1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * linux/drivers/video/sstfb.c -- voodoo graphics frame buffer 4 * 5 * Copyright (c) 2000-2002 Ghozlane Toumi <gtoumi@laposte.net> 6 * 7 * Created 15 Jan 2000 by Ghozlane Toumi 8 * 9 * Contributions (and many thanks) : 10 * 11 * 03/2001 James Simmons <jsimmons@infradead.org> 12 * 04/2001 Paul Mundt <lethal@chaoticdreams.org> 13 * 05/2001 Urs Ganse <ursg@uni.de> 14 * (initial work on voodoo2 port, interlace) 15 * 09/2002 Helge Deller <deller@gmx.de> 16 * (enable driver on big-endian machines (hppa), ioctl fixes) 17 * 12/2002 Helge Deller <deller@gmx.de> 18 * (port driver to new frambuffer infrastructure) 19 * 01/2003 Helge Deller <deller@gmx.de> 20 * (initial work on fb hardware acceleration for voodoo2) 21 * 08/2006 Alan Cox <alan@redhat.com> 22 * Remove never finished and bogus 24/32bit support 23 * Clean up macro abuse 24 * Minor tidying for format. 25 * 12/2006 Helge Deller <deller@gmx.de> 26 * add /sys/class/graphics/fbX/vgapass sysfs-interface 27 * add module option "mode_option" to set initial screen mode 28 * use fbdev default videomode database 29 * remove debug functions from ioctl 30 */ 31 32 /* 33 * The voodoo1 has the following memory mapped address space: 34 * 0x000000 - 0x3fffff : registers (4MB) 35 * 0x400000 - 0x7fffff : linear frame buffer (4MB) 36 * 0x800000 - 0xffffff : texture memory (8MB) 37 */ 38 39 /* 40 * misc notes, TODOs, toASKs, and deep thoughts 41 42 -TODO: at one time or another test that the mode is acceptable by the monitor 43 -ASK: Can I choose different ordering for the color bitfields (rgba argb ...) 44 which one should i use ? is there any preferred one ? It seems ARGB is 45 the one ... 46 -TODO: in set_var check the validity of timings (hsync vsync)... 47 -TODO: check and recheck the use of sst_wait_idle : we don't flush the fifo via 48 a nop command. so it's ok as long as the commands we pass don't go 49 through the fifo. warning: issuing a nop command seems to need pci_fifo 50 -FIXME: in case of failure in the init sequence, be sure we return to a safe 51 state. 52 - FIXME: Use accelerator for 2D scroll 53 -FIXME: 4MB boards have banked memory (FbiInit2 bits 1 & 20) 54 */ 55 56 /* 57 * debug info 58 * SST_DEBUG : enable debugging 59 * SST_DEBUG_REG : debug registers 60 * 0 : no debug 61 * 1 : dac calls, [un]set_bits, FbiInit 62 * 2 : insane debug level (log every register read/write) 63 * SST_DEBUG_FUNC : functions 64 * 0 : no debug 65 * 1 : function call / debug ioctl 66 * 2 : variables 67 * 3 : flood . you don't want to do that. trust me. 68 * SST_DEBUG_VAR : debug display/var structs 69 * 0 : no debug 70 * 1 : dumps display, fb_var 71 * 72 * sstfb specific ioctls: 73 * toggle vga (0x46db) : toggle vga_pass_through 74 */ 75 76 #undef SST_DEBUG 77 78 79 /* 80 * Includes 81 */ 82 83 #include <linux/aperture.h> 84 #include <linux/string.h> 85 #include <linux/kernel.h> 86 #include <linux/module.h> 87 #include <linux/fb.h> 88 #include <linux/pci.h> 89 #include <linux/delay.h> 90 #include <linux/init.h> 91 #include <asm/io.h> 92 #include <linux/uaccess.h> 93 #include <video/sstfb.h> 94 95 96 /* initialized by setup */ 97 98 static bool vgapass; /* enable VGA passthrough cable */ 99 static int mem; /* mem size in MB, 0 = autodetect */ 100 static bool clipping = 1; /* use clipping (slower, safer) */ 101 static int gfxclk; /* force FBI freq in Mhz . Dangerous */ 102 static bool slowpci; /* slow PCI settings */ 103 104 /* 105 Possible default video modes: 800x600@60, 640x480@75, 1024x768@76, 640x480@60 106 */ 107 #define DEFAULT_VIDEO_MODE "640x480@60" 108 109 static char *mode_option = DEFAULT_VIDEO_MODE; 110 111 enum { 112 ID_VOODOO1 = 0, 113 ID_VOODOO2 = 1, 114 }; 115 116 #define IS_VOODOO2(par) ((par)->type == ID_VOODOO2) 117 118 static struct sst_spec voodoo_spec[] = { 119 { .name = "Voodoo Graphics", .default_gfx_clock = 50000, .max_gfxclk = 60 }, 120 { .name = "Voodoo2", .default_gfx_clock = 75000, .max_gfxclk = 85 }, 121 }; 122 123 124 /* 125 * debug functions 126 */ 127 128 #if (SST_DEBUG_REG > 0) 129 static void sst_dbg_print_read_reg(u32 reg, u32 val) { 130 const char *regname; 131 switch (reg) { 132 case FBIINIT0: regname = "FbiInit0"; break; 133 case FBIINIT1: regname = "FbiInit1"; break; 134 case FBIINIT2: regname = "FbiInit2"; break; 135 case FBIINIT3: regname = "FbiInit3"; break; 136 case FBIINIT4: regname = "FbiInit4"; break; 137 case FBIINIT5: regname = "FbiInit5"; break; 138 case FBIINIT6: regname = "FbiInit6"; break; 139 default: regname = NULL; break; 140 } 141 if (regname == NULL) 142 r_ddprintk("sst_read(%#x): %#x\n", reg, val); 143 else 144 r_dprintk(" sst_read(%s): %#x\n", regname, val); 145 } 146 147 static void sst_dbg_print_write_reg(u32 reg, u32 val) { 148 const char *regname; 149 switch (reg) { 150 case FBIINIT0: regname = "FbiInit0"; break; 151 case FBIINIT1: regname = "FbiInit1"; break; 152 case FBIINIT2: regname = "FbiInit2"; break; 153 case FBIINIT3: regname = "FbiInit3"; break; 154 case FBIINIT4: regname = "FbiInit4"; break; 155 case FBIINIT5: regname = "FbiInit5"; break; 156 case FBIINIT6: regname = "FbiInit6"; break; 157 default: regname = NULL; break; 158 } 159 if (regname == NULL) 160 r_ddprintk("sst_write(%#x, %#x)\n", reg, val); 161 else 162 r_dprintk(" sst_write(%s, %#x)\n", regname, val); 163 } 164 #else /* (SST_DEBUG_REG > 0) */ 165 # define sst_dbg_print_read_reg(reg, val) do {} while(0) 166 # define sst_dbg_print_write_reg(reg, val) do {} while(0) 167 #endif /* (SST_DEBUG_REG > 0) */ 168 169 /* 170 * hardware access functions 171 */ 172 173 /* register access */ 174 #define sst_read(reg) __sst_read(par->mmio_vbase, reg) 175 #define sst_write(reg,val) __sst_write(par->mmio_vbase, reg, val) 176 #define sst_set_bits(reg,val) __sst_set_bits(par->mmio_vbase, reg, val) 177 #define sst_unset_bits(reg,val) __sst_unset_bits(par->mmio_vbase, reg, val) 178 #define sst_dac_read(reg) __sst_dac_read(par->mmio_vbase, reg) 179 #define sst_dac_write(reg,val) __sst_dac_write(par->mmio_vbase, reg, val) 180 #define