1 /* $NetBSD: vmwgfx_kms.c,v 1.7 2021/12/18 23:45:45 riastradh Exp $ */
2
3 // SPDX-License-Identifier: GPL-2.0 OR MIT
4 /**************************************************************************
5 *
6 * Copyright 2009-2015 VMware, Inc., Palo Alto, CA., USA
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the
10 * "Software"), to deal in the Software without restriction, including
11 * without limitation the rights to use, copy, modify, merge, publish,
12 * distribute, sub license, and/or sell copies of the Software, and to
13 * permit persons to whom the Software is furnished to do so, subject to
14 * the following conditions:
15 *
16 * The above copyright notice and this permission notice (including the
17 * next paragraph) shall be included in all copies or substantial portions
18 * of the Software.
19 *
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
23 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
24 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
25 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
26 * USE OR OTHER DEALINGS IN THE SOFTWARE.
27 *
28 **************************************************************************/
29
30 #include <sys/cdefs.h>
31 __KERNEL_RCSID(0, "$NetBSD: vmwgfx_kms.c,v 1.7 2021/12/18 23:45:45 riastradh Exp $");
32
33 #include <drm/drm_atomic.h>
34 #include <drm/drm_atomic_helper.h>
35 #include <drm/drm_damage_helper.h>
36 #include <drm/drm_fourcc.h>
37 #include <drm/drm_plane_helper.h>
38 #include <drm/drm_rect.h>
39 #include <drm/drm_sysfs.h>
40 #include <drm/drm_vblank.h>
41
42 #include "vmwgfx_kms.h"
43
44 /* Might need a hrtimer here? */
45 #define VMWGFX_PRESENT_RATE ((HZ / 60 > 0) ? HZ / 60 : 1)
46
vmw_du_cleanup(struct vmw_display_unit * du)47 void vmw_du_cleanup(struct vmw_display_unit *du)
48 {
49 drm_plane_cleanup(&du->primary);
50 drm_plane_cleanup(&du->cursor);
51
52 drm_connector_unregister(&du->connector);
53 drm_crtc_cleanup(&du->crtc);
54 drm_encoder_cleanup(&du->encoder);
55 drm_connector_cleanup(&du->connector);
56 }
57
58 /*
59 * Display Unit Cursor functions
60 */
61
vmw_cursor_update_image(struct vmw_private * dev_priv,u32 * image,u32 width,u32 height,u32 hotspotX,u32 hotspotY)62 static int vmw_cursor_update_image(struct vmw_private *dev_priv,
63 u32 *image, u32 width, u32 height,
64 u32 hotspotX, u32 hotspotY)
65 {
66 struct {
67 u32 cmd;
68 SVGAFifoCmdDefineAlphaCursor cursor;
69 } *cmd;
70 u32 image_size = width * height * 4;
71 u32 cmd_size = sizeof(*cmd) + image_size;
72
73 if (!image)
74 return -EINVAL;
75
76 cmd = VMW_FIFO_RESERVE(dev_priv, cmd_size);
77 if (unlikely(cmd == NULL))
78 return -ENOMEM;
79
80 memset(cmd, 0, sizeof(*cmd));
81
82 memcpy(&cmd[1], image, image_size);
83
84 cmd->cmd = SVGA_CMD_DEFINE_ALPHA_CURSOR;
85 cmd->cursor.id = 0;
86 cmd->cursor.width = width;
87 cmd->cursor.height = height;
88 cmd->cursor.hotspotX = hotspotX;
89 cmd->cursor.hotspotY = hotspotY;
90
91 vmw_fifo_commit_flush(dev_priv, cmd_size);
92
93 return 0;
94 }
95
vmw_cursor_update_bo(struct vmw_private * dev_priv,struct vmw_buffer_object * bo,u32 width,u32 height,u32 hotspotX,u32 hotspotY)96 static int vmw_cursor_update_bo(struct vmw_private *dev_priv,
97 struct vmw_buffer_object *bo,
98 u32 width, u32 height,
99 u32 hotspotX, u32 hotspotY)
100 {
101 struct ttm_bo_kmap_obj map;
102 unsigned long kmap_offset;
103 unsigned long kmap_num;
104 void *virtual;
105 bool dummy;
106 int ret;
107
108 kmap_offset = 0;
109 kmap_num = (width*height*4 + PAGE_SIZE - 1) >> PAGE_SHIFT;
110
111 ret = ttm_bo_reserve(&bo->base, true, false, NULL);
112 if (unlikely(ret != 0)) {
113 DRM_ERROR("reserve failed\n");
114 return -EINVAL;
115 }
116
117 ret = ttm_bo_kmap(&bo->base, kmap_offset, kmap_num, &map);
118 if (unlikely(ret != 0))
119 goto err_unreserve;
120
121 virtual = ttm_kmap_obj_virtual(&map, &dummy);
122 ret = vmw_cursor_update_image(dev_priv, virtual, width, height,
123 hotspotX, hotspotY);
124
125 ttm_bo_kunmap(&map);
126 err_unreserve:
127 ttm_bo_unreserve(&bo->base);
128
129 return ret;
130 }
131
132
vmw_cursor_update_position(struct vmw_private * dev_priv,bool show,int x,int y)133 static void vmw_cursor_update_position(struct vmw_private *dev_priv,
134 bool show, int x, int y)
135 {
136 u32 *fifo_mem = dev_priv->mmio_virt;
137 uint32_t count;
138
139 spin_lock(&dev_priv->cursor_lock);
140 vmw_mmio_write(show ? 1 : 0, fifo_mem + SVGA_FIFO_CURSOR_ON);
141 vmw_mmio_write(x, fifo_mem + SVGA_FIFO_CURSOR_X);
142 vmw_mmio_write(y, fifo_mem + SVGA_FIFO_CURSOR_Y);
143 count = vmw_mmio_read(fifo_mem + SVGA_FIFO_CURSOR_COUNT);
144 vmw_mmio_write(++count, fifo_mem + SVGA_FIFO_CURSOR_COUNT);
145 spin_unlock(&dev_priv->cursor_lock);
146 }
147
148
vmw_kms_cursor_snoop(struct vmw_surface * srf,struct ttm_object_file * tfile,struct ttm_buffer_object * bo,SVGA3dCmdHeader * header)149 void vmw_kms_cursor_snoop(struct vmw_surface *srf,
150 struct ttm_object_file *tfile,
151 struct ttm_buffer_object *bo,
152 SVGA3dCmdHeader *header)
153 {
154 struct ttm_bo_kmap_obj map;
155 unsigned long kmap_offset;
156 unsigned long kmap_num;
157 SVGA3dCopyBox *box;
158 unsigned box_count;
159 void *virtual;
160 bool dummy;
161 struct vmw_dma_cmd {
162 SVGA3dCmdHeader header;
163 SVGA3dCmdSurfaceDMA dma;
164 } *cmd;
165 int i, ret;
166
167 cmd = container_of(header, struct vmw_dma_cmd, header);
168
169 /* No snooper installed */
170 if (!srf->snooper.image)
171 return;
172
173 if (cmd->dma.host.face != 0 || cmd->dma.host.mipmap != 0) {
174 DRM_ERROR("face and mipmap for cursors should never != 0\n");
175 return;
176 }
177
178 if (cmd->header.size < 64) {
179 DRM_ERROR("at least one full copy box must be given\n");
180 return;
181 }
182
183 box = (SVGA3dCopyBox *)&cmd[1];
184 box_count = (cmd->header.size - sizeof(SVGA3dCmdSurfaceDMA)) /
185 sizeof(SVGA3dCopyBox);
186
187 if (cmd->dma.guest.ptr.offset % PAGE_SIZE ||
188 box->x != 0 || box->y != 0 || box->z != 0 ||
189 box->srcx != 0 || box->srcy != 0 || box->srcz != 0 ||
190 box->d != 1 || box_count != 1) {
191 /* TODO handle none page aligned offsets */
192 /* TODO handle more dst & src != 0 */
193 /* TODO handle more then one copy */
194 DRM_ERROR("Cant snoop dma request for cursor!\n");
195 DRM_ERROR("(%u, %u, %u) (%u, %u, %u) (%ux%ux%u) %u %u\n",
196 box->srcx, box->srcy, box->srcz,
197 box->x, box->y, box->z,
198 box->w, box->h, box->d, box_count,
199 cmd->dma.guest.ptr.offset);
200 return;
201 }
202
203 kmap_offset = cmd->dma.guest.ptr.offset >> PAGE_SHIFT;
204 kmap_num = (64*64*4) >> PAGE_SHIFT;
205
206 ret = ttm_bo_reserve(bo, true, false, NULL);
207 if (unlikely(ret != 0)) {
208 DRM_ERROR("reserve failed\n");
209 return;
210 }
211
212 ret = ttm_bo_kmap(bo, kmap_offset, kmap_num, &map);
213 if (unlikely(ret != 0))
214 goto err_unreserve;
215
216 virtual = ttm_kmap_obj_virtual(&map, &dummy);
217
218 if (box->w == 64 && cmd->dma.guest.pitch == 64*4) {
219 memcpy(srf->snooper.image, virtual, 64*64*4);
220 } else {
221 /* Image is unsigned pointer. */
222 for (i = 0; i < box->h; i++)
223 memcpy(srf->snooper.image + i * 64,
224 virtual + i * cmd->dma.guest.pitch,
225 box->w * 4);
226 }
227
228 srf->snooper.age++;
229
230 ttm_bo_kunmap(&map);
231 err_unreserve:
232 ttm_bo_unreserve(bo);
233 }
234
235 /**
236 * vmw_kms_legacy_hotspot_clear - Clear legacy hotspots
237 *
238 * @dev_priv: Pointer to the device private struct.
239 *
240 * Clears all legacy hotspots.
241 */
vmw_kms_legacy_hotspot_clear(struct vmw_private * dev_priv)242 void vmw_kms_legacy_hotspot_clear(struct vmw_private *dev_priv)
243 {
244 struct drm_device *dev = dev_priv->dev;
245 struct vmw_display_unit *du;
246 struct drm_crtc *crtc;
247
248 drm_modeset_lock_all(dev);
249 drm_for_each_crtc(crtc, dev) {
250 du = vmw_crtc_to_du(crtc);
251
252 du->hotspot_x = 0;
253 du->hotspot_y = 0;
254 }
255 drm_modeset_unlock_all(dev);
256 }
257
vmw_kms_cursor_post_execbuf(struct vmw_private * dev_priv)258 void vmw_kms_cursor_post_execbuf(struct vmw_private *dev_priv)
259 {
260 struct drm_device *dev = dev_priv->dev;
261 struct vmw_display_unit *du;
262 struct drm_crtc *crtc;
263
264 mutex_lock(&dev->mode_config.mutex);
265
266 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
267 du = vmw_crtc_to_du(crtc);
268 if (!du->cursor_surface ||
269 du->cursor_age == du->cursor_surface->snooper.age)
270 continue;
271
272 du->cursor_age = du->cursor_surface->snooper.age;
273 vmw_cursor_update_image(dev_priv,
274 du->cursor_surface->snooper.image,
275 64, 64,
276 du->hotspot_x + du->core_hotspot_x,
277 du->hotspot_y + du->core_hotspot_y);
278 }
279
280 mutex_unlock(&dev->mode_config.mutex);
281 }
282
283
vmw_du_cursor_plane_destroy(struct drm_plane * plane)284 void vmw_du_cursor_plane_destroy(struct drm_plane *plane)
285 {
286 vmw_cursor_update_position(plane->dev->dev_private, false, 0, 0);
287
288 drm_plane_cleanup(plane);
289 }
290
291
vmw_du_primary_plane_destroy(struct drm_plane * plane)292 void vmw_du_primary_plane_destroy(struct drm_plane *plane)
293 {
294 drm_plane_cleanup(plane);
295
296 /* Planes are static in our case so we don't free it */
297 }
298
299
300 /**
301 * vmw_du_vps_unpin_surf - unpins resource associated with a framebuffer surface
302 *
303 * @vps: plane state associated with the display surface
304 * @unreference: true if we also want to unreference the display.
