/*
 *
 * Hardware accelerated Matrox Millennium I, II, Mystique, G100, G200 and G400
 *
 * (c) 1998-2002 Petr Vandrovec <vandrove@vc.cvut.cz>
 *
 * Portions Copyright (c) 2001 Matrox Graphics Inc.
 *
 * Version: 1.65 2002/08/14
 *
 * MTRR stuff: 1998 Tom Rini <trini@kernel.crashing.org>
 *
 * Contributors: "menion?" <menion@mindless.com>
 *                     Betatesting, fixes, ideas
 *
 *               "Kurt Garloff" <garloff@suse.de>
 *                     Betatesting, fixes, ideas, videomodes, videomodes timmings
 *
 *               "Tom Rini" <trini@kernel.crashing.org>
 *                     MTRR stuff, PPC cleanups, betatesting, fixes, ideas
 *
 *               "Bibek Sahu" <scorpio@dodds.net>
 *                     Access device through readb|w|l and write b|w|l
 *                     Extensive debugging stuff
 *
 *               "Daniel Haun" <haund@usa.net>
 *                     Testing, hardware cursor fixes
 *
 *               "Scott Wood" <sawst46+@pitt.edu>
 *                     Fixes
 *
 *               "Gerd Knorr" <kraxel@goldbach.isdn.cs.tu-berlin.de>
 *                     Betatesting
 *
 *               "Kelly French" <targon@hazmat.com>
 *               "Fernando Herrera" <fherrera@eurielec.etsit.upm.es>
 *                     Betatesting, bug reporting
 *
 *               "Pablo Bianucci" <pbian@pccp.com.ar>
 *                     Fixes, ideas, betatesting
 *
 *               "Inaky Perez Gonzalez" <inaky@peloncho.fis.ucm.es>
 *                     Fixes, enhandcements, ideas, betatesting
 *
 *               "Ryuichi Oikawa" <roikawa@rr.iiij4u.or.jp>
 *                     PPC betatesting, PPC support, backward compatibility
 *
 *               "Paul Womar" <Paul@pwomar.demon.co.uk>
 *               "Owen Waller" <O.Waller@ee.qub.ac.uk>
 *                     PPC betatesting
 *
 *               "Thomas Pornin" <pornin@bolet.ens.fr>
 *                     Alpha betatesting
 *
 *               "Pieter van Leuven" <pvl@iae.nl>
 *               "Ulf Jaenicke-Roessler" <ujr@physik.phy.tu-dresden.de>
 *                     G100 testing
 *
 *               "H. Peter Arvin" <hpa@transmeta.com>
 *                     Ideas
 *
 *               "Cort Dougan" <cort@cs.nmt.edu>
 *                     CHRP fixes and PReP cleanup
 *
 *               "Mark Vojkovich" <mvojkovi@ucsd.edu>
 *                     G400 support
 *
 *               "Samuel Hocevar" <sam@via.ecp.fr>
 *                     Fixes
 *
 *               "Anton Altaparmakov" <AntonA@bigfoot.com>
 *                     G400 MAX/non-MAX distinction
 *
 *               "Ken Aaker" <kdaaker@rchland.vnet.ibm.com>
 *                     memtype extension (needed for GXT130P RS/6000 adapter)
 *
 *               "Uns Lider" <unslider@miranda.org>
 *                     G100 PLNWT fixes
 *
 *               "Denis Zaitsev" <zzz@cd-club.ru>
 *                     Fixes
 *
 *               "Mike Pieper" <mike@pieper-family.de>
 *                     TVOut enhandcements, V4L2 control interface.
 *
 *               "Diego Biurrun" <diego@biurrun.de>
 *                     DFP testing
 *
 * (following author is not in any relation with this code, but his code
 *  is included in this driver)
 *
 * Based on framebuffer driver for VBE 2.0 compliant graphic boards
 *     (c) 1998 Gerd Knorr <kraxel@cs.tu-berlin.de>
 *
 * (following author is not in any relation with this code, but his ideas
 *  were used when writing this driver)
 *
 *               FreeVBE/AF (Matrox), "Shawn Hargreaves" <shawn@talula.demon.co.uk>
 *
 */

#include <linux/version.h>

#include "matroxfb_base.h"
#include "matroxfb_misc.h"
#include "matroxfb_accel.h"
#include "matroxfb_DAC1064.h"
#include "matroxfb_Ti3026.h"
#include "matroxfb_maven.h"
#include "matroxfb_crtc2.h"
#include "matroxfb_g450.h"
#include <linux/matroxfb.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/uaccess.h>

#ifdef CONFIG_PPC_PMAC
#include <asm/machdep.h>
unsigned char nvram_read_byte(int);
static int default_vmode = VMODE_NVRAM;
static int default_cmode = CMODE_NVRAM;
#endif

static void matroxfb_unregister_device(struct matrox_fb_info* minfo);

/* --------------------------------------------------------------------- */

/*
 * card parameters
 */

/* --------------------------------------------------------------------- */

static struct fb_var_screeninfo vesafb_defined = {
        640,480,640,480,/* W,H, W, H (virtual) load xres,xres_virtual*/
        0,0,            /* virtual -> visible no offset */
        8,              /* depth -> load bits_per_pixel */
        0,              /* greyscale ? */
        {0,0,0},        /* R */
        {0,0,0},        /* G */
        {0,0,0},        /* B */
        {0,0,0},        /* transparency */
        0,              /* standard pixel format */
        FB_ACTIVATE_NOW,
        -1,-1,
        FB_ACCELF_TEXT, /* accel flags */
        39721L,48L,16L,33L,10L,
        96L,2L,~0,      /* No sync info */
        FB_VMODE_NONINTERLACED,
};



/* --------------------------------------------------------------------- */
static void update_crtc2(struct matrox_fb_info *minfo, unsigned int pos)
{
        struct matroxfb_dh_fb_info *info = minfo->crtc2.info;

        /* Make sure that displays are compatible */
        if (info && (info->fbcon.var.bits_per_pixel == minfo->fbcon.var.bits_per_pixel)
                 && (info->fbcon.var.xres_virtual == minfo->fbcon.var.xres_virtual)
                 && (info->fbcon.var.green.length == minfo->fbcon.var.green.length)
                 ) {
                switch (minfo->fbcon.var.bits_per_pixel) {
                        case 16:
                        case 32:
                                pos = pos * 8;
                                if (info->interlaced) {
                                        mga_outl(0x3C2C, pos);
                                        mga_outl(0x3C28, pos + minfo->fbcon.var.xres_virtual * minfo->fbcon.var.bits_per_pixel / 8);
                                } else {
                                        mga_outl(0x3C28, pos);
                                }
                                break;
                }
        }
}

static void matroxfb_crtc1_panpos(struct matrox_fb_info *minfo)
{
        if (minfo->crtc1.panpos >= 0) {
                unsigned long flags;
                int panpos;

                matroxfb_DAC_lock_irqsave(flags);
                panpos = minfo->crtc1.panpos;
                if (panpos >= 0) {
                        unsigned int extvga_reg;

                        minfo->crtc1.panpos = -1; /* No update pending anymore */
                        extvga_reg = mga_inb(M_EXTVGA_INDEX);
                        mga_setr(M_EXTVGA_INDEX, 0x00, panpos);
                        if (extvga_reg != 0x00) {
                                mga_outb(M_EXTVGA_INDEX, extvga_reg);
                        }
                }
                matroxfb_DAC_unlock_irqrestore(flags);
        }
}

static irqreturn_t matrox_irq(int irq, void *dev_id)
{
        u_int32_t status;
        int handled = 0;
        struct matrox_fb_info *minfo = dev_id;

        status = mga_inl(M_STATUS);

        if (status & 0x20) {
                mga_outl(M_ICLEAR, 0x20);
                minfo->crtc1.vsync.cnt++;
                matroxfb_crtc1_panpos(minfo);
                wake_up_interruptible(&minfo->crtc1.vsync.wait);
                handled = 1;
        }
        if (status & 0x200) {
                mga_outl(M_ICLEAR, 0x200);
                minfo->crtc2.vsync.cnt++;
                wake_up_interruptible(&minfo->crtc2.vsync.wait);
                handled = 1;
        }
        return IRQ_RETVAL(handled);
}

int matroxfb_enable_irq(struct matrox_fb_info *minfo, int reenable)
{
        u_int32_t bm;

        if (minfo->devflags.accelerator == FB_ACCEL_MATROX_MGAG400)
                bm = 0x220;
        else
                bm = 0x020;

        if (!test_and_set_bit(0, &minfo->irq_flags)) {
                if (request_irq(minfo->pcidev->irq, matrox_irq,
                                IRQF_SHARED, "matroxfb", minfo)) {
                        clear_bit(0, &minfo->irq_flags);
                        return -EINVAL;
                }
                /* Clear any pending field interrupts */
                mga_outl(M_ICLEAR, bm);
                mga_outl(M_IEN, mga_inl(M_IEN) | bm);
        } else if (reenable) {
                u_int32_t ien;

                ien = mga_inl(M_IEN);
                if ((ien & bm) != bm) {
                        printk(KERN_DEBUG "matroxfb: someone disabled IRQ [%08X]\n", ien);
                        mga_outl(M_IEN, ien | bm);
                }
        }
        return 0;
}

static void matroxfb_disable_irq(struct matrox_fb_info *minfo)
{
        if (test_and_clear_bit(0, &minfo->irq_flags)) {
                /* Flush pending pan-at-vbl request... */
                matroxfb_crtc1_panpos(minfo);
                if (minfo->devflags.accelerator == FB_ACCEL_MATROX_MGAG400)
                        mga_outl(M_IEN, mga_inl(M_IEN) & ~0x220);
                else
                        mga_outl(M_IEN, mga_inl(M_IEN) & ~0x20);
                free_irq(minfo->pcidev->irq, minfo);
        }
}

int matroxfb_wait_for_sync(struct matrox_fb_info *minfo, u_int32_t crtc)
{
        struct matrox_vsync *vs;
        unsigned int cnt;
        int ret;

        switch (crtc) {
                case 0:
                        vs = &minfo->crtc1.vsync;
                        break;
                case 1:
                        if (minfo->devflags.accelerator != FB_ACCEL_MATROX_MGAG400) {
                                return -ENODEV;
                        }
                        vs = &minfo->crtc2.vsync;
                        break;
                default:
                        return -ENODEV;
        }
        ret = matroxfb_enable_irq(minfo, 0);
        if (ret) {
                return ret;
        }

        cnt = vs->cnt;
        ret = wait_event_interruptible_timeout(vs->wait, cnt != vs->cnt, HZ/10);
        if (ret < 0) {
                return ret;
        }
        if (ret == 0) {
                matroxfb_enable_irq(minfo, 1);
                return -ETIMEDOUT;
        }
        return 0;
}

/* --------------------------------------------------------------------- */

static void matrox_pan_var(struct matrox_fb_info *minfo,
                           struct fb_var_screeninfo *var)
{
        unsigned int pos;
        unsigned short p0, p1, p2;
        unsigned int p3;
        int vbl;
        unsigned long flags;

        CRITFLAGS

        DBG(__func__)

        if (minfo->dead)
                return;

        minfo->fbcon.var.xoffset = var->xoffset;
        minfo->fbcon.var.yoffset = var->yoffset;
        pos = (minfo->fbcon.var.yoffset * minfo->fbcon.var.xres_virtual + minfo->fbcon.var.xoffset) * minfo->curr.final_bppShift / 32;
        pos += minfo->curr.ydstorg.chunks;
        p0 = minfo->hw.CRTC[0x0D] = pos & 0xFF;
        p1 = minfo->hw.CRTC[0x0C] = (pos & 0xFF00) >> 8;
        p2 = minfo->hw.CRTCEXT[0] = (minfo->hw.CRTCEXT[0] & 0xB0) | ((pos >> 16) & 0x0F) | ((pos >> 14) & 0x40);
        p3 = minfo->hw.CRTCEXT[8] = pos >> 21;

        /* FB_ACTIVATE_VBL and we can acquire interrupts? Honor FB_ACTIVATE_VBL then... */
        vbl = (var->activate & FB_ACTIVATE_VBL) && (matroxfb_enable_irq(minfo, 0) == 0);

        CRITBEGIN

        matroxfb_DAC_lock_irqsave(flags);
        mga_setr(M_CRTC_INDEX, 0x0D, p0);
        mga_setr(M_CRTC_INDEX, 0x0C, p1);
        if (minfo->devflags.support32MB)
                mga_setr(M_EXTVGA_INDEX, 0x08, p3);
        if (vbl) {
                minfo->crtc1.panpos = p2;
        } else {
                /* Abort any pending change */
                minfo->crtc1.panpos = -1;
                mga_setr(M_EXTVGA_INDEX, 0x00, p2);
        }
        matroxfb_DAC_unlock_irqrestore(flags);

        update_crtc2(minfo, pos);

        CRITEND
}

static void matroxfb_remove(struct matrox_fb_info *minfo, int dummy)
{
        /* Currently we are holding big kernel lock on all dead & usecount updates.
         * Destroy everything after all users release it. Especially do not unregister
         * framebuffer and iounmap memory, neither fbmem nor fbcon-cfb* does not check
         * for device unplugged when in use.
         * In future we should point mmio.vbase & video.vbase somewhere where we can
         * write data without causing too much damage...
         */

        minfo->dead = 1;
        if (minfo->usecount) {
                /* destroy it later */
                return;
        }
        matroxfb_unregister_device(minfo);
        unregister_framebuffer(&minfo->fbcon);
        matroxfb_g450_shutdown(minfo);
#ifdef CONFIG_MTRR
        if (minfo->mtrr.vram_valid)
                mtrr_del(minfo->mtrr.vram, minfo->video.base, minfo->video.len);
#endif
        mga_iounmap(minfo->mmio.vbase);
        mga_iounmap(minfo->video.vbase);
        release_mem_region(minfo->video.base, minfo->video.len_maximum);
        release_mem_region(minfo->mmio.base, 16384);
        kfree(minfo);
}

