patch-2.1.73 linux/arch/m68k/amiga/cyberfb.c
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- Lines: 1254
- Date:
Wed Dec 31 16:00:00 1969
- Orig file:
v2.1.72/linux/arch/m68k/amiga/cyberfb.c
- Orig date:
Mon Jul 7 08:18:53 1997
diff -u --recursive --new-file v2.1.72/linux/arch/m68k/amiga/cyberfb.c linux/arch/m68k/amiga/cyberfb.c
@@ -1,1253 +0,0 @@
-/*
- * linux/arch/m68k/amiga/cyberfb.c -- Low level implementation of the
- * Cybervision frame buffer device
- *
- * Copyright (C) 1996 Martin Apel
- * Geert Uytterhoeven
- *
- *
- * This file 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
- *
- *
- * 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/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/mm.h>
-#include <linux/tty.h>
-#include <linux/malloc.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 "s3blit.h"
-
-
-#define arraysize(x) (sizeof(x)/sizeof(*(x)))
-
-struct Cyber_fb_par {
- int xres;
- int yres;
- int bpp;
-};
-
-static struct Cyber_fb_par current_par;
-
-static int current_par_valid = 0;
-static int currcon = 0;
-
-static struct display disp[MAX_NR_CONSOLES];
-static struct fb_info fb_info;
-
-static int node; /* node of the /dev/fb?current file */
-
-
- /*
- * Switch for Chipset Independency
- */
-
-static struct fb_hwswitch {
-
- /* Initialisation */
-
- int (*init)(void);
-
- /* Display Control */
-
- int (*encode_fix)(struct fb_fix_screeninfo *fix, struct Cyber_fb_par *par);
- int (*decode_var)(struct fb_var_screeninfo *var, struct Cyber_fb_par *par);
- int (*encode_var)(struct fb_var_screeninfo *var, struct Cyber_fb_par *par);
- int (*getcolreg)(u_int regno, u_int *red, u_int *green, u_int *blue,
- u_int *transp);
- int (*setcolreg)(u_int regno, u_int red, u_int green, u_int blue,
- u_int transp);
- void (*blank)(int blank);
-} *fbhw;
-
-
- /*
- * Frame Buffer Name
- */
-
-static char Cyber_fb_name[16] = "Cybervision";
-
-
- /*
- * Cybervision Graphics Board
- */
-
-#define CYBER8_WIDTH 1152
-#define CYBER8_HEIGHT 886
-#define CYBER8_PIXCLOCK 12500 /* ++Geert: Just a guess */
-
-#define CYBER16_WIDTH 800
-#define CYBER16_HEIGHT 600
-#define CYBER16_PIXCLOCK 25000 /* ++Geert: Just a guess */
-
-
-static int CyberKey = 0;
-static u_char Cyber_colour_table [256][4];
-static unsigned long CyberMem;
-static unsigned long CyberSize;
-static volatile char *CyberRegs;
-
-static long *memstart;
-
-
- /*
- * Predefined Video Mode Names
- */
-
-static char *Cyber_fb_modenames[] = {
-
- /*
- * Autodetect (Default) Video Mode
- */
-
- "default",
-
- /*
- * Predefined Video Modes
- */
-
- "cyber8", /* Cybervision 8 bpp */
- "cyber16", /* Cybervision 16 bpp */
-
- /*
- * Dummy Video Modes
- */
-
- "dummy", "dummy", "dummy", "dummy", "dummy", "dummy", "dummy", "dummy",
- "dummy", "dummy", "dummy", "dummy", "dummy", "dummy", "dummy", "dummy",
- "dummy", "dummy", "dummy", "dummy",
-
- /*
- * User Defined Video Modes
- *
- * This doesn't work yet!!
