atyfb_base.c

内核linux2.4.20,可跟rtlinux3.2打补丁 组成实时linux系统,编译内核

	    pll = aty_chips[j].pll;
	    mclk = aty_chips[j].mclk;
	    info->features = aty_chips[j].features;
	    goto found;
	}
    printk("atyfb: Unknown mach64 0x%04x rev 0x%04x\n", type, rev);
    return 0;

found:
    printk("atyfb: %s [0x%04x rev 0x%02x] ", chipname, type, rev);
#ifdef CONFIG_FB_ATY_GX
    if (!M64_HAS(INTEGRATED)) {
	u32 stat0;
	u8 dac_type, dac_subtype, clk_type;
	stat0 = aty_ld_le32(CONFIG_STAT0, info);
	info->bus_type = (stat0 >> 0) & 0x07;
	info->ram_type = (stat0 >> 3) & 0x07;
	ramname = aty_gx_ram[info->ram_type];
	/* FIXME: clockchip/RAMDAC probing? */
	dac_type = (aty_ld_le32(DAC_CNTL, info) >> 16) & 0x07;
#ifdef CONFIG_ATARI
	clk_type = CLK_ATI18818_1;
	dac_type = (stat0 >> 9) & 0x07;
	if (dac_type == 0x07)
	    dac_subtype = DAC_ATT20C408;
	else
	    dac_subtype = (aty_ld_8(SCRATCH_REG1 + 1, info) & 0xF0) | dac_type;
#else
	dac_type = DAC_IBMRGB514;
	dac_subtype = DAC_IBMRGB514;
	clk_type = CLK_IBMRGB514;
#endif
	switch (dac_subtype) {
	    case DAC_IBMRGB514:
		info->dac_ops = &aty_dac_ibm514;
		break;
	    case DAC_ATI68860_B:
	    case DAC_ATI68860_C:
		info->dac_ops = &aty_dac_ati68860b;
		break;
	    case DAC_ATT20C408:
	    case DAC_ATT21C498:
		info->dac_ops = &aty_dac_att21c498;
		break;
	    default:
		printk(" atyfb_set_par: DAC type not implemented yet!\n");
		info->dac_ops = &aty_dac_unsupported;
		break;
	}
	switch (clk_type) {
	    case CLK_ATI18818_1:
		info->pll_ops = &aty_pll_ati18818_1;
		break;
	    case CLK_STG1703:
		info->pll_ops = &aty_pll_stg1703;
		break;
	    case CLK_CH8398:
		info->pll_ops = &aty_pll_ch8398;
		break;
	    case CLK_ATT20C408:
		info->pll_ops = &aty_pll_att20c408;
		break;
	    case CLK_IBMRGB514:
		info->pll_ops = &aty_pll_ibm514;
		break;
	    default:
		printk(" atyfb_set_par: CLK type not implemented yet!");
		info->pll_ops = &aty_pll_unsupported;
		break;
	}
    }
#endif /* CONFIG_FB_ATY_GX */
#ifdef CONFIG_FB_ATY_CT
    if (M64_HAS(INTEGRATED)) {
	info->bus_type = PCI;
	info->ram_type = (aty_ld_le32(CONFIG_STAT0, info) & 0x07);
	ramname = aty_ct_ram[info->ram_type];
	info->dac_ops = &aty_dac_ct;
	info->pll_ops = &aty_pll_ct;
	/* for many chips, the mclk is 67 MHz for SDRAM, 63 MHz otherwise */
	if (mclk == 67 && info->ram_type < SDRAM)
	    mclk = 63;
    }
#endif /* CONFIG_FB_ATY_CT */

    info->ref_clk_per = 1000000000000ULL/14318180;
    xtal = "14.31818";
    if (M64_HAS(GTB_DSP) && (pll_ref_div = aty_ld_pll(PLL_REF_DIV, info))) {
	int diff1, diff2;
	diff1 = 510*14/pll_ref_div-pll;
	diff2 = 510*29/pll_ref_div-pll;
	if (diff1 < 0)
	    diff1 = -diff1;
	if (diff2 < 0)
	    diff2 = -diff2;
	if (diff2 < diff1) {
	    info->ref_clk_per = 1000000000000ULL/29498928;
	    xtal = "29.498928";
	}
    }

