* SPX/LCSPX/SPXg/SPXgt accelerated framebuffer driver for NetBSD/VAX

/* $NetBSD: spx.c,v 1.13 2025/03/09 18:50:20 hans Exp $ */
/*
* SPX/LCSPX/SPXg/SPXgt accelerated framebuffer driver for NetBSD/VAX
* Copyright (c) 2005 Blaz Antonic
* All rights reserved.
*
* This software contains code written by Michael L. Hitch.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the abovementioned copyrights
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: spx.c,v 1.13 2025/03/09 18:50:20 hans Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/callout.h>
#include <sys/conf.h>
#include <sys/cpu.h>
#include <sys/device.h>
#include <sys/kmem.h>
#include <sys/time.h>

#include <machine/vsbus.h>
#include <machine/sid.h>
#include <machine/ka420.h>

#include <dev/cons.h>

#include <dev/dec/dzreg.h>
#include <dev/dec/dzvar.h>
#include <dev/dec/dzkbdvar.h>

#include <dev/wscons/wsdisplayvar.h>
#include <dev/wscons/wsconsio.h>
#include <dev/wscons/wscons_callbacks.h>
#include <dev/wsfont/wsfont.h>

#include "machine/scb.h"

#include "dzkbd.h"

#define CONF_LCSPX 0x02
#define CONF_SPXg 0x10

#define FB_IS_SPX 1
#define FB_IS_SPXg 2

/* Screen hardware defs */
#define SPX_FB_ADDR 0x38000000 /* Frame buffer */
#define SPXg_FB_ADDR_KA46 0x22200000
#define SPXg_FB_ADDR_KA49 0x28200000
#define SPXg_FB_ADDR ((vax_boardtype == VAX_BTYP_46) ? \
SPXg_FB_ADDR_KA46 : SPXg_FB_ADDR_KA49)

#define SPXg_WIN_SIZE 0x00100000 /* Window size */
/* # of pixels that fit into single window */
#define SPXg_WIN_LINEAR (SPXg_WIN_SIZE / 2)

#define SPXg_DELAY 5

/*
* off-screen font storage space
* 32x16 glyphs, 256 regular and underlined chars
*/
#define FONT_STORAGE_START (spx_xsize * spx_ysize)
#define FONT_STORAGE_SIZE (32 * 16 * 256 * 2)

/* register space defines */
#define SPX_REG_SIZE 0x00002000
#define SPX_REG_ADDR 0x39302000 /* 1st set of SPX registers */

#define SPXg_REG_SIZE 0x00004000
#define SPXg_REG_ADDR_KA46 0x22004000
#define SPXg_REG_ADDR_KA49 0x28004000
#define SPXg_REG_ADDR ((vax_boardtype == VAX_BTYP_46) ? \
SPXg_REG_ADDR_KA46 : SPXg_REG_ADDR_KA49)

#define SPX_REG1_SIZE 0x00001000
#define SPX_REG1_ADDR 0x39b00000 /* 2nd set of SPX registers */

#define SPXg_REG1_SIZE 0x00001000
#define SPXg_REG1_ADDR_KA46 0x22100000
#define SPXg_REG1_ADDR_KA49 0x28100000
#define SPXg_REG1_ADDR ((vax_boardtype == VAX_BTYP_46) ? \
SPXg_REG1_ADDR_KA46 : SPXg_REG1_ADDR_KA49)
#define SPX_REG(reg) regaddr[(reg - 0x2000) / 4]
#define SPXg_REG(reg) regaddr[(reg - 0x2000) / 2]

#define SPX_REG1(reg) regaddr1[(reg) / 4]
#define SPXg_REG1(reg) regaddr1[(reg) / 4]

/* few SPX register names */
#define SPX_COMMAND 0x21ec
#define SPX_XSTART 0x21d0
#define SPX_YSTART 0x21d4
#define SPX_XEND 0x21d8
#define SPX_YEND 0x21dc
#define SPX_DSTPIX 0x21e0
#define SPX_DSTPIX1 0x20e0
#define SPX_SRCPIX 0x21e4
#define SPX_SRCPIX1 0x20e4
#define SPX_MAIN3 0x219c
#define SPX_STRIDE 0x21e8 /* SRC | DST */
#define SPX_SRCMASK 0x21f0
#define SPX_DSTMASK 0x21f4
#define SPX_FG 0x2260
#define SPX_BG 0x2264
#define SPX_DESTLOOP 0x2270
#define SPX_MPC 0x21fc

/* few SPX opcodes (microcode entry points); rasterop # = opcode ? */
#define SPX_OP_FILLRECT 0x19
#define SPX_OP_COPYRECT 0x1a

/* bt459 locations */
#define SPX_BT459_ADDRL 0x39b10000
#define SPX_BT459_ADDRH 0x39b14000
#define SPX_BT459_REG 0x39b18000
#define SPX_BT459_CMAP 0x39b1c000

/* bt460 locations */
#define SPXg_BT460_BASE_KA46 0x200f0000
#define SPXg_BT460_BASE_KA49 0x2a000000
#define SPXg_BT460_BASE ((vax_boardtype == VAX_BTYP_46) ? \
SPXg_BT460_BASE_KA46 : SPXg_BT460_BASE_KA49)

#define SPX_BG_COLOR WS_DEFAULT_BG
#define SPX_FG_COLOR WS_DEFAULT_FG

/*
* cursor X = 0, Y = 0 on-screen bias
* FIXME: BIAS for various HW types
*/
#define CUR_XBIAS 360
#define CUR_YBIAS 37

