/***************************************************************************\
|*                                                                           *|
|*       Copyright 1993-2003 NVIDIA, Corporation.  All rights reserved.      *|
|*                                                                           *|
|*     NOTICE TO USER:   The source code  is copyrighted under  U.S. and     *|
|*     international laws.  Users and possessors of this source code are     *|
|*     hereby granted a nonexclusive,  royalty-free copyright license to     *|
|*     use this code in individual and commercial software.                  *|
|*                                                                           *|
|*     Any use of this source code must include,  in the user documenta-     *|
|*     tion and  internal comments to the code,  notices to the end user     *|
|*     as follows:                                                           *|
|*                                                                           *|
|*       Copyright 1993-2003 NVIDIA, Corporation.  All rights reserved.      *|
|*                                                                           *|
|*     NVIDIA, CORPORATION MAKES NO REPRESENTATION ABOUT THE SUITABILITY     *|
|*     OF  THIS SOURCE  CODE  FOR ANY PURPOSE.  IT IS  PROVIDED  "AS IS"     *|
|*     WITHOUT EXPRESS OR IMPLIED WARRANTY OF ANY KIND.  NVIDIA, CORPOR-     *|
|*     ATION DISCLAIMS ALL WARRANTIES  WITH REGARD  TO THIS SOURCE CODE,     *|
|*     INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGE-     *|
|*     MENT,  AND FITNESS  FOR A PARTICULAR PURPOSE.   IN NO EVENT SHALL     *|
|*     NVIDIA, CORPORATION  BE LIABLE FOR ANY SPECIAL,  INDIRECT,  INCI-     *|
|*     DENTAL, OR CONSEQUENTIAL DAMAGES,  OR ANY DAMAGES  WHATSOEVER RE-     *|
|*     SULTING FROM LOSS OF USE,  DATA OR PROFITS,  WHETHER IN AN ACTION     *|
|*     OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,  ARISING OUT OF     *|
|*     OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOURCE CODE.     *|
|*                                                                           *|
|*     U.S. Government  End  Users.   This source code  is a "commercial     *|
|*     item,"  as that  term is  defined at  48 C.F.R. 2.101 (OCT 1995),     *|
|*     consisting  of "commercial  computer  software"  and  "commercial     *|
|*     computer  software  documentation,"  as such  terms  are  used in     *|
|*     48 C.F.R. 12.212 (SEPT 1995)  and is provided to the U.S. Govern-     *|
|*     ment only as  a commercial end item.   Consistent with  48 C.F.R.     *|
|*     12.212 and  48 C.F.R. 227.7202-1 through  227.7202-4 (JUNE 1995),     *|
|*     all U.S. Government End Users  acquire the source code  with only     *|
|*     those rights set forth herein.                                        *|
|*                                                                           *|
 \***************************************************************************/

/*
 * GPL Licensing Note - According to Mark Vojkovich, author of the Xorg/
 * XFree86 'nv' driver, this source code is provided under MIT-style licensing
 * where the source code is provided "as is" without warranty of any kind.
 * The only usage restriction is for the copyright notices to be retained
 * whenever code is used.
 *
 * Antonino Daplas <adaplas@pol.net> 2005-03-11
 */

/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/nv/nv_hw.c,v 1.4 2003/11/03 05:11:25 tsi Exp $ */

#include <linux/pci.h>
#include "nv_type.h"
#include "nv_local.h"
#include "nv_proto.h"

void NVLockUnlock(struct nvidia_par *par, int Lock)
{
        u8 cr11;

        VGA_WR08(par->PCIO, 0x3D4, 0x1F);
        VGA_WR08(par->PCIO, 0x3D5, Lock ? 0x99 : 0x57);

        VGA_WR08(par->PCIO, 0x3D4, 0x11);
        cr11 = VGA_RD08(par->PCIO, 0x3D5);
        if (Lock)
                cr11 |= 0x80;
        else
                cr11 &= ~0x80;
        VGA_WR08(par->PCIO, 0x3D5, cr11);
}

int NVShowHideCursor(struct nvidia_par *par, int ShowHide)
{
        int cur = par->CurrentState->cursor1;

        par->CurrentState->cursor1 = (par->CurrentState->cursor1 & 0xFE) |
            (ShowHide & 0x01);
        VGA_WR08(par->PCIO, 0x3D4, 0x31);
        VGA_WR08(par->PCIO, 0x3D5, par->CurrentState->cursor1);

        if (par->Architecture == NV_ARCH_40)
                NV_WR32(par->PRAMDAC, 0x0300, NV_RD32(par->PRAMDAC, 0x0300));

        return (cur & 0x01);
}

/****************************************************************************\
*                                                                            *
* The video arbitration routines calculate some "magic" numbers.  Fixes      *
* the snow seen when accessing the framebuffer without it.                   *
* It just works (I hope).                                                    *
*                                                                            *
\****************************************************************************/

typedef struct {
        int graphics_lwm;
        int video_lwm;
        int graphics_burst_size;
        int video_burst_size;
        int valid;
} nv4_fifo_info;

typedef struct {
        int pclk_khz;
        int mclk_khz;
        int nvclk_khz;
        char mem_page_miss;
        char mem_latency;
        int memory_width;
        char enable_video;
        char gr_during_vid;
        char pix_bpp;
        char mem_aligned;
        char enable_mp;
} nv4_sim_state;

typedef struct {
        int graphics_lwm;
        int video_lwm;
        int graphics_burst_size;
        int video_burst_size;
        int valid;
} nv10_fifo_info;

typedef struct {
        int pclk_khz;
        int mclk_khz;
        int nvclk_khz;
        char mem_page_miss;
        char mem_latency;
        u32 memory_type;
        int memory_width;
        char enable_video;
        char gr_during_vid;
        char pix_bpp;
        char mem_aligned;
        char enable_mp;
} nv10_sim_state;

static void nvGetClocks(struct nvidia_par *par, unsigned int *MClk,
                        unsigned int *NVClk)
{
        unsigned int pll, N, M, MB, NB, P;

        if (par->Architecture >= NV_ARCH_40) {
                pll = NV_RD32(par->PMC, 0x4020);
                P = (pll >> 16) & 0x07;
                pll = NV_RD32(par->PMC, 0x4024);
                M = pll & 0xFF;
                N = (pll >> 8) & 0xFF;
                if (((par->Chipset & 0xfff0) == 0x0290) ||
                    ((par->Chipset & 0xfff0) == 0x0390)) {
                        MB = 1;
                        NB = 1;
                } else {
                        MB = (pll >> 16) & 0xFF;
                        NB = (pll >> 24) & 0xFF;
                }
                *MClk = ((N * NB * par->CrystalFreqKHz) / (M * MB)) >> P;

                pll = NV_RD32(par->PMC, 0x4000);
                P = (pll >> 16) & 0x07;
                pll = NV_RD32(par->PMC, 0x4004);
                M = pll & 0xFF;
                N = (pll >> 8) & 0xFF;
                MB = (pll >> 16) & 0xFF;
                NB = (pll >> 24) & 0xFF;

                *NVClk = ((N * NB * par->CrystalFreqKHz) / (M * MB)) >> P;
        } else if (par->twoStagePLL) {
                pll = NV_RD32(par->PRAMDAC0, 0x0504);
                M = pll & 0xFF;
                N = (pll >> 8) & 0xFF;
                P = (pll >> 16) & 0x0F;
                pll = NV_RD32(par->PRAMDAC0, 0x0574);
                if (pll & 0x80000000) {
                        MB = pll & 0xFF;
                        NB = (pll >> 8) & 0xFF;
                } else {
                        MB = 1;
                        NB = 1;
                }
                *MClk = ((N * NB * par->CrystalFreqKHz) / (M * MB)) >> P;

                pll = NV_RD32(par->PRAMDAC0, 0x0500);
                M = pll & 0xFF;
                N = (pll >> 8) & 0xFF;
                P = (pll >> 16) & 0x0F;
                pll = NV_RD32(par->PRAMDAC0, 0x0570);
                if (pll & 0x80000000) {
                        MB = pll & 0xFF;
                        NB = (pll >> 8) & 0xFF;
                } else {
                        MB = 1;
                        NB = 1;
                }
                *NVClk = ((N * NB * par->CrystalFreqKHz) / (M * MB)) >> P;
        } else
            if (((par->Chipset & 0x0ff0) == 0x0300) ||
                ((par->Chipset & 0x0ff0) == 0x0330)) {
                pll = NV_RD32(par->PRAMDAC0, 0x0504);
                M = pll & 0x0F;
                N = (pll >> 8) & 0xFF;
                P = (pll >> 16) & 0x07;
                if (pll & 0x00000080) {
                        MB = (pll >> 4) & 0x07;
                        NB = (pll >> 19) & 0x1f;
                } else {
                        MB = 1;
                        NB = 1;
                }
                *MClk = ((N * NB * par->CrystalFreqKHz) / (M * MB)) >> P;

                pll = NV_RD32(par->PRAMDAC0, 0x0500);
                M = pll & 0x0F;
                N = (pll >> 8) & 0xFF;
                P = (pll >> 16) & 0x07;
                if (pll & 0x00000080) {
                        MB = (pll >> 4) & 0x07;
                        NB = (pll >> 19) & 0x1f;
                } else {
                        MB = 1;
                        NB = 1;
                }
                *NVClk = ((N * NB * par->CrystalFreqKHz) / (M * MB)) >> P;
        } else {
                pll = NV_RD32(par->PRAMDAC0, 0x0504);
                M = pll & 0xFF;
                N = (pll >> 8) & 0xFF;
                P = (pll >> 16) & 0x0F;
                *MClk = (N * par->CrystalFreqKHz / M) >> P;

