1/* 2 * linux/drivers/video/s3fb.c -- Frame buffer device driver for S3 Trio/Virge 3 * 4 * Copyright (c) 2006-2007 Ondrej Zajicek <santiago@crfreenet.org> 5 * 6 * This file is subject to the terms and conditions of the GNU General Public 7 * License. See the file COPYING in the main directory of this archive for 8 * more details. 9 * 10 * Code is based on David Boucher's viafb (http://davesdomain.org.uk/viafb/) 11 * which is based on the code of neofb. 12 */ 13 14#include <linux/aperture.h> 15#include <linux/module.h> 16#include <linux/kernel.h> 17#include <linux/errno.h> 18#include <linux/string.h> 19#include <linux/mm.h> 20#include <linux/tty.h> 21#include <linux/delay.h> 22#include <linux/fb.h> 23#include <linux/svga.h> 24#include <linux/init.h> 25#include <linux/pci.h> 26#include <linux/console.h> /* Why should fb driver call console functions? because console_lock() */ 27#include <video/vga.h> 28 29#include <linux/i2c.h> 30#include <linux/i2c-algo-bit.h> 31 32struct s3fb_info { 33 int chip, rev, mclk_freq; 34 int wc_cookie; 35 struct vgastate state; 36 struct mutex open_lock; 37 unsigned int ref_count; 38 u32 pseudo_palette[16]; 39#ifdef CONFIG_FB_S3_DDC 40 u8 __iomem *mmio; 41 bool ddc_registered; 42 struct i2c_adapter ddc_adapter; 43 struct i2c_algo_bit_data ddc_algo; 44#endif 45}; 46 47 48/* ------------------------------------------------------------------------- */ 49 50static const struct svga_fb_format s3fb_formats[] = { 51 { 0, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 0, 52 FB_TYPE_TEXT, FB_AUX_TEXT_SVGA_STEP4, FB_VISUAL_PSEUDOCOLOR, 8, 16}, 53 { 4, {0, 4, 0}, {0, 4, 0}, {0, 4, 0}, {0, 0, 0}, 0, 54 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_PSEUDOCOLOR, 8, 16}, 55 { 4, {0, 4, 0}, {0, 4, 0}, {0, 4, 0}, {0, 0, 0}, 1, 56 FB_TYPE_INTERLEAVED_PLANES, 1, FB_VISUAL_PSEUDOCOLOR, 8, 16}, 57 { 8, {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0}, 0, 58 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_PSEUDOCOLOR, 4, 8}, 59 {16, {10, 5, 0}, {5, 5, 0}, {0, 5, 0}, {0, 0, 0}, 0, 60 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 2, 4}, 61 {16, {11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0}, 0, 62 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 2, 4}, 63 {24, {16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {0, 0, 0}, 0, 64 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 1, 2}, 65 {32, {16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {0, 0, 0}, 0, 66 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 1, 2}, 67 SVGA_FORMAT_END 68}; 69 70 71static const struct svga_pll s3_pll = {3, 129, 3, 33, 0, 3, 72 35000, 240000, 14318}; 73static const struct svga_pll s3_trio3d_pll = {3, 129, 3, 31, 0, 4, 74 230000, 460000, 14318}; 75 76static const int s3_memsizes[] = {4096, 0, 3072, 8192, 2048, 6144, 1024, 512}; 77 78static const char * const s3_names[] = {"S3 Unknown", "S3 Trio32", "S3 Trio64", "S3 Trio64V+", 79 "S3 Trio64UV+", "S3 Trio64V2/DX", "S3 Trio64V2/GX", 80 "S3 Plato/PX", "S3 Aurora64V+", "S3 Virge", 81 "S3 Virge/VX", "S3 Virge/DX", "S3 Virge/GX", 82 "S3 Virge/GX2", "S3 Virge/GX2+", "", 83 "S3 Trio3D/1X", "S3 Trio3D/2X", "S3 Trio3D/2X", 84 "S3 Trio3D", "S3 Virge/MX"}; 85 86#define CHIP_UNKNOWN 0x00 87#define CHIP_732_TRIO32 0x01 88#define CHIP_764_TRIO64 0x02 89#define CHIP_765_TRIO64VP 0x03 90#define CHIP_767_TRIO64UVP 0x04 91#define CHIP_775_TRIO64V2_DX 0x05 92#define CHIP_785_TRIO64V2_GX 0x06 93#define CHIP_551_PLATO_PX 0x07 94#define CHIP_M65_AURORA64VP 0x08 95#define CHIP_325_VIRGE 0x09 96#define CHIP_988_VIRGE_VX 0x0A 97#define CHIP_375_VIRGE_DX 0x0B 98#define CHIP_385_VIRGE_GX 0x0C 99#define CHIP_357_VIRGE_GX2 0x0D 100#define CHIP_359_VIRGE_GX2P 0x0E 101#define CHIP_360_TRIO3D_1X 0x10 102#define CHIP_362_TRIO3D_2X 0x11 103#define CHIP_368_TRIO3D_2X 0x12 104#define CHIP_365_TRIO3D 0x13 105#define CHIP_260_VIRGE_MX 0x14 106 107#define CHIP_XXX_TRIO 0x80 108#define CHIP_XXX_TRIO64V2_DXGX 0x81 109#define CHIP_XXX_VIRGE_DXGX 0x82 110#define CHIP_36X_TRIO3D_1X_2X 0x83 111 112#define CHIP_UNDECIDED_FLAG 0x80 113#define CHIP_MASK 0xFF 114 115#define MMIO_OFFSET 0x1000000 116#define MMIO_SIZE 0x10000 117 118/* CRT timing register sets */ 119 120static const struct vga_regset s3_h_total_regs[] = {{0x00, 0, 7}, {0x5D, 0, 0}, VGA_REGSET_END}; 121static const struct vga_regset s3_h_display_regs[] = {{0x01, 0, 7}, {0x5D, 1, 1}, VGA_REGSET_END}; 122static const struct vga_regset s3_h_blank_start_regs[] = {{0x02, 0, 7}, {0x5D, 2, 2}, VGA_REGSET_END}; 123static const struct vga_regset s3_h_blank_end_regs[] = {{0x03, 0, 4}, {0x05, 7, 7}, VGA_REGSET_END}; 124static const struct vga_regset s3_h_sync_start_regs[] = {{0x04, 0, 7}, {0x5D, 4, 4}, VGA_REGSET_END}; 125static const struct vga_regset s3_h_sync_end_regs[] = {{0x05, 0, 4}, VGA_REGSET_END}; 126 127static const struct vga_regset s3_v_total_regs[] = {{0x06, 0, 7}, {0x07, 0, 0}, {0x07, 5, 5}, {0x5E, 0, 0}, VGA_REGSET_END}; 128static const struct vga_regset s3_v_display_regs[] = {{0x12, 0, 7}, {0x07, 1, 1}, {0x07, 6, 6}, {0x5E, 1, 1}, VGA_REGSET_END}; 129static const struct vga_regset s3_v_blank_start_regs[] = {{0x15, 0, 7}, {0x07, 3, 3}, {0x09, 5, 5}, {0x5E, 2, 2}, VGA_REGSET_END}; 130static const struct vga_regset s3_v_blank_end_regs[] = {{0x16, 0, 7}, VGA_REGSET_END}; 131static const struct vga_regset s3_v_sync_start_regs[] = {{0x10, 0, 7}, {0x07, 2, 2}, {0x07, 7, 7}, {0x5E, 4, 4}, VGA_REGSET_END}; 132static const struct vga_regset s3_v_sync_end_regs[] = {{0x11, 0, 3}, VGA_REGSET_END}; 133 134static const struct vga_regset s3_line_compare_regs[] = {{0x18, 0, 7}, {0x07, 4, 4}, {0x09, 6, 6}, {0x5E, 6, 6}, VGA_REGSET_END}; 135static const struct vga_regset s3_start_address_regs[] = {{0x0d, 0, 7}, {0x0c, 0, 7}, {0x69, 0, 4}, VGA_REGSET_END}; 136static const struct vga_regset s3_offset_regs[] = {{0x13, 0, 7}, {0x51, 4, 5}, VGA_REGSET_END}; /* set 0x43 bit 2 to 0 */ 137 138static const struct vga_regset s3_dtpc_regs[] = {{0x3B, 0, 7}, {0x5D, 6, 6}, VGA_REGSET_END}; 139 140static const struct svga_timing_regs s3_timing_regs = { 141 s3_h_total_regs, s3_h_display_regs, s3_h_blank_start_regs, 142 s3_h_blank_end_regs, s3_h_sync_start_regs, s3_h_sync_end_regs, 143 s3_v_total_regs, s3_v_display_regs, s3_v_blank_start_regs, 144 s3_v_blank_end_regs, s3_v_sync_start_regs, s3_v_sync_end_regs, 