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cyberfb.c
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cyberfb.c
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/*
* linux/drivers/video/cyberfb.c -- CyberVision64 frame buffer device
* $Id: cyberfb.c,v 1.6 1998/09/11 04:54:58 abair Exp $
*
* Copyright (C) 1998 Alan Bair
*
* This file is based on two CyberVision64 frame buffer device drivers
*
* The second CyberVision64 frame buffer device (cvision.c cvision_core.c):
*
* Copyright (c) 1997 Antonio Santos
*
* Released as a patch to 2.1.35, but never included in the source tree.
* This is based on work from the NetBSD CyberVision64 frame buffer driver
* and support files (grf_cv.c, grf_cvreg.h, ite_cv.c):
* Permission to use the source of this driver was obtained from the
* author Michael Teske by Alan Bair.
*
* Copyright (c) 1995 Michael Teske
*
* The first CyberVision64 frame buffer device (cyberfb.c):
*
* Copyright (C) 1996 Martin Apel
* Geert Uytterhoeven
*
* Which is based on the Amiga frame buffer device (amifb.c):
*
* Copyright (C) 1995 Geert Uytterhoeven
*
*
* History:
* - 22 Dec 95: Original version by Martin Apel
* - 05 Jan 96: Geert: integration into the current source tree
* - 01 Aug 98: Alan: Merge in code from cvision.c and cvision_core.c
* $Log: cyberfb.c,v $
* Revision 1.6 1998/09/11 04:54:58 abair
* Update for 2.1.120 change in include file location.
* Clean up for public release.
*
* Revision 1.5 1998/09/03 04:27:13 abair
* Move cv64_load_video_mode to cyber_set_video so a new video mode is install
* with each change of the 'var' data.
*
* Revision 1.4 1998/09/01 00:31:17 abair
* Put in a set of default 8,16,24 bpp modes and map cyber8,16 to them.
* Update operations with 'par' to handle a more complete set of parameter
* values for encode/decode process.
*
* Revision 1.3 1998/08/31 21:31:33 abair
* Swap 800x490 for 640x480 video mode and more cleanup.
* Abandon idea to resurrect "custom" mode setting via kernel opts,
* instead work on making use of fbset program to do this.
*
* Revision 1.2 1998/08/31 06:17:08 abair
* Make updates for changes in cyberfb.c released in 2.1.119
* and do some cleanup of the code.
*
* Revision 1.1 1998/08/29 18:38:31 abair
* Initial revision
*
* Revision 1.3 1998/08/17 06:21:53 abair
* Remove more redundant code after merging in cvision_core.c
* Set blanking by colormap to pale red to detect this vs trying to
* use video blanking. More formating to Linux code style.
*
* Revision 1.2 1998/08/15 17:51:37 abair
* Added cvision_core.c code from 2.1.35 patches.
* Changed to compile correctly and switch to using initialization
* code. Added debugging and dropping of duplicate code.
*
*
*
* 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.
*/
#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/delay.h>
#include <linux/zorro.h>
#include <linux/fb.h>
#include <linux/init.h>
#include <asm/uaccess.h>
#include <asm/system.h>
#include <asm/irq.h>
#include <asm/pgtable.h>
#include <asm/amigahw.h>
#include <asm/io.h>
#include "cyberfb.h"
#include <video/fbcon.h>
#include <video/fbcon-cfb8.h>
#include <video/fbcon-cfb16.h>
/*#define CYBERFBDEBUG*/
#ifdef CYBERFBDEBUG
#define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __FUNCTION__ , ## args)
static void cv64_dump(void);
#else
#define DPRINTK(fmt, args...)
