/*
 *  linux/drivers/video/pm3fb.c -- 3DLabs Permedia3 frame buffer device
 *  
 *  Copyright (C) 2001 Romain Dolbeau <dolbeau@irisa.fr>
 *  Based on code written by:
 *           Sven Luther, <luther@dpt-info.u-strasbg.fr>
 *           Alan Hourihane, <alanh@fairlite.demon.co.uk>
 *           Russel King, <rmk@arm.linux.org.uk>
 *  Based on linux/drivers/video/skeletonfb.c:
 *      Copyright (C) 1997 Geert Uytterhoeven
 *  Based on linux/driver/video/pm2fb.c:
 *      Copyright (C) 1998-1999 Ilario Nardinocchi (nardinoc@CS.UniBO.IT)
 *      Copyright (C) 1999 Jakub Jelinek (jakub@redhat.com)
 *
 *  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.
 *
 *  $Header: /cvsroot/linux/drivers/video/pm3fb.c,v 1.1 2002/02/25 19:11:06 marcelo Exp $
 *
 *  CHANGELOG:
 *  Mon Feb 11 10:35:48 MET 2002, v 1.4.11B: Cosmetic update.
 *  Wed Jan 23 14:16:59 MET 2002, v 1.4.11: Preliminary 2.5.x support, patch for 2.5.2.
 *  Wed Nov 28 11:08:29 MET 2001, v 1.4.10: potential bug fix for SDRAM-based board, patch for 2.4.16.
 *  Thu Sep 20 10:24:42 MET DST 2001, v 1.4.9: sync bug fix, preliminary flatpanel support, better timings.
 *  Tue Aug 28 10:13:01 MET DST 2001, v 1.4.8: memory timings check, minor bug fixes.
 *  Wed Jul 18 19:06:14 CEST 2001, v 1.4.7: Mode fix (800x600-100, 1024x768-100 changed), using HW panning + accel bug fix.
 *  Mon Jun 25 10:33:56 MET DST 2001, v 1.4.6: Depth 12 fix, chip reset ioctl, moved memory erase ioctl to DEBUG.
 *  Wed Jun 20 11:13:08 MET DST 2001, v 1.4.5: Fixed missing blinking cursor in 8bpp, code cleaning, memory erase IOCTL.
 *  Mon Jun 18 16:00:27 CEST 2001, v 1.4.4: Depth 12 (RGBA 4444) support, code cleaning.
 *  Fri Jun 15 13:53:01 CEST 2001, v 1.4.3: Removed warnings, depth 15 support, add 'depth' option.
 *  Thu Jun 14 10:13:52 MET DST 2001, v 1.4.2: Fixed depth switching bug, preliminary 15bpp (RGB5551) support.
 *  Thu Apr 12 11:16:45 MET DST 2001, v 1.4.1B: Doc updates.
 *  Fri Apr  6 11:12:53 MET DST 2001, v 1.4.1: Configure.help, minor cleanup
 *  Thu Mar 29 10:56:50 MET DST 2001, v 1.4.0: Module & module options support (note: linux patch changed, 2.2.19 added).
 *  Thu Mar 15 15:30:31 MET 2001, v 1.3.2: Fixed mirroring bug on little-endian.
 *  Wed Mar 14 21:25:54 CET 2001, v 1.3.1: Fixed bug in BlockMove (_bmov).
 *  Tue Mar 13 10:53:19 MET 2001, v 1.3.0: Character drawing hardware support (in all width between 1 and 16), fixes.
 *  Thu Mar  8 10:20:16 MET 2001, v 1.2.2: Better J2000 support, "font:" option.
 *  Tue Mar  6 21:25:04 CET 2001, v 1.2.1: Better acceleration support.
 *  Mon Mar  5 21:54:17 CET 2001, v 1.2.0: Partial acceleration support (clear & bmove)
 *  Mon Mar  5 12:52:15 CET 2001, v 1.1.3: Big pan_display fix.
 *  Sun Mar  4 22:21:50 CET 2001, v 1.1.2: (numerous) bug fixes.
 *  Fri Mar  2 15:54:07 CET 2001, v 1.1.1: Might have Appian J2000 support, resource mangement in 2.4
 *  Wed Feb 28 18:21:35 CET 2001, v 1.1.0: Might have multiple boards support (added, but not yest tested)
 *  Tue Feb 27 17:31:12 CET 2001, v 1.0.6: fixes boot-time mode select, add more default mode
 *  Tue Feb 27 14:01:36 CET 2001, v 1.0.5: fixes (1.0.4 was broken for 2.2), cleaning up
 *  Mon Feb 26 23:17:36 CET 2001, v 1.0.4: preliminary 2.4.x support, dropped (useless on pm3) partial product, more OF fix
 *  Mon Feb 26 20:59:05 CET 2001, v 1.0.3: No more shadow register (and wasted memory), endianess fix, use OF-preset resolution by default
 *  Wed Feb 21 22:09:30 CET 2001, v 1.0.2: Code cleaning for future multiboard support, better OF support, bugs fix
 *  Wed Feb 21 19:58:56 CET 2001, v 1.0.1: OpenFirmware support, fixed memory detection, better debug support, code cleaning
 *  Wed Feb 21 14:47:06 CET 2001, v 1.0.0: First working version
 */

#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/tty.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/fb.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/ioport.h>

#include <video/fbcon.h>
#include <video/fbcon-mfb.h>
#include <video/fbcon-cfb2.h>
#include <video/fbcon-cfb4.h>
#include <video/fbcon-cfb8.h>
#include <video/fbcon-cfb16.h>
#include <video/fbcon-cfb24.h>
#include <video/fbcon-cfb32.h>
#include <video/pm3fb.h>

#include <asm/io.h>
#include <asm/uaccess.h>

#ifdef CONFIG_FB_OF
#include <asm/prom.h>
#endif

/* ************************************* */
/* ***** The various "global" data ***** */
/* ************************************* */

/* those will need a rework for multiple board support */
/* Driver name */
static const char permedia3_name[16] = "Permedia3";

/* the fb_par struct, mandatory */
struct pm3fb_par {
        u32 pixclock;           /* pixclock in KHz */

        u32 width;              /* width of virtual screen */
        u32 height;             /* height of virtual screen */

        u32 hsstart;            /* horiz. sync start */
        u32 hsend;              /* horiz. sync end */
        u32 hbend;              /* horiz. blank end (also gate end) */
        u32 htotal;             /* total width (w/ sync & blank) */

        u32 vsstart;            /* vert. sync start */
        u32 vsend;              /* vert. sync end */
        u32 vbend;              /* vert. blank end */
        u32 vtotal;             /* total height (w/ sync & blank) */

        u32 stride;             /* screen stride */
        u32 base;               /* screen base (xoffset+yoffset) in 128 bits unit */
        /* NOTE : unlike other pm3 stuff above, stored *after* shiftbpp. don't ask */
        u32 depth;              /* screen depth (8, 12, 15, 16 or 32) */
        u32 video;              /* video control (hsync,vsync) */
};

/* memory timings */
struct pm3fb_timings
{
        unsigned long caps;
        unsigned long timings;
        unsigned long control;
        unsigned long refresh;
        unsigned long powerdown;
};
typedef enum pm3fb_timing_result { pm3fb_timing_ok, pm3fb_timing_problem, pm3fb_timing_retry } pm3fb_timing_result;
#define PM3FB_UNKNOWN_TIMING_VALUE ((unsigned long)-1)
#define PM3FB_UNKNOWN_TIMINGS { PM3FB_UNKNOWN_TIMING_VALUE, PM3FB_UNKNOWN_TIMING_VALUE, PM3FB_UNKNOWN_TIMING_VALUE, PM3FB_UNKNOWN_TIMING_VALUE, PM3FB_UNKNOWN_TIMING_VALUE }

/* the fb_info struct, mandatory */
struct pm3fb_info {
        struct fb_info_gen gen;
        unsigned long board_num; /* internal board number */
        unsigned long use_current;
        struct pm3fb_par *current_par;
        struct pci_dev *dev;    /* PCI device */
#ifdef SUPPORT_FB_OF
        struct device_node *dn; /* OF node for the PCI device */
#endif /* SUPPORT_FB_OF */
        unsigned long board_type; /* index in the cardbase */
        unsigned char *fb_base; /* framebuffer memory base */
        u32 fb_size;            /* framebuffer memory size */
        unsigned char *p_fb;    /* physical address of frame buffer */
        unsigned char *v_fb;    /* virtual address of frame buffer */
        unsigned char *pIOBase; /* physical address of registers region, must be rg_base or rg_base+PM2_REGS_SIZE depending on the host endianness */
        unsigned char *vIOBase; /* address of registers after ioremap() */
        struct {
                u8 transp;
                u8 red;
                u8 green;
                u8 blue;
        } palette[256];
        union {
#ifdef FBCON_HAS_CFB16
                u16 cmap12[16]; /* RGBA 4444 */
                u16 cmap15[16]; /* RGBA 5551 */
                u16 cmap16[16]; /* RGBA 5650 */
#endif
#ifdef FBCON_HAS_CFB32
                u32 cmap32[16];
#endif
        } cmap;
        struct pm3fb_timings memt;
};

