1 /*-*- linux-c -*- 2 * linux/drivers/video/i810_main.c -- Intel 810 frame buffer device 3 * 4 * Copyright (C) 2001 Antonino Daplas<adaplas@pol.net> 5 * All Rights Reserved 6 * 7 * Contributors: 8 * Michael Vogt <mvogt@acm.org> - added support for Intel 815 chipsets 9 * and enabling the power-on state of 10 * external VGA connectors for 11 * secondary displays 12 * 13 * Fredrik Andersson <krueger@shell.linux.se> - alpha testing of 14 * the VESA GTF 15 * 16 * Brad Corrion <bcorrion@web-co.com> - alpha testing of customized 17 * timings support 18 * 19 * The code framework is a modification of vfb.c by Geert Uytterhoeven. 20 * DotClock and PLL calculations are partly based on i810_driver.c 21 * in xfree86 v4.0.3 by Precision Insight. 22 * Watermark calculation and tables are based on i810_wmark.c 23 * in xfre86 v4.0.3 by Precision Insight. Slight modifications 24 * only to allow for integer operations instead of floating point. 25 * 26 * This file is subject to the terms and conditions of the GNU General Public 27 * License. See the file COPYING in the main directory of this archive for 28 * more details. 29 */ 30 31 #include <linux/aperture.h> 32 #include <linux/module.h> 33 #include <linux/kernel.h> 34 #include <linux/errno.h> 35 #include <linux/string.h> 36 #include <linux/mm.h> 37 #include <linux/slab.h> 38 #include <linux/fb.h> 39 #include <linux/init.h> 40 #include <linux/pci.h> 41 #include <linux/pci_ids.h> 42 #include <linux/resource.h> 43 #include <linux/unistd.h> 44 #include <linux/console.h> 45 #include <linux/io.h> 46 47 #include <asm/io.h> 48 #include <asm/div64.h> 49 #include <asm/page.h> 50 51 #include "i810_regs.h" 52 #include "i810.h" 53 #include "i810_main.h" 54 55 /* 56 * voffset - framebuffer offset in MiB from aperture start address. In order for 57 * the driver to work with X, we must try to use memory holes left untouched by X. The 58 * following table lists where X's different surfaces start at. 59 * 60 * --------------------------------------------- 61 * : : 64 MiB : 32 MiB : 62 * ---------------------------------------------- 63 * : FrontBuffer : 0 : 0 : 64 * : DepthBuffer : 48 : 16 : 65 * : BackBuffer : 56 : 24 : 66 * ---------------------------------------------- 67 * 68 * So for chipsets with 64 MiB Aperture sizes, 32 MiB for v_offset is okay, allowing up to 69 * 15 + 1 MiB of Framebuffer memory. For 32 MiB Aperture sizes, a v_offset of 8 MiB should 70 * work, allowing 7 + 1 MiB of Framebuffer memory. 71 * Note, the size of the hole may change depending on how much memory you allocate to X, 72 * and how the memory is split up between these surfaces. 73 * 74 * Note: Anytime the DepthBuffer or FrontBuffer is overlapped, X would still run but with 75 * DRI disabled. But if the Frontbuffer is overlapped, X will fail to load. 76 * 77 * Experiment with v_offset to find out which works best for you. 78 */ 79 static u32 v_offset_default; /* For 32 MiB Aper size, 8 should be the default */ 80 static u32 voffset; 81 82 static int i810fb_cursor(struct fb_info *info, struct fb_cursor *cursor); 83 static int i810fb_init_pci(struct pci_dev *dev, 84 const struct pci_device_id *entry); 85 static void i810fb_remove_pci(struct pci_dev *dev); 86 static int i810fb_resume(struct pci_dev *dev); 87 static int i810fb_suspend(struct pci_dev *dev, pm_message_t state); 88 89 /* Chipset Specific Functions */ 90 static int i810fb_set_par (struct fb_info *info); 91 static int i810fb_getcolreg (u8 regno, u8 *red, u8 *green, u8 *blue, 92 u8 *transp, struct fb_info *info); 93 static int i810fb_setcolreg (unsigned regno, unsigned red, unsigned green, unsigned blue, 94 unsigned transp, struct fb_info *info); 95 static int i810fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info); 96 static int i810fb_blank (int blank_mode, struct fb_info *info); 97 98 /* Initialization */ 99 static void i810fb_release_resource (struct fb_info *info, struct i810fb_par *par); 100 101 /* PCI */ 102 static const char * const i810_pci_list[] = { 103 "Intel(R) 810 Framebuffer Device" , 104 "Intel(R) 810-DC100 Framebuffer Device" , 105 "Intel(R) 810E Framebuffer Device" , 106 "Intel(R) 815 (Internal Graphics 100Mhz FSB) Framebuffer Device" , 107 "Intel(R) 815 (Internal Graphics only) Framebuffer Device" , 108 "Intel(R) 815 (Internal Graphics with AGP) Framebuffer Device" 109 }; 110 111 static const struct pci_device_id i810fb_pci_tbl[] = { 112 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82810_IG1, 113 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, 114 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82810_IG3, 115 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 }, 116 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82810E_IG, 117 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 }, 118 /* mvo: added i815 PCI-ID */ 119 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82815_100, 120 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 }, 121 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82815_NOAGP, 122 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 }, 123 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82815_CGC, 124 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 }, 125 { 0 }, 126 }; 127 128 static struct pci_driver i810fb_driver = { 129 .name = "i810fb", 130 .id_table = i810fb_pci_tbl, 131 .probe = i810fb_init_pci, 132 .remove = i810fb_remove_pci, 133 .suspend = i810fb_suspend, 134 .resume = i810fb_resume, 135 }; 136 137 static char *mode_option = NULL; 138 static int vram = 4; 139 static int bpp = 8; 140 static bool mtrr; 141 static bool accel; 142 static int hsync1; 143 static int hsync2; 144 static int vsync1; 145 static int vsync2; 146 static int xres; 147 static int yres; 148 static int vyres; 149 static bool sync; 150 static bool extvga; 151 static bool dcolor; 152 static bool ddc3; 153 154 /*------------------------------------------------------------*/ 155 156 /************************************************************** 157 * Hardware Low Level Routines * 158 **************************************************************/ 159 160 /** 161 * i810_screen_off - turns off/on display 162 * @mmio: address of register space 163 * @mode: on or off 164 * 165 * DESCRIPTION: 166 * Blanks/unblanks the display 167 */ i810_screen_off(u8 __iomem * mmio,u8 mode)168 static void i810_screen_off(u8 __iomem *mmio, u8 mode) 169 { 170 u32 count = WAIT_COUNT; 171 u8 val; 172 173 i810_writeb(SR_INDEX, mmio, SR01); 174 val = i810_readb(SR_DATA, mmio); 175 val = (mode == OFF) ? val | SCR_OFF : 176 val & ~SCR_OFF; 177 178 while((i810_readw(DISP_SL, mmio) & 0xFFF) && count--); 179 i810_writeb(SR_INDEX, mmio, SR01); 180 i810_writeb(SR_DATA, mmio, val); 181 } 182 183 /** 184 * i810_dram_off - turns off/on dram refresh 185 * @mmio: address of register space 186 * @mode: on or off 187 * 188 * DESCRIPTION: 189 * Turns off DRAM refresh. Must be off for only 2 vsyncs 190 * before data becomes corrupt 191 */ i810_dram_off(u8 __iomem * mmio,u8 mode)192 static void i810_dram_off(u8 __iomem *mmio, u8 mode) 193 { 194 u8 val; 195 196 val = i810_readb(DRAMCH, mmio); 197 val &= DRAM_OFF; 198 val = (mode == OFF) ? val : val | DRAM_ON; 199 i810_writeb(DRAMCH, mmio, val); 200 } 201 202 /** 203 * i810_protect_regs - allows rw/ro mode of certain VGA registers 204 * @mmio: address of register space 205 * @mode: protect/unprotect 206 * 207 * DESCRIPTION: 208 * The IBM VGA standard allows protection of certain VGA registers. 209 * This will protect or unprotect them. 210 */ i810_protect_regs(u8 __iomem * mmio,int mode)211 static void i810_protect_regs(u8 __iomem *mmio, int mode) 212 { 213 u8 reg; 214 215 i810_writeb(CR_INDEX_CGA, mmio, CR11); 216 reg = i810_readb(CR_DATA_CGA, mmio); 217 reg = (mode == OFF) ? reg & ~0x80 : 218 reg | 0x80; 219 220 i810_writeb(CR_INDEX_CGA, mmio, CR11); 221 i810_writeb(CR_DATA_CGA, mmio, reg); 222 } 223 224 /** 225 * i810_load_pll - loads values for the hardware PLL clock 226 * @par: pointer to i810fb_par structure 227 * 228 * DESCRIPTION: 229 * Loads the P, M, and N registers. 