                pll = NV_RD32(par->PRAMDAC0, 0x0500);
                M = pll & 0xFF;
                N = (pll >> 8) & 0xFF;
                P = (pll >> 16) & 0x0F;
                *NVClk = (N * par->CrystalFreqKHz / M) >> P;
        }
}

static void nv4CalcArbitration(nv4_fifo_info * fifo, nv4_sim_state * arb)
{
        int data, pagemiss, cas, width, video_enable, bpp;
        int nvclks, mclks, pclks, vpagemiss, crtpagemiss, vbs;
        int found, mclk_extra, mclk_loop, cbs, m1, p1;
        int mclk_freq, pclk_freq, nvclk_freq, mp_enable;
        int us_m, us_n, us_p, video_drain_rate, crtc_drain_rate;
        int vpm_us, us_video, vlwm, video_fill_us, cpm_us, us_crt, clwm;

        fifo->valid = 1;
        pclk_freq = arb->pclk_khz;
        mclk_freq = arb->mclk_khz;
        nvclk_freq = arb->nvclk_khz;
        pagemiss = arb->mem_page_miss;
        cas = arb->mem_latency;
        width = arb->memory_width >> 6;
        video_enable = arb->enable_video;
        bpp = arb->pix_bpp;
        mp_enable = arb->enable_mp;
        clwm = 0;
        vlwm = 0;
        cbs = 128;
        pclks = 2;
        nvclks = 2;
        nvclks += 2;
        nvclks += 1;
        mclks = 5;
        mclks += 3;
        mclks += 1;
        mclks += cas;
        mclks += 1;
        mclks += 1;
        mclks += 1;
        mclks += 1;
        mclk_extra = 3;
        nvclks += 2;
        nvclks += 1;
        nvclks += 1;
        nvclks += 1;
        if (mp_enable)
                mclks += 4;
        nvclks += 0;
        pclks += 0;
        found = 0;
        vbs = 0;
        while (found != 1) {
                fifo->valid = 1;
                found = 1;
                mclk_loop = mclks + mclk_extra;
                us_m = mclk_loop * 1000 * 1000 / mclk_freq;
                us_n = nvclks * 1000 * 1000 / nvclk_freq;
                us_p = nvclks * 1000 * 1000 / pclk_freq;
                if (video_enable) {
                        video_drain_rate = pclk_freq * 2;
                        crtc_drain_rate = pclk_freq * bpp / 8;
                        vpagemiss = 2;
                        vpagemiss += 1;
                        crtpagemiss = 2;
                        vpm_us =
                            (vpagemiss * pagemiss) * 1000 * 1000 / mclk_freq;
                        if (nvclk_freq * 2 > mclk_freq * width)
                                video_fill_us =
                                    cbs * 1000 * 1000 / 16 / nvclk_freq;
                        else
                                video_fill_us =
                                    cbs * 1000 * 1000 / (8 * width) /
                                    mclk_freq;
                        us_video = vpm_us + us_m + us_n + us_p + video_fill_us;
                        vlwm = us_video * video_drain_rate / (1000 * 1000);
                        vlwm++;
                        vbs = 128;
                        if (vlwm > 128)
                                vbs = 64;
                        if (vlwm > (256 - 64))
                                vbs = 32;
                        if (nvclk_freq * 2 > mclk_freq * width)
                                video_fill_us =
                                    vbs * 1000 * 1000 / 16 / nvclk_freq;
                        else
                                video_fill_us =
                                    vbs * 1000 * 1000 / (8 * width) /
                                    mclk_freq;
                        cpm_us =
                            crtpagemiss * pagemiss * 1000 * 1000 / mclk_freq;
                        us_crt =
                            us_video + video_fill_us + cpm_us + us_m + us_n +
                            us_p;
                        clwm = us_crt * crtc_drain_rate / (1000 * 1000);
                        clwm++;
                } else {
                        crtc_drain_rate = pclk_freq * bpp / 8;
                        crtpagemiss = 2;
                        crtpagemiss += 1;
                        cpm_us =
                            crtpagemiss * pagemiss * 1000 * 1000 / mclk_freq;
                        us_crt = cpm_us + us_m + us_n + us_p;
                        clwm = us_crt * crtc_drain_rate / (1000 * 1000);
                        clwm++;
                }
                m1 = clwm + cbs - 512;
                p1 = m1 * pclk_freq / mclk_freq;
                p1 = p1 * bpp / 8;
                if ((p1 < m1) && (m1 > 0)) {
                        fifo->valid = 0;
                        found = 0;
                        if (mclk_extra == 0)
                                found = 1;
                        mclk_extra--;
                } else if (video_enable) {
                        if ((clwm > 511) || (vlwm > 255)) {
                                fifo->valid = 0;
                                found = 0;
                                if (mclk_extra == 0)
                                        found = 1;
                                mclk_extra--;
                        }
                } else {
                        if (clwm > 519) {
                                fifo->valid = 0;
                                found = 0;
                                if (mclk_extra == 0)
                                        found = 1;
                                mclk_extra--;
                        }
                }
                if (clwm < 384)
                        clwm = 384;
                if (vlwm < 128)
                        vlwm = 128;
                data = (int)(clwm);
                fifo->graphics_lwm = data;
                fifo->graphics_burst_size = 128;
                data = (int)((vlwm + 15));
                fifo->video_lwm = data;
                fifo->video_burst_size = vbs;
        }
}

static void nv4UpdateArbitrationSettings(unsigned VClk,
                                         unsigned pixelDepth,
                                         unsigned *burst,
                                         unsigned *lwm, struct nvidia_par *par)
{
        nv4_fifo_info fifo_data;
        nv4_sim_state sim_data;
        unsigned int MClk, NVClk, cfg1;

        nvGetClocks(par, &MClk, &NVClk);

        cfg1 = NV_RD32(par->PFB, 0x00000204);
        sim_data.pix_bpp = (char)pixelDepth;
        sim_data.enable_video = 0;
        sim_data.enable_mp = 0;
        sim_data.memory_width = (NV_RD32(par->PEXTDEV, 0x0000) & 0x10) ?
            128 : 64;
        sim_data.mem_latency = (char)cfg1 & 0x0F;
        sim_data.mem_aligned = 1;
        sim_data.mem_page_miss =
            (char)(((cfg1 >> 4) & 0x0F) + ((cfg1 >> 31) & 0x01));
        sim_data.gr_during_vid = 0;
        sim_data.pclk_khz = VClk;
        sim_data.mclk_khz = MClk;
        sim_data.nvclk_khz = NVClk;
        nv4CalcArbitration(&fifo_data, &sim_data);
        if (fifo_data.valid) {
                int b = fifo_data.graphics_burst_size >> 4;
                *burst = 0;
                while (b >>= 1)
                        (*burst)++;
                *lwm = fifo_data.graphics_lwm >> 3;
        }
}

static void nv10CalcArbitration(nv10_fifo_info * fifo, nv10_sim_state * arb)
{
        int data, pagemiss, width, video_enable, bpp;
        int nvclks, mclks, pclks, vpagemiss, crtpagemiss;
        int nvclk_fill;
        int found, mclk_extra, mclk_loop, cbs, m1;
        int mclk_freq, pclk_freq, nvclk_freq, mp_enable;
        int us_m, us_m_min, us_n, us_p, crtc_drain_rate;
        int vus_m;
        int vpm_us, us_video, cpm_us, us_crt, clwm;
        int clwm_rnd_down;
        int m2us, us_pipe_min, p1clk, p2;
        int min_mclk_extra;
        int us_min_mclk_extra;

        fifo->valid = 1;
        pclk_freq = arb->pclk_khz;      /* freq in KHz */
        mclk_freq = arb->mclk_khz;
        nvclk_freq = arb->nvclk_khz;
        pagemiss = arb->mem_page_miss;
        width = arb->memory_width / 64;
        video_enable = arb->enable_video;
        bpp = arb->pix_bpp;
        mp_enable = arb->enable_mp;
        clwm = 0;

        cbs = 512;

        pclks = 4;      /* lwm detect. */

        nvclks = 3;     /* lwm -> sync. */
        nvclks += 2;    /* fbi bus cycles (1 req + 1 busy) */
        /* 2 edge sync.  may be very close to edge so just put one. */
        mclks = 1;
        mclks += 1;     /* arb_hp_req */
        mclks += 5;     /* ap_hp_req   tiling pipeline */

        mclks += 2;     /* tc_req     latency fifo */
        mclks += 2;     /* fb_cas_n_  memory request to fbio block */
        mclks += 7;     /* sm_d_rdv   data returned from fbio block */

        /* fb.rd.d.Put_gc   need to accumulate 256 bits for read */
        if (arb->memory_type == 0)
                if (arb->memory_width == 64)    /* 64 bit bus */
                        mclks += 4;
                else
                        mclks += 2;
        else if (arb->memory_width == 64)       /* 64 bit bus */
                mclks += 2;
        else
                mclks += 1;

        if ((!video_enable) && (arb->memory_width == 128)) {
                mclk_extra = (bpp == 32) ? 31 : 42;     /* Margin of error */
                min_mclk_extra = 17;
        } else {
                mclk_extra = (bpp == 32) ? 8 : 4;       /* Margin of error */
                /* mclk_extra = 4; *//* Margin of error */
                min_mclk_extra = 18;
        }

