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Merge remote-tracking branch 'moduleh/module.h-split'
[linux-2.6/next.git] / drivers / gpu / drm / vmwgfx / vmwgfx_kms.c
blobdfe32e62bd90cc083a6667a3090b02c694984e92
1 /**************************************************************************
2 *
3 * Copyright © 2009 VMware, Inc., Palo Alto, CA., USA
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
21 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
24 * USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28 #include "vmwgfx_kms.h"
29
30 /* Might need a hrtimer here? */
31 #define VMWGFX_PRESENT_RATE ((HZ / 60 > 0) ? HZ / 60 : 1)
32
33 static int vmw_surface_dmabuf_pin(struct vmw_framebuffer *vfb);
34 static int vmw_surface_dmabuf_unpin(struct vmw_framebuffer *vfb);
35
36 void vmw_display_unit_cleanup(struct vmw_display_unit *du)
37 {
38 if (du->cursor_surface)
39 vmw_surface_unreference(&du->cursor_surface);
40 if (du->cursor_dmabuf)
41 vmw_dmabuf_unreference(&du->cursor_dmabuf);
42 drm_crtc_cleanup(&du->crtc);
43 drm_encoder_cleanup(&du->encoder);
44 drm_connector_cleanup(&du->connector);
45 }
46
47 /*
48 * Display Unit Cursor functions
49 */
50
51 int vmw_cursor_update_image(struct vmw_private *dev_priv,
52 u32 *image, u32 width, u32 height,
53 u32 hotspotX, u32 hotspotY)
54 {
55 struct {
56 u32 cmd;
57 SVGAFifoCmdDefineAlphaCursor cursor;
58 } *cmd;
59 u32 image_size = width * height * 4;
60 u32 cmd_size = sizeof(*cmd) + image_size;
61
62 if (!image)
63 return -EINVAL;
64
65 cmd = vmw_fifo_reserve(dev_priv, cmd_size);
66 if (unlikely(cmd == NULL)) {
67 DRM_ERROR("Fifo reserve failed.\n");
68 return -ENOMEM;
69 }
70
71 memset(cmd, 0, sizeof(*cmd));
72
73 memcpy(&cmd[1], image, image_size);
74
75 cmd->cmd = cpu_to_le32(SVGA_CMD_DEFINE_ALPHA_CURSOR);
76 cmd->cursor.id = cpu_to_le32(0);
77 cmd->cursor.width = cpu_to_le32(width);
78 cmd->cursor.height = cpu_to_le32(height);
79 cmd->cursor.hotspotX = cpu_to_le32(hotspotX);
80 cmd->cursor.hotspotY = cpu_to_le32(hotspotY);
81
82 vmw_fifo_commit(dev_priv, cmd_size);
83
84 return 0;
85 }
86
87 void vmw_cursor_update_position(struct vmw_private *dev_priv,
88 bool show, int x, int y)
89 {
90 __le32 __iomem *fifo_mem = dev_priv->mmio_virt;
91 uint32_t count;
92
93 iowrite32(show ? 1 : 0, fifo_mem + SVGA_FIFO_CURSOR_ON);
94 iowrite32(x, fifo_mem + SVGA_FIFO_CURSOR_X);
95 iowrite32(y, fifo_mem + SVGA_FIFO_CURSOR_Y);
96 count = ioread32(fifo_mem + SVGA_FIFO_CURSOR_COUNT);
97 iowrite32(++count, fifo_mem + SVGA_FIFO_CURSOR_COUNT);
98 }
99
100 int vmw_du_crtc_cursor_set(struct drm_crtc *crtc, struct drm_file *file_priv,
101 uint32_t handle, uint32_t width, uint32_t height)
102 {
103 struct vmw_private *dev_priv = vmw_priv(crtc->dev);
104 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
105 struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
106 struct vmw_surface *surface = NULL;
107 struct vmw_dma_buffer *dmabuf = NULL;
108 int ret;
109
110 if (handle) {
111 ret = vmw_user_surface_lookup_handle(dev_priv, tfile,
112 handle, &surface);
113 if (!ret) {
114 if (!surface->snooper.image) {
115 DRM_ERROR("surface not suitable for cursor\n");
116 return -EINVAL;
117 }
118 } else {
119 ret = vmw_user_dmabuf_lookup(tfile,
120 handle, &dmabuf);
121 if (ret) {
122 DRM_ERROR("failed to find surface or dmabuf: %i\n", ret);
123 return -EINVAL;
124 }
125 }
126 }
127
128 /* takedown old cursor */
129 if (du->cursor_surface) {
130 du->cursor_surface->snooper.crtc = NULL;
131 vmw_surface_unreference(&du->cursor_surface);
132 }
133 if (du->cursor_dmabuf)
134 vmw_dmabuf_unreference(&du->cursor_dmabuf);
135
136 /* setup new image */
137 if (surface) {
138 /* vmw_user_surface_lookup takes one reference */
139 du->cursor_surface = surface;
140
141 du->cursor_surface->snooper.crtc = crtc;
142 du->cursor_age = du->cursor_surface->snooper.age;
143 vmw_cursor_update_image(dev_priv, surface->snooper.image,
144 64, 64, du->hotspot_x, du->hotspot_y);
145 } else if (dmabuf) {
146 struct ttm_bo_kmap_obj map;
147 unsigned long kmap_offset;
148 unsigned long kmap_num;
149 void *virtual;
150 bool dummy;
151
152 /* vmw_user_surface_lookup takes one reference */
153 du->cursor_dmabuf = dmabuf;
154
155 kmap_offset = 0;
156 kmap_num = (64*64*4) >> PAGE_SHIFT;
157
158 ret = ttm_bo_reserve(&dmabuf->base, true, false, false, 0);
159 if (unlikely(ret != 0)) {
160 DRM_ERROR("reserve failed\n");
161 return -EINVAL;
162 }
163
164 ret = ttm_bo_kmap(&dmabuf->base, kmap_offset, kmap_num, &map);
165 if (unlikely(ret != 0))
166 goto err_unreserve;
167
168 virtual = ttm_kmap_obj_virtual(&map, &dummy);
169 vmw_cursor_update_image(dev_priv, virtual, 64, 64,
