Commit | Line | Data |
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0a6659bd GH |
1 | /* |
2 | * This program is free software; you can redistribute it and/or modify | |
3 | * it under the terms of the GNU General Public License as published by | |
4 | * the Free Software Foundation; either version 2 of the License, or | |
5 | * (at your option) any later version. | |
6 | */ | |
7 | ||
8 | #include "bochs.h" | |
9 | ||
10 | static int defx = 1024; | |
11 | static int defy = 768; | |
12 | ||
13 | module_param(defx, int, 0444); | |
14 | module_param(defy, int, 0444); | |
15 | MODULE_PARM_DESC(defx, "default x resolution"); | |
16 | MODULE_PARM_DESC(defy, "default y resolution"); | |
17 | ||
18 | /* ---------------------------------------------------------------------- */ | |
19 | ||
20 | static void bochs_crtc_load_lut(struct drm_crtc *crtc) | |
21 | { | |
22 | } | |
23 | ||
24 | static void bochs_crtc_dpms(struct drm_crtc *crtc, int mode) | |
25 | { | |
26 | switch (mode) { | |
27 | case DRM_MODE_DPMS_ON: | |
28 | case DRM_MODE_DPMS_STANDBY: | |
29 | case DRM_MODE_DPMS_SUSPEND: | |
30 | case DRM_MODE_DPMS_OFF: | |
31 | default: | |
32 | return; | |
33 | } | |
34 | } | |
35 | ||
36 | static bool bochs_crtc_mode_fixup(struct drm_crtc *crtc, | |
37 | const struct drm_display_mode *mode, | |
38 | struct drm_display_mode *adjusted_mode) | |
39 | { | |
40 | return true; | |
41 | } | |
42 | ||
43 | static int bochs_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y, | |
44 | struct drm_framebuffer *old_fb) | |
45 | { | |
46 | struct bochs_device *bochs = | |
47 | container_of(crtc, struct bochs_device, crtc); | |
48 | struct bochs_framebuffer *bochs_fb; | |
49 | struct bochs_bo *bo; | |
50 | u64 gpu_addr = 0; | |
51 | int ret; | |
52 | ||
53 | if (old_fb) { | |
54 | bochs_fb = to_bochs_framebuffer(old_fb); | |
55 | bo = gem_to_bochs_bo(bochs_fb->obj); | |
56 | ret = ttm_bo_reserve(&bo->bo, true, false, false, 0); | |
57 | if (ret) { | |
58 | DRM_ERROR("failed to reserve old_fb bo\n"); | |
59 | } else { | |
60 | bochs_bo_unpin(bo); | |
61 | ttm_bo_unreserve(&bo->bo); | |
62 | } | |
63 | } | |
64 | ||
f4510a27 | 65 | if (WARN_ON(crtc->primary->fb == NULL)) |
0a6659bd GH |
66 | return -EINVAL; |
67 | ||
f4510a27 | 68 | bochs_fb = to_bochs_framebuffer(crtc->primary->fb); |
0a6659bd GH |
69 | bo = gem_to_bochs_bo(bochs_fb->obj); |
70 | ret = ttm_bo_reserve(&bo->bo, true, false, false, 0); | |
71 | if (ret) | |
72 | return ret; | |
73 | ||
74 | ret = bochs_bo_pin(bo, TTM_PL_FLAG_VRAM, &gpu_addr); | |
75 | if (ret) { | |
76 | ttm_bo_unreserve(&bo->bo); | |
77 | return ret; | |
78 | } | |
79 | ||
80 | ttm_bo_unreserve(&bo->bo); | |
81 | bochs_hw_setbase(bochs, x, y, gpu_addr); | |
82 | return 0; | |
83 | } | |
84 | ||
85 | static int bochs_crtc_mode_set(struct drm_crtc *crtc, | |
86 | struct drm_display_mode *mode, | |
87 | struct drm_display_mode *adjusted_mode, | |
88 | int x, int y, struct drm_framebuffer *old_fb) | |
89 | { | |
90 | struct bochs_device *bochs = | |
91 | container_of(crtc, struct bochs_device, crtc); | |
92 | ||
93 | bochs_hw_setmode(bochs, mode); | |
94 | bochs_crtc_mode_set_base(crtc, x, y, old_fb); | |
95 | return 0; | |
96 | } | |
97 | ||
98 | static void bochs_crtc_prepare(struct drm_crtc *crtc) | |
99 | { | |
100 | } | |
101 | ||
102 | static void bochs_crtc_commit(struct drm_crtc *crtc) | |
103 | { | |
