1 /* 2 * 3 * Hardware accelerated Matrox Millennium I, II, Mystique, G100, G200, G400 and G450. 4 * 5 * (c) 1998-2002 Petr Vandrovec <vandrove@vc.cvut.cz> 6 * 7 * Portions Copyright (c) 2001 Matrox Graphics Inc. 8 * 9 * Version: 1.65 2002/08/14 10 * 11 */ 12 13 #include "matroxfb_maven.h" 14 #include "matroxfb_crtc2.h" 15 #include "matroxfb_misc.h" 16 #include "matroxfb_DAC1064.h" 17 #include <linux/matroxfb.h> 18 #include <linux/slab.h> 19 #include <linux/uaccess.h> 20 21 /* **************************************************** */ 22 23 static int mem = 8192; 24 25 module_param(mem, int, 0); 26 MODULE_PARM_DESC(mem, "Memory size reserved for dualhead (default=8MB)"); 27 28 /* **************************************************** */ 29 30 static int matroxfb_dh_setcolreg(unsigned regno, unsigned red, unsigned green, 31 unsigned blue, unsigned transp, struct fb_info* info) { 32 u_int32_t col; 33 #define m2info (container_of(info, struct matroxfb_dh_fb_info, fbcon)) 34 35 if (regno >= 16) 36 return 1; 37 if (m2info->fbcon.var.grayscale) { 38 /* gray = 0.30*R + 0.59*G + 0.11*B */ 39 red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8; 40 } 41 red = CNVT_TOHW(red, m2info->fbcon.var.red.length); 42 green = CNVT_TOHW(green, m2info->fbcon.var.green.length); 43 blue = CNVT_TOHW(blue, m2info->fbcon.var.blue.length); 44 transp = CNVT_TOHW(transp, m2info->fbcon.var.transp.length); 45 46 col = (red << m2info->fbcon.var.red.offset) | 47 (green << m2info->fbcon.var.green.offset) | 48 (blue << m2info->fbcon.var.blue.offset) | 49 (transp << m2info->fbcon.var.transp.offset); 50 51 switch (m2info->fbcon.var.bits_per_pixel) { 52 case 16: 53 m2info->cmap[regno] = col | (col << 16); 54 break; 55 case 32: 56 m2info->cmap[regno] = col; 57 break; 58 } 59 return 0; 60 #undef m2info 61 } 62 63 static void matroxfb_dh_restore(struct matroxfb_dh_fb_info* m2info, 64 struct my_timming* mt, 65 int mode, 66 unsigned int pos) { 67 u_int32_t tmp; 68 u_int32_t datactl; 69 struct matrox_fb_info *minfo = m2info->primary_dev; 70 71 switch (mode) { 72 case 15: 73 tmp = 0x00200000; 74 break; 75 case 16: 76 tmp = 0x00400000; 77 break; 78 /* case 32: */ 79 default: 80 tmp = 0x00800000; 81 break; 82 } 83 tmp |= 0x00000001; /* enable CRTC2 */ 84 datactl = 0; 85 if (minfo->outputs[1].src == MATROXFB_SRC_CRTC2) { 86 if (minfo->devflags.g450dac) { 87 tmp |= 0x00000006; /* source from secondary pixel PLL */ 88 /* no vidrst when in monitor mode */ 89 if (minfo->outputs[1].mode != MATROXFB_OUTPUT_MODE_MONITOR) { 90 tmp |= 0xC0001000; /* Enable H/V vidrst */ 91 } 92 } else { 93 tmp |= 0x00000002; /* source from VDOCLK */ 94 tmp |= 0xC0000000; /* enable vvidrst & hvidrst */ 95 /* MGA TVO is our clock source */ 96 } 97 } else if (minfo->outputs[0].src == MATROXFB_SRC_CRTC2) { 98 tmp |= 0x00000004; /* source from pixclock */ 99 /* PIXPLL is our clock source */ 100 } 101 if (minfo->outputs[0].src == MATROXFB_SRC_CRTC2) { 102 tmp |= 0x00100000; /* connect CRTC2 to DAC */ 103 } 104 if (mt->interlaced) { 105 tmp |= 0x02000000; /* interlaced, second field is bigger, as G450 apparently ignores