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ARM: 8007/1: Remove extraneous kcmp syscall ignore
[mirror_ubuntu-artful-kernel.git] / drivers / gpu / drm / vmwgfx / vmwgfx_drv.c
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 #include <linux/dma_remapping.h>
36
37 #define VMWGFX_DRIVER_NAME "vmwgfx"
38 #define VMWGFX_DRIVER_DESC "Linux drm driver for VMware graphics devices"
39 #define VMWGFX_CHIP_SVGAII 0
40 #define VMW_FB_RESERVATION 0
41
42 #define VMW_MIN_INITIAL_WIDTH 800
43 #define VMW_MIN_INITIAL_HEIGHT 600
44
45
46 /**
47 * Fully encoded drm commands. Might move to vmw_drm.h
48 */
49
50 #define DRM_IOCTL_VMW_GET_PARAM \
51 DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_GET_PARAM, \
52 struct drm_vmw_getparam_arg)
53 #define DRM_IOCTL_VMW_ALLOC_DMABUF \
54 DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_ALLOC_DMABUF, \
55 union drm_vmw_alloc_dmabuf_arg)
56 #define DRM_IOCTL_VMW_UNREF_DMABUF \
57 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_DMABUF, \
58 struct drm_vmw_unref_dmabuf_arg)
59 #define DRM_IOCTL_VMW_CURSOR_BYPASS \
60 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_CURSOR_BYPASS, \
61 struct drm_vmw_cursor_bypass_arg)
62
63 #define DRM_IOCTL_VMW_CONTROL_STREAM \
64 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_CONTROL_STREAM, \
65 struct drm_vmw_control_stream_arg)
66 #define DRM_IOCTL_VMW_CLAIM_STREAM \
67 DRM_IOR(DRM_COMMAND_BASE + DRM_VMW_CLAIM_STREAM, \
68 struct drm_vmw_stream_arg)
69 #define DRM_IOCTL_VMW_UNREF_STREAM \
70 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_STREAM, \
71 struct drm_vmw_stream_arg)
72
73 #define DRM_IOCTL_VMW_CREATE_CONTEXT \
74 DRM_IOR(DRM_COMMAND_BASE + DRM_VMW_CREATE_CONTEXT, \
75 struct drm_vmw_context_arg)
76 #define DRM_IOCTL_VMW_UNREF_CONTEXT \
77 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_CONTEXT, \
78 struct drm_vmw_context_arg)
79 #define DRM_IOCTL_VMW_CREATE_SURFACE \
80 DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_CREATE_SURFACE, \
81 union drm_vmw_surface_create_arg)
82 #define DRM_IOCTL_VMW_UNREF_SURFACE \
83 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_SURFACE, \
84 struct drm_vmw_surface_arg)
85 #define DRM_IOCTL_VMW_REF_SURFACE \
86 DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_REF_SURFACE, \
87 union drm_vmw_surface_reference_arg)
88 #define DRM_IOCTL_VMW_EXECBUF \
89 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_EXECBUF, \
90 struct drm_vmw_execbuf_arg)
91 #define DRM_IOCTL_VMW_GET_3D_CAP \
92 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_GET_3D_CAP, \
93 struct drm_vmw_get_3d_cap_arg)
94 #define DRM_IOCTL_VMW_FENCE_WAIT \
95 DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_FENCE_WAIT, \
96 struct drm_vmw_fence_wait_arg)
97 #define DRM_IOCTL_VMW_FENCE_SIGNALED \
98 DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_FENCE_SIGNALED, \
99 struct drm_vmw_fence_signaled_arg)
100 #define DRM_IOCTL_VMW_FENCE_UNREF \
101 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_FENCE_UNREF, \
102 struct drm_vmw_fence_arg)
103 #define DRM_IOCTL_VMW_FENCE_EVENT \
104 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_FENCE_EVENT, \
105 struct drm_vmw_fence_event_arg)
106 #define DRM_IOCTL_VMW_PRESENT \
107 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_PRESENT, \
108 struct drm_vmw_present_arg)
109 #define DRM_IOCTL_VMW_PRESENT_READBACK \
110 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_PRESENT_READBACK, \
111 struct drm_vmw_present_readback_arg)
112 #define DRM_IOCTL_VMW_UPDATE_LAYOUT \
113 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UPDATE_LAYOUT, \
114 struct drm_vmw_update_layout_arg)
115 #define DRM_IOCTL_VMW_CREATE_SHADER \
116 DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_CREATE_SHADER, \
117 struct drm_vmw_shader_create_arg)
118 #define DRM_IOCTL_VMW_UNREF_SHADER \
119 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_SHADER, \
120 struct drm_vmw_shader_arg)
121 #define DRM_IOCTL_VMW_GB_SURFACE_CREATE \
122 DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_GB_SURFACE_CREATE, \
123 union drm_vmw_gb_surface_create_arg)
124 #define DRM_IOCTL_VMW_GB_SURFACE_REF \
125 DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_GB_SURFACE_REF, \
126 union drm_vmw_gb_surface_reference_arg)
127 #define DRM_IOCTL_VMW_SYNCCPU \
128 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_SYNCCPU, \
129 struct drm_vmw_synccpu_arg)
130
131 /**
132 * The core DRM version of this macro doesn't account for
133 * DRM_COMMAND_BASE.
134 */
135
136 #define VMW_IOCTL_DEF(ioctl, func, flags) \
137 [DRM_IOCTL_NR(DRM_IOCTL_##ioctl) - DRM_COMMAND_BASE] = {DRM_##ioctl, flags, func, DRM_IOCTL_##ioctl}
138
139 /**
140 * Ioctl definitions.