- */
-
- "user0", "user1", "user2", "user3", "user4", "user5", "user6", "user7"
-};
-
-
- /*
- * Predefined Video Mode Definitions
- */
-
-static struct fb_var_screeninfo Cyber_fb_predefined[] = {
-
- /*
- * Autodetect (Default) Video Mode
- */
-
- { 0, },
-
- /*
- * Predefined Video Modes
- */
-
- {
- /* Cybervision 8 bpp */
- CYBER8_WIDTH, CYBER8_HEIGHT, CYBER8_WIDTH, CYBER8_HEIGHT, 0, 0, 8, 0,
- {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
- 0, 0, -1, -1, FB_ACCEL_NONE, CYBER8_PIXCLOCK, 64, 96, 35, 12, 112, 2,
- FB_SYNC_COMP_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
- }, {
- /* Cybervision 16 bpp */
- CYBER16_WIDTH, CYBER16_HEIGHT, CYBER16_WIDTH, CYBER16_HEIGHT, 0, 0, 16, 0,
- {11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0},
- 0, 0, -1, -1, FB_ACCEL_NONE, CYBER16_PIXCLOCK, 64, 96, 35, 12, 112, 2,
- FB_SYNC_COMP_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
- },
-
- /*
- * Dummy Video Modes
- */
-
- { 0, }, { 0, }, { 0, }, { 0, }, { 0, }, { 0, }, { 0, }, { 0, }, { 0, },
- { 0, }, { 0, }, { 0, }, { 0, }, { 0, }, { 0, }, { 0, }, { 0, }, { 0, },
- { 0, }, { 0, },
-
- /*
- * User Defined Video Modes
- */
-
- { 0, }, { 0, }, { 0, }, { 0, }, { 0, }, { 0, }, { 0, }, { 0, }
-};
-
-
-#define NUM_TOTAL_MODES arraysize(Cyber_fb_predefined)
-#define NUM_PREDEF_MODES (3)
-
-
-static int Cyberfb_inverse = 0;
-static int Cyberfb_Cyber8 = 0; /* Use Cybervision board */
-static int Cyberfb_Cyber16 = 0; /* Use Cybervision board */
-static int Cyberfb_mode = 0;
-
-
- /*
- * Some default modes
- */
-
-#define CYBER8_DEFMODE (1)
-#define CYBER16_DEFMODE (2)
-
-
- /*
- * Interface used by the world
- */
-
-int Cyber_probe(void);
-void Cyber_video_setup(char *options, int *ints);
-
-static int Cyber_fb_get_fix(struct fb_fix_screeninfo *fix, int con);
-static int Cyber_fb_get_var(struct fb_var_screeninfo *var, int con);
-static int Cyber_fb_set_var(struct fb_var_screeninfo *var, int con);
-static int Cyber_fb_get_cmap(struct fb_cmap *cmap, int kspc, int con);
-static int Cyber_fb_set_cmap(struct fb_cmap *cmap, int kspc, int con);
-static int Cyber_fb_pan_display(struct fb_var_screeninfo *var, int con);
-static int Cyber_fb_ioctl(struct inode *inode, struct file *file, u_int cmd,
- u_long arg, int con);
-
-
- /*
- * Interface to the low level console driver
- */
-
-struct fb_info *Cyber_fb_init(long *mem_start); /* Through amiga_fb_init() */
-static int Cyberfb_switch(int con);
-static int Cyberfb_updatevar(int con);
-static void Cyberfb_blank(int blank);
-static int Cyberfb_setcmap(struct fb_cmap *cmap, int con);
-
-
- /*
- * Accelerated Functions used by the low level console driver
- */
-
-void Cyber_WaitQueue(u_short fifo);
-void Cyber_WaitBlit(void);
-void Cyber_BitBLT(u_short curx, u_short cury, u_short destx, u_short desty,
- u_short width, u_short height, u_short mode);
-void Cyber_RectFill(u_short x, u_short y, u_short width, u_short height,
- u_short mode, u_short color);
-void Cyber_MoveCursor(u_short x, u_short y);
-
-
- /*
- * Hardware Specific Routines
- */
-
-static int Cyber_init(void);
-static int Cyber_encode_fix(struct fb_fix_screeninfo *fix,
- struct Cyber_fb_par *par);
-static int Cyber_decode_var(struct fb_var_screeninfo *var,
- struct Cyber_fb_par *par);
-static int Cyber_encode_var(struct fb_var_screeninfo *var,
- struct Cyber_fb_par *par);
-static int Cyber_getcolreg(u_int regno, u_int *red, u_int *green, u_int *blue,
- u_int *transp);
-static int Cyber_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
- u_int transp);
-static void Cyber_blank(int blank);
-
-
- /*
- * Internal routines
- */
-
-static void Cyber_fb_get_par(struct Cyber_fb_par *par);
-static void Cyber_fb_set_par(struct Cyber_fb_par *par);
