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Merge tag 'drm-next-2018-06-06-1' of git://anongit.freedesktop.org/drm/drm
[mirror_ubuntu-eoan-kernel.git] / drivers / gpu / drm / vmwgfx / vmwgfx_drv.c
1 /**************************************************************************
2 *
3 * Copyright © 2009-2016 VMware, Inc., Palo Alto, CA., USA
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
21 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
24 * USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27 #include <linux/module.h>
28 #include <linux/console.h>
29
30 #include <drm/drmP.h>
31 #include "vmwgfx_drv.h"
32 #include "vmwgfx_binding.h"
33 #include <drm/ttm/ttm_placement.h>
34 #include <drm/ttm/ttm_bo_driver.h>
35 #include <drm/ttm/ttm_object.h>
36 #include <drm/ttm/ttm_module.h>
37 #include <linux/dma_remapping.h>
38
39 #define VMWGFX_DRIVER_DESC "Linux drm driver for VMware graphics devices"
40 #define VMWGFX_CHIP_SVGAII 0
41 #define VMW_FB_RESERVATION 0
42
43 #define VMW_MIN_INITIAL_WIDTH 800
44 #define VMW_MIN_INITIAL_HEIGHT 600
45
46 #ifndef VMWGFX_GIT_VERSION
47 #define VMWGFX_GIT_VERSION "Unknown"
48 #endif
49
50 #define VMWGFX_REPO "In Tree"
51
52
53 /**
54 * Fully encoded drm commands. Might move to vmw_drm.h
55 */
56
57 #define DRM_IOCTL_VMW_GET_PARAM \
58 DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_GET_PARAM, \
59 struct drm_vmw_getparam_arg)
60 #define DRM_IOCTL_VMW_ALLOC_DMABUF \
61 DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_ALLOC_DMABUF, \
62 union drm_vmw_alloc_dmabuf_arg)
63 #define DRM_IOCTL_VMW_UNREF_DMABUF \
64 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_DMABUF, \
65 struct drm_vmw_unref_dmabuf_arg)
66 #define DRM_IOCTL_VMW_CURSOR_BYPASS \
67 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_CURSOR_BYPASS, \
68 struct drm_vmw_cursor_bypass_arg)
69
70 #define DRM_IOCTL_VMW_CONTROL_STREAM \
71 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_CONTROL_STREAM, \
72 struct drm_vmw_control_stream_arg)
73 #define DRM_IOCTL_VMW_CLAIM_STREAM \
74 DRM_IOR(DRM_COMMAND_BASE + DRM_VMW_CLAIM_STREAM, \
75 struct drm_vmw_stream_arg)
76 #define DRM_IOCTL_VMW_UNREF_STREAM \
77 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_STREAM, \
78 struct drm_vmw_stream_arg)
79
80 #define DRM_IOCTL_VMW_CREATE_CONTEXT \
81 DRM_IOR(DRM_COMMAND_BASE + DRM_VMW_CREATE_CONTEXT, \
82 struct drm_vmw_context_arg)
83 #define DRM_IOCTL_VMW_UNREF_CONTEXT \
84 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_CONTEXT, \
85 struct drm_vmw_context_arg)
86 #define DRM_IOCTL_VMW_CREATE_SURFACE \
87 DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_CREATE_SURFACE, \
88 union drm_vmw_surface_create_arg)
89 #define DRM_IOCTL_VMW_UNREF_SURFACE \
90 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_SURFACE, \
91 struct drm_vmw_surface_arg)
92 #define DRM_IOCTL_VMW_REF_SURFACE \
93 DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_REF_SURFACE, \
94 union drm_vmw_surface_reference_arg)
95 #define DRM_IOCTL_VMW_EXECBUF \
96 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_EXECBUF, \
97 struct drm_vmw_execbuf_arg)
98 #define DRM_IOCTL_VMW_GET_3D_CAP \
99 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_GET_3D_CAP, \
100 struct drm_vmw_get_3d_cap_arg)
101 #define DRM_IOCTL_VMW_FENCE_WAIT \
102 DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_FENCE_WAIT, \
103 struct drm_vmw_fence_wait_arg)
104 #define DRM_IOCTL_VMW_FENCE_SIGNALED \
105 DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_FENCE_SIGNALED, \
106 struct drm_vmw_fence_signaled_arg)
107 #define DRM_IOCTL_VMW_FENCE_UNREF \
108 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_FENCE_UNREF, \
109 struct drm_vmw_fence_arg)
110 #define DRM_IOCTL_VMW_FENCE_EVENT \
111 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_FENCE_EVENT, \
112 struct drm_vmw_fence_event_arg)
113 #define DRM_IOCTL_VMW_PRESENT \
114 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_PRESENT, \
115 struct drm_vmw_present_arg)
116 #define DRM_IOCTL_VMW_PRESENT_READBACK \
117 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_PRESENT_READBACK, \
118 struct drm_vmw_present_readback_arg)
119 #define DRM_IOCTL_VMW_UPDATE_LAYOUT \
120 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UPDATE_LAYOUT, \
121 struct drm_vmw_update_layout_arg)
122 #define DRM_IOCTL_VMW_CREATE_SHADER \
123 DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_CREATE_SHADER, \
124 struct drm_vmw_shader_create_arg)
125 #define DRM_IOCTL_VMW_UNREF_SHADER \
126 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_SHADER, \
127 struct drm_vmw_shader_arg)
128 #define DRM_IOCTL_VMW_GB_SURFACE_CREATE \
129 DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_GB_SURFACE_CREATE, \
130 union drm_vmw_gb_surface_create_arg)
131 #define DRM_IOCTL_VMW_GB_SURFACE_REF \
132 DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_GB_SURFACE_REF, \
133 union drm_vmw_gb_surface_reference_arg)
134 #define DRM_IOCTL_VMW_SYNCCPU \
135 DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_SYNCCPU, \
136 struct drm_vmw_synccpu_arg)
137 #define DRM_IOCTL_VMW_CREATE_EXTENDED_CONTEXT \
138 DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_CREATE_EXTENDED_CONTEXT, \
139 struct drm_vmw_context_arg)
140
141 /**
142 * The core DRM version of this macro doesn't account for
143 * DRM_COMMAND_BASE.
144 */
145
146 #define VMW_IOCTL_DEF(ioctl, func, flags) \
147 [DRM_IOCTL_NR(DRM_IOCTL_##ioctl) - DRM_COMMAND_BASE] = {DRM_IOCTL_##ioctl, flags, func}
148
149 /**
150 * Ioctl definitions.
151 */
152
153 static const struct drm_ioctl_desc vmw_ioctls[] = {
154 VMW_IOCTL_DEF(VMW_GET_PARAM, vmw_getparam_ioctl,
155 DRM_AUTH | DRM_RENDER_ALLOW),
156 VMW_IOCTL_DEF(VMW_ALLOC_DMABUF, vmw_dmabuf_alloc_ioctl,
157 DRM_AUTH | DRM_RENDER_ALLOW),
158 VMW_IOCTL_DEF(VMW_UNREF_DMABUF, vmw_dmabuf_unref_ioctl,
159 DRM_RENDER_ALLOW),
160 VMW_IOCTL_DEF(VMW_CURSOR_BYPASS,
161 vmw_kms_cursor_bypass_ioctl,
162 DRM_MASTER),
163
164 VMW_IOCTL_DEF(VMW_CONTROL_STREAM, vmw_overlay_ioctl,
165 DRM_MASTER),
166 VMW_IOCTL_DEF(VMW_CLAIM_STREAM, vmw_stream_claim_ioctl,
167 DRM_MASTER),
168 VMW_IOCTL_DEF(VMW_UNREF_STREAM, vmw_stream_unref_ioctl,
169 DRM_MASTER),
170
171 VMW_IOCTL_DEF(VMW_CREATE_CONTEXT, vmw_context_define_ioctl,
172 DRM_AUTH | DRM_RENDER_ALLOW),
173 VMW_IOCTL_DEF(VMW_UNREF_CONTEXT, vmw_context_destroy_ioctl,
174 DRM_RENDER_ALLOW),
175 VMW_IOCTL_DEF(VMW_CREATE_SURFACE, vmw_surface_define_ioctl,
176 DRM_AUTH | DRM_RENDER_ALLOW),
177 VMW_IOCTL_DEF(VMW_UNREF_SURFACE, vmw_surface_destroy_ioctl,
178 DRM_RENDER_ALLOW),
179 VMW_IOCTL_DEF(VMW_REF_SURFACE, vmw_surface_reference_ioctl,
180 DRM_AUTH | DRM_RENDER_ALLOW),
181 VMW_IOCTL_DEF(VMW_EXECBUF, NULL, DRM_AUTH |
182 DRM_RENDER_ALLOW),
183 VMW_IOCTL_DEF(VMW_FENCE_WAIT, vmw_fence_obj_wait_ioctl,
184 DRM_RENDER_ALLOW),
185 VMW_IOCTL_DEF(VMW_FENCE_SIGNALED,
186 vmw_fence_obj_signaled_ioctl,
187 DRM_RENDER_ALLOW),
188 VMW_IOCTL_DEF(VMW_FENCE_UNREF, vmw_fence_obj_unref_ioctl,
189 DRM_RENDER_ALLOW),
190 VMW_IOCTL_DEF(VMW_FENCE_EVENT, vmw_fence_event_ioctl,
191 DRM_AUTH | DRM_RENDER_ALLOW),
192 VMW_IOCTL_DEF(VMW_GET_3D_CAP, vmw_get_cap_3d_ioctl,
193 DRM_AUTH | DRM_RENDER_ALLOW),
194
195 /* these allow direct access to the framebuffers mark as master only */
196 VMW_IOCTL_DEF(VMW_PRESENT, vmw_present_ioctl,
197 DRM_MASTER | DRM_AUTH),
198 VMW_IOCTL_DEF(VMW_PRESENT_READBACK,
199 vmw_present_readback_ioctl,
200 DRM_MASTER | DRM_AUTH),
201 /*
202 * The permissions of the below ioctl are overridden in
203 * vmw_generic_ioctl(). We require either
204 * DRM_MASTER or capable(CAP_SYS_ADMIN).