145}; 146 147 148/* ------------------------------------------------------------------------- */ 149 150/* Module parameters */ 151 152 153static char *mode_option; 154static int mtrr = 1; 155static int fasttext = 1; 156 157 158MODULE_AUTHOR("(c) 2006-2007 Ondrej Zajicek <santiago@crfreenet.org>"); 159MODULE_LICENSE("GPL"); 160MODULE_DESCRIPTION("fbdev driver for S3 Trio/Virge"); 161 162module_param(mode_option, charp, 0444); 163MODULE_PARM_DESC(mode_option, "Default video mode ('640x480-8@60', etc)"); 164module_param_named(mode, mode_option, charp, 0444); 165MODULE_PARM_DESC(mode, "Default video mode ('640x480-8@60', etc) (deprecated)"); 166module_param(mtrr, int, 0444); 167MODULE_PARM_DESC(mtrr, "Enable write-combining with MTRR (1=enable, 0=disable, default=1)"); 168 169module_param(fasttext, int, 0644); 170MODULE_PARM_DESC(fasttext, "Enable S3 fast text mode (1=enable, 0=disable, default=1)"); 171 172 173/* ------------------------------------------------------------------------- */ 174 175#ifdef CONFIG_FB_S3_DDC 176 177#define DDC_REG 0xaa /* Trio 3D/1X/2X */ 178#define DDC_MMIO_REG 0xff20 /* all other chips */ 179#define DDC_SCL_OUT (1 << 0) 180#define DDC_SDA_OUT (1 << 1) 181#define DDC_SCL_IN (1 << 2) 182#define DDC_SDA_IN (1 << 3) 183#define DDC_DRIVE_EN (1 << 4) 184 185static bool s3fb_ddc_needs_mmio(int chip) 186{ 187 return !(chip == CHIP_360_TRIO3D_1X || 188 chip == CHIP_362_TRIO3D_2X || 189 chip == CHIP_368_TRIO3D_2X); 190} 191 192static u8 s3fb_ddc_read(struct s3fb_info *par) 193{ 194 if (s3fb_ddc_needs_mmio(par->chip)) 195 return readb(par->mmio + DDC_MMIO_REG); 196 else 197 return vga_rcrt(par->state.vgabase, DDC_REG); 198} 199 200static void s3fb_ddc_write(struct s3fb_info *par, u8 val) 201{ 202 if (s3fb_ddc_needs_mmio(par->chip)) 203 writeb(val, par->mmio + DDC_MMIO_REG); 204 else 205 vga_wcrt(par->state.vgabase, DDC_REG, val); 206} 207 208static void s3fb_ddc_setscl(void *data, int val) 209{ 210 struct s3fb_info *par = data; 211 unsigned char reg; 212 213 reg = s3fb_ddc_read(par) | DDC_DRIVE_EN; 214 if (val) 215 reg |= DDC_SCL_OUT; 216 else 217 reg &= ~DDC_SCL_OUT; 218 s3fb_ddc_write(par, reg); 219} 220 221static void s3fb_ddc_setsda(void *data, int val) 222{ 223 struct s3fb_info *par = data; 224 unsigned char reg; 225 226 reg = s3fb_ddc_read(par) | DDC_DRIVE_EN; 227 if (val) 228 reg |= DDC_SDA_OUT; 229 else 230 reg &= ~DDC_SDA_OUT; 231 s3fb_ddc_write(par, reg); 232} 233 234static int s3fb_ddc_getscl(void *data) 235{ 236 struct s3fb_info *par = data; 237 238 return !!(s3fb_ddc_read(par) & DDC_SCL_IN); 239} 240 241static int s3fb_ddc_getsda(void *data) 242{ 243 struct s3fb_info *par = data; 244 245 return !!(s3fb_ddc_read(par) & DDC_SDA_IN); 246} 247 248static int s3fb_setup_ddc_bus(struct fb_info *info) 249{ 250 struct s3fb_info *par = info->par; 251 252 strscpy(par->ddc_adapter.name, info->fix.id, 253 sizeof(par->ddc_adapter.name)); 254 par->ddc_adapter.owner = THIS_MODULE; 255 par->ddc_adapter.algo_data = &par->ddc_algo; 256 par->ddc_adapter.dev.parent = info->device; 257 par->ddc_algo.setsda = s3fb_ddc_setsda; 258 par->ddc_algo.setscl = s3fb_ddc_setscl; 259 par->ddc_algo.getsda = s3fb_ddc_getsda; 260 par->ddc_algo.getscl = s3fb_ddc_getscl; 261 par->ddc_algo.udelay = 10; 262 par->ddc_algo.timeout = 20; 263 par->ddc_algo.data = par; 264 265 i2c_set_adapdata(&par->ddc_adapter, par); 266 267 /* 268 * some Virge cards have external MUX to switch chip I2C bus between 269 * DDC and extension pins - switch it do DDC 270 */ 271/* vga_wseq(par->state.vgabase, 0x08, 0x06); - not needed, already unlocked */ 272 if (par->chip == CHIP_357_VIRGE_GX2 || 273 par->chip == CHIP_359_VIRGE_GX2P || 274 par->chip == CHIP_260_VIRGE_MX) 275 svga_wseq_mask(par->state.vgabase, 0x0d, 0x01, 0x03); 276 else 277 svga_wseq_mask(par->state.vgabase, 0x0d, 0x00, 0x03); 278 /* some Virge need this or the DDC is ignored */ 279 svga_wcrt_mask(par->state.vgabase, 0x5c, 0x03, 0x03); 280 281 return i2c_bit_add_bus(&par->ddc_adapter); 282} 283#endif /* CONFIG_FB_S3_DDC */ 284 285 286/* ------------------------------------------------------------------------- */ 287 288/* Set font in S3 fast text mode */ 289 290static void s3fb_settile_fast(struct fb_info *info, struct fb_tilemap *map) 291{ 292 const u8 *font = map->data; 293 u8 __iomem *fb = (u8 __iomem *) info->screen_base; 294 int i, c; 295 296 if ((map->width != 8) || (map->height != 16) || 297 (map->depth != 1) || (map->length != 256)) { 298 fb_err(info, "unsupported font parameters: width %d, height %d, depth %d, length %d\n", 299 map->width, map->height, map->depth, map->length); 300 return; 301 } 302 303 fb += 2; 304 for (i = 0; i < map->height; i++) { 305 for (c = 0; c < map->length; c++) { 306 fb_writeb(font[c * map->height + i], fb + c * 4); 307 } 308 fb += 1024; 309 } 310} 311 312static void s3fb_tilecursor(struct fb_info *info, struct fb_tilecursor *cursor) 313{ 314 struct s3fb_info *par = info->par; 315 316 svga_tilecursor(par->state.vgabase, info, cursor); 317} 318 319static struct fb_tile_ops s3fb_tile_ops = { 320 .fb_settile = svga_settile, 321 .fb_tilecopy = svga_tilecopy, 322 .fb_tilefill = svga_tilefill, 323 .fb_tileblit = svga_tileblit, 324 .fb_tilecursor = s3fb_tilecursor, 325 .fb_get_tilemax = svga_get_tilemax, 326}; 327 328static struct fb_tile_ops s3fb_fast_tile_ops = { 329 .fb_settile = s3fb_settile_fast, 330 .fb_tilecopy = svga_tilecopy, 331 .fb_tilefill = svga_tilefill, 332 .fb_tileblit = svga_tileblit, 333 .fb_tilecursor = s3fb_tilecursor, 334 .fb_get_tilemax = svga_get_tilemax, 335}; 336 337 338/* ------------------------------------------------------------------------- */ 339 340/* image data is MSB-first, fb structure is MSB-first too */ 341static inline u32 expand_color(u32 c) 342{ 343 return ((c & 1) | ((c & 2) << 7) | ((c & 4) << 14) | ((c & 8) << 21)) * 0xFF; 344} 345 346/* s3fb_iplan_imageblit silently assumes that almost everything is 8-pixel aligned */ 347static void s3fb_iplan_imageblit(struct fb_info *info, const struct fb_image *image) 348{ 349 u32 fg = expand_color(image->fg_color); 350 u32 bg = expand_color(image->bg_color); 351 const u8 *src1, *src; 352 u8 __iomem *dst1; 353 u32 __iomem *dst; 354 u32 val; 355 int x, y; 356 357 src1 = image->data; 358 dst1 = info->screen_base + (image->dy * info->fix.line_length) 359 + ((image->dx / 8) * 4); 360 361 for (y = 0; y < image->height; y++) { 362 src = src1; 363 dst = (u32 __iomem *) dst1; 364 for (x = 0; x < image->width; x += 8) { 365 val = *(src++) * 0x01010101; 366 val = (val & fg) | (~val & bg); 367 fb_writel(val, dst++); 368 } 369 src1 += image->width / 8; 370 dst1 += info->fix.line_length; 371 } 372 373} 374 375/* s3fb_iplan_fillrect silently assumes that almost everything is 8-pixel aligned */ 376static void s3fb_iplan_fillrect(struct fb_info *info, const struct fb_fillrect *rect) 377{ 378 u32 fg = expand_color(rect->color); 379 u8 __iomem *dst1; 380 u32 __iomem *dst; 381 int x, y; 382 383 dst1 = info->screen_base + (rect->dy * info->fix.line_length) 384 + ((rect->dx / 8) * 4); 385 386 for (y = 0; y < rect->height; y++) { 387 dst = (u32 __iomem *) dst1; 388 for (x = 0; x < rect->width; x += 8) { 389 fb_writel(fg, dst++); 390 } 391 dst1 += info->fix.line_length; 392 } 393} 394 395 396/* image data is MSB-first, fb structure is high-nibble-in-low-byte-first */ 397static inline u32 expand_pixel(u32 c) 398{ 399 return (((c & 1) << 24) | ((c & 2) << 27) | ((c & 4) << 14) | ((c & 8) << 17) | 400 ((c & 16) << 4) | ((c & 32) << 7) | ((c & 64) >> 6) | ((c & 128) >> 3)) * 0xF; 401} 402 403/* s3fb_cfb4_imageblit silently assumes that almost everything is 8-pixel aligned */ 404static void s3fb_cfb4_imageblit(struct fb_info *info, const struct fb_image *image) 405{ 406 u32 fg = image->fg_color * 0x11111111; 407 u32 bg = image->bg_color * 0x11111111; 408 const u8 *src1, *src; 409 u8 __iomem *dst1; 410 u32 __iomem *dst; 411 u32 val; 412 int x, y; 413 414 src1 = image->data; 415 dst1 = info->screen_base + (image->dy * info->fix.line_length) 416 + ((image->dx / 8) * 4); 417 418 for (y = 0; y < image->height; y++) { 419 src = src1; 420 dst = (u32 __iomem *) dst1; 421 for (x = 0; x < image->width; x += 8) { 422 val = expand_pixel(*(src++)); 423 val = (val & fg) | (~val & bg); 424 fb_writel(val, dst++); 425 } 426 src1 += image->width / 8; 427 dst1 += info->fix.line_length; 428 } 429} 430 431static void s3fb_imageblit(struct fb_info *info, const struct fb_image *image) 432{ 433 if ((info->var.bits_per_pixel == 4) && (image->depth == 1) 434 && ((image->width % 8) == 0) && ((image->dx % 8) == 0)) { 435 if (info->fix.type == FB_TYPE_INTERLEAVED_PLANES) 436 s3fb_iplan_imageblit(info, image); 437 else 438 s3fb_cfb4_imageblit(info, image); 439 } else 440 cfb_imageblit(info, image); 441} 442 443static void s3fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect) 444{ 445 if ((info->var.bits_per_pixel == 4) 446 && ((rect->width % 8) == 0) && ((rect->dx % 8) == 0) 447 && (info->fix.type == FB_TYPE_INTERLEAVED_PLANES)) 448 s3fb_iplan_fillrect(info, rect); 449 else 450 cfb_fillrect(info, rect); 451} 452 453 454 455/* ------------------------------------------------------------------------- */ 456 457 458static void s3_set_pixclock(struct fb_info *info, u32 pixclock) 459{ 460 struct s3fb_info *par = info->par; 461 u16 m, n, r; 462 u8 regval; 463 int rv; 464 465 rv = svga_compute_pll((par->chip == CHIP_365_TRIO3D) ? &s3_trio3d_pll : &s3_pll, 466 1000000000 / pixclock, &m, &n, &r, info->node); 467 if (rv < 0) { 468 fb_err(info, "cannot set requested pixclock, keeping old value\n"); 469 return; 470 } 471 472 /* Set VGA misc register */ 473 regval = vga_r(par->state.vgabase, VGA_MIS_R); 474 vga_w(par->state.vgabase, VGA_MIS_W, regval | VGA_MIS_ENB_PLL_LOAD); 475 476 /* Set S3 clock registers */ 477 if (par->chip == CHIP_357_VIRGE_GX2 || 478 par->chip == CHIP_359_VIRGE_GX2P || 479 par->chip == CHIP_360_TRIO3D_1X || 480 par->chip == CHIP_362_TRIO3D_2X || 481 par->chip == CHIP_368_TRIO3D_2X || 482 par->chip == CHIP_260_VIRGE_MX) { 483 vga_wseq(par->state.vgabase, 0x12, (n - 2) | ((r & 3) << 6)); /* n and two bits of r */ 484 vga_wseq(par->state.vgabase, 0x29, r >> 2); /* remaining highest bit of r */ 485 } else 486 vga_wseq(par->state.vgabase, 0x12, (n - 2) | (r << 5)); 487 vga_wseq(par->state.vgabase, 0x13, m - 2); 488 489 udelay(1000); 490 491 /* Activate clock - write 0, 1, 0 to seq/15 bit 5 */ 492 regval = vga_rseq (par->state.vgabase, 0x15); /* | 0x80; */ 493 vga_wseq(par->state.vgabase, 0x15, regval & ~(1<<5)); 494 vga_wseq(par->state.vgabase, 0x15, regval | (1<<5)); 495 vga_wseq(par->state.vgabase, 0x15, regval & ~(1<<5)); 496} 497 498 499/* Open framebuffer */ 500 501static int s3fb_open(struct fb_info *info, int user) 502{ 503 struct s3fb_info *par = info->par; 504 505 mutex_lock(&(par->open_lock)); 506 if (par->ref_count == 0) { 507 void __iomem *vgabase = par->state.vgabase; 508 509 memset(&(par->state), 0, sizeof(struct vgastate)); 510 par->state.vgabase = vgabase; 511 par->state.flags = VGA_SAVE_MODE | VGA_SAVE_FONTS | VGA_SAVE_CMAP; 512 par->state.num_crtc = 0x70; 513 par->state.num_seq = 0x20; 514 save_vga(&(par->state)); 515 } 516 517 par->ref_count++; 518 mutex_unlock(&(par->open_lock)); 519 520 return 0; 521} 522 523/* Close framebuffer */ 524 525static int s3fb_release(struct fb_info *info, int user) 526{ 527 struct s3fb_info *par = info->par; 528 529 mutex_lock(&(par->open_lock)); 530 if (par->ref_count == 0) { 531 mutex_unlock(&(par->open_lock)); 532 return -EINVAL; 533 } 534 535 if (par->ref_count == 1) 536 restore_vga(&(par->state)); 537 538 par->ref_count--; 539 mutex_unlock(&(par->open_lock)); 540 541 return 0; 542} 543 544/* Validate passed in var */ 545 546static int s3fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) 547{ 548 struct s3fb_info *par = info->par; 549 int rv, mem, step; 550 u16 m, n, r; 551 552 if (!var->pixclock) 553 return -EINVAL; 554 555 /* Find appropriate format */ 556 rv = svga_match_format (s3fb_formats, var, NULL); 557 558 /* 32bpp mode is not supported on VIRGE VX, 559 24bpp is not supported on others */ 560 if ((par->chip == CHIP_988_VIRGE_VX) ? (rv == 7) : (rv == 6)) 561 rv = -EINVAL; 562 563 if (rv < 0) { 564 fb_err(info, "unsupported mode requested\n"); 565 return rv; 566 } 567 568 /* Do not allow to have real resoulution larger than virtual */ 569 if (var->xres > var->xres_virtual) 570 var->xres_virtual = var->xres; 571 572 if (var->yres > var->yres_virtual) 573 var->yres_virtual = var->yres; 574 575 /* Round up xres_virtual to have proper alignment of lines */ 576 step = s3fb_formats[rv].xresstep - 1; 