141 */
142
143 static const struct drm_ioctl_desc vmw_ioctls[] = {
144 VMW_IOCTL_DEF(VMW_GET_PARAM, vmw_getparam_ioctl,
145 DRM_AUTH | DRM_UNLOCKED),
146 VMW_IOCTL_DEF(VMW_ALLOC_DMABUF, vmw_dmabuf_alloc_ioctl,
147 DRM_AUTH | DRM_UNLOCKED),
148 VMW_IOCTL_DEF(VMW_UNREF_DMABUF, vmw_dmabuf_unref_ioctl,
149 DRM_AUTH | DRM_UNLOCKED),
150 VMW_IOCTL_DEF(VMW_CURSOR_BYPASS,
151 vmw_kms_cursor_bypass_ioctl,
152 DRM_MASTER | DRM_CONTROL_ALLOW | DRM_UNLOCKED),
153
154 VMW_IOCTL_DEF(VMW_CONTROL_STREAM, vmw_overlay_ioctl,
155 DRM_MASTER | DRM_CONTROL_ALLOW | DRM_UNLOCKED),
156 VMW_IOCTL_DEF(VMW_CLAIM_STREAM, vmw_stream_claim_ioctl,
157 DRM_MASTER | DRM_CONTROL_ALLOW | DRM_UNLOCKED),
158 VMW_IOCTL_DEF(VMW_UNREF_STREAM, vmw_stream_unref_ioctl,
159 DRM_MASTER | DRM_CONTROL_ALLOW | DRM_UNLOCKED),
160
161 VMW_IOCTL_DEF(VMW_CREATE_CONTEXT, vmw_context_define_ioctl,
162 DRM_AUTH | DRM_UNLOCKED),
163 VMW_IOCTL_DEF(VMW_UNREF_CONTEXT, vmw_context_destroy_ioctl,
164 DRM_AUTH | DRM_UNLOCKED),
165 VMW_IOCTL_DEF(VMW_CREATE_SURFACE, vmw_surface_define_ioctl,
166 DRM_AUTH | DRM_UNLOCKED),
167 VMW_IOCTL_DEF(VMW_UNREF_SURFACE, vmw_surface_destroy_ioctl,
168 DRM_AUTH | DRM_UNLOCKED),
169 VMW_IOCTL_DEF(VMW_REF_SURFACE, vmw_surface_reference_ioctl,
170 DRM_AUTH | DRM_UNLOCKED),
171 VMW_IOCTL_DEF(VMW_EXECBUF, vmw_execbuf_ioctl,
172 DRM_AUTH | DRM_UNLOCKED),
173 VMW_IOCTL_DEF(VMW_FENCE_WAIT, vmw_fence_obj_wait_ioctl,
174 DRM_AUTH | DRM_UNLOCKED),
175 VMW_IOCTL_DEF(VMW_FENCE_SIGNALED,
176 vmw_fence_obj_signaled_ioctl,
177 DRM_AUTH | DRM_UNLOCKED),
178 VMW_IOCTL_DEF(VMW_FENCE_UNREF, vmw_fence_obj_unref_ioctl,
179 DRM_AUTH | DRM_UNLOCKED),
180 VMW_IOCTL_DEF(VMW_FENCE_EVENT,
181 vmw_fence_event_ioctl,
182 DRM_AUTH | DRM_UNLOCKED),
183 VMW_IOCTL_DEF(VMW_GET_3D_CAP, vmw_get_cap_3d_ioctl,
184 DRM_AUTH | DRM_UNLOCKED),
185
186 /* these allow direct access to the framebuffers mark as master only */
187 VMW_IOCTL_DEF(VMW_PRESENT, vmw_present_ioctl,
188 DRM_MASTER | DRM_AUTH | DRM_UNLOCKED),
189 VMW_IOCTL_DEF(VMW_PRESENT_READBACK,
190 vmw_present_readback_ioctl,
191 DRM_MASTER | DRM_AUTH | DRM_UNLOCKED),
192 VMW_IOCTL_DEF(VMW_UPDATE_LAYOUT,
193 vmw_kms_update_layout_ioctl,
194 DRM_MASTER | DRM_UNLOCKED),
195 VMW_IOCTL_DEF(VMW_CREATE_SHADER,
196 vmw_shader_define_ioctl,
197 DRM_AUTH | DRM_UNLOCKED),
198 VMW_IOCTL_DEF(VMW_UNREF_SHADER,
199 vmw_shader_destroy_ioctl,
200 DRM_AUTH | DRM_UNLOCKED),
201 VMW_IOCTL_DEF(VMW_GB_SURFACE_CREATE,
202 vmw_gb_surface_define_ioctl,
203 DRM_AUTH | DRM_UNLOCKED),
204 VMW_IOCTL_DEF(VMW_GB_SURFACE_REF,
205 vmw_gb_surface_reference_ioctl,
206 DRM_AUTH | DRM_UNLOCKED),
207 VMW_IOCTL_DEF(VMW_SYNCCPU,
208 vmw_user_dmabuf_synccpu_ioctl,
209 DRM_AUTH | DRM_UNLOCKED),
210 };
211
212 static struct pci_device_id vmw_pci_id_list[] = {
213 {0x15ad, 0x0405, PCI_ANY_ID, PCI_ANY_ID, 0, 0, VMWGFX_CHIP_SVGAII},
214 {0, 0, 0}
215 };
216 MODULE_DEVICE_TABLE(pci, vmw_pci_id_list);
217
218 static int enable_fbdev = IS_ENABLED(CONFIG_DRM_VMWGFX_FBCON);
219 static int vmw_force_iommu;
220 static int vmw_restrict_iommu;
221 static int vmw_force_coherent;
222 static int vmw_restrict_dma_mask;
223
224 static int vmw_probe(struct pci_dev *, const struct pci_device_id *);
225 static void vmw_master_init(struct vmw_master *);
226 static int vmwgfx_pm_notifier(struct notifier_block *nb, unsigned long val,
227 void *ptr);
228
229 MODULE_PARM_DESC(enable_fbdev, "Enable vmwgfx fbdev");
230 module_param_named(enable_fbdev, enable_fbdev, int, 0600);
231 MODULE_PARM_DESC(force_dma_api, "Force using the DMA API for TTM pages");
232 module_param_named(force_dma_api, vmw_force_iommu, int, 0600);
233 MODULE_PARM_DESC(restrict_iommu, "Try to limit IOMMU usage for TTM pages");
234 module_param_named(restrict_iommu, vmw_restrict_iommu, int, 0600);
235 MODULE_PARM_DESC(force_coherent, "Force coherent TTM pages");
236 module_param_named(force_coherent, vmw_force_coherent, int, 0600);
237 MODULE_PARM_DESC(restrict_dma_mask, "Restrict DMA mask to 44 bits with IOMMU");
238 module_param_named(restrict_dma_mask, vmw_restrict_dma_mask, int, 0600);
239
240
241 static void vmw_print_capabilities(uint32_t capabilities)
242 {
243 DRM_INFO("Capabilities:\n");
244 if (capabilities & SVGA_CAP_RECT_COPY)
245 DRM_INFO(" Rect copy.\n");
246 if (capabilities & SVGA_CAP_CURSOR)
247 DRM_INFO(" Cursor.\n");
248 if (capabilities & SVGA_CAP_CURSOR_BYPASS)
249 DRM_INFO(" Cursor bypass.\n");
250 if (capabilities & SVGA_CAP_CURSOR_BYPASS_2)
251 DRM_INFO(" Cursor bypass 2.\n");
252 if (capabilities & SVGA_CAP_8BIT_EMULATION)
253 DRM_INFO(" 8bit emulation.\n");
254 if (capabilities & SVGA_CAP_ALPHA_CURSOR)
255 DRM_INFO(" Alpha cursor.\n");
256 if (capabilities & SVGA_CAP_3D)
257 DRM_INFO(" 3D.\n");
258 if (capabilities & SVGA_CAP_EXTENDED_FIFO)
259 DRM_INFO(" Extended Fifo.\n");
260 if (capabilities & SVGA_CAP_MULTIMON)
261 DRM_INFO(" Multimon.\n");
262 if (capabilities & SVGA_CAP_PITCHLOCK)
263 DRM_INFO(" Pitchlock.\n");
264 if (capabilities & SVGA_CAP_IRQMASK)
265 DRM_INFO(" Irq mask.\n");
266 if (capabilities & SVGA_CAP_DISPLAY_TOPOLOGY)
267 DRM_INFO(" Display Topology.\n");
268 if (capabilities & SVGA_CAP_GMR)
269 DRM_INFO(" GMR.\n");
270 if (capabilities & SVGA_CAP_TRACES)
271 DRM_INFO(" Traces.\n");
272 if (capabilities & SVGA_CAP_GMR2)
273 DRM_INFO(" GMR2.\n");
274 if (capabilities & SVGA_CAP_SCREEN_OBJECT_2)
275 DRM_INFO(" Screen Object 2.\n");
276 if (capabilities & SVGA_CAP_COMMAND_BUFFERS)
277 DRM_INFO(" Command Buffers.\n");
278 if (capabilities & SVGA_CAP_CMD_BUFFERS_2)
279 DRM_INFO(" Command Buffers 2.\n");
280 if (capabilities & SVGA_CAP_GBOBJECTS)
281 DRM_INFO(" Guest Backed Resources.\n");
282 }
283
284 /**
285 * vmw_dummy_query_bo_create - create a bo to hold a dummy query result
286 *
287 * @dev_priv: A device private structure.