        /* 2 edge sync.  may be very close to edge so just put one. */
        nvclks += 1;
        nvclks += 1;            /* fbi_d_rdv_n */
        nvclks += 1;            /* Fbi_d_rdata */
        nvclks += 1;            /* crtfifo load */

        if (mp_enable)
                mclks += 4;     /* Mp can get in with a burst of 8. */
        /* Extra clocks determined by heuristics */

        nvclks += 0;
        pclks += 0;
        found = 0;
        while (found != 1) {
                fifo->valid = 1;
                found = 1;
                mclk_loop = mclks + mclk_extra;
                /* Mclk latency in us */
                us_m = mclk_loop * 1000 * 1000 / mclk_freq;
                /* Minimum Mclk latency in us */
                us_m_min = mclks * 1000 * 1000 / mclk_freq;
                us_min_mclk_extra = min_mclk_extra * 1000 * 1000 / mclk_freq;
                /* nvclk latency in us */
                us_n = nvclks * 1000 * 1000 / nvclk_freq;
                /* nvclk latency in us */
                us_p = pclks * 1000 * 1000 / pclk_freq;
                us_pipe_min = us_m_min + us_n + us_p;

                /* Mclk latency in us */
                vus_m = mclk_loop * 1000 * 1000 / mclk_freq;

                if (video_enable) {
                        crtc_drain_rate = pclk_freq * bpp / 8;  /* MB/s */

                        vpagemiss = 1;  /* self generating page miss */
                        vpagemiss += 1; /* One higher priority before */

                        crtpagemiss = 2;        /* self generating page miss */
                        if (mp_enable)
                                crtpagemiss += 1;       /* if MA0 conflict */

                        vpm_us =
                            (vpagemiss * pagemiss) * 1000 * 1000 / mclk_freq;

                        /* Video has separate read return path */
                        us_video = vpm_us + vus_m;

                        cpm_us =
                            crtpagemiss * pagemiss * 1000 * 1000 / mclk_freq;
                        /* Wait for video */
                        us_crt = us_video
                            + cpm_us    /* CRT Page miss */
                            + us_m + us_n + us_p        /* other latency */
                            ;

                        clwm = us_crt * crtc_drain_rate / (1000 * 1000);
                        /* fixed point <= float_point - 1.  Fixes that */
                        clwm++;
                } else {
                    /* bpp * pclk/8 */
                        crtc_drain_rate = pclk_freq * bpp / 8;

                        crtpagemiss = 1;        /* self generating page miss */
                        crtpagemiss += 1;       /* MA0 page miss */
                        if (mp_enable)
                                crtpagemiss += 1;       /* if MA0 conflict */
                        cpm_us =
                            crtpagemiss * pagemiss * 1000 * 1000 / mclk_freq;
                        us_crt = cpm_us + us_m + us_n + us_p;
                        clwm = us_crt * crtc_drain_rate / (1000 * 1000);
                        /* fixed point <= float_point - 1.  Fixes that */
                        clwm++;

                        /* Finally, a heuristic check when width == 64 bits */
                        if (width == 1) {
                                nvclk_fill = nvclk_freq * 8;
                                if (crtc_drain_rate * 100 >= nvclk_fill * 102)
                                        /*Large number to fail */
                                        clwm = 0xfff;

                                else if (crtc_drain_rate * 100 >=
                                         nvclk_fill * 98) {
                                        clwm = 1024;
                                        cbs = 512;
                                }
                        }
                }

                /*
                   Overfill check:
                 */

                clwm_rnd_down = ((int)clwm / 8) * 8;
                if (clwm_rnd_down < clwm)
                        clwm += 8;

                m1 = clwm + cbs - 1024; /* Amount of overfill */
                m2us = us_pipe_min + us_min_mclk_extra;

                /* pclk cycles to drain */
                p1clk = m2us * pclk_freq / (1000 * 1000);
                p2 = p1clk * bpp / 8;   /* bytes drained. */

                if ((p2 < m1) && (m1 > 0)) {
                        fifo->valid = 0;
                        found = 0;
                        if (min_mclk_extra == 0) {
                                if (cbs <= 32) {
                                        /* Can't adjust anymore! */
                                        found = 1;
                                } else {
                                        /* reduce the burst size */
                                        cbs = cbs / 2;
                                }
                        } else {
                                min_mclk_extra--;
                        }
                } else {
                        if (clwm > 1023) {      /* Have some margin */
                                fifo->valid = 0;
                                found = 0;
                                if (min_mclk_extra == 0)
                                        /* Can't adjust anymore! */
                                        found = 1;
                                else
                                        min_mclk_extra--;
                        }
                }

                if (clwm < (1024 - cbs + 8))
                        clwm = 1024 - cbs + 8;
                data = (int)(clwm);
                /*  printf("CRT LWM: %f bytes, prog: 0x%x, bs: 256\n",
                    clwm, data ); */
                fifo->graphics_lwm = data;
                fifo->graphics_burst_size = cbs;

                fifo->video_lwm = 1024;
                fifo->video_burst_size = 512;
        }
}

static void nv10UpdateArbitrationSettings(unsigned VClk,
                                          unsigned pixelDepth,
                                          unsigned *burst,
                                          unsigned *lwm,
                                          struct nvidia_par *par)
{
        nv10_fifo_info fifo_data;
        nv10_sim_state sim_data;
        unsigned int MClk, NVClk, cfg1;

        nvGetClocks(par, &MClk, &NVClk);

        cfg1 = NV_RD32(par->PFB, 0x0204);
        sim_data.pix_bpp = (char)pixelDepth;
        sim_data.enable_video = 1;
        sim_data.enable_mp = 0;
        sim_data.memory_type = (NV_RD32(par->PFB, 0x0200) & 0x01) ? 1 : 0;
        sim_data.memory_width = (NV_RD32(par->PEXTDEV, 0x0000) & 0x10) ?
            128 : 64;
        sim_data.mem_latency = (char)cfg1 & 0x0F;
        sim_data.mem_aligned = 1;
        sim_data.mem_page_miss =
            (char)(((cfg1 >> 4) & 0x0F) + ((cfg1 >> 31) & 0x01));
        sim_data.gr_during_vid = 0;
        sim_data.pclk_khz = VClk;
        sim_data.mclk_khz = MClk;
        sim_data.nvclk_khz = NVClk;
        nv10CalcArbitration(&fifo_data, &sim_data);
        if (fifo_data.valid) {
                int b = fifo_data.graphics_burst_size >> 4;
                *burst = 0;
                while (b >>= 1)
                        (*burst)++;
                *lwm = fifo_data.graphics_lwm >> 3;
        }
}

static void nv30UpdateArbitrationSettings (
    struct nvidia_par *par,
    unsigned int      *burst,
    unsigned int      *lwm
)
{
    unsigned int MClk, NVClk;
    unsigned int fifo_size, burst_size, graphics_lwm;

    fifo_size = 2048;
    burst_size = 512;
    graphics_lwm = fifo_size - burst_size;

    nvGetClocks(par, &MClk, &NVClk);

    *burst = 0;
    burst_size >>= 5;
    while(burst_size >>= 1) (*burst)++;
    *lwm = graphics_lwm >> 3;
}

static void nForceUpdateArbitrationSettings(unsigned VClk,
                                            unsigned pixelDepth,
                                            unsigned *burst,
                                            unsigned *lwm,
                                            struct nvidia_par *par)
{
        nv10_fifo_info fifo_data;
        nv10_sim_state sim_data;
        unsigned int M, N, P, pll, MClk, NVClk, memctrl;
        struct pci_dev *dev;

        if ((par->Chipset & 0x0FF0) == 0x01A0) {
                unsigned int uMClkPostDiv;
                dev = pci_get_bus_and_slot(0, 3);
                pci_read_config_dword(dev, 0x6C, &uMClkPostDiv);
                uMClkPostDiv = (uMClkPostDiv >> 8) & 0xf;

                if (!uMClkPostDiv)
                        uMClkPostDiv = 4;
                MClk = 400000 / uMClkPostDiv;
        } else {
                dev = pci_get_bus_and_slot(0, 5);
                pci_read_config_dword(dev, 0x4c, &MClk);
                MClk /= 1000;
        }
        pci_dev_put(dev);
        pll = NV_RD32(par->PRAMDAC0, 0x0500);
        M = (pll >> 0) & 0xFF;
        N = (pll >> 8) & 0xFF;
        P = (pll >> 16) & 0x0F;
        NVClk = (N * par->CrystalFreqKHz / M) >> P;
        sim_data.pix_bpp = (char)pixelDepth;
        sim_data.enable_video = 0;
        sim_data.enable_mp = 0;
        dev = pci_get_bus_and_slot(0, 1);
        pci_read_config_dword(dev, 0x7C, &sim_data.memory_type);
        pci_dev_put(dev);
        sim_data.memory_type = (sim_data.memory_type >> 12) & 1;
        sim_data.memory_width = 64;

        dev = pci_get_bus_and_slot(0, 3);
        pci_read_config_dword(dev, 0, &memctrl);
        pci_dev_put(dev);
        memctrl >>= 16;

        if ((memctrl == 0x1A9) || (memctrl == 0x1AB) || (memctrl == 0x1ED)) {
                u32 dimm[3];

                dev = pci_get_bus_and_slot(0, 2);
                pci_read_config_dword(dev, 0x40, &dimm[0]);
                dimm[0] = (dimm[0] >> 8) & 0x4f;
                pci_read_config_dword(dev, 0x44, &dimm[1]);
                dimm[1] = (dimm[1] >> 8) & 0x4f;
                pci_read_config_dword(dev, 0x48, &dimm[2]);
                dimm[2] = (dimm[2] >> 8) & 0x4f;

                if ((dimm[0] + dimm[1]) != dimm[2]) {
                        printk("nvidiafb: your nForce DIMMs are not arranged "
                               "in optimal banks!\n");
                }
                pci_dev_put(dev);
        }

        sim_data.mem_latency = 3;
        sim_data.mem_aligned = 1;
        sim_data.mem_page_miss = 10;
        sim_data.gr_during_vid = 0;
        sim_data.pclk_khz = VClk;
        sim_data.mclk_khz = MClk;
        sim_data.nvclk_khz = NVClk;
        nv10CalcArbitration(&fifo_data, &sim_data);
        if (fifo_data.valid) {
                int b = fifo_data.graphics_burst_size >> 4;
                *burst = 0;
                while (b >>= 1)
                        (*burst)++;
                *lwm = fifo_data.graphics_lwm >> 3;
        }
}