/* regular resolution database*/
static struct {
        char name[16];
        struct pm3fb_par user_mode;
} mode_base[] __initdata = {
        {
                "default-800x600", {
        49500, 800, 600, 16, 96, 256, 1056, 1, 4, 25, 625,
                            800, 0, 8,
                            PM3VideoControl_ENABLE |
                            PM3VideoControl_HSYNC_ACTIVE_HIGH
                            |
                            PM3VideoControl_VSYNC_ACTIVE_HIGH
                            | PM3VideoControl_PIXELSIZE_8BIT}}, {
                "1024x768-74", {
        78752, 1024, 768, 32, 128, 304, 1328, 1, 4, 38,
                            806, 1024, 0, 8,
                            PM3VideoControl_ENABLE |
                            PM3VideoControl_HSYNC_ACTIVE_HIGH
                            |
                            PM3VideoControl_VSYNC_ACTIVE_HIGH
                            | PM3VideoControl_PIXELSIZE_8BIT}}, {
                "1024x768-74-32", {
                        78752, 1024, 768, 32, 128, 304, 1328, 1, 4, 38,
                        806, 1024, 0, 32,
                        PM3VideoControl_ENABLE |
                        PM3VideoControl_HSYNC_ACTIVE_HIGH
                        |
                        PM3VideoControl_VSYNC_ACTIVE_HIGH
                        | PM3VideoControl_PIXELSIZE_32BIT}},
/* Generated mode : "1600x1024", for the SGI 1600SW flat panel*/
        {
                "SGI1600SW", {
                        108000, 1600, 1024, 16, 56, 104, 1704, 3, 6, 32,
                        1056, 1600, 0, 8,
                        PM3VideoControl_ENABLE|
                        PM3VideoControl_HSYNC_ACTIVE_LOW|PM3VideoControl_VSYNC_ACTIVE_LOW|
                        PM3VideoControl_PIXELSIZE_32BIT}}, 
/* ##### auto-generated mode, by fbtimings2pm3 */
/* Generated mode : "640x480-60" */
        {
                "640x480-60", {
        25174, 640, 480, 16, 112, 160, 800, 10, 12, 45,
                            525, 640, 0, 8,
                            PM3VideoControl_ENABLE |
                            PM3VideoControl_HSYNC_ACTIVE_LOW
                            |
                            PM3VideoControl_VSYNC_ACTIVE_LOW
                            | PM3VideoControl_PIXELSIZE_8BIT}},
/* Generated mode : "640x480-72" */
        {
                "640x480-72", {
        31199, 640, 480, 24, 64, 192, 832, 9, 12, 40, 520,
                            640, 0, 8,
                            PM3VideoControl_ENABLE |
                            PM3VideoControl_HSYNC_ACTIVE_LOW
                            |
                            PM3VideoControl_VSYNC_ACTIVE_LOW
                            | PM3VideoControl_PIXELSIZE_8BIT}},
/* Generated mode : "640x480-75" */
        {
                "640x480-75", {
        31499, 640, 480, 16, 80, 200, 840, 1, 4, 20, 500,
                            640, 0, 8,
                            PM3VideoControl_ENABLE |
                            PM3VideoControl_HSYNC_ACTIVE_LOW
                            |
                            PM3VideoControl_VSYNC_ACTIVE_LOW
                            | PM3VideoControl_PIXELSIZE_8BIT}},
/* Generated mode : "640x480-90" */
        {
                "640x480-90", {
        39909, 640, 480, 32, 72, 192, 832, 25, 39, 53, 533,
                            640, 0, 8,
                            PM3VideoControl_ENABLE |
                            PM3VideoControl_HSYNC_ACTIVE_LOW
                            |
                            PM3VideoControl_VSYNC_ACTIVE_LOW
                            | PM3VideoControl_PIXELSIZE_8BIT}},
/* Generated mode : "640x480-100" */
        {
                "640x480-100", {
        44899, 640, 480, 32, 160, 208, 848, 22, 34, 51,
                            531, 640, 0, 8,
                            PM3VideoControl_ENABLE |
                            PM3VideoControl_HSYNC_ACTIVE_LOW
                            |
                            PM3VideoControl_VSYNC_ACTIVE_LOW
                            | PM3VideoControl_PIXELSIZE_8BIT}},
/* Generated mode : "800x600-48-lace" */
/* INTERLACED NOT SUPPORTED
  {"800x600-48-lace", {35999, 800, 600, 80, 208, 264, 1064, 11, 23, 102, 702, 800, 0, 8, PM3VideoControl_ENABLE|PM3VideoControl_HSYNC_ACTIVE_HIGH|PM3VideoControl_VSYNC_ACTIVE_HIGH|PM3VideoControl_PIXELSIZE_8BIT}}, 
   INTERLACED NOT SUPPORTED */
/* Generated mode : "800x600-56" */
        {
                "800x600-56", {
        35999, 800, 600, 24, 96, 224, 1024, 1, 3, 25, 625,
                            800, 0, 8,
                            PM3VideoControl_ENABLE |
                            PM3VideoControl_HSYNC_ACTIVE_HIGH
                            |
                            PM3VideoControl_VSYNC_ACTIVE_HIGH
                            | PM3VideoControl_PIXELSIZE_8BIT}},
/* Generated mode : "800x600-60" */
        {
                "800x600-60", {
        40000, 800, 600, 40, 168, 256, 1056, 1, 5, 28, 628,
                            800, 0, 8,
                            PM3VideoControl_ENABLE |
                            PM3VideoControl_HSYNC_ACTIVE_HIGH
                            |
                            PM3VideoControl_VSYNC_ACTIVE_HIGH
                            | PM3VideoControl_PIXELSIZE_8BIT}},
/* Generated mode : "800x600-70" */
        {
                "800x600-70", {
        44899, 800, 600, 24, 168, 208, 1008, 9, 21, 36,
                            636, 800, 0, 8,
                            PM3VideoControl_ENABLE |
                            PM3VideoControl_HSYNC_ACTIVE_HIGH
                            |
                            PM3VideoControl_VSYNC_ACTIVE_LOW
                            | PM3VideoControl_PIXELSIZE_8BIT}},
/* Generated mode : "800x600-72" */
        {
                "800x600-72", {
        50000, 800, 600, 56, 176, 240, 1040, 37, 43, 66,
                            666, 800, 0, 8,
                            PM3VideoControl_ENABLE |
                            PM3VideoControl_HSYNC_ACTIVE_HIGH
                            |
                            PM3VideoControl_VSYNC_ACTIVE_HIGH
                            | PM3VideoControl_PIXELSIZE_8BIT}},
/* Generated mode : "800x600-75" */
        {
                "800x600-75", {
        49497, 800, 600, 16, 96, 256, 1056, 1, 4, 25, 625,
                            800, 0, 8,
                            PM3VideoControl_ENABLE |
                            PM3VideoControl_HSYNC_ACTIVE_HIGH
                            |
                            PM3VideoControl_VSYNC_ACTIVE_HIGH
                            | PM3VideoControl_PIXELSIZE_8BIT}},
/* Generated mode : "800x600-90" */
        {
                "800x600-90", {
        56637, 800, 600, 8, 72, 192, 992, 8, 19, 35, 635,
                            800, 0, 8,
                            PM3VideoControl_ENABLE |
                            PM3VideoControl_HSYNC_ACTIVE_HIGH
                            |
                            PM3VideoControl_VSYNC_ACTIVE_HIGH
                            | PM3VideoControl_PIXELSIZE_8BIT}},
/* Generated mode : "800x600-100", from /etc/fb.modes */
/* DISABLED, hsstart == 0
        {
                "800x600-100", {
        67499, 800, 600, 0, 64, 280, 1080, 7, 11, 25, 625,
                            800, 0, 8,
                            PM3VideoControl_ENABLE |
                            PM3VideoControl_HSYNC_ACTIVE_HIGH
                            |
                            PM3VideoControl_VSYNC_ACTIVE_HIGH
                            | PM3VideoControl_PIXELSIZE_8BIT}},
*/
/* Generated mode : "800x600-100", from ??? */
        {
                "800x600-100", {
                        69650, 800, 600, 64, 128, 288, 1088, 4, 10, 40, 640, 800, 0, 8,
                        PM3VideoControl_ENABLE|PM3VideoControl_HSYNC_ACTIVE_LOW|
                        PM3VideoControl_VSYNC_ACTIVE_LOW|PM3VideoControl_PIXELSIZE_8BIT}},
/* Generated mode : "1024x768-43-lace" */
/* INTERLACED NOT SUPPORTED
  {"1024x768-43-lace", {44899, 1024, 768, 8, 184, 240, 1264, 1, 9, 49, 817, 1024, 0, 8, PM3VideoControl_ENABLE|PM3VideoControl_HSYNC_ACTIVE_HIGH|PM3VideoControl_VSYNC_ACTIVE_HIGH|PM3VideoControl_PIXELSIZE_8BIT}}, 
   INTERLACED NOT SUPPORTED */
/* Generated mode : "1024x768-60" */
        {
                "1024x768-60", {
        64998, 1024, 768, 24, 160, 320, 1344, 3, 9, 38,
                            806, 1024, 0, 8,
                            PM3VideoControl_ENABLE |
                            PM3VideoControl_HSYNC_ACTIVE_LOW
                            |
                            PM3VideoControl_VSYNC_ACTIVE_LOW
                            | PM3VideoControl_PIXELSIZE_8BIT}},
/* Generated mode : "1024x768-70" */
        {
                "1024x768-70", {
        74996, 1024, 768, 24, 160, 304, 1328, 3, 9, 38,
                            806, 1024, 0, 8,
                            PM3VideoControl_ENABLE |
                            PM3VideoControl_HSYNC_ACTIVE_LOW
                            |
                            PM3VideoControl_VSYNC_ACTIVE_LOW
                            | PM3VideoControl_PIXELSIZE_8BIT}},
/* Generated mode : "1024x768-72" */
        {
                "1024x768-72", {
        74996, 10224, 768, 24, 160, 264, 10488, 3, 9, 38,
                            806, 10224, 0, 8,
                            PM3VideoControl_ENABLE |
                            PM3VideoControl_HSYNC_ACTIVE_LOW
                            |
                            PM3VideoControl_VSYNC_ACTIVE_LOW
                            | PM3VideoControl_PIXELSIZE_8BIT}},
/* Generated mode : "1024x768-75" */
        {
                "1024x768-75", {
        78746, 1024, 768, 16, 112, 288, 1312, 1, 4, 32,
                            800, 1024, 0, 8,
                            PM3VideoControl_ENABLE |
                            PM3VideoControl_HSYNC_ACTIVE_HIGH
                            |
                            PM3VideoControl_VSYNC_ACTIVE_HIGH
                            | PM3VideoControl_PIXELSIZE_8BIT}},
/* Generated mode : "1024x768-90" */
        {
                "1024x768-90", {
        100000, 1024, 768, 0, 96, 288, 1312, 21, 36, 77,
                            845, 1024, 0, 8,
                            PM3VideoControl_ENABLE |
                            PM3VideoControl_HSYNC_ACTIVE_LOW
                            |
                            PM3VideoControl_VSYNC_ACTIVE_LOW
                            | PM3VideoControl_PIXELSIZE_8BIT}},
/* Generated mode : "1024x768-100", from /etc/fb.modes */
/* DISABLED, vsstart == 0
        {
                "1024x768-100", {
        109998, 1024, 768, 0, 88, 368, 1392, 0, 8, 24, 792,
                            1024, 0, 8,
                            PM3VideoControl_ENABLE |
                            PM3VideoControl_HSYNC_ACTIVE_LOW
                            |
                            PM3VideoControl_VSYNC_ACTIVE_LOW
                            | PM3VideoControl_PIXELSIZE_8BIT}},
*/
/* Generated mode : "1024x768-100", from ??? */
        {
                "1024x768-100", {
                        115500, 1024, 768, 32, 224, 416, 1440, 3, 13, 34, 802, 1024, 0, 8,
                        PM3VideoControl_ENABLE|PM3VideoControl_HSYNC_ACTIVE_LOW|
                        PM3VideoControl_VSYNC_ACTIVE_LOW|PM3VideoControl_PIXELSIZE_8BIT}},
/* Generated mode : "1152x864-43-lace" */
/* INTERLACED NOT SUPPORTED
  {"1152x864-43-lace", {64998, 1152, 864, 72, 200, 264, 1416, 78, 87, 191, 1055, 1152, 0, 8, PM3VideoControl_ENABLE|PM3VideoControl_HSYNC_ACTIVE_HIGH|PM3VideoControl_VSYNC_ACTIVE_HIGH|PM3VideoControl_PIXELSIZE_8BIT}}, 
   INTERLACED NOT SUPPORTED */
/* Generated mode : "1152x864-47-lace" */
/* INTERLACED NOT SUPPORTED
  {"1152x864-47-lace", {64998, 1152, 864, 88, 216, 296, 1448, 30, 39, 83, 947, 1152, 0, 8, PM3VideoControl_ENABLE|PM3VideoControl_HSYNC_ACTIVE_HIGH|PM3VideoControl_VSYNC_ACTIVE_HIGH|PM3VideoControl_PIXELSIZE_8BIT}}, 
   INTERLACED NOT SUPPORTED */
/* Generated mode : "1152x864-60" */
        {
                "1152x864-60", {
        80000, 1152, 864, 64, 176, 304, 1456, 6, 11, 52,
                            916, 1152, 0, 8,
                            PM3VideoControl_ENABLE |
                            PM3VideoControl_HSYNC_ACTIVE_HIGH
                            |
                            PM3VideoControl_VSYNC_ACTIVE_HIGH
                            | PM3VideoControl_PIXELSIZE_8BIT}},
/* Generated mode : "1152x864-70" */
        {
                "1152x864-70", {
        100000, 1152, 864, 40, 192, 360, 1512, 13, 24, 81,
                            945, 1152, 0, 8,
                            PM3VideoControl_ENABLE |
                            PM3VideoControl_HSYNC_ACTIVE_HIGH
                            |
                            PM3VideoControl_VSYNC_ACTIVE_HIGH
                            | PM3VideoControl_PIXELSIZE_8BIT}},
/* Generated mode : "1152x864-75" */
        {
                "1152x864-75", {
        109998, 1152, 864, 24, 168, 312, 1464, 45, 53, 138,
                            1002, 1152, 0, 8,
                            PM3VideoControl_ENABLE |
                            PM3VideoControl_HSYNC_ACTIVE_HIGH
                            |
                            PM3VideoControl_VSYNC_ACTIVE_HIGH
                            | PM3VideoControl_PIXELSIZE_8BIT}},
/* Generated mode : "1152x864-80" */
        {
                "1152x864-80", {
        109998, 1152, 864, 16, 128, 288, 1440, 30, 37, 94,
                            958, 1152, 0, 8,
                            PM3VideoControl_ENABLE |
                            PM3VideoControl_HSYNC_ACTIVE_HIGH
                            |
                            PM3VideoControl_VSYNC_ACTIVE_HIGH
                            | PM3VideoControl_PIXELSIZE_8BIT}},
/* Generated mode : "1280x1024-43-lace" */
/* INTERLACED NOT SUPPORTED
  {"1280x1024-43-lace", {80000, 1024, 1024, 80, 160, 320, 1344, 50, 60, 125, 1149, 1024, 0, 8, PM3VideoControl_ENABLE|PM3VideoControl_HSYNC_ACTIVE_HIGH|PM3VideoControl_VSYNC_ACTIVE_HIGH|PM3VideoControl_PIXELSIZE_8BIT}}, 
   INTERLACED NOT SUPPORTED */
/* Generated mode : "1280x1024-47-lace" */
/* INTERLACED NOT SUPPORTED
  {"1280x1024-47-lace", {80000, 1280, 1024, 80, 160, 320, 1600, 1, 11, 29, 1053, 1280, 0, 8, PM3VideoControl_ENABLE|PM3VideoControl_HSYNC_ACTIVE_HIGH|PM3VideoControl_VSYNC_ACTIVE_HIGH|PM3VideoControl_PIXELSIZE_8BIT}}, 
   INTERLACED NOT SUPPORTED */
/* Generated mode : "1280x1024-60" */
        {
                "1280x1024-60", {
        107991, 1280, 1024, 48, 160, 408, 1688, 1, 4, 42,
                            1066, 1280, 0, 8,
                            PM3VideoControl_ENABLE |
                            PM3VideoControl_HSYNC_ACTIVE_HIGH
                            |
                            PM3VideoControl_VSYNC_ACTIVE_HIGH
                            | PM3VideoControl_PIXELSIZE_8BIT}},
/* Generated mode : "1280x1024-70" */
        {
                "1280x1024-70", {
        125992, 1280, 1024, 80, 192, 408, 1688, 1, 6, 42,
                            1066, 1280, 0, 8,
                            PM3VideoControl_ENABLE |
                            PM3VideoControl_HSYNC_ACTIVE_HIGH
                            |
                            PM3VideoControl_VSYNC_ACTIVE_HIGH
                            | PM3VideoControl_PIXELSIZE_8BIT}},
/* Generated mode : "1280x1024-74" */
        {
                "1280x1024-74", {
        134989, 1280, 1024, 32, 176, 432, 1712, 0, 30, 40,
                            1064, 1280, 0, 8,
                            PM3VideoControl_ENABLE |
                            PM3VideoControl_HSYNC_ACTIVE_HIGH
                            |
                            PM3VideoControl_VSYNC_ACTIVE_HIGH
                            | PM3VideoControl_PIXELSIZE_8BIT}},
/* Generated mode : "1280x1024-75" */
        {
                "1280x1024-75", {
        134989, 1280, 1024, 16, 160, 408, 1688, 1, 4, 42,
                            1066, 1280, 0, 8,
                            PM3VideoControl_ENABLE |
                            PM3VideoControl_HSYNC_ACTIVE_HIGH
                            |
                            PM3VideoControl_VSYNC_ACTIVE_HIGH
                            | PM3VideoControl_PIXELSIZE_8BIT}},
/* Generated mode : "1600x1200-60" */
        {
                "1600x1200-60", {
        155981, 1600, 1200, 32, 192, 448, 2048, 10, 18, 70,
                            1270, 1600, 0, 8,
                            PM3VideoControl_ENABLE |
                            PM3VideoControl_HSYNC_ACTIVE_LOW
                            |
                            PM3VideoControl_VSYNC_ACTIVE_LOW
                            | PM3VideoControl_PIXELSIZE_8BIT}},
/* Generated mode : "1600x1200-66" */
        {
                "1600x1200-66", {
        171998, 1600, 1200, 40, 176, 480, 2080, 3, 6, 53,
                            1253, 1600, 0, 8,
                            PM3VideoControl_ENABLE |
                            PM3VideoControl_HSYNC_ACTIVE_LOW
                            |
                            PM3VideoControl_VSYNC_ACTIVE_LOW
                            | PM3VideoControl_PIXELSIZE_8BIT}},
/* Generated mode : "1600x1200-76" */
        {
                "1600x1200-76", {
        197980, 1600, 1200, 40, 176, 480, 2080, 3, 8, 50,
                            1250, 1600, 0, 8,
                            PM3VideoControl_ENABLE |
                            PM3VideoControl_HSYNC_ACTIVE_LOW
                            |
                            PM3VideoControl_VSYNC_ACTIVE_LOW
                            | PM3VideoControl_PIXELSIZE_8BIT}},
/* ##### end of auto-generated mode */
        {
        "\0",}
};

/* more mandatory stuff (see skeletonfb.c + framebuffer driver HOWTO */
static struct pm3fb_info fb_info[PM3_MAX_BOARD];
static struct pm3fb_par current_par[PM3_MAX_BOARD];
static int current_par_valid[PM3_MAX_BOARD];
/* to allow explicit filtering of board */
short bus[PM3_MAX_BOARD];
short slot[PM3_MAX_BOARD];
short func[PM3_MAX_BOARD];
short disable[PM3_MAX_BOARD];
short noaccel[PM3_MAX_BOARD];
char fontn[PM3_MAX_BOARD][PM3_FONTNAME_SIZE];
short depth[PM3_MAX_BOARD];
short flatpanel[PM3_MAX_BOARD];
static struct display disp[PM3_MAX_BOARD];
static char g_options[PM3_OPTIONS_SIZE] __initdata = "pm3fb,dummy";
short printtimings = 0;
short forcesize[PM3_MAX_BOARD];

/* ********************* */
/* ***** prototype ***** */
/* ********************* */
/* card-specific */
static void pm3fb_j2000_setup(struct pm3fb_info *l_fb_info);
/* permedia3-specific */
static pm3fb_timing_result pm3fb_preserve_memory_timings(struct pm3fb_info *l_fb_info);
static pm3fb_timing_result pm3fb_try_memory_timings(struct pm3fb_info *l_fb_info);
static void pm3fb_write_memory_timings(struct pm3fb_info *l_fb_info);
static unsigned long pm3fb_read_dac_reg(struct pm3fb_info *l_fb_info,
                                        unsigned long r);
static unsigned long pm3fb_CalculateClock(struct pm3fb_info *l_fb_info, unsigned long reqclock, /* In kHz units */
                                          unsigned long refclock,       /* In kHz units */
                                          unsigned char *prescale,      /* ClkPreScale */
                                          unsigned char *feedback,      /* ClkFeedBackScale */
                                          unsigned char *postscale
                                          /* ClkPostScale */ );
static void pm3fb_clear_memory(struct pm3fb_info *l_fb_info, u32 cc);
static void pm3fb_clear_colormap(struct pm3fb_info *l_fb_info, unsigned char r, unsigned char g, unsigned char b);
static void pm3fb_common_init(struct pm3fb_info *l_fb_info);
static int pm3fb_Shiftbpp(struct pm3fb_info *l_fb_info,
                          unsigned long depth, int v);
static int pm3fb_Unshiftbpp(struct pm3fb_info *l_fb_info,
                            unsigned long depth, int v);
static void pm3fb_mapIO(struct pm3fb_info *l_fb_info);
static void pm3fb_unmapIO(struct pm3fb_info *l_fb_info);
#if defined(PM3FB_MASTER_DEBUG) && (PM3FB_MASTER_DEBUG >= 2)
static void pm3fb_show_cur_mode(struct pm3fb_info *l_fb_info);
#endif
static void pm3fb_show_cur_timing(struct pm3fb_info *l_fb_info);
static void pm3fb_write_mode(struct pm3fb_info *l_fb_info);
static void pm3fb_read_mode(struct pm3fb_info *l_fb_info,
                            struct pm3fb_par *curpar);
static unsigned long pm3fb_size_memory(struct pm3fb_info *l_fb_info);
/* accelerated permedia3-specific */
#ifdef PM3FB_USE_ACCEL
static void pm3fb_wait_pm3(struct pm3fb_info *l_fb_info);
static void pm3fb_init_engine(struct pm3fb_info *l_fb_info);
#ifdef FBCON_HAS_CFB32
static void pm3fb_cfb32_clear(struct vc_data *conp,
                              struct display *p,
                              int sy, int sx, int height, int width);
static void pm3fb_cfb32_clear_margins(struct vc_data *conp,
                                      struct display *p, int bottom_only);
#endif /* FBCON_HAS_CFB32 */
#ifdef FBCON_HAS_CFB16
static void pm3fb_cfb16_clear(struct vc_data *conp,
                              struct display *p,
                              int sy, int sx, int height, int width);
static void pm3fb_cfb16_clear_margins(struct vc_data *conp,
                                      struct display *p, int bottom_only);
#endif /* FBCON_HAS_CFB16 */
#ifdef FBCON_HAS_CFB8
static void pm3fb_cfb8_clear(struct vc_data *conp,
                             struct display *p,
                             int sy, int sx, int height, int width);
static void pm3fb_cfb8_clear_margins(struct vc_data *conp,
                                     struct display *p, int bottom_only);
#endif /* FBCON_HAS_CFB8 */
#if defined(FBCON_HAS_CFB8) || defined(FBCON_HAS_CFB16) || defined(FBCON_HAS_CFB32)
static void pm3fb_cfbX_bmove(struct display *p,
                             int sy, int sx,
                             int dy, int dx, int height, int width);
static void pm3fb_cfbX_putc(struct vc_data *conp, struct display *p,
                            int c, int yy, int xx);
static void pm3fb_cfbX_putcs(struct vc_data *conp, struct display *p,
                             const unsigned short *s, int count, int yy,
                             int xx);
static void pm3fb_cfbX_revc(struct display *p, int xx, int yy);
#endif /* FBCON_HAS_CFB8 || FBCON_HAS_CFB16 || FBCON_HAS_CFB32 */
#endif /* PM3FB_USE_ACCEL */
/* pre-init */
static void pm3fb_mode_setup(char *mode, unsigned long board_num);
static void pm3fb_pciid_setup(char *pciid, unsigned long board_num);
static char *pm3fb_boardnum_setup(char *options, unsigned long *bn);
static void pm3fb_real_setup(char *options);
/* fbdev */
static int pm3fb_encode_fix(struct fb_fix_screeninfo *fix,
                            const void *par, struct fb_info_gen *info);
static int pm3fb_decode_var(const struct fb_var_screeninfo *var,
                            void *par, struct fb_info_gen *info);
static void pm3fb_encode_depth(struct fb_var_screeninfo *var, long d);
static int pm3fb_encode_var(struct fb_var_screeninfo *var,
                            const void *par, struct fb_info_gen *info);
static void pm3fb_get_par(void *par, struct fb_info_gen *info);
static void pm3fb_set_par(const void *par, struct fb_info_gen *info);
static void pm3fb_set_color(struct pm3fb_info *l_fb_info,
                            unsigned char regno, unsigned char r,
                            unsigned char g, unsigned char b);
static int pm3fb_getcolreg(unsigned regno, unsigned *red, unsigned *green,
                           unsigned *blue, unsigned *transp,
                           struct fb_info *info);
static int pm3fb_setcolreg(unsigned regno, unsigned red, unsigned green,
                           unsigned blue, unsigned transp,
                           struct fb_info *info);
static int pm3fb_blank(int blank_mode, struct fb_info_gen *info);
static void pm3fb_set_disp(const void *par, struct display *disp,
                           struct fb_info_gen *info);
static void pm3fb_detect(void);
static int pm3fb_pan_display(const struct fb_var_screeninfo *var,
                             struct fb_info_gen *info);
static int pm3fb_ioctl(struct inode *inode, struct file *file,
                       u_int cmd, u_long arg, int con,
                       struct fb_info *info);


