1 /* 2 * linux/drivers/video/tgafb.c -- DEC 21030 TGA frame buffer device 3 * 4 * Copyright (C) 1995 Jay Estabrook 5 * Copyright (C) 1997 Geert Uytterhoeven 6 * Copyright (C) 1999,2000 Martin Lucina, Tom Zerucha 7 * Copyright (C) 2002 Richard Henderson 8 * Copyright (C) 2006, 2007 Maciej W. Rozycki 9 * 10 * This file is subject to the terms and conditions of the GNU General Public 11 * License. See the file COPYING in the main directory of this archive for 12 * more details. 13 */ 14 15 #include <linux/bitrev.h> 16 #include <linux/compiler.h> 17 #include <linux/delay.h> 18 #include <linux/device.h> 19 #include <linux/errno.h> 20 #include <linux/fb.h> 21 #include <linux/init.h> 22 #include <linux/ioport.h> 23 #include <linux/kernel.h> 24 #include <linux/mm.h> 25 #include <linux/module.h> 26 #include <linux/pci.h> 27 #include <linux/selection.h> 28 #include <linux/string.h> 29 #include <linux/tc.h> 30 31 #include <asm/io.h> 32 33 #include <video/tgafb.h> 34 35 #ifdef CONFIG_TC 36 #define TGA_BUS_TC(dev) (dev->bus == &tc_bus_type) 37 #else 38 #define TGA_BUS_TC(dev) 0 39 #endif 40 41 /* 42 * Local functions. 43 */ 44 45 static int tgafb_check_var(struct fb_var_screeninfo *, struct fb_info *); 46 static int tgafb_set_par(struct fb_info *); 47 static void tgafb_set_pll(struct tga_par *, int); 48 static int tgafb_setcolreg(unsigned, unsigned, unsigned, unsigned, 49 unsigned, struct fb_info *); 50 static int tgafb_blank(int, struct fb_info *); 51 static void tgafb_init_fix(struct fb_info *); 52 53 static void tgafb_imageblit(struct fb_info *, const struct fb_image *); 54 static void tgafb_fillrect(struct fb_info *, const struct fb_fillrect *); 55 static void tgafb_copyarea(struct fb_info *, const struct fb_copyarea *); 56 static int tgafb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info); 57 58 static int tgafb_register(struct device *dev); 59 static void tgafb_unregister(struct device *dev); 60 61 static const char *mode_option; 62 static const char *mode_option_pci = "640x480@60"; 63 static const char *mode_option_tc = "1280x1024@72"; 64 65 66 static struct pci_driver tgafb_pci_driver; 67 static struct tc_driver tgafb_tc_driver; 68 69 /* 70 * Frame buffer operations 71 */ 72 73 static const struct fb_ops tgafb_ops = { 74 .owner = THIS_MODULE, 75 .fb_check_var = tgafb_check_var, 76 .fb_set_par = tgafb_set_par, 77 .fb_setcolreg = tgafb_setcolreg, 78 .fb_blank = tgafb_blank, 79 .fb_pan_display = tgafb_pan_display, 80 .fb_fillrect = tgafb_fillrect, 81 .fb_copyarea = tgafb_copyarea, 82 .fb_imageblit = tgafb_imageblit, 83 }; 84 85 86 #ifdef CONFIG_PCI 87 /* 88 * PCI registration operations 89 */ 90 static int tgafb_pci_register(struct pci_dev *, const struct pci_device_id *); 91 static void tgafb_pci_unregister(struct pci_dev *); 92 93 static struct pci_device_id const tgafb_pci_table[] = { 94 { PCI_DEVICE(PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_TGA) }, 95 { } 96 }; 97 MODULE_DEVICE_TABLE(pci, tgafb_pci_table); 98 99 static struct pci_driver tgafb_pci_driver = { 100 .name = "tgafb", 101 .id_table = tgafb_pci_table, 102 .probe = tgafb_pci_register, 103 .remove = tgafb_pci_unregister, 104 }; 105 106 static int tgafb_pci_register(struct pci_dev *pdev, 107 const struct pci_device_id *ent) 108 { 109 return tgafb_register(&pdev->dev); 110 } 111 112 static void tgafb_pci_unregister(struct pci_dev *pdev) 113 { 114 tgafb_unregister(&pdev->dev); 115 } 116 #endif /* CONFIG_PCI */ 117 118 #ifdef CONFIG_TC 119 /* 120 * TC registration operations 121 */ 122 static int tgafb_tc_register(struct device *); 123 static int tgafb_tc_unregister(struct device *); 124 125 static struct tc_device_id const tgafb_tc_table[] = { 126 { "DEC ", "PMAGD-AA" }, 127 { "DEC ", "PMAGD " }, 128 { } 129 }; 130 MODULE_DEVICE_TABLE(tc, tgafb_tc_table); 131 132 static struct tc_driver tgafb_tc_driver = { 133 .id_table = tgafb_tc_table, 134 .driver = { 135 .name = "tgafb", 136 .bus = &tc_bus_type, 137 .probe = tgafb_tc_register, 138 .remove = tgafb_tc_unregister, 139 }, 140 }; 141 142 static int tgafb_tc_register(struct device *dev) 143 { 144 int status = tgafb_register(dev); 145 if (!status) 146 get_device(dev); 147 return status; 148 } 149 150 static int tgafb_tc_unregister(struct device *dev) 151 { 152 put_device(dev); 153 tgafb_unregister(dev); 154 return 0; 155 } 156 #endif /* CONFIG_TC */ 157 158 159 /** 160 * tgafb_check_var - Optional function. Validates a var passed in. 161 * @var: frame buffer variable screen structure 162 * @info: frame buffer structure that represents a single frame buffer 163 */ 164 static int 165 tgafb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) 166 { 167 struct tga_par *par = (struct tga_par *)info->par; 168 169 if (par->tga_type == TGA_TYPE_8PLANE) { 170 if (var->bits_per_pixel != 8) 171 return -EINVAL; 172 } else { 173 if (var->bits_per_pixel != 32) 174 return -EINVAL; 175 } 176 var->red.length = var->green.length = var->blue.length = 8; 177 if (var->bits_per_pixel == 32) { 178 var->red.offset = 16; 179 var->green.offset = 8; 180 var->blue.offset = 0; 181 } 182 183 if (var->xres_virtual != var->xres || var->yres_virtual != var->yres) 184 return -EINVAL; 185 if (var->xres * var->yres * (var->bits_per_pixel >> 3) > info->fix.smem_len) 186 return -EINVAL; 187 if (var->nonstd) 188 return -EINVAL; 189 if (1000000000 / var->pixclock > TGA_PLL_MAX_FREQ) 190 return -EINVAL; 191 if ((var->vmode & FB_VMODE_MASK) != FB_VMODE_NONINTERLACED) 192 return -EINVAL; 193 194 /* Some of the acceleration routines assume the line width is 195 a multiple of 8 bytes. */ 196 if (var->xres * (par->tga_type == TGA_TYPE_8PLANE ? 1 : 4) % 8) 197 return -EINVAL; 198 199 return 0; 200 } 201 202 /** 203 * tgafb_set_par - Optional function. Alters the hardware state. 