170 du->hotspot_x, du->hotspot_y);
171
172 ttm_bo_kunmap(&map);
173 err_unreserve:
174 ttm_bo_unreserve(&dmabuf->base);
175
176 } else {
177 vmw_cursor_update_position(dev_priv, false, 0, 0);
178 return 0;
179 }
180
181 vmw_cursor_update_position(dev_priv, true, du->cursor_x, du->cursor_y);
182
183 return 0;
184 }
185
186 int vmw_du_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
187 {
188 struct vmw_private *dev_priv = vmw_priv(crtc->dev);
189 struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
190 bool shown = du->cursor_surface || du->cursor_dmabuf ? true : false;
191
192 du->cursor_x = x + crtc->x;
193 du->cursor_y = y + crtc->y;
194
195 vmw_cursor_update_position(dev_priv, shown,
196 du->cursor_x, du->cursor_y);
197
198 return 0;
199 }
200
201 void vmw_kms_cursor_snoop(struct vmw_surface *srf,
202 struct ttm_object_file *tfile,
203 struct ttm_buffer_object *bo,
204 SVGA3dCmdHeader *header)
205 {
206 struct ttm_bo_kmap_obj map;
207 unsigned long kmap_offset;
208 unsigned long kmap_num;
209 SVGA3dCopyBox *box;
210 unsigned box_count;
211 void *virtual;
212 bool dummy;
213 struct vmw_dma_cmd {
214 SVGA3dCmdHeader header;
215 SVGA3dCmdSurfaceDMA dma;
216 } *cmd;
217 int ret;
218
219 cmd = container_of(header, struct vmw_dma_cmd, header);
220
221 /* No snooper installed */
222 if (!srf->snooper.image)
223 return;
224
225 if (cmd->dma.host.face != 0 || cmd->dma.host.mipmap != 0) {
226 DRM_ERROR("face and mipmap for cursors should never != 0\n");
227 return;
228 }
229
230 if (cmd->header.size < 64) {
231 DRM_ERROR("at least one full copy box must be given\n");
232 return;
233 }
234
235 box = (SVGA3dCopyBox *)&cmd[1];
236 box_count = (cmd->header.size - sizeof(SVGA3dCmdSurfaceDMA)) /
237 sizeof(SVGA3dCopyBox);
238
239 if (cmd->dma.guest.pitch != (64 * 4) ||
240 cmd->dma.guest.ptr.offset % PAGE_SIZE ||
241 box->x != 0 || box->y != 0 || box->z != 0 ||
242 box->srcx != 0 || box->srcy != 0 || box->srcz != 0 ||
243 box->w != 64 || box->h != 64 || box->d != 1 ||
244 box_count != 1) {
245 /* TODO handle none page aligned offsets */
246 /* TODO handle partial uploads and pitch != 256 */
247 /* TODO handle more then one copy (size != 64) */
248 DRM_ERROR("lazy programmer, can't handle weird stuff\n");
249 return;
250 }
251
252 kmap_offset = cmd->dma.guest.ptr.offset >> PAGE_SHIFT;
253 kmap_num = (64*64*4) >> PAGE_SHIFT;
254
255 ret = ttm_bo_reserve(bo, true, false, false, 0);
256 if (unlikely(ret != 0)) {
257 DRM_ERROR("reserve failed\n");
258 return;
259 }
260
261 ret = ttm_bo_kmap(bo, kmap_offset, kmap_num, &map);
262 if (unlikely(ret != 0))
263 goto err_unreserve;
264
265 virtual = ttm_kmap_obj_virtual(&map, &dummy);
266
267 memcpy(srf->snooper.image, virtual, 64*64*4);
268 srf->snooper.age++;
269
270 /* we can't call this function from this function since execbuf has
271 * reserved fifo space.
272 *
273 * if (srf->snooper.crtc)
274 * vmw_ldu_crtc_cursor_update_image(dev_priv,
275 * srf->snooper.image, 64, 64,
276 * du->hotspot_x, du->hotspot_y);
277 */
278
279 ttm_bo_kunmap(&map);
280 err_unreserve:
281 ttm_bo_unreserve(bo);
282 }
283
284 void vmw_kms_cursor_post_execbuf(struct vmw_private *dev_priv)
285 {
286 struct drm_device *dev = dev_priv->dev;
287 struct vmw_display_unit *du;
288 struct drm_crtc *crtc;
289
290 mutex_lock(&dev->mode_config.mutex);
291
292 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
293 du = vmw_crtc_to_du(crtc);
294 if (!du->cursor_surface ||
295 du->cursor_age == du->cursor_surface->snooper.age)
296 continue;
297
298 du->cursor_age = du->cursor_surface->snooper.age;
299 vmw_cursor_update_image(dev_priv,
300 du->cursor_surface->snooper.image,
301 64, 64, du->hotspot_x, du->hotspot_y);
302 }
303
304 mutex_unlock(&dev->mode_config.mutex);
305 }
306
307 /*
308 * Generic framebuffer code
309 */
310
311 int vmw_framebuffer_create_handle(struct drm_framebuffer *fb,
312 struct drm_file *file_priv,
313 unsigned int *handle)
314 {
315 if (handle)
316 handle = 0;
317
318 return 0;
319 }
320
321 /*
322 * Surface framebuffer code
323 */
324
325 #define vmw_framebuffer_to_vfbs(x) \
326 container_of(x, struct vmw_framebuffer_surface, base.base)
327
328 struct vmw_framebuffer_surface {
329 struct vmw_framebuffer base;
330 struct vmw_surface *surface;
331 struct vmw_dma_buffer *buffer;
332 struct delayed_work d_work;
333 struct mutex work_lock;
334 bool present_fs;
335 struct list_head head;
336 struct drm_master *master;
337 };
338
339 /**
340 * vmw_kms_idle_workqueues - Flush workqueues on this master
341 *
342 * @vmaster - Pointer identifying the master, for the surfaces of which
343 * we idle the dirty work queues.