205 */
206 VMW_IOCTL_DEF(VMW_UPDATE_LAYOUT,
207 vmw_kms_update_layout_ioctl,
208 DRM_RENDER_ALLOW),
209 VMW_IOCTL_DEF(VMW_CREATE_SHADER,
210 vmw_shader_define_ioctl,
211 DRM_AUTH | DRM_RENDER_ALLOW),
212 VMW_IOCTL_DEF(VMW_UNREF_SHADER,
213 vmw_shader_destroy_ioctl,
214 DRM_RENDER_ALLOW),
215 VMW_IOCTL_DEF(VMW_GB_SURFACE_CREATE,
216 vmw_gb_surface_define_ioctl,
217 DRM_AUTH | DRM_RENDER_ALLOW),
218 VMW_IOCTL_DEF(VMW_GB_SURFACE_REF,
219 vmw_gb_surface_reference_ioctl,
220 DRM_AUTH | DRM_RENDER_ALLOW),
221 VMW_IOCTL_DEF(VMW_SYNCCPU,
222 vmw_user_dmabuf_synccpu_ioctl,
223 DRM_RENDER_ALLOW),
224 VMW_IOCTL_DEF(VMW_CREATE_EXTENDED_CONTEXT,
225 vmw_extended_context_define_ioctl,
226 DRM_AUTH | DRM_RENDER_ALLOW),
227 };
228
229 static const struct pci_device_id vmw_pci_id_list[] = {
230 {0x15ad, 0x0405, PCI_ANY_ID, PCI_ANY_ID, 0, 0, VMWGFX_CHIP_SVGAII},
231 {0, 0, 0}
232 };
233 MODULE_DEVICE_TABLE(pci, vmw_pci_id_list);
234
235 static int enable_fbdev = IS_ENABLED(CONFIG_DRM_VMWGFX_FBCON);
236 static int vmw_force_iommu;
237 static int vmw_restrict_iommu;
238 static int vmw_force_coherent;
239 static int vmw_restrict_dma_mask;
240 static int vmw_assume_16bpp;
241
242 static int vmw_probe(struct pci_dev *, const struct pci_device_id *);
243 static void vmw_master_init(struct vmw_master *);
244 static int vmwgfx_pm_notifier(struct notifier_block *nb, unsigned long val,
245 void *ptr);
246
247 MODULE_PARM_DESC(enable_fbdev, "Enable vmwgfx fbdev");
248 module_param_named(enable_fbdev, enable_fbdev, int, 0600);
249 MODULE_PARM_DESC(force_dma_api, "Force using the DMA API for TTM pages");
250 module_param_named(force_dma_api, vmw_force_iommu, int, 0600);
251 MODULE_PARM_DESC(restrict_iommu, "Try to limit IOMMU usage for TTM pages");
252 module_param_named(restrict_iommu, vmw_restrict_iommu, int, 0600);
253 MODULE_PARM_DESC(force_coherent, "Force coherent TTM pages");
254 module_param_named(force_coherent, vmw_force_coherent, int, 0600);
255 MODULE_PARM_DESC(restrict_dma_mask, "Restrict DMA mask to 44 bits with IOMMU");
256 module_param_named(restrict_dma_mask, vmw_restrict_dma_mask, int, 0600);
257 MODULE_PARM_DESC(assume_16bpp, "Assume 16-bpp when filtering modes");
258 module_param_named(assume_16bpp, vmw_assume_16bpp, int, 0600);
259
260
261 static void vmw_print_capabilities(uint32_t capabilities)
262 {
263 DRM_INFO("Capabilities:\n");
264 if (capabilities & SVGA_CAP_RECT_COPY)
265 DRM_INFO(" Rect copy.\n");
266 if (capabilities & SVGA_CAP_CURSOR)
267 DRM_INFO(" Cursor.\n");
268 if (capabilities & SVGA_CAP_CURSOR_BYPASS)
269 DRM_INFO(" Cursor bypass.\n");
270 if (capabilities & SVGA_CAP_CURSOR_BYPASS_2)
271 DRM_INFO(" Cursor bypass 2.\n");
272 if (capabilities & SVGA_CAP_8BIT_EMULATION)
273 DRM_INFO(" 8bit emulation.\n");
274 if (capabilities & SVGA_CAP_ALPHA_CURSOR)
275 DRM_INFO(" Alpha cursor.\n");
276 if (capabilities & SVGA_CAP_3D)
277 DRM_INFO(" 3D.\n");
278 if (capabilities & SVGA_CAP_EXTENDED_FIFO)
279 DRM_INFO(" Extended Fifo.\n");
280 if (capabilities & SVGA_CAP_MULTIMON)
281 DRM_INFO(" Multimon.\n");
282 if (capabilities & SVGA_CAP_PITCHLOCK)
283 DRM_INFO(" Pitchlock.\n");
284 if (capabilities & SVGA_CAP_IRQMASK)
285 DRM_INFO(" Irq mask.\n");
286 if (capabilities & SVGA_CAP_DISPLAY_TOPOLOGY)
287 DRM_INFO(" Display Topology.\n");
288 if (capabilities & SVGA_CAP_GMR)
289 DRM_INFO(" GMR.\n");
290 if (capabilities & SVGA_CAP_TRACES)
291 DRM_INFO(" Traces.\n");
292 if (capabilities & SVGA_CAP_GMR2)
293 DRM_INFO(" GMR2.\n");
294 if (capabilities & SVGA_CAP_SCREEN_OBJECT_2)
295 DRM_INFO(" Screen Object 2.\n");
296 if (capabilities & SVGA_CAP_COMMAND_BUFFERS)
297 DRM_INFO(" Command Buffers.\n");
298 if (capabilities & SVGA_CAP_CMD_BUFFERS_2)
299 DRM_INFO(" Command Buffers 2.\n");
300 if (capabilities & SVGA_CAP_GBOBJECTS)
301 DRM_INFO(" Guest Backed Resources.\n");
302 if (capabilities & SVGA_CAP_DX)
303 DRM_INFO(" DX Features.\n");
304 if (capabilities & SVGA_CAP_HP_CMD_QUEUE)
305 DRM_INFO(" HP Command Queue.\n");
306 }
307
308 /**
309 * vmw_dummy_query_bo_create - create a bo to hold a dummy query result
310 *
311 * @dev_priv: A device private structure.
312 *
313 * This function creates a small buffer object that holds the query
314 * result for dummy queries emitted as query barriers.
315 * The function will then map the first page and initialize a pending
316 * occlusion query result structure, Finally it will unmap the buffer.
317 * No interruptible waits are done within this function.
318 *
319 * Returns an error if bo creation or initialization fails.
320 */
321 static int vmw_dummy_query_bo_create(struct vmw_private *dev_priv)
322 {
323 int ret;
324 struct vmw_dma_buffer *vbo;
325 struct ttm_bo_kmap_obj map;
326 volatile SVGA3dQueryResult *result;
327 bool dummy;
328
329 /*
330 * Create the vbo as pinned, so that a tryreserve will
331 * immediately succeed. This is because we're the only
332 * user of the bo currently.
