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i810_main.c
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linux-6.19.14/drivers/video/fbdev/i810/i810_main.c
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 */ 79static u32 v_offset_default; /* For 32 MiB Aper size, 8 should be the default */ 80static u32 voffset; 81 82static int i810fb_cursor(struct fb_info *info, struct fb_cursor *cursor); 83static int i810fb_init_pci(struct pci_dev *dev, 84 const struct pci_device_id *entry); 85static void i810fb_remove_pci(struct pci_dev *dev); 86static int i810fb_resume(struct pci_dev *dev); 87static int i810fb_suspend(struct pci_dev *dev, pm_message_t state); 88 89/* Chipset Specific Functions */ 90static int i810fb_set_par (struct fb_info *info); 91static int i810fb_getcolreg (u8 regno, u8 *red, u8 *green, u8 *blue, 92 u8 *transp, struct fb_info *info); 93static int i810fb_setcolreg (unsigned regno, unsigned red, unsigned green, unsigned blue, 94 unsigned transp, struct fb_info *info); 95static int i810fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info); 96static int i810fb_blank (int blank_mode, struct fb_info *info); 97 98/* Initialization */ 99static void i810fb_release_resource (struct fb_info *info, struct i810fb_par *par); 100 101/* PCI */ 102static 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 111static 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 128static 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 137static char *mode_option = NULL; 138static int vram = 4; 139static int bpp = 8; 140static bool mtrr; 141static bool accel; 142static int hsync1; 143static int hsync2; 144static int vsync1; 145static int vsync2; 146static int xres; 147static int yres; 148static int vyres; 149static bool sync; 150static bool extvga; 151static bool dcolor; 152static 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 */ 168static 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 */ 192static 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 */ 211static 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 */ 231static 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 */ 257static 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 */ 300static 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 */ 325static 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 */ 349static 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 */ 368static 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 */ 400static 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 */ 422static 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 441static 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 450static 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 ************************************************************/ 462static 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 482static 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 494static 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 528static 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 543static 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 556static 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 587static 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 609static 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 633static 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 648static 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 665static 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 */ 684static 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 */ 707static 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 */ 773static 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 