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.
10 /* ---------------------------------------------------------------------- */
12 static int bochsfb_mmap(struct fb_info *info,
13 struct vm_area_struct *vma)
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);
20 return ttm_fbdev_mmap(vma, &bo->bo);
23 static struct fb_ops bochsfb_ops = {
25 .fb_check_var = drm_fb_helper_check_var,
26 .fb_set_par = drm_fb_helper_set_par,
27 .fb_fillrect = drm_fb_helper_sys_fillrect,
28 .fb_copyarea = drm_fb_helper_sys_copyarea,
29 .fb_imageblit = drm_fb_helper_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,
33 .fb_mmap = bochsfb_mmap,
36 static int bochsfb_create_object(struct bochs_device *bochs,
37 const struct drm_mode_fb_cmd2 *mode_cmd,
38 struct drm_gem_object **gobj_p)
40 struct drm_device *dev = bochs->dev;
41 struct drm_gem_object *gobj;
45 size = mode_cmd->pitches[0] * mode_cmd->height;
46 ret = bochs_gem_create(dev, size, true, &gobj);
54 static int bochsfb_create(struct drm_fb_helper *helper,
55 struct drm_fb_helper_surface_size *sizes)
57 struct bochs_device *bochs =
58 container_of(helper, struct bochs_device, fb.helper);
60 struct drm_framebuffer *fb;
61 struct drm_mode_fb_cmd2 mode_cmd;
62 struct drm_gem_object *gobj = NULL;
63 struct bochs_bo *bo = NULL;
66 if (sizes->surface_bpp != 32)
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;
76 /* alloc, pin & map bo */
77 ret = bochsfb_create_object(bochs, &mode_cmd, &gobj);
79 DRM_ERROR("failed to create fbcon backing object %d\n", ret);
83 bo = gem_to_bochs_bo(gobj);
85 ret = ttm_bo_reserve(&bo->bo, true, false, NULL);
89 ret = bochs_bo_pin(bo, TTM_PL_FLAG_VRAM, NULL);
91 DRM_ERROR("failed to pin fbcon\n");
92 ttm_bo_unreserve(&bo->bo);
96 ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages,
99 DRM_ERROR("failed to kmap fbcon\n");
100 ttm_bo_unreserve(&bo->bo);
104 ttm_bo_unreserve(&bo->bo);
107 info = drm_fb_helper_alloc_fbi(helper);
109 return PTR_ERR(info);
111 info->par = &bochs->fb.helper;
113 ret = bochs_framebuffer_init(bochs->dev, &bochs->fb.gfb, &mode_cmd, gobj);
115 drm_fb_helper_release_fbi(helper);
119 bochs->fb.size = size;
122 fb = &bochs->fb.gfb.base;
123 bochs->fb.helper.fb = fb;
125 strcpy(info->fix.id, "bochsdrmfb");
127 info->flags = FBINFO_DEFAULT;
128 info->fbops = &bochsfb_ops;
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,
134 info->screen_base = bo->kmap.virtual;
135 info->screen_size = size;
137 drm_vma_offset_remove(&bo->bo.bdev->vma_manager, &bo->bo.vma_node);
138 info->fix.smem_start = 0;
139 info->fix.smem_len = size;
141 bochs->fb.initialized = true;
145 static int bochs_fbdev_destroy(struct bochs_device *bochs)
147 struct bochs_framebuffer *gfb = &bochs->fb.gfb;
149 DRM_DEBUG_DRIVER("\n");
151 drm_fb_helper_unregister_fbi(&bochs->fb.helper);
152 drm_fb_helper_release_fbi(&bochs->fb.helper);
155 drm_gem_object_unreference_unlocked(gfb->obj);
159 drm_framebuffer_unregister_private(&gfb->base);
160 drm_framebuffer_cleanup(&gfb->base);
165 static const struct drm_fb_helper_funcs bochs_fb_helper_funcs = {
166 .fb_probe = bochsfb_create,
169 int bochs_fbdev_init(struct bochs_device *bochs)
173 drm_fb_helper_prepare(bochs->dev, &bochs->fb.helper,
174 &bochs_fb_helper_funcs);
176 ret = drm_fb_helper_init(bochs->dev, &bochs->fb.helper,
181 ret = drm_fb_helper_single_add_all_connectors(&bochs->fb.helper);
185 drm_helper_disable_unused_functions(bochs->dev);
187 ret = drm_fb_helper_initial_config(&bochs->fb.helper, 32);
194 drm_fb_helper_fini(&bochs->fb.helper);
198 void bochs_fbdev_fini(struct bochs_device *bochs)
200 if (bochs->fb.initialized)
201 bochs_fbdev_destroy(bochs);
203 drm_fb_helper_fini(&bochs->fb.helper);
204 bochs->fb.initialized = false;