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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [video/] [riva/] [fbdev.c] - Blame information for rev 1780

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/*
 * linux/drivers/video/riva/fbdev.c
 *
 * nVidia RIVA 128/TNT/TNT2/GeForce2/3 fb driver
 *
 * Maintained by Ani Joshi <ajoshi@kernel.crashing.org>
 *
 * Copyright 1999-2000 Jeff Garzik
 * Copyright 2000-2003 Ani Joshi
 *
 * Contributors:
 *
 *      Ani Joshi:  Lots of debugging and cleanup work, really helped
 *      get the driver going
 *
 *      Ferenc Bakonyi:  Bug fixes, cleanup, modularization
 *
 *      Jindrich Makovicka:  Accel code help, hw cursor, mtrr
 *
 * Initial template from skeletonfb.c, created 28 Dec 1997 by Geert Uytterhoeven
 * Includes riva_hw.c from nVidia, see copyright below.
 * KGI code provided the basis for state storage, init, and mode switching.
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file COPYING in the main directory of this archive
 * for more details.
 *
 * Known bugs and issues:
 *      restoring text mode fails
 *      doublescan modes are broken
 *      option 'noaccel' has no effect
 */
 
#include <linux/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/selection.h>
#include <linux/tty.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/fb.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/console.h>
#ifdef CONFIG_MTRR
#include <asm/mtrr.h>
#endif
#include "rivafb.h"
#include "nvreg.h"
 
#ifndef CONFIG_PCI              /* sanity check */
#error This driver requires PCI support.
#endif
 
 
 
/* version number of this driver */
#define RIVAFB_VERSION "0.9.4"
 
 
 
/* ------------------------------------------------------------------------- *
 *
 * various helpful macros and constants
 *
 * ------------------------------------------------------------------------- */
 
#undef RIVAFBDEBUG
#ifdef RIVAFBDEBUG
#define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __FUNCTION__ , ## args)
#else
#define DPRINTK(fmt, args...)
#endif
 
#ifndef RIVA_NDEBUG
#define assert(expr) \
        if(!(expr)) { \
        printk( "Assertion failed! %s,%s,%s,line=%d\n",\
        #expr,__FILE__,__FUNCTION__,__LINE__); \
        BUG(); \
        }
#else
#define assert(expr)
#endif
 
#define PFX "rivafb: "
 
/* macro that allows you to set overflow bits */
#define SetBitField(value,from,to) SetBF(to,GetBF(value,from))
#define SetBit(n)               (1<<(n))
#define Set8Bits(value)         ((value)&0xff)
 
/* HW cursor parameters */
#define DEFAULT_CURSOR_BLINK_RATE       (40)
#define CURSOR_HIDE_DELAY               (20)
#define CURSOR_SHOW_DELAY               (3)
 
#ifdef __BIG_ENDIAN
#define CURSOR_COLOR            0xff7f
#else
#define CURSOR_COLOR            0x7fff
#endif
#define TRANSPARENT_COLOR       0x0000
#define MAX_CURS                32
 
 
 
/* ------------------------------------------------------------------------- *
 *
 * prototypes
 *
 * ------------------------------------------------------------------------- */
 
static void rivafb_blank(int blank, struct fb_info *info);
 
extern void riva_setup_accel(struct rivafb_info *rinfo);
extern inline void wait_for_idle(struct rivafb_info *rinfo);
 
 
 
/* ------------------------------------------------------------------------- *
 *
 * card identification
 *
 * ------------------------------------------------------------------------- */
 
enum riva_chips {
        CH_RIVA_128 = 0,
        CH_RIVA_TNT,
        CH_RIVA_TNT2,
        CH_RIVA_UTNT2,  /* UTNT2 */
        CH_RIVA_VTNT2,  /* VTNT2 */
        CH_RIVA_UVTNT2, /* VTNT2 */
        CH_RIVA_ITNT2,  /* ITNT2 */
        CH_GEFORCE_SDR,
        CH_GEFORCE_DDR,
        CH_QUADRO,
        CH_GEFORCE2_MX,
        CH_QUADRO2_MXR,
        CH_GEFORCE2_GTS,
        CH_GEFORCE2_ULTRA,
        CH_QUADRO2_PRO,
        CH_GEFORCE2_GO,
        CH_GEFORCE3,
        CH_GEFORCE3_1,
        CH_GEFORCE3_2,
        CH_QUADRO_DDC
};
 
/* directly indexed by riva_chips enum, above */
static struct riva_chip_info {
        const char *name;
        unsigned arch_rev;
} riva_chip_info[] __devinitdata = {
        { "RIVA-128", NV_ARCH_03 },
        { "RIVA-TNT", NV_ARCH_04 },
        { "RIVA-TNT2", NV_ARCH_04 },
        { "RIVA-UTNT2", NV_ARCH_04 },
        { "RIVA-VTNT2", NV_ARCH_04 },
        { "RIVA-UVTNT2", NV_ARCH_04 },
        { "RIVA-ITNT2", NV_ARCH_04 },
        { "GeForce-SDR", NV_ARCH_10},
        { "GeForce-DDR", NV_ARCH_10},
        { "Quadro", NV_ARCH_10},
        { "GeForce2-MX", NV_ARCH_10},
        { "Quadro2-MXR", NV_ARCH_10},
        { "GeForce2-GTS", NV_ARCH_10},
        { "GeForce2-ULTRA", NV_ARCH_10},
        { "Quadro2-PRO", NV_ARCH_10},
        { "GeForce2-Go", NV_ARCH_10},
        { "GeForce3", NV_ARCH_20},
        { "GeForce3 Ti 200", NV_ARCH_20},
        { "GeForce3 Ti 500", NV_ARCH_20},
        { "Quadro DDC", NV_ARCH_20}
};
 
static struct pci_device_id rivafb_pci_tbl[] __devinitdata = {
        { PCI_VENDOR_ID_NVIDIA_SGS, PCI_DEVICE_ID_NVIDIA_SGS_RIVA128,
          PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_RIVA_128 },
        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_TNT,
          PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_RIVA_TNT },
        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_TNT2,
          PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_RIVA_TNT2 },
        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_UTNT2,
          PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_RIVA_UTNT2 },
        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_VTNT2,
          PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_RIVA_VTNT2 },
        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_UVTNT2,
          PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_RIVA_VTNT2 },
        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_ITNT2,
          PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_RIVA_ITNT2 },
        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_GEFORCE_SDR,
          PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_GEFORCE_SDR },
        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_GEFORCE_DDR,
          PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_GEFORCE_DDR },
        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_QUADRO,
          PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_QUADRO },
        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_GEFORCE2_MX,
          PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_GEFORCE2_MX },
        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_GEFORCE2_MX2,
          PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_GEFORCE2_MX },
        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_QUADRO2_MXR,
          PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_QUADRO2_MXR },
        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_GEFORCE2_GTS,
          PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_GEFORCE2_GTS },
        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_GEFORCE2_GTS2,
          PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_GEFORCE2_GTS },
        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_GEFORCE2_ULTRA,
          PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_GEFORCE2_ULTRA },
        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_QUADRO2_PRO,
          PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_QUADRO2_PRO },
        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_GEFORCE2_GO,
          PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_GEFORCE2_GO },
        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_GEFORCE3,
          PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_GEFORCE3 },
        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_GEFORCE3_1,
          PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_GEFORCE3_1 },
        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_GEFORCE3_2,
          PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_GEFORCE3_2 },
        { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_QUADRO_DDC,
          PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_QUADRO_DDC },
        { 0, } /* terminate list */
};
MODULE_DEVICE_TABLE(pci, rivafb_pci_tbl);
 
 
 
/* ------------------------------------------------------------------------- *
 *
 * framebuffer related structures
 *
 * ------------------------------------------------------------------------- */
 
#ifdef FBCON_HAS_CFB8
extern struct display_switch fbcon_riva8;
#endif
#ifdef FBCON_HAS_CFB16
extern struct display_switch fbcon_riva16;
#endif
#ifdef FBCON_HAS_CFB32
extern struct display_switch fbcon_riva32;
#endif
 
#if 0
/* describes the state of a Riva board */
struct rivafb_par {
        struct riva_regs state; /* state of hw board */
        __u32 visual;           /* FB_VISUAL_xxx */
        unsigned depth;         /* bpp of current mode */
};
#endif
 
struct riva_cursor {
        int enable;
        int on;
        int vbl_cnt;
        int last_move_delay;
        int blink_rate;
        struct {
                u16 x, y;
        } pos, size;
        unsigned short image[MAX_CURS*MAX_CURS];
        struct timer_list *timer;
};
 
 
 
/* ------------------------------------------------------------------------- *
 *
 * global variables
 *
 * ------------------------------------------------------------------------- */
 
struct rivafb_info *riva_boards = NULL;
 
/* command line data, set in rivafb_setup() */
static char fontname[40] __initdata = { 0 };
static char noaccel __initdata = 0;
static char nomove = 0;
static char nohwcursor __initdata = 0;
static char noblink = 0;
#ifdef CONFIG_MTRR
static char nomtrr __initdata = 0;
#endif
 
#ifndef MODULE
static char *mode_option __initdata = NULL;
#else
static char *font = NULL;
#endif
 
static struct fb_var_screeninfo rivafb_default_var = {
        xres:           640,
        yres:           480,
        xres_virtual:   640,
        yres_virtual:   480,
        xoffset:        0,
        yoffset:        0,
        bits_per_pixel: 8,
        grayscale:      0,
        red:            {0, 6, 0},
        green:          {0, 6, 0},
        blue:           {0, 6, 0},
        transp:         {0, 0, 0},
        nonstd:         0,
        activate:       0,
        height:         -1,
        width:          -1,
        accel_flags:    0,
        pixclock:       39721,
        left_margin:    40,
        right_margin:   24,
        upper_margin:   32,
        lower_margin:   11,
        hsync_len:      96,
        vsync_len:      2,
        sync:           0,
        vmode:          FB_VMODE_NONINTERLACED
};
 