784static 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 798static 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 820static 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 */ 851static 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 */ 872static 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 */ 941static 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 */ 992static 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 dev_info(&par->dev->dev, "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 dev_err(&par->dev->dev, "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 */ 1088static 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*/ 1137static 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 */ 1200static 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 1240static 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 1260static 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 1282static 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 1377static 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 1390static 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 1435static 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 1456static 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 1479static 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 1546static const struct fb_ops i810fb_ops = { 1547 .owner = THIS_MODULE, 1548 .fb_open = i810fb_open, 1549 .fb_release = i810fb_release, 1550 __FB_DEFAULT_IOMEM_OPS_RDWR, 1551 .fb_check_var = i810fb_check_var, 1552 .fb_set_par = i810fb_set_par, 1553 .fb_setcolreg = i810fb_setcolreg, 1554 .fb_blank = i810fb_blank, 1555 .fb_pan_display = i810fb_pan_display, 1556 .fb_fillrect = i810fb_fillrect, 1557 .fb_copyarea = i810fb_copyarea, 1558 .fb_imageblit = i810fb_imageblit, 1559 .fb_cursor = i810fb_cursor, 1560 .fb_sync = i810fb_sync, 1561 __FB_DEFAULT_IOMEM_OPS_MMAP, 1562}; 1563 1564/*********************************************************************** 1565 * Power Management * 1566 ***********************************************************************/ 1567static int i810fb_suspend(struct pci_dev *dev, pm_message_t mesg) 1568{ 1569 struct fb_info *info = pci_get_drvdata(dev); 1570 struct i810fb_par *par = info->par; 1571 1572 par->cur_state = mesg.event; 1573 1574 switch (mesg.event) { 1575 case PM_EVENT_FREEZE: 1576 case PM_EVENT_PRETHAW: 1577 dev->dev.power.power_state = mesg; 1578 return 0; 1579 } 1580 1581 console_lock(); 1582 fb_set_suspend(info, 1); 1583 1584 if (info->fbops->fb_sync) 1585 info->fbops->fb_sync(info); 1586 1587 i810fb_blank(FB_BLANK_POWERDOWN, info); 1588 agp_unbind_memory(par->i810_gtt.i810_fb_memory); 1589 agp_unbind_memory(par->i810_gtt.i810_cursor_memory); 1590 1591 pci_save_state(dev); 1592 pci_disable_device(dev); 1593 pci_set_power_state(dev, pci_choose_state(dev, mesg)); 1594 console_unlock(); 1595 1596 return 0; 1597} 1598 1599static int i810fb_resume(struct pci_dev *dev) 1600{ 1601 struct fb_info *info = pci_get_drvdata(dev); 1602 struct i810fb_par *par = info->par; 1603 int cur_state = par->cur_state; 1604 1605 par->cur_state = PM_EVENT_ON; 1606 1607 if (cur_state == PM_EVENT_FREEZE) { 1608 pci_set_power_state(dev, PCI_D0); 1609 return 0; 1610 } 1611 1612 console_lock(); 1613 pci_set_power_state(dev, PCI_D0); 1614 pci_restore_state(dev); 1615 1616 if (pci_enable_device(dev)) 1617 goto fail; 1618 1619 pci_set_master(dev); 1620 agp_bind_memory(par->i810_gtt.i810_fb_memory, 1621 par->fb.offset); 1622 agp_bind_memory(par->i810_gtt.i810_cursor_memory, 1623 par->cursor_heap.offset); 1624 i810fb_set_par(info); 1625 fb_set_suspend (info, 0); 1626 