230 */ i810_load_pll(struct i810fb_par * par)231 static void i810_load_pll(struct i810fb_par *par) 232 { 233 u32 tmp1, tmp2; 234 u8 __iomem *mmio = par->mmio_start_virtual; 235 236 tmp1 = par->regs.M | par->regs.N << 16; 237 tmp2 = i810_readl(DCLK_2D, mmio); 238 tmp2 &= ~MN_MASK; 239 i810_writel(DCLK_2D, mmio, tmp1 | tmp2); 240 241 tmp1 = par->regs.P; 242 tmp2 = i810_readl(DCLK_0DS, mmio); 243 tmp2 &= ~(P_OR << 16); 244 i810_writel(DCLK_0DS, mmio, (tmp1 << 16) | tmp2); 245 246 i810_writeb(MSR_WRITE, mmio, par->regs.msr | 0xC8 | 1); 247 248 } 249 250 /** 251 * i810_load_vga - load standard VGA registers 252 * @par: pointer to i810fb_par structure 253 * 254 * DESCRIPTION: 255 * Load values to VGA registers 256 */ i810_load_vga(struct i810fb_par * par)257 static void i810_load_vga(struct i810fb_par *par) 258 { 259 u8 __iomem *mmio = par->mmio_start_virtual; 260 261 /* interlace */ 262 i810_writeb(CR_INDEX_CGA, mmio, CR70); 263 i810_writeb(CR_DATA_CGA, mmio, par->interlace); 264 265 i810_writeb(CR_INDEX_CGA, mmio, CR00); 266 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr00); 267 i810_writeb(CR_INDEX_CGA, mmio, CR01); 268 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr01); 269 i810_writeb(CR_INDEX_CGA, mmio, CR02); 270 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr02); 271 i810_writeb(CR_INDEX_CGA, mmio, CR03); 272 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr03); 273 i810_writeb(CR_INDEX_CGA, mmio, CR04); 274 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr04); 275 i810_writeb(CR_INDEX_CGA, mmio, CR05); 276 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr05); 277 i810_writeb(CR_INDEX_CGA, mmio, CR06); 278 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr06); 279 i810_writeb(CR_INDEX_CGA, mmio, CR09); 280 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr09); 281 i810_writeb(CR_INDEX_CGA, mmio, CR10); 282 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr10); 283 i810_writeb(CR_INDEX_CGA, mmio, CR11); 284 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr11); 285 i810_writeb(CR_INDEX_CGA, mmio, CR12); 286 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr12); 287 i810_writeb(CR_INDEX_CGA, mmio, CR15); 288 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr15); 289 i810_writeb(CR_INDEX_CGA, mmio, CR16); 290 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr16); 291 } 292 293 /** 294 * i810_load_vgax - load extended VGA registers 295 * @par: pointer to i810fb_par structure 296 * 297 * DESCRIPTION: 298 * Load values to extended VGA registers 299 */ i810_load_vgax(struct i810fb_par * par)300 static void i810_load_vgax(struct i810fb_par *par) 301 { 302 u8 __iomem *mmio = par->mmio_start_virtual; 303 304 i810_writeb(CR_INDEX_CGA, mmio, CR30); 305 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr30); 306 i810_writeb(CR_INDEX_CGA, mmio, CR31); 307 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr31); 308 i810_writeb(CR_INDEX_CGA, mmio, CR32); 309 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr32); 310 i810_writeb(CR_INDEX_CGA, mmio, CR33); 311 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr33); 312 i810_writeb(CR_INDEX_CGA, mmio, CR35); 313 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr35); 314 i810_writeb(CR_INDEX_CGA, mmio, CR39); 315 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr39); 316 } 317 318 /** 319 * i810_load_2d - load grahics registers 320 * @par: pointer to i810fb_par structure 321 * 322 * DESCRIPTION: 323 * Load values to graphics registers 324 */ i810_load_2d(struct i810fb_par * par)325 static void i810_load_2d(struct i810fb_par *par) 326 { 327 u32 tmp; 328 u8 tmp8; 329 u8 __iomem *mmio = par->mmio_start_virtual; 330 331 i810_writel(FW_BLC, mmio, par->watermark); 332 tmp = i810_readl(PIXCONF, mmio); 333 tmp |= 1 | 1 << 20; 334 i810_writel(PIXCONF, mmio, tmp); 335 336 i810_writel(OVRACT, mmio, par->ovract); 337 338 i810_writeb(GR_INDEX, mmio, GR10); 339 tmp8 = i810_readb(GR_DATA, mmio); 340 tmp8 |= 2; 341 i810_writeb(GR_INDEX, mmio, GR10); 342 i810_writeb(GR_DATA, mmio, tmp8); 343 } 344 345 /** 346 * i810_hires - enables high resolution mode 347 * @mmio: address of register space 348 */ i810_hires(u8 __iomem * mmio)349 static void i810_hires(u8 __iomem *mmio) 350 { 351 u8 val; 352 353 i810_writeb(CR_INDEX_CGA, mmio, CR80); 354 val = i810_readb(CR_DATA_CGA, mmio); 355 i810_writeb(CR_INDEX_CGA, mmio, CR80); 356 i810_writeb(CR_DATA_CGA, mmio, val | 1); 357 /* Stop LCD displays from flickering */ 358 i810_writel(MEM_MODE, mmio, i810_readl(MEM_MODE, mmio) | 4); 359 } 360 361 /** 362 * i810_load_pitch - loads the characters per line of the display 363 * @par: pointer to i810fb_par structure 364 * 365 * DESCRIPTION: 366 * Loads the characters per line 367 */ i810_load_pitch(struct i810fb_par * par)368 static void i810_load_pitch(struct i810fb_par *par) 369 { 370 u32 tmp, pitch; 371 u8 val; 372 u8 __iomem *mmio = par->mmio_start_virtual; 373 374 pitch = par->pitch >> 3; 375 i810_writeb(SR_INDEX, mmio, SR01); 376 val = i810_readb(SR_DATA, mmio); 377 val &= 0xE0; 378 val |= 1 | 1 << 2; 379 i810_writeb(SR_INDEX, mmio, SR01); 380 i810_writeb(SR_DATA, mmio, val); 381 382 tmp = pitch & 0xFF; 383 i810_writeb(CR_INDEX_CGA, mmio, CR13); 384 i810_writeb(CR_DATA_CGA, mmio, (u8) tmp); 385 386 tmp = pitch >> 8; 387 i810_writeb(CR_INDEX_CGA, mmio, CR41); 388 val = i810_readb(CR_DATA_CGA, mmio) & ~0x0F; 389 i810_writeb(CR_INDEX_CGA, mmio, CR41); 390 i810_writeb(CR_DATA_CGA, mmio, (u8) tmp | val); 391 } 392 393 /** 394 * i810_load_color - loads the color depth of the display 395 * @par: pointer to i810fb_par structure 396 * 397 * DESCRIPTION: 398 * Loads the color depth of the display and the graphics engine 399 */ i810_load_color(struct i810fb_par * par)400 static void i810_load_color(struct i810fb_par *par) 401 { 402 u8 __iomem *mmio = par->mmio_start_virtual; 403 u32 reg1; 404 u16 reg2; 405 406 reg1 = i810_readl(PIXCONF, mmio) & ~(0xF0000 | 1 << 27); 407 reg2 = i810_readw(BLTCNTL, mmio) & ~0x30; 408 409 reg1 |= 0x8000 | par->pixconf; 410 reg2 |= par->bltcntl; 411 i810_writel(PIXCONF, mmio, reg1); 412 i810_writew(BLTCNTL, mmio, reg2); 413 } 414 415 /** 416 * i810_load_regs - loads all registers for the mode 417 * @par: pointer to i810fb_par structure 418 * 419 * DESCRIPTION: 420 * Loads registers 421 */ i810_load_regs(struct i810fb_par * par)422 static void i810_load_regs(struct i810fb_par *par) 423 { 424 u8 __iomem *mmio = par->mmio_start_virtual; 425 426 i810_screen_off(mmio, OFF); 427 i810_protect_regs(mmio, OFF); 428 i810_dram_off(mmio, OFF); 429 i810_load_pll(par); 430 i810_load_vga(par); 431 i810_load_vgax(par); 432 i810_dram_off(mmio, ON); 433 i810_load_2d(par); 434 i810_hires(mmio); 435 i810_screen_off(mmio, ON); 436 i810_protect_regs(mmio, ON); 437 i810_load_color(par); 438 i810_load_pitch(par); 439 } 440 i810_write_dac(u8 regno,u8 red,u8 green,u8 blue,u8 __iomem * mmio)441 static void i810_write_dac(u8 regno, u8 red, u8 green, u8 blue, 442 u8 __iomem *mmio) 443 { 444 i810_writeb(CLUT_INDEX_WRITE, mmio, regno); 445 i810_writeb(CLUT_DATA, mmio, red); 446 i810_writeb(CLUT_DATA, mmio, green); 447 i810_writeb(CLUT_DATA, mmio, blue); 448 } 449 i810_read_dac(u8 regno,u8 * red,u8 * green,u8 * blue,u8 __iomem * mmio)450 static void i810_read_dac(u8 regno, u8 *red, u8 *green, u8 *blue, 451 u8 __iomem *mmio) 452 { 453 i810_writeb(CLUT_INDEX_READ, mmio, regno); 454 *red = i810_readb(CLUT_DATA, mmio); 455 *green = i810_readb(CLUT_DATA, mmio); 456 *blue = i810_readb(CLUT_DATA, mmio); 457 } 458 459 /************************************************************ 460 * VGA State Restore * 461 ************************************************************/ i810_restore_pll(struct i810fb_par * par)462 static void i810_restore_pll(struct i810fb_par *par) 463 { 464 u32 tmp1, tmp2; 465 u8 __iomem *mmio = par->mmio_start_virtual; 466 467 tmp1 = par->hw_state.dclk_2d; 468 tmp2 = i810_readl(DCLK_2D, mmio); 469 tmp1 &= ~MN_MASK; 470 tmp2 &= MN_MASK; 471 i810_writel(DCLK_2D, mmio, tmp1 | tmp2); 472 473 tmp1 = par->hw_state.dclk_1d; 474 tmp2 = i810_readl(DCLK_1D, mmio); 475 tmp1 &= ~MN_MASK; 476 tmp2 &= MN_MASK; 477 i810_writel(DCLK_1D, mmio, tmp1 | tmp2); 478 479 i810_writel(DCLK_0DS, mmio, par->hw_state.dclk_0ds); 480 } 481 i810_restore_dac(struct i810fb_par * par)482 static void i810_restore_dac(struct i810fb_par *par) 483 { 484 u32 tmp1, tmp2; 485 u8 __iomem *mmio = par->mmio_start_virtual; 486 487 tmp1 = par->hw_state.pixconf; 488 tmp2 = i810_readl(PIXCONF, mmio); 489 tmp1 &= DAC_BIT; 490 tmp2 &= ~DAC_BIT; 491 i810_writel(PIXCONF, mmio, tmp1 | tmp2); 492 } 493 i810_restore_vgax(struct i810fb_par * par)494 static void i810_restore_vgax(struct i810fb_par *par) 495 { 496 u8 i, j; 497 u8 __iomem *mmio = par->mmio_start_virtual; 498 499 for (i = 0; i < 4; i++) { 500 i810_writeb(CR_INDEX_CGA, mmio, CR30+i); 501 i810_writeb(CR_DATA_CGA, mmio, *(&(par->hw_state.cr30) + i)); 502 } 503 i810_writeb(CR_INDEX_CGA, mmio, CR35); 504 i810_writeb(CR_DATA_CGA, mmio, par->hw_state.cr35); 505 i810_writeb(CR_INDEX_CGA, mmio, CR39); 506 i810_writeb(CR_DATA_CGA, mmio, par->hw_state.cr39); 507 i810_writeb(CR_INDEX_CGA, mmio, CR41); 508 