drm/vmwgfx: Reserve first part of VRAM for framebuffer.
[linux-2.6.git] / drivers / gpu / drm / vmwgfx / vmwgfx_kms.c
1 /**************************************************************************
2  *
3  * Copyright © 2009 VMware, Inc., Palo Alto, CA., USA
4  * All Rights Reserved.
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a
7  * copy of this software and associated documentation files (the
8  * "Software"), to deal in the Software without restriction, including
9  * without limitation the rights to use, copy, modify, merge, publish,
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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 programer, cant handle wierd 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 };
336
337 void vmw_framebuffer_surface_destroy(struct drm_framebuffer *framebuffer)
338 {
339         struct vmw_framebuffer_surface *vfb =
340                 vmw_framebuffer_to_vfbs(framebuffer);
341
342         cancel_delayed_work_sync(&vfb->d_work);
343         drm_framebuffer_cleanup(framebuffer);
344         vmw_surface_unreference(&vfb->surface);
345
346         kfree(framebuffer);
347 }
348
349 static void vmw_framebuffer_present_fs_callback(struct work_struct *work)
350 {
351         struct delayed_work *d_work =
352                 container_of(work, struct delayed_work, work);
353         struct vmw_framebuffer_surface *vfbs =
354                 container_of(d_work, struct vmw_framebuffer_surface, d_work);
355         struct vmw_surface *surf = vfbs->surface;
356         struct drm_framebuffer *framebuffer = &vfbs->base.base;
357         struct vmw_private *dev_priv = vmw_priv(framebuffer->dev);
358
359         struct {
360                 SVGA3dCmdHeader header;
361                 SVGA3dCmdPresent body;
362                 SVGA3dCopyRect cr;
363         } *cmd;
364
365         mutex_lock(&vfbs->work_lock);
366         if (!vfbs->present_fs)
367                 goto out_unlock;
368
369         cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
370         if (unlikely(cmd == NULL))
371                 goto out_resched;
372
373         cmd->header.id = cpu_to_le32(SVGA_3D_CMD_PRESENT);
374         cmd->header.size = cpu_to_le32(sizeof(cmd->body) + sizeof(cmd->cr));
375         cmd->body.sid = cpu_to_le32(surf->res.id);
376         cmd->cr.x = cpu_to_le32(0);
377         cmd->cr.y = cpu_to_le32(0);
378         cmd->cr.srcx = cmd->cr.x;
379         cmd->cr.srcy = cmd->cr.y;
380         cmd->cr.w = cpu_to_le32(framebuffer->width);
381         cmd->cr.h = cpu_to_le32(framebuffer->height);
382         vfbs->present_fs = false;
383         vmw_fifo_commit(dev_priv, sizeof(*cmd));
384 out_resched:
385         /**
386          * Will not re-add if already pending.
387          */
388         schedule_delayed_work(&vfbs->d_work, VMWGFX_PRESENT_RATE);
389 out_unlock:
390         mutex_unlock(&vfbs->work_lock);
391 }
392
393
394 int vmw_framebuffer_surface_dirty(struct drm_framebuffer *framebuffer,
395                                   unsigned flags, unsigned color,
396                                   struct drm_clip_rect *clips,
397                                   unsigned num_clips)
398 {
399         struct vmw_private *dev_priv = vmw_priv(framebuffer->dev);
400         struct vmw_framebuffer_surface *vfbs =
401                 vmw_framebuffer_to_vfbs(framebuffer);
402         struct vmw_surface *surf = vfbs->surface;
403         struct drm_clip_rect norect;
404         SVGA3dCopyRect *cr;
405         int i, inc = 1;
406
407         struct {
408                 SVGA3dCmdHeader header;
409                 SVGA3dCmdPresent body;
410                 SVGA3dCopyRect cr;
411         } *cmd;
412
413         if (!num_clips ||
414             !(dev_priv->fifo.capabilities &
415               SVGA_FIFO_CAP_SCREEN_OBJECT)) {
416                 int ret;
417
418                 mutex_lock(&vfbs->work_lock);
419                 vfbs->present_fs = true;
420                 ret = schedule_delayed_work(&vfbs->d_work, VMWGFX_PRESENT_RATE);
421                 mutex_unlock(&vfbs->work_lock);
422                 if (ret) {
423                         /**
424                          * No work pending, Force immediate present.