info->fbops->fb_blank(VESA_NO_BLANKING, info); 1627fail: 1628 console_unlock(); 1629 return 0; 1630} 1631/*********************************************************************** 1632 * AGP resource allocation * 1633 ***********************************************************************/ 1634 1635static void i810_fix_pointers(struct i810fb_par *par) 1636{ 1637 par->fb.physical = par->aperture.physical+(par->fb.offset << 12); 1638 par->fb.virtual = par->aperture.virtual+(par->fb.offset << 12); 1639 par->iring.physical = par->aperture.physical + 1640 (par->iring.offset << 12); 1641 par->iring.virtual = par->aperture.virtual + 1642 (par->iring.offset << 12); 1643 par->cursor_heap.virtual = par->aperture.virtual+ 1644 (par->cursor_heap.offset << 12); 1645} 1646 1647static void i810_fix_offsets(struct i810fb_par *par) 1648{ 1649 if (vram + 1 > par->aperture.size >> 20) 1650 vram = (par->aperture.size >> 20) - 1; 1651 if (v_offset_default > (par->aperture.size >> 20)) 1652 v_offset_default = (par->aperture.size >> 20); 1653 if (vram + v_offset_default + 1 > par->aperture.size >> 20) 1654 v_offset_default = (par->aperture.size >> 20) - (vram + 1); 1655 1656 par->fb.size = vram << 20; 1657 par->fb.offset = v_offset_default << 20; 1658 par->fb.offset >>= 12; 1659 1660 par->iring.offset = par->fb.offset + (par->fb.size >> 12); 1661 par->iring.size = RINGBUFFER_SIZE; 1662 1663 par->cursor_heap.offset = par->iring.offset + (RINGBUFFER_SIZE >> 12); 1664 par->cursor_heap.size = 4096; 1665} 1666 1667static int i810_alloc_agp_mem(struct fb_info *info) 1668{ 1669 struct i810fb_par *par = info->par; 1670 int size; 1671 struct agp_bridge_data *bridge; 1672 1673 i810_fix_offsets(par); 1674 size = par->fb.size + par->iring.size; 1675 1676 if (!(bridge = agp_backend_acquire(par->dev))) { 1677 dev_warn(&par->dev->dev, "cannot acquire agpgart\n"); 1678 return -ENODEV; 1679 } 1680 if (!(par->i810_gtt.i810_fb_memory = 1681 agp_allocate_memory(bridge, size >> 12, AGP_NORMAL_MEMORY))) { 1682 dev_warn(&par->dev->dev, "can't allocate framebuffer " 1683 "memory\n"); 1684 agp_backend_release(bridge); 1685 return -ENOMEM; 1686 } 1687 if (agp_bind_memory(par->i810_gtt.i810_fb_memory, 1688 par->fb.offset)) { 1689 dev_warn(&par->dev->dev, "can't bind framebuffer memory\n"); 1690 agp_backend_release(bridge); 1691 return -EBUSY; 1692 } 1693 1694 if (!(par->i810_gtt.i810_cursor_memory = 1695 agp_allocate_memory(bridge, par->cursor_heap.size >> 12, 1696 AGP_PHYSICAL_MEMORY))) { 1697 dev_warn(&par->dev->dev, "can't allocate " 1698 "cursor memory\n"); 1699 agp_backend_release(bridge); 1700 return -ENOMEM; 1701 } 1702 if (agp_bind_memory(par->i810_gtt.i810_cursor_memory, 1703 par->cursor_heap.offset)) { 1704 dev_warn(&par->dev->dev, "cannot bind cursor memory\n"); 1705 agp_backend_release(bridge); 1706 return -EBUSY; 1707 } 1708 1709 par->cursor_heap.physical = par->i810_gtt.i810_cursor_memory->physical; 1710 1711 i810_fix_pointers(par); 1712 1713 agp_backend_release(bridge); 1714 1715 return 0; 1716} 1717 1718/*************************************************************** 1719 * Initialization * 1720 ***************************************************************/ 1721 1722/** 1723 * i810_init_monspecs 1724 * @info: pointer to device specific info structure 1725 * 1726 * DESCRIPTION: 1727 * Sets the user monitor's horizontal and vertical 1728 * frequency limits 1729 */ 1730static void i810_init_monspecs(struct fb_info *info) 1731{ 1732 if (!hsync1) 1733 hsync1 = HFMIN; 1734 if (!hsync2) 1735 hsync2 = HFMAX; 1736 if (!info->monspecs.hfmax) 1737 info->monspecs.hfmax = hsync2; 1738 if (!info->monspecs.hfmin) 1739 info->monspecs.hfmin = hsync1; 1740 if (hsync2 < hsync1) 