/* the struct that hold them together */
#ifdef KERNEL_2_2
struct fbgen_hwswitch pm3fb_switch = {
        pm3fb_detect, pm3fb_encode_fix, pm3fb_decode_var, pm3fb_encode_var,
        pm3fb_get_par, pm3fb_set_par, pm3fb_getcolreg, pm3fb_setcolreg,
        pm3fb_pan_display, pm3fb_blank, pm3fb_set_disp
};

static struct fb_ops pm3fb_ops = {
        fbgen_get_fix, fbgen_get_var, fbgen_set_var,
        fbgen_get_cmap, fbgen_set_cmap, fbgen_pan_display, pm3fb_ioctl,
            NULL, NULL
};
#endif /* KERNEL_2_2 */
#if (defined KERNEL_2_4) || (defined KERNEL_2_5)
struct fbgen_hwswitch pm3fb_switch = {
        pm3fb_detect, pm3fb_encode_fix, pm3fb_decode_var, pm3fb_encode_var,
        pm3fb_get_par, pm3fb_set_par, pm3fb_getcolreg, 
        pm3fb_pan_display, pm3fb_blank, pm3fb_set_disp
};

static struct fb_ops pm3fb_ops = {
        .owner =        THIS_MODULE,
        .fb_get_fix =   fbgen_get_fix,
        .fb_get_var =   fbgen_get_var,
        .fb_set_var =   fbgen_set_var,
        .fb_get_cmap =  fbgen_get_cmap,
        .fb_set_cmap =  fbgen_set_cmap,
        .fb_setcolreg = pm3fb_setcolreg,
        .fb_pan_display =fbgen_pan_display,
        .fb_blank =     fbgen_blank,
        .fb_ioctl =     pm3fb_ioctl,
};
#endif /* KERNEL_2_4 or KERNEL_2_5 */
#ifdef PM3FB_USE_ACCEL
#ifdef FBCON_HAS_CFB32
static struct display_switch pm3fb_cfb32 = {
        fbcon_cfb32_setup, pm3fb_cfbX_bmove, pm3fb_cfb32_clear,
        pm3fb_cfbX_putc, pm3fb_cfbX_putcs, pm3fb_cfbX_revc,
        NULL /* cursor() */ , NULL /* set_font() */ ,
        pm3fb_cfb32_clear_margins,
        FONTWIDTHRANGE(1, 16)   /* true only if accelerated... */
};
#endif /* FBCON_HAS_CFB32 */
#ifdef FBCON_HAS_CFB16
static struct display_switch pm3fb_cfb16 = {
        fbcon_cfb16_setup, pm3fb_cfbX_bmove, pm3fb_cfb16_clear,
        pm3fb_cfbX_putc, pm3fb_cfbX_putcs, pm3fb_cfbX_revc,
        NULL /* cursor() */ , NULL /* set_font() */ ,
        pm3fb_cfb16_clear_margins,
        FONTWIDTHRANGE(1, 16)   /* true only if accelerated... */
};
#endif /* FBCON_HAS_CFB16 */
#ifdef FBCON_HAS_CFB8
static struct display_switch pm3fb_cfb8 = {
        fbcon_cfb8_setup, pm3fb_cfbX_bmove, pm3fb_cfb8_clear,
        pm3fb_cfbX_putc, pm3fb_cfbX_putcs, pm3fb_cfbX_revc,
        NULL /* cursor() */ , NULL /* set_font() */ ,
        pm3fb_cfb8_clear_margins,
        FONTWIDTHRANGE(1, 16)   /* true only if accelerated... */
};
#endif /* FBCON_HAS_CFB8 */
#endif /* PM3FB_USE_ACCEL */

/* ****************************** */
/* ***** card-specific data ***** */
/* ****************************** */
struct pm3fb_card_timings {
        unsigned long memsize; /* 0 for last value (i.e. default) */
        struct pm3fb_timings memt;
};

static struct pm3fb_card_timings t_FormacProFormance3[] = {
        { 16, { 0x02e311b8, 0x06100205, 0x08000002, 0x00000079, 0x00000000} },
        { 0, { 0x02e311b8, 0x06100205, 0x08000002, 0x00000079, 0x00000000} } /* from 16 MB PF3 */
};

static struct pm3fb_card_timings t_AppianJeronimo2000[] = {
        { 32, { 0x02e311B8, 0x07424905, 0x0c000003, 0x00000061, 0x00000000} },
        { 0, { 0x02e311B8, 0x07424905, 0x0c000003, 0x00000061, 0x00000000} } /* from 32MB J2000 */
};

static struct pm3fb_card_timings t_3DLabsOxygenVX1[] = {
        { 32, { 0x30e311b8, 0x08501204, 0x08000002, 0x0000006b, 0x00000000} },
        { 0, { 0x30e311b8, 0x08501204, 0x08000002, 0x0000006b, 0x00000000} } /* from 32MB VX1 */
};

static struct {
                char cardname[32]; /* recognized card name */
                u16 subvendor; /* subvendor of the card */
                u16 subdevice; /* subdevice of the card */
                u8  func; /* function of the card to which the extra init apply */
                void (*specific_setup)(struct pm3fb_info *l_fb_info); /* card/func specific setup, done before _any_ FB access */
        struct pm3fb_card_timings *c_memt; /* defauls timings for the boards */
} cardbase[] = {
        { "Unknown Permedia3 board", 0xFFFF, 0xFFFF, 0xFF, NULL, NULL },
        { "Appian Jeronimo 2000 head 1", 0x1097, 0x3d32, 1, NULL,
          t_AppianJeronimo2000
        },
        { "Appian Jeronimo 2000 head 2", 0x1097, 0x3d32, 2, pm3fb_j2000_setup,
          t_AppianJeronimo2000
        },
        { "Formac ProFormance 3", PCI_VENDOR_ID_3DLABS, 0x000a, 0, NULL, /* Formac use 3DLabs ID ?!? */
          t_FormacProFormance3
        },
        { "3DLabs Permedia3 Create!", PCI_VENDOR_ID_3DLABS, 0x0127, 0, NULL, NULL },
        { "3DLabs Oxygen VX1 PCI", PCI_VENDOR_ID_3DLABS, 0x0121, 0, NULL,
          t_3DLabsOxygenVX1
        },
        { "3DLabs Oxygen VX1 AGP", PCI_VENDOR_ID_3DLABS, 0x0125, 0, NULL, NULL },
        { "3DLabs Oxygen VX1-16 AGP", PCI_VENDOR_ID_3DLABS, 0x0140, 0, NULL, NULL },
        { "3DLabs Oxygen VX1-1600SW PCI", PCI_VENDOR_ID_3DLABS, 0x0800, 0, NULL, NULL },
        { "\0", 0x0, 0x0, 0, NULL, NULL }
};

/* ********************************** */
/* ***** card-specific function ***** */
/* ********************************** */
static void pm3fb_j2000_setup(struct pm3fb_info *l_fb_info)
{       /* the appian j2000 require more initialization of the second head */
        /* l_fb_info must point to the _second_ head of the J2000 */
        
        DTRACE;

        l_fb_info->memt = t_AppianJeronimo2000[0].memt; /* 32 MB, first and only j2000 ? */
        
        pm3fb_write_memory_timings(l_fb_info);
}

/* *************************************** */
/* ***** permedia3-specific function ***** */
/* *************************************** */
static pm3fb_timing_result pm3fb_preserve_memory_timings(struct pm3fb_info *l_fb_info)
{
        l_fb_info->memt.caps = PM3_READ_REG(PM3LocalMemCaps);
        l_fb_info->memt.timings = PM3_READ_REG(PM3LocalMemTimings);
        l_fb_info->memt.control = PM3_READ_REG(PM3LocalMemControl);
        l_fb_info->memt.refresh = PM3_READ_REG(PM3LocalMemRefresh);
        l_fb_info->memt.powerdown = PM3_READ_REG(PM3LocalMemPowerDown);

        if ((l_fb_info->memt.caps == PM3FB_UNKNOWN_TIMING_VALUE) ||
            (l_fb_info->memt.timings == PM3FB_UNKNOWN_TIMING_VALUE) ||
            (l_fb_info->memt.control == PM3FB_UNKNOWN_TIMING_VALUE) ||
            (l_fb_info->memt.refresh == PM3FB_UNKNOWN_TIMING_VALUE) ||
            (l_fb_info->memt.powerdown == PM3FB_UNKNOWN_TIMING_VALUE))
        {
                printk(KERN_ERR "pm3fb: invalid memory timings in permedia3 board #%ld\n", l_fb_info->board_num);
                return(pm3fb_try_memory_timings(l_fb_info));
        }
        return(pm3fb_timing_ok);
}

static pm3fb_timing_result pm3fb_try_memory_timings(struct pm3fb_info *l_fb_info)
{
        if (cardbase[l_fb_info->board_type].c_memt)
        {
                int i = 0, done = 0;
                while (!done)
                {
                        if ((cardbase[l_fb_info->board_type].c_memt[i].memsize == l_fb_info->fb_size)
                            || !(cardbase[l_fb_info->board_type].c_memt[i].memsize))
                        { /* will use the 0-sized timings by default */
                                done = 1;
                                l_fb_info->memt = cardbase[l_fb_info->board_type].c_memt[i].memt;
                                printk(KERN_WARNING  "pm3fb: trying to use predefined memory timings for permedia3 board #%ld (%s, %ld MB)\n",
                                       l_fb_info->board_num,
                                       cardbase[l_fb_info->board_type].cardname,
                                       cardbase[l_fb_info->board_type].c_memt[i].memsize);
                                pm3fb_write_memory_timings(l_fb_info);
                                return(pm3fb_timing_retry);
                        }
                        i++;
                }
        } else
                return(pm3fb_timing_problem);
        return(pm3fb_timing_ok);
}

static void pm3fb_write_memory_timings(struct pm3fb_info *l_fb_info)
{
        unsigned char m, n, p;
        unsigned long clockused;
        
        PM3_SLOW_WRITE_REG(PM3LocalMemCaps, l_fb_info->memt.caps);
        PM3_SLOW_WRITE_REG(PM3LocalMemTimings, l_fb_info->memt.timings);
        PM3_SLOW_WRITE_REG(PM3LocalMemControl, l_fb_info->memt.control);
        PM3_SLOW_WRITE_REG(PM3LocalMemRefresh, l_fb_info->memt.refresh);
        PM3_SLOW_WRITE_REG(PM3LocalMemPowerDown, l_fb_info->memt.powerdown);

        clockused =
            pm3fb_CalculateClock(l_fb_info, 2 * 105000, PM3_REF_CLOCK, &m,
                                 &n, &p);

        PM3_WRITE_DAC_REG(PM3RD_KClkPreScale, m);
        PM3_WRITE_DAC_REG(PM3RD_KClkFeedbackScale, n);
        PM3_WRITE_DAC_REG(PM3RD_KClkPostScale, p);
        PM3_WRITE_DAC_REG(PM3RD_KClkControl,
                          PM3RD_KClkControl_STATE_RUN |
                          PM3RD_KClkControl_SOURCE_PLL |
                          PM3RD_KClkControl_ENABLE);
        PM3_WRITE_DAC_REG(PM3RD_MClkControl,
                          PM3RD_MClkControl_STATE_RUN |
                          PM3RD_MClkControl_SOURCE_KCLK |
                          PM3RD_MClkControl_ENABLE);
        PM3_WRITE_DAC_REG(PM3RD_SClkControl,
                          PM3RD_SClkControl_STATE_RUN |
                          PM3RD_SClkControl_SOURCE_PCLK |
                          PM3RD_SClkControl_ENABLE);
}

static unsigned long pm3fb_read_dac_reg(struct pm3fb_info *l_fb_info,
                                        unsigned long r)
{
        DASSERT((l_fb_info->vIOBase != (unsigned char *) (-1)),
                "l_fb_info->vIOBase mapped in read dac reg\n");
        PM3_SET_INDEX(r);
        mb();
        return (PM3_READ_REG(PM3RD_IndexedData));
}

/* Calculating various clock parameter */
static unsigned long pm3fb_CalculateClock(struct pm3fb_info *l_fb_info, unsigned long reqclock, /* In kHz units */
                                          unsigned long refclock,       /* In kHz units */
                                          unsigned char *prescale,      /* ClkPreScale */
                                          unsigned char *feedback,      /* ClkFeedBackScale */
                                          unsigned char *postscale
                                          /* ClkPostScale */ )
{
        int f, pre, post;
        unsigned long freq;
        long freqerr = 1000;
        unsigned long actualclock = 0;

        DTRACE;

        for (f = 1; f < 256; f++) {
                for (pre = 1; pre < 256; pre++) {
                        for (post = 0; post < 5; post++) {
                                freq =
                                    ((2 * refclock * f) /
                                     (pre * (1 << post)));
                                if ((reqclock > freq - freqerr)
                                    && (reqclock < freq + freqerr)) {
                                        freqerr =
                                            (reqclock >
                                             freq) ? reqclock -
                                            freq : freq - reqclock;
                                        *feedback = f;
                                        *prescale = pre;
                                        *postscale = post;
                                        actualclock = freq;
                                }
                        }
                }
        }

        return (actualclock);
}

static int pm3fb_Shiftbpp(struct pm3fb_info *l_fb_info,
                          unsigned long depth, int v)
{
        DTRACE;
        
        switch (depth) {
        case 8:
                return (v >> 4);
        case 12:
        case 15:
        case 16:
                return (v >> 3);
        case 32:
                return (v >> 2);
        }
        DPRINTK(1, "Unsupported depth %ld\n", depth);
        return (0);
}

static int pm3fb_Unshiftbpp(struct pm3fb_info *l_fb_info,
                            unsigned long depth, int v)
{
        DTRACE;

        switch (depth) {
        case 8:
                return (v << 4);
        case 12:        
        case 15:
        case 16:
                return (v << 3);
        case 32:
                return (v << 2);
        }
        DPRINTK(1, "Unsupported depth %ld\n", depth);
        return (0);
}

static void pm3fb_mapIO(struct pm3fb_info *l_fb_info)
{
        DTRACE;

        l_fb_info->vIOBase =
            ioremap((unsigned long) l_fb_info->pIOBase, PM3_REGS_SIZE);
        l_fb_info->v_fb =
            ioremap((unsigned long) l_fb_info->p_fb, l_fb_info->fb_size);
        DPRINTK(2, "IO mapping : IOBase %lx / %lx, fb %lx / %lx\n",
                (unsigned long) l_fb_info->pIOBase,
                (unsigned long) l_fb_info->vIOBase,
                (unsigned long) l_fb_info->p_fb,
                (unsigned long) l_fb_info->v_fb);
}

static void pm3fb_unmapIO(struct pm3fb_info *l_fb_info)
{
        DTRACE;

        iounmap(l_fb_info->vIOBase);
        iounmap(l_fb_info->v_fb);
        l_fb_info->vIOBase = (unsigned char *) -1;
        l_fb_info->v_fb = (unsigned char *) -1;
}

#if defined(PM3FB_MASTER_DEBUG) && (PM3FB_MASTER_DEBUG >= 2)
static void pm3fb_show_cur_mode(struct pm3fb_info *l_fb_info)
{
        DPRINTK(2, "PM3Aperture0: 0x%08x\n", PM3_READ_REG(PM3Aperture0));
        DPRINTK(2, "PM3Aperture1: 0x%08x\n", PM3_READ_REG(PM3Aperture1));
        DPRINTK(2, "PM3ByAperture1Mode: 0x%08x\n",
                PM3_READ_REG(PM3ByAperture1Mode));
        DPRINTK(2, "PM3ByAperture2Mode: 0x%08x\n",
                PM3_READ_REG(PM3ByAperture2Mode));
        DPRINTK(2, "PM3ChipConfig: 0x%08x\n", PM3_READ_REG(PM3ChipConfig));
        DPRINTK(2, "PM3FIFODis: 0x%08x\n", PM3_READ_REG(PM3FIFODis));
        DPRINTK(2, "PM3HTotal: 0x%08x\n", PM3_READ_REG(PM3HTotal));

