2 * linux/drivers/video/i810_main.c -- Intel 810 frame buffer device
4 * Copyright (C) 2001 Antonino Daplas<adaplas@pol.net>
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
13 * Fredrik Andersson <krueger@shell.linux.se> - alpha testing of
16 * Brad Corrion <bcorrion@web-co.com> - alpha testing of customized
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.
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
31 #include <linux/module.h>
32 #include <linux/kernel.h>
33 #include <linux/errno.h>
34 #include <linux/string.h>
36 #include <linux/slab.h>
38 #include <linux/init.h>
39 #include <linux/pci.h>
40 #include <linux/pci_ids.h>
41 #include <linux/resource.h>
42 #include <linux/unistd.h>
43 #include <linux/console.h>
47 #include <asm/div64.h>
50 #include "i810_regs.h"
52 #include "i810_main.h"
55 * voffset - framebuffer offset in MiB from aperture start address. In order for
56 * the driver to work with X, we must try to use memory holes left untouched by X. The
57 * following table lists where X's different surfaces start at.
59 * ---------------------------------------------
60 * : : 64 MiB : 32 MiB :
61 * ----------------------------------------------
62 * : FrontBuffer : 0 : 0 :
63 * : DepthBuffer : 48 : 16 :
64 * : BackBuffer : 56 : 24 :
65 * ----------------------------------------------
67 * So for chipsets with 64 MiB Aperture sizes, 32 MiB for v_offset is okay, allowing up to
68 * 15 + 1 MiB of Framebuffer memory. For 32 MiB Aperture sizes, a v_offset of 8 MiB should
69 * work, allowing 7 + 1 MiB of Framebuffer memory.
70 * Note, the size of the hole may change depending on how much memory you allocate to X,
71 * and how the memory is split up between these surfaces.
73 * Note: Anytime the DepthBuffer or FrontBuffer is overlapped, X would still run but with
74 * DRI disabled. But if the Frontbuffer is overlapped, X will fail to load.
76 * Experiment with v_offset to find out which works best for you.
78 static u32 v_offset_default; /* For 32 MiB Aper size, 8 should be the default */
81 static int i810fb_cursor(struct fb_info *info, struct fb_cursor *cursor);
82 static int i810fb_init_pci(struct pci_dev *dev,
83 const struct pci_device_id *entry);
84 static void __exit i810fb_remove_pci(struct pci_dev *dev);
85 static int i810fb_resume(struct pci_dev *dev);
86 static int i810fb_suspend(struct pci_dev *dev, pm_message_t state);
88 /* Chipset Specific Functions */
89 static int i810fb_set_par (struct fb_info *info);
90 static int i810fb_getcolreg (u8 regno, u8 *red, u8 *green, u8 *blue,
91 u8 *transp, struct fb_info *info);
92 static int i810fb_setcolreg (unsigned regno, unsigned red, unsigned green, unsigned blue,
93 unsigned transp, struct fb_info *info);
94 static int i810fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info);
95 static int i810fb_blank (int blank_mode, struct fb_info *info);
98 static void i810fb_release_resource (struct fb_info *info, struct i810fb_par *par);
101 static const char * const i810_pci_list[] = {
102 "Intel(R) 810 Framebuffer Device" ,
103 "Intel(R) 810-DC100 Framebuffer Device" ,
104 "Intel(R) 810E Framebuffer Device" ,
105 "Intel(R) 815 (Internal Graphics 100Mhz FSB) Framebuffer Device" ,
106 "Intel(R) 815 (Internal Graphics only) Framebuffer Device" ,
107 "Intel(R) 815 (Internal Graphics with AGP) Framebuffer Device"
110 static struct pci_device_id i810fb_pci_tbl[] = {
111 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82810_IG1,
112 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
113 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82810_IG3,
114 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
115 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82810E_IG,
116 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 },
117 /* mvo: added i815 PCI-ID */
118 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82815_100,
119 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 },
120 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82815_NOAGP,
121 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
122 { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82815_CGC,
123 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 },
127 static struct pci_driver i810fb_driver = {
129 .id_table = i810fb_pci_tbl,
130 .probe = i810fb_init_pci,
131 .remove = __exit_p(i810fb_remove_pci),
132 .suspend = i810fb_suspend,
133 .resume = i810fb_resume,
136 static char *mode_option = NULL;
153 /*------------------------------------------------------------*/
155 /**************************************************************
156 * Hardware Low Level Routines *
157 **************************************************************/
160 * i810_screen_off - turns off/on display
161 * @mmio: address of register space
165 * Blanks/unblanks the display
167 static void i810_screen_off(u8 __iomem *mmio, u8 mode)
169 u32 count = WAIT_COUNT;
172 i810_writeb(SR_INDEX, mmio, SR01);
173 val = i810_readb(SR_DATA, mmio);
174 val = (mode == OFF) ? val | SCR_OFF :
177 while((i810_readw(DISP_SL, mmio) & 0xFFF) && count--);
178 i810_writeb(SR_INDEX, mmio, SR01);
179 i810_writeb(SR_DATA, mmio, val);
183 * i810_dram_off - turns off/on dram refresh
184 * @mmio: address of register space
188 * Turns off DRAM refresh. Must be off for only 2 vsyncs
189 * before data becomes corrupt
191 static void i810_dram_off(u8 __iomem *mmio, u8 mode)
195 val = i810_readb(DRAMCH, mmio);
197 val = (mode == OFF) ? val : val | DRAM_ON;
198 i810_writeb(DRAMCH, mmio, val);
202 * i810_protect_regs - allows rw/ro mode of certain VGA registers
203 * @mmio: address of register space
204 * @mode: protect/unprotect
207 * The IBM VGA standard allows protection of certain VGA registers.
208 * This will protect or unprotect them.
210 static void i810_protect_regs(u8 __iomem *mmio, int mode)
214 i810_writeb(CR_INDEX_CGA, mmio, CR11);
215 reg = i810_readb(CR_DATA_CGA, mmio);
216 reg = (mode == OFF) ? reg & ~0x80 :
219 i810_writeb(CR_INDEX_CGA, mmio, CR11);
220 i810_writeb(CR_DATA_CGA, mmio, reg);
224 * i810_load_pll - loads values for the hardware PLL clock
225 * @par: pointer to i810fb_par structure
228 * Loads the P, M, and N registers.