#endif
#define wb_64(regs,reg,dat) (*(((volatile unsigned char *)regs) + reg) = dat)
#define rb_64(regs, reg) (*(((volatile unsigned char *)regs) + reg))
#define ww_64(regs,reg,dat) (*((volatile unsigned short *)(regs + reg) = dat)
struct cyberfb_par {
struct fb_var_screeninfo var;
__u32 type;
__u32 type_aux;
__u32 visual;
__u32 line_length;
};
static struct cyberfb_par current_par;
static int current_par_valid = 0;
static struct display disp;
static struct fb_info fb_info;
/*
* Frame Buffer Name
*/
static char cyberfb_name[16] = "Cybervision";
/*
* CyberVision Graphics Board
*/
static unsigned char Cyber_colour_table [256][3];
static unsigned long CyberSize;
static volatile unsigned char *CyberBase;
static volatile unsigned char *CyberMem;
static volatile unsigned char *CyberRegs;
static unsigned long CyberMem_phys;
static unsigned long CyberRegs_phys;
/*
* Predefined Video Modes
*/
static struct {
const char *name;
struct fb_var_screeninfo var;
} cyberfb_predefined[] __initdata = {
{ "640x480-8", { /* Default 8 BPP mode (cyber8) */
640, 480, 640, 480, 0, 0, 8, 0,
{0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 39722, 40, 24, 32, 11, 96, 2,
FB_SYNC_COMP_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED
}},
{ "640x480-16", { /* Default 16 BPP mode (cyber16) */
640, 480, 640, 480, 0, 0, 16, 0,
{11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 39722, 40, 24, 32, 11, 96, 2,
FB_SYNC_COMP_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED
}},
{ "640x480-24", { /* Default 24 BPP mode */
640, 480, 640, 480, 0, 0, 24, 0,
{16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {0, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 39722, 40, 24, 32, 11, 96, 2,
FB_SYNC_COMP_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED
}},
{ "800x490-8", { /* Cybervision 8 bpp */
/* NO Acceleration */
800, 490, 800, 490, 0, 0, 8, 0,
{0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
0, 0, -1, -1, FB_ACCEL_NONE, 33333, 80, 24, 23, 1, 56, 8,
FB_SYNC_COMP_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED
}},
/* I can't test these with my monitor, but I suspect they will
* be OK, since Antonio Santos indicated he had tested them in
* his system.
*/
{ "800x600-8", { /* Cybervision 8 bpp */
800, 600, 800, 600, 0, 0, 8, 0,
{0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 27778, 64, 24, 22, 1, 72, 2,
FB_SYNC_COMP_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED
}},
{ "1024x768-8", { /* Cybervision 8 bpp */
1024, 768, 1024, 768, 0, 0, 8, 0,
{0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 16667, 224, 72, 60, 12, 168, 4,
FB_SYNC_COMP_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED
}},
{ "1152x886-8", { /* Cybervision 8 bpp */
1152, 886, 1152, 886, 0, 0, 8, 0,
{0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 15873, 184, 40, 24, 1, 56, 16,
FB_SYNC_COMP_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_NONINTERLACED
}},
{ "1280x1024-8", { /* Cybervision 8 bpp */
1280, 1024, 1280, 1024, 0, 0, 8, 0,
{0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 16667, 256, 48, 50, 12, 72, 4,
FB_SYNC_COMP_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
FB_VMODE_INTERLACED
}}
};
#define NUM_TOTAL_MODES ARRAY_SIZE(cyberfb_predefined)
static int Cyberfb_inverse = 0;
/*
* Some default modes
*/
#define CYBER8_DEFMODE (0)
#define CYBER16_DEFMODE (1)
static struct fb_var_screeninfo cyberfb_default;
static int cyberfb_usermode __initdata = 0;
/*
* Interface used by the world
*/
int cyberfb_setup(char *options);
static int cyberfb_get_fix(struct fb_fix_screeninfo *fix, int con,
struct fb_info *info);
static int cyberfb_get_var(struct fb_var_screeninfo *var, int con,
struct fb_info *info);
static int cyberfb_set_var(struct fb_var_screeninfo *var, int con,
struct fb_info *info);
static int cyberfb_get_cmap(struct fb_cmap *cmap, int kspc, int con,