/* from GGI */
static const struct riva_regs reg_template = {
        {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,        /* ATTR */
         0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
         0x41, 0x01, 0x0F, 0x00, 0x00},
        {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,        /* CRT  */
         0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00,
         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xE3,        /* 0x10 */
         0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,        /* 0x20 */
         0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,        /* 0x30 */
         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
         0x00,                                                  /* 0x40 */
         },
        {0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x05, 0x0F,        /* GRA  */
         0xFF},
        {0x03, 0x01, 0x0F, 0x00, 0x0E},                         /* SEQ  */
        0xEB                                                    /* MISC */
};
 
 
 
/* ------------------------------------------------------------------------- *
 *
 * MMIO access macros
 *
 * ------------------------------------------------------------------------- */
 
static inline void CRTCout(struct rivafb_info *rinfo, unsigned char index,
                           unsigned char val)
{
        VGA_WR08(rinfo->riva.PCIO, 0x3d4, index);
        VGA_WR08(rinfo->riva.PCIO, 0x3d5, val);
}
 
static inline unsigned char CRTCin(struct rivafb_info *rinfo,
                                   unsigned char index)
{
        VGA_WR08(rinfo->riva.PCIO, 0x3d4, index);
        return (VGA_RD08(rinfo->riva.PCIO, 0x3d5));
}
 
static inline void GRAout(struct rivafb_info *rinfo, unsigned char index,
                          unsigned char val)
{
        VGA_WR08(rinfo->riva.PVIO, 0x3ce, index);
        VGA_WR08(rinfo->riva.PVIO, 0x3cf, val);
}
 
static inline unsigned char GRAin(struct rivafb_info *rinfo,
                                  unsigned char index)
{
        VGA_WR08(rinfo->riva.PVIO, 0x3ce, index);
        return (VGA_RD08(rinfo->riva.PVIO, 0x3cf));
}
 
static inline void SEQout(struct rivafb_info *rinfo, unsigned char index,
                          unsigned char val)
{
        VGA_WR08(rinfo->riva.PVIO, 0x3c4, index);
        VGA_WR08(rinfo->riva.PVIO, 0x3c5, val);
}
 
static inline unsigned char SEQin(struct rivafb_info *rinfo,
                                  unsigned char index)
{
        VGA_WR08(rinfo->riva.PVIO, 0x3c4, index);
        return (VGA_RD08(rinfo->riva.PVIO, 0x3c5));
}
 
static inline void ATTRout(struct rivafb_info *rinfo, unsigned char index,
                           unsigned char val)
{
        VGA_WR08(rinfo->riva.PCIO, 0x3c0, index);
        VGA_WR08(rinfo->riva.PCIO, 0x3c0, val);
}
 
static inline unsigned char ATTRin(struct rivafb_info *rinfo,
                                   unsigned char index)
{
        VGA_WR08(rinfo->riva.PCIO, 0x3c0, index);
        return (VGA_RD08(rinfo->riva.PCIO, 0x3c1));
}
 
static inline void MISCout(struct rivafb_info *rinfo, unsigned char val)
{
        VGA_WR08(rinfo->riva.PVIO, 0x3c2, val);
}
 
static inline unsigned char MISCin(struct rivafb_info *rinfo)
{
        return (VGA_RD08(rinfo->riva.PVIO, 0x3cc));
}
 
 
 
/* ------------------------------------------------------------------------- *
 *
 * cursor stuff
 *
 * ------------------------------------------------------------------------- */
 
/**
 * riva_cursor_timer_handler - blink timer
 * @dev_addr: pointer to rivafb_info object containing info for current riva board
 *
 * DESCRIPTION:
 * Cursor blink timer.
 */
static void riva_cursor_timer_handler(unsigned long dev_addr)
{
        struct rivafb_info *rinfo = (struct rivafb_info *)dev_addr;
 
        if (!rinfo->cursor) return;
 
        if (!rinfo->cursor->enable) goto out;
 
        if (rinfo->cursor->last_move_delay < 1000)
                rinfo->cursor->last_move_delay++;
 
        if (rinfo->cursor->vbl_cnt && --rinfo->cursor->vbl_cnt == 0) {
                rinfo->cursor->on ^= 1;
                if (rinfo->cursor->on)
                        *(rinfo->riva.CURSORPOS) = (rinfo->cursor->pos.x & 0xFFFF)
                                                   | (rinfo->cursor->pos.y << 16);
                rinfo->riva.ShowHideCursor(&rinfo->riva, rinfo->cursor->on);
                if (!noblink)
                        rinfo->cursor->vbl_cnt = rinfo->cursor->blink_rate;
        }
out:
        rinfo->cursor->timer->expires = jiffies + (HZ / 100);
        add_timer(rinfo->cursor->timer);
}
 
/**
 * rivafb_init_cursor - allocates cursor structure and starts blink timer
 * @rinfo: pointer to rivafb_info object containing info for current riva board
 *
 * DESCRIPTION:
 * Allocates cursor structure and starts blink timer.
 *
 * RETURNS:
 * Pointer to allocated cursor structure.
 *
 * CALLED FROM:
 * rivafb_init_one()
 */
static struct riva_cursor * __init rivafb_init_cursor(struct rivafb_info *rinfo)
{
        struct riva_cursor *cursor;
 
        cursor = kmalloc(sizeof(struct riva_cursor), GFP_KERNEL);
        if (!cursor) return 0;
        memset(cursor, 0, sizeof(*cursor));
 
        cursor->timer = kmalloc(sizeof(*cursor->timer), GFP_KERNEL);
        if (!cursor->timer) {
                kfree(cursor);
                return 0;
        }
        memset(cursor->timer, 0, sizeof(*cursor->timer));
 
        cursor->blink_rate = DEFAULT_CURSOR_BLINK_RATE;
 
        init_timer(cursor->timer);
        cursor->timer->expires = jiffies + (HZ / 100);
        cursor->timer->data = (unsigned long)rinfo;
        cursor->timer->function = riva_cursor_timer_handler;
        add_timer(cursor->timer);
 
        return cursor;
}
 
/**
 * rivafb_exit_cursor - stops blink timer and releases cursor structure
 * @rinfo: pointer to rivafb_info object containing info for current riva board
 *
 * DESCRIPTION:
 * Stops blink timer and releases cursor structure.
 *
 * CALLED FROM:
 * rivafb_init_one()
 * rivafb_remove_one()
 */
static void rivafb_exit_cursor(struct rivafb_info *rinfo)
{
        struct riva_cursor *cursor = rinfo->cursor;
 
        if (cursor) {
                if (cursor->timer) {
                        del_timer_sync(cursor->timer);
                        kfree(cursor->timer);
                }
                kfree(cursor);
                rinfo->cursor = 0;
        }
}
 
/**
 * rivafb_download_cursor - writes cursor shape into card registers
 * @rinfo: pointer to rivafb_info object containing info for current riva board
 *
 * DESCRIPTION:
 * Writes cursor shape into card registers.
 *
 * CALLED FROM:
 * riva_load_video_mode()
 */
static void rivafb_download_cursor(struct rivafb_info *rinfo)
{
        int i, save;
        int *image;
 
        if (!rinfo->cursor) return;
 
        image = (int *)rinfo->cursor->image;
        save = rinfo->riva.ShowHideCursor(&rinfo->riva, 0);
        for (i = 0; i < (MAX_CURS*MAX_CURS*2)/sizeof(int); i++)
                writel(image[i], rinfo->riva.CURSOR + i);
 
        rinfo->riva.ShowHideCursor(&rinfo->riva, save);
}
 
/**
 * rivafb_create_cursor - sets rectangular cursor
 * @rinfo: pointer to rivafb_info object containing info for current riva board
 * @width: cursor width in pixels
 * @height: cursor height in pixels
 *
 * DESCRIPTION:
 * Sets rectangular cursor.
 *
 * CALLED FROM:
 * rivafb_set_font()
 * rivafb_set_var()
 */
static void rivafb_create_cursor(struct rivafb_info *rinfo, int width, int height)
{
        struct riva_cursor *c = rinfo->cursor;
        int i, j, idx;
 
        if (c) {
                if (width <= 0 || height <= 0) {
                        width = 8;
                        height = 16;
                }
                if (width > MAX_CURS) width = MAX_CURS;
                if (height > MAX_CURS) height = MAX_CURS;
 
                c->size.x = width;
                c->size.y = height;
 
                idx = 0;
 
                for (i = 0; i < height; i++) {
                        for (j = 0; j < width; j++,idx++)
                                c->image[idx] = CURSOR_COLOR;
                        for (j = width; j < MAX_CURS; j++,idx++)
                                c->image[idx] = TRANSPARENT_COLOR;
                }
                for (i = height; i < MAX_CURS; i++)
                        for (j = 0; j < MAX_CURS; j++,idx++)
                                c->image[idx] = TRANSPARENT_COLOR;
        }
}
 
/**
 * rivafb_set_font - change font size
 * @p: pointer to display object
 * @width: font width in pixels
 * @height: font height in pixels
 *
 * DESCRIPTION:
 * Callback function called if font settings changed.
 *
 * RETURNS:
 * 1 (Always succeeds.)
 */
static int rivafb_set_font(struct display *p, int width, int height)
{
        struct rivafb_info *fb = (struct rivafb_info *)(p->fb_info);
 
        rivafb_create_cursor(fb, width, height);
        return 1;
}
 
/**
 * rivafb_cursor - cursor handler
 * @p: pointer to display object
 * @mode: cursor mode (see CM_*)
 * @x: cursor x coordinate in characters
 * @y: cursor y coordinate in characters
 *
 * DESCRIPTION:
 * Cursor handler.
 */
static void rivafb_cursor(struct display *p, int mode, int x, int y)
{
        struct rivafb_info *rinfo = (struct rivafb_info *)(p->fb_info);
        struct riva_cursor *c = rinfo->cursor;
 
        if (!c) return;
 
        x = x * fontwidth(p) - p->var.xoffset;
        y = y * fontheight(p) - p->var.yoffset;
 
        if (c->pos.x == x && c->pos.y == y && (mode == CM_ERASE) == !c->enable)
                return;
 
        c->enable = 0;
        if (c->on) rinfo->riva.ShowHideCursor(&rinfo->riva, 0);
 
        c->pos.x = x;
        c->pos.y = y;
 
        switch (mode) {
        case CM_ERASE:
                c->on = 0;
                break;
        case CM_DRAW:
        case CM_MOVE:
                if (c->last_move_delay <= 1) { /* rapid cursor movement */
                        c->vbl_cnt = CURSOR_SHOW_DELAY;
                } else {
                        *(rinfo->riva.CURSORPOS) = (x & 0xFFFF) | (y << 16);
                        rinfo->riva.ShowHideCursor(&rinfo->riva, 1);
                        if (!noblink) c->vbl_cnt = CURSOR_HIDE_DELAY;
                        c->on = 1;
                }
                c->last_move_delay = 0;
                c->enable = 1;
                break;
        }
}
 