/* few BT459 & BT460 indirect register defines */
#define SPXDAC_REG_CCOLOR_1 0x181
#define SPXDAC_REG_CCOLOR_2 0x182
#define SPXDAC_REG_CCOLOR_3 0x183
#define SPXDAC_REG_ID 0x200
#define SPXDAC_REG_CMD0 0x201
#define SPXDAC_REG_CMD1 0x202
#define SPXDAC_REG_CMD2 0x203
#define SPXDAC_REG_PRM 0x204
#define SPXDAC_REG_CCR 0x300
#define SPXDAC_REG_CXLO 0x301
#define SPXDAC_REG_CXHI 0x302
#define SPXDAC_REG_CYLO 0x303
#define SPXDAC_REG_CYHI 0x304
#define SPXDAC_REG_WXLO 0x305
#define SPXDAC_REG_WXHI 0x306
#define SPXDAC_REG_WYLO 0x307
#define SPXDAC_REG_WYHI 0x308
#define SPXDAC_REG_WWLO 0x309
#define SPXDAC_REG_WWHI 0x30a
#define SPXDAC_REG_WHLO 0x30b
#define SPXDAC_REG_WHHI 0x30c
#define SPXDAC_REG_CRAM_BASE 0x400

/*
* used to access top/bottom 8 bits of a 16-bit argument for split RAMDAC
* addressing
*/
#define HI(x) (((x) >> 8) & 0xff)
#define LO(x) ((x) & 0xff)

static int spx_match(device_t, cfdata_t, void *);
static void spx_attach(device_t, device_t, void *);

struct spx_softc {
device_t ss_dev;
};

CFATTACH_DECL_NEW(spx, sizeof(struct spx_softc),
spx_match, spx_attach, NULL, NULL);

static void spx_cursor(void *, int, int, int);
static int spx_mapchar(void *, int, unsigned int *);
static void spx_putchar(void *, int, int, u_int, long);
static void spx_copycols(void *, int, int, int, int);
static void spx_erasecols(void *, int, int, int, long);
static void spx_copyrows(void *, int, int, int);
static void spx_eraserows(void *, int, int, long);
static int spx_allocattr(void *, int, int, int, long *);
static int spx_get_cmap(struct wsdisplay_cmap *);
static int spx_set_cmap(struct wsdisplay_cmap *);

static int spx_map_regs(device_t, u_int, u_int, u_int, u_int);
static void SPX_render_font(void);
static void SPXg_render_font(void);
static int SPX_map_fb(device_t, struct vsbus_attach_args *);
static int SPXg_map_fb(device_t, struct vsbus_attach_args *);
static void spx_init_common(device_t, struct vsbus_attach_args *);

#define SPX_MAP_FB(self, va, type) if (! type ## _map_fb(self, va)) return
#define SPX_MAP_REGS(self, type) if (!spx_map_regs(self, \
type ## _REG_ADDR, \
type ## _REG_SIZE, \
type ## _REG1_ADDR, \
type ## _REG1_SIZE)) \
return

const struct wsdisplay_emulops spx_emulops = {
spx_cursor,
spx_mapchar,
spx_putchar,
spx_copycols,
spx_erasecols,
spx_copyrows,
spx_eraserows,
spx_allocattr
};

static char spx_stdscreen_name[10] = "160x128";
struct wsscreen_descr spx_stdscreen = {
spx_stdscreen_name, 160, 128, /* dynamically set */
&spx_emulops,
8, 15, /* dynamically set */
WSSCREEN_UNDERLINE|WSSCREEN_REVERSE|WSSCREEN_WSCOLORS,
};

const struct wsscreen_descr *_spx_scrlist[] = {
&spx_stdscreen,
};

const struct wsscreen_list spx_screenlist = {
sizeof(_spx_scrlist) / sizeof(struct wsscreen_descr *),
_spx_scrlist,
};

static volatile char *spxaddr;
static volatile long *regaddr;
static volatile long *regaddr1;

static volatile char *bt_addrl;
static volatile char *bt_addrh;
static volatile char *bt_reg;
static volatile char *bt_cmap;
static volatile char *bt_wait; /* SPXg/gt only */

static int spx_xsize;
static int spx_ysize;
static int spx_depth;
static int spx_cols;
static int spx_rows;
static long spx_fb_size;

/* Our current hardware colormap */
static struct hwcmap256 {
#define CMAP_SIZE 256 /* 256 R/G/B entries */
u_int8_t r[CMAP_SIZE];
u_int8_t g[CMAP_SIZE];
u_int8_t b[CMAP_SIZE];
} spx_cmap;

/* The default colormap */
static struct {
u_int8_t r[8];
u_int8_t g[8];
u_int8_t b[8];
} spx_default_cmap = {
{ 0x00, 0xff, 0x00, 0xff, 0x00, 0xff, 0x00, 0xff },
{ 0x00, 0x00, 0xff, 0x7f, 0x00, 0x00, 0xff, 0xff },
{ 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff }
};

static char fb_type = 0;
static char spxg_current_page = 0;
#define spxg_switch_page(nr) (SPXg_REG1(0x20) = ((1 << (nr) & 0xff)) << 16)

struct wsdisplay_font spx_font;
static u_char *qf;
static u_short *qf2;

#define QCHAR_INVALID(c) (((c) < spx_font.firstchar) || \
((c) >= spx_font.firstchar + spx_font.numchars))
#define QCHAR(c) (QCHAR_INVALID(c) ? 0 : (c) - spx_font.firstchar)

#define QFONT_INDEX(c, line) (QCHAR(c) * spx_font.fontheight + line)
#define QFONT_QF(c, line) qf[QFONT_INDEX(c, line)]
#define QFONT_QF2(c, line) qf2[QFONT_INDEX(c, line)]
#define QFONT(c, line) (spx_font.stride == 2 ? \
QFONT_QF2(c, line) : \
QFONT_QF(c, line))

/* replicate color value */
#define COLOR(x) (((x) << 24) | ((x) << 16) | ((x) << 8) | (x))

/* convert coordinates into linear offset */
#define LINEAR(x, y) ((y * spx_xsize) + x)

/* Linear pixel address */
#define SPX_POS(row, col, line, dot) \
((col) * spx_font.fontwidth + \
(row) * spx_font.fontheight * spx_xsize + \
(line) * spx_xsize + dot)

#define SPX_ADDR(row, col, line, dot) spxaddr[SPX_POS(row, col, line, dot)]

