[TG3]: Set minimal hw interrupt mitigation.

[linux-2.6/verdex.git] / drivers / video / cyber2000fb.h

/*
 *  linux/drivers/video/cyber2000fb.h
 *
 *  Copyright (C) 1998-2000 Russell King
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * Integraphics Cyber2000 frame buffer device
 */
#include <linux/config.h>

/*
 * Internal CyberPro sizes and offsets.
 */
#define MMIO_OFFSET     0x00800000
#define MMIO_SIZE       0x000c0000

#define NR_PALETTE      256

#if defined(DEBUG) && defined(CONFIG_DEBUG_LL)
static void debug_printf(char *fmt, ...)
{
        extern void printascii(const char *);
        char buffer[128];
        va_list ap;

        va_start(ap, fmt);
        vsprintf(buffer, fmt, ap);
        va_end(ap);

        printascii(buffer);
}
#else
#define debug_printf(x...) do { } while (0)
#endif

#define RAMDAC_RAMPWRDN         0x01
#define RAMDAC_DAC8BIT          0x02
#define RAMDAC_VREFEN           0x04
#define RAMDAC_BYPASS           0x10
#define RAMDAC_DACPWRDN         0x40

#define EXT_CRT_VRTOFL          0x11
#define EXT_CRT_VRTOFL_LINECOMP10       0x10
#define EXT_CRT_VRTOFL_INTERLACE        0x20

#define EXT_CRT_IRQ             0x12
#define EXT_CRT_IRQ_ENABLE              0x01
#define EXT_CRT_IRQ_ACT_HIGH            0x04

#define EXT_CRT_TEST            0x13

#define EXT_SYNC_CTL            0x16
#define EXT_SYNC_CTL_HS_NORMAL          0x00
#define EXT_SYNC_CTL_HS_0               0x01
#define EXT_SYNC_CTL_HS_1               0x02
#define EXT_SYNC_CTL_HS_HSVS            0x03
#define EXT_SYNC_CTL_VS_NORMAL          0x00
#define EXT_SYNC_CTL_VS_0               0x04
#define EXT_SYNC_CTL_VS_1               0x08
#define EXT_SYNC_CTL_VS_COMP            0x0c

#define EXT_BUS_CTL             0x30
#define EXT_BUS_CTL_LIN_1MB             0x00
#define EXT_BUS_CTL_LIN_2MB             0x01
#define EXT_BUS_CTL_LIN_4MB             0x02
#define EXT_BUS_CTL_ZEROWAIT            0x04
#define EXT_BUS_CTL_PCIBURST_WRITE      0x20
#define EXT_BUS_CTL_PCIBURST_READ       0x80    /* CyberPro 5000 only */

#define EXT_SEG_WRITE_PTR       0x31
#define EXT_SEG_READ_PTR        0x32
#define EXT_BIU_MISC            0x33
#define EXT_BIU_MISC_LIN_ENABLE         0x01
#define EXT_BIU_MISC_COP_ENABLE         0x04
#define EXT_BIU_MISC_COP_BFC            0x08

#define EXT_FUNC_CTL            0x3c
#define EXT_FUNC_CTL_EXTREGENBL         0x80    /* enable access to 0xbcxxx             */

#define PCI_BM_CTL              0x3e
#define PCI_BM_CTL_ENABLE               0x01    /* enable bus-master                    */
#define PCI_BM_CTL_BURST                0x02    /* enable burst                         */
#define PCI_BM_CTL_BACK2BACK            0x04    /* enable back to back                  */
#define PCI_BM_CTL_DUMMY                0x08    /* insert dummy cycle                   */

#define X_V2_VID_MEM_START      0x40
#define X_V2_VID_SRC_WIDTH      0x43
#define X_V2_X_START            0x45
#define X_V2_X_END              0x47
#define X_V2_Y_START            0x49
#define X_V2_Y_END              0x4b
#define X_V2_VID_SRC_WIN_WIDTH  0x4d

#define Y_V2_DDA_X_INC          0x43
#define Y_V2_DDA_Y_INC          0x47
#define Y_V2_VID_FIFO_CTL       0x49
#define Y_V2_VID_FMT            0x4b
#define Y_V2_VID_DISP_CTL1      0x4c
#define Y_V2_VID_FIFO_CTL1      0x4d

