Dave Airlie | 414c453 | 2012-04-17 15:01:25 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2010 Matt Turner. |
| 3 | * Copyright 2012 Red Hat |
| 4 | * |
| 5 | * This file is subject to the terms and conditions of the GNU General |
| 6 | * Public License version 2. See the file COPYING in the main |
| 7 | * directory of this archive for more details. |
| 8 | * |
| 9 | * Authors: Matthew Garrett |
| 10 | * Matt Turner |
| 11 | * Dave Airlie |
| 12 | */ |
| 13 | #include <linux/module.h> |
David Howells | 760285e | 2012-10-02 18:01:07 +0100 | [diff] [blame] | 14 | #include <drm/drmP.h> |
| 15 | #include <drm/drm_fb_helper.h> |
Daniel Vetter | 76a39db | 2013-01-20 23:12:54 +0100 | [diff] [blame] | 16 | #include <drm/drm_crtc_helper.h> |
Dave Airlie | 414c453 | 2012-04-17 15:01:25 +0100 | [diff] [blame] | 17 | |
| 18 | #include <linux/fb.h> |
| 19 | |
| 20 | #include "mgag200_drv.h" |
| 21 | |
| 22 | static void mga_dirty_update(struct mga_fbdev *mfbdev, |
| 23 | int x, int y, int width, int height) |
| 24 | { |
| 25 | int i; |
| 26 | struct drm_gem_object *obj; |
| 27 | struct mgag200_bo *bo; |
| 28 | int src_offset, dst_offset; |
| 29 | int bpp = (mfbdev->mfb.base.bits_per_pixel + 7)/8; |
Maarten Lankhorst | a06b9a7 | 2013-06-27 13:38:25 +0200 | [diff] [blame] | 30 | int ret = -EBUSY; |
Dave Airlie | 414c453 | 2012-04-17 15:01:25 +0100 | [diff] [blame] | 31 | bool unmap = false; |
Dave Airlie | 6417195 | 2013-05-02 00:52:01 -0400 | [diff] [blame] | 32 | bool store_for_later = false; |
| 33 | int x2, y2; |
| 34 | unsigned long flags; |
Dave Airlie | 414c453 | 2012-04-17 15:01:25 +0100 | [diff] [blame] | 35 | |
| 36 | obj = mfbdev->mfb.obj; |
| 37 | bo = gem_to_mga_bo(obj); |
| 38 | |
Dave Airlie | 6417195 | 2013-05-02 00:52:01 -0400 | [diff] [blame] | 39 | /* |
| 40 | * try and reserve the BO, if we fail with busy |
| 41 | * then the BO is being moved and we should |
| 42 | * store up the damage until later. |
| 43 | */ |
Dave Airlie | f4b4718 | 2014-01-24 09:50:18 +1000 | [diff] [blame^] | 44 | if (!drm_can_sleep()) |
Maarten Lankhorst | a06b9a7 | 2013-06-27 13:38:25 +0200 | [diff] [blame] | 45 | ret = mgag200_bo_reserve(bo, true); |
Dave Airlie | 414c453 | 2012-04-17 15:01:25 +0100 | [diff] [blame] | 46 | if (ret) { |
Dave Airlie | 6417195 | 2013-05-02 00:52:01 -0400 | [diff] [blame] | 47 | if (ret != -EBUSY) |
| 48 | return; |
| 49 | |
| 50 | store_for_later = true; |
| 51 | } |
| 52 | |
| 53 | x2 = x + width - 1; |
| 54 | y2 = y + height - 1; |
| 55 | spin_lock_irqsave(&mfbdev->dirty_lock, flags); |
| 56 | |
| 57 | if (mfbdev->y1 < y) |
| 58 | y = mfbdev->y1; |
| 59 | if (mfbdev->y2 > y2) |
| 60 | y2 = mfbdev->y2; |
| 61 | if (mfbdev->x1 < x) |