/****************************************************************************\
*                                                                            *
*                          RIVA Mode State Routines                          *
*                                                                            *
\****************************************************************************/

/*
 * Calculate the Video Clock parameters for the PLL.
 */
static void CalcVClock(int clockIn,
                       int *clockOut, u32 * pllOut, struct nvidia_par *par)
{
        unsigned lowM, highM;
        unsigned DeltaNew, DeltaOld;
        unsigned VClk, Freq;
        unsigned M, N, P;

        DeltaOld = 0xFFFFFFFF;

        VClk = (unsigned)clockIn;

        if (par->CrystalFreqKHz == 13500) {
                lowM = 7;
                highM = 13;
        } else {
                lowM = 8;
                highM = 14;
        }

        for (P = 0; P <= 4; P++) {
                Freq = VClk << P;
                if ((Freq >= 128000) && (Freq <= 350000)) {
                        for (M = lowM; M <= highM; M++) {
                                N = ((VClk << P) * M) / par->CrystalFreqKHz;
                                if (N <= 255) {
                                        Freq =
                                            ((par->CrystalFreqKHz * N) /
                                             M) >> P;
                                        if (Freq > VClk)
                                                DeltaNew = Freq - VClk;
                                        else
                                                DeltaNew = VClk - Freq;
                                        if (DeltaNew < DeltaOld) {
                                                *pllOut =
                                                    (P << 16) | (N << 8) | M;
                                                *clockOut = Freq;
                                                DeltaOld = DeltaNew;
                                        }
                                }
                        }
                }
        }
}

static void CalcVClock2Stage(int clockIn,
                             int *clockOut,
                             u32 * pllOut,
                             u32 * pllBOut, struct nvidia_par *par)
{
        unsigned DeltaNew, DeltaOld;
        unsigned VClk, Freq;
        unsigned M, N, P;

        DeltaOld = 0xFFFFFFFF;

        *pllBOut = 0x80000401;  /* fixed at x4 for now */

        VClk = (unsigned)clockIn;

        for (P = 0; P <= 6; P++) {
                Freq = VClk << P;
                if ((Freq >= 400000) && (Freq <= 1000000)) {
                        for (M = 1; M <= 13; M++) {
                                N = ((VClk << P) * M) /
                                    (par->CrystalFreqKHz << 2);
                                if ((N >= 5) && (N <= 255)) {
                                        Freq =
                                            (((par->CrystalFreqKHz << 2) * N) /
                                             M) >> P;
                                        if (Freq > VClk)
                                                DeltaNew = Freq - VClk;
                                        else
                                                DeltaNew = VClk - Freq;
                                        if (DeltaNew < DeltaOld) {
                                                *pllOut =
                                                    (P << 16) | (N << 8) | M;
                                                *clockOut = Freq;
                                                DeltaOld = DeltaNew;
                                        }
                                }
                        }
                }
        }
}

/*
 * Calculate extended mode parameters (SVGA) and save in a
 * mode state structure.
 */
void NVCalcStateExt(struct nvidia_par *par,
                    RIVA_HW_STATE * state,
                    int bpp,
                    int width,
                    int hDisplaySize, int height, int dotClock, int flags)
{
        int pixelDepth, VClk = 0;
        /*
         * Save mode parameters.
         */
        state->bpp = bpp;       /* this is not bitsPerPixel, it's 8,15,16,32 */
        state->width = width;
        state->height = height;
        /*
         * Extended RIVA registers.
         */
        pixelDepth = (bpp + 1) / 8;
        if (par->twoStagePLL)
                CalcVClock2Stage(dotClock, &VClk, &state->pll, &state->pllB,
                                 par);
        else
                CalcVClock(dotClock, &VClk, &state->pll, par);

        switch (par->Architecture) {
        case NV_ARCH_04:
                nv4UpdateArbitrationSettings(VClk,
                                             pixelDepth * 8,
                                             &(state->arbitration0),
                                             &(state->arbitration1), par);
                state->cursor0 = 0x00;
                state->cursor1 = 0xbC;
                if (flags & FB_VMODE_DOUBLE)
                        state->cursor1 |= 2;
                state->cursor2 = 0x00000000;
                state->pllsel = 0x10000700;
                state->config = 0x00001114;
                state->general = bpp == 16 ? 0x00101100 : 0x00100100;
                state->repaint1 = hDisplaySize < 1280 ? 0x04 : 0x00;
                break;
        case NV_ARCH_40:
                if (!par->FlatPanel)
                        state->control = NV_RD32(par->PRAMDAC0, 0x0580) &
                                0xeffffeff;
                /* fallthrough */
        case NV_ARCH_10:
        case NV_ARCH_20:
        case NV_ARCH_30:
        default:
                if ((par->Chipset & 0xfff0) == 0x0240 ||
                    (par->Chipset & 0xfff0) == 0x03d0) {
                        state->arbitration0 = 256;
                        state->arbitration1 = 0x0480;
                } else if (((par->Chipset & 0xffff) == 0x01A0) ||
                    ((par->Chipset & 0xffff) == 0x01f0)) {
                        nForceUpdateArbitrationSettings(VClk,
                                                        pixelDepth * 8,
                                                        &(state->arbitration0),
                                                        &(state->arbitration1),
                                                        par);
                } else if (par->Architecture < NV_ARCH_30) {
                        nv10UpdateArbitrationSettings(VClk,
                                                      pixelDepth * 8,
                                                      &(state->arbitration0),
                                                      &(state->arbitration1),
                                                      par);
                } else {
                        nv30UpdateArbitrationSettings(par,
                                                      &(state->arbitration0),
                                                      &(state->arbitration1));
                }

                state->cursor0 = 0x80 | (par->CursorStart >> 17);
                state->cursor1 = (par->CursorStart >> 11) << 2;
                state->cursor2 = par->CursorStart >> 24;
                if (flags & FB_VMODE_DOUBLE)
                        state->cursor1 |= 2;
                state->pllsel = 0x10000700;
                state->config = NV_RD32(par->PFB, 0x00000200);
                state->general = bpp == 16 ? 0x00101100 : 0x00100100;
                state->repaint1 = hDisplaySize < 1280 ? 0x04 : 0x00;
                break;
        }

        if (bpp != 8)           /* DirectColor */
                state->general |= 0x00000030;

        state->repaint0 = (((width / 8) * pixelDepth) & 0x700) >> 3;
        state->pixel = (pixelDepth > 2) ? 3 : pixelDepth;
}

void NVLoadStateExt(struct nvidia_par *par, RIVA_HW_STATE * state)
{
        int i, j;

        NV_WR32(par->PMC, 0x0140, 0x00000000);
        NV_WR32(par->PMC, 0x0200, 0xFFFF00FF);
        NV_WR32(par->PMC, 0x0200, 0xFFFFFFFF);

        NV_WR32(par->PTIMER, 0x0200 * 4, 0x00000008);
        NV_WR32(par->PTIMER, 0x0210 * 4, 0x00000003);
        NV_WR32(par->PTIMER, 0x0140 * 4, 0x00000000);
        NV_WR32(par->PTIMER, 0x0100 * 4, 0xFFFFFFFF);

        if (par->Architecture == NV_ARCH_04) {
                if (state)
                        NV_WR32(par->PFB, 0x0200, state->config);
        } else if ((par->Architecture < NV_ARCH_40) ||
                   (par->Chipset & 0xfff0) == 0x0040) {
                for (i = 0; i < 8; i++) {
                        NV_WR32(par->PFB, 0x0240 + (i * 0x10), 0);
                        NV_WR32(par->PFB, 0x0244 + (i * 0x10),
                                par->FbMapSize - 1);
                }
        } else {
                int regions = 12;

                if (((par->Chipset & 0xfff0) == 0x0090) ||
                    ((par->Chipset & 0xfff0) == 0x01D0) ||
                    ((par->Chipset & 0xfff0) == 0x0290) ||
                    ((par->Chipset & 0xfff0) == 0x0390) ||
                    ((par->Chipset & 0xfff0) == 0x03D0))
                        regions = 15;
                for(i = 0; i < regions; i++) {
                        NV_WR32(par->PFB, 0x0600 + (i * 0x10), 0);
                        NV_WR32(par->PFB, 0x0604 + (i * 0x10),
                                par->FbMapSize - 1);
                }
        }

        if (par->Architecture >= NV_ARCH_40) {
                NV_WR32(par->PRAMIN, 0x0000 * 4, 0x80000010);
                NV_WR32(par->PRAMIN, 0x0001 * 4, 0x00101202);
                NV_WR32(par->PRAMIN, 0x0002 * 4, 0x80000011);
                NV_WR32(par->PRAMIN, 0x0003 * 4, 0x00101204);
                NV_WR32(par->PRAMIN, 0x0004 * 4, 0x80000012);
                NV_WR32(par->PRAMIN, 0x0005 * 4, 0x00101206);
                NV_WR32(par->PRAMIN, 0x0006 * 4, 0x80000013);
                NV_WR32(par->PRAMIN, 0x0007 * 4, 0x00101208);
                NV_WR32(par->PRAMIN, 0x0008 * 4, 0x80000014);
                NV_WR32(par->PRAMIN, 0x0009 * 4, 0x0010120A);
                NV_WR32(par->PRAMIN, 0x000A * 4, 0x80000015);
                NV_WR32(par->PRAMIN, 0x000B * 4, 0x0010120C);
                NV_WR32(par->PRAMIN, 0x000C * 4, 0x80000016);
                NV_WR32(par->PRAMIN, 0x000D * 4, 0x0010120E);
                NV_WR32(par->PRAMIN, 0x000E * 4, 0x80000017);
                NV_WR32(par->PRAMIN, 0x000F * 4, 0x00101210);