#define J_X2_VID_MEM_START      0x40
#define J_X2_VID_SRC_WIDTH      0x43
#define J_X2_X_START            0x47
#define J_X2_X_END              0x49
#define J_X2_Y_START            0x4b
#define J_X2_Y_END              0x4d
#define J_X2_VID_SRC_WIN_WIDTH  0x4f

#define K_X2_DDA_X_INIT         0x40
#define K_X2_DDA_X_INC          0x42
#define K_X2_DDA_Y_INIT         0x44
#define K_X2_DDA_Y_INC          0x46
#define K_X2_VID_FMT            0x48
#define K_X2_VID_DISP_CTL1      0x49

#define K_CAP_X2_CTL1           0x49

#define CURS_H_START            0x50
#define CURS_H_PRESET           0x52
#define CURS_V_START            0x53
#define CURS_V_PRESET           0x55
#define CURS_CTL                0x56

#define EXT_ATTRIB_CTL          0x57
#define EXT_ATTRIB_CTL_EXT              0x01

#define EXT_OVERSCAN_RED        0x58
#define EXT_OVERSCAN_GREEN      0x59
#define EXT_OVERSCAN_BLUE       0x5a

#define CAP_X_START             0x60
#define CAP_X_END               0x62
#define CAP_Y_START             0x64
#define CAP_Y_END               0x66
#define CAP_DDA_X_INIT          0x68
#define CAP_DDA_X_INC           0x6a
#define CAP_DDA_Y_INIT          0x6c
#define CAP_DDA_Y_INC           0x6e

#define EXT_MEM_CTL0            0x70
#define EXT_MEM_CTL0_7CLK               0x01
#define EXT_MEM_CTL0_RAS_1              0x02
#define EXT_MEM_CTL0_RAS2CAS_1          0x04
#define EXT_MEM_CTL0_MULTCAS            0x08
#define EXT_MEM_CTL0_ASYM               0x10
#define EXT_MEM_CTL0_CAS1ON             0x20
#define EXT_MEM_CTL0_FIFOFLUSH          0x40
#define EXT_MEM_CTL0_SEQRESET           0x80

#define EXT_MEM_CTL1            0x71
#define EXT_MEM_CTL1_PAR                0x00
#define EXT_MEM_CTL1_SERPAR             0x01
#define EXT_MEM_CTL1_SER                0x03
#define EXT_MEM_CTL1_SYNC               0x04
#define EXT_MEM_CTL1_VRAM               0x08
#define EXT_MEM_CTL1_4K_REFRESH         0x10
#define EXT_MEM_CTL1_256Kx4             0x00
#define EXT_MEM_CTL1_512Kx8             0x40
#define EXT_MEM_CTL1_1Mx16              0x60

#define EXT_MEM_CTL2            0x72
#define MEM_CTL2_SIZE_1MB               0x00
#define MEM_CTL2_SIZE_2MB               0x01
#define MEM_CTL2_SIZE_4MB               0x02
#define MEM_CTL2_SIZE_MASK              0x03
#define MEM_CTL2_64BIT                  0x04

#define EXT_HIDDEN_CTL1         0x73

#define EXT_FIFO_CTL            0x74

#define EXT_SEQ_MISC            0x77
#define EXT_SEQ_MISC_8                  0x01
#define EXT_SEQ_MISC_16_RGB565          0x02
#define EXT_SEQ_MISC_32                 0x03
#define EXT_SEQ_MISC_24_RGB888          0x04
#define EXT_SEQ_MISC_16_RGB555          0x06
#define EXT_SEQ_MISC_8_RGB332           0x09
#define EXT_SEQ_MISC_16_RGB444          0x0a

#define EXT_HIDDEN_CTL4         0x7a

#define CURS_MEM_START          0x7e            /* bits 23..12 */

#define CAP_PIP_X_START         0x80
#define CAP_PIP_X_END           0x82
#define CAP_PIP_Y_START         0x84
#define CAP_PIP_Y_END           0x86

#define EXT_CAP_CTL1            0x88

#define EXT_CAP_CTL2            0x89
#define EXT_CAP_CTL2_ODDFRAMEIRQ        0x01
#define EXT_CAP_CTL2_ANYFRAMEIRQ        0x02