/* Recalculate absolute pixel address from linear address */
#define SPXg_ADDR(linear) spxaddr[((((linear) % SPXg_WIN_LINEAR) / 4) * 8) + \
(((linear) % SPXg_WIN_LINEAR) % 4)]

static int spx_ioctl(void *, void *, u_long, void *, int, struct lwp *);
static paddr_t spx_mmap(void *, void *, off_t, int);
static int spx_alloc_screen(void *, const struct wsscreen_descr *,
void **, int *, int *, long *);
static void spx_free_screen(void *, void *);
static int spx_show_screen(void *, void *, int, void (*) (void *, int, int),
void *);

static void spx_update_cmap(int entry, char red, char green, char blue);
static void set_btreg(u_int addr, u_char value);
static u_char get_btreg(u_int addr);

/* SPXg/gt delay */
static void spxg_delay(void);

/*
* SPX HW accelerated block copy
* common code in spx_blkcpy,
* HW-specific code accessed through spx_blkcpy_func pointer
*/
static void spx_blkcpy(u_int sxpos, u_int sypos,
u_int dxpos, u_int dypos,
u_int xdim, u_int ydim);

static void SPX_blkcpy(u_int sxpos, u_int sypos,
u_int dxpos, u_int dypos,
u_int xdim, u_int ydim,
char direction);
static void SPXg_blkcpy(u_int sxpos, u_int sypos,
u_int dxpos, u_int dypos,
u_int xdim, u_int ydim,
char direction);
static void (*spx_blkcpy_func)(u_int, u_int,
u_int, u_int,
u_int, u_int,
char);

/* SPX HW accelerated block set, no common code */
static void SPX_blkset(u_int xpos, u_int ypos,
u_int xdim, u_int ydim, char color);
static void SPXg_blkset(u_int xpos, u_int ypos,
u_int xdim, u_int ydim, char color);
static void (*spx_blkset_func)(u_int, u_int, u_int, u_int, char);
#define spx_blkset(x, y, xd, yd, c) spx_blkset_func(x, y, xd, yd, c)

/* SPX HW accelerated part of spx_putchar */
static void SPX_putchar(int, int, u_int, char, char);
static void SPXg_putchar(int, int, u_int, char, char);
static void (*spx_putchar_func)(int, int, u_int, char, char);

const struct wsdisplay_accessops spx_accessops = {
spx_ioctl,
spx_mmap,
spx_alloc_screen,
spx_free_screen,
spx_show_screen,
0 /* load_font */
};

/* TODO allocate ss_image dynamically for consoles beyond first one */
struct spx_screen {
int ss_curx;
int ss_cury;
int ss_cur_fg;
int ss_cur_bg;
struct {
u_char data; /* Image character */
u_char attr; /* Attribute: 80/70/08/07 */
} ss_image[160 * 128]; /* allow for maximum possible cell matrix */
};

#define SPX_ATTR_UNDERLINE 0x80
#define SPX_BG_MASK 0x70
#define SPX_ATTR_REVERSE 0x08
#define SPX_FG_MASK 0x07

static struct spx_screen spx_conscreen;
static struct spx_screen *prevscr, *curscr;
static struct spx_screen *savescr;

static int cur_fg, cur_bg;
static int spx_off = 1;

static void
spx_update_cmap(int entry, char red, char green, char blue)
{
*bt_addrl = LO(entry);
*bt_addrh = HI(entry);
if ((entry >= 0x181) && (entry <= 0x183)) {
*bt_reg = red;
*bt_reg = green;
*bt_reg = blue;
} else {
*bt_cmap = red;
*bt_cmap = green;
*bt_cmap = blue;
}
}

static void
set_btreg(u_int addr, u_char value)
{
*bt_addrl = LO(addr);
*bt_addrh = HI(addr);
*bt_reg = value;
}

static u_char
get_btreg(u_int addr)
{
*bt_addrl = LO(addr);
*bt_addrh = HI(addr);
return *bt_reg & 0xff;
}

static void
spxg_delay(void)
{
char i;

for (i = 0; i <= SPXg_DELAY; i++)
*bt_wait = *bt_wait + i;
}

static void
SPX_blkcpy(u_int sxpos, u_int sypos,
u_int dxpos, u_int dypos,
u_int xdim, u_int ydim,
char direction)
{
u_int counter = 0xffffe;
long temp = 0;

SPX_REG(SPX_COMMAND) = 0x84884648 | direction; /* 0x848c4648? */
SPX_REG(SPX_XSTART) = dxpos << 16;
SPX_REG(SPX_YSTART) = dypos << 16;
SPX_REG(SPX_XEND) = (dxpos + xdim) << 16;
SPX_REG(SPX_YEND) = (dypos + ydim) << 16;

temp = ((SPX_REG1(0x10) & 0xc0) << (30 - 6)) | \
((SPX_REG1(0x10) & 0x3f) << 24);

SPX_REG(SPX_DSTPIX) = temp + LINEAR(dxpos, dypos);
SPX_REG(SPX_SRCPIX) = temp + LINEAR(sxpos, sypos);
SPX_REG(SPX_SRCPIX1) = 0;
SPX_REG(SPX_STRIDE) = (spx_xsize << 16) | spx_xsize;
SPX_REG(SPX_SRCMASK) = 0xff;
SPX_REG(SPX_DSTMASK) = 0xff;

SPX_REG(SPX_DESTLOOP) = 0x00112003;
SPX_REG(SPX_MPC) = 0x2000 | SPX_OP_COPYRECT;

SPX_REG1(0x18) = 0xffffffff;
while ((counter) && ((SPX_REG1(0x18) & 2) == 0))
counter--;
}

static void
SPXg_blkcpy(u_int sxpos, u_int sypos,
u_int dxpos, u_int dypos,
u_int xdim, u_int ydim,
char direction)
{
u_int counter = 0xffffe;
long temp = 0;

