matroxfb_dac1064.c

Linux内核源代码 为压缩文件 是<<Linux内核>>一书中的源代码

	outDAC1064(PMINFO M1064_XPIXCLKCTRL, inDAC1064(PMINFO M1064_XPIXCLKCTRL) | M1064_XPIXCLKCTRL_DIS |
		   M1064_XPIXCLKCTRL_PLL_UP);
	switch (flags & 3) {
		case 0:		reg = M1064_XPIXPLLAM; break;
		case 1:		reg = M1064_XPIXPLLBM; break;
		default:	reg = M1064_XPIXPLLCM; break;
	}
	outDAC1064(PMINFO reg++, m);
	outDAC1064(PMINFO reg++, n);
	outDAC1064(PMINFO reg, p);
	selClk = mga_inb(M_MISC_REG_READ) & ~0xC;
	/* there should be flags & 0x03 & case 0/1/else */
	/* and we should first select source and after that we should wait for PLL */
	/* and we are waiting for PLL with oscilator disabled... Is it right? */
	switch (flags & 0x03) {
		case 0x00:	break;
		case 0x01:	selClk |= 4; break;
		default:	selClk |= 0x0C; break;
	}
	mga_outb(M_MISC_REG, selClk);
	for (clk = 500000; clk; clk--) {
		if (inDAC1064(PMINFO M1064_XPIXPLLSTAT) & 0x40)
			break;
		udelay(10);
	};
	if (!clk)
		printk(KERN_ERR "matroxfb: Pixel PLL%c not locked after usual time\n", (reg-M1064_XPIXPLLAM-2)/4 + 'A');
	selClk = inDAC1064(PMINFO M1064_XPIXCLKCTRL) & ~M1064_XPIXCLKCTRL_SRC_MASK;
	switch (flags & 0x0C) {
		case 0x00:	selClk |= M1064_XPIXCLKCTRL_SRC_PCI; break;
		case 0x04:	selClk |= M1064_XPIXCLKCTRL_SRC_PLL; break;
		default:	selClk |= M1064_XPIXCLKCTRL_SRC_EXT; break;
	}
	outDAC1064(PMINFO M1064_XPIXCLKCTRL, selClk);
	outDAC1064(PMINFO M1064_XPIXCLKCTRL, inDAC1064(PMINFO M1064_XPIXCLKCTRL) & ~M1064_XPIXCLKCTRL_DIS);
}

static void MGAG100_setPixClock(CPMINFO int flags, int freq){
	unsigned int m, n, p;

	DBG("MGAG100_setPixClock")

	DAC1064_calcclock(PMINFO freq, ACCESS_FBINFO(max_pixel_clock), &m, &n, &p);
	MGAG100_progPixClock(PMINFO flags, m, n, p);
}
#endif

#ifdef CONFIG_FB_MATROX_MYSTIQUE
static int MGA1064_preinit(WPMINFO struct matrox_hw_state* hw){
	static const int vxres_mystique[] = { 512,        640, 768,  800,  832,  960,
					     1024, 1152, 1280,      1600, 1664, 1920,
					     2048,    0};
	DBG("MGA1064_preinit")

	/* ACCESS_FBINFO(capable.cfb4) = 0; ... preinitialized by 0 */
	ACCESS_FBINFO(capable.text) = 1;
	ACCESS_FBINFO(capable.vxres) = vxres_mystique;
	ACCESS_FBINFO(features.accel.has_cacheflush) = 1;
	ACCESS_FBINFO(cursor.timer.function) = matroxfb_DAC1064_flashcursor;

	ACCESS_FBINFO(primout) = &m1064;

	if (ACCESS_FBINFO(devflags.noinit))
		return 0;	/* do not modify settings */
	hw->MXoptionReg &= 0xC0000100;
	hw->MXoptionReg |= 0x00094E20;
	if (ACCESS_FBINFO(devflags.novga))
		hw->MXoptionReg &= ~0x00000100;
	if (ACCESS_FBINFO(devflags.nobios))
		hw->MXoptionReg &= ~0x40000000;
	if (ACCESS_FBINFO(devflags.nopciretry))
		hw->MXoptionReg |=  0x20000000;
	pci_write_config_dword(ACCESS_FBINFO(pcidev), PCI_OPTION_REG, hw->MXoptionReg);
	mga_setr(M_SEQ_INDEX, 0x01, 0x20);
	mga_outl(M_CTLWTST, 0x00000000);
	udelay(200);
	mga_outl(M_MACCESS, 0x00008000);
	udelay(100);
	mga_outl(M_MACCESS, 0x0000C000);
	return 0;
}

static void MGA1064_reset(WPMINFO struct matrox_hw_state* hw){

	DBG("MGA1064_reset");

