlusion query result structure,
242  * Finally it will unmap the buffer.
243  *
244  * TODO: Since we're only mapping a single page, we should optimize the map
245  * to use kmap_atomic / iomap_atomic.
246  */
247 static void vmw_dummy_query_bo_prepare(struct vmw_private *dev_priv)
248 {
249 	struct ttm_bo_kmap_obj map;
250 	volatile SVGA3dQueryResult *result;
251 	bool dummy;
252 	int ret;
253 	struct ttm_bo_device *bdev = &dev_priv->bdev;
254 	struct ttm_buffer_object *bo = dev_priv->dummy_query_bo;
255 
256 	ttm_bo_reserve(bo, false, false, false, 0);
257 	spin_lock(&bdev->fence_lock);
258 	ret = ttm_bo_wait(bo, false, false, false);
259 	spin_unlock(&bdev->fence_lock);
260 	if (unlikely(ret != 0))
261 		(void) vmw_fallback_wait(dev_priv, false, true, 0, false,
262 					 10*HZ);
263 
264 	ret = ttm_bo_kmap(bo, 0, 1, &map);
265 	if (likely(ret == 0)) {
266 		result = ttm_kmap_obj_virtual(&map, &dummy);
267 		result->totalSize = sizeof(*result);
268 		result->state = SVGA3D_QUERYSTATE_PENDING;
269 		result->result32 = 0xff;
270 		ttm_bo_kunmap(&map);
271 	} else
272 		DRM_ERROR("Dummy query buffer map failed.\n");
273 	ttm_bo_unreserve(bo);
274 }
275 
276 
277 /**
278  * vmw_dummy_query_bo_create - create a bo to hold a dummy query result
279  *
280  * @dev_priv: A device private structure.
281  *
282  * This function creates a small buffer object that holds the query
283  * result for dummy queries emitted as query barriers.
284  * No interruptible waits are done within this function.
285  *
286  * Returns an error if bo creation fails.
287  */
288 static int vmw_dummy_query_bo_create(struct vmw_private *dev_priv)
289 {
290 	return ttm_bo_create(&dev_priv->bdev,
291 			     PAGE_SIZE,
292 			     ttm_bo_type_device,
293 			     &vmw_vram_sys_placement,
294 			     0, 0, false, NULL,
295 			     &dev_priv->dummy_query_bo);
296 }
297 
298 
299 static int vmw_request_device(struct vmw_private *dev_priv)
300 {
301 	int ret;
302 
303 	ret = vmw_fifo_init(dev_priv, &dev_priv->fifo);
304 	if (unlikely(ret != 0)) {
305 		DRM_ERROR("Unable to initialize FIFO.\n");
306 		return ret;
307 	}
308 	vmw_fence_fifo_up(dev_priv->fman);
309 	ret = vmw_dummy_query_bo_create(dev_priv);
310 	if (unlikely(ret != 0))
311 		goto out_no_query_bo;
312 	vmw_dummy_query_bo_prepare(dev_priv);
313 
314 	return 0;
315 
316 out_no_query_bo:
317 	vmw_fence_fifo_down(dev_priv->fman);
318 	vmw_fifo_release(dev_priv, &dev_priv->fifo);
319 	return ret;
320 }
321 
322 static void vmw_release_device(struct vmw_private *dev_priv)
323 {
324 	/*
325 	 * Previous destructions should've released
326 	 * the pinned bo.
327 	 */
328 
329 	BUG_ON(dev_priv->pinned_bo != NULL);
330 
331 	ttm_bo_unref(&dev_priv->dummy_query_bo);
332 	vmw_fence_fifo_down(dev_priv->fman);
333 	vmw_fifo_release(dev_priv, &dev_priv->fifo);
334 }
335 
336 /**
337  * Increase the 3d resource refcount.
338  * If the count was prevously zero, initialize the fifo, switching to svga
339  * mode. Note that the master holds a ref as well, and may request an
340  * explicit switch to svga mode if fb is not running, using @unhide_svga.
341  */
342 int vmw_3d_resource_inc(struct vmw_private *dev_priv,
343 			bool unhide_svga)
344 {
345 	int ret = 0;
346 
347 	mutex_lock(&dev_priv->release_mutex);
348 	if (unlikely(dev_priv->num_3d_resources++ == 0)) {
349 		ret = vmw_request_device(dev_priv);
350 		if (unlikely(ret != 0))
351 			--dev_priv->num_3d_resources;
352 	} else if (unhide_svga) {
353 		mutex_lock(&dev_priv->hw_mutex);
354 		vmw_write(dev_priv, SVGA_REG_ENABLE,
355 			  vmw_read(dev_priv, SVGA_REG_ENABLE) &
356 			  ~SVGA_REG_ENABLE_HIDE);
357 		mutex_unlock(&dev_priv->hw_mutex);
358 	}
359 
360 	mutex_unlock(&dev_priv->release_mutex);
361 	return ret;
362 }
363 
364 /**
365  * Decrease the 3d resource refcount.
366  * If the count reaches zero, disable the fifo, switching to vga mode.