i810_writeb(CR_DATA_CGA, mmio, par->hw_state.cr39); 509 510 /*restore interlace*/ 511 i810_writeb(CR_INDEX_CGA, mmio, CR70); 512 i = par->hw_state.cr70; 513 i &= INTERLACE_BIT; 514 j = i810_readb(CR_DATA_CGA, mmio); 515 i810_writeb(CR_INDEX_CGA, mmio, CR70); 516 i810_writeb(CR_DATA_CGA, mmio, j | i); 517 518 i810_writeb(CR_INDEX_CGA, mmio, CR80); 519 i810_writeb(CR_DATA_CGA, mmio, par->hw_state.cr80); 520 i810_writeb(MSR_WRITE, mmio, par->hw_state.msr); 521 i810_writeb(SR_INDEX, mmio, SR01); 522 i = (par->hw_state.sr01) & ~0xE0 ; 523 j = i810_readb(SR_DATA, mmio) & 0xE0; 524 i810_writeb(SR_INDEX, mmio, SR01); 525 i810_writeb(SR_DATA, mmio, i | j); 526 } 527 i810_restore_vga(struct i810fb_par * par)528 static void i810_restore_vga(struct i810fb_par *par) 529 { 530 u8 i; 531 u8 __iomem *mmio = par->mmio_start_virtual; 532 533 for (i = 0; i < 10; i++) { 534 i810_writeb(CR_INDEX_CGA, mmio, CR00 + i); 535 i810_writeb(CR_DATA_CGA, mmio, *((&par->hw_state.cr00) + i)); 536 } 537 for (i = 0; i < 8; i++) { 538 i810_writeb(CR_INDEX_CGA, mmio, CR10 + i); 539 i810_writeb(CR_DATA_CGA, mmio, *((&par->hw_state.cr10) + i)); 540 } 541 } 542 i810_restore_addr_map(struct i810fb_par * par)543 static void i810_restore_addr_map(struct i810fb_par *par) 544 { 545 u8 tmp; 546 u8 __iomem *mmio = par->mmio_start_virtual; 547 548 i810_writeb(GR_INDEX, mmio, GR10); 549 tmp = i810_readb(GR_DATA, mmio); 550 tmp &= ADDR_MAP_MASK; 551 tmp |= par->hw_state.gr10; 552 i810_writeb(GR_INDEX, mmio, GR10); 553 i810_writeb(GR_DATA, mmio, tmp); 554 } 555 i810_restore_2d(struct i810fb_par * par)556 static void i810_restore_2d(struct i810fb_par *par) 557 { 558 u32 tmp_long; 559 u16 tmp_word; 560 u8 __iomem *mmio = par->mmio_start_virtual; 561 562 tmp_word = i810_readw(BLTCNTL, mmio); 563 tmp_word &= ~(3 << 4); 564 tmp_word |= par->hw_state.bltcntl; 565 i810_writew(BLTCNTL, mmio, tmp_word); 566 567 i810_dram_off(mmio, OFF); 568 i810_writel(PIXCONF, mmio, par->hw_state.pixconf); 569 i810_dram_off(mmio, ON); 570 571 tmp_word = i810_readw(HWSTAM, mmio); 572 tmp_word &= 3 << 13; 573 tmp_word |= par->hw_state.hwstam; 574 i810_writew(HWSTAM, mmio, tmp_word); 575 576 tmp_long = i810_readl(FW_BLC, mmio); 577 tmp_long &= FW_BLC_MASK; 578 tmp_long |= par->hw_state.fw_blc; 579 i810_writel(FW_BLC, mmio, tmp_long); 580 581 i810_writel(HWS_PGA, mmio, par->hw_state.hws_pga); 582 i810_writew(IER, mmio, par->hw_state.ier); 583 i810_writew(IMR, mmio, par->hw_state.imr); 584 i810_writel(DPLYSTAS, mmio, par->hw_state.dplystas); 585 } 586 i810_restore_vga_state(struct i810fb_par * par)587 static void i810_restore_vga_state(struct i810fb_par *par) 588 { 589 u8 __iomem *mmio = par->mmio_start_virtual; 590 591 i810_screen_off(mmio, OFF); 592 i810_protect_regs(mmio, OFF); 593 i810_dram_off(mmio, OFF); 594 i810_restore_pll(par); 595 i810_restore_dac(par); 596 i810_restore_vga(par); 597 i810_restore_vgax(par); 598 i810_restore_addr_map(par); 599 i810_dram_off(mmio, ON); 600 i810_restore_2d(par); 601 i810_screen_off(mmio, ON); 602 i810_protect_regs(mmio, ON); 603 } 604 605 /*********************************************************************** 606 * VGA State Save * 607 ***********************************************************************/ 608 i810_save_vgax(struct i810fb_par * par)609 static void i810_save_vgax(struct i810fb_par *par) 610 { 611 u8 i; 612 u8 __iomem *mmio = par->mmio_start_virtual; 613 614 for (i = 0; i < 4; i++) { 615 i810_writeb(CR_INDEX_CGA, mmio, CR30 + i); 616 *(&(par->hw_state.cr30) + i) = i810_readb(CR_DATA_CGA, mmio); 617 } 618 i810_writeb(CR_INDEX_CGA, mmio, CR35); 619 par->hw_state.cr35 = i810_readb(CR_DATA_CGA, mmio); 620 i810_writeb(CR_INDEX_CGA, mmio, CR39); 621 par->hw_state.cr39 = i810_readb(CR_DATA_CGA, mmio); 622 i810_writeb(CR_INDEX_CGA, mmio, CR41); 623 par->hw_state.cr41 = i810_readb(CR_DATA_CGA, mmio); 624 i810_writeb(CR_INDEX_CGA, mmio, CR70); 625 par->hw_state.cr70 = i810_readb(CR_DATA_CGA, mmio); 626 par->hw_state.msr = i810_readb(MSR_READ, mmio); 627 i810_writeb(CR_INDEX_CGA, mmio, CR80); 628 par->hw_state.cr80 = i810_readb(CR_DATA_CGA, mmio); 629 i810_writeb(SR_INDEX, mmio, SR01); 630 par->hw_state.sr01 = i810_readb(SR_DATA, mmio); 631 } 632 i810_save_vga(struct i810fb_par * par)633 static void i810_save_vga(struct i810fb_par *par) 634 { 635 u8 i; 636 u8 __iomem *mmio = par->mmio_start_virtual; 637 638 for (i = 0; i < 10; i++) { 639 i810_writeb(CR_INDEX_CGA, mmio, CR00 + i); 640 *((&par->hw_state.cr00) + i) = i810_readb(CR_DATA_CGA, mmio); 641 } 642 for (i = 0; i < 8; i++) { 643 i810_writeb(CR_INDEX_CGA, mmio, CR10 + i); 644 *((&par->hw_state.cr10) + i) = i810_readb(CR_DATA_CGA, mmio); 645 } 646 } 647 i810_save_2d(struct i810fb_par * par)648 static void i810_save_2d(struct i810fb_par *par) 649 { 650 u8 __iomem *mmio = par->mmio_start_virtual; 651 652 par->hw_state.dclk_2d = i810_readl(DCLK_2D, mmio); 653 par->hw_state.dclk_1d = i810_readl(DCLK_1D, mmio); 654 par->hw_state.dclk_0ds = i810_readl(DCLK_0DS, mmio); 655 par->hw_state.pixconf = i810_readl(PIXCONF, mmio); 656 par->hw_state.fw_blc = i810_readl(FW_BLC, mmio); 657 par->hw_state.bltcntl = i810_readw(BLTCNTL, mmio); 658 par->hw_state.hwstam = i810_readw(HWSTAM, mmio); 659 par->hw_state.hws_pga = i810_readl(HWS_PGA, mmio); 660 par->hw_state.ier = i810_readw(IER, mmio); 661 par->hw_state.imr = i810_readw(IMR, mmio); 662 par->hw_state.dplystas = i810_readl(DPLYSTAS, mmio); 663 } 664 i810_save_vga_state(struct i810fb_par * par)665 static void i810_save_vga_state(struct i810fb_par *par) 666 { 667 i810_save_vga(par); 668 i810_save_vgax(par); 669 i810_save_2d(par); 670 } 671 672 /************************************************************ 673 * Helpers * 674 ************************************************************/ 675 /** 676 * get_line_length - calculates buffer pitch in bytes 677 * @par: pointer to i810fb_par structure 678 * @xres_virtual: virtual resolution of the frame 679 * @bpp: bits per pixel 680 * 681 * DESCRIPTION: 682 * Calculates buffer pitch in bytes. 683 */ get_line_length(struct i810fb_par * par,int xres_virtual,int bpp)684 static u32 get_line_length(struct i810fb_par *par, int xres_virtual, int bpp) 685 { 686 u32 length; 687 688 length = xres_virtual*bpp; 689 length = (length+31)&-32; 690 length >>= 3; 691 return length; 692 } 693 694 /** 695 * i810_calc_dclk - calculates the P, M, and N values of a pixelclock value 696 * @freq: target pixelclock in picoseconds 697 * @m: where to write M register 698 * @n: where to write N register 699 * @p: where to write P register 700 * 701 * DESCRIPTION: 702 * Based on the formula Freq_actual = (4*M*Freq_ref)/(N^P) 703 * Repeatedly computes the Freq until the actual Freq is equal to 704 * the target Freq or until the loop count is zero. In the latter 705 * case, the actual frequency nearest the target will be used. 706 */ i810_calc_dclk(u32 freq,u32 * m,u32 * n,u32 * p)707 static void i810_calc_dclk(u32 freq, u32 *m, u32 *n, u32 *p) 708 { 709 u32 m_reg, n_reg, p_divisor, n_target_max; 710 u32 m_target, n_target, p_target, n_best, m_best, mod; 711 u32 f_out, target_freq, diff = 0, mod_min, diff_min; 712 713 diff_min = mod_min = 0xFFFFFFFF; 714 n_best = m_best = m_target = f_out = 0; 715 716 target_freq = freq; 717 n_target_max = 30; 718 719 /* 720 * find P such that target freq is 16x reference freq (Hz). 721 */ 722 p_divisor = 1; 723 p_target = 0; 724 while(!