	ACCESS_FBINFO(features.DAC1064.cursorimage) = ACCESS_FBINFO(video.len_usable) - 1024;
	if (ACCESS_FBINFO(devflags.hwcursor))
		ACCESS_FBINFO(video.len_usable) -= 1024;
	matroxfb_fastfont_init(MINFO);
	MGA1064_ramdac_init(PMINFO hw);
}
#endif

#ifdef CONFIG_FB_MATROX_G100
static int MGAG100_preinit(WPMINFO struct matrox_hw_state* hw){
	static const int vxres_g100[] = {  512,        640, 768,  800,  832,  960,
                                          1024, 1152, 1280,      1600, 1664, 1920,
                                          2048, 0};
        u_int32_t reg50;
#if 0
	u_int32_t q;
#endif

	DBG("MGAG100_preinit")

	/* there are some instabilities if in_div > 19 && vco < 61000 */
	if (ACCESS_FBINFO(devflags.g450dac)) {
		ACCESS_FBINFO(features.pll.vco_freq_min) = 130000;	/* my sample: >118 */
	} else {
		ACCESS_FBINFO(features.pll.vco_freq_min) = 62000;
	}
	ACCESS_FBINFO(features.pll.ref_freq)	 = 27000;
	ACCESS_FBINFO(features.pll.feed_div_min) = 7;
	ACCESS_FBINFO(features.pll.feed_div_max) = 127;
	ACCESS_FBINFO(features.pll.in_div_min)	 = 1;
	ACCESS_FBINFO(features.pll.in_div_max)	 = 31;
	ACCESS_FBINFO(features.pll.post_shift_max) = 3;
	ACCESS_FBINFO(features.DAC1064.xvrefctrl) = DAC1064_XVREFCTRL_G100_DEFAULT;
	/* ACCESS_FBINFO(capable.cfb4) = 0; ... preinitialized by 0 */
	ACCESS_FBINFO(capable.text) = 1;
	ACCESS_FBINFO(capable.vxres) = vxres_g100;
	ACCESS_FBINFO(features.accel.has_cacheflush) = 1;
	ACCESS_FBINFO(cursor.timer.function) = matroxfb_DAC1064_flashcursor;
	ACCESS_FBINFO(capable.plnwt) = ACCESS_FBINFO(devflags.accelerator) != FB_ACCEL_MATROX_MGAG100;

	ACCESS_FBINFO(primout) = &m1064;

	if (ACCESS_FBINFO(devflags.noinit))
		return 0;
	hw->MXoptionReg &= 0xC0000100;
	hw->MXoptionReg |= 0x00000020;
	if (ACCESS_FBINFO(devflags.novga))
		hw->MXoptionReg &= ~0x00000100;
	if (ACCESS_FBINFO(devflags.nobios))
		hw->MXoptionReg &= ~0x40000000;
	if (ACCESS_FBINFO(devflags.nopciretry))
		hw->MXoptionReg |=  0x20000000;
	pci_write_config_dword(ACCESS_FBINFO(pcidev), PCI_OPTION_REG, hw->MXoptionReg);
	DAC1064_setmclk(PMINFO hw, DAC1064_OPT_MDIV2 | DAC1064_OPT_GDIV3 | DAC1064_OPT_SCLK_PCI, 133333);

	if (ACCESS_FBINFO(devflags.accelerator) == FB_ACCEL_MATROX_MGAG100) {
		pci_read_config_dword(ACCESS_FBINFO(pcidev), 0x50, &reg50);
		reg50 &= ~0x3000;
		pci_write_config_dword(ACCESS_FBINFO(pcidev), 0x50, reg50);