it */ 106 mt->VDisplay >>= 1; 107 mt->VSyncStart >>= 1; 108 mt->VSyncEnd >>= 1; 109 mt->VTotal >>= 1; 110 } 111 if ((mt->HTotal & 7) == 2) { 112 datactl |= 0x00000010; 113 mt->HTotal &= ~7; 114 } 115 tmp |= 0x10000000; /* 0x10000000 is VIDRST polarity */ 116 mga_outl(0x3C14, ((mt->HDisplay - 8) << 16) | (mt->HTotal - 8)); 117 mga_outl(0x3C18, ((mt->HSyncEnd - 8) << 16) | (mt->HSyncStart - 8)); 118 mga_outl(0x3C1C, ((mt->VDisplay - 1) << 16) | (mt->VTotal - 1)); 119 mga_outl(0x3C20, ((mt->VSyncEnd - 1) << 16) | (mt->VSyncStart - 1)); 120 mga_outl(0x3C24, ((mt->VSyncStart) << 16) | (mt->HSyncStart)); /* preload */ 121 { 122 u_int32_t linelen = m2info->fbcon.var.xres_virtual * (m2info->fbcon.var.bits_per_pixel >> 3); 123 if (tmp & 0x02000000) { 124 /* field #0 is smaller, so... */ 125 mga_outl(0x3C2C, pos); /* field #1 vmemory start */ 126 mga_outl(0x3C28, pos + linelen); /* field #0 vmemory start */ 127 linelen <<= 1; 128 m2info->interlaced = 1; 129 } else { 130 mga_outl(0x3C28, pos); /* vmemory start */ 131 m2info->interlaced = 0; 132 } 133 mga_outl(0x3C40, linelen); 134 } 135 mga_outl(0x3C4C, datactl); /* data control */ 136 if (tmp & 0x02000000) { 137 int i; 138 139 mga_outl(0x3C10, tmp & ~0x02000000); 140 for (i = 0; i < 2; i++) { 141 unsigned int nl; 142 unsigned int lastl = 0; 143 144 while ((nl = mga_inl(0x3C48) & 0xFFF) >= lastl) { 145 lastl = nl; 146 } 147 } 148 } 149 mga_outl(0x3C10, tmp); 150 minfo->hw.crtc2.ctl = tmp; 151 152 tmp = mt->VDisplay << 16; /* line compare */ 153 if (mt->sync & FB_SYNC_HOR_HIGH_ACT) 154 tmp |= 0x00000100; 155 if (mt->sync & FB_SYNC_VERT_HIGH_ACT) 156 tmp |= 0x00000200; 157 mga_outl(0x3C44, tmp); 158 } 159 160 static void matroxfb_dh_disable(struct matroxfb_dh_fb_info* m2info) { 161 struct matrox_fb_info *minfo = m2info->primary_dev; 162 163 mga_outl(0x3C10, 0x00000004); /* disable CRTC2, CRTC1->DAC1, PLL as clock source */ 164 minfo->hw.crtc2.ctl = 0x00000004; 165 } 166 167 static void matroxfb_dh_pan_var(struct matroxfb_dh_fb_info* m2info, 168 struct fb_var_screeninfo* var) { 169 unsigned int pos; 170 unsigned int linelen; 171 unsigned int pixelsize; 172 struct matrox_fb_info *minfo = m2info->primary_dev; 173 174 m2info->fbcon.var.xoffset = var->xoffset; 175 m2info->fbcon.var.yoffset = var->yoffset; 176 pixelsize = m2info->fbcon.var.bits_per_pixel >> 3; 177 linelen = m2info->fbcon.var.xres_virtual * pixelsize; 178 pos = m2info->fbcon.var.yoffset * linelen + m2info->fbcon.var.xoffset * pixelsize; 179 pos += m2info->video.offbase; 180 if (m2info->interlaced) { 181 mga_outl(0x3C2C, pos); 182 mga_outl(0x3C28, pos + linelen); 183 } else { 184 mga_outl(0x3C28, pos); 185 } 186 } 187 188 static int matroxfb_dh_decode_var(struct matroxfb_dh_fb_info* m2info, 189 struct fb_var_screeninfo* var, 190 int *visual, 191 int *video_cmap_len, 192 int *mode) { 193 unsigned int mask; 194 unsigned int memlen; 195 unsigned int vramlen; 196 197 switch (var->bits_per_pixel) { 198 case 16: mask = 0x1F; 199 break; 200 case 32: mask = 0x0F; 201 break; 202 default: return -EINVAL; 203 } 204 vramlen = m2info->video.len_usable; 