344 *
345 * This function should be called with the ttm lock held in exclusive mode
346 * to idle all dirty work queues before the fifo is taken down.
347 *
348 * The work task may actually requeue itself, but after the flush returns we're
349 * sure that there's nothing to present, since the ttm lock is held in
350 * exclusive mode, so the fifo will never get used.
351 */
352
353 void vmw_kms_idle_workqueues(struct vmw_master *vmaster)
354 {
355 struct vmw_framebuffer_surface *entry;
356
357 mutex_lock(&vmaster->fb_surf_mutex);
358 list_for_each_entry(entry, &vmaster->fb_surf, head) {
359 if (cancel_delayed_work_sync(&entry->d_work))
360 (void) entry->d_work.work.func(&entry->d_work.work);
361
362 (void) cancel_delayed_work_sync(&entry->d_work);
363 }
364 mutex_unlock(&vmaster->fb_surf_mutex);
365 }
366
367 void vmw_framebuffer_surface_destroy(struct drm_framebuffer *framebuffer)
368 {
369 struct vmw_framebuffer_surface *vfbs =
370 vmw_framebuffer_to_vfbs(framebuffer);
371 struct vmw_master *vmaster = vmw_master(vfbs->master);
372
373
374 mutex_lock(&vmaster->fb_surf_mutex);
375 list_del(&vfbs->head);
376 mutex_unlock(&vmaster->fb_surf_mutex);
377
378 cancel_delayed_work_sync(&vfbs->d_work);
379 drm_master_put(&vfbs->master);
380 drm_framebuffer_cleanup(framebuffer);
381 vmw_surface_unreference(&vfbs->surface);
382
383 kfree(vfbs);
384 }
385
386 static void vmw_framebuffer_present_fs_callback(struct work_struct *work)
387 {
388 struct delayed_work *d_work =
389 container_of(work, struct delayed_work, work);
390 struct vmw_framebuffer_surface *vfbs =
391 container_of(d_work, struct vmw_framebuffer_surface, d_work);
392 struct vmw_surface *surf = vfbs->surface;
393 struct drm_framebuffer *framebuffer = &vfbs->base.base;
394 struct vmw_private *dev_priv = vmw_priv(framebuffer->dev);
395
396 struct {
397 SVGA3dCmdHeader header;
398 SVGA3dCmdPresent body;
399 SVGA3dCopyRect cr;
400 } *cmd;
401
402 /**
403 * Strictly we should take the ttm_lock in read mode before accessing
404 * the fifo, to make sure the fifo is present and up. However,
405 * instead we flush all workqueues under the ttm lock in exclusive mode
406 * before taking down the fifo.
407 */
408 mutex_lock(&vfbs->work_lock);
409 if (!vfbs->present_fs)
410 goto out_unlock;
411
412 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
413 if (unlikely(cmd == NULL))
414 goto out_resched;
415
416 cmd->header.id = cpu_to_le32(SVGA_3D_CMD_PRESENT);
417 cmd->header.size = cpu_to_le32(sizeof(cmd->body) + sizeof(cmd->cr));
418 cmd->body.sid = cpu_to_le32(surf->res.id);
419 cmd->cr.x = cpu_to_le32(0);
420 cmd->cr.y = cpu_to_le32(0);
421 cmd->cr.srcx = cmd->cr.x;
422 cmd->cr.srcy = cmd->cr.y;
423 cmd->cr.w = cpu_to_le32(framebuffer->width);
424 cmd->cr.h = cpu_to_le32(framebuffer->height);
425 vfbs->present_fs = false;
426 vmw_fifo_commit(dev_priv, sizeof(*cmd));
427 out_resched:
428 /**
429 * Will not re-add if already pending.
430 */
431 schedule_delayed_work(&vfbs->d_work, VMWGFX_PRESENT_RATE);
432 out_unlock:
433 mutex_unlock(&vfbs->work_lock);
434 }
435
436
437 int vmw_framebuffer_surface_dirty(struct drm_framebuffer *framebuffer,
438 struct drm_file *file_priv,
439 unsigned flags, unsigned color,
440 struct drm_clip_rect *clips,
441 unsigned num_clips)
442 {
443 struct vmw_private *dev_priv = vmw_priv(framebuffer->dev);
444 struct vmw_master *vmaster = vmw_master(file_priv->master);
445 struct vmw_framebuffer_surface *vfbs =
446 vmw_framebuffer_to_vfbs(framebuffer);
447 struct vmw_surface *surf = vfbs->surface;
448 struct drm_clip_rect norect;
449 SVGA3dCopyRect *cr;
450 int i, inc = 1;
451 int ret;
452
453 struct {
454 SVGA3dCmdHeader header;
455 SVGA3dCmdPresent body;
456 SVGA3dCopyRect cr;
457 } *cmd;
458
459 if (unlikely(vfbs->master != file_priv->master))
460 return -EINVAL;
461
462 ret = ttm_read_lock(&vmaster->lock, true);
463 if (unlikely(ret != 0))
464 return ret;
465
466 if (!num_clips ||
467 !(dev_priv->fifo.capabilities &
468 SVGA_FIFO_CAP_SCREEN_OBJECT)) {
469 int ret;
470
471 mutex_lock(&vfbs->work_lock);
472 vfbs->present_fs = true;
473 ret = schedule_delayed_work(&vfbs->d_work, VMWGFX_PRESENT_RATE);
474 mutex_unlock(&vfbs->work_lock);
475 if (ret) {
476 /**
477 * No work pending, Force immediate present.