		hw->MXoptionReg |= 0x1080;
		pci_write_config_dword(ACCESS_FBINFO(pcidev), PCI_OPTION_REG, hw->MXoptionReg);
		mga_outl(M_CTLWTST, 0x00000300);
		/* mga_outl(M_CTLWTST, 0x03258A31); */
		udelay(100);
		mga_outb(0x1C05, 0x00);
		mga_outb(0x1C05, 0x80);
		udelay(100);
		mga_outb(0x1C05, 0x40);
		mga_outb(0x1C05, 0xC0);
		udelay(100);
		reg50 &= ~0xFF;
		reg50 |=  0x07;
		pci_write_config_dword(ACCESS_FBINFO(pcidev), 0x50, reg50);
		/* it should help with G100 */
		mga_outb(M_GRAPHICS_INDEX, 6);
		mga_outb(M_GRAPHICS_DATA, (mga_inb(M_GRAPHICS_DATA) & 3) | 4);
		mga_setr(M_EXTVGA_INDEX, 0x03, 0x81);
		mga_setr(M_EXTVGA_INDEX, 0x04, 0x00);
		mga_writeb(ACCESS_FBINFO(video.vbase), 0x0000, 0xAA);
		mga_writeb(ACCESS_FBINFO(video.vbase), 0x0800, 0x55);
		mga_writeb(ACCESS_FBINFO(video.vbase), 0x4000, 0x55);
#if 0
		if (mga_readb(ACCESS_FBINFO(video.vbase), 0x0000) != 0xAA) {
			hw->MXoptionReg &= ~0x1000;
		}
#endif
		hw->MXoptionReg |= 0x00078020;
	} else 	if (ACCESS_FBINFO(devflags.accelerator) == FB_ACCEL_MATROX_MGAG200) {
		pci_read_config_dword(ACCESS_FBINFO(pcidev), 0x50, &reg50);
		reg50 &= ~0x3000;
		pci_write_config_dword(ACCESS_FBINFO(pcidev), 0x50, reg50);

		if (ACCESS_FBINFO(devflags.memtype) == -1)
			ACCESS_FBINFO(devflags.memtype) = 3;
		hw->MXoptionReg |= (ACCESS_FBINFO(devflags.memtype) & 7) << 10;
		if (ACCESS_FBINFO(devflags.sgram))
			hw->MXoptionReg |= 0x4000;
		mga_outl(M_CTLWTST, 0x042450A1);
		mga_outl(M_MEMRDBK, 0x00000108);
		udelay(200);
		mga_outl(M_MACCESS, 0x00000000);
		mga_outl(M_MACCESS, 0x00008000);
		udelay(100);
		mga_outw(M_MEMRDBK, 0x00000108);
		hw->MXoptionReg |= 0x00078020;
	} else {
		pci_read_config_dword(ACCESS_FBINFO(pcidev), 0x50, &reg50);
		reg50 &= ~0x00000100;
		reg50 |=  0x00000000;
		pci_write_config_dword(ACCESS_FBINFO(pcidev), 0x50, reg50);

		if (ACCESS_FBINFO(devflags.memtype) == -1)
			ACCESS_FBINFO(devflags.memtype) = 0;
		hw->MXoptionReg |= (ACCESS_FBINFO(devflags.memtype) & 7) << 10;
		if (ACCESS_FBINFO(devflags.sgram))
			hw->MXoptionReg |= 0x4000;
		mga_outl(M_CTLWTST, 0x042450A1);
		mga_outl(M_MEMRDBK, 0x00000108);
		udelay(200);
		mga_outl(M_MACCESS, 0x00000000);
		mga_outl(M_MACCESS, 0x00008000);
		udelay(100);
		mga_outl(M_MEMRDBK, 0x00000108);
		hw->MXoptionReg |= 0x00040020;
	}
	pci_write_config_dword(ACCESS_FBINFO(pcidev), PCI_OPTION_REG, hw->MXoptionReg);
	return 0;
}

static void MGAG100_reset(WPMINFO struct matrox_hw_state* hw){
	u_int8_t b;

	DBG("MGAG100_reset")

	ACCESS_FBINFO(features.DAC1064.cursorimage) = ACCESS_FBINFO(video.len_usable) - 1024;
	if (ACCESS_FBINFO(devflags.hwcursor))
		ACCESS_FBINFO(video.len_usable) -= 1024;
	matroxfb_fastfont_init(MINFO);

