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drm/vmwgfx: Fix single framebuffer detection.
[net-next-2.6.git] / drivers / gpu / drm / vmwgfx / vmwgfx_ldu.c
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fb1d9738
JB		 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#define vmw_crtc_to_ldu(x) \
31 container_of(x, struct vmw_legacy_display_unit, base.crtc)
32#define vmw_encoder_to_ldu(x) \
33 container_of(x, struct vmw_legacy_display_unit, base.encoder)
34#define vmw_connector_to_ldu(x) \
35 container_of(x, struct vmw_legacy_display_unit, base.connector)
36
37struct vmw_legacy_display {
38 struct list_head active;
39
40 unsigned num_active;
41
42 struct vmw_framebuffer *fb;
43};
44
45/**
46 * Display unit using the legacy register interface.
47 */
48struct vmw_legacy_display_unit {
49 struct vmw_display_unit base;
50
51 struct list_head active;
52
53 unsigned unit;
54};
55
56static void vmw_ldu_destroy(struct vmw_legacy_display_unit *ldu)
57{
58 list_del_init(&ldu->active);
59 vmw_display_unit_cleanup(&ldu->base);
60 kfree(ldu);
61}
62
63
64/*
65 * Legacy Display Unit CRTC functions
66 */
67
68static void vmw_ldu_crtc_save(struct drm_crtc *crtc)
69{
70}
71
72static void vmw_ldu_crtc_restore(struct drm_crtc *crtc)
73{
74}
75
76static void vmw_ldu_crtc_gamma_set(struct drm_crtc *crtc,
77 u16 *r, u16 *g, u16 *b,
78 uint32_t size)
79{
80}
81
82static void vmw_ldu_crtc_destroy(struct drm_crtc *crtc)
83{
84 vmw_ldu_destroy(vmw_crtc_to_ldu(crtc));
85}
86
87static int vmw_ldu_commit_list(struct vmw_private *dev_priv)
88{
89 struct vmw_legacy_display *lds = dev_priv->ldu_priv;
90 struct vmw_legacy_display_unit *entry;
91 struct drm_crtc *crtc;
92 int i = 0;
93
94 /* to stop the screen from changing size on resize */
95 vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS, 0);
96 for (i = 0; i < lds->num_active; i++) {
97 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, i);
98 vmw_write(dev_priv, SVGA_REG_DISPLAY_IS_PRIMARY, !i);
99 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_X, 0);
100 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_Y, 0);
101 vmw_write(dev_priv, SVGA_REG_DISPLAY_WIDTH, 0);
102 vmw_write(dev_priv, SVGA_REG_DISPLAY_HEIGHT, 0);
103 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
104 }
105
106 /* Now set the mode */
107 vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS, lds->num_active);
108 i = 0;
109 list_for_each_entry(entry, &lds->active, active) {
110 crtc = &entry->base.crtc;
111
112 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, i);
113 vmw_write(dev_priv, SVGA_REG_DISPLAY_IS_PRIMARY, !i);
114 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_X, crtc->x);
115 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_Y, crtc->y);
116 vmw_write(dev_priv, SVGA_REG_DISPLAY_WIDTH, crtc->mode.hdisplay);
117 vmw_write(dev_priv, SVGA_REG_DISPLAY_HEIGHT, crtc->mode.vdisplay);
118 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
119
120 i++;
121 }
122
123 return 0;
124}
125
126static int vmw_ldu_del_active(struct vmw_private *vmw_priv,
127 struct vmw_legacy_display_unit *ldu)
128{
129 struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
130 if (list_empty(&ldu->active))
131 return 0;
132
6a591a96 133 /* Must init otherwise list_empty(&ldu->active) will not work. */
fb1d9738
JB		 134 list_del_init(&ldu->active);
135 if (--(ld->num_active) == 0) {
136 BUG_ON(!ld->fb);
137 if (ld->fb->unpin)
138 ld->fb->unpin(ld->fb);
139 ld->fb = NULL;
140 }
141
142 return 0;
143}
144
145static int vmw_ldu_add_active(struct vmw_private *vmw_priv,
146 struct vmw_legacy_display_unit *ldu,
147 struct vmw_framebuffer *vfb)
148{
149 struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
150 struct vmw_legacy_display_unit *entry;
151 struct list_head *at;
152