 
 
/* ------------------------------------------------------------------------- *
 *
 * general utility functions
 *
 * ------------------------------------------------------------------------- */
 
/**
 * riva_set_dispsw - sets dispsw
 * @rinfo: pointer to internal driver struct for a given Riva card
 * @disp: pointer to display object
 *
 * DESCRIPTION:
 * Sets up console low level operations depending on the current? color depth
 * of the display.
 *
 * CALLED FROM:
 * rivafb_set_var()
 * rivafb_switch()
 * riva_init_disp()
 */
static void riva_set_dispsw(struct rivafb_info *rinfo, struct display *disp)
{
        int accel = disp->var.accel_flags & FB_ACCELF_TEXT;
 
        DPRINTK("ENTER\n");
 
        assert(rinfo != NULL);
 
        disp->dispsw_data = NULL;
 
        disp->screen_base = rinfo->fb_base;
        disp->type = FB_TYPE_PACKED_PIXELS;
        disp->type_aux = 0;
        disp->ypanstep = 1;
        disp->ywrapstep = 0;
        disp->can_soft_blank = 1;
        disp->inverse = 0;
 
        switch (disp->var.bits_per_pixel) {
#ifdef FBCON_HAS_CFB8
        case 8:
                rinfo->dispsw = accel ? fbcon_riva8 : fbcon_cfb8;
                disp->dispsw = &rinfo->dispsw;
                disp->line_length = disp->var.xres_virtual;
                disp->visual = FB_VISUAL_PSEUDOCOLOR;
                break;
#endif
#ifdef FBCON_HAS_CFB16
        case 16:
                rinfo->dispsw = accel ? fbcon_riva16 : fbcon_cfb16;
                disp->dispsw_data = &rinfo->con_cmap.cfb16;
                disp->dispsw = &rinfo->dispsw;
                disp->line_length = disp->var.xres_virtual * 2;
                disp->visual = FB_VISUAL_DIRECTCOLOR;
                break;
#endif
#ifdef FBCON_HAS_CFB32
        case 32:
                rinfo->dispsw = accel ? fbcon_riva32 : fbcon_cfb32;
                disp->dispsw_data = rinfo->con_cmap.cfb32;
                disp->dispsw = &rinfo->dispsw;
                disp->line_length = disp->var.xres_virtual * 4;
                disp->visual = FB_VISUAL_DIRECTCOLOR;
                break;
#endif
        default:
                DPRINTK("Setting fbcon_dummy renderer\n");
                rinfo->dispsw = fbcon_dummy;
                disp->dispsw = &rinfo->dispsw;
        }
 
        /* FIXME: verify that the above code sets dsp->* fields correctly */
 
        if (rinfo->cursor) {
                rinfo->dispsw.cursor = rivafb_cursor;
                rinfo->dispsw.set_font = rivafb_set_font;
        }
 
        DPRINTK("EXIT\n");
}
 
/**
 * riva_wclut - set CLUT entry
 * @chip: pointer to RIVA_HW_INST object
 * @regnum: register number
 * @red: red component
 * @green: green component
 * @blue: blue component
 *
 * DESCRIPTION:
 * Sets color register @regnum.
 *
 * CALLED FROM:
 * riva_setcolreg()
 */
static void riva_wclut(RIVA_HW_INST *chip,
                       unsigned char regnum, unsigned char red,
                       unsigned char green, unsigned char blue)
{
        VGA_WR08(chip->PDIO, 0x3c8, regnum);
        VGA_WR08(chip->PDIO, 0x3c9, red);
        VGA_WR08(chip->PDIO, 0x3c9, green);
        VGA_WR08(chip->PDIO, 0x3c9, blue);
}
 
/**
 * riva_save_state - saves current chip state
 * @rinfo: pointer to rivafb_info object containing info for current riva board
 * @regs: pointer to riva_regs object
 *
 * DESCRIPTION:
 * Saves current chip state to @regs.
 *
 * CALLED FROM:
 * rivafb_init_one()
 */
/* from GGI */
static void riva_save_state(struct rivafb_info *rinfo, struct riva_regs *regs)
{
        int i;
 
        rinfo->riva.LockUnlock(&rinfo->riva, 0);
 
        rinfo->riva.UnloadStateExt(&rinfo->riva, &regs->ext);
 
        regs->misc_output = MISCin(rinfo);
 
        for (i = 0; i < NUM_CRT_REGS; i++) {
                regs->crtc[i] = CRTCin(rinfo, i);
        }
 
        for (i = 0; i < NUM_ATC_REGS; i++) {
                regs->attr[i] = ATTRin(rinfo, i);
        }
 
        for (i = 0; i < NUM_GRC_REGS; i++) {
                regs->gra[i] = GRAin(rinfo, i);
        }
 
        for (i = 0; i < NUM_SEQ_REGS; i++) {
                regs->seq[i] = SEQin(rinfo, i);
        }
}
 
/**
 * riva_load_state - loads current chip state
 * @rinfo: pointer to rivafb_info object containing info for current riva board
 * @regs: pointer to riva_regs object
 *
 * DESCRIPTION:
 * Loads chip state from @regs.
 *
 * CALLED FROM:
 * riva_load_video_mode()
 * rivafb_init_one()
 * rivafb_remove_one()
 */
/* from GGI */
static void riva_load_state(struct rivafb_info *rinfo, struct riva_regs *regs)
{
        int i;
        RIVA_HW_STATE *state = &regs->ext;
 
        CRTCout(rinfo, 0x11, 0x00);
 
        rinfo->riva.LockUnlock(&rinfo->riva, 0);
 
        rinfo->riva.LoadStateExt(&rinfo->riva, state);
 
        MISCout(rinfo, regs->misc_output);
 
        for (i = 0; i < NUM_CRT_REGS; i++) {
                switch (i) {
                case 0x19:
                case 0x20 ... 0x40:
                        break;
                default:
                        CRTCout(rinfo, i, regs->crtc[i]);
                }
        }
 
        for (i = 0; i < NUM_ATC_REGS; i++) {
                ATTRout(rinfo, i, regs->attr[i]);
        }
 
        for (i = 0; i < NUM_GRC_REGS; i++) {
                GRAout(rinfo, i, regs->gra[i]);
        }
 
        for (i = 0; i < NUM_SEQ_REGS; i++) {
                SEQout(rinfo, i, regs->seq[i]);
        }
}
 
/**
 * riva_load_video_mode - calculate timings
 * @rinfo: pointer to rivafb_info object containing info for current riva board
 * @video_mode: video mode to set
 *
 * DESCRIPTION:
 * Calculate some timings and then send em off to riva_load_state().
 *
 * CALLED FROM:
 * rivafb_set_var()
 */
static void riva_load_video_mode(struct rivafb_info *rinfo,
                                 struct fb_var_screeninfo *video_mode)
{
        struct riva_regs newmode;
        int bpp, width, hDisplaySize, hDisplay, hStart,
            hEnd, hTotal, height, vDisplay, vStart, vEnd, vTotal, dotClock;
        int hBlankStart, hBlankEnd, vBlankStart, vBlankEnd;
 
        /* time to calculate */
 
        rivafb_blank(1, (struct fb_info *)rinfo);
 
        bpp = video_mode->bits_per_pixel;
        if (bpp == 16 && video_mode->green.length == 5)
                bpp = 15;
        width = video_mode->xres_virtual;
        hDisplaySize = video_mode->xres;
        hDisplay = (hDisplaySize / 8) - 1;
        hStart = (hDisplaySize + video_mode->right_margin) / 8 + 2;
        hEnd = (hDisplaySize + video_mode->right_margin +
                video_mode->hsync_len) / 8 - 1;
        hTotal = (hDisplaySize + video_mode->right_margin +
                  video_mode->hsync_len + video_mode->left_margin) / 8 - 1;
        hBlankStart = hDisplay;
        hBlankEnd = hTotal;
        height = video_mode->yres_virtual;
        vDisplay = video_mode->yres - 1;
        vStart = video_mode->yres + video_mode->lower_margin - 1;
        vEnd = video_mode->yres + video_mode->lower_margin +
               video_mode->vsync_len - 1;
        vTotal = video_mode->yres + video_mode->lower_margin +
                 video_mode->vsync_len + video_mode->upper_margin + 2;
        vBlankStart = vDisplay;
        vBlankEnd = vTotal;
        dotClock = 1000000000 / video_mode->pixclock;
 
        memcpy(&newmode, &reg_template, sizeof(struct riva_regs));
 
        newmode.ext.screen = SetBitField(hBlankEnd,6:6,4:4)
                  | SetBitField(vBlankStart,10:10,3:3)
                  | SetBitField(vStart,10:10,2:2)
                  | SetBitField(vDisplay,10:10,1:1)
                  | SetBitField(vTotal,10:10,0:0);
 
        newmode.ext.horiz  = SetBitField(hTotal,8:8,0:0)
                  | SetBitField(hDisplay,8:8,1:1)
                  | SetBitField(hBlankStart,8:8,2:2)
                  | SetBitField(hStart,8:8,3:3);
 
        newmode.ext.extra  = SetBitField(vTotal,11:11,0:0)
                    | SetBitField(vDisplay,11:11,2:2)
                    | SetBitField(vStart,11:11,4:4)
                    | SetBitField(vBlankStart,11:11,6:6);
 
        if (rinfo->riva.flatPanel) {
                vStart = vTotal - 3;
                vEnd = vTotal - 2;
                vBlankStart = vStart;
                hStart = hTotal - 3;
                hEnd = hTotal - 2;
                hBlankEnd = hTotal + 4;
        }
 