struct fb_info *info);
static int cyberfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
u_int transp, struct fb_info *info);
static int cyberfb_blank(int blank, struct fb_info *info);
/*
* Interface to the low level console driver
*/
int cyberfb_init(void);
static int Cyberfb_switch(int con, struct fb_info *info);
static int Cyberfb_updatevar(int con, struct fb_info *info);
/*
* Text console acceleration
*/
#ifdef FBCON_HAS_CFB8
static struct display_switch fbcon_cyber8;
#endif
/*
* Accelerated Functions used by the low level console driver
*/
static void Cyber_WaitQueue(u_short fifo);
static void Cyber_WaitBlit(void);
static void Cyber_BitBLT(u_short curx, u_short cury, u_short destx,
u_short desty, u_short width, u_short height,
u_short mode);
static void Cyber_RectFill(u_short x, u_short y, u_short width, u_short height,
u_short mode, u_short color);
#if 0
static void Cyber_MoveCursor(u_short x, u_short y);
#endif
/*
* Hardware Specific Routines
*/
static int Cyber_init(void);
static int Cyber_encode_fix(struct fb_fix_screeninfo *fix,
struct cyberfb_par *par);
static int Cyber_decode_var(struct fb_var_screeninfo *var,
struct cyberfb_par *par);
static int Cyber_encode_var(struct fb_var_screeninfo *var,
struct cyberfb_par *par);
static int Cyber_getcolreg(u_int regno, u_int *red, u_int *green, u_int *blue,
u_int *transp, struct fb_info *info);
/*
* Internal routines
*/
static void cyberfb_get_par(struct cyberfb_par *par);
static void cyberfb_set_par(struct cyberfb_par *par);
static int do_fb_set_var(struct fb_var_screeninfo *var, int isactive);
static void cyberfb_set_disp(int con, struct fb_info *info);
static int get_video_mode(const char *name);
/* For cvision_core.c */
static unsigned short cv64_compute_clock(unsigned long);
static int cv_has_4mb (volatile unsigned char *);
static void cv64_board_init (void);
static void cv64_load_video_mode (struct fb_var_screeninfo *);
/* -------------------- Hardware specific routines ------------------------- */
/*
* Initialization
*
* Set the default video mode for this chipset. If a video mode was
* specified on the command line, it will override the default mode.
*/
static int Cyber_init(void)
{
volatile unsigned char *regs = CyberRegs;
volatile unsigned long *CursorBase;
int i;
DPRINTK("ENTER\n");
/* Init local cmap as greyscale levels */
for (i = 0; i < 256; i++) {
Cyber_colour_table [i][0] = i;
Cyber_colour_table [i][1] = i;
Cyber_colour_table [i][2] = i;
}
/* Initialize the board and determine fbmem size */
cv64_board_init();
#ifdef CYBERFBDEBUG
DPRINTK("Register state after initing board\n");
cv64_dump();
#endif
/* Clear framebuffer memory */
DPRINTK("Clear framebuffer memory\n");
memset ((char *)CyberMem, 0, CyberSize);
/* Disable hardware cursor */
DPRINTK("Disable HW cursor\n");
wb_64(regs, S3_CRTC_ADR, S3_REG_LOCK2);
wb_64(regs, S3_CRTC_DATA, 0xa0);
wb_64(regs, S3_CRTC_ADR, S3_HGC_MODE);
wb_64(regs, S3_CRTC_DATA, 0x00);
wb_64(regs, S3_CRTC_ADR, S3_HWGC_DX);
wb_64(regs, S3_CRTC_DATA, 0x00);
wb_64(regs, S3_CRTC_ADR, S3_HWGC_DY);
wb_64(regs, S3_CRTC_DATA, 0x00);
/* Initialize hardware cursor */
DPRINTK("Init HW cursor\n");
CursorBase = (u_long *)((char *)(CyberMem) + CyberSize - 0x400);
for (i=0; i < 8; i++)
{
*(CursorBase +(i*4)) = 0xffffff00;
*(CursorBase+1+(i*4)) = 0xffff0000;
*(CursorBase+2+(i*4)) = 0xffff0000;
*(CursorBase+3+(i*4)) = 0xffff0000;
}
for (i=8; i < 64; i++)
{
*(CursorBase +(i*4)) = 0xffff0000;
*(CursorBase+1+(i*4)) = 0xffff0000;
*(CursorBase+2+(i*4)) = 0xffff0000;
*(CursorBase+3+(i*4)) = 0xffff0000;
}
cyberfb_setcolreg (255, 56<<8, 100<<8, 160<<8, 0, NULL /* unused */);
cyberfb_setcolreg (254, 0, 0, 0, 0, NULL /* unused */);
DPRINTK("EXIT\n");
return 0;
}
/*
* This function should fill in the `fix' structure based on the
* values in the `par' structure.