	{
#ifdef G100_BROKEN_IBM_82351
		u_int32_t d;

		find 1014/22 (IBM/82351); /* if found and bridging Matrox, do some strange stuff */
		pci_read_config_byte(ibm, PCI_SECONDARY_BUS, &b);
		if (b == ACCESS_FBINFO(pcidev)->bus->number) {
			pci_write_config_byte(ibm, PCI_COMMAND+1, 0);	/* disable back-to-back & SERR */
			pci_write_config_byte(ibm, 0x41, 0xF4);		/* ??? */
			pci_write_config_byte(ibm, PCI_IO_BASE, 0xF0);	/* ??? */
			pci_write_config_byte(ibm, PCI_IO_LIMIT, 0x00);	/* ??? */
		}
#endif
		if (!ACCESS_FBINFO(devflags.noinit)) {
			if (x7AF4 & 8) {
				hw->MXoptionReg |= 0x40;
				pci_write_config_dword(ACCESS_FBINFO(pcidev), PCI_OPTION_REG, hw->MXoptionReg);
			}
			mga_setr(M_EXTVGA_INDEX, 0x06, 0x50);
		}
	}
	DAC1064_setmclk(PMINFO hw, DAC1064_OPT_RESERVED | DAC1064_OPT_MDIV2 | DAC1064_OPT_GDIV1 | DAC1064_OPT_SCLK_PLL, 133333);
	if (ACCESS_FBINFO(devflags.noinit))
		return;
	MGAG100_setPixClock(PMINFO 4, 25175);
	MGAG100_setPixClock(PMINFO 5, 28322);
	if (x7AF4 & 0x10) {
		b = inDAC1064(PMINFO M1064_XGENIODATA) & ~1;
		outDAC1064(PMINFO M1064_XGENIODATA, b);
		b = inDAC1064(PMINFO M1064_XGENIOCTRL) | 1;
		outDAC1064(PMINFO M1064_XGENIOCTRL, b);
	}
}
#endif

#ifdef CONFIG_FB_MATROX_MYSTIQUE
static void MGA1064_restore(WPMINFO struct matrox_hw_state* hw, struct matrox_hw_state* oldhw, struct display* p) {
	int i;
	CRITFLAGS

	DBG("MGA1064_restore")

	CRITBEGIN

	pci_write_config_dword(ACCESS_FBINFO(pcidev), PCI_OPTION_REG, hw->MXoptionReg);
	mga_outb(M_IEN, 0x00);
	mga_outb(M_CACHEFLUSH, 0x00);

	CRITEND

	DAC1064_restore_1(PMINFO hw, oldhw);
	matroxfb_vgaHWrestore(PMINFO hw, oldhw);
	for (i = 0; i < 6; i++)
		mga_setr(M_EXTVGA_INDEX, i, hw->CRTCEXT[i]);
	DAC1064_restore_2(PMINFO hw, oldhw, p);
}
#endif

#ifdef CONFIG_FB_MATROX_G100
static void MGAG100_restore(WPMINFO struct matrox_hw_state* hw, struct matrox_hw_state* oldhw, struct display* p) {
	int i;
	CRITFLAGS

	DBG("MGAG100_restore")

	CRITBEGIN

	pci_write_config_dword(ACCESS_FBINFO(pcidev), PCI_OPTION_REG, hw->MXoptionReg);
	CRITEND

	DAC1064_restore_1(PMINFO hw, oldhw);
	matroxfb_vgaHWrestore(PMINFO hw, oldhw);
#ifdef CONFIG_FB_MATROX_32MB
	if (ACCESS_FBINFO(devflags.support32MB))
		mga_setr(M_EXTVGA_INDEX, 8, hw->CRTCEXT[8]);
#endif
	for (i = 0; i < 6; i++)
		mga_setr(M_EXTVGA_INDEX, i, hw->CRTCEXT[i]);
	DAC1064_restore_2(PMINFO hw, oldhw, p);
}
#endif

#ifdef CONFIG_FB_MATROX_MYSTIQUE
struct matrox_switch matrox_mystique = {
	MGA1064_preinit, MGA1064_reset, MGA1064_init, MGA1064_restore, DAC1064_selhwcursor
};
EXPORT_SYMBOL(matrox_mystique);
#endif

#ifdef CONFIG_FB_MATROX_G100
struct matrox_switch matrox_G100 = {
	MGAG100_preinit, MGAG100_reset, MGAG100_init, MGAG100_restore, DAC1064_selhwcursor
};
EXPORT_SYMBOL(matrox_G100);
#endif

#ifdef NEED_DAC1064
EXPORT_SYMBOL(DAC1064_global_init);
EXPORT_SYMBOL(DAC1064_global_restore);
#endif