dac_i_read(reg) __dac_i_read(par->mmio_vbase, reg) 181 #define dac_i_write(reg,val) __dac_i_write(par->mmio_vbase, reg, val) 182 183 static inline u32 __sst_read(u8 __iomem *vbase, u32 reg) 184 { 185 u32 ret = readl(vbase + reg); 186 sst_dbg_print_read_reg(reg, ret); 187 return ret; 188 } 189 190 static inline void __sst_write(u8 __iomem *vbase, u32 reg, u32 val) 191 { 192 sst_dbg_print_write_reg(reg, val); 193 writel(val, vbase + reg); 194 } 195 196 static inline void __sst_set_bits(u8 __iomem *vbase, u32 reg, u32 val) 197 { 198 r_dprintk("sst_set_bits(%#x, %#x)\n", reg, val); 199 __sst_write(vbase, reg, __sst_read(vbase, reg) | val); 200 } 201 202 static inline void __sst_unset_bits(u8 __iomem *vbase, u32 reg, u32 val) 203 { 204 r_dprintk("sst_unset_bits(%#x, %#x)\n", reg, val); 205 __sst_write(vbase, reg, __sst_read(vbase, reg) & ~val); 206 } 207 208 /* 209 * wait for the fbi chip. ASK: what happens if the fbi is stuck ? 210 * 211 * the FBI is supposed to be ready if we receive 5 time 212 * in a row a "idle" answer to our requests 213 */ 214 215 #define sst_wait_idle() __sst_wait_idle(par->mmio_vbase) 216 217 static int __sst_wait_idle(u8 __iomem *vbase) 218 { 219 int count = 0; 220 221 /* if (doFBINOP) __sst_write(vbase, NOPCMD, 0); */ 222 223 while(1) { 224 if (__sst_read(vbase, STATUS) & STATUS_FBI_BUSY) { 225 f_dddprintk("status: busy\n"); 226 /* FIXME basically, this is a busy wait. maybe not that good. oh well; 227 * this is a small loop after all. 228 * Or maybe we should use mdelay() or udelay() here instead ? */ 229 count = 0; 230 } else { 231 count++; 232 f_dddprintk("status: idle(%d)\n", count); 233 } 234 if (count >= 5) return 1; 235 /* XXX do something to avoid hanging the machine if the voodoo is out */ 236 } 237 } 238 239 240 /* dac access */ 241 /* dac_read should be remaped to FbiInit2 (via the pci reg init_enable) */ 242 static u8 __sst_dac_read(u8 __iomem *vbase, u8 reg) 243 { 244 u8 ret; 245 246 reg &= 0x07; 247 __sst_write(vbase, DAC_DATA, ((u32)reg << 8) | DAC_READ_CMD ); 248 __sst_wait_idle(vbase); 249 /* udelay(10); */ 250 ret = __sst_read(vbase, DAC_READ) & 0xff; 251 r_dprintk("sst_dac_read(%#x): %#x\n", reg, ret); 252 253 return ret; 254 } 255 256 static void __sst_dac_write(u8 __iomem *vbase, u8 reg, u8 val) 257 { 258 r_dprintk("sst_dac_write(%#x, %#x)\n", reg, val); 259 reg &= 0x07; 260 __sst_write(vbase, DAC_DATA,(((u32)reg << 8)) | (u32)val); 261 __sst_wait_idle(vbase); 262 } 263 264 /* indexed access to ti/att dacs */ 265 static u32 __dac_i_read(u8 __iomem *vbase, u8 reg) 266 { 267 u32 ret; 268 269 __sst_dac_write(vbase, DACREG_ADDR_I, reg); 270 ret = __sst_dac_read(vbase, DACREG_DATA_I); 271 r_dprintk("sst_dac_read_i(%#x): %#x\n", reg, ret); 272 return ret; 273 } 274 static void __dac_i_write(u8 __iomem *vbase, u8 reg,u8 val) 275 { 276 r_dprintk("sst_dac_write_i(%#x, %#x)\n", reg, val); 277 __sst_dac_write(vbase, DACREG_ADDR_I, reg); 278 __sst_dac_write(vbase, DACREG_DATA_I, val); 279 } 280 281 /* compute the m,n,p , returns the real freq 282 * (ics datasheet : N <-> N1 , P <-> N2) 283 * 284 * Fout= Fref * (M+2)/( 2^P * (N+2)) 285 * we try to get close to the asked freq 286 * with P as high, and M as low as possible 287 * range: 288 * ti/att : 0 <= M <= 255; 0 <= P <= 3; 0<= N <= 63 289 * ics : 1 <= M <= 127; 0 <= P <= 3; 1<= N <= 31 290 * we'll use the lowest limitation, should be precise enouth 291 */ 292 static int sst_calc_pll(const int freq, int *freq_out, struct pll_timing *t) 293 { 294 int m, m2, n, p, best_err, fout; 295 int best_n = -1; 296 int best_m = -1; 297 298 best_err = freq; 299 p = 3; 300 /* f * 2^P = vco should be less than VCOmax ~ 250 MHz for ics*/ 301 while (((1 << p) * freq > VCO_MAX) && (p >= 0)) 302 p--; 303 if (p == -1) 304 return -EINVAL; 305 for (n = 1; n < 32; n++) { 306 /* calc 2 * m so we can round it later*/ 307 m2 = (2 * freq * (1 << p) * (n + 2) ) / DAC_FREF - 4 ; 308 309 m = (m2 % 2 ) ? m2/2+1 : m2/2 ; 310 if (m >= 128) 311 break; 312 fout = (DAC_FREF * (m + 2)) / ((1 << p) * (n + 2)); 313 if ((abs(fout - freq) < best_err) && (m > 0)) { 314 best_n = n; 315 best_m = m; 316 best_err = abs(fout - freq); 317 /* we get the lowest m , allowing 0.5% error in freq*/ 318 if (200*best_err < freq) break; 319 } 320 } 321 if (best_n == -1) /* unlikely, but who knows ? */ 322 return -EINVAL; 323 t->p = p; 324 t->n = best_n; 325 t->m = best_m; 326 *freq_out = (DAC_FREF * (t->m + 2)) / ((1 << t->p) * (t->n + 2)); 327 f_ddprintk ("m: %d, n: %d, p: %d, F: %dKhz\n", 328 t->m, t->n, t->p, *freq_out); 329 return 0; 330 } 331 332 /* 333 * clear lfb screen 334 */ 335 static void sstfb_clear_screen(struct fb_info *info) 336 { 337 /* clear screen */ 338 fb_memset_io(info->screen_base, 0, info->fix.smem_len); 339 } 340 341 342 /** 343 * sstfb_check_var - Optional function. Validates a var passed in. 344 * @var: frame buffer variable screen structure 345 * @info: frame buffer structure that represents a single frame buffer 346 * 347 * Limit to the abilities of a single chip as SLI is not supported 348 * by this driver. 349 */ 350 351 static int sstfb_check_var(struct fb_var_screeninfo *var, 352 struct fb_info *info) 353 { 354 struct sstfb_par *par = info->par; 355 int hSyncOff = var->xres + var->right_margin + var->left_margin; 356 int vSyncOff = var->yres + var->lower_margin + var->upper_margin; 357 int vBackPorch = var->left_margin, yDim = var->yres; 358 int vSyncOn = var->vsync_len; 359 int tiles_in_X, real_length; 360 unsigned int freq; 361 362 if (sst_calc_pll(PICOS2KHZ(var->pixclock), &freq, &par->pll)) { 363 printk(KERN_ERR "sstfb: Pixclock at %ld KHZ out of range\n", 364 PICOS2KHZ(var->pixclock)); 365 return -EINVAL; 366 } 367 var->pixclock = KHZ2PICOS(freq); 368 369 if (var->vmode & FB_VMODE_INTERLACED) 370 vBackPorch += (vBackPorch % 2); 371 if (var->vmode & FB_VMODE_DOUBLE) { 372 vBackPorch <<= 1; 373 yDim <<=1; 374 vSyncOn <<=1; 375 vSyncOff <<=1; 376 } 377 378 switch (var->bits_per_pixel) { 379 case 0 ... 