288 *
289 * This function creates a small buffer object that holds the query
290 * result for dummy queries emitted as query barriers.
291 * The function will then map the first page and initialize a pending
292 * occlusion query result structure, Finally it will unmap the buffer.
293 * No interruptible waits are done within this function.
294 *
295 * Returns an error if bo creation or initialization fails.
296 */
297 static int vmw_dummy_query_bo_create(struct vmw_private *dev_priv)
298 {
299 int ret;
300 struct ttm_buffer_object *bo;
301 struct ttm_bo_kmap_obj map;
302 volatile SVGA3dQueryResult *result;
303 bool dummy;
304
305 /*
306 * Create the bo as pinned, so that a tryreserve will
307 * immediately succeed. This is because we're the only
308 * user of the bo currently.
309 */
310 ret = ttm_bo_create(&dev_priv->bdev,
311 PAGE_SIZE,
312 ttm_bo_type_device,
313 &vmw_sys_ne_placement,
314 0, false, NULL,
315 &bo);
316
317 if (unlikely(ret != 0))
318 return ret;
319
320 ret = ttm_bo_reserve(bo, false, true, false, 0);
321 BUG_ON(ret != 0);
322
323 ret = ttm_bo_kmap(bo, 0, 1, &map);
324 if (likely(ret == 0)) {
325 result = ttm_kmap_obj_virtual(&map, &dummy);
326 result->totalSize = sizeof(*result);
327 result->state = SVGA3D_QUERYSTATE_PENDING;
328 result->result32 = 0xff;
329 ttm_bo_kunmap(&map);
330 }
331 vmw_bo_pin(bo, false);
332 ttm_bo_unreserve(bo);
333
334 if (unlikely(ret != 0)) {
335 DRM_ERROR("Dummy query buffer map failed.\n");
336 ttm_bo_unref(&bo);
337 } else
338 dev_priv->dummy_query_bo = bo;
339
340 return ret;
341 }
342
343 static int vmw_request_device(struct vmw_private *dev_priv)
344 {
345 int ret;
346
347 ret = vmw_fifo_init(dev_priv, &dev_priv->fifo);
348 if (unlikely(ret != 0)) {
349 DRM_ERROR("Unable to initialize FIFO.\n");
350 return ret;
351 }
352 vmw_fence_fifo_up(dev_priv->fman);
353 if (dev_priv->has_mob) {
354 ret = vmw_otables_setup(dev_priv);
355 if (unlikely(ret != 0)) {
356 DRM_ERROR("Unable to initialize "
357 "guest Memory OBjects.\n");
358 goto out_no_mob;
359 }
360 }
361 ret = vmw_dummy_query_bo_create(dev_priv);
362 if (unlikely(ret != 0))
363 goto out_no_query_bo;
364
365 return 0;
366
367 out_no_query_bo:
368 if (dev_priv->has_mob)
369 vmw_otables_takedown(dev_priv);
370 out_no_mob:
371 vmw_fence_fifo_down(dev_priv->fman);
372 vmw_fifo_release(dev_priv, &dev_priv->fifo);
373 return ret;
374 }
375
376 static void vmw_release_device(struct vmw_private *dev_priv)
377 {
378 /*
379 * Previous destructions should've released
380 * the pinned bo.
381 */
382
383 BUG_ON(dev_priv->pinned_bo != NULL);
384
385 ttm_bo_unref(&dev_priv->dummy_query_bo);
386 if (dev_priv->has_mob)
387 vmw_otables_takedown(dev_priv);
388 vmw_fence_fifo_down(dev_priv->fman);
389 vmw_fifo_release(dev_priv, &dev_priv->fifo);
390 }
391
392
393 /**
394 * Increase the 3d resource refcount.
395 * If the count was prevously zero, initialize the fifo, switching to svga
396 * mode. Note that the master holds a ref as well, and may request an
397 * explicit switch to svga mode if fb is not running, using @unhide_svga.
398 */
399 int vmw_3d_resource_inc(struct vmw_private *dev_priv,
400 bool unhide_svga)
401 {
402 int ret = 0;
403
404 mutex_lock(&dev_priv->release_mutex);
405 if (unlikely(dev_priv->num_3d_resources++ == 0)) {
406 ret = vmw_request_device(dev_priv);
407 if (unlikely(ret != 0))
408 --dev_priv->num_3d_resources;
409 } else if (unhide_svga) {
410 mutex_lock(&dev_priv->hw_mutex);
411 vmw_write(dev_priv, SVGA_REG_ENABLE,
412 vmw_read(dev_priv, SVGA_REG_ENABLE) &
413 ~SVGA_REG_ENABLE_HIDE);
414 mutex_unlock(&dev_priv->hw_mutex);
415 }
416
417 mutex_unlock(&dev_priv->release_mutex);
418 return ret;
419 }
420
421 /**
422 * Decrease the 3d resource refcount.
423 * If the count reaches zero, disable the fifo, switching to vga mode.
424 * Note that the master holds a refcount as well, and may request an
425 * explicit switch to vga mode when it releases its refcount to account
426 * for the situation of an X server vt switch to VGA with 3d resources
427 * active.
428 */
429 void vmw_3d_resource_dec(struct vmw_private *dev_priv,
430 bool hide_svga)
431 {
432 int32_t n3d;
433
434 mutex_lock(&dev_priv->release_mutex);
435 if (unlikely(--dev_priv->num_3d_resources == 0))
436 vmw_release_device(dev_priv);
437 else if (hide_svga) {
438 mutex_lock(&dev_priv->hw_mutex);
439 vmw_write(dev_priv, SVGA_REG_ENABLE,
440 vmw_read(dev_priv, SVGA_REG_ENABLE) |
441 SVGA_REG_ENABLE_HIDE);
442 mutex_unlock(&dev_priv->hw_mutex);
443 }
444
445 n3d = (int32_t) dev_priv->num_3d_resources;
446 mutex_unlock(&dev_priv->release_mutex);
447
448 BUG_ON(n3d < 0);
449 }
450
451 /**
452 * Sets the initial_[width|height] fields on the given vmw_private.
453 *
454 * It does so by reading SVGA_REG_[WIDTH|HEIGHT] regs and then
455 * clamping the value to fb_max_[width|height] fields and the
456 * VMW_MIN_INITIAL_[WIDTH|HEIGHT].
457 * If the values appear to be invalid, set them to
458 * VMW_MIN_INITIAL_[WIDTH|HEIGHT].
459 */
460 static void vmw_get_initial_size(struct vmw_private *dev_priv)
461 {
462 uint32_t width;
463 uint32_t height;
464
465 width = vmw_read(dev_priv, SVGA_REG_WIDTH);
466 height = vmw_read(dev_priv, SVGA_REG_HEIGHT);
467
468 width = max_t(uint32_t, width, VMW_MIN_INITIAL_WIDTH);
469 height = max_t(uint32_t, height, VMW_MIN_INITIAL_HEIGHT);
470
471 if (width > dev_priv->fb_max_width ||
472 height > dev_priv->fb_max_height) {
473
474 /*
475 * This is a host error and shouldn't occur.