305 */
vmw_du_plane_unpin_surf(struct vmw_plane_state * vps,bool unreference)306 void vmw_du_plane_unpin_surf(struct vmw_plane_state *vps,
307 bool unreference)
308 {
309 if (vps->surf) {
310 if (vps->pinned) {
311 vmw_resource_unpin(&vps->surf->res);
312 vps->pinned--;
313 }
314
315 if (unreference) {
316 if (vps->pinned)
317 DRM_ERROR("Surface still pinned\n");
318 vmw_surface_unreference(&vps->surf);
319 }
320 }
321 }
322
323
324 /**
325 * vmw_du_plane_cleanup_fb - Unpins the cursor
326 *
327 * @plane: display plane
328 * @old_state: Contains the FB to clean up
329 *
330 * Unpins the framebuffer surface
331 *
332 * Returns 0 on success
333 */
334 void
vmw_du_plane_cleanup_fb(struct drm_plane * plane,struct drm_plane_state * old_state)335 vmw_du_plane_cleanup_fb(struct drm_plane *plane,
336 struct drm_plane_state *old_state)
337 {
338 struct vmw_plane_state *vps = vmw_plane_state_to_vps(old_state);
339
340 vmw_du_plane_unpin_surf(vps, false);
341 }
342
343
344 /**
345 * vmw_du_cursor_plane_prepare_fb - Readies the cursor by referencing it
346 *
347 * @plane: display plane
348 * @new_state: info on the new plane state, including the FB
349 *
350 * Returns 0 on success
351 */
352 int
vmw_du_cursor_plane_prepare_fb(struct drm_plane * plane,struct drm_plane_state * new_state)353 vmw_du_cursor_plane_prepare_fb(struct drm_plane *plane,
354 struct drm_plane_state *new_state)
355 {
356 struct drm_framebuffer *fb = new_state->fb;
357 struct vmw_plane_state *vps = vmw_plane_state_to_vps(new_state);
358
359
360 if (vps->surf)
361 vmw_surface_unreference(&vps->surf);
362
363 if (vps->bo)
364 vmw_bo_unreference(&vps->bo);
365
366 if (fb) {
367 if (vmw_framebuffer_to_vfb(fb)->bo) {
368 vps->bo = vmw_framebuffer_to_vfbd(fb)->buffer;
369 vmw_bo_reference(vps->bo);
370 } else {
371 vps->surf = vmw_framebuffer_to_vfbs(fb)->surface;
372 vmw_surface_reference(vps->surf);
373 }
374 }
375
376 return 0;
377 }
378
379
380 void
vmw_du_cursor_plane_atomic_update(struct drm_plane * plane,struct drm_plane_state * old_state)381 vmw_du_cursor_plane_atomic_update(struct drm_plane *plane,
382 struct drm_plane_state *old_state)
383 {
384 struct drm_crtc *crtc = plane->state->crtc ?: old_state->crtc;
385 struct vmw_private *dev_priv = vmw_priv(crtc->dev);
386 struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
387 struct vmw_plane_state *vps = vmw_plane_state_to_vps(plane->state);
388 s32 hotspot_x, hotspot_y;
389 int ret = 0;
390
391
392 hotspot_x = du->hotspot_x;
393 hotspot_y = du->hotspot_y;
394
395 if (plane->state->fb) {
396 hotspot_x += plane->state->fb->hot_x;
397 hotspot_y += plane->state->fb->hot_y;
398 }
399
400 du->cursor_surface = vps->surf;
401 du->cursor_bo = vps->bo;
402
403 if (vps->surf) {
404 du->cursor_age = du->cursor_surface->snooper.age;
405
406 ret = vmw_cursor_update_image(dev_priv,
407 vps->surf->snooper.image,
408 64, 64, hotspot_x,
409 hotspot_y);
410 } else if (vps->bo) {
411 ret = vmw_cursor_update_bo(dev_priv, vps->bo,
412 plane->state->crtc_w,
413 plane->state->crtc_h,
414 hotspot_x, hotspot_y);
415 } else {
416 vmw_cursor_update_position(dev_priv, false, 0, 0);
417 return;
418 }
419
420 if (!ret) {
421 du->cursor_x = plane->state->crtc_x + du->set_gui_x;
422 du->cursor_y = plane->state->crtc_y + du->set_gui_y;
423
424 vmw_cursor_update_position(dev_priv, true,
425 du->cursor_x + hotspot_x,
426 du->cursor_y + hotspot_y);
427
428 du->core_hotspot_x = hotspot_x - du->hotspot_x;
429 du->core_hotspot_y = hotspot_y - du->hotspot_y;
430 } else {
431 DRM_ERROR("Failed to update cursor image\n");
432 }
433 }
434
435
436 /**
437 * vmw_du_primary_plane_atomic_check - check if the new state is okay
438 *
439 * @plane: display plane
440 * @state: info on the new plane state, including the FB
441 *
442 * Check if the new state is settable given the current state. Other
443 * than what the atomic helper checks, we care about crtc fitting
444 * the FB and maintaining one active framebuffer.
445 *
446 * Returns 0 on success
447 */
vmw_du_primary_plane_atomic_check(struct drm_plane * plane,struct drm_plane_state * state)448 int vmw_du_primary_plane_atomic_check(struct drm_plane *plane,
449 struct drm_plane_state *state)
450 {
451 struct drm_crtc_state *crtc_state = NULL;
452 struct drm_framebuffer *new_fb = state->fb;
453 int ret;
454
455 if (state->crtc)
456 crtc_state = drm_atomic_get_new_crtc_state(state->state, state->crtc);
457
458 ret = drm_atomic_helper_check_plane_state(state, crtc_state,
459 DRM_PLANE_HELPER_NO_SCALING,
460 DRM_PLANE_HELPER_NO_SCALING,
461 false, true);
462
463 if (!ret && new_fb) {
464 struct drm_crtc *crtc = state->crtc;
465 struct vmw_connector_state *vcs;
466 struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
467
468 vcs = vmw_connector_state_to_vcs(du->connector.state);
469 }
470
471
472 return ret;
473 }
474
475
476 /**
477 * vmw_du_cursor_plane_atomic_check - check if the new state is okay
478 *
479 * @plane: cursor plane
480 * @state: info on the new plane state
481 *
482 * This is a chance to fail if the new cursor state does not fit
483 * our requirements.
484 *
485 * Returns 0 on success
486 */
vmw_du_cursor_plane_atomic_check(struct drm_plane * plane,struct drm_plane_state * new_state)487 int vmw_du_cursor_plane_atomic_check(struct drm_plane *plane,
488 struct drm_plane_state *new_state)
489 {
490 int ret = 0;
491 struct drm_crtc_state *crtc_state = NULL;
492 struct vmw_surface *surface = NULL;
493 struct drm_framebuffer *fb = new_state->fb;
494
495 if (new_state->crtc)
496 crtc_state = drm_atomic_get_new_crtc_state(new_state->state,
497 new_state->crtc);
498
499 ret = drm_atomic_helper_check_plane_state(new_state, crtc_state,
500 DRM_PLANE_HELPER_NO_SCALING,
501 DRM_PLANE_HELPER_NO_SCALING,
502 true, true);
503 if (ret)
504 return ret;
505
506 /* Turning off */
507 if (!fb)
508 return 0;
509
510 /* A lot of the code assumes this */
511 if (new_state->crtc_w != 64 || new_state->crtc_h != 64) {
512 DRM_ERROR("Invalid cursor dimensions (%d, %d)\n",
513 new_state->crtc_w, new_state->crtc_h);
514 ret = -EINVAL;
515 }
516
517 if (!vmw_framebuffer_to_vfb(fb)->bo)
518 surface = vmw_framebuffer_to_vfbs(fb)->surface;
519
520 if (surface && !surface->snooper.image) {
521 DRM_ERROR("surface not suitable for cursor\n");
522 ret = -EINVAL;
523 }
524
525 return ret;
526 }
527
528
vmw_du_crtc_atomic_check(struct drm_crtc * crtc,struct drm_crtc_state * new_state)529 int vmw_du_crtc_atomic_check(struct drm_crtc *crtc,
530 struct drm_crtc_state *new_state)
531 {
532 struct vmw_display_unit *du = vmw_crtc_to_du(new_state->crtc);
533 int connector_mask = drm_connector_mask(&du->connector);
534 bool has_primary = new_state->plane_mask &
535 drm_plane_mask(crtc->primary);
536
537 /* We always want to have an active plane with an active CRTC */
538 if (has_primary != new_state->enable)
539 return -EINVAL;
540
541
542 if (new_state->connector_mask != connector_mask &&
543 new_state->connector_mask != 0) {
544 DRM_ERROR("Invalid connectors configuration\n");
545 return -EINVAL;
546 }
547
548 /*
549 * Our virtual device does not have a dot clock, so use the logical
550 * clock value as the dot clock.
551 */
552 if (new_state->mode.crtc_clock == 0)
553 new_state->adjusted_mode.crtc_clock = new_state->mode.clock;
554
555 return 0;
556 }
557
558
vmw_du_crtc_atomic_begin(struct drm_crtc * crtc,struct drm_crtc_state * old_crtc_state)559 void vmw_du_crtc_atomic_begin(struct drm_crtc *crtc,
560 struct drm_crtc_state *old_crtc_state)
561 {
562 }
563
564
vmw_du_crtc_atomic_flush(struct drm_crtc * crtc,struct drm_crtc_state * old_crtc_state)565 void vmw_du_crtc_atomic_flush(struct drm_crtc *crtc,
566 struct drm_crtc_state *old_crtc_state)
567 {
568 struct drm_pending_vblank_event *event = crtc->state->event;
569
570 if (event) {
571 crtc->state->event = NULL;
572
573 spin_lock_irq(&crtc->dev->event_lock);
574 drm_crtc_send_vblank_event(crtc, event);
575 spin_unlock_irq(&crtc->dev->event_lock);
576 }
577 }
578
579
580 /**
581 * vmw_du_crtc_duplicate_state - duplicate crtc state
582 * @crtc: DRM crtc
583 *
584 * Allocates and returns a copy of the crtc state (both common and
585 * vmw-specific) for the specified crtc.
586 *
587 * Returns: The newly allocated crtc state, or NULL on failure.
588 */
589 struct drm_crtc_state *
vmw_du_crtc_duplicate_state(struct drm_crtc * crtc)590 vmw_du_crtc_duplicate_state(struct drm_crtc *crtc)
591 {
592 struct drm_crtc_state *state;
593 struct vmw_crtc_state *vcs;
594
595 if (WARN_ON(!crtc->state))
596 return NULL;
597
598 vcs = kmemdup(crtc->state, sizeof(*vcs), GFP_KERNEL);
599
600 if (!vcs)
601 return NULL;
602
603 state = &vcs->base;
604
605 __drm_atomic_helper_crtc_duplicate_state(crtc, state);
606
607 return state;
608 }
609
610
611 /**
612 * vmw_du_crtc_reset - creates a blank vmw crtc state
613 * @crtc: DRM crtc
614 *
615 * Resets the atomic state for @crtc by freeing the state pointer (which
616 * might be NULL, e.g. at driver load time) and allocating a new empty state
617 * object.
618 */
vmw_du_crtc_reset(struct drm_crtc * crtc)619 void vmw_du_crtc_reset(struct drm_crtc *crtc)
620 {
621 struct vmw_crtc_state *vcs;
622
623
624 if (crtc->state) {
625 __drm_atomic_helper_crtc_destroy_state(crtc->state);
626
627 kfree(vmw_crtc_state_to_vcs(crtc->state));
628 }
629
630 vcs = kzalloc(sizeof(*vcs), GFP_KERNEL);
631
632 if (!vcs) {
633 DRM_ERROR("Cannot allocate vmw_crtc_state\n");
634 return;
635 }
636
637 crtc->state = &vcs->base;
638 crtc->state->crtc = crtc;
639 }
640
641
642 /**
643 * vmw_du_crtc_destroy_state - destroy crtc state
644 * @crtc: DRM crtc
645 * @state: state object to destroy
646 *
647 * Destroys the crtc state (both common and vmw-specific) for the
648 * specified plane.
649 */
650 void
vmw_du_crtc_destroy_state(struct drm_crtc * crtc,struct drm_crtc_state * state)651 vmw_du_crtc_destroy_state(struct drm_crtc *crtc,
652 struct drm_crtc_state *state)
653 {
654 drm_atomic_helper_crtc_destroy_state(crtc, state);
655 }
656
657
658 /**
659 * vmw_du_plane_duplicate_state - duplicate plane state
660 * @plane: drm plane
661 *
662 * Allocates and returns a copy of the plane state (both common and
663 * vmw-specific) for the specified plane.
664 *
665 * Returns: The newly allocated plane state, or NULL on failure.
666 */
667 struct drm_plane_state *
vmw_du_plane_duplicate_state(struct drm_plane * plane)668 vmw_du_plane_duplicate_state(struct drm_plane *plane)
669 {
670 struct drm_plane_state *state;
671 struct vmw_plane_state *vps;
672
673 vps = kmemdup(plane->state, sizeof(*vps), GFP_KERNEL);
674
675 if (!vps)
676 return NULL;
677
678 vps->pinned = 0;
679 vps->cpp = 0;
680
681 /* Each ref counted resource needs to be acquired again */
682 if (vps->surf)
683 (void) vmw_surface_reference(vps->surf);
684
685 if (vps->bo)
686 (void) vmw_bo_reference(vps->bo);
687
688 state = &vps->base;
689
690 __drm_atomic_helper_plane_duplicate_state(plane, state);
691
692 return state;
693 }
694
695
696 /**
697 * vmw_du_plane_reset - creates a blank vmw plane state
698 * @plane: drm plane
699 *
700 * Resets the atomic state for @plane by freeing the state pointer (which might
701 * be NULL, e.g. at driver load time) and allocating a new empty state object.
702 */
vmw_du_plane_reset(struct drm_plane * plane)703 void vmw_du_plane_reset(struct drm_plane *plane)
704 {
705 struct vmw_plane_state *vps;
706
707
708 if (plane->state)
709 vmw_du_plane_destroy_state(plane, plane->state);
710
711 vps = kzalloc(sizeof(*vps), GFP_KERNEL);
712
713 if (!vps) {
714 DRM_ERROR("Cannot allocate vmw_plane_state\n");
715 return;
716 }
717
718 __drm_atomic_helper_plane_reset(plane, &vps->base);
719 }
720
721
722 /**
723 * vmw_du_plane_destroy_state - destroy plane state
724 * @plane: DRM plane
725 * @state: state object to destroy
726 *
727 * Destroys the plane state (both common and vmw-specific) for the
728 * specified plane.
729 */
730 void
vmw_du_plane_destroy_state(struct drm_plane * plane,struct drm_plane_state * state)731 vmw_du_plane_destroy_state(struct drm_plane *plane,
732 struct drm_plane_state *state)
733 {
734 struct vmw_plane_state *vps = vmw_plane_state_to_vps(state);
735
736
737 /* Should have been freed by cleanup_fb */
738 if (vps->surf)
739 vmw_surface_unreference(&vps->surf);
740
741 if (vps->bo)
742 vmw_bo_unreference(&vps->bo);
743
744 drm_atomic_helper_plane_destroy_state(plane, state);
745 }
746
747
748 /**
749 * vmw_du_connector_duplicate_state - duplicate connector state
750 * @connector: DRM connector
751 *
752 * Allocates and returns a copy of the connector state (both common and
753 * vmw-specific) for the specified connector.
754 *
755 * Returns: The newly allocated connector state, or NULL on failure.
756 */
757 struct drm_connector_state *
vmw_du_connector_duplicate_state(struct drm_connector * connector)758 vmw_du_connector_duplicate_state(struct drm_connector *connector)
759 {
760 struct drm_connector_state *state;
761 struct vmw_connector_state *vcs;
762
763 if (WARN_ON(!connector->state))
764 return NULL;
765
766 vcs = kmemdup(connector->state, sizeof(*vcs), GFP_KERNEL);
767
768 if (!vcs)
769 return NULL;
770
771 state = &vcs->base;
772
773 __drm_atomic_helper_connector_duplicate_state(connector, state);
774
775 return state;
776 }
777
778
779 /**
780 * vmw_du_connector_reset - creates a blank vmw connector state
781 * @connector: DRM connector
782 *
783 * Resets the atomic state for @connector by freeing the state pointer (which
784 * might be NULL, e.g. at driver load time) and allocating a new empty state
785 * object.