230 static void i810_load_pll(struct i810fb_par *par)
233 u8 __iomem *mmio = par->mmio_start_virtual;
235 tmp1 = par->regs.M | par->regs.N << 16;
236 tmp2 = i810_readl(DCLK_2D, mmio);
238 i810_writel(DCLK_2D, mmio, tmp1 | tmp2);
241 tmp2 = i810_readl(DCLK_0DS, mmio);
242 tmp2 &= ~(P_OR << 16);
243 i810_writel(DCLK_0DS, mmio, (tmp1 << 16) | tmp2);
245 i810_writeb(MSR_WRITE, mmio, par->regs.msr | 0xC8 | 1);
250 * i810_load_vga - load standard VGA registers
251 * @par: pointer to i810fb_par structure
254 * Load values to VGA registers
256 static void i810_load_vga(struct i810fb_par *par)
258 u8 __iomem *mmio = par->mmio_start_virtual;
261 i810_writeb(CR_INDEX_CGA, mmio, CR70);
262 i810_writeb(CR_DATA_CGA, mmio, par->interlace);
264 i810_writeb(CR_INDEX_CGA, mmio, CR00);
265 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr00);
266 i810_writeb(CR_INDEX_CGA, mmio, CR01);
267 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr01);
268 i810_writeb(CR_INDEX_CGA, mmio, CR02);
269 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr02);
270 i810_writeb(CR_INDEX_CGA, mmio, CR03);
271 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr03);
272 i810_writeb(CR_INDEX_CGA, mmio, CR04);
273 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr04);
274 i810_writeb(CR_INDEX_CGA, mmio, CR05);
275 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr05);
276 i810_writeb(CR_INDEX_CGA, mmio, CR06);
277 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr06);
278 i810_writeb(CR_INDEX_CGA, mmio, CR09);
279 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr09);
280 i810_writeb(CR_INDEX_CGA, mmio, CR10);
281 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr10);
282 i810_writeb(CR_INDEX_CGA, mmio, CR11);
283 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr11);
284 i810_writeb(CR_INDEX_CGA, mmio, CR12);
285 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr12);
286 i810_writeb(CR_INDEX_CGA, mmio, CR15);
287 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr15);
288 i810_writeb(CR_INDEX_CGA, mmio, CR16);
289 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr16);
293 * i810_load_vgax - load extended VGA registers
294 * @par: pointer to i810fb_par structure
297 * Load values to extended VGA registers
299 static void i810_load_vgax(struct i810fb_par *par)
301 u8 __iomem *mmio = par->mmio_start_virtual;
303 i810_writeb(CR_INDEX_CGA, mmio, CR30);
304 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr30);
305 i810_writeb(CR_INDEX_CGA, mmio, CR31);
306 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr31);
307 i810_writeb(CR_INDEX_CGA, mmio, CR32);
308 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr32);
309 i810_writeb(CR_INDEX_CGA, mmio, CR33);
310 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr33);
311 i810_writeb(CR_INDEX_CGA, mmio, CR35);
312 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr35);
313 i810_writeb(CR_INDEX_CGA, mmio, CR39);
314 i810_writeb(CR_DATA_CGA, mmio, par->regs.cr39);
318 * i810_load_2d - load grahics registers
319 * @par: pointer to i810fb_par structure
322 * Load values to graphics registers
324 static void i810_load_2d(struct i810fb_par *par)
328 u8 __iomem *mmio = par->mmio_start_virtual;
330 i810_writel(FW_BLC, mmio, par->watermark);
331 tmp = i810_readl(PIXCONF, mmio);
333 i810_writel(PIXCONF, mmio, tmp);
335 i810_writel(OVRACT, mmio, par->ovract);
337 i810_writeb(GR_INDEX, mmio, GR10);
338 tmp8 = i810_readb(GR_DATA, mmio);
340 i810_writeb(GR_INDEX, mmio, GR10);
341 i810_writeb(GR_DATA, mmio, tmp8);
345 * i810_hires - enables high resolution mode
346 * @mmio: address of register space
348 static void i810_hires(u8 __iomem *mmio)
352 i810_writeb(CR_INDEX_CGA, mmio, CR80);
353 val = i810_readb(CR_DATA_CGA, mmio);
354 i810_writeb(CR_INDEX_CGA, mmio, CR80);
355 i810_writeb(CR_DATA_CGA, mmio, val | 1);
356 /* Stop LCD displays from flickering */
357 i810_writel(MEM_MODE, mmio, i810_readl(MEM_MODE, mmio) | 4);
361 * i810_load_pitch - loads the characters per line of the display
362 * @par: pointer to i810fb_par structure
365 * Loads the characters per line
367 static void i810_load_pitch(struct i810fb_par *par)
371 u8 __iomem *mmio = par->mmio_start_virtual;
373 pitch = par->pitch >> 3;
374 i810_writeb(SR_INDEX, mmio, SR01);
375 val = i810_readb(SR_DATA, mmio);
378 i810_writeb(SR_INDEX, mmio, SR01);
379 i810_writeb(SR_DATA, mmio, val);
382 i810_writeb(CR_INDEX_CGA, mmio, CR13);
383 i810_writeb(CR_DATA_CGA, mmio, (u8) tmp);
386 i810_writeb(CR_INDEX_CGA, mmio, CR41);
387 val = i810_readb(CR_DATA_CGA, mmio) & ~0x0F;
388 i810_writeb(CR_INDEX_CGA, mmio, CR41);
389 i810_writeb(CR_DATA_CGA, mmio, (u8) tmp | val);
393 * i810_load_color - loads the color depth of the display
394 * @par: pointer to i810fb_par structure
397 * Loads the color depth of the display and the graphics engine
399 static void i810_load_color(struct i810fb_par *par)
401 u8 __iomem *mmio = par->mmio_start_virtual;
405 reg1 = i810_readl(PIXCONF, mmio) & ~(0xF0000 | 1 << 27);
406 reg2 = i810_readw(BLTCNTL, mmio) & ~0x30;
408 reg1 |= 0x8000 | par->pixconf;
409 reg2 |= par->bltcntl;
410 i810_writel(PIXCONF, mmio, reg1);
411 i810_writew(BLTCNTL, mmio, reg2);
415 * i810_load_regs - loads all registers for the mode
416 * @par: pointer to i810fb_par structure
421 static void i810_load_regs(struct i810fb_par *par)
423 u8 __iomem *mmio = par->mmio_start_virtual;
425 i810_screen_off(mmio, OFF);
426 i810_protect_regs(mmio, OFF);
427 i810_dram_off(mmio, OFF);
431 i810_dram_off(mmio, ON);
434 i810_screen_off(mmio, ON);
435 i810_protect_regs(mmio, ON);
436 i810_load_color(par);
437 i810_load_pitch(par);
440 static void i810_write_dac(u8 regno, u8 red, u8 green, u8 blue,
443 i810_writeb(CLUT_INDEX_WRITE, mmio, regno);
444 i810_writeb(CLUT_DATA, mmio, red);
445 i810_writeb(CLUT_DATA, mmio, green);
446 i810_writeb(CLUT_DATA, mmio, blue);
449 static void i810_read_dac(u8 regno, u8 *red, u8 *green, u8 *blue,
452 i810_writeb(CLUT_INDEX_READ, mmio, regno);
453 *red = i810_readb(CLUT_DATA, mmio);
454 *green = i810_readb(CLUT_DATA, mmio);
455 *blue = i810_readb(CLUT_DATA, mmio);
458 /************************************************************
459 * VGA State Restore *
460 ************************************************************/
461 static void i810_restore_pll(struct i810fb_par *par)
464 u8 __iomem *mmio = par->mmio_start_virtual;
466 tmp1 = par->hw_state.dclk_2d;
467 tmp2 = i810_readl(DCLK_2D, mmio);
470 i810_writel(DCLK_2D, mmio, tmp1 | tmp2);
472 tmp1 = par->hw_state.dclk_1d;
473 tmp2 = i810_readl(DCLK_1D, mmio);
476 i810_writel(DCLK_1D, mmio, tmp1 | tmp2);
478 i810_writel(DCLK_0DS, mmio, par->hw_state.dclk_0ds);
481 static void i810_restore_dac(struct i810fb_par *par)
484 u8 __iomem *mmio = par->mmio_start_virtual;
486 tmp1 = par->hw_state.pixconf;
