patch-2.1.73 linux/arch/m68k/amiga/retz3fb.c
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- Lines: 1755
- Date:
Wed Dec 31 16:00:00 1969
- Orig file:
v2.1.72/linux/arch/m68k/amiga/retz3fb.c
- Orig date:
Sat May 24 09:10:22 1997
diff -u --recursive --new-file v2.1.72/linux/arch/m68k/amiga/retz3fb.c linux/arch/m68k/amiga/retz3fb.c
@@ -1,1754 +0,0 @@
-/*
- * Linux/arch/m68k/amiga/retz3fb.c -- Low level implementation of the
- * RetinaZ3 frame buffer device
- *
- * Copyright (C) 1997 Jes Sorensen
- *
- * This file is based on the CyberVision64 frame buffer device and
- * the generic Cirrus Logic driver.
- *
- * cyberfb.c: Copyright (C) 1996 Martin Apel,
- * Geert Uytterhoeven
- * clgen.c: Copyright (C) 1996 Frank Neumann
- *
- * History:
- * - 22 Jan 97: Initial work
- * - 14 Feb 97: Screen initialization works somewhat, still only
- * 8-bit packed pixel is supported.
- *
- * 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/fb.h>
-#include <linux/zorro.h>
-#include <linux/init.h>
-
-#include <asm/uaccess.h>
-#include <asm/system.h>
-#include <asm/irq.h>
-#include <asm/pgtable.h>
-
-#include "retz3fb.h"
-
-/* #define DEBUG if(1) */
-#define DEBUG if(0)
-
-/*
- * Reserve space for one pattern line.
- *
- * For the time being we only support 4MB boards!
- */
-
-#define PAT_MEM_SIZE 16*3
-#define PAT_MEM_OFF (4*1024*1024 - PAT_MEM_SIZE)
-
-#define arraysize(x) (sizeof(x)/sizeof(*(x)))
-
-struct retz3_fb_par {
- int xres;
- int yres;
- int xres_vir;
- int yres_vir;
- int xoffset;
- int yoffset;
- int bpp;
-
- struct fb_bitfield red;
- struct fb_bitfield green;
- struct fb_bitfield blue;
- struct fb_bitfield transp;
-
- int pixclock;
- int left_margin; /* time from sync to picture */
- int right_margin; /* time from picture to sync */
- int upper_margin; /* time from sync to picture */
- int lower_margin;
- int hsync_len; /* length of horizontal sync */
- int vsync_len; /* length of vertical sync */
- int vmode;
-};
-
-struct display_data {
- long h_total; /* Horizontal Total */
- long h_sstart; /* Horizontal Sync Start */
- long h_sstop; /* Horizontal Sync Stop */
- long h_bstart; /* Horizontal Blank Start */
- long h_bstop; /* Horizontal Blank Stop */
- long h_dispend; /* Horizontal Display End */
- long v_total; /* Vertical Total */
- long v_sstart; /* Vertical Sync Start */
- long v_sstop; /* Vertical Sync Stop */
- long v_bstart; /* Vertical Blank Start */
- long v_bstop; /* Vertical Blank Stop */
- long v_dispend; /* Horizontal Display End */
-};
-
-static struct retz3_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 retz3_fb_par *par);
- int (*decode_var)(struct fb_var_screeninfo *var, struct retz3_fb_par *par);
- int (*encode_var)(struct fb_var_screeninfo *var, struct retz3_fb_par *par);
- int (*getcolreg)(unsigned int regno, unsigned int *red, unsigned
- int *green, unsigned int *blue, unsigned int *transp);
- int (*setcolreg)(unsigned int regno, unsigned int red, unsigned int
- green, unsigned int blue, unsigned int transp);
- void (*blank)(int blank);
-} *fbhw;
-
-
-/*
- * Frame Buffer Name
- */
-
-static char retz3_fb_name[16] = "RetinaZ3";
-
-
-static int z3_key = 0;
-static unsigned char retz3_color_table [256][4];
-static unsigned long z3_mem;
-static unsigned long z3_fbmem;
-static unsigned long z3_size;
-static volatile unsigned char *z3_regs;
-
-static long *memstart;
-
-
-/*
- * Predefined Video Mode Names
- */
-
-static char *retz3_fb_modenames[] = {
-
- /*
- * Autodetect (Default) Video Mode
- */
-
- "default",
-
- /*
- * Predefined Video Modes
- */
-
- "640x480", /* RetinaZ3 8 bpp */
- "800x600", /* RetinaZ3 8 bpp */
- "1024x768i",
- "640x480-16", /* RetinaZ3 16 bpp */
- "640x480-24", /* RetinaZ3 24 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"
-};
-
-/*
- * A small info on how to convert XFree86 timing values into fb
- * timings - by Frank Neumann:
- *
-An XFree86 mode line consists of the following fields:
- "800x600" 50 800 856 976 1040 600 637 643 666
- < name > DCF HR SH1 SH2 HFL VR SV1 SV2 VFL
-
-The fields in the fb_var_screeninfo structure are:
- unsigned long pixclock; * pixel clock in ps (pico seconds) *
- unsigned long left_margin; * time from sync to picture *
- unsigned long right_margin; * time from picture to sync *
- unsigned long upper_margin; * time from sync to picture *
- unsigned long lower_margin;
- unsigned long hsync_len; * length of horizontal sync *
- unsigned long vsync_len; * length of vertical sync *
-
-1) Pixelclock:
- xfree: in MHz
- fb: In Picoseconds (ps)
-
- pixclock = 1000000 / DCF
-
-2) horizontal timings:
- left_margin = HFL - SH2
- right_margin = SH1 - HR
- hsync_len = SH2 - SH1
-
-3) vertical timings:
- upper_margin = VFL - SV2
- lower_margin = SV1 - VR
- vsync_len = SV2 - SV1
-
-Good examples for VESA timings can be found in the XFree86 source tree,
-under "programs/Xserver/hw/xfree86/doc/modeDB.txt".