786 */
vmw_du_connector_reset(struct drm_connector * connector)787 void vmw_du_connector_reset(struct drm_connector *connector)
788 {
789 struct vmw_connector_state *vcs;
790
791
792 if (connector->state) {
793 __drm_atomic_helper_connector_destroy_state(connector->state);
794
795 kfree(vmw_connector_state_to_vcs(connector->state));
796 }
797
798 vcs = kzalloc(sizeof(*vcs), GFP_KERNEL);
799
800 if (!vcs) {
801 DRM_ERROR("Cannot allocate vmw_connector_state\n");
802 return;
803 }
804
805 __drm_atomic_helper_connector_reset(connector, &vcs->base);
806 }
807
808
809 /**
810 * vmw_du_connector_destroy_state - destroy connector state
811 * @connector: DRM connector
812 * @state: state object to destroy
813 *
814 * Destroys the connector state (both common and vmw-specific) for the
815 * specified plane.
816 */
817 void
vmw_du_connector_destroy_state(struct drm_connector * connector,struct drm_connector_state * state)818 vmw_du_connector_destroy_state(struct drm_connector *connector,
819 struct drm_connector_state *state)
820 {
821 drm_atomic_helper_connector_destroy_state(connector, state);
822 }
823 /*
824 * Generic framebuffer code
825 */
826
827 /*
828 * Surface framebuffer code
829 */
830
vmw_framebuffer_surface_destroy(struct drm_framebuffer * framebuffer)831 static void vmw_framebuffer_surface_destroy(struct drm_framebuffer *framebuffer)
832 {
833 struct vmw_framebuffer_surface *vfbs =
834 vmw_framebuffer_to_vfbs(framebuffer);
835
836 drm_framebuffer_cleanup(framebuffer);
837 vmw_surface_unreference(&vfbs->surface);
838 if (vfbs->base.user_obj)
839 ttm_base_object_unref(&vfbs->base.user_obj);
840
841 kfree(vfbs);
842 }
843
844 /**
845 * vmw_kms_readback - Perform a readback from the screen system to
846 * a buffer-object backed framebuffer.
847 *
848 * @dev_priv: Pointer to the device private structure.
849 * @file_priv: Pointer to a struct drm_file identifying the caller.
850 * Must be set to NULL if @user_fence_rep is NULL.
851 * @vfb: Pointer to the buffer-object backed framebuffer.
852 * @user_fence_rep: User-space provided structure for fence information.
853 * Must be set to non-NULL if @file_priv is non-NULL.
854 * @vclips: Array of clip rects.
855 * @num_clips: Number of clip rects in @vclips.
856 *
857 * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
858 * interrupted.
859 */
vmw_kms_readback(struct vmw_private * dev_priv,struct drm_file * file_priv,struct vmw_framebuffer * vfb,struct drm_vmw_fence_rep __user * user_fence_rep,struct drm_vmw_rect * vclips,uint32_t num_clips)860 int vmw_kms_readback(struct vmw_private *dev_priv,
861 struct drm_file *file_priv,
862 struct vmw_framebuffer *vfb,
863 struct drm_vmw_fence_rep __user *user_fence_rep,
864 struct drm_vmw_rect *vclips,
865 uint32_t num_clips)
866 {
867 switch (dev_priv->active_display_unit) {
868 case vmw_du_screen_object:
869 return vmw_kms_sou_readback(dev_priv, file_priv, vfb,
870 user_fence_rep, vclips, num_clips,
871 NULL);
872 case vmw_du_screen_target:
873 return vmw_kms_stdu_dma(dev_priv, file_priv, vfb,
874 user_fence_rep, NULL, vclips, num_clips,
875 1, false, true, NULL);
876 default:
877 WARN_ONCE(true,
878 "Readback called with invalid display system.\n");
879 }
880
881 return -ENOSYS;
882 }
883
884
885 static const struct drm_framebuffer_funcs vmw_framebuffer_surface_funcs = {
886 .destroy = vmw_framebuffer_surface_destroy,
887 .dirty = drm_atomic_helper_dirtyfb,
888 };
889
vmw_kms_new_framebuffer_surface(struct vmw_private * dev_priv,struct vmw_surface * surface,struct vmw_framebuffer ** out,const struct drm_mode_fb_cmd2 * mode_cmd,bool is_bo_proxy)890 static int vmw_kms_new_framebuffer_surface(struct vmw_private *dev_priv,
891 struct vmw_surface *surface,
892 struct vmw_framebuffer **out,
893 const struct drm_mode_fb_cmd2
894 *mode_cmd,
895 bool is_bo_proxy)
896
897 {
898 struct drm_device *dev = dev_priv->dev;
899 struct vmw_framebuffer_surface *vfbs;
900 enum SVGA3dSurfaceFormat format;
901 int ret;
902 struct drm_format_name_buf format_name;
903
904 /* 3D is only supported on HWv8 and newer hosts */
905 if (dev_priv->active_display_unit == vmw_du_legacy)
906 return -ENOSYS;
907
908 /*
909 * Sanity checks.
910 */
911
912 /* Surface must be marked as a scanout. */
913 if (unlikely(!surface->scanout))
914 return -EINVAL;
915
916 if (unlikely(surface->mip_levels[0] != 1 ||
917 surface->num_sizes != 1 ||
918 surface->base_size.width < mode_cmd->width ||
919 surface->base_size.height < mode_cmd->height ||
920 surface->base_size.depth != 1)) {
921 DRM_ERROR("Incompatible surface dimensions "
922 "for requested mode.\n");
923 return -EINVAL;
924 }
925
926 switch (mode_cmd->pixel_format) {
927 case DRM_FORMAT_ARGB8888:
928 format = SVGA3D_A8R8G8B8;
929 break;
930 case DRM_FORMAT_XRGB8888:
931 format = SVGA3D_X8R8G8B8;
932 break;
933 case DRM_FORMAT_RGB565:
934 format = SVGA3D_R5G6B5;
935 break;
936 case DRM_FORMAT_XRGB1555:
937 format = SVGA3D_A1R5G5B5;
938 break;
939 default:
940 DRM_ERROR("Invalid pixel format: %s\n",
941 drm_get_format_name(mode_cmd->pixel_format, &format_name));
942 return -EINVAL;
943 }
944
945 /*
946 * For DX, surface format validation is done when surface->scanout
947 * is set.
948 */
949 if (!dev_priv->has_dx && format != surface->format) {
950 DRM_ERROR("Invalid surface format for requested mode.\n");
951 return -EINVAL;
952 }
953
954 vfbs = kzalloc(sizeof(*vfbs), GFP_KERNEL);
955 if (!vfbs) {
956 ret = -ENOMEM;
957 goto out_err1;
958 }
959
960 drm_helper_mode_fill_fb_struct(dev, &vfbs->base.base, mode_cmd);
961 vfbs->surface = vmw_surface_reference(surface);
962 vfbs->base.user_handle = mode_cmd->handles[0];
963 vfbs->is_bo_proxy = is_bo_proxy;
964
965 *out = &vfbs->base;
966
967 ret = drm_framebuffer_init(dev, &vfbs->base.base,
968 &vmw_framebuffer_surface_funcs);
969 if (ret)
970 goto out_err2;
971
972 return 0;
973
974 out_err2:
975 vmw_surface_unreference(&surface);
976 kfree(vfbs);
977 out_err1:
978 return ret;
979 }
980
981 /*
982 * Buffer-object framebuffer code
983 */
984
vmw_framebuffer_bo_destroy(struct drm_framebuffer * framebuffer)985 static void vmw_framebuffer_bo_destroy(struct drm_framebuffer *framebuffer)
986 {
987 struct vmw_framebuffer_bo *vfbd =
988 vmw_framebuffer_to_vfbd(framebuffer);
989
990 drm_framebuffer_cleanup(framebuffer);
991 vmw_bo_unreference(&vfbd->buffer);
992 if (vfbd->base.user_obj)
993 ttm_base_object_unref(&vfbd->base.user_obj);
994
995 kfree(vfbd);
996 }
997
vmw_framebuffer_bo_dirty(struct drm_framebuffer * framebuffer,struct drm_file * file_priv,unsigned int flags,unsigned int color,struct drm_clip_rect * clips,unsigned int num_clips)998 static int vmw_framebuffer_bo_dirty(struct drm_framebuffer *framebuffer,
999 struct drm_file *file_priv,
1000 unsigned int flags, unsigned int color,
1001 struct drm_clip_rect *clips,
1002 unsigned int num_clips)
1003 {
1004 struct vmw_private *dev_priv = vmw_priv(framebuffer->dev);
1005 struct vmw_framebuffer_bo *vfbd =
1006 vmw_framebuffer_to_vfbd(framebuffer);
1007 struct drm_clip_rect norect;
1008 int ret, increment = 1;
1009
1010 drm_modeset_lock_all(dev_priv->dev);
1011
1012 ret = ttm_read_lock(&dev_priv->reservation_sem, true);
1013 if (unlikely(ret != 0)) {
1014 drm_modeset_unlock_all(dev_priv->dev);
1015 return ret;
1016 }
1017
1018 if (!num_clips) {
1019 num_clips = 1;
1020 clips = &norect;
1021 norect.x1 = norect.y1 = 0;
1022 norect.x2 = framebuffer->width;
1023 norect.y2 = framebuffer->height;
1024 } else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
1025 num_clips /= 2;
1026 increment = 2;
1027 }
1028
1029 switch (dev_priv->active_display_unit) {
1030 case vmw_du_legacy:
1031 ret = vmw_kms_ldu_do_bo_dirty(dev_priv, &vfbd->base, 0, 0,
1032 clips, num_clips, increment);
1033 break;
1034 default:
1035 ret = -EINVAL;
1036 WARN_ONCE(true, "Dirty called with invalid display system.\n");
1037 break;
1038 }
1039
1040 vmw_fifo_flush(dev_priv, false);
1041 ttm_read_unlock(&dev_priv->reservation_sem);
1042
1043 drm_modeset_unlock_all(dev_priv->dev);
1044
1045 return ret;
1046 }
1047
vmw_framebuffer_bo_dirty_ext(struct drm_framebuffer * framebuffer,struct drm_file * file_priv,unsigned int flags,unsigned int color,struct drm_clip_rect * clips,unsigned int num_clips)1048 static int vmw_framebuffer_bo_dirty_ext(struct drm_framebuffer *framebuffer,
1049 struct drm_file *file_priv,
1050 unsigned int flags, unsigned int color,
1051 struct drm_clip_rect *clips,
1052 unsigned int num_clips)
1053 {
1054 struct vmw_private *dev_priv = vmw_priv(framebuffer->dev);
1055
1056 if (dev_priv->active_display_unit == vmw_du_legacy)
1057 return vmw_framebuffer_bo_dirty(framebuffer, file_priv, flags,
1058 color, clips, num_clips);
1059
1060 return drm_atomic_helper_dirtyfb(framebuffer, file_priv, flags, color,
1061 clips, num_clips);
1062 }
1063
1064 static const struct drm_framebuffer_funcs vmw_framebuffer_bo_funcs = {
1065 .destroy = vmw_framebuffer_bo_destroy,
1066 .dirty = vmw_framebuffer_bo_dirty_ext,
1067 };
1068
1069 /**
1070 * Pin the bofer in a location suitable for access by the
1071 * display system.
1072 */
vmw_framebuffer_pin(struct vmw_framebuffer * vfb)1073 static int vmw_framebuffer_pin(struct vmw_framebuffer *vfb)
1074 {
1075 struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
1076 struct vmw_buffer_object *buf;
1077 struct ttm_placement *placement;
1078 int ret;
1079
1080 buf = vfb->bo ? vmw_framebuffer_to_vfbd(&vfb->base)->buffer :
1081 vmw_framebuffer_to_vfbs(&vfb->base)->surface->res.backup;
1082
1083 if (!buf)
1084 return 0;
1085
1086 switch (dev_priv->active_display_unit) {
1087 case vmw_du_legacy:
1088 vmw_overlay_pause_all(dev_priv);
1089 ret = vmw_bo_pin_in_start_of_vram(dev_priv, buf, false);
1090 vmw_overlay_resume_all(dev_priv);
1091 break;
1092 case vmw_du_screen_object:
1093 case vmw_du_screen_target:
1094 if (vfb->bo) {
1095 if (dev_priv->capabilities & SVGA_CAP_3D) {
1096 /*
1097 * Use surface DMA to get content to
1098 * sreen target surface.
1099 */
1100 placement = &vmw_vram_gmr_placement;
1101 } else {
1102 /* Use CPU blit. */
1103 placement = &vmw_sys_placement;
1104 }
1105 } else {
1106 /* Use surface / image update */
1107 placement = &vmw_mob_placement;
1108 }
1109
1110 return vmw_bo_pin_in_placement(dev_priv, buf, placement, false);
1111 default:
1112 return -EINVAL;
1113 }
1114
1115 return ret;
1116 }
1117
vmw_framebuffer_unpin(struct vmw_framebuffer * vfb)1118 static int vmw_framebuffer_unpin(struct vmw_framebuffer *vfb)
1119 {
1120 struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
1121 struct vmw_buffer_object *buf;
1122
1123 buf = vfb->bo ? vmw_framebuffer_to_vfbd(&vfb->base)->buffer :
1124 vmw_framebuffer_to_vfbs(&vfb->base)->surface->res.backup;
1125
1126 if (WARN_ON(!buf))
1127 return 0;
1128
1129 return vmw_bo_unpin(dev_priv, buf, false);
1130 }
1131
1132 /**
1133 * vmw_create_bo_proxy - create a proxy surface for the buffer object
1134 *
1135 * @dev: DRM device
1136 * @mode_cmd: parameters for the new surface
1137 * @bo_mob: MOB backing the buffer object
1138 * @srf_out: newly created surface
1139 *
1140 * When the content FB is a buffer object, we create a surface as a proxy to the
1141 * same buffer. This way we can do a surface copy rather than a surface DMA.
