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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 | ||
7a1c2f6c | 30 | |
fb1d9738 JB |
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; | |
d7e1958d | 42 | unsigned last_num_active; |
fb1d9738 JB |
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; | |
fb1d9738 JB |
54 | }; |
55 | ||
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 | ||
fb1d9738 JB |
68 | static void vmw_ldu_crtc_destroy(struct drm_crtc *crtc) |
69 | { | |
70 | vmw_ldu_destroy(vmw_crtc_to_ldu(crtc)); | |
71 | } | |
72 | ||
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; | |
d7e1958d JB |
77 | struct drm_framebuffer *fb = NULL; |
78 | struct drm_crtc *crtc = NULL; | |
fb1d9738 JB |
79 | int i = 0; |
80 | ||
d7e1958d JB |
81 | /* If there is no display topology the host just assumes |
82 | * that the guest will set the same layout as the host. | |
83 | */ | |
84 | if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY)) { | |
85 | int w = 0, h = 0; | |
86 | list_for_each_entry(entry, &lds->active, active) { | |
87 | crtc = &entry->base.crtc; | |
88 | w = max(w, crtc->x + crtc->mode.hdisplay); | |
89 | h = max(h, crtc->y + crtc->mode.vdisplay); | |
90 | i++; | |
91 | } | |
92 | ||
93 | if (crtc == NULL) | |
94 | return 0; | |
95 | fb = entry->base.crtc.fb; | |
96 | ||
0bef23f9 MD |
97 | return vmw_kms_write_svga(dev_priv, w, h, fb->pitch, |
98 | fb->bits_per_pixel, fb->depth); | |
d7e1958d JB |
99 | } |
100 | ||
d7e1958d JB |
101 | if (!list_empty(&lds->active)) { |
102 | entry = list_entry(lds->active.next, typeof(*entry), active); | |
103 | fb = entry->base.crtc.fb; | |
104 | ||
105 | vmw_kms_write_svga(dev_priv, fb->width, fb->height, fb->pitch, | |
106 | fb->bits_per_pixel, fb->depth); | |
107 | } | |
108 | ||
259600d5 JB |
109 | /* Make sure we always show something. */ |
110 | vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS, | |
111 | lds->num_active ? lds->num_active : 1); | |
112 | ||
fb1d9738 JB |
113 | i = 0; |
114 | list_for_each_entry(entry, &lds->active, active) { | |
115 | crtc = &entry->base.crtc; | |
116 | ||
117 | vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, i); | |
118 | vmw_write(dev_priv, SVGA_REG_DISPLAY_IS_PRIMARY, !i); | |
119 | vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_X, crtc->x); | |
120 | vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_Y, crtc->y); | |
121 | vmw_write(dev_priv, SVGA_REG_DISPLAY_WIDTH, crtc->mode.hdisplay); | |
122 | vmw_write(dev_priv, SVGA_REG_DISPLAY_HEIGHT, crtc->mode.vdisplay); | |
123 | vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID); | |
124 | ||
125 | i++; | |
126 | } | |
127 | ||
d7e1958d JB |
128 | BUG_ON(i != lds->num_active); |
129 | ||
130 | lds->last_num_active = lds->num_active; | |
131 | ||
fb1d9738 JB |
132 | return 0; |
133 | } | |
134 | ||
135 | static int vmw_ldu_del_active(struct vmw_private *vmw_priv, | |
136 | struct vmw_legacy_display_unit *ldu) | |
137 | { | |
138 | struct vmw_legacy_display *ld = vmw_priv->ldu_priv; | |
139 | if (list_empty(&ldu->active)) | |
140 | return 0; | |
141 | ||
6a591a96 | 142 | /* Must init otherwise list_empty(&ldu->active) will not work. */ |