487 tmp2 = i810_readl(PIXCONF, mmio);
490 i810_writel(PIXCONF, mmio, tmp1 | tmp2);
493 static void i810_restore_vgax(struct i810fb_par *par)
496 u8 __iomem *mmio = par->mmio_start_virtual;
498 for (i = 0; i < 4; i++) {
499 i810_writeb(CR_INDEX_CGA, mmio, CR30+i);
500 i810_writeb(CR_DATA_CGA, mmio, *(&(par->hw_state.cr30) + i));
502 i810_writeb(CR_INDEX_CGA, mmio, CR35);
503 i810_writeb(CR_DATA_CGA, mmio, par->hw_state.cr35);
504 i810_writeb(CR_INDEX_CGA, mmio, CR39);
505 i810_writeb(CR_DATA_CGA, mmio, par->hw_state.cr39);
506 i810_writeb(CR_INDEX_CGA, mmio, CR41);
507 i810_writeb(CR_DATA_CGA, mmio, par->hw_state.cr39);
509 /*restore interlace*/
510 i810_writeb(CR_INDEX_CGA, mmio, CR70);
511 i = par->hw_state.cr70;
513 j = i810_readb(CR_DATA_CGA, mmio);
514 i810_writeb(CR_INDEX_CGA, mmio, CR70);
515 i810_writeb(CR_DATA_CGA, mmio, j | i);
517 i810_writeb(CR_INDEX_CGA, mmio, CR80);
518 i810_writeb(CR_DATA_CGA, mmio, par->hw_state.cr80);
519 i810_writeb(MSR_WRITE, mmio, par->hw_state.msr);
520 i810_writeb(SR_INDEX, mmio, SR01);
521 i = (par->hw_state.sr01) & ~0xE0 ;
522 j = i810_readb(SR_DATA, mmio) & 0xE0;
523 i810_writeb(SR_INDEX, mmio, SR01);
524 i810_writeb(SR_DATA, mmio, i | j);
527 static void i810_restore_vga(struct i810fb_par *par)
530 u8 __iomem *mmio = par->mmio_start_virtual;
532 for (i = 0; i < 10; i++) {
533 i810_writeb(CR_INDEX_CGA, mmio, CR00 + i);
534 i810_writeb(CR_DATA_CGA, mmio, *((&par->hw_state.cr00) + i));
536 for (i = 0; i < 8; i++) {
537 i810_writeb(CR_INDEX_CGA, mmio, CR10 + i);
538 i810_writeb(CR_DATA_CGA, mmio, *((&par->hw_state.cr10) + i));
542 static void i810_restore_addr_map(struct i810fb_par *par)
545 u8 __iomem *mmio = par->mmio_start_virtual;
547 i810_writeb(GR_INDEX, mmio, GR10);
548 tmp = i810_readb(GR_DATA, mmio);
549 tmp &= ADDR_MAP_MASK;
550 tmp |= par->hw_state.gr10;
551 i810_writeb(GR_INDEX, mmio, GR10);
552 i810_writeb(GR_DATA, mmio, tmp);
555 static void i810_restore_2d(struct i810fb_par *par)
559 u8 __iomem *mmio = par->mmio_start_virtual;
561 tmp_word = i810_readw(BLTCNTL, mmio);
562 tmp_word &= ~(3 << 4);
563 tmp_word |= par->hw_state.bltcntl;
564 i810_writew(BLTCNTL, mmio, tmp_word);
566 i810_dram_off(mmio, OFF);
567 i810_writel(PIXCONF, mmio, par->hw_state.pixconf);
568 i810_dram_off(mmio, ON);
570 tmp_word = i810_readw(HWSTAM, mmio);
572 tmp_word |= par->hw_state.hwstam;
573 i810_writew(HWSTAM, mmio, tmp_word);
575 tmp_long = i810_readl(FW_BLC, mmio);
576 tmp_long &= FW_BLC_MASK;
577 tmp_long |= par->hw_state.fw_blc;
578 i810_writel(FW_BLC, mmio, tmp_long);
580 i810_writel(HWS_PGA, mmio, par->hw_state.hws_pga);
581 i810_writew(IER, mmio, par->hw_state.ier);
582 i810_writew(IMR, mmio, par->hw_state.imr);
583 i810_writel(DPLYSTAS, mmio, par->hw_state.dplystas);
586 static void i810_restore_vga_state(struct i810fb_par *par)
588 u8 __iomem *mmio = par->mmio_start_virtual;
590 i810_screen_off(mmio, OFF);
591 i810_protect_regs(mmio, OFF);
592 i810_dram_off(mmio, OFF);
593 i810_restore_pll(par);
594 i810_restore_dac(par);
595 i810_restore_vga(par);
596 i810_restore_vgax(par);
597 i810_restore_addr_map(par);
598 i810_dram_off(mmio, ON);
599 i810_restore_2d(par);
600 i810_screen_off(mmio, ON);
601 i810_protect_regs(mmio, ON);
604 /***********************************************************************
606 ***********************************************************************/
608 static void i810_save_vgax(struct i810fb_par *par)
611 u8 __iomem *mmio = par->mmio_start_virtual;
613 for (i = 0; i < 4; i++) {
614 i810_writeb(CR_INDEX_CGA, mmio, CR30 + i);
615 *(&(par->hw_state.cr30) + i) = i810_readb(CR_DATA_CGA, mmio);
617 i810_writeb(CR_INDEX_CGA, mmio, CR35);
618 par->hw_state.cr35 = i810_readb(CR_DATA_CGA, mmio);
619 i810_writeb(CR_INDEX_CGA, mmio, CR39);
620 par->hw_state.cr39 = i810_readb(CR_DATA_CGA, mmio);
621 i810_writeb(CR_INDEX_CGA, mmio, CR41);
622 par->hw_state.cr41 = i810_readb(CR_DATA_CGA, mmio);
623 i810_writeb(CR_INDEX_CGA, mmio, CR70);
624 par->hw_state.cr70 = i810_readb(CR_DATA_CGA, mmio);
625 par->hw_state.msr = i810_readb(MSR_READ, mmio);
626 i810_writeb(CR_INDEX_CGA, mmio, CR80);
627 par->hw_state.cr80 = i810_readb(CR_DATA_CGA, mmio);
628 i810_writeb(SR_INDEX, mmio, SR01);
629 par->hw_state.sr01 = i810_readb(SR_DATA, mmio);
632 static void i810_save_vga(struct i810fb_par *par)
635 u8 __iomem *mmio = par->mmio_start_virtual;
637 for (i = 0; i < 10; i++) {
638 i810_writeb(CR_INDEX_CGA, mmio, CR00 + i);
639 *((&par->hw_state.cr00) + i) = i810_readb(CR_DATA_CGA, mmio);
641 for (i = 0; i < 8; i++) {
642 i810_writeb(CR_INDEX_CGA, mmio, CR10 + i);
643 *((&par->hw_state.cr10) + i) = i810_readb(CR_DATA_CGA, mmio);
647 static void i810_save_2d(struct i810fb_par *par)
649 u8 __iomem *mmio = par->mmio_start_virtual;
651 par->hw_state.dclk_2d = i810_readl(DCLK_2D, mmio);
652 par->hw_state.dclk_1d = i810_readl(DCLK_1D, mmio);
653 par->hw_state.dclk_0ds = i810_readl(DCLK_0DS, mmio);
654 par->hw_state.pixconf = i810_readl(PIXCONF, mmio);
655 par->hw_state.fw_blc = i810_readl(FW_BLC, mmio);
656 par->hw_state.bltcntl = i810_readw(BLTCNTL, mmio);
657 par->hw_state.hwstam = i810_readw(HWSTAM, mmio);
658 par->hw_state.hws_pga = i810_readl(HWS_PGA, mmio);
659 par->hw_state.ier = i810_readw(IER, mmio);
660 par->hw_state.imr = i810_readw(IMR, mmio);
661 par->hw_state.dplystas = i810_readl(DPLYSTAS, mmio);
664 static void i810_save_vga_state(struct i810fb_par *par)
671 /************************************************************
673 ************************************************************/
675 * get_line_length - calculates buffer pitch in bytes
676 * @par: pointer to i810fb_par structure
677 * @xres_virtual: virtual resolution of the frame
678 * @bpp: bits per pixel
681 * Calculates buffer pitch in bytes.
683 static u32 get_line_length(struct i810fb_par *par, int xres_virtual, int bpp)
687 length = xres_virtual*bpp;
688 length = (length+31)&-32;
694 * i810_calc_dclk - calculates the P, M, and N values of a pixelclock value
695 * @freq: target pixelclock in picoseconds
696 * @m: where to write M register
697 * @n: where to write N register
698 * @p: where to write P register
701 * Based on the formula Freq_actual = (4*M*Freq_ref)/(N^P)
702 * Repeatedly computes the Freq until the actual Freq is equal to
703 * the target Freq or until the loop count is zero. In the latter
704 * case, the actual frequency nearest the target will be used.
706 static void i810_calc_dclk(u32 freq, u32 *m, u32 *n, u32 *p)
708 u32 m_reg, n_reg, p_divisor, n_target_max;
709 u32 m_target, n_target, p_target, n_best, m_best, mod;
710 u32 f_out, target_freq, diff = 0, mod_min, diff_min;
712 diff_min = mod_min = 0xFFFFFFFF;
713 n_best = m_best = m_target = f_out = 0;
719 * find P such that target freq is 16x reference freq (Hz).