1142 * This is a more efficient approach
1143 *
1144 * RETURNS:
1145 * 0 on success, error code otherwise
1146 */
vmw_create_bo_proxy(struct drm_device * dev,const struct drm_mode_fb_cmd2 * mode_cmd,struct vmw_buffer_object * bo_mob,struct vmw_surface ** srf_out)1147 static int vmw_create_bo_proxy(struct drm_device *dev,
1148 const struct drm_mode_fb_cmd2 *mode_cmd,
1149 struct vmw_buffer_object *bo_mob,
1150 struct vmw_surface **srf_out)
1151 {
1152 uint32_t format;
1153 struct drm_vmw_size content_base_size = {0};
1154 struct vmw_resource *res;
1155 unsigned int bytes_pp;
1156 struct drm_format_name_buf format_name;
1157 int ret;
1158
1159 switch (mode_cmd->pixel_format) {
1160 case DRM_FORMAT_ARGB8888:
1161 case DRM_FORMAT_XRGB8888:
1162 format = SVGA3D_X8R8G8B8;
1163 bytes_pp = 4;
1164 break;
1165
1166 case DRM_FORMAT_RGB565:
1167 case DRM_FORMAT_XRGB1555:
1168 format = SVGA3D_R5G6B5;
1169 bytes_pp = 2;
1170 break;
1171
1172 case 8:
1173 format = SVGA3D_P8;
1174 bytes_pp = 1;
1175 break;
1176
1177 default:
1178 DRM_ERROR("Invalid framebuffer format %s\n",
1179 drm_get_format_name(mode_cmd->pixel_format, &format_name));
1180 return -EINVAL;
1181 }
1182
1183 content_base_size.width = mode_cmd->pitches[0] / bytes_pp;
1184 content_base_size.height = mode_cmd->height;
1185 content_base_size.depth = 1;
1186
1187 ret = vmw_surface_gb_priv_define(dev,
1188 0, /* kernel visible only */
1189 0, /* flags */
1190 format,
1191 true, /* can be a scanout buffer */
1192 1, /* num of mip levels */
1193 0,
1194 0,
1195 content_base_size,
1196 SVGA3D_MS_PATTERN_NONE,
1197 SVGA3D_MS_QUALITY_NONE,
1198 srf_out);
1199 if (ret) {
1200 DRM_ERROR("Failed to allocate proxy content buffer\n");
1201 return ret;
1202 }
1203
1204 res = &(*srf_out)->res;
1205
1206 /* Reserve and switch the backing mob. */
1207 mutex_lock(&res->dev_priv->cmdbuf_mutex);
1208 (void) vmw_resource_reserve(res, false, true);
1209 vmw_bo_unreference(&res->backup);
1210 res->backup = vmw_bo_reference(bo_mob);
1211 res->backup_offset = 0;
1212 vmw_resource_unreserve(res, false, false, false, NULL, 0);
1213 mutex_unlock(&res->dev_priv->cmdbuf_mutex);
1214
1215 return 0;
1216 }
1217
1218
1219
vmw_kms_new_framebuffer_bo(struct vmw_private * dev_priv,struct vmw_buffer_object * bo,struct vmw_framebuffer ** out,const struct drm_mode_fb_cmd2 * mode_cmd)1220 static int vmw_kms_new_framebuffer_bo(struct vmw_private *dev_priv,
1221 struct vmw_buffer_object *bo,
1222 struct vmw_framebuffer **out,
1223 const struct drm_mode_fb_cmd2
1224 *mode_cmd)
1225
1226 {
1227 struct drm_device *dev = dev_priv->dev;
1228 struct vmw_framebuffer_bo *vfbd;
1229 unsigned int requested_size;
1230 struct drm_format_name_buf format_name;
1231 int ret;
1232
1233 requested_size = mode_cmd->height * mode_cmd->pitches[0];
1234 if (unlikely(requested_size > bo->base.num_pages * PAGE_SIZE)) {
1235 DRM_ERROR("Screen buffer object size is too small "
1236 "for requested mode.\n");
1237 return -EINVAL;
1238 }
1239
1240 /* Limited framebuffer color depth support for screen objects */
1241 if (dev_priv->active_display_unit == vmw_du_screen_object) {
1242 switch (mode_cmd->pixel_format) {
1243 case DRM_FORMAT_XRGB8888:
1244 case DRM_FORMAT_ARGB8888:
1245 break;
1246 case DRM_FORMAT_XRGB1555:
1247 case DRM_FORMAT_RGB565:
1248 break;
1249 default:
1250 DRM_ERROR("Invalid pixel format: %s\n",
1251 drm_get_format_name(mode_cmd->pixel_format, &format_name));
1252 return -EINVAL;
1253 }
1254 }
1255
1256 vfbd = kzalloc(sizeof(*vfbd), GFP_KERNEL);
1257 if (!vfbd) {
1258 ret = -ENOMEM;
1259 goto out_err1;
1260 }
1261
1262 drm_helper_mode_fill_fb_struct(dev, &vfbd->base.base, mode_cmd);
1263 vfbd->base.bo = true;
1264 vfbd->buffer = vmw_bo_reference(bo);
1265 vfbd->base.user_handle = mode_cmd->handles[0];
1266 *out = &vfbd->base;
1267
1268 ret = drm_framebuffer_init(dev, &vfbd->base.base,
1269 &vmw_framebuffer_bo_funcs);
1270 if (ret)
1271 goto out_err2;
1272
1273 return 0;
1274
1275 out_err2:
1276 vmw_bo_unreference(&bo);
1277 kfree(vfbd);
1278 out_err1:
1279 return ret;
1280 }
1281
1282
1283 /**
1284 * vmw_kms_srf_ok - check if a surface can be created
1285 *
1286 * @width: requested width
1287 * @height: requested height
1288 *
1289 * Surfaces need to be less than texture size
1290 */
1291 static bool
vmw_kms_srf_ok(struct vmw_private * dev_priv,uint32_t width,uint32_t height)1292 vmw_kms_srf_ok(struct vmw_private *dev_priv, uint32_t width, uint32_t height)
1293 {
1294 if (width > dev_priv->texture_max_width ||
1295 height > dev_priv->texture_max_height)
1296 return false;
1297
1298 return true;
1299 }
1300
1301 /**
1302 * vmw_kms_new_framebuffer - Create a new framebuffer.
1303 *
1304 * @dev_priv: Pointer to device private struct.
1305 * @bo: Pointer to buffer object to wrap the kms framebuffer around.
1306 * Either @bo or @surface must be NULL.
1307 * @surface: Pointer to a surface to wrap the kms framebuffer around.
1308 * Either @bo or @surface must be NULL.
1309 * @only_2d: No presents will occur to this buffer object based framebuffer.
1310 * This helps the code to do some important optimizations.
1311 * @mode_cmd: Frame-buffer metadata.
1312 */
1313 struct vmw_framebuffer *
vmw_kms_new_framebuffer(struct vmw_private * dev_priv,struct vmw_buffer_object * bo,struct vmw_surface * surface,bool only_2d,const struct drm_mode_fb_cmd2 * mode_cmd)1314 vmw_kms_new_framebuffer(struct vmw_private *dev_priv,
1315 struct vmw_buffer_object *bo,
1316 struct vmw_surface *surface,
1317 bool only_2d,
1318 const struct drm_mode_fb_cmd2 *mode_cmd)
1319 {
1320 struct vmw_framebuffer *vfb = NULL;
1321 bool is_bo_proxy = false;
1322 int ret;
1323
1324 /*
1325 * We cannot use the SurfaceDMA command in an non-accelerated VM,
1326 * therefore, wrap the buffer object in a surface so we can use the
1327 * SurfaceCopy command.
1328 */
1329 if (vmw_kms_srf_ok(dev_priv, mode_cmd->width, mode_cmd->height) &&
1330 bo && only_2d &&
1331 mode_cmd->width > 64 && /* Don't create a proxy for cursor */
1332 dev_priv->active_display_unit == vmw_du_screen_target) {
1333 ret = vmw_create_bo_proxy(dev_priv->dev, mode_cmd,
1334 bo, &surface);
1335 if (ret)
1336 return ERR_PTR(ret);
1337
1338 is_bo_proxy = true;
1339 }
1340
1341 /* Create the new framebuffer depending one what we have */
1342 if (surface) {
1343 ret = vmw_kms_new_framebuffer_surface(dev_priv, surface, &vfb,
1344 mode_cmd,
1345 is_bo_proxy);
1346
1347 /*
1348 * vmw_create_bo_proxy() adds a reference that is no longer
1349 * needed
1350 */
1351 if (is_bo_proxy)
1352 vmw_surface_unreference(&surface);
1353 } else if (bo) {
1354 ret = vmw_kms_new_framebuffer_bo(dev_priv, bo, &vfb,
1355 mode_cmd);
1356 } else {
1357 BUG();
1358 }
1359
1360 if (ret)
1361 return ERR_PTR(ret);
1362
1363 vfb->pin = vmw_framebuffer_pin;
1364 vfb->unpin = vmw_framebuffer_unpin;
1365
1366 return vfb;
1367 }
1368
1369 /*
1370 * Generic Kernel modesetting functions
1371 */
1372
vmw_kms_fb_create(struct drm_device * dev,struct drm_file * file_priv,const struct drm_mode_fb_cmd2 * mode_cmd)1373 static struct drm_framebuffer *vmw_kms_fb_create(struct drm_device *dev,
1374 struct drm_file *file_priv,
1375 const struct drm_mode_fb_cmd2 *mode_cmd)
1376 {
1377 struct vmw_private *dev_priv = vmw_priv(dev);
1378 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
1379 struct vmw_framebuffer *vfb = NULL;
1380 struct vmw_surface *surface = NULL;
1381 struct vmw_buffer_object *bo = NULL;
1382 struct ttm_base_object *user_obj;
1383 int ret;
1384
1385 /*
1386 * Take a reference on the user object of the resource
1387 * backing the kms fb. This ensures that user-space handle
1388 * lookups on that resource will always work as long as
1389 * it's registered with a kms framebuffer. This is important,
1390 * since vmw_execbuf_process identifies resources in the
1391 * command stream using user-space handles.
1392 */
1393
1394 user_obj = ttm_base_object_lookup(tfile, mode_cmd->handles[0]);
1395 if (unlikely(user_obj == NULL)) {
1396 DRM_ERROR("Could not locate requested kms frame buffer.\n");
1397 return ERR_PTR(-ENOENT);
1398 }
1399
1400 /**
1401 * End conditioned code.
1402 */
1403
1404 /* returns either a bo or surface */
1405 ret = vmw_user_lookup_handle(dev_priv, tfile,
1406 mode_cmd->handles[0],
1407 &surface, &bo);
1408 if (ret)
1409 goto err_out;
1410
1411
1412 if (!bo &&
1413 !vmw_kms_srf_ok(dev_priv, mode_cmd->width, mode_cmd->height)) {
1414 DRM_ERROR("Surface size cannot exceed %dx%d",
1415 dev_priv->texture_max_width,
1416 dev_priv->texture_max_height);
1417 goto err_out;
1418 }
1419
1420
1421 vfb = vmw_kms_new_framebuffer(dev_priv, bo, surface,
1422 !(dev_priv->capabilities & SVGA_CAP_3D),
1423 mode_cmd);
1424 if (IS_ERR(vfb)) {
1425 ret = PTR_ERR(vfb);
1426 goto err_out;
1427 }
1428
1429 err_out:
1430 /* vmw_user_lookup_handle takes one ref so does new_fb */
1431 if (bo)
1432 vmw_bo_unreference(&bo);
1433 if (surface)
1434 vmw_surface_unreference(&surface);
1435
1436 if (ret) {
1437 DRM_ERROR("failed to create vmw_framebuffer: %i\n", ret);
1438 ttm_base_object_unref(&user_obj);
1439 return ERR_PTR(ret);
1440 } else
1441 vfb->user_obj = user_obj;
1442
1443 return &vfb->base;
1444 }
1445
1446 /**
1447 * vmw_kms_check_display_memory - Validates display memory required for a
1448 * topology
1449 * @dev: DRM device
1450 * @num_rects: number of drm_rect in rects
1451 * @rects: array of drm_rect representing the topology to validate indexed by
1452 * crtc index.
1453 *
1454 * Returns:
1455 * 0 on success otherwise negative error code
1456 */
vmw_kms_check_display_memory(struct drm_device * dev,uint32_t num_rects,struct drm_rect * rects)1457 static int vmw_kms_check_display_memory(struct drm_device *dev,
1458 uint32_t num_rects,
1459 struct drm_rect *rects)
1460 {
1461 struct vmw_private *dev_priv = vmw_priv(dev);
1462 struct drm_rect bounding_box = {0};
1463 u64 total_pixels = 0, pixel_mem, bb_mem;
1464 int i;
1465
1466 for (i = 0; i < num_rects; i++) {
1467 /*
1468 * For STDU only individual screen (screen target) is limited by
1469 * SCREENTARGET_MAX_WIDTH/HEIGHT registers.
1470 */
1471 if (dev_priv->active_display_unit == vmw_du_screen_target &&
1472 (drm_rect_width(&rects[i]) > dev_priv->stdu_max_width ||
1473 drm_rect_height(&rects[i]) > dev_priv->stdu_max_height)) {
1474 VMW_DEBUG_KMS("Screen size not supported.\n");
1475 return -EINVAL;
1476 }
1477
1478 /* Bounding box upper left is at (0,0). */
1479 if (rects[i].x2 > bounding_box.x2)
1480 bounding_box.x2 = rects[i].x2;
1481
1482 if (rects[i].y2 > bounding_box.y2)
1483 bounding_box.y2 = rects[i].y2;
1484
1485 total_pixels += (u64) drm_rect_width(&rects[i]) *
1486 (u64) drm_rect_height(&rects[i]);
1487 }
1488
1489 /* Virtual svga device primary limits are always in 32-bpp. */
1490 pixel_mem = total_pixels * 4;
1491
1492 /*
1493 * For HV10 and below prim_bb_mem is vram size. When
1494 * SVGA_REG_MAX_PRIMARY_BOUNDING_BOX_MEM is not present vram size is
1495 * limit on primary bounding box
1496 */
1497 if (pixel_mem > dev_priv->prim_bb_mem) {
1498 VMW_DEBUG_KMS("Combined output size too large.\n");
1499 return -EINVAL;
1500 }
1501
1502 /* SVGA_CAP_NO_BB_RESTRICTION is available for STDU only. */
1503 if (dev_priv->active_display_unit != vmw_du_screen_target ||
1504 !(dev_priv->capabilities & SVGA_CAP_NO_BB_RESTRICTION)) {
1505 bb_mem = (u64) bounding_box.x2 * bounding_box.y2 * 4;
1506
1507 if (bb_mem > dev_priv->prim_bb_mem) {
1508 VMW_DEBUG_KMS("Topology is beyond supported limits.\n");
1509 return -EINVAL;
1510 }
1511 }
1512
1513 return 0;
1514 }
1515
1516 /**
1517 * vmw_crtc_state_and_lock - Return new or current crtc state with locked
1518 * crtc mutex
1519 * @state: The atomic state pointer containing the new atomic state
1520 * @crtc: The crtc
1521 *
1522 * This function returns the new crtc state if it's part of the state update.