476 */
477
478 width = VMW_MIN_INITIAL_WIDTH;
479 height = VMW_MIN_INITIAL_HEIGHT;
480 }
481
482 dev_priv->initial_width = width;
483 dev_priv->initial_height = height;
484 }
485
486 /**
487 * vmw_dma_select_mode - Determine how DMA mappings should be set up for this
488 * system.
489 *
490 * @dev_priv: Pointer to a struct vmw_private
491 *
492 * This functions tries to determine the IOMMU setup and what actions
493 * need to be taken by the driver to make system pages visible to the
494 * device.
495 * If this function decides that DMA is not possible, it returns -EINVAL.
496 * The driver may then try to disable features of the device that require
497 * DMA.
498 */
499 static int vmw_dma_select_mode(struct vmw_private *dev_priv)
500 {
501 static const char *names[vmw_dma_map_max] = {
502 [vmw_dma_phys] = "Using physical TTM page addresses.",
503 [vmw_dma_alloc_coherent] = "Using coherent TTM pages.",
504 [vmw_dma_map_populate] = "Keeping DMA mappings.",
505 [vmw_dma_map_bind] = "Giving up DMA mappings early."};
506 #ifdef CONFIG_X86
507 const struct dma_map_ops *dma_ops = get_dma_ops(dev_priv->dev->dev);
508
509 #ifdef CONFIG_INTEL_IOMMU
510 if (intel_iommu_enabled) {
511 dev_priv->map_mode = vmw_dma_map_populate;
512 goto out_fixup;
513 }
514 #endif
515
516 if (!(vmw_force_iommu || vmw_force_coherent)) {
517 dev_priv->map_mode = vmw_dma_phys;
518 DRM_INFO("DMA map mode: %s\n", names[dev_priv->map_mode]);
519 return 0;
520 }
521
522 dev_priv->map_mode = vmw_dma_map_populate;
523
524 if (dma_ops->sync_single_for_cpu)
525 dev_priv->map_mode = vmw_dma_alloc_coherent;
526 #ifdef CONFIG_SWIOTLB
527 if (swiotlb_nr_tbl() == 0)
528 dev_priv->map_mode = vmw_dma_map_populate;
529 #endif
530
531 #ifdef CONFIG_INTEL_IOMMU
532 out_fixup:
533 #endif
534 if (dev_priv->map_mode == vmw_dma_map_populate &&
535 vmw_restrict_iommu)
536 dev_priv->map_mode = vmw_dma_map_bind;
537
538 if (vmw_force_coherent)
539 dev_priv->map_mode = vmw_dma_alloc_coherent;
540
541 #if !defined(CONFIG_SWIOTLB) && !defined(CONFIG_INTEL_IOMMU)
542 /*
543 * No coherent page pool
544 */
545 if (dev_priv->map_mode == vmw_dma_alloc_coherent)
546 return -EINVAL;
547 #endif
548
549 #else /* CONFIG_X86 */
550 dev_priv->map_mode = vmw_dma_map_populate;
551 #endif /* CONFIG_X86 */
552
553 DRM_INFO("DMA map mode: %s\n", names[dev_priv->map_mode]);
554
555 return 0;
556 }
557
558 /**
559 * vmw_dma_masks - set required page- and dma masks
560 *
561 * @dev: Pointer to struct drm-device
562 *
563 * With 32-bit we can only handle 32 bit PFNs. Optionally set that
564 * restriction also for 64-bit systems.
565 */
566 #ifdef CONFIG_INTEL_IOMMU
567 static int vmw_dma_masks(struct vmw_private *dev_priv)
568 {
569 struct drm_device *dev = dev_priv->dev;
570
571 if (intel_iommu_enabled &&
572 (sizeof(unsigned long) == 4 || vmw_restrict_dma_mask)) {
573 DRM_INFO("Restricting DMA addresses to 44 bits.\n");
574 return dma_set_mask(dev->dev, DMA_BIT_MASK(44));
575 }
576 return 0;
577 }
578 #else
579 static int vmw_dma_masks(struct vmw_private *dev_priv)
580 {
581 return 0;
582 }
583 #endif
584
585 static int vmw_driver_load(struct drm_device *dev, unsigned long chipset)
586 {
587 struct vmw_private *dev_priv;
588 int ret;
589 uint32_t svga_id;
590 enum vmw_res_type i;
591 bool refuse_dma = false;
592
593 dev_priv = kzalloc(sizeof(*dev_priv), GFP_KERNEL);
594 if (unlikely(dev_priv == NULL)) {
595 DRM_ERROR("Failed allocating a device private struct.\n");
596 return -ENOMEM;
597 }
598
599 pci_set_master(dev->pdev);
600
601 dev_priv->dev = dev;
602 dev_priv->vmw_chipset = chipset;
603 dev_priv->last_read_seqno = (uint32_t) -100;
604 mutex_init(&dev_priv->hw_mutex);
605 mutex_init(&dev_priv->cmdbuf_mutex);
606 mutex_init(&dev_priv->release_mutex);
607 mutex_init(&dev_priv->binding_mutex);
608 rwlock_init(&dev_priv->resource_lock);
609
610 for (i = vmw_res_context; i < vmw_res_max; ++i) {
611 idr_init(&dev_priv->res_idr[i]);
612 INIT_LIST_HEAD(&dev_priv->res_lru[i]);
613 }
614
615 mutex_init(&dev_priv->init_mutex);
616 init_waitqueue_head(&dev_priv->fence_queue);
617 init_waitqueue_head(&dev_priv->fifo_queue);
618 dev_priv->fence_queue_waiters = 0;
619 atomic_set(&dev_priv->fifo_queue_waiters, 0);
620
621 dev_priv->used_memory_size = 0;
622
623 dev_priv->io_start = pci_resource_start(dev->pdev, 0);
624 dev_priv->vram_start = pci_resource_start(dev->pdev, 1);
625 dev_priv->mmio_start = pci_resource_start(dev->pdev, 2);
626
627 dev_priv->enable_fb = enable_fbdev;
628
629 mutex_lock(&dev_priv->hw_mutex);
630
631 vmw_write(dev_priv, SVGA_REG_ID, SVGA_ID_2);
632 svga_id = vmw_read(dev_priv, SVGA_REG_ID);
633 if (svga_id != SVGA_ID_2) {
634 ret = -ENOSYS;
635 DRM_ERROR("Unsupported SVGA ID 0x%x\n", svga_id);
636 mutex_unlock(&dev_priv->hw_mutex);
637 goto out_err0;
638 }
639
640 dev_priv->capabilities = vmw_read(dev_priv, SVGA_REG_CAPABILITIES);
641 ret = vmw_dma_select_mode(dev_priv);
642 if (unlikely(ret != 0)) {
643 DRM_INFO("Restricting capabilities due to IOMMU setup.\n");
644 refuse_dma = true;
645 }
646
647 dev_priv->vram_size = vmw_read(dev_priv, SVGA_REG_VRAM_SIZE);
648 dev_priv->mmio_size = vmw_read(dev_priv, SVGA_REG_MEM_SIZE);
649 dev_priv->fb_max_width = vmw_read(dev_priv, SVGA_REG_MAX_WIDTH);
650 dev_priv->fb_max_height = vmw_read(dev_priv, SVGA_REG_MAX_HEIGHT);
651
652 vmw_get_initial_size(dev_priv);
653
654 if (dev_priv->capabilities & SVGA_CAP_GMR2) {
655 dev_priv->max_gmr_ids =
656 vmw_read(dev_priv, SVGA_REG_GMR_MAX_IDS);
657 dev_priv->max_gmr_pages =
658 vmw_read(dev_priv, SVGA_REG_GMRS_MAX_PAGES);
659 dev_priv->memory_size =
660 vmw_read(dev_priv, SVGA_REG_MEMORY_SIZE);
661 dev_priv->memory_size -= dev_priv->vram_size;
662 } else {
663 /*
664 * An arbitrary limit of 512MiB on surface
665 * memory. But all HWV8 hardware supports GMR2.