205 if (var->yres_virtual < var->yres) 206 var->yres_virtual = var->yres; 207 if (var->xres_virtual < var->xres) 208 var->xres_virtual = var->xres; 209 var->xres_virtual = (var->xres_virtual + mask) & ~mask; 210 if (var->yres_virtual > 32767) 211 return -EINVAL; 212 memlen = var->xres_virtual * var->yres_virtual * (var->bits_per_pixel >> 3); 213 if (memlen > vramlen) 214 return -EINVAL; 215 if (var->xoffset + var->xres > var->xres_virtual) 216 var->xoffset = var->xres_virtual - var->xres; 217 if (var->yoffset + var->yres > var->yres_virtual) 218 var->yoffset = var->yres_virtual - var->yres; 219 220 var->xres &= ~7; 221 var->left_margin &= ~7; 222 var->right_margin &= ~7; 223 var->hsync_len &= ~7; 224 225 *mode = var->bits_per_pixel; 226 if (var->bits_per_pixel == 16) { 227 if (var->green.length == 5) { 228 var->red.offset = 10; 229 var->red.length = 5; 230 var->green.offset = 5; 231 var->green.length = 5; 232 var->blue.offset = 0; 233 var->blue.length = 5; 234 var->transp.offset = 15; 235 var->transp.length = 1; 236 *mode = 15; 237 } else { 238 var->red.offset = 11; 239 var->red.length = 5; 240 var->green.offset = 5; 241 var->green.length = 6; 242 var->blue.offset = 0; 243 var->blue.length = 5; 244 var->transp.offset = 0; 245 var->transp.length = 0; 246 } 247 } else { 248 var->red.offset = 16; 249 var->red.length = 8; 250 var->green.offset = 8; 251 var->green.length = 8; 252 var->blue.offset = 0; 253 var->blue.length = 8; 254 var->transp.offset = 24; 255 var->transp.length = 8; 256 } 257 *visual = FB_VISUAL_TRUECOLOR; 258 *video_cmap_len = 16; 259 return 0; 260 } 261 262 static int matroxfb_dh_open(struct fb_info* info, int user) { 263 #define m2info (container_of(info, struct matroxfb_dh_fb_info, fbcon)) 264 struct matrox_fb_info *minfo = m2info->primary_dev; 265 266 if (minfo) { 267 int err; 268 269 if (minfo->dead) { 270 return -ENXIO; 271 } 272 err = minfo->fbops.fb_open(&minfo->fbcon, user); 273 if (err) { 274 return err; 275 } 276 } 277 return 0; 278 #undef m2info 279 } 280 281 static int matroxfb_dh_release(struct fb_info* info, int user) { 282 #define m2info (container_of(info, struct matroxfb_dh_fb_info, fbcon)) 283 int err = 0; 284 struct matrox_fb_info *minfo = m2info->primary_dev; 285 286 if (minfo) { 287 err = minfo->fbops.fb_release(&minfo->fbcon, user); 288 } 289 return err; 290 #undef m2info 291 } 292 293 /* 294 * This function is called before the register_framebuffer so 295 * no locking is needed. 296 */ 297 static void matroxfb_dh_init_fix(struct matroxfb_dh_fb_info *m2info) 298 { 299 struct fb_fix_screeninfo *fix = &m2info->fbcon.fix; 300 301 strcpy(fix->id, "MATROX DH"); 302 303 fix->smem_start = m2info->video.base; 304 fix->smem_len = m2info->video.len_usable; 305 fix->ypanstep = 1; 306 fix->ywrapstep = 0; 307 fix->xpanstep = 8; /* TBD */ 308 fix->mmio_start = m2info->mmio.base; 309 fix->mmio_len = m2info->mmio.len; 310 fix->accel = 0; /* no accel... */ 311 } 312 313 static int matroxfb_dh_check_var(struct fb_var_screeninfo* var, struct fb_info* info) { 314 #define m2info (container_of(info, struct matroxfb_dh_fb_info, fbcon)) 