        newmode.crtc[0x0] = Set8Bits (hTotal - 4);
        newmode.crtc[0x1] = Set8Bits (hDisplay);
        newmode.crtc[0x2] = Set8Bits (hBlankStart);
        newmode.crtc[0x3] = SetBitField(hBlankEnd,4:0,4:0)
                | SetBit(7);
        newmode.crtc[0x4] = Set8Bits (hStart);
        newmode.crtc[0x5] = SetBitField (hBlankEnd, 5: 5, 7:7)
                | SetBitField (hEnd, 4: 0, 4:0);
        newmode.crtc[0x6] = SetBitField (vTotal, 7: 0, 7:0);
        newmode.crtc[0x7] = SetBitField (vTotal, 8: 8, 0:0)
                | SetBitField (vDisplay, 8: 8, 1:1)
                | SetBitField (vStart, 8: 8, 2:2)
                | SetBitField (vBlankStart, 8: 8, 3:3)
                | SetBit (4)
                | SetBitField (vTotal, 9: 9, 5:5)
                | SetBitField (vDisplay, 9: 9, 6:6)
                | SetBitField (vStart, 9: 9, 7:7);
        newmode.crtc[0x9] = SetBitField (vBlankStart, 9: 9, 5:5)
                | SetBit (6);
        newmode.crtc[0x10] = Set8Bits (vStart);
        newmode.crtc[0x11] = SetBitField (vEnd, 3: 0, 3:0)
                | SetBit (5);
        newmode.crtc[0x12] = Set8Bits (vDisplay);
        newmode.crtc[0x13] = ((width / 8) * ((bpp + 1) / 8)) & 0xFF;
        newmode.crtc[0x15] = Set8Bits (vBlankStart);
        newmode.crtc[0x16] = Set8Bits (vBlankEnd);
 
        newmode.ext.bpp = bpp;
        newmode.ext.width = width;
        newmode.ext.height = height;
 
        rinfo->riva.CalcStateExt(&rinfo->riva, &newmode.ext, bpp, width,
                                  hDisplaySize, hDisplay, hStart, hEnd,
                                  hTotal, height, vDisplay, vStart, vEnd,
                                  vTotal, dotClock);
 
        newmode.ext.scale = rinfo->riva.PRAMDAC[0x00000848/4] & 0xfff000ff;
 
        if (rinfo->riva.flatPanel) {
                newmode.ext.pixel |= (1 << 7);
                newmode.ext.scale |= (1 << 8);
        }
 
        newmode.ext.vpll2 = rinfo->riva.PRAMDAC[0x00000520/4];
 
#if defined(__powerpc__)
        /*
         * XXX only Mac cards use second DAC for flat panel
         */
        if (rinfo->riva.flatPanel) {
                newmode.ext.pllsel |= 0x20000800;
                newmode.ext.vpll2 = newmode.ext.vpll;
        }
#endif
        rinfo->current_state = newmode;
        riva_load_state(rinfo, &rinfo->current_state);
 
        rinfo->riva.LockUnlock(&rinfo->riva, 0); /* important for HW cursor */
        rivafb_download_cursor(rinfo);
 
        rivafb_blank(0, (struct fb_info *)rinfo);
}
 
/**
 * riva_board_list_add - maintains board list
 * @board_list: root node of list of boards
 * @new_node: new node to be added
 *
 * DESCRIPTION:
 * Adds @new_node to the list referenced by @board_list.
 *
 * RETURNS:
 * New root node
 *
 * CALLED FROM:
 * rivafb_init_one()
 */
static struct rivafb_info *riva_board_list_add(struct rivafb_info *board_list,
                                               struct rivafb_info *new_node)
{
        struct rivafb_info *i_p = board_list;
 
        new_node->next = NULL;
 
        if (board_list == NULL)
                return new_node;
 
        while (i_p->next != NULL)
                i_p = i_p->next;
        i_p->next = new_node;
 
        return board_list;
}
 
/**
 * riva_board_list_del - maintains board list
 * @board_list: root node of list of boards
 * @del_node: node to be removed
 *
 * DESCRIPTION:
 * Removes @del_node from the list referenced by @board_list.
 *
 * RETURNS:
 * New root node
 *
 * CALLED FROM:
 * rivafb_remove_one()
 */
static struct rivafb_info *riva_board_list_del(struct rivafb_info *board_list,
                                               struct rivafb_info *del_node)
{
        struct rivafb_info *i_p = board_list;
 
        if (board_list == del_node)
                return del_node->next;
 
        while (i_p->next != del_node)
                i_p = i_p->next;
        i_p->next = del_node->next;
 
        return board_list;
}
 
/**
 * rivafb_do_maximize -
 * @rinfo: pointer to rivafb_info object containing info for current riva board
 * @var:
 * @v:
 * @nom:
 * @den:
 *
 * DESCRIPTION:
 * .
 *
 * RETURNS:
 * -EINVAL on failure, 0 on success
 *
 *
 * CALLED FROM:
 * rivafb_set_var()
 */
static int rivafb_do_maximize(struct rivafb_info *rinfo,
                              struct fb_var_screeninfo *var,
                              struct fb_var_screeninfo *v,
                              int nom, int den)
{
        static struct {
                int xres, yres;
        } modes[] = {
                {1600, 1280},
                {1280, 1024},
                {1024, 768},
                {800, 600},
                {640, 480},
                {-1, -1}
        };
        int i;
 
        /* use highest possible virtual resolution */
        if (v->xres_virtual == -1 && v->yres_virtual == -1) {
                printk(KERN_WARNING PFX
                       "using maximum available virtual resolution\n");
                for (i = 0; modes[i].xres != -1; i++) {
                        if (modes[i].xres * nom / den * modes[i].yres <
                            rinfo->ram_amount / 2)
                                break;
                }
                if (modes[i].xres == -1) {
                        printk(KERN_ERR PFX
                               "could not find a virtual resolution that fits into video memory!!\n");
                        DPRINTK("EXIT - EINVAL error\n");
                        return -EINVAL;
                }
                v->xres_virtual = modes[i].xres;
                v->yres_virtual = modes[i].yres;
 
                printk(KERN_INFO PFX
                       "virtual resolution set to maximum of %dx%d\n",
                       v->xres_virtual, v->yres_virtual);
        } else if (v->xres_virtual == -1) {
                v->xres_virtual = (rinfo->ram_amount * den /
                        (nom * v->yres_virtual * 2)) & ~15;
                printk(KERN_WARNING PFX
                       "setting virtual X resolution to %d\n", v->xres_virtual);
        } else if (v->yres_virtual == -1) {
                v->xres_virtual = (v->xres_virtual + 15) & ~15;
                v->yres_virtual = rinfo->ram_amount * den /
                        (nom * v->xres_virtual * 2);
                printk(KERN_WARNING PFX
                       "setting virtual Y resolution to %d\n", v->yres_virtual);
        } else {
                v->xres_virtual = (v->xres_virtual + 15) & ~15;
                if (v->xres_virtual * nom / den * v->yres_virtual > rinfo->ram_amount) {
                        printk(KERN_ERR PFX
                               "mode %dx%dx%d rejected...resolution too high to fit into video memory!\n",
                               var->xres, var->yres, var->bits_per_pixel);
                        DPRINTK("EXIT - EINVAL error\n");
                        return -EINVAL;
                }
        }
 
        if (v->xres_virtual * nom / den >= 8192) {
                printk(KERN_WARNING PFX
                       "virtual X resolution (%d) is too high, lowering to %d\n",
                       v->xres_virtual, 8192 * den / nom - 16);
                v->xres_virtual = 8192 * den / nom - 16;
        }
 
        if (v->xres_virtual < v->xres) {
                printk(KERN_ERR PFX
                       "virtual X resolution (%d) is smaller than real\n", v->xres_virtual);
                return -EINVAL;
        }
 
        if (v->yres_virtual < v->yres) {
                printk(KERN_ERR PFX
                       "virtual Y resolution (%d) is smaller than real\n", v->yres_virtual);
                return -EINVAL;
        }
 
        return 0;
}
 
 
 
/* ------------------------------------------------------------------------- *
 *
 * internal fb_ops helper functions
 *
 * ------------------------------------------------------------------------- */
 
/**
 * riva_get_cmap_len - query current color map length
 * @var: standard kernel fb changeable data
 *
 * DESCRIPTION:
 * Get current color map length.
 *
 * RETURNS:
 * Length of color map
 *
 * CALLED FROM:
 * riva_getcolreg()
 * riva_setcolreg()
 * rivafb_get_cmap()
 * rivafb_set_cmap()
 */
static int riva_get_cmap_len(const struct fb_var_screeninfo *var)
{
        int rc = 16;            /* reasonable default */
 
        assert(var != NULL);
 
        switch (var->bits_per_pixel) {
#ifdef FBCON_HAS_CFB8
        case 8:
                rc = 256;       /* pseudocolor... 256 entries HW palette */
                break;
#endif
#ifdef FBCON_HAS_CFB16
        case 15:
                rc = 15;        /* fix for 15 bpp depths on Riva 128 based cards */
                break;
        case 16:
                rc = 16;        /* directcolor... 16 entries SW palette */
                break;          /* Mystique: truecolor, 16 entries SW palette, HW palette hardwired into 1:1 mapping */
#endif
#ifdef FBCON_HAS_CFB32
        case 32:
                rc = 16;        /* directcolor... 16 entries SW palette */
                break;          /* Mystique: truecolor, 16 entries SW palette, HW palette hardwired into 1:1 mapping */
#endif
        default:
                /* should not occur */
                break;
        }
 
        return rc;
}
 
/**
 * riva_getcolreg
 * @regno: register index
 * @red: red component
 * @green: green component
 * @blue: blue component
 * @transp: transparency
 * @info: pointer to rivafb_info object containing info for current riva board
 *
 * DESCRIPTION:
 * Read a single color register and split it into colors/transparent.
 * The return values must have a 16 bit magnitude.
 *
 * RETURNS:
 * Return != 0 for invalid regno.
 *
 * CALLED FROM:
 * rivafb_get_cmap()
 * rivafb_switch()
 * fbcmap.c:fb_get_cmap()
 *      fbgen.c:fbgen_get_cmap()
 *      fbgen.c:fbgen_switch()
 */
static int riva_getcolreg(unsigned regno, unsigned *red, unsigned *green,
                          unsigned *blue, unsigned *transp,
                          struct fb_info *info)
{
        struct rivafb_info *rivainfo = (struct rivafb_info *)info;
 
        if (regno >= riva_get_cmap_len(&rivainfo->currcon_display->var))
                return 1;
 