723 while(!((1000000 * p_divisor)/(16 * 24 * target_freq)) &&
729 n_reg = m_reg = n_target = 3;
730 while (diff_min && mod_min && (n_target < n_target_max)) {
731 f_out = (p_divisor * n_reg * 1000000)/(4 * 24 * m_reg);
732 mod = (p_divisor * n_reg * 1000000) % (4 * 24 * m_reg);
735 if (f_out <= target_freq) {
737 diff = target_freq - f_out;
740 diff = f_out - target_freq;
743 if (diff_min > diff) {
749 if (!diff && mod_min > mod) {
755 if (m) *m = (m_best - 2) & 0x3FF;
756 if (n) *n = (n_best - 2) & 0x3FF;
757 if (p) *p = (p_target << 4);
760 /*************************************************************
761 * Hardware Cursor Routines *
762 *************************************************************/
765 * i810_enable_cursor - show or hide the hardware cursor
766 * @mmio: address of register space
767 * @mode: show (1) or hide (0)
770 * Shows or hides the hardware cursor
772 static void i810_enable_cursor(u8 __iomem *mmio, int mode)
776 temp = i810_readl(PIXCONF, mmio);
777 temp = (mode == ON) ? temp | CURSOR_ENABLE_MASK :
778 temp & ~CURSOR_ENABLE_MASK;
780 i810_writel(PIXCONF, mmio, temp);
783 static void i810_reset_cursor_image(struct i810fb_par *par)
785 u8 __iomem *addr = par->cursor_heap.virtual;
788 for (i = 64; i--; ) {
789 for (j = 0; j < 8; j++) {
790 i810_writeb(j, addr, 0xff);
791 i810_writeb(j+8, addr, 0x00);
797 static void i810_load_cursor_image(int width, int height, u8 *data,
798 struct i810fb_par *par)
800 u8 __iomem *addr = par->cursor_heap.virtual;
801 int i, j, w = width/8;
802 int mod = width % 8, t_mask, d_mask;
804 t_mask = 0xff >> mod;
805 d_mask = ~(0xff >> mod);
806 for (i = height; i--; ) {
807 for (j = 0; j < w; j++) {
808 i810_writeb(j+0, addr, 0x00);
809 i810_writeb(j+8, addr, *data++);
812 i810_writeb(j+0, addr, t_mask);
813 i810_writeb(j+8, addr, *data++ & d_mask);
819 static void i810_load_cursor_colors(int fg, int bg, struct fb_info *info)
821 struct i810fb_par *par = info->par;
822 u8 __iomem *mmio = par->mmio_start_virtual;
823 u8 red, green, blue, trans, temp;
825 i810fb_getcolreg(bg, &red, &green, &blue, &trans, info);
827 temp = i810_readb(PIXCONF1, mmio);
828 i810_writeb(PIXCONF1, mmio, temp | EXTENDED_PALETTE);
830 i810_write_dac(4, red, green, blue, mmio);
832 i810_writeb(PIXCONF1, mmio, temp);
834 i810fb_getcolreg(fg, &red, &green, &blue, &trans, info);
835 temp = i810_readb(PIXCONF1, mmio);
836 i810_writeb(PIXCONF1, mmio, temp | EXTENDED_PALETTE);
838 i810_write_dac(5, red, green, blue, mmio);
840 i810_writeb(PIXCONF1, mmio, temp);
844 * i810_init_cursor - initializes the cursor
845 * @par: pointer to i810fb_par structure
848 * Initializes the cursor registers
850 static void i810_init_cursor(struct i810fb_par *par)
852 u8 __iomem *mmio = par->mmio_start_virtual;
854 i810_enable_cursor(mmio, OFF);
855 i810_writel(CURBASE, mmio, par->cursor_heap.physical);
856 i810_writew(CURCNTR, mmio, COORD_ACTIVE | CURSOR_MODE_64_XOR);
859 /*********************************************************************
860 * Framebuffer hook helpers *
861 *********************************************************************/
863 * i810_round_off - Round off values to capability of hardware
864 * @var: pointer to fb_var_screeninfo structure
867 * @var contains user-defined information for the mode to be set.
868 * This will try modify those values to ones nearest the
869 * capability of the hardware
871 static void i810_round_off(struct fb_var_screeninfo *var)
873 u32 xres, yres, vxres, vyres;
876 * Presently supports only these configurations
881 vxres = var->xres_virtual;
882 vyres = var->yres_virtual;
884 var->bits_per_pixel += 7;
885 var->bits_per_pixel &= ~7;
887 if (var->bits_per_pixel < 8)
888 var->bits_per_pixel = 8;
889 if (var->bits_per_pixel > 32)
890 var->bits_per_pixel = 32;
892 round_off_xres(&xres);
897 xres = (xres + 7) & ~7;
902 round_off_yres(&xres, &yres);
911 if (var->bits_per_pixel == 32)
912 var->accel_flags = 0;
914 /* round of horizontal timings to nearest 8 pixels */
915 var->left_margin = (var->left_margin + 4) & ~7;
916 var->right_margin = (var->right_margin + 4) & ~7;
917 var->hsync_len = (var->hsync_len + 4) & ~7;
919 if (var->vmode & FB_VMODE_INTERLACED) {
920 if (!((yres + var->upper_margin + var->vsync_len +
921 var->lower_margin) & 1))
927 var->xres_virtual = vxres;
928 var->yres_virtual = vyres;
932 * set_color_bitfields - sets rgba fields
933 * @var: pointer to fb_var_screeninfo
936 * The length, offset and ordering for each color field
937 * (red, green, blue) will be set as specified
940 static void set_color_bitfields(struct fb_var_screeninfo *var)
942 switch (var->bits_per_pixel) {
946 var->green.offset = 0;
947 var->green.length = 8;
948 var->blue.offset = 0;
949 var->blue.length = 8;
950 var->transp.offset = 0;
951 var->transp.length = 0;
954 var->green.length = (var->green.length == 5) ? 5 : 6;
956 var->blue.length = 5;
957 var->transp.length = 6 - var->green.length;
958 var->blue.offset = 0;
959 var->green.offset = 5;
960 var->red.offset = 5 + var->green.length;
961 var->transp.offset = (5 + var->red.offset) & 15;
963 case 24: /* RGB 888 */
964 case 32: /* RGBA 8888 */
965 var->red.offset = 16;
967 var->green.offset = 8;
968 var->green.length = 8;
969 var->blue.offset = 0;
970 var->blue.length = 8;
971 var->transp.length = var->bits_per_pixel - 24;
972 var->transp.offset = (var->transp.length) ? 24 : 0;
975 var->red.msb_right = 0;
976 var->green.msb_right = 0;
977 var->blue.msb_right = 0;
978 var->transp.msb_right = 0;
982 * i810_check_params - check if contents in var are valid
983 * @var: pointer to fb_var_screeninfo
984 * @info: pointer to fb_info
987 * This will check if the framebuffer size is sufficient
988 * for the current mode and if the user's monitor has the
989 * required specifications to display the current mode.
991 static int i810_check_params(struct fb_var_screeninfo *var,
992 struct fb_info *info)
994 struct i810fb_par *par = info->par;
995 int line_length, vidmem, mode_valid = 0, retval = 0;
996 u32 vyres = var->yres_virtual, vxres = var->xres_virtual;
1001 line_length = get_line_length(par, vxres, var->bits_per_pixel);
1002 vidmem = line_length*vyres;
1004 if (vidmem > par->fb.size) {
1005 vyres = par->fb.size/line_length;
1006 if (vyres < var->yres) {
1007 vyres = info->var.yres;
1008 vxres = par->fb.size/vyres;
1009 vxres /= var->bits_per_pixel >> 3;
1010 line_length = get_line_length(par, vxres,
1011 var->bits_per_pixel);
1012 vidmem = line_length * info->var.yres;
1013 if (vxres < var->xres) {
1014 printk("i810fb: required video memory, "
1015 "%d bytes, for %dx%d-%d (virtual) "
1016 "is out of range\n",
1017 vidmem, vxres, vyres,
1018 var->bits_per_pixel);
1024 var->xres_virtual = vxres;
1025 var->yres_virtual = vyres;
1030 switch (var->bits_per_pixel) {
1032 info->monspecs.dclkmax = 234000000;
1035 info->monspecs.dclkmax = 229000000;
1039 info->monspecs.dclkmax = 204000000;
1043 info->monspecs.dclkmin = 15000000;
1045 if (!fb_validate_mode(var, info))
1048 #ifdef CONFIG_FB_I810_I2C
1049 if (!mode_valid && info->monspecs.gtf &&
1050 !fb_get_mode(FB_MAXTIMINGS, 0, var, info))
1053 if (!mode_valid && info->monspecs.modedb_len) {
1054 const struct fb_videomode *mode;
1056 mode = fb_find_best_mode(var, &info->modelist);
1058 fb_videomode_to_var(var, mode);
1063 if (!mode_valid && info->monspecs.modedb_len == 0) {
1064 if (fb_get_mode(FB_MAXTIMINGS, 0, var, info)) {
1065 int default_sync = (info->monspecs.hfmin-HFMIN)
1066 |(info->monspecs.hfmax-HFMAX)
1067 |(info->monspecs.vfmin-VFMIN)
1068 |(info->monspecs.vfmax-VFMAX);
1069 printk("i810fb: invalid video mode%s\n",
1070 default_sync ? "" : ". Specifying "
1071 "vsyncN/hsyncN parameters may help");
1080 * encode_fix - fill up fb_fix_screeninfo structure
1081 * @fix: pointer to fb_fix_screeninfo
1082 * @info: pointer to fb_info
1085 * This will set up parameters that are unmodifiable by the user.
