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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 | /* $Id: sunfb.c,v 1.26 1997/07/17 02:21:48 davem Exp $ * sunfb.c: Sun generic frame buffer support. * * Copyright (C) 1995, 1996 Miguel de Icaza (miguel@nuclecu.unam.mx) * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) * * Added getcmap ioctl, may, 96 * Support for multiple fbs, sep, 96 */ #include <linux/sched.h> #include <linux/timer.h> #include <linux/interrupt.h> #include <linux/tty.h> #include <linux/tty_flip.h> #include <linux/kernel.h> #include <linux/string.h> #include <linux/errno.h> #include <linux/kd.h> #include <linux/malloc.h> #include <linux/major.h> #include <linux/mm.h> #include <linux/types.h> #include <linux/proc_fs.h> #include <asm/system.h> #include <asm/uaccess.h> #include <asm/page.h> #include <asm/pgtable.h> #include <asm/bitops.h> #include <asm/oplib.h> #include <asm/sbus.h> #include <asm/fbio.h> #include <asm/io.h> #include <linux/kbd_kern.h> #include <linux/vt_kern.h> #include <linux/consolemap.h> #include <linux/selection.h> #include <linux/console_struct.h> #include "fb.h" extern void set_other_palette (int); extern void sun_clear_fb(int); extern void set_cursor (int); #define FB_SETUP(err) \ int minor = FB_DEV (inode->i_rdev); \ \ if (minor >= fbinfos || \ fbinfo [minor].type.fb_type == FBTYPE_NOTYPE) \ return -(err); static int fb_open (struct inode * inode, struct file * file) { FB_SETUP(EBADF) if (fbinfo [minor].open) return -EBUSY; fbinfo [minor].mmaped = 0; fbinfo [minor].open = 1; return 0; } static int fb_ioctl (struct inode *inode, struct file *file, uint cmd, unsigned long arg) { fbinfo_t *fb; struct fbcmap *cmap; int i; FB_SETUP(EBADF) fb = &fbinfo [minor]; switch (cmd){ case FBIOGTYPE: /* return frame buffer type */ copy_to_user_ret((struct fbtype *)arg, &fb->type, sizeof(struct fbtype), -EFAULT); break; case FBIOGATTR:{ struct fbgattr *fba = (struct fbgattr *) arg; i = verify_area (VERIFY_WRITE, (void *) arg, sizeof (struct fbgattr)); if (i) return i; __put_user_ret(fb->real_type, &fba->real_type, -EFAULT); __put_user_ret(0, &fba->owner, -EFAULT); __copy_to_user_ret(&fba->fbtype, &fb->type, sizeof(struct fbtype), -EFAULT); __put_user_ret(0, &fba->sattr.flags, -EFAULT); __put_user_ret(fb->type.fb_type, &fba->sattr.emu_type, -EFAULT); __put_user_ret(-1, &fba->sattr.dev_specific[0], -EFAULT); __put_user_ret(fb->type.fb_type, &fba->emu_types[0], -EFAULT); for (i = 1; i < 4; i++) put_user_ret(fb->emulations[i], &fba->emu_types[i], -EFAULT); break; } case FBIOSATTR: i = verify_area (VERIFY_READ, (void *) arg, sizeof (struct fbsattr)); if (i) return i; return -EINVAL; case FBIOSVIDEO: if (fb == fbinfo && vt_cons[fg_console]->vc_mode == KD_TEXT) break; get_user_ret(i, (int *)arg, -EFAULT); if (i){ if (!fb->blanked || !fb->unblank) break; if (!minor || (fb->open && fb->mmaped)) (*fb->unblank)(fb); fb->blanked = 0; } else { if (fb->blanked || !fb->blank) break; (*fb->blank)(fb); fb->blanked = 1; } break; case FBIOGVIDEO: put_user_ret(fb->blanked, (int *) arg, -EFAULT); break; case FBIOGETCMAP: { char *rp, *gp, *bp; int end, count, index; if (!fb->loadcmap) return -EINVAL; i = verify_area (VERIFY_READ, (void *) arg, sizeof (struct fbcmap)); if (i) return i; cmap = (struct fbcmap *) arg; __get_user_ret(count, &cmap->count, -EFAULT); __get_user_ret(index, &cmap->index, -EFAULT); if ((index < 0) || (index > 255)) return -EINVAL; if (index + count > 256) count = 256 - index; __get_user_ret(rp, &cmap->red, -EFAULT); __get_user_ret(gp, &cmap->green, -EFAULT); __get_user_ret(bp, &cmap->blue, -EFAULT); if(verify_area (VERIFY_WRITE, rp, count)) return -EFAULT; if(verify_area (VERIFY_WRITE, gp, count)) return -EFAULT; if(verify_area (VERIFY_WRITE, bp, count)) return -EFAULT; end = index + count; for (i = index; i < end; i++){ __put_user_ret(fb->color_map CM(i,0), rp, -EFAULT); __put_user_ret(fb->color_map