104 | } | |
105 | ||
106 | static void bochs_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green, | |
107 | u16 *blue, uint32_t start, uint32_t size) | |
108 | { | |
109 | } | |
110 | ||
111 | /* These provide the minimum set of functions required to handle a CRTC */ | |
112 | static const struct drm_crtc_funcs bochs_crtc_funcs = { | |
113 | .gamma_set = bochs_crtc_gamma_set, | |
114 | .set_config = drm_crtc_helper_set_config, | |
115 | .destroy = drm_crtc_cleanup, | |
116 | }; | |
117 | ||
118 | static const struct drm_crtc_helper_funcs bochs_helper_funcs = { | |
119 | .dpms = bochs_crtc_dpms, | |
120 | .mode_fixup = bochs_crtc_mode_fixup, | |
121 | .mode_set = bochs_crtc_mode_set, | |
122 | .mode_set_base = bochs_crtc_mode_set_base, | |
123 | .prepare = bochs_crtc_prepare, | |
124 | .commit = bochs_crtc_commit, | |
125 | .load_lut = bochs_crtc_load_lut, | |
126 | }; | |
127 | ||
128 | static void bochs_crtc_init(struct drm_device *dev) | |
129 | { | |
130 | struct bochs_device *bochs = dev->dev_private; | |
131 | struct drm_crtc *crtc = &bochs->crtc; | |
132 | ||
133 | drm_crtc_init(dev, crtc, &bochs_crtc_funcs); | |
134 | drm_mode_crtc_set_gamma_size(crtc, 256); | |
135 | drm_crtc_helper_add(crtc, &bochs_helper_funcs); | |
136 | } | |
137 | ||
138 | static bool bochs_encoder_mode_fixup(struct drm_encoder *encoder, | |
139 | const struct drm_display_mode *mode, | |
140 | struct drm_display_mode *adjusted_mode) | |
141 | { | |
142 | return true; | |
143 | } | |
144 | ||
145 | static void bochs_encoder_mode_set(struct drm_encoder *encoder, | |
146 | struct drm_display_mode *mode, | |
147 | struct drm_display_mode *adjusted_mode) | |
148 | { | |
149 | } | |
150 | ||
151 | static void bochs_encoder_dpms(struct drm_encoder *encoder, int state) | |
152 | { | |
153 | } | |
154 | ||
155 | static void bochs_encoder_prepare(struct drm_encoder *encoder) | |
156 | { | |
157 | } | |
158 | ||
159 | static void bochs_encoder_commit(struct drm_encoder *encoder) | |
160 | { | |
161 | } | |
162 | ||
163 | static const struct drm_encoder_helper_funcs bochs_encoder_helper_funcs = { | |
164 | .dpms = bochs_encoder_dpms, | |
165 | .mode_fixup = bochs_encoder_mode_fixup, | |
166 | .mode_set = bochs_encoder_mode_set, | |
167 | .prepare = bochs_encoder_prepare, | |
168 | .commit = bochs_encoder_commit, | |
169 | }; | |
170 | ||
171 | static const struct drm_encoder_funcs bochs_encoder_encoder_funcs = { | |
172 | .destroy = drm_encoder_cleanup, | |
173 | }; | |
174 | ||
175 | static void bochs_encoder_init(struct drm_device *dev) | |
176 | { | |
177 | struct bochs_device *bochs = dev->dev_private; | |
178 | struct drm_encoder *encoder = &bochs->encoder; | |
179 | ||
180 | encoder->possible_crtcs = 0x1; | |
181 | drm_encoder_init(dev, encoder, &bochs_encoder_encoder_funcs, | |
182 | DRM_MODE_ENCODER_DAC); | |
183 | drm_encoder_helper_add(encoder, &bochs_encoder_helper_funcs); | |
184 | } | |
185 | ||
186 | ||
187 | int bochs_connector_get_modes(struct drm_connector *connector) | |
188 | { | |
189 | int count; | |
190 | ||
191 | count = drm_add_modes_noedid(connector, 8192, 8192); | |
192 | drm_set_preferred_mode(connector, defx, defy); | |
193 | return count; | |
194 | } | |
195 | ||
196 | static int bochs_connector_mode_valid(struct drm_connector *connector, | |
197 | struct drm_display_mode *mode) | |
198 | { | |
199 | struct bochs_device *bochs = | |