fb1d9738 JB |
143 | list_del_init(&ldu->active); |
144 | if (--(ld->num_active) == 0) { | |
145 | BUG_ON(!ld->fb); | |
146 | if (ld->fb->unpin) | |
147 | ld->fb->unpin(ld->fb); | |
148 | ld->fb = NULL; | |
149 | } | |
150 | ||
151 | return 0; | |
152 | } | |
153 | ||
154 | static int vmw_ldu_add_active(struct vmw_private *vmw_priv, | |
155 | struct vmw_legacy_display_unit *ldu, | |
156 | struct vmw_framebuffer *vfb) | |
157 | { | |
158 | struct vmw_legacy_display *ld = vmw_priv->ldu_priv; | |
159 | struct vmw_legacy_display_unit *entry; | |
160 | struct list_head *at; | |
161 | ||
04e9e94d JB |
162 | BUG_ON(!ld->num_active && ld->fb); |
163 | if (vfb != ld->fb) { | |
164 | if (ld->fb && ld->fb->unpin) | |
165 | ld->fb->unpin(ld->fb); | |
166 | if (vfb->pin) | |
167 | vfb->pin(vfb); | |
168 | ld->fb = vfb; | |
169 | } | |
170 | ||
fb1d9738 JB |
171 | if (!list_empty(&ldu->active)) |
172 | return 0; | |
173 | ||
174 | at = &ld->active; | |
175 | list_for_each_entry(entry, &ld->active, active) { | |
bbfad336 | 176 | if (entry->base.unit > ldu->base.unit) |
fb1d9738 JB |
177 | break; |
178 | ||
179 | at = &entry->active; | |
180 | } | |
181 | ||
182 | list_add(&ldu->active, at); | |
04e9e94d JB |
183 | |
184 | ld->num_active++; | |
fb1d9738 JB |
185 | |
186 | return 0; | |
187 | } | |
188 | ||
189 | static int vmw_ldu_crtc_set_config(struct drm_mode_set *set) | |
190 | { | |
191 | struct vmw_private *dev_priv; | |
192 | struct vmw_legacy_display_unit *ldu; | |
193 | struct drm_connector *connector; | |
194 | struct drm_display_mode *mode; | |
195 | struct drm_encoder *encoder; | |
196 | struct vmw_framebuffer *vfb; | |
197 | struct drm_framebuffer *fb; | |
198 | struct drm_crtc *crtc; | |
199 | ||
200 | if (!set) | |
201 | return -EINVAL; | |
202 | ||
203 | if (!set->crtc) | |
204 | return -EINVAL; | |
205 | ||
206 | /* get the ldu */ | |
207 | crtc = set->crtc; | |
208 | ldu = vmw_crtc_to_ldu(crtc); | |
209 | vfb = set->fb ? vmw_framebuffer_to_vfb(set->fb) : NULL; | |
210 | dev_priv = vmw_priv(crtc->dev); | |
211 | ||
212 | if (set->num_connectors > 1) { | |
213 | DRM_ERROR("to many connectors\n"); | |
214 | return -EINVAL; | |
215 | } | |
216 | ||
217 | if (set->num_connectors == 1 && | |
218 | set->connectors[0] != &ldu->base.connector) { | |
219 | DRM_ERROR("connector doesn't match %p %p\n", | |
220 | set->connectors[0], &ldu->base.connector); | |
221 | return -EINVAL; | |
222 | } | |
223 | ||
224 | /* ldu only supports one fb active at the time */ | |
225 | if (dev_priv->ldu_priv->fb && vfb && | |
6a591a96 JB |
226 | !(dev_priv->ldu_priv->num_active == 1 && |
227 | !list_empty(&ldu->active)) && | |
fb1d9738 JB |
228 | dev_priv->ldu_priv->fb != vfb) { |
229 | DRM_ERROR("Multiple framebuffers not supported\n"); | |
230 | return -EINVAL; | |
231 | } | |
232 | ||
233 | /* since they always map one to one these are safe */ | |
234 | connector = &ldu->base.connector; | |
235 | encoder = &ldu->base.encoder; | |
236 | ||
237 | /* should we turn the crtc off? */ | |
238 | if (set->num_connectors == 0 || !set->mode || !set->fb) { | |
239 | ||
240 | connector->encoder = NULL; | |
241 | encoder->crtc = NULL; | |
242 | crtc->fb = NULL; | |
243 | ||