-*/
-
-/*
- * Predefined Video Mode Definitions
- */
-
-static struct fb_var_screeninfo retz3_fb_predefined[] = {
-
- /*
- * Autodetect (Default) Video Mode
- */
-
- { 0, },
-
- /*
- * Predefined Video Modes
- */
-
- /*
- * NB: it is very important to adjust the pixel-clock to the color-depth.
- */
-
- {
- 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_ACCEL_RETINAZ3, 38461, 28, 32, 12, 10, 96, 2,
- FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
- },
- /*
- ModeLine "800x600" 36 800 824 896 1024 600 601 603 625
- < name > DCF HR SH1 SH2 HFL VR SV1 SV2 VFL
- */
- {
- /* 800 x 600, 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_ACCEL_RETINAZ3, 27778, 64, 24, 22, 1, 120, 2,
- FB_SYNC_COMP_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
- },
- /*
- ModeLine "1024x768i" 45 1024 1064 1224 1264 768 777 785 817 interlace
- < name > DCF HR SH1 SH2 HFL VR SV1 SV2 VFL
- */
- {
- /* 1024 x 768, 8 bpp, interlaced */
- 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_ACCEL_RETINAZ3, 22222, 40, 40, 32, 9, 160, 8,
- FB_SYNC_COMP_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_INTERLACED
- },
- {
- 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_ACCEL_RETINAZ3, 38461/2, 28, 32, 12, 10, 96, 2,
- FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
- },
- {
- 640, 480, 640, 480, 0, 0, 24, 0,
- {8, 8, 8}, {8, 8, 8}, {8, 8, 8}, {0, 0, 0},
- 0, 0, -1, -1, FB_ACCEL_RETINAZ3, 38461/3, 28, 32, 12, 10, 96, 2,
- FB_SYNC_HOR_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(retz3_fb_predefined)
-#define NUM_PREDEF_MODES (5)
-
-
-static int z3fb_inverse = 0;
-static int z3fb_mode = 0;
-
-
-/*
- * Interface used by the world
- */
-
-int retz3_probe(void);
-void retz3_video_setup(char *options, int *ints);
-
-static int retz3_fb_get_fix(struct fb_fix_screeninfo *fix, int con);
-static int retz3_fb_get_var(struct fb_var_screeninfo *var, int con);
-static int retz3_fb_set_var(struct fb_var_screeninfo *var, int con);
-static int retz3_fb_get_cmap(struct fb_cmap *cmap, int kspc, int con);
-static int retz3_fb_set_cmap(struct fb_cmap *cmap, int kspc, int con);
-static int retz3_fb_pan_display(struct fb_var_screeninfo *var, int con);
-static int retz3_fb_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg, int con);
-
-
-/*
- * Interface to the low level console driver
- */
-
-struct fb_info *retz3_fb_init(long *mem_start); /* Through amiga_fb_init() */
-static int z3fb_switch(int con);
-static int z3fb_updatevar(int con);
-static void z3fb_blank(int blank);
-static int z3fb_setcmap(struct fb_cmap *cmap, int con);
-
-
-/*
- * Accelerated Functions used by the low level console driver
- */
-
-void retz3_bitblt(struct fb_var_screeninfo *scr,
- unsigned short curx, unsigned short cury, unsigned
- short destx, unsigned short desty, unsigned short
- width, unsigned short height, unsigned short cmd,
- unsigned short mask);
-void retz3_fill(unsigned short x, unsigned short y, unsigned short
- width, unsigned short height, unsigned short mode,
- unsigned short color);
-
-/*
- * Hardware Specific Routines
- */
-
-static int retz3_init(void);
-static int retz3_encode_fix(struct fb_fix_screeninfo *fix,
- struct retz3_fb_par *par);
-static int retz3_decode_var(struct fb_var_screeninfo *var,
- struct retz3_fb_par *par);
-static int retz3_encode_var(struct fb_var_screeninfo *var,
- struct retz3_fb_par *par);
-static int retz3_getcolreg(unsigned int regno, unsigned int *red,
- unsigned int *green, unsigned int *blue,
- unsigned int *transp);
-static int retz3_setcolreg(unsigned int regno, unsigned int red,
- unsigned int green, unsigned int blue,
- unsigned int transp);
-static void retz3_blank(int blank);
-
-
-/*
- * Internal routines
- */
-
-static void retz3_fb_get_par(struct retz3_fb_par *par);
-static void retz3_fb_set_par(struct retz3_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 retz3_fb_set_disp(int con);
-static int get_video_mode(const char *name);
-
-
-/* -------------------- Hardware specific routines -------------------------- */
-
-static unsigned short find_fq(unsigned int freq)
-{
- unsigned long f;
- long tmp;
- long prev = 0x7fffffff;
- long n2, n1 = 3;
