Commit | Line | Data |
---|---|---|
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 | /* ---------------------------------------------------------------------- */ | |
11 | ||
12 | static struct fb_ops bochsfb_ops = { | |
13 | .owner = THIS_MODULE, | |
14 | .fb_check_var = drm_fb_helper_check_var, | |
15 | .fb_set_par = drm_fb_helper_set_par, | |
16 | .fb_fillrect = sys_fillrect, | |
17 | .fb_copyarea = sys_copyarea, | |
18 | .fb_imageblit = sys_imageblit, | |
19 | .fb_pan_display = drm_fb_helper_pan_display, | |
20 | .fb_blank = drm_fb_helper_blank, | |
21 | .fb_setcmap = drm_fb_helper_setcmap, | |
22 | }; | |
23 | ||
24 | static int bochsfb_create_object(struct bochs_device *bochs, | |
25 | struct drm_mode_fb_cmd2 *mode_cmd, | |
26 | struct drm_gem_object **gobj_p) | |
27 | { | |
28 | struct drm_device *dev = bochs->dev; | |
29 | struct drm_gem_object *gobj; | |
30 | u32 size; | |
31 | int ret = 0; | |
32 | ||
33 | size = mode_cmd->pitches[0] * mode_cmd->height; | |
34 | ret = bochs_gem_create(dev, size, true, &gobj); | |
35 | if (ret) | |
36 | return ret; | |
37 | ||
38 | *gobj_p = gobj; | |
39 | return ret; | |
40 | } | |
41 | ||
42 | static int bochsfb_create(struct drm_fb_helper *helper, | |
43 | struct drm_fb_helper_surface_size *sizes) | |
44 | { | |
45 | struct bochs_device *bochs = | |
46 | container_of(helper, struct bochs_device, fb.helper); | |
47 | struct drm_device *dev = bochs->dev; | |
48 | struct fb_info *info; | |
49 | struct drm_framebuffer *fb; | |
50 | struct drm_mode_fb_cmd2 mode_cmd; | |
51 | struct device *device = &dev->pdev->dev; | |
52 | struct drm_gem_object *gobj = NULL; | |
53 | struct bochs_bo *bo = NULL; | |
54 | int size, ret; | |
55 | ||
56 | if (sizes->surface_bpp != 32) | |
57 | return -EINVAL; | |
58 | ||
59 | mode_cmd.width = sizes->surface_width; | |
60 | mode_cmd.height = sizes->surface_height; | |
61 | mode_cmd.pitches[0] = mode_cmd.width * ((sizes->surface_bpp + 7) / 8); | |
62 | mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, | |
63 | sizes->surface_depth); | |
64 | size = mode_cmd.pitches[0] * mode_cmd.height; | |
65 | ||
66 | /* alloc, pin & map bo */ | |
67 | ret = bochsfb_create_object(bochs, &mode_cmd, &gobj); | |
68 | if (ret) { | |
69 | DRM_ERROR("failed to create fbcon backing object %d\n", ret); | |
70 | return ret; | |
71 | } | |
72 | ||
73 | bo = gem_to_bochs_bo(gobj); | |
74 | ||
75 | ret = ttm_bo_reserve(&bo->bo, true, false, false, 0); | |
76 | if (ret) | |
77 | return ret; | |
78 | ||
79 | ret = bochs_bo_pin(bo, TTM_PL_FLAG_VRAM, NULL); | |
80 | if (ret) { | |
81 | DRM_ERROR("failed to pin fbcon\n"); | |
82 | ttm_bo_unreserve(&bo->bo); | |
83 | return ret; | |
84 | } | |
85 | ||
86 | ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, | |
87 | &bo->kmap); | |
88 | if (ret) { | |
89 | DRM_ERROR("failed to kmap fbcon\n"); | |
90 | ttm_bo_unreserve(&bo->bo); | |
91 | return ret; | |
92 | } | |
93 | ||
94 | ttm_bo_unreserve(&bo->bo); | |
95 | ||
96 | /* init fb device */ | |
97 | info = framebuffer_alloc(0, device); | |
98 | if (info == NULL) | |
99 | return -ENOMEM; | |
100 | ||
101 | info->par = &bochs->fb.helper; | |
102 | ||
103 | ret = bochs_framebuffer_init(bochs->dev, &bochs->fb.gfb, &mode_cmd, gobj); | |
104 | if (ret) | |
105 | return ret; | |