577 var->xres_virtual = (var->xres_virtual+step) & ~step; 578 579 /* Check whether have enough memory */ 580 mem = ((var->bits_per_pixel * var->xres_virtual) >> 3) * var->yres_virtual; 581 if (mem > info->screen_size) { 582 fb_err(info, "not enough framebuffer memory (%d kB requested , %u kB available)\n", 583 mem >> 10, (unsigned int) (info->screen_size >> 10)); 584 return -EINVAL; 585 } 586 587 rv = svga_check_timings (&s3_timing_regs, var, info->node); 588 if (rv < 0) { 589 fb_err(info, "invalid timings requested\n"); 590 return rv; 591 } 592 593 rv = svga_compute_pll(&s3_pll, PICOS2KHZ(var->pixclock), &m, &n, &r, 594 info->node); 595 if (rv < 0) { 596 fb_err(info, "invalid pixclock value requested\n"); 597 return rv; 598 } 599 600 return 0; 601} 602 603/* Set video mode from par */ 604 605static int s3fb_set_par(struct fb_info *info) 606{ 607 struct s3fb_info *par = info->par; 608 u32 value, mode, hmul, offset_value, screen_size, multiplex, dbytes; 609 u32 bpp = info->var.bits_per_pixel; 610 u32 htotal, hsstart; 611 612 if (bpp != 0) { 613 info->fix.ypanstep = 1; 614 info->fix.line_length = (info->var.xres_virtual * bpp) / 8; 615 616 info->flags &= ~FBINFO_MISC_TILEBLITTING; 617 info->tileops = NULL; 618 619 /* in 4bpp supports 8p wide tiles only, any tiles otherwise */ 620 if (bpp == 4) { 621 bitmap_zero(info->pixmap.blit_x, FB_MAX_BLIT_WIDTH); 622 set_bit(8 - 1, info->pixmap.blit_x); 623 } else { 624 bitmap_fill(info->pixmap.blit_x, FB_MAX_BLIT_WIDTH); 625 } 626 bitmap_fill(info->pixmap.blit_y, FB_MAX_BLIT_HEIGHT); 627 628 offset_value = (info->var.xres_virtual * bpp) / 64; 629 screen_size = info->var.yres_virtual * info->fix.line_length; 630 } else { 631 info->fix.ypanstep = 16; 632 info->fix.line_length = 0; 633 634 info->flags |= FBINFO_MISC_TILEBLITTING; 635 info->tileops = fasttext ? &s3fb_fast_tile_ops : &s3fb_tile_ops; 636 637 /* supports 8x16 tiles only */ 638 bitmap_zero(info->pixmap.blit_x, FB_MAX_BLIT_WIDTH); 639 set_bit(8 - 1, info->pixmap.blit_x); 640 bitmap_zero(info->pixmap.blit_y, FB_MAX_BLIT_HEIGHT); 641 set_bit(16 - 1, info->pixmap.blit_y); 642 643 offset_value = info->var.xres_virtual / 16; 644 screen_size = (info->var.xres_virtual * info->var.yres_virtual) / 64; 645 } 646 647 info->var.xoffset = 0; 648 info->var.yoffset = 0; 649 info->var.activate = FB_ACTIVATE_NOW; 650 651 /* Unlock registers */ 652 vga_wcrt(par->state.vgabase, 0x38, 0x48); 653 vga_wcrt(par->state.vgabase, 0x39, 0xA5); 654 vga_wseq(par->state.vgabase, 0x08, 0x06); 655 svga_wcrt_mask(par->state.vgabase, 0x11, 0x00, 0x80); 656 657 /* Blank screen and turn off sync */ 658 svga_wseq_mask(par->state.vgabase, 0x01, 0x20, 0x20); 659 svga_wcrt_mask(par->state.vgabase, 0x17, 0x00, 0x80); 660 661 /* Set default values */ 662 svga_set_default_gfx_regs(par->state.vgabase); 663 svga_set_default_atc_regs(par->state.vgabase); 664 svga_set_default_seq_regs(par->state.vgabase); 665 svga_set_default_crt_regs(par->state.vgabase); 666 svga_wcrt_multi(par->state.vgabase, s3_line_compare_regs, 0xFFFFFFFF); 667 svga_wcrt_multi(par->state.vgabase, s3_start_address_regs, 0); 668 669 /* S3 specific initialization */ 670 svga_wcrt_mask(par->state.vgabase, 0x58, 0x10, 0x10); /* enable linear framebuffer */ 671 svga_wcrt_mask(par->state.vgabase, 0x31, 0x08, 0x08); /* enable sequencer access to framebuffer above 256 kB */ 672 673/* svga_wcrt_mask(par->state.vgabase, 0x33, 0x08, 0x08); */ /* DDR ? */ 674/* svga_wcrt_mask(par->state.vgabase, 0x43, 0x01, 0x01); */ /* DDR ? */ 675 svga_wcrt_mask(par->state.vgabase, 0x33, 0x00, 0x08); /* no DDR ? */ 676 svga_wcrt_mask(par->state.vgabase, 0x43, 0x00, 0x01); /* no DDR ? */ 677 678 svga_wcrt_mask(par->state.vgabase, 0x5D, 0x00, 0x28); /* Clear strange HSlen bits */ 679 680/* svga_wcrt_mask(par->state.vgabase, 0x58, 0x03, 0x03); */ 681 682/* svga_wcrt_mask(par->state.vgabase, 0x53, 0x12, 0x13); */ /* enable MMIO */ 683/* svga_wcrt_mask(par->state.vgabase, 0x40, 0x08, 0x08); */ /* enable write buffer */ 684 685 686 /* Set the offset register */ 687 fb_dbg(info, "offset register : %d\n", offset_value); 688 svga_wcrt_multi(par->state.vgabase, s3_offset_regs, offset_value); 689 690 if (par->chip != CHIP_357_VIRGE_GX2 && 691 par->chip != CHIP_359_VIRGE_GX2P && 692 par->chip != CHIP_360_TRIO3D_1X && 693 par->chip != CHIP_362_TRIO3D_2X && 694 par->chip != CHIP_368_TRIO3D_2X && 695 par->chip != CHIP_260_VIRGE_MX) { 696 vga_wcrt(par->state.vgabase, 0x54, 0x18); /* M parameter */ 697 vga_wcrt(par->state.vgabase, 0x60, 0xff); /* N parameter */ 698 vga_wcrt(par->state.vgabase, 0x61, 0xff); /* L parameter */ 699 vga_wcrt(par->state.vgabase, 0x62, 0xff); /* L parameter */ 700 } 701 702 vga_wcrt(par->state.vgabase, 0x3A, 0x35); 703 svga_wattr(par->state.vgabase, 0x33, 0x00); 704 705 if (info->var.vmode & FB_VMODE_DOUBLE) 706 svga_wcrt_mask(par->state.vgabase, 0x09, 0x80, 0x80); 707 else 708 svga_wcrt_mask(par->state.vgabase, 0x09, 0x00, 0x80); 709 710 if (info->var.vmode & FB_VMODE_INTERLACED) 711 svga_wcrt_mask(par->state.vgabase, 0x42, 0x20, 0x20); 712 else 713 svga_wcrt_mask(par->state.vgabase, 0x42, 0x00, 0x20); 714 715 /* Disable hardware graphics cursor */ 716 svga_wcrt_mask(par->state.vgabase, 0x45, 0x00, 0x01); 717 /* Disable Streams engine */ 718 svga_wcrt_mask(par->state.vgabase, 0x67, 0x00, 0x0C); 719 720 mode = svga_match_format(s3fb_formats, &(info->var), &(info->fix)); 721 722 /* S3 virge DX hack */ 723 if (par->chip == CHIP_375_VIRGE_DX) { 724 vga_wcrt(par->state.vgabase, 0x86, 0x80); 725 vga_wcrt(par->state.vgabase, 0x90, 0x00); 726 } 727 728 /* S3 virge VX hack */ 729 if (par->chip == CHIP_988_VIRGE_VX) { 730 vga_wcrt(par->state.vgabase, 0x50, 0x00); 731 vga_wcrt(par->state.vgabase, 0x67, 0x50); 732 msleep(10); /* screen remains blank sometimes without this */ 733 vga_wcrt(par->state.vgabase, 0x63, (mode <= 2) ? 