204 * @info: frame buffer structure that represents a single frame buffer 205 */ 206 static int 207 tgafb_set_par(struct fb_info *info) 208 { 209 static unsigned int const deep_presets[4] = { 210 0x00004000, 211 0x0000440d, 212 0xffffffff, 213 0x0000441d 214 }; 215 static unsigned int const rasterop_presets[4] = { 216 0x00000003, 217 0x00000303, 218 0xffffffff, 219 0x00000303 220 }; 221 static unsigned int const mode_presets[4] = { 222 0x00000000, 223 0x00000300, 224 0xffffffff, 225 0x00000300 226 }; 227 static unsigned int const base_addr_presets[4] = { 228 0x00000000, 229 0x00000001, 230 0xffffffff, 231 0x00000001 232 }; 233 234 struct tga_par *par = (struct tga_par *) info->par; 235 int tga_bus_pci = dev_is_pci(par->dev); 236 int tga_bus_tc = TGA_BUS_TC(par->dev); 237 u32 htimings, vtimings, pll_freq; 238 u8 tga_type; 239 int i; 240 241 /* Encode video timings. */ 242 htimings = (((info->var.xres/4) & TGA_HORIZ_ACT_LSB) 243 | (((info->var.xres/4) & 0x600 << 19) & TGA_HORIZ_ACT_MSB)); 244 vtimings = (info->var.yres & TGA_VERT_ACTIVE); 245 htimings |= ((info->var.right_margin/4) << 9) & TGA_HORIZ_FP; 246 vtimings |= (info->var.lower_margin << 11) & TGA_VERT_FP; 247 htimings |= ((info->var.hsync_len/4) << 14) & TGA_HORIZ_SYNC; 248 vtimings |= (info->var.vsync_len << 16) & TGA_VERT_SYNC; 249 htimings |= ((info->var.left_margin/4) << 21) & TGA_HORIZ_BP; 250 vtimings |= (info->var.upper_margin << 22) & TGA_VERT_BP; 251 252 if (info->var.sync & FB_SYNC_HOR_HIGH_ACT) 253 htimings |= TGA_HORIZ_POLARITY; 254 if (info->var.sync & FB_SYNC_VERT_HIGH_ACT) 255 vtimings |= TGA_VERT_POLARITY; 256 257 par->htimings = htimings; 258 par->vtimings = vtimings; 259 260 par->sync_on_green = !!(info->var.sync & FB_SYNC_ON_GREEN); 261 262 /* Store other useful values in par. */ 263 par->xres = info->var.xres; 264 par->yres = info->var.yres; 265 par->pll_freq = pll_freq = 1000000000 / info->var.pixclock; 266 par->bits_per_pixel = info->var.bits_per_pixel; 267 info->fix.line_length = par->xres * (par->bits_per_pixel >> 3); 268 269 tga_type = par->tga_type; 270 271 /* First, disable video. */ 272 TGA_WRITE_REG(par, TGA_VALID_VIDEO | TGA_VALID_BLANK, TGA_VALID_REG); 273 274 /* Write the DEEP register. */ 275 while (TGA_READ_REG(par, TGA_CMD_STAT_REG) & 1) /* wait for not busy */ 276 continue; 277 mb(); 278 TGA_WRITE_REG(par, deep_presets[tga_type] | 279 (par->sync_on_green ? 0x0 : 0x00010000), 280 TGA_DEEP_REG); 281 while (TGA_READ_REG(par, TGA_CMD_STAT_REG) & 1) /* wait for not busy */ 282 continue; 283 mb(); 284 285 /* Write some more registers. */ 286 TGA_WRITE_REG(par, rasterop_presets[tga_type], TGA_RASTEROP_REG); 287 TGA_WRITE_REG(par, mode_presets[tga_type], TGA_MODE_REG); 288 TGA_WRITE_REG(par, base_addr_presets[tga_type], TGA_BASE_ADDR_REG); 289 290 /* Calculate & write the PLL. */ 291 tgafb_set_pll(par, pll_freq); 292 293 /* Write some more registers. */ 294 TGA_WRITE_REG(par, 0xffffffff, TGA_PLANEMASK_REG); 295 TGA_WRITE_REG(par, 0xffffffff, TGA_PIXELMASK_REG); 296 297 /* Init video timing regs. */ 298 TGA_WRITE_REG(par, htimings, TGA_HORIZ_REG); 299 TGA_WRITE_REG(par, vtimings, TGA_VERT_REG); 300 301 /* Initialise RAMDAC. */ 302 if (tga_type == TGA_TYPE_8PLANE && tga_bus_pci) { 303 304 /* Init BT485 RAMDAC registers. */ 305 BT485_WRITE(par, 0xa2 | (par->sync_on_green ? 0x8 : 0x0), 306 BT485_CMD_0); 307 BT485_WRITE(par, 0x01, BT485_ADDR_PAL_WRITE); 308 BT485_WRITE(par, 0x14, BT485_CMD_3); /* cursor 64x64 */ 309 BT485_WRITE(par, 0x40, BT485_CMD_1); 310 BT485_WRITE(par, 0x20, BT485_CMD_2); /* cursor off, for now */ 311 BT485_WRITE(par, 0xff, BT485_PIXEL_MASK); 312 313 /* Fill palette registers. */ 314 BT485_WRITE(par, 0x00, BT485_ADDR_PAL_WRITE); 315 TGA_WRITE_REG(par, BT485_DATA_PAL, TGA_RAMDAC_SETUP_REG); 316 317 for (i = 0; i < 256 * 3; i += 4) { 318 TGA_WRITE_REG(par, 0x55 | (BT485_DATA_PAL << 8), 319 TGA_RAMDAC_REG); 320 TGA_WRITE_REG(par, 0x00 | (BT485_DATA_PAL << 8), 321 TGA_RAMDAC_REG); 322 TGA_WRITE_REG(par, 0x00 | (BT485_DATA_PAL << 8), 323 TGA_RAMDAC_REG); 324 TGA_WRITE_REG(par, 0x00 | (BT485_DATA_PAL << 8), 325 TGA_RAMDAC_REG); 326 } 327 328 } else if (tga_type == TGA_TYPE_8PLANE && tga_bus_tc) { 329 330 /* Init BT459 RAMDAC registers. */ 331 BT459_WRITE(par, BT459_REG_ACC, BT459_CMD_REG_0, 0x40); 332 BT459_WRITE(par, BT459_REG_ACC, BT459_CMD_REG_1, 0x00); 333 BT459_WRITE(par, BT459_REG_ACC, BT459_CMD_REG_2, 334 (par->sync_on_green ? 0xc0 : 0x40)); 335 336 BT459_WRITE(par, BT459_REG_ACC, BT459_CUR_CMD_REG, 0x00); 337 338 /* Fill the palette. */ 339 BT459_LOAD_ADDR(par, 0x0000); 340 TGA_WRITE_REG(par, BT459_PALETTE << 2, TGA_RAMDAC_SETUP_REG); 341 342 for (i = 0; i < 256 * 3; i += 4) { 343 TGA_WRITE_REG(par, 0x55, TGA_RAMDAC_REG); 344 TGA_WRITE_REG(par, 0x00, TGA_RAMDAC_REG); 345 TGA_WRITE_REG(par, 0x00, TGA_RAMDAC_REG); 346 TGA_WRITE_REG(par, 0x00, TGA_RAMDAC_REG); 347 } 348 349 } else { /* 24-plane or 24plusZ */ 350 351 /* Init BT463 RAMDAC registers. */ 352 BT463_WRITE(par, BT463_REG_ACC, BT463_CMD_REG_0, 0x40); 353 BT463_WRITE(par, BT463_REG_ACC, BT463_CMD_REG_1, 0x08); 354 BT463_WRITE(par, BT463_REG_ACC, BT463_CMD_REG_2, 355 (par->sync_on_green ? 0xc0 : 0x40)); 356 357 BT463_WRITE(par, BT463_REG_ACC, BT463_READ_MASK_0, 0xff); 358 BT463_WRITE(par, BT463_REG_ACC, BT463_READ_MASK_1, 0xff); 359 BT463_WRITE(par, BT463_REG_ACC, BT463_READ_MASK_2, 0xff); 360 BT463_WRITE(par, BT463_REG_ACC, BT463_READ_MASK_3, 0x0f); 361 362 BT463_WRITE(par, BT463_REG_ACC, BT463_BLINK_MASK_0, 0x00); 363 BT463_WRITE(par, BT463_REG_ACC, BT463_BLINK_MASK_1, 0x00); 364 BT463_WRITE(par, BT463_REG_ACC, BT463_BLINK_MASK_2, 0x00); 365 BT463_WRITE(par, BT463_REG_ACC, BT463_BLINK_MASK_3, 0x00); 366 367 /* Fill the palette. */ 368 BT463_LOAD_ADDR(par, 0x0000); 369 TGA_WRITE_REG(par, BT463_PALETTE << 2, TGA_RAMDAC_SETUP_REG); 370 371 #ifdef CONFIG_HW_CONSOLE 372 for (i = 0; i < 16; i++) { 373 int j = color_table[i]; 374 375 TGA_WRITE_REG(par, default_red[j], TGA_RAMDAC_REG); 376 TGA_WRITE_REG(par, default_grn[j], TGA_RAMDAC_REG); 377 TGA_WRITE_REG(par, default_blu[j], TGA_RAMDAC_REG); 378 } 379 for (i = 0; i < 512 * 3; i += 4) { 380 #else 381 for (i = 0; i < 528 * 3; i += 4) { 382 #endif 383 TGA_WRITE_REG(par, 0x55, TGA_RAMDAC_REG); 384 TGA_WRITE_REG(par, 0x00, TGA_RAMDAC_REG); 385 TGA_WRITE_REG(par, 0x00, TGA_RAMDAC_REG); 386 TGA_WRITE_REG(par, 0x00, TGA_RAMDAC_REG); 387 } 388 389 /* Fill window type table after start of vertical retrace. */ 390 while (!