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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 | /* * valkyriefb.c -- frame buffer device for the PowerMac 'valkyrie' display * * Created 8 August 1998 by * Martin Costabel <costabel@wanadoo.fr> and Kevin Schoedel * * Vmode-switching changes and vmode 15/17 modifications created 29 August * 1998 by Barry K. Nathan <barryn@pobox.com>. * * Ported to m68k Macintosh by David Huggins-Daines <dhd@debian.org> * * Derived directly from: * * controlfb.c -- frame buffer device for the PowerMac 'control' display * Copyright (C) 1998 Dan Jacobowitz <dan@debian.org> * * pmc-valkyrie.c -- Console support for PowerMac "valkyrie" display adaptor. * Copyright (C) 1997 Paul Mackerras. * * and indirectly: * * Frame buffer structure from: * drivers/video/chipsfb.c -- frame buffer device for * Chips & Technologies 65550 chip. * * Copyright (C) 1998 Paul Mackerras * * This file is derived from the Powermac "chips" driver: * Copyright (C) 1997 Fabio Riccardi. * And from the frame buffer device for Open Firmware-initialized devices: * Copyright (C) 1997 Geert Uytterhoeven. * * Hardware information from: * control.c: Console support for PowerMac "control" display adaptor. * Copyright (C) 1996 Paul Mackerras * * This file is subject to the terms and conditions of the GNU General Public * License. See the file COPYING in the main directory of this archive for * more details. */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/errno.h> #include <linux/string.h> #include <linux/mm.h> #include <linux/slab.h> #include <linux/vmalloc.h> #include <linux/delay.h> #include <linux/interrupt.h> #include <linux/fb.h> #include <linux/selection.h> #include <linux/init.h> #include <linux/nvram.h> #include <linux/adb.h> #include <linux/cuda.h> #include <linux/of_address.h> #ifdef CONFIG_MAC #include <asm/macintosh.h> #endif #include "macmodes.h" #include "valkyriefb.h" static int default_vmode = VMODE_NVRAM; static int default_cmode = CMODE_NVRAM; struct fb_par_valkyrie { int vmode, cmode; int xres, yres; int vxres, vyres; struct valkyrie_regvals *init; }; struct fb_info_valkyrie { struct fb_info info; struct fb_par_valkyrie par; struct cmap_regs __iomem *cmap_regs; unsigned long cmap_regs_phys; struct valkyrie_regs __iomem *valkyrie_regs; unsigned long valkyrie_regs_phys; __u8 __iomem *frame_buffer; unsigned long frame_buffer_phys; int sense; unsigned long total_vram; u32 pseudo_palette[16]; }; static int valkyriefb_setup(char*); static int valkyriefb_check_var(struct fb_var_screeninfo *var, struct fb_info *info); static int valkyriefb_set_par(struct fb_info *info); static int valkyriefb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, u_int transp, struct fb_info *info); static int valkyriefb_blank(int blank_mode, struct fb_info *info); static int read_valkyrie_sense(struct fb_info_valkyrie *p); static void set_valkyrie_clock(unsigned char *params); static int valkyrie_var_to_par(struct fb_var_screeninfo *var, struct fb_par_valkyrie *par, const struct fb_info *fb_info); static int valkyrie_init_info(struct fb_info *info, struct fb_info_valkyrie *p); static void valkyrie_par_to_fix(struct fb_par_valkyrie *par, struct fb_fix_screeninfo *fix); static void valkyrie_init_fix(struct fb_fix_screeninfo *fix, struct fb_info_valkyrie *p); static const struct fb_ops valkyriefb_ops = { .owner = THIS_MODULE, .fb_check_var = valkyriefb_check_var, .fb_set_par = valkyriefb_set_par, .fb_setcolreg = valkyriefb_setcolreg, .fb_blank = valkyriefb_blank, .fb_fillrect = cfb_fillrect, .fb_copyarea = cfb_copyarea, .fb_imageblit = cfb_imageblit, }; /* Sets the video mode according to info->var */ static int valkyriefb_set_par(struct fb_info *info) { struct fb_info_valkyrie *p = container_of(info, struct fb_info_valkyrie, info); volatile struct valkyrie_regs __iomem *valkyrie_regs = p->valkyrie_regs; struct fb_par_valkyrie *par = info->par; struct valkyrie_regvals *init; int