((1000000 * p_divisor)/(16 * 24 * target_freq)) && 725 p_divisor <= 32) { 726 p_divisor <<= 1; 727 p_target++; 728 } 729 730 n_reg = m_reg = n_target = 3; 731 while (diff_min && mod_min && (n_target < n_target_max)) { 732 f_out = (p_divisor * n_reg * 1000000)/(4 * 24 * m_reg); 733 mod = (p_divisor * n_reg * 1000000) % (4 * 24 * m_reg); 734 m_target = m_reg; 735 n_target = n_reg; 736 if (f_out <= target_freq) { 737 n_reg++; 738 diff = target_freq - f_out; 739 } else { 740 m_reg++; 741 diff = f_out - target_freq; 742 } 743 744 if (diff_min > diff) { 745 diff_min = diff; 746 n_best = n_target; 747 m_best = m_target; 748 } 749 750 if (!diff && mod_min > mod) { 751 mod_min = mod; 752 n_best = n_target; 753 m_best = m_target; 754 } 755 } 756 if (m) *m = (m_best - 2) & 0x3FF; 757 if (n) *n = (n_best - 2) & 0x3FF; 758 if (p) *p = (p_target << 4); 759 } 760 761 /************************************************************* 762 * Hardware Cursor Routines * 763 *************************************************************/ 764 765 /** 766 * i810_enable_cursor - show or hide the hardware cursor 767 * @mmio: address of register space 768 * @mode: show (1) or hide (0) 769 * 770 * Description: 771 * Shows or hides the hardware cursor 772 */ i810_enable_cursor(u8 __iomem * mmio,int mode)773 static void i810_enable_cursor(u8 __iomem *mmio, int mode) 774 { 775 u32 temp; 776 777 temp = i810_readl(PIXCONF, mmio); 778 temp = (mode == ON) ? temp | CURSOR_ENABLE_MASK : 779 temp & ~CURSOR_ENABLE_MASK; 780 781 i810_writel(PIXCONF, mmio, temp); 782 } 783 i810_reset_cursor_image(struct i810fb_par * par)784 static void i810_reset_cursor_image(struct i810fb_par *par) 785 { 786 u8 __iomem *addr = par->cursor_heap.virtual; 787 int i, j; 788 789 for (i = 64; i--; ) { 790 for (j = 0; j < 8; j++) { 791 i810_writeb(j, addr, 0xff); 792 i810_writeb(j+8, addr, 0x00); 793 } 794 addr +=16; 795 } 796 } 797 i810_load_cursor_image(int width,int height,u8 * data,struct i810fb_par * par)798 static void i810_load_cursor_image(int width, int height, u8 *data, 799 struct i810fb_par *par) 800 { 801 u8 __iomem *addr = par->cursor_heap.virtual; 802 int i, j, w = width/8; 803 int mod = width % 8, t_mask, d_mask; 804 805 t_mask = 0xff >> mod; 806 d_mask = ~(0xff >> mod); 807 for (i = height; i--; ) { 808 for (j = 0; j < w; j++) { 809 i810_writeb(j+0, addr, 0x00); 810 i810_writeb(j+8, addr, *data++); 811 } 812 if (mod) { 813 i810_writeb(j+0, addr, t_mask); 814 i810_writeb(j+8, addr, *data++ & d_mask); 815 } 816 addr += 16; 817 } 818 } 819 i810_load_cursor_colors(int fg,int bg,struct fb_info * info)820 static void i810_load_cursor_colors(int fg, int bg, struct fb_info *info) 821 { 822 struct i810fb_par *par = info->par; 823 u8 __iomem *mmio = par->mmio_start_virtual; 824 u8 red, green, blue, trans, temp; 825 826 i810fb_getcolreg(bg, &red, &green, &blue, &trans, info); 827 828 temp = i810_readb(PIXCONF1, mmio); 829 i810_writeb(PIXCONF1, mmio, temp | EXTENDED_PALETTE); 830 831 i810_write_dac(4, red, green, blue, mmio); 832 833 i810_writeb(PIXCONF1, mmio, temp); 834 835 i810fb_getcolreg(fg, &red, &green, &blue, &trans, info); 836 temp = i810_readb(PIXCONF1, mmio); 837 i810_writeb(PIXCONF1, mmio, temp | EXTENDED_PALETTE); 838 839 i810_write_dac(5, red, green, blue, mmio); 840 841 i810_writeb(PIXCONF1, mmio, temp); 842 } 843 844 /** 845 * i810_init_cursor - initializes the cursor 846 * @par: pointer to i810fb_par structure 847 * 848 * DESCRIPTION: 849 * Initializes the cursor registers 850 */ i810_init_cursor(struct i810fb_par * par)851 static void i810_init_cursor(struct i810fb_par *par) 852 { 853 u8 __iomem *mmio = par->mmio_start_virtual; 854 855 i810_enable_cursor(mmio, OFF); 856 i810_writel(CURBASE, mmio, par->cursor_heap.physical); 857 i810_writew(CURCNTR, mmio, COORD_ACTIVE | CURSOR_MODE_64_XOR); 858 } 859 860 /********************************************************************* 861 * Framebuffer hook helpers * 862 *********************************************************************/ 863 /** 864 * i810_round_off - Round off values to capability of hardware 865 * @var: pointer to fb_var_screeninfo structure 866 * 867 * DESCRIPTION: 868 * @var contains user-defined information for the mode to be set. 869 * This will try modify those values to ones nearest the 870 * capability of the hardware 871 */ i810_round_off(struct fb_var_screeninfo * var)872 static void i810_round_off(struct fb_var_screeninfo *var) 873 { 874 u32 xres, yres, vxres, vyres; 875 876 /* 877 * Presently supports only these configurations 878 */ 879 880 xres = var->xres; 881 yres = var->yres; 882 vxres = var->xres_virtual; 883 vyres = var->yres_virtual; 884 885 var->bits_per_pixel += 7; 886 var->bits_per_pixel &= ~7; 887 888 if (var->bits_per_pixel < 8) 889 var->bits_per_pixel = 8; 890 if (var->bits_per_pixel > 32) 891 var->bits_per_pixel = 32; 892 893 round_off_xres(&xres); 894 if (xres < 40) 895 xres = 40; 896 if (xres > 2048) 897 xres = 2048; 898 xres = (xres + 7) & ~7; 899 900 if (vxres < xres) 901 vxres = xres; 902 903 round_off_yres(&xres, &yres); 904 if (yres < 1) 905 yres = 1; 906 if (yres >= 2048) 907 yres = 2048; 908 909 if (vyres < yres) 910 vyres = yres; 911 912 if (var->bits_per_pixel == 32) 913 var->accel_flags = 0; 914 915 /* round of horizontal timings to nearest 8 pixels */ 916 var->left_margin = (var->left_margin + 4) & ~7; 917 var->right_margin = (var->right_margin + 4) & ~7; 918 var->hsync_len = (var->hsync_len + 4) & ~7; 919 920 if (var->vmode & FB_VMODE_INTERLACED) { 921 if (!((yres + var->upper_margin + var->vsync_len + 922 var->lower_margin) & 1)) 923 var->upper_margin++; 924 } 925 926 var->xres = xres; 927 var->yres = yres; 928 var->xres_virtual = vxres; 929 var->yres_virtual = vyres; 930 } 931 932 /** 933 * set_color_bitfields - sets rgba fields 934 * @var: pointer to fb_var_screeninfo 935 * 936 * DESCRIPTION: 937 * The length, offset and ordering for each color field 938 * (red, green, blue) will be set as specified 939 * by the hardware 940 */ set_color_bitfields(struct fb_var_screeninfo * var)941 static void set_color_bitfields(struct fb_var_screeninfo *var) 942 { 943 switch (var->bits_per_pixel) { 944 case 8: 945 var->red.offset = 0; 946 var->red.length = 8; 947 var->green.offset = 0; 948 var->green.length = 8; 949 var->blue.offset = 0; 950 var->blue.length = 8; 951 var->transp.offset = 0; 952 var->transp.length = 0; 953 break; 954 case 16: 955 var->green.length = (var->green.length == 5) ? 5 : 6; 956 var->red.length = 5; 957 var->blue.length = 5; 958 var->transp.length = 6 - var->green.length; 959 var->blue.offset = 0; 960 var->green.offset = 5; 961 var->red.offset = 5 + var->green.length; 962 var->transp.offset = (5 + var->red.offset) & 15; 963 break; 964 case 24: /* RGB 888 */ 965 case 32: /* RGBA 8888 */ 966 var->red.offset = 16; 967 var->red.length = 8; 968 var->green.offset = 8; 969 var->green.length = 8; 970 var->blue.offset = 0; 971 var->blue.length = 8; 972 var->transp.length = var->bits_per_pixel - 24; 973 var->transp.offset = (var->transp.length) ? 24 : 0; 974 break; 975 } 976 var->red.msb_right = 0; 977 var->green.msb_right = 0; 978 var->blue.msb_right = 0; 979 var->transp.msb_right = 0; 980 } 981 982 /** 983 * i810_check_params - check if contents in var are valid 984 * @var: pointer to fb_var_screeninfo 985 * @info: pointer to fb_info 986 * 987 * DESCRIPTION: 988 * This will check if the framebuffer size is sufficient 989 * for the current mode and if the user's monitor has the 990 * required specifications to display the current mode. 991 */ i810_check_params(struct fb_var_screeninfo * var,struct fb_info * info)992 static int i810_check_params(struct fb_var_screeninfo *var, 993 struct fb_info *info) 994 { 995 struct i810fb_par *par = info->par; 996 int line_length, vidmem, mode_valid = 0, retval = 0; 997 u32 vyres = var->yres_virtual, vxres = var->xres_virtual; 998 999 /* 1000 * Memory limit 1001 */ 1002 line_length = get_line_length(par, vxres, var->bits_per_pixel); 1003 vidmem = line_length*vyres; 1004 1005 if (vidmem > par->fb.size) { 1006 vyres = par->fb.size/line_length; 1007 if (vyres < var->yres) { 1008 vyres = info->var.yres; 1009 vxres = par->fb.size/vyres; 1010 vxres /= var->bits_per_pixel >> 3; 1011 line_length = get_line_length(par, vxres, 1012 var->bits_per_pixel); 1013 vidmem = line_length * info->var.yres; 1014 if (vxres < var->xres) { 1015 printk("i810fb: required video memory, " 1016 "%d bytes, for %dx%d-%d (virtual) " 1017 "is out of range\n", 1018 vidmem, vxres, vyres, 1019 var->bits_per_pixel); 1020 return -ENOMEM; 1021 } 1022 } 1023 } 1024 1025 var->xres_virtual = vxres; 1026 var->yres_virtual = vyres; 1027 1028 /* 1029 * Monitor limit 1030 */ 1031 switch (var->bits_per_pixel) { 1032 case 8: 1033 info->monspecs.dclkmax = 234000000; 1034 break; 1035 case 16: 1036 info->monspecs.dclkmax = 229000000; 1037 break; 1038 case 24: 1039 case 32: 1040 info->monspecs.dclkmax = 204000000; 1041 break; 1042 } 1043 1044 info->monspecs.dclkmin = 15000000; 1045 1046 if (!fb_validate_mode(var, info)) 1047 mode_valid = 1; 1048 1049 #ifdef CONFIG_FB_I810_I2C 1050 if (!mode_valid && info->monspecs.gtf && 1051 !fb_get_mode(FB_MAXTIMINGS, 0, var, info)) 1052 mode_valid = 1; 1053 1054 if (!mode_valid && info->monspecs.modedb_len) { 1055 const struct fb_videomode *mode; 1056 1057 mode = fb_find_best_mode(var, &info->modelist); 1058 if (mode) { 1059 fb_videomode_to_var(var, mode); 1060 mode_valid = 1; 1061 } 1062 } 1063 #endif 1064 if (!mode_valid && info->monspecs.modedb_len == 0) { 1065 if (fb_get_mode(FB_MAXTIMINGS, 0, var, info)) { 1066 int default_sync = (info->monspecs.hfmin-HFMIN) 1067 |(info->monspecs.hfmax-HFMAX) 1068 |(info->monspecs.vfmin-VFMIN) 1069 |(info->monspecs.vfmax-VFMAX); 1070 printk("i810fb: invalid video mode%s\n", 1071 default_sync ? "" : ". Specifying " 1072 "vsyncN/hsyncN parameters may help"); 1073 retval = -EINVAL; 1074 } 1075 } 1076 1077 return retval; 1078 } 1079 1080 /** 1081 * encode_fix - fill up fb_fix_screeninfo structure 1082 * @fix: pointer to fb_fix_screeninfo 1083 * @info: pointer to fb_info 1084 * 1085 * DESCRIPTION: 1086 * This will set up parameters that are unmodifiable by the user. 1087 */ encode_fix(struct fb_fix_screeninfo * fix,struct fb_info * info)1088 static int encode_fix(struct fb_fix_screeninfo *fix, struct fb_info *info) 1089 { 1090 struct i810fb_par *par = info->par; 1091 1092 memset(fix, 0, sizeof(struct fb_fix_screeninfo)); 1093 1094 strcpy(fix->id, "I810"); 1095 mutex_lock(&info->mm_lock); 1096 fix->smem_start = par->fb.physical; 1097 fix->smem_len = par->fb.size; 1098 mutex_unlock(&info->mm_lock); 1099 fix->type = FB_TYPE_PACKED_PIXELS; 1100 fix->type_aux = 0; 1101 fix->xpanstep = 8; 1102 fix->ypanstep = 1; 1103 1104 switch (info->var.bits_per_pixel) { 1105 case 8: 1106 fix->visual = FB_VISUAL_PSEUDOCOLOR; 1107 break; 1108 case 16: 1109 case 24: 1110 case 32: 1111 if (info->var.nonstd) 1112 fix->visual = FB_VISUAL_DIRECTCOLOR; 1113 else 1114 fix->visual = FB_VISUAL_TRUECOLOR; 1115 break; 1116 default: 1117 return -EINVAL; 1118 } 1119 fix->ywrapstep = 0; 1120 fix->line_length = par->pitch; 1121 fix->mmio_start = par->mmio_start_phys; 1122 fix->mmio_len = MMIO_SIZE; 1123 fix->accel = FB_ACCEL_I810; 1124 1125 return 0; 1126 } 1127 1128 /** 1129 * decode_var - modify par according to contents of var 1130 * @var: pointer to fb_var_screeninfo 1131 * @par: pointer to i810fb_par 1132 * 1133 * DESCRIPTION: 1134 * Based on the contents of @var, @par will be dynamically filled up. 1135 * @par contains all information necessary to modify the hardware. 1136 */ decode_var(const struct fb_var_screeninfo * var,struct i810fb_par * par)1137 static void decode_var(const struct fb_var_screeninfo *var, 1138 struct i810fb_par *par) 1139 { 1140 u32 xres, yres, vxres, vyres; 1141 1142 xres = var->xres; 1143 yres = var->yres; 1144 vxres = var->xres_virtual; 1145 vyres = var->yres_virtual; 1146 1147 switch (var->bits_per_pixel) { 1148 case 8: 1149 par->pixconf = PIXCONF8; 1150 par->bltcntl = 0; 1151 par->depth = 1; 1152 par->blit_bpp = BPP8; 1153 break; 1154 case 16: 1155 if (var->green.length == 5) 1156 par->pixconf = PIXCONF15; 1157 else 1158 par->pixconf = PIXCONF16; 1159 par->bltcntl = 16; 1160 par->depth = 2; 1161 par->blit_bpp = BPP16; 1162 break; 1163 case 24: 1164 par->pixconf = PIXCONF24; 1165 par->bltcntl = 32; 1166 par->depth = 3; 1167 par->blit_bpp = BPP24; 1168 break; 1169 case 32: 1170 par->pixconf = PIXCONF32; 1171 par->bltcntl = 0; 1172 par->depth = 4; 1173 par->blit_bpp = 3 << 24; 1174 break; 1175 } 1176 if (var->nonstd && var->bits_per_pixel != 8) 1177 par->pixconf |= 1 << 27; 1178 1179 i810_calc_dclk(var->pixclock, &par->regs.M, 1180 &par->regs.N, &par->regs.P); 1181 i810fb_encode_registers(var, par, xres, yres); 1182 1183 par->watermark = i810_get_watermark(var, par); 1184 par->pitch = get_line_length(par, vxres, var->bits_per_pixel); 1185 } 1186 1187 /** 1188 * i810fb_getcolreg - gets red, green and blue values of the hardware DAC 1189 * @regno: DAC index 1190 * @red: red 1191 * @green: green 1192 * @blue: blue 1193 * @transp: transparency (alpha) 1194 * @info: pointer to fb_info 1195 * 1196 * DESCRIPTION: 1197 * Gets the red, green and blue values of the hardware DAC as pointed by @regno 1198 * and writes them to @red, @green and @blue respectively 1199 */ i810fb_getcolreg(u8 regno,u8 * red,u8 * green,u8 * blue,u8 * transp,struct fb_info * info)1200 static int i810fb_getcolreg(u8 regno, u8 *red, u8 *green, u8 *blue, 1201 u8 *transp, struct fb_info *info) 1202 { 1203 struct i810fb_par *par = info->par; 1204 u8 __iomem *mmio = par->mmio_start_virtual; 1205 u8 temp; 1206 1207 if (info->fix.visual == FB_VISUAL_DIRECTCOLOR) { 1208 if ((info->var.green.length == 5 && regno > 31) || 1209 (info->var.green.length == 6 && regno > 63)) 1210 return 1; 1211 } 1212 1213 temp = i810_readb(PIXCONF1, mmio); 1214 i810_writeb(PIXCONF1, mmio, temp & ~EXTENDED_PALETTE); 1215 1216 if (info->fix.visual == FB_VISUAL_DIRECTCOLOR && 1217 info->var.green.length == 5) 1218 i810_read_dac(regno * 8, red, green, blue, mmio); 1219 1220 else if (info->fix.visual == FB_VISUAL_DIRECTCOLOR && 1221 info->var.green.length == 6) { 1222 u8 tmp; 1223 1224 i810_read_dac(regno * 8, red, &tmp, blue, mmio); 1225 i810_read_dac(regno * 4, &tmp, green, &tmp, mmio); 1226 } 1227 else 1228 i810_read_dac(regno, red, green, blue, mmio); 1229 1230 *transp = 0; 1231 i810_writeb(PIXCONF1, mmio, temp); 1232 1233 return 0; 1234 } 1235 1236 /****************************************************************** 1237 * Framebuffer device-specific hooks * 1238 ******************************************************************/ 1239 i810fb_open(struct fb_info * info,int user)1240 static int i810fb_open(struct fb_info *info, int user) 1241 { 1242 struct i810fb_par *par = info->par; 1243 1244 mutex_lock(&par->open_lock); 1245 if (par->use_count == 0) { 1246 memset(&par->state, 0, sizeof(struct vgastate)); 1247 par->state.flags = VGA_SAVE_CMAP; 1248 par->state.vgabase = par->mmio_start_virtual; 1249 save_vga(&par->state); 1250 1251 i810_save_vga_state(par); 1252 } 1253 1254 par->use_count++; 1255 mutex_unlock(&par->open_lock); 1256 1257 return 0; 1258 } 1259 i810fb_release(struct fb_info * info,int user)1260 static int i810fb_release(struct fb_info *info, int user) 1261 { 1262 struct i810fb_par *par = info->par; 1263 1264 mutex_lock(&par->open_lock); 1265 if (par->use_count == 0) { 1266 mutex_unlock(&par->open_lock); 1267 return -EINVAL; 1268 } 1269 1270 if (par->use_count == 1) { 1271 i810_restore_vga_state(par); 1272 restore_vga(&par->state); 1273 } 1274 1275 par->use_count--; 1276 mutex_unlock(&par->open_lock); 1277 1278 return 0; 1279 } 1280 1281 i810fb_setcolreg(unsigned regno,unsigned red,unsigned green,unsigned blue,unsigned transp,struct fb_info * info)1282 static int i810fb_setcolreg(unsigned regno, unsigned red, unsigned green, 1283 unsigned blue, unsigned transp, 1284 struct fb_info *info) 1285 { 1286 struct i810fb_par *par = info->par; 1287 u8 __iomem *mmio = par->mmio_start_virtual; 1288 u8 temp; 1289 int i; 1290 1291 if (regno > 255) return 1; 1292 1293 if (info->fix.visual == FB_VISUAL_DIRECTCOLOR) { 1294 if ((info->var.green.length == 5 && regno > 31) || 1295 (info->var.green.length == 6 && regno > 63)) 1296 return 1; 1297 } 1298 1299 if (info->var.grayscale) 1300 red = green = blue = (19595 * red + 38470 * green + 1301 7471 * blue) >> 16; 1302 1303 temp = i810_readb(PIXCONF1, mmio); 1304 i810_writeb(PIXCONF1, mmio, temp & ~EXTENDED_PALETTE); 1305 1306 if (info->fix.visual == FB_VISUAL_DIRECTCOLOR && 1307 info->var.green.length == 5) { 1308 for (i = 0; i < 8; i++) 1309 i810_write_dac((u8) (regno * 8) + i, (u8) red, 1310 (u8) green, (u8) blue, mmio); 1311 } else if (info->fix.visual == FB_VISUAL_DIRECTCOLOR && 1312 info->var.green.length == 6) { 1313 u8 r, g, b; 1314 1315 if (regno < 32) { 1316 for (i = 0; i < 8; i++) 1317 i810_write_dac((u8) (regno * 8) + i, 1318 (u8) red, (u8) green, 1319 (u8) blue, mmio); 1320 } 1321 i810_read_dac((u8) (regno*4), &r, &g, &b, mmio); 1322 for (i = 0; i < 4; i++) 1323 i810_write_dac((u8) (regno*4) + i, r, (u8) green, 1324 b, mmio); 1325 } else if (info->fix.visual == FB_VISUAL_PSEUDOCOLOR) { 1326 i810_write_dac((u8) regno, (u8) red, (u8) green, 1327 (u8) blue, mmio); 1328 } 1329 1330 i810_writeb(PIXCONF1, mmio, temp); 1331 1332 if (regno < 16) { 1333 switch (info->var.bits_per_pixel) { 1334 case 16: 1335 if (info->fix.visual == FB_VISUAL_DIRECTCOLOR) { 1336 if (info->var.green.length == 5) 1337 ((u32 *)info->pseudo_palette)[regno] = 1338 (regno << 10) | (regno << 5) | 1339 regno; 1340 else 1341 ((u32 *)info->pseudo_palette)[regno] = 1342 (regno << 11) | (regno << 5) | 1343 regno; 1344 } else { 1345 if (info->var.green.length == 5) { 1346 /* RGB 555 */ 1347 ((u32 *)info->pseudo_palette)[regno] = 1348 ((red & 0xf800) >> 1) | 1349 ((green & 0xf800) >> 6) | 1350 ((blue & 0xf800) >> 11); 1351 } else { 1352 /* RGB 565 */ 1353 ((u32 *)info->pseudo_palette)[regno] = 1354 (red & 0xf800) | 1355 ((green & 0xf800) >> 5) | 1356 ((blue & 0xf800) >> 11); 1357 } 1358 } 1359 break; 1360 case 24: /* RGB 888 */ 1361 case 32: /* RGBA 8888 */ 1362 if (info->fix.visual == FB_VISUAL_DIRECTCOLOR) 1363 ((u32 *)info->pseudo_palette)[regno] = 1364 (regno << 16) | (regno << 8) | 1365 regno; 1366 else 1367 ((u32 *)info->pseudo_palette)[regno] = 1368 ((red & 0xff00) << 8) | 1369 (green & 0xff00) | 1370 ((blue & 0xff00) >> 8); 1371 break; 1372 } 1373 } 1374 return 0; 1375 } 1376 i810fb_pan_display(struct