(TGA_READ_REG(par, TGA_INTR_STAT_REG) & 0x01)) 391 continue; 392 TGA_WRITE_REG(par, 0x01, TGA_INTR_STAT_REG); 393 mb(); 394 while (!(TGA_READ_REG(par, TGA_INTR_STAT_REG) & 0x01)) 395 continue; 396 TGA_WRITE_REG(par, 0x01, TGA_INTR_STAT_REG); 397 398 BT463_LOAD_ADDR(par, BT463_WINDOW_TYPE_BASE); 399 TGA_WRITE_REG(par, BT463_REG_ACC << 2, TGA_RAMDAC_SETUP_REG); 400 401 for (i = 0; i < 16; i++) { 402 TGA_WRITE_REG(par, 0x00, TGA_RAMDAC_REG); 403 TGA_WRITE_REG(par, 0x01, TGA_RAMDAC_REG); 404 TGA_WRITE_REG(par, 0x00, TGA_RAMDAC_REG); 405 } 406 407 } 408 409 /* Finally, enable video scan (and pray for the monitor... :-) */ 410 TGA_WRITE_REG(par, TGA_VALID_VIDEO, TGA_VALID_REG); 411 412 return 0; 413 } 414 415 #define DIFFCHECK(X) \ 416 do { \ 417 if (m <= 0x3f) { \ 418 int delta = f - (TGA_PLL_BASE_FREQ * (X)) / (r << shift); \ 419 if (delta < 0) \ 420 delta = -delta; \ 421 if (delta < min_diff) \ 422 min_diff = delta, vm = m, va = a, vr = r; \ 423 } \ 424 } while (0) 425 426 static void 427 tgafb_set_pll(struct tga_par *par, int f) 428 { 429 int n, shift, base, min_diff, target; 430 int r,a,m,vm = 34, va = 1, vr = 30; 431 432 for (r = 0 ; r < 12 ; r++) 433 TGA_WRITE_REG(par, !r, TGA_CLOCK_REG); 434 435 if (f > TGA_PLL_MAX_FREQ) 436 f = TGA_PLL_MAX_FREQ; 437 438 if (f >= TGA_PLL_MAX_FREQ / 2) 439 shift = 0; 440 else if (f >= TGA_PLL_MAX_FREQ / 4) 441 shift = 1; 442 else 443 shift = 2; 444 445 TGA_WRITE_REG(par, shift & 1, TGA_CLOCK_REG); 446 TGA_WRITE_REG(par, shift >> 1, TGA_CLOCK_REG); 447 448 for (r = 0 ; r < 10 ; r++) 449 TGA_WRITE_REG(par, 0, TGA_CLOCK_REG); 450 451 if (f <= 120000) { 452 TGA_WRITE_REG(par, 0, TGA_CLOCK_REG); 453 TGA_WRITE_REG(par, 0, TGA_CLOCK_REG); 454 } 455 else if (f <= 200000) { 456 TGA_WRITE_REG(par, 1, TGA_CLOCK_REG); 457 TGA_WRITE_REG(par, 0, TGA_CLOCK_REG); 458 } 459 else { 460 TGA_WRITE_REG(par, 0, TGA_CLOCK_REG); 461 TGA_WRITE_REG(par, 1, TGA_CLOCK_REG); 462 } 463 464 TGA_WRITE_REG(par, 1, TGA_CLOCK_REG); 465 TGA_WRITE_REG(par, 0, TGA_CLOCK_REG); 466 TGA_WRITE_REG(par, 0, TGA_CLOCK_REG); 467 TGA_WRITE_REG(par, 1, TGA_CLOCK_REG); 468 TGA_WRITE_REG(par, 0, TGA_CLOCK_REG); 469 TGA_WRITE_REG(par, 1, TGA_CLOCK_REG); 470 471 target = (f << shift) / TGA_PLL_BASE_FREQ; 472 min_diff = TGA_PLL_MAX_FREQ; 473 474 r = 7 / target; 475 if (!r) r = 1; 476 477 base = target * r; 478 while (base < 449) { 479 for (n = base < 7 ? 7 : base; n < base + target && n < 449; n++) { 480 m = ((n + 3) / 7) - 1; 481 a = 0; 482 DIFFCHECK((m + 1) * 7); 483 m++; 484 DIFFCHECK((m + 1) * 7); 485 m = (n / 6) - 1; 486 if ((a = n % 6)) 487 DIFFCHECK(n); 488 } 489 r++; 490 base += target; 491 } 492 493 vr--; 494 495 for (r = 0; r < 8; r++) 496 TGA_WRITE_REG(par, (vm >> r) & 1, TGA_CLOCK_REG); 497 for (r = 0; r < 8 ; r++) 498 TGA_WRITE_REG(par, (va >> r) & 1, TGA_CLOCK_REG); 499 for (r = 0; r < 7 ; r++) 500 TGA_WRITE_REG(par, (vr >> r) & 1, TGA_CLOCK_REG); 501 TGA_WRITE_REG(par, ((vr >> 7) & 1)|2, TGA_CLOCK_REG); 502 } 503 504 505 /** 506 * tgafb_setcolreg - Optional function. Sets a color register. 507 * @regno: boolean, 0 copy local, 1 get_user() function 508 * @red: frame buffer colormap structure 509 * @green: The green value which can be up to 16 bits wide 510 * @blue: The blue value which can be up to 16 bits wide. 511 * @transp: If supported the alpha value which can be up to 16 bits wide. 512 * @info: frame buffer info structure 513 */ 514 static int 515 tgafb_setcolreg(unsigned regno, unsigned red, unsigned green, unsigned blue, 516 unsigned transp, struct fb_info *info) 517 { 518 struct tga_par *par = (struct tga_par *) info->par; 519 int tga_bus_pci = dev_is_pci(par->dev); 520 int tga_bus_tc = TGA_BUS_TC(par->dev); 521 522 if (regno > 255) 523 return 1; 524 red >>= 8; 525 green >>= 8; 526 blue >>= 8; 527 528 if (par->tga_type == TGA_TYPE_8PLANE && tga_bus_pci) { 529 BT485_WRITE(par, regno, BT485_ADDR_PAL_WRITE); 530 TGA_WRITE_REG(par, BT485_DATA_PAL, TGA_RAMDAC_SETUP_REG); 531 TGA_WRITE_REG(par, red|(BT485_DATA_PAL<<8),TGA_RAMDAC_REG); 532 TGA_WRITE_REG(par, green|(BT485_DATA_PAL<<8),TGA_RAMDAC_REG); 533 TGA_WRITE_REG(par, blue|(BT485_DATA_PAL<<8),TGA_RAMDAC_REG); 534 } else if (par->tga_type == TGA_TYPE_8PLANE && tga_bus_tc) { 535 BT459_LOAD_ADDR(par, regno); 536 TGA_WRITE_REG(par, BT459_PALETTE << 2, TGA_RAMDAC_SETUP_REG); 537 TGA_WRITE_REG(par, red, TGA_RAMDAC_REG); 538 TGA_WRITE_REG(par, green, TGA_RAMDAC_REG); 539 TGA_WRITE_REG(par, blue, TGA_RAMDAC_REG); 540 } else { 541 if (regno < 16) { 542 u32 value = (regno << 16) | (regno << 8) | regno; 543 ((u32 *)info->pseudo_palette)[regno] = value; 544 } 545 BT463_LOAD_ADDR(par, regno); 546 TGA_WRITE_REG(par, BT463_PALETTE << 2, TGA_RAMDAC_SETUP_REG); 547 TGA_WRITE_REG(par, red, TGA_RAMDAC_REG); 548 TGA_WRITE_REG(par, green, TGA_RAMDAC_REG); 549 TGA_WRITE_REG(par, blue, TGA_RAMDAC_REG); 550 } 551 552 return 0; 553 } 554 555 556 /** 557 * tgafb_blank - Optional function. Blanks the display. 