0x90 : 0x09); 734 vga_wcrt(par->state.vgabase, 0x66, 0x90); 735 } 736 737 if (par->chip == CHIP_357_VIRGE_GX2 || 738 par->chip == CHIP_359_VIRGE_GX2P || 739 par->chip == CHIP_360_TRIO3D_1X || 740 par->chip == CHIP_362_TRIO3D_2X || 741 par->chip == CHIP_368_TRIO3D_2X || 742 par->chip == CHIP_365_TRIO3D || 743 par->chip == CHIP_375_VIRGE_DX || 744 par->chip == CHIP_385_VIRGE_GX || 745 par->chip == CHIP_260_VIRGE_MX) { 746 dbytes = info->var.xres * ((bpp+7)/8); 747 vga_wcrt(par->state.vgabase, 0x91, (dbytes + 7) / 8); 748 vga_wcrt(par->state.vgabase, 0x90, (((dbytes + 7) / 8) >> 8) | 0x80); 749 750 vga_wcrt(par->state.vgabase, 0x66, 0x81); 751 } 752 753 if (par->chip == CHIP_357_VIRGE_GX2 || 754 par->chip == CHIP_359_VIRGE_GX2P || 755 par->chip == CHIP_360_TRIO3D_1X || 756 par->chip == CHIP_362_TRIO3D_2X || 757 par->chip == CHIP_368_TRIO3D_2X || 758 par->chip == CHIP_260_VIRGE_MX) 759 vga_wcrt(par->state.vgabase, 0x34, 0x00); 760 else /* enable Data Transfer Position Control (DTPC) */ 761 vga_wcrt(par->state.vgabase, 0x34, 0x10); 762 763 svga_wcrt_mask(par->state.vgabase, 0x31, 0x00, 0x40); 764 multiplex = 0; 765 hmul = 1; 766 767 /* Set mode-specific register values */ 768 switch (mode) { 769 case 0: 770 fb_dbg(info, "text mode\n"); 771 svga_set_textmode_vga_regs(par->state.vgabase); 772 773 /* Set additional registers like in 8-bit mode */ 774 svga_wcrt_mask(par->state.vgabase, 0x50, 0x00, 0x30); 775 svga_wcrt_mask(par->state.vgabase, 0x67, 0x00, 0xF0); 776 777 /* Disable enhanced mode */ 778 svga_wcrt_mask(par->state.vgabase, 0x3A, 0x00, 0x30); 779 780 if (fasttext) { 781 fb_dbg(info, "high speed text mode set\n"); 782 svga_wcrt_mask(par->state.vgabase, 0x31, 0x40, 0x40); 783 } 784 break; 785 case 1: 786 fb_dbg(info, "4 bit pseudocolor\n"); 787 vga_wgfx(par->state.vgabase, VGA_GFX_MODE, 0x40); 788 789 /* Set additional registers like in 8-bit mode */ 790 svga_wcrt_mask(par->state.vgabase, 0x50, 0x00, 0x30); 791 svga_wcrt_mask(par->state.vgabase, 0x67, 0x00, 0xF0); 792 793 /* disable enhanced mode */ 794 svga_wcrt_mask(par->state.vgabase, 0x3A, 0x00, 0x30); 795 break; 796 case 2: 797 fb_dbg(info, "4 bit pseudocolor, planar\n"); 798 799 /* Set additional registers like in 8-bit mode */ 800 svga_wcrt_mask(par->state.vgabase, 0x50, 0x00, 0x30); 801 svga_wcrt_mask(par->state.vgabase, 0x67, 0x00, 0xF0); 802 803 /* disable enhanced mode */ 804 svga_wcrt_mask(par->state.vgabase, 0x3A, 0x00, 0x30); 805 break; 806 case 3: 807 fb_dbg(info, "8 bit pseudocolor\n"); 808 svga_wcrt_mask(par->state.vgabase, 0x50, 0x00, 0x30); 809 if (info->var.pixclock > 20000 || 810 par->chip == CHIP_357_VIRGE_GX2 || 811 par->chip == CHIP_359_VIRGE_GX2P || 812 par->chip == CHIP_360_TRIO3D_1X || 813 par->chip == CHIP_362_TRIO3D_2X || 814 par->chip == CHIP_368_TRIO3D_2X || 815 par->chip == CHIP_260_VIRGE_MX) 816 svga_wcrt_mask(par->state.vgabase, 0x67, 0x00, 0xF0); 817 else { 818 svga_wcrt_mask(par->state.vgabase, 0x67, 0x10, 0xF0); 819 multiplex = 1; 820 } 821 break; 822 case 4: 823 fb_dbg(info, "5/5/5 truecolor\n"); 824 if (par->chip == CHIP_988_VIRGE_VX) { 825 if (info->var.pixclock > 20000) 826 svga_wcrt_mask(par->state.vgabase, 0x67, 0x20, 0xF0); 827 else 828 svga_wcrt_mask(par->state.vgabase, 0x67, 0x30, 0xF0); 829 } else if (par->chip == CHIP_365_TRIO3D) { 830 svga_wcrt_mask(par->state.vgabase, 0x50, 0x10, 0x30); 831 if (info->var.pixclock > 8695) { 832 svga_wcrt_mask(par->state.vgabase, 0x67, 0x30, 0xF0); 833 hmul = 2; 834 } else { 835 svga_wcrt_mask(par->state.vgabase, 0x67, 0x20, 0xF0); 836 multiplex = 1; 837 } 838 } else { 839 svga_wcrt_mask(par->state.vgabase, 0x50, 0x10, 0x30); 840 svga_wcrt_mask(par->state.vgabase, 0x67, 0x30, 0xF0); 841 if (par->chip != CHIP_357_VIRGE_GX2 && 842 par->chip != CHIP_359_VIRGE_GX2P && 843 par->chip != CHIP_360_TRIO3D_1X && 844 par->chip != CHIP_362_TRIO3D_2X && 845 par->chip != CHIP_368_TRIO3D_2X && 846 par->chip != CHIP_260_VIRGE_MX) 847 hmul = 2; 848 } 849 break; 850 case 5: 851 fb_dbg(info, "5/6/5 truecolor\n"); 852 if (par->chip == CHIP_988_VIRGE_VX) { 853 if (info->var.pixclock > 20000) 854 svga_wcrt_mask(par->state.vgabase, 0x67, 0x40, 0xF0); 855 else 856 svga_wcrt_mask(par->state.vgabase, 0x67, 0x50, 0xF0); 857 } else if (par->chip == CHIP_365_TRIO3D) { 858 svga_wcrt_mask(par->state.vgabase, 0x50, 0x10, 0x30); 859 if (info->var.pixclock > 8695) { 860 svga_wcrt_mask(par->state.vgabase, 0x67, 0x50, 0xF0); 861 hmul = 2; 862 } else { 863 svga_wcrt_mask(par->state.vgabase, 0x67, 0x40, 0xF0); 864 multiplex = 1; 865 } 866 } else { 867 svga_wcrt_mask(par->state.vgabase, 0x50, 0x10, 0x30); 868 svga_wcrt_mask(par->state.vgabase, 0x67, 0x50, 0xF0); 869 if (par->chip != CHIP_357_VIRGE_GX2 && 870 par->chip != CHIP_359_VIRGE_GX2P && 871 par->chip != CHIP_360_TRIO3D_1X && 872 par->chip != CHIP_362_TRIO3D_2X && 873 par->chip != CHIP_368_TRIO3D_2X && 874 par->chip != CHIP_260_VIRGE_MX) 875 hmul = 2; 876 } 877 break; 878 case 6: 879 /* VIRGE VX case */ 880 fb_dbg(info, "8/8/8 truecolor\n"); 881 svga_wcrt_mask(par->state.vgabase, 0x67, 0xD0, 0xF0); 882 break; 883 case 7: 884 fb_dbg(info, "8/8/8/8 truecolor\n"); 885 svga_wcrt_mask(par->state.vgabase, 0x50, 0x30, 0x30); 886 svga_wcrt_mask(par->state.vgabase, 0x67, 0xD0, 0xF0); 887 break; 888 default: 889 fb_err(info, "unsupported mode - bug\n"); 890 return -EINVAL; 891 } 892 893 if (par->chip != CHIP_988_VIRGE_VX) { 894 svga_wseq_mask(par->state.vgabase, 0x15, multiplex ? 0x10 : 0x00, 0x10); 895 svga_wseq_mask(par->state.vgabase, 0x18, multiplex ? 0x80 : 0x00, 0x80); 896 } 897 898 s3_set_pixclock(info, info->var.pixclock); 899 svga_set_timings(par->state.vgabase, &s3_timing_regs, &(info->var), hmul, 1, 900 (info->var.vmode & FB_VMODE_DOUBLE) ? 2 : 1, 901 (info->var.vmode & FB_VMODE_INTERLACED) ? 2 : 1, 902 hmul, info->node); 903 904 /* Set interlaced mode start/end register */ 905 htotal = info->var.xres + info->var.left_margin + info->var.right_margin + info->var.hsync_len; 906 htotal = ((htotal * hmul) / 8) - 5; 907 vga_wcrt(par->state.vgabase, 0x3C, (htotal + 1) / 2); 908 909 /* Set Data Transfer Position */ 910 hsstart = ((info->var.xres + info->var.right_margin) * hmul) / 8; 911 /* + 2 is needed for Virge/VX, does no harm on other cards */ 912 value = clamp((htotal + hsstart + 1) / 2 + 2, hsstart + 4, htotal + 1); 913 svga_wcrt_multi(par->state.vgabase, s3_dtpc_regs, value); 914 915 if (screen_size > info->screen_size) 916 screen_size = info->screen_size; 917 memset_io(info->screen_base, 0x00, screen_size); 918 /* Device and screen back on */ 919 svga_wcrt_mask(par->state.vgabase, 0x17, 0x80, 0x80); 920 svga_wseq_mask(par->state.vgabase, 0x01, 0x00, 0x20); 921 922 return 0; 923} 924 925/* Set a colour register */ 926 927static int s3fb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, 928 u_int