fb_var_screeninfo * var,struct fb_info * info)1377 static int i810fb_pan_display(struct fb_var_screeninfo *var, 1378 struct fb_info *info) 1379 { 1380 struct i810fb_par *par = info->par; 1381 u32 total; 1382 1383 total = var->xoffset * par->depth + 1384 var->yoffset * info->fix.line_length; 1385 i810fb_load_front(total, info); 1386 1387 return 0; 1388 } 1389 i810fb_blank(int blank_mode,struct fb_info * info)1390 static int i810fb_blank (int blank_mode, struct fb_info *info) 1391 { 1392 struct i810fb_par *par = info->par; 1393 u8 __iomem *mmio = par->mmio_start_virtual; 1394 int mode = 0, pwr, scr_off = 0; 1395 1396 pwr = i810_readl(PWR_CLKC, mmio); 1397 1398 switch (blank_mode) { 1399 case FB_BLANK_UNBLANK: 1400 mode = POWERON; 1401 pwr |= 1; 1402 scr_off = ON; 1403 break; 1404 case FB_BLANK_NORMAL: 1405 mode = POWERON; 1406 pwr |= 1; 1407 scr_off = OFF; 1408 break; 1409 case FB_BLANK_VSYNC_SUSPEND: 1410 mode = STANDBY; 1411 pwr |= 1; 1412 scr_off = OFF; 1413 break; 1414 case FB_BLANK_HSYNC_SUSPEND: 1415 mode = SUSPEND; 1416 pwr |= 1; 1417 scr_off = OFF; 1418 break; 1419 case FB_BLANK_POWERDOWN: 1420 mode = POWERDOWN; 1421 pwr &= ~1; 1422 scr_off = OFF; 1423 break; 1424 default: 1425 return -EINVAL; 1426 } 1427 1428 i810_screen_off(mmio, scr_off); 1429 i810_writel(HVSYNC, mmio, mode); 1430 i810_writel(PWR_CLKC, mmio, pwr); 1431 1432 return 0; 1433 } 1434 i810fb_set_par(struct fb_info * info)1435 static int i810fb_set_par(struct fb_info *info) 1436 { 1437 struct i810fb_par *par = info->par; 1438 1439 decode_var(&info->var, par); 1440 i810_load_regs(par); 1441 i810_init_cursor(par); 1442 encode_fix(&info->fix, info); 1443 1444 if (info->var.accel_flags && !(par->dev_flags & LOCKUP)) { 1445 info->flags = FBINFO_HWACCEL_YPAN | 1446 FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT | 1447 FBINFO_HWACCEL_IMAGEBLIT; 1448 info->pixmap.scan_align = 2; 1449 } else { 1450 info->pixmap.scan_align = 1; 1451 info->flags = FBINFO_HWACCEL_YPAN; 1452 } 1453 return 0; 1454 } 1455 i810fb_check_var(struct fb_var_screeninfo * var,struct fb_info * info)1456 static int i810fb_check_var(struct fb_var_screeninfo *var, 1457 struct fb_info *info) 1458 { 1459 int err; 1460 1461 if (IS_DVT) { 1462 var->vmode &= ~FB_VMODE_MASK; 1463 var->vmode |= FB_VMODE_NONINTERLACED; 1464 } 1465 if (var->vmode & FB_VMODE_DOUBLE) { 1466 var->vmode &= ~FB_VMODE_MASK; 1467 var->vmode |= FB_VMODE_NONINTERLACED; 1468 } 1469 1470 i810_round_off(var); 1471 if ((err = i810_check_params(var, info))) 1472 return err; 1473 1474 i810fb_fill_var_timings(var); 1475 set_color_bitfields(var); 1476 return 0; 1477 } 1478 i810fb_cursor(struct fb_info * info,struct fb_cursor * cursor)1479 static int i810fb_cursor(struct fb_info *info, struct fb_cursor *cursor) 1480 { 1481 struct i810fb_par *par = info->par; 1482 u8 __iomem *mmio = par->mmio_start_virtual; 1483 1484 if (par->dev_flags & LOCKUP) 1485 return -ENXIO; 1486 1487 if (cursor->image.width > 64 || cursor->image.height > 64) 1488 return -ENXIO; 1489 1490 if ((i810_readl(CURBASE, mmio) & 0xf) != par->cursor_heap.physical) { 1491 i810_init_cursor(par); 1492 cursor->set |= FB_CUR_SETALL; 1493 } 1494 1495 i810_enable_cursor(mmio, OFF); 1496 1497 if (cursor->set & FB_CUR_SETPOS) { 1498 u32 tmp; 1499 1500 tmp = (cursor->image.dx - info->var.xoffset) & 0xffff; 1501 tmp |= (cursor->image.dy - info->var.yoffset) << 16; 1502 i810_writel(CURPOS, mmio, tmp); 1503 } 1504 1505 if (cursor->set & FB_CUR_SETSIZE) 1506 i810_reset_cursor_image(par); 1507 1508 if (cursor->set & FB_CUR_SETCMAP) 1509 i810_load_cursor_colors(cursor->image.fg_color, 1510 cursor->image.bg_color, 1511 info); 1512 1513 if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) { 1514 int size = ((cursor->image.width + 7) >> 3) * 1515 cursor->image.height; 1516 int i; 1517 u8 *data = kmalloc(64 * 8, GFP_ATOMIC); 1518 1519 if (data == NULL) 1520 return -ENOMEM; 1521 1522 switch (cursor->rop) { 1523 case ROP_XOR: 1524 for (i = 0; i < size; i++) 1525 data[i] = cursor->image.data[i] ^ cursor->mask[i]; 1526 break; 1527 case ROP_COPY: 1528 default: 1529 for (i = 0; i < size; i++) 1530 data[i] = cursor->image.data[i] & cursor->mask[i]; 1531 break; 1532 } 1533 1534 i810_load_cursor_image(cursor->image.width, 1535 cursor->image.height, data, 1536 par); 1537 kfree(data); 1538 } 1539 1540 if (cursor->enable) 1541 i810_enable_cursor(mmio, ON); 1542 1543 return 0; 1544 } 1545 1546 static const struct fb_ops i810fb_ops = { 1547 .owner = THIS_MODULE, 1548 .fb_open = i810fb_open, 1549 .fb_release = i810fb_release, 1550 .fb_check_var = i810fb_check_var, 1551 .fb_set_par = i810fb_set_par, 1552 .fb_setcolreg = i810fb_setcolreg, 1553 .fb_blank = i810fb_blank, 1554 .fb_pan_display = i810fb_pan_display, 1555 .fb_fillrect = i810fb_fillrect, 1556 .fb_copyarea = i810fb_copyarea, 1557 .fb_imageblit = i810fb_imageblit, 1558 .fb_cursor = i810fb_cursor, 1559 .fb_sync = i810fb_sync, 1560 }; 1561 1562 /*********************************************************************** 1563 * Power Management * 1564 ***********************************************************************/ i810fb_suspend(struct pci_dev * dev,pm_message_t mesg)1565 static int i810fb_suspend(struct pci_dev *dev, pm_message_t mesg) 1566 { 1567 struct fb_info *info = pci_get_drvdata(dev); 1568 struct i810fb_par *par = info->par; 1569 1570 par->cur_state = mesg.event; 1571 1572 switch (mesg.event) { 1573 case PM_EVENT_FREEZE: 1574 case PM_EVENT_PRETHAW: 1575 dev->dev.power.power_state = mesg; 1576 return 0; 1577 } 1578 1579 console_lock(); 1580 fb_set_suspend(info, 1); 1581 1582 if (info->fbops->fb_sync) 1583 info->fbops->fb_sync(info); 1584 1585 i810fb_blank(FB_BLANK_POWERDOWN, info); 1586 agp_unbind_memory(par->i810_gtt.i810_fb_memory); 1587 agp_unbind_memory(par->i810_gtt.i810_cursor_memory); 1588 1589 pci_save_state(dev); 1590 pci_disable_device(dev); 1591 pci_set_power_state(dev, pci_choose_state(dev, mesg)); 1592 console_unlock(); 1593 1594 return 0; 1595 } 1596 i810fb_resume(struct pci_dev * dev)1597 static int i810fb_resume(struct pci_dev *dev) 1598 { 1599 struct fb_info *info = pci_get_drvdata(dev); 1600 struct i810fb_par *par = info->par; 1601 int cur_state = par->cur_state; 1602 1603 par->cur_state = PM_EVENT_ON; 1604 1605 if (cur_state == PM_EVENT_FREEZE) { 1606 pci_set_power_state(dev, PCI_D0); 1607 return 0; 1608 } 1609 1610 console_lock(); 1611 pci_set_power_state(dev, PCI_D0); 1612 pci_restore_state(dev); 1613 1614 if (pci_enable_device(dev)) 1615 goto fail; 1616 1617 pci_set_master(dev); 1618 agp_bind_memory(par->i810_gtt.i810_fb_memory, 1619 par->fb.offset); 1620 agp_bind_memory(par->i810_gtt.i810_cursor_memory, 1621 par->cursor_heap.offset); 1622 i810fb_set_par(info); 1623 fb_set_suspend (info, 0); 1624 info->fbops->fb_blank(VESA_NO_BLANKING, info); 1625 fail: 1626 console_unlock(); 1627 return 0; 1628 } 1629 /*********************************************************************** 1630 * AGP resource allocation * 1631 ***********************************************************************/ 1632 i810_fix_pointers(struct i810fb_par * par)1633 static void i810_fix_pointers(struct i810fb_par *par) 1634 { 1635 par->fb.physical = par->aperture.physical+(par->fb.offset << 12); 1636 par->fb.virtual = par->aperture.virtual+(par->fb.offset << 12); 1637 par->iring.physical = par->aperture.physical + 1638 (par->iring.offset << 12); 1639 par->iring.virtual = par->aperture.virtual + 1640 (par->iring.offset << 12); 1641 par->cursor_heap.virtual = par->aperture.virtual+ 1642 (par->cursor_heap.offset << 12); 1643 } 1644 i810_fix_offsets(struct i810fb_par * par)1645 static void i810_fix_offsets(struct i810fb_par *par) 1646 { 1647 if (vram + 1 > par->aperture.size >> 20) 1648 vram = (par->aperture.size >> 20) - 1; 1649 if (v_offset_default > (par->aperture.size >> 20)) 1650 v_offset_default = (par->aperture.size >> 20); 1651 if (vram + v_offset_default + 1 > par->aperture.size >> 20) 1652 v_offset_default = (par->aperture.size >> 20) - (vram + 1); 1653 1654 par->fb.size = vram << 20; 1655 par->fb.offset = v_offset_default << 20; 1656 par->fb.offset >>= 12; 1657 1658 par->iring.offset = par->fb.offset + (par->fb.size >> 12); 1659 par->iring.size = RINGBUFFER_SIZE; 1660 1661 par->cursor_heap.offset = par->iring.offset + (RINGBUFFER_SIZE >> 12); 1662 par->cursor_heap.size = 4096; 1663 } 1664 i810_alloc_agp_mem(struct fb_info * info)1665 static int i810_alloc_agp_mem(struct fb_info *info) 1666 { 1667 struct i810fb_par *par = info->par; 1668 int size; 1669 struct agp_bridge_data *bridge; 1670 1671 i810_fix_offsets(par); 1672 size = par->fb.size + par->iring.size; 1673 1674 if (!