106 | ||
107 | bochs->fb.size = size; | |
108 | ||
109 | /* setup helper */ | |
110 | fb = &bochs->fb.gfb.base; | |
111 | bochs->fb.helper.fb = fb; | |
112 | bochs->fb.helper.fbdev = info; | |
113 | ||
114 | strcpy(info->fix.id, "bochsdrmfb"); | |
115 | ||
116 | info->flags = FBINFO_DEFAULT; | |
117 | info->fbops = &bochsfb_ops; | |
118 | ||
119 | drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); | |
120 | drm_fb_helper_fill_var(info, &bochs->fb.helper, sizes->fb_width, | |
121 | sizes->fb_height); | |
122 | ||
123 | info->screen_base = bo->kmap.virtual; | |
124 | info->screen_size = size; | |
125 | ||
126 | #if 0 | |
127 | /* FIXME: get this right for mmap(/dev/fb0) */ | |
128 | info->fix.smem_start = bochs_bo_mmap_offset(bo); | |
129 | info->fix.smem_len = size; | |
130 | #endif | |
131 | ||
132 | ret = fb_alloc_cmap(&info->cmap, 256, 0); | |
133 | if (ret) { | |
134 | DRM_ERROR("%s: can't allocate color map\n", info->fix.id); | |
135 | return -ENOMEM; | |
136 | } | |
137 | ||
138 | return 0; | |
139 | } | |
140 | ||
141 | static int bochs_fbdev_destroy(struct bochs_device *bochs) | |
142 | { | |
143 | struct bochs_framebuffer *gfb = &bochs->fb.gfb; | |
144 | struct fb_info *info; | |
145 | ||
146 | DRM_DEBUG_DRIVER("\n"); | |
147 | ||
148 | if (bochs->fb.helper.fbdev) { | |
149 | info = bochs->fb.helper.fbdev; | |
150 | ||
151 | unregister_framebuffer(info); | |
152 | if (info->cmap.len) | |
153 | fb_dealloc_cmap(&info->cmap); | |
154 | framebuffer_release(info); | |
155 | } | |
156 | ||
157 | if (gfb->obj) { | |
158 | drm_gem_object_unreference_unlocked(gfb->obj); | |
159 | gfb->obj = NULL; | |
160 | } | |
161 | ||
162 | drm_fb_helper_fini(&bochs->fb.helper); | |
163 | drm_framebuffer_unregister_private(&gfb->base); | |
164 | drm_framebuffer_cleanup(&gfb->base); | |
165 | ||
166 | return 0; | |
167 | } | |
168 | ||
169 | void bochs_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green, | |
170 | u16 blue, int regno) | |
171 | { | |
172 | } | |
173 | ||
174 | void bochs_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green, | |
175 | u16 *blue, int regno) | |
176 | { | |
177 | *red = regno; | |
178 | *green = regno; | |
179 | *blue = regno; | |
180 | } | |
181 | ||
182 | static struct drm_fb_helper_funcs bochs_fb_helper_funcs = { | |
183 | .gamma_set = bochs_fb_gamma_set, | |
184 | .gamma_get = bochs_fb_gamma_get, | |
185 | .fb_probe = bochsfb_create, | |
186 | }; | |
187 | ||
188 | int bochs_fbdev_init(struct bochs_device *bochs) | |
189 | { | |
190 | int ret; | |
191 | ||
192 | bochs->fb.helper.funcs = &bochs_fb_helper_funcs; | |
0a6659bd GH |
193 | |
194 | ret = drm_fb_helper_init(bochs->dev, &bochs->fb.helper, | |
195 | 1, 1); | |
196 | if (ret) | |
197 | return ret; | |
198 | ||
199 | drm_fb_helper_single_add_all_connectors(&bochs->fb.helper); | |
200 | drm_helper_disable_unused_functions(bochs->dev); | |
201 | drm_fb_helper_initial_config(&bochs->fb.helper, 32); | |
202 | ||
203 | bochs->fb.initialized = true; | |
204 | return 0; | |
205 | } | |
206 | ||
207 | void bochs_fbdev_fini(struct bochs_device *bochs) | |
208 | { | |
209 | if (!bochs->fb.initialized) | |
210 | return; | |
211 | ||
212 | bochs_fbdev_destroy(bochs); | |
213 | bochs->fb.initialized = false; | |
214 | } |