558 * @blank: the blank mode we want. 559 * @info: frame buffer structure that represents a single frame buffer 560 */ 561 static int 562 tgafb_blank(int blank, struct fb_info *info) 563 { 564 struct tga_par *par = (struct tga_par *) info->par; 565 u32 vhcr, vvcr, vvvr; 566 unsigned long flags; 567 568 local_irq_save(flags); 569 570 vhcr = TGA_READ_REG(par, TGA_HORIZ_REG); 571 vvcr = TGA_READ_REG(par, TGA_VERT_REG); 572 vvvr = TGA_READ_REG(par, TGA_VALID_REG); 573 vvvr &= ~(TGA_VALID_VIDEO | TGA_VALID_BLANK); 574 575 switch (blank) { 576 case FB_BLANK_UNBLANK: /* Unblanking */ 577 if (par->vesa_blanked) { 578 TGA_WRITE_REG(par, vhcr & 0xbfffffff, TGA_HORIZ_REG); 579 TGA_WRITE_REG(par, vvcr & 0xbfffffff, TGA_VERT_REG); 580 par->vesa_blanked = 0; 581 } 582 TGA_WRITE_REG(par, vvvr | TGA_VALID_VIDEO, TGA_VALID_REG); 583 break; 584 585 case FB_BLANK_NORMAL: /* Normal blanking */ 586 TGA_WRITE_REG(par, vvvr | TGA_VALID_VIDEO | TGA_VALID_BLANK, 587 TGA_VALID_REG); 588 break; 589 590 case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */ 591 TGA_WRITE_REG(par, vvcr | 0x40000000, TGA_VERT_REG); 592 TGA_WRITE_REG(par, vvvr | TGA_VALID_BLANK, TGA_VALID_REG); 593 par->vesa_blanked = 1; 594 break; 595 596 case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */ 597 TGA_WRITE_REG(par, vhcr | 0x40000000, TGA_HORIZ_REG); 598 TGA_WRITE_REG(par, vvvr | TGA_VALID_BLANK, TGA_VALID_REG); 599 par->vesa_blanked = 1; 600 break; 601 602 case FB_BLANK_POWERDOWN: /* Poweroff */ 603 TGA_WRITE_REG(par, vhcr | 0x40000000, TGA_HORIZ_REG); 604 TGA_WRITE_REG(par, vvcr | 0x40000000, TGA_VERT_REG); 605 TGA_WRITE_REG(par, vvvr | TGA_VALID_BLANK, TGA_VALID_REG); 606 par->vesa_blanked = 1; 607 break; 608 } 609 610 local_irq_restore(flags); 611 return 0; 612 } 613 614 615 /* 616 * Acceleration. 617 */ 618 619 static void 620 tgafb_mono_imageblit(struct fb_info *info, const struct fb_image *image) 621 { 622 struct tga_par *par = (struct tga_par *) info->par; 623 u32 fgcolor, bgcolor, dx, dy, width, height, vxres, vyres, pixelmask; 624 unsigned long rincr, line_length, shift, pos, is8bpp; 625 unsigned long i, j; 626 const unsigned char *data; 627 void __iomem *regs_base; 628 void __iomem *fb_base; 629 630 is8bpp = info->var.bits_per_pixel == 8; 631 632 dx = image->dx; 633 dy = image->dy; 634 width = image->width; 635 height = image->height; 636 vxres = info->var.xres_virtual; 637 vyres = info->var.yres_virtual; 638 line_length = info->fix.line_length; 639 rincr = (width + 7) / 8; 640 641 /* A shift below cannot cope with. */ 642 if (unlikely(width == 0)) 643 return; 644 /* Crop the image to the screen. */ 645 if (dx > vxres || dy > vyres) 646 return; 647 if (dx + width > vxres) 648 width = vxres - dx; 649 if (dy + height > vyres) 650 height = vyres - dy; 651 652 regs_base = par->tga_regs_base; 653 fb_base = par->tga_fb_base; 654 655 /* Expand the color values to fill 32-bits. */ 656 /* ??? Would be nice to notice colour changes elsewhere, so 657 that we can do this only when necessary. */ 658 fgcolor = image->fg_color; 659 bgcolor = image->bg_color; 660 if (is8bpp) { 661 fgcolor |= fgcolor << 8; 662 fgcolor |= fgcolor << 16; 663 bgcolor |= bgcolor << 8; 664 bgcolor |= bgcolor << 16; 665 } else { 666 if (fgcolor < 16) 667 fgcolor = ((u32 *)info->pseudo_palette)[fgcolor]; 668 if (bgcolor < 16) 669 bgcolor = ((u32 *)info->pseudo_palette)[bgcolor]; 670 } 671 __raw_writel(fgcolor, regs_base + TGA_FOREGROUND_REG); 672 __raw_writel(bgcolor, regs_base + TGA_BACKGROUND_REG); 673 674 /* Acquire proper alignment; set up the PIXELMASK register 675 so that we only write the proper character cell. */ 676 pos = dy * line_length; 677 if (is8bpp) { 678 pos += dx; 679 shift = pos & 3; 680 pos &= -4; 681 } else { 682 pos += dx * 4; 683 shift = (pos & 7) >> 2; 684 pos &= -8; 685 } 686 687 data = (const unsigned char *) image->data; 688 689 /* Enable opaque stipple mode. */ 690 __raw_writel((is8bpp 691 ? TGA_MODE_SBM_8BPP | TGA_MODE_OPAQUE_STIPPLE 692 : TGA_MODE_SBM_24BPP | TGA_MODE_OPAQUE_STIPPLE), 693 regs_base + TGA_MODE_REG); 694 695 if (width + shift <= 32) { 696 unsigned long bwidth; 697 698 /* Handle common case of imaging a single character, in 699 a font less than or 32 pixels wide. */ 700 701 /* Avoid a shift by 32; width > 0 implied. */ 702 pixelmask = (2ul << (width - 1)) - 1; 703 pixelmask <<= shift; 704 __raw_writel(pixelmask, regs_base + TGA_PIXELMASK_REG); 705 wmb(); 706 707 bwidth = (width + 7) / 8; 708 709 for (i = 0; i < height; ++i) { 710 u32 mask = 0; 711 712 /* The image data is bit big endian; we need 713 little endian. */ 714 for (j = 0; j < bwidth; ++j) 715 mask |= bitrev8(data[j]) << (j * 8); 716 717 __raw_writel(mask << shift, fb_base + pos); 718 719 pos += line_length; 720 data += rincr; 721 } 722 wmb(); 723 __raw_writel(0xffffffff, regs_base + TGA_PIXELMASK_REG); 724 } else if (shift == 0) { 725 unsigned long pos0 = pos; 726 const unsigned char *data0 = data; 727 unsigned long bincr = (is8bpp ? 8 : 8*4); 728 unsigned long bwidth; 729 730 /* Handle another common case in which accel_putcs 731 generates a large bitmap, which happens to be aligned. 732 Allow the tail to be misaligned. This case is 733 interesting because we've not got to hold partial 734 bytes across the words being written. */ 735 736 wmb(); 737 738 bwidth = (width / 8) & -4; 739 for (i = 0; i < height; ++i) { 740 for (j = 0; j < bwidth; j += 4) { 741 u32 mask = 0; 742 mask |= bitrev8(data[j+0]) << (0 * 8); 743 mask |= bitrev8(data[j+1]) << (1 * 8); 744 mask |= bitrev8(data[j+2]) << (2 * 8); 745 mask |= bitrev8(data[j+3]) << (3 * 8); 746 __raw_writel(mask, fb_base + pos + j*bincr); 747 } 748 pos += line_length; 749 data += rincr; 750 } 751 wmb(); 752 753 pixelmask = (1ul << (width & 31)) - 1; 754 if (pixelmask) { 755 __raw_writel(pixelmask, regs_base + TGA_PIXELMASK_REG); 756 wmb(); 757 758 pos = pos0 + bwidth*bincr; 759 data = data0 + bwidth; 760 bwidth = ((width & 31) + 7) / 8; 761 762 for (i = 0; i < height; ++i) { 763 u32 mask = 0; 764 for (j = 0; j < bwidth; ++j) 765 mask |= bitrev8(data[j]) << (j * 8); 766 __raw_writel(mask, fb_base + pos); 767 pos += line_length; 768 data += rincr; 769 } 770 wmb(); 771 __raw_writel(0xffffffff, regs_base + TGA_PIXELMASK_REG); 772 } 773 } else { 774 unsigned long pos0 = pos; 775 const unsigned char *data0 = data; 776 unsigned long bincr = (is8bpp ? 8 : 8*4); 777 unsigned long bwidth; 778 779 /* Finally, handle the generic case of misaligned start. 