333 */
334 vbo = kzalloc(sizeof(*vbo), GFP_KERNEL);
335 if (!vbo)
336 return -ENOMEM;
337
338 ret = vmw_dmabuf_init(dev_priv, vbo, PAGE_SIZE,
339 &vmw_sys_ne_placement, false,
340 &vmw_dmabuf_bo_free);
341 if (unlikely(ret != 0))
342 return ret;
343
344 ret = ttm_bo_reserve(&vbo->base, false, true, NULL);
345 BUG_ON(ret != 0);
346 vmw_bo_pin_reserved(vbo, true);
347
348 ret = ttm_bo_kmap(&vbo->base, 0, 1, &map);
349 if (likely(ret == 0)) {
350 result = ttm_kmap_obj_virtual(&map, &dummy);
351 result->totalSize = sizeof(*result);
352 result->state = SVGA3D_QUERYSTATE_PENDING;
353 result->result32 = 0xff;
354 ttm_bo_kunmap(&map);
355 }
356 vmw_bo_pin_reserved(vbo, false);
357 ttm_bo_unreserve(&vbo->base);
358
359 if (unlikely(ret != 0)) {
360 DRM_ERROR("Dummy query buffer map failed.\n");
361 vmw_dmabuf_unreference(&vbo);
362 } else
363 dev_priv->dummy_query_bo = vbo;
364
365 return ret;
366 }
367
368 /**
369 * vmw_request_device_late - Perform late device setup
370 *
371 * @dev_priv: Pointer to device private.
372 *
373 * This function performs setup of otables and enables large command
374 * buffer submission. These tasks are split out to a separate function
375 * because it reverts vmw_release_device_early and is intended to be used
376 * by an error path in the hibernation code.
377 */
378 static int vmw_request_device_late(struct vmw_private *dev_priv)
379 {
380 int ret;
381
382 if (dev_priv->has_mob) {
383 ret = vmw_otables_setup(dev_priv);
384 if (unlikely(ret != 0)) {
385 DRM_ERROR("Unable to initialize "
386 "guest Memory OBjects.\n");
387 return ret;
388 }
389 }
390
391 if (dev_priv->cman) {
392 ret = vmw_cmdbuf_set_pool_size(dev_priv->cman,
393 256*4096, 2*4096);
394 if (ret) {
395 struct vmw_cmdbuf_man *man = dev_priv->cman;
396
397 dev_priv->cman = NULL;
398 vmw_cmdbuf_man_destroy(man);
399 }
400 }
401
402 return 0;
403 }
404
405 static int vmw_request_device(struct vmw_private *dev_priv)
406 {
407 int ret;
408
409 ret = vmw_fifo_init(dev_priv, &dev_priv->fifo);
410 if (unlikely(ret != 0)) {
411 DRM_ERROR("Unable to initialize FIFO.\n");
412 return ret;
413 }
414 vmw_fence_fifo_up(dev_priv->fman);
415 dev_priv->cman = vmw_cmdbuf_man_create(dev_priv);
416 if (IS_ERR(dev_priv->cman)) {
417 dev_priv->cman = NULL;
418 dev_priv->has_dx = false;
419 }
420
421 ret = vmw_request_device_late(dev_priv);
422 if (ret)
423 goto out_no_mob;
424
425 ret = vmw_dummy_query_bo_create(dev_priv);
426 if (unlikely(ret != 0))
427 goto out_no_query_bo;
428
429 return 0;
430
431 out_no_query_bo:
432 if (dev_priv->cman)
433 vmw_cmdbuf_remove_pool(dev_priv->cman);
434 if (dev_priv->has_mob) {
435 (void) ttm_bo_evict_mm(&dev_priv->bdev, VMW_PL_MOB);
436 vmw_otables_takedown(dev_priv);
437 }
438 if (dev_priv->cman)
439 vmw_cmdbuf_man_destroy(dev_priv->cman);
440 out_no_mob:
441 vmw_fence_fifo_down(dev_priv->fman);
442 vmw_fifo_release(dev_priv, &dev_priv->fifo);
443 return ret;
444 }
445
446 /**
447 * vmw_release_device_early - Early part of fifo takedown.
448 *
449 * @dev_priv: Pointer to device private struct.
450 *
451 * This is the first part of command submission takedown, to be called before
452 * buffer management is taken down.
453 */
454 static void vmw_release_device_early(struct vmw_private *dev_priv)
455 {
456 /*
457 * Previous destructions should've released
458 * the pinned bo.
459 */
460
461 BUG_ON(dev_priv->pinned_bo != NULL);
462
463 vmw_dmabuf_unreference(&dev_priv->dummy_query_bo);
464 if (dev_priv->cman)
465 vmw_cmdbuf_remove_pool(dev_priv->cman);
466
467 if (dev_priv->has_mob) {
468 ttm_bo_evict_mm(&dev_priv->bdev, VMW_PL_MOB);
469 vmw_otables_takedown(dev_priv);
470 }
471 }
472
473 /**
474 * vmw_release_device_late - Late part of fifo takedown.
475 *
476 * @dev_priv: Pointer to device private struct.
477 *
478 * This is the last part of the command submission takedown, to be called when
479 * command submission is no longer needed. It may wait on pending fences.
480 */
481 static void vmw_release_device_late(struct vmw_private *dev_priv)
482 {
483 vmw_fence_fifo_down(dev_priv->fman);
484 if (dev_priv->cman)
485 vmw_cmdbuf_man_destroy(dev_priv->cman);
486
487 vmw_fifo_release(dev_priv, &dev_priv->fifo);
488 }
489
490 /**
491 * Sets the initial_[width|height] fields on the given vmw_private.
492 *
493 * It does so by reading SVGA_REG_[WIDTH|HEIGHT] regs and then
494 * clamping the value to fb_max_[width|height] fields and the
495 * VMW_MIN_INITIAL_[WIDTH|HEIGHT].
496 * If the values appear to be invalid, set them to
497 * VMW_MIN_INITIAL_[WIDTH|HEIGHT].
498 */
499 static void vmw_get_initial_size(struct vmw_private *dev_priv)
500 {
501 uint32_t width;
502 uint32_t height;
503
504 width = vmw_read(dev_priv, SVGA_REG_WIDTH);
505 height = vmw_read(dev_priv, SVGA_REG_HEIGHT);
506
507 width = max_t(uint32_t, width, VMW_MIN_INITIAL_WIDTH);
508 height = max_t(uint32_t, height, VMW_MIN_INITIAL_HEIGHT);
509
510 if (width > dev_priv->fb_max_width ||
511 height > dev_priv->fb_max_height) {
512
513 /*
514 * This is a host error and shouldn't occur.
515 */
516
517 width = VMW_MIN_INITIAL_WIDTH;
518 height = VMW_MIN_INITIAL_HEIGHT;
519 }
520
521 dev_priv->initial_width = width;
522 dev_priv->initial_height = height;
523 }
524
525 /**
526 * vmw_dma_select_mode - Determine how DMA mappings should be set up for this
527 * system.
528 *
529 * @dev_priv: Pointer to a struct vmw_private
530 *
531 * This functions tries to determine the IOMMU setup and what actions
532 * need to be taken by the driver to make system pages visible to the
533 * device.
534 * If this function decides that DMA is not possible, it returns -EINVAL.
535 * The driver may then try to disable features of the device that require
536 * DMA.
537 */
538 static int vmw_dma_select_mode(struct vmw_private *dev_priv)
539 {
540 static const char *names[vmw_dma_map_max] = {
541 [vmw_dma_phys] = "Using physical TTM page addresses.",
542 [vmw_dma_alloc_coherent] = "Using coherent TTM pages.",
543 [vmw_dma_map_populate] = "Keeping DMA mappings.",
544 [vmw_dma_map_bind] = "Giving up DMA mappings early."};
545 #ifdef CONFIG_X86
546 const struct dma_map_ops *dma_ops = get_dma_ops(dev_priv->dev->dev);
547
548 #ifdef CONFIG_INTEL_IOMMU
549 if (intel_iommu_enabled) {
550 dev_priv->map_mode = vmw_dma_map_populate;
551 goto out_fixup;
552 }
553 #endif
554
555 if (!(vmw_force_iommu || vmw_force_coherent)) {
556 dev_priv->map_mode = vmw_dma_phys;
557 DRM_INFO("DMA map mode: %s\n", names[dev_priv->map_mode]);
558 return 0;
559 }
560
561 dev_priv->map_mode = vmw_dma_map_populate;
562
563 if (dma_ops->sync_single_for_cpu)
564 dev_priv->map_mode = vmw_dma_alloc_coherent;
565 #ifdef CONFIG_SWIOTLB
566 if (swiotlb_nr_tbl() == 0)
567 dev_priv->map_mode = vmw_dma_map_populate;
568 #endif
569
570 #ifdef CONFIG_INTEL_IOMMU
571 out_fixup:
572 #endif
573 if (dev_priv->map_mode == vmw_dma_map_populate &&
574 vmw_restrict_iommu)
575 dev_priv->map_mode = vmw_dma_map_bind;
576
577 if (vmw_force_coherent)
578 dev_priv->map_mode = vmw_dma_alloc_coherent;
579
580 #if !defined(CONFIG_SWIOTLB) && !defined(CONFIG_INTEL_IOMMU)
581 /*
582 * No coherent page pool
583 */
584 if (dev_priv->map_mode == vmw_dma_alloc_coherent)
585 return -EINVAL;
586 #endif
587
588 #else /* CONFIG_X86 */
589 dev_priv->map_mode = vmw_dma_map_populate;
590 #endif /* CONFIG_X86 */
591
592 DRM_INFO("DMA map mode: %s\n", names[dev_priv->map_mode]);
593
594 return 0;
595 }
596
597 /**
598 * vmw_dma_masks - set required page- and dma masks
599 *
600 * @dev: Pointer to struct drm-device
601 *
602 * With 32-bit we can only handle 32 bit PFNs. Optionally set that
603 * restriction also for 64-bit systems.