#define BM_CTRL0                0x9c
#define BM_CTRL1                0x9d

#define EXT_CAP_MODE1           0xa4
#define EXT_CAP_MODE1_8BIT              0x01    /* enable 8bit capture mode             */
#define EXT_CAP_MODE1_CCIR656           0x02    /* CCIR656 mode                         */
#define EXT_CAP_MODE1_IGNOREVGT         0x04    /* ignore VGT                           */
#define EXT_CAP_MODE1_ALTFIFO           0x10    /* use alternate FIFO for capture       */
#define EXT_CAP_MODE1_SWAPUV            0x20    /* swap UV bytes                        */
#define EXT_CAP_MODE1_MIRRORY           0x40    /* mirror vertically                    */
#define EXT_CAP_MODE1_MIRRORX           0x80    /* mirror horizontally                  */

#define EXT_CAP_MODE2           0xa5
#define EXT_CAP_MODE2_CCIRINVOE         0x01
#define EXT_CAP_MODE2_CCIRINVVGT        0x02
#define EXT_CAP_MODE2_CCIRINVHGT        0x04
#define EXT_CAP_MODE2_CCIRINVDG         0x08
#define EXT_CAP_MODE2_DATEND            0x10
#define EXT_CAP_MODE2_CCIRDGH           0x20
#define EXT_CAP_MODE2_FIXSONY           0x40
#define EXT_CAP_MODE2_SYNCFREEZE        0x80

#define EXT_TV_CTL              0xae

#define EXT_DCLK_MULT           0xb0
#define EXT_DCLK_DIV            0xb1
#define EXT_DCLK_DIV_VFSEL              0x20
#define EXT_MCLK_MULT           0xb2
#define EXT_MCLK_DIV            0xb3

#define EXT_LATCH1              0xb5
#define EXT_LATCH1_VAFC_EN              0x01    /* enable VAFC                          */

#define EXT_FEATURE             0xb7
#define EXT_FEATURE_BUS_MASK            0x07    /* host bus mask                        */
#define EXT_FEATURE_BUS_PCI             0x00
#define EXT_FEATURE_BUS_VL_STD          0x04
#define EXT_FEATURE_BUS_VL_LINEAR       0x05
#define EXT_FEATURE_1682                0x20    /* IGS 1682 compatibility               */

#define EXT_LATCH2              0xb6
#define EXT_LATCH2_I2C_CLKEN            0x10
#define EXT_LATCH2_I2C_CLK              0x20
#define EXT_LATCH2_I2C_DATEN            0x40
#define EXT_LATCH2_I2C_DAT              0x80

#define EXT_XT_CTL              0xbe
#define EXT_XT_CAP16                    0x04
#define EXT_XT_LINEARFB                 0x08
#define EXT_XT_PAL                      0x10

#define EXT_MEM_START           0xc0            /* ext start address 21 bits            */
#define HOR_PHASE_SHIFT         0xc2            /* high 3 bits                          */
#define EXT_SRC_WIDTH           0xc3            /* ext offset phase  10 bits            */
#define EXT_SRC_HEIGHT          0xc4            /* high 6 bits                          */
#define EXT_X_START             0xc5            /* ext->screen, 16 bits                 */
#define EXT_X_END               0xc7            /* ext->screen, 16 bits                 */
#define EXT_Y_START             0xc9            /* ext->screen, 16 bits                 */
#define EXT_Y_END               0xcb            /* ext->screen, 16 bits                 */
#define EXT_SRC_WIN_WIDTH       0xcd            /* 8 bits                               */
#define EXT_COLOUR_COMPARE      0xce            /* 24 bits                              */
#define EXT_DDA_X_INIT          0xd1            /* ext->screen 16 bits                  */
#define EXT_DDA_X_INC           0xd3            /* ext->screen 16 bits                  */
#define EXT_DDA_Y_INIT          0xd5            /* ext->screen 16 bits                  */
#define EXT_DDA_Y_INC           0xd7            /* ext->screen 16 bits                  */