16 : 380 var->bits_per_pixel = 16; 381 break; 382 default : 383 printk(KERN_ERR "sstfb: Unsupported bpp %d\n", var->bits_per_pixel); 384 return -EINVAL; 385 } 386 387 /* validity tests */ 388 if (var->xres <= 1 || yDim <= 0 || var->hsync_len <= 1 || 389 hSyncOff <= 1 || var->left_margin <= 2 || vSyncOn <= 0 || 390 vSyncOff <= 0 || vBackPorch <= 0) { 391 return -EINVAL; 392 } 393 394 if (IS_VOODOO2(par)) { 395 /* Voodoo 2 limits */ 396 tiles_in_X = (var->xres + 63 ) / 64 * 2; 397 398 if (var->xres > POW2(11) || yDim >= POW2(11)) { 399 printk(KERN_ERR "sstfb: Unsupported resolution %dx%d\n", 400 var->xres, var->yres); 401 return -EINVAL; 402 } 403 404 if (var->hsync_len > POW2(9) || hSyncOff > POW2(11) || 405 var->left_margin - 2 >= POW2(9) || vSyncOn >= POW2(13) || 406 vSyncOff >= POW2(13) || vBackPorch >= POW2(9) || 407 tiles_in_X >= POW2(6) || tiles_in_X <= 0) { 408 printk(KERN_ERR "sstfb: Unsupported timings\n"); 409 return -EINVAL; 410 } 411 } else { 412 /* Voodoo limits */ 413 tiles_in_X = (var->xres + 63 ) / 64; 414 415 if (var->vmode) { 416 printk(KERN_ERR "sstfb: Interlace/doublescan not supported %#x\n", 417 var->vmode); 418 return -EINVAL; 419 } 420 if (var->xres > POW2(10) || var->yres >= POW2(10)) { 421 printk(KERN_ERR "sstfb: Unsupported resolution %dx%d\n", 422 var->xres, var->yres); 423 return -EINVAL; 424 } 425 if (var->hsync_len > POW2(8) || hSyncOff - 1 > POW2(10) || 426 var->left_margin - 2 >= POW2(8) || vSyncOn >= POW2(12) || 427 vSyncOff >= POW2(12) || vBackPorch >= POW2(8) || 428 tiles_in_X >= POW2(4) || tiles_in_X <= 0) { 429 printk(KERN_ERR "sstfb: Unsupported timings\n"); 430 return -EINVAL; 431 } 432 } 433 434 /* it seems that the fbi uses tiles of 64x16 pixels to "map" the mem */ 435 /* FIXME: i don't like this... looks wrong */ 436 real_length = tiles_in_X * (IS_VOODOO2(par) ? 32 : 64 ) 437 * ((var->bits_per_pixel == 16) ? 2 : 4); 438 439 if (real_length * yDim > info->fix.smem_len) { 440 printk(KERN_ERR "sstfb: Not enough video memory\n"); 441 return -ENOMEM; 442 } 443 444 var->sync &= (FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT); 445 var->vmode &= (FB_VMODE_INTERLACED | FB_VMODE_DOUBLE); 446 var->xoffset = 0; 447 var->yoffset = 0; 448 var->height = -1; 449 var->width = -1; 450 451 /* 452 * correct the color bit fields 453 */ 454 /* var->{red|green|blue}.msb_right = 0; */ 455 456 switch (var->bits_per_pixel) { 457 case 16: /* RGB 565 LfbMode 0 */ 458 var->red.length = 5; 459 var->green.length = 6; 460 var->blue.length = 5; 461 var->transp.length = 0; 462 463 var->red.offset = 11; 464 var->green.offset = 5; 465 var->blue.offset = 0; 466 var->transp.offset = 0; 467 break; 468 default: 469 return -EINVAL; 470 } 471 return 0; 472 } 473 474 /** 475 * sstfb_set_par - Optional function. Alters the hardware state. 476 * @info: frame buffer structure that represents a single frame buffer 477 */ 478 static int sstfb_set_par(struct fb_info *info) 479 { 480 struct sstfb_par *par = info->par; 481 u32 lfbmode, fbiinit1, fbiinit2, fbiinit3, fbiinit5, fbiinit6=0; 482 struct pci_dev *sst_dev = par->dev; 483 unsigned int freq; 484 int ntiles; 485 486 par->hSyncOff = info->var.xres + info->var.right_margin + info->var.left_margin; 487 488 par->yDim = info->var.yres; 489 par->vSyncOn = info->var.vsync_len; 490 par->vSyncOff = info->var.yres + info->var.lower_margin + info->var.upper_margin; 491 par->vBackPorch = info->var.upper_margin; 492 493 /* We need par->pll */ 494 sst_calc_pll(PICOS2KHZ(info->var.pixclock), &freq, &par->pll); 495 496 if (info->var.vmode & FB_VMODE_INTERLACED) 497 par->vBackPorch += (par->vBackPorch % 2); 498 if (info->var.vmode & FB_VMODE_DOUBLE) { 499 par->vBackPorch <<= 1; 500 par->yDim <<=1; 501 par->vSyncOn <<=1; 502 par->vSyncOff <<=1; 503 } 504 505 if (IS_VOODOO2(par)) { 506 /* voodoo2 has 32 pixel wide tiles , BUT strange things 507 happen with odd number of tiles */ 508 par->tiles_in_X = (info->var.xres + 63 ) / 64 * 2; 509 } else { 510 /* voodoo1 has 64 pixels wide tiles. */ 511 par->tiles_in_X = (info->var.xres + 63 ) / 64; 512 } 513 514 f_ddprintk("hsync_len hSyncOff vsync_len vSyncOff\n"); 515 f_ddprintk("%-7d %-8d %-7d %-8d\n", 516 info->var.hsync_len, par->hSyncOff, 517 par->vSyncOn, par->vSyncOff); 518 f_ddprintk("left_margin upper_margin xres yres Freq\n"); 519 f_ddprintk("%-10d %-10d %-4d %-4d %-8ld\n", 520 info->var.left_margin, info->var.upper_margin, 521 info->var.xres, info->var.yres, PICOS2KHZ(info->var.pixclock)); 522 523 sst_write(NOPCMD, 0); 524 sst_wait_idle(); 525 pci_write_config_dword(sst_dev, PCI_INIT_ENABLE, PCI_EN_INIT_WR); 526 sst_set_bits(FBIINIT1, VIDEO_RESET); 527 sst_set_bits(FBIINIT0, FBI_RESET | FIFO_RESET); 528 sst_unset_bits(FBIINIT2, EN_DRAM_REFRESH); 529 sst_wait_idle(); 530 531 /*sst_unset_bits (FBIINIT0, FBI_RESET); / reenable FBI ? */ 532 533 sst_write(BACKPORCH, par->vBackPorch << 16 | (info->var.left_margin - 2)); 534 sst_write(VIDEODIMENSIONS, par->yDim << 16 | (info->var.xres - 1)); 535 sst_write(HSYNC, (par->hSyncOff - 1) << 16 | (info->var.hsync_len - 1)); 536 sst_write(VSYNC, par->vSyncOff << 16 | par->vSyncOn); 537 538 fbiinit2 = sst_read(FBIINIT2); 539 fbiinit3 = sst_read(FBIINIT3); 540 541 /* everything is reset. we enable fbiinit2/3 remap : dac access ok */ 542 pci_write_config_dword(sst_dev, PCI_INIT_ENABLE, 543 PCI_EN_INIT_WR | PCI_REMAP_DAC ); 544 545 par->dac_sw.set_vidmod(info, info->var.bits_per_pixel); 546 547 /* set video clock */ 548 par->dac_sw.set_pll(info, &par->pll, VID_CLOCK); 549 550 /* disable fbiinit2/3 remap */ 551 pci_write_config_dword(sst_dev, PCI_INIT_ENABLE, 552 PCI_EN_INIT_WR); 553 554 /* restore fbiinit2/3 */ 555 sst_write(FBIINIT2,fbiinit2); 556 sst_write(FBIINIT3,fbiinit3); 557 558 fbiinit1 = (sst_read(FBIINIT1) & VIDEO_MASK) 559 | EN_DATA_OE 560 | EN_BLANK_OE 561 | EN_HVSYNC_OE 562 | EN_DCLK_OE 563 /* | (15 << TILES_IN_X_SHIFT) */ 564 | SEL_INPUT_VCLK_2X 565 /* | (2 << VCLK_2X_SEL_DEL_SHIFT) 566 | (2 << VCLK_DEL_SHIFT) */; 567 /* try with vclk_in_delay =0 (bits 29:30) , vclk_out_delay =0 (bits(27:28) 568 in (near) future set them accordingly to revision + resolution (cf glide) 569 first understand what it