1523 * Otherwise returns the current crtc state. It also makes sure that the
1524 * crtc mutex is locked.
1525 *
1526 * Returns: A valid crtc state pointer or NULL. It may also return a
1527 * pointer error, in particular -EDEADLK if locking needs to be rerun.
1528 */
1529 static struct drm_crtc_state *
vmw_crtc_state_and_lock(struct drm_atomic_state * state,struct drm_crtc * crtc)1530 vmw_crtc_state_and_lock(struct drm_atomic_state *state, struct drm_crtc *crtc)
1531 {
1532 struct drm_crtc_state *crtc_state;
1533
1534 crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
1535 if (crtc_state) {
1536 lockdep_assert_held(&crtc->mutex.mutex.base);
1537 } else {
1538 int ret = drm_modeset_lock(&crtc->mutex, state->acquire_ctx);
1539
1540 if (ret != 0 && ret != -EALREADY)
1541 return ERR_PTR(ret);
1542
1543 crtc_state = crtc->state;
1544 }
1545
1546 return crtc_state;
1547 }
1548
1549 /**
1550 * vmw_kms_check_implicit - Verify that all implicit display units scan out
1551 * from the same fb after the new state is committed.
1552 * @dev: The drm_device.
1553 * @state: The new state to be checked.
1554 *
1555 * Returns:
1556 * Zero on success,
1557 * -EINVAL on invalid state,
1558 * -EDEADLK if modeset locking needs to be rerun.
1559 */
vmw_kms_check_implicit(struct drm_device * dev,struct drm_atomic_state * state)1560 static int vmw_kms_check_implicit(struct drm_device *dev,
1561 struct drm_atomic_state *state)
1562 {
1563 struct drm_framebuffer *implicit_fb = NULL;
1564 struct drm_crtc *crtc;
1565 struct drm_crtc_state *crtc_state;
1566 struct drm_plane_state *plane_state;
1567
1568 drm_for_each_crtc(crtc, dev) {
1569 struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
1570
1571 if (!du->is_implicit)
1572 continue;
1573
1574 crtc_state = vmw_crtc_state_and_lock(state, crtc);
1575 if (IS_ERR(crtc_state))
1576 return PTR_ERR(crtc_state);
1577
1578 if (!crtc_state || !crtc_state->enable)
1579 continue;
1580
1581 /*
1582 * Can't move primary planes across crtcs, so this is OK.
1583 * It also means we don't need to take the plane mutex.
1584 */
1585 plane_state = du->primary.state;
1586 if (plane_state->crtc != crtc)
1587 continue;
1588
1589 if (!implicit_fb)
1590 implicit_fb = plane_state->fb;
1591 else if (implicit_fb != plane_state->fb)
1592 return -EINVAL;
1593 }
1594
1595 return 0;
1596 }
1597
1598 /**
1599 * vmw_kms_check_topology - Validates topology in drm_atomic_state
1600 * @dev: DRM device
1601 * @state: the driver state object
1602 *
1603 * Returns:
1604 * 0 on success otherwise negative error code
1605 */
vmw_kms_check_topology(struct drm_device * dev,struct drm_atomic_state * state)1606 static int vmw_kms_check_topology(struct drm_device *dev,
1607 struct drm_atomic_state *state)
1608 {
1609 struct drm_crtc_state *old_crtc_state, *new_crtc_state;
1610 struct drm_rect *rects;
1611 struct drm_crtc *crtc;
1612 uint32_t i;
1613 int ret = 0;
1614
1615 rects = kcalloc(dev->mode_config.num_crtc, sizeof(struct drm_rect),
1616 GFP_KERNEL);
1617 if (!rects)
1618 return -ENOMEM;
1619
1620 drm_for_each_crtc(crtc, dev) {
1621 struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
1622 struct drm_crtc_state *crtc_state;
1623
1624 i = drm_crtc_index(crtc);
1625
1626 crtc_state = vmw_crtc_state_and_lock(state, crtc);
1627 if (IS_ERR(crtc_state)) {
1628 ret = PTR_ERR(crtc_state);
1629 goto clean;
1630 }
1631
1632 if (!crtc_state)
1633 continue;
1634
1635 if (crtc_state->enable) {
1636 rects[i].x1 = du->gui_x;
1637 rects[i].y1 = du->gui_y;
1638 rects[i].x2 = du->gui_x + crtc_state->mode.hdisplay;
1639 rects[i].y2 = du->gui_y + crtc_state->mode.vdisplay;
1640 } else {
1641 rects[i].x1 = 0;
1642 rects[i].y1 = 0;
1643 rects[i].x2 = 0;
1644 rects[i].y2 = 0;
1645 }
1646 }
1647
1648 /* Determine change to topology due to new atomic state */
1649 for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state,
1650 new_crtc_state, i) {
1651 struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
1652 struct drm_connector *connector;
1653 struct drm_connector_state *conn_state;
1654 struct vmw_connector_state *vmw_conn_state;
1655
1656 if (!du->pref_active && new_crtc_state->enable) {
1657 VMW_DEBUG_KMS("Enabling a disabled display unit\n");
1658 ret = -EINVAL;
1659 goto clean;
1660 }
1661
1662 /*
1663 * For vmwgfx each crtc has only one connector attached and it
1664 * is not changed so don't really need to check the
1665 * crtc->connector_mask and iterate over it.
1666 */
1667 connector = &du->connector;
1668 conn_state = drm_atomic_get_connector_state(state, connector);
1669 if (IS_ERR(conn_state)) {
1670 ret = PTR_ERR(conn_state);
1671 goto clean;
1672 }
1673
1674 vmw_conn_state = vmw_connector_state_to_vcs(conn_state);
1675 vmw_conn_state->gui_x = du->gui_x;
1676 vmw_conn_state->gui_y = du->gui_y;
1677 }
1678
1679 ret = vmw_kms_check_display_memory(dev, dev->mode_config.num_crtc,
1680 rects);
1681
1682 clean:
1683 kfree(rects);
1684 return ret;
1685 }
1686
1687 /**
1688 * vmw_kms_atomic_check_modeset- validate state object for modeset changes
1689 *
1690 * @dev: DRM device
1691 * @state: the driver state object
1692 *
1693 * This is a simple wrapper around drm_atomic_helper_check_modeset() for
1694 * us to assign a value to mode->crtc_clock so that
1695 * drm_calc_timestamping_constants() won't throw an error message
1696 *
1697 * Returns:
1698 * Zero for success or -errno
1699 */
1700 static int
vmw_kms_atomic_check_modeset(struct drm_device * dev,struct drm_atomic_state * state)1701 vmw_kms_atomic_check_modeset(struct drm_device *dev,
1702 struct drm_atomic_state *state)
1703 {
1704 struct drm_crtc *crtc;
1705 struct drm_crtc_state *crtc_state;
1706 bool need_modeset = false;
1707 int i, ret;
1708
1709 ret = drm_atomic_helper_check(dev, state);
1710 if (ret)
1711 return ret;
1712
1713 ret = vmw_kms_check_implicit(dev, state);
1714 if (ret) {
1715 VMW_DEBUG_KMS("Invalid implicit state\n");
1716 return ret;
1717 }
1718
1719 for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
1720 if (drm_atomic_crtc_needs_modeset(crtc_state))
1721 need_modeset = true;
1722 }
1723
1724 if (need_modeset)
1725 return vmw_kms_check_topology(dev, state);
1726
1727 return ret;
1728 }
1729
1730 static const struct drm_mode_config_funcs vmw_kms_funcs = {
1731 .fb_create = vmw_kms_fb_create,
1732 .atomic_check = vmw_kms_atomic_check_modeset,
1733 .atomic_commit = drm_atomic_helper_commit,
1734 };
1735
vmw_kms_generic_present(struct vmw_private * dev_priv,struct drm_file * file_priv,struct vmw_framebuffer * vfb,struct vmw_surface * surface,uint32_t sid,int32_t destX,int32_t destY,struct drm_vmw_rect * clips,uint32_t num_clips)1736 static int vmw_kms_generic_present(struct vmw_private *dev_priv,
1737 struct drm_file *file_priv,
1738 struct vmw_framebuffer *vfb,
1739 struct vmw_surface *surface,
1740 uint32_t sid,
1741 int32_t destX, int32_t destY,
1742 struct drm_vmw_rect *clips,
1743 uint32_t num_clips)
1744 {
1745 return vmw_kms_sou_do_surface_dirty(dev_priv, vfb, NULL, clips,
1746 &surface->res, destX, destY,
1747 num_clips, 1, NULL, NULL);
1748 }
1749
1750
vmw_kms_present(struct vmw_private * dev_priv,struct drm_file * file_priv,struct vmw_framebuffer * vfb,struct vmw_surface * surface,uint32_t sid,int32_t destX,int32_t destY,struct drm_vmw_rect * clips,uint32_t num_clips)1751 int vmw_kms_present(struct vmw_private *dev_priv,
1752 struct drm_file *file_priv,
1753 struct vmw_framebuffer *vfb,
1754 struct vmw_surface *surface,
1755 uint32_t sid,
1756 int32_t destX, int32_t destY,
1757 struct drm_vmw_rect *clips,
1758 uint32_t num_clips)
1759 {
1760 int ret;
1761
1762 switch (dev_priv->active_display_unit) {
1763 case vmw_du_screen_target:
1764 ret = vmw_kms_stdu_surface_dirty(dev_priv, vfb, NULL, clips,
1765 &surface->res, destX, destY,
1766 num_clips, 1, NULL, NULL);
1767 break;
1768 case vmw_du_screen_object:
1769 ret = vmw_kms_generic_present(dev_priv, file_priv, vfb, surface,
1770 sid, destX, destY, clips,
1771 num_clips);
1772 break;
1773 default:
1774 WARN_ONCE(true,
1775 "Present called with invalid display system.\n");
1776 ret = -ENOSYS;
1777 break;
1778 }
1779 if (ret)
1780 return ret;
1781
1782 vmw_fifo_flush(dev_priv, false);
1783
1784 return 0;
1785 }
1786
1787 static void
vmw_kms_create_hotplug_mode_update_property(struct vmw_private * dev_priv)1788 vmw_kms_create_hotplug_mode_update_property(struct vmw_private *dev_priv)
1789 {
1790 if (dev_priv->hotplug_mode_update_property)
1791 return;
1792
1793 dev_priv->hotplug_mode_update_property =
1794 drm_property_create_range(dev_priv->dev,
1795 DRM_MODE_PROP_IMMUTABLE,
1796 "hotplug_mode_update", 0, 1);
1797
1798 if (!dev_priv->hotplug_mode_update_property)
1799 return;
1800
1801 }
1802
vmw_kms_init(struct vmw_private * dev_priv)1803 int vmw_kms_init(struct vmw_private *dev_priv)
1804 {
1805 struct drm_device *dev = dev_priv->dev;
1806 int ret;
1807
1808 drm_mode_config_init(dev);
1809 dev->mode_config.funcs = &vmw_kms_funcs;
1810 dev->mode_config.min_width = 1;
1811 dev->mode_config.min_height = 1;
1812 dev->mode_config.max_width = dev_priv->texture_max_width;
1813 dev->mode_config.max_height = dev_priv->texture_max_height;
1814
1815 drm_mode_create_suggested_offset_properties(dev);
1816 vmw_kms_create_hotplug_mode_update_property(dev_priv);
1817
1818 ret = vmw_kms_stdu_init_display(dev_priv);
1819 if (ret) {
1820 ret = vmw_kms_sou_init_display(dev_priv);
1821 if (ret) /* Fallback */
1822 ret = vmw_kms_ldu_init_display(dev_priv);
1823 }
1824
1825 return ret;
1826 }
1827
vmw_kms_close(struct vmw_private * dev_priv)1828 int vmw_kms_close(struct vmw_private *dev_priv)
1829 {
1830 int ret = 0;
1831
1832 /*
1833 * Docs says we should take the lock before calling this function
1834 * but since it destroys encoders and our destructor calls
1835 * drm_encoder_cleanup which takes the lock we deadlock.