#define EXT_VID_FIFO_CTL        0xd9

#define EXT_VID_FMT             0xdb
#define EXT_VID_FMT_YUV422              0x00    /* formats - does this cause conversion? */
#define EXT_VID_FMT_RGB555              0x01
#define EXT_VID_FMT_RGB565              0x02
#define EXT_VID_FMT_RGB888_24           0x03
#define EXT_VID_FMT_RGB888_32           0x04
#define EXT_VID_FMT_RGB8                0x05
#define EXT_VID_FMT_RGB4444             0x06
#define EXT_VID_FMT_RGB8T               0x07
#define EXT_VID_FMT_DUP_PIX_ZOON        0x08    /* duplicate pixel zoom                 */
#define EXT_VID_FMT_MOD_3RD_PIX         0x20    /* modify 3rd duplicated pixel          */
#define EXT_VID_FMT_DBL_H_PIX           0x40    /* double horiz pixels                  */
#define EXT_VID_FMT_YUV128              0x80    /* YUV data offset by 128               */

#define EXT_VID_DISP_CTL1       0xdc
#define EXT_VID_DISP_CTL1_INTRAM        0x01    /* video pixels go to internal RAM      */
#define EXT_VID_DISP_CTL1_IGNORE_CCOMP  0x02    /* ignore colour compare registers      */
#define EXT_VID_DISP_CTL1_NOCLIP        0x04    /* do not clip to 16235,16240           */
#define EXT_VID_DISP_CTL1_UV_AVG        0x08    /* U/V data is averaged                 */
#define EXT_VID_DISP_CTL1_Y128          0x10    /* Y data offset by 128 (if YUV128 set) */
#define EXT_VID_DISP_CTL1_VINTERPOL_OFF 0x20    /* disable vertical interpolation       */
#define EXT_VID_DISP_CTL1_FULL_WIN      0x40    /* video out window full                */
#define EXT_VID_DISP_CTL1_ENABLE_WINDOW 0x80    /* enable video window                  */

#define EXT_VID_FIFO_CTL1       0xdd
#define EXT_VID_FIFO_CTL1_OE_HIGH       0x02
#define EXT_VID_FIFO_CTL1_INTERLEAVE    0x04    /* enable interleaved memory read       */

#define EXT_ROM_UCB4GH          0xe5
#define EXT_ROM_UCB4GH_FREEZE           0x02    /* capture frozen                       */
#define EXT_ROM_UCB4GH_ODDFRAME         0x04    /* 1 = odd frame captured               */
#define EXT_ROM_UCB4GH_1HL              0x08    /* first horizonal line after VGT falling edge */
#define EXT_ROM_UCB4GH_ODD              0x10    /* odd frame indicator                  */
#define EXT_ROM_UCB4GH_INTSTAT          0x20    /* video interrupt                      */

#define VFAC_CTL1               0xe8
#define VFAC_CTL1_CAPTURE               0x01    /* capture enable (only when VSYNC high)*/
#define VFAC_CTL1_VFAC_ENABLE           0x02    /* vfac enable                          */
#define VFAC_CTL1_FREEZE_CAPTURE        0x04    /* freeze capture                       */
#define VFAC_CTL1_FREEZE_CAPTURE_SYNC   0x08    /* sync freeze capture                  */
#define VFAC_CTL1_VALIDFRAME_SRC        0x10    /* select valid frame source            */
#define VFAC_CTL1_PHILIPS               0x40    /* select Philips mode                  */
#define VFAC_CTL1_MODVINTERPOLCLK       0x80    /* modify vertical interpolation clocl  */

#define VFAC_CTL2               0xe9
#define VFAC_CTL2_INVERT_VIDDATAVALID   0x01    /* invert video data valid              */
#define VFAC_CTL2_INVERT_GRAPHREADY     0x02    /* invert graphic ready output sig      */
#define VFAC_CTL2_INVERT_DATACLK        0x04    /* invert data clock signal             */
#define VFAC_CTL2_INVERT_HSYNC          0x08    /* invert hsync input                   */
#define VFAC_CTL2_INVERT_VSYNC          0x10    /* invert vsync input                   */
#define VFAC_CTL2_INVERT_FRAME          0x20    /* invert frame odd/even input          */
#define VFAC_CTL2_INVERT_BLANK          0x40    /* invert blank output                  */
#define VFAC_CTL2_INVERT_OVSYNC         0x80    /* invert other vsync input             */