        /*
         * Open/Release the frame buffer device
         */

static int matroxfb_open(struct fb_info *info, int user)
{
        struct matrox_fb_info *minfo = info2minfo(info);

        DBG_LOOP(__func__)

        if (minfo->dead) {
                return -ENXIO;
        }
        minfo->usecount++;
        if (user) {
                minfo->userusecount++;
        }
        return(0);
}

static int matroxfb_release(struct fb_info *info, int user)
{
        struct matrox_fb_info *minfo = info2minfo(info);

        DBG_LOOP(__func__)

        if (user) {
                if (0 == --minfo->userusecount) {
                        matroxfb_disable_irq(minfo);
                }
        }
        if (!(--minfo->usecount) && minfo->dead) {
                matroxfb_remove(minfo, 0);
        }
        return(0);
}

static int matroxfb_pan_display(struct fb_var_screeninfo *var,
                struct fb_info* info) {
        struct matrox_fb_info *minfo = info2minfo(info);

        DBG(__func__)

        matrox_pan_var(minfo, var);
        return 0;
}

static int matroxfb_get_final_bppShift(const struct matrox_fb_info *minfo,
                                       int bpp)
{
        int bppshft2;

        DBG(__func__)

        bppshft2 = bpp;
        if (!bppshft2) {
                return 8;
        }
        if (isInterleave(minfo))
                bppshft2 >>= 1;
        if (minfo->devflags.video64bits)
                bppshft2 >>= 1;
        return bppshft2;
}

static int matroxfb_test_and_set_rounding(const struct matrox_fb_info *minfo,
                                          int xres, int bpp)
{
        int over;
        int rounding;

        DBG(__func__)

        switch (bpp) {
                case 0:         return xres;
                case 4:         rounding = 128;
                                break;
                case 8:         rounding = 64;  /* doc says 64; 32 is OK for G400 */
                                break;
                case 16:        rounding = 32;
                                break;
                case 24:        rounding = 64;  /* doc says 64; 32 is OK for G400 */
                                break;
                default:        rounding = 16;
                                /* on G400, 16 really does not work */
                                if (minfo->devflags.accelerator == FB_ACCEL_MATROX_MGAG400)
                                        rounding = 32;
                                break;
        }
        if (isInterleave(minfo)) {
                rounding *= 2;
        }
        over = xres % rounding;
        if (over)
                xres += rounding-over;
        return xres;
}

static int matroxfb_pitch_adjust(const struct matrox_fb_info *minfo, int xres,
                                 int bpp)
{
        const int* width;
        int xres_new;

        DBG(__func__)

        if (!bpp) return xres;

        width = minfo->capable.vxres;

        if (minfo->devflags.precise_width) {
                while (*width) {
                        if ((*width >= xres) && (matroxfb_test_and_set_rounding(minfo, *width, bpp) == *width)) {
                                break;
                        }
                        width++;
                }
                xres_new = *width;
        } else {
                xres_new = matroxfb_test_and_set_rounding(minfo, xres, bpp);
        }
        return xres_new;
}

static int matroxfb_get_cmap_len(struct fb_var_screeninfo *var) {

        DBG(__func__)

        switch (var->bits_per_pixel) {
                case 4:
                        return 16;      /* pseudocolor... 16 entries HW palette */
                case 8:
                        return 256;     /* pseudocolor... 256 entries HW palette */
                case 16:
                        return 16;      /* directcolor... 16 entries SW palette */
                                        /* Mystique: truecolor, 16 entries SW palette, HW palette hardwired into 1:1 mapping */
                case 24:
                        return 16;      /* directcolor... 16 entries SW palette */
                                        /* Mystique: truecolor, 16 entries SW palette, HW palette hardwired into 1:1 mapping */
                case 32:
                        return 16;      /* directcolor... 16 entries SW palette */
                                        /* Mystique: truecolor, 16 entries SW palette, HW palette hardwired into 1:1 mapping */
        }
        return 16;      /* return something reasonable... or panic()? */
}

static int matroxfb_decode_var(const struct matrox_fb_info *minfo,
                               struct fb_var_screeninfo *var, int *visual,
                               int *video_cmap_len, unsigned int* ydstorg)
{
        struct RGBT {
                unsigned char bpp;
                struct {
                        unsigned char offset,
                                      length;
                } red,
                  green,
                  blue,
                  transp;
                signed char visual;
        };
        static const struct RGBT table[]= {
                { 8,{ 0,8},{0,8},{0,8},{ 0,0},MX_VISUAL_PSEUDOCOLOR},
                {15,{10,5},{5,5},{0,5},{15,1},MX_VISUAL_DIRECTCOLOR},
                {16,{11,5},{5,6},{0,5},{ 0,0},MX_VISUAL_DIRECTCOLOR},
                {24,{16,8},{8,8},{0,8},{ 0,0},MX_VISUAL_DIRECTCOLOR},
                {32,{16,8},{8,8},{0,8},{24,8},MX_VISUAL_DIRECTCOLOR}
        };
        struct RGBT const *rgbt;
        unsigned int bpp = var->bits_per_pixel;
        unsigned int vramlen;
        unsigned int memlen;

        DBG(__func__)

        switch (bpp) {
                case 4:  if (!minfo->capable.cfb4) return -EINVAL;
                         break;
                case 8:  break;
                case 16: break;
                case 24: break;
                case 32: break;
                default: return -EINVAL;
        }
        *ydstorg = 0;
        vramlen = minfo->video.len_usable;
        if (var->yres_virtual < var->yres)
                var->yres_virtual = var->yres;
        if (var->xres_virtual < var->xres)
                var->xres_virtual = var->xres;

        var->xres_virtual = matroxfb_pitch_adjust(minfo, var->xres_virtual, bpp);
        memlen = var->xres_virtual * bpp * var->yres_virtual / 8;
        if (memlen > vramlen) {
                var->yres_virtual = vramlen * 8 / (var->xres_virtual * bpp);
                memlen = var->xres_virtual * bpp * var->yres_virtual / 8;
        }
        /* There is hardware bug that no line can cross 4MB boundary */
        /* give up for CFB24, it is impossible to easy workaround it */
        /* for other try to do something */
        if (!minfo->capable.cross4MB && (memlen > 0x400000)) {
                if (bpp == 24) {
                        /* sorry */
                } else {
                        unsigned int linelen;
                        unsigned int m1 = linelen = var->xres_virtual * bpp / 8;
                        unsigned int m2 = PAGE_SIZE;    /* or 128 if you do not need PAGE ALIGNED address */
                        unsigned int max_yres;

                        while (m1) {
                                int t;

                                while (m2 >= m1) m2 -= m1;
                                t = m1;
                                m1 = m2;
                                m2 = t;
                        }
                        m2 = linelen * PAGE_SIZE / m2;
                        *ydstorg = m2 = 0x400000 % m2;
                        max_yres = (vramlen - m2) / linelen;
                        if (var->yres_virtual > max_yres)
                                var->yres_virtual = max_yres;
                }
        }
        /* YDSTLEN contains only signed 16bit value */
        if (var->yres_virtual > 32767)
                var->yres_virtual = 32767;
        /* we must round yres/xres down, we already rounded y/xres_virtual up
           if it was possible. We should return -EINVAL, but I disagree */
        if (var->yres_virtual < var->yres)
                var->yres = var->yres_virtual;
        if (var->xres_virtual < var->xres)
                var->xres = var->xres_virtual;
        if (var->xoffset + var->xres > var->xres_virtual)
                var->xoffset = var->xres_virtual - var->xres;
        if (var->yoffset + var->yres > var->yres_virtual)
                var->yoffset = var->yres_virtual - var->yres;

        if (bpp == 16 && var->green.length == 5) {
                bpp--; /* an artificial value - 15 */
        }

        for (rgbt = table; rgbt->bpp < bpp; rgbt++);
#define SETCLR(clr)\
        var->clr.offset = rgbt->clr.offset;\
        var->clr.length = rgbt->clr.length
        SETCLR(red);
        SETCLR(green);
        SETCLR(blue);
        SETCLR(transp);
#undef  SETCLR
        *visual = rgbt->visual;

        if (bpp > 8)
                dprintk("matroxfb: truecolor: "
                        "size=%d:%d:%d:%d, shift=%d:%d:%d:%d\n",
                        var->transp.length, var->red.length, var->green.length, var->blue.length,
                        var->transp.offset, var->red.offset, var->green.offset, var->blue.offset);

        *video_cmap_len = matroxfb_get_cmap_len(var);
        dprintk(KERN_INFO "requested %d*%d/%dbpp (%d*%d)\n", var->xres, var->yres, var->bits_per_pixel,
                                var->xres_virtual, var->yres_virtual);
        return 0;
}

static int matroxfb_setcolreg(unsigned regno, unsigned red, unsigned green,
                              unsigned blue, unsigned transp,
                              struct fb_info *fb_info)
{
        struct matrox_fb_info* minfo = container_of(fb_info, struct matrox_fb_info, fbcon);

        DBG(__func__)

        /*
         *  Set a single color register. The values supplied are
         *  already rounded down to the hardware's capabilities
         *  (according to the entries in the `var' structure). Return
         *  != 0 for invalid regno.
         */

        if (regno >= minfo->curr.cmap_len)
                return 1;

        if (minfo->fbcon.var.grayscale) {
                /* gray = 0.30*R + 0.59*G + 0.11*B */
                red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
        }

        red = CNVT_TOHW(red, minfo->fbcon.var.red.length);
        green = CNVT_TOHW(green, minfo->fbcon.var.green.length);
        blue = CNVT_TOHW(blue, minfo->fbcon.var.blue.length);
        transp = CNVT_TOHW(transp, minfo->fbcon.var.transp.length);

        switch (minfo->fbcon.var.bits_per_pixel) {
        case 4:
        case 8:
                mga_outb(M_DAC_REG, regno);
                mga_outb(M_DAC_VAL, red);
                mga_outb(M_DAC_VAL, green);
                mga_outb(M_DAC_VAL, blue);
                break;
        case 16:
                if (regno >= 16)
                        break;
                {
                        u_int16_t col =
                                (red << minfo->fbcon.var.red.offset)     |
                                (green << minfo->fbcon.var.green.offset) |
                                (blue << minfo->fbcon.var.blue.offset)   |
                                (transp << minfo->fbcon.var.transp.offset); /* for 1:5:5:5 */
                        minfo->cmap[regno] = col | (col << 16);
                }
                break;
        case 24:
        case 32:
                if (regno >= 16)
                        break;
                minfo->cmap[regno] =
                        (red   << minfo->fbcon.var.red.offset)   |
                        (green << minfo->fbcon.var.green.offset) |
                        (blue  << minfo->fbcon.var.blue.offset)  |
                        (transp << minfo->fbcon.var.transp.offset);     /* 8:8:8:8 */
                break;
        }
        return 0;
}

static void matroxfb_init_fix(struct matrox_fb_info *minfo)
{
        struct fb_fix_screeninfo *fix = &minfo->fbcon.fix;
        DBG(__func__)

        strcpy(fix->id,"MATROX");

        fix->xpanstep = 8;      /* 8 for 8bpp, 4 for 16bpp, 2 for 32bpp */
        fix->ypanstep = 1;
        fix->ywrapstep = 0;
        fix->mmio_start = minfo->mmio.base;
        fix->mmio_len = minfo->mmio.len;
        fix->accel = minfo->devflags.accelerator;
}

static void matroxfb_update_fix(struct matrox_fb_info *minfo)
{
        struct fb_fix_screeninfo *fix = &minfo->fbcon.fix;
        DBG(__func__)

        mutex_lock(&minfo->fbcon.mm_lock);
        fix->smem_start = minfo->video.base + minfo->curr.ydstorg.bytes;
        fix->smem_len = minfo->video.len_usable - minfo->curr.ydstorg.bytes;
        mutex_unlock(&minfo->fbcon.mm_lock);
}

static int matroxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
{
        int err;
        int visual;
        int cmap_len;
        unsigned int ydstorg;
        struct matrox_fb_info *minfo = info2minfo(info);

        if (minfo->dead) {
                return -ENXIO;
        }
        if ((err = matroxfb_decode_var(minfo, var, &visual, &cmap_len, &ydstorg)) != 0)
                return err;
        return 0;
}

static int matroxfb_set_par(struct fb_info *info)
{
        int err;
        int visual;
        int cmap_len;
        unsigned int ydstorg;
        struct fb_var_screeninfo *var;
        struct matrox_fb_info *minfo = info2minfo(info);