-static int do_fb_set_var(struct fb_var_screeninfo *var, int isactive);
-static struct fb_cmap *get_default_colormap(int bpp);
-static int do_fb_get_cmap(struct fb_cmap *cmap, struct fb_var_screeninfo *var,
- int kspc);
-static int do_fb_set_cmap(struct fb_cmap *cmap, struct fb_var_screeninfo *var,
- int kspc);
-static void do_install_cmap(int con);
-static void memcpy_fs(int fsfromto, void *to, void *from, int len);
-static void copy_cmap(struct fb_cmap *from, struct fb_cmap *to, int fsfromto);
-static int alloc_cmap(struct fb_cmap *cmap, int len, int transp);
-static void Cyber_fb_set_disp(int con);
-static int get_video_mode(const char *name);
-
-
-/* -------------------- 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)
-{
-int i;
-char size;
-volatile u_long *CursorBase;
-unsigned long board_addr;
-struct ConfigDev *cd;
-
-if (Cyberfb_mode == -1)
- {
- if (Cyberfb_Cyber8)
- Cyberfb_mode = CYBER8_DEFMODE;
- else
- Cyberfb_mode = CYBER16_DEFMODE;
- }
-
-cd = zorro_get_board (CyberKey);
-zorro_config_board (CyberKey, 0);
-board_addr = (unsigned long)cd->cd_BoardAddr;
-
-for (i = 0; i < 256; i++)
-
-for (i = 0; i < 256; i++)
- {
- Cyber_colour_table [i][0] = i;
- Cyber_colour_table [i][1] = i;
- Cyber_colour_table [i][2] = i;
- Cyber_colour_table [i][3] = 0;
- }
-
-*memstart = (*memstart + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1);
-/* This includes the video memory as well as the S3 register set */
-CyberMem = kernel_map (board_addr + 0x01400000, 0x01000000,
- KERNELMAP_NOCACHE_SER, memstart);
-
-if (Cyberfb_Cyber8)
- memset ((char*)CyberMem, 0, CYBER8_WIDTH * CYBER8_HEIGHT);
-else
- memset ((char*)CyberMem, 0, CYBER16_WIDTH * CYBER16_HEIGHT);
-
-CyberRegs = (char*) (CyberMem + 0x00c00000);
-
-/* Disable hardware cursor */
-*(CyberRegs + S3_CRTC_ADR) = S3_REG_LOCK2;
-*(CyberRegs + S3_CRTC_DATA) = 0xa0;
-*(CyberRegs + S3_CRTC_ADR) = S3_HGC_MODE;
-*(CyberRegs + S3_CRTC_DATA) = 0x00;
-*(CyberRegs + S3_CRTC_ADR) = S3_HWGC_DX;
-*(CyberRegs + S3_CRTC_DATA) = 0x00;
-*(CyberRegs + S3_CRTC_ADR) = S3_HWGC_DY;
-*(CyberRegs + S3_CRTC_DATA) = 0x00;
-
-/* Set clipping rectangle to current screen size */
-*((u_short volatile *)(CyberRegs + 0xbee8)) = 0x1000;
-*((u_short volatile *)(CyberRegs + 0xbee8)) = 0x2000;
-if (Cyberfb_Cyber8)
- {
- *((u_short volatile *)(CyberRegs + 0xbee8)) = 0x3000 | (CYBER8_HEIGHT - 1);
- *((u_short volatile *)(CyberRegs + 0xbee8)) = 0x4000 | (CYBER8_WIDTH - 1);
- }
-else
- {
- *((u_short volatile *)(CyberRegs + 0xbee8)) = 0x3000 | (CYBER16_HEIGHT - 1);
- *((u_short volatile *)(CyberRegs + 0xbee8)) = 0x4000 | (CYBER16_WIDTH - 1);
- }
-
-/* Get memory size (if not 2MB it is 4MB) */
-*(CyberRegs + S3_CRTC_ADR) = S3_LAW_CTL;
-size = *(CyberRegs + S3_CRTC_DATA);
-if ((size & 0x03) == 0x02)
- CyberSize = 0x00200000; /* 2 MB */
-else
- CyberSize = 0x00400000; /* 4 MB */
-
-/* Initialize hardware cursor */
-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;
- }
-
-Cyber_setcolreg (255, 56, 100, 160, 0);
-Cyber_setcolreg (254, 0, 0, 0, 0);
-
-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 Cyber_fb_par *par)
-{
- int i;
-
- strcpy(fix->id, Cyber_fb_name);
- fix->smem_start = CyberMem;
-#if 0
- fix->smem_len = CyberSize;
-#else
- fix->smem_len = 0x01000000;
-#endif
-
- fix->type = FB_TYPE_PACKED_PIXELS;
- fix->type_aux = 0;
- if (par->bpp == 8)
- fix->visual = FB_VISUAL_PSEUDOCOLOR;
- else
- fix->visual = FB_VISUAL_DIRECTCOLOR;
-
- fix->xpanstep = 0;
- fix->ypanstep = 0;
- fix->ywrapstep = 0;
- fix->line_length = 0;
-
- for (i = 0; i < arraysize(fix->reserved); i++)
- fix->reserved[i] = 0;
-
- return(0);
-}
-
-
- /*
- * Get the video params out of `var'. If a value doesn't fit, round
- * it up, if it's too big, return -EINVAL.