- unsigned long m;
- unsigned short res = 0;
-
- if (freq <= 31250000)
- n2 = 3;
- else if (freq <= 62500000)
- n2 = 2;
- else if (freq <= 125000000)
- n2 = 1;
- else if (freq <= 250000000)
- n2 = 0;
- else
- return(0);
-
-
- do {
- f = freq >> (10 - n2);
-
- m = (f * n1) / (14318180/1024);
-
- if (m > 129)
- break;
-
- tmp = (((m * 14318180) >> n2) / n1) - freq;
- if (tmp < 0)
- tmp = -tmp;
-
- if (tmp < prev) {
- prev = tmp;
- res = (((n2 << 5) | (n1-2)) << 8) | (m-2);
- }
-
- } while ( (++n1) <= 21);
-
- return res;
-}
-
-
-static int retz3_set_video(struct fb_var_screeninfo *var,
- struct retz3_fb_par *par)
-{
- float freq_f;
- long freq;
-
- int xres, hfront, hsync, hback;
- int yres, vfront, vsync, vback;
- unsigned char tmp;
- unsigned short best_freq;
- struct display_data data;
-
- short clocksel = 0; /* Apparantly this is always zero */
-
- int bpp = var->bits_per_pixel;
-
- /*
- * XXX
- */
- if (bpp == 24)
- return 0;
-
- if ((bpp != 8) && (bpp != 16) && (bpp != 24))
- return -EFAULT;
-
- par->xoffset = 0;
- par->yoffset = 0;
-
- xres = var->xres * bpp / 4;
- hfront = var->right_margin * bpp / 4;
- hsync = var->hsync_len * bpp / 4;
- hback = var->left_margin * bpp / 4;
-
- if (var->vmode & FB_VMODE_DOUBLE)
- {
- yres = var->yres * 2;
- vfront = var->lower_margin * 2;
- vsync = var->vsync_len * 2;
- vback = var->upper_margin * 2;
- }
- else if (var->vmode & FB_VMODE_INTERLACED)
- {
- yres = (var->yres + 1) / 2;
- vfront = (var->lower_margin + 1) / 2;
- vsync = (var->vsync_len + 1) / 2;
- vback = (var->upper_margin + 1) / 2;
- }
- else
- {
- yres = var->yres; /* -1 ? */
- vfront = var->lower_margin;
- vsync = var->vsync_len;
- vback = var->upper_margin;
- }
-
- data.h_total = (hback / 8) + (xres / 8)
- + (hfront / 8) + (hsync / 8) - 1 /* + 1 */;
- data.h_dispend = ((xres + bpp - 1)/ 8) - 1;
- data.h_bstart = xres / 8 /* + 1 */;
-
- data.h_bstop = data.h_total+1 + 2 + 1;
- data.h_sstart = (xres / 8) + (hfront / 8) + 1;
- data.h_sstop = (xres / 8) + (hfront / 8) + (hsync / 8) + 1;
-
- data.v_total = yres + vfront + vsync + vback - 1;
-
- data.v_dispend = yres - 1;
- data.v_bstart = yres;
-
- data.v_bstop = data.v_total;
- data.v_sstart = yres + vfront - 1 - 2;
- data.v_sstop = yres + vfront + vsync - 1;
-
-#if 0 /* testing */
-
- printk("HBS: %i\n", data.h_bstart);
- printk("HSS: %i\n", data.h_sstart);
- printk("HSE: %i\n", data.h_sstop);
- printk("HBE: %i\n", data.h_bstop);
- printk("HT: %i\n", data.h_total);
-
- printk("hsync: %i\n", hsync);
- printk("hfront: %i\n", hfront);
- printk("hback: %i\n", hback);
-
- printk("VBS: %i\n", data.v_bstart);
- printk("VSS: %i\n", data.v_sstart);
- printk("VSE: %i\n", data.v_sstop);
- printk("VBE: %i\n", data.v_bstop);
- printk("VT: %i\n", data.v_total);
-
- printk("vsync: %i\n", vsync);
- printk("vfront: %i\n", vfront);
- printk("vback: %i\n", vback);
-#endif
-
- if (data.v_total >= 1024)
- printk("MAYDAY: v_total >= 1024; bailing out!\n");
-
- reg_w(GREG_MISC_OUTPUT_W, 0xe3 | ((clocksel & 3) * 0x04));
- reg_w(GREG_FEATURE_CONTROL_W, 0x00);
-
- seq_w(SEQ_RESET, 0x00);
- seq_w(SEQ_RESET, 0x03); /* reset sequencer logic */
-
- /*
- * CLOCKING_MODE bits:
- * 2: This one is only set for certain text-modes, wonder if
- * it may be for EGA-lines? (it was referred to as CLKDIV2)
- * (The CL drivers sets it to 0x21 with the comment:
- * FullBandwidth (video off) and 8/9 dot clock)
- */
- seq_w(SEQ_CLOCKING_MODE, 0x01 | 0x00 /* 0x08 */);
-
- seq_w(SEQ_MAP_MASK, 0x0f); /* enable writing to plane 0-3 */
- seq_w(SEQ_CHAR_MAP_SELECT, 0x00); /* doesn't matter in gfx-mode */
- seq_w(SEQ_MEMORY_MODE, 0x06); /* CL driver says 0x0e for 256 col mode*/
- seq_w(SEQ_RESET, 0x01);
- seq_w(SEQ_RESET, 0x03);
-
- seq_w(SEQ_EXTENDED_ENABLE, 0x05);
-
- seq_w(SEQ_CURSOR_CONTROL, 0x00); /* disable cursor */
- seq_w(SEQ_PRIM_HOST_OFF_HI, 0x00);
- seq_w(SEQ_PRIM_HOST_OFF_HI, 0x00);
- seq_w(SEQ_LINEAR_0, 0x4a);
- seq_w(SEQ_LINEAR_1, 0x00);
-
- seq_w(SEQ_SEC_HOST_OFF_HI, 0x00);
- seq_w(SEQ_SEC_HOST_OFF_LO, 0x00);
- seq_w(SEQ_EXTENDED_MEM_ENA, 0x3 | 0x4 | 0x10 | 0x40);
-
- /*
- * The lower 4 bits (0-3) are used to set the font-width for
- * text-mode - DON'T try to set this for gfx-mode.