SPXg_REG(SPX_COMMAND) = 0x84884648 | direction; spxg_delay();
SPXg_REG(SPX_XSTART) = dxpos << 16; spxg_delay();
SPXg_REG(SPX_YSTART) = dypos << 16; spxg_delay();
SPXg_REG(SPX_XEND) = (dxpos + xdim) << 16; spxg_delay();
SPXg_REG(SPX_YEND) = (dypos + ydim) << 16; spxg_delay();

temp = 0x3f << 24;

SPXg_REG(SPX_DSTPIX) = temp + LINEAR(dxpos, dypos); spxg_delay();
SPXg_REG(SPX_DSTPIX1) = 0xff000000; spxg_delay();
SPXg_REG(SPX_SRCPIX) = temp + LINEAR(sxpos, sypos); spxg_delay();
SPXg_REG(SPX_SRCPIX1) = 0; spxg_delay();
SPXg_REG(SPX_STRIDE) = (spx_xsize << 16) | spx_xsize; spxg_delay();
SPXg_REG(SPX_SRCMASK) = 0xffffffff; spxg_delay();
SPXg_REG(SPX_DSTMASK) = 0xffffffff; spxg_delay();

SPXg_REG(SPX_DESTLOOP) = 0x00112003; spxg_delay();
SPXg_REG(SPX_MPC) = 0x2000 | SPX_OP_COPYRECT; spxg_delay();

while ((counter) && ((SPXg_REG1(0x0) & 0x8000) == 0))
counter--;
}

static void
spx_blkcpy(u_int sxpos, u_int sypos,
u_int dxpos, u_int dypos,
u_int xdim, u_int ydim)
{
char direction = 0;

/* don't waste time checking whether src and dest actually overlap */
if (sxpos < dxpos) {
direction |= 0x01; /* X decrement */
sxpos += xdim;
dxpos += xdim;
xdim = -xdim;
}
if (sypos < dypos) {
direction |= 0x02; /* Y decrement */
sypos += ydim;
dypos += ydim;
ydim = -ydim;
}

spx_blkcpy_func(sxpos, sypos, dxpos, dypos, xdim, ydim, direction);
}

static void
SPX_blkset(u_int xpos, u_int ypos, u_int xdim, u_int ydim, char color)
{
u_int counter = 0xfffe;
long temp = 0;

SPX_REG(SPX_COMMAND) = 0x84884608;
SPX_REG(SPX_XSTART) = xpos << 16;
SPX_REG(SPX_YSTART) = ypos << 16;
SPX_REG(SPX_XEND) = (xpos + xdim) << 16;
SPX_REG(SPX_YEND) = (ypos + ydim) << 16;
SPX_REG(SPX_STRIDE) = (spx_xsize << 16) | spx_xsize;
SPX_REG(SPX_DESTLOOP) = 0x20102003;

temp = ((SPX_REG1(0x10) & 0xc0) << (30 - 6)) |
((SPX_REG1(0x10) & 0x3f) << 24);
SPX_REG(SPX_DSTPIX) = temp + LINEAR(xpos, ypos);

SPX_REG(SPX_FG) = COLOR(color);

SPX_REG(SPX_MPC) = 0x2000 | SPX_OP_FILLRECT;

SPX_REG1(0x18) = 0xffffffff;
while ((counter) && ((SPX_REG1(0x18) & 2) == 0))
counter--;
}

static void
SPXg_blkset(u_int xpos, u_int ypos, u_int xdim, u_int ydim, char color)
{
u_int counter = 0xfffe;
long temp = 0;

SPXg_REG(SPX_COMMAND) = 0x84884608; spxg_delay();
SPXg_REG(SPX_XSTART) = xpos << 16; spxg_delay();
SPXg_REG(SPX_YSTART) = ypos << 16; spxg_delay();
SPXg_REG(SPX_XEND) = (xpos + xdim) << 16; spxg_delay();
SPXg_REG(SPX_YEND) = (ypos + ydim) << 16; spxg_delay();
SPXg_REG(SPX_STRIDE) = (spx_xsize << 16) | spx_xsize; spxg_delay();

temp = 0x3f << 24;
SPXg_REG(SPX_DSTPIX) = temp + LINEAR(xpos, ypos); spxg_delay();
SPXg_REG(SPX_DSTPIX1) = 0xff000000; spxg_delay();

SPXg_REG(SPX_FG) = COLOR(color); spxg_delay();

SPXg_REG(SPX_DESTLOOP) = 0x20102003; spxg_delay();
SPXg_REG(SPX_MPC) = 0x2000 | SPX_OP_FILLRECT; spxg_delay();

while ((counter) && ((SPXg_REG1(0x0) & 0x8000) == 0))
counter--;
}

int
spx_match(device_t parent, cfdata_t match, void *aux)
{
struct vsbus_softc *sc = device_private(parent);
#if 0
struct vsbus_attach_args *va = aux;
char *ch = (char *)va->va_addr;
#endif

/*
* FIXME:
* add KA46 when/if ever somebody reports SPXg vax_confdata ID on VS 4000/60
* Ditto for SPX ID on KA42 & KA43
*/
if ((vax_boardtype != VAX_BTYP_49) ||
((vax_confdata & (CONF_LCSPX | CONF_SPXg)) == 0))
return 0;

/* FIXME add RAMDAC ID code ??? */
#if 0
/*
* FIXME:
* are memory addresses besides va->va_addr off limits at this time ?
* RAMDAC ID register test, should read 0x4a for LCSPX, 0x4b for SPXg
*/
if (get_btreg(SPXDAC_REG_ID) != 0x4a)
return 0;
#endif

sc->sc_mask = 0x04; /* XXX - should be generated */
scb_fake(0x14c, 0x15);

return 20;
}

static void
spx_attach(device_t parent, device_t self, void *aux)
{
struct spx_softc *sc = device_private(self);
struct vsbus_attach_args *va = aux;
struct wsemuldisplaydev_attach_args aa;

sc->ss_dev = self;

aprint_normal("\n");
aa.console = spxaddr != NULL;

spx_init_common(self, va);