        DPRINTK(2, "PM3HbEnd: 0x%08x\n", PM3_READ_REG(PM3HbEnd));
        DPRINTK(2, "PM3HgEnd: 0x%08x\n", PM3_READ_REG(PM3HgEnd));
        DPRINTK(2, "PM3HsEnd: 0x%08x\n", PM3_READ_REG(PM3HsEnd));
        DPRINTK(2, "PM3HsStart: 0x%08x\n", PM3_READ_REG(PM3HsStart));
        DPRINTK(2, "PM3MemBypassWriteMask: 0x%08x\n",
                PM3_READ_REG(PM3MemBypassWriteMask));
        DPRINTK(2, "PM3RD_IndexControl: 0x%08x\n",
                PM3_READ_REG(PM3RD_IndexControl));
        DPRINTK(2, "PM3ScreenBase: 0x%08x\n", PM3_READ_REG(PM3ScreenBase));
        DPRINTK(2, "PM3ScreenStride: 0x%08x\n",
                PM3_READ_REG(PM3ScreenStride));
        DPRINTK(2, "PM3VClkCtl: 0x%08x\n", PM3_READ_REG(PM3VClkCtl));
        DPRINTK(2, "PM3VTotal: 0x%08x\n", PM3_READ_REG(PM3VTotal));
        DPRINTK(2, "PM3VbEnd: 0x%08x\n", PM3_READ_REG(PM3VbEnd));
        DPRINTK(2, "PM3VideoControl: 0x%08x\n",
                PM3_READ_REG(PM3VideoControl));
        DPRINTK(2, "PM3VsEnd: 0x%08x\n", PM3_READ_REG(PM3VsEnd));
        DPRINTK(2, "PM3VsStart: 0x%08x\n", PM3_READ_REG(PM3VsStart));

        DPRINTK(2, "PM3RD_ColorFormat: %ld\n",
                PM3_READ_DAC_REG(PM3RD_ColorFormat));
        DPRINTK(2, "PM3RD_DACControl: %ld\n",
                PM3_READ_DAC_REG(PM3RD_DACControl));
        DPRINTK(2, "PM3RD_DClk0FeedbackScale: %ld\n",
                PM3_READ_DAC_REG(PM3RD_DClk0FeedbackScale));
        DPRINTK(2, "PM3RD_DClk0PostScale: %ld\n",
                PM3_READ_DAC_REG(PM3RD_DClk0PostScale));
        DPRINTK(2, "PM3RD_DClk0PreScale: %ld\n",
                PM3_READ_DAC_REG(PM3RD_DClk0PreScale));
        DPRINTK(2, "[not set] PM3RD_IndexControl: %ld\n",
                PM3_READ_DAC_REG(PM3RD_IndexControl));
        DPRINTK(2, "PM3RD_MiscControl: %ld\n",
                PM3_READ_DAC_REG(PM3RD_MiscControl));
        DPRINTK(2, "PM3RD_PixelSize: %ld\n",
                PM3_READ_DAC_REG(PM3RD_PixelSize));
        DPRINTK(2, "PM3RD_SyncControl: %ld\n",
                PM3_READ_DAC_REG(PM3RD_SyncControl));
}

#endif /* defined(PM3FB_MASTER_DEBUG) && (PM3FB_MASTER_DEBUG >= 2) */
static void pm3fb_show_cur_timing(struct pm3fb_info *l_fb_info)
{
        u16 subvendor, subdevice;

        if ((!pci_read_config_word
             (l_fb_info->dev, PCI_SUBSYSTEM_VENDOR_ID, &subvendor))
            &&
            (!pci_read_config_word
             (l_fb_info->dev, PCI_SUBSYSTEM_ID, &subdevice))) {
                /* well, nothing... */
        } else {
                subvendor = subdevice = (u16)-1;
        }

        printk(KERN_INFO "pm3fb: memory timings for board #%ld (subvendor: 0x%hx, subdevice: 0x%hx)\n", l_fb_info->board_num, subvendor, subdevice);
        printk(KERN_INFO " PM3LocalMemCaps: 0x%08x\n",
               PM3_READ_REG(PM3LocalMemCaps));
        printk(KERN_INFO " PM3LocalMemTimings: 0x%08x\n",
               PM3_READ_REG(PM3LocalMemTimings));
        printk(KERN_INFO " PM3LocalMemControl: 0x%08x\n",
               PM3_READ_REG(PM3LocalMemControl));
        printk(KERN_INFO " PM3LocalMemRefresh: 0x%08x\n",
               PM3_READ_REG(PM3LocalMemRefresh));
        printk(KERN_INFO " PM3LocalMemPowerDown: 0x%08x\n",
               PM3_READ_REG(PM3LocalMemPowerDown));
}

/* write the mode to registers */
static void pm3fb_write_mode(struct pm3fb_info *l_fb_info)
{
        char tempsync = 0x00, tempmisc = 0x00;
        DTRACE;

        PM3_SLOW_WRITE_REG(PM3MemBypassWriteMask, 0xffffffff);
        PM3_SLOW_WRITE_REG(PM3Aperture0, 0x00000000);
        PM3_SLOW_WRITE_REG(PM3Aperture1, 0x00000000);
        PM3_SLOW_WRITE_REG(PM3FIFODis, 0x00000007);

        PM3_SLOW_WRITE_REG(PM3HTotal,
                           pm3fb_Shiftbpp(l_fb_info,
                                          l_fb_info->current_par->depth,
                                          l_fb_info->current_par->htotal -
                                          1));
        PM3_SLOW_WRITE_REG(PM3HsEnd,
                           pm3fb_Shiftbpp(l_fb_info,
                                          l_fb_info->current_par->depth,
                                          l_fb_info->current_par->hsend));
        PM3_SLOW_WRITE_REG(PM3HsStart,
                           pm3fb_Shiftbpp(l_fb_info,
                                          l_fb_info->current_par->depth,
                                          l_fb_info->current_par->
                                          hsstart));
        PM3_SLOW_WRITE_REG(PM3HbEnd,
                           pm3fb_Shiftbpp(l_fb_info,
                                          l_fb_info->current_par->depth,
                                          l_fb_info->current_par->hbend));
        PM3_SLOW_WRITE_REG(PM3HgEnd,
                           pm3fb_Shiftbpp(l_fb_info,
                                          l_fb_info->current_par->depth,
                                          l_fb_info->current_par->hbend));
        PM3_SLOW_WRITE_REG(PM3ScreenStride,
                           pm3fb_Shiftbpp(l_fb_info,
                                          l_fb_info->current_par->depth,
                                          l_fb_info->current_par->stride));
        PM3_SLOW_WRITE_REG(PM3VTotal, l_fb_info->current_par->vtotal - 1);
        PM3_SLOW_WRITE_REG(PM3VsEnd, l_fb_info->current_par->vsend - 1);
        PM3_SLOW_WRITE_REG(PM3VsStart,
                           l_fb_info->current_par->vsstart - 1);
        PM3_SLOW_WRITE_REG(PM3VbEnd, l_fb_info->current_par->vbend);

        switch (l_fb_info->current_par->depth) {
        case 8:
                PM3_SLOW_WRITE_REG(PM3ByAperture1Mode,
                                   PM3ByApertureMode_PIXELSIZE_8BIT);
                PM3_SLOW_WRITE_REG(PM3ByAperture2Mode,
                                   PM3ByApertureMode_PIXELSIZE_8BIT);
                break;

        case 12:
        case 15:
        case 16:
#ifndef __BIG_ENDIAN
                PM3_SLOW_WRITE_REG(PM3ByAperture1Mode,
                                   PM3ByApertureMode_PIXELSIZE_16BIT);
                PM3_SLOW_WRITE_REG(PM3ByAperture2Mode,
                                   PM3ByApertureMode_PIXELSIZE_16BIT);
#else
                PM3_SLOW_WRITE_REG(PM3ByAperture1Mode,
                                   PM3ByApertureMode_PIXELSIZE_16BIT |
                                   PM3ByApertureMode_BYTESWAP_BADC);
                PM3_SLOW_WRITE_REG(PM3ByAperture2Mode,
                                   PM3ByApertureMode_PIXELSIZE_16BIT |
                                   PM3ByApertureMode_BYTESWAP_BADC);
#endif /* ! __BIG_ENDIAN */
                break;

        case 32:
#ifndef __BIG_ENDIAN
                PM3_SLOW_WRITE_REG(PM3ByAperture1Mode,
                                   PM3ByApertureMode_PIXELSIZE_32BIT);
                PM3_SLOW_WRITE_REG(PM3ByAperture2Mode,
                                   PM3ByApertureMode_PIXELSIZE_32BIT);
#else
                PM3_SLOW_WRITE_REG(PM3ByAperture1Mode,
                                   PM3ByApertureMode_PIXELSIZE_32BIT |
                                   PM3ByApertureMode_BYTESWAP_DCBA);
                PM3_SLOW_WRITE_REG(PM3ByAperture2Mode,
                                   PM3ByApertureMode_PIXELSIZE_32BIT |
                                   PM3ByApertureMode_BYTESWAP_DCBA);
#endif /* ! __BIG_ENDIAN */
                break;

        default:
                DPRINTK(1, "Unsupported depth %d\n",
                        l_fb_info->current_par->depth);
                break;
        }

        /*
         * Oxygen VX1 - it appears that setting PM3VideoControl and
         * then PM3RD_SyncControl to the same SYNC settings undoes
         * any net change - they seem to xor together.  Only set the
         * sync options in PM3RD_SyncControl.  --rmk
         */
        {
                unsigned int video = l_fb_info->current_par->video;

                video &= ~(PM3VideoControl_HSYNC_MASK |
                           PM3VideoControl_VSYNC_MASK);
                video |= PM3VideoControl_HSYNC_ACTIVE_HIGH |
                         PM3VideoControl_VSYNC_ACTIVE_HIGH;
                PM3_SLOW_WRITE_REG(PM3VideoControl, video);
        }
        PM3_SLOW_WRITE_REG(PM3VClkCtl,
                           (PM3_READ_REG(PM3VClkCtl) & 0xFFFFFFFC));
        PM3_SLOW_WRITE_REG(PM3ScreenBase, l_fb_info->current_par->base);
        PM3_SLOW_WRITE_REG(PM3ChipConfig,
                           (PM3_READ_REG(PM3ChipConfig) & 0xFFFFFFFD));

        {
                unsigned char m;        /* ClkPreScale */
                unsigned char n;        /* ClkFeedBackScale */
                unsigned char p;        /* ClkPostScale */
                (void)pm3fb_CalculateClock(l_fb_info, l_fb_info->current_par->pixclock, PM3_REF_CLOCK, &m, &n, &p);

                DPRINTK(2,
                        "Pixclock: %d, Pre: %d, Feedback: %d, Post: %d\n",
                        l_fb_info->current_par->pixclock, (int) m, (int) n,
                        (int) p);

                PM3_WRITE_DAC_REG(PM3RD_DClk0PreScale, m);
                PM3_WRITE_DAC_REG(PM3RD_DClk0FeedbackScale, n);
                PM3_WRITE_DAC_REG(PM3RD_DClk0PostScale, p);
        }
        /*
           PM3_WRITE_DAC_REG(PM3RD_IndexControl, 0x00);
         */
        /*
           PM3_SLOW_WRITE_REG(PM3RD_IndexControl, 0x00);
         */
        if ((l_fb_info->current_par->video & PM3VideoControl_HSYNC_MASK) ==
            PM3VideoControl_HSYNC_ACTIVE_HIGH)
                tempsync |= PM3RD_SyncControl_HSYNC_ACTIVE_HIGH;
        if ((l_fb_info->current_par->video & PM3VideoControl_VSYNC_MASK) ==
            PM3VideoControl_VSYNC_ACTIVE_HIGH)
                tempsync |= PM3RD_SyncControl_VSYNC_ACTIVE_HIGH;
        
        PM3_WRITE_DAC_REG(PM3RD_SyncControl, tempsync);
        DPRINTK(2, "PM3RD_SyncControl: %d\n", tempsync);
        
        if (flatpanel[l_fb_info->board_num])
        {
                PM3_WRITE_DAC_REG(PM3RD_DACControl, PM3RD_DACControl_BLANK_PEDESTAL_ENABLE);
                PM3_WAIT(2);
                PM3_WRITE_REG(PM3VSConfiguration, 0x06);
                PM3_WRITE_REG(0x5a00, 1 << 14); /* black magic... */
                tempmisc = PM3RD_MiscControl_VSB_OUTPUT_ENABLE;
        }
        else
                PM3_WRITE_DAC_REG(PM3RD_DACControl, 0x00);

        switch (l_fb_info->current_par->depth) {
        case 8:
                PM3_WRITE_DAC_REG(PM3RD_PixelSize,
                                  PM3RD_PixelSize_8_BIT_PIXELS);
                PM3_WRITE_DAC_REG(PM3RD_ColorFormat,
                                  PM3RD_ColorFormat_CI8_COLOR |
                                  PM3RD_ColorFormat_COLOR_ORDER_BLUE_LOW);
                tempmisc |= PM3RD_MiscControl_HIGHCOLOR_RES_ENABLE;
                break;
        case 12:
                PM3_WRITE_DAC_REG(PM3RD_PixelSize,
                                  PM3RD_PixelSize_16_BIT_PIXELS);
                PM3_WRITE_DAC_REG(PM3RD_ColorFormat,
                                  PM3RD_ColorFormat_4444_COLOR |
                                  PM3RD_ColorFormat_COLOR_ORDER_BLUE_LOW |
                                  PM3RD_ColorFormat_LINEAR_COLOR_EXT_ENABLE);
                tempmisc |= PM3RD_MiscControl_DIRECTCOLOR_ENABLE |
                        PM3RD_MiscControl_HIGHCOLOR_RES_ENABLE;
                break;          
        case 15:
                PM3_WRITE_DAC_REG(PM3RD_PixelSize,
                                  PM3RD_PixelSize_16_BIT_PIXELS);
                PM3_WRITE_DAC_REG(PM3RD_ColorFormat,
                                  PM3RD_ColorFormat_5551_FRONT_COLOR |
                                  PM3RD_ColorFormat_COLOR_ORDER_BLUE_LOW |
                                  PM3RD_ColorFormat_LINEAR_COLOR_EXT_ENABLE);
                tempmisc |= PM3RD_MiscControl_DIRECTCOLOR_ENABLE |
                        PM3RD_MiscControl_HIGHCOLOR_RES_ENABLE;
                break;          
        case 16:
                PM3_WRITE_DAC_REG(PM3RD_PixelSize,
                                  PM3RD_PixelSize_16_BIT_PIXELS);
                PM3_WRITE_DAC_REG(PM3RD_ColorFormat,
                                  PM3RD_ColorFormat_565_FRONT_COLOR |
                                  PM3RD_ColorFormat_COLOR_ORDER_BLUE_LOW |
                                  PM3RD_ColorFormat_LINEAR_COLOR_EXT_ENABLE);
                tempmisc |= PM3RD_MiscControl_DIRECTCOLOR_ENABLE |
                        PM3RD_MiscControl_HIGHCOLOR_RES_ENABLE;
                break;
        case 32:
                PM3_WRITE_DAC_REG(PM3RD_PixelSize,
                                  PM3RD_PixelSize_32_BIT_PIXELS);
                PM3_WRITE_DAC_REG(PM3RD_ColorFormat,
                                  PM3RD_ColorFormat_8888_COLOR |
                                  PM3RD_ColorFormat_COLOR_ORDER_BLUE_LOW);
                tempmisc |= PM3RD_MiscControl_DIRECTCOLOR_ENABLE |
                        PM3RD_MiscControl_HIGHCOLOR_RES_ENABLE;
                break;
        }
        PM3_WRITE_DAC_REG(PM3RD_MiscControl, tempmisc);
        
        PM3_SHOW_CUR_MODE;
}

static void pm3fb_read_mode(struct pm3fb_info *l_fb_info,
                            struct pm3fb_par *curpar)
{
        unsigned long pixsize1, pixsize2, clockused;
        unsigned long pre, feedback, post;

        DTRACE;

        clockused = PM3_READ_REG(PM3VClkCtl);

        switch (clockused) {
        case 3:
                pre = PM3_READ_DAC_REG(PM3RD_DClk3PreScale);
                feedback = PM3_READ_DAC_REG(PM3RD_DClk3FeedbackScale);
                post = PM3_READ_DAC_REG(PM3RD_DClk3PostScale);

                DPRINTK(2,
                        "DClk3 parameter: Pre: %ld, Feedback: %ld, Post: %ld ; giving pixclock: %ld\n",
                        pre, feedback, post, PM3_SCALE_TO_CLOCK(pre,
                                                                feedback,
                                                                post));
                break;
        case 2:
                pre = PM3_READ_DAC_REG(PM3RD_DClk2PreScale);
                feedback = PM3_READ_DAC_REG(PM3RD_DClk2FeedbackScale);
                post = PM3_READ_DAC_REG(PM3RD_DClk2PostScale);

                DPRINTK(2,
                        "DClk2 parameter: Pre: %ld, Feedback: %ld, Post: %ld ; giving pixclock: %ld\n",
                        pre, feedback, post, PM3_SCALE_TO_CLOCK(pre,
                                                                feedback,
                                                                post));
                break;
        case 1:
                pre = PM3_READ_DAC_REG(PM3RD_DClk1PreScale);
                feedback = PM3_READ_DAC_REG(PM3RD_DClk1FeedbackScale);
                post = PM3_READ_DAC_REG(PM3RD_DClk1PostScale);

                DPRINTK(2,
                        "DClk1 parameter: Pre: %ld, Feedback: %ld, Post: %ld ; giving pixclock: %ld\n",
                        pre, feedback, post, PM3_SCALE_TO_CLOCK(pre,
                                                                feedback,
                                                                post));
                break;
        case 0:
                pre = PM3_READ_DAC_REG(PM3RD_DClk0PreScale);
                feedback = PM3_READ_DAC_REG(PM3RD_DClk0FeedbackScale);
                post = PM3_READ_DAC_REG(PM3RD_DClk0PostScale);