| 62 | x = mfbdev->x1; |
| 63 | if (mfbdev->x2 > x2) |
| 64 | x2 = mfbdev->x2; |
| 65 | |
| 66 | if (store_for_later) { |
| 67 | mfbdev->x1 = x; |
| 68 | mfbdev->x2 = x2; |
| 69 | mfbdev->y1 = y; |
| 70 | mfbdev->y2 = y2; |
| 71 | spin_unlock_irqrestore(&mfbdev->dirty_lock, flags); |
Dave Airlie | 414c453 | 2012-04-17 15:01:25 +0100 | [diff] [blame] | 72 | return; |
| 73 | } |
| 74 | |
Dave Airlie | 6417195 | 2013-05-02 00:52:01 -0400 | [diff] [blame] | 75 | mfbdev->x1 = mfbdev->y1 = INT_MAX; |
| 76 | mfbdev->x2 = mfbdev->y2 = 0; |
| 77 | spin_unlock_irqrestore(&mfbdev->dirty_lock, flags); |
| 78 | |
Dave Airlie | 414c453 | 2012-04-17 15:01:25 +0100 | [diff] [blame] | 79 | if (!bo->kmap.virtual) { |
| 80 | ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &bo->kmap); |
| 81 | if (ret) { |
| 82 | DRM_ERROR("failed to kmap fb updates\n"); |
| 83 | mgag200_bo_unreserve(bo); |
| 84 | return; |
| 85 | } |
| 86 | unmap = true; |
| 87 | } |
Dave Airlie | 6417195 | 2013-05-02 00:52:01 -0400 | [diff] [blame] | 88 | for (i = y; i <= y2; i++) { |
Dave Airlie | 414c453 | 2012-04-17 15:01:25 +0100 | [diff] [blame] | 89 | /* assume equal stride for now */ |
| 90 | src_offset = dst_offset = i * mfbdev->mfb.base.pitches[0] + (x * bpp); |
Dave Airlie | 6417195 | 2013-05-02 00:52:01 -0400 | [diff] [blame] | 91 | memcpy_toio(bo->kmap.virtual + src_offset, mfbdev->sysram + src_offset, (x2 - x + 1) * bpp); |
Dave Airlie | 414c453 | 2012-04-17 15:01:25 +0100 | [diff] [blame] | 92 | |
| 93 | } |
| 94 | if (unmap) |
| 95 | ttm_bo_kunmap(&bo->kmap); |
| 96 | |
| 97 | mgag200_bo_unreserve(bo); |
| 98 | } |
| 99 | |
| 100 | static void mga_fillrect(struct fb_info *info, |
| 101 | const struct fb_fillrect *rect) |
| 102 | { |
| 103 | struct mga_fbdev *mfbdev = info->par; |
| 104 | sys_fillrect(info, rect); |
| 105 | mga_dirty_update(mfbdev, rect->dx, rect->dy, rect->width, |
| 106 | rect->height); |
| 107 | } |
| 108 | |
| 109 | static void mga_copyarea(struct fb_info *info, |
| 110 | const struct fb_copyarea *area) |
| 111 | { |
| 112 | struct mga_fbdev *mfbdev = info->par; |
| 113 | sys_copyarea(info, area); |
| 114 | mga_dirty_update(mfbdev, area->dx, area->dy, area->width, |
| 115 | area->height); |
| 116 | } |
| 117 | |
| 118 | static void mga_imageblit(struct fb_info *info, |
| 119 | const struct fb_image *image) |
| 120 | { |
| 121 | struct mga_fbdev *mfbdev = info->par; |
| 122 | sys_imageblit(info, image); |
| 123 | mga_dirty_update(mfbdev, image->dx, image->dy, image->width, |
| 124 | image->height); |
| 125 | } |
| 126 | |
| 127 | |
| 128 | static struct fb_ops mgag200fb_ops = { |
| 129 | .owner = THIS_MODULE, |
| 130 | .fb_check_var = drm_fb_helper_check_var, |
