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
31 #define vmw_crtc_to_ldu(x) \
32 container_of(x, struct vmw_legacy_display_unit, base.crtc)
33 #define vmw_encoder_to_ldu(x) \
34 container_of(x, struct vmw_legacy_display_unit, base.encoder)
35 #define vmw_connector_to_ldu(x) \
36 container_of(x, struct vmw_legacy_display_unit, base.connector)
37
38 struct vmw_legacy_display {
39 struct list_head active;
40
41 unsigned num_active;
42 unsigned last_num_active;
43
44 struct vmw_framebuffer *fb;
45 };
46
47 /**
48 * Display unit using the legacy register interface.
49 */
50 struct vmw_legacy_display_unit {
51 struct vmw_display_unit base;
52
53 struct list_head active;
54 };
55
vmw_ldu_destroy(struct vmw_legacy_display_unit * ldu)56 static 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
vmw_ldu_crtc_destroy(struct drm_crtc * crtc)68 static void vmw_ldu_crtc_destroy(struct drm_crtc *crtc)
69 {
70 vmw_ldu_destroy(vmw_crtc_to_ldu(crtc));
71 }
72
vmw_ldu_commit_list(struct vmw_private * dev_priv)73 static int vmw_ldu_commit_list(struct vmw_private *dev_priv)
74 {
75 struct vmw_legacy_display *lds = dev_priv->ldu_priv;
76 struct vmw_legacy_display_unit *entry;
77 struct vmw_display_unit *du = NULL;
78 struct drm_framebuffer *fb = NULL;
79 struct drm_crtc *crtc = NULL;
80 int i = 0, ret;
81
82 /* If there is no display topology the host just assumes
83 * that the guest will set the same layout as the host.
84 */
85 if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY)) {
86 int w = 0, h = 0;
87 list_for_each_entry(entry, &lds->active, active) {
88 crtc = &entry->base.crtc;
89 w = max(w, crtc->x + crtc->mode.hdisplay);
90 h = max(h, crtc->y + crtc->mode.vdisplay);
91 i++;
92 }
93
94 if (crtc == NULL)
95 return 0;
96 fb = entry->base.crtc.primary->fb;
97
98 return vmw_kms_write_svga(dev_priv, w, h, fb->pitches[0],
99 fb->bits_per_pixel, fb->depth);
100 }
101
102 if (!list_empty(&lds->active)) {
103 entry = list_entry(lds->active.next, typeof(*entry), active);
104 fb = entry->base.crtc.primary->fb;
105
106 vmw_kms_write_svga(dev_priv, fb->width, fb->height, fb->pitches[0],
107 fb->bits_per_pixel, fb->depth);
108 }
109
110 /* Make sure we always show something. */
111 vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS,
112 lds->num_active ? lds->num_active : 1);
113
114 i = 0;
115 list_for_each_entry(entry, &lds->active, active) {
116 crtc = &entry->base.crtc;
117
118 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, i);
119 vmw_write(dev_priv, SVGA_REG_DISPLAY_IS_PRIMARY, !i);
120 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_X, crtc->x);
121 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_Y, crtc->y);
122 vmw_write(dev_priv, SVGA_REG_DISPLAY_WIDTH, crtc->mode.hdisplay);
123 vmw_write(dev_priv, SVGA_REG_DISPLAY_HEIGHT, crtc->mode.vdisplay);
124 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
125
126 i++;
127 }
128
129 BUG_ON(i != lds->num_active);
130
131 lds->last_num_active = lds->num_active;
132
133
134 /* Find the first du with a cursor. */
135 list_for_each_entry(entry, &lds->active, active) {
136 du = &entry->base;
137
138 if (!du->cursor_dmabuf)
139 continue;
140
141 ret = vmw_cursor_update_dmabuf(dev_priv,
142 du->cursor_dmabuf,
143 64, 64,
144 du->hotspot_x,
145 du->hotspot_y);
146 if (ret == 0)
147 break;
148
149 DRM_ERROR("Could not update cursor image\n");
150 }
151
152 return 0;
153 }
154
vmw_ldu_del_active(struct vmw_private * vmw_priv,struct vmw_legacy_display_unit * ldu)155 static int vmw_ldu_del_active(struct vmw_private *vmw_priv,
156 struct vmw_legacy_display_unit *ldu)
157 {
158 struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
159 if (list_empty(&ldu->active))
160 return 0;
161
162 /* Must init otherwise list_empty(&ldu->active) will not work. */
163 list_del_init(&ldu->active);
164 if (--(ld->num_active) == 0) {
165 BUG_ON(!ld->fb);
166 if (ld->fb->unpin)
167 ld->fb->unpin(ld->fb);