153 if (!list_empty(&ldu->active))
154 return 0;
155
156 at = &ld->active;
157 list_for_each_entry(entry, &ld->active, active) {
158 if (entry->unit > ldu->unit)
159 break;
160
161 at = &entry->active;
162 }
163
164 list_add(&ldu->active, at);
165 if (ld->num_active++ == 0) {
166 BUG_ON(ld->fb);
167 if (vfb->pin)
168 vfb->pin(vfb);
169 ld->fb = vfb;
170 }
171
172 return 0;
173}
174
175static int vmw_ldu_crtc_set_config(struct drm_mode_set *set)
176{
177 struct vmw_private *dev_priv;
178 struct vmw_legacy_display_unit *ldu;
179 struct drm_connector *connector;
180 struct drm_display_mode *mode;
181 struct drm_encoder *encoder;
182 struct vmw_framebuffer *vfb;
183 struct drm_framebuffer *fb;
184 struct drm_crtc *crtc;
185
186 if (!set)
187 return -EINVAL;
188
189 if (!set->crtc)
190 return -EINVAL;
191
192 /* get the ldu */
193 crtc = set->crtc;
194 ldu = vmw_crtc_to_ldu(crtc);
195 vfb = set->fb ? vmw_framebuffer_to_vfb(set->fb) : NULL;
196 dev_priv = vmw_priv(crtc->dev);
197
198 if (set->num_connectors > 1) {
199 DRM_ERROR("to many connectors\n");
200 return -EINVAL;
201 }
202
203 if (set->num_connectors == 1 &&
204 set->connectors[0] != &ldu->base.connector) {
205 DRM_ERROR("connector doesn't match %p %p\n",
206 set->connectors[0], &ldu->base.connector);
207 return -EINVAL;
208 }
209
210 /* ldu only supports one fb active at the time */
211 if (dev_priv->ldu_priv->fb && vfb &&
6a591a96
JB		 212 !(dev_priv->ldu_priv->num_active == 1 &&
213 !list_empty(&ldu->active)) &&
fb1d9738
JB		 214 dev_priv->ldu_priv->fb != vfb) {
215 DRM_ERROR("Multiple framebuffers not supported\n");
216 return -EINVAL;
217 }
218
219 /* since they always map one to one these are safe */
220 connector = &ldu->base.connector;
221 encoder = &ldu->base.encoder;
222
223 /* should we turn the crtc off? */
224 if (set->num_connectors == 0 || !set->mode || !set->fb) {
225
226 connector->encoder = NULL;
227 encoder->crtc = NULL;
228 crtc->fb = NULL;
229
230 vmw_ldu_del_active(dev_priv, ldu);
231
232 vmw_ldu_commit_list(dev_priv);
233
234 return 0;
235 }
236
237
238 /* we now know we want to set a mode */
239 mode = set->mode;
240 fb = set->fb;
241
242 if (set->x + mode->hdisplay > fb->width ||
243 set->y + mode->vdisplay > fb->height) {
244 DRM_ERROR("set outside of framebuffer\n");
245 return -EINVAL;
246 }
247
248 vmw_fb_off(dev_priv);
249
250 crtc->fb = fb;
251 encoder->crtc = crtc;
252 connector->encoder = encoder;
253 crtc->x = set->x;
254 crtc->y = set->y;
255 crtc->mode = *mode;
256
257 vmw_ldu_add_active(dev_priv, ldu, vfb);
258
259 vmw_ldu_commit_list(dev_priv);
260
261 return 0;
262}
263
264static struct drm_crtc_funcs vmw_legacy_crtc_funcs = {
265 .save = vmw_ldu_crtc_save,
266 .restore = vmw_ldu_crtc_restore,
267 .cursor_set = vmw_du_crtc_cursor_set,
268 .cursor_move = vmw_du_crtc_cursor_move,
269 .gamma_set = vmw_ldu_crtc_gamma_set,
270 .destroy = vmw_ldu_crtc_destroy,
271 .set_config = vmw_ldu_crtc_set_config,
272};
273
274/*
275 * Legacy Display Unit encoder functions
276 */
277
278static void vmw_ldu_encoder_destroy(struct drm_encoder *encoder)
279{
280 vmw_ldu_destroy(vmw_encoder_to_ldu(encoder));
281}
282
283static struct drm_encoder_funcs vmw_legacy_encoder_funcs = {
284 .destroy = vmw_ldu_encoder_destroy,
285};
286
287/*
288 * Legacy Display Unit connector functions
289 */
290
291static void vmw_ldu_connector_dpms(struct drm_connector *connector, int mode)
292{
293}
294
295static void vmw_ldu_connector_save(struct drm_connector *connector)
296{
297}
298
299static void vmw_ldu_connector_restore(struct drm_connector *connector)
300{
301}
302
303static enum drm_connector_status
304 vmw_ldu_connector_detect(struct drm_connector *connector)
305{
306 /* XXX vmwctrl should control connection status */
307 if (vmw_connector_to_ldu(connector)->base.unit == 0)