                NV_WR32(par->PRAMIN, 0x0800 * 4, 0x00003000);
                NV_WR32(par->PRAMIN, 0x0801 * 4, par->FbMapSize - 1);
                NV_WR32(par->PRAMIN, 0x0802 * 4, 0x00000002);
                NV_WR32(par->PRAMIN, 0x0808 * 4, 0x02080062);
                NV_WR32(par->PRAMIN, 0x0809 * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x080A * 4, 0x00001200);
                NV_WR32(par->PRAMIN, 0x080B * 4, 0x00001200);
                NV_WR32(par->PRAMIN, 0x080C * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x080D * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x0810 * 4, 0x02080043);
                NV_WR32(par->PRAMIN, 0x0811 * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x0812 * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x0813 * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x0814 * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x0815 * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x0818 * 4, 0x02080044);
                NV_WR32(par->PRAMIN, 0x0819 * 4, 0x02000000);
                NV_WR32(par->PRAMIN, 0x081A * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x081B * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x081C * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x081D * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x0820 * 4, 0x02080019);
                NV_WR32(par->PRAMIN, 0x0821 * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x0822 * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x0823 * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x0824 * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x0825 * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x0828 * 4, 0x020A005C);
                NV_WR32(par->PRAMIN, 0x0829 * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x082A * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x082B * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x082C * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x082D * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x0830 * 4, 0x0208009F);
                NV_WR32(par->PRAMIN, 0x0831 * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x0832 * 4, 0x00001200);
                NV_WR32(par->PRAMIN, 0x0833 * 4, 0x00001200);
                NV_WR32(par->PRAMIN, 0x0834 * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x0835 * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x0838 * 4, 0x0208004A);
                NV_WR32(par->PRAMIN, 0x0839 * 4, 0x02000000);
                NV_WR32(par->PRAMIN, 0x083A * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x083B * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x083C * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x083D * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x0840 * 4, 0x02080077);
                NV_WR32(par->PRAMIN, 0x0841 * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x0842 * 4, 0x00001200);
                NV_WR32(par->PRAMIN, 0x0843 * 4, 0x00001200);
                NV_WR32(par->PRAMIN, 0x0844 * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x0845 * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x084C * 4, 0x00003002);
                NV_WR32(par->PRAMIN, 0x084D * 4, 0x00007FFF);
                NV_WR32(par->PRAMIN, 0x084E * 4,
                        par->FbUsableSize | 0x00000002);

#ifdef __BIG_ENDIAN
                NV_WR32(par->PRAMIN, 0x080A * 4,
                        NV_RD32(par->PRAMIN, 0x080A * 4) | 0x01000000);
                NV_WR32(par->PRAMIN, 0x0812 * 4,
                        NV_RD32(par->PRAMIN, 0x0812 * 4) | 0x01000000);
                NV_WR32(par->PRAMIN, 0x081A * 4,
                        NV_RD32(par->PRAMIN, 0x081A * 4) | 0x01000000);
                NV_WR32(par->PRAMIN, 0x0822 * 4,
                        NV_RD32(par->PRAMIN, 0x0822 * 4) | 0x01000000);
                NV_WR32(par->PRAMIN, 0x082A * 4,
                        NV_RD32(par->PRAMIN, 0x082A * 4) | 0x01000000);
                NV_WR32(par->PRAMIN, 0x0832 * 4,
                        NV_RD32(par->PRAMIN, 0x0832 * 4) | 0x01000000);
                NV_WR32(par->PRAMIN, 0x083A * 4,
                        NV_RD32(par->PRAMIN, 0x083A * 4) | 0x01000000);
                NV_WR32(par->PRAMIN, 0x0842 * 4,
                        NV_RD32(par->PRAMIN, 0x0842 * 4) | 0x01000000);
                NV_WR32(par->PRAMIN, 0x0819 * 4, 0x01000000);
                NV_WR32(par->PRAMIN, 0x0839 * 4, 0x01000000);
#endif
        } else {
                NV_WR32(par->PRAMIN, 0x0000 * 4, 0x80000010);
                NV_WR32(par->PRAMIN, 0x0001 * 4, 0x80011201);
                NV_WR32(par->PRAMIN, 0x0002 * 4, 0x80000011);
                NV_WR32(par->PRAMIN, 0x0003 * 4, 0x80011202);
                NV_WR32(par->PRAMIN, 0x0004 * 4, 0x80000012);
                NV_WR32(par->PRAMIN, 0x0005 * 4, 0x80011203);
                NV_WR32(par->PRAMIN, 0x0006 * 4, 0x80000013);
                NV_WR32(par->PRAMIN, 0x0007 * 4, 0x80011204);
                NV_WR32(par->PRAMIN, 0x0008 * 4, 0x80000014);
                NV_WR32(par->PRAMIN, 0x0009 * 4, 0x80011205);
                NV_WR32(par->PRAMIN, 0x000A * 4, 0x80000015);
                NV_WR32(par->PRAMIN, 0x000B * 4, 0x80011206);
                NV_WR32(par->PRAMIN, 0x000C * 4, 0x80000016);
                NV_WR32(par->PRAMIN, 0x000D * 4, 0x80011207);
                NV_WR32(par->PRAMIN, 0x000E * 4, 0x80000017);
                NV_WR32(par->PRAMIN, 0x000F * 4, 0x80011208);
                NV_WR32(par->PRAMIN, 0x0800 * 4, 0x00003000);
                NV_WR32(par->PRAMIN, 0x0801 * 4, par->FbMapSize - 1);
                NV_WR32(par->PRAMIN, 0x0802 * 4, 0x00000002);
                NV_WR32(par->PRAMIN, 0x0803 * 4, 0x00000002);
                if (par->Architecture >= NV_ARCH_10)
                        NV_WR32(par->PRAMIN, 0x0804 * 4, 0x01008062);
                else
                        NV_WR32(par->PRAMIN, 0x0804 * 4, 0x01008042);
                NV_WR32(par->PRAMIN, 0x0805 * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x0806 * 4, 0x12001200);
                NV_WR32(par->PRAMIN, 0x0807 * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x0808 * 4, 0x01008043);
                NV_WR32(par->PRAMIN, 0x0809 * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x080A * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x080B * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x080C * 4, 0x01008044);
                NV_WR32(par->PRAMIN, 0x080D * 4, 0x00000002);
                NV_WR32(par->PRAMIN, 0x080E * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x080F * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x0810 * 4, 0x01008019);
                NV_WR32(par->PRAMIN, 0x0811 * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x0812 * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x0813 * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x0814 * 4, 0x0100A05C);
                NV_WR32(par->PRAMIN, 0x0815 * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x0816 * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x0817 * 4, 0x00000000);
                if (par->WaitVSyncPossible)
                        NV_WR32(par->PRAMIN, 0x0818 * 4, 0x0100809F);
                else
                        NV_WR32(par->PRAMIN, 0x0818 * 4, 0x0100805F);
                NV_WR32(par->PRAMIN, 0x0819 * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x081A * 4, 0x12001200);
                NV_WR32(par->PRAMIN, 0x081B * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x081C * 4, 0x0100804A);
                NV_WR32(par->PRAMIN, 0x081D * 4, 0x00000002);
                NV_WR32(par->PRAMIN, 0x081E * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x081F * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x0820 * 4, 0x01018077);
                NV_WR32(par->PRAMIN, 0x0821 * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x0822 * 4, 0x12001200);
                NV_WR32(par->PRAMIN, 0x0823 * 4, 0x00000000);
                NV_WR32(par->PRAMIN, 0x0824 * 4, 0x00003002);
                NV_WR32(par->PRAMIN, 0x0825 * 4, 0x00007FFF);
                NV_WR32(par->PRAMIN, 0x0826 * 4,
                        par->FbUsableSize | 0x00000002);
                NV_WR32(par->PRAMIN, 0x0827 * 4, 0x00000002);
#ifdef __BIG_ENDIAN
                NV_WR32(par->PRAMIN, 0x0804 * 4,
                        NV_RD32(par->PRAMIN, 0x0804 * 4) | 0x00080000);
                NV_WR32(par->PRAMIN, 0x0808 * 4,
                        NV_RD32(par->PRAMIN, 0x0808 * 4) | 0x00080000);
                NV_WR32(par->PRAMIN, 0x080C * 4,
                        NV_RD32(par->PRAMIN, 0x080C * 4) | 0x00080000);
                NV_WR32(par->PRAMIN, 0x0810 * 4,
                        NV_RD32(par->PRAMIN, 0x0810 * 4) | 0x00080000);
                NV_WR32(par->PRAMIN, 0x0814 * 4,
                        NV_RD32(par->PRAMIN, 0x0814 * 4) | 0x00080000);
                NV_WR32(par->PRAMIN, 0x0818 * 4,
                        NV_RD32(par->PRAMIN, 0x0818 * 4) | 0x00080000);
                NV_WR32(par->PRAMIN, 0x081C * 4,
                        NV_RD32(par->PRAMIN, 0x081C * 4) | 0x00080000);
                NV_WR32(par->PRAMIN, 0x0820 * 4,
                        NV_RD32(par->PRAMIN, 0x0820 * 4) | 0x00080000);
                NV_WR32(par->PRAMIN, 0x080D * 4, 0x00000001);
                NV_WR32(par->PRAMIN, 0x081D * 4, 0x00000001);
#endif
        }
        if (par->Architecture < NV_ARCH_10) {
                if ((par->Chipset & 0x0fff) == 0x0020) {
                        NV_WR32(par->PRAMIN, 0x0824 * 4,
                                NV_RD32(par->PRAMIN, 0x0824 * 4) | 0x00020000);
                        NV_WR32(par->PRAMIN, 0x0826 * 4,
                                NV_RD32(par->PRAMIN,
                                        0x0826 * 4) + par->FbAddress);
                }
                NV_WR32(par->PGRAPH, 0x0080, 0x000001FF);
                NV_WR32(par->PGRAPH, 0x0080, 0x1230C000);
                NV_WR32(par->PGRAPH, 0x0084, 0x72111101);
                NV_WR32(par->PGRAPH, 0x0088, 0x11D5F071);
                NV_WR32(par->PGRAPH, 0x008C, 0x0004FF31);
                NV_WR32(par->PGRAPH, 0x008C, 0x4004FF31);
                NV_WR32(par->PGRAPH, 0x0140, 0x00000000);
                NV_WR32(par->PGRAPH, 0x0100, 0xFFFFFFFF);
                NV_WR32(par->PGRAPH, 0x0170, 0x10010100);
                NV_WR32(par->PGRAPH, 0x0710, 0xFFFFFFFF);
                NV_WR32(par->PGRAPH, 0x0720, 0x00000001);
                NV_WR32(par->PGRAPH, 0x0810, 0x00000000);
                NV_WR32(par->PGRAPH, 0x0608, 0xFFFFFFFF);
        } else {
                NV_WR32(par->PGRAPH, 0x0080, 0xFFFFFFFF);
                NV_WR32(par->PGRAPH, 0x0080, 0x00000000);

