patch-2.1.67 linux/drivers/video/retz3fb.c
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- Lines: 1647
- Date:
Mon Nov 24 01:18:59 1997
- Orig file:
v2.1.66/linux/drivers/video/retz3fb.c
- Orig date:
Wed Dec 31 16:00:00 1969
diff -u --recursive --new-file v2.1.66/linux/drivers/video/retz3fb.c linux/drivers/video/retz3fb.c
@@ -0,0 +1,1646 @@
+/*
+ * Linux/drivers/video/retz3fb.c -- 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/module.h>
+#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;
+static struct fb_info fb_info;
+
+
+/*
+ * 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 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;
+
+
+/*
+ * 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
+ */
+
+void retz3_video_setup(char *options, int *ints);
+
+static int retz3_fb_open(int fbidx);
+static int retz3_fb_release(int fbidx);
+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
+ */
+
+unsigned long retz3_fb_init(unsigned long mem_start);
+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 void do_install_cmap(int con);
+/*
+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)
+{
+ short i;
+#if 0
+ volatile unsigned long *CursorBase;
+#endif
+
+ 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;
+ }
+ }
+
+ /* 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)
+{
+ short i;
+
+ strcpy(fix->id, retz3_fb_name);
+ fix->smem_start = (char *)z3_fbmem;
+ fix->smem_len = z3_size;
+ fix->mmio_start = (unsigned char *)z3_regs;
+ fix->mmio_len = 0x00c00000;
+
+ 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)
+{
+ short 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)
+{
+ short 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
+
+
+#if 0
+/*
+ * Move cursor to x, y
+ */
+void retz3_MoveCursor (unsigned short x, unsigned short y)
+{
+ /* Guess we gotta deal with the cursor at some point */
+}
+#endif
+
+/* -------------------- 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;
+
+ /* XXX ... what to do about isactive ? */
+
+ if ((var->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW && isactive)
+ retz3_fb_set_par(&par);
+ fbhw->encode_var(var, &par);
+ var->activate = activate;
+
+ retz3_set_video(var, ¤t_par);
+
+ return 0;
+}
+
+
+static void do_install_cmap(int con)
+{
+ if (con != currcon)
+ return;
+ if (fb_display[con].cmap.len)
+ fb_set_cmap(&fb_display[con].cmap, &fb_display[con].var, 1,
+ fbhw->setcolreg);
+ else
+ fb_set_cmap(fb_default_cmap(fb_display[con].var.bits_per_pixel),
+ &fb_display[con].var, 1,
+ fbhw->setcolreg);
+}
+
+
+/*
+ * Open/Release the frame buffer device
+ */
+
+static int retz3_fb_open(int fbidx)
+{
+ /*
+ * Nothing, only a usage count for the moment
+ */
+
+ MOD_INC_USE_COUNT;
+ return 0;
+}
+
+static int retz3_fb_release(int fbidx)
+{
+ MOD_DEC_USE_COUNT;
+ 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(&fb_display[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 = fb_display[con].var;
+ return error;
+}
+
+
+#if 1
+static void retz3_fb_set_disp(int con)
+{
+ struct fb_fix_screeninfo fix;
+ struct display *display;
+
+ if (con >= 0)
+ display = &fb_display[con];
+ else
+ display = &disp; /* used during initialization */
+
+ retz3_fb_get_fix(&fix, con);
+
+ if (con == -1)
+ con = 0;
+
+ display->screen_base = (unsigned char *)fix.smem_start;
+ 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 = z3fb_inverse;
+}
+#endif
+
+/*
+ * 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;
+ struct display *display;
+
+ if (con >= 0)
+ display = &fb_display[con];
+ else
+ display = &disp; /* used during initialization */
+
+#if 0
+ if (con == -1)
+ con = 0;
+#endif
+
+ if ((err = do_fb_set_var(var, con == currcon)))
+ return err;
+ if ((var->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW) {
+ oldxres = display->var.xres;
+ oldyres = display->var.yres;
+ oldvxres = display->var.xres_virtual;
+ oldvyres = display->var.yres_virtual;
+ oldbpp = display->var.bits_per_pixel;
+ display->var = *var;
+
+ if (oldxres != var->xres || oldyres != var->yres ||
+ oldvxres != var->xres_virtual ||