transp, struct fb_info *fb) 929{ 930 switch (fb->var.bits_per_pixel) { 931 case 0: 932 case 4: 933 if (regno >= 16) 934 return -EINVAL; 935 936 if ((fb->var.bits_per_pixel == 4) && 937 (fb->var.nonstd == 0)) { 938 outb(0xF0, VGA_PEL_MSK); 939 outb(regno*16, VGA_PEL_IW); 940 } else { 941 outb(0x0F, VGA_PEL_MSK); 942 outb(regno, VGA_PEL_IW); 943 } 944 outb(red >> 10, VGA_PEL_D); 945 outb(green >> 10, VGA_PEL_D); 946 outb(blue >> 10, VGA_PEL_D); 947 break; 948 case 8: 949 if (regno >= 256) 950 return -EINVAL; 951 952 outb(0xFF, VGA_PEL_MSK); 953 outb(regno, VGA_PEL_IW); 954 outb(red >> 10, VGA_PEL_D); 955 outb(green >> 10, VGA_PEL_D); 956 outb(blue >> 10, VGA_PEL_D); 957 break; 958 case 16: 959 if (regno >= 16) 960 return 0; 961 962 if (fb->var.green.length == 5) 963 ((u32*)fb->pseudo_palette)[regno] = ((red & 0xF800) >> 1) | 964 ((green & 0xF800) >> 6) | ((blue & 0xF800) >> 11); 965 else if (fb->var.green.length == 6) 966 ((u32*)fb->pseudo_palette)[regno] = (red & 0xF800) | 967 ((green & 0xFC00) >> 5) | ((blue & 0xF800) >> 11); 968 else return -EINVAL; 969 break; 970 case 24: 971 case 32: 972 if (regno >= 16) 973 return 0; 974 975 ((u32*)fb->pseudo_palette)[regno] = ((red & 0xFF00) << 8) | 976 (green & 0xFF00) | ((blue & 0xFF00) >> 8); 977 break; 978 default: 979 return -EINVAL; 980 } 981 982 return 0; 983} 984 985 986/* Set the display blanking state */ 987 988static int s3fb_blank(int blank_mode, struct fb_info *info) 989{ 990 struct s3fb_info *par = info->par; 991 992 switch (blank_mode) { 993 case FB_BLANK_UNBLANK: 994 fb_dbg(info, "unblank\n"); 995 svga_wcrt_mask(par->state.vgabase, 0x56, 0x00, 0x06); 996 svga_wseq_mask(par->state.vgabase, 0x01, 0x00, 0x20); 997 break; 998 case FB_BLANK_NORMAL: 999 fb_dbg(info, "blank\n"); 1000 svga_wcrt_mask(par->state.vgabase, 0x56, 0x00, 0x06); 1001 svga_wseq_mask(par->state.vgabase, 0x01, 0x20, 0x20); 1002 break; 1003 case FB_BLANK_HSYNC_SUSPEND: 1004 fb_dbg(info, "hsync\n"); 1005 svga_wcrt_mask(par->state.vgabase, 0x56, 0x02, 0x06); 1006 svga_wseq_mask(par->state.vgabase, 0x01, 0x20, 0x20); 1007 break; 1008 case FB_BLANK_VSYNC_SUSPEND: 1009 fb_dbg(info, "vsync\n"); 1010 svga_wcrt_mask(par->state.vgabase, 0x56, 0x04, 0x06); 1011 svga_wseq_mask(par->state.vgabase, 0x01, 0x20, 0x20); 1012 break; 1013 case FB_BLANK_POWERDOWN: 1014 fb_dbg(info, "sync down\n"); 1015 svga_wcrt_mask(par->state.vgabase, 0x56, 0x06, 0x06); 1016 svga_wseq_mask(par->state.vgabase, 0x01, 0x20, 0x20); 1017 break; 1018 } 1019 1020 return 0; 1021} 1022 1023 1024/* Pan the display */ 1025 1026static int s3fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) 1027{ 1028 struct s3fb_info *par = info->par; 1029 unsigned int offset; 1030 1031 /* Calculate the offset */ 1032 if (info->var.bits_per_pixel == 0) { 1033 offset = (var->yoffset / 16) * (info->var.xres_virtual / 2) 1034 + (var->xoffset / 2); 1035 offset = offset >> 2; 1036 } else { 1037 offset = (var->yoffset * info->fix.line_length) + 1038 (var->xoffset * info->var.bits_per_pixel / 8); 1039 offset = offset >> 2; 1040 } 1041 1042 /* Set the offset */ 1043 svga_wcrt_multi(par->state.vgabase, s3_start_address_regs, offset); 1044 1045 return 0; 1046} 1047 1048/* ------------------------------------------------------------------------- */ 1049 1050/* Frame buffer operations */ 1051 1052static const struct fb_ops s3fb_ops = { 1053 .owner = THIS_MODULE, 1054 .fb_open = s3fb_open, 1055 .fb_release = s3fb_release, 1056 __FB_DEFAULT_IOMEM_OPS_RDWR, 1057 .fb_check_var = s3fb_check_var, 1058 .fb_set_par = s3fb_set_par, 1059 .fb_setcolreg = s3fb_setcolreg, 1060 .fb_blank = s3fb_blank, 1061 .fb_pan_display = s3fb_pan_display, 1062 .fb_fillrect = s3fb_fillrect, 1063 .fb_copyarea = cfb_copyarea, 1064 .fb_imageblit = s3fb_imageblit, 1065 __FB_DEFAULT_IOMEM_OPS_MMAP, 1066 .fb_get_caps = svga_get_caps, 1067}; 1068 1069/* ------------------------------------------------------------------------- */ 1070 1071static int s3_identification(struct s3fb_info *par) 1072{ 1073 int chip = par->chip; 1074 1075 if (chip == CHIP_XXX_TRIO) { 1076 u8 cr30 = vga_rcrt(par->state.vgabase, 0x30); 1077 u8 cr2e = vga_rcrt(par->state.vgabase, 0x2e); 1078 u8 cr2f = vga_rcrt(par->state.vgabase, 0x2f); 1079 1080 if ((cr30 == 0xE0) || (cr30 == 0xE1)) { 1081 if (cr2e == 0x10) 1082 return CHIP_732_TRIO32; 1083 if (cr2e == 0x11) { 1084 if (! (cr2f & 0x40)) 1085 return CHIP_764_TRIO64; 1086 else 1087 return CHIP_765_TRIO64VP; 1088 } 1089 } 1090 } 1091 1092 if (chip == CHIP_XXX_TRIO64V2_DXGX) { 1093 u8 cr6f = vga_rcrt(par->state.vgabase, 0x6f); 1094 1095 if (! (cr6f & 0x01)) 1096 return CHIP_775_TRIO64V2_DX; 1097 else 1098 return CHIP_785_TRIO64V2_GX; 1099 } 1100 1101 if (chip == CHIP_XXX_VIRGE_DXGX) { 1102 u8 cr6f = vga_rcrt(par->state.vgabase, 0x6f); 1103 1104 if (! (cr6f & 0x01)) 1105 return CHIP_375_VIRGE_DX; 1106 else 1107 return CHIP_385_VIRGE_GX; 1108 } 1109 1110 if (chip == CHIP_36X_TRIO3D_1X_2X) { 1111 switch (vga_rcrt(par->state.vgabase, 0x2f)) { 1112 case 0x00: 1113 return CHIP_360_TRIO3D_1X; 1114 case 0x01: 1115 return CHIP_362_TRIO3D_2X; 1116 case 0x02: 1117 return CHIP_368_TRIO3D_2X; 1118 } 1119 } 1120 1121 return CHIP_UNKNOWN; 1122} 1123 1124 1125/* PCI probe */ 1126 1127static int s3_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) 1128{ 1129 struct pci_bus_region bus_reg; 1130 struct resource vga_res; 1131 struct fb_info *info; 1132 struct s3fb_info *par; 1133 int rc; 1134 u8 regval, cr38, cr39; 1135 bool found = false; 1136 1137 /* Ignore secondary VGA device because there is no VGA arbitration */ 1138 if (! svga_primary_device(dev)) { 1139 dev_info(&(dev->dev), "ignoring secondary device\n"); 1140 return -ENODEV; 1141 } 1142 1143 rc = aperture_remove_conflicting_pci_devices(dev, "s3fb"); 1144 if (rc) 1145 return rc; 1146 1147 /* Allocate and fill driver data structure */ 1148 info = framebuffer_alloc(sizeof(struct s3fb_info), &(dev->dev)); 1149 if (!info) 1150 return -ENOMEM; 1151 1152 par = info->par; 1153 mutex_init(&par->open_lock); 1154 1155 info->flags = FBINFO_PARTIAL_PAN_OK | FBINFO_HWACCEL_YPAN; 1156 info->fbops = &s3fb_ops; 1157 1158 /* Prepare PCI device */ 1159 rc = pci_enable_device(dev); 1160 if (rc < 0) { 1161 dev_err(info->device, "cannot enable PCI device\n"); 1162 goto err_enable_device; 1163 } 1164 1165 rc = pci_request_regions(dev, "s3fb"); 