/* display FB type based on RAMDAC ID */
switch (get_btreg(SPXDAC_REG_ID) & 0xff) {
case 0x4a:
aprint_normal_dev(self,
"RAMDAC ID: 0x%x, Bt459 (SPX/LCSPX) RAMDAC type\n",
get_btreg(SPXDAC_REG_ID) & 0xff);
break;

case 0x4b:
aprint_normal_dev(self,
"RAMDAC ID: 0x%x, Bt460 (SPXg) RAMDAC type\n",
get_btreg(SPXDAC_REG_ID) & 0xff);
break;
default:
aprint_error_dev(self, "unknown RAMDAC type 0x%x\n",
get_btreg(SPXDAC_REG_ID) & 0xff);
}

curscr = &spx_conscreen;
prevscr = curscr;

aa.scrdata = &spx_screenlist;
aa.accessops = &spx_accessops;

/* enable cursor */
set_btreg(SPXDAC_REG_CCR, 0xc1);

config_found(self, &aa, wsemuldisplaydevprint, CFARGS_NONE);
}

static int cur_on;

static void
spx_cursor(void *id, int on, int row, int col)
{
struct spx_screen *ss = id;
int attr, data __unused;

attr = ss->ss_image[row * spx_cols + col].attr;
data = ss->ss_image[row * spx_cols + col].data;

if (attr & SPX_ATTR_REVERSE) {
cur_bg = attr & SPX_FG_MASK;
cur_fg = (attr & SPX_BG_MASK) >> 4;
} else {
cur_fg = attr & SPX_FG_MASK;
cur_bg = (attr & SPX_BG_MASK) >> 4;
}

if (ss == curscr) {
#ifdef SOFTCURSOR
if ((cur_on = on))
spx_putchar_func(row, col, data, cur_bg, cur_fg);
else
spx_putchar_func(row, col, data, cur_fg, cur_bg);
#else
/* change cursor foreground color colormap entry */
spx_update_cmap(SPXDAC_REG_CCOLOR_3,
spx_cmap.r[cur_fg],
spx_cmap.g[cur_fg],
spx_cmap.b[cur_fg]);

/* update cursor position registers */
set_btreg(SPXDAC_REG_CXLO,
LO(col * spx_font.fontwidth + CUR_XBIAS));
set_btreg(SPXDAC_REG_CXHI,
HI(col * spx_font.fontwidth + CUR_XBIAS));
set_btreg(SPXDAC_REG_CYLO,
LO(row * spx_font.fontheight + CUR_YBIAS));
set_btreg(SPXDAC_REG_CYHI,
HI(row * spx_font.fontheight + CUR_YBIAS));

if ((cur_on = on))
/* enable cursor */
set_btreg(SPXDAC_REG_CCR, 0xc1);
else
/* disable cursor */
set_btreg(SPXDAC_REG_CCR, 0x01);
#endif
}

ss->ss_curx = col;
ss->ss_cury = row;
ss->ss_cur_bg = cur_bg;
ss->ss_cur_fg = cur_fg;
}

static int
spx_mapchar(void *id, int uni, unsigned int *index)
{
if (uni < 256) {
*index = uni;
return (5);
}
*index = ' ';
return (0);
}

static void
SPX_putchar(int row, int col, u_int c, char dot_fg, char dot_bg)
{
u_int counter = 0xffffe;
long temp = 0;

SPX_REG(SPX_FG) = COLOR(dot_fg);
SPX_REG(SPX_BG) = COLOR(dot_bg);
SPX_REG(SPX_MAIN3) = 0x01010101;
SPX_REG(SPX_COMMAND) = 0x84884648;
SPX_REG(SPX_XSTART) = (col * spx_font.fontwidth) << 16;
SPX_REG(SPX_YSTART) = (row * spx_font.fontheight) << 16;
SPX_REG(SPX_XEND) = ((col + 1) * spx_font.fontwidth) << 16;
SPX_REG(SPX_YEND) = ((row + 1) * spx_font.fontheight) << 16;

temp = ((SPX_REG1(0x10) & 0xc0) << (30 - 6)) | \
((SPX_REG1(0x10) & 0x3f) << 24);

SPX_REG(SPX_DSTPIX) = temp + LINEAR(col * spx_font.fontwidth,
row * spx_font.fontheight);
SPX_REG(SPX_SRCPIX) = temp + FONT_STORAGE_START
+ (c * spx_font.fontheight * spx_font.fontwidth);
SPX_REG(SPX_SRCPIX1) = 0;
SPX_REG(SPX_STRIDE) = (spx_font.fontwidth << 16) | spx_xsize;
SPX_REG(SPX_SRCMASK) = 0xff;
SPX_REG(SPX_DSTMASK) = 0xff;

SPX_REG(SPX_DESTLOOP) = 0x20142003;
SPX_REG(SPX_MPC) = 0x2000 | SPX_OP_COPYRECT;

SPX_REG1(0x18) = 0xffffffff;

while ((counter) && ((SPX_REG1(0x18) & 2) == 0))
counter--;
}

static void
SPXg_putchar(int row, int col, u_int c, char dot_fg, char dot_bg)
{
u_int counter = 0xffffe;
long temp = 0;

SPXg_REG(SPX_FG) = COLOR(dot_fg);
spxg_delay();
SPXg_REG(SPX_BG) = COLOR(dot_bg);
spxg_delay();
SPXg_REG(SPX_MAIN3) = 0x01010101;
spxg_delay();
SPXg_REG(SPX_COMMAND) = 0x84884648;
spxg_delay();
SPXg_REG(SPX_XSTART) = (col * spx_font.fontwidth) << 16;
spxg_delay();
SPXg_REG(SPX_YSTART) = (row * spx_font.fontheight) << 16;
spxg_delay();
SPXg_REG(SPX_XEND) = ((col + 1) * spx_font.fontwidth) << 16;
spxg_delay();
SPXg_REG(SPX_YEND) = ((row + 1) * spx_font.fontheight) << 16;
spxg_delay();

temp = 0x3f << 24;