    i = aty_ld_le32(MEM_CNTL, info);
    gtb_memsize = M64_HAS(GTB_DSP);
    if (gtb_memsize)
	switch (i & 0xF) {	/* 0xF used instead of MEM_SIZE_ALIAS */
	    case MEM_SIZE_512K:
		info->total_vram = 0x80000;
		break;
	    case MEM_SIZE_1M:
		info->total_vram = 0x100000;
		break;
	    case MEM_SIZE_2M_GTB:
		info->total_vram = 0x200000;
		break;
	    case MEM_SIZE_4M_GTB:
		info->total_vram = 0x400000;
		break;
	    case MEM_SIZE_6M_GTB:
		info->total_vram = 0x600000;
		break;
	    case MEM_SIZE_8M_GTB:
		info->total_vram = 0x800000;
		break;
	    default:
		info->total_vram = 0x80000;
	}
    else
	switch (i & MEM_SIZE_ALIAS) {
	    case MEM_SIZE_512K:
		info->total_vram = 0x80000;
		break;
	    case MEM_SIZE_1M:
		info->total_vram = 0x100000;
		break;
	    case MEM_SIZE_2M:
		info->total_vram = 0x200000;
		break;
	    case MEM_SIZE_4M:
		info->total_vram = 0x400000;
		break;
	    case MEM_SIZE_6M:
		info->total_vram = 0x600000;
		break;
	    case MEM_SIZE_8M:
		info->total_vram = 0x800000;
		break;
	    default:
		info->total_vram = 0x80000;
	}

    if (M64_HAS(MAGIC_VRAM_SIZE)) {
	if (aty_ld_le32(CONFIG_STAT1, info) & 0x40000000)
	  info->total_vram += 0x400000;
    }

    if (default_vram) {
	info->total_vram = default_vram*1024;
	i = i & ~(gtb_memsize ? 0xF : MEM_SIZE_ALIAS);
	if (info->total_vram <= 0x80000)
	    i |= MEM_SIZE_512K;
	else if (info->total_vram <= 0x100000)
	    i |= MEM_SIZE_1M;
	else if (info->total_vram <= 0x200000)
	    i |= gtb_memsize ? MEM_SIZE_2M_GTB : MEM_SIZE_2M;
	else if (info->total_vram <= 0x400000)
	    i |= gtb_memsize ? MEM_SIZE_4M_GTB : MEM_SIZE_4M;
	else if (info->total_vram <= 0x600000)
	    i |= gtb_memsize ? MEM_SIZE_6M_GTB : MEM_SIZE_6M;
	else
	    i |= gtb_memsize ? MEM_SIZE_8M_GTB : MEM_SIZE_8M;
	aty_st_le32(MEM_CNTL, i, info);
    }
    if (default_pll)
	pll = default_pll;
    if (default_mclk)
	mclk = default_mclk;

    printk("%d%c %s, %s MHz XTAL, %d MHz PLL, %d Mhz MCLK\n",
    	   info->total_vram == 0x80000 ? 512 : (info->total_vram >> 20),
    	   info->total_vram == 0x80000 ? 'K' : 'M', ramname, xtal, pll, mclk);

    if (mclk < 44)
	info->mem_refresh_rate = 0;	/* 000 = 10 Mhz - 43 Mhz */
    else if (mclk < 50)
	info->mem_refresh_rate = 1;	/* 001 = 44 Mhz - 49 Mhz */
    else if (mclk < 55)
	info->mem_refresh_rate = 2;	/* 010 = 50 Mhz - 54 Mhz */
    else if (mclk < 66)
	info->mem_refresh_rate = 3;	/* 011 = 55 Mhz - 65 Mhz */
    else if (mclk < 75)
	info->mem_refresh_rate = 4;	/* 100 = 66 Mhz - 74 Mhz */
    else if (mclk < 80)
	info->mem_refresh_rate = 5;	/* 101 = 75 Mhz - 79 Mhz */
    else if (mclk < 100)
	info->mem_refresh_rate = 6;	/* 110 = 80 Mhz - 100 Mhz */
    else
	info->mem_refresh_rate = 7;	/* 111 = 100 Mhz and above */
    info->pll_per = 1000000/pll;
    info->mclk_per = 1000000/mclk;

#ifdef DEBUG
    if (M64_HAS(INTEGRATED)) {
	int i;
	printk("BUS_CNTL DAC_CNTL MEM_CNTL EXT_MEM_CNTL CRTC_GEN_CNTL "
	       "DSP_CONFIG DSP_ON_OFF\n"
	       "%08x %08x %08x %08x     %08x      %08x   %08x\n"
	       "PLL",
	       aty_ld_le32(BUS_CNTL, info), aty_ld_le32(DAC_CNTL, info),
	       aty_ld_le32(MEM_CNTL, info), aty_ld_le32(EXT_MEM_CNTL, info),
	       aty_ld_le32(CRTC_GEN_CNTL, info), aty_ld_le32(DSP_CONFIG, info),
	       aty_ld_le32(DSP_ON_OFF, info));
	for (i = 0; i < 16; i++)
	    printk(" %02x", aty_ld_pll(i, info));
	printk("\n");
    }
#endif