        *red = rivainfo->palette[regno].red;
        *green = rivainfo->palette[regno].green;
        *blue = rivainfo->palette[regno].blue;
        *transp = 0;
 
        return 0;
}
 
/**
 * riva_setcolreg
 * @regno: register index
 * @red: red component
 * @green: green component
 * @blue: blue component
 * @transp: transparency
 * @info: pointer to rivafb_info object containing info for current riva board
 *
 * DESCRIPTION:
 * Set a single color register. The values supplied have a 16 bit
 * magnitude.
 *
 * RETURNS:
 * Return != 0 for invalid regno.
 *
 * CALLED FROM:
 * rivafb_set_cmap()
 * fbcmap.c:fb_set_cmap()
 *      fbgen.c:fbgen_get_cmap()
 *      fbgen.c:fbgen_install_cmap()
 *              fbgen.c:fbgen_set_var()
 *              fbgen.c:fbgen_switch()
 *              fbgen.c:fbgen_blank()
 *      fbgen.c:fbgen_blank()
 */
static int riva_setcolreg(unsigned regno, unsigned red, unsigned green,
                          unsigned blue, unsigned transp,
                          struct fb_info *info)
{
        struct rivafb_info *rivainfo = (struct rivafb_info *)info;
        RIVA_HW_INST *chip = &rivainfo->riva;
        struct display *p;
 
        DPRINTK("ENTER\n");
 
        assert(rivainfo != NULL);
        assert(rivainfo->currcon_display != NULL);
 
        p = rivainfo->currcon_display;
 
        if (regno >= riva_get_cmap_len(&p->var))
                return -EINVAL;
 
        rivainfo->palette[regno].red = red;
        rivainfo->palette[regno].green = green;
        rivainfo->palette[regno].blue = blue;
 
        if (p->var.grayscale) {
                /* gray = 0.30*R + 0.59*G + 0.11*B */
                red = green = blue =
                    (red * 77 + green * 151 + blue * 28) >> 8;
        }
 
        switch (p->var.bits_per_pixel) {
#ifdef FBCON_HAS_CFB8
        case 8:
                /* "transparent" stuff is completely ignored. */
                riva_wclut(chip, regno, red >> 8, green >> 8, blue >> 8);
                break;
#endif /* FBCON_HAS_CFB8 */
#ifdef FBCON_HAS_CFB16
        case 16:
                assert(regno < 16);
                if (p->var.green.length == 5) {
                        /* 0rrrrrgg gggbbbbb */
                        rivainfo->con_cmap.cfb16[regno] =
                            ((red & 0xf800) >> 1) |
                            ((green & 0xf800) >> 6) | ((blue & 0xf800) >> 11);
                } else {
                        /* rrrrrggg gggbbbbb */
                        rivainfo->con_cmap.cfb16[regno] =
                            ((red & 0xf800) >> 0) |
                            ((green & 0xf800) >> 5) | ((blue & 0xf800) >> 11);
                }
                break;
#endif /* FBCON_HAS_CFB16 */
#ifdef FBCON_HAS_CFB32
        case 32:
                assert(regno < 16);
                rivainfo->con_cmap.cfb32[regno] =
                    ((red & 0xff00) << 8) |
                    ((green & 0xff00)) | ((blue & 0xff00) >> 8);
                break;
#endif /* FBCON_HAS_CFB32 */
        default:
                /* do nothing */
                break;
        }
 
        return 0;
}
 
 
 
/* ------------------------------------------------------------------------- *
 *
 * framebuffer operations
 *
 * ------------------------------------------------------------------------- */
 
static int rivafb_get_fix(struct fb_fix_screeninfo *fix, int con,
                          struct fb_info *info)
{
        struct rivafb_info *rivainfo = (struct rivafb_info *)info;
        struct display *p;
 
        DPRINTK("ENTER\n");
 
        assert(fix != NULL);
        assert(info != NULL);
        assert(rivainfo->drvr_name && rivainfo->drvr_name[0]);
        assert(rivainfo->fb_base_phys > 0);
        assert(rivainfo->ram_amount > 0);
 
        p = (con < 0) ? rivainfo->info.disp : &fb_display[con];
 
        memset(fix, 0, sizeof(struct fb_fix_screeninfo));
        sprintf(fix->id, "nVidia %s", rivainfo->drvr_name);
 
        fix->type = p->type;
        fix->type_aux = p->type_aux;
        fix->visual = p->visual;
 
        fix->xpanstep = 1;
        fix->ypanstep = 1;
        fix->ywrapstep = 0;      /* FIXME: no ywrap for now */
 
        fix->line_length = p->line_length;
 
        fix->mmio_start = rivainfo->ctrl_base_phys;
        fix->mmio_len = rivainfo->base0_region_size;
        fix->smem_start = rivainfo->fb_base_phys;
        fix->smem_len = rivainfo->ram_amount;
 
        switch (rivainfo->riva.Architecture) {
        case NV_ARCH_03:
                fix->accel = FB_ACCEL_NV3;
                break;
        case NV_ARCH_04:        /* riva_hw.c now doesn't distinguish between TNT & TNT2 */
                fix->accel = FB_ACCEL_NV4;
                break;
        case NV_ARCH_10:        /* FIXME: ID for GeForce */
        case NV_ARCH_20:
                fix->accel = FB_ACCEL_NV4;
                break;
 
        }
 
        DPRINTK("EXIT, returning 0\n");
 
        return 0;
}
 
static int rivafb_get_var(struct fb_var_screeninfo *var, int con,
                          struct fb_info *info)
{
        struct rivafb_info *rivainfo = (struct rivafb_info *)info;
 
        DPRINTK("ENTER\n");
 
        assert(info != NULL);
        assert(var != NULL);
 
        *var = (con < 0) ? rivainfo->disp.var : fb_display[con].var;
 
        DPRINTK("EXIT, returning 0\n");
 
        return 0;
}
 
static int rivafb_set_var(struct fb_var_screeninfo *var, int con,
                          struct fb_info *info)
{
        struct rivafb_info *rivainfo = (struct rivafb_info *)info;
        struct display *dsp;
        struct fb_var_screeninfo v;
        int nom, den;           /* translating from pixels->bytes */
        int accel;
        unsigned chgvar = 0;
 
        DPRINTK("ENTER\n");
 
        assert(info != NULL);
        assert(var != NULL);
 
        DPRINTK("Requested: %dx%dx%d\n", var->xres, var->yres,
                var->bits_per_pixel);
        DPRINTK("  virtual: %dx%d\n", var->xres_virtual,
                var->yres_virtual);
        DPRINTK("   offset: (%d,%d)\n", var->xoffset, var->yoffset);
        DPRINTK("grayscale: %d\n", var->grayscale);
 
        dsp = (con < 0) ? rivainfo->info.disp : &fb_display[con];
        assert(dsp != NULL);
 
        /* if var has changed, we should call changevar() later */
        if (con >= 0) {
                chgvar = ((dsp->var.xres != var->xres) ||
                          (dsp->var.yres != var->yres) ||
                          (dsp->var.xres_virtual != var->xres_virtual) ||
                          (dsp->var.yres_virtual != var->yres_virtual) ||
                          (dsp->var.accel_flags != var->accel_flags) ||
                          (dsp->var.bits_per_pixel != var->bits_per_pixel)
                          || memcmp(&dsp->var.red, &var->red,
                                    sizeof(var->red))
                          || memcmp(&dsp->var.green, &var->green,
                                    sizeof(var->green))
                          || memcmp(&dsp->var.blue, &var->blue,
                                    sizeof(var->blue)));
        }
 
        memcpy(&v, var, sizeof(v));
 
        accel = v.accel_flags & FB_ACCELF_TEXT;
 
        switch (v.bits_per_pixel) {
#ifdef FBCON_HAS_CFB8
        case 1 ... 8:
                v.bits_per_pixel = 8;
                nom = 1;
                den = 1;
                v.red.offset = 0;
                v.red.length = 8;
                v.green.offset = 0;
                v.green.length = 8;
                v.blue.offset = 0;
                v.blue.length = 8;
                break;
#endif
#ifdef FBCON_HAS_CFB16
        case 9 ... 15:
                v.green.length = 5;
                /* fall through */
        case 16:
                v.bits_per_pixel = 16;
                nom = 2;
                den = 1;
                if (v.green.length == 5) {
                        /* 0rrrrrgg gggbbbbb */
                        v.red.offset = 10;
                        v.green.offset = 5;
                        v.blue.offset = 0;
                        v.red.length = 5;
                        v.green.length = 5;
                        v.blue.length = 5;
                } else {
                        /* rrrrrggg gggbbbbb */
                        v.red.offset = 11;
                        v.green.offset = 5;
                        v.blue.offset = 0;
                        v.red.length = 5;
                        v.green.length = 6;
                        v.blue.length = 5;
                }
                break;
#endif
#ifdef FBCON_HAS_CFB32
        case 17 ... 32:
                v.bits_per_pixel = 32;
                nom = 4;
                den = 1;
                v.red.offset = 16;
                v.green.offset = 8;
                v.blue.offset = 0;
                v.red.length = 8;
                v.green.length = 8;
                v.blue.length = 8;
                break;
#endif
        default:
                printk(KERN_ERR PFX
                       "mode %dx%dx%d rejected...color depth not supported.\n",
                       var->xres, var->yres, var->bits_per_pixel);
                DPRINTK("EXIT, returning -EINVAL\n");
                return -EINVAL;
        }
 
        if (rivafb_do_maximize(rivainfo, var, &v, nom, den) < 0)
                return -EINVAL;
 
        if (v.xoffset < 0)
                v.xoffset = 0;
        if (v.yoffset < 0)
                v.yoffset = 0;
 