425                          */
426                         vmw_framebuffer_present_fs_callback(&vfbs->d_work.work);
427                 }
428                 return 0;
429         }
430
431         if (!num_clips) {
432                 num_clips = 1;
433                 clips = &norect;
434                 norect.x1 = norect.y1 = 0;
435                 norect.x2 = framebuffer->width;
436                 norect.y2 = framebuffer->height;
437         } else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
438                 num_clips /= 2;
439                 inc = 2; /* skip source rects */
440         }
441
442         cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd) + (num_clips - 1) * sizeof(cmd->cr));
443         if (unlikely(cmd == NULL)) {
444                 DRM_ERROR("Fifo reserve failed.\n");
445                 return -ENOMEM;
446         }
447
448         memset(cmd, 0, sizeof(*cmd));
449
450         cmd->header.id = cpu_to_le32(SVGA_3D_CMD_PRESENT);
451         cmd->header.size = cpu_to_le32(sizeof(cmd->body) + num_clips * sizeof(cmd->cr));
452         cmd->body.sid = cpu_to_le32(surf->res.id);
453
454         for (i = 0, cr = &cmd->cr; i < num_clips; i++, cr++, clips += inc) {
455                 cr->x = cpu_to_le16(clips->x1);
456                 cr->y = cpu_to_le16(clips->y1);
457                 cr->srcx = cr->x;
458                 cr->srcy = cr->y;
459                 cr->w = cpu_to_le16(clips->x2 - clips->x1);
460                 cr->h = cpu_to_le16(clips->y2 - clips->y1);
461         }
462
463         vmw_fifo_commit(dev_priv, sizeof(*cmd) + (num_clips - 1) * sizeof(cmd->cr));
464
465         return 0;
466 }
467
468 static struct drm_framebuffer_funcs vmw_framebuffer_surface_funcs = {
469         .destroy = vmw_framebuffer_surface_destroy,
470         .dirty = vmw_framebuffer_surface_dirty,
471         .create_handle = vmw_framebuffer_create_handle,
472 };
473
474 int vmw_kms_new_framebuffer_surface(struct vmw_private *dev_priv,
475                                     struct vmw_surface *surface,
476                                     struct vmw_framebuffer **out,
477                                     unsigned width, unsigned height)
478
479 {
480         struct drm_device *dev = dev_priv->dev;
481         struct vmw_framebuffer_surface *vfbs;
482         int ret;
483
484         vfbs = kzalloc(sizeof(*vfbs), GFP_KERNEL);
485         if (!vfbs) {
486                 ret = -ENOMEM;
487                 goto out_err1;
488         }
489
490         ret = drm_framebuffer_init(dev, &vfbs->base.base,
491                                    &vmw_framebuffer_surface_funcs);
492         if (ret)
493                 goto out_err2;
494
495         if (!vmw_surface_reference(surface)) {
496                 DRM_ERROR("failed to reference surface %p\n", surface);
497                 goto out_err3;
498         }
499
500         /* XXX get the first 3 from the surface info */
501         vfbs->base.base.bits_per_pixel = 32;
502         vfbs->base.base.pitch = width * 32 / 4;
503         vfbs->base.base.depth = 24;
504         vfbs->base.base.width = width;
505         vfbs->base.base.height = height;
506         vfbs->base.pin = &vmw_surface_dmabuf_pin;
507         vfbs->base.unpin = &vmw_surface_dmabuf_unpin;
508         vfbs->surface = surface;
509         mutex_init(&vfbs->work_lock);
510         INIT_DELAYED_WORK(&vfbs->d_work, &vmw_framebuffer_present_fs_callback);
511         *out = &vfbs->base;
512
513         return 0;
514
515 out_err3:
516         drm_framebuffer_cleanup(&vfbs->base.base);