168 ld->fb = NULL;
169 }
170
171 return 0;
172 }
173
vmw_ldu_add_active(struct vmw_private * vmw_priv,struct vmw_legacy_display_unit * ldu,struct vmw_framebuffer * vfb)174 static int vmw_ldu_add_active(struct vmw_private *vmw_priv,
175 struct vmw_legacy_display_unit *ldu,
176 struct vmw_framebuffer *vfb)
177 {
178 struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
179 struct vmw_legacy_display_unit *entry;
180 struct list_head *at;
181
182 BUG_ON(!ld->num_active && ld->fb);
183 if (vfb != ld->fb) {
184 if (ld->fb && ld->fb->unpin)
185 ld->fb->unpin(ld->fb);
186 if (vfb->pin)
187 vfb->pin(vfb);
188 ld->fb = vfb;
189 }
190
191 if (!list_empty(&ldu->active))
192 return 0;
193
194 at = &ld->active;
195 list_for_each_entry(entry, &ld->active, active) {
196 if (entry->base.unit > ldu->base.unit)
197 break;
198
199 at = &entry->active;
200 }
201
202 list_add(&ldu->active, at);
203
204 ld->num_active++;
205
206 return 0;
207 }
208
vmw_ldu_crtc_set_config(struct drm_mode_set * set)209 static int vmw_ldu_crtc_set_config(struct drm_mode_set *set)
210 {
211 struct vmw_private *dev_priv;
212 struct vmw_legacy_display_unit *ldu;
213 struct drm_connector *connector;
214 struct drm_display_mode *mode;
215 struct drm_encoder *encoder;
216 struct vmw_framebuffer *vfb;
217 struct drm_framebuffer *fb;
218 struct drm_crtc *crtc;
219
220 if (!set)
221 return -EINVAL;
222
223 if (!set->crtc)
224 return -EINVAL;
225
226 /* get the ldu */
227 crtc = set->crtc;
228 ldu = vmw_crtc_to_ldu(crtc);
229 vfb = set->fb ? vmw_framebuffer_to_vfb(set->fb) : NULL;
230 dev_priv = vmw_priv(crtc->dev);
231
232 if (set->num_connectors > 1) {
233 DRM_ERROR("to many connectors\n");
234 return -EINVAL;
235 }
236
237 if (set->num_connectors == 1 &&
238 set->connectors[0] != &ldu->base.connector) {
239 DRM_ERROR("connector doesn't match %p %p\n",
240 set->connectors[0], &ldu->base.connector);
241 return -EINVAL;
242 }
243
244 /* ldu only supports one fb active at the time */
245 if (dev_priv->ldu_priv->fb && vfb &&
246 !(dev_priv->ldu_priv->num_active == 1 &&
247 !list_empty(&ldu->active)) &&
248 dev_priv->ldu_priv->fb != vfb) {
249 DRM_ERROR("Multiple framebuffers not supported\n");
250 return -EINVAL;
251 }
252
253 /* since they always map one to one these are safe */
254 connector = &ldu->base.connector;
255 encoder = &ldu->base.encoder;
256
257 /* should we turn the crtc off? */
258 if (set->num_connectors == 0 || !set->mode || !set->fb) {
259
260 connector->encoder = NULL;
261 encoder->crtc = NULL;
262 crtc->primary->fb = NULL;
263 crtc->enabled = false;
264
265 vmw_ldu_del_active(dev_priv, ldu);
266
267 return vmw_ldu_commit_list(dev_priv);
268 }
269
270
271 /* we now know we want to set a mode */
272 mode = set->mode;
273 fb = set->fb;
274
275 if (set->x + mode->hdisplay > fb->width ||
276 set->y + mode->vdisplay > fb->height) {
277 DRM_ERROR("set outside of framebuffer\n");
278 return -EINVAL;
279 }
280
281 vmw_fb_off(dev_priv);
282
283 crtc->primary->fb = fb;
284 encoder->crtc = crtc;
285 connector->encoder = encoder;
286 crtc->x = set->x;
287 crtc->y = set->y;
288 crtc->mode = *mode;
289 crtc->enabled = true;
290
291 vmw_ldu_add_active(dev_priv, ldu, vfb);
292
293 return vmw_ldu_commit_list(dev_priv);
294 }
295
296 static struct drm_crtc_funcs vmw_legacy_crtc_funcs = {
297 .save = vmw_du_crtc_save,
298 .restore = vmw_du_crtc_restore,
299 .cursor_set = vmw_du_crtc_cursor_set,
300 .cursor_move = vmw_du_crtc_cursor_move,
301 .gamma_set = vmw_du_crtc_gamma_set,
302 .destroy = vmw_ldu_crtc_destroy,
303 .set_config = vmw_ldu_crtc_set_config,
304 };
305
306
307 /*
308 * Legacy Display Unit encoder functions
309 */
310
vmw_ldu_encoder_destroy(struct drm_encoder * encoder)311 static void vmw_ldu_encoder_destroy(struct drm_encoder *encoder)
312 {
313 vmw_ldu_destroy(vmw_encoder_to_ldu(encoder));
314 }
315
316 static struct drm_encoder_funcs vmw_legacy_encoder_funcs = {