604 */
605 #ifdef CONFIG_INTEL_IOMMU
606 static int vmw_dma_masks(struct vmw_private *dev_priv)
607 {
608 struct drm_device *dev = dev_priv->dev;
609
610 if (intel_iommu_enabled &&
611 (sizeof(unsigned long) == 4 || vmw_restrict_dma_mask)) {
612 DRM_INFO("Restricting DMA addresses to 44 bits.\n");
613 return dma_set_mask(dev->dev, DMA_BIT_MASK(44));
614 }
615 return 0;
616 }
617 #else
618 static int vmw_dma_masks(struct vmw_private *dev_priv)
619 {
620 return 0;
621 }
622 #endif
623
624 static int vmw_driver_load(struct drm_device *dev, unsigned long chipset)
625 {
626 struct vmw_private *dev_priv;
627 int ret;
628 uint32_t svga_id;
629 enum vmw_res_type i;
630 bool refuse_dma = false;
631 char host_log[100] = {0};
632
633 dev_priv = kzalloc(sizeof(*dev_priv), GFP_KERNEL);
634 if (unlikely(!dev_priv)) {
635 DRM_ERROR("Failed allocating a device private struct.\n");
636 return -ENOMEM;
637 }
638
639 pci_set_master(dev->pdev);
640
641 dev_priv->dev = dev;
642 dev_priv->vmw_chipset = chipset;
643 dev_priv->last_read_seqno = (uint32_t) -100;
644 mutex_init(&dev_priv->cmdbuf_mutex);
645 mutex_init(&dev_priv->release_mutex);
646 mutex_init(&dev_priv->binding_mutex);
647 mutex_init(&dev_priv->global_kms_state_mutex);
648 rwlock_init(&dev_priv->resource_lock);
649 ttm_lock_init(&dev_priv->reservation_sem);
650 spin_lock_init(&dev_priv->hw_lock);
651 spin_lock_init(&dev_priv->waiter_lock);
652 spin_lock_init(&dev_priv->cap_lock);
653 spin_lock_init(&dev_priv->svga_lock);
654 spin_lock_init(&dev_priv->cursor_lock);
655
656 for (i = vmw_res_context; i < vmw_res_max; ++i) {
657 idr_init(&dev_priv->res_idr[i]);
658 INIT_LIST_HEAD(&dev_priv->res_lru[i]);
659 }
660
661 mutex_init(&dev_priv->init_mutex);
662 init_waitqueue_head(&dev_priv->fence_queue);
663 init_waitqueue_head(&dev_priv->fifo_queue);
664 dev_priv->fence_queue_waiters = 0;
665 dev_priv->fifo_queue_waiters = 0;
666
667 dev_priv->used_memory_size = 0;
668
669 dev_priv->io_start = pci_resource_start(dev->pdev, 0);
670 dev_priv->vram_start = pci_resource_start(dev->pdev, 1);
671 dev_priv->mmio_start = pci_resource_start(dev->pdev, 2);
672
673 dev_priv->assume_16bpp = !!vmw_assume_16bpp;
674
675 dev_priv->enable_fb = enable_fbdev;
676
677 vmw_write(dev_priv, SVGA_REG_ID, SVGA_ID_2);
678 svga_id = vmw_read(dev_priv, SVGA_REG_ID);
679 if (svga_id != SVGA_ID_2) {
680 ret = -ENOSYS;
681 DRM_ERROR("Unsupported SVGA ID 0x%x\n", svga_id);
682 goto out_err0;
683 }
684
685 dev_priv->capabilities = vmw_read(dev_priv, SVGA_REG_CAPABILITIES);
686 ret = vmw_dma_select_mode(dev_priv);
687 if (unlikely(ret != 0)) {
688 DRM_INFO("Restricting capabilities due to IOMMU setup.\n");
689 refuse_dma = true;
690 }
691
692 dev_priv->vram_size = vmw_read(dev_priv, SVGA_REG_VRAM_SIZE);
693 dev_priv->mmio_size = vmw_read(dev_priv, SVGA_REG_MEM_SIZE);
694 dev_priv->fb_max_width = vmw_read(dev_priv, SVGA_REG_MAX_WIDTH);
695 dev_priv->fb_max_height = vmw_read(dev_priv, SVGA_REG_MAX_HEIGHT);
696
697 vmw_get_initial_size(dev_priv);
698
699 if (dev_priv->capabilities & SVGA_CAP_GMR2) {
700 dev_priv->max_gmr_ids =
701 vmw_read(dev_priv, SVGA_REG_GMR_MAX_IDS);
702 dev_priv->max_gmr_pages =
703 vmw_read(dev_priv, SVGA_REG_GMRS_MAX_PAGES);
704 dev_priv->memory_size =
705 vmw_read(dev_priv, SVGA_REG_MEMORY_SIZE);
706 dev_priv->memory_size -= dev_priv->vram_size;
707 } else {
708 /*
709 * An arbitrary limit of 512MiB on surface
710 * memory. But all HWV8 hardware supports GMR2.
711 */
712 dev_priv->memory_size = 512*1024*1024;
713 }
714 dev_priv->max_mob_pages = 0;
715 dev_priv->max_mob_size = 0;
716 if (dev_priv->capabilities & SVGA_CAP_GBOBJECTS) {
717 uint64_t mem_size =
718 vmw_read(dev_priv,
719 SVGA_REG_SUGGESTED_GBOBJECT_MEM_SIZE_KB);
720
721 /*
722 * Workaround for low memory 2D VMs to compensate for the
723 * allocation taken by fbdev
724 */
725 if (!(dev_priv->capabilities & SVGA_CAP_3D))
726 mem_size *= 3;
727
728 dev_priv->max_mob_pages = mem_size * 1024 / PAGE_SIZE;
729 dev_priv->prim_bb_mem =
730 vmw_read(dev_priv,
731 SVGA_REG_MAX_PRIMARY_BOUNDING_BOX_MEM);
732 dev_priv->max_mob_size =
733 vmw_read(dev_priv, SVGA_REG_MOB_MAX_SIZE);
734 dev_priv->stdu_max_width =
735 vmw_read(dev_priv, SVGA_REG_SCREENTARGET_MAX_WIDTH);
736 dev_priv->stdu_max_height =
737 vmw_read(dev_priv, SVGA_REG_SCREENTARGET_MAX_HEIGHT);
738
739 vmw_write(dev_priv, SVGA_REG_DEV_CAP,
740 SVGA3D_DEVCAP_MAX_TEXTURE_WIDTH);
741 dev_priv->texture_max_width = vmw_read(dev_priv,
742 SVGA_REG_DEV_CAP);
743 vmw_write(dev_priv, SVGA_REG_DEV_CAP,
744 SVGA3D_DEVCAP_MAX_TEXTURE_HEIGHT);
745 dev_priv->texture_max_height = vmw_read(dev_priv,
746 SVGA_REG_DEV_CAP);
747 } else {
748 dev_priv->texture_max_width = 8192;
749 dev_priv->texture_max_height = 8192;
750 dev_priv->prim_bb_mem = dev_priv->vram_size;
751 }
752
753 vmw_print_capabilities(dev_priv->capabilities);
754
755 ret = vmw_dma_masks(dev_priv);
756 if (unlikely(ret != 0))
757 goto out_err0;
758
759 if (dev_priv->capabilities & SVGA_CAP_GMR2) {
760 DRM_INFO("Max GMR ids is %u\n",
761 (unsigned)dev_priv->max_gmr_ids);
762 DRM_INFO("Max number of GMR pages is %u\n",
763 (unsigned)dev_priv->max_gmr_pages);
764 DRM_INFO("Max dedicated hypervisor surface memory is %u kiB\n",
765 (unsigned)dev_priv->memory_size / 1024);
766 }
767 DRM_INFO("Maximum display memory size is %u kiB\n",
768 dev_priv->prim_bb_mem / 1024);
769 DRM_INFO("VRAM at 0x%08x size is %u kiB\n",
770 dev_priv->vram_start, dev_priv->vram_size / 1024);
771 DRM_INFO("MMIO at 0x%08x size is %u kiB\n",
772 dev_priv->mmio_start, dev_priv->mmio_size / 1024);
773
774 ret = vmw_ttm_global_init(dev_priv);
775 if (unlikely(ret != 0))
776 goto out_err0;
777
778
779 vmw_master_init(&dev_priv->fbdev_master);
780 ttm_lock_set_kill(&dev_priv->fbdev_master.lock, false, SIGTERM);
781 dev_priv->active_master = &dev_priv->fbdev_master;
782
783 dev_priv->mmio_virt = memremap(dev_priv->mmio_start,
784 dev_priv->mmio_size, MEMREMAP_WB);
785
786 if (unlikely(dev_priv->mmio_virt == NULL)) {
787 ret = -ENOMEM;
788 DRM_ERROR("Failed mapping MMIO.\n");
789 goto out_err3;
790 }
791
792 /* Need mmio memory to check for fifo pitchlock cap. */
793 if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY) &&
794 !(dev_priv->capabilities & SVGA_CAP_PITCHLOCK) &&
795 !vmw_fifo_have_pitchlock(dev_priv)) {
796 ret = -ENOSYS;
797 DRM_ERROR("Hardware has no pitchlock\n");
798 goto out_err4;
799 }
800
801 dev_priv->tdev = ttm_object_device_init
802 (dev_priv->mem_global_ref.object, 12, &vmw_prime_dmabuf_ops);
803
804 if (unlikely(dev_priv->tdev == NULL)) {
805 DRM_ERROR("Unable to initialize TTM object management.\n");
806 ret = -ENOMEM;
807 goto out_err4;
808 }
809
810 dev->dev_private = dev_priv;
811
812 ret = pci_request_regions(dev->pdev, "vmwgfx probe");
813 dev_priv->stealth = (ret != 0);
814 if (dev_priv->stealth) {
815 /**
816 * Request at least the mmio PCI resource.