478 */
479 vmw_framebuffer_present_fs_callback(&vfbs->d_work.work);
480 }
481 ttm_read_unlock(&vmaster->lock);
482 return 0;
483 }
484
485 if (!num_clips) {
486 num_clips = 1;
487 clips = &norect;
488 norect.x1 = norect.y1 = 0;
489 norect.x2 = framebuffer->width;
490 norect.y2 = framebuffer->height;
491 } else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
492 num_clips /= 2;
493 inc = 2; /* skip source rects */
494 }
495
496 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd) + (num_clips - 1) * sizeof(cmd->cr));
497 if (unlikely(cmd == NULL)) {
498 DRM_ERROR("Fifo reserve failed.\n");
499 ttm_read_unlock(&vmaster->lock);
500 return -ENOMEM;
501 }
502
503 memset(cmd, 0, sizeof(*cmd));
504
505 cmd->header.id = cpu_to_le32(SVGA_3D_CMD_PRESENT);
506 cmd->header.size = cpu_to_le32(sizeof(cmd->body) + num_clips * sizeof(cmd->cr));
507 cmd->body.sid = cpu_to_le32(surf->res.id);
508
509 for (i = 0, cr = &cmd->cr; i < num_clips; i++, cr++, clips += inc) {
510 cr->x = cpu_to_le16(clips->x1);
511 cr->y = cpu_to_le16(clips->y1);
512 cr->srcx = cr->x;
513 cr->srcy = cr->y;
514 cr->w = cpu_to_le16(clips->x2 - clips->x1);
515 cr->h = cpu_to_le16(clips->y2 - clips->y1);
516 }
517
518 vmw_fifo_commit(dev_priv, sizeof(*cmd) + (num_clips - 1) * sizeof(cmd->cr));
519 ttm_read_unlock(&vmaster->lock);
520 return 0;
521 }
522
523 static struct drm_framebuffer_funcs vmw_framebuffer_surface_funcs = {
524 .destroy = vmw_framebuffer_surface_destroy,
525 .dirty = vmw_framebuffer_surface_dirty,
526 .create_handle = vmw_framebuffer_create_handle,
527 };
528
529 static int vmw_kms_new_framebuffer_surface(struct vmw_private *dev_priv,
530 struct drm_file *file_priv,
531 struct vmw_surface *surface,
532 struct vmw_framebuffer **out,
533 const struct drm_mode_fb_cmd
534 *mode_cmd)
535
536 {
537 struct drm_device *dev = dev_priv->dev;
538 struct vmw_framebuffer_surface *vfbs;
539 enum SVGA3dSurfaceFormat format;
540 struct vmw_master *vmaster = vmw_master(file_priv->master);
541 int ret;
542
543 /*
544 * Sanity checks.
545 */
546
547 if (unlikely(surface->mip_levels[0] != 1 ||
548 surface->num_sizes != 1 ||
549 surface->sizes[0].width < mode_cmd->width ||
550 surface->sizes[0].height < mode_cmd->height ||
551 surface->sizes[0].depth != 1)) {
552 DRM_ERROR("Incompatible surface dimensions "
553 "for requested mode.\n");
554 return -EINVAL;
555 }
556
557 switch (mode_cmd->depth) {
558 case 32:
559 format = SVGA3D_A8R8G8B8;
560 break;
561 case 24:
562 format = SVGA3D_X8R8G8B8;
563 break;
564 case 16:
565 format = SVGA3D_R5G6B5;
566 break;
567 case 15:
568 format = SVGA3D_A1R5G5B5;
569 break;
570 default:
571 DRM_ERROR("Invalid color depth: %d\n", mode_cmd->depth);
572 return -EINVAL;
573 }
574
575 if (unlikely(format != surface->format)) {
576 DRM_ERROR("Invalid surface format for requested mode.\n");
577 return -EINVAL;
578 }
579
580 vfbs = kzalloc(sizeof(*vfbs), GFP_KERNEL);
581 if (!vfbs) {
582 ret = -ENOMEM;
583 goto out_err1;
584 }
585
586 ret = drm_framebuffer_init(dev, &vfbs->base.base,
587 &vmw_framebuffer_surface_funcs);
588 if (ret)
589 goto out_err2;
590
591 if (!vmw_surface_reference(surface)) {
592 DRM_ERROR("failed to reference surface %p\n", surface);
593 goto out_err3;
594 }
595
596 /* XXX get the first 3 from the surface info */
597 vfbs->base.base.bits_per_pixel = mode_cmd->bpp;
598 vfbs->base.base.pitch = mode_cmd->pitch;
599 vfbs->base.base.depth = mode_cmd->depth;
600 vfbs->base.base.width = mode_cmd->width;
601 vfbs->base.base.height = mode_cmd->height;
602 vfbs->base.pin = &vmw_surface_dmabuf_pin;
603 vfbs->base.unpin = &vmw_surface_dmabuf_unpin;
604 vfbs->surface = surface;
605 vfbs->master = drm_master_get(file_priv->master);
606 mutex_init(&vfbs->work_lock);
607
608 mutex_lock(&vmaster->fb_surf_mutex);
609 INIT_DELAYED_WORK(&vfbs->d_work, &vmw_framebuffer_present_fs_callback);
610 list_add_tail(&vfbs->head, &vmaster->fb_surf);
611 mutex_unlock(&vmaster->fb_surf_mutex);
612
613 *out = &vfbs->base;
614
615 return 0;
616
617 out_err3:
618 drm_framebuffer_cleanup(&vfbs->base.base);
619 out_err2:
620 kfree(vfbs);
621 out_err1:
622 return ret;
623 }
624
625 /*
626 * Dmabuf framebuffer code
627 */
628
629 #define vmw_framebuffer_to_vfbd(x) \
630 container_of(x, struct vmw_framebuffer_dmabuf, base.base)
631
