This source file includes following definitions.
- bochs_plane_update
- bochs_pipe_enable
- bochs_pipe_update
- bochs_pipe_prepare_fb
- bochs_pipe_cleanup_fb
- bochs_connector_get_modes
- bochs_connector_mode_valid
- bochs_connector_init
- bochs_gem_fb_create
- bochs_kms_init
- bochs_kms_fini
1
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4
5 #include <linux/moduleparam.h>
6
7 #include <drm/drm_atomic_helper.h>
8 #include <drm/drm_gem_framebuffer_helper.h>
9 #include <drm/drm_probe_helper.h>
10 #include <drm/drm_vblank.h>
11
12 #include "bochs.h"
13
14 static int defx = 1024;
15 static int defy = 768;
16
17 module_param(defx, int, 0444);
18 module_param(defy, int, 0444);
19 MODULE_PARM_DESC(defx, "default x resolution");
20 MODULE_PARM_DESC(defy, "default y resolution");
21
22
23
24 static const uint32_t bochs_formats[] = {
25 DRM_FORMAT_XRGB8888,
26 DRM_FORMAT_BGRX8888,
27 };
28
29 static void bochs_plane_update(struct bochs_device *bochs,
30 struct drm_plane_state *state)
31 {
32 struct drm_gem_vram_object *gbo;
33
34 if (!state->fb || !bochs->stride)
35 return;
36
37 gbo = drm_gem_vram_of_gem(state->fb->obj[0]);
38 bochs_hw_setbase(bochs,
39 state->crtc_x,
40 state->crtc_y,
41 state->fb->pitches[0],
42 state->fb->offsets[0] + gbo->bo.offset);
43 bochs_hw_setformat(bochs, state->fb->format);
44 }
45
46 static void bochs_pipe_enable(struct drm_simple_display_pipe *pipe,
47 struct drm_crtc_state *crtc_state,
48 struct drm_plane_state *plane_state)
49 {
50 struct bochs_device *bochs = pipe->crtc.dev->dev_private;
51
52 bochs_hw_setmode(bochs, &crtc_state->mode);
53 bochs_plane_update(bochs, plane_state);
54 }
55
56 static void bochs_pipe_update(struct drm_simple_display_pipe *pipe,
57 struct drm_plane_state *old_state)
58 {
59 struct bochs_device *bochs = pipe->crtc.dev->dev_private;
60 struct drm_crtc *crtc = &pipe->crtc;
61
62 bochs_plane_update(bochs, pipe->plane.state);
63
64 if (crtc->state->event) {
65 spin_lock_irq(&crtc->dev->event_lock);
66 drm_crtc_send_vblank_event(crtc, crtc->state->event);
67 crtc->state->event = NULL;
68 spin_unlock_irq(&crtc->dev->event_lock);
69 }
70 }
71
72 static int bochs_pipe_prepare_fb(struct drm_simple_display_pipe *pipe,
73 struct drm_plane_state *new_state)
74 {
75 struct drm_gem_vram_object *gbo;
76
77 if (!new_state->fb)
78 return 0;
79 gbo = drm_gem_vram_of_gem(new_state->fb->obj[0]);
80 return drm_gem_vram_pin(gbo, DRM_GEM_VRAM_PL_FLAG_VRAM);
81 }
82
83 static void bochs_pipe_cleanup_fb(struct drm_simple_display_pipe *pipe,
84 struct drm_plane_state *old_state)
85 {
86 struct drm_gem_vram_object *gbo;
87
88 if (!old_state->fb)
89 return;
90 gbo = drm_gem_vram_of_gem(old_state->fb->obj[0]);
91 drm_gem_vram_unpin(gbo);
92 }
93
94 static const struct drm_simple_display_pipe_funcs bochs_pipe_funcs = {
95 .enable = bochs_pipe_enable,
96 .update = bochs_pipe_update,
97 .prepare_fb = bochs_pipe_prepare_fb,
98 .cleanup_fb = bochs_pipe_cleanup_fb,
99 };
100
101 static int bochs_connector_get_modes(struct drm_connector *connector)
102 {
103 struct bochs_device *bochs =
104 container_of(connector, struct bochs_device, connector);
105 int count = 0;
106
107 if (bochs->edid)
108 count = drm_add_edid_modes(connector, bochs->edid);
109
110 if (!count) {