#define VFAC_CTL3               0xea
#define VFAC_CTL3_CAP_LARGE_FIFO        0x01    /* large capture fifo                   */
#define VFAC_CTL3_CAP_INTERLACE         0x02    /* capture odd and even fields          */
#define VFAC_CTL3_CAP_HOLD_4NS          0x00    /* hold capture data for 4ns            */
#define VFAC_CTL3_CAP_HOLD_2NS          0x04    /* hold capture data for 2ns            */
#define VFAC_CTL3_CAP_HOLD_6NS          0x08    /* hold capture data for 6ns            */
#define VFAC_CTL3_CAP_HOLD_0NS          0x0c    /* hold capture data for 0ns            */
#define VFAC_CTL3_CHROMAKEY             0x20    /* capture data will be chromakeyed     */
#define VFAC_CTL3_CAP_IRQ               0x40    /* enable capture interrupt             */

#define CAP_MEM_START           0xeb            /* 18 bits                              */
#define CAP_MAP_WIDTH           0xed            /* high 6 bits                          */
#define CAP_PITCH               0xee            /* 8 bits                               */

#define CAP_CTL_MISC            0xef
#define CAP_CTL_MISC_HDIV               0x01
#define CAP_CTL_MISC_HDIV4              0x02
#define CAP_CTL_MISC_ODDEVEN            0x04
#define CAP_CTL_MISC_HSYNCDIV2          0x08
#define CAP_CTL_MISC_SYNCTZHIGH         0x10
#define CAP_CTL_MISC_SYNCTZOR           0x20
#define CAP_CTL_MISC_DISPUSED           0x80

#define REG_BANK                0xfa
#define REG_BANK_X                      0x00
#define REG_BANK_Y                      0x01
#define REG_BANK_W                      0x02
#define REG_BANK_T                      0x03
#define REG_BANK_J                      0x04
#define REG_BANK_K                      0x05

/*
 * Bus-master
 */
#define BM_VID_ADDR_LOW         0xbc040
#define BM_VID_ADDR_HIGH        0xbc044
#define BM_ADDRESS_LOW          0xbc080
#define BM_ADDRESS_HIGH         0xbc084
#define BM_LENGTH               0xbc088
#define BM_CONTROL              0xbc08c
#define BM_CONTROL_ENABLE               0x01    /* enable transfer                      */
#define BM_CONTROL_IRQEN                0x02    /* enable IRQ at end of transfer        */
#define BM_CONTROL_INIT                 0x04    /* initialise status & count            */
#define BM_COUNT                0xbc090         /* read-only                            */

/*
 * TV registers
 */
#define TV_VBLANK_EVEN_START    0xbe43c
#define TV_VBLANK_EVEN_END      0xbe440
#define TV_VBLANK_ODD_START     0xbe444
#define TV_VBLANK_ODD_END       0xbe448
#define TV_SYNC_YGAIN           0xbe44c
#define TV_UV_GAIN              0xbe450
#define TV_PED_UVDET            0xbe454
#define TV_UV_BURST_AMP         0xbe458
#define TV_HSYNC_START          0xbe45c
#define TV_HSYNC_END            0xbe460
#define TV_Y_DELAY1             0xbe464
#define TV_Y_DELAY2             0xbe468
#define TV_UV_DELAY1            0xbe46c
#define TV_BURST_START          0xbe470
#define TV_BURST_END            0xbe474
#define TV_HBLANK_START         0xbe478
#define TV_HBLANK_END           0xbe47c
#define TV_PED_EVEN_START       0xbe480
#define TV_PED_EVEN_END         0xbe484
#define TV_PED_ODD_START        0xbe488
#define TV_PED_ODD_END          0xbe48c
#define TV_VSYNC_EVEN_START     0xbe490
#define TV_VSYNC_EVEN_END       0xbe494
#define TV_VSYNC_ODD_START      0xbe498
#define TV_VSYNC_ODD_END        0xbe49c
#define TV_SCFL                 0xbe4a0
#define TV_SCFH                 0xbe4a4
#define TV_SCP                  0xbe4a8
#define TV_DELAYBYPASS          0xbe4b4
#define TV_EQL_END              0xbe4bc
#define TV_SERR_START           0xbe4c0
#define TV_SERR_END             0xbe4c4
#define TV_CTL                  0xbe4dc /* reflects a previous register- MVFCLR, MVPCLR etc P241*/
#define TV_VSYNC_VGA_HS         0xbe4e8
#define TV_FLICK_XMIN           0xbe514
#define TV_FLICK_XMAX           0xbe518
#define TV_FLICK_YMIN           0xbe51c
#define TV_FLICK_YMAX           0xbe520