367  * Note that the master holds a refcount as well, and may request an
368  * explicit switch to vga mode when it releases its refcount to account
369  * for the situation of an X server vt switch to VGA with 3d resources
370  * active.
371  */
372 void vmw_3d_resource_dec(struct vmw_private *dev_priv,
373 			 bool hide_svga)
374 {
375 	int32_t n3d;
376 
377 	mutex_lock(&dev_priv->release_mutex);
378 	if (unlikely(--dev_priv->num_3d_resources == 0))
379 		vmw_release_device(dev_priv);
380 	else if (hide_svga) {
381 		mutex_lock(&dev_priv->hw_mutex);
382 		vmw_write(dev_priv, SVGA_REG_ENABLE,
383 			  vmw_read(dev_priv, SVGA_REG_ENABLE) |
384 			  SVGA_REG_ENABLE_HIDE);
385 		mutex_unlock(&dev_priv->hw_mutex);
386 	}
387 
388 	n3d = (int32_t) dev_priv->num_3d_resources;
389 	mutex_unlock(&dev_priv->release_mutex);
390 
391 	BUG_ON(n3d < 0);
392 }
393 
394 /**
395  * Sets the initial_[width|height] fields on the given vmw_private.
396  *
397  * It does so by reading SVGA_REG_[WIDTH|HEIGHT] regs and then
398  * clamping the value to fb_max_[width|height] fields and the
399  * VMW_MIN_INITIAL_[WIDTH|HEIGHT].
400  * If the values appear to be invalid, set them to
401  * VMW_MIN_INITIAL_[WIDTH|HEIGHT].
402  */
403 static void vmw_get_initial_size(struct vmw_private *dev_priv)
404 {
405 	uint32_t width;
406 	uint32_t height;
407 
408 	width = vmw_read(dev_priv, SVGA_REG_WIDTH);
409 	height = vmw_read(dev_priv, SVGA_REG_HEIGHT);
410 
411 	width = max_t(uint32_t, width, VMW_MIN_INITIAL_WIDTH);
412 	height = max_t(uint32_t, height, VMW_MIN_INITIAL_HEIGHT);
413 
414 	if (width > dev_priv->fb_max_width ||
415 	    height > dev_priv->fb_max_height) {
416 
417 		/*
418 		 * This is a host error and shouldn't occur.
419 		 */
420 
421 		width = VMW_MIN_INITIAL_WIDTH;
422 		height = VMW_MIN_INITIAL_HEIGHT;
423 	}
424 
425 	dev_priv->initial_width = width;
426 	dev_priv->initial_height = height;
427 }
428 
429 static int vmw_driver_load(struct drm_device *dev, unsigned long chipset)
430 {
431 	struct vmw_private *dev_priv;
432 	int ret;
433 	uint32_t svga_id;
434 
435 	dev_priv = kzalloc(sizeof(*dev_priv), GFP_KERNEL);
436 	if (unlikely(dev_priv == NULL)) {
437 		DRM_ERROR("Failed allocating a device private struct.\n");
438 		return -ENOMEM;
439 	}
440 	memset(dev_priv, 0, sizeof(*dev_priv));
441 
442 	pci_set_master(dev->pdev);
443 
444 	dev_priv->dev = dev;
445 	dev_priv->vmw_chipset = chipset;
446 	dev_priv->last_read_seqno = (uint32_t) -100;
447 	mutex_init(&dev_priv->hw_mutex);
448 	mutex_init(&dev_priv->cmdbuf_mutex);
449 	mutex_init(&dev_priv->release_mutex);
450 	rwlock_init(&dev_priv->resource_lock);
451 	idr_init(&dev_priv->context_idr);
452 	idr_init(&dev_priv->surface_idr);
453 	idr_init(&dev_priv->stream_idr);
454 	mutex_init(&dev_priv->init_mutex);
455 	init_waitqueue_head(&dev_priv->fence_queue);
456 	init_waitqueue_head(&dev_priv->fifo_queue);
457 	dev_priv->fence_queue_waiters = 0;
458 	atomic_set(&dev_priv->fifo_queue_waiters, 0);
459 	INIT_LIST_HEAD(&dev_priv->surface_lru);
460 	dev_priv->used_memory_size = 0;
461 
462 	dev_priv->io_start = pci_resource_start(dev->pdev, 0);
463 	dev_priv->vram_start = pci_resource_start(dev->pdev, 1);
464 	dev_priv->mmio_start = pci_resource_start(dev->pdev, 2);
465 
466 	dev_priv->enable_fb = enable_fbdev;
467 
468 	mutex_lock(&dev_priv->hw_mutex);
469 
470 	vmw_write(dev_priv, SVGA_REG_ID, SVGA_ID_2);
471 	svga_id = vmw_read(dev_priv, SVGA_REG_ID);
472 	if (svga_id != SVGA_ID_2) {
473 		ret = -ENOSYS;
474 		DRM_ERROR("Unsupported SVGA ID 0x%x\n", svga_id);
475 		mutex_unlock(&dev_priv->hw_mutex);
476 		goto out_err0;
477 	}
478 
479 	dev_priv->capabilities = vmw_read(dev_priv, SVGA_REG_CAPABILITIES);
480 
481 	dev_priv->vram_size = vmw_read(dev_priv, SVGA_REG_VRAM_SIZE);
482 	dev_priv->mmio_size = vmw_read(dev_priv, SVGA_REG_MEM_SIZE);
483 	dev_priv->fb_max_width = vmw_read(dev_priv, SVGA_REG_MAX_WIDTH);