| 131 | .fb_set_par = drm_fb_helper_set_par, |
| 132 | .fb_fillrect = mga_fillrect, |
| 133 | .fb_copyarea = mga_copyarea, |
| 134 | .fb_imageblit = mga_imageblit, |
| 135 | .fb_pan_display = drm_fb_helper_pan_display, |
| 136 | .fb_blank = drm_fb_helper_blank, |
| 137 | .fb_setcmap = drm_fb_helper_setcmap, |
| 138 | }; |
| 139 | |
| 140 | static int mgag200fb_create_object(struct mga_fbdev *afbdev, |
| 141 | struct drm_mode_fb_cmd2 *mode_cmd, |
| 142 | struct drm_gem_object **gobj_p) |
| 143 | { |
| 144 | struct drm_device *dev = afbdev->helper.dev; |
Dave Airlie | 414c453 | 2012-04-17 15:01:25 +0100 | [diff] [blame] | 145 | u32 size; |
| 146 | struct drm_gem_object *gobj; |
Dave Airlie | 414c453 | 2012-04-17 15:01:25 +0100 | [diff] [blame] | 147 | int ret = 0; |
Dave Airlie | 414c453 | 2012-04-17 15:01:25 +0100 | [diff] [blame] | 148 | |
| 149 | size = mode_cmd->pitches[0] * mode_cmd->height; |
| 150 | ret = mgag200_gem_create(dev, size, true, &gobj); |
| 151 | if (ret) |
| 152 | return ret; |
| 153 | |
| 154 | *gobj_p = gobj; |
| 155 | return ret; |
| 156 | } |
| 157 | |
Daniel Vetter | cd5428a | 2013-01-21 23:42:49 +0100 | [diff] [blame] | 158 | static int mgag200fb_create(struct drm_fb_helper *helper, |
Dave Airlie | 414c453 | 2012-04-17 15:01:25 +0100 | [diff] [blame] | 159 | struct drm_fb_helper_surface_size *sizes) |
| 160 | { |
Daniel Vetter | cd5428a | 2013-01-21 23:42:49 +0100 | [diff] [blame] | 161 | struct mga_fbdev *mfbdev = (struct mga_fbdev *)helper; |
Dave Airlie | 414c453 | 2012-04-17 15:01:25 +0100 | [diff] [blame] | 162 | struct drm_device *dev = mfbdev->helper.dev; |
| 163 | struct drm_mode_fb_cmd2 mode_cmd; |
| 164 | struct mga_device *mdev = dev->dev_private; |
| 165 | struct fb_info *info; |
| 166 | struct drm_framebuffer *fb; |
| 167 | struct drm_gem_object *gobj = NULL; |
| 168 | struct device *device = &dev->pdev->dev; |
| 169 | struct mgag200_bo *bo; |
| 170 | int ret; |
| 171 | void *sysram; |
| 172 | int size; |
| 173 | |
| 174 | mode_cmd.width = sizes->surface_width; |
| 175 | mode_cmd.height = sizes->surface_height; |
| 176 | mode_cmd.pitches[0] = mode_cmd.width * ((sizes->surface_bpp + 7) / 8); |
| 177 | |
| 178 | mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, |
| 179 | sizes->surface_depth); |
| 180 | size = mode_cmd.pitches[0] * mode_cmd.height; |
| 181 | |
| 182 | ret = mgag200fb_create_object(mfbdev, &mode_cmd, &gobj); |
| 183 | if (ret) { |
| 184 | DRM_ERROR("failed to create fbcon backing object %d\n", ret); |
| 185 | return ret; |
| 186 | } |
| 187 | bo = gem_to_mga_bo(gobj); |
| 188 | |
| 189 | sysram = vmalloc(size); |
| 190 | if (!sysram) |
| 191 | return -ENOMEM; |
| 192 | |