315 int visual; 316 int cmap_len; 317 int mode; 318 319 return matroxfb_dh_decode_var(m2info, var, &visual, &cmap_len, &mode); 320 #undef m2info 321 } 322 323 static int matroxfb_dh_set_par(struct fb_info* info) { 324 #define m2info (container_of(info, struct matroxfb_dh_fb_info, fbcon)) 325 int visual; 326 int cmap_len; 327 int mode; 328 int err; 329 struct fb_var_screeninfo* var = &info->var; 330 struct matrox_fb_info *minfo = m2info->primary_dev; 331 332 if ((err = matroxfb_dh_decode_var(m2info, var, &visual, &cmap_len, &mode)) != 0) 333 return err; 334 /* cmap */ 335 { 336 m2info->fbcon.screen_base = vaddr_va(m2info->video.vbase); 337 m2info->fbcon.fix.visual = visual; 338 m2info->fbcon.fix.type = FB_TYPE_PACKED_PIXELS; 339 m2info->fbcon.fix.type_aux = 0; 340 m2info->fbcon.fix.line_length = (var->xres_virtual * var->bits_per_pixel) >> 3; 341 } 342 { 343 struct my_timming mt; 344 unsigned int pos; 345 int out; 346 int cnt; 347 348 matroxfb_var2my(&m2info->fbcon.var, &mt); 349 mt.crtc = MATROXFB_SRC_CRTC2; 350 /* CRTC2 delay */ 351 mt.delay = 34; 352 353 pos = (m2info->fbcon.var.yoffset * m2info->fbcon.var.xres_virtual + m2info->fbcon.var.xoffset) * m2info->fbcon.var.bits_per_pixel >> 3; 354 pos += m2info->video.offbase; 355 cnt = 0; 356 down_read(&minfo->altout.lock); 357 for (out = 0; out < MATROXFB_MAX_OUTPUTS; out++) { 358 if (minfo->outputs[out].src == MATROXFB_SRC_CRTC2) { 359 cnt++; 360 if (minfo->outputs[out].output->compute) { 361 minfo->outputs[out].output->compute(minfo->outputs[out].data, &mt); 362 } 363 } 364 } 365 minfo->crtc2.pixclock = mt.pixclock; 366 minfo->crtc2.mnp = mt.mnp; 367 up_read(&minfo->altout.lock); 368 if (cnt) { 369 matroxfb_dh_restore(m2info, &mt, mode, pos); 370 } else { 371 matroxfb_dh_disable(m2info); 372 } 373 DAC1064_global_init(minfo); 374 DAC1064_global_restore(minfo); 375 down_read(&minfo->altout.lock); 376 for (out = 0; out < MATROXFB_MAX_OUTPUTS; out++) { 377 if (minfo->outputs[out].src == MATROXFB_SRC_CRTC2 && 378 minfo->outputs[out].output->program) { 379 minfo->outputs[out].output->program(minfo->outputs[out].data); 380 } 381 } 382 for (out = 0; out < MATROXFB_MAX_OUTPUTS; out++) { 383 if (minfo->outputs[out].src == MATROXFB_SRC_CRTC2 && 384 minfo->outputs[out].output->start) { 385 minfo->outputs[out].output->start(minfo->outputs[out].data); 386 } 387 } 388 up_read(&minfo->altout.lock); 389 } 390 m2info->initialized = 1; 391 return 0; 392 #undef m2info 393 } 394 395 static int matroxfb_dh_pan_display(struct fb_var_screeninfo* var, struct fb_info* info) { 396 #define m2info (container_of(info, struct matroxfb_dh_fb_info, fbcon)) 397 matroxfb_dh_pan_var(m2info, var); 398 return 0; 399 #undef m2info 400 } 401 402 static int matroxfb_dh_get_vblank(const struct matroxfb_dh_fb_info* m2info, struct fb_vblank* vblank) { 403 struct matrox_fb_info *minfo = m2info->primary_dev; 404 405 matroxfb_enable_irq(minfo, 0); 406 memset(vblank, 0, sizeof(*vblank)); 407 vblank->flags = FB_VBLANK_HAVE_VCOUNT | FB_VBLANK_HAVE_VBLANK; 408 /* mask out reserved bits + field number (odd/even) */ 409 vblank->vcount = mga_inl(0x3C48) & 0x000007FF; 410 /* compatibility stuff */ 411 if (vblank->vcount >= m2info->fbcon.var.yres) 412 vblank->flags |= FB_VBLANK_VBLANKING; 413 if (test_bit(0, &minfo->irq_flags)) { 414 vblank->flags |= FB_VBLANK_HAVE_COUNT; 415 /* Only one writer, aligned int value... 