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 | /* ---------------------------------------------------------------------- */ | |
11 | ||
49b70a31 GH |
12 | static int bochsfb_mmap(struct fb_info *info, |
13 | struct vm_area_struct *vma) | |
14 | { | |
15 | struct drm_fb_helper *fb_helper = info->par; | |
16 | struct bochs_device *bochs = | |
17 | container_of(fb_helper, struct bochs_device, fb.helper); | |
18 | struct bochs_bo *bo = gem_to_bochs_bo(bochs->fb.gfb.obj); | |
19 | ||
20 | return ttm_fbdev_mmap(vma, &bo->bo); | |
21 | } | |
22 | ||
0a6659bd GH |
23 | static struct fb_ops bochsfb_ops = { |
24 | .owner = THIS_MODULE, | |
25 | .fb_check_var = drm_fb_helper_check_var, | |
26 | .fb_set_par = drm_fb_helper_set_par, | |
27 | .fb_fillrect = sys_fillrect, | |
28 | .fb_copyarea = sys_copyarea, | |
29 | .fb_imageblit = sys_imageblit, | |
30 | .fb_pan_display = drm_fb_helper_pan_display, | |
31 | .fb_blank = drm_fb_helper_blank, | |
32 | .fb_setcmap = drm_fb_helper_setcmap, | |
49b70a31 | 33 | .fb_mmap = bochsfb_mmap, |
0a6659bd GH |
34 | }; |
35 | ||
36 | static int bochsfb_create_object(struct bochs_device *bochs, | |
37 | struct drm_mode_fb_cmd2 *mode_cmd, | |
38 | struct drm_gem_object **gobj_p) | |
39 | { | |
40 | struct drm_device *dev = bochs->dev; | |
41 | struct drm_gem_object *gobj; | |
42 | u32 size; | |
43 | int ret = 0; | |
44 | ||
45 | size = mode_cmd->pitches[0] * mode_cmd->height; | |
46 | ret = bochs_gem_create(dev, size, true, &gobj); | |
47 | if (ret) | |
48 | return ret; | |
49 | ||
50 | *gobj_p = gobj; | |
51 | return ret; | |
52 | } | |
53 | ||
54 | static int bochsfb_create(struct drm_fb_helper *helper, | |
55 | struct drm_fb_helper_surface_size *sizes) | |
56 | { | |
57 | struct bochs_device *bochs = | |
58 | container_of(helper, struct bochs_device, fb.helper); | |
59 | struct drm_device *dev = bochs->dev; | |
60 | struct fb_info *info; | |
61 | struct drm_framebuffer *fb; | |
62 | struct drm_mode_fb_cmd2 mode_cmd; | |
63 | struct device *device = &dev->pdev->dev; | |
64 | struct drm_gem_object *gobj = NULL; | |
65 | struct bochs_bo *bo = NULL; | |
66 | int size, ret; | |
67 | ||
68 | if (sizes->surface_bpp != 32) | |
69 | return -EINVAL; | |
70 | ||
71 | mode_cmd.width = sizes->surface_width; | |
72 | mode_cmd.height = sizes->surface_height; | |
73 | mode_cmd.pitches[0] = mode_cmd.width * ((sizes->surface_bpp + 7) / 8); | |
74 | mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, | |
75 | sizes->surface_depth); | |
76 | size = mode_cmd.pitches[0] * mode_cmd.height; | |
77 | ||
78 | /* alloc, pin & map bo */ | |
79 | ret = bochsfb_create_object(bochs, &mode_cmd, &gobj); | |
80 | if (ret) { | |
81 | DRM_ERROR("failed to create fbcon backing object %d\n", ret); | |
82 | return ret; | |
83 | } | |
84 | ||
85 | bo = gem_to_bochs_bo(gobj); | |
86 | ||
ee3939e0 | 87 | ret = ttm_bo_reserve(&bo->bo, true, false, false, NULL); |
0a6659bd GH |
88 | if (ret) |
89 | return ret; | |
90 | ||
91 | ret = bochs_bo_pin(bo, TTM_PL_FLAG_VRAM, NULL); | |
92 | if (ret) { | |
93 | DRM_ERROR("failed to pin fbcon\n"); | |
94 | ttm_bo_unreserve(&bo->bo); | |
95 | return ret; | |
96 | } | |
97 | ||
98 | ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, | |
99 | &bo->kmap); | |
100 | if (ret) { | |
101 | DRM_ERROR("failed to kmap fbcon\n"); | |
102 | ttm_bo_unreserve(&bo->bo); | |
103 | return ret; | |
104 | } | |
105 | ||
106 | ttm_bo_unreserve(&bo->bo); | |
107 | ||
108 | /* init fb device */ | |
109 | info = framebuffer_alloc(0, device); | |
110 | if (info == NULL) | |
111 | return -ENOMEM; | |
112 | ||
113 | info->par = &bochs->fb.helper; | |
114 | ||
115 | ret = bochs_framebuffer_init(bochs->dev, &bochs->fb.gfb, &mode_cmd, gobj); | |