1087 static int encode_fix(struct fb_fix_screeninfo *fix, struct fb_info *info)
1089 struct i810fb_par *par = info->par;
1091 memset(fix, 0, sizeof(struct fb_fix_screeninfo));
1093 strcpy(fix->id, "I810");
1094 mutex_lock(&info->mm_lock);
1095 fix->smem_start = par->fb.physical;
1096 fix->smem_len = par->fb.size;
1097 mutex_unlock(&info->mm_lock);
1098 fix->type = FB_TYPE_PACKED_PIXELS;
1103 switch (info->var.bits_per_pixel) {
1105 fix->visual = FB_VISUAL_PSEUDOCOLOR;
1110 if (info->var.nonstd)
1111 fix->visual = FB_VISUAL_DIRECTCOLOR;
1113 fix->visual = FB_VISUAL_TRUECOLOR;
1119 fix->line_length = par->pitch;
1120 fix->mmio_start = par->mmio_start_phys;
1121 fix->mmio_len = MMIO_SIZE;
1122 fix->accel = FB_ACCEL_I810;
1128 * decode_var - modify par according to contents of var
1129 * @var: pointer to fb_var_screeninfo
1130 * @par: pointer to i810fb_par
1133 * Based on the contents of @var, @par will be dynamically filled up.
1134 * @par contains all information necessary to modify the hardware.
1136 static void decode_var(const struct fb_var_screeninfo *var,
1137 struct i810fb_par *par)
1139 u32 xres, yres, vxres, vyres;
1143 vxres = var->xres_virtual;
1144 vyres = var->yres_virtual;
1146 switch (var->bits_per_pixel) {
1148 par->pixconf = PIXCONF8;
1151 par->blit_bpp = BPP8;
1154 if (var->green.length == 5)
1155 par->pixconf = PIXCONF15;
1157 par->pixconf = PIXCONF16;
1160 par->blit_bpp = BPP16;
1163 par->pixconf = PIXCONF24;
1166 par->blit_bpp = BPP24;
1169 par->pixconf = PIXCONF32;
1172 par->blit_bpp = 3 << 24;
1175 if (var->nonstd && var->bits_per_pixel != 8)
1176 par->pixconf |= 1 << 27;
1178 i810_calc_dclk(var->pixclock, &par->regs.M,
1179 &par->regs.N, &par->regs.P);
1180 i810fb_encode_registers(var, par, xres, yres);
1182 par->watermark = i810_get_watermark(var, par);
1183 par->pitch = get_line_length(par, vxres, var->bits_per_pixel);
1187 * i810fb_getcolreg - gets red, green and blue values of the hardware DAC
1192 * @transp: transparency (alpha)
1193 * @info: pointer to fb_info
1196 * Gets the red, green and blue values of the hardware DAC as pointed by @regno
1197 * and writes them to @red, @green and @blue respectively
1199 static int i810fb_getcolreg(u8 regno, u8 *red, u8 *green, u8 *blue,
1200 u8 *transp, struct fb_info *info)
1202 struct i810fb_par *par = info->par;
1203 u8 __iomem *mmio = par->mmio_start_virtual;
1206 if (info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
1207 if ((info->var.green.length == 5 && regno > 31) ||
1208 (info->var.green.length == 6 && regno > 63))
1212 temp = i810_readb(PIXCONF1, mmio);
1213 i810_writeb(PIXCONF1, mmio, temp & ~EXTENDED_PALETTE);
1215 if (info->fix.visual == FB_VISUAL_DIRECTCOLOR &&
1216 info->var.green.length == 5)
1217 i810_read_dac(regno * 8, red, green, blue, mmio);
1219 else if (info->fix.visual == FB_VISUAL_DIRECTCOLOR &&
1220 info->var.green.length == 6) {
1223 i810_read_dac(regno * 8, red, &tmp, blue, mmio);
1224 i810_read_dac(regno * 4, &tmp, green, &tmp, mmio);
1227 i810_read_dac(regno, red, green, blue, mmio);
1230 i810_writeb(PIXCONF1, mmio, temp);
1235 /******************************************************************
1236 * Framebuffer device-specific hooks *
1237 ******************************************************************/
1239 static int i810fb_open(struct fb_info *info, int user)
1241 struct i810fb_par *par = info->par;
1243 mutex_lock(&par->open_lock);
1244 if (par->use_count == 0) {
1245 memset(&par->state, 0, sizeof(struct vgastate));
1246 par->state.flags = VGA_SAVE_CMAP;
1247 par->state.vgabase = par->mmio_start_virtual;
1248 save_vga(&par->state);
1250 i810_save_vga_state(par);
1254 mutex_unlock(&par->open_lock);
1259 static int i810fb_release(struct fb_info *info, int user)
1261 struct i810fb_par *par = info->par;
1263 mutex_lock(&par->open_lock);
1264 if (par->use_count == 0) {
1265 mutex_unlock(&par->open_lock);
1269 if (par->use_count == 1) {
1270 i810_restore_vga_state(par);
1271 restore_vga(&par->state);
1275 mutex_unlock(&par->open_lock);
1281 static int i810fb_setcolreg(unsigned regno, unsigned red, unsigned green,
1282 unsigned blue, unsigned transp,
1283 struct fb_info *info)
1285 struct i810fb_par *par = info->par;
1286 u8 __iomem *mmio = par->mmio_start_virtual;
1290 if (regno > 255) return 1;
1292 if (info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
1293 if ((info->var.green.length == 5 && regno > 31) ||
1294 (info->var.green.length == 6 && regno > 63))
1298 if (info->var.grayscale)
1299 red = green = blue = (19595 * red + 38470 * green +
1302 temp = i810_readb(PIXCONF1, mmio);
1303 i810_writeb(PIXCONF1, mmio, temp & ~EXTENDED_PALETTE);
1305 if (info->fix.visual == FB_VISUAL_DIRECTCOLOR &&
1306 info->var.green.length == 5) {
1307 for (i = 0; i < 8; i++)
1308 i810_write_dac((u8) (regno * 8) + i, (u8) red,
1309 (u8) green, (u8) blue, mmio);
1310 } else if (info->fix.visual == FB_VISUAL_DIRECTCOLOR &&
1311 info->var.green.length == 6) {
1315 for (i = 0; i < 8; i++)
1316 i810_write_dac((u8) (regno * 8) + i,
1317 (u8) red, (u8) green,
1320 i810_read_dac((u8) (regno*4), &r, &g, &b, mmio);
1321 for (i = 0; i < 4; i++)
1322 i810_write_dac((u8) (regno*4) + i, r, (u8) green,
1324 } else if (info->fix.visual == FB_VISUAL_PSEUDOCOLOR) {
1325 i810_write_dac((u8) regno, (u8) red, (u8) green,
1329 i810_writeb(PIXCONF1, mmio, temp);
1332 switch (info->var.bits_per_pixel) {
1334 if (info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
1335 if (info->var.green.length == 5)
1336 ((u32 *)info->pseudo_palette)[regno] =
1337 (regno << 10) | (regno << 5) |
1340 ((u32 *)info->pseudo_palette)[regno] =
1341 (regno << 11) | (regno << 5) |
1344 if (info->var.green.length == 5) {
1346 ((u32 *)info->pseudo_palette)[regno] =
1347 ((red & 0xf800) >> 1) |
1348 ((green & 0xf800) >> 6) |
1349 ((blue & 0xf800) >> 11);
1352 ((u32 *)info->pseudo_palette)[regno] =
1354 ((green & 0xf800) >> 5) |
1355 ((blue & 0xf800) >> 11);
1359 case 24: /* RGB 888 */
1360 case 32: /* RGBA 8888 */
1361 if (info->fix.visual == FB_VISUAL_DIRECTCOLOR)
1362 ((u32 *)info->pseudo_palette)[regno] =
1363 (regno << 16) | (regno << 8) |
1366 ((u32 *)info->pseudo_palette)[regno] =
1367 ((red & 0xff00) << 8) |
1369 ((blue & 0xff00) >> 8);
1376 static int i810fb_pan_display(struct fb_var_screeninfo *var,
1377 struct fb_info *info)
1379 struct i810fb_par *par = info->par;
1382 total = var->xoffset * par->depth +
1383 var->yoffset * info->fix.line_length;
1384 i810fb_load_front(total, info);
1389 static int i810fb_blank (int blank_mode, struct fb_info *info)
1391 struct i810fb_par *par = info->par;
1392 u8 __iomem *mmio = par->mmio_start_virtual;