416 it should work without lock and without atomic_t */ 417 vblank->count = minfo->crtc2.vsync.cnt; 418 } 419 return 0; 420 } 421 422 static int matroxfb_dh_ioctl(struct fb_info *info, 423 unsigned int cmd, 424 unsigned long arg) 425 { 426 #define m2info (container_of(info, struct matroxfb_dh_fb_info, fbcon)) 427 struct matrox_fb_info *minfo = m2info->primary_dev; 428 429 DBG(__func__) 430 431 switch (cmd) { 432 case FBIOGET_VBLANK: 433 { 434 struct fb_vblank vblank; 435 int err; 436 437 err = matroxfb_dh_get_vblank(m2info, &vblank); 438 if (err) 439 return err; 440 if (copy_to_user((void __user *)arg, &vblank, sizeof(vblank))) 441 return -EFAULT; 442 return 0; 443 } 444 case FBIO_WAITFORVSYNC: 445 { 446 u_int32_t crt; 447 448 if (get_user(crt, (u_int32_t __user *)arg)) 449 return -EFAULT; 450 451 if (crt != 0) 452 return -ENODEV; 453 return matroxfb_wait_for_sync(minfo, 1); 454 } 455 case MATROXFB_SET_OUTPUT_MODE: 456 case MATROXFB_GET_OUTPUT_MODE: 457 case MATROXFB_GET_ALL_OUTPUTS: 458 { 459 return minfo->fbcon.fbops->fb_ioctl(&minfo->fbcon, cmd, arg); 460 } 461 case MATROXFB_SET_OUTPUT_CONNECTION: 462 { 463 u_int32_t tmp; 464 int out; 465 int changes; 466 467 if (get_user(tmp, (u_int32_t __user *)arg)) 468 return -EFAULT; 469 for (out = 0; out < 32; out++) { 470 if (tmp & (1 << out)) { 471 if (out >= MATROXFB_MAX_OUTPUTS) 472 return -ENXIO; 473 if (!minfo->outputs[out].output) 474 return -ENXIO; 475 switch (minfo->outputs[out].src) { 476 case MATROXFB_SRC_NONE: 477 case MATROXFB_SRC_CRTC2: 478 break; 479 default: 480 return -EBUSY; 481 } 482 } 483 } 484 if (minfo->devflags.panellink) { 485 if (tmp & MATROXFB_OUTPUT_CONN_DFP) 486 return -EINVAL; 487 if ((minfo->outputs[2].src == MATROXFB_SRC_CRTC1) && tmp) 488 return -EBUSY; 489 } 490 changes = 0; 491 for (out = 0; out < MATROXFB_MAX_OUTPUTS; out++) { 492 if (tmp & (1 << out)) { 493 if (minfo->outputs[out].src != MATROXFB_SRC_CRTC2) { 494 changes = 1; 495 minfo->outputs[out].src = MATROXFB_SRC_CRTC2; 496 } 497 } else if (minfo->outputs[out].src == MATROXFB_SRC_CRTC2) { 498 changes = 1; 499 minfo->outputs[out].src = MATROXFB_SRC_NONE; 500 } 501 } 502 if (!changes) 503 return 0; 504 matroxfb_dh_set_par(info); 505 return 0; 506 } 507 case MATROXFB_GET_OUTPUT_CONNECTION: 508 { 509 u_int32_t conn = 0; 510 int out; 511 512 for (out = 0; out < MATROXFB_MAX_OUTPUTS; out++) { 513 if (minfo->outputs[out].src == MATROXFB_SRC_CRTC2) { 514 conn |= 1 << out; 515 } 516 } 517 if (put_user(conn, (u_int32_t __user *)arg)) 518 return -EFAULT; 519 return 0; 520 } 521 case MATROXFB_GET_AVAILABLE_OUTPUTS: 522 { 523 u_int32_t tmp = 0; 524 int out; 525 526 for (out = 0; out < MATROXFB_MAX_OUTPUTS; out++) { 527 if (minfo->outputs[out].output) { 528 switch (minfo->outputs[out].src) { 529 case MATROXFB_SRC_NONE: 530 case