200 | container_of(connector, struct bochs_device, connector); | |
201 | unsigned long size = mode->hdisplay * mode->vdisplay * 4; | |
202 | ||
203 | /* | |
204 | * Make sure we can fit two framebuffers into video memory. | |
205 | * This allows up to 1600x1200 with 16 MB (default size). | |
206 | * If you want more try this: | |
207 | * 'qemu -vga std -global VGA.vgamem_mb=32 $otherargs' | |
208 | */ | |
209 | if (size * 2 > bochs->fb_size) | |
210 | return MODE_BAD; | |
211 | ||
212 | return MODE_OK; | |
213 | } | |
214 | ||
215 | static struct drm_encoder * | |
216 | bochs_connector_best_encoder(struct drm_connector *connector) | |
217 | { | |
218 | int enc_id = connector->encoder_ids[0]; | |
219 | struct drm_mode_object *obj; | |
220 | struct drm_encoder *encoder; | |
221 | ||
222 | /* pick the encoder ids */ | |
223 | if (enc_id) { | |
224 | obj = drm_mode_object_find(connector->dev, enc_id, | |
225 | DRM_MODE_OBJECT_ENCODER); | |
226 | if (!obj) | |
227 | return NULL; | |
228 | encoder = obj_to_encoder(obj); | |
229 | return encoder; | |
230 | } | |
231 | return NULL; | |
232 | } | |
233 | ||
234 | static enum drm_connector_status bochs_connector_detect(struct drm_connector | |
235 | *connector, bool force) | |
236 | { | |
237 | return connector_status_connected; | |
238 | } | |
239 | ||
240 | struct drm_connector_helper_funcs bochs_connector_connector_helper_funcs = { | |
241 | .get_modes = bochs_connector_get_modes, | |
242 | .mode_valid = bochs_connector_mode_valid, | |
243 | .best_encoder = bochs_connector_best_encoder, | |
244 | }; | |
245 | ||
246 | struct drm_connector_funcs bochs_connector_connector_funcs = { | |
247 | .dpms = drm_helper_connector_dpms, | |
248 | .detect = bochs_connector_detect, | |
249 | .fill_modes = drm_helper_probe_single_connector_modes, | |
250 | .destroy = drm_connector_cleanup, | |
251 | }; | |
252 | ||
253 | static void bochs_connector_init(struct drm_device *dev) | |
254 | { | |
255 | struct bochs_device *bochs = dev->dev_private; | |
256 | struct drm_connector *connector = &bochs->connector; | |
257 | ||
258 | drm_connector_init(dev, connector, &bochs_connector_connector_funcs, | |
259 | DRM_MODE_CONNECTOR_VIRTUAL); | |
260 | drm_connector_helper_add(connector, | |
261 | &bochs_connector_connector_helper_funcs); | |
262 | } | |
263 | ||
264 | ||
265 | int bochs_kms_init(struct bochs_device *bochs) | |
266 | { | |
267 | drm_mode_config_init(bochs->dev); | |
268 | bochs->mode_config_initialized = true; | |
269 | ||
270 | bochs->dev->mode_config.max_width = 8192; | |
271 | bochs->dev->mode_config.max_height = 8192; | |
272 | ||
273 | bochs->dev->mode_config.fb_base = bochs->fb_base; | |
274 | bochs->dev->mode_config.preferred_depth = 24; | |
275 | bochs->dev->mode_config.prefer_shadow = 0; | |
276 | ||
277 | bochs->dev->mode_config.funcs = (void *)&bochs_mode_funcs; | |
278 | ||
279 | bochs_crtc_init(bochs->dev); | |
280 | bochs_encoder_init(bochs->dev); | |
281 | bochs_connector_init(bochs->dev); | |
282 | drm_mode_connector_attach_encoder(&bochs->connector, | |
283 | &bochs->encoder); | |
284 | ||
285 | return 0; | |
286 | } | |
287 | ||
288 | void bochs_kms_fini(struct bochs_device *bochs) | |
289 | { | |
290 | if (bochs->mode_config_initialized) { | |
291 | drm_mode_config_cleanup(bochs->dev); | |
292 | bochs->mode_config_initialized = false; | |
293 | } | |
294 | } |