517 out_err2:
518         kfree(vfbs);
519 out_err1:
520         return ret;
521 }
522
523 /*
524  * Dmabuf framebuffer code
525  */
526
527 #define vmw_framebuffer_to_vfbd(x) \
528         container_of(x, struct vmw_framebuffer_dmabuf, base.base)
529
530 struct vmw_framebuffer_dmabuf {
531         struct vmw_framebuffer base;
532         struct vmw_dma_buffer *buffer;
533 };
534
535 void vmw_framebuffer_dmabuf_destroy(struct drm_framebuffer *framebuffer)
536 {
537         struct vmw_framebuffer_dmabuf *vfbd =
538                 vmw_framebuffer_to_vfbd(framebuffer);
539
540         drm_framebuffer_cleanup(framebuffer);
541         vmw_dmabuf_unreference(&vfbd->buffer);
542
543         kfree(vfbd);
544 }
545
546 int vmw_framebuffer_dmabuf_dirty(struct drm_framebuffer *framebuffer,
547                                  unsigned flags, unsigned color,
548                                  struct drm_clip_rect *clips,
549                                  unsigned num_clips)
550 {
551         struct vmw_private *dev_priv = vmw_priv(framebuffer->dev);
552         struct drm_clip_rect norect;
553         struct {
554                 uint32_t header;
555                 SVGAFifoCmdUpdate body;
556         } *cmd;
557         int i, increment = 1;
558
559         if (!num_clips) {
560                 num_clips = 1;
561                 clips = &norect;
562                 norect.x1 = norect.y1 = 0;
563                 norect.x2 = framebuffer->width;
564                 norect.y2 = framebuffer->height;
565         } else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
566                 num_clips /= 2;
567                 increment = 2;
568         }
569
570         cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd) * num_clips);
571         if (unlikely(cmd == NULL)) {
572                 DRM_ERROR("Fifo reserve failed.\n");
573                 return -ENOMEM;
574         }
575
576         for (i = 0; i < num_clips; i++, clips += increment) {
577                 cmd[i].header = cpu_to_le32(SVGA_CMD_UPDATE);
578                 cmd[i].body.x = cpu_to_le32(clips->x1);
579                 cmd[i].body.y = cpu_to_le32(clips->y1);
580                 cmd[i].body.width = cpu_to_le32(clips->x2 - clips->x1);
581                 cmd[i].body.height = cpu_to_le32(clips->y2 - clips->y1);
582         }
583
584         vmw_fifo_commit(dev_priv, sizeof(*cmd) * num_clips);
585
586         return 0;
587 }
588
589 static struct drm_framebuffer_funcs vmw_framebuffer_dmabuf_funcs = {
590         .destroy = vmw_framebuffer_dmabuf_destroy,
591         .dirty = vmw_framebuffer_dmabuf_dirty,
592         .create_handle = vmw_framebuffer_create_handle,
593 };
594
595 static int vmw_surface_dmabuf_pin(struct vmw_framebuffer *vfb)
596 {
597         struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
598         struct vmw_framebuffer_surface *vfbs =
599                 vmw_framebuffer_to_vfbs(&vfb->base);
600         unsigned long size = vfbs->base.base.pitch * vfbs->base.base.height;
601         int ret;
602
603         vfbs->buffer = kzalloc(sizeof(*vfbs->buffer), GFP_KERNEL);
604         if (unlikely(vfbs->buffer == NULL))
605                 return -ENOMEM;
606
607         vmw_overlay_pause_all(dev_priv);
608         ret = vmw_dmabuf_init(dev_priv, vfbs->buffer, size,
609                                &vmw_vram_ne_placement,
610                                false, &vmw_dmabuf_bo_free);
611         vmw_overlay_resume_all(dev_priv);
612
613         return ret;
614 }
615