1741 info->monspecs.hfmin = hsync2; 1742 1743 if (!vsync1) 1744 vsync1 = VFMIN; 1745 if (!vsync2) 1746 vsync2 = VFMAX; 1747 if (IS_DVT && vsync1 < 60) 1748 vsync1 = 60; 1749 if (!info->monspecs.vfmax) 1750 info->monspecs.vfmax = vsync2; 1751 if (!info->monspecs.vfmin) 1752 info->monspecs.vfmin = vsync1; 1753 if (vsync2 < vsync1) 1754 info->monspecs.vfmin = vsync2; 1755} 1756 1757/** 1758 * i810_init_defaults - initializes default values to use 1759 * @par: pointer to i810fb_par structure 1760 * @info: pointer to current fb_info structure 1761 */ 1762static void i810_init_defaults(struct i810fb_par *par, struct fb_info *info) 1763{ 1764 mutex_init(&par->open_lock); 1765 1766 if (voffset) 1767 v_offset_default = voffset; 1768 else if (par->aperture.size > 32 * 1024 * 1024) 1769 v_offset_default = 16; 1770 else 1771 v_offset_default = 8; 1772 1773 if (!vram) 1774 vram = 1; 1775 1776 if (accel) 1777 par->dev_flags |= HAS_ACCELERATION; 1778 1779 if (sync) 1780 par->dev_flags |= ALWAYS_SYNC; 1781 1782 par->ddc_num = (ddc3 ? 3 : 2); 1783 1784 if (bpp < 8) 1785 bpp = 8; 1786 1787 par->i810fb_ops = i810fb_ops; 1788 1789 if (xres) 1790 info->var.xres = xres; 1791 else 1792 info->var.xres = 640; 1793 1794 if (yres) 1795 info->var.yres = yres; 1796 else 1797 info->var.yres = 480; 1798 1799 if (!vyres) 1800 vyres = (vram << 20)/(info->var.xres*bpp >> 3); 1801 1802 info->var.yres_virtual = vyres; 1803 info->var.bits_per_pixel = bpp; 1804 1805 if (dcolor) 1806 info->var.nonstd = 1; 1807 1808 if (par->dev_flags & HAS_ACCELERATION) 1809 info->var.accel_flags = 1; 1810 1811 i810_init_monspecs(info); 1812} 1813 1814/** 1815 * i810_init_device - initialize device 1816 * @par: pointer to i810fb_par structure 1817 */ 1818static void i810_init_device(struct i810fb_par *par) 1819{ 1820 u8 reg; 1821 u8 __iomem *mmio = par->mmio_start_virtual; 1822 1823 if (mtrr) 1824 par->wc_cookie= arch_phys_wc_add((u32) par->aperture.physical, 1825 par->aperture.size); 1826 1827 i810_init_cursor(par); 1828 1829 /* mvo: enable external vga-connector (for laptops) */ 1830 if (extvga) { 1831 i810_writel(HVSYNC, mmio, 0); 1832 i810_writel(PWR_CLKC, mmio, 3); 1833 } 1834 1835 pci_read_config_byte(par->dev, 0x50, ®); 1836 reg &= FREQ_MASK; 1837 par->mem_freq = (reg) ? 133 : 100; 1838 1839} 1840 1841static int i810_allocate_pci_resource(struct i810fb_par *par, 1842 const struct pci_device_id *entry) 1843{ 1844 int err; 1845 1846 if ((err = pci_enable_device(par->dev))) { 1847 dev_err(&par->dev->dev, "cannot enable device\n"); 1848 return err; 1849 } 1850 par->res_flags |= PCI_DEVICE_ENABLED; 1851 1852 if (pci_resource_len(par->dev, 0) > 512 * 1024) { 1853 par->aperture.physical = pci_resource_start(par->dev, 0); 1854 par->aperture.size = pci_resource_len(par->dev, 0); 1855 par->mmio_start_phys = pci_resource_start(par->dev, 1); 1856 } else { 1857 par->aperture.physical = pci_resource_start(par->dev, 1); 1858 par->aperture.size = pci_resource_len(par->dev, 1); 1859 par->mmio_start_phys = pci_resource_start(par->dev, 0); 1860 } 1861 if (!par->aperture.size) { 1862 dev_warn(&par->dev->dev, "device is disabled\n"); 1863 return -ENOMEM; 1864 } 1865 1866 if (!request_mem_region(par->aperture.physical, 1867 par->aperture.size, 1868 i810_pci_list[entry->driver_data])) { 1869 dev_warn(&par->dev->dev, "cannot request framebuffer region\n"); 1870 return -ENODEV; 1871 } 1872 par->res_flags |= FRAMEBUFFER_REQ; 1873 1874 par->aperture.virtual = ioremap_wc(par->aperture.physical, 1875 par->aperture.size); 1876 if (!par->aperture.virtual) { 1877 dev_warn(&par->dev->dev, "cannot remap framebuffer region\n"); 1878 return -ENODEV; 1879 } 1880 1881 if (!request_mem_region(par->mmio_start_phys, 