1836 */
1837 drm_mode_config_cleanup(dev_priv->dev);
1838 if (dev_priv->active_display_unit == vmw_du_legacy)
1839 ret = vmw_kms_ldu_close_display(dev_priv);
1840
1841 return ret;
1842 }
1843
vmw_kms_cursor_bypass_ioctl(struct drm_device * dev,void * data,struct drm_file * file_priv)1844 int vmw_kms_cursor_bypass_ioctl(struct drm_device *dev, void *data,
1845 struct drm_file *file_priv)
1846 {
1847 struct drm_vmw_cursor_bypass_arg *arg = data;
1848 struct vmw_display_unit *du;
1849 struct drm_crtc *crtc;
1850 int ret = 0;
1851
1852
1853 mutex_lock(&dev->mode_config.mutex);
1854 if (arg->flags & DRM_VMW_CURSOR_BYPASS_ALL) {
1855
1856 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
1857 du = vmw_crtc_to_du(crtc);
1858 du->hotspot_x = arg->xhot;
1859 du->hotspot_y = arg->yhot;
1860 }
1861
1862 mutex_unlock(&dev->mode_config.mutex);
1863 return 0;
1864 }
1865
1866 crtc = drm_crtc_find(dev, file_priv, arg->crtc_id);
1867 if (!crtc) {
1868 ret = -ENOENT;
1869 goto out;
1870 }
1871
1872 du = vmw_crtc_to_du(crtc);
1873
1874 du->hotspot_x = arg->xhot;
1875 du->hotspot_y = arg->yhot;
1876
1877 out:
1878 mutex_unlock(&dev->mode_config.mutex);
1879
1880 return ret;
1881 }
1882
vmw_kms_write_svga(struct vmw_private * vmw_priv,unsigned width,unsigned height,unsigned pitch,unsigned bpp,unsigned depth)1883 int vmw_kms_write_svga(struct vmw_private *vmw_priv,
1884 unsigned width, unsigned height, unsigned pitch,
1885 unsigned bpp, unsigned depth)
1886 {
1887 if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1888 vmw_write(vmw_priv, SVGA_REG_PITCHLOCK, pitch);
1889 else if (vmw_fifo_have_pitchlock(vmw_priv))
1890 vmw_mmio_write(pitch, vmw_priv->mmio_virt +
1891 SVGA_FIFO_PITCHLOCK);
1892 vmw_write(vmw_priv, SVGA_REG_WIDTH, width);
1893 vmw_write(vmw_priv, SVGA_REG_HEIGHT, height);
1894 vmw_write(vmw_priv, SVGA_REG_BITS_PER_PIXEL, bpp);
1895
1896 if (vmw_read(vmw_priv, SVGA_REG_DEPTH) != depth) {
1897 DRM_ERROR("Invalid depth %u for %u bpp, host expects %u\n",
1898 depth, bpp, vmw_read(vmw_priv, SVGA_REG_DEPTH));
1899 return -EINVAL;
1900 }
1901
1902 return 0;
1903 }
1904
vmw_kms_save_vga(struct vmw_private * vmw_priv)1905 int vmw_kms_save_vga(struct vmw_private *vmw_priv)
1906 {
1907 struct vmw_vga_topology_state *save;
1908 uint32_t i;
1909
1910 vmw_priv->vga_width = vmw_read(vmw_priv, SVGA_REG_WIDTH);
1911 vmw_priv->vga_height = vmw_read(vmw_priv, SVGA_REG_HEIGHT);
1912 vmw_priv->vga_bpp = vmw_read(vmw_priv, SVGA_REG_BITS_PER_PIXEL);
1913 if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1914 vmw_priv->vga_pitchlock =
1915 vmw_read(vmw_priv, SVGA_REG_PITCHLOCK);
1916 else if (vmw_fifo_have_pitchlock(vmw_priv))
1917 vmw_priv->vga_pitchlock = vmw_mmio_read(vmw_priv->mmio_virt +
1918 SVGA_FIFO_PITCHLOCK);
1919
1920 if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY))
1921 return 0;
1922
1923 vmw_priv->num_displays = vmw_read(vmw_priv,
1924 SVGA_REG_NUM_GUEST_DISPLAYS);
1925
1926 if (vmw_priv->num_displays == 0)
1927 vmw_priv->num_displays = 1;
1928
1929 for (i = 0; i < vmw_priv->num_displays; ++i) {
1930 save = &vmw_priv->vga_save[i];
1931 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, i);
1932 save->primary = vmw_read(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY);
1933 save->pos_x = vmw_read(vmw_priv, SVGA_REG_DISPLAY_POSITION_X);
1934 save->pos_y = vmw_read(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y);
1935 save->width = vmw_read(vmw_priv, SVGA_REG_DISPLAY_WIDTH);
1936 save->height = vmw_read(vmw_priv, SVGA_REG_DISPLAY_HEIGHT);
1937 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
1938 if (i == 0 && vmw_priv->num_displays == 1 &&
1939 save->width == 0 && save->height == 0) {
1940
1941 /*
1942 * It should be fairly safe to assume that these
1943 * values are uninitialized.
1944 */
1945
1946 save->width = vmw_priv->vga_width - save->pos_x;
1947 save->height = vmw_priv->vga_height - save->pos_y;
1948 }
1949 }
1950
1951 return 0;
1952 }
1953
vmw_kms_restore_vga(struct vmw_private * vmw_priv)1954 int vmw_kms_restore_vga(struct vmw_private *vmw_priv)
1955 {
1956 struct vmw_vga_topology_state *save;
1957 uint32_t i;
1958
1959 vmw_write(vmw_priv, SVGA_REG_WIDTH, vmw_priv->vga_width);
1960 vmw_write(vmw_priv, SVGA_REG_HEIGHT, vmw_priv->vga_height);
1961 vmw_write(vmw_priv, SVGA_REG_BITS_PER_PIXEL, vmw_priv->vga_bpp);
1962 if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1963 vmw_write(vmw_priv, SVGA_REG_PITCHLOCK,
1964 vmw_priv->vga_pitchlock);
1965 else if (vmw_fifo_have_pitchlock(vmw_priv))
1966 vmw_mmio_write(vmw_priv->vga_pitchlock,
1967 vmw_priv->mmio_virt + SVGA_FIFO_PITCHLOCK);
1968
1969 if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY))
1970 return 0;
1971
1972 for (i = 0; i < vmw_priv->num_displays; ++i) {
1973 save = &vmw_priv->vga_save[i];
1974 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, i);
1975 vmw_write(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY, save->primary);
1976 vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_X, save->pos_x);
1977 vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y, save->pos_y);
1978 vmw_write(vmw_priv, SVGA_REG_DISPLAY_WIDTH, save->width);
1979 vmw_write(vmw_priv, SVGA_REG_DISPLAY_HEIGHT, save->height);
1980 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
1981 }
1982
1983 return 0;
1984 }
1985
vmw_kms_validate_mode_vram(struct vmw_private * dev_priv,uint32_t pitch,uint32_t height)1986 bool vmw_kms_validate_mode_vram(struct vmw_private *dev_priv,
1987 uint32_t pitch,
1988 uint32_t height)
1989 {
1990 return ((u64) pitch * (u64) height) < (u64)
1991 ((dev_priv->active_display_unit == vmw_du_screen_target) ?
1992 dev_priv->prim_bb_mem : dev_priv->vram_size);
1993 }
1994
1995
1996 /**
1997 * Function called by DRM code called with vbl_lock held.
1998 */
vmw_get_vblank_counter(struct drm_device * dev,unsigned int pipe)1999 u32 vmw_get_vblank_counter(struct drm_device *dev, unsigned int pipe)
2000 {
2001 return 0;
2002 }
2003
2004 /**
2005 * Function called by DRM code called with vbl_lock held.
2006 */
vmw_enable_vblank(struct drm_device * dev,unsigned int pipe)2007 int vmw_enable_vblank(struct drm_device *dev, unsigned int pipe)
2008 {
2009 return -EINVAL;
2010 }
2011
2012 /**
2013 * Function called by DRM code called with vbl_lock held.
2014 */
vmw_disable_vblank(struct drm_device * dev,unsigned int pipe)2015 void vmw_disable_vblank(struct drm_device *dev, unsigned int pipe)
2016 {
2017 }
2018
2019 /**
2020 * vmw_du_update_layout - Update the display unit with topology from resolution
2021 * plugin and generate DRM uevent
2022 * @dev_priv: device private
2023 * @num_rects: number of drm_rect in rects
2024 * @rects: toplogy to update
2025 */
vmw_du_update_layout(struct vmw_private * dev_priv,unsigned int num_rects,struct drm_rect * rects)2026 static int vmw_du_update_layout(struct vmw_private *dev_priv,
2027 unsigned int num_rects, struct drm_rect *rects)
2028 {
2029 struct drm_device *dev = dev_priv->dev;
2030 struct vmw_display_unit *du;
2031 struct drm_connector *con;
2032 struct drm_connector_list_iter conn_iter;
2033 struct drm_modeset_acquire_ctx ctx;
2034 struct drm_crtc *crtc;
2035 int ret;
2036
2037 /* Currently gui_x/y is protected with the crtc mutex */
2038 mutex_lock(&dev->mode_config.mutex);
2039 drm_modeset_acquire_init(&ctx, 0);
2040 retry:
2041 drm_for_each_crtc(crtc, dev) {
2042 ret = drm_modeset_lock(&crtc->mutex, &ctx);
2043 if (ret < 0) {
2044 if (ret == -EDEADLK) {
2045 drm_modeset_backoff(&ctx);
2046 goto retry;
2047 }
2048 goto out_fini;
2049 }
2050 }
2051
2052 drm_connector_list_iter_begin(dev, &conn_iter);
2053 drm_for_each_connector_iter(con, &conn_iter) {
2054 du = vmw_connector_to_du(con);
2055 if (num_rects > du->unit) {
2056 du->pref_width = drm_rect_width(&rects[du->unit]);
2057 du->pref_height = drm_rect_height(&rects[du->unit]);
2058 du->pref_active = true;
2059 du->gui_x = rects[du->unit].x1;
2060 du->gui_y = rects[du->unit].y1;
2061 } else {
2062 du->pref_width = 800;
2063 du->pref_height = 600;
2064 du->pref_active = false;
2065 du->gui_x = 0;
2066 du->gui_y = 0;
2067 }
2068 }
2069 drm_connector_list_iter_end(&conn_iter);
2070
2071 list_for_each_entry(con, &dev->mode_config.connector_list, head) {
2072 du = vmw_connector_to_du(con);
2073 if (num_rects > du->unit) {
2074 drm_object_property_set_value
2075 (&con->base, dev->mode_config.suggested_x_property,
2076 du->gui_x);
2077 drm_object_property_set_value
2078 (&con->base, dev->mode_config.suggested_y_property,
2079 du->gui_y);
2080 } else {
2081 drm_object_property_set_value
2082 (&con->base, dev->mode_config.suggested_x_property,
2083 0);
2084 drm_object_property_set_value
2085 (&con->base, dev->mode_config.suggested_y_property,
2086 0);
2087 }
2088 con->status = vmw_du_connector_detect(con, true);
2089 }
2090
2091 drm_sysfs_hotplug_event(dev);
2092 out_fini:
2093 drm_modeset_drop_locks(&ctx);
2094 drm_modeset_acquire_fini(&ctx);
2095 mutex_unlock(&dev->mode_config.mutex);
2096
2097 return 0;
2098 }
2099
vmw_du_crtc_gamma_set(struct drm_crtc * crtc,u16 * r,u16 * g,u16 * b,uint32_t size,struct drm_modeset_acquire_ctx * ctx)2100 int vmw_du_crtc_gamma_set(struct drm_crtc *crtc,
2101 u16 *r, u16 *g, u16 *b,
2102 uint32_t size,
2103 struct drm_modeset_acquire_ctx *ctx)
2104 {
2105 struct vmw_private *dev_priv = vmw_priv(crtc->dev);
2106 int i;
2107
2108 for (i = 0; i < size; i++) {
2109 DRM_DEBUG("%d r/g/b = 0x%04x / 0x%04x / 0x%04x\n", i,
2110 r[i], g[i], b[i]);
2111 vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 0, r[i] >> 8);
2112 vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 1, g[i] >> 8);
2113 vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 2, b[i] >> 8);
2114 }
2115
2116 return 0;
2117 }
2118
vmw_du_connector_dpms(struct drm_connector * connector,int mode)2119 int vmw_du_connector_dpms(struct drm_connector *connector, int mode)
2120 {
2121 return 0;
2122 }
2123
2124 enum drm_connector_status
vmw_du_connector_detect(struct drm_connector * connector,bool force)2125 vmw_du_connector_detect(struct drm_connector *connector, bool force)
2126 {
2127 uint32_t num_displays;
2128 struct drm_device *dev = connector->dev;
2129 struct vmw_private *dev_priv = vmw_priv(dev);
2130 struct vmw_display_unit *du = vmw_connector_to_du(connector);
2131
2132 num_displays = vmw_read(dev_priv, SVGA_REG_NUM_DISPLAYS);
2133
2134 return ((vmw_connector_to_du(connector)->unit < num_displays &&
2135 du->pref_active) ?
2136 connector_status_connected : connector_status_disconnected);
2137 }
2138
2139 static struct drm_display_mode vmw_kms_connector_builtin[] = {
2140 /* 640x480@60Hz */
2141 { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25175, 640, 656,
2142 752, 800, 0, 480, 489, 492, 525, 0,
2143 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
2144 /* 800x600@60Hz */
2145 { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 40000, 800, 840,
2146 968, 1056, 0, 600, 601, 605, 628, 0,
2147 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
2148 /* 1024x768@60Hz */
2149 { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 65000, 1024, 1048,
2150 1184, 1344, 0, 768, 771, 777, 806, 0,
2151 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
2152 /* 1152x864@75Hz */
2153 { DRM_MODE("1152x864", DRM_MODE_TYPE_DRIVER, 108000, 1152, 1216,
2154 1344, 1600, 0, 864, 865, 868, 900, 0,
2155 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
2156 /* 1280x768@60Hz */
2157 { DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 79500, 1280, 1344,
2158 1472, 1664, 0, 768, 771, 778, 798, 0,
2159 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
2160 /* 1280x800@60Hz */
2161 { DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 83500, 1280, 1352,
2162 1480, 1680, 0, 800, 803, 809, 831, 0,
2163 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
2164 /* 1280x960@60Hz */
2165 { DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1376,
2166 1488, 1800, 0, 960, 961, 964, 1000, 0,
2167 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
2168 /* 1280x1024@60Hz */
2169 { DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1328,
2170 1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
2171 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
2172 /* 1360x768@60Hz */
2173 { DRM_MODE("1360x768", DRM_MODE_TYPE_DRIVER, 85500, 1360, 1424,
2174 1536, 1792, 0, 768, 771, 777, 795, 0,
2175 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
2176 /* 1440x1050@60Hz */
2177 { DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 121750, 1400, 1488,
2178 1632, 1864, 0, 1050, 1053, 1057, 1089, 0,
2179 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
2180 /* 1440x900@60Hz */
2181 { DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 106500, 1440, 1520,
2182 1672, 1904, 0, 900, 903, 909, 934, 0,
2183 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
2184 /* 1600x1200@60Hz */
2185 { DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 162000, 1600, 1664,
2186 1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
2187 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
2188 /* 1680x1050@60Hz */
2189 { DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 146250, 1680, 1784,
2190 1960, 2240, 0, 1050, 1053, 1059, 1089, 0,
2191 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
2192 /* 1792x1344@60Hz */
2193 { DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 204750, 1792, 1920,
2194 2120, 2448, 0, 1344, 1345, 1348, 1394, 0,
2195 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
2196 /* 1853x1392@60Hz */
2197 { DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 218250, 1856, 1952,
2198 2176, 2528, 0, 1392, 1393, 1396, 1439, 0,
2199 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
2200 /* 1920x1200@60Hz */
2201 { DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 193250, 1920, 2056,
2202 2256, 2592, 0, 1200, 1203, 1209, 1245, 0,
2203 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
2204 /* 1920x1440@60Hz */
2205 { DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 234000, 1920, 2048,
2206 2256, 2600, 0, 1440, 1441, 1444, 1500, 0,
2207 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
2208 /* 2560x1600@60Hz */
2209 { DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 348500, 2560, 2752,
2210 3032, 3504, 0, 1600, 1603, 1609, 1658, 0,
2211 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
2212 /* Terminate */
2213 { DRM_MODE("", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) },
2214 };
2215
2216 /**
2217 * vmw_guess_mode_timing - Provide fake timings for a
2218 * 60Hz vrefresh mode.
2219 *
2220 * @mode - Pointer to a struct drm_display_mode with hdisplay and vdisplay
2221 * members filled in.