err; if ((err = valkyrie_var_to_par(&info->var, par, info))) return err; valkyrie_par_to_fix(par, &info->fix); /* Reset the valkyrie */ out_8(&valkyrie_regs->status.r, 0); udelay(100); /* Initialize display timing registers */ init = par->init; out_8(&valkyrie_regs->mode.r, init->mode | 0x80); out_8(&valkyrie_regs->depth.r, par->cmode + 3); set_valkyrie_clock(init->clock_params); udelay(100); /* Turn on display */ out_8(&valkyrie_regs->mode.r, init->mode); return 0; } static inline int valkyrie_par_to_var(struct fb_par_valkyrie *par, struct fb_var_screeninfo *var) { return mac_vmode_to_var(par->vmode, par->cmode, var); } static int valkyriefb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) { int err; struct fb_par_valkyrie par; if ((err = valkyrie_var_to_par(var, &par, info))) return err; valkyrie_par_to_var(&par, var); return 0; } /* * Blank the screen if blank_mode != 0, else unblank. If blank_mode == NULL * then the caller blanks by setting the CLUT (Color Look Up Table) to all * black. Return 0 if blanking succeeded, != 0 if un-/blanking failed due * to e.g. a video mode which doesn't support it. Implements VESA suspend * and powerdown modes on hardware that supports disabling hsync/vsync: * blank_mode == 2: suspend vsync * blank_mode == 3: suspend hsync * blank_mode == 4: powerdown */ static int valkyriefb_blank(int blank_mode, struct fb_info *info) { struct fb_info_valkyrie *p = container_of(info, struct fb_info_valkyrie, info); struct fb_par_valkyrie *par = info->par; struct valkyrie_regvals *init = par->init; if (init == NULL) return 1; switch (blank_mode) { case FB_BLANK_UNBLANK: /* unblank */ out_8(&p->valkyrie_regs->mode.r, init->mode); break; case FB_BLANK_NORMAL: return 1; /* get caller to set CLUT to all black */ case FB_BLANK_VSYNC_SUSPEND: case FB_BLANK_HSYNC_SUSPEND: /* * [kps] Value extracted from MacOS. I don't know * whether this bit disables hsync or vsync, or * whether the hardware can do the other as well. */ out_8(&p->valkyrie_regs->mode.r, init->mode | 0x40); break; case FB_BLANK_POWERDOWN: out_8(&p->valkyrie_regs->mode.r, 0x66); break; } return 0; } static int valkyriefb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, u_int transp, struct fb_info *info) { struct fb_info_valkyrie *p = container_of(info, struct fb_info_valkyrie, info); volatile struct cmap_regs __iomem *cmap_regs = p->cmap_regs; struct fb_par_valkyrie *par = info->par; if (regno > 255) return 1; red >>= 8; green >>= 8; blue >>= 8; /* tell clut which address to fill */ out_8(&p->cmap_regs->addr, regno); udelay(1); /* send one color channel at a time */ out_8(&cmap_regs->lut, red); out_8(&cmap_regs->lut, green); out_8(&cmap_regs->lut, blue); if (regno < 16 && par->cmode == CMODE_16) ((u32 *)info->pseudo_palette)[regno] = (regno << 10) | (regno << 5) | regno; return 0; } static inline int valkyrie_vram_reqd(int video_mode, int color_mode) { int pitch; struct valkyrie_regvals *init = valkyrie_reg_init[video_mode-1]; if ((pitch = init->pitch[color_mode]) == 0) pitch = 2 * init->pitch[0]; return init->vres * pitch; } static void set_valkyrie_clock(unsigned char *params) { #ifdef CONFIG_ADB_CUDA struct adb_request req; int i; for (i = 0; i < 3; ++i) { cuda_request(&req, NULL, 5, CUDA_PACKET, CUDA_GET_SET_IIC, 0x50, i + 1, params[i]); while (!req.complete) cuda_poll(); } #endif } static void __init valkyrie_choose_mode(struct fb_info_valkyrie *p) { p->sense = read_valkyrie_sense(p); printk(KERN_INFO "Monitor sense value = 0x%x\n", p->sense); /* Try to pick a video mode out of NVRAM if we have one. */ #ifdef CONFIG_PPC_PMAC if (IS_REACHABLE(CONFIG_NVRAM) && default_vmode == VMODE_NVRAM) default_vmode = nvram_read_byte(NV_VMODE); #endif if (default_vmode <= 0 || default_vmode > VMODE_MAX || !valkyrie_reg_init[default_vmode - 1]) { default_vmode = mac_map_monitor_sense(p->sense); if (!valkyrie_reg_init[default_vmode - 1]) default_vmode = VMODE_640_480_67; } #ifdef CONFIG_PPC_PMAC if (IS_REACHABLE(CONFIG_NVRAM) && default_cmode == CMODE_NVRAM) default_cmode = nvram_read_byte(NV_CMODE); #endif /* * Reduce the pixel size if we don't have enough VRAM or bandwidth. */ if (default_cmode < CMODE_8 || default_cmode > CMODE_16 || valkyrie_reg_init[default_vmode-1]->pitch[default_cmode] == 0 || valkyrie_vram_reqd(default_vmode, default_cmode) > p->total_vram) default_cmode = CMODE_8; printk(KERN_INFO "using video mode %d and color mode %d.