616 static int vmw_surface_dmabuf_unpin(struct vmw_framebuffer *vfb)
617 {
618         struct ttm_buffer_object *bo;
619         struct vmw_framebuffer_surface *vfbs =
620                 vmw_framebuffer_to_vfbs(&vfb->base);
621
622         bo = &vfbs->buffer->base;
623         ttm_bo_unref(&bo);
624         vfbs->buffer = NULL;
625
626         return 0;
627 }
628
629 static int vmw_framebuffer_dmabuf_pin(struct vmw_framebuffer *vfb)
630 {
631         struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
632         struct vmw_framebuffer_dmabuf *vfbd =
633                 vmw_framebuffer_to_vfbd(&vfb->base);
634         int ret;
635
636
637         vmw_overlay_pause_all(dev_priv);
638
639         ret = vmw_dmabuf_to_start_of_vram(dev_priv, vfbd->buffer);
640
641         vmw_overlay_resume_all(dev_priv);
642
643         return 0;
644 }
645
646 static int vmw_framebuffer_dmabuf_unpin(struct vmw_framebuffer *vfb)
647 {
648         struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
649         struct vmw_framebuffer_dmabuf *vfbd =
650                 vmw_framebuffer_to_vfbd(&vfb->base);
651
652         if (!vfbd->buffer) {
653                 WARN_ON(!vfbd->buffer);
654                 return 0;
655         }
656
657         return vmw_dmabuf_from_vram(dev_priv, vfbd->buffer);
658 }
659
660 int vmw_kms_new_framebuffer_dmabuf(struct vmw_private *dev_priv,
661                                    struct vmw_dma_buffer *dmabuf,
662                                    struct vmw_framebuffer **out,
663                                    unsigned width, unsigned height)
664
665 {
666         struct drm_device *dev = dev_priv->dev;
667         struct vmw_framebuffer_dmabuf *vfbd;
668         int ret;
669
670         vfbd = kzalloc(sizeof(*vfbd), GFP_KERNEL);
671         if (!vfbd) {
672                 ret = -ENOMEM;
673                 goto out_err1;
674         }
675
676         ret = drm_framebuffer_init(dev, &vfbd->base.base,
677                                    &vmw_framebuffer_dmabuf_funcs);
678         if (ret)
679                 goto out_err2;
680
681         if (!vmw_dmabuf_reference(dmabuf)) {
682                 DRM_ERROR("failed to reference dmabuf %p\n", dmabuf);
683                 goto out_err3;
684         }
685
686         /* XXX get the first 3 from the surface info */
687         vfbd->base.base.bits_per_pixel = 32;
688         vfbd->base.base.pitch = width * vfbd->base.base.bits_per_pixel / 8;
689         vfbd->base.base.depth = 24;
690         vfbd->base.base.width = width;
691         vfbd->base.base.height = height;
692         vfbd->base.pin = vmw_framebuffer_dmabuf_pin;
693         vfbd->base.unpin = vmw_framebuffer_dmabuf_unpin;
694         vfbd->buffer = dmabuf;
695         *out = &vfbd->base;
696
697         return 0;
698
699 out_err3:
700         drm_framebuffer_cleanup(&vfbd->base.base);
701 out_err2:
702         kfree(vfbd);
703 out_err1:
704         return ret;
705 }
706
707 /*
708  * Generic Kernel modesetting functions
709  */
710
711 static struct drm_framebuffer *vmw_kms_fb_create(struct drm_device *dev,
712                                                  struct drm_file *file_priv,
713                                                  struct drm_mode_fb_cmd *mode_cmd)
714 {
715         struct vmw_private *dev_priv = vmw_priv(dev);
716         struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
717         struct vmw_framebuffer *vfb = NULL;
718         struct vmw_surface *surface = NULL;
719         struct vmw_dma_buffer *bo = NULL;
720         int ret;
721