- */
-
-static int Cyber_decode_var(struct fb_var_screeninfo *var,
- struct Cyber_fb_par *par)
-{
- if (Cyberfb_Cyber8) {
- par->xres = CYBER8_WIDTH;
- par->yres = CYBER8_HEIGHT;
- par->bpp = 8;
- } else {
- par->xres = CYBER16_WIDTH;
- par->yres = CYBER16_HEIGHT;
- par->bpp = 16;
- }
- 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 Cyber_fb_par *par)
-{
- int i;
-
- var->xres = par->xres;
- var->yres = par->yres;
- var->xres_virtual = par->xres;
- var->yres_virtual = par->yres;
- var->xoffset = 0;
- var->yoffset = 0;
-
- var->bits_per_pixel = par->bpp;
- var->grayscale = 0;
-
- if (par->bpp == 8) {
- var->red.offset = 0;
- var->red.length = 8;
- var->red.msb_right = 0;
- var->blue = var->green = var->red;
- } else {
- var->red.offset = 11;
- var->red.length = 5;
- var->red.msb_right = 0;
- var->green.offset = 5;
- var->green.length = 6;
- var->green.msb_right = 0;
- var->blue.offset = 0;
- var->blue.length = 5;
- var->blue.msb_right = 0;
- }
- var->transp.offset = 0;
- var->transp.length = 0;
- var->transp.msb_right = 0;
-
- var->nonstd = 0;
- var->activate = 0;
-
- var->height = -1;
- var->width = -1;
- var->accel = FB_ACCEL_CYBERVISION;
- var->vmode = FB_VMODE_NONINTERLACED;
-
- /* Dummy values */
-
- if (par->bpp == 8)
- var->pixclock = CYBER8_PIXCLOCK;
- else
- var->pixclock = CYBER16_PIXCLOCK;
- var->sync = 0;
- var->left_margin = 64;
- var->right_margin = 96;
- var->upper_margin = 35;
- var->lower_margin = 12;
- var->hsync_len = 112;
- var->vsync_len = 2;
-
- for (i = 0; i < arraysize(var->reserved); i++)
- var->reserved[i] = 0;
-
- return(0);
-}
-
-
- /*
- * Set a single color register. The values supplied are already
- * rounded down to the hardware's capabilities (according to the
- * entries in the var structure). Return != 0 for invalid regno.
- */
-
-static int Cyber_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
- u_int transp)
-{
-if (regno > 255)
- return (1);
-
-*(CyberRegs + 0x3c8) = (char)regno;
-Cyber_colour_table [regno][0] = red & 0xff;
-Cyber_colour_table [regno][1] = green & 0xff;
-Cyber_colour_table [regno][2] = blue & 0xff;
-Cyber_colour_table [regno][3] = transp;
-
-*(CyberRegs + 0x3c9) = (red & 0xff) >> 2;
-*(CyberRegs + 0x3c9) = (green & 0xff) >> 2;
-*(CyberRegs + 0x3c9) = (blue & 0xff) >> 2;
-
-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)
-{
-if (regno >= 256)
- return (1);
-*red = Cyber_colour_table [regno][0];
-*green = Cyber_colour_table [regno][1];
-*blue = Cyber_colour_table [regno][2];
-*transp = Cyber_colour_table [regno][3];
-return (0);
-}
-
-
- /*
- * (Un)Blank the screen
- */
-
-void Cyber_blank(int blank)
-{
-int i;
-
-if (blank)
- for (i = 0; i < 256; i++)
- {
- *(CyberRegs + 0x3c8) = i;
- *(CyberRegs + 0x3c9) = 0;
- *(CyberRegs + 0x3c9) = 0;
- *(CyberRegs + 0x3c9) = 0;
- }
-else
- for (i = 0; i < 256; i++)
- {
- *(CyberRegs + 0x3c8) = i;
- *(CyberRegs + 0x3c9) = Cyber_colour_table [i][0] >> 2;
- *(CyberRegs + 0x3c9) = Cyber_colour_table [i][1] >> 2;
- *(CyberRegs + 0x3c9) = Cyber_colour_table [i][2] >> 2;
- }
-}
-
-
-/**************************************************************
- * We are waiting for "fifo" FIFO-slots empty
- */
-void Cyber_WaitQueue (u_short fifo)
-{
-u_short status;
-
-do
- {
- status = *((u_short volatile *)(CyberRegs + S3_GP_STAT));
- }
-while (status & fifo);
-}
-
-/**************************************************************
- * We are waiting for Hardware (Graphics Engine) not busy
- */
-void Cyber_WaitBlit (void)
-{
-u_short status;
-
-do
- {
- status = *((u_short volatile *)(CyberRegs + S3_GP_STAT));
- }
-while (status & S3_HDW_BUSY);