*/
static int Cyber_encode_fix(struct fb_fix_screeninfo *fix,
struct cyberfb_par *par)
{
DPRINTK("ENTER\n");
memset(fix, 0, sizeof(struct fb_fix_screeninfo));
strcpy(fix->id, cyberfb_name);
fix->smem_start = CyberMem_phys;
fix->smem_len = CyberSize;
fix->mmio_start = CyberRegs_phys;
fix->mmio_len = 0x10000;
fix->type = FB_TYPE_PACKED_PIXELS;
fix->type_aux = 0;
if (par->var.bits_per_pixel == 15 || par->var.bits_per_pixel == 16 ||
par->var.bits_per_pixel == 24 || par->var.bits_per_pixel == 32) {
fix->visual = FB_VISUAL_DIRECTCOLOR;
} else {
fix->visual = FB_VISUAL_PSEUDOCOLOR;
}
fix->xpanstep = 0;
fix->ypanstep = 0;
fix->ywrapstep = 0;
fix->line_length = 0;
fix->accel = FB_ACCEL_S3_TRIO64;
DPRINTK("EXIT\n");
return(0);
}
/*
* Fill the `par' structure based on the values in `var'.
* TODO: Verify and adjust values, return -EINVAL if bad.
*/
static int Cyber_decode_var(struct fb_var_screeninfo *var,
struct cyberfb_par *par)
{
DPRINTK("ENTER\n");
par->var.xres = var->xres;
par->var.yres = var->yres;
par->var.xres_virtual = var->xres_virtual;
par->var.yres_virtual = var->yres_virtual;
par->var.xoffset = var->xoffset;
par->var.yoffset = var->yoffset;
par->var.bits_per_pixel = var->bits_per_pixel;
par->var.grayscale = var->grayscale;
par->var.red = var->red;
par->var.green = var->green;
par->var.blue = var->blue;
par->var.transp = var->transp;
par->var.nonstd = var->nonstd;
par->var.activate = var->activate;
par->var.height = var->height;
par->var.width = var->width;
if (var->accel_flags & FB_ACCELF_TEXT) {
par->var.accel_flags = FB_ACCELF_TEXT;
} else {
par->var.accel_flags = 0;
}
par->var.pixclock = var->pixclock;
par->var.left_margin = var->left_margin;
par->var.right_margin = var->right_margin;
par->var.upper_margin = var->upper_margin;
par->var.lower_margin = var->lower_margin;
par->var.hsync_len = var->hsync_len;
par->var.vsync_len = var->vsync_len;
par->var.sync = var->sync;
par->var.vmode = var->vmode;
DPRINTK("EXIT\n");
return(0);
}
/*
* Fill the `var' structure based on the values in `par' and maybe
* other values read out of the hardware.