MATROXFB_SRC_CRTC2: 531 tmp |= 1 << out; 532 break; 533 } 534 } 535 } 536 if (minfo->devflags.panellink) { 537 tmp &= ~MATROXFB_OUTPUT_CONN_DFP; 538 if (minfo->outputs[2].src == MATROXFB_SRC_CRTC1) { 539 tmp = 0; 540 } 541 } 542 if (put_user(tmp, (u_int32_t __user *)arg)) 543 return -EFAULT; 544 return 0; 545 } 546 } 547 return -ENOTTY; 548 #undef m2info 549 } 550 551 static int matroxfb_dh_blank(int blank, struct fb_info* info) { 552 #define m2info (container_of(info, struct matroxfb_dh_fb_info, fbcon)) 553 switch (blank) { 554 case 1: 555 case 2: 556 case 3: 557 case 4: 558 default:; 559 } 560 /* do something... */ 561 return 0; 562 #undef m2info 563 } 564 565 static struct fb_ops matroxfb_dh_ops = { 566 .owner = THIS_MODULE, 567 .fb_open = matroxfb_dh_open, 568 .fb_release = matroxfb_dh_release, 569 .fb_check_var = matroxfb_dh_check_var, 570 .fb_set_par = matroxfb_dh_set_par, 571 .fb_setcolreg = matroxfb_dh_setcolreg, 572 .fb_pan_display =matroxfb_dh_pan_display, 573 .fb_blank = matroxfb_dh_blank, 574 .fb_ioctl = matroxfb_dh_ioctl, 575 .fb_fillrect = cfb_fillrect, 576 .fb_copyarea = cfb_copyarea, 577 .fb_imageblit = cfb_imageblit, 578 }; 579 580 static struct fb_var_screeninfo matroxfb_dh_defined = { 581 640,480,640,480,/* W,H, virtual W,H */ 582 0,0, /* offset */ 583 32, /* depth */ 584 0, /* gray */ 585 {0,0,0}, /* R */ 586 {0,0,0}, /* G */ 587 {0,0,0}, /* B */ 588 {0,0,0}, /* alpha */ 589 0, /* nonstd */ 590 FB_ACTIVATE_NOW, 591 -1,-1, /* display size */ 592 0, /* accel flags */ 593 39721L,48L,16L,33L,10L, 594 96L,2,0, /* no sync info */ 595 FB_VMODE_NONINTERLACED, 596 }; 597 598 static int matroxfb_dh_regit(const struct matrox_fb_info *minfo, 599 struct matroxfb_dh_fb_info *m2info) 600 { 601 #define minfo (m2info->primary_dev) 602 void* oldcrtc2; 603 604 m2info->fbcon.fbops = &matroxfb_dh_ops; 605 m2info->fbcon.flags = FBINFO_FLAG_DEFAULT; 606 m2info->fbcon.flags |= FBINFO_HWACCEL_XPAN | 607 FBINFO_HWACCEL_YPAN; 608 m2info->fbcon.pseudo_palette = m2info->cmap; 609 fb_alloc_cmap(&m2info->fbcon.cmap, 256, 1); 610 611 if (mem < 64) 612 mem *= 1024; 613 if (mem < 64*1024) 614 mem *= 1024; 615 mem &= ~0x00000FFF; /* PAGE_MASK? */ 616 if (minfo->video.len_usable + mem <= minfo->video.len) 617 m2info->video.offbase = minfo->video.len - mem; 618 else if (minfo->video.len < mem) { 619 return -ENOMEM; 620 } else { /* check yres on first head... */ 621 m2info->video.borrowed = mem; 622 minfo->video.len_usable -= mem; 623 m2info->video.offbase = minfo->video.len_usable; 624 } 625 m2info->video.base = minfo->video.base + m2info->video.offbase; 626 m2info->video.len = m2info->video.len_usable = m2info->video.len_maximum = mem; 627 m2info->video.vbase.vaddr = vaddr_va(minfo->video.vbase) + m2info->video.offbase; 628 m2info->mmio.base = minfo->mmio.base; 629 m2info->mmio.vbase = minfo->mmio.vbase; 630 m2info->mmio.len = minfo->mmio.len; 631 632 matroxfb_dh_init_fix(m2info); 633 if (register_framebuffer(&m2info->fbcon)) { 634 return -ENXIO; 635 } 636 if (!m2info->initialized) 637 fb_set_var(&m2info->fbcon, &matroxfb_dh_defined); 638 down_write(&minfo->crtc2.lock); 