stands for :) 570 FIXME: there are some artefacts... check for the vclk_in_delay 571 lets try with 6ns delay in both vclk_out & in... 572 doh... they're still there :\ 573 */ 574 575 ntiles = par->tiles_in_X; 576 if (IS_VOODOO2(par)) { 577 fbiinit1 |= ((ntiles & 0x20) >> 5) << TILES_IN_X_MSB_SHIFT 578 | ((ntiles & 0x1e) >> 1) << TILES_IN_X_SHIFT; 579 /* as the only value of importance for us in fbiinit6 is tiles in X (lsb), 580 and as reading fbinit 6 will return crap (see FBIINIT6_DEFAULT) we just 581 write our value. BTW due to the dac unable to read odd number of tiles, this 582 field is always null ... */ 583 fbiinit6 = (ntiles & 0x1) << TILES_IN_X_LSB_SHIFT; 584 } 585 else 586 fbiinit1 |= ntiles << TILES_IN_X_SHIFT; 587 588 switch (info->var.bits_per_pixel) { 589 case 16: 590 fbiinit1 |= SEL_SOURCE_VCLK_2X_SEL; 591 break; 592 default: 593 return -EINVAL; 594 } 595 sst_write(FBIINIT1, fbiinit1); 596 if (IS_VOODOO2(par)) { 597 sst_write(FBIINIT6, fbiinit6); 598 fbiinit5=sst_read(FBIINIT5) & FBIINIT5_MASK ; 599 if (info->var.vmode & FB_VMODE_INTERLACED) 600 fbiinit5 |= INTERLACE; 601 if (info->var.vmode & FB_VMODE_DOUBLE) 602 fbiinit5 |= VDOUBLESCAN; 603 if (info->var.sync & FB_SYNC_HOR_HIGH_ACT) 604 fbiinit5 |= HSYNC_HIGH; 605 if (info->var.sync & FB_SYNC_VERT_HIGH_ACT) 606 fbiinit5 |= VSYNC_HIGH; 607 sst_write(FBIINIT5, fbiinit5); 608 } 609 sst_wait_idle(); 610 sst_unset_bits(FBIINIT1, VIDEO_RESET); 611 sst_unset_bits(FBIINIT0, FBI_RESET | FIFO_RESET); 612 sst_set_bits(FBIINIT2, EN_DRAM_REFRESH); 613 /* disables fbiinit writes */ 614 pci_write_config_dword(sst_dev, PCI_INIT_ENABLE, PCI_EN_FIFO_WR); 615 616 /* set lfbmode : set mode + front buffer for reads/writes 617 + disable pipeline */ 618 switch (info->var.bits_per_pixel) { 619 case 16: 620 lfbmode = LFB_565; 621 break; 622 default: 623 return -EINVAL; 624 } 625 626 #if defined(__BIG_ENDIAN) 627 /* Enable byte-swizzle functionality in hardware. 628 * With this enabled, all our read- and write-accesses to 629 * the voodoo framebuffer can be done in native format, and 630 * the hardware will automatically convert it to little-endian. 631 * - tested on HP-PARISC, Helge Deller <deller@gmx.de> */ 632 lfbmode |= ( LFB_WORD_SWIZZLE_WR | LFB_BYTE_SWIZZLE_WR | 633 LFB_WORD_SWIZZLE_RD | LFB_BYTE_SWIZZLE_RD ); 634 #endif 635 636 if (clipping) { 637 sst_write(LFBMODE, lfbmode | EN_PXL_PIPELINE); 638 /* 639 * Set "clipping" dimensions. If clipping is disabled and 640 * writes to offscreen areas of the framebuffer are performed, 641 * the "behaviour is undefined" (_very_ undefined) - Urs 642 */ 643 /* btw, it requires enabling pixel pipeline in LFBMODE . 644 off screen read/writes will just wrap and read/print pixels 645 on screen. Ugly but not that dangerous */ 646 f_ddprintk("setting clipping dimensions 0..%d, 0..%d\n", 647 info->var.xres - 1, par->yDim - 1); 648 649 sst_write(CLIP_LEFT_RIGHT, info->var.xres); 650 sst_write(CLIP_LOWY_HIGHY, par->yDim); 651 sst_set_bits(FBZMODE, EN_CLIPPING | EN_RGB_WRITE); 652 } else { 653 /* no clipping : direct access, no pipeline */ 654 sst_write(LFBMODE, lfbmode); 655 } 656 return 0; 657 } 658 659 /** 660 * sstfb_setcolreg - Optional function. Sets a color register. 661 * @regno: hardware colormap register 662 * @red: frame buffer colormap structure 663 * @green: The green value which can be up to 16 bits wide 664 * @blue: The blue value which can be up to 16 bits wide. 665 * @transp: If supported the alpha value which can be up to 16 bits wide. 666 * @info: frame buffer info structure 667 */ 668 static int sstfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, 669 u_int transp, struct fb_info *info) 670 { 671 struct sstfb_par *par = info->par; 672 u32 col; 673 674 f_dddprintk("sstfb_setcolreg\n"); 675 f_dddprintk("%-2d rgbt: %#x, %#x, %#x, %#x\n", 676 regno, red, green, blue, transp); 677 if (regno > 15) 678 return 0; 679 680 red >>= (16 - info->var.red.length); 681 green >>= (16 - info->var.green.length); 682 blue >>= (16 - info->var.blue.length); 683 transp >>= (16 - info->var.transp.length); 684 col = (red << info->var.red.offset) 685 | (green << info->var.green.offset) 686 | (blue << info->var.blue.offset) 687 | (transp << info->var.transp.offset); 688 689 par->palette[regno] = col; 690 691 return 0; 692 } 693 694 static void sstfb_setvgapass( struct fb_info *info, int enable ) 695 { 696 struct sstfb_par *par = info->par; 697 struct pci_dev *sst_dev = par->dev; 698 u32 fbiinit0, tmp; 699 700 enable = enable ? 1:0; 701 if (par->vgapass == enable) 702 return; 703 par->vgapass = enable; 704 705 pci_read_config_dword(sst_dev, PCI_INIT_ENABLE, &tmp); 706 pci_write_config_dword(sst_dev, PCI_INIT_ENABLE, 707 tmp | PCI_EN_INIT_WR ); 708 fbiinit0 = sst_read (FBIINIT0); 709 if (par->vgapass) { 710 sst_write(FBIINIT0, fbiinit0 & ~DIS_VGA_PASSTHROUGH); 711 fb_info(info, "Enabling VGA pass-through\n"); 712 } else { 713 sst_write(FBIINIT0, fbiinit0 | DIS_VGA_PASSTHROUGH); 714 fb_info(info, "Disabling VGA pass-through\n"); 715 } 716 pci_write_config_dword(sst_dev, PCI_INIT_ENABLE, tmp); 717 } 718 719 #ifdef CONFIG_FB_DEVICE 720 static ssize_t store_vgapass(struct device *device, struct device_attribute *attr, 721 const char *buf, size_t count) 722 { 723 struct fb_info *info = dev_get_drvdata(device); 724 char ** last = NULL; 725 int val; 726 727 val = simple_strtoul(buf, last, 0); 728 sstfb_setvgapass(info, val); 729 730 return count; 731 } 732 733 static ssize_t show_vgapass(struct device *device, struct device_attribute *attr, 734 char *buf) 735 { 736 struct fb_info *info = dev_get_drvdata(device); 737 struct sstfb_par *par = info->par; 738 return sprintf(buf, "%d\n", par->vgapass); 739 } 740 741 static struct device_attribute device_attrs[] = { 742 __ATTR(vgapass, S_IRUGO|S_IWUSR, show_vgapass, store_vgapass) 743 }; 744 #endif 745 746 static int sstfb_ioctl(struct fb_info *info, unsigned int cmd, 747 unsigned long arg) 748 { 749 struct sstfb_par *par; 750 u32 val; 751 752 switch (cmd) { 753 /* set/get VGA pass_through mode */ 754 case SSTFB_SET_VGAPASS: 755 