*/
static int Cyber_encode_var(struct fb_var_screeninfo *var,
struct cyberfb_par *par)
{
DPRINTK("ENTER\n");
var->xres = par->var.xres;
var->yres = par->var.yres;
var->xres_virtual = par->var.xres_virtual;
var->yres_virtual = par->var.yres_virtual;
var->xoffset = par->var.xoffset;
var->yoffset = par->var.yoffset;
var->bits_per_pixel = par->var.bits_per_pixel;
var->grayscale = par->var.grayscale;
var->red = par->var.red;
var->green = par->var.green;
var->blue = par->var.blue;
var->transp = par->var.transp;
var->nonstd = par->var.nonstd;
var->activate = par->var.activate;
var->height = par->var.height;
var->width = par->var.width;
var->accel_flags = par->var.accel_flags;
var->pixclock = par->var.pixclock;
var->left_margin = par->var.left_margin;
var->right_margin = par->var.right_margin;
var->upper_margin = par->var.upper_margin;
var->lower_margin = par->var.lower_margin;
var->hsync_len = par->var.hsync_len;
var->vsync_len = par->var.vsync_len;
var->sync = par->var.sync;
var->vmode = par->var.vmode;
DPRINTK("EXIT\n");
return(0);
}
/*
* Set a single color register. Return != 0 for invalid regno.
*/
static int cyberfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
u_int transp, struct fb_info *info)
{
volatile unsigned char *regs = CyberRegs;
/*DPRINTK("ENTER\n");*/
if (regno > 255) {
DPRINTK("EXIT - Register # > 255\n");
return (1);
}
wb_64(regs, 0x3c8, (unsigned char) regno);
red >>= 10;
green >>= 10;
blue >>= 10;
Cyber_colour_table [regno][0] = red;
Cyber_colour_table [regno][1] = green;
Cyber_colour_table [regno][2] = blue;
wb_64(regs, 0x3c9, red);
wb_64(regs, 0x3c9, green);
wb_64(regs, 0x3c9, blue);
/*DPRINTK("EXIT\n");*/
return (0);
}
/*
* Read a single color register and split it into
* colors/transparent. Return != 0 for invalid regno.
*/
static int Cyber_getcolreg(u_int regno, u_int *red, u_int *green, u_int *blue,
u_int *transp, struct fb_info *info)
{
int t;
/*DPRINTK("ENTER\n");*/
if (regno > 255) {
DPRINTK("EXIT - Register # > 255\n");
return (1);
}
/* ARB This shifting & oring seems VERY strange */
t = Cyber_colour_table [regno][0];
*red = (t<<10) | (t<<4) | (t>>2);
t = Cyber_colour_table [regno][1];
*green = (t<<10) | (t<<4) | (t>>2);
t = Cyber_colour_table [regno][2];
*blue = (t<<10) | (t<<4) | (t>>2);
*transp = 0;
/*DPRINTK("EXIT\n");*/
return (0);
}
/*
* (Un)Blank the screen
* blank: 1 = zero fb cmap
* 0 = restore fb cmap from local cmap
*/
static int cyberfb_blank(int blank, struct fb_info *info)
{
volatile unsigned char *regs = CyberRegs;
int i;
DPRINTK("ENTER\n");
#if 0
/* Blank by turning gfx off */
gfx_on_off (1, regs);
#else
if (blank) {
for (i = 0; i < 256; i++) {
wb_64(regs, 0x3c8, (unsigned char) i);
/* ARB Pale red to detect this blanking method */
wb_64(regs, 0x3c9, 48);
wb_64(regs, 0x3c9, 0);
wb_64(regs, 0x3c9, 0);
}
} else {
for (i = 0; i < 256; i++) {
wb_64(regs, 0x3c8, (unsigned char) i);
wb_64(regs, 0x3c9, Cyber_colour_table[i][0]);
wb_64(regs, 0x3c9, Cyber_colour_table[i][1]);
wb_64(regs, 0x3c9, Cyber_colour_table[i][2]);
}
}
#endif
DPRINTK("EXIT\n");
return 0;
}
/**************************************************************
* We are waiting for "fifo" FIFO-slots empty
*/
static void Cyber_WaitQueue (u_short fifo)
{
unsigned short status;