1393 int mode = 0, pwr, scr_off = 0;
1395 pwr = i810_readl(PWR_CLKC, mmio);
1397 switch (blank_mode) {
1398 case FB_BLANK_UNBLANK:
1403 case FB_BLANK_NORMAL:
1408 case FB_BLANK_VSYNC_SUSPEND:
1413 case FB_BLANK_HSYNC_SUSPEND:
1418 case FB_BLANK_POWERDOWN:
1427 i810_screen_off(mmio, scr_off);
1428 i810_writel(HVSYNC, mmio, mode);
1429 i810_writel(PWR_CLKC, mmio, pwr);
1434 static int i810fb_set_par(struct fb_info *info)
1436 struct i810fb_par *par = info->par;
1438 decode_var(&info->var, par);
1439 i810_load_regs(par);
1440 i810_init_cursor(par);
1441 encode_fix(&info->fix, info);
1443 if (info->var.accel_flags && !(par->dev_flags & LOCKUP)) {
1444 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
1445 FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
1446 FBINFO_HWACCEL_IMAGEBLIT;
1447 info->pixmap.scan_align = 2;
1449 info->pixmap.scan_align = 1;
1450 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1455 static int i810fb_check_var(struct fb_var_screeninfo *var,
1456 struct fb_info *info)
1461 var->vmode &= ~FB_VMODE_MASK;
1462 var->vmode |= FB_VMODE_NONINTERLACED;
1464 if (var->vmode & FB_VMODE_DOUBLE) {
1465 var->vmode &= ~FB_VMODE_MASK;
1466 var->vmode |= FB_VMODE_NONINTERLACED;
1469 i810_round_off(var);
1470 if ((err = i810_check_params(var, info)))
1473 i810fb_fill_var_timings(var);
1474 set_color_bitfields(var);
1478 static int i810fb_cursor(struct fb_info *info, struct fb_cursor *cursor)
1480 struct i810fb_par *par = info->par;
1481 u8 __iomem *mmio = par->mmio_start_virtual;
1483 if (par->dev_flags & LOCKUP)
1486 if (cursor->image.width > 64 || cursor->image.height > 64)
1489 if ((i810_readl(CURBASE, mmio) & 0xf) != par->cursor_heap.physical) {
1490 i810_init_cursor(par);
1491 cursor->set |= FB_CUR_SETALL;
1494 i810_enable_cursor(mmio, OFF);
1496 if (cursor->set & FB_CUR_SETPOS) {
1499 tmp = (cursor->image.dx - info->var.xoffset) & 0xffff;
1500 tmp |= (cursor->image.dy - info->var.yoffset) << 16;
1501 i810_writel(CURPOS, mmio, tmp);
1504 if (cursor->set & FB_CUR_SETSIZE)
1505 i810_reset_cursor_image(par);
1507 if (cursor->set & FB_CUR_SETCMAP)
1508 i810_load_cursor_colors(cursor->image.fg_color,
1509 cursor->image.bg_color,
1512 if (cursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
1513 int size = ((cursor->image.width + 7) >> 3) *
1514 cursor->image.height;
1516 u8 *data = kmalloc(64 * 8, GFP_ATOMIC);
1521 switch (cursor->rop) {
1523 for (i = 0; i < size; i++)
1524 data[i] = cursor->image.data[i] ^ cursor->mask[i];
1528 for (i = 0; i < size; i++)
1529 data[i] = cursor->image.data[i] & cursor->mask[i];
1533 i810_load_cursor_image(cursor->image.width,
1534 cursor->image.height, data,
1540 i810_enable_cursor(mmio, ON);
1545 static struct fb_ops i810fb_ops = {
1546 .owner = THIS_MODULE,
1547 .fb_open = i810fb_open,
1548 .fb_release = i810fb_release,
1549 .fb_check_var = i810fb_check_var,
1550 .fb_set_par = i810fb_set_par,
1551 .fb_setcolreg = i810fb_setcolreg,
1552 .fb_blank = i810fb_blank,
1553 .fb_pan_display = i810fb_pan_display,
1554 .fb_fillrect = i810fb_fillrect,
1555 .fb_copyarea = i810fb_copyarea,
1556 .fb_imageblit = i810fb_imageblit,
1557 .fb_cursor = i810fb_cursor,
1558 .fb_sync = i810fb_sync,
1561 /***********************************************************************
1562 * Power Management *
1563 ***********************************************************************/
1564 static int i810fb_suspend(struct pci_dev *dev, pm_message_t mesg)
1566 struct fb_info *info = pci_get_drvdata(dev);
1567 struct i810fb_par *par = info->par;
1569 par->cur_state = mesg.event;
1571 switch (mesg.event) {
1572 case PM_EVENT_FREEZE:
1573 case PM_EVENT_PRETHAW:
1574 dev->dev.power.power_state = mesg;
1579 fb_set_suspend(info, 1);
1581 if (info->fbops->fb_sync)
1582 info->fbops->fb_sync(info);
1584 i810fb_blank(FB_BLANK_POWERDOWN, info);
1585 agp_unbind_memory(par->i810_gtt.i810_fb_memory);
1586 agp_unbind_memory(par->i810_gtt.i810_cursor_memory);
1588 pci_save_state(dev);
1589 pci_disable_device(dev);
1590 pci_set_power_state(dev, pci_choose_state(dev, mesg));
1596 static int i810fb_resume(struct pci_dev *dev)
1598 struct fb_info *info = pci_get_drvdata(dev);
1599 struct i810fb_par *par = info->par;
1600 int cur_state = par->cur_state;
1602 par->cur_state = PM_EVENT_ON;
1604 if (cur_state == PM_EVENT_FREEZE) {
1605 pci_set_power_state(dev, PCI_D0);
1610 pci_set_power_state(dev, PCI_D0);
1611 pci_restore_state(dev);
1613 if (pci_enable_device(dev))
1616 pci_set_master(dev);
1617 agp_bind_memory(par->i810_gtt.i810_fb_memory,
1619 agp_bind_memory(par->i810_gtt.i810_cursor_memory,
1620 par->cursor_heap.offset);
1621 i810fb_set_par(info);
1622 fb_set_suspend (info, 0);
1623 info->fbops->fb_blank(VESA_NO_BLANKING, info);
1628 /***********************************************************************
1629 * AGP resource allocation *
1630 ***********************************************************************/
1632 static void i810_fix_pointers(struct i810fb_par *par)
1634 par->fb.physical = par->aperture.physical+(par->fb.offset << 12);
1635 par->fb.virtual = par->aperture.virtual+(par->fb.offset << 12);
1636 par->iring.physical = par->aperture.physical +
1637 (par->iring.offset << 12);
1638 par->iring.virtual = par->aperture.virtual +
1639 (par->iring.offset << 12);
1640 par->cursor_heap.virtual = par->aperture.virtual+
1641 (par->cursor_heap.offset << 12);
1644 static void i810_fix_offsets(struct i810fb_par *par)
1646 if (vram + 1 > par->aperture.size >> 20)
1647 vram = (par->aperture.size >> 20) - 1;
1648 if (v_offset_default > (par->aperture.size >> 20))
1649 v_offset_default = (par->aperture.size >> 20);
1650 if (vram + v_offset_default + 1 > par->aperture.size >> 20)
1651 v_offset_default = (par->aperture.size >> 20) - (vram + 1);
1653 par->fb.size = vram << 20;
1654 par->fb.offset = v_offset_default << 20;
1655 par->fb.offset >>= 12;
1657 par->iring.offset = par->fb.offset + (par->fb.size >> 12);
1658 par->iring.size = RINGBUFFER_SIZE;
1660 par->cursor_heap.offset = par->iring.offset + (RINGBUFFER_SIZE >> 12);
1661 par->cursor_heap.size = 4096;
1664 static int i810_alloc_agp_mem(struct fb_info *info)
1666 struct i810fb_par *par = info->par;
1668 struct agp_bridge_data *bridge;
1670 i810_fix_offsets(par);
1671 size = par->fb.size + par->iring.size;
1673 if (!(bridge = agp_backend_acquire(par->dev))) {
1674 printk("i810fb_alloc_fbmem: cannot acquire agpgart\n");
1677 if (!(par->i810_gtt.i810_fb_memory =
1678 agp_allocate_memory(bridge, size >> 12, AGP_NORMAL_MEMORY))) {
1679 printk("i810fb_alloc_fbmem: can't allocate framebuffer "
1681 agp_backend_release(bridge);