SPXg_REG(SPX_DSTPIX) = temp + LINEAR(col * spx_font.fontwidth,
row * spx_font.fontheight);
spxg_delay();
SPXg_REG(SPX_DSTPIX1) = 0xff000000;
spxg_delay();
SPXg_REG(SPX_SRCPIX) = temp + FONT_STORAGE_START +
(c * spx_font.fontheight * spx_font.fontwidth);
spxg_delay();
SPXg_REG(SPX_SRCPIX1) = 0;
spxg_delay();
SPXg_REG(SPX_STRIDE) = (spx_font.fontwidth << 16) | spx_xsize;
spxg_delay();
SPXg_REG(SPX_SRCMASK) = 0xffffffff;
spxg_delay();
SPXg_REG(SPX_DSTMASK) = 0xffffffff;
spxg_delay();

SPXg_REG(SPX_DESTLOOP) = 0x20142003;
spxg_delay();
SPXg_REG(SPX_MPC) = 0x2000 | SPX_OP_COPYRECT;
spxg_delay();

while ((counter) && ((SPXg_REG1(0x0) & 0x8000) == 0))
counter--;
}

static void
spx_putchar(void *id, int row, int col, u_int c, long attr)
{
struct spx_screen *ss = id;
char dot_fg, dot_bg;

c &= 0xff;

ss->ss_image[row * spx_cols + col].data = c;
ss->ss_image[row * spx_cols + col].attr = attr;
if (ss != curscr)
return;

dot_fg = attr & SPX_FG_MASK;
dot_bg = (attr & SPX_BG_MASK) >> 4;
if (attr & SPX_ATTR_REVERSE) {
dot_fg = (attr & SPX_BG_MASK) >> 4;
dot_bg = attr & SPX_FG_MASK;
}

/* adjust glyph index for underlined text */
if (attr & SPX_ATTR_UNDERLINE)
c += 0x100;

spx_putchar_func(row, col, c, dot_fg, dot_bg);
}

/*
* copies columns inside a row.
*/
static void
spx_copycols(void *id, int row, int srccol, int dstcol, int ncols)
{
struct spx_screen *ss = id;

bcopy(&ss->ss_image[row * spx_cols + srccol],
&ss->ss_image[row * spx_cols + dstcol],
ncols * sizeof(ss->ss_image[0]));

if (ss == curscr)
spx_blkcpy(srccol * spx_font.fontwidth,
row * spx_font.fontheight,
dstcol * spx_font.fontwidth,
row * spx_font.fontheight,
ncols * spx_font.fontwidth,
spx_font.fontheight);
}

/*
* Erases a bunch of chars inside one row.
*/
static void
spx_erasecols(void *id, int row, int startcol, int ncols, long fillattr)
{
struct spx_screen *ss = id;
int offset = row * spx_cols + startcol;
int i;

memset(&ss->ss_image[row * spx_cols + startcol], 0,
ncols * sizeof(ss->ss_image[0]));

for (i = offset; i < offset + ncols; ++i)
ss->ss_image[i].attr = fillattr;

if (ss == curscr)
spx_blkset(startcol * spx_font.fontwidth,
row * spx_font.fontheight,
ncols * spx_font.fontwidth,
spx_font.fontheight,
(fillattr & SPX_BG_MASK) >> 4);
}

static void
spx_copyrows(void *id, int srcrow, int dstrow, int nrows)
{
struct spx_screen *ss = id;

bcopy(&ss->ss_image[srcrow * spx_cols],
&ss->ss_image[dstrow * spx_cols],
nrows * spx_cols * sizeof(ss->ss_image[0]));

if (ss == curscr)
spx_blkcpy(0, (srcrow * spx_font.fontheight),
0, (dstrow * spx_font.fontheight),
spx_xsize, (nrows * spx_font.fontheight));
}

static void
spx_eraserows(void *id, int startrow, int nrows, long fillattr)
{
struct spx_screen *ss = id;
int i;

memset(&ss->ss_image[startrow * spx_cols], 0,
nrows * spx_cols * sizeof(ss->ss_image[0]));

for (i = startrow * spx_cols; i < startrow + nrows * spx_cols; ++i)
ss->ss_image[i].attr = fillattr;

if (ss == curscr)
spx_blkset(0, (startrow * spx_font.fontheight),
spx_xsize, (nrows * spx_font.fontheight),
(fillattr & SPX_BG_MASK) >> 4);
}

static int
spx_allocattr(void *id, int fg, int bg, int flags, long *attrp)
{
long myattr;

if (flags & WSATTR_WSCOLORS)
myattr = (fg & SPX_FG_MASK) | ((bg << 4) & SPX_BG_MASK);
else
myattr = WSCOL_WHITE << 4; /* XXXX */
if (flags & WSATTR_REVERSE)
myattr |= SPX_ATTR_REVERSE;
if (flags & WSATTR_UNDERLINE)
myattr |= SPX_ATTR_UNDERLINE;
*attrp = myattr;
return 0;
}

static int
spx_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, struct lwp *l)
{
struct wsdisplay_fbinfo *fb = data;
int i;

switch (cmd) {
case WSDISPLAYIO_GTYPE:
*(u_int *)data = WSDISPLAY_TYPE_SPX;
break;

case WSDISPLAYIO_GINFO:
fb->height = spx_ysize;
fb->width = spx_xsize;
fb->depth = spx_depth;
fb->cmsize = 1 << spx_depth;
break;

case WSDISPLAYIO_GETCMAP:
return spx_get_cmap((struct wsdisplay_cmap *)data);

case WSDISPLAYIO_PUTCMAP:
return spx_set_cmap((struct wsdisplay_cmap *)data);

case WSDISPLAYIO_GMODE:
return EPASSTHROUGH;

case WSDISPLAYIO_SMODE:
/*
* if setting WSDISPLAYIO_MODE_EMUL, restore console cmap,
* current screen
*/
if (*(u_int *)data == WSDISPLAYIO_MODE_EMUL) {
for (i = 0; i < 8; i++) {
spx_cmap.r[i] = spx_default_cmap.r[i];
spx_cmap.g[i] = spx_default_cmap.g[i];
spx_cmap.b[i] = spx_default_cmap.b[i];
spx_update_cmap(i, spx_cmap.r[i], spx_cmap.g[i],
spx_cmap.b[i]);
}
if (savescr != NULL)
spx_show_screen(NULL, savescr, 0, NULL, NULL);
savescr = NULL;
} else { /* WSDISPLAYIO_MODE_{MAPPED,DUMBFB} */
if (curscr != NULL) {
savescr = curscr;
curscr = NULL;