817 */
818
819 DRM_INFO("It appears like vesafb is loaded. "
820 "Ignore above error if any.\n");
821 ret = pci_request_region(dev->pdev, 2, "vmwgfx stealth probe");
822 if (unlikely(ret != 0)) {
823 DRM_ERROR("Failed reserving the SVGA MMIO resource.\n");
824 goto out_no_device;
825 }
826 }
827
828 if (dev_priv->capabilities & SVGA_CAP_IRQMASK) {
829 ret = vmw_irq_install(dev, dev->pdev->irq);
830 if (ret != 0) {
831 DRM_ERROR("Failed installing irq: %d\n", ret);
832 goto out_no_irq;
833 }
834 }
835
836 dev_priv->fman = vmw_fence_manager_init(dev_priv);
837 if (unlikely(dev_priv->fman == NULL)) {
838 ret = -ENOMEM;
839 goto out_no_fman;
840 }
841
842 ret = ttm_bo_device_init(&dev_priv->bdev,
843 dev_priv->bo_global_ref.ref.object,
844 &vmw_bo_driver,
845 dev->anon_inode->i_mapping,
846 VMWGFX_FILE_PAGE_OFFSET,
847 false);
848 if (unlikely(ret != 0)) {
849 DRM_ERROR("Failed initializing TTM buffer object driver.\n");
850 goto out_no_bdev;
851 }
852
853 /*
854 * Enable VRAM, but initially don't use it until SVGA is enabled and
855 * unhidden.
856 */
857 ret = ttm_bo_init_mm(&dev_priv->bdev, TTM_PL_VRAM,
858 (dev_priv->vram_size >> PAGE_SHIFT));
859 if (unlikely(ret != 0)) {
860 DRM_ERROR("Failed initializing memory manager for VRAM.\n");
861 goto out_no_vram;
862 }
863 dev_priv->bdev.man[TTM_PL_VRAM].use_type = false;
864
865 dev_priv->has_gmr = true;
866 if (((dev_priv->capabilities & (SVGA_CAP_GMR | SVGA_CAP_GMR2)) == 0) ||
867 refuse_dma || ttm_bo_init_mm(&dev_priv->bdev, VMW_PL_GMR,
868 VMW_PL_GMR) != 0) {
869 DRM_INFO("No GMR memory available. "
870 "Graphics memory resources are very limited.\n");
871 dev_priv->has_gmr = false;
872 }
873
874 if (dev_priv->capabilities & SVGA_CAP_GBOBJECTS) {
875 dev_priv->has_mob = true;
876 if (ttm_bo_init_mm(&dev_priv->bdev, VMW_PL_MOB,
877 VMW_PL_MOB) != 0) {
878 DRM_INFO("No MOB memory available. "
879 "3D will be disabled.\n");
880 dev_priv->has_mob = false;
881 }
882 }
883
884 if (dev_priv->has_mob) {
885 spin_lock(&dev_priv->cap_lock);
886 vmw_write(dev_priv, SVGA_REG_DEV_CAP, SVGA3D_DEVCAP_DX);
887 dev_priv->has_dx = !!vmw_read(dev_priv, SVGA_REG_DEV_CAP);
888 spin_unlock(&dev_priv->cap_lock);
889 }
890
891
892 ret = vmw_kms_init(dev_priv);
893 if (unlikely(ret != 0))
894 goto out_no_kms;
895 vmw_overlay_init(dev_priv);
896
897 ret = vmw_request_device(dev_priv);
898 if (ret)
899 goto out_no_fifo;
900
901 DRM_INFO("DX: %s\n", dev_priv->has_dx ? "yes." : "no.");
902 DRM_INFO("Atomic: %s\n",
903 (dev->driver->driver_features & DRIVER_ATOMIC) ? "yes" : "no");
904
905 snprintf(host_log, sizeof(host_log), "vmwgfx: %s-%s",
906 VMWGFX_REPO, VMWGFX_GIT_VERSION);
907 vmw_host_log(host_log);
908
909 memset(host_log, 0, sizeof(host_log));
910 snprintf(host_log, sizeof(host_log), "vmwgfx: Module Version: %d.%d.%d",
911 VMWGFX_DRIVER_MAJOR, VMWGFX_DRIVER_MINOR,
912 VMWGFX_DRIVER_PATCHLEVEL);
913 vmw_host_log(host_log);
914
915 if (dev_priv->enable_fb) {
916 vmw_fifo_resource_inc(dev_priv);
917 vmw_svga_enable(dev_priv);
918 vmw_fb_init(dev_priv);
919 }
920
921 dev_priv->pm_nb.notifier_call = vmwgfx_pm_notifier;
922 register_pm_notifier(&dev_priv->pm_nb);
923
924 return 0;
925
926 out_no_fifo:
927 vmw_overlay_close(dev_priv);
928 vmw_kms_close(dev_priv);
929 out_no_kms:
930 if (dev_priv->has_mob)
931 (void) ttm_bo_clean_mm(&dev_priv->bdev, VMW_PL_MOB);
932 if (dev_priv->has_gmr)
933 (void) ttm_bo_clean_mm(&dev_priv->bdev, VMW_PL_GMR);
934 (void)ttm_bo_clean_mm(&dev_priv->bdev, TTM_PL_VRAM);
935 out_no_vram:
936 (void)ttm_bo_device_release(&dev_priv->bdev);
937 out_no_bdev:
938 vmw_fence_manager_takedown(dev_priv->fman);
939 out_no_fman:
940 if (dev_priv->capabilities & SVGA_CAP_IRQMASK)
941 vmw_irq_uninstall(dev_priv->dev);
942 out_no_irq:
943 if (dev_priv->stealth)
944 pci_release_region(dev->pdev, 2);
945 else
946 pci_release_regions(dev->pdev);
947 out_no_device:
948 ttm_object_device_release(&dev_priv->tdev);
949 out_err4:
950 memunmap(dev_priv->mmio_virt);
951 out_err3:
952 vmw_ttm_global_release(dev_priv);
953 out_err0:
954 for (i = vmw_res_context; i < vmw_res_max; ++i)
955 idr_destroy(&dev_priv->res_idr[i]);
956
957 if (dev_priv->ctx.staged_bindings)
958 vmw_binding_state_free(dev_priv->ctx.staged_bindings);
959 kfree(dev_priv);
960 return ret;
961 }
962
963 static void vmw_driver_unload(struct drm_device *dev)
964 {
965 struct vmw_private *dev_priv = vmw_priv(dev);
966 enum vmw_res_type i;
967
968 unregister_pm_notifier(&dev_priv->pm_nb);
969
970 if (dev_priv->ctx.res_ht_initialized)
971 drm_ht_remove(&dev_priv->ctx.res_ht);
972 vfree(dev_priv->ctx.cmd_bounce);
973 if (dev_priv->enable_fb) {
974 vmw_fb_off(dev_priv);
975 vmw_fb_close(dev_priv);
976 vmw_fifo_resource_dec(dev_priv);
977 vmw_svga_disable(dev_priv);
978 }
979
980 vmw_kms_close(dev_priv);
981 vmw_overlay_close(dev_priv);
982
983 if (dev_priv->has_gmr)
984 (void)ttm_bo_clean_mm(&dev_priv->bdev, VMW_PL_GMR);
985 (void)ttm_bo_clean_mm(&dev_priv->bdev, TTM_PL_VRAM);
986
987 vmw_release_device_early(dev_priv);
988 if (dev_priv->has_mob)
989 (void) ttm_bo_clean_mm(&dev_priv->bdev, VMW_PL_MOB);
990 (void) ttm_bo_device_release(&dev_priv->bdev);
991 vmw_release_device_late(dev_priv);
992 vmw_fence_manager_takedown(dev_priv->fman);
993 if (dev_priv->capabilities & SVGA_CAP_IRQMASK)
994 vmw_irq_uninstall(dev_priv->dev);
995 if (dev_priv->stealth)
996 pci_release_region(dev->pdev, 2);
997 else
998 pci_release_regions(dev->pdev);
999
1000 ttm_object_device_release(&dev_priv->tdev);
1001 memunmap(dev_priv->mmio_virt);
1002 if (dev_priv->ctx.staged_bindings)
1003 vmw_binding_state_free(dev_priv->ctx.staged_bindings);
1004 vmw_ttm_global_release(dev_priv);
1005
1006 for (i = vmw_res_context; i < vmw_res_max; ++i)
1007 idr_destroy(&dev_priv->res_idr[i]);
1008
1009 kfree(dev_priv);
1010 }
1011
1012 static void vmw_postclose(struct drm_device *dev,
1013 struct drm_file *file_priv)
1014 {
1015 struct vmw_fpriv *vmw_fp;
1016
1017 vmw_fp = vmw_fpriv(file_priv);
1018
1019 if (vmw_fp->locked_master) {
1020 struct vmw_master *vmaster =
1021 vmw_master(vmw_fp->locked_master);
1022
1023 ttm_lock_set_kill(&vmaster->lock, true, SIGTERM);
1024 ttm_vt_unlock(&vmaster->lock);
1025 drm_master_put(&vmw_fp->locked_master);
1026 }
1027
1028 ttm_object_file_release(&vmw_fp->tfile);
1029 kfree(vmw_fp);
1030 }
1031
1032 static int vmw_driver_open(struct drm_device *dev, struct drm_file *file_priv)