632 struct vmw_framebuffer_dmabuf {
633 struct vmw_framebuffer base;
634 struct vmw_dma_buffer *buffer;
635 };
636
637 void vmw_framebuffer_dmabuf_destroy(struct drm_framebuffer *framebuffer)
638 {
639 struct vmw_framebuffer_dmabuf *vfbd =
640 vmw_framebuffer_to_vfbd(framebuffer);
641
642 drm_framebuffer_cleanup(framebuffer);
643 vmw_dmabuf_unreference(&vfbd->buffer);
644
645 kfree(vfbd);
646 }
647
648 int vmw_framebuffer_dmabuf_dirty(struct drm_framebuffer *framebuffer,
649 struct drm_file *file_priv,
650 unsigned flags, unsigned color,
651 struct drm_clip_rect *clips,
652 unsigned num_clips)
653 {
654 struct vmw_private *dev_priv = vmw_priv(framebuffer->dev);
655 struct vmw_master *vmaster = vmw_master(file_priv->master);
656 struct drm_clip_rect norect;
657 int ret;
658 struct {
659 uint32_t header;
660 SVGAFifoCmdUpdate body;
661 } *cmd;
662 int i, increment = 1;
663
664 ret = ttm_read_lock(&vmaster->lock, true);
665 if (unlikely(ret != 0))
666 return ret;
667
668 if (!num_clips) {
669 num_clips = 1;
670 clips = &norect;
671 norect.x1 = norect.y1 = 0;
672 norect.x2 = framebuffer->width;
673 norect.y2 = framebuffer->height;
674 } else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
675 num_clips /= 2;
676 increment = 2;
677 }
678
679 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd) * num_clips);
680 if (unlikely(cmd == NULL)) {
681 DRM_ERROR("Fifo reserve failed.\n");
682 ttm_read_unlock(&vmaster->lock);
683 return -ENOMEM;
684 }
685
686 for (i = 0; i < num_clips; i++, clips += increment) {
687 cmd[i].header = cpu_to_le32(SVGA_CMD_UPDATE);
688 cmd[i].body.x = cpu_to_le32(clips->x1);
689 cmd[i].body.y = cpu_to_le32(clips->y1);
690 cmd[i].body.width = cpu_to_le32(clips->x2 - clips->x1);
691 cmd[i].body.height = cpu_to_le32(clips->y2 - clips->y1);
692 }
693
694 vmw_fifo_commit(dev_priv, sizeof(*cmd) * num_clips);
695 ttm_read_unlock(&vmaster->lock);
696
697 return 0;
698 }
699
700 static struct drm_framebuffer_funcs vmw_framebuffer_dmabuf_funcs = {
701 .destroy = vmw_framebuffer_dmabuf_destroy,
702 .dirty = vmw_framebuffer_dmabuf_dirty,
703 .create_handle = vmw_framebuffer_create_handle,
704 };
705
706 static int vmw_surface_dmabuf_pin(struct vmw_framebuffer *vfb)
707 {
708 struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
709 struct vmw_framebuffer_surface *vfbs =
710 vmw_framebuffer_to_vfbs(&vfb->base);
711 unsigned long size = vfbs->base.base.pitch * vfbs->base.base.height;
712 int ret;
713
714 vfbs->buffer = kzalloc(sizeof(*vfbs->buffer), GFP_KERNEL);
715 if (unlikely(vfbs->buffer == NULL))
716 return -ENOMEM;
717
718 vmw_overlay_pause_all(dev_priv);
719 ret = vmw_dmabuf_init(dev_priv, vfbs->buffer, size,
720 &vmw_vram_ne_placement,
721 false, &vmw_dmabuf_bo_free);
722 vmw_overlay_resume_all(dev_priv);
723 if (unlikely(ret != 0))
724 vfbs->buffer = NULL;
725
726 return ret;
727 }
728
729 static int vmw_surface_dmabuf_unpin(struct vmw_framebuffer *vfb)
730 {
731 struct ttm_buffer_object *bo;
732 struct vmw_framebuffer_surface *vfbs =
733 vmw_framebuffer_to_vfbs(&vfb->base);
734
735 if (unlikely(vfbs->buffer == NULL))
736 return 0;
737
738 bo = &vfbs->buffer->base;
739 ttm_bo_unref(&bo);
740 vfbs->buffer = NULL;
741
742 return 0;
743 }
744
745 static int vmw_framebuffer_dmabuf_pin(struct vmw_framebuffer *vfb)
746 {
747 struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
748 struct vmw_framebuffer_dmabuf *vfbd =
749 vmw_framebuffer_to_vfbd(&vfb->base);
750 int ret;
751
752
753 vmw_overlay_pause_all(dev_priv);
754
755 ret = vmw_dmabuf_to_start_of_vram(dev_priv, vfbd->buffer);
756
757 vmw_overlay_resume_all(dev_priv);
758
759 WARN_ON(ret != 0);
760
761 return 0;
762 }
763
764 static int vmw_framebuffer_dmabuf_unpin(struct vmw_framebuffer *vfb)
765 {
766 struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
767 struct vmw_framebuffer_dmabuf *vfbd =
768 vmw_framebuffer_to_vfbd(&vfb->base);
769
770 if (!vfbd->buffer) {
771 WARN_ON(!vfbd->buffer);
772 return 0;
773 }
774
775 return vmw_dmabuf_from_vram(dev_priv, vfbd->buffer);
776 }
777
778 static int vmw_kms_new_framebuffer_dmabuf(struct vmw_private *dev_priv,
779 struct vmw_dma_buffer *dmabuf,
780 struct vmw_framebuffer **out,
781 const struct drm_mode_fb_cmd
782 *mode_cmd)
783
784 {
785 struct drm_device *dev = dev_priv->dev;