                NV_WR32(par->PGRAPH, 0x0140, 0x00000000);
                NV_WR32(par->PGRAPH, 0x0100, 0xFFFFFFFF);
                NV_WR32(par->PGRAPH, 0x0144, 0x10010100);
                NV_WR32(par->PGRAPH, 0x0714, 0xFFFFFFFF);
                NV_WR32(par->PGRAPH, 0x0720, 0x00000001);
                NV_WR32(par->PGRAPH, 0x0710,
                        NV_RD32(par->PGRAPH, 0x0710) & 0x0007ff00);
                NV_WR32(par->PGRAPH, 0x0710,
                        NV_RD32(par->PGRAPH, 0x0710) | 0x00020100);

                if (par->Architecture == NV_ARCH_10) {
                        NV_WR32(par->PGRAPH, 0x0084, 0x00118700);
                        NV_WR32(par->PGRAPH, 0x0088, 0x24E00810);
                        NV_WR32(par->PGRAPH, 0x008C, 0x55DE0030);

                        for (i = 0; i < 32; i++)
                                NV_WR32(&par->PGRAPH[(0x0B00 / 4) + i], 0,
                                        NV_RD32(&par->PFB[(0x0240 / 4) + i],
                                                0));

                        NV_WR32(par->PGRAPH, 0x640, 0);
                        NV_WR32(par->PGRAPH, 0x644, 0);
                        NV_WR32(par->PGRAPH, 0x684, par->FbMapSize - 1);
                        NV_WR32(par->PGRAPH, 0x688, par->FbMapSize - 1);

                        NV_WR32(par->PGRAPH, 0x0810, 0x00000000);
                        NV_WR32(par->PGRAPH, 0x0608, 0xFFFFFFFF);
                } else {
                        if (par->Architecture >= NV_ARCH_40) {
                                NV_WR32(par->PGRAPH, 0x0084, 0x401287c0);
                                NV_WR32(par->PGRAPH, 0x008C, 0x60de8051);
                                NV_WR32(par->PGRAPH, 0x0090, 0x00008000);
                                NV_WR32(par->PGRAPH, 0x0610, 0x00be3c5f);
                                NV_WR32(par->PGRAPH, 0x0bc4,
                                        NV_RD32(par->PGRAPH, 0x0bc4) |
                                        0x00008000);

                                j = NV_RD32(par->REGS, 0x1540) & 0xff;

                                if (j) {
                                        for (i = 0; !(j & 1); j >>= 1, i++);
                                        NV_WR32(par->PGRAPH, 0x5000, i);
                                }

                                if ((par->Chipset & 0xfff0) == 0x0040) {
                                        NV_WR32(par->PGRAPH, 0x09b0,
                                                0x83280fff);
                                        NV_WR32(par->PGRAPH, 0x09b4,
                                                0x000000a0);
                                } else {
                                        NV_WR32(par->PGRAPH, 0x0820,
                                                0x83280eff);
                                        NV_WR32(par->PGRAPH, 0x0824,
                                                0x000000a0);
                                }

                                switch (par->Chipset & 0xfff0) {
                                case 0x0040:
                                case 0x0210:
                                        NV_WR32(par->PGRAPH, 0x09b8,
                                                0x0078e366);
                                        NV_WR32(par->PGRAPH, 0x09bc,
                                                0x0000014c);
                                        NV_WR32(par->PFB, 0x033C,
                                                NV_RD32(par->PFB, 0x33C) &
                                                0xffff7fff);
                                        break;
                                case 0x00C0:
                                case 0x0120:
                                        NV_WR32(par->PGRAPH, 0x0828,
                                                0x007596ff);
                                        NV_WR32(par->PGRAPH, 0x082C,
                                                0x00000108);
                                        break;
                                case 0x0160:
                                case 0x01D0:
                                case 0x0240:
                                case 0x03D0:
                                        NV_WR32(par->PMC, 0x1700,
                                                NV_RD32(par->PFB, 0x020C));
                                        NV_WR32(par->PMC, 0x1704, 0);
                                        NV_WR32(par->PMC, 0x1708, 0);
                                        NV_WR32(par->PMC, 0x170C,
                                                NV_RD32(par->PFB, 0x020C));
                                        NV_WR32(par->PGRAPH, 0x0860, 0);
                                        NV_WR32(par->PGRAPH, 0x0864, 0);
                                        NV_WR32(par->PRAMDAC, 0x0608,
                                                NV_RD32(par->PRAMDAC,
                                                        0x0608) | 0x00100000);
                                        break;
                                case 0x0140:
                                        NV_WR32(par->PGRAPH, 0x0828,
                                                0x0072cb77);
                                        NV_WR32(par->PGRAPH, 0x082C,
                                                0x00000108);
                                        break;
                                case 0x0220:
                                        NV_WR32(par->PGRAPH, 0x0860, 0);
                                        NV_WR32(par->PGRAPH, 0x0864, 0);
                                        NV_WR32(par->PRAMDAC, 0x0608,
                                                NV_RD32(par->PRAMDAC, 0x0608) |
                                                0x00100000);
                                        break;
                                case 0x0090:
                                case 0x0290:
                                case 0x0390:
                                        NV_WR32(par->PRAMDAC, 0x0608,
                                                NV_RD32(par->PRAMDAC, 0x0608) |
                                                0x00100000);
                                        NV_WR32(par->PGRAPH, 0x0828,
                                                0x07830610);
                                        NV_WR32(par->PGRAPH, 0x082C,
                                                0x0000016A);
                                        break;
                                default:
                                        break;
                                }

                                NV_WR32(par->PGRAPH, 0x0b38, 0x2ffff800);
                                NV_WR32(par->PGRAPH, 0x0b3c, 0x00006000);
                                NV_WR32(par->PGRAPH, 0x032C, 0x01000000);
                                NV_WR32(par->PGRAPH, 0x0220, 0x00001200);
                        } else if (par->Architecture == NV_ARCH_30) {
                                NV_WR32(par->PGRAPH, 0x0084, 0x40108700);
                                NV_WR32(par->PGRAPH, 0x0890, 0x00140000);
                                NV_WR32(par->PGRAPH, 0x008C, 0xf00e0431);
                                NV_WR32(par->PGRAPH, 0x0090, 0x00008000);
                                NV_WR32(par->PGRAPH, 0x0610, 0xf04b1f36);
                                NV_WR32(par->PGRAPH, 0x0B80, 0x1002d888);
                                NV_WR32(par->PGRAPH, 0x0B88, 0x62ff007f);
                        } else {
                                NV_WR32(par->PGRAPH, 0x0084, 0x00118700);
                                NV_WR32(par->PGRAPH, 0x008C, 0xF20E0431);
                                NV_WR32(par->PGRAPH, 0x0090, 0x00000000);
                                NV_WR32(par->PGRAPH, 0x009C, 0x00000040);