1033 {
1034 struct vmw_private *dev_priv = vmw_priv(dev);
1035 struct vmw_fpriv *vmw_fp;
1036 int ret = -ENOMEM;
1037
1038 vmw_fp = kzalloc(sizeof(*vmw_fp), GFP_KERNEL);
1039 if (unlikely(!vmw_fp))
1040 return ret;
1041
1042 vmw_fp->tfile = ttm_object_file_init(dev_priv->tdev, 10);
1043 if (unlikely(vmw_fp->tfile == NULL))
1044 goto out_no_tfile;
1045
1046 file_priv->driver_priv = vmw_fp;
1047
1048 return 0;
1049
1050 out_no_tfile:
1051 kfree(vmw_fp);
1052 return ret;
1053 }
1054
1055 static struct vmw_master *vmw_master_check(struct drm_device *dev,
1056 struct drm_file *file_priv,
1057 unsigned int flags)
1058 {
1059 int ret;
1060 struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
1061 struct vmw_master *vmaster;
1062
1063 if (!drm_is_primary_client(file_priv) || !(flags & DRM_AUTH))
1064 return NULL;
1065
1066 ret = mutex_lock_interruptible(&dev->master_mutex);
1067 if (unlikely(ret != 0))
1068 return ERR_PTR(-ERESTARTSYS);
1069
1070 if (drm_is_current_master(file_priv)) {
1071 mutex_unlock(&dev->master_mutex);
1072 return NULL;
1073 }
1074
1075 /*
1076 * Check if we were previously master, but now dropped. In that
1077 * case, allow at least render node functionality.
1078 */
1079 if (vmw_fp->locked_master) {
1080 mutex_unlock(&dev->master_mutex);
1081
1082 if (flags & DRM_RENDER_ALLOW)
1083 return NULL;
1084
1085 DRM_ERROR("Dropped master trying to access ioctl that "
1086 "requires authentication.\n");
1087 return ERR_PTR(-EACCES);
1088 }
1089 mutex_unlock(&dev->master_mutex);
1090
1091 /*
1092 * Take the TTM lock. Possibly sleep waiting for the authenticating
1093 * master to become master again, or for a SIGTERM if the
1094 * authenticating master exits.
1095 */
1096 vmaster = vmw_master(file_priv->master);
1097 ret = ttm_read_lock(&vmaster->lock, true);
1098 if (unlikely(ret != 0))
1099 vmaster = ERR_PTR(ret);
1100
1101 return vmaster;
1102 }
1103
1104 static long vmw_generic_ioctl(struct file *filp, unsigned int cmd,
1105 unsigned long arg,
1106 long (*ioctl_func)(struct file *, unsigned int,
1107 unsigned long))
1108 {
1109 struct drm_file *file_priv = filp->private_data;
1110 struct drm_device *dev = file_priv->minor->dev;
1111 unsigned int nr = DRM_IOCTL_NR(cmd);
1112 struct vmw_master *vmaster;
1113 unsigned int flags;
1114 long ret;
1115
1116 /*
1117 * Do extra checking on driver private ioctls.
1118 */
1119
1120 if ((nr >= DRM_COMMAND_BASE) && (nr < DRM_COMMAND_END)
1121 && (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls)) {
1122 const struct drm_ioctl_desc *ioctl =
1123 &vmw_ioctls[nr - DRM_COMMAND_BASE];
1124
1125 if (nr == DRM_COMMAND_BASE + DRM_VMW_EXECBUF) {
1126 ret = (long) drm_ioctl_permit(ioctl->flags, file_priv);
1127 if (unlikely(ret != 0))
1128 return ret;
1129
1130 if (unlikely((cmd & (IOC_IN | IOC_OUT)) != IOC_IN))
1131 goto out_io_encoding;
1132
1133 return (long) vmw_execbuf_ioctl(dev, arg, file_priv,
1134 _IOC_SIZE(cmd));
1135 } else if (nr == DRM_COMMAND_BASE + DRM_VMW_UPDATE_LAYOUT) {
1136 if (!drm_is_current_master(file_priv) &&
1137 !capable(CAP_SYS_ADMIN))
1138 return -EACCES;
1139 }
1140
1141 if (unlikely(ioctl->cmd != cmd))
1142 goto out_io_encoding;
1143
1144 flags = ioctl->flags;
1145 } else if (!drm_ioctl_flags(nr, &flags))
1146 return -EINVAL;
1147
1148 vmaster = vmw_master_check(dev, file_priv, flags);
1149 if (IS_ERR(vmaster)) {
1150 ret = PTR_ERR(vmaster);
1151
1152 if (ret != -ERESTARTSYS)
1153 DRM_INFO("IOCTL ERROR Command %d, Error %ld.\n",
1154 nr, ret);
1155 return ret;
1156 }
1157
1158 ret = ioctl_func(filp, cmd, arg);
1159 if (vmaster)
1160 ttm_read_unlock(&vmaster->lock);
1161
1162 return ret;
1163
1164 out_io_encoding:
1165 DRM_ERROR("Invalid command format, ioctl %d\n",
1166 nr - DRM_COMMAND_BASE);
1167
1168 return -EINVAL;
1169 }
1170
1171 static long vmw_unlocked_ioctl(struct file *filp, unsigned int cmd,
1172 unsigned long arg)
1173 {
1174 return vmw_generic_ioctl(filp, cmd, arg, &drm_ioctl);
1175 }
1176
1177 #ifdef CONFIG_COMPAT
1178 static long vmw_compat_ioctl(struct file *filp, unsigned int cmd,
1179 unsigned long arg)
1180 {
1181 return vmw_generic_ioctl(filp, cmd, arg, &drm_compat_ioctl);
1182 }
1183 #endif
1184
1185 static void vmw_lastclose(struct drm_device *dev)
1186 {
1187 }
1188
1189 static void vmw_master_init(struct vmw_master *vmaster)
1190 {
1191 ttm_lock_init(&vmaster->lock);
1192 }
1193
1194 static int vmw_master_create(struct drm_device *dev,
1195 struct drm_master *master)
1196 {
1197 struct vmw_master *vmaster;
1198
1199 vmaster = kzalloc(sizeof(*vmaster), GFP_KERNEL);
1200 if (unlikely(!vmaster))
1201 return -ENOMEM;
1202
1203 vmw_master_init(vmaster);
1204 ttm_lock_set_kill(&vmaster->lock, true, SIGTERM);
1205 master->driver_priv = vmaster;
1206
1207 return 0;
1208 }
1209
1210 static void vmw_master_destroy(struct drm_device *dev,
1211 struct drm_master *master)
1212 {
1213 struct vmw_master *vmaster = vmw_master(master);
1214
1215 master->driver_priv = NULL;
1216 kfree(vmaster);
1217 }
1218
1219 static int vmw_master_set(struct drm_device *dev,
1220 struct drm_file *file_priv,
1221 bool from_open)
1222 {
1223 struct vmw_private *dev_priv = vmw_priv(dev);
1224 struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
1225 struct vmw_master *active = dev_priv->active_master;
1226 struct vmw_master *vmaster = vmw_master(file_priv->master);
1227 int ret = 0;
1228
1229 if (active) {
1230 BUG_ON(active != &dev_priv->fbdev_master);
1231 ret = ttm_vt_lock(&active->lock, false, vmw_fp->tfile);
1232 if (unlikely(ret != 0))
1233 return ret;
1234
1235 ttm_lock_set_kill(&active->lock, true, SIGTERM);
1236 dev_priv->active_master = NULL;
1237 }
1238
1239 ttm_lock_set_kill(&vmaster->lock, false, SIGTERM);
1240 if (!from_open) {
1241 ttm_vt_unlock(&vmaster->lock);
1242 BUG_ON(vmw_fp->locked_master != file_priv->master);
1243 drm_master_put(&vmw_fp->locked_master);
1244 }
1245
1246 dev_priv->active_master = vmaster;
1247 drm_sysfs_hotplug_event(dev);
1248
1249 return 0;
1250 }
1251
1252 static void vmw_master_drop(struct drm_device *dev,
1253 struct drm_file *file_priv)
1254 {
1255 struct vmw_private *dev_priv = vmw_priv(dev);
1256 struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
1257 struct vmw_master *vmaster = vmw_master(file_priv->master);
1258 int ret;
1259
1260 /**
1261 * Make sure the master doesn't disappear while we have
1262 * it locked.