484 	dev_priv->fb_max_height = vmw_read(dev_priv, SVGA_REG_MAX_HEIGHT);
485 
486 	vmw_get_initial_size(dev_priv);
487 
488 	if (dev_priv->capabilities & SVGA_CAP_GMR) {
489 		dev_priv->max_gmr_descriptors =
490 			vmw_read(dev_priv,
491 				 SVGA_REG_GMR_MAX_DESCRIPTOR_LENGTH);
492 		dev_priv->max_gmr_ids =
493 			vmw_read(dev_priv, SVGA_REG_GMR_MAX_IDS);
494 	}
495 	if (dev_priv->capabilities & SVGA_CAP_GMR2) {
496 		dev_priv->max_gmr_pages =
497 			vmw_read(dev_priv, SVGA_REG_GMRS_MAX_PAGES);
498 		dev_priv->memory_size =
499 			vmw_read(dev_priv, SVGA_REG_MEMORY_SIZE);
500 		dev_priv->memory_size -= dev_priv->vram_size;
501 	} else {
502 		/*
503 		 * An arbitrary limit of 512MiB on surface
504 		 * memory. But all HWV8 hardware supports GMR2.
505 		 */
506 		dev_priv->memory_size = 512*1024*1024;
507 	}
508 
509 	mutex_unlock(&dev_priv->hw_mutex);
510 
511 	vmw_print_capabilities(dev_priv->capabilities);
512 
513 	if (dev_priv->capabilities & SVGA_CAP_GMR) {
514 		DRM_INFO("Max GMR ids is %u\n",
515 			 (unsigned)dev_priv->max_gmr_ids);
516 		DRM_INFO("Max GMR descriptors is %u\n",
517 			 (unsigned)dev_priv->max_gmr_descriptors);
518 	}
519 	if (dev_priv->capabilities & SVGA_CAP_GMR2) {
520 		DRM_INFO("Max number of GMR pages is %u\n",
521 			 (unsigned)dev_priv->max_gmr_pages);
522 		DRM_INFO("Max dedicated hypervisor surface memory is %u kiB\n",
523 			 (unsigned)dev_priv->memory_size / 1024);
524 	}
525 	DRM_INFO("VRAM at 0x%08x size is %u kiB\n",
526 		 dev_priv->vram_start, dev_priv->vram_size / 1024);
527 	DRM_INFO("MMIO at 0x%08x size is %u kiB\n",
528 		 dev_priv->mmio_start, dev_priv->mmio_size / 1024);
529 
530 	ret = vmw_ttm_global_init(dev_priv);
531 	if (unlikely(ret != 0))
532 		goto out_err0;
533 
534 
535 	vmw_master_init(&dev_priv->fbdev_master);
536 	ttm_lock_set_kill(&dev_priv->fbdev_master.lock, false, SIGTERM);
537 	dev_priv->active_master = &dev_priv->fbdev_master;
538 
539 
540 	ret = ttm_bo_device_init(&dev_priv->bdev,
541 				 dev_priv->bo_global_ref.ref.object,
542 				 &vmw_bo_driver, VMWGFX_FILE_PAGE_OFFSET,
543 				 false);
544 	if (unlikely(ret != 0)) {
545 		DRM_ERROR("Failed initializing TTM buffer object driver.\n");
546 		goto out_err1;
547 	}
548 
549 	ret = ttm_bo_init_mm(&dev_priv->bdev, TTM_PL_VRAM,
550 			     (dev_priv->vram_size >> PAGE_SHIFT));
551 	if (unlikely(ret != 0)) {
552 		DRM_ERROR("Failed initializing memory manager for VRAM.\n");
553 		goto out_err2;
554 	}
555 
556 	dev_priv->has_gmr = true;
557 	if (ttm_bo_init_mm(&dev_priv->bdev, VMW_PL_GMR,
558 			   dev_priv->max_gmr_ids) != 0) {
559 		DRM_INFO("No GMR memory available. "
560 			 "Graphics memory resources are very limited.\n");
561 		dev_priv->has_gmr = false;
562 	}
563 
564 	dev_priv->mmio_mtrr = drm_mtrr_add(dev_priv->mmio_start,
565 					   dev_priv->mmio_size, DRM_MTRR_WC);
566 
567 	dev_priv->mmio_virt = ioremap_wc(dev_priv->mmio_start,
568 					 dev_priv->mmio_size);
569 
570 	if (unlikely(dev_priv->mmio_virt == NULL)) {
571 		ret = -ENOMEM;
572 		DRM_ERROR("Failed mapping MMIO.\n");
573 		goto out_err3;
574 	}
575 
576 	/* Need mmio memory to check for fifo pitchlock cap. */
577 	if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY) &&
578 	    !(dev_priv->capabilities & SVGA_CAP_PITCHLOCK) &&
579 	    !vmw_fifo_have_pitchlock(dev_priv)) {
580 		ret = -ENOSYS;
581 		DRM_ERROR("Hardware has no pitchlock\n");
582 		goto out_err4;
583 	}
584 
585 	dev_priv->tdev = ttm_object_device_init
586 	    (dev_priv->mem_global_ref.object, 12);
587 
588 	if (unlikely(dev_priv->tdev == NULL)) {
589 		DRM_ERROR("Unable to initialize TTM object management.\n");
590 		ret = -ENOMEM;
591 		goto out_err4;
592 	}
593 
594 	dev->dev_private = dev_priv;
595 
596 	ret = pci_request_regions(dev->pdev, "vmwgfx probe");
597 	dev_priv->stealth = (ret != 0);
598 	if (dev_priv->stealth) {
599 		/**
600 		 * Request at least the mmio PCI resource.