        DBG(__func__)

        if (minfo->dead) {
                return -ENXIO;
        }

        var = &info->var;
        if ((err = matroxfb_decode_var(minfo, var, &visual, &cmap_len, &ydstorg)) != 0)
                return err;
        minfo->fbcon.screen_base = vaddr_va(minfo->video.vbase) + ydstorg;
        matroxfb_update_fix(minfo);
        minfo->fbcon.fix.visual = visual;
        minfo->fbcon.fix.type = FB_TYPE_PACKED_PIXELS;
        minfo->fbcon.fix.type_aux = 0;
        minfo->fbcon.fix.line_length = (var->xres_virtual * var->bits_per_pixel) >> 3;
        {
                unsigned int pos;

                minfo->curr.cmap_len = cmap_len;
                ydstorg += minfo->devflags.ydstorg;
                minfo->curr.ydstorg.bytes = ydstorg;
                minfo->curr.ydstorg.chunks = ydstorg >> (isInterleave(minfo) ? 3 : 2);
                if (var->bits_per_pixel == 4)
                        minfo->curr.ydstorg.pixels = ydstorg;
                else
                        minfo->curr.ydstorg.pixels = (ydstorg * 8) / var->bits_per_pixel;
                minfo->curr.final_bppShift = matroxfb_get_final_bppShift(minfo, var->bits_per_pixel);
                {       struct my_timming mt;
                        struct matrox_hw_state* hw;
                        int out;

                        matroxfb_var2my(var, &mt);
                        mt.crtc = MATROXFB_SRC_CRTC1;
                        /* CRTC1 delays */
                        switch (var->bits_per_pixel) {
                                case  0:        mt.delay = 31 + 0; break;
                                case 16:        mt.delay = 21 + 8; break;
                                case 24:        mt.delay = 17 + 8; break;
                                case 32:        mt.delay = 16 + 8; break;
                                default:        mt.delay = 31 + 8; break;
                        }

                        hw = &minfo->hw;

                        down_read(&minfo->altout.lock);
                        for (out = 0; out < MATROXFB_MAX_OUTPUTS; out++) {
                                if (minfo->outputs[out].src == MATROXFB_SRC_CRTC1 &&
                                    minfo->outputs[out].output->compute) {
                                        minfo->outputs[out].output->compute(minfo->outputs[out].data, &mt);
                                }
                        }
                        up_read(&minfo->altout.lock);
                        minfo->crtc1.pixclock = mt.pixclock;
                        minfo->crtc1.mnp = mt.mnp;
                        minfo->hw_switch->init(minfo, &mt);
                        pos = (var->yoffset * var->xres_virtual + var->xoffset) * minfo->curr.final_bppShift / 32;
                        pos += minfo->curr.ydstorg.chunks;

                        hw->CRTC[0x0D] = pos & 0xFF;
                        hw->CRTC[0x0C] = (pos & 0xFF00) >> 8;
                        hw->CRTCEXT[0] = (hw->CRTCEXT[0] & 0xF0) | ((pos >> 16) & 0x0F) | ((pos >> 14) & 0x40);
                        hw->CRTCEXT[8] = pos >> 21;
                        minfo->hw_switch->restore(minfo);
                        update_crtc2(minfo, pos);
                        down_read(&minfo->altout.lock);
                        for (out = 0; out < MATROXFB_MAX_OUTPUTS; out++) {
                                if (minfo->outputs[out].src == MATROXFB_SRC_CRTC1 &&
                                    minfo->outputs[out].output->program) {
                                        minfo->outputs[out].output->program(minfo->outputs[out].data);
                                }
                        }
                        for (out = 0; out < MATROXFB_MAX_OUTPUTS; out++) {
                                if (minfo->outputs[out].src == MATROXFB_SRC_CRTC1 &&
                                    minfo->outputs[out].output->start) {
                                        minfo->outputs[out].output->start(minfo->outputs[out].data);
                                }
                        }
                        up_read(&minfo->altout.lock);
                        matrox_cfbX_init(minfo);
                }
        }
        minfo->initialized = 1;
        return 0;
}

static int matroxfb_get_vblank(struct matrox_fb_info *minfo,
                               struct fb_vblank *vblank)
{
        unsigned int sts1;

        matroxfb_enable_irq(minfo, 0);
        memset(vblank, 0, sizeof(*vblank));
        vblank->flags = FB_VBLANK_HAVE_VCOUNT | FB_VBLANK_HAVE_VSYNC |
                        FB_VBLANK_HAVE_VBLANK | FB_VBLANK_HAVE_HBLANK;
        sts1 = mga_inb(M_INSTS1);
        vblank->vcount = mga_inl(M_VCOUNT);
        /* BTW, on my PIII/450 with G400, reading M_INSTS1
           byte makes this call about 12% slower (1.70 vs. 2.05 us
           per ioctl()) */
        if (sts1 & 1)
                vblank->flags |= FB_VBLANK_HBLANKING;
        if (sts1 & 8)
                vblank->flags |= FB_VBLANK_VSYNCING;
        if (vblank->vcount >= minfo->fbcon.var.yres)
                vblank->flags |= FB_VBLANK_VBLANKING;
        if (test_bit(0, &minfo->irq_flags)) {
                vblank->flags |= FB_VBLANK_HAVE_COUNT;
                /* Only one writer, aligned int value...
                   it should work without lock and without atomic_t */
                vblank->count = minfo->crtc1.vsync.cnt;
        }
        return 0;
}

static struct matrox_altout panellink_output = {
        .name    = "Panellink output",
};

static int matroxfb_ioctl(struct fb_info *info,
                          unsigned int cmd, unsigned long arg)
{
        void __user *argp = (void __user *)arg;
        struct matrox_fb_info *minfo = info2minfo(info);

        DBG(__func__)

        if (minfo->dead) {
                return -ENXIO;
        }

        switch (cmd) {
                case FBIOGET_VBLANK:
                        {
                                struct fb_vblank vblank;
                                int err;

                                err = matroxfb_get_vblank(minfo, &vblank);
                                if (err)
                                        return err;
                                if (copy_to_user(argp, &vblank, sizeof(vblank)))
                                        return -EFAULT;
                                return 0;
                        }
                case FBIO_WAITFORVSYNC:
                        {
                                u_int32_t crt;

                                if (get_user(crt, (u_int32_t __user *)arg))
                                        return -EFAULT;

                                return matroxfb_wait_for_sync(minfo, crt);
                        }
                case MATROXFB_SET_OUTPUT_MODE:
                        {
                                struct matroxioc_output_mode mom;
                                struct matrox_altout *oproc;
                                int val;

                                if (copy_from_user(&mom, argp, sizeof(mom)))
                                        return -EFAULT;
                                if (mom.output >= MATROXFB_MAX_OUTPUTS)
                                        return -ENXIO;
                                down_read(&minfo->altout.lock);
                                oproc = minfo->outputs[mom.output].output;
                                if (!oproc) {
                                        val = -ENXIO;
                                } else if (!oproc->verifymode) {
                                        if (mom.mode == MATROXFB_OUTPUT_MODE_MONITOR) {
                                                val = 0;
                                        } else {
                                                val = -EINVAL;
                                        }
                                } else {
                                        val = oproc->verifymode(minfo->outputs[mom.output].data, mom.mode);
                                }
                                if (!val) {
                                        if (minfo->outputs[mom.output].mode != mom.mode) {
                                                minfo->outputs[mom.output].mode = mom.mode;
                                                val = 1;
                                        }
                                }
                                up_read(&minfo->altout.lock);
                                if (val != 1)
                                        return val;
                                switch (minfo->outputs[mom.output].src) {
                                        case MATROXFB_SRC_CRTC1:
                                                matroxfb_set_par(info);
                                                break;
                                        case MATROXFB_SRC_CRTC2:
                                                {
                                                        struct matroxfb_dh_fb_info* crtc2;

                                                        down_read(&minfo->crtc2.lock);
                                                        crtc2 = minfo->crtc2.info;
                                                        if (crtc2)
                                                                crtc2->fbcon.fbops->fb_set_par(&crtc2->fbcon);
                                                        up_read(&minfo->crtc2.lock);
                                                }
                                                break;
                                }
                                return 0;
                        }
                case MATROXFB_GET_OUTPUT_MODE:
                        {
                                struct matroxioc_output_mode mom;
                                struct matrox_altout *oproc;
                                int val;

                                if (copy_from_user(&mom, argp, sizeof(mom)))
                                        return -EFAULT;
                                if (mom.output >= MATROXFB_MAX_OUTPUTS)
                                        return -ENXIO;
                                down_read(&minfo->altout.lock);
                                oproc = minfo->outputs[mom.output].output;
                                if (!oproc) {
                                        val = -ENXIO;
                                } else {
                                        mom.mode = minfo->outputs[mom.output].mode;
                                        val = 0;
                                }
                                up_read(&minfo->altout.lock);
                                if (val)
                                        return val;
                                if (copy_to_user(argp, &mom, sizeof(mom)))
                                        return -EFAULT;
                                return 0;
                        }
                case MATROXFB_SET_OUTPUT_CONNECTION:
                        {
                                u_int32_t tmp;
                                int i;
                                int changes;

                                if (copy_from_user(&tmp, argp, sizeof(tmp)))
                                        return -EFAULT;
                                for (i = 0; i < 32; i++) {
                                        if (tmp & (1 << i)) {
                                                if (i >= MATROXFB_MAX_OUTPUTS)
                                                        return -ENXIO;

                                                if (!minfo->outputs[i].output)
                                                        return -ENXIO;
                                                switch (minfo->outputs[i].src) {
                                                        case MATROXFB_SRC_NONE:
                                                        case MATROXFB_SRC_CRTC1:
                                                                break;
                                                        default:
                                                                return -EBUSY;
                                                }
                                        }
                                }
                                if (minfo->devflags.panellink) {
                                        if (tmp & MATROXFB_OUTPUT_CONN_DFP) {
                                                if (tmp & MATROXFB_OUTPUT_CONN_SECONDARY)
                                                        return -EINVAL;
                                                for (i = 0; i < MATROXFB_MAX_OUTPUTS; i++) {
                                                        if (minfo->outputs[i].src == MATROXFB_SRC_CRTC2) {
                                                                return -EBUSY;
                                                        }
                                                }
                                        }
                                }
                                changes = 0;
                                for (i = 0; i < MATROXFB_MAX_OUTPUTS; i++) {
                                        if (tmp & (1 << i)) {
                                                if (minfo->outputs[i].src != MATROXFB_SRC_CRTC1) {
                                                        changes = 1;
                                                        minfo->outputs[i].src = MATROXFB_SRC_CRTC1;
                                                }
                                        } else if (minfo->outputs[i].src == MATROXFB_SRC_CRTC1) {
                                                changes = 1;
                                                minfo->outputs[i].src = MATROXFB_SRC_NONE;
                                        }
                                }
                                if (!changes)
                                        return 0;
                                matroxfb_set_par(info);
                                return 0;
                        }
                case MATROXFB_GET_OUTPUT_CONNECTION:
                        {
                                u_int32_t conn = 0;
                                int i;

                                for (i = 0; i < MATROXFB_MAX_OUTPUTS; i++) {
                                        if (minfo->outputs[i].src == MATROXFB_SRC_CRTC1) {
                                                conn |= 1 << i;
                                        }
                                }
                                if (put_user(conn, (u_int32_t __user *)arg))
                                        return -EFAULT;
                                return 0;
                        }
                case MATROXFB_GET_AVAILABLE_OUTPUTS:
                        {
                                u_int32_t conn = 0;
                                int i;

                                for (i = 0; i < MATROXFB_MAX_OUTPUTS; i++) {
                                        if (minfo->outputs[i].output) {
                                                switch (minfo->outputs[i].src) {
                                                        case MATROXFB_SRC_NONE:
                                                        case MATROXFB_SRC_CRTC1:
                                                                conn |= 1 << i;
                                                                break;
                                                }
                                        }
                                }
                                if (minfo->devflags.panellink) {
                                        if (conn & MATROXFB_OUTPUT_CONN_DFP)
                                                conn &= ~MATROXFB_OUTPUT_CONN_SECONDARY;
                                        if (conn & MATROXFB_OUTPUT_CONN_SECONDARY)
                                                conn &= ~MATROXFB_OUTPUT_CONN_DFP;
                                }
                                if (put_user(conn, (u_int32_t __user *)arg))
                                        return -EFAULT;
                                return 0;
                        }
                case MATROXFB_GET_ALL_OUTPUTS:
                        {
                                u_int32_t conn = 0;
                                int i;

                                for (i = 0; i < MATROXFB_MAX_OUTPUTS; i++) {
                                        if (minfo->outputs[i].output) {
                                                conn |= 1 << i;
                                        }
                                }
                                if (put_user(conn, (u_int32_t __user *)arg))
                                        return -EFAULT;
                                return 0;
                        }
                case VIDIOC_QUERYCAP:
                        {
                                struct v4l2_capability r;

                                memset(&r, 0, sizeof(r));
                                strcpy(r.driver, "matroxfb");
                                strcpy(r.card, "Matrox");
                                sprintf(r.bus_info, "PCI:%s", pci_name(minfo->pcidev));
                                r.version = KERNEL_VERSION(1,0,0);
                                r.capabilities = V4L2_CAP_VIDEO_OUTPUT;
                                if (copy_to_user(argp, &r, sizeof(r)))
                                        return -EFAULT;
                                return 0;

                        }
                case VIDIOC_QUERYCTRL:
                        {
                                struct v4l2_queryctrl qctrl;
                                int err;

                                if (copy_from_user(&qctrl, argp, sizeof(qctrl)))
                                        return -EFAULT;

                                down_read(&minfo->altout.lock);
                                if (!minfo->outputs[1].output) {
                                        err = -ENXIO;
                                } else if (minfo->outputs[1].output->getqueryctrl) {
                                        err = minfo->outputs[1].output->getqueryctrl(minfo->outputs[1].data, &qctrl);
                                } else {
                                        err = -EINVAL;
                                }
                                up_read(&minfo->altout.lock);
                                if (err >= 0 &&
                                    copy_to_user(argp, &qctrl, sizeof(qctrl)))
                                        return -EFAULT;
                                return err;
                        }
                case VIDIOC_G_CTRL:
                        {
                                struct v4l2_control ctrl;
                                int err;