-}
-
-/**************************************************************
- * BitBLT - Through the Plane
- */
-void Cyber_BitBLT (u_short curx, u_short cury, u_short destx, u_short desty,
- u_short width, u_short height, u_short mode)
-{
-u_short blitcmd = S3_BITBLT;
-
-/* 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 *)(CyberRegs + S3_PIXEL_CNTL)) = 0xa000;
-*((u_short volatile *)(CyberRegs + S3_FRGD_MIX)) = (0x0060 | mode);
-
-*((u_short volatile *)(CyberRegs + S3_CUR_X)) = curx;
-*((u_short volatile *)(CyberRegs + S3_CUR_Y)) = cury;
-
-*((u_short volatile *)(CyberRegs + S3_DESTX_DIASTP)) = destx;
-*((u_short volatile *)(CyberRegs + S3_DESTY_AXSTP)) = desty;
-
-*((u_short volatile *)(CyberRegs + S3_MIN_AXIS_PCNT)) = height - 1;
-*((u_short volatile *)(CyberRegs + S3_MAJ_AXIS_PCNT)) = width - 1;
-
-*((u_short volatile *)(CyberRegs + S3_CMD)) = blitcmd;
-}
-
-/**************************************************************
- * Rectangle Fill Solid
- */
-void Cyber_RectFill (u_short x, u_short y, u_short width, u_short height,
- u_short mode, u_short fcolor)
-{
-u_short blitcmd = S3_FILLEDRECT;
-
-Cyber_WaitQueue (0x8000);
-
-*((u_short volatile *)(CyberRegs + S3_PIXEL_CNTL)) = 0xa000;
-*((u_short volatile *)(CyberRegs + S3_FRGD_MIX)) = (0x0020 | mode);
-
-*((u_short volatile *)(CyberRegs + S3_MULT_MISC)) = 0xe000;
-*((u_short volatile *)(CyberRegs + S3_FRGD_COLOR)) = color;
-
-*((u_short volatile *)(CyberRegs + S3_CUR_X)) = x;
-*((u_short volatile *)(CyberRegs + S3_CUR_Y)) = y;
-
-*((u_short volatile *)(CyberRegs + S3_MIN_AXIS_PCNT)) = height - 1;
-*((u_short volatile *)(CyberRegs + S3_MAJ_AXIS_PCNT)) = width - 1;
-
-*((u_short volatile *)(CyberRegs + S3_CMD)) = blitcmd;
-}
-
-
-/**************************************************************
- * Move cursor to x, y
- */
-void Cyber_MoveCursor (u_short x, u_short y)
-{
-*(CyberRegs + S3_CRTC_ADR) = 0x39;
-*(CyberRegs + S3_CRTC_DATA) = 0xa0;
-
-*(CyberRegs + S3_CRTC_ADR) = S3_HWGC_ORGX_H;
-*(CyberRegs + S3_CRTC_DATA) = (char)((x & 0x0700) >> 8);
-*(CyberRegs + S3_CRTC_ADR) = S3_HWGC_ORGX_L;
-*(CyberRegs + S3_CRTC_DATA) = (char)(x & 0x00ff);
-
-*(CyberRegs + S3_CRTC_ADR) = S3_HWGC_ORGY_H;
-*(CyberRegs + S3_CRTC_DATA) = (char)((y & 0x0700) >> 8);
-*(CyberRegs + S3_CRTC_ADR) = S3_HWGC_ORGY_L;
-*(CyberRegs + S3_CRTC_DATA) = (char)(y & 0x00ff);
-}
-
-
-/* -------------------- Interfaces to hardware functions -------------------- */
-
-
-static struct fb_hwswitch Cyber_switch = {
- Cyber_init, Cyber_encode_fix, Cyber_decode_var, Cyber_encode_var,
- Cyber_getcolreg, Cyber_setcolreg, Cyber_blank
-};
-
-
-/* -------------------- Generic routines ------------------------------------ */
-
-
- /*
- * Fill the hardware's `par' structure.
- */
-
-static void Cyber_fb_get_par(struct Cyber_fb_par *par)
-{
- if (current_par_valid)
- *par = current_par;
- else
- fbhw->decode_var(&Cyber_fb_predefined[Cyberfb_mode], par);
-}
-
-
-static void Cyber_fb_set_par(struct Cyber_fb_par *par)
-{
- current_par = *par;
- current_par_valid = 1;
-}
-
-
-static int do_fb_set_var(struct fb_var_screeninfo *var, int isactive)
-{
- int err, activate;
- struct Cyber_fb_par par;
-
- if ((err = fbhw->decode_var(var, &par)))
- return(err);
- activate = var->activate;
- if ((var->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW && isactive)
- Cyber_fb_set_par(&par);
- fbhw->encode_var(var, &par);
- var->activate = activate;
- return(0);
-}
-
-
- /*
- * Default Colormaps
- */
-
-static u_short red16[] =
- { 0xc000, 0x0000, 0x0000, 0x0000, 0xc000, 0xc000, 0xc000, 0x0000,
- 0x8000, 0x0000, 0x0000, 0x0000, 0xffff, 0xffff, 0xffff, 0xffff};