601 		 */
602 
603 		DRM_INFO("It appears like vesafb is loaded. "
604 			 "Ignore above error if any.\n");
605 		ret = pci_request_region(dev->pdev, 2, "vmwgfx stealth probe");
606 		if (unlikely(ret != 0)) {
607 			DRM_ERROR("Failed reserving the SVGA MMIO resource.\n");
608 			goto out_no_device;
609 		}
610 	}
611 
612 	dev_priv->fman = vmw_fence_manager_init(dev_priv);
613 	if (unlikely(dev_priv->fman == NULL))
614 		goto out_no_fman;
615 
616 	/* Need to start the fifo to check if we can do screen objects */
617 	ret = vmw_3d_resource_inc(dev_priv, true);
618 	if (unlikely(ret != 0))
619 		goto out_no_fifo;
620 	vmw_kms_save_vga(dev_priv);
621 
622 	/* Start kms and overlay systems, needs fifo. */
623 	ret = vmw_kms_init(dev_priv);
624 	if (unlikely(ret != 0))
625 		goto out_no_kms;
626 	vmw_overlay_init(dev_priv);
627 
628 	/* 3D Depends on Screen Objects being used. */
629 	DRM_INFO("Detected %sdevice 3D availability.\n",
630 		 vmw_fifo_have_3d(dev_priv) ?
631 		 "" : "no ");
632 
633 	/* We might be done with the fifo now */
634 	if (dev_priv->enable_fb) {
635 		vmw_fb_init(dev_priv);
636 	} else {
637 		vmw_kms_restore_vga(dev_priv);
638 		vmw_3d_resource_dec(dev_priv, true);
639 	}
640 
641 	if (dev_priv->capabilities & SVGA_CAP_IRQMASK) {
642 		ret = drm_irq_install(dev);
643 		if (unlikely(ret != 0)) {
644 			DRM_ERROR("Failed installing irq: %d\n", ret);
645 			goto out_no_irq;
646 		}
647 	}
648 
649 	dev_priv->pm_nb.notifier_call = vmwgfx_pm_notifier;
650 	register_pm_notifier(&dev_priv->pm_nb);
651 
652 	return 0;
653 
654 out_no_irq:
655 	if (dev_priv->enable_fb)
656 		vmw_fb_close(dev_priv);
657 	vmw_overlay_close(dev_priv);
658 	vmw_kms_close(dev_priv);
659 out_no_kms:
660 	/* We still have a 3D resource reference held */
661 	if (dev_priv->enable_fb) {
662 		vmw_kms_restore_vga(dev_priv);
663 		vmw_3d_resource_dec(dev_priv, false);
664 	}
665 out_no_fifo:
666 	vmw_fence_manager_takedown(dev_priv->fman);
667 out_no_fman:
668 	if (dev_priv->stealth)
669 		pci_release_region(dev->pdev, 2);
670 	else
671 		pci_release_regions(dev->pdev);
672 out_no_device:
673 	ttm_object_device_release(&dev_priv->tdev);
674 out_err4:
675 	iounmap(dev_priv->mmio_virt);
676 out_err3:
677 	drm_mtrr_del(dev_priv->mmio_mtrr, dev_priv->mmio_start,
678 		     dev_priv->mmio_size, DRM_MTRR_WC);
679 	if (dev_priv->has_gmr)
680 		(void) ttm_bo_clean_mm(&dev_priv->bdev, VMW_PL_GMR);
681 	(void)ttm_bo_clean_mm(&dev_priv->bdev, TTM_PL_VRAM);
682 out_err2:
683 	(void)ttm_bo_device_release(&dev_priv->bdev);
684 out_err1:
685 	vmw_ttm_global_release(dev_priv);
686 out_err0:
687 	idr_destroy(&dev_priv->surface_idr);
688 	idr_destroy(&dev_priv->context_idr);
689 	idr_destroy(&dev_priv->stream_idr);
690 	kfree(dev_priv);
691 	return ret;
692 }
693 
694 static int vmw_driver_unload(struct drm_device *dev)
695 {
696 	struct vmw_private *dev_priv = vmw_priv(dev);
697 
698 	unregister_pm_notifier(&dev_priv->pm_nb);
699 
700 	if (dev_priv->ctx.cmd_bounce)
701 		vfree(dev_priv->ctx.cmd_bounce);
702 	if (dev_priv->capabilities & SVGA_CAP_IRQMASK)
703 		drm_irq_uninstall(dev_priv->dev);
704 	if (dev_priv->enable_fb) {
705 		vmw_fb_close(dev_priv);
706 		vmw_kms_restore_vga(dev_priv);
707 		vmw_3d_resource_dec(dev_priv, false);
708 	}
709 	vmw_kms_close(dev_priv);