if (copy_from_user(&val, (void __user *)arg, sizeof(val))) 756 return -EFAULT; 757 sstfb_setvgapass(info, val); 758 return 0; 759 case SSTFB_GET_VGAPASS: 760 par = info->par; 761 val = par->vgapass; 762 if (copy_to_user((void __user *)arg, &val, sizeof(val))) 763 return -EFAULT; 764 return 0; 765 } 766 767 return -EINVAL; 768 } 769 770 771 /* 772 * Screen-to-Screen BitBlt 2D command (for the bmove fb op.) - Voodoo2 only 773 */ 774 #if 0 775 static void sstfb_copyarea(struct fb_info *info, const struct fb_copyarea *area) 776 { 777 struct sstfb_par *par = info->par; 778 u32 stride = info->fix.line_length; 779 780 if (!IS_VOODOO2(par)) 781 return; 782 783 sst_write(BLTSRCBASEADDR, 0); 784 sst_write(BLTDSTBASEADDR, 0); 785 sst_write(BLTROP, BLTROP_COPY); 786 sst_write(BLTXYSTRIDES, stride | (stride << 16)); 787 sst_write(BLTSRCXY, area->sx | (area->sy << 16)); 788 sst_write(BLTDSTXY, area->dx | (area->dy << 16)); 789 sst_write(BLTSIZE, area->width | (area->height << 16)); 790 sst_write(BLTCOMMAND, BLT_SCR2SCR_BITBLT | LAUNCH_BITBLT | 791 (BLT_16BPP_FMT << 3) /* | BIT(14) */ | BIT(15) ); 792 sst_wait_idle(); 793 } 794 #endif 795 796 797 /* 798 * FillRect 2D command (solidfill or invert (via ROP_XOR)) - Voodoo2 only 799 */ 800 #if 0 801 static void sstfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect) 802 { 803 struct sstfb_par *par = info->par; 804 u32 stride = info->fix.line_length; 805 806 if (!IS_VOODOO2(par)) 807 return; 808 809 sst_write(BLTCLIPX, info->var.xres); 810 sst_write(BLTCLIPY, info->var.yres); 811 812 sst_write(BLTDSTBASEADDR, 0); 813 sst_write(BLTCOLOR, rect->color); 814 sst_write(BLTROP, rect->rop == ROP_COPY ? BLTROP_COPY : BLTROP_XOR); 815 sst_write(BLTXYSTRIDES, stride | (stride << 16)); 816 sst_write(BLTDSTXY, rect->dx | (rect->dy << 16)); 817 sst_write(BLTSIZE, rect->width | (rect->height << 16)); 818 sst_write(BLTCOMMAND, BLT_RECFILL_BITBLT | LAUNCH_BITBLT 819 | (BLT_16BPP_FMT << 3) /* | BIT(14) */ | BIT(15) | BIT(16) ); 820 sst_wait_idle(); 821 } 822 #endif 823 824 825 826 /* 827 * get lfb size 828 */ 829 static int sst_get_memsize(struct fb_info *info, __u32 *memsize) 830 { 831 u8 __iomem *fbbase_virt = info->screen_base; 832 833 /* force memsize */ 834 if (mem >= 1 && mem <= 4) { 835 *memsize = (mem * 0x100000); 836 printk(KERN_INFO "supplied memsize: %#x\n", *memsize); 837 return 1; 838 } 839 840 writel(0xdeadbeef, fbbase_virt); 841 writel(0xdeadbeef, fbbase_virt+0x100000); 842 writel(0xdeadbeef, fbbase_virt+0x200000); 843 f_ddprintk("0MB: %#x, 1MB: %#x, 2MB: %#x\n", 844 readl(fbbase_virt), readl(fbbase_virt + 0x100000), 845 readl(fbbase_virt + 0x200000)); 846 847 writel(0xabcdef01, fbbase_virt); 848 849 f_ddprintk("0MB: %#x, 1MB: %#x, 2MB: %#x\n", 850 readl(fbbase_virt), readl(fbbase_virt + 0x100000), 851 readl(fbbase_virt + 0x200000)); 852 853 /* checks for 4mb lfb, then 2, then defaults to 1 */ 854 if (readl(fbbase_virt + 0x200000) == 0xdeadbeef) 855 *memsize = 0x400000; 856 else if (readl(fbbase_virt + 0x100000) == 0xdeadbeef) 857 *memsize = 0x200000; 858 else 859 *memsize = 0x100000; 860 f_ddprintk("detected memsize: %dMB\n", *memsize >> 20); 861 return 1; 862 } 863 864 865 /* 866 * DAC detection routines 867 */ 868 869 /* fbi should be idle, and fifo emty and mem disabled */ 870 /* supposed to detect AT&T ATT20C409 and Ti TVP3409 ramdacs */ 871 872 static int sst_detect_att(struct fb_info *info) 873 { 874 struct sstfb_par *par = info->par; 875 int i, mir, dir; 876 877 for (i = 0; i < 3; i++) { 878 sst_dac_write(DACREG_WMA, 0); /* backdoor */ 879 sst_dac_read(DACREG_RMR); /* read 4 times RMR */ 880 sst_dac_read(DACREG_RMR); 881 sst_dac_read(DACREG_RMR); 882 sst_dac_read(DACREG_RMR); 883 /* the fifth time, CR0 is read */ 884 sst_dac_read(DACREG_RMR); 885 /* the 6th, manufacturer id register */ 886 mir = sst_dac_read(DACREG_RMR); 887 /*the 7th, device ID register */ 888 dir = sst_dac_read(DACREG_RMR); 889 f_ddprintk("mir: %#x, dir: %#x\n", mir, dir); 890 if (mir == DACREG_MIR_ATT && dir == DACREG_DIR_ATT) { 891 return 1; 892 } 893 } 894 return 0; 895 } 896 897 static int sst_detect_ti(struct fb_info *info) 898 { 899 struct sstfb_par *par = info->par; 900 int i, mir, dir; 901 902 for (i = 0; i<3; i++) { 903 sst_dac_write(DACREG_WMA, 0); /* backdoor */ 904 sst_dac_read(DACREG_RMR); /* read 4 times RMR */ 905 sst_dac_read(DACREG_RMR); 906 sst_dac_read(DACREG_RMR); 907 sst_dac_read(DACREG_RMR); 908 /* the fifth time, CR0 is read */ 909 sst_dac_read(DACREG_RMR); 910 /* the 6th, manufacturer id register */ 911 mir = sst_dac_read(DACREG_RMR); 912 /*the 7th, device ID register */ 913 dir = sst_dac_read(DACREG_RMR); 914 f_ddprintk("mir: %#x, dir: %#x\n", mir, dir); 915 if ((mir == DACREG_MIR_TI ) && (dir == DACREG_DIR_TI)) { 916 return 1; 917 } 918 } 919 return 0; 920 } 921 922 /* 923 * try to detect ICS5342 ramdac 924 * we get the 1st byte (M value) of preset f1,f7 and fB 925 * why those 3 ? mmmh... for now, i'll do it the glide way... 926 * and ask questions later. anyway, it seems that all the freq registers are 927 * really at their default state (cf specs) so i ask again, why those 3 regs ? 928 * mmmmh.. it seems that's much more ugly than i thought. we use f0 and fA for 929 * pll programming, so in fact, we *hope* that the f1, f7 & fB won't be 930 * touched... 