786 struct vmw_framebuffer_dmabuf *vfbd;
787 unsigned int requested_size;
788 int ret;
789
790 requested_size = mode_cmd->height * mode_cmd->pitch;
791 if (unlikely(requested_size > dmabuf->base.num_pages * PAGE_SIZE)) {
792 DRM_ERROR("Screen buffer object size is too small "
793 "for requested mode.\n");
794 return -EINVAL;
795 }
796
797 vfbd = kzalloc(sizeof(*vfbd), GFP_KERNEL);
798 if (!vfbd) {
799 ret = -ENOMEM;
800 goto out_err1;
801 }
802
803 ret = drm_framebuffer_init(dev, &vfbd->base.base,
804 &vmw_framebuffer_dmabuf_funcs);
805 if (ret)
806 goto out_err2;
807
808 if (!vmw_dmabuf_reference(dmabuf)) {
809 DRM_ERROR("failed to reference dmabuf %p\n", dmabuf);
810 goto out_err3;
811 }
812
813 vfbd->base.base.bits_per_pixel = mode_cmd->bpp;
814 vfbd->base.base.pitch = mode_cmd->pitch;
815 vfbd->base.base.depth = mode_cmd->depth;
816 vfbd->base.base.width = mode_cmd->width;
817 vfbd->base.base.height = mode_cmd->height;
818 vfbd->base.pin = vmw_framebuffer_dmabuf_pin;
819 vfbd->base.unpin = vmw_framebuffer_dmabuf_unpin;
820 vfbd->buffer = dmabuf;
821 *out = &vfbd->base;
822
823 return 0;
824
825 out_err3:
826 drm_framebuffer_cleanup(&vfbd->base.base);
827 out_err2:
828 kfree(vfbd);
829 out_err1:
830 return ret;
831 }
832
833 /*
834 * Generic Kernel modesetting functions
835 */
836
837 static struct drm_framebuffer *vmw_kms_fb_create(struct drm_device *dev,
838 struct drm_file *file_priv,
839 struct drm_mode_fb_cmd *mode_cmd)
840 {
841 struct vmw_private *dev_priv = vmw_priv(dev);
842 struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
843 struct vmw_framebuffer *vfb = NULL;
844 struct vmw_surface *surface = NULL;
845 struct vmw_dma_buffer *bo = NULL;
846 u64 required_size;
847 int ret;
848
849 /**
850 * This code should be conditioned on Screen Objects not being used.
851 * If screen objects are used, we can allocate a GMR to hold the
852 * requested framebuffer.
853 */
854
855 required_size = mode_cmd->pitch * mode_cmd->height;
856 if (unlikely(required_size > (u64) dev_priv->vram_size)) {
857 DRM_ERROR("VRAM size is too small for requested mode.\n");
858 return NULL;
859 }
860
861 /**
862 * End conditioned code.
863 */
864
865 ret = vmw_user_surface_lookup_handle(dev_priv, tfile,
866 mode_cmd->handle, &surface);
867 if (ret)
868 goto try_dmabuf;
869
870 if (!surface->scanout)
871 goto err_not_scanout;
872
873 ret = vmw_kms_new_framebuffer_surface(dev_priv, file_priv, surface,
874 &vfb, mode_cmd);
875
876 /* vmw_user_surface_lookup takes one ref so does new_fb */
877 vmw_surface_unreference(&surface);
878
879 if (ret) {
880 DRM_ERROR("failed to create vmw_framebuffer: %i\n", ret);
881 return ERR_PTR(ret);
882 }
883 return &vfb->base;
884
885 try_dmabuf:
886 DRM_INFO("%s: trying buffer\n", __func__);
887
888 ret = vmw_user_dmabuf_lookup(tfile, mode_cmd->handle, &bo);
889 if (ret) {
890 DRM_ERROR("failed to find buffer: %i\n", ret);
891 return ERR_PTR(-ENOENT);
892 }
893
894 ret = vmw_kms_new_framebuffer_dmabuf(dev_priv, bo, &vfb,
895 mode_cmd);
896
897 /* vmw_user_dmabuf_lookup takes one ref so does new_fb */
898 vmw_dmabuf_unreference(&bo);
899
900 if (ret) {
901 DRM_ERROR("failed to create vmw_framebuffer: %i\n", ret);
902 return ERR_PTR(ret);
903 }
904
905 return &vfb->base;
906
907 err_not_scanout:
908 DRM_ERROR("surface not marked as scanout\n");
909 /* vmw_user_surface_lookup takes one ref */
910 vmw_surface_unreference(&surface);
911
912 return ERR_PTR(-EINVAL);
913 }
914
915 static struct drm_mode_config_funcs vmw_kms_funcs = {
916 .fb_create = vmw_kms_fb_create,
917 };
918
919 int vmw_kms_init(struct vmw_private *dev_priv)
920 {
921 struct drm_device *dev = dev_priv->dev;
922 int ret;
923
924 drm_mode_config_init(dev);
925 dev->mode_config.funcs = &vmw_kms_funcs;
926 dev->mode_config.min_width = 1;
927 dev->mode_config.min_height = 1;
928 /* assumed largest fb size */
929 dev->mode_config.max_width = 8192;
930 dev->mode_config.max_height = 8192;
931
932 ret = vmw_kms_init_legacy_display_system(dev_priv);
933
934 return 0;
935 }
936
937 int vmw_kms_close(struct vmw_private *dev_priv)
938 {
939 /*
940 * Docs says we should take the lock before calling this function
941 * but since it destroys encoders and our destructor calls
942 * drm_encoder_cleanup which takes the lock we deadlock.