- */
- seq_w(SEQ_EXT_CLOCK_MODE, 0x10);
- seq_w(SEQ_EXT_VIDEO_ADDR, 0x03);
-
- /*
- * Extended Pixel Control:
- * bit 0: text-mode=0, gfx-mode=1 (Graphics Byte ?)
- * bit 1: (Packed/Nibble Pixel Format ?)
- * bit 4-5: depth, 0=1-8bpp, 1=9-16bpp, 2=17-24bpp
- */
- seq_w(SEQ_EXT_PIXEL_CNTL, 0x01 | (((bpp / 8) - 1) << 4));
-
- seq_w(SEQ_BUS_WIDTH_FEEDB, 0x04);
- seq_w(SEQ_COLOR_EXP_WFG, 0x01);
- seq_w(SEQ_COLOR_EXP_WBG, 0x00);
- seq_w(SEQ_EXT_RW_CONTROL, 0x00);
- seq_w(SEQ_MISC_FEATURE_SEL, (0x51 | (clocksel & 8)));
- seq_w(SEQ_COLOR_KEY_CNTL, 0x40);
- seq_w(SEQ_COLOR_KEY_MATCH0, 0x00);
- seq_w(SEQ_COLOR_KEY_MATCH1, 0x00);
- seq_w(SEQ_COLOR_KEY_MATCH2, 0x00);
- seq_w(SEQ_CRC_CONTROL, 0x00);
- seq_w(SEQ_PERF_SELECT, 0x10);
- seq_w(SEQ_ACM_APERTURE_1, 0x00);
- seq_w(SEQ_ACM_APERTURE_2, 0x30);
- seq_w(SEQ_ACM_APERTURE_3, 0x00);
- seq_w(SEQ_MEMORY_MAP_CNTL, 0x03);
-
-
- /* unlock register CRT0..CRT7 */
- crt_w(CRT_END_VER_RETR, (data.v_sstop & 0x0f) | 0x20);
-
- /* Zuerst zu schreibende Werte nur per printk ausgeben */
- DEBUG printk("CRT_HOR_TOTAL: %ld\n", data.h_total);
- crt_w(CRT_HOR_TOTAL, data.h_total & 0xff);
-
- DEBUG printk("CRT_HOR_DISP_ENA_END: %ld\n", data.h_dispend);
- crt_w(CRT_HOR_DISP_ENA_END, (data.h_dispend) & 0xff);
-
- DEBUG printk("CRT_START_HOR_BLANK: %ld\n", data.h_bstart);
- crt_w(CRT_START_HOR_BLANK, data.h_bstart & 0xff);
-
- DEBUG printk("CRT_END_HOR_BLANK: 128+%ld\n", data.h_bstop % 32);
- crt_w(CRT_END_HOR_BLANK, 0x80 | (data.h_bstop & 0x1f));
-
- DEBUG printk("CRT_START_HOR_RETR: %ld\n", data.h_sstart);
- crt_w(CRT_START_HOR_RETR, data.h_sstart & 0xff);
-
- tmp = (data.h_sstop & 0x1f);
- if (data.h_bstop & 0x20)
- tmp |= 0x80;
- DEBUG printk("CRT_END_HOR_RETR: %d\n", tmp);
- crt_w(CRT_END_HOR_RETR, tmp);
-
- DEBUG printk("CRT_VER_TOTAL: %ld\n", data.v_total & 0xff);
- crt_w(CRT_VER_TOTAL, (data.v_total & 0xff));
-
- tmp = 0x10; /* LineCompare bit #9 */
- if (data.v_total & 256)
- tmp |= 0x01;
- if (data.v_dispend & 256)
- tmp |= 0x02;
- if (data.v_sstart & 256)
- tmp |= 0x04;
- if (data.v_bstart & 256)
- tmp |= 0x08;
- if (data.v_total & 512)
- tmp |= 0x20;
- if (data.v_dispend & 512)
- tmp |= 0x40;
- if (data.v_sstart & 512)
- tmp |= 0x80;
- DEBUG printk("CRT_OVERFLOW: %d\n", tmp);
- crt_w(CRT_OVERFLOW, tmp);
-
- crt_w(CRT_PRESET_ROW_SCAN, 0x00); /* not CL !!! */
-
- tmp = 0x40; /* LineCompare bit #8 */
- if (data.v_bstart & 512)
- tmp |= 0x20;
- if (var->vmode & FB_VMODE_DOUBLE)
- tmp |= 0x80;
- DEBUG printk("CRT_MAX_SCAN_LINE: %d\n", tmp);
- crt_w(CRT_MAX_SCAN_LINE, tmp);
-
- crt_w(CRT_CURSOR_START, 0x00);
- crt_w(CRT_CURSOR_END, 8 & 0x1f); /* font height */
-
- crt_w(CRT_START_ADDR_HIGH, 0x00);
- crt_w(CRT_START_ADDR_LOW, 0x00);
-
- crt_w(CRT_CURSOR_LOC_HIGH, 0x00);
- crt_w(CRT_CURSOR_LOC_LOW, 0x00);
-
- DEBUG printk("CRT_START_VER_RETR: %ld\n", data.v_sstart & 0xff);
- crt_w(CRT_START_VER_RETR, (data.v_sstart & 0xff));
-
-#if 1
- /* 5 refresh cycles per scanline */
- DEBUG printk("CRT_END_VER_RETR: 64+32+%ld\n", data.v_sstop % 16);
- crt_w(CRT_END_VER_RETR, ((data.v_sstop & 0x0f) | 0x40 | 0x20));
-#else
- DEBUG printk("CRT_END_VER_RETR: 128+32+%ld\n", data.v_sstop % 16);
- crt_w(CRT_END_VER_RETR, ((data.v_sstop & 0x0f) | 128 | 32));
-#endif
- DEBUG printk("CRT_VER_DISP_ENA_END: %ld\n", data.v_dispend & 0xff);