639 oldcrtc2 = minfo->crtc2.info; 640 minfo->crtc2.info = m2info; 641 up_write(&minfo->crtc2.lock); 642 if (oldcrtc2) { 643 printk(KERN_ERR "matroxfb_crtc2: Internal consistency check failed: crtc2 already present: %p\n", 644 oldcrtc2); 645 } 646 return 0; 647 #undef minfo 648 } 649 650 /* ************************** */ 651 652 static int matroxfb_dh_registerfb(struct matroxfb_dh_fb_info* m2info) { 653 #define minfo (m2info->primary_dev) 654 if (matroxfb_dh_regit(minfo, m2info)) { 655 printk(KERN_ERR "matroxfb_crtc2: secondary head failed to register\n"); 656 return -1; 657 } 658 printk(KERN_INFO "matroxfb_crtc2: secondary head of fb%u was registered as fb%u\n", 659 minfo->fbcon.node, m2info->fbcon.node); 660 m2info->fbcon_registered = 1; 661 return 0; 662 #undef minfo 663 } 664 665 static void matroxfb_dh_deregisterfb(struct matroxfb_dh_fb_info* m2info) { 666 #define minfo (m2info->primary_dev) 667 if (m2info->fbcon_registered) { 668 int id; 669 struct matroxfb_dh_fb_info* crtc2; 670 671 down_write(&minfo->crtc2.lock); 672 crtc2 = minfo->crtc2.info; 673 if (crtc2 == m2info) 674 minfo->crtc2.info = NULL; 675 up_write(&minfo->crtc2.lock); 676 if (crtc2 != m2info) { 677 printk(KERN_ERR "matroxfb_crtc2: Internal consistency check failed: crtc2 mismatch at unload: %p != %p\n", 678 crtc2, m2info); 679 printk(KERN_ERR "matroxfb_crtc2: Expect kernel crash after module unload.\n"); 680 return; 681 } 682 id = m2info->fbcon.node; 683 unregister_framebuffer(&m2info->fbcon); 684 /* return memory back to primary head */ 685 minfo->video.len_usable += m2info->video.borrowed; 686 printk(KERN_INFO "matroxfb_crtc2: fb%u unregistered\n", id); 687 m2info->fbcon_registered = 0; 688 } 689 #undef minfo 690 } 691 692 static void* matroxfb_crtc2_probe(struct matrox_fb_info* minfo) { 693 struct matroxfb_dh_fb_info* m2info; 694 695 /* hardware is CRTC2 incapable... */ 696 if (!minfo->devflags.crtc2) 697 return NULL; 698 m2info = kzalloc(sizeof(*m2info), GFP_KERNEL); 699 if (!m2info) 700 return NULL; 701 702 m2info->primary_dev = minfo; 703 if (matroxfb_dh_registerfb(m2info)) { 704 kfree(m2info); 705 printk(KERN_ERR "matroxfb_crtc2: CRTC2 framebuffer failed to register\n"); 706 return NULL; 707 } 708 return m2info; 709 } 710 711 static void matroxfb_crtc2_remove(struct matrox_fb_info* minfo, void* crtc2) { 712 matroxfb_dh_deregisterfb(crtc2); 713 kfree(crtc2); 714 } 715 716 static struct matroxfb_driver crtc2 = { 717 .name = "Matrox G400 CRTC2", 718 .probe = matroxfb_crtc2_probe, 719 .remove = matroxfb_crtc2_remove }; 720 721 static int matroxfb_crtc2_init(void) { 722 if (fb_get_options("matrox_crtc2fb", NULL)) 723 return -ENODEV; 724 725 matroxfb_register_driver(&crtc2); 726 return 0; 727 } 728 729 static void matroxfb_crtc2_exit(void) { 730 matroxfb_unregister_driver(&crtc2); 731 } 732 733 MODULE_AUTHOR("(c) 1999-2002 Petr Vandrovec <vandrove@vc.cvut.cz>"); 734 MODULE_DESCRIPTION("Matrox G400 CRTC2 driver"); 735 MODULE_LICENSE("GPL"); 736 module_init(matroxfb_crtc2_init); 737 module_exit(matroxfb_crtc2_exit); 738 /* we do not have __setup() yet */ 739