666 */
667 dev_priv->memory_size = 512*1024*1024;
668 }
669 dev_priv->max_mob_pages = 0;
670 if (dev_priv->capabilities & SVGA_CAP_GBOBJECTS) {
671 uint64_t mem_size =
672 vmw_read(dev_priv,
673 SVGA_REG_SUGGESTED_GBOBJECT_MEM_SIZE_KB);
674
675 dev_priv->max_mob_pages = mem_size * 1024 / PAGE_SIZE;
676 dev_priv->prim_bb_mem =
677 vmw_read(dev_priv,
678 SVGA_REG_MAX_PRIMARY_BOUNDING_BOX_MEM);
679 } else
680 dev_priv->prim_bb_mem = dev_priv->vram_size;
681
682 ret = vmw_dma_masks(dev_priv);
683 if (unlikely(ret != 0)) {
684 mutex_unlock(&dev_priv->hw_mutex);
685 goto out_err0;
686 }
687
688 if (unlikely(dev_priv->prim_bb_mem < dev_priv->vram_size))
689 dev_priv->prim_bb_mem = dev_priv->vram_size;
690
691 mutex_unlock(&dev_priv->hw_mutex);
692
693 vmw_print_capabilities(dev_priv->capabilities);
694
695 if (dev_priv->capabilities & SVGA_CAP_GMR2) {
696 DRM_INFO("Max GMR ids is %u\n",
697 (unsigned)dev_priv->max_gmr_ids);
698 DRM_INFO("Max number of GMR pages is %u\n",
699 (unsigned)dev_priv->max_gmr_pages);
700 DRM_INFO("Max dedicated hypervisor surface memory is %u kiB\n",
701 (unsigned)dev_priv->memory_size / 1024);
702 }
703 DRM_INFO("Maximum display memory size is %u kiB\n",
704 dev_priv->prim_bb_mem / 1024);
705 DRM_INFO("VRAM at 0x%08x size is %u kiB\n",
706 dev_priv->vram_start, dev_priv->vram_size / 1024);
707 DRM_INFO("MMIO at 0x%08x size is %u kiB\n",
708 dev_priv->mmio_start, dev_priv->mmio_size / 1024);
709
710 ret = vmw_ttm_global_init(dev_priv);
711 if (unlikely(ret != 0))
712 goto out_err0;
713
714
715 vmw_master_init(&dev_priv->fbdev_master);
716 ttm_lock_set_kill(&dev_priv->fbdev_master.lock, false, SIGTERM);
717 dev_priv->active_master = &dev_priv->fbdev_master;
718
719
720 ret = ttm_bo_device_init(&dev_priv->bdev,
721 dev_priv->bo_global_ref.ref.object,
722 &vmw_bo_driver, VMWGFX_FILE_PAGE_OFFSET,
723 false);
724 if (unlikely(ret != 0)) {
725 DRM_ERROR("Failed initializing TTM buffer object driver.\n");
726 goto out_err1;
727 }
728
729 ret = ttm_bo_init_mm(&dev_priv->bdev, TTM_PL_VRAM,
730 (dev_priv->vram_size >> PAGE_SHIFT));
731 if (unlikely(ret != 0)) {
732 DRM_ERROR("Failed initializing memory manager for VRAM.\n");
733 goto out_err2;
734 }
735
736 dev_priv->has_gmr = true;
737 if (((dev_priv->capabilities & (SVGA_CAP_GMR | SVGA_CAP_GMR2)) == 0) ||
738 refuse_dma || ttm_bo_init_mm(&dev_priv->bdev, VMW_PL_GMR,
739 VMW_PL_GMR) != 0) {
740 DRM_INFO("No GMR memory available. "
741 "Graphics memory resources are very limited.\n");
742 dev_priv->has_gmr = false;
743 }
744
745 if (dev_priv->capabilities & SVGA_CAP_GBOBJECTS) {
746 dev_priv->has_mob = true;
747 if (ttm_bo_init_mm(&dev_priv->bdev, VMW_PL_MOB,
748 VMW_PL_MOB) != 0) {
749 DRM_INFO("No MOB memory available. "
750 "3D will be disabled.\n");
751 dev_priv->has_mob = false;
752 }
753 }
754
755 dev_priv->mmio_mtrr = arch_phys_wc_add(dev_priv->mmio_start,
756 dev_priv->mmio_size);
757
758 dev_priv->mmio_virt = ioremap_wc(dev_priv->mmio_start,
759 dev_priv->mmio_size);
760
761 if (unlikely(dev_priv->mmio_virt == NULL)) {
762 ret = -ENOMEM;
763 DRM_ERROR("Failed mapping MMIO.\n");
764 goto out_err3;
765 }
766
767 /* Need mmio memory to check for fifo pitchlock cap. */
768 if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY) &&
769 !(dev_priv->capabilities & SVGA_CAP_PITCHLOCK) &&
770 !vmw_fifo_have_pitchlock(dev_priv)) {
771 ret = -ENOSYS;
772 DRM_ERROR("Hardware has no pitchlock\n");
773 goto out_err4;
774 }
775
776 dev_priv->tdev = ttm_object_device_init
777 (dev_priv->mem_global_ref.object, 12, &vmw_prime_dmabuf_ops);
778
779 if (unlikely(dev_priv->tdev == NULL)) {
780 DRM_ERROR("Unable to initialize TTM object management.\n");
781 ret = -ENOMEM;
782 goto out_err4;
783 }
784
785 dev->dev_private = dev_priv;
786
787 ret = pci_request_regions(dev->pdev, "vmwgfx probe");
788 dev_priv->stealth = (ret != 0);
789 if (dev_priv->stealth) {
790 /**
791 * Request at least the mmio PCI resource.