710 	vmw_overlay_close(dev_priv);
711 	vmw_fence_manager_takedown(dev_priv->fman);
712 	if (dev_priv->stealth)
713 		pci_release_region(dev->pdev, 2);
714 	else
715 		pci_release_regions(dev->pdev);
716 
717 	ttm_object_device_release(&dev_priv->tdev);
718 	iounmap(dev_priv->mmio_virt);
719 	drm_mtrr_del(dev_priv->mmio_mtrr, dev_priv->mmio_start,
720 		     dev_priv->mmio_size, DRM_MTRR_WC);
721 	if (dev_priv->has_gmr)
722 		(void)ttm_bo_clean_mm(&dev_priv->bdev, VMW_PL_GMR);
723 	(void)ttm_bo_clean_mm(&dev_priv->bdev, TTM_PL_VRAM);
724 	(void)ttm_bo_device_release(&dev_priv->bdev);
725 	vmw_ttm_global_release(dev_priv);
726 	idr_destroy(&dev_priv->surface_idr);
727 	idr_destroy(&dev_priv->context_idr);
728 	idr_destroy(&dev_priv->stream_idr);
729 
730 	kfree(dev_priv);
731 
732 	return 0;
733 }
734 
735 static void vmw_preclose(struct drm_device *dev,
736 			 struct drm_file *file_priv)
737 {
738 	struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
739 	struct vmw_private *dev_priv = vmw_priv(dev);
740 
741 	vmw_event_fence_fpriv_gone(dev_priv->fman, &vmw_fp->fence_events);
742 }
743 
744 static void vmw_postclose(struct drm_device *dev,
745 			 struct drm_file *file_priv)
746 {
747 	struct vmw_fpriv *vmw_fp;
748 
749 	vmw_fp = vmw_fpriv(file_priv);
750 	ttm_object_file_release(&vmw_fp->tfile);
751 	if (vmw_fp->locked_master)
752 		drm_master_put(&vmw_fp->locked_master);
753 	kfree(vmw_fp);
754 }
755 
756 static int vmw_driver_open(struct drm_device *dev, struct drm_file *file_priv)
757 {
758 	struct vmw_private *dev_priv = vmw_priv(dev);
759 	struct vmw_fpriv *vmw_fp;
760 	int ret = -ENOMEM;
761 
762 	vmw_fp = kzalloc(sizeof(*vmw_fp), GFP_KERNEL);
763 	if (unlikely(vmw_fp == NULL))
764 		return ret;
765 
766 	INIT_LIST_HEAD(&vmw_fp->fence_events);
767 	vmw_fp->tfile = ttm_object_file_init(dev_priv->tdev, 10);
768 	if (unlikely(vmw_fp->tfile == NULL))
769 		goto out_no_tfile;
770 
771 	file_priv->driver_priv = vmw_fp;
772 	dev_priv->bdev.dev_mapping = dev->dev_mapping;
773 
774 	return 0;
775 
776 out_no_tfile:
777 	kfree(vmw_fp);
778 	return ret;
779 }
780 
781 static long vmw_unlocked_ioctl(struct file *filp, unsigned int cmd,
782 			       unsigned long arg)
783 {
784 	struct drm_file *file_priv = filp->private_data;
785 	struct drm_device *dev = file_priv->minor->dev;
786 	unsigned int nr = DRM_IOCTL_NR(cmd);
787 
788 	/*
789 	 * Do extra checking on driver private ioctls.
790 	 */
791 
792 	if ((nr >= DRM_COMMAND_BASE) && (nr < DRM_COMMAND_END)
793 	    && (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls)) {
794 		struct drm_ioctl_desc *ioctl =
795 		    &vmw_ioctls[nr - DRM_COMMAND_BASE];
796 
797 		if (unlikely(ioctl->cmd_drv != cmd)) {
798 			DRM_ERROR("Invalid command format, ioctl %d\n",
799 				  nr - DRM_COMMAND_BASE);
800 			return -EINVAL;
801 		}
802 	}
803 
804 	return drm_ioctl(filp, cmd, arg);
805 }
806 
807 static int vmw_firstopen(struct drm_device *dev)
808 {
809 	struct vmw_private *dev_priv = vmw_priv(dev);
810 	dev_priv->is_opened = true;
811 
812 	return 0;
813 }
814 
815 static void vmw_lastclose(struct drm_device *dev)
816 {
817 	struct vmw_private *dev_priv = vmw_priv(dev);
818 	struct drm_crtc *crtc;
819 	struct drm_mode_set set;
820 	int ret;
821 
822 	/**
823 	 * Do nothing on the lastclose call from drm_unload.