2222 */
vmw_guess_mode_timing(struct drm_display_mode * mode)2223 void vmw_guess_mode_timing(struct drm_display_mode *mode)
2224 {
2225 mode->hsync_start = mode->hdisplay + 50;
2226 mode->hsync_end = mode->hsync_start + 50;
2227 mode->htotal = mode->hsync_end + 50;
2228
2229 mode->vsync_start = mode->vdisplay + 50;
2230 mode->vsync_end = mode->vsync_start + 50;
2231 mode->vtotal = mode->vsync_end + 50;
2232
2233 mode->clock = (u32)mode->htotal * (u32)mode->vtotal / 100 * 6;
2234 mode->vrefresh = drm_mode_vrefresh(mode);
2235 }
2236
2237
vmw_du_connector_fill_modes(struct drm_connector * connector,uint32_t max_width,uint32_t max_height)2238 int vmw_du_connector_fill_modes(struct drm_connector *connector,
2239 uint32_t max_width, uint32_t max_height)
2240 {
2241 struct vmw_display_unit *du = vmw_connector_to_du(connector);
2242 struct drm_device *dev = connector->dev;
2243 struct vmw_private *dev_priv = vmw_priv(dev);
2244 struct drm_display_mode *mode = NULL;
2245 struct drm_display_mode *bmode;
2246 struct drm_display_mode prefmode = { DRM_MODE("preferred",
2247 DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
2248 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
2249 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC)
2250 };
2251 int i;
2252 u32 assumed_bpp = 4;
2253
2254 if (dev_priv->assume_16bpp)
2255 assumed_bpp = 2;
2256
2257 max_width = min(max_width, dev_priv->texture_max_width);
2258 max_height = min(max_height, dev_priv->texture_max_height);
2259
2260 /*
2261 * For STDU extra limit for a mode on SVGA_REG_SCREENTARGET_MAX_WIDTH/
2262 * HEIGHT registers.
2263 */
2264 if (dev_priv->active_display_unit == vmw_du_screen_target) {
2265 max_width = min(max_width, dev_priv->stdu_max_width);
2266 max_height = min(max_height, dev_priv->stdu_max_height);
2267 }
2268
2269 /* Add preferred mode */
2270 mode = drm_mode_duplicate(dev, &prefmode);
2271 if (!mode)
2272 return 0;
2273 mode->hdisplay = du->pref_width;
2274 mode->vdisplay = du->pref_height;
2275 vmw_guess_mode_timing(mode);
2276
2277 if (vmw_kms_validate_mode_vram(dev_priv,
2278 mode->hdisplay * assumed_bpp,
2279 mode->vdisplay)) {
2280 drm_mode_probed_add(connector, mode);
2281 } else {
2282 drm_mode_destroy(dev, mode);
2283 mode = NULL;
2284 }
2285
2286 if (du->pref_mode) {
2287 list_del_init(&du->pref_mode->head);
2288 drm_mode_destroy(dev, du->pref_mode);
2289 }
2290
2291 /* mode might be null here, this is intended */
2292 du->pref_mode = mode;
2293
2294 for (i = 0; vmw_kms_connector_builtin[i].type != 0; i++) {
2295 bmode = &vmw_kms_connector_builtin[i];
2296 if (bmode->hdisplay > max_width ||
2297 bmode->vdisplay > max_height)
2298 continue;
2299
2300 if (!vmw_kms_validate_mode_vram(dev_priv,
2301 bmode->hdisplay * assumed_bpp,
2302 bmode->vdisplay))
2303 continue;
2304
2305 mode = drm_mode_duplicate(dev, bmode);
2306 if (!mode)
2307 return 0;
2308 mode->vrefresh = drm_mode_vrefresh(mode);
2309
2310 drm_mode_probed_add(connector, mode);
2311 }
2312
2313 drm_connector_list_update(connector);
2314 /* Move the prefered mode first, help apps pick the right mode. */
2315 drm_mode_sort(&connector->modes);
2316
2317 return 1;
2318 }
2319
2320 /**
2321 * vmw_kms_update_layout_ioctl - Handler for DRM_VMW_UPDATE_LAYOUT ioctl
2322 * @dev: drm device for the ioctl
2323 * @data: data pointer for the ioctl
2324 * @file_priv: drm file for the ioctl call
2325 *
2326 * Update preferred topology of display unit as per ioctl request. The topology
2327 * is expressed as array of drm_vmw_rect.
2328 * e.g.
2329 * [0 0 640 480] [640 0 800 600] [0 480 640 480]
2330 *
2331 * NOTE:
2332 * The x and y offset (upper left) in drm_vmw_rect cannot be less than 0. Beside
2333 * device limit on topology, x + w and y + h (lower right) cannot be greater
2334 * than INT_MAX. So topology beyond these limits will return with error.
2335 *
2336 * Returns:
2337 * Zero on success, negative errno on failure.
2338 */
vmw_kms_update_layout_ioctl(struct drm_device * dev,void * data,struct drm_file * file_priv)2339 int vmw_kms_update_layout_ioctl(struct drm_device *dev, void *data,
2340 struct drm_file *file_priv)
2341 {
2342 struct vmw_private *dev_priv = vmw_priv(dev);
2343 struct drm_mode_config *mode_config = &dev->mode_config;
2344 struct drm_vmw_update_layout_arg *arg =
2345 (struct drm_vmw_update_layout_arg *)data;
2346 void __user *user_rects;
2347 struct drm_vmw_rect *rects;
2348 struct drm_rect *drm_rects;
2349 unsigned rects_size;
2350 int ret, i;
2351
2352 if (!arg->num_outputs) {
2353 struct drm_rect def_rect = {0, 0, 800, 600};
2354 VMW_DEBUG_KMS("Default layout x1 = %d y1 = %d x2 = %d y2 = %d\n",
2355 def_rect.x1, def_rect.y1,
2356 def_rect.x2, def_rect.y2);
2357 vmw_du_update_layout(dev_priv, 1, &def_rect);
2358 return 0;
2359 }
2360
2361 rects_size = arg->num_outputs * sizeof(struct drm_vmw_rect);
2362 rects = kcalloc(arg->num_outputs, sizeof(struct drm_vmw_rect),
2363 GFP_KERNEL);
2364 if (unlikely(!rects))
2365 return -ENOMEM;
2366
2367 user_rects = (void __user *)(unsigned long)arg->rects;
2368 ret = copy_from_user(rects, user_rects, rects_size);
2369 if (unlikely(ret != 0)) {
2370 DRM_ERROR("Failed to get rects.\n");
2371 ret = -EFAULT;
2372 goto out_free;
2373 }
2374
2375 drm_rects = (struct drm_rect *)rects;
2376
2377 VMW_DEBUG_KMS("Layout count = %u\n", arg->num_outputs);
2378 for (i = 0; i < arg->num_outputs; i++) {
2379 struct drm_vmw_rect curr_rect;
2380
2381 /* Verify user-space for overflow as kernel use drm_rect */
2382 if ((rects[i].x + rects[i].w > INT_MAX) ||
2383 (rects[i].y + rects[i].h > INT_MAX)) {
2384 ret = -ERANGE;
2385 goto out_free;
2386 }
2387
2388 curr_rect = rects[i];
2389 drm_rects[i].x1 = curr_rect.x;
2390 drm_rects[i].y1 = curr_rect.y;
2391 drm_rects[i].x2 = curr_rect.x + curr_rect.w;
2392 drm_rects[i].y2 = curr_rect.y + curr_rect.h;
2393
2394 VMW_DEBUG_KMS(" x1 = %d y1 = %d x2 = %d y2 = %d\n",
2395 drm_rects[i].x1, drm_rects[i].y1,
2396 drm_rects[i].x2, drm_rects[i].y2);
2397
2398 /*
2399 * Currently this check is limiting the topology within
2400 * mode_config->max (which actually is max texture size
2401 * supported by virtual device). This limit is here to address
2402 * window managers that create a big framebuffer for whole
2403 * topology.
2404 */
2405 if (drm_rects[i].x1 < 0 || drm_rects[i].y1 < 0 ||
2406 drm_rects[i].x2 > mode_config->max_width ||
2407 drm_rects[i].y2 > mode_config->max_height) {
2408 VMW_DEBUG_KMS("Invalid layout %d %d %d %d\n",
2409 drm_rects[i].x1, drm_rects[i].y1,
2410 drm_rects[i].x2, drm_rects[i].y2);
2411 ret = -EINVAL;
2412 goto out_free;
2413 }
2414 }
2415
2416 ret = vmw_kms_check_display_memory(dev, arg->num_outputs, drm_rects);
2417
2418 if (ret == 0)
2419 vmw_du_update_layout(dev_priv, arg->num_outputs, drm_rects);
2420
2421 out_free:
2422 kfree(rects);
2423 return ret;
2424 }
2425
2426 /**
2427 * vmw_kms_helper_dirty - Helper to build commands and perform actions based
2428 * on a set of cliprects and a set of display units.
2429 *
2430 * @dev_priv: Pointer to a device private structure.
2431 * @framebuffer: Pointer to the framebuffer on which to perform the actions.
2432 * @clips: A set of struct drm_clip_rect. Either this os @vclips must be NULL.
2433 * Cliprects are given in framebuffer coordinates.
2434 * @vclips: A set of struct drm_vmw_rect cliprects. Either this or @clips must
2435 * be NULL. Cliprects are given in source coordinates.
2436 * @dest_x: X coordinate offset for the crtc / destination clip rects.
2437 * @dest_y: Y coordinate offset for the crtc / destination clip rects.
2438 * @num_clips: Number of cliprects in the @clips or @vclips array.
2439 * @increment: Integer with which to increment the clip counter when looping.
2440 * Used to skip a predetermined number of clip rects.
2441 * @dirty: Closure structure. See the description of struct vmw_kms_dirty.
2442 */
vmw_kms_helper_dirty(struct vmw_private * dev_priv,struct vmw_framebuffer * framebuffer,const struct drm_clip_rect * clips,const struct drm_vmw_rect * vclips,s32 dest_x,s32 dest_y,int num_clips,int increment,struct vmw_kms_dirty * dirty)2443 int vmw_kms_helper_dirty(struct vmw_private *dev_priv,
2444 struct vmw_framebuffer *framebuffer,
2445 const struct drm_clip_rect *clips,
2446 const struct drm_vmw_rect *vclips,
2447 s32 dest_x, s32 dest_y,
2448 int num_clips,
2449 int increment,
2450 struct vmw_kms_dirty *dirty)
2451 {
2452 struct vmw_display_unit *units[VMWGFX_NUM_DISPLAY_UNITS];
2453 struct drm_crtc *crtc;
2454 u32 num_units = 0;
2455 u32 i, k;
2456
2457 dirty->dev_priv = dev_priv;
2458
2459 /* If crtc is passed, no need to iterate over other display units */
2460 if (dirty->crtc) {
2461 units[num_units++] = vmw_crtc_to_du(dirty->crtc);
2462 } else {
2463 list_for_each_entry(crtc, &dev_priv->dev->mode_config.crtc_list,
2464 head) {
2465 struct drm_plane *plane = crtc->primary;
2466
2467 if (plane->state->fb == &framebuffer->base)
2468 units[num_units++] = vmw_crtc_to_du(crtc);
2469 }
2470 }
2471
2472 for (k = 0; k < num_units; k++) {
2473 struct vmw_display_unit *unit = units[k];
2474 s32 crtc_x = unit->crtc.x;
2475 s32 crtc_y = unit->crtc.y;
2476 s32 crtc_width = unit->crtc.mode.hdisplay;
2477 s32 crtc_height = unit->crtc.mode.vdisplay;
2478 const struct drm_clip_rect *clips_ptr = clips;
2479 const struct drm_vmw_rect *vclips_ptr = vclips;
2480
2481 dirty->unit = unit;
2482 if (dirty->fifo_reserve_size > 0) {
2483 dirty->cmd = VMW_FIFO_RESERVE(dev_priv,
2484 dirty->fifo_reserve_size);
2485 if (!dirty->cmd)
2486 return -ENOMEM;
2487
2488 memset(dirty->cmd, 0, dirty->fifo_reserve_size);
2489 }
2490 dirty->num_hits = 0;
2491 for (i = 0; i < num_clips; i++, clips_ptr += increment,
2492 vclips_ptr += increment) {
2493 s32 clip_left;
2494 s32 clip_top;
2495
2496 /*
2497 * Select clip array type. Note that integer type
2498 * in @clips is unsigned short, whereas in @vclips
2499 * it's 32-bit.