/* disable cursor */
set_btreg(SPXDAC_REG_CCR, 0x01);
}
/* clear screen? */
}

return EPASSTHROUGH;

case WSDISPLAYIO_SVIDEO:
if (*(u_int *)data == WSDISPLAYIO_VIDEO_ON && spx_off) {
/* Unblank video */
set_btreg(SPXDAC_REG_CMD0, 0x48);

/* Enable sync */
set_btreg(SPXDAC_REG_CMD2, 0xc0);

spx_off = 0;
} else if (*(u_int *)data == WSDISPLAYIO_VIDEO_OFF && !spx_off) {
/* Blank video */
set_btreg(SPXDAC_REG_CMD0, 68);

/* Disable sync */
set_btreg(SPXDAC_REG_CMD2, 0x40);
spx_off = 1;
}
break;

case WSDISPLAYIO_GVIDEO:
*(u_int *)data = spx_off == 0 ?
WSDISPLAYIO_VIDEO_ON : WSDISPLAYIO_VIDEO_OFF;
break;

case WSDISPLAYIO_LINEBYTES:
*(u_int *)data = spx_xsize;
break;

default:
return EPASSTHROUGH;
}
return 0;
}

/*
* Bad idea on SPXg/gt due to windowed framebuffer access
*/
static paddr_t
spx_mmap(void *v, void *vs, off_t offset, int prot)
{
if (fb_type != FB_IS_SPX)
return -1;

if (offset >= spx_fb_size || offset < 0)
return -1;

return (SPX_FB_ADDR + offset) >> PGSHIFT;
}

static int
spx_alloc_screen(void *v, const struct wsscreen_descr *type, void **cookiep,
int *curxp, int *curyp, long *defattrp)
{
int i;
struct spx_screen *ss;

ss = kmem_zalloc(sizeof(struct spx_screen), KM_SLEEP);

*cookiep = ss;
*curxp = *curyp = 0;
*defattrp = (SPX_BG_COLOR << 4) | SPX_FG_COLOR;

for (i = 0; i < spx_cols * spx_rows; ++i)
ss->ss_image[i].attr = *defattrp;

return 0;
}

static void
spx_free_screen(void *v, void *cookie)
{
/* FIXME add something to actually free kmem_zalloc()ed screen? */
}

static int
spx_show_screen(void *v, void *cookie, int waitok,
void (*cb)(void *, int, int), void *cbarg)
{
struct spx_screen *ss = cookie;
u_int row, col, attr;
u_char c;

if (ss == curscr)
return (0);

prevscr = curscr;
curscr = ss;

for (row = 0; row < spx_rows; row++) {
for (col = 0; col < spx_cols; col++) {
u_int idx = row * spx_cols + col;
attr = ss->ss_image[idx].attr;
c = ss->ss_image[idx].data;

/* check if cell requires updating */
if (prevscr == NULL ||
(c != prevscr->ss_image[idx].data) ||
(attr != prevscr->ss_image[idx].attr)) {
if (c < 32)
c = 32;
spx_putchar(ss, row, col, c, attr);
}
}
}

row = ss->ss_cury; col = ss->ss_curx;

spx_cursor(ss, cur_on, row, col);

cur_fg = ss->ss_cur_fg;
cur_bg = ss->ss_cur_bg;

return (0);
}

static int
spx_get_cmap(struct wsdisplay_cmap *p)
{
u_int index = p->index, count = p->count;
int error;

if (index >= (1 << spx_depth) || count > (1 << spx_depth) - index)
return (EINVAL);

error = copyout(&spx_cmap.r[index], p->red, count);
if (error)
return error;

error = copyout(&spx_cmap.g[index], p->green, count);
if (error)
return error;

error = copyout(&spx_cmap.b[index], p->blue, count);
return error;
}

static int
spx_set_cmap(struct wsdisplay_cmap *p)
{
u_int index = p->index, count = p->count;
int error, s;

if (index >= (1 << spx_depth) || count > (1 << spx_depth) - index)
return (EINVAL);

error = copyin(p->red, &spx_cmap.r[index], count);
if (error)
return error;

error = copyin(p->green, &spx_cmap.g[index], count);
if (error)
return error;

error = copyin(p->blue, &spx_cmap.b[index], count);

if (error)
return error;

s = spltty();
while (count-- > 0) {
spx_update_cmap(index,
spx_cmap.r[index],
spx_cmap.g[index],
spx_cmap.b[index]);
index++;
}
splx(s);
return (0);
}

cons_decl(spx);

void
spxcninit(struct consdev *cndev)
{
int i;

spx_blkset(0, 0, spx_xsize, spx_ysize, SPX_BG_COLOR);

curscr = &spx_conscreen;

for (i = 0; i < spx_cols * spx_rows; i++)
spx_conscreen.ss_image[i].attr =
(SPX_BG_COLOR << 4) | SPX_FG_COLOR;
wsdisplay_cnattach(&spx_stdscreen, &spx_conscreen, 0, 0,
(SPX_BG_COLOR << 4) | SPX_FG_COLOR);
cn_tab->cn_pri = CN_INTERNAL;

#if NDZKBD > 0
dzkbd_cnattach(0); /* Connect keyboard and screen together */
#endif
}