824 	 */
825 
826 	if (!dev_priv->is_opened)
827 		return;
828 
829 	dev_priv->is_opened = false;
830 	set.x = 0;
831 	set.y = 0;
832 	set.fb = NULL;
833 	set.mode = NULL;
834 	set.connectors = NULL;
835 	set.num_connectors = 0;
836 
837 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
838 		set.crtc = crtc;
839 		ret = crtc->funcs->set_config(&set);
840 		WARN_ON(ret != 0);
841 	}
842 
843 }
844 
845 static void vmw_master_init(struct vmw_master *vmaster)
846 {
847 	ttm_lock_init(&vmaster->lock);
848 	INIT_LIST_HEAD(&vmaster->fb_surf);
849 	mutex_init(&vmaster->fb_surf_mutex);
850 }
851 
852 static int vmw_master_create(struct drm_device *dev,
853 			     struct drm_master *master)
854 {
855 	struct vmw_master *vmaster;
856 
857 	vmaster = kzalloc(sizeof(*vmaster), GFP_KERNEL);
858 	if (unlikely(vmaster == NULL))
859 		return -ENOMEM;
860 
861 	vmw_master_init(vmaster);
862 	ttm_lock_set_kill(&vmaster->lock, true, SIGTERM);
863 	master->driver_priv = vmaster;
864 
865 	return 0;
866 }
867 
868 static void vmw_master_destroy(struct drm_device *dev,
869 			       struct drm_master *master)
870 {
871 	struct vmw_master *vmaster = vmw_master(master);
872 
873 	master->driver_priv = NULL;
874 	kfree(vmaster);
875 }
876 
877 
878 static int vmw_master_set(struct drm_device *dev,
879 			  struct drm_file *file_priv,
880 			  bool from_open)
881 {
882 	struct vmw_private *dev_priv = vmw_priv(dev);
883 	struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
884 	struct vmw_master *active = dev_priv->active_master;
885 	struct vmw_master *vmaster = vmw_master(file_priv->master);
886 	int ret = 0;
887 
888 	if (!dev_priv->enable_fb) {
889 		ret = vmw_3d_resource_inc(dev_priv, true);
890 		if (unlikely(ret != 0))
891 			return ret;
892 		vmw_kms_save_vga(dev_priv);
893 		mutex_lock(&dev_priv->hw_mutex);
894 		vmw_write(dev_priv, SVGA_REG_TRACES, 0);
895 		mutex_unlock(&dev_priv->hw_mutex);
896 	}
897 
898 	if (active) {
899 		BUG_ON(active != &dev_priv->fbdev_master);
900 		ret = ttm_vt_lock(&active->lock, false, vmw_fp->tfile);
901 		if (unlikely(ret != 0))
902 			goto out_no_active_lock;
903 
904 		ttm_lock_set_kill(&active->lock, true, SIGTERM);
905 		ret = ttm_bo_evict_mm(&dev_priv->bdev, TTM_PL_VRAM);
906 		if (unlikely(ret != 0)) {
907 			DRM_ERROR("Unable to clean VRAM on "
908 				  "master drop.\n");
909 		}
910 
911 		dev_priv->active_master = NULL;
912 	}
913 
914 	ttm_lock_set_kill(&vmaster->lock, false, SIGTERM);
915 	if (!from_open) {
916 		ttm_vt_unlock(&vmaster->lock);
917 		BUG_ON(vmw_fp->locked_master != file_priv->master);
918 		drm_master_put(&vmw_fp->locked_master);
919 	}
920 
921 	dev_priv->active_master = vmaster;
922 
923 	return 0;
924 
925 out_no_active_lock:
926 	if (!dev_priv->enable_fb) {
927 		mutex_lock(&dev_priv->hw_mutex);
928 		vmw_write(dev_priv, SVGA_REG_TRACES, 1);
929 		mutex_unlock(&dev_priv->hw_mutex);
930 		vmw_kms_restore_vga(dev_priv);
931 		vmw_3d_resource_dec(dev_priv, true);
932 	}
933 	return ret;
934 }
935 
936 static void vmw_master_drop(struct drm_device *dev,
937 			    struct drm_file *file_priv,
938 			    bool from_release)
939 {
940 	struct vmw_private *dev_priv = vmw_priv(dev);
941 	struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
942 	struct vmw_master *vmaster = vmw_master(file_priv->master);
943 	int ret;
944 
945 	/**
946 	 * Make sure the master doesn't disappear while we have
947 	 * it locked.