- crt_w(CRT_VER_DISP_ENA_END, (data.v_dispend & 0xff));
-
- DEBUG printk("CRT_START_VER_BLANK: %ld\n", data.v_bstart & 0xff);
- crt_w(CRT_START_VER_BLANK, (data.v_bstart & 0xff));
-
- DEBUG printk("CRT_END_VER_BLANK: %ld\n", data.v_bstop & 0xff);
- crt_w(CRT_END_VER_BLANK, (data.v_bstop & 0xff));
-
- DEBUG printk("CRT_MODE_CONTROL: 0xe3\n");
- crt_w(CRT_MODE_CONTROL, 0xe3);
-
- DEBUG printk("CRT_LINE_COMPARE: 0xff\n");
- crt_w(CRT_LINE_COMPARE, 0xff);
-
- tmp = (var->xres_virtual / 8) * (bpp / 8);
- crt_w(CRT_OFFSET, tmp);
-
- crt_w(CRT_UNDERLINE_LOC, 0x07); /* probably font-height - 1 */
-
- tmp = 0x20; /* Enable extended end bits */
- if (data.h_total & 0x100)
- tmp |= 0x01;
- if ((data.h_dispend) & 0x100)
- tmp |= 0x02;
- if (data.h_bstart & 0x100)
- tmp |= 0x04;
- if (data.h_sstart & 0x100)
- tmp |= 0x08;
- if (var->vmode & FB_VMODE_INTERLACED)
- tmp |= 0x10;
- DEBUG printk("CRT_EXT_HOR_TIMING1: %d\n", tmp);
- crt_w(CRT_EXT_HOR_TIMING1, tmp);
-
- tmp = 0x00;
- if (((var->xres_virtual / 8) * (bpp / 8)) & 0x100)
- tmp |= 0x10;
- crt_w(CRT_EXT_START_ADDR, tmp);
-
- tmp = 0x00;
- if (data.h_total & 0x200)
- tmp |= 0x01;
- if ((data.h_dispend) & 0x200)
- tmp |= 0x02;
- if (data.h_bstart & 0x200)
- tmp |= 0x04;
- if (data.h_sstart & 0x200)
- tmp |= 0x08;
- tmp |= ((data.h_bstop & 0xc0) >> 2);
- tmp |= ((data.h_sstop & 0x60) << 1);
- crt_w(CRT_EXT_HOR_TIMING2, tmp);
- DEBUG printk("CRT_EXT_HOR_TIMING2: %d\n", tmp);
-
- tmp = 0x10; /* Line compare bit 10 */
- if (data.v_total & 0x400)
- tmp |= 0x01;
- if ((data.v_dispend) & 0x400)
- tmp |= 0x02;
- if (data.v_bstart & 0x400)
- tmp |= 0x04;
- if (data.v_sstart & 0x400)
- tmp |= 0x08;
- tmp |= ((data.v_bstop & 0x300) >> 3);
- if (data.v_sstop & 0x10)
- tmp |= 0x80;
- crt_w(CRT_EXT_VER_TIMING, tmp);
- DEBUG printk("CRT_EXT_VER_TIMING: %d\n", tmp);
-
- crt_w(CRT_MONITOR_POWER, 0x00);
-
- /*
- * Convert from ps to Hz.
- */
- freq_f = (1.0/(float)var->pixclock) * 1000000000;
- freq = ((long)freq_f) * 1000;
-
- best_freq = find_fq(freq);
- pll_w(0x02, best_freq);
- best_freq = find_fq(61000000);
- pll_w(0x0a, best_freq);
- pll_w(0x0e, 0x22);
-
- gfx_w(GFX_SET_RESET, 0x00);
- gfx_w(GFX_ENABLE_SET_RESET, 0x00);
- gfx_w(GFX_COLOR_COMPARE, 0x00);
- gfx_w(GFX_DATA_ROTATE, 0x00);
- gfx_w(GFX_READ_MAP_SELECT, 0x00);
- gfx_w(GFX_GRAPHICS_MODE, 0x00);
- gfx_w(GFX_MISC, 0x05);
- gfx_w(GFX_COLOR_XCARE, 0x0f);
- gfx_w(GFX_BITMASK, 0xff);
-
- reg_r(ACT_ADDRESS_RESET);
- attr_w(ACT_PALETTE0 , 0x00);
- attr_w(ACT_PALETTE1 , 0x01);
- attr_w(ACT_PALETTE2 , 0x02);
- attr_w(ACT_PALETTE3 , 0x03);
- attr_w(ACT_PALETTE4 , 0x04);
- attr_w(ACT_PALETTE5 , 0x05);
- attr_w(ACT_PALETTE6 , 0x06);
- attr_w(ACT_PALETTE7 , 0x07);
- attr_w(ACT_PALETTE8 , 0x08);
- attr_w(ACT_PALETTE9 , 0x09);
- attr_w(ACT_PALETTE10, 0x0a);
- attr_w(ACT_PALETTE11, 0x0b);
- attr_w(ACT_PALETTE12, 0x0c);
- attr_w(ACT_PALETTE13, 0x0d);
- attr_w(ACT_PALETTE14, 0x0e);
- attr_w(ACT_PALETTE15, 0x0f);
- reg_r(ACT_ADDRESS_RESET);
-
- attr_w(ACT_ATTR_MODE_CNTL, 0x09); /* 0x01 for CL */
-
- attr_w(ACT_OVERSCAN_COLOR, 0x00);
- attr_w(ACT_COLOR_PLANE_ENA, 0x0f);
- attr_w(ACT_HOR_PEL_PANNING, 0x00);
- attr_w(ACT_COLOR_SELECT, 0x00);
-
- reg_r(ACT_ADDRESS_RESET);
- reg_w(ACT_DATA, 0x20);
-
- reg_w(VDAC_MASK, 0xff);
-
- /*
- * Extended palette adressing ???