                                if ((par->Chipset & 0x0ff0) >= 0x0250) {
                                        NV_WR32(par->PGRAPH, 0x0890,
                                                0x00080000);
                                        NV_WR32(par->PGRAPH, 0x0610,
                                                0x304B1FB6);
                                        NV_WR32(par->PGRAPH, 0x0B80,
                                                0x18B82880);
                                        NV_WR32(par->PGRAPH, 0x0B84,
                                                0x44000000);
                                        NV_WR32(par->PGRAPH, 0x0098,
                                                0x40000080);
                                        NV_WR32(par->PGRAPH, 0x0B88,
                                                0x000000ff);
                                } else {
                                        NV_WR32(par->PGRAPH, 0x0880,
                                                0x00080000);
                                        NV_WR32(par->PGRAPH, 0x0094,
                                                0x00000005);
                                        NV_WR32(par->PGRAPH, 0x0B80,
                                                0x45CAA208);
                                        NV_WR32(par->PGRAPH, 0x0B84,
                                                0x24000000);
                                        NV_WR32(par->PGRAPH, 0x0098,
                                                0x00000040);
                                        NV_WR32(par->PGRAPH, 0x0750,
                                                0x00E00038);
                                        NV_WR32(par->PGRAPH, 0x0754,
                                                0x00000030);
                                        NV_WR32(par->PGRAPH, 0x0750,
                                                0x00E10038);
                                        NV_WR32(par->PGRAPH, 0x0754,
                                                0x00000030);
                                }
                        }

                        if ((par->Architecture < NV_ARCH_40) ||
                            ((par->Chipset & 0xfff0) == 0x0040)) {
                                for (i = 0; i < 32; i++) {
                                        NV_WR32(par->PGRAPH, 0x0900 + i*4,
                                                NV_RD32(par->PFB, 0x0240 +i*4));
                                        NV_WR32(par->PGRAPH, 0x6900 + i*4,
                                                NV_RD32(par->PFB, 0x0240 +i*4));
                                }
                        } else {
                                if (((par->Chipset & 0xfff0) == 0x0090) ||
                                    ((par->Chipset & 0xfff0) == 0x01D0) ||
                                    ((par->Chipset & 0xfff0) == 0x0290) ||
                                    ((par->Chipset & 0xfff0) == 0x0390) ||
                                    ((par->Chipset & 0xfff0) == 0x03D0)) {
                                        for (i = 0; i < 60; i++) {
                                                NV_WR32(par->PGRAPH,
                                                        0x0D00 + i*4,
                                                        NV_RD32(par->PFB,
                                                                0x0600 + i*4));
                                                NV_WR32(par->PGRAPH,
                                                        0x6900 + i*4,
                                                        NV_RD32(par->PFB,
                                                                0x0600 + i*4));
                                        }
                                } else {
                                        for (i = 0; i < 48; i++) {
                                                NV_WR32(par->PGRAPH,
                                                        0x0900 + i*4,
                                                        NV_RD32(par->PFB,
                                                                0x0600 + i*4));
                                                if(((par->Chipset & 0xfff0)
                                                    != 0x0160) &&
                                                   ((par->Chipset & 0xfff0)
                                                    != 0x0220) &&
                                                   ((par->Chipset & 0xfff0)
                                                    != 0x240))
                                                        NV_WR32(par->PGRAPH,
                                                                0x6900 + i*4,
                                                                NV_RD32(par->PFB,
                                                                        0x0600 + i*4));
                                        }
                                }
                        }

                        if (par->Architecture >= NV_ARCH_40) {
                                if ((par->Chipset & 0xfff0) == 0x0040) {
                                        NV_WR32(par->PGRAPH, 0x09A4,
                                                NV_RD32(par->PFB, 0x0200));
                                        NV_WR32(par->PGRAPH, 0x09A8,
                                                NV_RD32(par->PFB, 0x0204));
                                        NV_WR32(par->PGRAPH, 0x69A4,
                                                NV_RD32(par->PFB, 0x0200));
                                        NV_WR32(par->PGRAPH, 0x69A8,
                                                NV_RD32(par->PFB, 0x0204));

                                        NV_WR32(par->PGRAPH, 0x0820, 0);
                                        NV_WR32(par->PGRAPH, 0x0824, 0);
                                        NV_WR32(par->PGRAPH, 0x0864,
                                                par->FbMapSize - 1);
                                        NV_WR32(par->PGRAPH, 0x0868,
                                                par->FbMapSize - 1);
                                } else {
                                        if ((par->Chipset & 0xfff0) == 0x0090 ||
                                            (par->Chipset & 0xfff0) == 0x01D0 ||
                                            (par->Chipset & 0xfff0) == 0x0290 ||
                                            (par->Chipset & 0xfff0) == 0x0390) {
                                                NV_WR32(par->PGRAPH, 0x0DF0,
                                                        NV_RD32(par->PFB, 0x0200));
                                                NV_WR32(par->PGRAPH, 0x0DF4,
                                                        NV_RD32(par->PFB, 0x0204));
                                        } else {
                                                NV_WR32(par->PGRAPH, 0x09F0,
                                                        NV_RD32(par->PFB, 0x0200));
                                                NV_WR32(par->PGRAPH, 0x09F4,
                                                        NV_RD32(par->PFB, 0x0204));
                                        }
                                        NV_WR32(par->PGRAPH, 0x69F0,
                                                NV_RD32(par->PFB, 0x0200));
                                        NV_WR32(par->PGRAPH, 0x69F4,
                                                NV_RD32(par->PFB, 0x0204));

                                        NV_WR32(par->PGRAPH, 0x0840, 0);
                                        NV_WR32(par->PGRAPH, 0x0844, 0);
                                        NV_WR32(par->PGRAPH, 0x08a0,
                                                par->FbMapSize - 1);
                                        NV_WR32(par->PGRAPH, 0x08a4,
                                                par->FbMapSize - 1);
                                }
                        } else {
                                NV_WR32(par->PGRAPH, 0x09A4,
                                        NV_RD32(par->PFB, 0x0200));
                                NV_WR32(par->PGRAPH, 0x09A8,
                                        NV_RD32(par->PFB, 0x0204));
                                NV_WR32(par->PGRAPH, 0x0750, 0x00EA0000);
                                NV_WR32(par->PGRAPH, 0x0754,
                                        NV_RD32(par->PFB, 0x0200));
                                NV_WR32(par->PGRAPH, 0x0750, 0x00EA0004);
                                NV_WR32(par->PGRAPH, 0x0754,
                                        NV_RD32(par->PFB, 0x0204));

                                NV_WR32(par->PGRAPH, 0x0820, 0);
                                NV_WR32(par->PGRAPH, 0x0824, 0);
                                NV_WR32(par->PGRAPH, 0x0864,
                                        par->FbMapSize - 1);
                                NV_WR32(par->PGRAPH, 0x0868,
                                        par->FbMapSize - 1);
                        }
                        NV_WR32(par->PGRAPH, 0x0B20, 0x00000000);
                        NV_WR32(par->PGRAPH, 0x0B04, 0xFFFFFFFF);
                }
        }
        NV_WR32(par->PGRAPH, 0x053C, 0);
        NV_WR32(par->PGRAPH, 0x0540, 0);
        NV_WR32(par->PGRAPH, 0x0544, 0x00007FFF);
        NV_WR32(par->PGRAPH, 0x0548, 0x00007FFF);

        NV_WR32(par->PFIFO, 0x0140 * 4, 0x00000000);
        NV_WR32(par->PFIFO, 0x0141 * 4, 0x00000001);
        NV_WR32(par->PFIFO, 0x0480 * 4, 0x00000000);
        NV_WR32(par->PFIFO, 0x0494 * 4, 0x00000000);
        if (par->Architecture >= NV_ARCH_40)
                NV_WR32(par->PFIFO, 0x0481 * 4, 0x00010000);
        else
                NV_WR32(par->PFIFO, 0x0481 * 4, 0x00000100);
        NV_WR32(par->PFIFO, 0x0490 * 4, 0x00000000);
        NV_WR32(par->PFIFO, 0x0491 * 4, 0x00000000);
        if (par->Architecture >= NV_ARCH_40)
                NV_WR32(par->PFIFO, 0x048B * 4, 0x00001213);
        else
                NV_WR32(par->PFIFO, 0x048B * 4, 0x00001209);
        NV_WR32(par->PFIFO, 0x0400 * 4, 0x00000000);
        NV_WR32(par->PFIFO, 0x0414 * 4, 0x00000000);
        NV_WR32(par->PFIFO, 0x0084 * 4, 0x03000100);
        NV_WR32(par->PFIFO, 0x0085 * 4, 0x00000110);
        NV_WR32(par->PFIFO, 0x0086 * 4, 0x00000112);
        NV_WR32(par->PFIFO, 0x0143 * 4, 0x0000FFFF);
        NV_WR32(par->PFIFO, 0x0496 * 4, 0x0000FFFF);
        NV_WR32(par->PFIFO, 0x0050 * 4, 0x00000000);
        NV_WR32(par->PFIFO, 0x0040 * 4, 0xFFFFFFFF);
        NV_WR32(par->PFIFO, 0x0415 * 4, 0x00000001);
        NV_WR32(par->PFIFO, 0x048C * 4, 0x00000000);
        NV_WR32(par->PFIFO, 0x04A0 * 4, 0x00000000);
#ifdef __BIG_ENDIAN
        NV_WR32(par->PFIFO, 0x0489 * 4, 0x800F0078);
#else
        NV_WR32(par->PFIFO, 0x0489 * 4, 0x000F0078);
#endif
        NV_WR32(par->PFIFO, 0x0488 * 4, 0x00000001);
        NV_WR32(par->PFIFO, 0x0480 * 4, 0x00000001);
        NV_WR32(par->PFIFO, 0x0494 * 4, 0x00000001);
        NV_WR32(par->PFIFO, 0x0495 * 4, 0x00000001);
        NV_WR32(par->PFIFO, 0x0140 * 4, 0x00000001);

    if (!state) {
            par->CurrentState = NULL;
            return;
    }

        if (par->Architecture >= NV_ARCH_10) {
                if (par->twoHeads) {
                        NV_WR32(par->PCRTC0, 0x0860, state->head);
                        NV_WR32(par->PCRTC0, 0x2860, state->head2);
                }
                NV_WR32(par->PRAMDAC, 0x0404, NV_RD32(par->PRAMDAC, 0x0404) |
                        (1 << 25));