\n", default_vmode, default_cmode); } static int __init valkyriefb_init(void) { struct fb_info_valkyrie *p; unsigned long frame_buffer_phys, cmap_regs_phys; int err; char *option = NULL; if (fb_get_options("valkyriefb", &option)) return -ENODEV; valkyriefb_setup(option); #ifdef CONFIG_MAC if (!MACH_IS_MAC) return -ENODEV; if (!(mac_bi_data.id == MAC_MODEL_Q630 /* I'm not sure about this one */ || mac_bi_data.id == MAC_MODEL_P588)) return -ENODEV; /* Hardcoded addresses... welcome to 68k Macintosh country :-) */ frame_buffer_phys = 0xf9000000; cmap_regs_phys = 0x50f24000; #else /* ppc (!CONFIG_MAC) */ { struct device_node *dp; struct resource r; dp = of_find_node_by_name(NULL, "valkyrie"); if (!dp) return 0; if (of_address_to_resource(dp, 0, &r)) { printk(KERN_ERR "can't find address for valkyrie\n"); return 0; } frame_buffer_phys = r.start; cmap_regs_phys = r.start + 0x304000; } #endif /* ppc (!CONFIG_MAC) */ p = kzalloc(sizeof(*p), GFP_ATOMIC); if (!p) return -ENOMEM; /* Map in frame buffer and registers */ if (!request_mem_region(frame_buffer_phys, 0x100000, "valkyriefb")) { kfree(p); return 0; } p->total_vram = 0x100000; p->frame_buffer_phys = frame_buffer_phys; #ifdef CONFIG_MAC p->frame_buffer = ioremap(frame_buffer_phys, p->total_vram); #else p->frame_buffer = ioremap_wt(frame_buffer_phys, p->total_vram); #endif p->cmap_regs_phys = cmap_regs_phys; p->cmap_regs = ioremap(p->cmap_regs_phys, 0x1000); p->valkyrie_regs_phys = cmap_regs_phys+0x6000; p->valkyrie_regs = ioremap(p->valkyrie_regs_phys, 0x1000); err = -ENOMEM; if (p->frame_buffer == NULL || p->cmap_regs == NULL || p->valkyrie_regs == NULL) { printk(KERN_ERR "valkyriefb: couldn't map resources\n"); goto out_free; } valkyrie_choose_mode(p); mac_vmode_to_var(default_vmode, default_cmode, &p->info.var); err = valkyrie_init_info(&p->info, p); if (err < 0) goto out_free; valkyrie_init_fix(&p->info.fix, p); if (valkyriefb_set_par(&p->info)) /* "can't happen" */ printk(KERN_ERR "valkyriefb: can't set default video mode\n"); if ((err = register_framebuffer(&p->info)) != 0) goto out_cmap_free; fb_info(&p->info, "valkyrie frame buffer device\n"); return 0; out_cmap_free: fb_dealloc_cmap(&p->info.cmap); out_free: if (p->frame_buffer) iounmap(p->frame_buffer); if (p->cmap_regs) iounmap(p->cmap_regs); if (p->valkyrie_regs) iounmap(p->valkyrie_regs); kfree(p); return err; } /* * Get the monitor sense value. */ static int read_valkyrie_sense(struct fb_info_valkyrie *p) { int sense, in; out_8(&p->valkyrie_regs->msense.r, 0); /* release all lines */ __delay(20000); sense = ((in = in_8(&p->valkyrie_regs->msense.r)) & 0x70) << 4; /* drive each sense line low in turn and collect the other 2 */ out_8(&p->valkyrie_regs->msense.r, 4); /* drive A low */ __delay(20000); sense |= ((in = in_8(&p->valkyrie_regs->msense.r)) & 0x30); out_8(&p->valkyrie_regs->msense.r, 2); /* drive B low */ __delay(20000); sense |= ((in = in_8(&p->valkyrie_regs->msense.r)) & 0x40) >> 3; sense |= (in & 0x10) >> 2; out_8(&p->valkyrie_regs->msense.r, 1); /* drive C low */ __delay(20000); sense |= ((in = in_8(&p->valkyrie_regs->msense.r)) & 0x60) >> 5; out_8(&p->valkyrie_regs->msense.r, 7); return sense; } /* * This routine takes a user-supplied var, * and picks the best vmode/cmode from it. */ /* [bkn] I did a major overhaul of this function. * * Much of the old code was "swiped by jonh from atyfb.c". Because * macmodes has mac_var_to_vmode, I felt that it would be better to * rework this function to use