317 .destroy = vmw_ldu_encoder_destroy,
318 };
319
320 /*
321 * Legacy Display Unit connector functions
322 */
323
vmw_ldu_connector_destroy(struct drm_connector * connector)324 static void vmw_ldu_connector_destroy(struct drm_connector *connector)
325 {
326 vmw_ldu_destroy(vmw_connector_to_ldu(connector));
327 }
328
329 static struct drm_connector_funcs vmw_legacy_connector_funcs = {
330 .dpms = vmw_du_connector_dpms,
331 .save = vmw_du_connector_save,
332 .restore = vmw_du_connector_restore,
333 .detect = vmw_du_connector_detect,
334 .fill_modes = vmw_du_connector_fill_modes,
335 .set_property = vmw_du_connector_set_property,
336 .destroy = vmw_ldu_connector_destroy,
337 };
338
vmw_ldu_init(struct vmw_private * dev_priv,unsigned unit)339 static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit)
340 {
341 struct vmw_legacy_display_unit *ldu;
342 struct drm_device *dev = dev_priv->dev;
343 struct drm_connector *connector;
344 struct drm_encoder *encoder;
345 struct drm_crtc *crtc;
346
347 ldu = kzalloc(sizeof(*ldu), GFP_KERNEL);
348 if (!ldu)
349 return -ENOMEM;
350
351 ldu->base.unit = unit;
352 crtc = &ldu->base.crtc;
353 encoder = &ldu->base.encoder;
354 connector = &ldu->base.connector;
355
356 INIT_LIST_HEAD(&ldu->active);
357
358 ldu->base.pref_active = (unit == 0);
359 ldu->base.pref_width = dev_priv->initial_width;
360 ldu->base.pref_height = dev_priv->initial_height;
361 ldu->base.pref_mode = NULL;
362 ldu->base.is_implicit = true;
363
364 drm_connector_init(dev, connector, &vmw_legacy_connector_funcs,
365 DRM_MODE_CONNECTOR_VIRTUAL);
366 connector->status = vmw_du_connector_detect(connector, true);
367
368 drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs,
369 DRM_MODE_ENCODER_VIRTUAL);
370 drm_mode_connector_attach_encoder(connector, encoder);
371 encoder->possible_crtcs = (1 << unit);
372 encoder->possible_clones = 0;
373
374 (void) drm_sysfs_connector_add(connector);
375
376 drm_crtc_init(dev, crtc, &vmw_legacy_crtc_funcs);
377
378 drm_mode_crtc_set_gamma_size(crtc, 256);
379
380 drm_object_attach_property(&connector->base,
381 dev->mode_config.dirty_info_property,
382 1);
383
384 return 0;
385 }
386
vmw_kms_init_legacy_display_system(struct vmw_private * dev_priv)387 int vmw_kms_init_legacy_display_system(struct vmw_private *dev_priv)
388 {
389 struct drm_device *dev = dev_priv->dev;
390 int i, ret;
391
392 if (dev_priv->ldu_priv) {
393 DRM_INFO("ldu system already on\n");
394 return -EINVAL;
395 }
396
397 dev_priv->ldu_priv = kmalloc(sizeof(*dev_priv->ldu_priv), GFP_KERNEL);
398 if (!dev_priv->ldu_priv)
399 return -ENOMEM;
400
401 INIT_LIST_HEAD(&dev_priv->ldu_priv->active);
402 dev_priv->ldu_priv->num_active = 0;
403 dev_priv->ldu_priv->last_num_active = 0;
404 dev_priv->ldu_priv->fb = NULL;
405
406 /* for old hardware without multimon only enable one display */
407 if (dev_priv->capabilities & SVGA_CAP_MULTIMON)
408 ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS);
409 else
410 ret = drm_vblank_init(dev, 1);
411 if (ret != 0)
412 goto err_free;
413
414 ret = drm_mode_create_dirty_info_property(dev);
415 if (ret != 0)
416 goto err_vblank_cleanup;
417
418 if (dev_priv->capabilities & SVGA_CAP_MULTIMON)
419 for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i)
420 vmw_ldu_init(dev_priv, i);
421 else
422 vmw_ldu_init(dev_priv, 0);
423
424 return 0;
425
426 err_vblank_cleanup:
427 drm_vblank_cleanup(dev);
428 err_free:
429 kfree(dev_priv->ldu_priv);
430 dev_priv->ldu_priv = NULL;
431 return ret;
432 }
433
vmw_kms_close_legacy_display_system(struct vmw_private * dev_priv)434 int vmw_kms_close_legacy_display_system(struct vmw_private *dev_priv)
435 {
436 struct drm_device *dev = dev_priv->dev;
437
438 if (!dev_priv->ldu_priv)
439 return -ENOSYS;
440
441 drm_vblank_cleanup(dev);
442
443 BUG_ON(!list_empty(&dev_priv->ldu_priv->active));
444
445 kfree(dev_priv->ldu_priv);
446
447 return 0;
448 }
449