                DPRINTK(2,
                        "DClk0 parameter: Pre: %ld, Feedback: %ld, Post: %ld ; giving pixclock: %ld\n",
                        pre, feedback, post, PM3_SCALE_TO_CLOCK(pre,
                                                                feedback,
                                                                post));
                break;
        default:
                pre = feedback = post = 0;
                DPRINTK(1, "Unknowk D clock used : %ld\n", clockused);
                break;
        }

        curpar->pixclock = PM3_SCALE_TO_CLOCK(pre, feedback, post);

        pixsize1 =
            PM3ByApertureMode_PIXELSIZE_MASK &
            (PM3_READ_REG(PM3ByAperture1Mode));
        pixsize2 =
            PM3ByApertureMode_PIXELSIZE_MASK &
            (PM3_READ_REG(PM3ByAperture2Mode));

        DASSERT((pixsize1 == pixsize2),
                "pixsize the same in both aperture\n");

        if (pixsize1 & PM3ByApertureMode_PIXELSIZE_32BIT)
                curpar->depth = 32;
        else if (pixsize1 & PM3ByApertureMode_PIXELSIZE_16BIT)
        {
                curpar->depth = 16;
        }
        else
                curpar->depth = 8;

        /* not sure if I need to add one on the next ; it give better result with */
        curpar->htotal =
            pm3fb_Unshiftbpp(l_fb_info, curpar->depth,
                             1 + PM3_READ_REG(PM3HTotal));
        curpar->hsend =
            pm3fb_Unshiftbpp(l_fb_info, curpar->depth,
                             PM3_READ_REG(PM3HsEnd));
        curpar->hsstart =
            pm3fb_Unshiftbpp(l_fb_info, curpar->depth,
                             PM3_READ_REG(PM3HsStart));
        curpar->hbend =
            pm3fb_Unshiftbpp(l_fb_info, curpar->depth,
                             PM3_READ_REG(PM3HbEnd));

        curpar->stride =
            pm3fb_Unshiftbpp(l_fb_info, curpar->depth,
                             PM3_READ_REG(PM3ScreenStride));

        curpar->vtotal = 1 + PM3_READ_REG(PM3VTotal);
        curpar->vsend = 1 + PM3_READ_REG(PM3VsEnd);
        curpar->vsstart = 1 + PM3_READ_REG(PM3VsStart);
        curpar->vbend = PM3_READ_REG(PM3VbEnd);

        curpar->video = PM3_READ_REG(PM3VideoControl);

        curpar->base = PM3_READ_REG(PM3ScreenBase);
        curpar->width = curpar->htotal - curpar->hbend; /* make virtual == displayed resolution */
        curpar->height = curpar->vtotal - curpar->vbend;

        DPRINTK(2, "Found : %d * %d, %d Khz, stride is %08x\n",
                curpar->width, curpar->height, curpar->pixclock,
                curpar->stride);
}

static unsigned long pm3fb_size_memory(struct pm3fb_info *l_fb_info)
{
        unsigned long memsize = 0, tempBypass, i, temp1, temp2;
        u16 subvendor, subdevice;
        pm3fb_timing_result ptr;

        DTRACE;

        l_fb_info->fb_size = 64 * 1024 * 1024;  /* pm3 aperture always 64 MB */
        pm3fb_mapIO(l_fb_info); /* temporary map IO */

        DASSERT((l_fb_info->vIOBase != NULL),
                "IO successfully mapped before mem detect\n");
        DASSERT((l_fb_info->v_fb != NULL),
                "FB successfully mapped before mem detect\n");

        /* card-specific stuff, *before* accessing *any* FB memory */
        if ((!pci_read_config_word
             (l_fb_info->dev, PCI_SUBSYSTEM_VENDOR_ID, &subvendor))
            &&
            (!pci_read_config_word
             (l_fb_info->dev, PCI_SUBSYSTEM_ID, &subdevice))) {
                i = 0; l_fb_info->board_type = 0;
                while ((cardbase[i].cardname[0]) && !(l_fb_info->board_type)) {
                        if ((cardbase[i].subvendor == subvendor) &&
                            (cardbase[i].subdevice == subdevice) &&
                            (cardbase[i].func == PCI_FUNC(l_fb_info->dev->devfn))) {
                                DPRINTK(2, "Card #%ld is an %s\n",
                                        l_fb_info->board_num,
                                        cardbase[i].cardname);
                                if (cardbase[i].specific_setup)
                                        cardbase[i].specific_setup(l_fb_info);
                                l_fb_info->board_type = i;
                        }
                        i++;
                }
                if (!l_fb_info->board_type) {
                        DPRINTK(1, "Card #%ld is an unknown 0x%04x / 0x%04x\n",
                                l_fb_info->board_num, subvendor, subdevice);
                }
        } else {
                printk(KERN_ERR "pm3fb: Error: pci_read_config_word failed, board #%ld\n",
                       l_fb_info->board_num);
        }

        if (printtimings)
                pm3fb_show_cur_timing(l_fb_info);
        
        /* card-specific setup is done, we preserve the final
           memory timing for future reference */
        if ((ptr = pm3fb_preserve_memory_timings(l_fb_info)) == pm3fb_timing_problem) { /* memory timings were wrong ! oops.... */
                return(0);
        }
        
        tempBypass = PM3_READ_REG(PM3MemBypassWriteMask);

        DPRINTK(2, "PM3MemBypassWriteMask was: 0x%08lx\n", tempBypass);

        PM3_SLOW_WRITE_REG(PM3MemBypassWriteMask, 0xFFFFFFFF);

        /* pm3 split up memory, replicates, and do a lot of nasty stuff IMHO ;-) */
        for (i = 0; i < 32; i++) {
#ifdef KERNEL_2_2
#ifdef MUST_BYTESWAP
                writel(__swab32(i * 0x00345678),
                       (l_fb_info->v_fb + (i * 1048576)));
#else
                writel(i * 0x00345678, (l_fb_info->v_fb + (i * 1048576)));
#endif
                mb();
#ifdef MUST_BYTESWAP
                temp1 = __swab32(readl((l_fb_info->v_fb + (i * 1048576))));
#else
                temp1 = readl((l_fb_info->v_fb + (i * 1048576)));
#endif
#endif  /* KERNEL_2_2 */
#if (defined KERNEL_2_4) || (defined KERNEL_2_5)
                fb_writel(i * 0x00345678,
                          (l_fb_info->v_fb + (i * 1048576)));
                mb();
                temp1 = fb_readl((l_fb_info->v_fb + (i * 1048576)));
#endif /* KERNEL_2_4 or KERNEL_2_5 */
                /* Let's check for wrapover, write will fail at 16MB boundary */
                if (temp1 == (i * 0x00345678))
                        memsize = i;
                else
                        break;
        }

        DPRINTK(2, "First detect pass already got %ld MB\n", memsize + 1);

        if (memsize == i) {
                for (i = 0; i < 32; i++) {
                        /* Clear first 32MB ; 0 is 0, no need to byteswap */
                        writel(0x0000000,
                               (l_fb_info->v_fb + (i * 1048576)));
                        mb();
                }

                for (i = 32; i < 64; i++) {
#ifdef KERNEL_2_2
#ifdef MUST_BYTESWAP
                        writel(__swab32(i * 0x00345678),
                               (l_fb_info->v_fb + (i * 1048576)));
#else
                        writel(i * 0x00345678,
                               (l_fb_info->v_fb + (i * 1048576)));
#endif
                        mb();
#ifdef MUST_BYTESWAP
                        temp1 =
                            __swab32(readl
                                     ((l_fb_info->v_fb + (i * 1048576))));
                        temp2 =
                            __swab32(readl
                                     ((l_fb_info->v_fb +
                                       ((i - 32) * 1048576))));
#else
                        temp1 = readl((l_fb_info->v_fb + (i * 1048576)));
                        temp2 =
                            readl((l_fb_info->v_fb +
                                   ((i - 32) * 1048576)));
#endif
#endif /* KERNEL_2_2 */
#if (defined KERNEL_2_4) || (defined KERNEL_2_5)
                        fb_writel(i * 0x00345678,
                                  (l_fb_info->v_fb + (i * 1048576)));
                        mb();
                        temp1 =
                            fb_readl((l_fb_info->v_fb + (i * 1048576)));
                        temp2 =
                            fb_readl((l_fb_info->v_fb +
                                      ((i - 32) * 1048576)));
#endif /* KERNEL_2_4 or KERNEL_2_5 */
                        if ((temp1 == (i * 0x00345678)) && (temp2 == 0))        /* different value, different RAM... */
                                memsize = i;
                        else
                                break;
                }
        }

        DPRINTK(2, "Second detect pass got %ld MB\n", memsize + 1);

        PM3_SLOW_WRITE_REG(PM3MemBypassWriteMask, tempBypass);

        pm3fb_unmapIO(l_fb_info);
        memsize = 1048576 * (memsize + 1);

        DPRINTK(2, "Returning 0x%08lx bytes\n", memsize);

        if (forcesize[l_fb_info->board_num] && ((forcesize[l_fb_info->board_num] * 1048576) != memsize))
        {
                printk(KERN_WARNING "pm3fb: mismatch between probed (%ld MB) and specified (%hd MB) memory size, using SPECIFIED !\n", memsize, forcesize[l_fb_info->board_num]);
                memsize = 1048576 * forcesize[l_fb_info->board_num];
        }
        
        l_fb_info->fb_size = memsize;
        
        if (ptr == pm3fb_timing_retry)
        {
                printk(KERN_WARNING "pm3fb: retrying memory timings check");
                if (pm3fb_try_memory_timings(l_fb_info) == pm3fb_timing_problem)
                        return(0);
        }
        
        return (memsize);
}

static void pm3fb_clear_memory(struct pm3fb_info *l_fb_info, u32 cc)
{
        int i;

        DTRACE;

        for (i = 0; i < (l_fb_info->fb_size / sizeof(u32)) ; i++) /* clear entire FB memory to black */
        {
#ifdef KERNEL_2_2
#ifdef MUST_BYTESWAP
                writel(__swab32(cc), (l_fb_info->v_fb + (i * sizeof(u32))));
#else
                writel(cc, (l_fb_info->v_fb + (i * sizeof(u32))));
#endif
#endif
#if (defined KERNEL_2_4) || (defined KERNEL_2_5)
                fb_writel(cc, (l_fb_info->v_fb + (i * sizeof(u32))));
#endif
        }
}

static void pm3fb_clear_colormap(struct pm3fb_info *l_fb_info, unsigned char r, unsigned char g, unsigned char b)
{
        int i;

        DTRACE;

        for (i = 0; i < 256 ; i++) /* fill color map with white */
                pm3fb_set_color(l_fb_info, i, r, g, b);

}

/* common initialisation */
static void pm3fb_common_init(struct pm3fb_info *l_fb_info)
{
        DTRACE;

        DPRINTK(2, "Initializing board #%ld @ %lx\n", l_fb_info->board_num,
                (unsigned long) l_fb_info);

        strcpy(l_fb_info->gen.info.modename, permedia3_name);
        disp[l_fb_info->board_num].scrollmode = 0;      /* SCROLL_YNOMOVE; *//* 0 means "let fbcon choose" */
        l_fb_info->gen.parsize = sizeof(struct pm3fb_par);
        l_fb_info->gen.info.changevar = NULL;
        l_fb_info->gen.info.fbops = &pm3fb_ops;
        l_fb_info->gen.info.disp = &(disp[l_fb_info->board_num]);
        if (fontn[l_fb_info->board_num][0])
                strcpy(l_fb_info->gen.info.fontname,
                       fontn[l_fb_info->board_num]);
        l_fb_info->gen.info.switch_con = &fbgen_switch;
        l_fb_info->gen.info.updatevar = &fbgen_update_var;      /* */
        l_fb_info->gen.info.flags = FBINFO_FLAG_DEFAULT;

        pm3fb_mapIO(l_fb_info);

        pm3fb_clear_memory(l_fb_info, 0);
        pm3fb_clear_colormap(l_fb_info, 0, 0, 0);

        (void) fbgen_get_var(&(disp[l_fb_info->board_num]).var, -1,
                             &l_fb_info->gen.info);

        if (depth[l_fb_info->board_num]) /* override mode-defined depth */
        {
                pm3fb_encode_depth(&(disp[l_fb_info->board_num]).var, depth[l_fb_info->board_num]);
                (disp[l_fb_info->board_num]).var.bits_per_pixel = depth2bpp(depth[l_fb_info->board_num]);
        }

        (void) fbgen_do_set_var(&(disp[l_fb_info->board_num]).var, 1,
                                &l_fb_info->gen);

        fbgen_set_disp(-1, &l_fb_info->gen);

        do_install_cmap(0, &l_fb_info->gen.info);

        if (register_framebuffer(&l_fb_info->gen.info) < 0) {
                DPRINTK(1, "Couldn't register framebuffer\n");
                return;
        }

        PM3_WRITE_DAC_REG(PM3RD_CursorMode,
                          PM3RD_CursorMode_CURSOR_DISABLE);
        
        PM3_SHOW_CUR_MODE;
        
        pm3fb_write_mode(l_fb_info);
        
        printk("fb%d: %s, using %uK of video memory (%s)\n",
               l_fb_info->gen.info.node,
               permedia3_name, (u32) (l_fb_info->fb_size >> 10),
               cardbase[l_fb_info->board_type].cardname);
}

/* **************************************************** */
/* ***** accelerated permedia3-specific functions ***** */
/* **************************************************** */
#ifdef PM3FB_USE_ACCEL
static void pm3fb_wait_pm3(struct pm3fb_info *l_fb_info)
{
        DTRACE;

        PM3_SLOW_WRITE_REG(PM3FilterMode, PM3FilterModeSync);
        PM3_SLOW_WRITE_REG(PM3Sync, 0);
        mb();
        do {
                while ((PM3_READ_REG(PM3OutFIFOWords)) == 0);
                rmb();
        } while ((PM3_READ_REG(PM3OutputFifo)) != PM3Sync_Tag);
}

static void pm3fb_init_engine(struct pm3fb_info *l_fb_info)
{
        PM3_SLOW_WRITE_REG(PM3FilterMode, PM3FilterModeSync);
        PM3_SLOW_WRITE_REG(PM3StatisticMode, 0x0);
        PM3_SLOW_WRITE_REG(PM3DeltaMode, 0x0);
        PM3_SLOW_WRITE_REG(PM3RasterizerMode, 0x0);
        PM3_SLOW_WRITE_REG(PM3ScissorMode, 0x0);
        PM3_SLOW_WRITE_REG(PM3LineStippleMode, 0x0);
        PM3_SLOW_WRITE_REG(PM3AreaStippleMode, 0x0);
        PM3_SLOW_WRITE_REG(PM3GIDMode, 0x0);
        PM3_SLOW_WRITE_REG(PM3DepthMode, 0x0);
        PM3_SLOW_WRITE_REG(PM3StencilMode, 0x0);
        PM3_SLOW_WRITE_REG(PM3StencilData, 0x0);
        PM3_SLOW_WRITE_REG(PM3ColorDDAMode, 0x0);
        PM3_SLOW_WRITE_REG(PM3TextureCoordMode, 0x0);
        PM3_SLOW_WRITE_REG(PM3TextureIndexMode0, 0x0);
        PM3_SLOW_WRITE_REG(PM3TextureIndexMode1, 0x0);
        PM3_SLOW_WRITE_REG(PM3TextureReadMode, 0x0);
        PM3_SLOW_WRITE_REG(PM3LUTMode, 0x0);
        PM3_SLOW_WRITE_REG(PM3TextureFilterMode, 0x0);
        PM3_SLOW_WRITE_REG(PM3TextureCompositeMode, 0x0);
        PM3_SLOW_WRITE_REG(PM3TextureApplicationMode, 0x0);
        PM3_SLOW_WRITE_REG(PM3TextureCompositeColorMode1, 0x0);
        PM3_SLOW_WRITE_REG(PM3TextureCompositeAlphaMode1, 0x0);
        PM3_SLOW_WRITE_REG(PM3TextureCompositeColorMode0, 0x0);
        PM3_SLOW_WRITE_REG(PM3TextureCompositeAlphaMode0, 0x0);
        PM3_SLOW_WRITE_REG(PM3FogMode, 0x0);
        PM3_SLOW_WRITE_REG(PM3ChromaTestMode, 0x0);
        PM3_SLOW_WRITE_REG(PM3AlphaTestMode, 0x0);
        PM3_SLOW_WRITE_REG(PM3AntialiasMode, 0x0);
        PM3_SLOW_WRITE_REG(PM3YUVMode, 0x0);
        PM3_SLOW_WRITE_REG(PM3AlphaBlendColorMode, 0x0);
        PM3_SLOW_WRITE_REG(PM3AlphaBlendAlphaMode, 0x0);
        PM3_SLOW_WRITE_REG(PM3DitherMode, 0x0);
        PM3_SLOW_WRITE_REG(PM3LogicalOpMode, 0x0);
        PM3_SLOW_WRITE_REG(PM3RouterMode, 0x0);
        PM3_SLOW_WRITE_REG(PM3Window, 0x0);

        PM3_SLOW_WRITE_REG(PM3Config2D, 0x0);

        PM3_SLOW_WRITE_REG(PM3SpanColorMask, 0xffffffff);