116 | if (ret) | |
117 | return ret; | |
118 | ||
119 | bochs->fb.size = size; | |
120 | ||
121 | /* setup helper */ | |
122 | fb = &bochs->fb.gfb.base; | |
123 | bochs->fb.helper.fb = fb; | |
124 | bochs->fb.helper.fbdev = info; | |
125 | ||
126 | strcpy(info->fix.id, "bochsdrmfb"); | |
127 | ||
128 | info->flags = FBINFO_DEFAULT; | |
129 | info->fbops = &bochsfb_ops; | |
130 | ||
131 | drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); | |
132 | drm_fb_helper_fill_var(info, &bochs->fb.helper, sizes->fb_width, | |
133 | sizes->fb_height); | |
134 | ||
135 | info->screen_base = bo->kmap.virtual; | |
136 | info->screen_size = size; | |
137 | ||
49b70a31 GH |
138 | drm_vma_offset_remove(&bo->bo.bdev->vma_manager, &bo->bo.vma_node); |
139 | info->fix.smem_start = 0; | |
0a6659bd | 140 | info->fix.smem_len = size; |
0a6659bd GH |
141 | |
142 | ret = fb_alloc_cmap(&info->cmap, 256, 0); | |
143 | if (ret) { | |
144 | DRM_ERROR("%s: can't allocate color map\n", info->fix.id); | |
145 | return -ENOMEM; | |
146 | } | |
147 | ||
148 | return 0; | |
149 | } | |
150 | ||
151 | static int bochs_fbdev_destroy(struct bochs_device *bochs) | |
152 | { | |
153 | struct bochs_framebuffer *gfb = &bochs->fb.gfb; | |
154 | struct fb_info *info; | |
155 | ||
156 | DRM_DEBUG_DRIVER("\n"); | |
157 | ||
158 | if (bochs->fb.helper.fbdev) { | |
159 | info = bochs->fb.helper.fbdev; | |
160 | ||
161 | unregister_framebuffer(info); | |
162 | if (info->cmap.len) | |
163 | fb_dealloc_cmap(&info->cmap); | |
164 | framebuffer_release(info); | |
165 | } | |
166 | ||
167 | if (gfb->obj) { | |
168 | drm_gem_object_unreference_unlocked(gfb->obj); | |
169 | gfb->obj = NULL; | |
170 | } | |
171 | ||
172 | drm_fb_helper_fini(&bochs->fb.helper); | |
173 | drm_framebuffer_unregister_private(&gfb->base); | |
174 | drm_framebuffer_cleanup(&gfb->base); | |
175 | ||
176 | return 0; | |
177 | } | |
178 | ||
179 | void bochs_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green, | |
180 | u16 blue, int regno) | |
181 | { | |
182 | } | |
183 | ||
184 | void bochs_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green, | |
185 | u16 *blue, int regno) | |
186 | { | |
187 | *red = regno; | |
188 | *green = regno; | |
189 | *blue = regno; | |
190 | } | |
191 | ||
3a493879 | 192 | static const struct drm_fb_helper_funcs bochs_fb_helper_funcs = { |
0a6659bd GH |
193 | .gamma_set = bochs_fb_gamma_set, |
194 | .gamma_get = bochs_fb_gamma_get, | |
195 | .fb_probe = bochsfb_create, | |
196 | }; | |
197 | ||
198 | int bochs_fbdev_init(struct bochs_device *bochs) | |
199 | { | |
200 | int ret; | |
201 | ||
10a23102 TR |
202 | drm_fb_helper_prepare(bochs->dev, &bochs->fb.helper, |
203 | &bochs_fb_helper_funcs); | |
0a6659bd GH |
204 | |
205 | ret = drm_fb_helper_init(bochs->dev, &bochs->fb.helper, | |
206 | 1, 1); | |
207 | if (ret) | |
208 | return ret; | |
209 | ||
01934c2a TR |
210 | ret = drm_fb_helper_single_add_all_connectors(&bochs->fb.helper); |
211 | if (ret) | |
212 | goto fini; | |
213 | ||
0a6659bd | 214 | drm_helper_disable_unused_functions(bochs->dev); |
01934c2a TR |
215 | |
216 | ret = drm_fb_helper_initial_config(&bochs->fb.helper, 32); | |
217 | if (ret) | |
218 | goto fini; | |
0a6659bd GH |
219 | |
220 | bochs->fb.initialized = true; | |
221 | return 0; | |
01934c2a TR |
222 | |
223 | fini: | |
224 | drm_fb_helper_fini(&bochs->fb.helper); | |
225 | return ret; | |
0a6659bd GH |
226 | } |
227 | ||
228 | void bochs_fbdev_fini(struct bochs_device *bochs) | |
229 | { | |
230 | if (!bochs->fb.initialized) | |
231 | return; | |
232 | ||
233 | bochs_fbdev_destroy(bochs); | |
234 | bochs->fb.initialized = false; | |
235 | } |