780 Here we split the write into 16-bit spans. This allows 781 us to use only one pixel mask, instead of four as would 782 be required by writing 24-bit spans. */ 783 784 pixelmask = 0xffff << shift; 785 __raw_writel(pixelmask, regs_base + TGA_PIXELMASK_REG); 786 wmb(); 787 788 bwidth = (width / 8) & -2; 789 for (i = 0; i < height; ++i) { 790 for (j = 0; j < bwidth; j += 2) { 791 u32 mask = 0; 792 mask |= bitrev8(data[j+0]) << (0 * 8); 793 mask |= bitrev8(data[j+1]) << (1 * 8); 794 mask <<= shift; 795 __raw_writel(mask, fb_base + pos + j*bincr); 796 } 797 pos += line_length; 798 data += rincr; 799 } 800 wmb(); 801 802 pixelmask = ((1ul << (width & 15)) - 1) << shift; 803 if (pixelmask) { 804 __raw_writel(pixelmask, regs_base + TGA_PIXELMASK_REG); 805 wmb(); 806 807 pos = pos0 + bwidth*bincr; 808 data = data0 + bwidth; 809 bwidth = (width & 15) > 8; 810 811 for (i = 0; i < height; ++i) { 812 u32 mask = bitrev8(data[0]); 813 if (bwidth) 814 mask |= bitrev8(data[1]) << 8; 815 mask <<= shift; 816 __raw_writel(mask, fb_base + pos); 817 pos += line_length; 818 data += rincr; 819 } 820 wmb(); 821 } 822 __raw_writel(0xffffffff, regs_base + TGA_PIXELMASK_REG); 823 } 824 825 /* Disable opaque stipple mode. */ 826 __raw_writel((is8bpp 827 ? TGA_MODE_SBM_8BPP | TGA_MODE_SIMPLE 828 : TGA_MODE_SBM_24BPP | TGA_MODE_SIMPLE), 829 regs_base + TGA_MODE_REG); 830 } 831 832 static void 833 tgafb_clut_imageblit(struct fb_info *info, const struct fb_image *image) 834 { 835 struct tga_par *par = (struct tga_par *) info->par; 836 u32 color, dx, dy, width, height, vxres, vyres; 837 u32 *palette = ((u32 *)info->pseudo_palette); 838 unsigned long pos, line_length, i, j; 839 const unsigned char *data; 840 void __iomem *fb_base; 841 842 dx = image->dx; 843 dy = image->dy; 844 width = image->width; 845 height = image->height; 846 vxres = info->var.xres_virtual; 847 vyres = info->var.yres_virtual; 848 line_length = info->fix.line_length; 849 850 /* Crop the image to the screen. */ 851 if (dx > vxres || dy > vyres) 852 return; 853 if (dx + width > vxres) 854 width = vxres - dx; 855 if (dy + height > vyres) 856 height = vyres - dy; 857 858 fb_base = par->tga_fb_base; 859 860 pos = dy * line_length + (dx * 4); 861 data = image->data; 862 863 /* Now copy the image, color_expanding via the palette. */ 864 for (i = 0; i < height; i++) { 865 for (j = 0; j < width; j++) { 866 color = palette[*data++]; 867 __raw_writel(color, fb_base + pos + j*4); 868 } 869 pos += line_length; 870 } 871 } 872 873 /** 874 * tgafb_imageblit - REQUIRED function. Can use generic routines if 875 * non acclerated hardware and packed pixel based. 876 * Copies a image from system memory to the screen. 877 * 878 * @info: frame buffer structure that represents a single frame buffer 879 * @image: structure defining the image. 880 */ 881 static void 882 tgafb_imageblit(struct fb_info *info, const struct fb_image *image) 883 { 884 unsigned int is8bpp = info->var.bits_per_pixel == 8; 885 886 /* If a mono image, regardless of FB depth, go do it. */ 887 if (image->depth == 1) { 888 tgafb_mono_imageblit(info, image); 889 return; 890 } 891 892 /* For copies that aren't pixel expansion, there's little we 893 can do better than the generic code. */ 894 /* ??? There is a DMA write mode; I wonder if that could be 895 made to pull the data from the image buffer... */ 896 if (image->depth == info->var.bits_per_pixel) { 897 cfb_imageblit(info, image); 898 return; 899 } 900 901 /* If 24-plane FB and the image is 8-plane with CLUT, we can do it. */ 902 if (!is8bpp && image->depth == 8) { 903 tgafb_clut_imageblit(info, image); 904 return; 905 } 906 907 /* Silently return... */ 908 } 909 910 /** 911 * tgafb_fillrect - REQUIRED function. Can use generic routines if 912 * non acclerated hardware and packed pixel based. 913 * Draws a rectangle on the screen. 914 * 915 * @info: frame buffer structure that represents a single frame buffer 916 * @rect: structure defining the rectagle and operation. 917 */ 918 static void 919 tgafb_fillrect(struct fb_info *info, const struct fb_fillrect *rect) 920 { 921 struct tga_par *par = (struct tga_par *) info->par; 922 int is8bpp = info->var.bits_per_pixel == 8; 923 u32 dx, dy, width, height, vxres, vyres, color; 924 unsigned long pos, align, line_length, i, j; 925 void __iomem *regs_base; 926 void __iomem *fb_base; 927 928 dx = rect->dx; 929 dy = rect->dy; 930 width = rect->width; 931 height = rect->height; 932 vxres = info->var.xres_virtual; 933 vyres = info->var.yres_virtual; 934 line_length = info->fix.line_length; 935 regs_base = par->tga_regs_base; 936 fb_base = par->tga_fb_base; 937 938 /* Crop the rectangle to the screen. */ 939 if (dx > vxres || dy > vyres || !width || !height) 940 return; 941 if (dx + width > vxres) 942 width = vxres - dx; 943 if (dy + height > vyres) 944 height = vyres - dy; 945 946 pos = dy * line_length + dx * (is8bpp ? 1 : 4); 947 948 /* ??? We could implement ROP_XOR with opaque fill mode 949 and a RasterOp setting of GXxor, but as far as I can 950 tell, this mode is not actually used in the kernel. 951 Thus I am ignoring it for now. */ 952 if (rect->rop != ROP_COPY) { 953 cfb_fillrect(info, rect); 954 return; 955 } 956 957 /* Expand the color value to fill 8 pixels. */ 958 color = rect->color; 959 if (is8bpp) { 960 color |= color << 8; 961 color |= color << 16; 962 __raw_writel(color, regs_base + TGA_BLOCK_COLOR0_REG); 963 __raw_writel(color, regs_base + TGA_BLOCK_COLOR1_REG); 964 } else { 965 if (color < 16) 966 color = ((u32 *)info->pseudo_palette)[color]; 967 __raw_writel(color, regs_base + TGA_BLOCK_COLOR0_REG); 968 __raw_writel(color, regs_base + TGA_BLOCK_COLOR1_REG); 969 __raw_writel(color, regs_base + TGA_BLOCK_COLOR2_REG); 970 __raw_writel(color, regs_base + TGA_BLOCK_COLOR3_REG); 971 __raw_writel(color, regs_base + TGA_BLOCK_COLOR4_REG); 972 __raw_writel(color, regs_base + TGA_BLOCK_COLOR5_REG); 973 __raw_writel(color, regs_base + TGA_BLOCK_COLOR6_REG); 974 __raw_writel(color, regs_base + TGA_BLOCK_COLOR7_REG); 975 } 976 