        /* truncate xoffset and yoffset to maximum if too high */
        if (v.xoffset > v.xres_virtual - v.xres)
                v.xoffset = v.xres_virtual - v.xres - 1;
 
        if (v.yoffset > v.yres_virtual - v.yres)
                v.yoffset = v.yres_virtual - v.yres - 1;
 
        v.red.msb_right =
            v.green.msb_right =
            v.blue.msb_right =
            v.transp.offset = v.transp.length = v.transp.msb_right = 0;
 
        switch (v.activate & FB_ACTIVATE_MASK) {
        case FB_ACTIVATE_TEST:
                DPRINTK("EXIT - FB_ACTIVATE_TEST\n");
                return 0;
        case FB_ACTIVATE_NXTOPEN:       /* ?? */
        case FB_ACTIVATE_NOW:
                break;          /* continue */
        default:
                DPRINTK("EXIT - unknown activation type\n");
                return -EINVAL; /* unknown */
        }
 
        memcpy(&dsp->var, &v, sizeof(v));
        if (chgvar) {
                riva_set_dispsw(rivainfo, dsp);
 
                if (accel) {
                        if (nomove)
                                dsp->scrollmode = SCROLL_YNOMOVE;
                        else
                                dsp->scrollmode = 0;
                } else
                        dsp->scrollmode = SCROLL_YREDRAW;
 
                if (info && info->changevar)
                        info->changevar(con);
        }
 
        rivafb_create_cursor(rivainfo, fontwidth(dsp), fontheight(dsp));
        riva_load_video_mode(rivainfo, &v);
        if (accel) riva_setup_accel(rivainfo);
 
        DPRINTK("EXIT, returning 0\n");
        return 0;
}
 
static int rivafb_get_cmap(struct fb_cmap *cmap, int kspc, int con,
                           struct fb_info *info)
{
        struct rivafb_info *rivainfo = (struct rivafb_info *)info;
        struct display *dsp;
 
        DPRINTK("ENTER\n");
 
        assert(rivainfo != NULL);
        assert(cmap != NULL);
 
        dsp = (con < 0) ? rivainfo->info.disp : &fb_display[con];
 
        if (con == rivainfo->currcon) { /* current console? */
                int rc = fb_get_cmap(cmap, kspc, riva_getcolreg, info);
                DPRINTK("EXIT - returning %d\n", rc);
                return rc;
        } else if (dsp->cmap.len)       /* non default colormap? */
                fb_copy_cmap(&dsp->cmap, cmap, kspc ? 0 : 2);
        else
                fb_copy_cmap(fb_default_cmap
                             (riva_get_cmap_len(&dsp->var)), cmap,
                             kspc ? 0 : 2);
 
        DPRINTK("EXIT, returning 0\n");
 
        return 0;
}
 
static int rivafb_set_cmap(struct fb_cmap *cmap, int kspc, int con,
                           struct fb_info *info)
{
        struct rivafb_info *rivainfo = (struct rivafb_info *)info;
        struct display *dsp;
        unsigned int cmap_len;
 
        DPRINTK("ENTER\n");
 
        assert(rivainfo != NULL);
        assert(cmap != NULL);
 
        dsp = (con < 0) ? rivainfo->info.disp : &fb_display[con];
 
        cmap_len = riva_get_cmap_len(&dsp->var);
        if (dsp->cmap.len != cmap_len) {
                int err = fb_alloc_cmap(&dsp->cmap, cmap_len, 0);
                if (err) {
                        DPRINTK("EXIT - returning %d\n", err);
                        return err;
                }
        }
        if (con == rivainfo->currcon) { /* current console? */
                int rc = fb_set_cmap(cmap, kspc, riva_setcolreg, info);
                DPRINTK("EXIT - returning %d\n", rc);
                return rc;
        } else
                fb_copy_cmap(cmap, &dsp->cmap, kspc ? 0 : 1);
 
        DPRINTK("EXIT, returning 0\n");
 
        return 0;
}
 
/**
 * rivafb_pan_display
 * @var: standard kernel fb changeable data
 * @con: TODO
 * @info: pointer to rivafb_info object containing info for current riva board
 *
 * DESCRIPTION:
 * Pan (or wrap, depending on the `vmode' field) the display using the
 * `xoffset' and `yoffset' fields of the `var' structure.
 * If the values don't fit, return -EINVAL.
 *
 * This call looks only at xoffset, yoffset and the FB_VMODE_YWRAP flag
 */
static int rivafb_pan_display(struct fb_var_screeninfo *var, int con,
                              struct fb_info *info)
{
        unsigned int base;
        struct display *dsp;
        struct rivafb_info *rivainfo = (struct rivafb_info *)info;
 
        DPRINTK("ENTER\n");
 
        assert(rivainfo != NULL);
 
        if (var->xoffset > (var->xres_virtual - var->xres))
                return -EINVAL;
        if (var->yoffset > (var->yres_virtual - var->yres))
                return -EINVAL;
 
        dsp = (con < 0) ? rivainfo->info.disp : &fb_display[con];
 
        if (var->vmode & FB_VMODE_YWRAP) {
                if (var->yoffset < 0
                    || var->yoffset >= dsp->var.yres_virtual
                    || var->xoffset) return -EINVAL;
        } else {
                if (var->xoffset + dsp->var.xres > dsp->var.xres_virtual ||
                    var->yoffset + dsp->var.yres > dsp->var.yres_virtual)
                        return -EINVAL;
        }
 
        base = var->yoffset * dsp->line_length + var->xoffset;
 
        if (con == rivainfo->currcon) {
                rivainfo->riva.SetStartAddress(&rivainfo->riva, base);
        }
 
        dsp->var.xoffset = var->xoffset;
        dsp->var.yoffset = var->yoffset;
 
        if (var->vmode & FB_VMODE_YWRAP)
                dsp->var.vmode |= FB_VMODE_YWRAP;
        else
                dsp->var.vmode &= ~FB_VMODE_YWRAP;
 
        DPRINTK("EXIT, returning 0\n");
 
        return 0;
}
 
static int rivafb_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
                        unsigned long arg, int con, struct fb_info *info)
{
        struct rivafb_info *rivainfo = (struct rivafb_info *)info;
 
        DPRINTK("ENTER\n");
 
        assert(rivainfo != NULL);
 
        /* no rivafb-specific ioctls */
 
        DPRINTK("EXIT, returning -EINVAL\n");
 
        return -EINVAL;
}
 
static int rivafb_rasterimg(struct fb_info *info, int start)
{
        struct rivafb_info *rinfo = (struct rivafb_info *)info;
 
        wait_for_idle(rinfo);
 
        return 0;
}
 
static int rivafb_switch(int con, struct fb_info *info)
{
        struct rivafb_info *rivainfo = (struct rivafb_info *)info;
        struct fb_cmap *cmap;
        struct display *dsp;
 
        DPRINTK("ENTER\n");
 
        assert(rivainfo != NULL);
 
        dsp = (con < 0) ? rivainfo->info.disp : &fb_display[con];
 
        if (rivainfo->currcon >= 0) {
                /* Do we have to save the colormap? */
                cmap = &(rivainfo->currcon_display->cmap);
                DPRINTK("switch1: con = %d, cmap.len = %d\n",
                         rivainfo->currcon, cmap->len);
 
                if (cmap->len) {
                        DPRINTK("switch1a: %p %p %p %p\n", cmap->red,
                                 cmap->green, cmap->blue, cmap->transp);
                        fb_get_cmap(cmap, 1, riva_getcolreg, info);
                }
        }
        rivainfo->currcon = con;
        rivainfo->currcon_display = dsp;
 
        rivafb_set_var(&dsp->var, con, info);
        riva_set_dispsw(rivainfo, dsp);
 
        DPRINTK("EXIT, returning 0\n");
        return 0;
}
 
static int rivafb_updatevar(int con, struct fb_info *info)
{
        int rc;
 
        DPRINTK("ENTER\n");
 
        rc = (con < 0) ? -EINVAL : rivafb_pan_display(&fb_display[con].var,
                                                      con, info);
        DPRINTK("EXIT, returning %d\n", rc);
        return rc;
}
 
static void rivafb_blank(int blank, struct fb_info *info)
{
        unsigned char tmp, vesa;
        struct rivafb_info *rinfo = (struct rivafb_info *)info;
 
        DPRINTK("ENTER\n");
 
        assert(rinfo != NULL);
 
        tmp = SEQin(rinfo, 0x01) & ~0x20;       /* screen on/off */
        vesa = CRTCin(rinfo, 0x1a) & ~0xc0;     /* sync on/off */
 
        if (blank) {
                tmp |= 0x20;
                switch (blank - 1) {
                case VESA_NO_BLANKING:
                        break;
                case VESA_VSYNC_SUSPEND:
                        vesa |= 0x80;
                        break;
                case VESA_HSYNC_SUSPEND:
                        vesa |= 0x40;
                        break;
                case VESA_POWERDOWN:
                        vesa |= 0xc0;
                        break;
                }
        }
 
        SEQout(rinfo, 0x01, tmp);
        CRTCout(rinfo, 0x1a, vesa);
 
        DPRINTK("EXIT\n");
}
 
 
 
/* ------------------------------------------------------------------------- *
 *
 * initialization helper functions
 *
 * ------------------------------------------------------------------------- */
 
/* kernel interface */
static struct fb_ops riva_fb_ops = {
        owner:          THIS_MODULE,
        fb_get_fix:     rivafb_get_fix,
        fb_get_var:     rivafb_get_var,
        fb_set_var:     rivafb_set_var,
        fb_get_cmap:    rivafb_get_cmap,
        fb_set_cmap:    rivafb_set_cmap,
        fb_pan_display: rivafb_pan_display,
        fb_ioctl:       rivafb_ioctl,
        fb_rasterimg:   rivafb_rasterimg,
};
 
static int __devinit riva_init_disp_var(struct rivafb_info *rinfo)
{
#ifndef MODULE
        if (mode_option)
                fb_find_mode(&rinfo->disp.var, &rinfo->info, mode_option,
                             NULL, 0, NULL, 8);
#endif
        if (rinfo->use_default_var)
                /* We will use the modified default var */
                rinfo->disp.var = rivafb_default_var;
 
        return 0;
}
 
static int __devinit riva_init_disp(struct rivafb_info *rinfo)
{
        struct fb_info *info;
        struct display *disp;
 