- */
- switch (bpp){
- case 8:
- reg_w(0x83c6, 0x00);
- break;
- case 16:
- reg_w(0x83c6, 0x60);
- break;
- case 24:
- reg_w(0x83c6, 0xe0);
- break;
- default:
- printk("Illegal color-depth: %i\n", bpp);
- }
-
- reg_w(VDAC_ADDRESS, 0x00);
-
- seq_w(SEQ_MAP_MASK, 0x0f );
-
- return 0;
-}
-
-/*
- * 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 retz3_init(void)
-{
- int i;
-#if 0
- volatile unsigned long *CursorBase;
-#endif
- unsigned long board_addr, board_size;
- struct ConfigDev *cd;
-
- cd = zorro_get_board (z3_key);
- zorro_config_board (z3_key, 0);
- board_addr = (unsigned long)cd->cd_BoardAddr;
- board_size = (unsigned long)cd->cd_BoardSize;
-
- for (i = 0; i < 256; i++){
- for (i = 0; i < 256; i++){
- retz3_color_table [i][0] = i;
- retz3_color_table [i][1] = i;
- retz3_color_table [i][2] = i;
- retz3_color_table [i][3] = 0;
- }
- }
-
- *memstart = (*memstart + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1);
-
- z3_mem = kernel_map (board_addr, board_size,
- KERNELMAP_NOCACHE_SER, memstart);
-
- z3_regs = (char*) z3_mem;
- z3_fbmem = z3_mem + VIDEO_MEM_OFFSET;
-
- /* Get memory size - for now we asume its a 4MB board */
-
- z3_size = 0x00400000; /* 4 MB */
-
- memset ((char*)z3_fbmem, 0, z3_size);
-
- /* Disable hardware cursor */
-
- seq_w(SEQ_CURSOR_Y_INDEX, 0x00);
-
-
-#if 0
- /* Initialize hardware cursor */
- CursorBase = (unsigned long *)((char *)(z3_mem) + z3_size - 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;
- }
-#endif
-
- retz3_setcolreg (255, 56, 100, 160, 0);
- retz3_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 retz3_encode_fix(struct fb_fix_screeninfo *fix,
- struct retz3_fb_par *par)
-{
- int i;
-
- strcpy(fix->id, retz3_fb_name);
- fix->smem_start = z3_fbmem;
- fix->smem_len = z3_size;
-
- 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 retz3_decode_var(struct fb_var_screeninfo *var,
- struct retz3_fb_par *par)
-{
- par->xres = var->xres;
- par->yres = var->yres;
- par->xres_vir = var->xres_virtual;
- par->yres_vir = var->yres_virtual;
- par->bpp = var->bits_per_pixel;
- par->pixclock = var->pixclock;
- par->vmode = var->vmode;
-
- par->red = var->red;
- par->green = var->green;
- par->blue = var->blue;
- par->transp = var->transp;
-
- par->left_margin = var->left_margin;
- par->right_margin = var->right_margin;
- par->upper_margin = var->upper_margin;
- par->lower_margin = var->lower_margin;
- par->hsync_len = var->hsync_len;
- par->vsync_len = var->vsync_len;
-
- return 0;
-}
-
-
-/*
- * Fill the `var' structure based on the values in `par' and maybe
- * other values read out of the hardware.
- */
-
-static int retz3_encode_var(struct fb_var_screeninfo *var,
- struct retz3_fb_par *par)
-{
- int i;
-
- var->xres = par->xres;
- var->yres = par->yres;
- var->xres_virtual = par->xres_vir;
- var->yres_virtual = par->yres_vir;
- var->xoffset = 0;
- var->yoffset = 0;
-
- var->bits_per_pixel = par->bpp;
- var->grayscale = 0;
-
- var->red = par->red;
- var->green = par->green;
- var->blue = par->blue;
- var->transp = par->transp;
-
- var->nonstd = 0;
- var->activate = 0;
-
- var->height = -1;
- var->width = -1;
-
- var->accel = FB_ACCEL_RETINAZ3;
-
- var->pixclock = par->pixclock;
-
- var->sync = 0; /* ??? */
- var->left_margin = par->left_margin;
- var->right_margin = par->right_margin;
- var->upper_margin = par->upper_margin;
- var->lower_margin = par->lower_margin;
- var->hsync_len = par->hsync_len;
- var->vsync_len = par->vsync_len;
-
- for (i = 0; i < arraysize(var->reserved); i++)
- var->reserved[i] = 0;
-
- var->vmode = par->vmode;
- 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 retz3_setcolreg(unsigned int regno, unsigned int red,
- unsigned int green, unsigned int blue,
- unsigned int transp)
-{
- /* We'll get to this */
-
- if (regno > 255)
- return 1;
-
- retz3_color_table [regno][0] = red & 0xff;
- retz3_color_table [regno][1] = green & 0xff;
- retz3_color_table [regno][2] = blue & 0xff;
- retz3_color_table [regno][3] = transp;
-
- reg_w(VDAC_ADDRESS_W, regno);
- reg_w(VDAC_DATA, (red & 0xff) >> 2);
- reg_w(VDAC_DATA, (green & 0xff) >> 2);
- reg_w(VDAC_DATA, (blue & 0xff) >> 2);
-
- return 0;
-}
-
-
-/*
- * Read a single color register and split it into
- * colors/transparent. Return != 0 for invalid regno.