DPRINTK("ENTER\n");
do {
status = *((u_short volatile *)(CyberRegs + S3_GP_STAT));
} while (status & fifo);
DPRINTK("EXIT\n");
}
/**************************************************************
* We are waiting for Hardware (Graphics Engine) not busy
*/
static void Cyber_WaitBlit (void)
{
unsigned short status;
DPRINTK("ENTER\n");
do {
status = *((u_short volatile *)(CyberRegs + S3_GP_STAT));
} while (status & S3_HDW_BUSY);
DPRINTK("EXIT\n");
}
/**************************************************************
* BitBLT - Through the Plane
*/
static void Cyber_BitBLT (u_short curx, u_short cury, u_short destx,
u_short desty, u_short width, u_short height,
u_short mode)
{
volatile unsigned char *regs = CyberRegs;
u_short blitcmd = S3_BITBLT;
DPRINTK("ENTER\n");
/* Set drawing direction */
/* -Y, X maj, -X (default) */
if (curx > destx) {
blitcmd |= 0x0020; /* Drawing direction +X */
} else {
curx += (width - 1);
destx += (width - 1);
}
if (cury > desty) {
blitcmd |= 0x0080; /* Drawing direction +Y */
} else {
cury += (height - 1);
desty += (height - 1);
}
Cyber_WaitQueue (0x8000);
*((u_short volatile *)(regs + S3_PIXEL_CNTL)) = 0xa000;
*((u_short volatile *)(regs + S3_FRGD_MIX)) = (0x0060 | mode);
*((u_short volatile *)(regs + S3_CUR_X)) = curx;
*((u_short volatile *)(regs + S3_CUR_Y)) = cury;
*((u_short volatile *)(regs + S3_DESTX_DIASTP)) = destx;
*((u_short volatile *)(regs + S3_DESTY_AXSTP)) = desty;
*((u_short volatile *)(regs + S3_MIN_AXIS_PCNT)) = height - 1;
*((u_short volatile *)(regs + S3_MAJ_AXIS_PCNT)) = width - 1;
*((u_short volatile *)(regs + S3_CMD)) = blitcmd;
DPRINTK("EXIT\n");
}
/**************************************************************
* Rectangle Fill Solid
*/
static void Cyber_RectFill (u_short x, u_short y, u_short width,
u_short height, u_short mode, u_short color)
{
volatile unsigned char *regs = CyberRegs;
u_short blitcmd = S3_FILLEDRECT;
DPRINTK("ENTER\n");
Cyber_WaitQueue (0x8000);
*((u_short volatile *)(regs + S3_PIXEL_CNTL)) = 0xa000;
*((u_short volatile *)(regs + S3_FRGD_MIX)) = (0x0020 | mode);
*((u_short volatile *)(regs + S3_MULT_MISC)) = 0xe000;
*((u_short volatile *)(regs + S3_FRGD_COLOR)) = color;
*((u_short volatile *)(regs + S3_CUR_X)) = x;
*((u_short volatile *)(regs + S3_CUR_Y)) = y;
*((u_short volatile *)(regs + S3_MIN_AXIS_PCNT)) = height - 1;
*((u_short volatile *)(regs + S3_MAJ_AXIS_PCNT)) = width - 1;
*((u_short volatile *)(regs + S3_CMD)) = blitcmd;
DPRINTK("EXIT\n");
}
#if 0
/**************************************************************
* Move cursor to x, y
*/
static void Cyber_MoveCursor (u_short x, u_short y)
{
volatile unsigned char *regs = CyberRegs;
DPRINTK("ENTER\n");
*(regs + S3_CRTC_ADR) = 0x39;
*(regs + S3_CRTC_DATA) = 0xa0;
*(regs + S3_CRTC_ADR) = S3_HWGC_ORGX_H;
*(regs + S3_CRTC_DATA) = (char)((x & 0x0700) >> 8);
*(regs + S3_CRTC_ADR) = S3_HWGC_ORGX_L;
*(regs + S3_CRTC_DATA) = (char)(x & 0x00ff);
*(regs + S3_CRTC_ADR) = S3_HWGC_ORGY_H;
*(regs + S3_CRTC_DATA) = (char)((y & 0x0700) >> 8);
*(regs + S3_CRTC_ADR) = S3_HWGC_ORGY_L;
*(regs + S3_CRTC_DATA) = (char)(y & 0x00ff);
DPRINTK("EXIT\n");
}
#endif
/* -------------------- Generic routines ---------------------------------- */
/*
* Fill the hardware's `par' structure.