244 | vmw_ldu_del_active(dev_priv, ldu); | |
245 | ||
0bef23f9 | 246 | return vmw_ldu_commit_list(dev_priv); |
fb1d9738 JB |
247 | } |
248 | ||
249 | ||
250 | /* we now know we want to set a mode */ | |
251 | mode = set->mode; | |
252 | fb = set->fb; | |
253 | ||
254 | if (set->x + mode->hdisplay > fb->width || | |
255 | set->y + mode->vdisplay > fb->height) { | |
256 | DRM_ERROR("set outside of framebuffer\n"); | |
257 | return -EINVAL; | |
258 | } | |
259 | ||
260 | vmw_fb_off(dev_priv); | |
261 | ||
262 | crtc->fb = fb; | |
263 | encoder->crtc = crtc; | |
264 | connector->encoder = encoder; | |
265 | crtc->x = set->x; | |
266 | crtc->y = set->y; | |
267 | crtc->mode = *mode; | |
268 | ||
269 | vmw_ldu_add_active(dev_priv, ldu, vfb); | |
270 | ||
0bef23f9 | 271 | return vmw_ldu_commit_list(dev_priv); |
fb1d9738 JB |
272 | } |
273 | ||
274 | static struct drm_crtc_funcs vmw_legacy_crtc_funcs = { | |
626ab771 JB |
275 | .save = vmw_du_crtc_save, |
276 | .restore = vmw_du_crtc_restore, | |
fb1d9738 JB |
277 | .cursor_set = vmw_du_crtc_cursor_set, |
278 | .cursor_move = vmw_du_crtc_cursor_move, | |
626ab771 | 279 | .gamma_set = vmw_du_crtc_gamma_set, |
fb1d9738 JB |
280 | .destroy = vmw_ldu_crtc_destroy, |
281 | .set_config = vmw_ldu_crtc_set_config, | |
282 | }; | |
283 | ||
626ab771 | 284 | |
fb1d9738 JB |
285 | /* |
286 | * Legacy Display Unit encoder functions | |
287 | */ | |
288 | ||
289 | static void vmw_ldu_encoder_destroy(struct drm_encoder *encoder) | |
290 | { | |
291 | vmw_ldu_destroy(vmw_encoder_to_ldu(encoder)); | |
292 | } | |
293 | ||
294 | static struct drm_encoder_funcs vmw_legacy_encoder_funcs = { | |
295 | .destroy = vmw_ldu_encoder_destroy, | |
296 | }; | |
297 | ||
298 | /* | |
299 | * Legacy Display Unit connector functions | |
300 | */ | |
301 | ||
fb1d9738 JB |
302 | static void vmw_ldu_connector_destroy(struct drm_connector *connector) |
303 | { | |
304 | vmw_ldu_destroy(vmw_connector_to_ldu(connector)); | |
305 | } | |
306 | ||
307 | static struct drm_connector_funcs vmw_legacy_connector_funcs = { | |
626ab771 JB |
308 | .dpms = vmw_du_connector_dpms, |
309 | .save = vmw_du_connector_save, | |
310 | .restore = vmw_du_connector_restore, | |
311 | .detect = vmw_du_connector_detect, | |
312 | .fill_modes = vmw_du_connector_fill_modes, | |
313 | .set_property = vmw_du_connector_set_property, | |
fb1d9738 JB |
314 | .destroy = vmw_ldu_connector_destroy, |
315 | }; | |
316 | ||
317 | static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit) | |
318 | { | |
319 | struct vmw_legacy_display_unit *ldu; | |
320 | struct drm_device *dev = dev_priv->dev; | |
321 | struct drm_connector *connector; | |
322 | struct drm_encoder *encoder; | |
323 | struct drm_crtc *crtc; | |
324 | ||
325 | ldu = kzalloc(sizeof(*ldu), GFP_KERNEL); | |
326 | if (!ldu) | |
327 | return -ENOMEM; | |
328 | ||
bbfad336 | 329 | ldu->base.unit = unit; |
fb1d9738 JB |
330 | crtc = &ldu->base.crtc; |
331 | encoder = &ldu->base.encoder; | |
332 | connector = &ldu->base.connector; | |
333 | ||
1ae1ddd5 JB |
334 | INIT_LIST_HEAD(&ldu->active); |
335 | ||
626ab771 JB |
336 | ldu->base.pref_active = (unit == 0); |
337 | ldu->base.pref_width = 800; | |