931 * is it really safe ? how can i reset this ramdac ? geee... 932 */ 933 static int sst_detect_ics(struct fb_info *info) 934 { 935 struct sstfb_par *par = info->par; 936 int m_clk0_1, m_clk0_7, m_clk1_b; 937 int n_clk0_1, n_clk0_7, n_clk1_b; 938 int i; 939 940 for (i = 0; i<5; i++ ) { 941 sst_dac_write(DACREG_ICS_PLLRMA, 0x1); /* f1 */ 942 m_clk0_1 = sst_dac_read(DACREG_ICS_PLLDATA); 943 n_clk0_1 = sst_dac_read(DACREG_ICS_PLLDATA); 944 sst_dac_write(DACREG_ICS_PLLRMA, 0x7); /* f7 */ 945 m_clk0_7 = sst_dac_read(DACREG_ICS_PLLDATA); 946 n_clk0_7 = sst_dac_read(DACREG_ICS_PLLDATA); 947 sst_dac_write(DACREG_ICS_PLLRMA, 0xb); /* fB */ 948 m_clk1_b= sst_dac_read(DACREG_ICS_PLLDATA); 949 n_clk1_b= sst_dac_read(DACREG_ICS_PLLDATA); 950 f_ddprintk("m_clk0_1: %#x, m_clk0_7: %#x, m_clk1_b: %#x\n", 951 m_clk0_1, m_clk0_7, m_clk1_b); 952 f_ddprintk("n_clk0_1: %#x, n_clk0_7: %#x, n_clk1_b: %#x\n", 953 n_clk0_1, n_clk0_7, n_clk1_b); 954 if (( m_clk0_1 == DACREG_ICS_PLL_CLK0_1_INI) 955 && (m_clk0_7 == DACREG_ICS_PLL_CLK0_7_INI) 956 && (m_clk1_b == DACREG_ICS_PLL_CLK1_B_INI)) { 957 return 1; 958 } 959 } 960 return 0; 961 } 962 963 964 /* 965 * gfx, video, pci fifo should be reset, dram refresh disabled 966 * see detect_dac 967 */ 968 969 static int sst_set_pll_att_ti(struct fb_info *info, 970 const struct pll_timing *t, const int clock) 971 { 972 struct sstfb_par *par = info->par; 973 u8 cr0, cc; 974 975 /* enable indexed mode */ 976 sst_dac_write(DACREG_WMA, 0); /* backdoor */ 977 sst_dac_read(DACREG_RMR); /* 1 time: RMR */ 978 sst_dac_read(DACREG_RMR); /* 2 RMR */ 979 sst_dac_read(DACREG_RMR); /* 3 // */ 980 sst_dac_read(DACREG_RMR); /* 4 // */ 981 cr0 = sst_dac_read(DACREG_RMR); /* 5 CR0 */ 982 983 sst_dac_write(DACREG_WMA, 0); 984 sst_dac_read(DACREG_RMR); 985 sst_dac_read(DACREG_RMR); 986 sst_dac_read(DACREG_RMR); 987 sst_dac_read(DACREG_RMR); 988 sst_dac_write(DACREG_RMR, (cr0 & 0xf0) 989 | DACREG_CR0_EN_INDEXED 990 | DACREG_CR0_8BIT 991 | DACREG_CR0_PWDOWN ); 992 /* so, now we are in indexed mode . dunno if its common, but 993 i find this way of doing things a little bit weird :p */ 994 995 udelay(300); 996 cc = dac_i_read(DACREG_CC_I); 997 switch (clock) { 998 case VID_CLOCK: 999 dac_i_write(DACREG_AC0_I, t->m); 1000 dac_i_write(DACREG_AC1_I, t->p << 6 | t->n); 1001 dac_i_write(DACREG_CC_I, 1002 (cc & 0x0f) | DACREG_CC_CLKA | DACREG_CC_CLKA_C); 1003 break; 1004 case GFX_CLOCK: 1005 dac_i_write(DACREG_BD0_I, t->m); 1006 dac_i_write(DACREG_BD1_I, t->p << 6 | t->n); 1007 dac_i_write(DACREG_CC_I, 1008 (cc & 0xf0) | DACREG_CC_CLKB | DACREG_CC_CLKB_D); 1009 break; 1010 default: 1011 dprintk("%s: wrong clock code '%d'\n", 1012 __func__, clock); 1013 return 0; 1014 } 1015 udelay(300); 1016 1017 /* power up the dac & return to "normal" non-indexed mode */ 1018 dac_i_write(DACREG_CR0_I, 1019 cr0 & ~DACREG_CR0_PWDOWN & ~DACREG_CR0_EN_INDEXED); 1020 return 1; 1021 } 1022 1023 static int sst_set_pll_ics(struct fb_info *info, 1024 const struct pll_timing *t, const int clock) 1025 { 1026 struct sstfb_par *par = info->par; 1027 u8 pll_ctrl; 1028 1029 sst_dac_write(DACREG_ICS_PLLRMA, DACREG_ICS_PLL_CTRL); 1030 pll_ctrl = sst_dac_read(DACREG_ICS_PLLDATA); 1031 switch(clock) { 1032 case VID_CLOCK: 1033 sst_dac_write(DACREG_ICS_PLLWMA, 0x0); /* CLK0, f0 */ 1034 sst_dac_write(DACREG_ICS_PLLDATA, t->m); 1035 sst_dac_write(DACREG_ICS_PLLDATA, t->p << 5 | t->n); 1036 /* selects freq f0 for clock 0 */ 1037 sst_dac_write(DACREG_ICS_PLLWMA, DACREG_ICS_PLL_CTRL); 1038 sst_dac_write(DACREG_ICS_PLLDATA, 1039 (pll_ctrl & 0xd8) 1040 | DACREG_ICS_CLK0 1041 | DACREG_ICS_CLK0_0); 1042 break; 1043 case GFX_CLOCK : 1044 sst_dac_write(DACREG_ICS_PLLWMA, 0xa); /* CLK1, fA */ 1045 sst_dac_write(DACREG_ICS_PLLDATA, t->m); 1046 sst_dac_write(DACREG_ICS_PLLDATA, t->p << 5 | t->n); 1047 /* selects freq fA for clock 1 */ 1048 sst_dac_write(DACREG_ICS_PLLWMA, DACREG_ICS_PLL_CTRL); 1049 sst_dac_write(DACREG_ICS_PLLDATA, 1050 (pll_ctrl & 0xef) | DACREG_ICS_CLK1_A); 1051 break; 1052 default: 1053 dprintk("%s: wrong clock code '%d'\n", 1054 __func__, clock); 1055 return 0; 1056 } 1057 udelay(300); 1058 return 1; 1059 } 1060 1061 static void sst_set_vidmod_att_ti(struct fb_info *info, const int bpp) 1062 { 1063 struct sstfb_par *par = info->par; 1064 u8 cr0; 1065 1066 sst_dac_write(DACREG_WMA, 0); /* backdoor */ 1067 sst_dac_read(DACREG_RMR); /* read 4 times RMR */ 1068 sst_dac_read(DACREG_RMR); 1069 sst_dac_read(DACREG_RMR); 1070 sst_dac_read(DACREG_RMR); 1071 /* the fifth time, CR0 is read */ 1072 cr0 = sst_dac_read(DACREG_RMR); 1073 1074 sst_dac_write(DACREG_WMA, 0); /* backdoor */ 1075 sst_dac_read(DACREG_RMR); /* read 4 times RMR */ 1076 sst_dac_read(DACREG_RMR); 1077 sst_dac_read(DACREG_RMR); 1078 sst_dac_read(DACREG_RMR); 1079 /* cr0 */ 1080 switch(bpp) { 1081 case 16: 1082 sst_dac_write(DACREG_RMR, (cr0 & 0x0f) | DACREG_CR0_16BPP); 1083 break; 1084 default: 1085 dprintk("%s: bad depth '%u'\n", __func__, bpp); 1086 break; 1087 } 1088 } 1089 1090 static void sst_set_vidmod_ics(struct fb_info *info, const int bpp) 1091 { 1092 struct sstfb_par *par = info->par; 1093 1094 switch(bpp) { 1095 case 16: 1096 sst_dac_write(DACREG_ICS_CMD, DACREG_ICS_CMD_16BPP); 1097 break; 1098 default: 1099 dprintk("%s: bad depth '%u'\n", __func__, bpp); 1100 break; 1101 } 1102 } 1103 1104 /* 1105 * detect dac type 1106 * prerequisite : write to FbiInitx enabled, video and fbi and pci fifo reset, 1107 * dram refresh disabled, FbiInit remaped. 1108 * TODO: mmh.. maybe i should put the "prerequisite" in the func ... 1109 */ 1110 1111 1112 static struct dac_switch dacs[] = { 1113 { .name = "TI TVP3409", 1114 .detect = sst_detect_ti, 1115 .set_pll = sst_set_pll_att_ti, 1116 .set_vidmod = sst_set_vidmod_att_ti }, 1117 1118 { .name = "AT&T ATT20C409", 1119 .detect = sst_detect_att, 1120 .set_pll = sst_set_pll_att_ti, 1121 .set_vidmod = sst_set_vidmod_att_ti }, 1122 { .name = "ICS ICS5342", 1123 .detect = sst_detect_ics, 1124 .set_pll = sst_set_pll_ics, 1125 .set_vidmod = sst_set_vidmod_ics }, 1126 }; 1127 1128 static int sst_detect_dactype(struct fb_info *info, struct sstfb_par *par) 1129 { 1130 int i, ret = 0; 1131 1132 for (i = 0; i < ARRAY_SIZE(dacs); i++) { 1133 ret = dacs[i].detect(info); 1134 if (ret) 1135 break; 1136 } 1137 if (!ret) 1138 return 0; 1139 f_dprintk("%s found %s\n", __func__, dacs[i].name); 1140 par->dac_sw = dacs[i]; 1141 return 1; 1142 } 1143 1144 /* 1145 * Internal Routines 1146 */ 1147 static int sst_init(struct fb_info *info, struct sstfb_par *par) 1148 { 1149 u32 fbiinit0, fbiinit1, fbiinit4; 1150 struct pci_dev *dev = par->dev; 1151 struct pll_timing gfx_timings; 1152 struct sst_spec *spec; 1153 int Fout; 1154 int gfx_clock; 1155 1156 spec = &voodoo_spec[par->type]; 1157 f_ddprintk(" fbiinit0 fbiinit1 fbiinit2 fbiinit3 fbiinit4 " 1158 " fbiinit6\n"); 1159 f_ddprintk("%0#10x %0#10x %0#10x %0#10x %0#10x %0#10x\n", 1160 sst_read(FBIINIT0), sst_read(FBIINIT1), sst_read(FBIINIT2), 1161 sst_read(FBIINIT3), sst_read(FBIINIT4), sst_read(FBIINIT6)); 1162 /* disable video clock */ 1163 pci_write_config_dword(dev, PCI_VCLK_DISABLE, 0); 1164 1165 /* enable writing to init registers, disable pci fifo */ 1166 pci_write_config_dword(dev, PCI_INIT_ENABLE, PCI_EN_INIT_WR); 1167 /* reset video */ 1168 sst_set_bits(FBIINIT1, VIDEO_RESET); 1169 sst_wait_idle(); 1170 /* reset gfx + pci fifo */ 1171 sst_set_bits(FBIINIT0, FBI_RESET | FIFO_RESET); 1172 sst_wait_idle(); 1173 1174 /* unreset fifo */ 1175 /*sst_unset_bits(FBIINIT0, FIFO_RESET); 1176 sst_wait_idle();*/ 1177 /* unreset FBI */ 1178 /*sst_unset_bits(FBIINIT0, FBI_RESET); 1179 sst_wait_idle();*/ 1180 1181 /* disable dram refresh */ 1182 sst_unset_bits(FBIINIT2, EN_DRAM_REFRESH); 1183 sst_wait_idle(); 1184 /* remap fbinit2/3 to dac */ 1185 pci_write_config_dword(dev, PCI_INIT_ENABLE, 1186 PCI_EN_INIT_WR | PCI_REMAP_DAC ); 1187 /* detect dac type */ 1188 if (!sst_detect_dactype(info, par)) { 1189 printk(KERN_ERR "sstfb: unknown dac type.\n"); 1190 //FIXME watch it: we are not in a safe state, bad bad bad. 1191 return 0; 1192 } 1193 1194 /* set graphic clock */ 1195 gfx_clock = spec->default_gfx_clock; 1196 if ((gfxclk >10 ) && (gfxclk < spec->max_gfxclk)) { 1197 printk(KERN_INFO "sstfb: Using supplied graphic freq : %dMHz\n", gfxclk); 1198 gfx_clock = gfxclk *1000; 1199 } else if (gfxclk) { 1200 printk(KERN_WARNING "sstfb: %dMhz is way out of spec! Using default\n", gfxclk); 1201 } 1202 1203 sst_calc_pll(gfx_clock, &Fout, &gfx_timings); 1204 par->dac_sw.set_pll(info, &gfx_timings, GFX_CLOCK); 1205 1206 /* disable fbiinit remap */ 1207 pci_write_config_dword(dev, PCI_INIT_ENABLE, 1208 PCI_EN_INIT_WR| PCI_EN_FIFO_WR ); 1209 /* defaults init registers */ 1210 /* FbiInit0: unreset gfx, unreset fifo */ 1211 fbiinit0 = FBIINIT0_DEFAULT; 1212 fbiinit1 = FBIINIT1_DEFAULT; 1213 fbiinit4 = FBIINIT4_DEFAULT; 1214 par->vgapass = vgapass; 1215 if (par->vgapass) 1216 fbiinit0 &= ~DIS_VGA_PASSTHROUGH; 1217 else 1218 fbiinit0 |= DIS_VGA_PASSTHROUGH; 1219 if (slowpci) { 1220 fbiinit1 |= SLOW_PCI_WRITES; 1221 fbiinit4 |= SLOW_PCI_READS; 1222 } else { 1223 fbiinit1 &= ~SLOW_PCI_WRITES; 1224 fbiinit4 &= ~SLOW_PCI_READS; 1225 } 1226 sst_write(FBIINIT0, fbiinit0); 1227 sst_wait_idle(); 1228 sst_write(FBIINIT1, fbiinit1); 1229 sst_wait_idle(); 1230 sst_write(FBIINIT2, FBIINIT2_DEFAULT); 1231 sst_wait_idle(); 1232 sst_write(FBIINIT3, FBIINIT3_DEFAULT); 1233 sst_wait_idle(); 1234 sst_write(FBIINIT4, fbiinit4); 1235 sst_wait_idle(); 1236 if (IS_VOODOO2(par)) { 1237 sst_write(FBIINIT6, FBIINIT6_DEFAULT); 1238 sst_wait_idle(); 1239 } 1240 1241 pci_write_config_dword(dev, PCI_INIT_ENABLE, PCI_EN_FIFO_WR); 1242 pci_write_config_dword(dev, PCI_VCLK_ENABLE, 0); 1243 return 1; 1244 } 1245 1246 static void sst_shutdown(struct fb_info *info) 1247 { 1248 struct sstfb_par *par = info->par; 1249 struct pci_dev *dev = par->dev; 1250 struct pll_timing gfx_timings; 1251 int Fout; 1252 1253 /* reset video, gfx, fifo, disable dram + remap fbiinit2/3 */ 1254 pci_write_config_dword(dev, PCI_INIT_ENABLE, PCI_EN_INIT_WR); 1255 sst_set_bits(FBIINIT1, VIDEO_RESET | EN_BLANKING); 1256 sst_unset_bits(FBIINIT2, EN_DRAM_REFRESH); 1257 sst_set_bits(FBIINIT0, FBI_RESET | FIFO_RESET); 1258 sst_wait_idle(); 1259 pci_write_config_dword(dev, PCI_INIT_ENABLE, 1260 PCI_EN_INIT_WR | PCI_REMAP_DAC); 1261 /* set 20Mhz gfx clock */ 1262 sst_calc_pll(20000, &Fout, &gfx_timings); 1263 par->dac_sw.set_pll(info, &gfx_timings, GFX_CLOCK); 1264 /* TODO maybe shutdown the dac, vrefresh and so on... */ 1265 pci_write_config_dword(dev, PCI_INIT_ENABLE, 1266 PCI_EN_INIT_WR); 1267 sst_unset_bits(FBIINIT0, FBI_RESET | FIFO_RESET | DIS_VGA_PASSTHROUGH); 1268 pci_write_config_dword(dev, PCI_VCLK_DISABLE,0); 1269 /* maybe keep fbiinit* and PCI_INIT_enable in the fb_info struct 1270 * from start ? */ 1271 pci_write_config_dword(dev, PCI_INIT_ENABLE, 0); 1272 1273 } 1274 1275 /* 1276 * Interface to the world 1277 */ 1278 static int sstfb_setup(char *options) 1279 { 1280 char *this_opt; 1281 1282 if (!options || !*options) 1283 return 0; 1284 1285 while ((this_opt = strsep(&options, ",")) != NULL) { 1286 if (!*this_opt) continue; 1287 1288 f_ddprintk("option %s\n", this_opt); 1289 1290 if (!strcmp(this_opt, "vganopass")) 1291 vgapass = 0; 1292 else if (!strcmp(this_opt, "vgapass")) 1293 vgapass = 1; 1294 else if (!strcmp(this_opt, "clipping")) 1295 clipping = 1; 1296 else if (!strcmp(this_opt, "noclipping")) 1297 clipping = 0; 1298 else if (!strcmp(this_opt, "fastpci")) 1299 slowpci = 0; 1300 else if (!strcmp(this_opt, "slowpci")) 1301 slowpci = 1; 1302 else if (!strncmp(this_opt, "mem:",4)) 1303 mem = simple_strtoul (this_opt+4, NULL, 0); 1304 else if (!strncmp(this_opt, "gfxclk:",7)) 1305 gfxclk = simple_strtoul (this_opt+7, NULL, 0); 1306 else 1307 mode_option = this_opt; 1308 } 1309 return 0; 1310 } 1311 1312 1313 static const struct fb_ops sstfb_ops = { 1314 .owner = THIS_MODULE, 1315 FB_DEFAULT_IOMEM_OPS, 1316 .fb_check_var = sstfb_check_var, 1317 .fb_set_par = sstfb_set_par, 1318 .fb_setcolreg = sstfb_setcolreg, 1319 .fb_ioctl = sstfb_ioctl, 1320 }; 1321 1322 static int sstfb_probe(struct pci_dev *pdev, const struct pci_device_id *id) 1323 { 1324 struct fb_info *info; 1325 struct fb_fix_screeninfo *fix; 1326 struct sstfb_par *par; 1327 struct sst_spec *spec; 1328 int err; 1329 1330 err = aperture_remove_conflicting_pci_devices(pdev, "sstfb"); 1331 if (err) 1332 return err; 1333 1334 /* Enable device in PCI config. */ 1335 if ((err=pci_enable_device(pdev))) { 1336 printk(KERN_ERR "cannot enable device\n"); 1337 return err; 1338 } 1339 1340 /* Allocate the fb and par structures. */ 1341 info = framebuffer_alloc(sizeof(struct sstfb_par), &pdev->dev); 1342 if (!info) 1343 return -ENOMEM; 1344 1345 pci_set_drvdata(pdev, info); 1346 1347 par = info->par; 1348 fix = &info->fix; 1349 1350 par->type = id->driver_data; 1351 