1166 if (rc < 0) { 1167 dev_err(info->device, "cannot reserve framebuffer region\n"); 1168 goto err_request_regions; 1169 } 1170 1171 1172 info->fix.smem_start = pci_resource_start(dev, 0); 1173 info->fix.smem_len = pci_resource_len(dev, 0); 1174 1175 /* Map physical IO memory address into kernel space */ 1176 info->screen_base = pci_iomap_wc(dev, 0, 0); 1177 if (! info->screen_base) { 1178 rc = -ENOMEM; 1179 dev_err(info->device, "iomap for framebuffer failed\n"); 1180 goto err_iomap; 1181 } 1182 1183 bus_reg.start = 0; 1184 bus_reg.end = 64 * 1024; 1185 1186 vga_res.flags = IORESOURCE_IO; 1187 1188 pcibios_bus_to_resource(dev->bus, &vga_res, &bus_reg); 1189 1190 par->state.vgabase = (void __iomem *) (unsigned long) vga_res.start; 1191 1192 /* Unlock regs */ 1193 cr38 = vga_rcrt(par->state.vgabase, 0x38); 1194 cr39 = vga_rcrt(par->state.vgabase, 0x39); 1195 vga_wseq(par->state.vgabase, 0x08, 0x06); 1196 vga_wcrt(par->state.vgabase, 0x38, 0x48); 1197 vga_wcrt(par->state.vgabase, 0x39, 0xA5); 1198 1199 /* Identify chip type */ 1200 par->chip = id->driver_data & CHIP_MASK; 1201 par->rev = vga_rcrt(par->state.vgabase, 0x2f); 1202 if (par->chip & CHIP_UNDECIDED_FLAG) 1203 par->chip = s3_identification(par); 1204 1205 /* Find how many physical memory there is on card */ 1206 /* 0x36 register is accessible even if other registers are locked */ 1207 regval = vga_rcrt(par->state.vgabase, 0x36); 1208 if (par->chip == CHIP_360_TRIO3D_1X || 1209 par->chip == CHIP_362_TRIO3D_2X || 1210 par->chip == CHIP_368_TRIO3D_2X || 1211 par->chip == CHIP_365_TRIO3D) { 1212 switch ((regval & 0xE0) >> 5) { 1213 case 0: /* 8MB -- only 4MB usable for display */ 1214 case 1: /* 4MB with 32-bit bus */ 1215 case 2: /* 4MB */ 1216 info->screen_size = 4 << 20; 1217 break; 1218 case 4: /* 2MB on 365 Trio3D */ 1219 case 6: /* 2MB */ 1220 info->screen_size = 2 << 20; 1221 break; 1222 } 1223 } else if (par->chip == CHIP_357_VIRGE_GX2 || 1224 par->chip == CHIP_359_VIRGE_GX2P || 1225 par->chip == CHIP_260_VIRGE_MX) { 1226 switch ((regval & 0xC0) >> 6) { 1227 case 1: /* 4MB */ 1228 info->screen_size = 4 << 20; 1229 break; 1230 case 3: /* 2MB */ 1231 info->screen_size = 2 << 20; 1232 break; 1233 } 1234 } else if (par->chip == CHIP_988_VIRGE_VX) { 1235 switch ((regval & 0x60) >> 5) { 1236 case 0: /* 2MB */ 1237 info->screen_size = 2 << 20; 1238 break; 1239 case 1: /* 4MB */ 1240 info->screen_size = 4 << 20; 1241 break; 1242 case 2: /* 6MB */ 1243 info->screen_size = 6 << 20; 1244 break; 1245 case 3: /* 8MB */ 1246 info->screen_size = 8 << 20; 1247 break; 1248 } 1249 /* off-screen memory */ 1250 regval = vga_rcrt(par->state.vgabase, 0x37); 1251 switch ((regval & 0x60) >> 5) { 1252 case 1: /* 4MB */ 1253 info->screen_size -= 4 << 20; 1254 break; 1255 case 2: /* 2MB */ 1256 info->screen_size -= 2 << 20; 1257 break; 1258 } 1259 } else 1260 info->screen_size = s3_memsizes[regval >> 5] << 10; 1261 info->fix.smem_len = info->screen_size; 1262 1263 /* Find MCLK frequency */ 1264 regval = vga_rseq(par->state.vgabase, 0x10); 1265 par->mclk_freq = ((vga_rseq(par->state.vgabase, 0x11) + 2) * 14318) / ((regval & 0x1F) + 2); 1266 par->mclk_freq = par->mclk_freq >> (regval >> 5); 1267 1268 /* Restore locks */ 1269 vga_wcrt(par->state.vgabase, 0x38, cr38); 1270 vga_wcrt(par->state.vgabase, 0x39, cr39); 1271 1272 strcpy(info->fix.id, s3_names [par->chip]); 1273 info->fix.mmio_start = 0; 1274 info->fix.mmio_len = 0; 1275 info->fix.type = FB_TYPE_PACKED_PIXELS; 1276 info->fix.visual = FB_VISUAL_PSEUDOCOLOR; 1277 info->fix.ypanstep = 0; 1278 info->fix.accel = FB_ACCEL_NONE; 1279 info->pseudo_palette = (void*) (par->pseudo_palette); 1280 info->var.bits_per_pixel = 8; 1281 1282#ifdef CONFIG_FB_S3_DDC 1283 /* Enable MMIO if needed */ 1284 if (s3fb_ddc_needs_mmio(par->chip)) { 1285 par->mmio = ioremap(info->fix.smem_start + MMIO_OFFSET, MMIO_SIZE); 1286 if (par->mmio) 1287 svga_wcrt_mask(par->state.vgabase, 0x53, 0x08, 0x08); /* enable MMIO */ 1288 else 1289 dev_err(info->device, "unable to map MMIO at 0x%lx, disabling DDC", 1290 info->fix.smem_start + MMIO_OFFSET); 1291 } 1292 if (!s3fb_ddc_needs_mmio(par->chip) || par->mmio) 1293 if (s3fb_setup_ddc_bus(info) == 0) { 1294 u8 *edid = fb_ddc_read(&par->ddc_adapter); 1295 par->ddc_registered = true; 1296 if (edid) { 1297 fb_edid_to_monspecs(edid, &info->monspecs); 1298 kfree(edid); 1299 if (!info->monspecs.modedb) 1300 dev_err(info->device, "error getting mode database\n"); 1301 else { 1302 const struct fb_videomode *m; 1303 1304 fb_videomode_to_modelist(info->monspecs.modedb, 1305 info->monspecs.modedb_len, 1306 &info->modelist); 1307 m = fb_find_best_display(&info->monspecs, &info->modelist); 1308 if (m) { 1309 fb_videomode_to_var(&info->var, m); 1310 /* fill all other info->var's fields */ 1311 if (s3fb_check_var(&info->var, info) == 0) 1312 found = true; 1313 } 1314 } 1315 } 1316 } 1317#endif 1318 if (!mode_option && !found) 1319 mode_option = "640x480-8@60"; 1320 1321 /* Prepare startup mode */ 1322 if (mode_option) { 1323 rc = fb_find_mode(&info->var, info, mode_option, 1324 info->monspecs.modedb, info->monspecs.modedb_len, 1325 NULL, info->var.bits_per_pixel); 1326 if (!rc || rc == 4) { 1327 rc = -EINVAL; 1328 dev_err(info->device, "mode %s not found\n", mode_option); 1329 fb_destroy_modedb(info->monspecs.modedb); 1330 info->monspecs.modedb = NULL; 1331 goto err_find_mode; 1332 } 1333 } 1334 1335 fb_destroy_modedb(info->monspecs.modedb); 1336 info->monspecs.modedb = NULL; 1337 1338 /* maximize virtual vertical size for fast scrolling */ 1339 info->var.yres_virtual = info->fix.smem_len * 8 / 1340 (info->var.bits_per_pixel * info->var.xres_virtual); 1341 if (info->var.yres_virtual < info->var.yres) { 1342 dev_err(info->device, "virtual vertical size smaller than real\n"); 1343 rc = -EINVAL; 1344 goto err_find_mode; 1345 } 1346 1347 rc = fb_alloc_cmap(&info->cmap, 256, 0); 1348 if (rc < 0) { 1349 dev_err(info->device, "cannot allocate colormap\n"); 1350 goto err_alloc_cmap; 1351 } 1352 1353 rc = register_framebuffer(info); 1354 if (rc < 0) { 1355 dev_err(info->device, "cannot register framebuffer\n"); 1356 goto err_reg_fb; 1357 } 1358 1359 fb_info(info, "%s on %s, %d MB RAM, %d MHz MCLK\n", 1360 info->fix.id, pci_name(dev), 1361 info->fix.smem_len >> 20, (par->mclk_freq + 500) / 