308 return connector_status_connected;
309 return connector_status_disconnected;
310}
311
312static struct drm_display_mode vmw_ldu_connector_builtin[] = {
313 /* 640x480@60Hz */
314 { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25175, 640, 656,
315 752, 800, 0, 480, 489, 492, 525, 0,
316 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
317 /* 800x600@60Hz */
318 { DRM_MODE("800x600",
319 DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
320 40000, 800, 840, 968, 1056, 0, 600, 601, 605, 628,
321 0, DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
322 /* 1024x768@60Hz */
323 { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 65000, 1024, 1048,
324 1184, 1344, 0, 768, 771, 777, 806, 0,
325 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
326 /* 1152x864@75Hz */
327 { DRM_MODE("1152x864", DRM_MODE_TYPE_DRIVER, 108000, 1152, 1216,
328 1344, 1600, 0, 864, 865, 868, 900, 0,
329 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
330 /* 1280x768@60Hz */
331 { DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 79500, 1280, 1344,
332 1472, 1664, 0, 768, 771, 778, 798, 0,
333 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
334 /* 1280x800@60Hz */
335 { DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 83500, 1280, 1352,
336 1480, 1680, 0, 800, 803, 809, 831, 0,
337 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
338 /* 1280x960@60Hz */
339 { DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1376,
340 1488, 1800, 0, 960, 961, 964, 1000, 0,
341 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
342 /* 1280x1024@60Hz */
343 { DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1328,
344 1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
345 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
346 /* 1360x768@60Hz */
347 { DRM_MODE("1360x768", DRM_MODE_TYPE_DRIVER, 85500, 1360, 1424,
348 1536, 1792, 0, 768, 771, 777, 795, 0,
349 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
350 /* 1440x1050@60Hz */
351 { DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 121750, 1400, 1488,
352 1632, 1864, 0, 1050, 1053, 1057, 1089, 0,
353 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
354 /* 1440x900@60Hz */
355 { DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 106500, 1440, 1520,
356 1672, 1904, 0, 900, 903, 909, 934, 0,
357 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
358 /* 1600x1200@60Hz */
359 { DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 162000, 1600, 1664,
360 1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
361 DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
362 /* 1680x1050@60Hz */
363 { DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 146250, 1680, 1784,
364 1960, 2240, 0, 1050, 1053, 1059, 1089, 0,
365 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
366 /* 1792x1344@60Hz */
367 { DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 204750, 1792, 1920,
368 2120, 2448, 0, 1344, 1345, 1348, 1394, 0,
369 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
370 /* 1853x1392@60Hz */
371 { DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 218250, 1856, 1952,
372 2176, 2528, 0, 1392, 1393, 1396, 1439, 0,
373 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
374 /* 1920x1200@60Hz */
375 { DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 193250, 1920, 2056,
376 2256, 2592, 0, 1200, 1203, 1209, 1245, 0,
377 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
378 /* 1920x1440@60Hz */
379 { DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 234000, 1920, 2048,
380 2256, 2600, 0, 1440, 1441, 1444, 1500, 0,
381 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
382 /* 2560x1600@60Hz */
383 { DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 348500, 2560, 2752,
384 3032, 3504, 0, 1600, 1603, 1609, 1658, 0,