| 193 | info = framebuffer_alloc(0, device); |
| 194 | if (info == NULL) |
| 195 | return -ENOMEM; |
| 196 | |
| 197 | info->par = mfbdev; |
| 198 | |
| 199 | ret = mgag200_framebuffer_init(dev, &mfbdev->mfb, &mode_cmd, gobj); |
| 200 | if (ret) |
| 201 | return ret; |
| 202 | |
| 203 | mfbdev->sysram = sysram; |
| 204 | mfbdev->size = size; |
| 205 | |
| 206 | fb = &mfbdev->mfb.base; |
| 207 | |
| 208 | /* setup helper */ |
| 209 | mfbdev->helper.fb = fb; |
| 210 | mfbdev->helper.fbdev = info; |
| 211 | |
| 212 | ret = fb_alloc_cmap(&info->cmap, 256, 0); |
| 213 | if (ret) { |
| 214 | DRM_ERROR("%s: can't allocate color map\n", info->fix.id); |
| 215 | ret = -ENOMEM; |
| 216 | goto out; |
| 217 | } |
| 218 | |
| 219 | strcpy(info->fix.id, "mgadrmfb"); |
| 220 | |
| 221 | info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT; |
| 222 | info->fbops = &mgag200fb_ops; |
| 223 | |
| 224 | /* setup aperture base/size for vesafb takeover */ |
| 225 | info->apertures = alloc_apertures(1); |
| 226 | if (!info->apertures) { |
| 227 | ret = -ENOMEM; |
| 228 | goto out; |
| 229 | } |
| 230 | info->apertures->ranges[0].base = mdev->dev->mode_config.fb_base; |
| 231 | info->apertures->ranges[0].size = mdev->mc.vram_size; |
| 232 | |
| 233 | drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); |
| 234 | drm_fb_helper_fill_var(info, &mfbdev->helper, sizes->fb_width, |
| 235 | sizes->fb_height); |
| 236 | |
| 237 | info->screen_base = sysram; |
| 238 | info->screen_size = size; |
| 239 | info->pixmap.flags = FB_PIXMAP_SYSTEM; |
| 240 | |
| 241 | DRM_DEBUG_KMS("allocated %dx%d\n", |
| 242 | fb->width, fb->height); |
| 243 | return 0; |
| 244 | out: |
| 245 | return ret; |
| 246 | } |
| 247 | |
Dave Airlie | 414c453 | 2012-04-17 15:01:25 +0100 | [diff] [blame] | 248 | static int mga_fbdev_destroy(struct drm_device *dev, |
| 249 | struct mga_fbdev *mfbdev) |
| 250 | { |
| 251 | struct fb_info *info; |
| 252 | struct mga_framebuffer *mfb = &mfbdev->mfb; |
| 253 | |
| 254 | if (mfbdev->helper.fbdev) { |
| 255 | info = mfbdev->helper.fbdev; |
| 256 | |
| 257 | unregister_framebuffer(info); |
| 258 | if (info->cmap.len) |
| 259 | fb_dealloc_cmap(&info->cmap); |
| 260 | framebuffer_release(info); |
| 261 | } |
| 262 | |
| 263 | if (mfb->obj) { |
| 264 | drm_gem_object_unreference_unlocked(mfb->obj); |
| 265 | mfb->obj = NULL; |
| 266 | } |
| 267 | drm_fb_helper_fini(&mfbdev->helper); |
| 268 | vfree(mfbdev->sysram); |
Daniel Vetter | 3620636 | 2012-12-10 20:42:17 +0100 | [diff] [blame] | 269 | drm_framebuffer_unregister_private(&mfb->base); |
Dave Airlie | 414c453 | 2012-04-17 15:01:25 +0100 | [diff] [blame] | 270 | drm_framebuffer_cleanup(&mfb->base); |