1684 if (agp_bind_memory(par->i810_gtt.i810_fb_memory,
1686 printk("i810fb_alloc_fbmem: can't bind framebuffer memory\n");
1687 agp_backend_release(bridge);
1691 if (!(par->i810_gtt.i810_cursor_memory =
1692 agp_allocate_memory(bridge, par->cursor_heap.size >> 12,
1693 AGP_PHYSICAL_MEMORY))) {
1694 printk("i810fb_alloc_cursormem: can't allocate"
1696 agp_backend_release(bridge);
1699 if (agp_bind_memory(par->i810_gtt.i810_cursor_memory,
1700 par->cursor_heap.offset)) {
1701 printk("i810fb_alloc_cursormem: cannot bind cursor memory\n");
1702 agp_backend_release(bridge);
1706 par->cursor_heap.physical = par->i810_gtt.i810_cursor_memory->physical;
1708 i810_fix_pointers(par);
1710 agp_backend_release(bridge);
1715 /***************************************************************
1717 ***************************************************************/
1720 * i810_init_monspecs
1721 * @info: pointer to device specific info structure
1724 * Sets the user monitor's horizontal and vertical
1727 static void i810_init_monspecs(struct fb_info *info)
1733 if (!info->monspecs.hfmax)
1734 info->monspecs.hfmax = hsync2;
1735 if (!info->monspecs.hfmin)
1736 info->monspecs.hfmin = hsync1;
1737 if (hsync2 < hsync1)
1738 info->monspecs.hfmin = hsync2;
1744 if (IS_DVT && vsync1 < 60)
1746 if (!info->monspecs.vfmax)
1747 info->monspecs.vfmax = vsync2;
1748 if (!info->monspecs.vfmin)
1749 info->monspecs.vfmin = vsync1;
1750 if (vsync2 < vsync1)
1751 info->monspecs.vfmin = vsync2;
1755 * i810_init_defaults - initializes default values to use
1756 * @par: pointer to i810fb_par structure
1757 * @info: pointer to current fb_info structure
1759 static void i810_init_defaults(struct i810fb_par *par, struct fb_info *info)
1761 mutex_init(&par->open_lock);
1764 v_offset_default = voffset;
1765 else if (par->aperture.size > 32 * 1024 * 1024)
1766 v_offset_default = 16;
1768 v_offset_default = 8;
1774 par->dev_flags |= HAS_ACCELERATION;
1777 par->dev_flags |= ALWAYS_SYNC;
1779 par->ddc_num = (ddc3 ? 3 : 2);
1784 par->i810fb_ops = i810fb_ops;
1787 info->var.xres = xres;
1789 info->var.xres = 640;
1792 info->var.yres = yres;
1794 info->var.yres = 480;
1797 vyres = (vram << 20)/(info->var.xres*bpp >> 3);
1799 info->var.yres_virtual = vyres;
1800 info->var.bits_per_pixel = bpp;
1803 info->var.nonstd = 1;
1805 if (par->dev_flags & HAS_ACCELERATION)
1806 info->var.accel_flags = 1;
1808 i810_init_monspecs(info);
1812 * i810_init_device - initialize device
1813 * @par: pointer to i810fb_par structure
1815 static void i810_init_device(struct i810fb_par *par)
1818 u8 __iomem *mmio = par->mmio_start_virtual;
1821 par->wc_cookie= arch_phys_wc_add((u32) par->aperture.physical,
1822 par->aperture.size);
1824 i810_init_cursor(par);
1826 /* mvo: enable external vga-connector (for laptops) */
1828 i810_writel(HVSYNC, mmio, 0);
1829 i810_writel(PWR_CLKC, mmio, 3);
1832 pci_read_config_byte(par->dev, 0x50, ®);
1834 par->mem_freq = (reg) ? 133 : 100;
1838 static int i810_allocate_pci_resource(struct i810fb_par *par,
1839 const struct pci_device_id *entry)
1843 if ((err = pci_enable_device(par->dev))) {
1844 printk("i810fb_init: cannot enable device\n");
1847 par->res_flags |= PCI_DEVICE_ENABLED;
1849 if (pci_resource_len(par->dev, 0) > 512 * 1024) {
1850 par->aperture.physical = pci_resource_start(par->dev, 0);
1851 par->aperture.size = pci_resource_len(par->dev, 0);
1852 par->mmio_start_phys = pci_resource_start(par->dev, 1);
1854 par->aperture.physical = pci_resource_start(par->dev, 1);
1855 par->aperture.size = pci_resource_len(par->dev, 1);
1856 par->mmio_start_phys = pci_resource_start(par->dev, 0);
1858 if (!par->aperture.size) {
1859 printk("i810fb_init: device is disabled\n");
1863 if (!request_mem_region(par->aperture.physical,
1865 i810_pci_list[entry->driver_data])) {
1866 printk("i810fb_init: cannot request framebuffer region\n");
1869 par->res_flags |= FRAMEBUFFER_REQ;
1871 par->aperture.virtual = ioremap_wc(par->aperture.physical,
1872 par->aperture.size);
1873 if (!par->aperture.virtual) {
1874 printk("i810fb_init: cannot remap framebuffer region\n");
1878 if (!request_mem_region(par->mmio_start_phys,
1880 i810_pci_list[entry->driver_data])) {
1881 printk("i810fb_init: cannot request mmio region\n");
1884 par->res_flags |= MMIO_REQ;
1886 par->mmio_start_virtual = ioremap_nocache(par->mmio_start_phys,
1888 if (!par->mmio_start_virtual) {
1889 printk("i810fb_init: cannot remap mmio region\n");
1896 static void i810fb_find_init_mode(struct fb_info *info)
1898 struct fb_videomode mode;
1899 struct fb_var_screeninfo var;
1900 struct fb_monspecs *specs = &info->monspecs;
1902 #ifdef CONFIG_FB_I810_I2C
1905 struct i810fb_par *par = info->par;
1908 INIT_LIST_HEAD(&info->modelist);
1909 memset(&mode, 0, sizeof(struct fb_videomode));
1911 #ifdef CONFIG_FB_I810_I2C
1912 i810_create_i2c_busses(par);
1914 for (i = 0; i < par->ddc_num + 1; i++) {
1915 err = i810_probe_i2c_connector(info, &par->edid, i);
1921 printk("i810fb_init_pci: DDC probe successful\n");
1923 fb_edid_to_monspecs(par->edid, specs);
1925 if (specs->modedb == NULL)
1926 printk("i810fb_init_pci: Unable to get Mode Database\n");
1928 fb_videomode_to_modelist(specs->modedb, specs->modedb_len,
1930 if (specs->modedb != NULL) {
1931 const struct fb_videomode *m;
1934 if ((m = fb_find_best_mode(&var, &info->modelist))) {
1941 m = fb_find_best_display(&info->monspecs, &info->modelist);
1946 fb_videomode_to_var(&var, &mode);
1950 fb_find_mode(&var, info, mode_option, specs->modedb,
1951 specs->modedb_len, (found) ? &mode : NULL,
1952 info->var.bits_per_pixel);
1955 fb_destroy_modedb(specs->modedb);
1956 specs->modedb = NULL;
1960 static int i810fb_setup(char *options)
1962 char *this_opt, *suffix = NULL;
1964 if (!options || !*options)
1967 while ((this_opt = strsep(&options, ",")) != NULL) {
1968 if (!strncmp(this_opt, "mtrr", 4))
1970 else if (!strncmp(this_opt, "accel", 5))
1972 else if (!strncmp(this_opt, "extvga", 6))
1974 else if (!strncmp(this_opt, "sync", 4))
1976 else if (!strncmp(this_opt, "vram:", 5))
1977 vram = (simple_strtoul(this_opt+5, NULL, 0));
1978 else if (!strncmp(this_opt, "voffset:", 8))
1979 voffset = (simple_strtoul(this_opt+8, NULL, 0));
1980 else if (!strncmp(this_opt, "xres:", 5))
1981 xres = simple_strtoul(this_opt+5, NULL, 0);
1982 else if (!strncmp(this_opt, "yres:", 5))
1983 yres = simple_strtoul(this_opt+5, NULL, 0);
1984 else if (!strncmp(this_opt, "vyres:", 6))
1985 vyres = simple_strtoul(this_opt+6, NULL, 0);
1986 else if (!strncmp(this_opt, "bpp:", 4))
1987 bpp = simple_strtoul(this_opt+4, NULL, 0);
1988 else if (!strncmp(this_opt, "hsync1:", 7)) {