1263 */
1264
1265 vmw_fp->locked_master = drm_master_get(file_priv->master);
1266 ret = ttm_vt_lock(&vmaster->lock, false, vmw_fp->tfile);
1267 vmw_kms_legacy_hotspot_clear(dev_priv);
1268 if (unlikely((ret != 0))) {
1269 DRM_ERROR("Unable to lock TTM at VT switch.\n");
1270 drm_master_put(&vmw_fp->locked_master);
1271 }
1272
1273 ttm_lock_set_kill(&vmaster->lock, false, SIGTERM);
1274
1275 if (!dev_priv->enable_fb)
1276 vmw_svga_disable(dev_priv);
1277
1278 dev_priv->active_master = &dev_priv->fbdev_master;
1279 ttm_lock_set_kill(&dev_priv->fbdev_master.lock, false, SIGTERM);
1280 ttm_vt_unlock(&dev_priv->fbdev_master.lock);
1281 }
1282
1283 /**
1284 * __vmw_svga_enable - Enable SVGA mode, FIFO and use of VRAM.
1285 *
1286 * @dev_priv: Pointer to device private struct.
1287 * Needs the reservation sem to be held in non-exclusive mode.
1288 */
1289 static void __vmw_svga_enable(struct vmw_private *dev_priv)
1290 {
1291 spin_lock(&dev_priv->svga_lock);
1292 if (!dev_priv->bdev.man[TTM_PL_VRAM].use_type) {
1293 vmw_write(dev_priv, SVGA_REG_ENABLE, SVGA_REG_ENABLE);
1294 dev_priv->bdev.man[TTM_PL_VRAM].use_type = true;
1295 }
1296 spin_unlock(&dev_priv->svga_lock);
1297 }
1298
1299 /**
1300 * vmw_svga_enable - Enable SVGA mode, FIFO and use of VRAM.
1301 *
1302 * @dev_priv: Pointer to device private struct.
1303 */
1304 void vmw_svga_enable(struct vmw_private *dev_priv)
1305 {
1306 (void) ttm_read_lock(&dev_priv->reservation_sem, false);
1307 __vmw_svga_enable(dev_priv);
1308 ttm_read_unlock(&dev_priv->reservation_sem);
1309 }
1310
1311 /**
1312 * __vmw_svga_disable - Disable SVGA mode and use of VRAM.
1313 *
1314 * @dev_priv: Pointer to device private struct.
1315 * Needs the reservation sem to be held in exclusive mode.
1316 * Will not empty VRAM. VRAM must be emptied by caller.
1317 */
1318 static void __vmw_svga_disable(struct vmw_private *dev_priv)
1319 {
1320 spin_lock(&dev_priv->svga_lock);
1321 if (dev_priv->bdev.man[TTM_PL_VRAM].use_type) {
1322 dev_priv->bdev.man[TTM_PL_VRAM].use_type = false;
1323 vmw_write(dev_priv, SVGA_REG_ENABLE,
1324 SVGA_REG_ENABLE_HIDE |
1325 SVGA_REG_ENABLE_ENABLE);
1326 }
1327 spin_unlock(&dev_priv->svga_lock);
1328 }
1329
1330 /**
1331 * vmw_svga_disable - Disable SVGA_MODE, and use of VRAM. Keep the fifo
1332 * running.
1333 *
1334 * @dev_priv: Pointer to device private struct.
1335 * Will empty VRAM.
1336 */
1337 void vmw_svga_disable(struct vmw_private *dev_priv)
1338 {
1339 /*
1340 * Disabling SVGA will turn off device modesetting capabilities, so
1341 * notify KMS about that so that it doesn't cache atomic state that
1342 * isn't valid anymore, for example crtcs turned on.
1343 * Strictly we'd want to do this under the SVGA lock (or an SVGA mutex),
1344 * but vmw_kms_lost_device() takes the reservation sem and thus we'll
1345 * end up with lock order reversal. Thus, a master may actually perform
1346 * a new modeset just after we call vmw_kms_lost_device() and race with
1347 * vmw_svga_disable(), but that should at worst cause atomic KMS state
1348 * to be inconsistent with the device, causing modesetting problems.
1349 *
1350 */
1351 vmw_kms_lost_device(dev_priv->dev);
1352 ttm_write_lock(&dev_priv->reservation_sem, false);
1353 spin_lock(&dev_priv->svga_lock);
1354 if (dev_priv->bdev.man[TTM_PL_VRAM].use_type) {
1355 dev_priv->bdev.man[TTM_PL_VRAM].use_type = false;
1356 spin_unlock(&dev_priv->svga_lock);
1357 if (ttm_bo_evict_mm(&dev_priv->bdev, TTM_PL_VRAM))
1358 DRM_ERROR("Failed evicting VRAM buffers.\n");
1359 vmw_write(dev_priv, SVGA_REG_ENABLE,
1360 SVGA_REG_ENABLE_HIDE |
1361 SVGA_REG_ENABLE_ENABLE);
1362 } else
1363 spin_unlock(&dev_priv->svga_lock);
1364 ttm_write_unlock(&dev_priv->reservation_sem);
1365 }
1366
1367 static void vmw_remove(struct pci_dev *pdev)
1368 {
1369 struct drm_device *dev = pci_get_drvdata(pdev);
1370
1371 pci_disable_device(pdev);
1372 drm_put_dev(dev);
1373 }
1374
1375 static int vmwgfx_pm_notifier(struct notifier_block *nb, unsigned long val,
1376 void *ptr)
1377 {
1378 struct vmw_private *dev_priv =
1379 container_of(nb, struct vmw_private, pm_nb);
1380
1381 switch (val) {
1382 case PM_HIBERNATION_PREPARE:
1383 /*
1384 * Take the reservation sem in write mode, which will make sure
1385 * there are no other processes holding a buffer object
1386 * reservation, meaning we should be able to evict all buffer
1387 * objects if needed.
1388 * Once user-space processes have been frozen, we can release
1389 * the lock again.