                                if (copy_from_user(&ctrl, argp, sizeof(ctrl)))
                                        return -EFAULT;

                                down_read(&minfo->altout.lock);
                                if (!minfo->outputs[1].output) {
                                        err = -ENXIO;
                                } else if (minfo->outputs[1].output->getctrl) {
                                        err = minfo->outputs[1].output->getctrl(minfo->outputs[1].data, &ctrl);
                                } else {
                                        err = -EINVAL;
                                }
                                up_read(&minfo->altout.lock);
                                if (err >= 0 &&
                                    copy_to_user(argp, &ctrl, sizeof(ctrl)))
                                        return -EFAULT;
                                return err;
                        }
                case VIDIOC_S_CTRL:
                        {
                                struct v4l2_control ctrl;
                                int err;

                                if (copy_from_user(&ctrl, argp, sizeof(ctrl)))
                                        return -EFAULT;

                                down_read(&minfo->altout.lock);
                                if (!minfo->outputs[1].output) {
                                        err = -ENXIO;
                                } else if (minfo->outputs[1].output->setctrl) {
                                        err = minfo->outputs[1].output->setctrl(minfo->outputs[1].data, &ctrl);
                                } else {
                                        err = -EINVAL;
                                }
                                up_read(&minfo->altout.lock);
                                return err;
                        }
        }
        return -ENOTTY;
}

/* 0 unblank, 1 blank, 2 no vsync, 3 no hsync, 4 off */

static int matroxfb_blank(int blank, struct fb_info *info)
{
        int seq;
        int crtc;
        CRITFLAGS
        struct matrox_fb_info *minfo = info2minfo(info);

        DBG(__func__)

        if (minfo->dead)
                return 1;

        switch (blank) {
        case FB_BLANK_NORMAL:  seq = 0x20; crtc = 0x00; break; /* works ??? */
        case FB_BLANK_VSYNC_SUSPEND:  seq = 0x20; crtc = 0x10; break;
        case FB_BLANK_HSYNC_SUSPEND:  seq = 0x20; crtc = 0x20; break;
        case FB_BLANK_POWERDOWN:  seq = 0x20; crtc = 0x30; break;
        default: seq = 0x00; crtc = 0x00; break;
        }

        CRITBEGIN

        mga_outb(M_SEQ_INDEX, 1);
        mga_outb(M_SEQ_DATA, (mga_inb(M_SEQ_DATA) & ~0x20) | seq);
        mga_outb(M_EXTVGA_INDEX, 1);
        mga_outb(M_EXTVGA_DATA, (mga_inb(M_EXTVGA_DATA) & ~0x30) | crtc);

        CRITEND
        return 0;
}

static struct fb_ops matroxfb_ops = {
        .owner =        THIS_MODULE,
        .fb_open =      matroxfb_open,
        .fb_release =   matroxfb_release,
        .fb_check_var = matroxfb_check_var,
        .fb_set_par =   matroxfb_set_par,
        .fb_setcolreg = matroxfb_setcolreg,
        .fb_pan_display =matroxfb_pan_display,
        .fb_blank =     matroxfb_blank,
        .fb_ioctl =     matroxfb_ioctl,
/*      .fb_fillrect =  <set by matrox_cfbX_init>, */
/*      .fb_copyarea =  <set by matrox_cfbX_init>, */
/*      .fb_imageblit = <set by matrox_cfbX_init>, */
/*      .fb_cursor =    <set by matrox_cfbX_init>, */
};

#define RSDepth(X)      (((X) >> 8) & 0x0F)
#define RS8bpp          0x1
#define RS15bpp         0x2
#define RS16bpp         0x3
#define RS32bpp         0x4
#define RS4bpp          0x5
#define RS24bpp         0x6
#define RSText          0x7
#define RSText8         0x8
/* 9-F */
static struct { struct fb_bitfield red, green, blue, transp; int bits_per_pixel; } colors[] = {
        { {  0, 8, 0}, { 0, 8, 0}, { 0, 8, 0}, {  0, 0, 0},  8 },
        { { 10, 5, 0}, { 5, 5, 0}, { 0, 5, 0}, { 15, 1, 0}, 16 },
        { { 11, 5, 0}, { 5, 6, 0}, { 0, 5, 0}, {  0, 0, 0}, 16 },
        { { 16, 8, 0}, { 8, 8, 0}, { 0, 8, 0}, { 24, 8, 0}, 32 },
        { {  0, 8, 0}, { 0, 8, 0}, { 0, 8, 0}, {  0, 0, 0},  4 },
        { { 16, 8, 0}, { 8, 8, 0}, { 0, 8, 0}, {  0, 0, 0}, 24 },
        { {  0, 6, 0}, { 0, 6, 0}, { 0, 6, 0}, {  0, 0, 0},  0 },       /* textmode with (default) VGA8x16 */
        { {  0, 6, 0}, { 0, 6, 0}, { 0, 6, 0}, {  0, 0, 0},  0 },       /* textmode hardwired to VGA8x8 */
};

/* initialized by setup, see explanation at end of file (search for MODULE_PARM_DESC) */
static unsigned int mem;                /* "matroxfb:mem:xxxxxM" */
static int option_precise_width = 1;    /* cannot be changed, option_precise_width==0 must imply noaccel */
static int inv24;                       /* "matroxfb:inv24" */
static int cross4MB = -1;               /* "matroxfb:cross4MB" */
static int disabled;                    /* "matroxfb:disabled" */
static int noaccel;                     /* "matroxfb:noaccel" */
static int nopan;                       /* "matroxfb:nopan" */
static int no_pci_retry;                /* "matroxfb:nopciretry" */
static int novga;                       /* "matroxfb:novga" */
static int nobios;                      /* "matroxfb:nobios" */
static int noinit = 1;                  /* "matroxfb:init" */
static int inverse;                     /* "matroxfb:inverse" */
static int sgram;                       /* "matroxfb:sgram" */
#ifdef CONFIG_MTRR
static int mtrr = 1;                    /* "matroxfb:nomtrr" */
#endif
static int grayscale;                   /* "matroxfb:grayscale" */
static int dev = -1;                    /* "matroxfb:dev:xxxxx" */
static unsigned int vesa = ~0;          /* "matroxfb:vesa:xxxxx" */
static int depth = -1;                  /* "matroxfb:depth:xxxxx" */
static unsigned int xres;               /* "matroxfb:xres:xxxxx" */
static unsigned int yres;               /* "matroxfb:yres:xxxxx" */
static unsigned int upper = ~0;         /* "matroxfb:upper:xxxxx" */
static unsigned int lower = ~0;         /* "matroxfb:lower:xxxxx" */
static unsigned int vslen;              /* "matroxfb:vslen:xxxxx" */
static unsigned int left = ~0;          /* "matroxfb:left:xxxxx" */
static unsigned int right = ~0;         /* "matroxfb:right:xxxxx" */
static unsigned int hslen;              /* "matroxfb:hslen:xxxxx" */
static unsigned int pixclock;           /* "matroxfb:pixclock:xxxxx" */
static int sync = -1;                   /* "matroxfb:sync:xxxxx" */
static unsigned int fv;                 /* "matroxfb:fv:xxxxx" */
static unsigned int fh;                 /* "matroxfb:fh:xxxxxk" */
static unsigned int maxclk;             /* "matroxfb:maxclk:xxxxM" */
static int dfp;                         /* "matroxfb:dfp */
static int dfp_type = -1;               /* "matroxfb:dfp:xxx */
static int memtype = -1;                /* "matroxfb:memtype:xxx" */
static char outputs[8];                 /* "matroxfb:outputs:xxx" */

#ifndef MODULE
static char videomode[64];              /* "matroxfb:mode:xxxxx" or "matroxfb:xxxxx" */
#endif

static int matroxfb_getmemory(struct matrox_fb_info *minfo,
                              unsigned int maxSize, unsigned int *realSize)
{
        vaddr_t vm;
        unsigned int offs;
        unsigned int offs2;
        unsigned char orig;
        unsigned char bytes[32];
        unsigned char* tmp;

        DBG(__func__)

        vm = minfo->video.vbase;
        maxSize &= ~0x1FFFFF;   /* must be X*2MB (really it must be 2 or X*4MB) */
        /* at least 2MB */
        if (maxSize < 0x0200000) return 0;
        if (maxSize > 0x2000000) maxSize = 0x2000000;

        mga_outb(M_EXTVGA_INDEX, 0x03);
        orig = mga_inb(M_EXTVGA_DATA);
        mga_outb(M_EXTVGA_DATA, orig | 0x80);

        tmp = bytes;
        for (offs = 0x100000; offs < maxSize; offs += 0x200000)
                *tmp++ = mga_readb(vm, offs);
        for (offs = 0x100000; offs < maxSize; offs += 0x200000)
                mga_writeb(vm, offs, 0x02);
        mga_outb(M_CACHEFLUSH, 0x00);
        for (offs = 0x100000; offs < maxSize; offs += 0x200000) {
                if (mga_readb(vm, offs) != 0x02)
                        break;
                mga_writeb(vm, offs, mga_readb(vm, offs) - 0x02);
                if (mga_readb(vm, offs))
                        break;
        }
        tmp = bytes;
        for (offs2 = 0x100000; offs2 < maxSize; offs2 += 0x200000)
                mga_writeb(vm, offs2, *tmp++);

        mga_outb(M_EXTVGA_INDEX, 0x03);
        mga_outb(M_EXTVGA_DATA, orig);

        *realSize = offs - 0x100000;
#ifdef CONFIG_FB_MATROX_MILLENIUM
        minfo->interleave = !(!isMillenium(minfo) || ((offs - 0x100000) & 0x3FFFFF));
#endif
        return 1;
}

struct video_board {
        int maxvram;
        int maxdisplayable;
        int accelID;
        struct matrox_switch* lowlevel;
                 };
#ifdef CONFIG_FB_MATROX_MILLENIUM
static struct video_board vbMillennium = {
        .maxvram = 0x0800000,
        .maxdisplayable = 0x0800000,
        .accelID = FB_ACCEL_MATROX_MGA2064W,
        .lowlevel = &matrox_millennium
};

static struct video_board vbMillennium2 = {
        .maxvram = 0x1000000,
        .maxdisplayable = 0x0800000,
        .accelID = FB_ACCEL_MATROX_MGA2164W,
        .lowlevel = &matrox_millennium
};

static struct video_board vbMillennium2A = {
        .maxvram = 0x1000000,
        .maxdisplayable = 0x0800000,
        .accelID = FB_ACCEL_MATROX_MGA2164W_AGP,
        .lowlevel = &matrox_millennium
};
#endif  /* CONFIG_FB_MATROX_MILLENIUM */
#ifdef CONFIG_FB_MATROX_MYSTIQUE
static struct video_board vbMystique = {
        .maxvram = 0x0800000,
        .maxdisplayable = 0x0800000,
        .accelID = FB_ACCEL_MATROX_MGA1064SG,
        .lowlevel = &matrox_mystique
};
#endif  /* CONFIG_FB_MATROX_MYSTIQUE */
#ifdef CONFIG_FB_MATROX_G
static struct video_board vbG100 = {
        .maxvram = 0x0800000,
        .maxdisplayable = 0x0800000,
        .accelID = FB_ACCEL_MATROX_MGAG100,
        .lowlevel = &matrox_G100
};

static struct video_board vbG200 = {
        .maxvram = 0x1000000,
        .maxdisplayable = 0x1000000,
        .accelID = FB_ACCEL_MATROX_MGAG200,
        .lowlevel = &matrox_G100
};
/* from doc it looks like that accelerator can draw only to low 16MB :-( Direct accesses & displaying are OK for
   whole 32MB */
static struct video_board vbG400 = {
        .maxvram = 0x2000000,
        .maxdisplayable = 0x1000000,
        .accelID = FB_ACCEL_MATROX_MGAG400,
        .lowlevel = &matrox_G100
};
#endif

#define DEVF_VIDEO64BIT         0x0001
#define DEVF_SWAPS              0x0002
#define DEVF_SRCORG             0x0004
#define DEVF_DUALHEAD           0x0008
#define DEVF_CROSS4MB           0x0010
#define DEVF_TEXT4B             0x0020
/* #define DEVF_recycled        0x0040  */
/* #define DEVF_recycled        0x0080  */
#define DEVF_SUPPORT32MB        0x0100
#define DEVF_ANY_VXRES          0x0200
#define DEVF_TEXT16B            0x0400
#define DEVF_CRTC2              0x0800
#define DEVF_MAVEN_CAPABLE      0x1000
#define DEVF_PANELLINK_CAPABLE  0x2000
#define DEVF_G450DAC            0x4000