-static u_short green16[] =
- { 0xc000, 0x0000, 0xc000, 0xc000, 0x0000, 0x0000, 0xc000, 0x0000,
- 0x8000, 0x0000, 0xffff, 0xffff, 0x0000, 0x0000, 0xffff, 0xffff};
-static u_short blue16[] =
- { 0xc000, 0x0000, 0x0000, 0xc000, 0x0000, 0xc000, 0x0000, 0x0000,
- 0x8000, 0xffff, 0x0000, 0xffff, 0x0000, 0xffff, 0x0000, 0xffff};
-
-
-static struct fb_cmap default_16_colors =
- { 0, 16, red16, green16, blue16, NULL };
-
-
-static struct fb_cmap *get_default_colormap(int bpp)
-{
- return(&default_16_colors);
-}
-
-
-#define CNVT_TOHW(val,width) ((((val)<<(width))+0x7fff-(val))>>16)
-#define CNVT_FROMHW(val,width) (((width) ? ((((val)<<16)-(val)) / \
- ((1<<(width))-1)) : 0))
-
-static int do_fb_get_cmap(struct fb_cmap *cmap, struct fb_var_screeninfo *var,
- int kspc)
-{
- int i, start;
- u_short *red, *green, *blue, *transp;
- u_int hred, hgreen, hblue, htransp;
-
- red = cmap->red;
- green = cmap->green;
- blue = cmap->blue;
- transp = cmap->transp;
- start = cmap->start;
- if (start < 0)
- return(-EINVAL);
- for (i = 0; i < cmap->len; i++) {
- if (fbhw->getcolreg(start++, &hred, &hgreen, &hblue, &htransp))
- return(0);
- hred = CNVT_FROMHW(hred, var->red.length);
- hgreen = CNVT_FROMHW(hgreen, var->green.length);
- hblue = CNVT_FROMHW(hblue, var->blue.length);
- htransp = CNVT_FROMHW(htransp, var->transp.length);
- if (kspc) {
- *red = hred;
- *green = hgreen;
- *blue = hblue;
- if (transp)
- *transp = htransp;
- } else {
- put_user(hred, red);
- put_user(hgreen, green);
- put_user(hblue, blue);
- if (transp)
- put_user(htransp, transp);
- }
- red++;
- green++;
- blue++;
- if (transp)
- transp++;
- }
- return(0);
-}
-
-
-static int do_fb_set_cmap(struct fb_cmap *cmap, struct fb_var_screeninfo *var,
- int kspc)
-{
- int i, start;
- u_short *red, *green, *blue, *transp;
- u_int hred, hgreen, hblue, htransp;
-
- red = cmap->red;
- green = cmap->green;
- blue = cmap->blue;
- transp = cmap->transp;
- start = cmap->start;
-
- if (start < 0)
- return(-EINVAL);
- for (i = 0; i < cmap->len; i++) {
- if (kspc) {
- hred = *red;
- hgreen = *green;
- hblue = *blue;
- htransp = transp ? *transp : 0;
- } else {
- get_user(hred, red);
- get_user(hgreen, green);
- get_user(hblue, blue);
- if (transp)
- get_user(htransp, transp);
- else
- htransp = 0;
- }
- hred = CNVT_TOHW(hred, var->red.length);
- hgreen = CNVT_TOHW(hgreen, var->green.length);
- hblue = CNVT_TOHW(hblue, var->blue.length);
- htransp = CNVT_TOHW(htransp, var->transp.length);
- red++;
- green++;
- blue++;
- if (transp)
- transp++;
- if (fbhw->setcolreg(start++, hred, hgreen, hblue, htransp))
- return(0);
- }
- return(0);
-}
-
-
-static void do_install_cmap(int con)
-{
- if (con != currcon)
- return;
- if (disp[con].cmap.len)
- do_fb_set_cmap(&disp[con].cmap, &disp[con].var, 1);
- else
- do_fb_set_cmap(get_default_colormap(disp[con].var.bits_per_pixel),
- &disp[con].var, 1);
-}
-
-
-static void memcpy_fs(int fsfromto, void *to, void *from, int len)
-{
- switch (fsfromto) {
- case 0:
- memcpy(to, from, len);
- return;
- case 1:
- copy_from_user(to, from, len);
- return;
- case 2:
- copy_to_user(to, from, len);
- return;
- }
-}
-
-
-static void copy_cmap(struct fb_cmap *from, struct fb_cmap *to, int fsfromto)
-{
- int size;
- int tooff = 0, fromoff = 0;
-
- if (to->start > from->start)
- fromoff = to->start-from->start;
- else
- tooff = from->start-to->start;
- size = to->len-tooff;
- if (size > from->len-fromoff)
- size = from->len-fromoff;
- if (size < 0)
- return;
- size *= sizeof(u_short);
- memcpy_fs(fsfromto, to->red+tooff, from->red+fromoff, size);