977 /* The DATA register holds the fill mask for block fill mode. 978 Since we're not stippling, this is all ones. */ 979 __raw_writel(0xffffffff, regs_base + TGA_DATA_REG); 980 981 /* Enable block fill mode. */ 982 __raw_writel((is8bpp 983 ? TGA_MODE_SBM_8BPP | TGA_MODE_BLOCK_FILL 984 : TGA_MODE_SBM_24BPP | TGA_MODE_BLOCK_FILL), 985 regs_base + TGA_MODE_REG); 986 wmb(); 987 988 /* We can fill 2k pixels per operation. Notice blocks that fit 989 the width of the screen so that we can take advantage of this 990 and fill more than one line per write. */ 991 if (width == line_length) { 992 width *= height; 993 height = 1; 994 } 995 996 /* The write into the frame buffer must be aligned to 4 bytes, 997 but we are allowed to encode the offset within the word in 998 the data word written. */ 999 align = (pos & 3) << 16; 1000 pos &= -4; 1001 1002 if (width <= 2048) { 1003 u32 data; 1004 1005 data = (width - 1) | align; 1006 1007 for (i = 0; i < height; ++i) { 1008 __raw_writel(data, fb_base + pos); 1009 pos += line_length; 1010 } 1011 } else { 1012 unsigned long Bpp = (is8bpp ? 1 : 4); 1013 unsigned long nwidth = width & -2048; 1014 u32 fdata, ldata; 1015 1016 fdata = (2048 - 1) | align; 1017 ldata = ((width & 2047) - 1) | align; 1018 1019 for (i = 0; i < height; ++i) { 1020 for (j = 0; j < nwidth; j += 2048) 1021 __raw_writel(fdata, fb_base + pos + j*Bpp); 1022 if (j < width) 1023 __raw_writel(ldata, fb_base + pos + j*Bpp); 1024 pos += line_length; 1025 } 1026 } 1027 wmb(); 1028 1029 /* Disable block fill mode. */ 1030 __raw_writel((is8bpp 1031 ? TGA_MODE_SBM_8BPP | TGA_MODE_SIMPLE 1032 : TGA_MODE_SBM_24BPP | TGA_MODE_SIMPLE), 1033 regs_base + TGA_MODE_REG); 1034 } 1035 1036 /* 1037 * tgafb_copyarea - REQUIRED function. Can use generic routines if 1038 * non acclerated hardware and packed pixel based. 1039 * Copies on area of the screen to another area. 1040 * 1041 * @info: frame buffer structure that represents a single frame buffer 1042 * @area: structure defining the source and destination. 1043 */ 1044 1045 /* Handle the special case of copying entire lines, e.g. during scrolling. 1046 We can avoid a lot of needless computation in this case. In the 8bpp 1047 case we need to use the COPY64 registers instead of mask writes into 1048 the frame buffer to achieve maximum performance. */ 1049 1050 static inline void 1051 copyarea_line_8bpp(struct fb_info *info, u32 dy, u32 sy, 1052 u32 height, u32 width) 1053 { 1054 struct tga_par *par = (struct tga_par *) info->par; 1055 void __iomem *tga_regs = par->tga_regs_base; 1056 unsigned long dpos, spos, i, n64; 1057 1058 /* Set up the MODE and PIXELSHIFT registers. */ 1059 __raw_writel(TGA_MODE_SBM_8BPP | TGA_MODE_COPY, tga_regs+TGA_MODE_REG); 1060 __raw_writel(0, tga_regs+TGA_PIXELSHIFT_REG); 1061 wmb(); 1062 1063 n64 = (height * width) / 64; 1064 1065 if (sy < dy) { 1066 spos = (sy + height) * width; 1067 dpos = (dy + height) * width; 1068 1069 for (i = 0; i < n64; ++i) { 1070 spos -= 64; 1071 dpos -= 64; 1072 __raw_writel(spos, tga_regs+TGA_COPY64_SRC); 1073 wmb(); 1074 __raw_writel(dpos, tga_regs+TGA_COPY64_DST); 1075 wmb(); 1076 } 1077 } else { 1078 spos = sy * width; 1079 dpos = dy * width; 1080 1081 for (i = 0; i < n64; ++i) { 1082 __raw_writel(spos, tga_regs+TGA_COPY64_SRC); 1083 wmb(); 1084 __raw_writel(dpos, tga_regs+TGA_COPY64_DST); 1085 wmb(); 1086 spos += 64; 1087 dpos += 64; 1088 } 1089 } 1090 1091 /* Reset the MODE register to normal. */ 1092 __raw_writel(TGA_MODE_SBM_8BPP|TGA_MODE_SIMPLE, tga_regs+TGA_MODE_REG); 1093 } 1094 1095 static inline void 1096 copyarea_line_32bpp(struct fb_info *info, u32 dy, u32 sy, 1097 u32 height, u32 width) 1098 { 1099 struct tga_par *par = (struct tga_par *) info->par; 1100 void __iomem *tga_regs = par->tga_regs_base; 1101 void __iomem *tga_fb = par->tga_fb_base; 1102 void __iomem *src; 1103 void __iomem *dst; 1104 unsigned long i, n16; 1105 1106 /* Set up the MODE and PIXELSHIFT registers. */ 1107 __raw_writel(TGA_MODE_SBM_24BPP | TGA_MODE_COPY, tga_regs+TGA_MODE_REG); 1108 __raw_writel(0, tga_regs+TGA_PIXELSHIFT_REG); 1109 wmb(); 1110 1111 n16 = (height * width) / 16; 1112 1113 if (sy < dy) { 1114 src = tga_fb + (sy + height) * width * 4; 1115 dst = tga_fb + (dy + height) * width * 4; 1116 1117 for (i = 0; i < n16; ++i) { 1118 src -= 64; 1119 dst -= 64; 1120 __raw_writel(0xffff, src); 1121 wmb(); 1122 __raw_writel(0xffff, dst); 1123 wmb(); 1124 } 1125 } else { 1126 src = tga_fb + sy * width * 4; 1127 dst = tga_fb + dy * width * 4; 1128 1129 for (i = 0; i < n16; ++i) { 1130 __raw_writel(0xffff, src); 1131 wmb(); 1132 __raw_writel(0xffff, dst); 1133 wmb(); 1134 src += 64; 1135 dst += 64; 1136 } 1137 } 1138 1139 /* Reset the MODE register to normal. */ 1140 __raw_writel(TGA_MODE_SBM_24BPP|TGA_MODE_SIMPLE, tga_regs+TGA_MODE_REG); 1141 } 1142 1143 /* The (almost) general case of backward copy in 8bpp mode. */ 1144 static inline void 1145 copyarea_8bpp(struct fb_info *info, u32 dx, u32 dy, u32 sx, u32 sy, 1146 u32 height, u32 width, u32 line_length, 1147 const struct fb_copyarea *area) 1148 { 1149 struct tga_par *par = (struct tga_par *) info->par; 1150 unsigned i, yincr; 1151 int depos, sepos, backward, last_step, step; 1152 u32 mask_last; 1153 unsigned n32; 1154 void __iomem *tga_regs; 1155 void __iomem *tga_fb; 1156 1157 /* Do acceleration only if we are aligned on 8 pixels */ 1158 if ((dx | sx | width) & 7) { 1159 cfb_copyarea(info, area); 1160 return; 1161 } 1162 1163 yincr = line_length; 1164 if (dy > sy) { 1165 dy += height - 1; 1166 sy += height - 1; 1167 yincr = -yincr; 1168 } 1169 backward = dy == sy && dx > sx && dx < sx + width; 1170 1171 /* Compute the offsets and alignments in the frame buffer. 