/*
 * Graphics Co-processor
 */
#define CO_REG_CONTROL          0xbf011
#define CO_CTRL_BUSY                    0x80
#define CO_CTRL_CMDFULL                 0x04
#define CO_CTRL_FIFOEMPTY               0x02
#define CO_CTRL_READY                   0x01

#define CO_REG_SRC_WIDTH        0xbf018
#define CO_REG_PIXFMT           0xbf01c
#define CO_PIXFMT_32BPP                 0x03
#define CO_PIXFMT_24BPP                 0x02
#define CO_PIXFMT_16BPP                 0x01
#define CO_PIXFMT_8BPP                  0x00

#define CO_REG_FGMIX            0xbf048
#define CO_FG_MIX_ZERO                  0x00
#define CO_FG_MIX_SRC_AND_DST           0x01
#define CO_FG_MIX_SRC_AND_NDST          0x02
#define CO_FG_MIX_SRC                   0x03
#define CO_FG_MIX_NSRC_AND_DST          0x04
#define CO_FG_MIX_DST                   0x05
#define CO_FG_MIX_SRC_XOR_DST           0x06
#define CO_FG_MIX_SRC_OR_DST            0x07
#define CO_FG_MIX_NSRC_AND_NDST         0x08
#define CO_FG_MIX_SRC_XOR_NDST          0x09
#define CO_FG_MIX_NDST                  0x0a
#define CO_FG_MIX_SRC_OR_NDST           0x0b
#define CO_FG_MIX_NSRC                  0x0c
#define CO_FG_MIX_NSRC_OR_DST           0x0d
#define CO_FG_MIX_NSRC_OR_NDST          0x0e
#define CO_FG_MIX_ONES                  0x0f

#define CO_REG_FGCOLOUR         0xbf058
#define CO_REG_BGCOLOUR         0xbf05c
#define CO_REG_PIXWIDTH         0xbf060
#define CO_REG_PIXHEIGHT        0xbf062
#define CO_REG_X_PHASE          0xbf078
#define CO_REG_CMD_L            0xbf07c
#define CO_CMD_L_PATTERN_FGCOL          0x8000
#define CO_CMD_L_INC_LEFT               0x0004
#define CO_CMD_L_INC_UP                 0x0002

#define CO_REG_CMD_H            0xbf07e
#define CO_CMD_H_BGSRCMAP               0x8000  /* otherwise bg colour */
#define CO_CMD_H_FGSRCMAP               0x2000  /* otherwise fg colour */
#define CO_CMD_H_BLITTER                0x0800

#define CO_REG_SRC1_PTR         0xbf170
#define CO_REG_SRC2_PTR         0xbf174
#define CO_REG_DEST_PTR         0xbf178
#define CO_REG_DEST_WIDTH       0xbf218

/*
 * Private structure
 */
struct cfb_info;

struct cyberpro_info {
        struct pci_dev  *dev;
        unsigned char   __iomem *regs;
        char            __iomem *fb;
        char            dev_name[32];
        unsigned int    fb_size;
        unsigned int    chip_id;

        /*
         * The following is a pointer to be passed into the
         * functions below.  The modules outside the main
         * cyber2000fb.c driver have no knowledge as to what
         * is within this structure.
         */
        struct cfb_info *info;

        /*
         * Use these to enable the BM or TV registers.  In an SMP
         * environment, these two function pointers should only be
         * called from the module_init() or module_exit()
         * functions.
         */
        void (*enable_extregs)(struct cfb_info *);
        void (*disable_extregs)(struct cfb_info *);
};

#define ID_IGA_1682             0
#define ID_CYBERPRO_2000        1
#define ID_CYBERPRO_2010        2
#define ID_CYBERPRO_5000        3

struct fb_var_screeninfo;

/*
 * Note! Writing to the Cyber20x0 registers from an interrupt
 * routine is definitely a bad idea atm.
 */
int cyber2000fb_attach(struct cyberpro_info *info, int idx);
void cyber2000fb_detach(int idx);
void cyber2000fb_enable_extregs(struct cfb_info *cfb);
void cyber2000fb_disable_extregs(struct cfb_info *cfb);
void cyber2000fb_get_fb_var(struct cfb_info *cfb, struct fb_var_screeninfo *var);