        DPRINTK("ENTER\n");
 
        assert(rinfo != NULL);
 
        info = &rinfo->info;
        disp = &rinfo->disp;
 
        disp->var = rivafb_default_var;
 
        if (noaccel)
                disp->var.accel_flags &= ~FB_ACCELF_TEXT;
        else
                disp->var.accel_flags |= FB_ACCELF_TEXT;
 
        info->disp = disp;
 
        /* FIXME: assure that disp->cmap is completely filled out */
 
        rinfo->currcon_display = disp;
 
        if ((riva_init_disp_var(rinfo)) < 0) {
                DPRINTK("EXIT, returning -1\n");
                return -1;
        }
 
        riva_set_dispsw(rinfo, disp);
 
        DPRINTK("EXIT, returning 0\n");
        return 0;
 
}
 
static int __devinit riva_set_fbinfo(struct rivafb_info *rinfo)
{
        struct fb_info *info;
 
        assert(rinfo != NULL);
 
        info = &rinfo->info;
 
        strcpy(info->modename, rinfo->drvr_name);
        info->node = -1;
        info->flags = FBINFO_FLAG_DEFAULT;
        info->fbops = &riva_fb_ops;
 
        /* FIXME: set monspecs to what??? */
 
        info->display_fg = NULL;
        strncpy(info->fontname, fontname, sizeof(info->fontname));
        info->fontname[sizeof(info->fontname) - 1] = 0;
 
        info->changevar = NULL;
        info->switch_con = rivafb_switch;
        info->updatevar = rivafb_updatevar;
        info->blank = rivafb_blank;
 
        if (riva_init_disp(rinfo) < 0)   /* must be done last */
                return -1;
 
        return 0;
}
 
#ifdef CONFIG_ALL_PPC
static int riva_get_EDID_OF(struct rivafb_info *rinfo)
{
        struct device_node *dp;
        unsigned char *pedid = NULL;
 
        dp = pci_device_to_OF_node(rinfo->pd);
        pedid = (unsigned char *)get_property(dp, "EDID,B", 0);
 
        if (pedid) {
                rinfo->EDID = pedid;
                return 1;
        } else
                return 0;
}
#endif /* CONFIG_ALL_PPC */
 
static int riva_dfp_parse_EDID(struct rivafb_info *rinfo)
{
        unsigned char *block = rinfo->EDID;
 
        if (!block)
                return 0;
 
        /* jump to detailed timing block section */
        block += 54;
 
        rinfo->clock = (block[0] + (block[1] << 8));
        rinfo->panel_xres = (block[2] + ((block[4] & 0xf0) << 4));
        rinfo->hblank = (block[3] + ((block[4] & 0x0f) << 8));
        rinfo->panel_yres = (block[5] + ((block[7] & 0xf0) << 4));
        rinfo->vblank = (block[6] + ((block[7] & 0x0f) << 8));
        rinfo->hOver_plus = (block[8] + ((block[11] & 0xc0) << 2));
        rinfo->hSync_width = (block[9] + ((block[11] & 0x30) << 4));
        rinfo->vOver_plus = ((block[10] >> 4) + ((block[11] & 0x0c) << 2));
        rinfo->vSync_width = ((block[10] & 0x0f) + ((block[11] & 0x03) << 4));
        rinfo->interlaced = ((block[17] & 0x80) >> 7);
        rinfo->synct = ((block[17] & 0x18) >> 3);
        rinfo->misc = ((block[17] & 0x06) >> 1);
        rinfo->hAct_high = rinfo->vAct_high = 0;
        if (rinfo->synct == 3) {
                if (rinfo->misc & 2)
                        rinfo->hAct_high = 1;
                if (rinfo->misc & 1)
                        rinfo->vAct_high = 1;
        }
 
        printk("rivafb: detected DFP panel size from EDID: %dx%d\n",
                rinfo->panel_xres, rinfo->panel_yres);
 
        rinfo->got_dfpinfo = 1;
 
        return 1;
}
 
static void riva_update_default_var(struct rivafb_info *rinfo)
{
        struct fb_var_screeninfo *var = &rivafb_default_var;
 
        var->xres = rinfo->panel_xres;
        var->yres = rinfo->panel_yres;
        var->xres_virtual = rinfo->panel_xres;
        var->yres_virtual = rinfo->panel_yres;
        var->xoffset = var->yoffset = 0;
        var->bits_per_pixel = 8;
        var->pixclock = 100000000 / rinfo->clock;
        var->left_margin = (rinfo->hblank - rinfo->hOver_plus - rinfo->hSync_width);
        var->right_margin = rinfo->hOver_plus;
        var->upper_margin = (rinfo->vblank - rinfo->vOver_plus - rinfo->vSync_width);
        var->lower_margin = rinfo->vOver_plus;
        var->hsync_len = rinfo->hSync_width;
        var->vsync_len = rinfo->vSync_width;
        var->sync = 0;
 
        if (rinfo->synct == 3) {
                if (rinfo->hAct_high)
                        var->sync |= FB_SYNC_HOR_HIGH_ACT;
                if (rinfo->vAct_high)
                        var->sync |= FB_SYNC_VERT_HIGH_ACT;
        }
 
        var->vmode = 0;
        if (rinfo->interlaced)
                var->vmode |= FB_VMODE_INTERLACED;
 
        if (!noaccel)
                var->accel_flags |= FB_ACCELF_TEXT;
 
        rinfo->use_default_var = 1;
}
 
 
static void riva_get_EDID(struct rivafb_info *rinfo)
{
#ifdef CONFIG_ALL_PPC
        if (!riva_get_EDID_OF(rinfo))
                printk("rivafb: could not retrieve EDID from OF\n");
#else
        /* XXX use other methods later */
#endif
}
 
 
static void riva_get_dfpinfo(struct rivafb_info *rinfo)
{
        if (riva_dfp_parse_EDID(rinfo))
                riva_update_default_var(rinfo);
 
        rinfo->riva.flatPanel = rinfo->got_dfpinfo;
}
 
 
 
/* ------------------------------------------------------------------------- *
 *
 * PCI bus
 *
 * ------------------------------------------------------------------------- */
 
static int __devinit rivafb_init_one(struct pci_dev *pd,
                                     const struct pci_device_id *ent)
{
        struct rivafb_info *rinfo;
        struct riva_chip_info *rci = &riva_chip_info[ent->driver_data];
 
        assert(pd != NULL);
        assert(rci != NULL);
 
        rinfo = kmalloc(sizeof(struct rivafb_info), GFP_KERNEL);
        if (!rinfo)
                goto err_out;
 
        memset(rinfo, 0, sizeof(struct rivafb_info));
 
        rinfo->drvr_name = rci->name;
        rinfo->riva.Architecture = rci->arch_rev;
 
        rinfo->pd = pd;
        rinfo->base0_region_size = pci_resource_len(pd, 0);
        rinfo->base1_region_size = pci_resource_len(pd, 1);
 
        {
                /* enable IO and mem if not already done */
                unsigned short cmd;
 
                pci_read_config_word(pd, PCI_COMMAND, &cmd);
                cmd |= (PCI_COMMAND_IO | PCI_COMMAND_MEMORY);
                pci_write_config_word(pd, PCI_COMMAND, cmd);
        }
 
        rinfo->ctrl_base_phys = pci_resource_start(rinfo->pd, 0);
        rinfo->fb_base_phys = pci_resource_start(rinfo->pd, 1);
 
        rinfo->ctrl_base = ioremap(rinfo->ctrl_base_phys,
                                   rinfo->base0_region_size);
        if (!rinfo->ctrl_base) {
                printk(KERN_ERR PFX "cannot ioremap MMIO base\n");
                goto err_out_free_base1;
        }
 
        riva_get_EDID(rinfo);
 
        riva_get_dfpinfo(rinfo);
 
        rinfo->riva.EnableIRQ = 0;
        rinfo->riva.PRAMDAC = (unsigned *)(rinfo->ctrl_base + 0x00680000);
        rinfo->riva.PFB = (unsigned *)(rinfo->ctrl_base + 0x00100000);
        rinfo->riva.PFIFO = (unsigned *)(rinfo->ctrl_base + 0x00002000);
        rinfo->riva.PGRAPH = (unsigned *)(rinfo->ctrl_base + 0x00400000);
        rinfo->riva.PEXTDEV = (unsigned *)(rinfo->ctrl_base + 0x00101000);
        rinfo->riva.PTIMER = (unsigned *)(rinfo->ctrl_base + 0x00009000);
        rinfo->riva.PMC = (unsigned *)(rinfo->ctrl_base + 0x00000000);
        rinfo->riva.FIFO = (unsigned *)(rinfo->ctrl_base + 0x00800000);
 
        rinfo->riva.PCIO = (U008 *)(rinfo->ctrl_base + 0x00601000);
        rinfo->riva.PDIO = (U008 *)(rinfo->ctrl_base + 0x00681000);
        rinfo->riva.PVIO = (U008 *)(rinfo->ctrl_base + 0x000C0000);
 
        rinfo->riva.IO = (MISCin(rinfo) & 0x01) ? 0x3D0 : 0x3B0;
 
        if (rinfo->riva.Architecture == NV_ARCH_03) {
                /*
                 * We have to map the full BASE_1 aperture for Riva128's
                 * because they use the PRAMIN set in "framebuffer" space
                 */
                if (!request_mem_region(rinfo->fb_base_phys,
                                        rinfo->base1_region_size, "rivafb")) {
                        printk(KERN_ERR PFX "cannot reserve FB region\n");
                        goto err_out_free_base0;
                }
 
                rinfo->fb_base = ioremap(rinfo->fb_base_phys,
                                         rinfo->base1_region_size);
                if (!rinfo->fb_base) {
                        printk(KERN_ERR PFX "cannot ioremap FB base\n");
                        goto err_out_iounmap_ctrl;
                }
        }
 
 
        switch (rinfo->riva.Architecture) {
        case NV_ARCH_03:
                rinfo->riva.PRAMIN = (unsigned *)(rinfo->fb_base + 0x00C00000);
                break;
        case NV_ARCH_04:
        case NV_ARCH_10:
        case NV_ARCH_20:
                rinfo->riva.PCRTC = (unsigned *)(rinfo->ctrl_base + 0x00600000);
                rinfo->riva.PRAMIN = (unsigned *)(rinfo->ctrl_base + 0x00710000);
                break;
        }
 