#define DEVF_GCORE      (DEVF_VIDEO64BIT | DEVF_SWAPS | DEVF_CROSS4MB)
#define DEVF_G2CORE     (DEVF_GCORE | DEVF_ANY_VXRES | DEVF_MAVEN_CAPABLE | DEVF_PANELLINK_CAPABLE | DEVF_SRCORG | DEVF_DUALHEAD)
#define DEVF_G100       (DEVF_GCORE) /* no doc, no vxres... */
#define DEVF_G200       (DEVF_G2CORE)
#define DEVF_G400       (DEVF_G2CORE | DEVF_SUPPORT32MB | DEVF_TEXT16B | DEVF_CRTC2)
/* if you'll find how to drive DFP... */
#define DEVF_G450       (DEVF_GCORE | DEVF_ANY_VXRES | DEVF_SUPPORT32MB | DEVF_TEXT16B | DEVF_CRTC2 | DEVF_G450DAC | DEVF_SRCORG | DEVF_DUALHEAD)
#define DEVF_G550       (DEVF_G450)

static struct board {
        unsigned short vendor, device, rev, svid, sid;
        unsigned int flags;
        unsigned int maxclk;
        enum mga_chip chip;
        struct video_board* base;
        const char* name;
                } dev_list[] = {
#ifdef CONFIG_FB_MATROX_MILLENIUM
        {PCI_VENDOR_ID_MATROX,  PCI_DEVICE_ID_MATROX_MIL,       0xFF,
                0,                      0,
                DEVF_TEXT4B,
                230000,
                MGA_2064,
                &vbMillennium,
                "Millennium (PCI)"},
        {PCI_VENDOR_ID_MATROX,  PCI_DEVICE_ID_MATROX_MIL_2,     0xFF,
                0,                      0,
                DEVF_SWAPS,
                220000,
                MGA_2164,
                &vbMillennium2,
                "Millennium II (PCI)"},
        {PCI_VENDOR_ID_MATROX,  PCI_DEVICE_ID_MATROX_MIL_2_AGP, 0xFF,
                0,                      0,
                DEVF_SWAPS,
                250000,
                MGA_2164,
                &vbMillennium2A,
                "Millennium II (AGP)"},
#endif
#ifdef CONFIG_FB_MATROX_MYSTIQUE
        {PCI_VENDOR_ID_MATROX,  PCI_DEVICE_ID_MATROX_MYS,       0x02,
                0,                      0,
                DEVF_VIDEO64BIT | DEVF_CROSS4MB,
                180000,
                MGA_1064,
                &vbMystique,
                "Mystique (PCI)"},
        {PCI_VENDOR_ID_MATROX,  PCI_DEVICE_ID_MATROX_MYS,       0xFF,
                0,                      0,
                DEVF_VIDEO64BIT | DEVF_SWAPS | DEVF_CROSS4MB,
                220000,
                MGA_1164,
                &vbMystique,
                "Mystique 220 (PCI)"},
        {PCI_VENDOR_ID_MATROX,  PCI_DEVICE_ID_MATROX_MYS_AGP,   0x02,
                0,                      0,
                DEVF_VIDEO64BIT | DEVF_CROSS4MB,
                180000,
                MGA_1064,
                &vbMystique,
                "Mystique (AGP)"},
        {PCI_VENDOR_ID_MATROX,  PCI_DEVICE_ID_MATROX_MYS_AGP,   0xFF,
                0,                      0,
                DEVF_VIDEO64BIT | DEVF_SWAPS | DEVF_CROSS4MB,
                220000,
                MGA_1164,
                &vbMystique,
                "Mystique 220 (AGP)"},
#endif
#ifdef CONFIG_FB_MATROX_G
        {PCI_VENDOR_ID_MATROX,  PCI_DEVICE_ID_MATROX_G100_MM,   0xFF,
                0,                      0,
                DEVF_G100,
                230000,
                MGA_G100,
                &vbG100,
                "MGA-G100 (PCI)"},
        {PCI_VENDOR_ID_MATROX,  PCI_DEVICE_ID_MATROX_G100_AGP,  0xFF,
                0,                      0,
                DEVF_G100,
                230000,
                MGA_G100,
                &vbG100,
                "MGA-G100 (AGP)"},
        {PCI_VENDOR_ID_MATROX,  PCI_DEVICE_ID_MATROX_G200_PCI,  0xFF,
                0,                      0,
                DEVF_G200,
                250000,
                MGA_G200,
                &vbG200,
                "MGA-G200 (PCI)"},
        {PCI_VENDOR_ID_MATROX,  PCI_DEVICE_ID_MATROX_G200_AGP,  0xFF,
                PCI_SS_VENDOR_ID_MATROX,        PCI_SS_ID_MATROX_GENERIC,
                DEVF_G200,
                220000,
                MGA_G200,
                &vbG200,
                "MGA-G200 (AGP)"},
        {PCI_VENDOR_ID_MATROX,  PCI_DEVICE_ID_MATROX_G200_AGP,  0xFF,
                PCI_SS_VENDOR_ID_MATROX,        PCI_SS_ID_MATROX_MYSTIQUE_G200_AGP,
                DEVF_G200,
                230000,
                MGA_G200,
                &vbG200,
                "Mystique G200 (AGP)"},
        {PCI_VENDOR_ID_MATROX,  PCI_DEVICE_ID_MATROX_G200_AGP,  0xFF,
                PCI_SS_VENDOR_ID_MATROX,        PCI_SS_ID_MATROX_MILLENIUM_G200_AGP,
                DEVF_G200,
                250000,
                MGA_G200,
                &vbG200,
                "Millennium G200 (AGP)"},
        {PCI_VENDOR_ID_MATROX,  PCI_DEVICE_ID_MATROX_G200_AGP,  0xFF,
                PCI_SS_VENDOR_ID_MATROX,        PCI_SS_ID_MATROX_MARVEL_G200_AGP,
                DEVF_G200,
                230000,
                MGA_G200,
                &vbG200,
                "Marvel G200 (AGP)"},
        {PCI_VENDOR_ID_MATROX,  PCI_DEVICE_ID_MATROX_G200_AGP,  0xFF,
                PCI_SS_VENDOR_ID_SIEMENS_NIXDORF,       PCI_SS_ID_SIEMENS_MGA_G200_AGP,
                DEVF_G200,
                230000,
                MGA_G200,
                &vbG200,
                "MGA-G200 (AGP)"},
        {PCI_VENDOR_ID_MATROX,  PCI_DEVICE_ID_MATROX_G200_AGP,  0xFF,
                0,                      0,
                DEVF_G200,
                230000,
                MGA_G200,
                &vbG200,
                "G200 (AGP)"},
        {PCI_VENDOR_ID_MATROX,  PCI_DEVICE_ID_MATROX_G400,      0x80,
                PCI_SS_VENDOR_ID_MATROX,        PCI_SS_ID_MATROX_MILLENNIUM_G400_MAX_AGP,
                DEVF_G400,
                360000,
                MGA_G400,
                &vbG400,
                "Millennium G400 MAX (AGP)"},
        {PCI_VENDOR_ID_MATROX,  PCI_DEVICE_ID_MATROX_G400,      0x80,
                0,                      0,
                DEVF_G400,
                300000,
                MGA_G400,
                &vbG400,
                "G400 (AGP)"},
        {PCI_VENDOR_ID_MATROX,  PCI_DEVICE_ID_MATROX_G400,      0xFF,
                0,                      0,
                DEVF_G450,
                360000,
                MGA_G450,
                &vbG400,
                "G450"},
        {PCI_VENDOR_ID_MATROX,  PCI_DEVICE_ID_MATROX_G550,      0xFF,
                0,                      0,
                DEVF_G550,
                360000,
                MGA_G550,
                &vbG400,
                "G550"},
#endif
        {0,                     0,                              0xFF,
                0,                      0,
                0,
                0,
                0,
                NULL,
                NULL}};

#ifndef MODULE
static struct fb_videomode defaultmode = {
        /* 640x480 @ 60Hz, 31.5 kHz */
        NULL, 60, 640, 480, 39721, 40, 24, 32, 11, 96, 2,
        0, FB_VMODE_NONINTERLACED
};
#endif /* !MODULE */

static int hotplug = 0;

static void setDefaultOutputs(struct matrox_fb_info *minfo)
{
        unsigned int i;
        const char* ptr;

        minfo->outputs[0].default_src = MATROXFB_SRC_CRTC1;
        if (minfo->devflags.g450dac) {
                minfo->outputs[1].default_src = MATROXFB_SRC_CRTC1;
                minfo->outputs[2].default_src = MATROXFB_SRC_CRTC1;
        } else if (dfp) {
                minfo->outputs[2].default_src = MATROXFB_SRC_CRTC1;
        }
        ptr = outputs;
        for (i = 0; i < MATROXFB_MAX_OUTPUTS; i++) {
                char c = *ptr++;

                if (c == 0) {
                        break;
                }
                if (c == '0') {
                        minfo->outputs[i].default_src = MATROXFB_SRC_NONE;
                } else if (c == '1') {
                        minfo->outputs[i].default_src = MATROXFB_SRC_CRTC1;
                } else if (c == '2' && minfo->devflags.crtc2) {
                        minfo->outputs[i].default_src = MATROXFB_SRC_CRTC2;
                } else {
                        printk(KERN_ERR "matroxfb: Unknown outputs setting\n");
                        break;
                }
        }
        /* Nullify this option for subsequent adapters */
        outputs[0] = 0;
}

static int initMatrox2(struct matrox_fb_info *minfo, struct board *b)
{
        unsigned long ctrlptr_phys = 0;
        unsigned long video_base_phys = 0;
        unsigned int memsize;
        int err;

        static struct pci_device_id intel_82437[] = {
                { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437) },
                { },
        };

        DBG(__func__)

        /* set default values... */
        vesafb_defined.accel_flags = FB_ACCELF_TEXT;

        minfo->hw_switch = b->base->lowlevel;
        minfo->devflags.accelerator = b->base->accelID;
        minfo->max_pixel_clock = b->maxclk;

        printk(KERN_INFO "matroxfb: Matrox %s detected\n", b->name);
        minfo->capable.plnwt = 1;
        minfo->chip = b->chip;
        minfo->capable.srcorg = b->flags & DEVF_SRCORG;
        minfo->devflags.video64bits = b->flags & DEVF_VIDEO64BIT;
        if (b->flags & DEVF_TEXT4B) {
                minfo->devflags.vgastep = 4;
                minfo->devflags.textmode = 4;
                minfo->devflags.text_type_aux = FB_AUX_TEXT_MGA_STEP16;
        } else if (b->flags & DEVF_TEXT16B) {
                minfo->devflags.vgastep = 16;
                minfo->devflags.textmode = 1;
                minfo->devflags.text_type_aux = FB_AUX_TEXT_MGA_STEP16;
        } else {
                minfo->devflags.vgastep = 8;
                minfo->devflags.textmode = 1;
                minfo->devflags.text_type_aux = FB_AUX_TEXT_MGA_STEP8;
        }
        minfo->devflags.support32MB = (b->flags & DEVF_SUPPORT32MB) != 0;
        minfo->devflags.precise_width = !(b->flags & DEVF_ANY_VXRES);
        minfo->devflags.crtc2 = (b->flags & DEVF_CRTC2) != 0;
        minfo->devflags.maven_capable = (b->flags & DEVF_MAVEN_CAPABLE) != 0;
        minfo->devflags.dualhead = (b->flags & DEVF_DUALHEAD) != 0;
        minfo->devflags.dfp_type = dfp_type;
        minfo->devflags.g450dac = (b->flags & DEVF_G450DAC) != 0;
        minfo->devflags.textstep = minfo->devflags.vgastep * minfo->devflags.textmode;
        minfo->devflags.textvram = 65536 / minfo->devflags.textmode;
        setDefaultOutputs(minfo);
        if (b->flags & DEVF_PANELLINK_CAPABLE) {
                minfo->outputs[2].data = minfo;
                minfo->outputs[2].output = &panellink_output;
                minfo->outputs[2].src = minfo->outputs[2].default_src;
                minfo->outputs[2].mode = MATROXFB_OUTPUT_MODE_MONITOR;
                minfo->devflags.panellink = 1;
        }

        if (minfo->capable.cross4MB < 0)
                minfo->capable.cross4MB = b->flags & DEVF_CROSS4MB;
        if (b->flags & DEVF_SWAPS) {
                ctrlptr_phys = pci_resource_start(minfo->pcidev, 1);
                video_base_phys = pci_resource_start(minfo->pcidev, 0);
                minfo->devflags.fbResource = PCI_BASE_ADDRESS_0;
        } else {
                ctrlptr_phys = pci_resource_start(minfo->pcidev, 0);
                video_base_phys = pci_resource_start(minfo->pcidev, 1);
                minfo->devflags.fbResource = PCI_BASE_ADDRESS_1;
        }
        err = -EINVAL;
        if (!ctrlptr_phys) {
                printk(KERN_ERR "matroxfb: control registers are not available, matroxfb disabled\n");
                goto fail;
        }
        if (!video_base_phys) {
                printk(KERN_ERR "matroxfb: video RAM is not available in PCI address space, matroxfb disabled\n");
                goto fail;
        }
        memsize = b->base->maxvram;
        if (!request_mem_region(ctrlptr_phys, 16384, "matroxfb MMIO")) {
                goto fail;
        }
        if (!request_mem_region(video_base_phys, memsize, "matroxfb FB")) {
                goto failCtrlMR;
        }
        minfo->video.len_maximum = memsize;
        /* convert mem (autodetect k, M) */
        if (mem < 1024) mem *= 1024;
        if (mem < 0x00100000) mem *= 1024;

        if (mem && (mem < memsize))
                memsize = mem;
        err = -ENOMEM;
        if (mga_ioremap(ctrlptr_phys, 16384, MGA_IOREMAP_MMIO, &minfo->mmio.vbase)) {
                printk(KERN_ERR "matroxfb: cannot ioremap(%lX, 16384), matroxfb disabled\n", ctrlptr_phys);
                goto failVideoMR;
        }
        minfo->mmio.base = ctrlptr_phys;
        minfo->mmio.len = 16384;
        minfo->video.base = video_base_phys;
        if (mga_ioremap(video_base_phys, memsize, MGA_IOREMAP_FB, &minfo->video.vbase)) {
                printk(KERN_ERR "matroxfb: cannot ioremap(%lX, %d), matroxfb disabled\n",
                        video_base_phys, memsize);
                goto failCtrlIO;
        }
        {
                u_int32_t cmd;
                u_int32_t mga_option;

                pci_read_config_dword(minfo->pcidev, PCI_OPTION_REG, &mga_option);
                pci_read_config_dword(minfo->pcidev, PCI_COMMAND, &cmd);
                mga_option &= 0x7FFFFFFF; /* clear BIG_ENDIAN */
                mga_option |= MX_OPTION_BSWAP;
                /* disable palette snooping */
                cmd &= ~PCI_COMMAND_VGA_PALETTE;
                if (pci_dev_present(intel_82437)) {
                        if (!(mga_option & 0x20000000) && !minfo->devflags.nopciretry) {
                                printk(KERN_WARNING "matroxfb: Disabling PCI retries due to i82437 present\n");
                        }
                        mga_option |= 0x20000000;
                        minfo->devflags.nopciretry = 1;
                }
                pci_write_config_dword(minfo->pcidev, PCI_COMMAND, cmd);
                pci_write_config_dword(minfo->pcidev, PCI_OPTION_REG, mga_option);
                minfo->hw.MXoptionReg = mga_option;