792 */
793
794 DRM_INFO("It appears like vesafb is loaded. "
795 "Ignore above error if any.\n");
796 ret = pci_request_region(dev->pdev, 2, "vmwgfx stealth probe");
797 if (unlikely(ret != 0)) {
798 DRM_ERROR("Failed reserving the SVGA MMIO resource.\n");
799 goto out_no_device;
800 }
801 }
802
803 if (dev_priv->capabilities & SVGA_CAP_IRQMASK) {
804 ret = drm_irq_install(dev);
805 if (ret != 0) {
806 DRM_ERROR("Failed installing irq: %d\n", ret);
807 goto out_no_irq;
808 }
809 }
810
811 dev_priv->fman = vmw_fence_manager_init(dev_priv);
812 if (unlikely(dev_priv->fman == NULL)) {
813 ret = -ENOMEM;
814 goto out_no_fman;
815 }
816
817 vmw_kms_save_vga(dev_priv);
818
819 /* Start kms and overlay systems, needs fifo. */
820 ret = vmw_kms_init(dev_priv);
821 if (unlikely(ret != 0))
822 goto out_no_kms;
823 vmw_overlay_init(dev_priv);
824
825 if (dev_priv->enable_fb) {
826 ret = vmw_3d_resource_inc(dev_priv, true);
827 if (unlikely(ret != 0))
828 goto out_no_fifo;
829 vmw_fb_init(dev_priv);
830 }
831
832 dev_priv->pm_nb.notifier_call = vmwgfx_pm_notifier;
833 register_pm_notifier(&dev_priv->pm_nb);
834
835 return 0;
836
837 out_no_fifo:
838 vmw_overlay_close(dev_priv);
839 vmw_kms_close(dev_priv);
840 out_no_kms:
841 vmw_kms_restore_vga(dev_priv);
842 vmw_fence_manager_takedown(dev_priv->fman);
843 out_no_fman:
844 if (dev_priv->capabilities & SVGA_CAP_IRQMASK)
845 drm_irq_uninstall(dev_priv->dev);
846 out_no_irq:
847 if (dev_priv->stealth)
848 pci_release_region(dev->pdev, 2);
849 else
850 pci_release_regions(dev->pdev);
851 out_no_device:
852 ttm_object_device_release(&dev_priv->tdev);
853 out_err4:
854 iounmap(dev_priv->mmio_virt);
855 out_err3:
856 arch_phys_wc_del(dev_priv->mmio_mtrr);
857 if (dev_priv->has_mob)
858 (void) ttm_bo_clean_mm(&dev_priv->bdev, VMW_PL_MOB);
859 if (dev_priv->has_gmr)
860 (void) ttm_bo_clean_mm(&dev_priv->bdev, VMW_PL_GMR);
861 (void)ttm_bo_clean_mm(&dev_priv->bdev, TTM_PL_VRAM);
862 out_err2:
863 (void)ttm_bo_device_release(&dev_priv->bdev);
864 out_err1:
865 vmw_ttm_global_release(dev_priv);
866 out_err0:
867 for (i = vmw_res_context; i < vmw_res_max; ++i)
868 idr_destroy(&dev_priv->res_idr[i]);
869
870 kfree(dev_priv);
871 return ret;
872 }
873
874 static int vmw_driver_unload(struct drm_device *dev)
875 {
876 struct vmw_private *dev_priv = vmw_priv(dev);
877 enum vmw_res_type i;
878
879 unregister_pm_notifier(&dev_priv->pm_nb);
880
881 if (dev_priv->ctx.res_ht_initialized)
882 drm_ht_remove(&dev_priv->ctx.res_ht);
883 if (dev_priv->ctx.cmd_bounce)
884 vfree(dev_priv->ctx.cmd_bounce);
885 if (dev_priv->enable_fb) {
886 vmw_fb_close(dev_priv);
887 vmw_kms_restore_vga(dev_priv);
888 vmw_3d_resource_dec(dev_priv, false);
889 }
890 vmw_kms_close(dev_priv);
891 vmw_overlay_close(dev_priv);
892 vmw_fence_manager_takedown(dev_priv->fman);
893 if (dev_priv->capabilities & SVGA_CAP_IRQMASK)
894 drm_irq_uninstall(dev_priv->dev);
895 if (dev_priv->stealth)
896 pci_release_region(dev->pdev, 2);
897 else
898 pci_release_regions(dev->pdev);
899
900 ttm_object_device_release(&dev_priv->tdev);
901 iounmap(dev_priv->mmio_virt);
902 arch_phys_wc_del(dev_priv->mmio_mtrr);
903 if (dev_priv->has_mob)
904 (void) ttm_bo_clean_mm(&dev_priv->bdev, VMW_PL_MOB);
905 if (dev_priv->has_gmr)
906 (void)ttm_bo_clean_mm(&dev_priv->bdev, VMW_PL_GMR);
907 (void)ttm_bo_clean_mm(&dev_priv->bdev, TTM_PL_VRAM);
908 (void)ttm_bo_device_release(&dev_priv->bdev);
909 vmw_ttm_global_release(dev_priv);
910
911 for (i = vmw_res_context; i < vmw_res_max; ++i)
912 idr_destroy(&dev_priv->res_idr[i]);
913
914 kfree(dev_priv);
915
916 return 0;
917 }
918
919 static void vmw_preclose(struct drm_device *dev,
920 struct drm_file *file_priv)
921 {
922 struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
923 struct vmw_private *dev_priv = vmw_priv(dev);
924
925 vmw_event_fence_fpriv_gone(dev_priv->fman, &vmw_fp->fence_events);
926 }
927
928 static void vmw_postclose(struct drm_device *dev,
929 struct drm_file *file_priv)
930 {
931 struct vmw_fpriv *vmw_fp;
932
933 vmw_fp = vmw_fpriv(file_priv);
934
935 if (vmw_fp->locked_master) {
936 struct vmw_master *vmaster =
937 vmw_master(vmw_fp->locked_master);
938
939 ttm_lock_set_kill(&vmaster->lock, true, SIGTERM);
940 ttm_vt_unlock(&vmaster->lock);
941 drm_master_put(&vmw_fp->locked_master);
942 }
943
944 ttm_object_file_release(&vmw_fp->tfile);
945 kfree(vmw_fp);
946 }
947
948 static int vmw_driver_open(struct drm_device *dev, struct drm_file *file_priv)
949 {
950 struct vmw_private *dev_priv = vmw_priv(dev);
951 struct vmw_fpriv *vmw_fp;
952 int ret = -ENOMEM;
953
954 vmw_fp = kzalloc(sizeof(*vmw_fp), GFP_KERNEL);
955 if (unlikely(vmw_fp == NULL))
956 return ret;
957
958 INIT_LIST_HEAD(&vmw_fp->fence_events);
959 vmw_fp->tfile = ttm_object_file_init(dev_priv->tdev, 10);
960 if (unlikely(vmw_fp->tfile == NULL))
961 goto out_no_tfile;
962
963 file_priv->driver_priv = vmw_fp;
964 dev_priv->bdev.dev_mapping = dev->dev_mapping;
965
966 return 0;
967
968 out_no_tfile:
969 kfree(vmw_fp);
970 return ret;
971 }
972
973 static long vmw_unlocked_ioctl(struct file *filp, unsigned int cmd,
974 unsigned long arg)
975 {
976 struct drm_file *file_priv = filp->private_data;
977 struct drm_device *dev = file_priv->minor->dev;
978 unsigned int nr = DRM_IOCTL_NR(cmd);
979
980 /*
981 * Do extra checking on driver private ioctls.