338 | ldu->base.pref_height = 600; | |
339 | ldu->base.pref_mode = NULL; | |
6987427a | 340 | ldu->base.is_implicit = true; |
d8bd19d2 | 341 | |
fb1d9738 | 342 | drm_connector_init(dev, connector, &vmw_legacy_connector_funcs, |
305151e3 | 343 | DRM_MODE_CONNECTOR_VIRTUAL); |
626ab771 | 344 | connector->status = vmw_du_connector_detect(connector, true); |
fb1d9738 JB |
345 | |
346 | drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs, | |
305151e3 | 347 | DRM_MODE_ENCODER_VIRTUAL); |
fb1d9738 JB |
348 | drm_mode_connector_attach_encoder(connector, encoder); |
349 | encoder->possible_crtcs = (1 << unit); | |
350 | encoder->possible_clones = 0; | |
351 | ||
fb1d9738 JB |
352 | drm_crtc_init(dev, crtc, &vmw_legacy_crtc_funcs); |
353 | ||
f01b7ba0 MD |
354 | drm_mode_crtc_set_gamma_size(crtc, 256); |
355 | ||
fb1d9738 JB |
356 | drm_connector_attach_property(connector, |
357 | dev->mode_config.dirty_info_property, | |
358 | 1); | |
359 | ||
360 | return 0; | |
361 | } | |
362 | ||
363 | int vmw_kms_init_legacy_display_system(struct vmw_private *dev_priv) | |
364 | { | |
7a1c2f6c | 365 | struct drm_device *dev = dev_priv->dev; |
74b5ea30 | 366 | int i, ret; |
7a1c2f6c | 367 | |
fb1d9738 JB |
368 | if (dev_priv->ldu_priv) { |
369 | DRM_INFO("ldu system already on\n"); | |
370 | return -EINVAL; | |
371 | } | |
372 | ||
85b54e0c | 373 | dev_priv->ldu_priv = kmalloc(sizeof(*dev_priv->ldu_priv), GFP_KERNEL); |
fb1d9738 JB |
374 | if (!dev_priv->ldu_priv) |
375 | return -ENOMEM; | |
376 | ||
377 | INIT_LIST_HEAD(&dev_priv->ldu_priv->active); | |
378 | dev_priv->ldu_priv->num_active = 0; | |
d7e1958d | 379 | dev_priv->ldu_priv->last_num_active = 0; |
fb1d9738 JB |
380 | dev_priv->ldu_priv->fb = NULL; |
381 | ||
60a16a30 JB |
382 | /* for old hardware without multimon only enable one display */ |
383 | if (dev_priv->capabilities & SVGA_CAP_MULTIMON) | |
384 | ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS); | |
385 | else | |
386 | ret = drm_vblank_init(dev, 1); | |
387 | if (ret != 0) | |
388 | goto err_free; | |
fb1d9738 | 389 | |
60a16a30 JB |
390 | ret = drm_mode_create_dirty_info_property(dev); |
391 | if (ret != 0) | |
392 | goto err_vblank_cleanup; | |
393 | ||
394 | if (dev_priv->capabilities & SVGA_CAP_MULTIMON) | |
56d1c78d | 395 | for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i) |
7a1c2f6c | 396 | vmw_ldu_init(dev_priv, i); |
60a16a30 | 397 | else |
7a1c2f6c | 398 | vmw_ldu_init(dev_priv, 0); |
fb1d9738 | 399 | |
60a16a30 JB |
400 | return 0; |
401 | ||
402 | err_vblank_cleanup: | |
403 | drm_vblank_cleanup(dev); | |
404 | err_free: | |
405 | kfree(dev_priv->ldu_priv); | |
406 | dev_priv->ldu_priv = NULL; | |
7a1c2f6c | 407 | return ret; |
fb1d9738 JB |
408 | } |
409 | ||
410 | int vmw_kms_close_legacy_display_system(struct vmw_private *dev_priv) | |
411 | { | |
7a1c2f6c TH |
412 | struct drm_device *dev = dev_priv->dev; |
413 | ||
fb1d9738 JB |
414 | if (!dev_priv->ldu_priv) |
415 | return -ENOSYS; | |
416 | ||
60a16a30 JB |
417 | drm_vblank_cleanup(dev); |
418 | ||
fb1d9738 JB |
419 | BUG_ON(!list_empty(&dev_priv->ldu_priv->active)); |
420 | ||
421 | kfree(dev_priv->ldu_priv); | |
422 | ||
423 | return 0; | |
424 | } |