                /* select non-DMA memory for PCI_MGA_DATA, otherwise dump of PCI cfg space can lock PCI bus */
                /* maybe preinit() candidate, but it is same... for all devices... at this time... */
                pci_write_config_dword(minfo->pcidev, PCI_MGA_INDEX, 0x00003C00);
        }

        err = -ENXIO;
        matroxfb_read_pins(minfo);
        if (minfo->hw_switch->preinit(minfo)) {
                goto failVideoIO;
        }

        err = -ENOMEM;
        if (!matroxfb_getmemory(minfo, memsize, &minfo->video.len) || !minfo->video.len) {
                printk(KERN_ERR "matroxfb: cannot determine memory size\n");
                goto failVideoIO;
        }
        minfo->devflags.ydstorg = 0;

        minfo->video.base = video_base_phys;
        minfo->video.len_usable = minfo->video.len;
        if (minfo->video.len_usable > b->base->maxdisplayable)
                minfo->video.len_usable = b->base->maxdisplayable;
#ifdef CONFIG_MTRR
        if (mtrr) {
                minfo->mtrr.vram = mtrr_add(video_base_phys, minfo->video.len, MTRR_TYPE_WRCOMB, 1);
                minfo->mtrr.vram_valid = 1;
                printk(KERN_INFO "matroxfb: MTRR's turned on\n");
        }
#endif  /* CONFIG_MTRR */

        if (!minfo->devflags.novga)
                request_region(0x3C0, 32, "matrox");
        matroxfb_g450_connect(minfo);
        minfo->hw_switch->reset(minfo);

        minfo->fbcon.monspecs.hfmin = 0;
        minfo->fbcon.monspecs.hfmax = fh;
        minfo->fbcon.monspecs.vfmin = 0;
        minfo->fbcon.monspecs.vfmax = fv;
        minfo->fbcon.monspecs.dpms = 0; /* TBD */

        /* static settings */
        vesafb_defined.red = colors[depth-1].red;
        vesafb_defined.green = colors[depth-1].green;
        vesafb_defined.blue = colors[depth-1].blue;
        vesafb_defined.bits_per_pixel = colors[depth-1].bits_per_pixel;
        vesafb_defined.grayscale = grayscale;
        vesafb_defined.vmode = 0;
        if (noaccel)
                vesafb_defined.accel_flags &= ~FB_ACCELF_TEXT;

        minfo->fbops = matroxfb_ops;
        minfo->fbcon.fbops = &minfo->fbops;
        minfo->fbcon.pseudo_palette = minfo->cmap;
        /* after __init time we are like module... no logo */
        minfo->fbcon.flags = hotplug ? FBINFO_FLAG_MODULE : FBINFO_FLAG_DEFAULT;
        minfo->fbcon.flags |= FBINFO_PARTIAL_PAN_OK |    /* Prefer panning for scroll under MC viewer/edit */
                                      FBINFO_HWACCEL_COPYAREA |  /* We have hw-assisted bmove */
                                      FBINFO_HWACCEL_FILLRECT |  /* And fillrect */
                                      FBINFO_HWACCEL_IMAGEBLIT | /* And imageblit */
                                      FBINFO_HWACCEL_XPAN |      /* And we support both horizontal */
                                      FBINFO_HWACCEL_YPAN |      /* And vertical panning */
                                      FBINFO_READS_FAST;
        minfo->video.len_usable &= PAGE_MASK;
        fb_alloc_cmap(&minfo->fbcon.cmap, 256, 1);

#ifndef MODULE
        /* mode database is marked __init!!! */
        if (!hotplug) {
                fb_find_mode(&vesafb_defined, &minfo->fbcon, videomode[0] ? videomode : NULL,
                        NULL, 0, &defaultmode, vesafb_defined.bits_per_pixel);
        }
#endif /* !MODULE */

        /* mode modifiers */
        if (hslen)
                vesafb_defined.hsync_len = hslen;
        if (vslen)
                vesafb_defined.vsync_len = vslen;
        if (left != ~0)
                vesafb_defined.left_margin = left;
        if (right != ~0)
                vesafb_defined.right_margin = right;
        if (upper != ~0)
                vesafb_defined.upper_margin = upper;
        if (lower != ~0)
                vesafb_defined.lower_margin = lower;
        if (xres)
                vesafb_defined.xres = xres;
        if (yres)
                vesafb_defined.yres = yres;
        if (sync != -1)
                vesafb_defined.sync = sync;
        else if (vesafb_defined.sync == ~0) {
                vesafb_defined.sync = 0;
                if (yres < 400)
                        vesafb_defined.sync |= FB_SYNC_HOR_HIGH_ACT;
                else if (yres < 480)
                        vesafb_defined.sync |= FB_SYNC_VERT_HIGH_ACT;
        }

        /* fv, fh, maxclk limits was specified */
        {
                unsigned int tmp;

                if (fv) {
                        tmp = fv * (vesafb_defined.upper_margin + vesafb_defined.yres
                                  + vesafb_defined.lower_margin + vesafb_defined.vsync_len);
                        if ((tmp < fh) || (fh == 0)) fh = tmp;
                }
                if (fh) {
                        tmp = fh * (vesafb_defined.left_margin + vesafb_defined.xres
                                  + vesafb_defined.right_margin + vesafb_defined.hsync_len);
                        if ((tmp < maxclk) || (maxclk == 0)) maxclk = tmp;
                }
                tmp = (maxclk + 499) / 500;
                if (tmp) {
                        tmp = (2000000000 + tmp) / tmp;
                        if (tmp > pixclock) pixclock = tmp;
                }
        }
        if (pixclock) {
                if (pixclock < 2000)            /* > 500MHz */
                        pixclock = 4000;        /* 250MHz */
                if (pixclock > 1000000)
                        pixclock = 1000000;     /* 1MHz */
                vesafb_defined.pixclock = pixclock;
        }

        /* FIXME: Where to move this?! */
#if defined(CONFIG_PPC_PMAC)
#ifndef MODULE
        if (machine_is(powermac)) {
                struct fb_var_screeninfo var;
                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.accel_flags = vesafb_defined.accel_flags;
                        var.xoffset = var.yoffset = 0;
                        /* Note: mac_vmode_to_var() does not set all parameters */
                        vesafb_defined = var;
                }
        }
#endif /* !MODULE */
#endif /* CONFIG_PPC_PMAC */
        vesafb_defined.xres_virtual = vesafb_defined.xres;
        if (nopan) {
                vesafb_defined.yres_virtual = vesafb_defined.yres;
        } else {
                vesafb_defined.yres_virtual = 65536; /* large enough to be INF, but small enough
                                                        to yres_virtual * xres_virtual < 2^32 */
        }
        matroxfb_init_fix(minfo);
        minfo->fbcon.screen_base = vaddr_va(minfo->video.vbase);
        /* Normalize values (namely yres_virtual) */
        matroxfb_check_var(&vesafb_defined, &minfo->fbcon);
        /* And put it into "current" var. Do NOT program hardware yet, or we'll not take over
         * vgacon correctly. fbcon_startup will call fb_set_par for us, WITHOUT check_var,
         * and unfortunately it will do it BEFORE vgacon contents is saved, so it won't work
         * anyway. But we at least tried... */
        minfo->fbcon.var = vesafb_defined;
        err = -EINVAL;

        printk(KERN_INFO "matroxfb: %dx%dx%dbpp (virtual: %dx%d)\n",
                vesafb_defined.xres, vesafb_defined.yres, vesafb_defined.bits_per_pixel,
                vesafb_defined.xres_virtual, vesafb_defined.yres_virtual);
        printk(KERN_INFO "matroxfb: framebuffer at 0x%lX, mapped to 0x%p, size %d\n",
                minfo->video.base, vaddr_va(minfo->video.vbase), minfo->video.len);

/* We do not have to set currcon to 0... register_framebuffer do it for us on first console
 * and we do not want currcon == 0 for subsequent framebuffers */

        minfo->fbcon.device = &minfo->pcidev->dev;
        if (register_framebuffer(&minfo->fbcon) < 0) {
                goto failVideoIO;
        }
        fb_info(&minfo->fbcon, "%s frame buffer device\n", minfo->fbcon.fix.id);

        /* there is no console on this fb... but we have to initialize hardware
         * until someone tells me what is proper thing to do */
        if (!minfo->initialized) {
                fb_info(&minfo->fbcon, "initializing hardware\n");
                /* We have to use FB_ACTIVATE_FORCE, as we had to put vesafb_defined to the fbcon.var
                 * already before, so register_framebuffer works correctly. */
                vesafb_defined.activate |= FB_ACTIVATE_FORCE;
                fb_set_var(&minfo->fbcon, &vesafb_defined);
        }

        return 0;
failVideoIO:;
        matroxfb_g450_shutdown(minfo);
        mga_iounmap(minfo->video.vbase);
failCtrlIO:;
        mga_iounmap(minfo->mmio.vbase);
failVideoMR:;
        release_mem_region(video_base_phys, minfo->video.len_maximum);
failCtrlMR:;
        release_mem_region(ctrlptr_phys, 16384);
fail:;
        return err;
}

static LIST_HEAD(matroxfb_list);
static LIST_HEAD(matroxfb_driver_list);

#define matroxfb_l(x) list_entry(x, struct matrox_fb_info, next_fb)
#define matroxfb_driver_l(x) list_entry(x, struct matroxfb_driver, node)
int matroxfb_register_driver(struct matroxfb_driver* drv) {
        struct matrox_fb_info* minfo;

        list_add(&drv->node, &matroxfb_driver_list);
        for (minfo = matroxfb_l(matroxfb_list.next);
             minfo != matroxfb_l(&matroxfb_list);
             minfo = matroxfb_l(minfo->next_fb.next)) {
                void* p;

                if (minfo->drivers_count == MATROXFB_MAX_FB_DRIVERS)
                        continue;
                p = drv->probe(minfo);
                if (p) {
                        minfo->drivers_data[minfo->drivers_count] = p;
                        minfo->drivers[minfo->drivers_count++] = drv;
                }
        }
        return 0;
}

void matroxfb_unregister_driver(struct matroxfb_driver* drv) {
        struct matrox_fb_info* minfo;

        list_del(&drv->node);
        for (minfo = matroxfb_l(matroxfb_list.next);
             minfo != matroxfb_l(&matroxfb_list);
             minfo = matroxfb_l(minfo->next_fb.next)) {
                int i;

                for (i = 0; i < minfo->drivers_count; ) {
                        if (minfo->drivers[i] == drv) {
                                if (drv && drv->remove)
                                        drv->remove(minfo, minfo->drivers_data[i]);
                                minfo->drivers[i] = minfo->drivers[--minfo->drivers_count];
                                minfo->drivers_data[i] = minfo->drivers_data[minfo->drivers_count];