111 count = drm_add_modes_noedid(connector, 8192, 8192);
112 drm_set_preferred_mode(connector, defx, defy);
113 }
114 return count;
115 }
116
117 static enum drm_mode_status bochs_connector_mode_valid(struct drm_connector *connector,
118 struct drm_display_mode *mode)
119 {
120 struct bochs_device *bochs =
121 container_of(connector, struct bochs_device, connector);
122 unsigned long size = mode->hdisplay * mode->vdisplay * 4;
123
124
125
126
127
128
129
130 if (size * 2 > bochs->fb_size)
131 return MODE_BAD;
132
133 return MODE_OK;
134 }
135
136 static const struct drm_connector_helper_funcs bochs_connector_connector_helper_funcs = {
137 .get_modes = bochs_connector_get_modes,
138 .mode_valid = bochs_connector_mode_valid,
139 };
140
141 static const struct drm_connector_funcs bochs_connector_connector_funcs = {
142 .dpms = drm_helper_connector_dpms,
143 .fill_modes = drm_helper_probe_single_connector_modes,
144 .destroy = drm_connector_cleanup,
145 .reset = drm_atomic_helper_connector_reset,
146 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
147 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
148 };
149
150 static void bochs_connector_init(struct drm_device *dev)
151 {
152 struct bochs_device *bochs = dev->dev_private;
153 struct drm_connector *connector = &bochs->connector;
154
155 drm_connector_init(dev, connector, &bochs_connector_connector_funcs,
156 DRM_MODE_CONNECTOR_VIRTUAL);
157 drm_connector_helper_add(connector,
158 &bochs_connector_connector_helper_funcs);
159 drm_connector_register(connector);
160
161 bochs_hw_load_edid(bochs);
162 if (bochs->edid) {
163 DRM_INFO("Found EDID data blob.\n");
164 drm_connector_attach_edid_property(connector);
165 drm_connector_update_edid_property(connector, bochs->edid);
166 }
167 }
168
169 static struct drm_framebuffer *
170 bochs_gem_fb_create(struct drm_device *dev, struct drm_file *file,
171 const struct drm_mode_fb_cmd2 *mode_cmd)
172 {
173 if (mode_cmd->pixel_format != DRM_FORMAT_XRGB8888 &&
174 mode_cmd->pixel_format != DRM_FORMAT_BGRX8888)
175 return ERR_PTR(-EINVAL);
176
177 return drm_gem_fb_create(dev, file, mode_cmd);
178 }
179
180 const struct drm_mode_config_funcs bochs_mode_funcs = {
181 .fb_create = bochs_gem_fb_create,
182 .atomic_check = drm_atomic_helper_check,
183 .atomic_commit = drm_atomic_helper_commit,
184 };
185
186 int bochs_kms_init(struct bochs_device *bochs)
187 {
188 drm_mode_config_init(bochs->dev);
189
190 bochs->dev->mode_config.max_width = 8192;
191 bochs->dev->mode_config.max_height = 8192;
192
193 bochs->dev->mode_config.fb_base = bochs->fb_base;
194 bochs->dev->mode_config.preferred_depth = 24;
195 bochs->dev->mode_config.prefer_shadow = 0;
196 bochs->dev->mode_config.prefer_shadow_fbdev = 1;
197 bochs->dev->mode_config.quirk_addfb_prefer_host_byte_order = true;
198
199 bochs->dev->mode_config.funcs = &bochs_mode_funcs;
200
201 bochs_connector_init(bochs->dev);
202 drm_simple_display_pipe_init(bochs->dev,
203 &bochs->pipe,
204 &bochs_pipe_funcs,
205 bochs_formats,
206 ARRAY_SIZE(bochs_formats),
207 NULL,
208 &bochs->connector);
209
210 drm_mode_config_reset(bochs->dev);
211
212 return 0;
213 }
214
215 void bochs_kms_fini(struct bochs_device *bochs)
216 {
217 drm_atomic_helper_shutdown(bochs->dev);
218 drm_mode_config_cleanup(bochs->dev);
219 }