1882 MMIO_SIZE, 1883 i810_pci_list[entry->driver_data])) { 1884 dev_warn(&par->dev->dev, "cannot request mmio region\n"); 1885 return -ENODEV; 1886 } 1887 par->res_flags |= MMIO_REQ; 1888 1889 par->mmio_start_virtual = ioremap(par->mmio_start_phys, 1890 MMIO_SIZE); 1891 if (!par->mmio_start_virtual) { 1892 dev_warn(&par->dev->dev, "cannot remap mmio region\n"); 1893 return -ENODEV; 1894 } 1895 1896 return 0; 1897} 1898 1899static void i810fb_find_init_mode(struct fb_info *info) 1900{ 1901 struct fb_videomode mode; 1902 struct fb_var_screeninfo var; 1903 struct fb_monspecs *specs = &info->monspecs; 1904 int found = 0; 1905#ifdef CONFIG_FB_I810_I2C 1906 int i; 1907 int err = 1; 1908 struct i810fb_par *par = info->par; 1909#endif 1910 1911 INIT_LIST_HEAD(&info->modelist); 1912 memset(&mode, 0, sizeof(struct fb_videomode)); 1913 var = info->var; 1914#ifdef CONFIG_FB_I810_I2C 1915 i810_create_i2c_busses(par); 1916 1917 for (i = 0; i < par->ddc_num + 1; i++) { 1918 err = i810_probe_i2c_connector(info, &par->edid, i); 1919 if (!err) 1920 break; 1921 } 1922 1923 if (!err) 1924 dev_info(&par->dev->dev, "DDC probe successful\n"); 1925 1926 fb_edid_to_monspecs(par->edid, specs); 1927 1928 if (specs->modedb == NULL) 1929 dev_info(&par->dev->dev, "Unable to get Mode Database\n"); 1930 1931 fb_videomode_to_modelist(specs->modedb, specs->modedb_len, 1932 &info->modelist); 1933 if (specs->modedb != NULL) { 1934 const struct fb_videomode *m; 1935 1936 if (xres && yres) { 1937 if ((m = fb_find_best_mode(&var, &info->modelist))) { 1938 mode = *m; 1939 found = 1; 1940 } 1941 } 1942 1943 if (!found) { 1944 m = fb_find_best_display(&info->monspecs, &info->modelist); 1945 mode = *m; 1946 found = 1; 1947 } 1948 1949 fb_videomode_to_var(&var, &mode); 1950 } 1951#endif 1952 if (mode_option) 1953 fb_find_mode(&var, info, mode_option, specs->modedb, 1954 specs->modedb_len, (found) ? &mode : NULL, 1955 info->var.bits_per_pixel); 1956 1957 info->var = var; 1958 fb_destroy_modedb(specs->modedb); 1959 specs->modedb = NULL; 1960} 1961 1962#ifndef MODULE 1963static int i810fb_setup(char *options) 1964{ 1965 char *this_opt, *suffix = NULL; 1966 1967 if (!options || !*options) 1968 return 0; 1969 1970 while ((this_opt = strsep(&options, ",")) != NULL) { 1971 if (!strncmp(this_opt, "mtrr", 4)) 1972 mtrr = true; 1973 else if (!strncmp(this_opt, "accel", 5)) 1974 accel = true; 1975 else if (!strncmp(this_opt, "extvga", 6)) 1976 extvga = true; 1977 else if (!strncmp(this_opt, "sync", 4)) 1978 sync = true; 1979 else if (!strncmp(this_opt, "vram:", 5)) 1980 vram = (simple_strtoul(this_opt+5, NULL, 0)); 1981 else if (!strncmp(this_opt, "voffset:", 8)) 1982 voffset = (simple_strtoul(this_opt+8, NULL, 0)); 1983 else if (!strncmp(this_opt, "xres:", 5)) 1984 xres = simple_strtoul(this_opt+5, NULL, 0); 1985 else if (!strncmp(this_opt, "yres:", 5)) 1986 yres = simple_strtoul(this_opt+5, NULL, 0); 1987 else if (!strncmp(this_opt, "vyres:", 6)) 1988 vyres = simple_strtoul(this_opt+6, NULL, 0); 1989 else if (!strncmp(this_opt, "bpp:", 4)) 1990 bpp = simple_strtoul(this_opt+4, NULL, 0); 1991 else if (!strncmp(this_opt, "hsync1:", 7)) { 1992 hsync1 = simple_strtoul(this_opt+7, &suffix, 0); 1993 if (strncmp(suffix, "H", 1)) 1994 hsync1 *= 1000; 1995 } else if (!strncmp(this_opt, "hsync2:", 7)) { 1996 hsync2 = simple_strtoul(this_opt+7, &suffix, 0); 1997 if (strncmp(suffix, "H", 1)) 1998 hsync2 *= 1000; 1999 } else if (!strncmp(this_opt, "vsync1:", 7)) 2000 vsync1 = simple_strtoul(this_opt+7, NULL, 0); 2001 else if (!strncmp(this_opt, "vsync2:", 7)) 2002 vsync2 = simple_strtoul(this_opt+7, NULL, 0); 2003 else if (!strncmp(this_opt, "dcolor", 6)) 2004 dcolor = true; 2005 else if (!strncmp(this_opt, "ddc3", 4)) 2006 ddc3 = true; 2007 else 2008 mode_option = this_opt; 2009 } 2010 return 0; 2011} 2012#endif 2013 2014static int i810fb_init_pci(struct pci_dev *dev, 2015 const struct pci_device_id *entry) 2016{ 2017 struct fb_info *info; 2018 struct i810fb_par *par = NULL; 2019 struct fb_videomode mode; 2020 int err = -1, vfreq, hfreq, pixclock; 2021 2022 err = aperture_remove_conflicting_pci_devices(dev, "i810fb"); 2023 if (err) 2024 return err; 2025 2026 info = framebuffer_alloc(sizeof(struct i810fb_par), &dev->dev); 2027 if (!info) 2028 return -ENOMEM; 2029 2030 par = info->par; 2031 par->dev = dev; 2032 2033 if (!(info->pixmap.addr = kzalloc(8*1024, GFP_KERNEL))) { 2034 i810fb_release_resource(info, par); 2035 return -ENOMEM; 2036 } 2037 info->pixmap.size = 8*1024; 2038 info->pixmap.buf_align = 8; 2039 info->pixmap.access_align = 32; 2040 info->pixmap.flags = FB_PIXMAP_SYSTEM; 2041 2042 if ((err = i810_allocate_pci_resource(par, entry))) { 2043 i810fb_release_resource(info, par); 2044 return err; 2045 } 2046 2047 i810_init_defaults(par, info); 2048 2049 if ((err = i810_alloc_agp_mem(info))) { 2050 i810fb_release_resource(info, par); 2051 return err; 2052 } 2053 2054 i810_init_device(par); 2055 2056 info->screen_base = par->fb.virtual; 2057 info->fbops = &par->i810fb_ops; 2058 info->pseudo_palette = par->pseudo_palette; 2059 fb_alloc_cmap(&info->cmap, 256, 0); 2060 i810fb_find_init_mode(info); 2061 2062 if ((err = info->fbops->fb_check_var(&info->var, info))) { 2063 i810fb_release_resource(info, par); 2064 return err; 2065 } 2066 2067 fb_var_to_videomode(&mode, &info->var); 2068 fb_add_videomode(&mode, &info->modelist); 2069 2070 i810fb_init_ringbuffer(info); 2071 err = register_framebuffer(info); 2072 2073 if (err < 0) { 2074 i810fb_release_resource(info, par); 2075 dev_warn(&par->dev->dev, "cannot register framebuffer device\n"); 2076 return err; 2077 } 2078 2079 pci_set_drvdata(dev, info); 2080 pixclock = 1000000000/(info->var.pixclock); 2081 pixclock *= 1000; 2082 hfreq = pixclock/(info->var.xres + info->var.left_margin + 2083 info->var.hsync_len + info->var.right_margin); 2084 vfreq = hfreq/(info->var.yres + info->var.upper_margin + 2085 info->var.vsync_len + info->var.lower_margin); 2086 2087 dev_info(&par->dev->dev, "fb%d : %s v%d.%d.%d%s\n" 2088 "Video RAM : %dK\n" 2089 "Monitor : H: %d-%d KHz V: %d-%d Hz\n" 2090 "Mode : %dx%d-%dbpp@%dHz\n", 2091 info->node, 2092 i810_pci_list[entry->driver_data], 2093 VERSION_MAJOR, VERSION_MINOR, VERSION_TEENIE, BRANCH_VERSION, 2094 (int) par->fb.size>>10, info->monspecs.hfmin/1000, 2095 info->monspecs.hfmax/1000, info->monspecs.vfmin, 2096 info->monspecs.vfmax, info->var.xres, 2097 info->var.yres, info->var.bits_per_pixel, vfreq); 2098 return 0; 2099} 2100 2101/*************************************************************** 2102 * De-initialization * 2103 ***************************************************************/ 2104 2105static void i810fb_release_resource(struct fb_info *info, 2106 struct i810fb_par *par) 2107{ 2108 struct gtt_data *gtt = &par->i810_gtt; 2109 arch_phys_wc_del(par->wc_cookie); 2110 2111 i810_delete_i2c_busses(par); 2112 2113 if (par->i810_gtt.i810_cursor_memory) 2114 agp_free_memory(gtt->i810_cursor_memory); 2115 if (par->i810_gtt.i810_fb_memory) 2116 agp_free_memory(gtt->i810_fb_memory); 2117 2118 if (par->mmio_start_virtual) 2119 iounmap(par->mmio_start_virtual); 2120 if (par->aperture.virtual) 2121 iounmap(par->aperture.virtual); 2122 kfree(par->edid); 2123 if (par->res_flags & FRAMEBUFFER_REQ) 2124 release_mem_region(par->aperture.physical, 2125 par->aperture.size); 2126 if (par->res_flags & MMIO_REQ) 