                NV_WR32(par->PMC, 0x8704, 1);
                NV_WR32(par->PMC, 0x8140, 0);
                NV_WR32(par->PMC, 0x8920, 0);
                NV_WR32(par->PMC, 0x8924, 0);
                NV_WR32(par->PMC, 0x8908, par->FbMapSize - 1);
                NV_WR32(par->PMC, 0x890C, par->FbMapSize - 1);
                NV_WR32(par->PMC, 0x1588, 0);

                NV_WR32(par->PCRTC, 0x0810, state->cursorConfig);
                NV_WR32(par->PCRTC, 0x0830, state->displayV - 3);
                NV_WR32(par->PCRTC, 0x0834, state->displayV - 1);

                if (par->FlatPanel) {
                        if ((par->Chipset & 0x0ff0) == 0x0110) {
                                NV_WR32(par->PRAMDAC, 0x0528, state->dither);
                        } else if (par->twoHeads) {
                                NV_WR32(par->PRAMDAC, 0x083C, state->dither);
                        }

                        VGA_WR08(par->PCIO, 0x03D4, 0x53);
                        VGA_WR08(par->PCIO, 0x03D5, state->timingH);
                        VGA_WR08(par->PCIO, 0x03D4, 0x54);
                        VGA_WR08(par->PCIO, 0x03D5, state->timingV);
                        VGA_WR08(par->PCIO, 0x03D4, 0x21);
                        VGA_WR08(par->PCIO, 0x03D5, 0xfa);
                }

                VGA_WR08(par->PCIO, 0x03D4, 0x41);
                VGA_WR08(par->PCIO, 0x03D5, state->extra);
        }

        VGA_WR08(par->PCIO, 0x03D4, 0x19);
        VGA_WR08(par->PCIO, 0x03D5, state->repaint0);
        VGA_WR08(par->PCIO, 0x03D4, 0x1A);
        VGA_WR08(par->PCIO, 0x03D5, state->repaint1);
        VGA_WR08(par->PCIO, 0x03D4, 0x25);
        VGA_WR08(par->PCIO, 0x03D5, state->screen);
        VGA_WR08(par->PCIO, 0x03D4, 0x28);
        VGA_WR08(par->PCIO, 0x03D5, state->pixel);
        VGA_WR08(par->PCIO, 0x03D4, 0x2D);
        VGA_WR08(par->PCIO, 0x03D5, state->horiz);
        VGA_WR08(par->PCIO, 0x03D4, 0x1C);
        VGA_WR08(par->PCIO, 0x03D5, state->fifo);
        VGA_WR08(par->PCIO, 0x03D4, 0x1B);
        VGA_WR08(par->PCIO, 0x03D5, state->arbitration0);
        VGA_WR08(par->PCIO, 0x03D4, 0x20);
        VGA_WR08(par->PCIO, 0x03D5, state->arbitration1);

        if(par->Architecture >= NV_ARCH_30) {
                VGA_WR08(par->PCIO, 0x03D4, 0x47);
                VGA_WR08(par->PCIO, 0x03D5, state->arbitration1 >> 8);
        }

        VGA_WR08(par->PCIO, 0x03D4, 0x30);
        VGA_WR08(par->PCIO, 0x03D5, state->cursor0);
        VGA_WR08(par->PCIO, 0x03D4, 0x31);
        VGA_WR08(par->PCIO, 0x03D5, state->cursor1);
        VGA_WR08(par->PCIO, 0x03D4, 0x2F);
        VGA_WR08(par->PCIO, 0x03D5, state->cursor2);
        VGA_WR08(par->PCIO, 0x03D4, 0x39);
        VGA_WR08(par->PCIO, 0x03D5, state->interlace);

        if (!par->FlatPanel) {
                if (par->Architecture >= NV_ARCH_40)
                        NV_WR32(par->PRAMDAC0, 0x0580, state->control);

                NV_WR32(par->PRAMDAC0, 0x050C, state->pllsel);
                NV_WR32(par->PRAMDAC0, 0x0508, state->vpll);
                if (par->twoHeads)
                        NV_WR32(par->PRAMDAC0, 0x0520, state->vpll2);
                if (par->twoStagePLL) {
                        NV_WR32(par->PRAMDAC0, 0x0578, state->vpllB);
                        NV_WR32(par->PRAMDAC0, 0x057C, state->vpll2B);
                }
        } else {
                NV_WR32(par->PRAMDAC, 0x0848, state->scale);
                NV_WR32(par->PRAMDAC, 0x0828, state->crtcSync +
                        par->PanelTweak);
        }

        NV_WR32(par->PRAMDAC, 0x0600, state->general);

        NV_WR32(par->PCRTC, 0x0140, 0);
        NV_WR32(par->PCRTC, 0x0100, 1);

        par->CurrentState = state;
}

void NVUnloadStateExt(struct nvidia_par *par, RIVA_HW_STATE * state) {
        VGA_WR08(par->PCIO, 0x03D4, 0x19);
        state->repaint0 = VGA_RD08(par->PCIO, 0x03D5);
        VGA_WR08(par->PCIO, 0x03D4, 0x1A);
        state->repaint1 = VGA_RD08(par->PCIO, 0x03D5);
        VGA_WR08(par->PCIO, 0x03D4, 0x25);
        state->screen = VGA_RD08(par->PCIO, 0x03D5);
        VGA_WR08(par->PCIO, 0x03D4, 0x28);
        state->pixel = VGA_RD08(par->PCIO, 0x03D5);
        VGA_WR08(par->PCIO, 0x03D4, 0x2D);
        state->horiz = VGA_RD08(par->PCIO, 0x03D5);
        VGA_WR08(par->PCIO, 0x03D4, 0x1C);
        state->fifo         = VGA_RD08(par->PCIO, 0x03D5);
        VGA_WR08(par->PCIO, 0x03D4, 0x1B);
        state->arbitration0 = VGA_RD08(par->PCIO, 0x03D5);
        VGA_WR08(par->PCIO, 0x03D4, 0x20);
        state->arbitration1 = VGA_RD08(par->PCIO, 0x03D5);

        if(par->Architecture >= NV_ARCH_30) {
                VGA_WR08(par->PCIO, 0x03D4, 0x47);
                state->arbitration1 |= (VGA_RD08(par->PCIO, 0x03D5) & 1) << 8;
        }

        VGA_WR08(par->PCIO, 0x03D4, 0x30);
        state->cursor0 = VGA_RD08(par->PCIO, 0x03D5);
        VGA_WR08(par->PCIO, 0x03D4, 0x31);
        state->cursor1 = VGA_RD08(par->PCIO, 0x03D5);
        VGA_WR08(par->PCIO, 0x03D4, 0x2F);
        state->cursor2 = VGA_RD08(par->PCIO, 0x03D5);
        VGA_WR08(par->PCIO, 0x03D4, 0x39);
        state->interlace = VGA_RD08(par->PCIO, 0x03D5);
        state->vpll = NV_RD32(par->PRAMDAC0, 0x0508);
        if (par->twoHeads)
                state->vpll2 = NV_RD32(par->PRAMDAC0, 0x0520);
        if (par->twoStagePLL) {
                state->vpllB = NV_RD32(par->PRAMDAC0, 0x0578);
                state->vpll2B = NV_RD32(par->PRAMDAC0, 0x057C);
        }
        state->pllsel = NV_RD32(par->PRAMDAC0, 0x050C);
        state->general = NV_RD32(par->PRAMDAC, 0x0600);
        state->scale = NV_RD32(par->PRAMDAC, 0x0848);
        state->config = NV_RD32(par->PFB, 0x0200);

        if (par->Architecture >= NV_ARCH_40 && !par->FlatPanel)
                state->control  = NV_RD32(par->PRAMDAC0, 0x0580);

        if (par->Architecture >= NV_ARCH_10) {
                if (par->twoHeads) {
                        state->head = NV_RD32(par->PCRTC0, 0x0860);
                        state->head2 = NV_RD32(par->PCRTC0, 0x2860);
                        VGA_WR08(par->PCIO, 0x03D4, 0x44);
                        state->crtcOwner = VGA_RD08(par->PCIO, 0x03D5);
                }
                VGA_WR08(par->PCIO, 0x03D4, 0x41);
                state->extra = VGA_RD08(par->PCIO, 0x03D5);
                state->cursorConfig = NV_RD32(par->PCRTC, 0x0810);

                if ((par->Chipset & 0x0ff0) == 0x0110) {
                        state->dither = NV_RD32(par->PRAMDAC, 0x0528);
                } else if (par->twoHeads) {
                        state->dither = NV_RD32(par->PRAMDAC, 0x083C);
                }

                if (par->FlatPanel) {
                        VGA_WR08(par->PCIO, 0x03D4, 0x53);
                        state->timingH = VGA_RD08(par->PCIO, 0x03D5);
                        VGA_WR08(par->PCIO, 0x03D4, 0x54);
                        state->timingV = VGA_RD08(par->PCIO, 0x03D5);
                }
        }
}

void NVSetStartAddress(struct nvidia_par *par, u32 start)
{
        NV_WR32(par->PCRTC, 0x800, start);
}