1172 More than anything else, these control how we do copies. */ 1173 depos = dy * line_length + dx; 1174 sepos = sy * line_length + sx; 1175 if (backward) { 1176 depos += width; 1177 sepos += width; 1178 } 1179 1180 /* Next copy full words at a time. */ 1181 n32 = width / 32; 1182 last_step = width % 32; 1183 1184 /* Finally copy the unaligned head of the span. */ 1185 mask_last = (1ul << last_step) - 1; 1186 1187 if (!backward) { 1188 step = 32; 1189 last_step = 32; 1190 } else { 1191 step = -32; 1192 last_step = -last_step; 1193 sepos -= 32; 1194 depos -= 32; 1195 } 1196 1197 tga_regs = par->tga_regs_base; 1198 tga_fb = par->tga_fb_base; 1199 1200 /* Set up the MODE and PIXELSHIFT registers. */ 1201 __raw_writel(TGA_MODE_SBM_8BPP|TGA_MODE_COPY, tga_regs+TGA_MODE_REG); 1202 __raw_writel(0, tga_regs+TGA_PIXELSHIFT_REG); 1203 wmb(); 1204 1205 for (i = 0; i < height; ++i) { 1206 unsigned long j; 1207 void __iomem *sfb; 1208 void __iomem *dfb; 1209 1210 sfb = tga_fb + sepos; 1211 dfb = tga_fb + depos; 1212 1213 for (j = 0; j < n32; j++) { 1214 if (j < 2 && j + 1 < n32 && !backward && 1215 !(((unsigned long)sfb | (unsigned long)dfb) & 63)) { 1216 do { 1217 __raw_writel(sfb - tga_fb, tga_regs+TGA_COPY64_SRC); 1218 wmb(); 1219 __raw_writel(dfb - tga_fb, tga_regs+TGA_COPY64_DST); 1220 wmb(); 1221 sfb += 64; 1222 dfb += 64; 1223 j += 2; 1224 } while (j + 1 < n32); 1225 j--; 1226 continue; 1227 } 1228 __raw_writel(0xffffffff, sfb); 1229 wmb(); 1230 __raw_writel(0xffffffff, dfb); 1231 wmb(); 1232 sfb += step; 1233 dfb += step; 1234 } 1235 1236 if (mask_last) { 1237 sfb += last_step - step; 1238 dfb += last_step - step; 1239 __raw_writel(mask_last, sfb); 1240 wmb(); 1241 __raw_writel(mask_last, dfb); 1242 wmb(); 1243 } 1244 1245 sepos += yincr; 1246 depos += yincr; 1247 } 1248 1249 /* Reset the MODE register to normal. */ 1250 __raw_writel(TGA_MODE_SBM_8BPP|TGA_MODE_SIMPLE, tga_regs+TGA_MODE_REG); 1251 } 1252 1253 static void 1254 tgafb_copyarea(struct fb_info *info, const struct fb_copyarea *area) 1255 { 1256 unsigned long dx, dy, width, height, sx, sy, vxres, vyres; 1257 unsigned long line_length, bpp; 1258 1259 dx = area->dx; 1260 dy = area->dy; 1261 width = area->width; 1262 height = area->height; 1263 sx = area->sx; 1264 sy = area->sy; 1265 vxres = info->var.xres_virtual; 1266 vyres = info->var.yres_virtual; 1267 line_length = info->fix.line_length; 1268 1269 /* The top left corners must be in the virtual screen. */ 1270 if (dx > vxres || sx > vxres || dy > vyres || sy > vyres) 1271 return; 1272 1273 /* Clip the destination. */ 1274 if (dx + width > vxres) 1275 width = vxres - dx; 1276 if (dy + height > vyres) 1277 height = vyres - dy; 1278 1279 /* The source must be completely inside the virtual screen. */ 1280 if (sx + width > vxres || sy + height > vyres) 1281 return; 1282 1283 bpp = info->var.bits_per_pixel; 1284 1285 /* Detect copies of the entire line. */ 1286 if (!(line_length & 63) && width * (bpp >> 3) == line_length) { 1287 if (bpp == 8) 1288 copyarea_line_8bpp(info, dy, sy, height, width); 1289 else 1290 copyarea_line_32bpp(info, dy, sy, height, width); 1291 } 1292 1293 /* ??? The documentation is unclear to me exactly how the pixelshift 1294 register works in 32bpp mode. Since I don't have hardware to test, 1295 give up for now and fall back on the generic routines. */ 1296 else if (bpp == 32) 1297 cfb_copyarea(info, area); 1298 1299 else 1300 copyarea_8bpp(info, dx, dy, sx, sy, height, 1301 width, line_length, area); 1302 } 1303 1304 1305 /* 1306 * Initialisation 1307 */ 1308 1309 static void 1310 tgafb_init_fix(struct fb_info *info) 1311 { 1312 struct tga_par *par = (struct tga_par *)info->par; 1313 int tga_bus_pci = dev_is_pci(par->dev); 1314 int tga_bus_tc = TGA_BUS_TC(par->dev); 1315 u8 tga_type = par->tga_type; 1316 const char *tga_type_name = NULL; 1317 unsigned memory_size; 1318 1319 switch (tga_type) { 1320 case TGA_TYPE_8PLANE: 1321 if (tga_bus_pci) 1322 tga_type_name = "Digital ZLXp-E1"; 1323 if (tga_bus_tc) 1324 tga_type_name = "Digital ZLX-E1"; 1325 memory_size = 2097152; 1326 break; 1327 case TGA_TYPE_24PLANE: 1328 if (tga_bus_pci) 1329 tga_type_name = "Digital ZLXp-E2"; 1330 if (tga_bus_tc) 1331 tga_type_name = "Digital ZLX-E2"; 1332 memory_size = 8388608; 1333 break; 1334 case TGA_TYPE_24PLUSZ: 1335 if (tga_bus_pci) 1336 tga_type_name = "Digital ZLXp-E3"; 1337 if (tga_bus_tc) 1338 tga_type_name = "Digital ZLX-E3"; 1339 memory_size = 16777216; 1340 break; 1341 } 1342 if (!tga_type_name) { 1343 tga_type_name = "Unknown"; 1344 memory_size = 16777216; 1345 } 1346 1347 strlcpy(info->fix.id, tga_type_name, sizeof(info->fix.id)); 1348 1349 info->fix.type = FB_TYPE_PACKED_PIXELS; 1350 info->fix.type_aux = 0; 1351 info->fix.visual = (tga_type == TGA_TYPE_8PLANE 1352 ? FB_VISUAL_PSEUDOCOLOR 1353 : FB_VISUAL_DIRECTCOLOR); 1354 1355 info->fix.smem_start = (size_t) par->tga_fb_base; 1356 info->fix.smem_len = memory_size; 1357 info->fix.mmio_start = (size_t) par->tga_regs_base; 1358 info->fix.mmio_len = 512; 1359 1360 info->fix.xpanstep = 0; 1361 info->fix.ypanstep = 0; 1362 info->fix.ywrapstep = 0; 1363 1364 info->fix.accel = FB_ACCEL_DEC_TGA; 1365 1366 /* 1367 * These are needed by fb_set_logo_truepalette(), so we 1368 * set them here for 24-plane cards. 