(bridge = agp_backend_acquire(par->dev))) { 1675 printk("i810fb_alloc_fbmem: cannot acquire agpgart\n"); 1676 return -ENODEV; 1677 } 1678 if (!(par->i810_gtt.i810_fb_memory = 1679 agp_allocate_memory(bridge, size >> 12, AGP_NORMAL_MEMORY))) { 1680 printk("i810fb_alloc_fbmem: can't allocate framebuffer " 1681 "memory\n"); 1682 agp_backend_release(bridge); 1683 return -ENOMEM; 1684 } 1685 if (agp_bind_memory(par->i810_gtt.i810_fb_memory, 1686 par->fb.offset)) { 1687 printk("i810fb_alloc_fbmem: can't bind framebuffer memory\n"); 1688 agp_backend_release(bridge); 1689 return -EBUSY; 1690 } 1691 1692 if (!(par->i810_gtt.i810_cursor_memory = 1693 agp_allocate_memory(bridge, par->cursor_heap.size >> 12, 1694 AGP_PHYSICAL_MEMORY))) { 1695 printk("i810fb_alloc_cursormem: can't allocate " 1696 "cursor memory\n"); 1697 agp_backend_release(bridge); 1698 return -ENOMEM; 1699 } 1700 if (agp_bind_memory(par->i810_gtt.i810_cursor_memory, 1701 par->cursor_heap.offset)) { 1702 printk("i810fb_alloc_cursormem: cannot bind cursor memory\n"); 1703 agp_backend_release(bridge); 1704 return -EBUSY; 1705 } 1706 1707 par->cursor_heap.physical = par->i810_gtt.i810_cursor_memory->physical; 1708 1709 i810_fix_pointers(par); 1710 1711 agp_backend_release(bridge); 1712 1713 return 0; 1714 } 1715 1716 /*************************************************************** 1717 * Initialization * 1718 ***************************************************************/ 1719 1720 /** 1721 * i810_init_monspecs 1722 * @info: pointer to device specific info structure 1723 * 1724 * DESCRIPTION: 1725 * Sets the user monitor's horizontal and vertical 1726 * frequency limits 1727 */ i810_init_monspecs(struct fb_info * info)1728 static void i810_init_monspecs(struct fb_info *info) 1729 { 1730 if (!hsync1) 1731 hsync1 = HFMIN; 1732 if (!hsync2) 1733 hsync2 = HFMAX; 1734 if (!info->monspecs.hfmax) 1735 info->monspecs.hfmax = hsync2; 1736 if (!info->monspecs.hfmin) 1737 info->monspecs.hfmin = hsync1; 1738 if (hsync2 < hsync1) 1739 info->monspecs.hfmin = hsync2; 1740 1741 if (!vsync1) 1742 vsync1 = VFMIN; 1743 if (!vsync2) 1744 vsync2 = VFMAX; 1745 if (IS_DVT && vsync1 < 60) 1746 vsync1 = 60; 1747 if (!info->monspecs.vfmax) 1748 info->monspecs.vfmax = vsync2; 1749 if (!info->monspecs.vfmin) 1750 info->monspecs.vfmin = vsync1; 1751 if (vsync2 < vsync1) 1752 info->monspecs.vfmin = vsync2; 1753 } 1754 1755 /** 1756 * i810_init_defaults - initializes default values to use 1757 * @par: pointer to i810fb_par structure 1758 * @info: pointer to current fb_info structure 1759 */ i810_init_defaults(struct i810fb_par * par,struct fb_info * info)1760 static void i810_init_defaults(struct i810fb_par *par, struct fb_info *info) 1761 { 1762 mutex_init(&par->open_lock); 1763 1764 if (voffset) 1765 v_offset_default = voffset; 1766 else if (par->aperture.size > 32 * 1024 * 1024) 1767 v_offset_default = 16; 1768 else 1769 v_offset_default = 8; 1770 1771 if (!vram) 1772 vram = 1; 1773 1774 if (accel) 1775 par->dev_flags |= HAS_ACCELERATION; 1776 1777 if (sync) 1778 par->dev_flags |= ALWAYS_SYNC; 1779 1780 par->ddc_num = (ddc3 ? 3 : 2); 1781 1782 if (bpp < 8) 1783 bpp = 8; 1784 1785 par->i810fb_ops = i810fb_ops; 1786 1787 if (xres) 1788 info->var.xres = xres; 1789 else 1790 info->var.xres = 640; 1791 1792 if (yres) 1793 info->var.yres = yres; 1794 else 1795 info->var.yres = 480; 1796 1797 if (!vyres) 1798 vyres = (vram << 20)/(info->var.xres*bpp >> 3); 1799 1800 info->var.yres_virtual = vyres; 1801 info->var.bits_per_pixel = bpp; 1802 1803 if (dcolor) 1804 info->var.nonstd = 1; 1805 1806 if (par->dev_flags & HAS_ACCELERATION) 1807 info->var.accel_flags = 1; 1808 1809 i810_init_monspecs(info); 1810 } 1811 1812 /** 1813 * i810_init_device - initialize device 1814 * @par: pointer to i810fb_par structure 1815 */ i810_init_device(struct i810fb_par * par)1816 static void i810_init_device(struct i810fb_par *par) 1817 { 1818 u8 reg; 1819 u8 __iomem *mmio = par->mmio_start_virtual; 1820 1821 if (mtrr) 1822 par->wc_cookie= arch_phys_wc_add((u32) par->aperture.physical, 1823 par->aperture.size); 1824 1825 i810_init_cursor(par); 1826 1827 /* mvo: enable external vga-connector (for laptops) */ 1828 if (extvga) { 1829 i810_writel(HVSYNC, mmio, 0); 1830 i810_writel(PWR_CLKC, mmio, 3); 1831 } 1832 1833 pci_read_config_byte(par->dev, 0x50, ®); 1834 reg &= FREQ_MASK; 1835 par->mem_freq = (reg) ? 133 : 100; 1836 1837 } 1838 i810_allocate_pci_resource(struct i810fb_par * par,const struct pci_device_id * entry)1839 static int i810_allocate_pci_resource(struct i810fb_par *par, 1840 const struct pci_device_id *entry) 1841 { 1842 int err; 1843 1844 if ((err = pci_enable_device(par->dev))) { 1845 printk("i810fb_init: cannot enable device\n"); 1846 return err; 1847 } 1848 par->res_flags |= PCI_DEVICE_ENABLED; 1849 1850 if (pci_resource_len(par->dev, 0) > 512 * 1024) { 1851 par->aperture.physical = pci_resource_start(par->dev, 0); 1852 par->aperture.size = pci_resource_len(par->dev, 0); 1853 par->mmio_start_phys = pci_resource_start(par->dev, 1); 1854 } else { 1855 par->aperture.physical = pci_resource_start(par->dev, 1); 1856 par->aperture.size = pci_resource_len(par->dev, 1); 1857 par->mmio_start_phys = pci_resource_start(par->dev, 0); 1858 } 1859 if (!par->aperture.size) { 1860 printk("i810fb_init: device is disabled\n"); 1861 return -ENOMEM; 1862 } 1863 1864 if (!request_mem_region(par->aperture.physical, 1865 par->aperture.size, 1866 i810_pci_list[entry->driver_data])) { 1867 printk("i810fb_init: cannot request framebuffer region\n"); 1868 return -ENODEV; 1869 } 1870 par->res_flags |= FRAMEBUFFER_REQ; 1871 1872 par->aperture.virtual = ioremap_wc(par->aperture.physical, 1873 par->aperture.size); 1874 if (!par->aperture.virtual) { 1875 printk("i810fb_init: cannot remap framebuffer region\n"); 1876 return -ENODEV; 1877 } 1878 1879 if (!request_mem_region(par->mmio_start_phys, 1880 MMIO_SIZE, 1881 i810_pci_list[entry->driver_data])) { 1882 printk("i810fb_init: cannot request mmio region\n"); 1883 return -ENODEV; 1884 } 1885 par->res_flags |= MMIO_REQ; 1886 1887 par->mmio_start_virtual = ioremap(par->mmio_start_phys, 1888 MMIO_SIZE); 1889 if (!par->mmio_start_virtual) { 1890 printk("i810fb_init: cannot remap mmio region\n"); 1891 return -ENODEV; 1892 } 1893 1894 return 0; 1895 } 1896 i810fb_find_init_mode(struct fb_info * info)1897 static void i810fb_find_init_mode(struct fb_info *info) 1898 { 1899 struct fb_videomode mode; 1900 struct fb_var_screeninfo var; 1901 struct fb_monspecs *specs = &info->monspecs; 1902 int found = 0; 1903 #ifdef CONFIG_FB_I810_I2C 1904 int i; 1905 int err = 1; 1906 struct i810fb_par *par = info->par; 1907 #endif 1908 1909 INIT_LIST_HEAD(&info->modelist); 1910 memset(&mode, 0, sizeof(struct fb_videomode)); 1911 var = info->var; 1912 #ifdef CONFIG_FB_I810_I2C 1913 i810_create_i2c_busses(par); 1914 1915 for (i = 0; i < par->ddc_num + 1; i++) { 1916 err = i810_probe_i2c_connector(info, &par->edid, i); 1917 if (!err) 1918 break; 1919 } 1920 1921 if (!err) 1922 printk("i810fb_init_pci: DDC probe successful\n"); 1923 1924 fb_edid_to_monspecs(par->edid, specs); 1925 1926 if (specs->modedb == NULL) 1927 printk("i810fb_init_pci: Unable to get Mode Database\n"); 1928 1929 fb_videomode_to_modelist(specs->modedb, specs->modedb_len, 1930 &info->modelist); 1931 if (specs->modedb != NULL) { 1932 const struct fb_videomode *m; 1933 1934 if (xres && yres) { 1935 if ((m = fb_find_best_mode(&var, &info->modelist))) { 1936 mode = *m; 1937 found = 1; 1938 } 1939 } 1940 1941 if (!found) { 1942 m = fb_find_best_display(&info->monspecs, &info->modelist); 1943 mode = *m; 1944 found = 1; 1945 } 1946 1947 fb_videomode_to_var(&var, &mode); 1948 } 1949 #endif 1950 if (mode_option) 1951 fb_find_mode(&var, info, mode_option, specs->modedb, 1952 specs->modedb_len, (found) ? &mode : NULL, 1953 info->var.bits_per_pixel); 1954 1955 info->var = var; 1956 fb_destroy_modedb(specs->modedb); 1957 specs->modedb = NULL; 1958 } 1959 1960 #ifndef MODULE i810fb_setup(char * options)1961 static int i810fb_setup(char *options) 1962 { 1963 char *this_opt, *suffix = NULL; 1964 1965 if (!options || !