*/
static void cyberfb_get_par(struct cyberfb_par *par)
{
DPRINTK("ENTER\n");
if (current_par_valid) {
*par = current_par;
} else {
Cyber_decode_var(&cyberfb_default, par);
}
DPRINTK("EXIT\n");
}
static void cyberfb_set_par(struct cyberfb_par *par)
{
DPRINTK("ENTER\n");
current_par = *par;
current_par_valid = 1;
DPRINTK("EXIT\n");
}
static void cyber_set_video(struct fb_var_screeninfo *var)
{
/* Load the video mode defined by the 'var' data */
cv64_load_video_mode (var);
#ifdef CYBERFBDEBUG
DPRINTK("Register state after loading video mode\n");
cv64_dump();
#endif
}
static int do_fb_set_var(struct fb_var_screeninfo *var, int isactive)
{
int err, activate;
struct cyberfb_par par;
DPRINTK("ENTER\n");
if ((err = Cyber_decode_var(var, &par))) {
DPRINTK("EXIT - decode_var failed\n");
return(err);
}
activate = var->activate;
if ((var->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW && isactive)
cyberfb_set_par(&par);
Cyber_encode_var(var, &par);
var->activate = activate;
cyber_set_video(var);
DPRINTK("EXIT\n");
return 0;
}
/*
* Get the Fixed Part of the Display
*/
static int cyberfb_get_fix(struct fb_fix_screeninfo *fix, int con,
struct fb_info *info)
{
struct cyberfb_par par;
int error = 0;
DPRINTK("ENTER\n");
if (con == -1) {
cyberfb_get_par(&par);
} else {
error = Cyber_decode_var(&fb_display[con].var, &par);
}
DPRINTK("EXIT\n");
return(error ? error : Cyber_encode_fix(fix, &par));
}
/*
* Get the User Defined Part of the Display
*/
static int cyberfb_get_var(struct fb_var_screeninfo *var, int con,
struct fb_info *info)
{
struct cyberfb_par par;
int error = 0;
DPRINTK("ENTER\n");
if (con == -1) {
cyberfb_get_par(&par);
error = Cyber_encode_var(var, &par);
disp.var = *var; /* ++Andre: don't know if this is the right place */
} else {
*var = fb_display[con].var;
}
DPRINTK("EXIT\n");
return(error);
}
static void cyberfb_set_disp(int con, struct fb_info *info)
{
struct fb_fix_screeninfo fix;
struct display *display;
DPRINTK("ENTER\n");
if (con >= 0)
display = &fb_display[con];
else
display = &disp; /* used during initialization */
cyberfb_get_fix(&fix, con, info);
if (con == -1)
con = 0;
display->visual = fix.visual;
display->type = fix.type;
display->type_aux = fix.type_aux;
display->ypanstep = fix.ypanstep;
display->ywrapstep = fix.ywrapstep;
display->can_soft_blank = 1;
display->inverse = Cyberfb_inverse;
switch (display->var.bits_per_pixel) {
#ifdef FBCON_HAS_CFB8
case 8:
if (display->var.accel_flags & FB_ACCELF_TEXT) {
display->dispsw = &fbcon_cyber8;
#warning FIXME: We should reinit the graphics engine here
} else
display->dispsw = &fbcon_cfb8;
break;
#endif
#ifdef FBCON_HAS_CFB16
case 16:
display->dispsw = &fbcon_cfb16;
break;
#endif
default:
display->dispsw = NULL;
break;
}
DPRINTK("EXIT\n");
}
/*
* Set the User Defined Part of the Display