- memcpy_fs(fsfromto, to->green+tooff, from->green+fromoff, size);
- memcpy_fs(fsfromto, to->blue+tooff, from->blue+fromoff, size);
- if (from->transp && to->transp)
- memcpy_fs(fsfromto, to->transp+tooff, from->transp+fromoff, size);
-}
-
-
-static int alloc_cmap(struct fb_cmap *cmap, int len, int transp)
-{
- int size = len*sizeof(u_short);
-
- if (cmap->len != len) {
- if (cmap->red)
- kfree(cmap->red);
- if (cmap->green)
- kfree(cmap->green);
- if (cmap->blue)
- kfree(cmap->blue);
- if (cmap->transp)
- kfree(cmap->transp);
- cmap->red = cmap->green = cmap->blue = cmap->transp = NULL;
- cmap->len = 0;
- if (!len)
- return(0);
- if (!(cmap->red = kmalloc(size, GFP_ATOMIC)))
- return(-1);
- if (!(cmap->green = kmalloc(size, GFP_ATOMIC)))
- return(-1);
- if (!(cmap->blue = kmalloc(size, GFP_ATOMIC)))
- return(-1);
- if (transp) {
- if (!(cmap->transp = kmalloc(size, GFP_ATOMIC)))
- return(-1);
- } else
- cmap->transp = NULL;
- }
- cmap->start = 0;
- cmap->len = len;
- copy_cmap(get_default_colormap(len), cmap, 0);
- return(0);
-}
-
-
- /*
- * Get the Fixed Part of the Display
- */
-
-static int Cyber_fb_get_fix(struct fb_fix_screeninfo *fix, int con)
-{
- struct Cyber_fb_par par;
- int error = 0;
-
- if (con == -1)
- Cyber_fb_get_par(&par);
- else
- error = fbhw->decode_var(&disp[con].var, &par);
- return(error ? error : fbhw->encode_fix(fix, &par));
-}
-
-
- /*
- * Get the User Defined Part of the Display
- */
-
-static int Cyber_fb_get_var(struct fb_var_screeninfo *var, int con)
-{
- struct Cyber_fb_par par;
- int error = 0;
-
- if (con == -1) {
- Cyber_fb_get_par(&par);
- error = fbhw->encode_var(var, &par);
- } else
- *var = disp[con].var;
- return(error);
-}
-
-
-static void Cyber_fb_set_disp(int con)
-{
- struct fb_fix_screeninfo fix;
-
- Cyber_fb_get_fix(&fix, con);
- if (con == -1)
- con = 0;
- disp[con].screen_base = (u_char *)fix.smem_start;
- disp[con].visual = fix.visual;
- disp[con].type = fix.type;
- disp[con].type_aux = fix.type_aux;
- disp[con].ypanstep = fix.ypanstep;
- disp[con].ywrapstep = fix.ywrapstep;
- disp[con].can_soft_blank = 1;
- disp[con].inverse = Cyberfb_inverse;
-}
-
-
- /*
- * Set the User Defined Part of the Display
- */
-
-static int Cyber_fb_set_var(struct fb_var_screeninfo *var, int con)
-{
- int err, oldxres, oldyres, oldvxres, oldvyres, oldbpp;
-
- if ((err = do_fb_set_var(var, con == currcon)))
- return(err);
- if ((var->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW) {
- oldxres = disp[con].var.xres;
- oldyres = disp[con].var.yres;
- oldvxres = disp[con].var.xres_virtual;
- oldvyres = disp[con].var.yres_virtual;
- oldbpp = disp[con].var.bits_per_pixel;
- disp[con].var = *var;
- if (oldxres != var->xres || oldyres != var->yres ||
- oldvxres != var->xres_virtual || oldvyres != var->yres_virtual ||
- oldbpp != var->bits_per_pixel) {
- Cyber_fb_set_disp(con);
- (*fb_info.changevar)(con);
- alloc_cmap(&disp[con].cmap, 0, 0);
- do_install_cmap(con);
- }
- }
- var->activate = 0;
- return(0);
-}
-
-
- /*
- * Get the Colormap
- */
-
-static int Cyber_fb_get_cmap(struct fb_cmap *cmap, int kspc, int con)
-{
- if (con == currcon) /* current console? */
- return(do_fb_get_cmap(cmap, &disp[con].var, kspc));
- else if (disp[con].cmap.len) /* non default colormap? */
- copy_cmap(&disp[con].cmap, cmap, kspc ? 0 : 2);
- else
- copy_cmap(get_default_colormap(disp[con].var.bits_per_pixel), cmap,
- kspc ? 0 : 2);
- return(0);
-}
-
-
- /*
- * Set the Colormap
- */
-
-static int Cyber_fb_set_cmap(struct fb_cmap *cmap, int kspc, int con)
-{
- int err;
-
- if (!disp[con].cmap.len) { /* no colormap allocated? */