*options) 1966 return 0; 1967 1968 while ((this_opt = strsep(&options, ",")) != NULL) { 1969 if (!strncmp(this_opt, "mtrr", 4)) 1970 mtrr = true; 1971 else if (!strncmp(this_opt, "accel", 5)) 1972 accel = true; 1973 else if (!strncmp(this_opt, "extvga", 6)) 1974 extvga = true; 1975 else if (!strncmp(this_opt, "sync", 4)) 1976 sync = true; 1977 else if (!strncmp(this_opt, "vram:", 5)) 1978 vram = (simple_strtoul(this_opt+5, NULL, 0)); 1979 else if (!strncmp(this_opt, "voffset:", 8)) 1980 voffset = (simple_strtoul(this_opt+8, NULL, 0)); 1981 else if (!strncmp(this_opt, "xres:", 5)) 1982 xres = simple_strtoul(this_opt+5, NULL, 0); 1983 else if (!strncmp(this_opt, "yres:", 5)) 1984 yres = simple_strtoul(this_opt+5, NULL, 0); 1985 else if (!strncmp(this_opt, "vyres:", 6)) 1986 vyres = simple_strtoul(this_opt+6, NULL, 0); 1987 else if (!strncmp(this_opt, "bpp:", 4)) 1988 bpp = simple_strtoul(this_opt+4, NULL, 0); 1989 else if (!strncmp(this_opt, "hsync1:", 7)) { 1990 hsync1 = simple_strtoul(this_opt+7, &suffix, 0); 1991 if (strncmp(suffix, "H", 1)) 1992 hsync1 *= 1000; 1993 } else if (!strncmp(this_opt, "hsync2:", 7)) { 1994 hsync2 = simple_strtoul(this_opt+7, &suffix, 0); 1995 if (strncmp(suffix, "H", 1)) 1996 hsync2 *= 1000; 1997 } else if (!strncmp(this_opt, "vsync1:", 7)) 1998 vsync1 = simple_strtoul(this_opt+7, NULL, 0); 1999 else if (!strncmp(this_opt, "vsync2:", 7)) 2000 vsync2 = simple_strtoul(this_opt+7, NULL, 0); 2001 else if (!strncmp(this_opt, "dcolor", 6)) 2002 dcolor = true; 2003 else if (!strncmp(this_opt, "ddc3", 4)) 2004 ddc3 = true; 2005 else 2006 mode_option = this_opt; 2007 } 2008 return 0; 2009 } 2010 #endif 2011 i810fb_init_pci(struct pci_dev * dev,const struct pci_device_id * entry)2012 static int i810fb_init_pci(struct pci_dev *dev, 2013 const struct pci_device_id *entry) 2014 { 2015 struct fb_info *info; 2016 struct i810fb_par *par = NULL; 2017 struct fb_videomode mode; 2018 int err = -1, vfreq, hfreq, pixclock; 2019 2020 err = aperture_remove_conflicting_pci_devices(dev, "i810fb"); 2021 if (err) 2022 return err; 2023 2024 info = framebuffer_alloc(sizeof(struct i810fb_par), &dev->dev); 2025 if (!info) 2026 return -ENOMEM; 2027 2028 par = info->par; 2029 par->dev = dev; 2030 2031 if (!(info->pixmap.addr = kzalloc(8*1024, GFP_KERNEL))) { 2032 i810fb_release_resource(info, par); 2033 return -ENOMEM; 2034 } 2035 info->pixmap.size = 8*1024; 2036 info->pixmap.buf_align = 8; 2037 info->pixmap.access_align = 32; 2038 info->pixmap.flags = FB_PIXMAP_SYSTEM; 2039 2040 if ((err = i810_allocate_pci_resource(par, entry))) { 2041 i810fb_release_resource(info, par); 2042 return err; 2043 } 2044 2045 i810_init_defaults(par, info); 2046 2047 if ((err = i810_alloc_agp_mem(info))) { 2048 i810fb_release_resource(info, par); 2049 return err; 2050 } 2051 2052 i810_init_device(par); 2053 2054 info->screen_base = par->fb.virtual; 2055 info->fbops = &par->i810fb_ops; 2056 info->pseudo_palette = par->pseudo_palette; 2057 fb_alloc_cmap(&info->cmap, 256, 0); 2058 i810fb_find_init_mode(info); 2059 2060 if ((err = info->fbops->fb_check_var(&info->var, info))) { 2061 i810fb_release_resource(info, par); 2062 return err; 2063 } 2064 2065 fb_var_to_videomode(&mode, &info->var); 2066 fb_add_videomode(&mode, &info->modelist); 2067 2068 i810fb_init_ringbuffer(info); 2069 err = register_framebuffer(info); 2070 2071 if (err < 0) { 2072 i810fb_release_resource(info, par); 2073 printk("i810fb_init: cannot register framebuffer device\n"); 2074 return err; 2075 } 2076 2077 pci_set_drvdata(dev, info); 2078 pixclock = 1000000000/(info->var.pixclock); 2079 pixclock *= 1000; 2080 hfreq = pixclock/(info->var.xres + info->var.left_margin + 2081 info->var.hsync_len + info->var.right_margin); 2082 vfreq = hfreq/(info->var.yres + info->var.upper_margin + 2083 info->var.vsync_len + info->var.lower_margin); 2084 2085 printk("I810FB: fb%d : %s v%d.%d.%d%s\n" 2086 "I810FB: Video RAM : %dK\n" 2087 "I810FB: Monitor : H: %d-%d KHz V: %d-%d Hz\n" 2088 "I810FB: Mode : %dx%d-%dbpp@%dHz\n", 2089 info->node, 2090 i810_pci_list[entry->driver_data], 2091 VERSION_MAJOR, VERSION_MINOR, VERSION_TEENIE, BRANCH_VERSION, 2092 (int) par->fb.size>>10, info->monspecs.hfmin/1000, 2093 info->monspecs.hfmax/1000, info->monspecs.vfmin, 2094 info->monspecs.vfmax, info->var.xres, 2095 info->var.yres, info->var.bits_per_pixel, vfreq); 2096 return 0; 2097 } 2098 2099 /*************************************************************** 2100 * De-initialization * 2101 ***************************************************************/ 2102 i810fb_release_resource(struct fb_info * info,struct i810fb_par * par)2103 static void i810fb_release_resource(struct fb_info *info, 2104 struct i810fb_par *par) 2105 { 2106 struct gtt_data *gtt = &par->i810_gtt; 2107 arch_phys_wc_del(par->wc_cookie); 2108 2109 i810_delete_i2c_busses(par); 2110 2111 if (par->i810_gtt.i810_cursor_memory) 2112 agp_free_memory(gtt->i810_cursor_memory); 2113 if (par->i810_gtt.i810_fb_memory) 2114 agp_free_memory(gtt->i810_fb_memory); 2115 2116 if (par->mmio_start_virtual) 2117 iounmap(par->mmio_start_virtual); 2118 if (par->aperture.virtual) 2119 iounmap(par->aperture.virtual); 2120 kfree(par->edid); 2121 if (par->res_flags & FRAMEBUFFER_REQ) 2122 release_mem_region(par->aperture.physical, 2123 par->aperture.size); 2124 if (par->res_flags & MMIO_REQ) 2125 release_mem_region(par->mmio_start_phys, MMIO_SIZE); 2126 2127 framebuffer_release(info); 2128 2129 } 2130 i810fb_remove_pci(struct pci_dev * dev)2131 static void i810fb_remove_pci(struct pci_dev *dev) 2132 { 2133 struct fb_info *info = pci_get_drvdata(dev); 2134 struct i810fb_par *par = info->par; 2135 2136 unregister_framebuffer(info); 2137 i810fb_release_resource(info, par); 2138 printk("cleanup_module: unloaded i810 framebuffer device\n"); 2139 } 2140 2141 #ifndef MODULE i810fb_init(void)2142 static int i810fb_init(void) 2143 { 2144 char *option = NULL; 2145 2146 if (fb_modesetting_disabled("i810fb")) 2147 return -ENODEV; 2148 2149 if (fb_get_options("i810fb", &option)) 2150 return -ENODEV; 2151 i810fb_setup(option); 2152 2153 return pci_register_driver(&i810fb_driver); 2154 } 2155 #endif 2156 2157 /********************************************************************* 2158 * Modularization * 2159 *********************************************************************/ 2160 2161 #ifdef MODULE 2162 i810fb_init(void)2163 static int i810fb_init(void) 2164 { 2165 if (fb_modesetting_disabled("i810fb")) 2166 return -ENODEV; 2167 2168 hsync1 *= 1000; 2169 hsync2 *= 1000; 2170 2171 return pci_register_driver(&i810fb_driver); 2172 } 2173 2174 module_param(vram, int, 0); 2175 MODULE_PARM_DESC(vram, "System RAM to allocate to framebuffer in MiB" 2176 " (default=4)"); 2177 module_param(voffset, int, 0); 2178 MODULE_PARM_DESC(voffset, "at what offset to place start of framebuffer " 2179 "memory (0 to maximum aperture size), in MiB (default = 48)"); 2180 module_param(bpp, int, 0); 2181 MODULE_PARM_DESC(bpp, "Color depth for display in bits per pixel" 2182 " (default = 8)"); 2183 module_param(xres, int, 0); 2184 MODULE_PARM_DESC(xres, "Horizontal resolution in pixels (default = 640)"); 2185 module_param(yres, int, 0); 2186 MODULE_PARM_DESC(yres, "Vertical resolution in scanlines (default = 480)"); 2187 module_param(vyres,int, 0); 2188 MODULE_PARM_DESC(vyres, "Virtual vertical resolution in scanlines" 2189 " (default = 480)"); 2190 module_param(hsync1, int, 0); 2191 MODULE_PARM_DESC(hsync1, "Minimum horizontal frequency of monitor in KHz" 2192 " (default = 29)"); 2193 module_param(hsync2, int, 0); 2194 MODULE_PARM_DESC(hsync2, "Maximum horizontal frequency of monitor in KHz" 2195 " (default = 30)"); 2196 module_param(vsync1, int, 0); 2197 MODULE_PARM_DESC(vsync1, "Minimum vertical frequency of monitor in Hz" 2198 " (default = 50)"); 2199 module_param(vsync2, int, 0); 2200 MODULE_PARM_DESC(vsync2, "Maximum vertical frequency of monitor in Hz" 2201 " (default = 60)"); 2202 module_param(accel, bool, 0); 2203 MODULE_PARM_DESC(accel, "Use Acceleration (BLIT) engine (default = 0)"); 2204 module_param(mtrr, bool, 0); 2205 MODULE_PARM_DESC(mtrr, "Use MTRR (default = 0)"); 2206 module_param(extvga, bool, 0); 2207 MODULE_PARM_DESC(extvga, "Enable external VGA connector (default = 0)"); 2208 module_param(sync, bool, 0); 2209 MODULE_PARM_DESC(sync, "wait for accel engine to finish drawing" 2210 " (default = 0)"); 2211 module_param(dcolor, bool, 0); 2212 MODULE_PARM_DESC(dcolor, "use DirectColor visuals" 2213 " (default = 0 = TrueColor)"); 2214 module_param(ddc3, bool, 0); 2215 MODULE_PARM_DESC(ddc3, "Probe DDC bus 3 (default = 0 = no)"); 2216 module_param(mode_option, charp, 0); 2217 MODULE_PARM_DESC(mode_option, "Specify initial video mode"); 2218 2219 MODULE_AUTHOR("Tony A. Daplas"); 2220 MODULE_DESCRIPTION("Framebuffer device for the Intel 810/815 and" 2221 " compatible cards"); 2222 MODULE_LICENSE("GPL"); 2223 i810fb_exit(void)2224 static void __exit i810fb_exit(void) 2225 { 2226 pci_unregister_driver(&i810fb_driver); 2227 } 2228 module_exit(i810fb_exit); 2229 2230 #endif /* MODULE */ 2231 2232 module_init(i810fb_init); 2233