2127 release_mem_region(par->mmio_start_phys, MMIO_SIZE); 2128 2129 framebuffer_release(info); 2130 2131} 2132 2133static void i810fb_remove_pci(struct pci_dev *dev) 2134{ 2135 struct fb_info *info = pci_get_drvdata(dev); 2136 struct i810fb_par *par = info->par; 2137 2138 unregister_framebuffer(info); 2139 i810fb_release_resource(info, par); 2140 dev_info(&par->dev->dev, "unloaded i810 framebuffer device\n"); 2141} 2142 2143#ifndef MODULE 2144static int i810fb_init(void) 2145{ 2146 char *option = NULL; 2147 2148 if (fb_modesetting_disabled("i810fb")) 2149 return -ENODEV; 2150 2151 if (fb_get_options("i810fb", &option)) 2152 return -ENODEV; 2153 i810fb_setup(option); 2154 2155 return pci_register_driver(&i810fb_driver); 2156} 2157#endif 2158 2159/********************************************************************* 2160 * Modularization * 2161 *********************************************************************/ 2162 2163#ifdef MODULE 2164 2165static int i810fb_init(void) 2166{ 2167 if (fb_modesetting_disabled("i810fb")) 2168 return -ENODEV; 2169 2170 hsync1 *= 1000; 2171 hsync2 *= 1000; 2172 2173 return pci_register_driver(&i810fb_driver); 2174} 2175 2176module_param(vram, int, 0); 2177MODULE_PARM_DESC(vram, "System RAM to allocate to framebuffer in MiB" 2178 " (default=4)"); 2179module_param(voffset, int, 0); 2180MODULE_PARM_DESC(voffset, "at what offset to place start of framebuffer " 2181 "memory (0 to maximum aperture size), in MiB (default = 48)"); 2182module_param(bpp, int, 0); 2183MODULE_PARM_DESC(bpp, "Color depth for display in bits per pixel" 2184 " (default = 8)"); 2185module_param(xres, int, 0); 2186MODULE_PARM_DESC(xres, "Horizontal resolution in pixels (default = 640)"); 2187module_param(yres, int, 0); 2188MODULE_PARM_DESC(yres, "Vertical resolution in scanlines (default = 480)"); 2189module_param(vyres,int, 0); 2190MODULE_PARM_DESC(vyres, "Virtual vertical resolution in scanlines" 2191 " (default = 480)"); 2192module_param(hsync1, int, 0); 2193MODULE_PARM_DESC(hsync1, "Minimum horizontal frequency of monitor in KHz" 2194 " (default = 29)"); 2195module_param(hsync2, int, 0); 2196MODULE_PARM_DESC(hsync2, "Maximum horizontal frequency of monitor in KHz" 2197 " (default = 30)"); 2198module_param(vsync1, int, 0); 2199MODULE_PARM_DESC(vsync1, "Minimum vertical frequency of monitor in Hz" 2200 " (default = 50)"); 2201module_param(vsync2, int, 0); 2202MODULE_PARM_DESC(vsync2, "Maximum vertical frequency of monitor in Hz" 2203 " (default = 60)"); 2204module_param(accel, bool, 0); 2205MODULE_PARM_DESC(accel, "Use Acceleration (BLIT) engine (default = 0)"); 2206module_param(mtrr, bool, 0); 2207MODULE_PARM_DESC(mtrr, "Use MTRR (default = 0)"); 2208module_param(extvga, bool, 0); 2209MODULE_PARM_DESC(extvga, "Enable external VGA connector (default = 0)"); 2210module_param(sync, bool, 0); 2211MODULE_PARM_DESC(sync, "wait for accel engine to finish drawing" 2212 " (default = 0)"); 2213module_param(dcolor, bool, 0); 2214MODULE_PARM_DESC(dcolor, "use DirectColor visuals" 2215 " (default = 0 = TrueColor)"); 2216module_param(ddc3, bool, 0); 2217MODULE_PARM_DESC(ddc3, "Probe DDC bus 3 (default = 0 = no)"); 2218module_param(mode_option, charp, 0); 2219MODULE_PARM_DESC(mode_option, "Specify initial video mode"); 2220 2221MODULE_AUTHOR("Tony A. Daplas"); 2222MODULE_DESCRIPTION("Framebuffer device for the Intel 810/815 and" 2223 " compatible cards"); 2224MODULE_LICENSE("GPL"); 2225 2226static void __exit i810fb_exit(void) 2227{ 2228 pci_unregister_driver(&i810fb_driver); 2229} 2230module_exit(i810fb_exit); 2231 2232#endif /* MODULE */ 2233 2234module_init(i810fb_init);
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