+ oldvyres != var->yres_virtual ||
+ oldbpp != var->bits_per_pixel) {
+
+ struct fb_fix_screeninfo fix;
+ retz3_fb_get_fix(&fix, con);
+
+ display->screen_base = fix.smem_start;
+ display->visual = fix.visual;
+ display->type = fix.type;
+ display->type_aux = fix.type_aux;
+ display->ypanstep = fix.ypanstep;
+ display->ywrapstep = fix.ywrapstep;
+ display->line_length = fix.line_length;
+ display->can_soft_blank = 1;
+ display->inverse = z3fb_inverse;
+/*
+ retz3_fb_set_disp(con);
+*/
+ if (fb_info.changevar)
+ (*fb_info.changevar)(con);
+ }
+
+ if (oldbpp != var->bits_per_pixel) {
+ if ((err = fb_alloc_cmap(&display->cmap, 0, 0)))
+ return err;
+ do_install_cmap(con);
+ }
+ }
+ 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(fb_get_cmap(cmap, &fb_display[con].var, kspc,
+ fbhw->getcolreg));
+ else if (fb_display[con].cmap.len) /* non default colormap? */
+ fb_copy_cmap(&fb_display[con].cmap, cmap, kspc ? 0 : 2);
+ else
+ fb_copy_cmap(fb_default_cmap(fb_display[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 (!fb_display[con].cmap.len) { /* no colormap allocated? */
+ if ((err = fb_alloc_cmap(&fb_display[con].cmap,
+ 1<<fb_display[con].var.bits_per_pixel,
+ 0)))
+ return err;
+ }
+ if (con == currcon) /* current console? */
+ return(fb_set_cmap(cmap, &fb_display[con].var, kspc,
+ fbhw->setcolreg));
+ else
+ fb_copy_cmap(cmap, &fb_display[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_open, retz3_fb_release, 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
+};
+
+
+__initfunc(void retz3_video_setup(char *options, int *ints))
+{
+ char *this_opt;
+
+ 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;
+ fb_invert_cmaps();
+ } else if (!strncmp(this_opt, "font:", 5))
+ strcpy(fb_info.fontname, this_opt+5);
+ else
+ z3fb_mode = get_video_mode(this_opt);
+ }
+}
+
+
+/*
+ * Initialization
+ */
+
+__initfunc(unsigned long retz3_fb_init(unsigned long mem_start))
+{
+ int err;
+ unsigned long board_addr, board_size;
+ unsigned int key;
+ const struct ConfigDev *cd;
+
+ struct retz3_fb_par par;
+
+ if (!(key = zorro_find(ZORRO_PROD_MACROSYSTEMS_RETINA_Z3, 0, 0)))
+ return mem_start;
+
+ cd = zorro_get_board (key);
+ zorro_config_board (key, 0);
+ board_addr = (unsigned long)cd->cd_BoardAddr;
+ board_size = (unsigned long)cd->cd_BoardSize;
+
+ z3_mem = kernel_map (board_addr, board_size,
+ KERNELMAP_NOCACHE_SER, &mem_start);
+
+ 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);
+
+ fbhw = &retz3_switch;
+
+ fbhw->init();
+
+ strcpy(fb_info.modename, retz3_fb_name);
+ fb_info.changevar = NULL;
+ fb_info.node = -1;
+ fb_info.fbops = &retz3_fb_ops;
+ fb_info.fbvar_num = NUM_TOTAL_MODES;
+ fb_info.fbvar = retz3_fb_predefined;
+ 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;
+
+ err = register_framebuffer(&fb_info);
+ if (err < 0)
+ return mem_start;
+
+ if (z3fb_mode == -1)
+ z3fb_mode = 1;
+
+ fbhw->decode_var(&retz3_fb_predefined[z3fb_mode], &par);
+ fbhw->encode_var(&retz3_fb_predefined[0], &par);
+
+ do_fb_set_var(&retz3_fb_predefined[0], 0);
+ retz3_fb_get_var(&disp.var, -1);
+
+ retz3_fb_set_disp(-1);
+
+ do_install_cmap(0);
+
+ printk("%s frame buffer device, using %ldK of video memory\n",
+ fb_info.modename, z3_size>>10);
+
+ /* TODO: This driver cannot be unloaded yet */
+ MOD_INC_USE_COUNT;
+
+ return mem_start;
+}
+
+
+static int z3fb_switch(int con)
+{
+ /* Do we have to save the colormap? */
+ if (fb_display[currcon].cmap.len)
+ fb_get_cmap(&fb_display[currcon].cmap,
+ &fb_display[currcon].var, 1, fbhw->getcolreg);
+
+ do_fb_set_var(&fb_display[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)
+{
+ short 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;
+}
+
+
+#ifdef MODULE
+int init_module(void)
+{
+ return(retz3_fb_init(NULL));
+}
+
+void cleanup_module(void)
+{
+ /*
+ * Not reached because the usecount will never
+ * be decremented to zero
+ */
+ unregister_framebuffer(&fb_info);
+ /* TODO: clean up ... */
+}
+#endif /* MODULE */
+
+
+/*
+ * Visible symbols for modules
+ */
+
+EXPORT_SYMBOL(retz3_bitblt);
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