Gerd Hoffmann | 0a6659b | 2013-12-17 18:04:46 +0100 | [diff] [blame] | 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 | |
Thierry Reding | ee3939e | 2014-07-21 13:15:51 +0200 | [diff] [blame] | 75 | ret = ttm_bo_reserve(&bo->bo, true, false, false, NULL); |
Gerd Hoffmann | 0a6659b | 2013-12-17 18:04:46 +0100 | [diff] [blame] | 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 | |
Thierry Reding | 3a49387 | 2014-06-27 17:19:23 +0200 | [diff] [blame] | 182 | static const struct drm_fb_helper_funcs bochs_fb_helper_funcs = { |
Gerd Hoffmann | 0a6659b | 2013-12-17 18:04:46 +0100 | [diff] [blame] | 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 | |
Thierry Reding | 10a2310 | 2014-06-27 17:19:24 +0200 | [diff] [blame] | 192 | drm_fb_helper_prepare(bochs->dev, &bochs->fb.helper, |
| 193 | &bochs_fb_helper_funcs); |
Gerd Hoffmann | 0a6659b | 2013-12-17 18:04:46 +0100 | [diff] [blame] | 194 | |
| 195 | ret = drm_fb_helper_init(bochs->dev, &bochs->fb.helper, |
| 196 | 1, 1); |
| 197 | if (ret) |
| 198 | return ret; |
| 199 | |
| 200 | drm_fb_helper_single_add_all_connectors(&bochs->fb.helper); |
| 201 | drm_helper_disable_unused_functions(bochs->dev); |
| 202 | drm_fb_helper_initial_config(&bochs->fb.helper, 32); |
| 203 | |
| 204 | bochs->fb.initialized = true; |
| 205 | return 0; |
| 206 | } |
| 207 | |
| 208 | void bochs_fbdev_fini(struct bochs_device *bochs) |
| 209 | { |
| 210 | if (!bochs->fb.initialized) |
| 211 | return; |
| 212 | |
| 213 | bochs_fbdev_destroy(bochs); |
| 214 | bochs->fb.initialized = false; |
| 215 | } |