385 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
386 /* Terminate */
387 { DRM_MODE("", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) },
388};
389
390static int vmw_ldu_connector_fill_modes(struct drm_connector *connector,
391 uint32_t max_width, uint32_t max_height)
392{
393 struct drm_device *dev = connector->dev;
394 struct drm_display_mode *mode = NULL;
395 int i;
396
397 for (i = 0; vmw_ldu_connector_builtin[i].type != 0; i++) {
398 if (vmw_ldu_connector_builtin[i].hdisplay > max_width ||
399 vmw_ldu_connector_builtin[i].vdisplay > max_height)
400 continue;
401
402 mode = drm_mode_duplicate(dev, &vmw_ldu_connector_builtin[i]);
403 if (!mode)
404 return 0;
405 mode->vrefresh = drm_mode_vrefresh(mode);
406
407 drm_mode_probed_add(connector, mode);
408 }
409
410 drm_mode_connector_list_update(connector);
411
412 return 1;
413}
414
415static int vmw_ldu_connector_set_property(struct drm_connector *connector,
416 struct drm_property *property,
417 uint64_t val)
418{
419 return 0;
420}
421
422static void vmw_ldu_connector_destroy(struct drm_connector *connector)
423{
424 vmw_ldu_destroy(vmw_connector_to_ldu(connector));
425}
426
427static struct drm_connector_funcs vmw_legacy_connector_funcs = {
428 .dpms = vmw_ldu_connector_dpms,
429 .save = vmw_ldu_connector_save,
430 .restore = vmw_ldu_connector_restore,
431 .detect = vmw_ldu_connector_detect,
432 .fill_modes = vmw_ldu_connector_fill_modes,
433 .set_property = vmw_ldu_connector_set_property,
434 .destroy = vmw_ldu_connector_destroy,
435};
436
437static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit)
438{
439 struct vmw_legacy_display_unit *ldu;
440 struct drm_device *dev = dev_priv->dev;
441 struct drm_connector *connector;
442 struct drm_encoder *encoder;
443 struct drm_crtc *crtc;
444
445 ldu = kzalloc(sizeof(*ldu), GFP_KERNEL);
446 if (!ldu)
447 return -ENOMEM;
448
449 ldu->unit = unit;
450 crtc = &ldu->base.crtc;
451 encoder = &ldu->base.encoder;
452 connector = &ldu->base.connector;
453
454 drm_connector_init(dev, connector, &vmw_legacy_connector_funcs,
455 DRM_MODE_CONNECTOR_LVDS);
456 /* Initial status */
457 if (unit == 0)
458 connector->status = connector_status_connected;
459 else
460 connector->status = connector_status_disconnected;
461
462 drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs,
463 DRM_MODE_ENCODER_LVDS);
464 drm_mode_connector_attach_encoder(connector, encoder);
465 encoder->possible_crtcs = (1 << unit);
466 encoder->possible_clones = 0;
467
468 INIT_LIST_HEAD(&ldu->active);
469
470 drm_crtc_init(dev, crtc, &vmw_legacy_crtc_funcs);
471
472 drm_connector_attach_property(connector,
473 dev->mode_config.dirty_info_property,
474 1);
475
476 return 0;
477}
478
479int vmw_kms_init_legacy_display_system(struct vmw_private *dev_priv)
480{
481 if (dev_priv->ldu_priv) {
482 DRM_INFO("ldu system already on\n");
483 return -EINVAL;
484 }
485
486 dev_priv->ldu_priv = kmalloc(GFP_KERNEL, sizeof(*dev_priv->ldu_priv));
487
488 if (!dev_priv->ldu_priv)
489 return -ENOMEM;
490
491 INIT_LIST_HEAD(&dev_priv->ldu_priv->active);
492 dev_priv->ldu_priv->num_active = 0;
493 dev_priv->ldu_priv->fb = NULL;
494
495 drm_mode_create_dirty_info_property(dev_priv->dev);
496
497 vmw_ldu_init(dev_priv, 0);
498 vmw_ldu_init(dev_priv, 1);
499 vmw_ldu_init(dev_priv, 2);
500 vmw_ldu_init(dev_priv, 3);
501 vmw_ldu_init(dev_priv, 4);
502 vmw_ldu_init(dev_priv, 5);
503 vmw_ldu_init(dev_priv, 6);
504 vmw_ldu_init(dev_priv, 7);
505
506 return 0;
507}
508
509int vmw_kms_close_legacy_display_system(struct vmw_private *dev_priv)
510{
511 if (!dev_priv->ldu_priv)
512 return -ENOSYS;
513
514 BUG_ON(!list_empty(&dev_priv->ldu_priv->active));
515
516 kfree(dev_priv->ldu_priv);
517
518 return 0;
519}
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