        PM3_SLOW_WRITE_REG(PM3XBias, 0x0);
        PM3_SLOW_WRITE_REG(PM3YBias, 0x0);
        PM3_SLOW_WRITE_REG(PM3DeltaControl, 0x0);

        PM3_SLOW_WRITE_REG(PM3BitMaskPattern, 0xffffffff);

        PM3_SLOW_WRITE_REG(PM3FBDestReadEnables,
                           PM3FBDestReadEnables_E(0xff) |
                           PM3FBDestReadEnables_R(0xff) |
                           PM3FBDestReadEnables_ReferenceAlpha(0xff));
        PM3_SLOW_WRITE_REG(PM3FBDestReadBufferAddr0, 0x0);
        PM3_SLOW_WRITE_REG(PM3FBDestReadBufferOffset0, 0x0);
        PM3_SLOW_WRITE_REG(PM3FBDestReadBufferWidth0,
                           PM3FBDestReadBufferWidth_Width(l_fb_info->
                                                          current_par->
                                                          width));

        PM3_SLOW_WRITE_REG(PM3FBDestReadMode,
                           PM3FBDestReadMode_ReadEnable |
                           PM3FBDestReadMode_Enable0);
        PM3_SLOW_WRITE_REG(PM3FBSourceReadBufferAddr, 0x0);
        PM3_SLOW_WRITE_REG(PM3FBSourceReadBufferOffset, 0x0);
        PM3_SLOW_WRITE_REG(PM3FBSourceReadBufferWidth,
                           PM3FBSourceReadBufferWidth_Width(l_fb_info->
                                                            current_par->
                                                            width));
        PM3_SLOW_WRITE_REG(PM3FBSourceReadMode,
                           PM3FBSourceReadMode_Blocking |
                           PM3FBSourceReadMode_ReadEnable);

        {
                unsigned long rm = 1;
                switch (l_fb_info->current_par->depth) {
                case 8:
                        PM3_SLOW_WRITE_REG(PM3PixelSize,
                                           PM3PixelSize_GLOBAL_8BIT);
                        break;
                case 12:
                case 15:
                case 16:
                        PM3_SLOW_WRITE_REG(PM3PixelSize,
                                           PM3PixelSize_GLOBAL_16BIT);
                        break;
                case 32:
                        PM3_SLOW_WRITE_REG(PM3PixelSize,
                                           PM3PixelSize_GLOBAL_32BIT);
                        break;
                default:
                        DPRINTK(1, "Unsupported depth %d\n",
                                l_fb_info->current_par->depth);
                        break;
                }
                PM3_SLOW_WRITE_REG(PM3RasterizerMode, rm);
        }

        PM3_SLOW_WRITE_REG(PM3FBSoftwareWriteMask, 0xffffffff);
        PM3_SLOW_WRITE_REG(PM3FBHardwareWriteMask, 0xffffffff);
        PM3_SLOW_WRITE_REG(PM3FBWriteMode,
                           PM3FBWriteMode_WriteEnable |
                           PM3FBWriteMode_OpaqueSpan |
                           PM3FBWriteMode_Enable0);
        PM3_SLOW_WRITE_REG(PM3FBWriteBufferAddr0, 0x0);
        PM3_SLOW_WRITE_REG(PM3FBWriteBufferOffset0, 0x0);
        PM3_SLOW_WRITE_REG(PM3FBWriteBufferWidth0,
                           PM3FBWriteBufferWidth_Width(l_fb_info->
                                                       current_par->
                                                       width));

        PM3_SLOW_WRITE_REG(PM3SizeOfFramebuffer, 0x0);
        {
                unsigned long sofb = (8UL * l_fb_info->fb_size) /
                        ((depth2bpp(l_fb_info->current_par->depth))
                         * l_fb_info->current_par->width);      /* size in lines of FB */
                if (sofb > 4095)
                        PM3_SLOW_WRITE_REG(PM3SizeOfFramebuffer, 4095);
                else
                        PM3_SLOW_WRITE_REG(PM3SizeOfFramebuffer, sofb);
                
                switch (l_fb_info->current_par->depth) {
                case 8:
                        PM3_SLOW_WRITE_REG(PM3DitherMode,
                                           (1 << 10) | (2 << 3));
                        break;
                case 12:
                case 15:
                case 16:
                        PM3_SLOW_WRITE_REG(PM3DitherMode,
                                           (1 << 10) | (1 << 3));
                        break;
                case 32:
                        PM3_SLOW_WRITE_REG(PM3DitherMode,
                                           (1 << 10) | (0 << 3));
                        break;
                default:
                        DPRINTK(1, "Unsupported depth %d\n",
                                l_fb_info->current_par->depth);
                        break;
                }
        }

        PM3_SLOW_WRITE_REG(PM3dXDom, 0x0);
        PM3_SLOW_WRITE_REG(PM3dXSub, 0x0);
        PM3_SLOW_WRITE_REG(PM3dY, (1 << 16));
        PM3_SLOW_WRITE_REG(PM3StartXDom, 0x0);
        PM3_SLOW_WRITE_REG(PM3StartXSub, 0x0);
        PM3_SLOW_WRITE_REG(PM3StartY, 0x0);
        PM3_SLOW_WRITE_REG(PM3Count, 0x0);
        
/* Disable LocalBuffer. better safe than sorry */
        PM3_SLOW_WRITE_REG(PM3LBDestReadMode, 0x0);
        PM3_SLOW_WRITE_REG(PM3LBDestReadEnables, 0x0);
        PM3_SLOW_WRITE_REG(PM3LBSourceReadMode, 0x0);
        PM3_SLOW_WRITE_REG(PM3LBWriteMode, 0x0);
        
        pm3fb_wait_pm3(l_fb_info);
}

#ifdef FBCON_HAS_CFB32
static void pm3fb_cfb32_clear(struct vc_data *conp,
                              struct display *p,
                              int sy, int sx, int height, int width)
{
        struct pm3fb_info *l_fb_info = (struct pm3fb_info *) p->fb_info;
        u32 c;

        DTRACE;

        sx = sx * fontwidth(p);
        width = width * fontwidth(p);
        sy = sy * fontheight(p);
        height = height * fontheight(p);
        c = ((u32 *) p->dispsw_data)[attr_bgcol_ec(p, conp)];

        /* block fills in 32bpp are hard, but in low res (width <= 1600 :-)
           we can use 16bpp operations, but not if NoWriteMask is on (SDRAM)  */
        if ((l_fb_info->current_par->width > 1600) ||
            (l_fb_info->memt.caps & PM3LocalMemCaps_NoWriteMask)) {
                PM3_WAIT(4);

                PM3_WRITE_REG(PM3Config2D,
                                          PM3Config2D_UseConstantSource |
                                          PM3Config2D_ForegroundROPEnable |
                                          (PM3Config2D_ForegroundROP(0x3)) |    /* Ox3 is GXcopy */
                                          PM3Config2D_FBWriteEnable);

                PM3_WRITE_REG(PM3ForegroundColor, c);

                PM3_WRITE_REG(PM3RectanglePosition,
                              (PM3RectanglePosition_XOffset(sx)) |
                              (PM3RectanglePosition_YOffset(sy)));

                PM3_WRITE_REG(PM3Render2D,
                              PM3Render2D_XPositive |
                              PM3Render2D_YPositive |
                              PM3Render2D_Operation_Normal |
                              PM3Render2D_SpanOperation |
                              (PM3Render2D_Width(width)) |
                              (PM3Render2D_Height(height)));
        } else {
                PM3_WAIT(8);

                PM3_WRITE_REG(PM3FBBlockColor, c);

                PM3_WRITE_REG(PM3PixelSize, PM3PixelSize_GLOBAL_16BIT);

                PM3_WRITE_REG(PM3FBWriteBufferWidth0,
                              PM3FBWriteBufferWidth_Width(l_fb_info->
                                                          current_par->
                                                          width << 1));

                PM3_WRITE_REG(PM3Config2D,
                                          PM3Config2D_UseConstantSource |
                                          PM3Config2D_ForegroundROPEnable |
                                          (PM3Config2D_ForegroundROP(0x3)) |    /* Ox3 is GXcopy */
                                          PM3Config2D_FBWriteEnable);

                PM3_WRITE_REG(PM3RectanglePosition,
                              (PM3RectanglePosition_XOffset(sx << 1)) |
                              (PM3RectanglePosition_YOffset(sy)));

                PM3_WRITE_REG(PM3Render2D,
                              PM3Render2D_XPositive |
                              PM3Render2D_YPositive |
                              PM3Render2D_Operation_Normal |
                              (PM3Render2D_Width(width << 1)) |
                              (PM3Render2D_Height(height)));

                PM3_WRITE_REG(PM3FBWriteBufferWidth0,
                              PM3FBWriteBufferWidth_Width(l_fb_info->
                                                          current_par->
                                                          width));

                PM3_WRITE_REG(PM3PixelSize, PM3PixelSize_GLOBAL_32BIT);
        }

        pm3fb_wait_pm3(l_fb_info);
}

static void pm3fb_cfb32_clear_margins(struct vc_data *conp,
                                      struct display *p, int bottom_only)
{
        struct pm3fb_info *l_fb_info = (struct pm3fb_info *) p->fb_info;
        int sx, sy;
        u32 c;

        DTRACE;

        sx = conp->vc_cols * fontwidth(p);      /* right margin */
        sy = conp->vc_rows * fontheight(p);     /* bottom margin */
        c = ((u32 *) p->dispsw_data)[attr_bgcol_ec(p, conp)];

        if (!bottom_only) {     /* right margin top->bottom */
                PM3_WAIT(4);

                PM3_WRITE_REG(PM3Config2D,
                                          PM3Config2D_UseConstantSource |
                                          PM3Config2D_ForegroundROPEnable |
                                          (PM3Config2D_ForegroundROP(0x3)) |    /* Ox3 is GXcopy */
                                          PM3Config2D_FBWriteEnable);

                PM3_WRITE_REG(PM3ForegroundColor, c);

                PM3_WRITE_REG(PM3RectanglePosition,
                              (PM3RectanglePosition_XOffset
                               (p->var.xoffset +
                                sx)) | (PM3RectanglePosition_YOffset(p->
                                                                     var.
                                                                     yoffset)));

                PM3_WRITE_REG(PM3Render2D,
                              PM3Render2D_XPositive |
                              PM3Render2D_YPositive |
                              PM3Render2D_Operation_Normal |
                              PM3Render2D_SpanOperation |
                              (PM3Render2D_Width(p->var.xres - sx)) |
                              (PM3Render2D_Height(p->var.yres)));
        }

        /* bottom margin left -> right */
        PM3_WAIT(4);

        PM3_WRITE_REG(PM3Config2D,
                                  PM3Config2D_UseConstantSource |
                                  PM3Config2D_ForegroundROPEnable |
                                  (PM3Config2D_ForegroundROP(0x3)) |    /* Ox3 is GXcopy */
                                  PM3Config2D_FBWriteEnable);

        PM3_WRITE_REG(PM3ForegroundColor, c);

        PM3_WRITE_REG(PM3RectanglePosition,
                      (PM3RectanglePosition_XOffset(p->var.xoffset)) |
                      (PM3RectanglePosition_YOffset(p->var.yoffset + sy)));

        PM3_WRITE_REG(PM3Render2D,
                      PM3Render2D_XPositive |
                      PM3Render2D_YPositive |
                      PM3Render2D_Operation_Normal |
                      PM3Render2D_SpanOperation |
                      (PM3Render2D_Width(p->var.xres)) |
                      (PM3Render2D_Height(p->var.yres - sy)));

        pm3fb_wait_pm3(l_fb_info);
}
#endif /* FBCON_HAS_CFB32 */
#ifdef FBCON_HAS_CFB16
static void pm3fb_cfb16_clear(struct vc_data *conp,
                              struct display *p,
                              int sy, int sx, int height, int width)
{
        struct pm3fb_info *l_fb_info = (struct pm3fb_info *) p->fb_info;
        u32 c;

        DTRACE;

        sx = sx * fontwidth(p);
        width = width * fontwidth(p);
        sy = sy * fontheight(p);
        height = height * fontheight(p);
        c = ((u16 *) p->dispsw_data)[attr_bgcol_ec(p, conp)];
        c = c | (c << 16);

        PM3_WAIT(4);

        if (l_fb_info->memt.caps & PM3LocalMemCaps_NoWriteMask)
                PM3_WRITE_REG(PM3ForegroundColor, c);
        else
                PM3_WRITE_REG(PM3FBBlockColor, c);

        PM3_WRITE_REG(PM3Config2D,
                                  PM3Config2D_UseConstantSource |

                                  PM3Config2D_ForegroundROPEnable |
                                  (PM3Config2D_ForegroundROP(0x3)) |    /* Ox3 is GXcopy */
                                  PM3Config2D_FBWriteEnable);

        PM3_WRITE_REG(PM3RectanglePosition,
                      (PM3RectanglePosition_XOffset(sx)) |
                      (PM3RectanglePosition_YOffset(sy)));
        
        if (l_fb_info->memt.caps & PM3LocalMemCaps_NoWriteMask)
                PM3_WRITE_REG(PM3Render2D,
                              PM3Render2D_XPositive |
                              PM3Render2D_YPositive |
                              PM3Render2D_Operation_Normal |
                              PM3Render2D_SpanOperation |
                              (PM3Render2D_Width(width)) |
                              (PM3Render2D_Height(height)));
        else
                PM3_WRITE_REG(PM3Render2D,
                              PM3Render2D_XPositive |
                              PM3Render2D_YPositive |
                              PM3Render2D_Operation_Normal |
                              (PM3Render2D_Width(width)) |
                              (PM3Render2D_Height(height)));
        
        pm3fb_wait_pm3(l_fb_info);
}

static void pm3fb_cfb16_clear_margins(struct vc_data *conp,
                                      struct display *p, int bottom_only)
{
        struct pm3fb_info *l_fb_info = (struct pm3fb_info *) p->fb_info;
        int sx, sy;
        u32 c;

        DTRACE;

        sx = conp->vc_cols * fontwidth(p);      /* right margin */
        sy = conp->vc_rows * fontheight(p);     /* bottom margin */
        c = ((u16 *) p->dispsw_data)[attr_bgcol_ec(p, conp)];
        c = c | (c << 16);

        if (!bottom_only) {     /* right margin top->bottom */
                PM3_WAIT(4);

                PM3_WRITE_REG(PM3Config2D,
                                          PM3Config2D_UseConstantSource |
                                          PM3Config2D_ForegroundROPEnable |
                                          (PM3Config2D_ForegroundROP(0x3)) |    /* Ox3 is GXcopy */
                                          PM3Config2D_FBWriteEnable);
                
                if (l_fb_info->memt.caps & PM3LocalMemCaps_NoWriteMask)
                        PM3_WRITE_REG(PM3ForegroundColor, c);
                else
                        PM3_WRITE_REG(PM3FBBlockColor, c);
                
                PM3_WRITE_REG(PM3RectanglePosition,
                              (PM3RectanglePosition_XOffset
                               (p->var.xoffset +
                                sx)) | (PM3RectanglePosition_YOffset(p->
                                                                     var.
                                                                     yoffset)));
                if (l_fb_info->memt.caps & PM3LocalMemCaps_NoWriteMask)
                        PM3_WRITE_REG(PM3Render2D,
                                      PM3Render2D_XPositive |
                                      PM3Render2D_YPositive |
                                      PM3Render2D_Operation_Normal |
                                      PM3Render2D_SpanOperation |
                                      (PM3Render2D_Width(p->var.xres - sx)) |
                                      (PM3Render2D_Height(p->var.yres)));
                else
                        PM3_WRITE_REG(PM3Render2D,
                                      PM3Render2D_XPositive |
                                      PM3Render2D_YPositive |
                                      PM3Render2D_Operation_Normal |
                                      (PM3Render2D_Width(p->var.xres - sx)) |
                                      (PM3Render2D_Height(p->var.yres)));
        }
        
        /* bottom margin left -> right */
        PM3_WAIT(4);
        
        PM3_WRITE_REG(PM3Config2D,
                      PM3Config2D_UseConstantSource |
                      PM3Config2D_ForegroundROPEnable |
                      (PM3Config2D_ForegroundROP(0x3)) |        /* Ox3 is GXcopy */
                      PM3Config2D_FBWriteEnable);
        
        if (l_fb_info->memt.caps & PM3LocalMemCaps_NoWriteMask)
                PM3_WRITE_REG(PM3ForegroundColor, c);
        else
                PM3_WRITE_REG(PM3FBBlockColor, c);
        
        
        PM3_WRITE_REG(PM3RectanglePosition,
                      (PM3RectanglePosition_XOffset(p->var.xoffset)) |
                      (PM3RectanglePosition_YOffset(p->var.yoffset + sy)));
        
        if (l_fb_info->memt.caps & PM3LocalMemCaps_NoWriteMask)
                PM3_WRITE_REG(PM3Render2D,
                              PM3Render2D_XPositive |
                              PM3Render2D_YPositive |
                              PM3Render2D_Operation_Normal |
                              PM3Render2D_SpanOperation |
                              (PM3Render2D_Width(p->var.xres)) |
                              (PM3Render2D_Height(p->var.yres - sy)));
        else
                PM3_WRITE_REG(PM3Render2D,
                              PM3Render2D_XPositive |
                              PM3Render2D_YPositive |
                              PM3Render2D_Operation_Normal |
                              (PM3Render2D_Width(p->var.xres)) |
                              (PM3Render2D_Height(p->var.yres - sy)));

        pm3fb_wait_pm3(l_fb_info);
}
#endif /* FBCON_HAS_CFB16 */
#ifdef FBCON_HAS_CFB8
static void pm3fb_cfb8_clear(struct vc_data *conp,
                             struct display *p,
                             int sy, int sx, int height, int width)
{
        struct pm3fb_info *l_fb_info = (struct pm3fb_info *) p->fb_info;
        u32 c;