1989 hsync1 = simple_strtoul(this_opt+7, &suffix, 0);
1990 if (strncmp(suffix, "H", 1))
1992 } else if (!strncmp(this_opt, "hsync2:", 7)) {
1993 hsync2 = simple_strtoul(this_opt+7, &suffix, 0);
1994 if (strncmp(suffix, "H", 1))
1996 } else if (!strncmp(this_opt, "vsync1:", 7))
1997 vsync1 = simple_strtoul(this_opt+7, NULL, 0);
1998 else if (!strncmp(this_opt, "vsync2:", 7))
1999 vsync2 = simple_strtoul(this_opt+7, NULL, 0);
2000 else if (!strncmp(this_opt, "dcolor", 6))
2002 else if (!strncmp(this_opt, "ddc3", 4))
2005 mode_option = this_opt;
2011 static int i810fb_init_pci(struct pci_dev *dev,
2012 const struct pci_device_id *entry)
2014 struct fb_info *info;
2015 struct i810fb_par *par = NULL;
2016 struct fb_videomode mode;
2017 int err = -1, vfreq, hfreq, pixclock;
2019 info = framebuffer_alloc(sizeof(struct i810fb_par), &dev->dev);
2026 if (!(info->pixmap.addr = kzalloc(8*1024, GFP_KERNEL))) {
2027 i810fb_release_resource(info, par);
2030 info->pixmap.size = 8*1024;
2031 info->pixmap.buf_align = 8;
2032 info->pixmap.access_align = 32;
2033 info->pixmap.flags = FB_PIXMAP_SYSTEM;
2035 if ((err = i810_allocate_pci_resource(par, entry))) {
2036 i810fb_release_resource(info, par);
2040 i810_init_defaults(par, info);
2042 if ((err = i810_alloc_agp_mem(info))) {
2043 i810fb_release_resource(info, par);
2047 i810_init_device(par);
2049 info->screen_base = par->fb.virtual;
2050 info->fbops = &par->i810fb_ops;
2051 info->pseudo_palette = par->pseudo_palette;
2052 fb_alloc_cmap(&info->cmap, 256, 0);
2053 i810fb_find_init_mode(info);
2055 if ((err = info->fbops->fb_check_var(&info->var, info))) {
2056 i810fb_release_resource(info, par);
2060 fb_var_to_videomode(&mode, &info->var);
2061 fb_add_videomode(&mode, &info->modelist);
2063 i810fb_init_ringbuffer(info);
2064 err = register_framebuffer(info);
2067 i810fb_release_resource(info, par);
2068 printk("i810fb_init: cannot register framebuffer device\n");
2072 pci_set_drvdata(dev, info);
2073 pixclock = 1000000000/(info->var.pixclock);
2075 hfreq = pixclock/(info->var.xres + info->var.left_margin +
2076 info->var.hsync_len + info->var.right_margin);
2077 vfreq = hfreq/(info->var.yres + info->var.upper_margin +
2078 info->var.vsync_len + info->var.lower_margin);
2080 printk("I810FB: fb%d : %s v%d.%d.%d%s\n"
2081 "I810FB: Video RAM : %dK\n"
2082 "I810FB: Monitor : H: %d-%d KHz V: %d-%d Hz\n"
2083 "I810FB: Mode : %dx%d-%dbpp@%dHz\n",
2085 i810_pci_list[entry->driver_data],
2086 VERSION_MAJOR, VERSION_MINOR, VERSION_TEENIE, BRANCH_VERSION,
2087 (int) par->fb.size>>10, info->monspecs.hfmin/1000,
2088 info->monspecs.hfmax/1000, info->monspecs.vfmin,
2089 info->monspecs.vfmax, info->var.xres,
2090 info->var.yres, info->var.bits_per_pixel, vfreq);
2094 /***************************************************************
2095 * De-initialization *
2096 ***************************************************************/
2098 static void i810fb_release_resource(struct fb_info *info,
2099 struct i810fb_par *par)
2101 struct gtt_data *gtt = &par->i810_gtt;
2102 arch_phys_wc_del(par->wc_cookie);
2104 i810_delete_i2c_busses(par);
2106 if (par->i810_gtt.i810_cursor_memory)
2107 agp_free_memory(gtt->i810_cursor_memory);
2108 if (par->i810_gtt.i810_fb_memory)
2109 agp_free_memory(gtt->i810_fb_memory);
2111 if (par->mmio_start_virtual)
2112 iounmap(par->mmio_start_virtual);
2113 if (par->aperture.virtual)
2114 iounmap(par->aperture.virtual);
2116 if (par->res_flags & FRAMEBUFFER_REQ)
2117 release_mem_region(par->aperture.physical,
2118 par->aperture.size);
2119 if (par->res_flags & MMIO_REQ)
2120 release_mem_region(par->mmio_start_phys, MMIO_SIZE);
2122 framebuffer_release(info);
2126 static void __exit i810fb_remove_pci(struct pci_dev *dev)
2128 struct fb_info *info = pci_get_drvdata(dev);
2129 struct i810fb_par *par = info->par;
2131 unregister_framebuffer(info);
2132 i810fb_release_resource(info, par);
2133 printk("cleanup_module: unloaded i810 framebuffer device\n");
2137 static int i810fb_init(void)
2139 char *option = NULL;
2141 if (fb_get_options("i810fb", &option))
2143 i810fb_setup(option);
2145 return pci_register_driver(&i810fb_driver);
2149 /*********************************************************************
2151 *********************************************************************/
2155 static int i810fb_init(void)
2160 return pci_register_driver(&i810fb_driver);
2163 module_param(vram, int, 0);
2164 MODULE_PARM_DESC(vram, "System RAM to allocate to framebuffer in MiB"
2166 module_param(voffset, int, 0);
2167 MODULE_PARM_DESC(voffset, "at what offset to place start of framebuffer "
2168 "memory (0 to maximum aperture size), in MiB (default = 48)");
2169 module_param(bpp, int, 0);
2170 MODULE_PARM_DESC(bpp, "Color depth for display in bits per pixel"
2172 module_param(xres, int, 0);
2173 MODULE_PARM_DESC(xres, "Horizontal resolution in pixels (default = 640)");
2174 module_param(yres, int, 0);
2175 MODULE_PARM_DESC(yres, "Vertical resolution in scanlines (default = 480)");
2176 module_param(vyres,int, 0);
2177 MODULE_PARM_DESC(vyres, "Virtual vertical resolution in scanlines"
2178 " (default = 480)");
2179 module_param(hsync1, int, 0);
2180 MODULE_PARM_DESC(hsync1, "Minimum horizontal frequency of monitor in KHz"
2182 module_param(hsync2, int, 0);
2183 MODULE_PARM_DESC(hsync2, "Maximum horizontal frequency of monitor in KHz"
2185 module_param(vsync1, int, 0);
2186 MODULE_PARM_DESC(vsync1, "Minimum vertical frequency of monitor in Hz"
2188 module_param(vsync2, int, 0);
2189 MODULE_PARM_DESC(vsync2, "Maximum vertical frequency of monitor in Hz"
2191 module_param(accel, bool, 0);
2192 MODULE_PARM_DESC(accel, "Use Acceleration (BLIT) engine (default = 0)");
2193 module_param(mtrr, bool, 0);
2194 MODULE_PARM_DESC(mtrr, "Use MTRR (default = 0)");
2195 module_param(extvga, bool, 0);
2196 MODULE_PARM_DESC(extvga, "Enable external VGA connector (default = 0)");
2197 module_param(sync, bool, 0);
2198 MODULE_PARM_DESC(sync, "wait for accel engine to finish drawing"
2200 module_param(dcolor, bool, 0);
2201 MODULE_PARM_DESC(dcolor, "use DirectColor visuals"
2202 " (default = 0 = TrueColor)");
2203 module_param(ddc3, bool, 0);
2204 MODULE_PARM_DESC(ddc3, "Probe DDC bus 3 (default = 0 = no)");
2205 module_param(mode_option, charp, 0);
2206 MODULE_PARM_DESC(mode_option, "Specify initial video mode");
2208 MODULE_AUTHOR("Tony A. Daplas");
2209 MODULE_DESCRIPTION("Framebuffer device for the Intel 810/815 and"
2210 " compatible cards");
2211 MODULE_LICENSE("GPL");
2213 static void __exit i810fb_exit(void)
2215 pci_unregister_driver(&i810fb_driver);
2217 module_exit(i810fb_exit);
2221 module_init(i810fb_init);