1000); 1362 1363 if (par->chip == CHIP_UNKNOWN) 1364 fb_info(info, "unknown chip, CR2D=%x, CR2E=%x, CRT2F=%x, CRT30=%x\n", 1365 vga_rcrt(par->state.vgabase, 0x2d), 1366 vga_rcrt(par->state.vgabase, 0x2e), 1367 vga_rcrt(par->state.vgabase, 0x2f), 1368 vga_rcrt(par->state.vgabase, 0x30)); 1369 1370 /* Record a reference to the driver data */ 1371 pci_set_drvdata(dev, info); 1372 1373 if (mtrr) 1374 par->wc_cookie = arch_phys_wc_add(info->fix.smem_start, 1375 info->fix.smem_len); 1376 1377 return 0; 1378 1379 /* Error handling */ 1380err_reg_fb: 1381 fb_dealloc_cmap(&info->cmap); 1382err_alloc_cmap: 1383err_find_mode: 1384#ifdef CONFIG_FB_S3_DDC 1385 if (par->ddc_registered) 1386 i2c_del_adapter(&par->ddc_adapter); 1387 if (par->mmio) 1388 iounmap(par->mmio); 1389#endif 1390 pci_iounmap(dev, info->screen_base); 1391err_iomap: 1392 pci_release_regions(dev); 1393err_request_regions: 1394/* pci_disable_device(dev); */ 1395err_enable_device: 1396 framebuffer_release(info); 1397 return rc; 1398} 1399 1400 1401/* PCI remove */ 1402 1403static void s3_pci_remove(struct pci_dev *dev) 1404{ 1405 struct fb_info *info = pci_get_drvdata(dev); 1406 struct s3fb_info __maybe_unused *par; 1407 1408 if (info) { 1409 par = info->par; 1410 arch_phys_wc_del(par->wc_cookie); 1411 unregister_framebuffer(info); 1412 fb_dealloc_cmap(&info->cmap); 1413 1414#ifdef CONFIG_FB_S3_DDC 1415 if (par->ddc_registered) 1416 i2c_del_adapter(&par->ddc_adapter); 1417 if (par->mmio) 1418 iounmap(par->mmio); 1419#endif 1420 1421 pci_iounmap(dev, info->screen_base); 1422 pci_release_regions(dev); 1423/* pci_disable_device(dev); */ 1424 1425 framebuffer_release(info); 1426 } 1427} 1428 1429/* PCI suspend */ 1430 1431static int __maybe_unused s3_pci_suspend(struct device *dev) 1432{ 1433 struct fb_info *info = dev_get_drvdata(dev); 1434 struct s3fb_info *par = info->par; 1435 1436 dev_info(info->device, "suspend\n"); 1437 1438 console_lock(); 1439 mutex_lock(&(par->open_lock)); 1440 1441 if (par->ref_count == 0) { 1442 mutex_unlock(&(par->open_lock)); 1443 console_unlock(); 1444 return 0; 1445 } 1446 1447 fb_set_suspend(info, 1); 1448 1449 mutex_unlock(&(par->open_lock)); 1450 console_unlock(); 1451 1452 return 0; 1453} 1454 1455 1456/* PCI resume */ 1457 1458static int __maybe_unused s3_pci_resume(struct device *dev) 1459{ 1460 struct fb_info *info = dev_get_drvdata(dev); 1461 struct s3fb_info *par = info->par; 1462 1463 dev_info(info->device, "resume\n"); 1464 1465 console_lock(); 1466 mutex_lock(&(par->open_lock)); 1467 1468 if (par->ref_count == 0) { 1469 mutex_unlock(&(par->open_lock)); 1470 console_unlock(); 1471 return 0; 1472 } 1473 1474 s3fb_set_par(info); 1475 fb_set_suspend(info, 0); 1476 1477 mutex_unlock(&(par->open_lock)); 1478 console_unlock(); 1479 1480 return 0; 1481} 1482 1483static const struct dev_pm_ops s3_pci_pm_ops = { 1484#ifdef CONFIG_PM_SLEEP 1485 .suspend = s3_pci_suspend, 1486 .resume = s3_pci_resume, 1487 .freeze = NULL, 1488 .thaw = s3_pci_resume, 1489 .poweroff = s3_pci_suspend, 1490 .restore = s3_pci_resume, 1491#endif 1492}; 1493 1494/* List of boards that we are trying to support */ 1495 1496static const struct pci_device_id s3_devices[] = { 1497 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8810), .driver_data = CHIP_XXX_TRIO}, 1498 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8811), .driver_data = CHIP_XXX_TRIO}, 1499 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8812), .driver_data = CHIP_M65_AURORA64VP}, 1500 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8814), .driver_data = CHIP_767_TRIO64UVP}, 1501 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8901), .driver_data = CHIP_XXX_TRIO64V2_DXGX}, 1502 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8902), .driver_data = CHIP_551_PLATO_PX}, 1503 1504 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x5631), .driver_data = CHIP_325_VIRGE}, 1505 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x883D), .driver_data = CHIP_988_VIRGE_VX}, 1506 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A01), .driver_data = CHIP_XXX_VIRGE_DXGX}, 1507 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A10), .driver_data = CHIP_357_VIRGE_GX2}, 1508 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A11), .driver_data = CHIP_359_VIRGE_GX2P}, 1509 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A12), .driver_data = CHIP_359_VIRGE_GX2P}, 1510 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8A13), .driver_data = CHIP_36X_TRIO3D_1X_2X}, 1511 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8904), .driver_data = CHIP_365_TRIO3D}, 1512 {PCI_DEVICE(PCI_VENDOR_ID_S3, 0x8C01), .driver_data = CHIP_260_VIRGE_MX}, 1513 1514 {0, 0, 0, 0, 0, 0, 0} 1515}; 1516 1517 1518MODULE_DEVICE_TABLE(pci, s3_devices); 1519 1520static struct pci_driver s3fb_pci_driver = { 1521 .name = "s3fb", 1522 .id_table = s3_devices, 1523 .probe = s3_pci_probe, 1524 .remove = s3_pci_remove, 1525 .driver.pm = &s3_pci_pm_ops, 1526}; 1527 1528/* Parse user specified options */ 1529 1530#ifndef MODULE 1531static int __init s3fb_setup(char *options) 1532{ 1533 char *opt; 1534 1535 if (!options || !*options) 1536 return 0; 1537 1538 while ((opt = strsep(&options, ",")) != NULL) { 1539 1540 if (!*opt) 1541 continue; 1542 else if (!strncmp(opt, "mtrr:", 5)) 1543 mtrr = simple_strtoul(opt + 5, NULL, 0); 1544 else if (!strncmp(opt, "fasttext:", 9)) 1545 fasttext = simple_strtoul(opt + 9, NULL, 0); 1546 else 1547 mode_option = opt; 1548 } 1549 1550 return 0; 1551} 1552#endif 1553 1554/* Cleanup */ 1555 1556static void __exit s3fb_cleanup(void) 1557{ 1558 pr_debug("s3fb: cleaning up\n"); 1559 pci_unregister_driver(&s3fb_pci_driver); 1560} 1561 1562/* Driver Initialisation */ 1563 1564static int __init s3fb_init(void) 1565{ 1566 1567#ifndef MODULE 1568 char *option = NULL; 1569#endif 1570 1571 if (fb_modesetting_disabled("s3fb")) 1572 return -ENODEV; 1573 1574#ifndef MODULE 1575 if (fb_get_options("s3fb", &option)) 1576 return -ENODEV; 1577 s3fb_setup(option); 1578#endif 1579 1580 pr_debug("s3fb: initializing\n"); 1581 return pci_register_driver(&s3fb_pci_driver); 1582} 1583 1584/* ------------------------------------------------------------------------- */ 1585 1586/* Modularization */ 1587 1588module_init(s3fb_init); 1589module_exit(s3fb_cleanup); 1590