- */
-
-static int retz3_getcolreg(unsigned int regno, unsigned int *red,
- unsigned int *green, unsigned int *blue,
- unsigned int *transp)
-{
- if (regno > 255)
- return 1;
- *red = retz3_color_table [regno][0];
- *green = retz3_color_table [regno][1];
- *blue = retz3_color_table [regno][2];
- *transp = retz3_color_table [regno][3];
- return 0;
-}
-
-
-/*
- * (Un)Blank the screen
- */
-
-void retz3_blank(int blank)
-{
- int i;
-
- if (blank)
- for (i = 0; i < 256; i++){
- reg_w(VDAC_ADDRESS_W, i);
- reg_w(VDAC_DATA, 0);
- reg_w(VDAC_DATA, 0);
- reg_w(VDAC_DATA, 0);
- }
- else
- for (i = 0; i < 256; i++){
- reg_w(VDAC_ADDRESS_W, i);
- reg_w(VDAC_DATA, retz3_color_table [i][0] >> 2);
- reg_w(VDAC_DATA, retz3_color_table [i][1] >> 2);
- reg_w(VDAC_DATA, retz3_color_table [i][2] >> 2);
- }
-}
-
-
-void retz3_bitblt (struct fb_var_screeninfo *var,
- unsigned short srcx, unsigned short srcy, unsigned
- short destx, unsigned short desty, unsigned short
- width, unsigned short height, unsigned short cmd,
- unsigned short mask)
-{
-
- volatile unsigned long *acm = (unsigned long *) (z3_mem + ACM_OFFSET);
- unsigned long *pattern = (unsigned long *)(z3_fbmem + PAT_MEM_OFF);
-
- unsigned short mod;
- unsigned long tmp;
- unsigned long pat, src, dst;
- unsigned char blt_status;
-
- int i, xres_virtual = var->xres_virtual;
- short bpp = (var->bits_per_pixel & 0xff);
-
- if (bpp < 8)
- bpp = 8;
-
- tmp = mask | (mask << 16);
-
-#if 0
- /*
- * Check for blitter finished before we start messing with the
- * pattern.
- */
- do{
- blt_status = *(((volatile unsigned char *)acm) +
- (ACM_START_STATUS + 2));
- }while ((blt_status & 1) == 0);
-#endif
-
- i = 0;
- do{
- *pattern++ = tmp;
- }while(i++ < bpp/4);
-
- tmp = cmd << 8;
- *(acm + ACM_RASTEROP_ROTATION/4) = tmp;
-
- mod = 0xc0c2;
-
- pat = 8 * PAT_MEM_OFF;
- dst = bpp * (destx + desty * xres_virtual);
-
- /*
- * Source is not set for clear.
- */
- if ((cmd != Z3BLTclear) && (cmd != Z3BLTset)) {
- src = bpp * (srcx + srcy * xres_virtual);
-
- if (destx > srcx) {
- mod &= ~0x8000;
- src += bpp * (width - 1);
- dst += bpp * (width - 1);
- pat += bpp * 2;
- }
- if (desty > srcy) {
- mod &= ~0x4000;
- src += bpp * (height - 1) * xres_virtual;
- dst += bpp * (height - 1) * xres_virtual;
- pat += bpp * 4;
- }
-
- *(acm + ACM_SOURCE/4) = cpu_to_le32(src);
- }
-
- *(acm + ACM_PATTERN/4) = cpu_to_le32(pat);
-
- *(acm + ACM_DESTINATION/4) = cpu_to_le32(dst);
-
- tmp = mod << 16;
- *(acm + ACM_CONTROL/4) = tmp;
-
- tmp = width | (height << 16);
-
- *(acm + ACM_BITMAP_DIMENSION/4) = cpu_to_le32(tmp);
-
- *(((volatile unsigned char *)acm) + ACM_START_STATUS) = 0x00;
- *(((volatile unsigned char *)acm) + ACM_START_STATUS) = 0x01;
-
- /*
- * No reason to wait for the blitter to finish, it is better
- * just to check if it has finished before we use it again.
- */
-#if 1
-#if 0
- while ((*(((volatile unsigned char *)acm) +
- (ACM_START_STATUS + 2)) & 1) == 0);
-#else
- do{
- blt_status = *(((volatile unsigned char *)acm) +
- (ACM_START_STATUS + 2));
- }
- while ((blt_status & 1) == 0);
-#endif
-#endif
-}
-
-#if 0
-void retz3_fill (unsigned short x, unsigned short y, unsigned
- short width, unsigned short height,
- unsigned short mode, unsigned short color)
-{
-
-}
-#endif
-
-
-/**************************************************************
- * Move cursor to x, y
- */
-void retz3_MoveCursor (unsigned short x, unsigned short y)
-{
- /* Guess we gotta deal with the cursor at some point */
-}
-
-
-/* -------------------- Interfaces to hardware functions -------------------- */
-
-
-static struct fb_hwswitch retz3_switch = {
- retz3_init, retz3_encode_fix, retz3_decode_var, retz3_encode_var,
- retz3_getcolreg, retz3_setcolreg, retz3_blank
-};
-
-
-/* -------------------- Generic routines ------------------------------------ */
-
-
-/*
- * Fill the hardware's `par' structure.