        DTRACE;

        sx = sx * fontwidth(p);
        width = width * fontwidth(p);
        sy = sy * fontheight(p);
        height = height * fontheight(p);

        c = attr_bgcol_ec(p, conp);
        c |= c << 8;
        c |= c << 16;

        PM3_WAIT(4);

        PM3_WRITE_REG(PM3Config2D,
                                  PM3Config2D_UseConstantSource |
                                  PM3Config2D_ForegroundROPEnable |
                                  (PM3Config2D_ForegroundROP(0x3)) |    /* Ox3 is GXcopy */
                                  PM3Config2D_FBWriteEnable);

        PM3_WRITE_REG(PM3ForegroundColor, c);

        PM3_WRITE_REG(PM3RectanglePosition,
                      (PM3RectanglePosition_XOffset(sx)) |
                      (PM3RectanglePosition_YOffset(sy)));

        PM3_WRITE_REG(PM3Render2D,
                      PM3Render2D_XPositive |
                      PM3Render2D_YPositive |
                      PM3Render2D_Operation_Normal |
                      PM3Render2D_SpanOperation |
                      (PM3Render2D_Width(width)) |
                      (PM3Render2D_Height(height)));

        pm3fb_wait_pm3(l_fb_info);
}

static void pm3fb_cfb8_clear_margins(struct vc_data *conp,
                                     struct display *p, int bottom_only)
{
        struct pm3fb_info *l_fb_info = (struct pm3fb_info *) p->fb_info;
        int sx, sy;
        u32 c;

        DTRACE;

        sx = conp->vc_cols * fontwidth(p);      /* right margin */
        sy = conp->vc_rows * fontheight(p);     /* bottom margin */
        c = attr_bgcol_ec(p, conp);
        c |= c << 8;
        c |= c << 16;

        if (!bottom_only) {     /* right margin top->bottom */
                PM3_WAIT(4);

                PM3_WRITE_REG(PM3Config2D,
                                          PM3Config2D_UseConstantSource |
                                          PM3Config2D_ForegroundROPEnable |
                                          (PM3Config2D_ForegroundROP(0x3)) |    /* Ox3 is GXcopy */
                                          PM3Config2D_FBWriteEnable);

                PM3_WRITE_REG(PM3ForegroundColor, c);

                PM3_WRITE_REG(PM3RectanglePosition,
                              (PM3RectanglePosition_XOffset
                               (p->var.xoffset +
                                sx)) | (PM3RectanglePosition_YOffset(p->
                                                                     var.
                                                                     yoffset)));

                PM3_WRITE_REG(PM3Render2D,
                              PM3Render2D_XPositive |
                              PM3Render2D_YPositive |
                              PM3Render2D_Operation_Normal |
                              PM3Render2D_SpanOperation |
                              (PM3Render2D_Width(p->var.xres - sx)) |
                              (PM3Render2D_Height(p->var.yres)));
        }

        /* bottom margin left -> right */
        PM3_WAIT(4);

        PM3_WRITE_REG(PM3Config2D,
                                  PM3Config2D_UseConstantSource |
                                  PM3Config2D_ForegroundROPEnable |
                                  (PM3Config2D_ForegroundROP(0x3)) |    /* Ox3 is GXcopy */
                                  PM3Config2D_FBWriteEnable);

        PM3_WRITE_REG(PM3ForegroundColor, c);

        PM3_WRITE_REG(PM3RectanglePosition,
                      (PM3RectanglePosition_XOffset(p->var.xoffset)) |
                      (PM3RectanglePosition_YOffset(p->var.yoffset + sy)));

        PM3_WRITE_REG(PM3Render2D,
                      PM3Render2D_XPositive |
                      PM3Render2D_YPositive |
                      PM3Render2D_Operation_Normal |
                      PM3Render2D_SpanOperation |
                      (PM3Render2D_Width(p->var.xres)) |
                      (PM3Render2D_Height(p->var.yres - sy)));

        pm3fb_wait_pm3(l_fb_info);
}
#endif /* FBCON_HAS_CFB8 */
#if defined(FBCON_HAS_CFB8) || defined(FBCON_HAS_CFB16) || defined(FBCON_HAS_CFB32)
static void pm3fb_cfbX_bmove(struct display *p,
                             int sy, int sx,
                             int dy, int dx, int height, int width)
{
        struct pm3fb_info *l_fb_info = (struct pm3fb_info *) p->fb_info;
        int x_align, o_x, o_y;

        DTRACE;

        sx = sx * fontwidth(p);
        dx = dx * fontwidth(p);
        width = width * fontwidth(p);
        sy = sy * fontheight(p);
        dy = dy * fontheight(p);
        height = height * fontheight(p);

        o_x = sx - dx;          /*(sx > dx ) ? (sx - dx) : (dx - sx); */
        o_y = sy - dy;          /*(sy > dy ) ? (sy - dy) : (dy - sy); */

        x_align = (sx & 0x1f);

        PM3_WAIT(6);

        PM3_WRITE_REG(PM3Config2D,
                                  PM3Config2D_UserScissorEnable |
                                  PM3Config2D_ForegroundROPEnable |
                                  PM3Config2D_Blocking |
                                  (PM3Config2D_ForegroundROP(0x3)) |    /* Ox3 is GXcopy */
                                  PM3Config2D_FBWriteEnable);

        PM3_WRITE_REG(PM3ScissorMinXY,
                      ((dy & 0x0fff) << 16) | (dx & 0x0fff));
        PM3_WRITE_REG(PM3ScissorMaxXY,
                                  (((dy + height) & 0x0fff) << 16) |
                                  ((dx + width) & 0x0fff));

        PM3_WRITE_REG(PM3FBSourceReadBufferOffset,
                      PM3FBSourceReadBufferOffset_XOffset(o_x) |
                      PM3FBSourceReadBufferOffset_YOffset(o_y));

        PM3_WRITE_REG(PM3RectanglePosition,
                      (PM3RectanglePosition_XOffset(dx - x_align)) |
                      (PM3RectanglePosition_YOffset(dy)));

        PM3_WRITE_REG(PM3Render2D,
                      ((sx > dx) ? PM3Render2D_XPositive : 0) |
                      ((sy > dy) ? PM3Render2D_YPositive : 0) |
                      PM3Render2D_Operation_Normal |
                      PM3Render2D_SpanOperation |
                      PM3Render2D_FBSourceReadEnable |
                      (PM3Render2D_Width(width + x_align)) |
                      (PM3Render2D_Height(height)));

        pm3fb_wait_pm3(l_fb_info);
}

static void pm3fb_cfbX_putc(struct vc_data *conp, struct display *p,
                            int c, int yy, int xx)
{
        struct pm3fb_info *l_fb_info = (struct pm3fb_info *) p->fb_info;
        u8 *cdat, asx = 0, asy = 0, o_x = 0, o_y = 0;
        u32 fgx, bgx, ldat;
        int sx, sy, i;

        DTRACE;

        if (l_fb_info->current_par->depth == 8)
                fgx = attr_fgcol(p, c);
        else if (depth2bpp(l_fb_info->current_par->depth) == 16)
                fgx = ((u16 *) p->dispsw_data)[attr_fgcol(p, c)];
        else
                fgx = ((u32 *) p->dispsw_data)[attr_fgcol(p, c)];

        PM3_COLOR(fgx);

        if (l_fb_info->current_par->depth == 8)
                bgx = attr_bgcol(p, c);
        else if (depth2bpp(l_fb_info->current_par->depth) == 16)
                bgx = ((u16 *) p->dispsw_data)[attr_bgcol(p, c)];
        else
                bgx = ((u32 *) p->dispsw_data)[attr_bgcol(p, c)];

        PM3_COLOR(bgx);

        PM3_WAIT(4);

        PM3_WRITE_REG(PM3Config2D,
                                  PM3Config2D_UseConstantSource |
                                  PM3Config2D_ForegroundROPEnable |
                                  (PM3Config2D_ForegroundROP(0x3)) |    /* Ox3 is GXcopy */
                                  PM3Config2D_FBWriteEnable | PM3Config2D_OpaqueSpan);

        PM3_WRITE_REG(PM3ForegroundColor, fgx);
        PM3_WRITE_REG(PM3FillBackgroundColor, bgx);

        /* WARNING : address select X need to specify 8 bits for fontwidth <= 8 */
        /* and 16 bits for fontwidth <= 16 */
        /* same in _putcs, same for Y and fontheight */
        if (fontwidth(p) <= 8)
                asx = 2;
        else if (fontwidth(p) <= 16)
                asx = 3;        /* look OK */
        if (fontheight(p) <= 8)
                asy = 2;
        else if (fontheight(p) <= 16)
                asy = 3;        /* look OK */
        else if (fontheight(p) <= 32)
                asy = 4;        /* look OK */

        sx = xx * fontwidth(p);
        sy = yy * fontheight(p);

        if (fontwidth(p) <= 8)
                o_x = (8 - (sx & 0x7)) & 0x7;
        else if (fontwidth(p) <= 16)
                o_x = (16 - (sx & 0xF)) & 0xF;
        if (fontheight(p) <= 8)
                o_y = (8 - (sy & 0x7)) & 0x7;
        else if (fontheight(p) <= 16)
                o_y = (16 - (sy & 0xF)) & 0xF;
        else if (fontheight(p) <= 32)
                o_y = (32 - (sy & 0x1F)) & 0x1F;

        PM3_WRITE_REG(PM3AreaStippleMode, (o_x << 7) | (o_y << 12) |    /* x_offset, y_offset in pattern */
                      (1 << 18) |       /* BE */
                      1 | (asx << 1) | (asy << 4) |     /* address select x/y */
                      (1 << 20));       /* OpaqueSpan */

        if (fontwidth(p) <= 8) {
                cdat = p->fontdata + (c & p->charmask) * fontheight(p);
        } else {
                cdat =
                    p->fontdata +
                    ((c & p->charmask) * (fontheight(p) << 1));
        }

        PM3_WAIT(2 + fontheight(p));

        for (i = 0; i < fontheight(p); i++) {   /* assume fontheight <= 32 */
                if (fontwidth(p) <= 8) {
                        ldat = *cdat++;
                } else {        /* assume fontwidth <= 16 ATM */

                        ldat = ((*cdat++) << 8);
                        ldat |= *cdat++;
                }
                PM3_WRITE_REG(AreaStipplePattern_indexed(i), ldat);
        }

        PM3_WRITE_REG(PM3RectanglePosition,
                      (PM3RectanglePosition_XOffset(sx)) |
                      (PM3RectanglePosition_YOffset(sy)));

        PM3_WRITE_REG(PM3Render2D,
                      PM3Render2D_AreaStippleEnable |
                      PM3Render2D_XPositive |
                      PM3Render2D_YPositive |
                      PM3Render2D_Operation_Normal |
                      PM3Render2D_SpanOperation |
                      (PM3Render2D_Width(fontwidth(p))) |
                      (PM3Render2D_Height(fontheight(p))));

        pm3fb_wait_pm3(l_fb_info);
}

static void pm3fb_cfbX_putcs(struct vc_data *conp, struct display *p,
                             const unsigned short *s, int count, int yy,
                             int xx)
{
        struct pm3fb_info *l_fb_info = (struct pm3fb_info *) p->fb_info;
        u8 *cdat, asx = 0, asy = 0, o_x = 0, o_y = 0;
        u32 fgx, bgx, ldat;
        int sx, sy, i, j;
        u16 sc;

        DTRACE;

        sc = scr_readw(s);
        if (l_fb_info->current_par->depth == 8)
                fgx = attr_fgcol(p, sc);
        else if (depth2bpp(l_fb_info->current_par->depth) == 16)
                fgx = ((u16 *) p->dispsw_data)[attr_fgcol(p, sc)];
        else
                fgx = ((u32 *) p->dispsw_data)[attr_fgcol(p, sc)];
        
        PM3_COLOR(fgx);
        
        if (l_fb_info->current_par->depth == 8)
                bgx = attr_bgcol(p, sc);
        else if (depth2bpp(l_fb_info->current_par->depth) == 16)
                bgx = ((u16 *) p->dispsw_data)[attr_bgcol(p, sc)];
        else
                bgx = ((u32 *) p->dispsw_data)[attr_bgcol(p, sc)];
        
        PM3_COLOR(bgx);

        PM3_WAIT(4);

        PM3_WRITE_REG(PM3Config2D,
                                  PM3Config2D_UseConstantSource |
                                  PM3Config2D_ForegroundROPEnable |
                                  (PM3Config2D_ForegroundROP(0x3)) |    /* Ox3 is GXcopy */
                                  PM3Config2D_FBWriteEnable |
                                  PM3Config2D_OpaqueSpan);

        PM3_WRITE_REG(PM3ForegroundColor, fgx);
        PM3_WRITE_REG(PM3FillBackgroundColor, bgx);

        /* WARNING : address select X need to specify 8 bits for fontwidth <= 8 */
        /* and 16 bits for fontwidth <= 16 */
        /* same in _putc, same for Y and fontheight */
        if (fontwidth(p) <= 8)
                asx = 2;
        else if (fontwidth(p) <= 16)
                asx = 3;        /* look OK */
        if (fontheight(p) <= 8)
                asy = 2;
        else if (fontheight(p) <= 16)
                asy = 3;        /* look OK */
        else if (fontheight(p) <= 32)
                asy = 4;        /* look OK */

        sy = yy * fontheight(p);

        if (fontheight(p) <= 8)
                o_y = (8 - (sy & 0x7)) & 0x7;
        else if (fontheight(p) <= 16)
                o_y = (16 - (sy & 0xF)) & 0xF;
        else if (fontheight(p) <= 32)
                o_y = (32 - (sy & 0x1F)) & 0x1F;

        for (j = 0; j < count; j++) {
                sc = scr_readw(s + j);
                if (fontwidth(p) <= 8)
                        cdat = p->fontdata +
                                (sc & p->charmask) * fontheight(p);
                else
                        cdat = p->fontdata +
                                ((sc & p->charmask) * fontheight(p) << 1);
                
                sx = (xx + j) * fontwidth(p);

                if (fontwidth(p) <= 8)
                        o_x = (8 - (sx & 0x7)) & 0x7;
                else if (fontwidth(p) <= 16)
                        o_x = (16 - (sx & 0xF)) & 0xF;

                PM3_WAIT(3 + fontheight(p));

                PM3_WRITE_REG(PM3AreaStippleMode, (o_x << 7) | (o_y << 12) | /* x_offset, y_offset in pattern */
                              (1 << 18) | /* BE */
                              1 | (asx << 1) | (asy << 4) | /* address select x/y */
                              (1 << 20)); /* OpaqueSpan */

                for (i = 0; i < fontheight(p); i++) { /* assume fontheight <= 32 */
                        if (fontwidth(p) <= 8) {
                                ldat = *cdat++;
                        } else { /* assume fontwidth <= 16 ATM */
                                ldat = ((*cdat++) << 8);
                                ldat |= *cdat++;
                        }
                        PM3_WRITE_REG(AreaStipplePattern_indexed(i), ldat);
                }

                PM3_WRITE_REG(PM3RectanglePosition,
                              (PM3RectanglePosition_XOffset(sx)) |
                              (PM3RectanglePosition_YOffset(sy)));

                PM3_WRITE_REG(PM3Render2D,
                              PM3Render2D_AreaStippleEnable |
                              PM3Render2D_XPositive |
                              PM3Render2D_YPositive |
                              PM3Render2D_Operation_Normal |
                              PM3Render2D_SpanOperation |
                              (PM3Render2D_Width(fontwidth(p))) |
                              (PM3Render2D_Height(fontheight(p))));
        }
        pm3fb_wait_pm3(l_fb_info);
}

static void pm3fb_cfbX_revc(struct display *p, int xx, int yy)
{
        struct pm3fb_info *l_fb_info = (struct pm3fb_info *) p->fb_info;

        xx = xx * fontwidth(p);
        yy = yy * fontheight(p);

        if (l_fb_info->current_par->depth == 8)
        {
                if (l_fb_info->memt.caps & PM3LocalMemCaps_NoWriteMask)
                        PM3_SLOW_WRITE_REG(PM3FBSoftwareWriteMask, 0x0F0F0F0F);
                else
                        PM3_SLOW_WRITE_REG(PM3FBHardwareWriteMask, 0x0F0F0F0F);
        }

        PM3_WAIT(3);

        PM3_WRITE_REG(PM3Config2D,
                                  PM3Config2D_UseConstantSource |
                                  PM3Config2D_ForegroundROPEnable |
                                  (PM3Config2D_ForegroundROP(0xa)) |    /* Oxa is GXinvert */
                                  PM3Config2D_FBDestReadEnable |
                                  PM3Config2D_FBWriteEnable);

        PM3_WRITE_REG(PM3RectanglePosition,
                      (PM3RectanglePosition_XOffset(xx)) |
                      (PM3RectanglePosition_YOffset(yy)));