2500 */
2501 if (clips) {
2502 dirty->fb_x = (s32) clips_ptr->x1;
2503 dirty->fb_y = (s32) clips_ptr->y1;
2504 dirty->unit_x2 = (s32) clips_ptr->x2 + dest_x -
2505 crtc_x;
2506 dirty->unit_y2 = (s32) clips_ptr->y2 + dest_y -
2507 crtc_y;
2508 } else {
2509 dirty->fb_x = vclips_ptr->x;
2510 dirty->fb_y = vclips_ptr->y;
2511 dirty->unit_x2 = dirty->fb_x + vclips_ptr->w +
2512 dest_x - crtc_x;
2513 dirty->unit_y2 = dirty->fb_y + vclips_ptr->h +
2514 dest_y - crtc_y;
2515 }
2516
2517 dirty->unit_x1 = dirty->fb_x + dest_x - crtc_x;
2518 dirty->unit_y1 = dirty->fb_y + dest_y - crtc_y;
2519
2520 /* Skip this clip if it's outside the crtc region */
2521 if (dirty->unit_x1 >= crtc_width ||
2522 dirty->unit_y1 >= crtc_height ||
2523 dirty->unit_x2 <= 0 || dirty->unit_y2 <= 0)
2524 continue;
2525
2526 /* Clip right and bottom to crtc limits */
2527 dirty->unit_x2 = min_t(s32, dirty->unit_x2,
2528 crtc_width);
2529 dirty->unit_y2 = min_t(s32, dirty->unit_y2,
2530 crtc_height);
2531
2532 /* Clip left and top to crtc limits */
2533 clip_left = min_t(s32, dirty->unit_x1, 0);
2534 clip_top = min_t(s32, dirty->unit_y1, 0);
2535 dirty->unit_x1 -= clip_left;
2536 dirty->unit_y1 -= clip_top;
2537 dirty->fb_x -= clip_left;
2538 dirty->fb_y -= clip_top;
2539
2540 dirty->clip(dirty);
2541 }
2542
2543 dirty->fifo_commit(dirty);
2544 }
2545
2546 return 0;
2547 }
2548
2549 /**
2550 * vmw_kms_helper_validation_finish - Helper for post KMS command submission
2551 * cleanup and fencing
2552 * @dev_priv: Pointer to the device-private struct
2553 * @file_priv: Pointer identifying the client when user-space fencing is used
2554 * @ctx: Pointer to the validation context
2555 * @out_fence: If non-NULL, returned refcounted fence-pointer
2556 * @user_fence_rep: If non-NULL, pointer to user-space address area
2557 * in which to copy user-space fence info
2558 */
vmw_kms_helper_validation_finish(struct vmw_private * dev_priv,struct drm_file * file_priv,struct vmw_validation_context * ctx,struct vmw_fence_obj ** out_fence,struct drm_vmw_fence_rep __user * user_fence_rep)2559 void vmw_kms_helper_validation_finish(struct vmw_private *dev_priv,
2560 struct drm_file *file_priv,
2561 struct vmw_validation_context *ctx,
2562 struct vmw_fence_obj **out_fence,
2563 struct drm_vmw_fence_rep __user *
2564 user_fence_rep)
2565 {
2566 struct vmw_fence_obj *fence = NULL;
2567 uint32_t handle = 0;
2568 int ret = 0;
2569
2570 if (file_priv || user_fence_rep || vmw_validation_has_bos(ctx) ||
2571 out_fence)
2572 ret = vmw_execbuf_fence_commands(file_priv, dev_priv, &fence,
2573 file_priv ? &handle : NULL);
2574 vmw_validation_done(ctx, fence);
2575 if (file_priv)
2576 vmw_execbuf_copy_fence_user(dev_priv, vmw_fpriv(file_priv),
2577 ret, user_fence_rep, fence,
2578 handle, -1, NULL);
2579 if (out_fence)
2580 *out_fence = fence;
2581 else
2582 vmw_fence_obj_unreference(&fence);
2583 }
2584
2585 /**
2586 * vmw_kms_update_proxy - Helper function to update a proxy surface from
2587 * its backing MOB.
2588 *
2589 * @res: Pointer to the surface resource
2590 * @clips: Clip rects in framebuffer (surface) space.
2591 * @num_clips: Number of clips in @clips.
2592 * @increment: Integer with which to increment the clip counter when looping.
2593 * Used to skip a predetermined number of clip rects.
2594 *
2595 * This function makes sure the proxy surface is updated from its backing MOB
2596 * using the region given by @clips. The surface resource @res and its backing
2597 * MOB needs to be reserved and validated on call.
2598 */
vmw_kms_update_proxy(struct vmw_resource * res,const struct drm_clip_rect * clips,unsigned num_clips,int increment)2599 int vmw_kms_update_proxy(struct vmw_resource *res,
2600 const struct drm_clip_rect *clips,
2601 unsigned num_clips,
2602 int increment)
2603 {
2604 struct vmw_private *dev_priv = res->dev_priv;
2605 struct drm_vmw_size *size = &vmw_res_to_srf(res)->base_size;
2606 struct {
2607 SVGA3dCmdHeader header;
2608 SVGA3dCmdUpdateGBImage body;
2609 } *cmd;
2610 SVGA3dBox *box;
2611 size_t copy_size = 0;
2612 int i;
2613
2614 if (!clips)
2615 return 0;
2616
2617 cmd = VMW_FIFO_RESERVE(dev_priv, sizeof(*cmd) * num_clips);
2618 if (!cmd)
2619 return -ENOMEM;
2620
2621 for (i = 0; i < num_clips; ++i, clips += increment, ++cmd) {
2622 box = &cmd->body.box;
2623
2624 cmd->header.id = SVGA_3D_CMD_UPDATE_GB_IMAGE;
2625 cmd->header.size = sizeof(cmd->body);
2626 cmd->body.image.sid = res->id;
2627 cmd->body.image.face = 0;
2628 cmd->body.image.mipmap = 0;
2629
2630 if (clips->x1 > size->width || clips->x2 > size->width ||
2631 clips->y1 > size->height || clips->y2 > size->height) {
2632 DRM_ERROR("Invalid clips outsize of framebuffer.\n");
2633 return -EINVAL;
2634 }
2635
2636 box->x = clips->x1;
2637 box->y = clips->y1;
2638 box->z = 0;
2639 box->w = clips->x2 - clips->x1;
2640 box->h = clips->y2 - clips->y1;
2641 box->d = 1;
2642
2643 copy_size += sizeof(*cmd);
2644 }
2645
2646 vmw_fifo_commit(dev_priv, copy_size);
2647
2648 return 0;
2649 }
2650
vmw_kms_fbdev_init_data(struct vmw_private * dev_priv,unsigned unit,u32 max_width,u32 max_height,struct drm_connector ** p_con,struct drm_crtc ** p_crtc,struct drm_display_mode ** p_mode)2651 int vmw_kms_fbdev_init_data(struct vmw_private *dev_priv,
2652 unsigned unit,
2653 u32 max_width,
2654 u32 max_height,
2655 struct drm_connector **p_con,
2656 struct drm_crtc **p_crtc,
2657 struct drm_display_mode **p_mode)
2658 {
2659 struct drm_connector *con;
2660 struct vmw_display_unit *du;
2661 struct drm_display_mode *mode;
2662 int i = 0;
2663 int ret = 0;
2664
2665 mutex_lock(&dev_priv->dev->mode_config.mutex);
2666 list_for_each_entry(con, &dev_priv->dev->mode_config.connector_list,
2667 head) {
2668 if (i == unit)
2669 break;
2670
2671 ++i;
2672 }
2673
2674 if (i != unit) {
2675 DRM_ERROR("Could not find initial display unit.\n");
2676 ret = -EINVAL;
2677 goto out_unlock;
2678 }
2679
2680 if (list_empty(&con->modes))
2681 (void) vmw_du_connector_fill_modes(con, max_width, max_height);
2682
2683 if (list_empty(&con->modes)) {
2684 DRM_ERROR("Could not find initial display mode.\n");
2685 ret = -EINVAL;
2686 goto out_unlock;
2687 }
2688
2689 du = vmw_connector_to_du(con);
2690 *p_con = con;
2691 *p_crtc = &du->crtc;
2692
2693 list_for_each_entry(mode, &con->modes, head) {
2694 if (mode->type & DRM_MODE_TYPE_PREFERRED)
2695 break;
2696 }
2697
2698 if (mode->type & DRM_MODE_TYPE_PREFERRED)
2699 *p_mode = mode;
2700 else {
2701 WARN_ONCE(true, "Could not find initial preferred mode.\n");
2702 *p_mode = list_first_entry(&con->modes,
2703 struct drm_display_mode,
2704 head);
2705 }
2706
2707 out_unlock:
2708 mutex_unlock(&dev_priv->dev->mode_config.mutex);
2709
2710 return ret;
2711 }
2712
2713 /**
2714 * vmw_kms_create_implicit_placement_proparty - Set up the implicit placement
2715 * property.
2716 *
2717 * @dev_priv: Pointer to a device private struct.
2718 *
2719 * Sets up the implicit placement property unless it's already set up.
2720 */
2721 void
vmw_kms_create_implicit_placement_property(struct vmw_private * dev_priv)2722 vmw_kms_create_implicit_placement_property(struct vmw_private *dev_priv)
2723 {
2724 if (dev_priv->implicit_placement_property)
2725 return;
2726
2727 dev_priv->implicit_placement_property =
2728 drm_property_create_range(dev_priv->dev,
2729 DRM_MODE_PROP_IMMUTABLE,
2730 "implicit_placement", 0, 1);
2731 }
2732
2733 /**
2734 * vmw_kms_suspend - Save modesetting state and turn modesetting off.
2735 *
2736 * @dev: Pointer to the drm device
2737 * Return: 0 on success. Negative error code on failure.
2738 */
vmw_kms_suspend(struct drm_device * dev)2739 int vmw_kms_suspend(struct drm_device *dev)
2740 {
2741 struct vmw_private *dev_priv = vmw_priv(dev);
2742
2743 dev_priv->suspend_state = drm_atomic_helper_suspend(dev);
2744 if (IS_ERR(dev_priv->suspend_state)) {
2745 int ret = PTR_ERR(dev_priv->suspend_state);
2746
2747 DRM_ERROR("Failed kms suspend: %d\n", ret);
2748 dev_priv->suspend_state = NULL;
2749
2750 return ret;
2751 }
2752
2753 return 0;
2754 }
2755
2756
2757 /**
2758 * vmw_kms_resume - Re-enable modesetting and restore state
2759 *
2760 * @dev: Pointer to the drm device
2761 * Return: 0 on success. Negative error code on failure.
2762 *
2763 * State is resumed from a previous vmw_kms_suspend(). It's illegal
2764 * to call this function without a previous vmw_kms_suspend().
2765 */
vmw_kms_resume(struct drm_device * dev)2766 int vmw_kms_resume(struct drm_device *dev)
2767 {
2768 struct vmw_private *dev_priv = vmw_priv(dev);
2769 int ret;
2770
2771 if (WARN_ON(!dev_priv->suspend_state))
2772 return 0;
2773
2774 ret = drm_atomic_helper_resume(dev, dev_priv->suspend_state);
2775 dev_priv->suspend_state = NULL;
2776
2777 return ret;
2778 }
2779
2780 /**
2781 * vmw_kms_lost_device - Notify kms that modesetting capabilities will be lost
2782 *
2783 * @dev: Pointer to the drm device
2784 */
vmw_kms_lost_device(struct drm_device * dev)2785 void vmw_kms_lost_device(struct drm_device *dev)
2786 {
2787 drm_atomic_helper_shutdown(dev);
2788 }
2789
2790 /**
2791 * vmw_du_helper_plane_update - Helper to do plane update on a display unit.
2792 * @update: The closure structure.
2793 *
2794 * Call this helper after setting callbacks in &vmw_du_update_plane to do plane
2795 * update on display unit.
2796 *
2797 * Return: 0 on success or a negative error code on failure.
2798 */
vmw_du_helper_plane_update(struct vmw_du_update_plane * update)2799 int vmw_du_helper_plane_update(struct vmw_du_update_plane *update)
2800 {
2801 struct drm_plane_state *state = update->plane->state;
2802 struct drm_plane_state *old_state = update->old_state;
2803 struct drm_atomic_helper_damage_iter iter;
2804 struct drm_rect clip;
2805 struct drm_rect bb;
2806 DECLARE_VAL_CONTEXT(val_ctx, NULL, 0);
2807 uint32_t reserved_size = 0;
2808 uint32_t submit_size = 0;
2809 uint32_t curr_size = 0;
2810 uint32_t num_hits = 0;
2811 void *cmd_start;
2812 char *cmd_next;
2813 int ret;
2814
2815 /*
2816 * Iterate in advance to check if really need plane update and find the
2817 * number of clips that actually are in plane src for fifo allocation.
2818 */
2819 drm_atomic_helper_damage_iter_init(&iter, old_state, state);
2820 drm_atomic_for_each_plane_damage(&iter, &clip)
2821 num_hits++;
2822
2823 if (num_hits == 0)
2824 return 0;
2825
2826 if (update->vfb->bo) {
2827 struct vmw_framebuffer_bo *vfbbo =
2828 container_of(update->vfb, typeof(*vfbbo), base);
2829
2830 ret = vmw_validation_add_bo(&val_ctx, vfbbo->buffer, false,
2831 update->cpu_blit);
2832 } else {
2833 struct vmw_framebuffer_surface *vfbs =
2834 container_of(update->vfb, typeof(*vfbs), base);
2835
2836 ret = vmw_validation_add_resource(&val_ctx, &vfbs->surface->res,
2837 0, VMW_RES_DIRTY_NONE, NULL,
2838 NULL);
2839 }
2840
2841 if (ret)
2842 return ret;
2843
2844 ret = vmw_validation_prepare(&val_ctx, update->mutex, update->intr);
2845 if (ret)
2846 goto out_unref;
2847
2848 reserved_size = update->calc_fifo_size(update, num_hits);
2849 cmd_start = VMW_FIFO_RESERVE(update->dev_priv, reserved_size);
2850 if (!cmd_start) {
2851 ret = -ENOMEM;
2852 goto out_revert;
2853 }
2854
2855 cmd_next = cmd_start;
2856
2857 if (update->post_prepare) {
2858 curr_size = update->post_prepare(update, cmd_next);
2859 cmd_next += curr_size;
2860 submit_size += curr_size;
2861 }
2862
2863 if (update->pre_clip) {
2864 curr_size = update->pre_clip(update, cmd_next, num_hits);
2865 cmd_next += curr_size;
2866 submit_size += curr_size;
2867 }
2868
2869 bb.x1 = INT_MAX;
2870 bb.y1 = INT_MAX;
2871 bb.x2 = INT_MIN;
2872 bb.y2 = INT_MIN;
2873
2874 drm_atomic_helper_damage_iter_init(&iter, old_state, state);
2875 drm_atomic_for_each_plane_damage(&iter, &clip) {
2876 uint32_t fb_x = clip.x1;
2877 uint32_t fb_y = clip.y1;
2878
2879 vmw_du_translate_to_crtc(state, &clip);
2880 if (update->clip) {
2881 curr_size = update->clip(update, cmd_next, &clip, fb_x,
2882 fb_y);
2883 cmd_next += curr_size;
2884 submit_size += curr_size;
2885 }
2886 bb.x1 = min_t(int, bb.x1, clip.x1);
2887 bb.y1 = min_t(int, bb.y1, clip.y1);
2888 bb.x2 = max_t(int, bb.x2, clip.x2);
2889 bb.y2 = max_t(int, bb.y2, clip.y2);
2890 }
2891
2892 curr_size = update->post_clip(update, cmd_next, &bb);
2893 submit_size += curr_size;
2894
2895 if (reserved_size < submit_size)
2896 submit_size = 0;
2897
2898 vmw_fifo_commit(update->dev_priv, submit_size);
2899
2900 vmw_kms_helper_validation_finish(update->dev_priv, NULL, &val_ctx,
2901 update->out_fence, NULL);
2902 return ret;
2903
2904 out_revert:
2905 vmw_validation_revert(&val_ctx);
2906
2907 out_unref:
2908 vmw_validation_unref_lists(&val_ctx);
2909 return ret;
2910 }
2911