- */
-
-static void retz3_fb_get_par(struct retz3_fb_par *par)
-{
- if (current_par_valid)
- *par = current_par;
- else
- fbhw->decode_var(&retz3_fb_predefined[z3fb_mode], par);
-}
-
-
-static void retz3_fb_set_par(struct retz3_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 retz3_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)
- retz3_fb_set_par(&par);
- fbhw->encode_var(var, &par);
- var->activate = activate;
-
-#if 1
- retz3_set_video(var, ¤t_par);
-#endif
- return 0;
-}
-
-
-/*
- * Default Colormaps
- */
-
-static unsigned short red16[] =
- { 0x0000, 0x0000, 0x0000, 0x0000, 0xc000, 0xc000, 0xc000, 0xc000,
- 0x8000, 0x0000, 0x0000, 0x0000, 0xffff, 0xffff, 0xffff, 0xffff };
-static unsigned short green16[] =
- { 0x0000, 0x0000, 0xc000, 0xc000, 0x0000, 0x0000, 0xc000, 0xc000,
- 0x8000, 0x0000, 0xffff, 0xffff, 0x0000, 0x0000, 0xffff, 0xffff };
-static unsigned short blue16[] =
- { 0x0000, 0xc000, 0x0000, 0xc000, 0x0000, 0xc000, 0x0000, 0xc000,
- 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;
- unsigned short *red, *green, *blue, *transp;
- unsigned 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;
- unsigned short *red, *green, *blue, *transp;
- unsigned 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(unsigned 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(unsigned 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 retz3_fb_get_fix(struct fb_fix_screeninfo *fix, int con)
-{
- struct retz3_fb_par par;
- int error = 0;
-
- if (con == -1)
- retz3_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 retz3_fb_get_var(struct fb_var_screeninfo *var, int con)
-{
- struct retz3_fb_par par;
- int error = 0;
-
- if (con == -1) {
- retz3_fb_get_par(&par);
- error = fbhw->encode_var(var, &par);
- } else
- *var = disp[con].var;
- return error;
-}
-
-
-static void retz3_fb_set_disp(int con)
-{
- struct fb_fix_screeninfo fix;
-
- retz3_fb_get_fix(&fix, con);
- if (con == -1)
- con = 0;
- disp[con].screen_base = (unsigned 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 = z3fb_inverse;
-}
-
-
-/*
- * Set the User Defined Part of the Display
- */
-
-static int retz3_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) {
- retz3_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 retz3_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 retz3_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 retz3_fb_pan_display(struct fb_var_screeninfo *var, int con)
-{
- return -EINVAL;
-}
-
-
-/*
- * RetinaZ3 Frame Buffer Specific ioctls
- */
-
-static int retz3_fb_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg, int con)
-{
- return -EINVAL;
-}
-
-
-static struct fb_ops retz3_fb_ops = {
- retz3_fb_get_fix, retz3_fb_get_var, retz3_fb_set_var, retz3_fb_get_cmap,
- retz3_fb_set_cmap, retz3_fb_pan_display, retz3_fb_ioctl
-};
-
-
-int retz3_probe(void)
-{
- z3_key = zorro_find(MANUF_MACROSYSTEMS2, PROD_RETINA_Z3, 0, 0);
- return(z3_key);
-}
-
-
-void retz3_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")) {
- z3fb_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
- z3fb_mode = get_video_mode(this_opt);
- }
-}
-
-
-/*
- * Initialization
- */
-
-__initfunc(struct fb_info *retz3_fb_init(long *mem_start))
-{
- int err;
- struct retz3_fb_par par;
-
- memstart = mem_start;
-
- fbhw = &retz3_switch;
-
- err = register_framebuffer(retz3_fb_name, &node, &retz3_fb_ops,
- NUM_TOTAL_MODES, retz3_fb_predefined);
- if (err < 0)
- panic("Cannot register frame buffer\n");
-
- fbhw->init();
-
- if (z3fb_mode == -1)
- z3fb_mode = 1;
-
- fbhw->decode_var(&retz3_fb_predefined[z3fb_mode], &par);
- fbhw->encode_var(&retz3_fb_predefined[0], &par);
-
- strcpy(fb_info.modename, retz3_fb_name);
- fb_info.disp = disp;
- fb_info.switch_con = &z3fb_switch;
- fb_info.updatevar = &z3fb_updatevar;
- fb_info.blank = &z3fb_blank;
- fb_info.setcmap = &z3fb_setcmap;
-
- do_fb_set_var(&retz3_fb_predefined[0], 0);
- retz3_fb_get_var(&disp[0].var, -1);
- retz3_fb_set_disp(-1);
- do_install_cmap(0);
-
- return &fb_info;
-}
-
-
-static int z3fb_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 z3fb_updatevar(int con)
-{
- return 0;
-}
-
-
-/*
- * Blank the display.
- */
-
-static void z3fb_blank(int blank)
-{
- fbhw->blank(blank);
-}
-
-
-/*
- * Set the colormap
- */
-
-static int z3fb_setcmap(struct fb_cmap *cmap, int con)
-{
- return(retz3_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, retz3_fb_modenames[i])){
- retz3_fb_predefined[0] = retz3_fb_predefined[i];
- return i;
- }
- return -1;
-}
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen, slshen@lbl.gov