        PM3_WRITE_REG(PM3Render2D,
                      PM3Render2D_XPositive |
                      PM3Render2D_YPositive |
                      PM3Render2D_Operation_Normal |
                      PM3Render2D_SpanOperation |
                      (PM3Render2D_Width(fontwidth(p))) |
                      (PM3Render2D_Height(fontheight(p))));

        pm3fb_wait_pm3(l_fb_info);

        if (l_fb_info->current_par->depth == 8)
        {
                if (l_fb_info->memt.caps & PM3LocalMemCaps_NoWriteMask)
                        PM3_SLOW_WRITE_REG(PM3FBSoftwareWriteMask, 0xFFFFFFFF);
                else
                        PM3_SLOW_WRITE_REG(PM3FBHardwareWriteMask, 0xFFFFFFFF);
        }
}

#endif /* FBCON_HAS_CFB8 || FBCON_HAS_CFB16 || FBCON_HAS_CFB32 */
#endif /* PM3FB_USE_ACCEL */
/* *********************************** */
/* ***** pre-init board(s) setup ***** */
/* *********************************** */

static void pm3fb_mode_setup(char *mode, unsigned long board_num)
{
        struct pm3fb_info *l_fb_info = &(fb_info[board_num]);
        struct pm3fb_par *l_fb_par = &(current_par[board_num]);
        unsigned long i = 0;

        current_par_valid[board_num] = 0;

        if (!strncmp(mode, "current", 7)) {
                l_fb_info->use_current = 1;     /* default w/ OpenFirmware */
        } else {
                while ((mode_base[i].name[0])
                       && (!current_par_valid[board_num])) {
                        if (!
                            (strncmp
                             (mode, mode_base[i].name,
                              strlen(mode_base[i].name)))) {
                                memcpy(l_fb_par, &(mode_base[i].user_mode),
                                       sizeof(struct pm3fb_par));
                                current_par_valid[board_num] = 1;
                                DPRINTK(2, "Mode set to %s\n",
                                        mode_base[i].name);
                        }
                        i++;
                }
                DASSERT(current_par_valid[board_num],
                        "Valid mode on command line\n");
        }
}

static void pm3fb_pciid_setup(char *pciid, unsigned long board_num)
{
        short l_bus = -1, l_slot = -1, l_func = -1;
        char *next;

        if (pciid) {
                l_bus = simple_strtoul(pciid, &next, 10);
                if (next && (next[0] == ':')) {
                        pciid = next + 1;
                        l_slot = simple_strtoul(pciid, &next, 10);
                        if (next && (next[0] == ':')) {
                                pciid = next + 1;
                                l_func =
                                    simple_strtoul(pciid, (char **) NULL,
                                                   10);
                        }
                }
        } else
                return;

        if ((l_bus >= 0) && (l_slot >= 0) && (l_func >= 0)) {
                bus[board_num] = l_bus;
                slot[board_num] = l_slot;
                func[board_num] = l_func;
                DPRINTK(2, "Board #%ld will be PciId: %hd:%hd:%hd\n",
                        board_num, l_bus, l_slot, l_func);
        } else {
                DPRINTK(1, "Invalid PciId: %hd:%hd:%hd for board #%ld\n",
                        l_bus, l_slot, l_func, board_num);
        }
}

static void pm3fb_font_setup(char *lf, unsigned long board_num)
{
        unsigned long lfs = strlen(lf);

        if (lfs > (PM3_FONTNAME_SIZE - 1)) {
                DPRINTK(1, "Fontname %s too long\n", lf);
                return;
        }
        strlcpy(fontn[board_num], lf, lfs + 1);
}

static void pm3fb_bootdepth_setup(char *bds, unsigned long board_num)
{
        unsigned long bd = simple_strtoul(bds, (char **) NULL, 10);

        if (!(depth_supported(bd))) {
                printk(KERN_WARNING "pm3fb: ignoring invalid depth %s for board #%ld\n",
                       bds, board_num);
                return;
        }
        depth[board_num] = bd;
}

static void pm3fb_forcesize_setup(char *bds, unsigned long board_num)
{
        unsigned long bd = simple_strtoul(bds, (char **) NULL, 10);

        if (bd > 64) {
                printk(KERN_WARNING "pm3fb: ignoring invalid memory size %s for board #%ld\n",
                       bds, board_num);
                return;
        }
        forcesize[board_num] = bd;
}

static char *pm3fb_boardnum_setup(char *options, unsigned long *bn)
{
        char *next;

        if (!(CHAR_IS_NUM(options[0]))) {
                (*bn) = 0;
                return (options);
        }

        (*bn) = simple_strtoul(options, &next, 10);

        if (next && (next[0] == ':') && ((*bn) >= 0)
            && ((*bn) <= PM3_MAX_BOARD)) {
                DPRINTK(2, "Board_num seen as %ld\n", (*bn));
                return (next + 1);
        } else {
                (*bn) = 0;
                DPRINTK(2, "Board_num default to %ld\n", (*bn));
                return (options);
        }
}

static void pm3fb_real_setup(char *options)
{
        char *next;
        unsigned long i, bn;
        struct pm3fb_info *l_fb_info;

        DTRACE;

        DPRINTK(2, "Options : %s\n", options);

        for (i = 0; i < PM3_MAX_BOARD; i++) {
                l_fb_info = &(fb_info[i]);
                memset(l_fb_info, 0, sizeof(struct pm3fb_info));
                l_fb_info->gen.fbhw = &pm3fb_switch;
                l_fb_info->board_num = i;
                current_par_valid[i] = 0;
                slot[i] = -1;
                func[i] = -1;
                bus[i] = -1;
                disable[i] = 0;
                noaccel[i] = 0;
                fontn[i][0] = '\0';
                depth[i] = 0;
                l_fb_info->current_par = &(current_par[i]);
        }

        /* eat up prefix pm3fb and whatever is used as separator i.e. :,= */
        if (!strncmp(options, "pm3fb", 5)) {
                options += 5;
                while (((*options) == ',') || ((*options) == ':')
                       || ((*options) == '='))
                        options++;
        }

        while (options) {
                bn = 0;
                if ((next = strchr(options, ','))) {
                        (*next) = '\0';
                        next++;
                }

                if (!strncmp(options, "mode:", 5)) {
                        options = pm3fb_boardnum_setup(options + 5, &bn);
                        DPRINTK(2, "Setting mode for board #%ld\n", bn);
                        pm3fb_mode_setup(options, bn);
                } else if (!strncmp(options, "off:", 4)) {
                        options = pm3fb_boardnum_setup(options + 4, &bn);
                        DPRINTK(2, "Disabling board #%ld\n", bn);
                        disable[bn] = 1;
                } else if (!strncmp(options, "off", 3)) {       /* disable everything */
                        for (i = 0; i < PM3_MAX_BOARD; i++)
                                disable[i] = 1;
                } else if (!strncmp(options, "disable:", 8)) {
                        options = pm3fb_boardnum_setup(options + 8, &bn);
                        DPRINTK(2, "Disabling board #%ld\n", bn);
                        disable[bn] = 1;
                } else if (!strncmp(options, "pciid:", 6)) {
                        options = pm3fb_boardnum_setup(options + 6, &bn);
                        DPRINTK(2, "Setting PciID for board #%ld\n", bn);
                        pm3fb_pciid_setup(options, bn);
                } else if (!strncmp(options, "noaccel:", 8)) {
                        options = pm3fb_boardnum_setup(options + 8, &bn);
                        noaccel[bn] = 1;
                } else if (!strncmp(options, "font:", 5)) {
                        options = pm3fb_boardnum_setup(options + 5, &bn);
                        pm3fb_font_setup(options, bn);
                } else if (!strncmp(options, "depth:", 6)) {
                        options = pm3fb_boardnum_setup(options + 6, &bn);
                        pm3fb_bootdepth_setup(options, bn);
                } else if (!strncmp(options, "printtimings", 12)) {
                        printtimings = 1;
                } else if (!strncmp(options, "flatpanel:", 10)) {
                        options = pm3fb_boardnum_setup(options + 10, &bn);
                        flatpanel[bn] = 1;
                } else if (!strncmp(options, "forcesize:", 10)) {
                        options = pm3fb_boardnum_setup(options + 10, &bn);
                        pm3fb_forcesize_setup(options, bn);
                }
                options = next;
        }
}

/* ********************************************** */
/* ***** framebuffer API standard functions ***** */
/* ********************************************** */

static int pm3fb_encode_fix(struct fb_fix_screeninfo *fix,
                            const void *par, struct fb_info_gen *info)
{
        struct pm3fb_info *l_fb_info = (struct pm3fb_info *) info;
        struct pm3fb_par *p = (struct pm3fb_par *) par;

        DTRACE;

        strcpy(fix->id, permedia3_name);
        fix->smem_start = (unsigned long)l_fb_info->p_fb;
        fix->smem_len = l_fb_info->fb_size;
        fix->mmio_start = (unsigned long)l_fb_info->pIOBase;
        fix->mmio_len = PM3_REGS_SIZE;
#ifdef PM3FB_USE_ACCEL
        if (!(noaccel[l_fb_info->board_num]))
                fix->accel = FB_ACCEL_3DLABS_PERMEDIA3;
        else
#endif /* PM3FB_USE_ACCEL */
                fix->accel = FB_ACCEL_NONE;
        fix->type = FB_TYPE_PACKED_PIXELS;
        fix->visual =
            (p->depth == 8) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
        if (current_par_valid[l_fb_info->board_num])
                fix->line_length =
                        l_fb_info->current_par->width *
                        depth2ByPP(l_fb_info->current_par->depth);
        else
                fix->line_length = 0;
        fix->xpanstep = 64 / depth2bpp(p->depth);
        fix->ypanstep = 1;
        fix->ywrapstep = 0;
        return (0);
}

static int pm3fb_decode_var(const struct fb_var_screeninfo *var,
                            void *par, struct fb_info_gen *info)
{
        struct pm3fb_info *l_fb_info = (struct pm3fb_info *) info;
        struct pm3fb_par *p = (struct pm3fb_par *) par;
        struct pm3fb_par temp_p;
        u32 xres;

        DTRACE;

        DASSERT((var != NULL), "fb_var_screeninfo* not NULL");
        DASSERT((p != NULL), "pm3fb_par* not NULL");
        DASSERT((l_fb_info != NULL), "pm3fb_info* not NULL");

        memset(&temp_p, 0, sizeof(struct pm3fb_par));
        temp_p.width = (var->xres_virtual + 7) & ~7;
        temp_p.height = var->yres_virtual;

        if (!(depth_supported(var->bits_per_pixel))) /* round unsupported up to a multiple of 8 */
                temp_p.depth = depth2bpp(var->bits_per_pixel);
        else
                temp_p.depth = var->bits_per_pixel;

        temp_p.depth = (temp_p.depth > 32) ? 32 : temp_p.depth; /* max 32 */
        temp_p.depth = (temp_p.depth == 24) ? 32 : temp_p.depth; /* 24 unsupported, round-up to 32 */

        if ((temp_p.depth == 16) && (var->red.length == 5) && (var->green.length == 5) && (var->blue.length == 5))
                temp_p.depth = 15; /* RGBA 5551 is stored as depth 15 */

        if ((temp_p.depth == 16) && (var->red.length == 4) && (var->green.length == 4) && (var->blue.length == 4))
                temp_p.depth = 12; /* RGBA 4444  is stored as depth 12 */


        DPRINTK(2,
                "xres: %d, yres: %d, vxres: %d, vyres: %d ; xoffset:%d, yoffset: %d\n",
                var->xres, var->yres, var->xres_virtual, var->yres_virtual,
                var->xoffset, var->yoffset);

        xres = (var->xres + 31) & ~31;
        if (temp_p.width < xres + var->xoffset)
                temp_p.width = xres + var->xoffset;
        if (temp_p.height < var->yres + var->yoffset)
                temp_p.height = var->yres + var->yoffset;

        if (temp_p.width > 2048) {
                DPRINTK(1, "virtual width not supported: %u\n",
                        temp_p.width);
                return (-EINVAL);
        }
        if (var->yres < 200) {
                DPRINTK(1, "height not supported: %u\n", (u32) var->yres);
                return (-EINVAL);
        }
        if (temp_p.height < 200 || temp_p.height > 4095) {
                DPRINTK(1, "virtual height not supported: %u\n",
                        temp_p.height);
                return (-EINVAL);
        }
        if (!(depth_supported(temp_p.depth))) {
                DPRINTK(1, "depth not supported: %u\n", temp_p.depth);
                return (-EINVAL);
        }
        if ((temp_p.width * temp_p.height * depth2ByPP(temp_p.depth)) >
            l_fb_info->fb_size) {
                DPRINTK(1, "no memory for screen (%ux%ux%u)\n",
                        temp_p.width, temp_p.height, temp_p.depth);
                return (-EINVAL);
        }

        if ((!var->pixclock) ||
            (!var->right_margin) ||
            (!var->hsync_len) ||
            (!var->left_margin) ||
            (!var->lower_margin) ||
            (!var->vsync_len) || (!var->upper_margin)
            ) {
                unsigned long i = 0, done = 0;
                printk(KERN_WARNING "pm3fb: refusing to use a likely wrong timing\n");

                while ((mode_base[i].user_mode.width) && !done) {
                        if ((mode_base[i].user_mode.width == temp_p.width)
                            && (mode_base[i].user_mode.height ==
                                temp_p.height)) {
                                printk(KERN_NOTICE "pm3fb: using close match %s\n",
                                       mode_base[i].name);
                                temp_p = mode_base[i].user_mode;
                                done = 1;
                        }
                        i++;
                }
                if (!done)
                        return (-EINVAL);
        } else {
                temp_p.pixclock = PICOS2KHZ(var->pixclock);
                if (temp_p.pixclock > PM3_MAX_PIXCLOCK) {
                        DPRINTK(1, "pixclock too high (%uKHz)\n",
                                temp_p.pixclock);
                        return (-EINVAL);
                }

                temp_p.hsstart = var->right_margin;
                temp_p.hsend = var->right_margin + var->hsync_len;
                temp_p.hbend =
                    var->right_margin + var->hsync_len + var->left_margin;
                temp_p.htotal = xres + temp_p.hbend;

                temp_p.vsstart = var->lower_margin;
                temp_p.vsend = var->lower_margin + var->vsync_len;
                temp_p.vbend =
                    var->lower_margin + var->vsync_len + var->upper_margin;
                temp_p.vtotal = var->yres + temp_p.vbend;

                temp_p.stride = temp_p.width;

                DPRINTK(2, "Using %d * %d, %d Khz, stride is %08x\n",
                        temp_p.width, temp_p.height, temp_p.pixclock,
                        temp_p.stride);

                temp_p.base =
                    pm3fb_Shiftbpp(l_fb_info, temp_p.depth,
                                   (var->yoffset * xres) + var->xoffset);

                temp_p.video = 0;

                if (var->sync & FB_SYNC_HOR_HIGH_ACT)
                        temp_p.video |= PM3VideoControl_HSYNC_ACTIVE_HIGH;
                else
                        temp_p.video |= PM3VideoControl_HSYNC_ACTIVE_LOW;

                if (var->sync & FB_SYNC_VERT_HIGH_ACT)
                        temp_p.video |= PM3VideoControl_VSYNC_ACTIVE_HIGH;
                else
                        temp_p.video |= PM3VideoControl_VSYNC_ACTIVE_LOW;

                if ((var->vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED) {
                        DPRINTK(1, "Interlaced mode not supported\n\n");
                        return (-EINVAL);
                }

                if ((var->vmode & FB_VMODE_MASK) == FB_VMODE_DOUBLE)
                        temp_p.video |= PM3VideoControl_LINE_DOUBLE_ON;
                else
                        temp_p.video |= PM3VideoControl_LINE_DOUBLE_OFF;

                if (var->activate == FB_ACTIVATE_NOW)
                        temp_p.video |= PM3VideoControl_ENABLE;
                else {
                        temp_p.video |= PM3VideoControl_DISABLE;
                        DPRINTK(2, "PM3Video disabled\n");
                }

                switch (temp_p.depth) {
                case 8:
                        temp_p.video |= PM3VideoControl_PIXELSIZE_8BIT;
                        break;
                case 12:
                case 15:
                case 16:
                        temp_p.video |= PM3VideoControl_PIXELSIZE_16BIT;
                        break;
                case 32:
                        temp_p.video |= PM3VideoControl_PIXELSIZE_32BIT;
                        break;
                default:
                        DPRINTK(1, "Unsupported depth\n");
                        break;
                }
        }
        (*p) = temp_p;

#ifdef PM3FB_USE_ACCEL
        if (var->accel_flags & FB_ACCELF_TEXT)
                noaccel[l_fb_info->board_num] = 0;
        else
                noaccel[l_fb_info->board_num] = 1;
#endif /* PM3FB_USE_ACCEL */

        return (0);
}

static void pm3fb_encode_depth(struct fb_var_screeninfo *var, long d)
{
        switch (d) {
        case 8:
                var->red.length = var->green.length = var->blue.length = 8;
                var->red.offset = var->green.offset = var->blue.offset = 0;
                var->transp.offset = var->transp.length = 0;
                break;

        case 12:
                var->red.offset = 8;
                var->red.length = 4;
                var->green.offset = 4;
                var->green.length = 4;
                var->blue.offset = 0;
                var->blue.length = 4;
                var->transp.offset = 12;
                var->transp.length = 4;
                break;