948 	 */
949 
950 	vmw_fp->locked_master = drm_master_get(file_priv->master);
951 	ret = ttm_vt_lock(&vmaster->lock, false, vmw_fp->tfile);
952 	vmw_execbuf_release_pinned_bo(dev_priv, false, 0);
953 
954 	if (unlikely((ret != 0))) {
955 		DRM_ERROR("Unable to lock TTM at VT switch.\n");
956 		drm_master_put(&vmw_fp->locked_master);
957 	}
958 
959 	ttm_lock_set_kill(&vmaster->lock, true, SIGTERM);
960 
961 	if (!dev_priv->enable_fb) {
962 		ret = ttm_bo_evict_mm(&dev_priv->bdev, TTM_PL_VRAM);
963 		if (unlikely(ret != 0))
964 			DRM_ERROR("Unable to clean VRAM on master drop.\n");
965 		mutex_lock(&dev_priv->hw_mutex);
966 		vmw_write(dev_priv, SVGA_REG_TRACES, 1);
967 		mutex_unlock(&dev_priv->hw_mutex);
968 		vmw_kms_restore_vga(dev_priv);
969 		vmw_3d_resource_dec(dev_priv, true);
970 	}
971 
972 	dev_priv->active_master = &dev_priv->fbdev_master;
973 	ttm_lock_set_kill(&dev_priv->fbdev_master.lock, false, SIGTERM);
974 	ttm_vt_unlock(&dev_priv->fbdev_master.lock);
975 
976 	if (dev_priv->enable_fb)
977 		vmw_fb_on(dev_priv);
978 }
979 
980 
981 static void vmw_remove(struct pci_dev *pdev)
982 {
983 	struct drm_device *dev = pci_get_drvdata(pdev);
984 
985 	drm_put_dev(dev);
986 }
987 
988 static int vmwgfx_pm_notifier(struct notifier_block *nb, unsigned long val,
989 			      void *ptr)
990 {
991 	struct vmw_private *dev_priv =
992 		container_of(nb, struct vmw_private, pm_nb);
993 	struct vmw_master *vmaster = dev_priv->active_master;
994 
995 	switch (val) {
996 	case PM_HIBERNATION_PREPARE:
997 	case PM_SUSPEND_PREPARE:
998 		ttm_suspend_lock(&vmaster->lock);
999 
1000 		/**
1001 		 * This empties VRAM and unbinds all GMR bindings.
1002 		 * Buffer contents is moved to swappable memory.
1003 		 */
1004 		vmw_execbuf_release_pinned_bo(dev_priv, false, 0);
1005 		ttm_bo_swapout_all(&dev_priv->bdev);
1006 
1007 		break;
1008 	case PM_POST_HIBERNATION:
1009 	case PM_POST_SUSPEND:
1010 	case PM_POST_RESTORE:
1011 		ttm_suspend_unlock(&vmaster->lock);
1012 
1013 		break;
1014 	case PM_RESTORE_PREPARE:
1015 		break;
1016 	default:
1017 		break;
1018 	}
1019 	return 0;
1020 }
1021 
1022 /**
1023  * These might not be needed with the virtual SVGA device.
1024  */
1025 
1026 static int vmw_pci_suspend(struct pci_dev *pdev, pm_message_t state)
1027 {
1028 	struct drm_device *dev = pci_get_drvdata(pdev);
1029 	struct vmw_private *dev_priv = vmw_priv(dev);
1030 
1031 	if (dev_priv->num_3d_resources != 0) {
1032 		DRM_INFO("Can't suspend or hibernate "
1033 			 "while 3D resources are active.\n");
1034 		return -EBUSY;
1035 	}
1036 
1037 	pci_save_state(pdev);
1038 	pci_disable_device(pdev);
1039 	pci_set_power_state(pdev, PCI_D3hot);
1040 	return 0;
1041 }
1042 
1043 static int vmw_pci_resume(struct pci_dev *pdev)
1044 {
1045 	pci_set_power_state(pdev, PCI_D0);
1046 	pci_restore_state(pdev);
1047 	return pci_enable_device(pdev);
1048 }
1049 
1050 static int vmw_pm_suspend(struct device *kdev)
1051 {
1052 	struct pci_dev *pdev = to_pci_dev(kdev);
1053 	struct pm_message dummy;
1054 
1055 	dummy.event = 0;
1056 
1057 	return vmw_pci_suspend(pdev, dummy);
1058 }
1059 
1060 static int vmw_pm_resume(struct device *kdev)
1061 {
1062 	struct pci_dev *pdev = to_pci_dev(kdev);
1063 
1064 	return vmw_pci_resume(pdev);
1065 }
1066 
1067 static int vmw_pm_prepare(struct device *kdev)
1068 {
1069 	struct pci_dev *pdev = to_pci_dev(kdev);
1070 	struct drm_device *dev = pci_get_drvdata(pdev);
1071 	struct vmw_private *dev_priv = vmw_priv(dev);
1072 
1073 	/**
1074 	 * Release 3d reference held by fbdev and potentially
1075 	 * stop fifo.