                        } else
                                i++;
                }
        }
}

static void matroxfb_register_device(struct matrox_fb_info* minfo) {
        struct matroxfb_driver* drv;
        int i = 0;
        list_add(&minfo->next_fb, &matroxfb_list);
        for (drv = matroxfb_driver_l(matroxfb_driver_list.next);
             drv != matroxfb_driver_l(&matroxfb_driver_list);
             drv = matroxfb_driver_l(drv->node.next)) {
                if (drv && drv->probe) {
                        void *p = drv->probe(minfo);
                        if (p) {
                                minfo->drivers_data[i] = p;
                                minfo->drivers[i++] = drv;
                                if (i == MATROXFB_MAX_FB_DRIVERS)
                                        break;
                        }
                }
        }
        minfo->drivers_count = i;
}

static void matroxfb_unregister_device(struct matrox_fb_info* minfo) {
        int i;

        list_del(&minfo->next_fb);
        for (i = 0; i < minfo->drivers_count; i++) {
                struct matroxfb_driver* drv = minfo->drivers[i];

                if (drv && drv->remove)
                        drv->remove(minfo, minfo->drivers_data[i]);
        }
}

static int matroxfb_probe(struct pci_dev* pdev, const struct pci_device_id* dummy) {
        struct board* b;
        u_int16_t svid;
        u_int16_t sid;
        struct matrox_fb_info* minfo;
        int err;
        u_int32_t cmd;
        DBG(__func__)

        svid = pdev->subsystem_vendor;
        sid = pdev->subsystem_device;
        for (b = dev_list; b->vendor; b++) {
                if ((b->vendor != pdev->vendor) || (b->device != pdev->device) || (b->rev < pdev->revision)) continue;
                if (b->svid)
                        if ((b->svid != svid) || (b->sid != sid)) continue;
                break;
        }
        /* not match... */
        if (!b->vendor)
                return -ENODEV;
        if (dev > 0) {
                /* not requested one... */
                dev--;
                return -ENODEV;
        }
        pci_read_config_dword(pdev, PCI_COMMAND, &cmd);
        if (pci_enable_device(pdev)) {
                return -1;
        }

        minfo = kzalloc(sizeof(*minfo), GFP_KERNEL);
        if (!minfo)
                return -1;

        minfo->pcidev = pdev;
        minfo->dead = 0;
        minfo->usecount = 0;
        minfo->userusecount = 0;

        pci_set_drvdata(pdev, minfo);
        /* DEVFLAGS */
        minfo->devflags.memtype = memtype;
        if (memtype != -1)
                noinit = 0;
        if (cmd & PCI_COMMAND_MEMORY) {
                minfo->devflags.novga = novga;
                minfo->devflags.nobios = nobios;
                minfo->devflags.noinit = noinit;
                /* subsequent heads always needs initialization and must not enable BIOS */
                novga = 1;
                nobios = 1;
                noinit = 0;
        } else {
                minfo->devflags.novga = 1;
                minfo->devflags.nobios = 1;
                minfo->devflags.noinit = 0;
        }

        minfo->devflags.nopciretry = no_pci_retry;
        minfo->devflags.mga_24bpp_fix = inv24;
        minfo->devflags.precise_width = option_precise_width;
        minfo->devflags.sgram = sgram;
        minfo->capable.cross4MB = cross4MB;

        spin_lock_init(&minfo->lock.DAC);
        spin_lock_init(&minfo->lock.accel);
        init_rwsem(&minfo->crtc2.lock);
        init_rwsem(&minfo->altout.lock);
        mutex_init(&minfo->fbcon.mm_lock);
        minfo->irq_flags = 0;
        init_waitqueue_head(&minfo->crtc1.vsync.wait);
        init_waitqueue_head(&minfo->crtc2.vsync.wait);
        minfo->crtc1.panpos = -1;

        err = initMatrox2(minfo, b);
        if (!err) {
                matroxfb_register_device(minfo);
                return 0;
        }
        kfree(minfo);
        return -1;
}

static void pci_remove_matrox(struct pci_dev* pdev) {
        struct matrox_fb_info* minfo;

        minfo = pci_get_drvdata(pdev);
        matroxfb_remove(minfo, 1);
}

static struct pci_device_id matroxfb_devices[] = {
#ifdef CONFIG_FB_MATROX_MILLENIUM
        {PCI_VENDOR_ID_MATROX,  PCI_DEVICE_ID_MATROX_MIL,
                PCI_ANY_ID,     PCI_ANY_ID,     0, 0, 0},
        {PCI_VENDOR_ID_MATROX,  PCI_DEVICE_ID_MATROX_MIL_2,
                PCI_ANY_ID,     PCI_ANY_ID,     0, 0, 0},
        {PCI_VENDOR_ID_MATROX,  PCI_DEVICE_ID_MATROX_MIL_2_AGP,
                PCI_ANY_ID,     PCI_ANY_ID,     0, 0, 0},
#endif
#ifdef CONFIG_FB_MATROX_MYSTIQUE
        {PCI_VENDOR_ID_MATROX,  PCI_DEVICE_ID_MATROX_MYS,
                PCI_ANY_ID,     PCI_ANY_ID,     0, 0, 0},
#endif
#ifdef CONFIG_FB_MATROX_G
        {PCI_VENDOR_ID_MATROX,  PCI_DEVICE_ID_MATROX_G100_MM,
                PCI_ANY_ID,     PCI_ANY_ID,     0, 0, 0},
        {PCI_VENDOR_ID_MATROX,  PCI_DEVICE_ID_MATROX_G100_AGP,
                PCI_ANY_ID,     PCI_ANY_ID,     0, 0, 0},
        {PCI_VENDOR_ID_MATROX,  PCI_DEVICE_ID_MATROX_G200_PCI,
                PCI_ANY_ID,     PCI_ANY_ID,     0, 0, 0},
        {PCI_VENDOR_ID_MATROX,  PCI_DEVICE_ID_MATROX_G200_AGP,
                PCI_ANY_ID,     PCI_ANY_ID,     0, 0, 0},
        {PCI_VENDOR_ID_MATROX,  PCI_DEVICE_ID_MATROX_G400,
                PCI_ANY_ID,     PCI_ANY_ID,     0, 0, 0},
        {PCI_VENDOR_ID_MATROX,  PCI_DEVICE_ID_MATROX_G550,
                PCI_ANY_ID,     PCI_ANY_ID,     0, 0, 0},
#endif
        {0,                     0,
                0,              0,              0, 0, 0}
};

MODULE_DEVICE_TABLE(pci, matroxfb_devices);


static struct pci_driver matroxfb_driver = {
        .name =         "matroxfb",
        .id_table =     matroxfb_devices,
        .probe =        matroxfb_probe,
        .remove =       pci_remove_matrox,
};

/* **************************** init-time only **************************** */

#define RSResolution(X) ((X) & 0x0F)
#define RS640x400       1
#define RS640x480       2
#define RS800x600       3
#define RS1024x768      4
#define RS1280x1024     5
#define RS1600x1200     6
#define RS768x576       7
#define RS960x720       8
#define RS1152x864      9
#define RS1408x1056     10
#define RS640x350       11
#define RS1056x344      12      /* 132 x 43 text */
#define RS1056x400      13      /* 132 x 50 text */
#define RS1056x480      14      /* 132 x 60 text */
#define RSNoxNo         15
/* 10-FF */
static struct { int xres, yres, left, right, upper, lower, hslen, vslen, vfreq; } timmings[] __initdata = {
        {  640,  400,  48, 16, 39,  8,  96, 2, 70 },
        {  640,  480,  48, 16, 33, 10,  96, 2, 60 },
        {  800,  600, 144, 24, 28,  8, 112, 6, 60 },
        { 1024,  768, 160, 32, 30,  4, 128, 4, 60 },
        { 1280, 1024, 224, 32, 32,  4, 136, 4, 60 },
        { 1600, 1200, 272, 48, 32,  5, 152, 5, 60 },
        {  768,  576, 144, 16, 28,  6, 112, 4, 60 },
        {  960,  720, 144, 24, 28,  8, 112, 4, 60 },
        { 1152,  864, 192, 32, 30,  4, 128, 4, 60 },
        { 1408, 1056, 256, 40, 32,  5, 144, 5, 60 },
        {  640,  350,  48, 16, 39,  8,  96, 2, 70 },
        { 1056,  344,  96, 24, 59, 44, 160, 2, 70 },
        { 1056,  400,  96, 24, 39,  8, 160, 2, 70 },
        { 1056,  480,  96, 24, 36, 12, 160, 3, 60 },
        {    0,    0,  ~0, ~0, ~0, ~0,   0, 0,  0 }
};

#define RSCreate(X,Y)   ((X) | ((Y) << 8))
static struct { unsigned int vesa; unsigned int info; } *RSptr, vesamap[] __initdata = {
/* default must be first */
        {    ~0, RSCreate(RSNoxNo,     RS8bpp ) },
        { 0x101, RSCreate(RS640x480,   RS8bpp ) },
        { 0x100, RSCreate(RS640x400,   RS8bpp ) },
        { 0x180, RSCreate(RS768x576,   RS8bpp ) },
        { 0x103, RSCreate(RS800x600,   RS8bpp ) },
        { 0x188, RSCreate(RS960x720,   RS8bpp ) },
        { 0x105, RSCreate(RS1024x768,  RS8bpp ) },
        { 0x190, RSCreate(RS1152x864,  RS8bpp ) },
        { 0x107, RSCreate(RS1280x1024, RS8bpp ) },
        { 0x198, RSCreate(RS1408x1056, RS8bpp ) },
        { 0x11C, RSCreate(RS1600x1200, RS8bpp ) },
        { 0x110, RSCreate(RS640x480,   RS15bpp) },
        { 0x181, RSCreate(RS768x576,   RS15bpp) },
        { 0x113, RSCreate(RS800x600,   RS15bpp) },
        { 0x189, RSCreate(RS960x720,   RS15bpp) },
        { 0x116, RSCreate(RS1024x768,  RS15bpp) },
        { 0x191, RSCreate(RS1152x864,  RS15bpp) },
        { 0x119, RSCreate(RS1280x1024, RS15bpp) },
        { 0x199, RSCreate(RS1408x1056, RS15bpp) },
        { 0x11D, RSCreate(RS1600x1200, RS15bpp) },
        { 0x111, RSCreate(RS640x480,   RS16bpp) },
        { 0x182, RSCreate(RS768x576,   RS16bpp) },
        { 0x114, RSCreate(RS800x600,   RS16bpp) },
        { 0x18A, RSCreate(RS960x720,   RS16bpp) },
        { 0x117, RSCreate(RS1024x768,  RS16bpp) },
        { 0x192, RSCreate(RS1152x864,  RS16bpp) },
        { 0x11A, RSCreate(RS1280x1024, RS16bpp) },
        { 0x19A, RSCreate(RS1408x1056, RS16bpp) },
        { 0x11E, RSCreate(RS1600x1200, RS16bpp) },
        { 0x1B2, RSCreate(RS640x480,   RS24bpp) },
        { 0x184, RSCreate(RS768x576,   RS24bpp) },
        { 0x1B5, RSCreate(RS800x600,   RS24bpp) },
        { 0x18C, RSCreate(RS960x720,   RS24bpp) },
        { 0x1B8, RSCreate(RS1024x768,  RS24bpp) },
        { 0x194, RSCreate(RS1152x864,  RS24bpp) },
        { 0x1BB, RSCreate(RS1280x1024, RS24bpp) },
        { 0x19C, RSCreate(RS1408x1056, RS24bpp) },
        { 0x1BF, RSCreate(RS1600x1200, RS24bpp) },
        { 0x112, RSCreate(RS640x480,   RS32bpp) },
        { 0x183, RSCreate(RS768x576,   RS32bpp) },
        { 0x115, RSCreate(RS800x600,   RS32bpp) },
        { 0x18B, RSCreate(RS960x720,   RS32bpp) },
        { 0x118, RSCreate(RS1024x768,  RS32bpp) },
        { 0x193, RSCreate(RS1152x864,  RS32bpp) },
        { 0x11B, RSCreate(RS1280x1024, RS32bpp) },
        { 0x19B, RSCreate(RS1408x1056, RS32bpp) },
        { 0x11F, RSCreate(RS1600x1200, RS32bpp) },
        { 0x010, RSCreate(RS640x350,   RS4bpp ) },
        { 0x012, RSCreate(RS640x480,   RS4bpp ) },
        { 0x102, RSCreate(RS800x600,   RS4bpp ) },
        { 0x104, RSCreate(RS1024x768,  RS4bpp ) },
        { 0x106, RSCreate(RS1280x1024, RS4bpp ) },
        {     0, 0                              }};

static void __init matroxfb_init_params(void) {
        /* fh from kHz to Hz */
        if (fh < 1000)
                fh *= 1000;     /* 1kHz minimum */
        /* maxclk */
        if (maxclk < 1000) maxclk *= 1000;      /* kHz -> Hz, MHz -> kHz */
        if (maxclk < 1000000) maxclk *= 1000;   /* kHz -> Hz, 1MHz minimum */
        /* fix VESA number */
        if (vesa != ~0)
                vesa &= 0x1DFF;         /* mask out clearscreen, acceleration and so on */

        /* static settings */
        for (RSptr = vesamap; RSptr->vesa; RSptr++) {
                if (RSptr->vesa == vesa) break;
        }
        if (!RSptr->vesa) {
                printk(KERN_ERR "Invalid vesa mode 0x%04X\n", vesa);
                RSptr = vesamap;
        }
        {
                int res = RSResolution(RSptr->info)-1;
                if (left == ~0)
                        left = timmings[res].left;
                if (!xres)
                        xres = timmings[res].xres;
                if (right == ~0)
                        right = timmings[res].right;
                if (!hslen)
                        hslen = timmings[res].hslen;
                if (upper == ~0)
                        upper = timmings[res].upper;
                if (!yres)
                        yres = timmings[res].yres;
                if (lower == ~0)
                        lower = timmings[res].lower;
                if (!vslen)
                        vslen = timmings[res].vslen;
                if (!(fv||fh||maxclk||pixclock))
                        fv = timmings[res].vfreq;
                if (depth == -1)
                        depth = RSDepth(RSptr->info);
        }
}

static int __init matrox_init(void) {
        int err;

        matroxfb_init_params();
        err = pci_register_driver(&matroxfb_driver);
        dev = -1;       /* accept all new devices... */
        return err;
}

/* **************************** exit-time only **************************** */

static void __exit matrox_done(void) {
        pci_unregister_driver(&matroxfb_driver);
}

#ifndef MODULE

/* ************************* init in-kernel code ************************** */

static int __init matroxfb_setup(char *options) {
        char *this_opt;