spec = &voodoo_spec[par->type]; 1352 f_ddprintk("found device : %s\n", spec->name); 1353 1354 par->dev = pdev; 1355 par->revision = pdev->revision; 1356 1357 fix->mmio_start = pci_resource_start(pdev,0); 1358 fix->mmio_len = 0x400000; 1359 fix->smem_start = fix->mmio_start + 0x400000; 1360 1361 if (!request_mem_region(fix->mmio_start, fix->mmio_len, "sstfb MMIO")) { 1362 printk(KERN_ERR "sstfb: cannot reserve mmio memory\n"); 1363 goto fail_mmio_mem; 1364 } 1365 1366 if (!request_mem_region(fix->smem_start, 0x400000,"sstfb FB")) { 1367 printk(KERN_ERR "sstfb: cannot reserve fb memory\n"); 1368 goto fail_fb_mem; 1369 } 1370 1371 par->mmio_vbase = ioremap(fix->mmio_start, 1372 fix->mmio_len); 1373 if (!par->mmio_vbase) { 1374 printk(KERN_ERR "sstfb: cannot remap register area %#lx\n", 1375 fix->mmio_start); 1376 goto fail_mmio_remap; 1377 } 1378 info->screen_base = ioremap(fix->smem_start, 0x400000); 1379 if (!info->screen_base) { 1380 printk(KERN_ERR "sstfb: cannot remap framebuffer %#lx\n", 1381 fix->smem_start); 1382 goto fail_fb_remap; 1383 } 1384 1385 if (!sst_init(info, par)) { 1386 printk(KERN_ERR "sstfb: Init failed\n"); 1387 goto fail; 1388 } 1389 sst_get_memsize(info, &fix->smem_len); 1390 strscpy(fix->id, spec->name, sizeof(fix->id)); 1391 1392 printk(KERN_INFO "%s (revision %d) with %s dac\n", 1393 fix->id, par->revision, par->dac_sw.name); 1394 printk(KERN_INFO "framebuffer at %#lx, mapped to 0x%p, size %dMB\n", 1395 fix->smem_start, info->screen_base, 1396 fix->smem_len >> 20); 1397 1398 f_ddprintk("regbase_virt: %p\n", par->mmio_vbase); 1399 f_ddprintk("membase_phys: %#lx\n", fix->smem_start); 1400 f_ddprintk("fbbase_virt: %p\n", info->screen_base); 1401 1402 info->fbops = &sstfb_ops; 1403 info->pseudo_palette = par->palette; 1404 1405 fix->type = FB_TYPE_PACKED_PIXELS; 1406 fix->visual = FB_VISUAL_TRUECOLOR; 1407 fix->accel = FB_ACCEL_NONE; /* FIXME */ 1408 /* 1409 * According to the specs, the linelength must be of 1024 *pixels* 1410 * and the 24bpp mode is in fact a 32 bpp mode (and both are in 1411 * fact dithered to 16bit). 1412 */ 1413 fix->line_length = 2048; /* default value, for 24 or 32bit: 4096 */ 1414 1415 fb_find_mode(&info->var, info, mode_option, NULL, 0, NULL, 16); 1416 1417 if (sstfb_check_var(&info->var, info)) { 1418 printk(KERN_ERR "sstfb: invalid video mode.\n"); 1419 goto fail; 1420 } 1421 1422 if (sstfb_set_par(info)) { 1423 printk(KERN_ERR "sstfb: can't set default video mode.\n"); 1424 goto fail; 1425 } 1426 1427 if (fb_alloc_cmap(&info->cmap, 256, 0)) { 1428 printk(KERN_ERR "sstfb: can't alloc cmap memory.\n"); 1429 goto fail; 1430 } 1431 1432 /* register fb */ 1433 info->device = &pdev->dev; 1434 if (register_framebuffer(info) < 0) { 1435 printk(KERN_ERR "sstfb: can't register framebuffer.\n"); 1436 goto fail_register; 1437 } 1438 1439 sstfb_clear_screen(info); 1440 1441 #ifdef CONFIG_FB_DEVICE 1442 if (device_create_file(info->dev, &device_attrs[0])) 1443 printk(KERN_WARNING "sstfb: can't create sysfs entry.\n"); 1444 #endif 1445 1446 fb_info(info, "%s frame buffer device at 0x%p\n", 1447 fix->id, info->screen_base); 1448 1449 return 0; 1450 1451 fail_register: 1452 fb_dealloc_cmap(&info->cmap); 1453 fail: 1454 iounmap(info->screen_base); 1455 fail_fb_remap: 1456 iounmap(par->mmio_vbase); 1457 fail_mmio_remap: 1458 release_mem_region(fix->smem_start, 0x400000); 1459 fail_fb_mem: 1460 release_mem_region(fix->mmio_start, info->fix.mmio_len); 1461 fail_mmio_mem: 1462 framebuffer_release(info); 1463 return -ENXIO; /* no voodoo detected */ 1464 } 1465 1466 static void sstfb_remove(struct pci_dev *pdev) 1467 { 1468 struct sstfb_par *par; 1469 struct fb_info *info; 1470 1471 info = pci_get_drvdata(pdev); 1472 par = info->par; 1473 1474 #ifdef CONFIG_FB_DEVICE 1475 device_remove_file(info->dev, &device_attrs[0]); 1476 #endif 1477 sst_shutdown(info); 1478 iounmap(info->screen_base); 1479 iounmap(par->mmio_vbase); 1480 release_mem_region(info->fix.smem_start, 0x400000); 1481 release_mem_region(info->fix.mmio_start, info->fix.mmio_len); 1482 fb_dealloc_cmap(&info->cmap); 1483 unregister_framebuffer(info); 1484 framebuffer_release(info); 1485 } 1486 1487 1488 static const struct pci_device_id sstfb_id_tbl[] = { 1489 { PCI_DEVICE(PCI_VENDOR_ID_3DFX, PCI_DEVICE_ID_3DFX_VOODOO ), 1490 .driver_data = ID_VOODOO1, }, 1491 { PCI_DEVICE(PCI_VENDOR_ID_3DFX, PCI_DEVICE_ID_3DFX_VOODOO2), 1492 .driver_data = ID_VOODOO2, }, 1493 { 0 }, 1494 }; 1495 1496 static struct pci_driver sstfb_driver = { 1497 .name = "sstfb", 1498 .id_table = sstfb_id_tbl, 1499 .probe = sstfb_probe, 1500 .remove = sstfb_remove, 1501 }; 1502 1503 1504 static int sstfb_init(void) 1505 { 1506 char *option = NULL; 1507 1508 if (fb_modesetting_disabled("sstfb")) 1509 return -ENODEV; 1510 1511 if (fb_get_options("sstfb", &option)) 1512 return -ENODEV; 1513 sstfb_setup(option); 1514 1515 return pci_register_driver(&sstfb_driver); 1516 } 1517 1518 static void sstfb_exit(void) 1519 { 1520 pci_unregister_driver(&sstfb_driver); 1521 } 1522 1523 1524 module_init(sstfb_init); 1525 module_exit(sstfb_exit); 1526 1527 MODULE_AUTHOR("(c) 2000,2002 Ghozlane Toumi <gtoumi@laposte.net>"); 1528 MODULE_DESCRIPTION("FBDev driver for 3dfx Voodoo Graphics and Voodoo2 based video boards"); 1529 MODULE_LICENSE("GPL"); 1530 1531 module_param(mem, int, 0); 1532 MODULE_PARM_DESC(mem, "Size of frame buffer memory in MB (1, 2, 4 MB, default=autodetect)"); 1533 module_param(vgapass, bool, 0); 1534 MODULE_PARM_DESC(vgapass, "Enable VGA PassThrough mode (0 or 1) (default=0)"); 1535 module_param(clipping, bool, 0); 1536 MODULE_PARM_DESC(clipping, "Enable clipping (slower, safer) (0 or 1) (default=1)"); 1537 module_param(gfxclk, int, 0); 1538 MODULE_PARM_DESC(gfxclk, "Force graphic chip frequency in MHz. DANGEROUS. (default=auto)"); 1539 module_param(slowpci, bool, 0); 1540 MODULE_PARM_DESC(slowpci, "Uses slow PCI settings (0 or 1) (default=0)"); 1541 module_param(mode_option, charp, 0); 1542 MODULE_PARM_DESC(mode_option, "Initial video mode (default=" DEFAULT_VIDEO_MODE ")"); 1543 1544