    /*
     *  Last page of 8 MB (4 MB on ISA) aperture is MMIO
     *  FIXME: we should use the auxiliary aperture instead so we can access
     *  the full 8 MB of video RAM on 8 MB boards
     */
    if (info->total_vram == 0x800000 ||
	(info->bus_type == ISA && info->total_vram == 0x400000))
	    info->total_vram -= GUI_RESERVE;

    /* Clear the video memory */
    fb_memset((void *)info->frame_buffer, 0, info->total_vram);

    disp = &info->disp;

    strcpy(info->fb_info.modename, atyfb_name);
    info->fb_info.node = -1;
    info->fb_info.fbops = &atyfb_ops;
    info->fb_info.disp = disp;
    strcpy(info->fb_info.fontname, fontname);
    info->fb_info.changevar = NULL;
    info->fb_info.switch_con = &atyfbcon_switch;
    info->fb_info.updatevar = &atyfbcon_updatevar;
    info->fb_info.blank = &atyfbcon_blank;
    info->fb_info.flags = FBINFO_FLAG_DEFAULT;

#ifdef CONFIG_PMAC_BACKLIGHT
    if (M64_HAS(G3_PB_1_1) && machine_is_compatible("PowerBook1,1")) {
	/* these bits let the 101 powerbook wake up from sleep -- paulus */
	aty_st_lcd(POWER_MANAGEMENT, aty_ld_lcd(POWER_MANAGEMENT, info)
		| (USE_F32KHZ | TRISTATE_MEM_EN), info);
    }
    if (M64_HAS(MOBIL_BUS))
	register_backlight_controller(&aty_backlight_controller, info, "ati");
#endif /* CONFIG_PMAC_BACKLIGHT */

#ifdef MODULE
    var = default_var;
#else /* !MODULE */
    memset(&var, 0, sizeof(var));
#ifdef CONFIG_PPC
    if (_machine == _MACH_Pmac) {
	    /*
	     *  FIXME: The NVRAM stuff should be put in a Mac-specific file, as it
	     *         applies to all Mac video cards
	     */
	    if (mode_option) {
		if (!mac_find_mode(&var, &info->fb_info, mode_option, 8))
		    var = default_var;
	    } else {
		if (default_vmode == VMODE_CHOOSE) {
		    if (M64_HAS(G3_PB_1024x768))
			/* G3 PowerBook with 1024x768 LCD */
			default_vmode = VMODE_1024_768_60;
		    else if (machine_is_compatible("iMac"))
			default_vmode = VMODE_1024_768_75;
		    else if (machine_is_compatible("PowerBook2,1"))
			/* iBook with 800x600 LCD */
			default_vmode = VMODE_800_600_60;
		    else
			default_vmode = VMODE_640_480_67;
		    sense = read_aty_sense(info);
		    printk(KERN_INFO "atyfb: monitor sense=%x, mode %d\n",
			   sense, mac_map_monitor_sense(sense));
		}
		if (default_vmode <= 0 || default_vmode > VMODE_MAX)
		    default_vmode = VMODE_640_480_60;
#ifdef CONFIG_NVRAM
		if (default_cmode == CMODE_NVRAM)
		    default_cmode = nvram_read_byte(NV_CMODE);
#endif
		if (default_cmode < CMODE_8 || default_cmode > CMODE_32)
		    default_cmode = CMODE_8;
		if (mac_vmode_to_var(default_vmode, default_cmode, &var))
		    var = default_var;
	    }
    }
    else if (!fb_find_mode(&var, &info->fb_info, mode_option, NULL, 0, NULL, 8))
	var = default_var;
#else /* !CONFIG_PPC */
#ifdef __sparc__
    if (mode_option) {
    	if (!fb_find_mode(&var, &info->fb_info, mode_option, NULL, 0, NULL, 8))
	    var = default_var;
    } else
	var = default_var;
#else
    if (!fb_find_mode(&var, &info->fb_info, mode_option, NULL, 0, NULL, 8))
	var = default_var;
#endif /* !__sparc__ */
#endif /* !CONFIG_PPC */
#endif /* !MODULE */
    if (noaccel)
        var.accel_flags &= ~FB_ACCELF_TEXT;
    else
        var.accel_flags |= FB_ACCELF_TEXT;

    if (var.yres == var.yres_virtual) {
	u32 vram = (info->total_vram - (PAGE_SIZE << 2));
	var.yres_virtual = ((vram * 8) / var.bits_per_pixel) / var.xres_virtual;
	if (var.yres_virtual < var.yres)
		var.yres_virtual = var.yres;
    }

    if (atyfb_decode_var(&var, &info->default_par, info)) {
	printk("atyfb: can't set default video mode\n");
	return 0;
    }