- if ((err = alloc_cmap(&disp[con].cmap, 1<<disp[con].var.bits_per_pixel,
- 0)))
- return(err);
- }
- if (con == currcon) /* current console? */
- return(do_fb_set_cmap(cmap, &disp[con].var, kspc));
- else
- copy_cmap(cmap, &disp[con].cmap, kspc ? 0 : 1);
- return(0);
-}
-
-
- /*
- * Pan or Wrap the Display
- *
- * This call looks only at xoffset, yoffset and the FB_VMODE_YWRAP flag
- */
-
-static int Cyber_fb_pan_display(struct fb_var_screeninfo *var, int con)
-{
- return(-EINVAL);
-}
-
-
- /*
- * Cybervision Frame Buffer Specific ioctls
- */
-
-static int Cyber_fb_ioctl(struct inode *inode, struct file *file,
- u_int cmd, u_long arg, int con)
-{
- return(-EINVAL);
-}
-
-
-static struct fb_ops Cyber_fb_ops = {
- Cyber_fb_get_fix, Cyber_fb_get_var, Cyber_fb_set_var, Cyber_fb_get_cmap,
- Cyber_fb_set_cmap, Cyber_fb_pan_display, Cyber_fb_ioctl
-};
-
-
-int Cyber_probe(void)
-{
- CyberKey = zorro_find(MANUF_PHASE5, PROD_CYBERVISION, 0, 0);
- return(CyberKey);
-}
-
-
-void Cyber_video_setup(char *options, int *ints)
-{
- char *this_opt;
- int i;
-
- fb_info.fontname[0] = '\0';
-
- if (!options || !*options)
- return;
-
- for (this_opt = strtok(options, ","); this_opt; this_opt = strtok(NULL, ","))
- if (!strcmp(this_opt, "inverse")) {
- Cyberfb_inverse = 1;
- for (i = 0; i < 16; i++) {
- red16[i] = ~red16[i];
- green16[i] = ~green16[i];
- blue16[i] = ~blue16[i];
- }
- } else if (!strncmp(this_opt, "font:", 5))
- strcpy(fb_info.fontname, this_opt+5);
- else if (!strcmp (this_opt, "cyber8"))
- Cyberfb_Cyber8 = 1;
- else if (!strcmp (this_opt, "cyber16"))
- Cyberfb_Cyber16 = 1;
- else
- Cyberfb_mode = get_video_mode(this_opt);
-}
-
-
- /*
- * Initialization
- */
-
-__initfunc(struct fb_info *Cyber_fb_init(long *mem_start))
-{
- int err;
- struct Cyber_fb_par par;
-
- memstart = mem_start;
-
- fbhw = &Cyber_switch;
-
- err = register_framebuffer(Cyber_fb_name, &node, &Cyber_fb_ops,
- NUM_TOTAL_MODES, Cyber_fb_predefined);
- if (err < 0)
- panic("Cannot register frame buffer\n");
-
- fbhw->init();
- fbhw->decode_var(&Cyber_fb_predefined[Cyberfb_mode], &par);
- fbhw->encode_var(&Cyber_fb_predefined[0], &par);
-
- strcpy(fb_info.modename, Cyber_fb_name);
- fb_info.disp = disp;
- fb_info.switch_con = &Cyberfb_switch;
- fb_info.updatevar = &Cyberfb_updatevar;
- fb_info.blank = &Cyberfb_blank;
- fb_info.setcmap = &Cyberfb_setcmap;
-
- do_fb_set_var(&Cyber_fb_predefined[0], 1);
- Cyber_fb_get_var(&disp[0].var, -1);
- Cyber_fb_set_disp(-1);
- do_install_cmap(0);
- return(&fb_info);
-}
-
-
-static int Cyberfb_switch(int con)
-{
- /* Do we have to save the colormap? */
- if (disp[currcon].cmap.len)
- do_fb_get_cmap(&disp[currcon].cmap, &disp[currcon].var, 1);
-
- do_fb_set_var(&disp[con].var, 1);
- currcon = con;
- /* Install new colormap */
- do_install_cmap(con);
- return(0);
-}
-
-
- /*
- * Update the `var' structure (called by fbcon.c)
- *
- * This call looks only at yoffset and the FB_VMODE_YWRAP flag in `var'.
- * Since it's called by a kernel driver, no range checking is done.
- */
-
-static int Cyberfb_updatevar(int con)
-{
- return(0);
-}
-
-
- /*
- * Blank the display.
- */
-
-static void Cyberfb_blank(int blank)
-{
- fbhw->blank(blank);
-}
-
-
- /*
- * Set the colormap
- */
-
-static int Cyberfb_setcmap(struct fb_cmap *cmap, int con)
-{
- return(Cyber_fb_set_cmap(cmap, 1, con));
-}
-
-
- /*
- * Get a Video Mode
- */
-
-static int get_video_mode(const char *name)
-{
- int i;
-
- for (i = 1; i < NUM_PREDEF_MODES; i++)
- if (!strcmp(name, Cyber_fb_modenames[i]))
- return(i);
- return(0);
-}
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen, slshen@lbl.gov