#if defined(__powerpc__)
        /*
         * XXX Mac cards use the second DAC for the panel
         */
        if (rinfo->riva.flatPanel) {
                printk("rivafb: using second CRTC\n");
                rinfo->riva.PCIO = rinfo->riva.PCIO + 0x2000;
                rinfo->riva.PCRTC = rinfo->riva.PCRTC + 0x800;
                rinfo->riva.PRAMDAC = rinfo->riva.PRAMDAC + 0x800;
                rinfo->riva.PDIO = rinfo->riva.PDIO + 0x2000;
        }
#endif
 
        RivaGetConfig(&rinfo->riva);
 
        rinfo->ram_amount = rinfo->riva.RamAmountKBytes * 1024;
        rinfo->dclk_max = rinfo->riva.MaxVClockFreqKHz * 1000;
 
        if (rinfo->riva.Architecture != NV_ARCH_03) {
                /*
                 * Now the _normal_ chipsets can just map the amount of
                 * real physical ram instead of the whole aperture
                 */
                if (!request_mem_region(rinfo->fb_base_phys,
                                        rinfo->ram_amount, "rivafb")) {
                        printk(KERN_ERR PFX "cannot reserve FB region\n");
                        goto err_out_free_base0;
                }
 
                rinfo->fb_base = ioremap(rinfo->fb_base_phys,
                                         rinfo->ram_amount);
                if (!rinfo->fb_base) {
                        printk(KERN_ERR PFX "cannot ioremap FB base\n");
                        goto err_out_iounmap_ctrl;
                }
        }
 
#ifdef CONFIG_MTRR
        if (!nomtrr) {
                rinfo->mtrr.vram = mtrr_add(rinfo->fb_base_phys,
                                            rinfo->ram_amount,
                                            MTRR_TYPE_WRCOMB, 1);
                if (rinfo->mtrr.vram < 0) {
                        printk(KERN_ERR PFX "unable to setup MTRR\n");
                } else {
                        rinfo->mtrr.vram_valid = 1;
                        /* let there be speed */
                        printk(KERN_INFO PFX "RIVA MTRR set to ON\n");
                }
        }
#endif /* CONFIG_MTRR */
 
        /* unlock io */
        CRTCout(rinfo, 0x11, 0xFF);     /* vgaHWunlock() + riva unlock (0x7F) */
        rinfo->riva.LockUnlock(&rinfo->riva, 0);
 
        riva_save_state(rinfo, &rinfo->initial_state);
 
        if (!nohwcursor) rinfo->cursor = rivafb_init_cursor(rinfo);
 
        if (riva_set_fbinfo(rinfo) < 0) {
                printk(KERN_ERR PFX "error setting initial video mode\n");
                goto err_out_cursor;
        }
 
        if (register_framebuffer((struct fb_info *)rinfo) < 0) {
                printk(KERN_ERR PFX
                        "error registering riva framebuffer\n");
                goto err_out_load_state;
        }
 
        riva_boards = riva_board_list_add(riva_boards, rinfo);
 
        pci_set_drvdata(pd, rinfo);
 
        printk(KERN_INFO PFX
                "PCI nVidia NV%x framebuffer ver %s (%s, %dMB @ 0x%lX)\n",
                rinfo->riva.Architecture,
                RIVAFB_VERSION,
                rinfo->drvr_name,
                rinfo->ram_amount / (1024 * 1024),
                rinfo->fb_base_phys);
 
        return 0;
 
err_out_load_state:
        riva_load_state(rinfo, &rinfo->initial_state);
err_out_cursor:
        rivafb_exit_cursor(rinfo);
/* err_out_iounmap_fb: */
        iounmap(rinfo->fb_base);
err_out_iounmap_ctrl:
        iounmap(rinfo->ctrl_base);
err_out_free_base1:
        release_mem_region(rinfo->fb_base_phys, rinfo->base1_region_size);
err_out_free_base0:
        release_mem_region(rinfo->ctrl_base_phys, rinfo->base0_region_size);
err_out_kfree:
        kfree(rinfo);
err_out:
        return -ENODEV;
}
 
static void __devexit rivafb_remove_one(struct pci_dev *pd)
{
        struct rivafb_info *board = pci_get_drvdata(pd);
 
        if (!board)
                return;
 
        riva_boards = riva_board_list_del(riva_boards, board);
 
        riva_load_state(board, &board->initial_state);
 
        unregister_framebuffer((struct fb_info *)board);
 
        rivafb_exit_cursor(board);
 
#ifdef CONFIG_MTRR
        if (board->mtrr.vram_valid)
                mtrr_del(board->mtrr.vram, board->fb_base_phys,
                         board->ram_amount);
#endif /* CONFIG_MTRR */
 
        iounmap(board->ctrl_base);
        iounmap(board->fb_base);
 
        release_mem_region(board->ctrl_base_phys,
                           board->base0_region_size);
        release_mem_region(board->fb_base_phys,
                           board->ram_amount);
 
        kfree(board);
 
        pci_set_drvdata(pd, NULL);
}
 
 
 
/* ------------------------------------------------------------------------- *
 *
 * initialization
 *
 * ------------------------------------------------------------------------- */
 
#ifndef MODULE
int __init rivafb_setup(char *options)
{
        char *this_opt;
 
        if (!options || !*options)
                return 0;
 
        while ((this_opt = strsep(&options, ",")) != NULL) {
                if (!*this_opt)
                        continue;
                if (!strncmp(this_opt, "font:", 5)) {
                        char *p;
                        int i;
 
                        p = this_opt + 5;
                        for (i = 0; i < sizeof(fontname) - 1; i++)
                                if (!*p || *p == ' ' || *p == ',')
                                        break;
                        memcpy(fontname, this_opt + 5, i);
                        fontname[i] = 0;
 
                } else if (!strncmp(this_opt, "noblink", 7)) {
                        noblink = 1;
                } else if (!strncmp(this_opt, "noaccel", 7)) {
                        noaccel = 1;
                } else if (!strncmp(this_opt, "nomove", 6)) {
                        nomove = 1;
#ifdef CONFIG_MTRR
                } else if (!strncmp(this_opt, "nomtrr", 6)) {
                        nomtrr = 1;
#endif
                } else if (!strncmp(this_opt, "nohwcursor", 10)) {
                        nohwcursor = 1;
                } else
                        mode_option = this_opt;
        }
        return 0;
}
#endif /* !MODULE */
 
static struct pci_driver rivafb_driver = {
        name:           "rivafb",
        id_table:       rivafb_pci_tbl,
        probe:          rivafb_init_one,
        remove:         __devexit_p(rivafb_remove_one),
};
 
 
 
/* ------------------------------------------------------------------------- *
 *
 * modularization
 *
 * ------------------------------------------------------------------------- */
 
int __init rivafb_init(void)
{
        int err;
#ifdef MODULE
        if (font) strncpy(fontname, font, sizeof(fontname)-1);
#endif
        err = pci_module_init(&rivafb_driver);
        if (err)
                return err;
        return 0;
}
 
 
#ifdef MODULE
static void __exit rivafb_exit(void)
{
        pci_unregister_driver(&rivafb_driver);
}
 
module_init(rivafb_init);
module_exit(rivafb_exit);
 
MODULE_PARM(font, "s");
MODULE_PARM_DESC(font, "Specifies one of the compiled-in fonts (default=none)");
MODULE_PARM(noaccel, "i");
MODULE_PARM_DESC(noaccel, "Disables hardware acceleration (0 or 1=disabled) (default=0)");
MODULE_PARM(nomove, "i");
MODULE_PARM_DESC(nomove, "Enables YSCROLL_NOMOVE (0 or 1=enabled) (default=0)");
MODULE_PARM(nohwcursor, "i");
MODULE_PARM_DESC(nohwcursor, "Disables hardware cursor (0 or 1=disabled) (default=0)");
MODULE_PARM(noblink, "i");
MODULE_PARM_DESC(noblink, "Disables hardware cursor blinking (0 or 1=disabled) (default=0)");
#ifdef CONFIG_MTRR
MODULE_PARM(nomtrr, "i");
MODULE_PARM_DESC(nomtrr, "Disables MTRR support (0 or 1=disabled) (default=0)");
#endif
#endif /* MODULE */
 
MODULE_AUTHOR("Ani Joshi, maintainer");
MODULE_DESCRIPTION("Framebuffer driver for nVidia Riva 128, TNT, TNT2");
MODULE_LICENSE("GPL");
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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [video/] [riva/] [fbdev.c] - Blame information for rev 1780

Line No.	Rev	Author	Line
1	1275	phoenix	`/*`
2			`* linux/drivers/video/riva/fbdev.c`
3			`*`
4			`* nVidia RIVA 128/TNT/TNT2/GeForce2/3 fb driver`
5			`*`
6			`* Maintained by Ani Joshi <ajoshi@kernel.crashing.org>`
7			`*`
8			`* Copyright 1999-2000 Jeff Garzik`
9			`* Copyright 2000-2003 Ani Joshi`
10			`*`
11			`* Contributors:`
12			`*`
13			`* Ani Joshi: Lots of debugging and cleanup work, really helped`
14			`* get the driver going`
15			`*`
16			`* Ferenc Bakonyi: Bug fixes, cleanup, modularization`
17			`*`
18			`* Jindrich Makovicka: Accel code help, hw cursor, mtrr`
19			`*`
20			`* Initial template from skeletonfb.c, created 28 Dec 1997 by Geert Uytterhoeven`
21			`* Includes riva_hw.c from nVidia, see copyright below.`
22			`* KGI code provided the basis for state storage, init, and mode switching.`
23			`*`
24			`* This file is subject to the terms and conditions of the GNU General Public`
25			`* License. See the file COPYING in the main directory of this archive`
26			`* for more details.`
27			`*`
28			`* Known bugs and issues:`
29			`* restoring text mode fails`
30			`* doublescan modes are broken`
31			`* option 'noaccel' has no effect`
32			`*/`
33
34			`#include <linux/config.h>`
35			`#include <linux/module.h>`
36			`#include <linux/kernel.h>`
37			`#include <linux/errno.h>`
38			`#include <linux/string.h>`
39			`#include <linux/mm.h>`
40			`#include <linux/selection.h>`