722         ret = vmw_user_surface_lookup_handle(dev_priv, tfile,
723                                              mode_cmd->handle, &surface);
724         if (ret)
725                 goto try_dmabuf;
726
727         if (!surface->scanout)
728                 goto err_not_scanout;
729
730         ret = vmw_kms_new_framebuffer_surface(dev_priv, surface, &vfb,
731                                               mode_cmd->width, mode_cmd->height);
732
733         /* vmw_user_surface_lookup takes one ref so does new_fb */
734         vmw_surface_unreference(&surface);
735
736         if (ret) {
737                 DRM_ERROR("failed to create vmw_framebuffer: %i\n", ret);
738                 return NULL;
739         }
740         return &vfb->base;
741
742 try_dmabuf:
743         DRM_INFO("%s: trying buffer\n", __func__);
744
745         ret = vmw_user_dmabuf_lookup(tfile, mode_cmd->handle, &bo);
746         if (ret) {
747                 DRM_ERROR("failed to find buffer: %i\n", ret);
748                 return NULL;
749         }
750
751         ret = vmw_kms_new_framebuffer_dmabuf(dev_priv, bo, &vfb,
752                                              mode_cmd->width, mode_cmd->height);
753
754         /* vmw_user_dmabuf_lookup takes one ref so does new_fb */
755         vmw_dmabuf_unreference(&bo);
756
757         if (ret) {
758                 DRM_ERROR("failed to create vmw_framebuffer: %i\n", ret);
759                 return NULL;
760         }
761
762         return &vfb->base;
763
764 err_not_scanout:
765         DRM_ERROR("surface not marked as scanout\n");
766         /* vmw_user_surface_lookup takes one ref */
767         vmw_surface_unreference(&surface);
768
769         return NULL;
770 }
771
772 static struct drm_mode_config_funcs vmw_kms_funcs = {
773         .fb_create = vmw_kms_fb_create,
774 };
775
776 int vmw_kms_init(struct vmw_private *dev_priv)
777 {
778         struct drm_device *dev = dev_priv->dev;
779         int ret;
780
781         drm_mode_config_init(dev);
782         dev->mode_config.funcs = &vmw_kms_funcs;
783         dev->mode_config.min_width = 1;
784         dev->mode_config.min_height = 1;
785         /* assumed largest fb size */
786         dev->mode_config.max_width = 8192;
787         dev->mode_config.max_height = 8192;
788
789         ret = vmw_kms_init_legacy_display_system(dev_priv);
790
791         return 0;
792 }
793
794 int vmw_kms_close(struct vmw_private *dev_priv)
795 {
796         /*
797          * Docs says we should take the lock before calling this function
798          * but since it destroys encoders and our destructor calls
799          * drm_encoder_cleanup which takes the lock we deadlock.
800          */
801         drm_mode_config_cleanup(dev_priv->dev);
802         vmw_kms_close_legacy_display_system(dev_priv);
803         return 0;
804 }
805
806 int vmw_kms_cursor_bypass_ioctl(struct drm_device *dev, void *data,
807                                 struct drm_file *file_priv)
808 {
809         struct drm_vmw_cursor_bypass_arg *arg = data;
810         struct vmw_display_unit *du;
811         struct drm_mode_object *obj;
812         struct drm_crtc *crtc;
813         int ret = 0;
814
815
816         mutex_lock(&dev->mode_config.mutex);
817         if (arg->flags & DRM_VMW_CURSOR_BYPASS_ALL) {
818
819                 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
820                         du = vmw_crtc_to_du(crtc);
821                         du->hotspot_x = arg->xhot;
822                         du->hotspot_y = arg->yhot;
823                 }
824