982 */
983
984 if ((nr >= DRM_COMMAND_BASE) && (nr < DRM_COMMAND_END)
985 && (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls)) {
986 const struct drm_ioctl_desc *ioctl =
987 &vmw_ioctls[nr - DRM_COMMAND_BASE];
988
989 if (unlikely(ioctl->cmd_drv != cmd)) {
990 DRM_ERROR("Invalid command format, ioctl %d\n",
991 nr - DRM_COMMAND_BASE);
992 return -EINVAL;
993 }
994 }
995
996 return drm_ioctl(filp, cmd, arg);
997 }
998
999 static void vmw_lastclose(struct drm_device *dev)
1000 {
1001 struct drm_crtc *crtc;
1002 struct drm_mode_set set;
1003 int ret;
1004
1005 set.x = 0;
1006 set.y = 0;
1007 set.fb = NULL;
1008 set.mode = NULL;
1009 set.connectors = NULL;
1010 set.num_connectors = 0;
1011
1012 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
1013 set.crtc = crtc;
1014 ret = drm_mode_set_config_internal(&set);
1015 WARN_ON(ret != 0);
1016 }
1017
1018 }
1019
1020 static void vmw_master_init(struct vmw_master *vmaster)
1021 {
1022 ttm_lock_init(&vmaster->lock);
1023 INIT_LIST_HEAD(&vmaster->fb_surf);
1024 mutex_init(&vmaster->fb_surf_mutex);
1025 }
1026
1027 static int vmw_master_create(struct drm_device *dev,
1028 struct drm_master *master)
1029 {
1030 struct vmw_master *vmaster;
1031
1032 vmaster = kzalloc(sizeof(*vmaster), GFP_KERNEL);
1033 if (unlikely(vmaster == NULL))
1034 return -ENOMEM;
1035
1036 vmw_master_init(vmaster);
1037 ttm_lock_set_kill(&vmaster->lock, true, SIGTERM);
1038 master->driver_priv = vmaster;
1039
1040 return 0;
1041 }
1042
1043 static void vmw_master_destroy(struct drm_device *dev,
1044 struct drm_master *master)
1045 {
1046 struct vmw_master *vmaster = vmw_master(master);
1047
1048 master->driver_priv = NULL;
1049 kfree(vmaster);
1050 }
1051
1052
1053 static int vmw_master_set(struct drm_device *dev,
1054 struct drm_file *file_priv,
1055 bool from_open)
1056 {
1057 struct vmw_private *dev_priv = vmw_priv(dev);
1058 struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
1059 struct vmw_master *active = dev_priv->active_master;
1060 struct vmw_master *vmaster = vmw_master(file_priv->master);
1061 int ret = 0;
1062
1063 if (!dev_priv->enable_fb) {
1064 ret = vmw_3d_resource_inc(dev_priv, true);
1065 if (unlikely(ret != 0))
1066 return ret;
1067 vmw_kms_save_vga(dev_priv);
1068 mutex_lock(&dev_priv->hw_mutex);
1069 vmw_write(dev_priv, SVGA_REG_TRACES, 0);
1070 mutex_unlock(&dev_priv->hw_mutex);
1071 }
1072
1073 if (active) {
1074 BUG_ON(active != &dev_priv->fbdev_master);
1075 ret = ttm_vt_lock(&active->lock, false, vmw_fp->tfile);
1076 if (unlikely(ret != 0))
1077 goto out_no_active_lock;
1078
1079 ttm_lock_set_kill(&active->lock, true, SIGTERM);
1080 ret = ttm_bo_evict_mm(&dev_priv->bdev, TTM_PL_VRAM);
1081 if (unlikely(ret != 0)) {
1082 DRM_ERROR("Unable to clean VRAM on "
1083 "master drop.\n");
1084 }
1085
1086 dev_priv->active_master = NULL;
1087 }
1088
1089 ttm_lock_set_kill(&vmaster->lock, false, SIGTERM);
1090 if (!from_open) {
1091 ttm_vt_unlock(&vmaster->lock);
1092 BUG_ON(vmw_fp->locked_master != file_priv->master);
1093 drm_master_put(&vmw_fp->locked_master);
1094 }
1095
1096 dev_priv->active_master = vmaster;
1097
1098 return 0;
1099
1100 out_no_active_lock:
1101 if (!dev_priv->enable_fb) {
1102 vmw_kms_restore_vga(dev_priv);
1103 vmw_3d_resource_dec(dev_priv, true);
1104 mutex_lock(&dev_priv->hw_mutex);
1105 vmw_write(dev_priv, SVGA_REG_TRACES, 1);
1106 mutex_unlock(&dev_priv->hw_mutex);
1107 }
1108 return ret;
1109 }
1110
1111 static void vmw_master_drop(struct drm_device *dev,
1112 struct drm_file *file_priv,
1113 bool from_release)
1114 {
1115 struct vmw_private *dev_priv = vmw_priv(dev);
1116 struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
1117 struct vmw_master *vmaster = vmw_master(file_priv->master);
1118 int ret;
1119
1120 /**
1121 * Make sure the master doesn't disappear while we have
1122 * it locked.
1123 */
1124
1125 vmw_fp->locked_master = drm_master_get(file_priv->master);
1126 ret = ttm_vt_lock(&vmaster->lock, false, vmw_fp->tfile);
1127 if (unlikely((ret != 0))) {
1128 DRM_ERROR("Unable to lock TTM at VT switch.\n");
1129 drm_master_put(&vmw_fp->locked_master);
1130 }
1131
1132 ttm_lock_set_kill(&vmaster->lock, false, SIGTERM);
1133 vmw_execbuf_release_pinned_bo(dev_priv);
1134
1135 if (!dev_priv->enable_fb) {
1136 ret = ttm_bo_evict_mm(&dev_priv->bdev, TTM_PL_VRAM);
1137 if (unlikely(ret != 0))
1138 DRM_ERROR("Unable to clean VRAM on master drop.\n");
1139 vmw_kms_restore_vga(dev_priv);
1140 vmw_3d_resource_dec(dev_priv, true);
1141 mutex_lock(&dev_priv->hw_mutex);
1142 vmw_write(dev_priv, SVGA_REG_TRACES, 1);
1143 mutex_unlock(&dev_priv->hw_mutex);
1144 }
1145
1146 dev_priv->active_master = &dev_priv->fbdev_master;
1147 ttm_lock_set_kill(&dev_priv->fbdev_master.lock, false, SIGTERM);
1148 ttm_vt_unlock(&dev_priv->fbdev_master.lock);
1149
1150 if (dev_priv->enable_fb)
1151 vmw_fb_on(dev_priv);
1152 }
1153
1154
1155 static void vmw_remove(struct pci_dev *pdev)
1156 {
1157 struct drm_device *dev = pci_get_drvdata(pdev);
1158
1159 drm_put_dev(dev);
1160 }
1161
1162 static int vmwgfx_pm_notifier(struct notifier_block *nb, unsigned long val,
1163 void *ptr)
1164 {
1165 struct vmw_private *dev_priv =
1166 container_of(nb, struct vmw_private, pm_nb);
1167 struct vmw_master *vmaster = dev_priv->active_master;
1168
1169 switch (val) {
1170 case PM_HIBERNATION_PREPARE:
1171 case PM_SUSPEND_PREPARE:
1172 ttm_suspend_lock(&vmaster->lock);
1173
1174 /**
1175 * This empties VRAM and unbinds all GMR bindings.
1176 * Buffer contents is moved to swappable memory.
1177 */
1178 vmw_execbuf_release_pinned_bo(dev_priv);
1179 vmw_resource_evict_all(dev_priv);
1180 ttm_bo_swapout_all(&dev_priv->bdev);
1181
1182 break;
1183 case PM_POST_HIBERNATION:
1184 case PM_POST_SUSPEND:
1185 case PM_POST_RESTORE:
1186 ttm_suspend_unlock(&vmaster->lock);
1187
1188 break;
1189 case PM_RESTORE_PREPARE:
1190 break;
1191 default:
1192 break;
1193 }
1194 return 0;
1195 }
1196
1197 /**
1198 * These might not be needed with the virtual SVGA device.
