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, | |
6a752972 AT |
27 | .fb_fillrect = drm_fb_helper_sys_fillrect, |
28 | .fb_copyarea = drm_fb_helper_sys_copyarea, | |
29 | .fb_imageblit = drm_fb_helper_sys_imageblit, | |
0a6659bd GH |
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, | |
1eb83451 | 37 | const struct drm_mode_fb_cmd2 *mode_cmd, |
0a6659bd GH |
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); | |
0a6659bd GH |
59 | struct fb_info *info; |
60 | struct drm_framebuffer *fb; | |
61 | struct drm_mode_fb_cmd2 mode_cmd; | |
0a6659bd GH |
62 | struct drm_gem_object *gobj = NULL; |
63 | struct bochs_bo *bo = NULL; | |
64 | int size, ret; | |
65 | ||
66 | if (sizes->surface_bpp != 32) | |
67 | return -EINVAL; | |
68 | ||
69 | mode_cmd.width = sizes->surface_width; | |
70 | mode_cmd.height = sizes->surface_height; | |
71 | mode_cmd.pitches[0] = mode_cmd.width * ((sizes->surface_bpp + 7) / 8); | |
72 | mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, | |
73 | sizes->surface_depth); | |
74 | size = mode_cmd.pitches[0] * mode_cmd.height; | |
75 | ||
76 | /* alloc, pin & map bo */ | |
77 | ret = bochsfb_create_object(bochs, &mode_cmd, &gobj); | |
78 | if (ret) { | |
79 | DRM_ERROR("failed to create fbcon backing object %d\n", ret); | |
80 | return ret; | |
81 | } | |
82 | ||
83 | bo = gem_to_bochs_bo(gobj); | |
84 | ||
ee3939e0 | 85 | ret = ttm_bo_reserve(&bo->bo, true, false, false, NULL); |
0a6659bd GH |
86 | if (ret) |
87 | return ret; | |
88 | ||
89 | ret = bochs_bo_pin(bo, TTM_PL_FLAG_VRAM, NULL); | |
90 | if (ret) { | |
91 | DRM_ERROR("failed to pin fbcon\n"); | |
92 | ttm_bo_unreserve(&bo->bo); | |
93 | return ret; | |
94 | } | |
95 | ||
96 | ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, | |
97 | &bo->kmap); | |
98 | if (ret) { | |
99 | DRM_ERROR("failed to kmap fbcon\n"); | |
100 | ttm_bo_unreserve(&bo->bo); | |
101 | return ret; | |
102 | } | |
103 | ||
104 | ttm_bo_unreserve(&bo->bo); | |
105 | ||
106 | /* init fb device */ | |
6a752972 AT |
107 | info = drm_fb_helper_alloc_fbi(helper); |
108 | if (IS_ERR(info)) | |
109 | return PTR_ERR(info); | |
0a6659bd GH |
110 | |
111 | info->par = &bochs->fb.helper; | |
112 | ||
113 | ret = bochs_framebuffer_init(bochs->dev, &bochs->fb.gfb, &mode_cmd, gobj); | |
6a752972 AT |
114 | if (ret) { |
115 | drm_fb_helper_release_fbi(helper); | |
0a6659bd | 116 | return ret; |
6a752972 | 117 | } |
0a6659bd GH |
118 | |
119 | bochs->fb.size = size; | |
120 | ||
121 | /* setup helper */ | |
122 | fb = &bochs->fb.gfb.base; | |
123 | bochs->fb.helper.fb = fb; | |
0a6659bd GH |
124 | |
125 | strcpy(info->fix.id, "bochsdrmfb"); | |
126 | ||
127 | info->flags = FBINFO_DEFAULT; | |
128 | info->fbops = &bochsfb_ops; | |
129 | ||
130 | drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); | |
131 | drm_fb_helper_fill_var(info, &bochs->fb.helper, sizes->fb_width, | |
132 | sizes->fb_height); | |
133 | ||
134 | info->screen_base = bo->kmap.virtual; | |
135 | info->screen_size = size; | |
136 | ||
49b70a31 GH |
137 | drm_vma_offset_remove(&bo->bo.bdev->vma_manager, &bo->bo.vma_node); |
138 | info->fix.smem_start = 0; | |
0a6659bd | 139 | info->fix.smem_len = size; |
0a6659bd | 140 | |
0a6659bd GH |
141 | return 0; |
142 | } | |
143 | ||
144 | static int bochs_fbdev_destroy(struct bochs_device *bochs) | |
145 | { | |
146 | struct bochs_framebuffer *gfb = &bochs->fb.gfb; | |
0a6659bd GH |
147 | |
148 | DRM_DEBUG_DRIVER("\n"); | |
149 | ||
6a752972 AT |
150 | drm_fb_helper_unregister_fbi(&bochs->fb.helper); |
151 | drm_fb_helper_release_fbi(&bochs->fb.helper); | |
0a6659bd GH |
152 | |
153 | if (gfb->obj) { | |
154 | drm_gem_object_unreference_unlocked(gfb->obj); | |
155 | gfb->obj = NULL; | |
156 | } | |
157 | ||
158 | drm_fb_helper_fini(&bochs->fb.helper); | |
159 | drm_framebuffer_unregister_private(&gfb->base); | |
160 | drm_framebuffer_cleanup(&gfb->base); | |
161 | ||
162 | return 0; | |
163 | } | |
164 | ||
3a493879 | 165 | static const struct drm_fb_helper_funcs bochs_fb_helper_funcs = { |
0a6659bd GH |
166 | .fb_probe = bochsfb_create, |
167 | }; | |
168 | ||
169 | int bochs_fbdev_init(struct bochs_device *bochs) | |
170 | { | |
171 | int ret; | |
172 | ||
10a23102 TR |
173 | drm_fb_helper_prepare(bochs->dev, &bochs->fb.helper, |
174 | &bochs_fb_helper_funcs); | |
0a6659bd GH |
175 | |
176 | ret = drm_fb_helper_init(bochs->dev, &bochs->fb.helper, | |
177 | 1, 1); | |
178 | if (ret) | |
179 | return ret; | |
180 | ||
01934c2a TR |
181 | ret = drm_fb_helper_single_add_all_connectors(&bochs->fb.helper); |
182 | if (ret) | |
183 | goto fini; | |
184 | ||
0a6659bd | 185 | drm_helper_disable_unused_functions(bochs->dev); |
01934c2a TR |
186 | |
187 | ret = drm_fb_helper_initial_config(&bochs->fb.helper, 32); | |
188 | if (ret) | |
189 | goto fini; | |
0a6659bd GH |
190 | |
191 | bochs->fb.initialized = true; | |
192 | return 0; | |
01934c2a TR |
193 | |
194 | fini: | |
195 | drm_fb_helper_fini(&bochs->fb.helper); | |
196 | return ret; | |
0a6659bd GH |
197 | } |
198 | ||
199 | void bochs_fbdev_fini(struct bochs_device *bochs) | |
200 | { | |
201 | if (!bochs->fb.initialized) | |
202 | return; | |
203 | ||
204 | bochs_fbdev_destroy(bochs); | |
205 | bochs->fb.initialized = false; | |
206 | } |