CM(i,1), gp, -EFAULT); __put_user_ret(fb->color_map CM(i,2), bp, -EFAULT); rp++; gp++; bp++; } (*fb->loadcmap)(fb, index, count); break; } case FBIOPUTCMAP: { /* load color map entries */ char *rp, *gp, *bp; int end, count, index; if (!fb->loadcmap) return -EINVAL; i = verify_area (VERIFY_READ, (void *) arg, sizeof (struct fbcmap)); if (i) return i; cmap = (struct fbcmap *) arg; __get_user_ret(count, &cmap->count, -EFAULT); __get_user_ret(index, &cmap->index, -EFAULT); if ((index < 0) || (index > 255)) return -EINVAL; if (index + count > 256) count = 256 - index; __get_user_ret(rp, &cmap->red, -EFAULT); __get_user_ret(gp, &cmap->green, -EFAULT); __get_user_ret(bp, &cmap->blue, -EFAULT); if(verify_area (VERIFY_READ, rp, count)) return -EFAULT; if(verify_area (VERIFY_READ, gp, count)) return -EFAULT; if(verify_area (VERIFY_READ, bp, count)) return -EFAULT; end = index + count; for (i = index; i < end; i++){ __get_user_ret(fb->color_map CM(i,0), rp, -EFAULT); __get_user_ret(fb->color_map CM(i,1), gp, -EFAULT); __get_user_ret(fb->color_map CM(i,2), bp, -EFAULT); rp++; gp++; bp++; } (*fb->loadcmap)(fb, index, count); break; } case FBIOGCURMAX: { struct fbcurpos *p = (struct fbcurpos *) arg; if (!fb->setcursor) return -EINVAL; if(verify_area (VERIFY_WRITE, p, sizeof (struct fbcurpos))) return -EFAULT; __put_user_ret(fb->cursor.hwsize.fbx, &p->fbx, -EFAULT); __put_user_ret(fb->cursor.hwsize.fby, &p->fby, -EFAULT); break; } case FBIOSCURSOR: if (!fb->setcursor) return -EINVAL; if (fb == fbinfo) { if (vt_cons[fg_console]->vc_mode == KD_TEXT) return -EINVAL; /* Don't let graphics programs hide our nice text cursor */ sun_hw_cursor_shown = 0; /* Forget state of our text cursor */ } return sun_hw_scursor ((struct fbcursor *) arg, fb); case FBIOSCURPOS: if (!fb->setcursor) return -EINVAL; /* Don't let graphics programs move our nice text cursor */ if (fb == fbinfo) { if (vt_cons[fg_console]->vc_mode == KD_TEXT) return -EINVAL; /* Don't let graphics programs move our nice text cursor */ } i= verify_area (VERIFY_READ, (void *) arg, sizeof (struct fbcurpos)); if (i) return i; fb->cursor.cpos = *(struct fbcurpos *)arg; (*fb->setcursor) (fb); break; default: if (fb->ioctl){ i = fb->ioctl (inode, file, cmd, arg, fb); if (i == -ENOSYS) { printk ("[[FBIO: %8.8x]]\n", cmd); return -EINVAL; } return i; } printk ("[[FBIO: %8.8x]]\n", cmd); return -EINVAL; } return 0; } static int fb_close (struct inode * inode, struct file *filp) { fbinfo_t *fb; struct fbcursor cursor; FB_SETUP(EBADF) fb = &fbinfo[minor]; if (!minor) vt_cons [fb->vtconsole]->vc_mode = KD_TEXT; /* Leaving graphics mode, turn off the cursor */ if (fb->mmaped) sun_clear_fb (minor); cursor.set = FB_CUR_SETCUR; cursor.enable = 0; /* Reset the driver */ if (fb->reset) fb->reset(fb); if (fb->open) fb->open = 0; fb_ioctl (inode, filp, FBIOSCURPOS, (unsigned long) &cursor); set_other_palette (minor); if (!minor) { render_screen (); set_cursor (fg_console); } else if (fb->blank) (*fb->blank)(fb); return 0; } static int fb_mmap (struct inode *inode, struct file *file, struct vm_area_struct *vma) { fbinfo_t *fb; FB_SETUP(ENXIO) fb = &fbinfo [minor]; if (fb->mmap){ int v; v = (*fb->mmap)(inode, file, vma, fb->base, fb); if (v) return v; vma->vm_flags |= VM_IO; if (!fb->mmaped) { fb->mmaped = 1; if (!minor) { fb->vtconsole = fg_console; vt_cons [fg_console]->vc_mode = KD_GRAPHICS; } else { if (fb->unblank && !fb->blanked) (*fb->unblank)(fb); } } return 0; } else return -ENXIO; } static struct file_operations graphdev_fops = { NULL, /* lseek */ NULL, /* read */ NULL, /* write */ NULL, /* readdir */ NULL, /* poll */ fb_ioctl, fb_mmap, fb_open, /* open */ fb_close, /* close */ }; __initfunc(int fb_init (void)) { /* Register the frame buffer device */ if (register_chrdev (GRAPHDEV_MAJOR, "graphics", &graphdev_fops)){ printk ("Could not register graphics device\n"); return -EIO; } return 0; /* success */ } |