1076 	 */
1077 	dev_priv->suspended = true;
1078 	if (dev_priv->enable_fb)
1079 			vmw_3d_resource_dec(dev_priv, true);
1080 
1081 	if (dev_priv->num_3d_resources != 0) {
1082 
1083 		DRM_INFO("Can't suspend or hibernate "
1084 			 "while 3D resources are active.\n");
1085 
1086 		if (dev_priv->enable_fb)
1087 			vmw_3d_resource_inc(dev_priv, true);
1088 		dev_priv->suspended = false;
1089 		return -EBUSY;
1090 	}
1091 
1092 	return 0;
1093 }
1094 
1095 static void vmw_pm_complete(struct device *kdev)
1096 {
1097 	struct pci_dev *pdev = to_pci_dev(kdev);
1098 	struct drm_device *dev = pci_get_drvdata(pdev);
1099 	struct vmw_private *dev_priv = vmw_priv(dev);
1100 
1101 	/**
1102 	 * Reclaim 3d reference held by fbdev and potentially
1103 	 * start fifo.
1104 	 */
1105 	if (dev_priv->enable_fb)
1106 			vmw_3d_resource_inc(dev_priv, false);
1107 
1108 	dev_priv->suspended = false;
1109 }
1110 
1111 static const struct dev_pm_ops vmw_pm_ops = {
1112 	.prepare = vmw_pm_prepare,
1113 	.complete = vmw_pm_complete,
1114 	.suspend = vmw_pm_suspend,
1115 	.resume = vmw_pm_resume,
1116 };
1117 
1118 static const struct file_operations vmwgfx_driver_fops = {
1119 	.owner = THIS_MODULE,
1120 	.open = drm_open,
1121 	.release = drm_release,
1122 	.unlocked_ioctl = vmw_unlocked_ioctl,
1123 	.mmap = vmw_mmap,
1124 	.poll = vmw_fops_poll,
1125 	.read = vmw_fops_read,
1126 	.fasync = drm_fasync,
1127 #if defined(CONFIG_COMPAT)
1128 	.compat_ioctl = drm_compat_ioctl,
1129 #endif
1130 	.llseek = noop_llseek,
1131 };
1132 
1133 static struct drm_driver driver = {
1134 	.driver_features = DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED |
1135 	DRIVER_MODESET,
1136 	.load = vmw_driver_load,
1137 	.unload = vmw_driver_unload,
1138 	.firstopen = vmw_firstopen,
1139 	.lastclose = vmw_lastclose,
1140 	.irq_preinstall = vmw_irq_preinstall,
1141 	.irq_postinstall = vmw_irq_postinstall,
1142 	.irq_uninstall = vmw_irq_uninstall,
1143 	.irq_handler = vmw_irq_handler,
1144 	.get_vblank_counter = vmw_get_vblank_counter,
1145 	.enable_vblank = vmw_enable_vblank,
1146 	.disable_vblank = vmw_disable_vblank,
1147 	.ioctls = vmw_ioctls,
1148 	.num_ioctls = DRM_ARRAY_SIZE(vmw_ioctls),
1149 	.dma_quiescent = NULL,	/*vmw_dma_quiescent, */
1150 	.master_create = vmw_master_create,
1151 	.master_destroy = vmw_master_destroy,
1152 	.master_set = vmw_master_set,
1153 	.master_drop = vmw_master_drop,
1154 	.open = vmw_driver_open,
1155 	.preclose = vmw_preclose,
1156 	.postclose = vmw_postclose,
1157 	.fops = &vmwgfx_driver_fops,
1158 	.name = VMWGFX_DRIVER_NAME,
1159 	.desc = VMWGFX_DRIVER_DESC,
1160 	.date = VMWGFX_DRIVER_DATE,
1161 	.major = VMWGFX_DRIVER_MAJOR,
1162 	.minor = VMWGFX_DRIVER_MINOR,
1163 	.patchlevel = VMWGFX_DRIVER_PATCHLEVEL
1164 };
1165 
1166 static struct pci_driver vmw_pci_driver = {
1167 	.name = VMWGFX_DRIVER_NAME,
1168 	.id_table = vmw_pci_id_list,
1169 	.probe = vmw_probe,
1170 	.remove = vmw_remove,
1171 	.driver = {
1172 		.pm = &vmw_pm_ops
1173 	}
1174 };
1175 
1176 static int vmw_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1177 {
1178 	return drm_get_pci_dev(pdev, ent, &driver);
1179 }
1180 
1181 static int __init vmwgfx_init(void)
1182 {
1183 	int ret;
1184 	ret = drm_pci_init(&driver, &vmw_pci_driver);
1185 	if (ret)
1186 		DRM_ERROR("Failed initializing DRM.\n");
1187 	return ret;
1188 }
1189 
1190 static void __exit vmwgfx_exit(void)
1191 {
1192 	drm_pci_exit(&driver, &vmw_pci_driver);
1193 }
1194 
1195 module_init(vmwgfx_init);
1196 module_exit(vmwgfx_exit);
1197 
1198 MODULE_AUTHOR("VMware Inc. and others");
1199 MODULE_DESCRIPTION("Standalone drm driver for the VMware SVGA device");
1200 MODULE_LICENSE("GPL and additional rights");
1201 MODULE_VERSION(__stringify(VMWGFX_DRIVER_MAJOR) "."
1202 	       __stringify(VMWGFX_DRIVER_MINOR) "."
1203 	       __stringify(VMWGFX_DRIVER_PATCHLEVEL) "."
1204 	       "0");
1205