that, instead of reinventing the wheel to * add support for vmode 17. This was reinforced by the fact that * the previously swiped atyfb.c code is no longer there. * * So, I swiped and adapted platinum_var_to_par (from platinumfb.c), replacing * most, but not all, of the old code in the process. One side benefit of * swiping the platinumfb code is that we now have more comprehensible error * messages when a vmode/cmode switch fails. (Most of the error messages are * platinumfb.c, but I added two of my own, and I also changed some commas * into colons to make the messages more consistent with other Linux error * messages.) In addition, I think the new code *might* fix some vmode- * switching oddities, but I'm not sure. * * There may be some more opportunities for cleanup in here, but this is a * good start... */ static int valkyrie_var_to_par(struct fb_var_screeninfo *var, struct fb_par_valkyrie *par, const struct fb_info *fb_info) { int vmode, cmode; struct valkyrie_regvals *init; struct fb_info_valkyrie *p = container_of(fb_info, struct fb_info_valkyrie, info); if (mac_var_to_vmode(var, &vmode, &cmode) != 0) { printk(KERN_ERR "valkyriefb: can't do %dx%dx%d.\n", var->xres, var->yres, var->bits_per_pixel); return -EINVAL; } /* Check if we know about the wanted video mode */ if (vmode < 1 || vmode > VMODE_MAX || !valkyrie_reg_init[vmode-1]) { printk(KERN_ERR "valkyriefb: vmode %d not valid.\n", vmode); return -EINVAL; } if (cmode != CMODE_8 && cmode != CMODE_16) { printk(KERN_ERR "valkyriefb: cmode %d not valid.\n", cmode); return -EINVAL; } if (var->xres_virtual > var->xres || var->yres_virtual > var->yres || var->xoffset != 0 || var->yoffset != 0) { return -EINVAL; } init = valkyrie_reg_init[vmode-1]; if (init->pitch[cmode] == 0) { printk(KERN_ERR "valkyriefb: vmode %d does not support " "cmode %d.\n", vmode, cmode); return -EINVAL; } if (valkyrie_vram_reqd(vmode, cmode) > p->total_vram) { printk(KERN_ERR "valkyriefb: not enough ram for vmode %d, " "cmode %d.\n", vmode, cmode); return -EINVAL; } par->vmode = vmode; par->cmode = cmode; par->init = init; par->xres = var->xres; par->yres = var->yres; par->vxres = par->xres; par->vyres = par->yres; return 0; } static void valkyrie_init_fix(struct fb_fix_screeninfo *fix, struct fb_info_valkyrie *p) { memset(fix, 0, sizeof(*fix)); strcpy(fix->id, "valkyrie"); fix->mmio_start = p->valkyrie_regs_phys; fix->mmio_len = sizeof(struct valkyrie_regs); fix->type = FB_TYPE_PACKED_PIXELS; fix->smem_start = p->frame_buffer_phys + 0x1000; fix->smem_len = p->total_vram; fix->type_aux = 0; fix->ywrapstep = 0; fix->ypanstep = 0; fix->xpanstep = 0; } /* Fix must already be inited above */ static void valkyrie_par_to_fix(struct fb_par_valkyrie *par, struct fb_fix_screeninfo *fix) { fix->smem_len = valkyrie_vram_reqd(par->vmode, par->cmode); fix->visual = (par->cmode == CMODE_8) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_DIRECTCOLOR; fix->line_length = par->vxres << par->cmode; /* ywrapstep, xpanstep, ypanstep */ } static int __init valkyrie_init_info(struct fb_info *info, struct fb_info_valkyrie *p) { info->fbops = &valkyriefb_ops; info->screen_base = p->frame_buffer + 0x1000; info->flags = FBINFO_DEFAULT; info->pseudo_palette = p->pseudo_palette; info->par = &p->par; return fb_alloc_cmap(&info->cmap, 256, 0); } /* * Parse user specified options (`video=valkyriefb:') */ static int __init valkyriefb_setup(char *options) { char *this_opt; if (!options || !*options) return 0; while ((this_opt = strsep(&options, ",")) != NULL) { if (!strncmp(this_opt, "vmode:", 6)) { int vmode = simple_strtoul(this_opt+6, NULL, 0); if (vmode > 0 && vmode <= VMODE_MAX) default_vmode = vmode; } else if (!strncmp(this_opt, "cmode:", 6)) { int depth = simple_strtoul(this_opt+6, NULL, 0); switch (depth) { case 8: default_cmode = CMODE_8; break; case 15: case 16: default_cmode = CMODE_16; break; } } } return 0; } module_init(valkyriefb_init); MODULE_LICENSE("GPL"); |