1369 */ 1370 if (tga_type != TGA_TYPE_8PLANE) { 1371 info->var.red.length = 8; 1372 info->var.green.length = 8; 1373 info->var.blue.length = 8; 1374 info->var.red.offset = 16; 1375 info->var.green.offset = 8; 1376 info->var.blue.offset = 0; 1377 } 1378 } 1379 1380 static int tgafb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) 1381 { 1382 /* We just use this to catch switches out of graphics mode. */ 1383 tgafb_set_par(info); /* A bit of overkill for BASE_ADDR reset. */ 1384 return 0; 1385 } 1386 1387 static int tgafb_register(struct device *dev) 1388 { 1389 static const struct fb_videomode modedb_tc = { 1390 /* 1280x1024 @ 72 Hz, 76.8 kHz hsync */ 1391 "1280x1024@72", 0, 1280, 1024, 7645, 224, 28, 33, 3, 160, 3, 1392 FB_SYNC_ON_GREEN, FB_VMODE_NONINTERLACED 1393 }; 1394 1395 static unsigned int const fb_offset_presets[4] = { 1396 TGA_8PLANE_FB_OFFSET, 1397 TGA_24PLANE_FB_OFFSET, 1398 0xffffffff, 1399 TGA_24PLUSZ_FB_OFFSET 1400 }; 1401 1402 const struct fb_videomode *modedb_tga = NULL; 1403 resource_size_t bar0_start = 0, bar0_len = 0; 1404 const char *mode_option_tga = NULL; 1405 int tga_bus_pci = dev_is_pci(dev); 1406 int tga_bus_tc = TGA_BUS_TC(dev); 1407 unsigned int modedbsize_tga = 0; 1408 void __iomem *mem_base; 1409 struct fb_info *info; 1410 struct tga_par *par; 1411 u8 tga_type; 1412 int ret = 0; 1413 1414 /* Enable device in PCI config. */ 1415 if (tga_bus_pci && pci_enable_device(to_pci_dev(dev))) { 1416 printk(KERN_ERR "tgafb: Cannot enable PCI device\n"); 1417 return -ENODEV; 1418 } 1419 1420 /* Allocate the fb and par structures. */ 1421 info = framebuffer_alloc(sizeof(struct tga_par), dev); 1422 if (!info) 1423 return -ENOMEM; 1424 1425 par = info->par; 1426 dev_set_drvdata(dev, info); 1427 1428 /* Request the mem regions. */ 1429 ret = -ENODEV; 1430 if (tga_bus_pci) { 1431 bar0_start = pci_resource_start(to_pci_dev(dev), 0); 1432 bar0_len = pci_resource_len(to_pci_dev(dev), 0); 1433 } 1434 if (tga_bus_tc) { 1435 bar0_start = to_tc_dev(dev)->resource.start; 1436 bar0_len = to_tc_dev(dev)->resource.end - bar0_start + 1; 1437 } 1438 if (!request_mem_region (bar0_start, bar0_len, "tgafb")) { 1439 printk(KERN_ERR "tgafb: cannot reserve FB region\n"); 1440 goto err0; 1441 } 1442 1443 /* Map the framebuffer. */ 1444 mem_base = ioremap(bar0_start, bar0_len); 1445 if (!mem_base) { 1446 printk(KERN_ERR "tgafb: Cannot map MMIO\n"); 1447 goto err1; 1448 } 1449 1450 /* Grab info about the card. */ 1451 tga_type = (readl(mem_base) >> 12) & 0x0f; 1452 par->dev = dev; 1453 par->tga_mem_base = mem_base; 1454 par->tga_fb_base = mem_base + fb_offset_presets[tga_type]; 1455 par->tga_regs_base = mem_base + TGA_REGS_OFFSET; 1456 par->tga_type = tga_type; 1457 if (tga_bus_pci) 1458 par->tga_chip_rev = (to_pci_dev(dev))->revision; 1459 if (tga_bus_tc) 1460 par->tga_chip_rev = TGA_READ_REG(par, TGA_START_REG) & 0xff; 1461 1462 /* Setup framebuffer. */ 1463 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA | 1464 FBINFO_HWACCEL_IMAGEBLIT | FBINFO_HWACCEL_FILLRECT; 1465 info->fbops = &tgafb_ops; 1466 info->screen_base = par->tga_fb_base; 1467 info->pseudo_palette = par->palette; 1468 1469 /* This should give a reasonable default video mode. */ 1470 if (tga_bus_pci) { 1471 mode_option_tga = mode_option_pci; 1472 } 1473 if (tga_bus_tc) { 1474 mode_option_tga = mode_option_tc; 1475 modedb_tga = &modedb_tc; 1476 modedbsize_tga = 1; 1477 } 1478 1479 tgafb_init_fix(info); 1480 1481 ret = fb_find_mode(&info->var, info, 1482 mode_option ? mode_option : mode_option_tga, 1483 modedb_tga, modedbsize_tga, NULL, 1484 tga_type == TGA_TYPE_8PLANE ? 8 : 32); 1485 if (ret == 0 || ret == 4) { 1486 printk(KERN_ERR "tgafb: Could not find valid video mode\n"); 1487 ret = -EINVAL; 1488 goto err1; 1489 } 1490 1491 if (fb_alloc_cmap(&info->cmap, 256, 0)) { 1492 printk(KERN_ERR "tgafb: Could not allocate color map\n"); 1493 ret = -ENOMEM; 1494 goto err1; 1495 } 1496 1497 tgafb_set_par(info); 1498 1499 if (register_framebuffer(info) < 0) { 1500 printk(KERN_ERR "tgafb: Could not register framebuffer\n"); 1501 ret = -EINVAL; 1502 goto err2; 1503 } 1504 1505 if (tga_bus_pci) { 1506 pr_info("tgafb: DC21030 [TGA] detected, rev=0x%02x\n", 1507 par->tga_chip_rev); 1508 pr_info("tgafb: at PCI bus %d, device %d, function %d\n", 1509 to_pci_dev(dev)->bus->number, 1510 PCI_SLOT(to_pci_dev(dev)->devfn), 1511 PCI_FUNC(to_pci_dev(dev)->devfn)); 1512 } 1513 if (tga_bus_tc) 1514 pr_info("tgafb: SFB+ detected, rev=0x%02x\n", 1515 par->tga_chip_rev); 1516 fb_info(info, "%s frame buffer device at 0x%lx\n", 1517 info->fix.id, (long)bar0_start); 1518 1519 return 0; 1520 1521 err2: 1522 fb_dealloc_cmap(&info->cmap); 1523 err1: 1524 if (mem_base) 1525 iounmap(mem_base); 1526 release_mem_region(bar0_start, bar0_len); 1527 err0: 1528 framebuffer_release(info); 1529 return ret; 1530 } 1531 1532 static void tgafb_unregister(struct device *dev) 1533 { 1534 resource_size_t bar0_start = 0, bar0_len = 0; 1535 int tga_bus_pci = dev_is_pci(dev); 1536 int tga_bus_tc = TGA_BUS_TC(dev); 1537 struct fb_info *info = NULL; 1538 struct tga_par *par; 1539 1540 info = dev_get_drvdata(dev); 1541 if (!info) 1542 return; 1543 1544 par = info->par; 1545 unregister_framebuffer(info); 1546 fb_dealloc_cmap(&info->cmap); 1547 iounmap(par->tga_mem_base); 1548 if (tga_bus_pci) { 1549 bar0_start = pci_resource_start(to_pci_dev(dev), 0); 1550 bar0_len = pci_resource_len(to_pci_dev(dev), 0); 1551 } 1552 if (tga_bus_tc) { 1553 bar0_start = to_tc_dev(dev)->resource.start; 1554 bar0_len = to_tc_dev(dev)->resource.end - bar0_start + 1; 1555 } 1556 release_mem_region(bar0_start, bar0_len); 1557 framebuffer_release(info); 1558 } 1559 1560 static void tgafb_exit(void) 1561 { 1562 tc_unregister_driver(&tgafb_tc_driver); 1563 pci_unregister_driver(&tgafb_pci_driver); 1564 } 1565 1566 #ifndef MODULE 1567 static int tgafb_setup(char *arg) 1568 { 1569 char *this_opt; 1570 1571 if (arg && *arg) { 1572 while ((this_opt = strsep(&arg, ","))) { 1573 if (!*this_opt) 1574 continue; 1575 if (!strncmp(this_opt, "mode:", 5)) 1576 mode_option = this_opt+5; 1577 else 1578 printk(KERN_ERR 1579 "tgafb: unknown parameter %s\n", 1580 this_opt); 1581 } 1582 } 1583 1584 return 0; 1585 } 1586 #endif /* !MODULE */ 1587 1588 static int tgafb_init(void) 1589 { 1590 int status; 1591 #ifndef MODULE 1592 char *option = NULL; 1593 1594 if (fb_get_options("tgafb", &option)) 1595 return -ENODEV; 1596 tgafb_setup(option); 1597 #endif 1598 status = pci_register_driver(&tgafb_pci_driver); 1599 if (!status) 1600 status = tc_register_driver(&tgafb_tc_driver); 1601 return status; 1602 } 1603 1604 /* 1605 * Modularisation 1606 */ 1607 1608 module_init(tgafb_init); 1609 module_exit(tgafb_exit); 1610 1611 MODULE_DESCRIPTION("Framebuffer driver for TGA/SFB+ chipset"); 1612 MODULE_LICENSE("GPL"); 1613