        DBG(__func__)

        if (!options || !*options)
                return 0;

        while ((this_opt = strsep(&options, ",")) != NULL) {
                if (!*this_opt) continue;

                dprintk("matroxfb_setup: option %s\n", this_opt);

                if (!strncmp(this_opt, "dev:", 4))
                        dev = simple_strtoul(this_opt+4, NULL, 0);
                else if (!strncmp(this_opt, "depth:", 6)) {
                        switch (simple_strtoul(this_opt+6, NULL, 0)) {
                                case 0: depth = RSText; break;
                                case 4: depth = RS4bpp; break;
                                case 8: depth = RS8bpp; break;
                                case 15:depth = RS15bpp; break;
                                case 16:depth = RS16bpp; break;
                                case 24:depth = RS24bpp; break;
                                case 32:depth = RS32bpp; break;
                                default:
                                        printk(KERN_ERR "matroxfb: unsupported color depth\n");
                        }
                } else if (!strncmp(this_opt, "xres:", 5))
                        xres = simple_strtoul(this_opt+5, NULL, 0);
                else if (!strncmp(this_opt, "yres:", 5))
                        yres = simple_strtoul(this_opt+5, NULL, 0);
                else if (!strncmp(this_opt, "vslen:", 6))
                        vslen = simple_strtoul(this_opt+6, NULL, 0);
                else if (!strncmp(this_opt, "hslen:", 6))
                        hslen = simple_strtoul(this_opt+6, NULL, 0);
                else if (!strncmp(this_opt, "left:", 5))
                        left = simple_strtoul(this_opt+5, NULL, 0);
                else if (!strncmp(this_opt, "right:", 6))
                        right = simple_strtoul(this_opt+6, NULL, 0);
                else if (!strncmp(this_opt, "upper:", 6))
                        upper = simple_strtoul(this_opt+6, NULL, 0);
                else if (!strncmp(this_opt, "lower:", 6))
                        lower = simple_strtoul(this_opt+6, NULL, 0);
                else if (!strncmp(this_opt, "pixclock:", 9))
                        pixclock = simple_strtoul(this_opt+9, NULL, 0);
                else if (!strncmp(this_opt, "sync:", 5))
                        sync = simple_strtoul(this_opt+5, NULL, 0);
                else if (!strncmp(this_opt, "vesa:", 5))
                        vesa = simple_strtoul(this_opt+5, NULL, 0);
                else if (!strncmp(this_opt, "maxclk:", 7))
                        maxclk = simple_strtoul(this_opt+7, NULL, 0);
                else if (!strncmp(this_opt, "fh:", 3))
                        fh = simple_strtoul(this_opt+3, NULL, 0);
                else if (!strncmp(this_opt, "fv:", 3))
                        fv = simple_strtoul(this_opt+3, NULL, 0);
                else if (!strncmp(this_opt, "mem:", 4))
                        mem = simple_strtoul(this_opt+4, NULL, 0);
                else if (!strncmp(this_opt, "mode:", 5))
                        strlcpy(videomode, this_opt+5, sizeof(videomode));
                else if (!strncmp(this_opt, "outputs:", 8))
                        strlcpy(outputs, this_opt+8, sizeof(outputs));
                else if (!strncmp(this_opt, "dfp:", 4)) {
                        dfp_type = simple_strtoul(this_opt+4, NULL, 0);
                        dfp = 1;
                }
#ifdef CONFIG_PPC_PMAC
                else if (!strncmp(this_opt, "vmode:", 6)) {
                        unsigned int vmode = simple_strtoul(this_opt+6, NULL, 0);
                        if (vmode > 0 && vmode <= VMODE_MAX)
                                default_vmode = vmode;
                } else if (!strncmp(this_opt, "cmode:", 6)) {
                        unsigned int cmode = simple_strtoul(this_opt+6, NULL, 0);
                        switch (cmode) {
                                case 0:
                                case 8:
                                        default_cmode = CMODE_8;
                                        break;
                                case 15:
                                case 16:
                                        default_cmode = CMODE_16;
                                        break;
                                case 24:
                                case 32:
                                        default_cmode = CMODE_32;
                                        break;
                        }
                }
#endif
                else if (!strcmp(this_opt, "disabled")) /* nodisabled does not exist */
                        disabled = 1;
                else if (!strcmp(this_opt, "enabled"))  /* noenabled does not exist */
                        disabled = 0;
                else if (!strcmp(this_opt, "sgram"))    /* nosgram == sdram */
                        sgram = 1;
                else if (!strcmp(this_opt, "sdram"))
                        sgram = 0;
                else if (!strncmp(this_opt, "memtype:", 8))
                        memtype = simple_strtoul(this_opt+8, NULL, 0);
                else {
                        int value = 1;

                        if (!strncmp(this_opt, "no", 2)) {
                                value = 0;
                                this_opt += 2;
                        }
                        if (! strcmp(this_opt, "inverse"))
                                inverse = value;
                        else if (!strcmp(this_opt, "accel"))
                                noaccel = !value;
                        else if (!strcmp(this_opt, "pan"))
                                nopan = !value;
                        else if (!strcmp(this_opt, "pciretry"))
                                no_pci_retry = !value;
                        else if (!strcmp(this_opt, "vga"))
                                novga = !value;
                        else if (!strcmp(this_opt, "bios"))
                                nobios = !value;
                        else if (!strcmp(this_opt, "init"))
                                noinit = !value;
#ifdef CONFIG_MTRR
                        else if (!strcmp(this_opt, "mtrr"))
                                mtrr = value;
#endif
                        else if (!strcmp(this_opt, "inv24"))
                                inv24 = value;
                        else if (!strcmp(this_opt, "cross4MB"))
                                cross4MB = value;
                        else if (!strcmp(this_opt, "grayscale"))
                                grayscale = value;
                        else if (!strcmp(this_opt, "dfp"))
                                dfp = value;
                        else {
                                strlcpy(videomode, this_opt, sizeof(videomode));
                        }
                }
        }
        return 0;
}

static int __initdata initialized = 0;

static int __init matroxfb_init(void)
{
        char *option = NULL;
        int err = 0;

        DBG(__func__)

        if (fb_get_options("matroxfb", &option))
                return -ENODEV;
        matroxfb_setup(option);

        if (disabled)
                return -ENXIO;
        if (!initialized) {
                initialized = 1;
                err = matrox_init();
        }
        hotplug = 1;
        /* never return failure, user can hotplug matrox later... */
        return err;
}

module_init(matroxfb_init);

#else

/* *************************** init module code **************************** */

MODULE_AUTHOR("(c) 1998-2002 Petr Vandrovec <vandrove@vc.cvut.cz>");
MODULE_DESCRIPTION("Accelerated FBDev driver for Matrox Millennium/Mystique/G100/G200/G400/G450/G550");
MODULE_LICENSE("GPL");

module_param(mem, int, 0);
MODULE_PARM_DESC(mem, "Size of available memory in MB, KB or B (2,4,8,12,16MB, default=autodetect)");
module_param(disabled, int, 0);
MODULE_PARM_DESC(disabled, "Disabled (0 or 1=disabled) (default=0)");
module_param(noaccel, int, 0);
MODULE_PARM_DESC(noaccel, "Do not use accelerating engine (0 or 1=disabled) (default=0)");
module_param(nopan, int, 0);
MODULE_PARM_DESC(nopan, "Disable pan on startup (0 or 1=disabled) (default=0)");
module_param(no_pci_retry, int, 0);
MODULE_PARM_DESC(no_pci_retry, "PCI retries enabled (0 or 1=disabled) (default=0)");
module_param(novga, int, 0);
MODULE_PARM_DESC(novga, "VGA I/O (0x3C0-0x3DF) disabled (0 or 1=disabled) (default=0)");
module_param(nobios, int, 0);
MODULE_PARM_DESC(nobios, "Disables ROM BIOS (0 or 1=disabled) (default=do not change BIOS state)");
module_param(noinit, int, 0);
MODULE_PARM_DESC(noinit, "Disables W/SG/SD-RAM and bus interface initialization (0 or 1=do not initialize) (default=0)");
module_param(memtype, int, 0);
MODULE_PARM_DESC(memtype, "Memory type for G200/G400 (see Documentation/fb/matroxfb.txt for explanation) (default=3 for G200, 0 for G400)");
#ifdef CONFIG_MTRR
module_param(mtrr, int, 0);
MODULE_PARM_DESC(mtrr, "This speeds up video memory accesses (0=disabled or 1) (default=1)");
#endif
module_param(sgram, int, 0);
MODULE_PARM_DESC(sgram, "Indicates that G100/G200/G400 has SGRAM memory (0=SDRAM, 1=SGRAM) (default=0)");
module_param(inv24, int, 0);
MODULE_PARM_DESC(inv24, "Inverts clock polarity for 24bpp and loop frequency > 100MHz (default=do not invert polarity)");
module_param(inverse, int, 0);
MODULE_PARM_DESC(inverse, "Inverse (0 or 1) (default=0)");
module_param(dev, int, 0);
MODULE_PARM_DESC(dev, "Multihead support, attach to device ID (0..N) (default=all working)");
module_param(vesa, int, 0);
MODULE_PARM_DESC(vesa, "Startup videomode (0x000-0x1FF) (default=0x101)");
module_param(xres, int, 0);
MODULE_PARM_DESC(xres, "Horizontal resolution (px), overrides xres from vesa (default=vesa)");
module_param(yres, int, 0);
MODULE_PARM_DESC(yres, "Vertical resolution (scans), overrides yres from vesa (default=vesa)");
module_param(upper, int, 0);
MODULE_PARM_DESC(upper, "Upper blank space (scans), overrides upper from vesa (default=vesa)");
module_param(lower, int, 0);
MODULE_PARM_DESC(lower, "Lower blank space (scans), overrides lower from vesa (default=vesa)");
module_param(vslen, int, 0);
MODULE_PARM_DESC(vslen, "Vertical sync length (scans), overrides lower from vesa (default=vesa)");
module_param(left, int, 0);
MODULE_PARM_DESC(left, "Left blank space (px), overrides left from vesa (default=vesa)");
module_param(right, int, 0);
MODULE_PARM_DESC(right, "Right blank space (px), overrides right from vesa (default=vesa)");
module_param(hslen, int, 0);
MODULE_PARM_DESC(hslen, "Horizontal sync length (px), overrides hslen from vesa (default=vesa)");
module_param(pixclock, int, 0);
MODULE_PARM_DESC(pixclock, "Pixelclock (ns), overrides pixclock from vesa (default=vesa)");
module_param(sync, int, 0);
MODULE_PARM_DESC(sync, "Sync polarity, overrides sync from vesa (default=vesa)");
module_param(depth, int, 0);
MODULE_PARM_DESC(depth, "Color depth (0=text,8,15,16,24,32) (default=vesa)");
module_param(maxclk, int, 0);
MODULE_PARM_DESC(maxclk, "Startup maximal clock, 0-999MHz, 1000-999999kHz, 1000000-INF Hz");
module_param(fh, int, 0);
MODULE_PARM_DESC(fh, "Startup horizontal frequency, 0-999kHz, 1000-INF Hz");
module_param(fv, int, 0);
MODULE_PARM_DESC(fv, "Startup vertical frequency, 0-INF Hz\n"
"You should specify \"fv:max_monitor_vsync,fh:max_monitor_hsync,maxclk:max_monitor_dotclock\"");
module_param(grayscale, int, 0);
MODULE_PARM_DESC(grayscale, "Sets display into grayscale. Works perfectly with paletized videomode (4, 8bpp), some limitations apply to 16, 24 and 32bpp videomodes (default=nograyscale)");
module_param(cross4MB, int, 0);
MODULE_PARM_DESC(cross4MB, "Specifies that 4MB boundary can be in middle of line. (default=autodetected)");
module_param(dfp, int, 0);
MODULE_PARM_DESC(dfp, "Specifies whether to use digital flat panel interface of G200/G400 (0 or 1) (default=0)");
module_param(dfp_type, int, 0);
MODULE_PARM_DESC(dfp_type, "Specifies DFP interface type (0 to 255) (default=read from hardware)");
module_param_string(outputs, outputs, sizeof(outputs), 0);
MODULE_PARM_DESC(outputs, "Specifies which CRTC is mapped to which output (string of up to three letters, consisting of 0 (disabled), 1 (CRTC1), 2 (CRTC2)) (default=111 for Gx50, 101 for G200/G400 with DFP, and 100 for all other devices)");
#ifdef CONFIG_PPC_PMAC
module_param_named(vmode, default_vmode, int, 0);
MODULE_PARM_DESC(vmode, "Specify the vmode mode number that should be used (640x480 default)");
module_param_named(cmode, default_cmode, int, 0);
MODULE_PARM_DESC(cmode, "Specify the video depth that should be used (8bit default)");
#endif

int __init init_module(void){

        DBG(__func__)

        if (disabled)
                return -ENXIO;

        if (depth == 0)
                depth = RSText;
        else if (depth == 4)
                depth = RS4bpp;
        else if (depth == 8)
                depth = RS8bpp;
        else if (depth == 15)
                depth = RS15bpp;
        else if (depth == 16)
                depth = RS16bpp;
        else if (depth == 24)
                depth = RS24bpp;
        else if (depth == 32)
                depth = RS32bpp;
        else if (depth != -1) {
                printk(KERN_ERR "matroxfb: depth %d is not supported, using default\n", depth);
                depth = -1;
        }
        matrox_init();
        /* never return failure; user can hotplug matrox later... */
        return 0;
}
#endif  /* MODULE */

module_exit(matrox_done);
EXPORT_SYMBOL(matroxfb_register_driver);
EXPORT_SYMBOL(matroxfb_unregister_driver);
EXPORT_SYMBOL(matroxfb_wait_for_sync);
EXPORT_SYMBOL(matroxfb_enable_irq);

/*
 * Overrides for Emacs so that we follow Linus's tabbing style.
 * ---------------------------------------------------------------------------
 * Local variables:
 * c-basic-offset: 8
 * End:
 */