#ifdef __sparc__
    atyfb_save_palette(&info->fb_info, 0);
#endif
    for (j = 0; j < 16; j++) {
	k = color_table[j];
	info->palette[j].red = default_red[k];
	info->palette[j].green = default_grn[k];
	info->palette[j].blue = default_blu[k];
    }

#ifdef CONFIG_FB_ATY_CT
    if (curblink && M64_HAS(INTEGRATED)) {
	info->cursor = aty_init_cursor(info);
	if (info->cursor) {
	    info->dispsw.cursor = atyfb_cursor;
	    info->dispsw.set_font = atyfb_set_font;
	}
    }
#endif /* CONFIG_FB_ATY_CT */

    atyfb_set_var(&var, -1, &info->fb_info);

    if (register_framebuffer(&info->fb_info) < 0)
	return 0;

    info->next = fb_list;
    fb_list = info;

    printk("fb%d: %s frame buffer device on %s\n",
	   GET_FB_IDX(info->fb_info.node), atyfb_name, name);
    return 1;
}

int __init atyfb_init(void)
{
#if defined(CONFIG_PCI)
    struct pci_dev *pdev = NULL;
    struct fb_info_aty *info;
    unsigned long addr, res_start, res_size;
    int i;
#ifdef __sparc__
    extern void (*prom_palette) (int);
    extern int con_is_present(void);
    struct pcidev_cookie *pcp;
    char prop[128];
    int node, len, j;
    u32 mem, chip_id;

    /* Do not attach when we have a serial console. */
    if (!con_is_present())
	return -ENXIO;
#else
    u16 tmp;
    int aux_app;
    unsigned long raddr;
#endif

    while ((pdev = pci_find_device(PCI_VENDOR_ID_ATI, PCI_ANY_ID, pdev))) {
	if ((pdev->class >> 16) == PCI_BASE_CLASS_DISPLAY) {
	    struct resource *rp;
#ifndef __sparc__
	    struct resource *rrp;
#endif

	    for (i = sizeof(aty_chips)/sizeof(*aty_chips)-1; i >= 0; i--)
		if (pdev->device == aty_chips[i].pci_id)
		    break;
	    if (i < 0)
		continue;

	    info = kmalloc(sizeof(struct fb_info_aty), GFP_ATOMIC);
	    if (!info) {
		printk("atyfb_init: can't alloc fb_info_aty\n");
		return -ENXIO;
	    }
	    memset(info, 0, sizeof(struct fb_info_aty));

	    rp = &pdev->resource[0];
	    if (rp->flags & IORESOURCE_IO)
		    rp = &pdev->resource[1];
	    addr = rp->start;
	    if (!addr)
		continue;

	    res_start = rp->start;
	    res_size = rp->end-rp->start+1;
	    if (!request_mem_region(res_start, res_size, "atyfb"))
		continue;

#ifdef __sparc__
	    /*
	     * Map memory-mapped registers.
	     */
	    info->ati_regbase = addr + 0x7ffc00UL;
	    info->ati_regbase_phys = addr + 0x7ffc00UL;

	    /*
	     * Map in big-endian aperture.
	     */
	    info->frame_buffer = (unsigned long) addr + 0x800000UL;
	    info->frame_buffer_phys = addr + 0x800000UL;

	    /*
	     * Figure mmap addresses from PCI config space.
	     * Split Framebuffer in big- and little-endian halfs.
	     */
	    for (i = 0; i < 6 && pdev->resource[i].start; i++)
		/* nothing */;
	    j = i + 4;

	    info->mmap_map = kmalloc(j * sizeof(*info->mmap_map), GFP_ATOMIC);
	    if (!info->mmap_map) {
		printk("atyfb_init: can't alloc mmap_map\n");
		kfree(info);
		release_mem_region(res_start, res_size);
		return -ENXIO;
	    }
	    memset(info->mmap_map, 0, j * sizeof(*info->mmap_map));

	    for (i =