1390 */
1391 ttm_suspend_lock(&dev_priv->reservation_sem);
1392 dev_priv->suspend_locked = true;
1393 break;
1394 case PM_POST_HIBERNATION:
1395 case PM_POST_RESTORE:
1396 if (READ_ONCE(dev_priv->suspend_locked)) {
1397 dev_priv->suspend_locked = false;
1398 ttm_suspend_unlock(&dev_priv->reservation_sem);
1399 }
1400 break;
1401 default:
1402 break;
1403 }
1404 return 0;
1405 }
1406
1407 static int vmw_pci_suspend(struct pci_dev *pdev, pm_message_t state)
1408 {
1409 struct drm_device *dev = pci_get_drvdata(pdev);
1410 struct vmw_private *dev_priv = vmw_priv(dev);
1411
1412 if (dev_priv->refuse_hibernation)
1413 return -EBUSY;
1414
1415 pci_save_state(pdev);
1416 pci_disable_device(pdev);
1417 pci_set_power_state(pdev, PCI_D3hot);
1418 return 0;
1419 }
1420
1421 static int vmw_pci_resume(struct pci_dev *pdev)
1422 {
1423 pci_set_power_state(pdev, PCI_D0);
1424 pci_restore_state(pdev);
1425 return pci_enable_device(pdev);
1426 }
1427
1428 static int vmw_pm_suspend(struct device *kdev)
1429 {
1430 struct pci_dev *pdev = to_pci_dev(kdev);
1431 struct pm_message dummy;
1432
1433 dummy.event = 0;
1434
1435 return vmw_pci_suspend(pdev, dummy);
1436 }
1437
1438 static int vmw_pm_resume(struct device *kdev)
1439 {
1440 struct pci_dev *pdev = to_pci_dev(kdev);
1441
1442 return vmw_pci_resume(pdev);
1443 }
1444
1445 static int vmw_pm_freeze(struct device *kdev)
1446 {
1447 struct pci_dev *pdev = to_pci_dev(kdev);
1448 struct drm_device *dev = pci_get_drvdata(pdev);
1449 struct vmw_private *dev_priv = vmw_priv(dev);
1450 int ret;
1451
1452 /*
1453 * Unlock for vmw_kms_suspend.
1454 * No user-space processes should be running now.
1455 */
1456 ttm_suspend_unlock(&dev_priv->reservation_sem);
1457 ret = vmw_kms_suspend(dev_priv->dev);
1458 if (ret) {
1459 ttm_suspend_lock(&dev_priv->reservation_sem);
1460 DRM_ERROR("Failed to freeze modesetting.\n");
1461 return ret;
1462 }
1463 if (dev_priv->enable_fb)
1464 vmw_fb_off(dev_priv);
1465
1466 ttm_suspend_lock(&dev_priv->reservation_sem);
1467 vmw_execbuf_release_pinned_bo(dev_priv);
1468 vmw_resource_evict_all(dev_priv);
1469 vmw_release_device_early(dev_priv);
1470 ttm_bo_swapout_all(&dev_priv->bdev);
1471 if (dev_priv->enable_fb)
1472 vmw_fifo_resource_dec(dev_priv);
1473 if (atomic_read(&dev_priv->num_fifo_resources) != 0) {
1474 DRM_ERROR("Can't hibernate while 3D resources are active.\n");
1475 if (dev_priv->enable_fb)
1476 vmw_fifo_resource_inc(dev_priv);
1477 WARN_ON(vmw_request_device_late(dev_priv));
1478 dev_priv->suspend_locked = false;
1479 ttm_suspend_unlock(&dev_priv->reservation_sem);
1480 if (dev_priv->suspend_state)
1481 vmw_kms_resume(dev);
1482 if (dev_priv->enable_fb)
1483 vmw_fb_on(dev_priv);
1484 return -EBUSY;
1485 }
1486
1487 vmw_fence_fifo_down(dev_priv->fman);
1488 __vmw_svga_disable(dev_priv);
1489
1490 vmw_release_device_late(dev_priv);
1491 return 0;
1492 }
1493
1494 static int vmw_pm_restore(struct device *kdev)
1495 {
1496 struct pci_dev *pdev = to_pci_dev(kdev);
1497 struct drm_device *dev = pci_get_drvdata(pdev);
1498 struct vmw_private *dev_priv = vmw_priv(dev);
1499 int ret;
1500
1501 vmw_write(dev_priv, SVGA_REG_ID, SVGA_ID_2);
1502 (void) vmw_read(dev_priv, SVGA_REG_ID);
1503
1504 if (dev_priv->enable_fb)
1505 vmw_fifo_resource_inc(dev_priv);
1506
1507 ret = vmw_request_device(dev_priv);
1508 if (ret)
1509 return ret;
1510
1511 if (dev_priv->enable_fb)
1512 __vmw_svga_enable(dev_priv);
1513
1514 vmw_fence_fifo_up(dev_priv->fman);
1515 dev_priv->suspend_locked = false;
1516 ttm_suspend_unlock(&dev_priv->reservation_sem);
1517 if (dev_priv->suspend_state)
1518 vmw_kms_resume(dev_priv->dev);
1519
1520 if (dev_priv->enable_fb)
1521 vmw_fb_on(dev_priv);
1522
1523 return 0;
1524 }
1525
1526 static const struct dev_pm_ops vmw_pm_ops = {
1527 .freeze = vmw_pm_freeze,
1528 .thaw = vmw_pm_restore,
1529 .restore = vmw_pm_restore,
1530 .suspend = vmw_pm_suspend,
1531 .resume = vmw_pm_resume,
1532 };
1533
1534 static const struct file_operations vmwgfx_driver_fops = {
1535 .owner = THIS_MODULE,
1536 .open = drm_open,
1537 .release = drm_release,
1538 .unlocked_ioctl = vmw_unlocked_ioctl,
1539 .mmap = vmw_mmap,
1540 .poll = vmw_fops_poll,
1541 .read = vmw_fops_read,
1542 #if defined(CONFIG_COMPAT)
1543 .compat_ioctl = vmw_compat_ioctl,
1544 #endif
1545 .llseek = noop_llseek,
1546 };
1547
1548 static struct drm_driver driver = {
1549 .driver_features = DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED |
1550 DRIVER_MODESET | DRIVER_PRIME | DRIVER_RENDER | DRIVER_ATOMIC,
1551 .load = vmw_driver_load,
1552 .unload = vmw_driver_unload,
1553 .lastclose = vmw_lastclose,
1554 .get_vblank_counter = vmw_get_vblank_counter,
1555 .enable_vblank = vmw_enable_vblank,
1556 .disable_vblank = vmw_disable_vblank,
1557 .ioctls = vmw_ioctls,
1558 .num_ioctls = ARRAY_SIZE(vmw_ioctls),
1559 .master_create = vmw_master_create,
1560 .master_destroy = vmw_master_destroy,
1561 .master_set = vmw_master_set,
1562 .master_drop = vmw_master_drop,
1563 .open = vmw_driver_open,
1564 .postclose = vmw_postclose,
1565
1566 .dumb_create = vmw_dumb_create,
1567 .dumb_map_offset = vmw_dumb_map_offset,
1568 .dumb_destroy = vmw_dumb_destroy,
1569
1570 .prime_fd_to_handle = vmw_prime_fd_to_handle,
1571 .prime_handle_to_fd = vmw_prime_handle_to_fd,
1572
1573 .fops = &vmwgfx_driver_fops,
1574 .name = VMWGFX_DRIVER_NAME,
1575 .desc = VMWGFX_DRIVER_DESC,
1576 .date = VMWGFX_DRIVER_DATE,
1577 .major = VMWGFX_DRIVER_MAJOR,
1578 .minor = VMWGFX_DRIVER_MINOR,
1579 .patchlevel = VMWGFX_DRIVER_PATCHLEVEL
1580 };
1581
1582 static struct pci_driver vmw_pci_driver = {
1583 .name = VMWGFX_DRIVER_NAME,
1584 .id_table = vmw_pci_id_list,
1585 .probe = vmw_probe,
1586 .remove = vmw_remove,
1587 .driver = {
1588 .pm = &vmw_pm_ops
1589 }
1590 };
1591
1592 static int vmw_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1593 {
1594 return drm_get_pci_dev(pdev, ent, &driver);
1595 }
1596
1597 static int __init vmwgfx_init(void)
1598 {
1599 int ret;
1600
1601 if (vgacon_text_force())
1602 return -EINVAL;
1603
1604 ret = pci_register_driver(&vmw_pci_driver);
1605 if (ret)
1606 DRM_ERROR("Failed initializing DRM.\n");
1607 return ret;
1608 }
1609
1610 static void __exit vmwgfx_exit(void)
1611 {
1612 pci_unregister_driver(&vmw_pci_driver);
1613 }
1614
1615 module_init(vmwgfx_init);
1616 module_exit(vmwgfx_exit);
1617
1618 MODULE_AUTHOR("VMware Inc. and others");
1619 MODULE_DESCRIPTION("Standalone drm driver for the VMware SVGA device");
1620 MODULE_LICENSE("GPL and additional rights");
1621 MODULE_VERSION(__stringify(VMWGFX_DRIVER_MAJOR) "."
1622 __stringify(VMWGFX_DRIVER_MINOR) "."
1623 __stringify(VMWGFX_DRIVER_PATCHLEVEL) "."
1624 "0");
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