943 */
944 drm_mode_config_cleanup(dev_priv->dev);
945 vmw_kms_close_legacy_display_system(dev_priv);
946 return 0;
947 }
948
949 int vmw_kms_cursor_bypass_ioctl(struct drm_device *dev, void *data,
950 struct drm_file *file_priv)
951 {
952 struct drm_vmw_cursor_bypass_arg *arg = data;
953 struct vmw_display_unit *du;
954 struct drm_mode_object *obj;
955 struct drm_crtc *crtc;
956 int ret = 0;
957
958
959 mutex_lock(&dev->mode_config.mutex);
960 if (arg->flags & DRM_VMW_CURSOR_BYPASS_ALL) {
961
962 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
963 du = vmw_crtc_to_du(crtc);
964 du->hotspot_x = arg->xhot;
965 du->hotspot_y = arg->yhot;
966 }
967
968 mutex_unlock(&dev->mode_config.mutex);
969 return 0;
970 }
971
972 obj = drm_mode_object_find(dev, arg->crtc_id, DRM_MODE_OBJECT_CRTC);
973 if (!obj) {
974 ret = -EINVAL;
975 goto out;
976 }
977
978 crtc = obj_to_crtc(obj);
979 du = vmw_crtc_to_du(crtc);
980
981 du->hotspot_x = arg->xhot;
982 du->hotspot_y = arg->yhot;
983
984 out:
985 mutex_unlock(&dev->mode_config.mutex);
986
987 return ret;
988 }
989
990 void vmw_kms_write_svga(struct vmw_private *vmw_priv,
991 unsigned width, unsigned height, unsigned pitch,
992 unsigned bbp, unsigned depth)
993 {
994 if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
995 vmw_write(vmw_priv, SVGA_REG_PITCHLOCK, pitch);
996 else if (vmw_fifo_have_pitchlock(vmw_priv))
997 iowrite32(pitch, vmw_priv->mmio_virt + SVGA_FIFO_PITCHLOCK);
998 vmw_write(vmw_priv, SVGA_REG_WIDTH, width);
999 vmw_write(vmw_priv, SVGA_REG_HEIGHT, height);
1000 vmw_write(vmw_priv, SVGA_REG_BITS_PER_PIXEL, bbp);
1001 vmw_write(vmw_priv, SVGA_REG_DEPTH, depth);
1002 vmw_write(vmw_priv, SVGA_REG_RED_MASK, 0x00ff0000);
1003 vmw_write(vmw_priv, SVGA_REG_GREEN_MASK, 0x0000ff00);
1004 vmw_write(vmw_priv, SVGA_REG_BLUE_MASK, 0x000000ff);
1005 }
1006
1007 int vmw_kms_save_vga(struct vmw_private *vmw_priv)
1008 {
1009 struct vmw_vga_topology_state *save;
1010 uint32_t i;
1011
1012 vmw_priv->vga_width = vmw_read(vmw_priv, SVGA_REG_WIDTH);
1013 vmw_priv->vga_height = vmw_read(vmw_priv, SVGA_REG_HEIGHT);
1014 vmw_priv->vga_depth = vmw_read(vmw_priv, SVGA_REG_DEPTH);
1015 vmw_priv->vga_bpp = vmw_read(vmw_priv, SVGA_REG_BITS_PER_PIXEL);
1016 vmw_priv->vga_pseudo = vmw_read(vmw_priv, SVGA_REG_PSEUDOCOLOR);
1017 vmw_priv->vga_red_mask = vmw_read(vmw_priv, SVGA_REG_RED_MASK);
1018 vmw_priv->vga_blue_mask = vmw_read(vmw_priv, SVGA_REG_BLUE_MASK);
1019 vmw_priv->vga_green_mask = vmw_read(vmw_priv, SVGA_REG_GREEN_MASK);
1020 if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1021 vmw_priv->vga_pitchlock =
1022 vmw_read(vmw_priv, SVGA_REG_PITCHLOCK);
1023 else if (vmw_fifo_have_pitchlock(vmw_priv))
1024 vmw_priv->vga_pitchlock = ioread32(vmw_priv->mmio_virt +
1025 SVGA_FIFO_PITCHLOCK);
1026
1027 if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY))
1028 return 0;
1029
1030 vmw_priv->num_displays = vmw_read(vmw_priv,
1031 SVGA_REG_NUM_GUEST_DISPLAYS);
1032
1033 if (vmw_priv->num_displays == 0)
1034 vmw_priv->num_displays = 1;
1035
1036 for (i = 0; i < vmw_priv->num_displays; ++i) {
1037 save = &vmw_priv->vga_save[i];
1038 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, i);
1039 save->primary = vmw_read(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY);
1040 save->pos_x = vmw_read(vmw_priv, SVGA_REG_DISPLAY_POSITION_X);
1041 save->pos_y = vmw_read(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y);
1042 save->width = vmw_read(vmw_priv, SVGA_REG_DISPLAY_WIDTH);
1043 save->height = vmw_read(vmw_priv, SVGA_REG_DISPLAY_HEIGHT);
1044 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
1045 if (i == 0 && vmw_priv->num_displays == 1 &&
1046 save->width == 0 && save->height == 0) {
1047
1048 /*
1049 * It should be fairly safe to assume that these
1050 * values are uninitialized.