| 271 | |
| 272 | return 0; |
| 273 | } |
| 274 | |
| 275 | static struct drm_fb_helper_funcs mga_fb_helper_funcs = { |
| 276 | .gamma_set = mga_crtc_fb_gamma_set, |
| 277 | .gamma_get = mga_crtc_fb_gamma_get, |
Daniel Vetter | cd5428a | 2013-01-21 23:42:49 +0100 | [diff] [blame] | 278 | .fb_probe = mgag200fb_create, |
Dave Airlie | 414c453 | 2012-04-17 15:01:25 +0100 | [diff] [blame] | 279 | }; |
| 280 | |
| 281 | int mgag200_fbdev_init(struct mga_device *mdev) |
| 282 | { |
| 283 | struct mga_fbdev *mfbdev; |
| 284 | int ret; |
Dave Airlie | 918be88 | 2014-01-21 01:47:46 -0500 | [diff] [blame] | 285 | int bpp_sel = 32; |
| 286 | |
| 287 | /* prefer 16bpp on low end gpus with limited VRAM */ |
| 288 | if (IS_G200_SE(mdev) && mdev->mc.vram_size < (2048*1024)) |
| 289 | bpp_sel = 16; |
Dave Airlie | 414c453 | 2012-04-17 15:01:25 +0100 | [diff] [blame] | 290 | |
Christopher Harvey | c2ed884 | 2013-04-05 16:15:30 +0000 | [diff] [blame] | 291 | mfbdev = devm_kzalloc(mdev->dev->dev, sizeof(struct mga_fbdev), GFP_KERNEL); |
Dave Airlie | 414c453 | 2012-04-17 15:01:25 +0100 | [diff] [blame] | 292 | if (!mfbdev) |
| 293 | return -ENOMEM; |
| 294 | |
| 295 | mdev->mfbdev = mfbdev; |
| 296 | mfbdev->helper.funcs = &mga_fb_helper_funcs; |
Dave Airlie | 6417195 | 2013-05-02 00:52:01 -0400 | [diff] [blame] | 297 | spin_lock_init(&mfbdev->dirty_lock); |
Dave Airlie | 414c453 | 2012-04-17 15:01:25 +0100 | [diff] [blame] | 298 | |
| 299 | ret = drm_fb_helper_init(mdev->dev, &mfbdev->helper, |
| 300 | mdev->num_crtc, MGAG200FB_CONN_LIMIT); |
Christopher Harvey | c2ed884 | 2013-04-05 16:15:30 +0000 | [diff] [blame] | 301 | if (ret) |
Dave Airlie | 414c453 | 2012-04-17 15:01:25 +0100 | [diff] [blame] | 302 | return ret; |
Christopher Harvey | c2ed884 | 2013-04-05 16:15:30 +0000 | [diff] [blame] | 303 | |
Dave Airlie | 414c453 | 2012-04-17 15:01:25 +0100 | [diff] [blame] | 304 | drm_fb_helper_single_add_all_connectors(&mfbdev->helper); |
Daniel Vetter | 76a39db | 2013-01-20 23:12:54 +0100 | [diff] [blame] | 305 | |
| 306 | /* disable all the possible outputs/crtcs before entering KMS mode */ |
| 307 | drm_helper_disable_unused_functions(mdev->dev); |
| 308 | |
Dave Airlie | 918be88 | 2014-01-21 01:47:46 -0500 | [diff] [blame] | 309 | drm_fb_helper_initial_config(&mfbdev->helper, bpp_sel); |
Dave Airlie | 414c453 | 2012-04-17 15:01:25 +0100 | [diff] [blame] | 310 | |
| 311 | return 0; |
| 312 | } |
| 313 | |
| 314 | void mgag200_fbdev_fini(struct mga_device *mdev) |
| 315 | { |
| 316 | if (!mdev->mfbdev) |
| 317 | return; |
| 318 | |
| 319 | mga_fbdev_destroy(mdev->dev, mdev->mfbdev); |
Dave Airlie | 414c453 | 2012-04-17 15:01:25 +0100 | [diff] [blame] | 320 | } |