*/
static int cyberfb_set_var(struct fb_var_screeninfo *var, int con,
struct fb_info *info)
{
int err, oldxres, oldyres, oldvxres, oldvyres, oldbpp, oldaccel;
DPRINTK("ENTER\n");
if ((err = do_fb_set_var(var, con == info->currcon))) {
DPRINTK("EXIT - do_fb_set_var failed\n");
return(err);
}
if ((var->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW) {
oldxres = fb_display[con].var.xres;
oldyres = fb_display[con].var.yres;
oldvxres = fb_display[con].var.xres_virtual;
oldvyres = fb_display[con].var.yres_virtual;
oldbpp = fb_display[con].var.bits_per_pixel;
oldaccel = fb_display[con].var.accel_flags;
fb_display[con].var = *var;
if (oldxres != var->xres || oldyres != var->yres ||
oldvxres != var->xres_virtual ||
oldvyres != var->yres_virtual ||
oldbpp != var->bits_per_pixel ||
oldaccel != var->accel_flags) {
cyberfb_set_disp(con, info);
(*fb_info.changevar)(con);
fb_alloc_cmap(&fb_display[con].cmap, 0, 0);
do_install_cmap(con, info);
}
}
var->activate = 0;
DPRINTK("EXIT\n");
return(0);
}
/*
* Get the Colormap
*/
static int cyberfb_get_cmap(struct fb_cmap *cmap, int kspc, int con,
struct fb_info *info)
{
DPRINTK("ENTER\n");
if (con == info->currcon) { /* current console? */
DPRINTK("EXIT - console is current console\n");
return(fb_get_cmap(cmap, kspc, Cyber_getcolreg, info));
} else if (fb_display[con].cmap.len) { /* non default colormap? */
DPRINTK("Use console cmap\n");
fb_copy_cmap(&fb_display[con].cmap, cmap, kspc ? 0 : 2);
} else {
DPRINTK("Use default cmap\n");
fb_copy_cmap(fb_default_cmap(1<<fb_display[con].var.bits_per_pixel),
cmap, kspc ? 0 : 2);
}
DPRINTK("EXIT\n");
return(0);
}
static struct fb_ops cyberfb_ops = {
.owner = THIS_MODULE,
.fb_get_fix = cyberfb_get_fix,
.fb_get_var = cyberfb_get_var,
.fb_set_var = cyberfb_set_var,
.fb_get_cmap = cyberfb_get_cmap,
.fb_set_cmap = gen_set_cmap,
.fb_setcolreg = cyberfb_setcolreg,
.fb_blank = cyberfb_blank,
};
int __init cyberfb_setup(char *options)
{
char *this_opt;
DPRINTK("ENTER\n");
fb_info.fontname[0] = '\0';
if (!options || !*options) {
DPRINTK("EXIT - no options\n");
return 0;
}
while ((this_opt = strsep(&options, ",")) != NULL) {
if (!*this_opt)
continue;
if (!strcmp(this_opt, "inverse")) {
Cyberfb_inverse = 1;
fb_invert_cmaps();
} else if (!strncmp(this_opt, "font:", 5)) {
strcpy(fb_info.fontname, this_opt+5);
} else if (!strcmp (this_opt, "cyber8")) {
cyberfb_default = cyberfb_predefined[CYBER8_DEFMODE].var;
cyberfb_usermode = 1;
} else if (!strcmp (this_opt, "cyber16")) {
cyberfb_default = cyberfb_predefined[CYBER16_DEFMODE].var;
cyberfb_usermode = 1;
} else get_video_mode(this_opt);
}
DPRINTK("default mode: xres=%d, yres=%d, bpp=%d\n",
cyberfb_default.xres,
cyberfb_default.yres,
cyberfb_default.bits_per_pixel);
DPRINTK("EXIT\n");
return 0;
}
/*
* Initialization
*/