1051 */
1052
1053 save->width = vmw_priv->vga_width - save->pos_x;
1054 save->height = vmw_priv->vga_height - save->pos_y;
1055 }
1056 }
1057
1058 return 0;
1059 }
1060
1061 int vmw_kms_restore_vga(struct vmw_private *vmw_priv)
1062 {
1063 struct vmw_vga_topology_state *save;
1064 uint32_t i;
1065
1066 vmw_write(vmw_priv, SVGA_REG_WIDTH, vmw_priv->vga_width);
1067 vmw_write(vmw_priv, SVGA_REG_HEIGHT, vmw_priv->vga_height);
1068 vmw_write(vmw_priv, SVGA_REG_DEPTH, vmw_priv->vga_depth);
1069 vmw_write(vmw_priv, SVGA_REG_BITS_PER_PIXEL, vmw_priv->vga_bpp);
1070 vmw_write(vmw_priv, SVGA_REG_PSEUDOCOLOR, vmw_priv->vga_pseudo);
1071 vmw_write(vmw_priv, SVGA_REG_RED_MASK, vmw_priv->vga_red_mask);
1072 vmw_write(vmw_priv, SVGA_REG_GREEN_MASK, vmw_priv->vga_green_mask);
1073 vmw_write(vmw_priv, SVGA_REG_BLUE_MASK, vmw_priv->vga_blue_mask);
1074 if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
1075 vmw_write(vmw_priv, SVGA_REG_PITCHLOCK,
1076 vmw_priv->vga_pitchlock);
1077 else if (vmw_fifo_have_pitchlock(vmw_priv))
1078 iowrite32(vmw_priv->vga_pitchlock,
1079 vmw_priv->mmio_virt + SVGA_FIFO_PITCHLOCK);
1080
1081 if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY))
1082 return 0;
1083
1084 for (i = 0; i < vmw_priv->num_displays; ++i) {
1085 save = &vmw_priv->vga_save[i];
1086 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, i);
1087 vmw_write(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY, save->primary);
1088 vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_X, save->pos_x);
1089 vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y, save->pos_y);
1090 vmw_write(vmw_priv, SVGA_REG_DISPLAY_WIDTH, save->width);
1091 vmw_write(vmw_priv, SVGA_REG_DISPLAY_HEIGHT, save->height);
1092 vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
1093 }
1094
1095 return 0;
1096 }
1097
1098 int vmw_kms_update_layout_ioctl(struct drm_device *dev, void *data,
1099 struct drm_file *file_priv)
1100 {
1101 struct vmw_private *dev_priv = vmw_priv(dev);
1102 struct drm_vmw_update_layout_arg *arg =
1103 (struct drm_vmw_update_layout_arg *)data;
1104 struct vmw_master *vmaster = vmw_master(file_priv->master);
1105 void __user *user_rects;
1106 struct drm_vmw_rect *rects;
1107 unsigned rects_size;
1108 int ret;
1109
1110 ret = ttm_read_lock(&vmaster->lock, true);
1111 if (unlikely(ret != 0))
1112 return ret;
1113
1114 if (!arg->num_outputs) {
1115 struct drm_vmw_rect def_rect = {0, 0, 800, 600};
1116 vmw_kms_ldu_update_layout(dev_priv, 1, &def_rect);
1117 goto out_unlock;
1118 }
1119
1120 rects_size = arg->num_outputs * sizeof(struct drm_vmw_rect);
1121 rects = kzalloc(rects_size, GFP_KERNEL);
1122 if (unlikely(!rects)) {
1123 ret = -ENOMEM;
1124 goto out_unlock;
1125 }
1126
1127 user_rects = (void __user *)(unsigned long)arg->rects;
1128 ret = copy_from_user(rects, user_rects, rects_size);
1129 if (unlikely(ret != 0)) {
1130 DRM_ERROR("Failed to get rects.\n");
1131 ret = -EFAULT;
1132 goto out_free;
1133 }
1134
1135 vmw_kms_ldu_update_layout(dev_priv, arg->num_outputs, rects);
1136
1137 out_free:
1138 kfree(rects);
1139 out_unlock:
1140 ttm_read_unlock(&vmaster->lock);
1141 return ret;
1142 }
1143
1144 bool vmw_kms_validate_mode_vram(struct vmw_private *dev_priv,
1145 uint32_t pitch,
1146 uint32_t height)
1147 {
1148 return ((u64) pitch * (u64) height) < (u64) dev_priv->vram_size;
1149 }
1150
1151 u32 vmw_get_vblank_counter(struct drm_device *dev, int crtc)
1152 {
1153 return 0;
1154 }
linux-next