1199 */
1200
1201 static int vmw_pci_suspend(struct pci_dev *pdev, pm_message_t state)
1202 {
1203 struct drm_device *dev = pci_get_drvdata(pdev);
1204 struct vmw_private *dev_priv = vmw_priv(dev);
1205
1206 if (dev_priv->num_3d_resources != 0) {
1207 DRM_INFO("Can't suspend or hibernate "
1208 "while 3D resources are active.\n");
1209 return -EBUSY;
1210 }
1211
1212 pci_save_state(pdev);
1213 pci_disable_device(pdev);
1214 pci_set_power_state(pdev, PCI_D3hot);
1215 return 0;
1216 }
1217
1218 static int vmw_pci_resume(struct pci_dev *pdev)
1219 {
1220 pci_set_power_state(pdev, PCI_D0);
1221 pci_restore_state(pdev);
1222 return pci_enable_device(pdev);
1223 }
1224
1225 static int vmw_pm_suspend(struct device *kdev)
1226 {
1227 struct pci_dev *pdev = to_pci_dev(kdev);
1228 struct pm_message dummy;
1229
1230 dummy.event = 0;
1231
1232 return vmw_pci_suspend(pdev, dummy);
1233 }
1234
1235 static int vmw_pm_resume(struct device *kdev)
1236 {
1237 struct pci_dev *pdev = to_pci_dev(kdev);
1238
1239 return vmw_pci_resume(pdev);
1240 }
1241
1242 static int vmw_pm_prepare(struct device *kdev)
1243 {
1244 struct pci_dev *pdev = to_pci_dev(kdev);
1245 struct drm_device *dev = pci_get_drvdata(pdev);
1246 struct vmw_private *dev_priv = vmw_priv(dev);
1247
1248 /**
1249 * Release 3d reference held by fbdev and potentially
1250 * stop fifo.
1251 */
1252 dev_priv->suspended = true;
1253 if (dev_priv->enable_fb)
1254 vmw_3d_resource_dec(dev_priv, true);
1255
1256 if (dev_priv->num_3d_resources != 0) {
1257
1258 DRM_INFO("Can't suspend or hibernate "
1259 "while 3D resources are active.\n");
1260
1261 if (dev_priv->enable_fb)
1262 vmw_3d_resource_inc(dev_priv, true);
1263 dev_priv->suspended = false;
1264 return -EBUSY;
1265 }
1266
1267 return 0;
1268 }
1269
1270 static void vmw_pm_complete(struct device *kdev)
1271 {
1272 struct pci_dev *pdev = to_pci_dev(kdev);
1273 struct drm_device *dev = pci_get_drvdata(pdev);
1274 struct vmw_private *dev_priv = vmw_priv(dev);
1275
1276 mutex_lock(&dev_priv->hw_mutex);
1277 vmw_write(dev_priv, SVGA_REG_ID, SVGA_ID_2);
1278 (void) vmw_read(dev_priv, SVGA_REG_ID);
1279 mutex_unlock(&dev_priv->hw_mutex);
1280
1281 /**
1282 * Reclaim 3d reference held by fbdev and potentially
1283 * start fifo.
1284 */
1285 if (dev_priv->enable_fb)
1286 vmw_3d_resource_inc(dev_priv, false);
1287
1288 dev_priv->suspended = false;
1289 }
1290
1291 static const struct dev_pm_ops vmw_pm_ops = {
1292 .prepare = vmw_pm_prepare,
1293 .complete = vmw_pm_complete,
1294 .suspend = vmw_pm_suspend,
1295 .resume = vmw_pm_resume,
1296 };
1297
1298 static const struct file_operations vmwgfx_driver_fops = {
1299 .owner = THIS_MODULE,
1300 .open = drm_open,
1301 .release = drm_release,
1302 .unlocked_ioctl = vmw_unlocked_ioctl,
1303 .mmap = vmw_mmap,
1304 .poll = vmw_fops_poll,
1305 .read = vmw_fops_read,
1306 #if defined(CONFIG_COMPAT)
1307 .compat_ioctl = drm_compat_ioctl,
1308 #endif
1309 .llseek = noop_llseek,
1310 };
1311
1312 static struct drm_driver driver = {
1313 .driver_features = DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED |
1314 DRIVER_MODESET | DRIVER_PRIME,
1315 .load = vmw_driver_load,
1316 .unload = vmw_driver_unload,
1317 .lastclose = vmw_lastclose,
1318 .irq_preinstall = vmw_irq_preinstall,
1319 .irq_postinstall = vmw_irq_postinstall,
1320 .irq_uninstall = vmw_irq_uninstall,
1321 .irq_handler = vmw_irq_handler,
1322 .get_vblank_counter = vmw_get_vblank_counter,
1323 .enable_vblank = vmw_enable_vblank,
1324 .disable_vblank = vmw_disable_vblank,
1325 .ioctls = vmw_ioctls,
1326 .num_ioctls = DRM_ARRAY_SIZE(vmw_ioctls),
1327 .master_create = vmw_master_create,
1328 .master_destroy = vmw_master_destroy,
1329 .master_set = vmw_master_set,
1330 .master_drop = vmw_master_drop,
1331 .open = vmw_driver_open,
1332 .preclose = vmw_preclose,
1333 .postclose = vmw_postclose,
1334
1335 .dumb_create = vmw_dumb_create,
1336 .dumb_map_offset = vmw_dumb_map_offset,
1337 .dumb_destroy = vmw_dumb_destroy,
1338
1339 .prime_fd_to_handle = vmw_prime_fd_to_handle,
1340 .prime_handle_to_fd = vmw_prime_handle_to_fd,
1341
1342 .fops = &vmwgfx_driver_fops,
1343 .name = VMWGFX_DRIVER_NAME,
1344 .desc = VMWGFX_DRIVER_DESC,
1345 .date = VMWGFX_DRIVER_DATE,
1346 .major = VMWGFX_DRIVER_MAJOR,
1347 .minor = VMWGFX_DRIVER_MINOR,
1348 .patchlevel = VMWGFX_DRIVER_PATCHLEVEL
1349 };
1350
1351 static struct pci_driver vmw_pci_driver = {
1352 .name = VMWGFX_DRIVER_NAME,
1353 .id_table = vmw_pci_id_list,
1354 .probe = vmw_probe,
1355 .remove = vmw_remove,
1356 .driver = {
1357 .pm = &vmw_pm_ops
1358 }
1359 };
1360
1361 static int vmw_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1362 {
1363 return drm_get_pci_dev(pdev, ent, &driver);
1364 }
1365
1366 static int __init vmwgfx_init(void)
1367 {
1368 int ret;
1369 ret = drm_pci_init(&driver, &vmw_pci_driver);
1370 if (ret)
1371 DRM_ERROR("Failed initializing DRM.\n");
1372 return ret;
1373 }
1374
1375 static void __exit vmwgfx_exit(void)
1376 {
1377 drm_pci_exit(&driver, &vmw_pci_driver);
1378 }
1379
1380 module_init(vmwgfx_init);
1381 module_exit(vmwgfx_exit);
1382
1383 MODULE_AUTHOR("VMware Inc. and others");
1384 MODULE_DESCRIPTION("Standalone drm driver for the VMware SVGA device");
1385 MODULE_LICENSE("GPL and additional rights");
1386 MODULE_VERSION(__stringify(VMWGFX_DRIVER_MAJOR) "."
1387 __stringify(VMWGFX_DRIVER_MINOR) "."
1388 __stringify(VMWGFX_DRIVER_PATCHLEVEL) "."
1389 "0");
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