825                 mutex_unlock(&dev->mode_config.mutex);
826                 return 0;
827         }
828
829         obj = drm_mode_object_find(dev, arg->crtc_id, DRM_MODE_OBJECT_CRTC);
830         if (!obj) {
831                 ret = -EINVAL;
832                 goto out;
833         }
834
835         crtc = obj_to_crtc(obj);
836         du = vmw_crtc_to_du(crtc);
837
838         du->hotspot_x = arg->xhot;
839         du->hotspot_y = arg->yhot;
840
841 out:
842         mutex_unlock(&dev->mode_config.mutex);
843
844         return ret;
845 }
846
847 void vmw_kms_write_svga(struct vmw_private *vmw_priv,
848                         unsigned width, unsigned height, unsigned pitch,
849                         unsigned bbp, unsigned depth)
850 {
851         if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
852                 vmw_write(vmw_priv, SVGA_REG_PITCHLOCK, pitch);
853         else if (vmw_fifo_have_pitchlock(vmw_priv))
854                 iowrite32(pitch, vmw_priv->mmio_virt + SVGA_FIFO_PITCHLOCK);
855         vmw_write(vmw_priv, SVGA_REG_WIDTH, width);
856         vmw_write(vmw_priv, SVGA_REG_HEIGHT, height);
857         vmw_write(vmw_priv, SVGA_REG_BITS_PER_PIXEL, bbp);
858         vmw_write(vmw_priv, SVGA_REG_DEPTH, depth);
859         vmw_write(vmw_priv, SVGA_REG_RED_MASK, 0x00ff0000);
860         vmw_write(vmw_priv, SVGA_REG_GREEN_MASK, 0x0000ff00);
861         vmw_write(vmw_priv, SVGA_REG_BLUE_MASK, 0x000000ff);
862 }
863
864 int vmw_kms_save_vga(struct vmw_private *vmw_priv)
865 {
866         vmw_priv->vga_width = vmw_read(vmw_priv, SVGA_REG_WIDTH);
867         vmw_priv->vga_height = vmw_read(vmw_priv, SVGA_REG_HEIGHT);
868         vmw_priv->vga_bpp = vmw_read(vmw_priv, SVGA_REG_BITS_PER_PIXEL);
869         vmw_priv->vga_depth = vmw_read(vmw_priv, SVGA_REG_DEPTH);
870         vmw_priv->vga_pseudo = vmw_read(vmw_priv, SVGA_REG_PSEUDOCOLOR);
871         vmw_priv->vga_red_mask = vmw_read(vmw_priv, SVGA_REG_RED_MASK);
872         vmw_priv->vga_green_mask = vmw_read(vmw_priv, SVGA_REG_GREEN_MASK);
873         vmw_priv->vga_blue_mask = vmw_read(vmw_priv, SVGA_REG_BLUE_MASK);
874         if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
875                 vmw_priv->vga_pitchlock =
876                         vmw_read(vmw_priv, SVGA_REG_PITCHLOCK);
877         else if (vmw_fifo_have_pitchlock(vmw_priv))
878                 vmw_priv->vga_pitchlock =
879                         ioread32(vmw_priv->mmio_virt + SVGA_FIFO_PITCHLOCK);
880
881         return 0;
882 }
883
884 int vmw_kms_restore_vga(struct vmw_private *vmw_priv)
885 {
886         vmw_write(vmw_priv, SVGA_REG_WIDTH, vmw_priv->vga_width);
887         vmw_write(vmw_priv, SVGA_REG_HEIGHT, vmw_priv->vga_height);
888         vmw_write(vmw_priv, SVGA_REG_BITS_PER_PIXEL, vmw_priv->vga_bpp);
889         vmw_write(vmw_priv, SVGA_REG_DEPTH, vmw_priv->vga_depth);
890         vmw_write(vmw_priv, SVGA_REG_PSEUDOCOLOR, vmw_priv->vga_pseudo);
891         vmw_write(vmw_priv, SVGA_REG_RED_MASK, vmw_priv->vga_red_mask);
892         vmw_write(vmw_priv, SVGA_REG_GREEN_MASK, vmw_priv->vga_green_mask);
893         vmw_write(vmw_priv, SVGA_REG_BLUE_MASK, vmw_priv->vga_blue_mask);
894         if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
895                 vmw_write(vmw_priv, SVGA_REG_PITCHLOCK,
896                           vmw_priv->vga_pitchlock);
897         else if (vmw_fifo_have_pitchlock(vmw_priv))
898                 iowrite32(vmw_priv->vga_pitchlock,
899                           vmw_priv->mmio_virt + SVGA_FIFO_PITCHLOCK);
900
901         return 0;
902 }