/*
* Called very early to setup the glass tty as console.
* Because it's called before the VM system is inited, virtual memory
* for the framebuffer can be stolen directly without disturbing anything.
*/
void
spxcnprobe(struct consdev *cndev)
{
extern const struct cdevsw wsdisplay_cdevsw;

/* Only for VS 4000/90, 90A and 96 with LCSPX or SPXg/gt*/
if ((vax_boardtype != VAX_BTYP_49) ||
((vax_confdata & (CONF_LCSPX | CONF_SPXg)) == 0))
return;

if (((vax_confdata & 8) && (vax_boardtype == VAX_BTYP_49)) ||
(((vax_confdata & KA420_CFG_L3CON) ||
(vax_confdata & KA420_CFG_MULTU)) &&
((vax_boardtype == VAX_BTYP_420) ||
(vax_boardtype == VAX_BTYP_43)))) {
aprint_normal("spxcnprobe: Diagnostic console\n");
return; /* Diagnostic console */
}

spx_init_common(NULL, NULL);

cndev->cn_pri = CN_INTERNAL;
cndev->cn_dev = makedev(cdevsw_lookup_major(&wsdisplay_cdevsw), 0);
}

static int
spx_map_regs(device_t self,
u_int raddr, u_int rsize, u_int r1addr, u_int r1size)
{
extern vaddr_t virtual_avail;

if (!self) {
regaddr = (long*)virtual_avail;
virtual_avail += rsize;
ioaccess((vaddr_t)regaddr, raddr, rsize/VAX_NBPG);

regaddr1 = (long*)virtual_avail;
virtual_avail += r1size;
ioaccess((vaddr_t)regaddr1, r1addr, r1size/VAX_NBPG);

return 1;
}

regaddr = (long*)vax_map_physmem(raddr, rsize/VAX_NBPG);
if (regaddr == 0) {
aprint_error_dev(self,
"unable to allocate register memory (1).\n");
return 0;
}

regaddr1 = (long*)vax_map_physmem(r1addr, r1size/VAX_NBPG);
if (regaddr1 == 0) {
aprint_error_dev(self,
"unable to allocate register memory (2).\n");
return 0;
}

return 1;
}

static int
SPX_map_fb(device_t self, struct vsbus_attach_args *va)
{
int fbsize = (spx_fb_size + FONT_STORAGE_SIZE)/VAX_NBPG;
extern vaddr_t virtual_avail;

if (!self) {
spxaddr = (char *)virtual_avail;
virtual_avail += (spx_fb_size + FONT_STORAGE_SIZE);
ioaccess((vaddr_t)spxaddr, SPX_FB_ADDR, fbsize);

bt_addrl = (char *)virtual_avail;
virtual_avail += VAX_NBPG;
ioaccess((vaddr_t)bt_addrl, SPX_BT459_ADDRL, 1);

bt_addrh = (char *)virtual_avail;
virtual_avail += VAX_NBPG;
ioaccess((vaddr_t)bt_addrh, SPX_BT459_ADDRH, 1);

bt_reg = (char *)virtual_avail;
virtual_avail += VAX_NBPG;
ioaccess((vaddr_t)bt_reg, SPX_BT459_REG, 1);

bt_cmap = (char *)virtual_avail;
virtual_avail += VAX_NBPG;
ioaccess((vaddr_t)bt_cmap, SPX_BT459_CMAP, 1);

return 1;
}

spxaddr = (char *)vax_map_physmem(va->va_paddr, fbsize);
if (spxaddr == 0) {
aprint_error_dev(self, "unable to map framebuffer memory.\n");
return 0;
}

/* map all four RAMDAC registers */
bt_addrl = (char *)vax_map_physmem(SPX_BT459_ADDRL, 1);
if (bt_addrl == 0) {
aprint_error_dev(self,
"unable to map BT459 Low Address register.\n");
return 0;
}

bt_addrh = (char *)vax_map_physmem(SPX_BT459_ADDRH, 1);
if (bt_addrh == 0) {
aprint_error_dev(self,
"unable to map BT459 High Address register.\n");
return 0;
}

bt_reg = (char *)vax_map_physmem(SPX_BT459_REG, 1);
if (bt_reg == 0) {
aprint_error_dev(self,
"unable to map BT459 I/O Register.\n");
return 0;
}

bt_cmap = (char *)vax_map_physmem(SPX_BT459_CMAP, 1);
if (bt_cmap == 0) {
aprint_error_dev(self,
"unable to map BT459 Color Map register.\n");
return 0;
}

return 1;
}

static int
SPXg_map_fb(device_t self, struct vsbus_attach_args *va)
{
int fbsize = SPXg_WIN_SIZE/VAX_NBPG;
extern vaddr_t virtual_avail;

if (!self) {
spxaddr = (char *)virtual_avail;
virtual_avail += SPXg_WIN_SIZE;
ioaccess((vaddr_t)spxaddr, SPXg_FB_ADDR, fbsize);

bt_addrl = (char *)virtual_avail;
virtual_avail += VAX_NBPG;
ioaccess((vaddr_t)bt_addrl, SPXg_BT460_BASE, 1);

bt_addrh = bt_addrl + 0x04;
bt_reg = bt_addrl + 0x08;
bt_cmap = bt_addrl + 0x0c;
bt_wait = bt_addrl + 0x34;

return 1;
}

spxaddr = (char *)vax_map_physmem(va->va_paddr, fbsize);
if (spxaddr == 0) {
aprint_error_dev(self,
"unable to map framebuffer memory window.\n");
return 0;
}

bt_addrl = (char *)vax_map_physmem(SPXg_BT460_BASE, 1);
if (bt_addrl == 0) {
aprint_error_dev(self,
"unable to map BT460 Low Address register.\n");
return 0;
}
bt_addrh = bt_addrl + 0x04;
bt_reg = bt_addrl + 0x08;
bt_cmap = bt_addrl + 0x0c;
bt_wait = bt_addrl + 0x34;

return 1;
}

static void
SPX_render_font(void)
{
volatile char *fontaddr = spxaddr + FONT_STORAGE_START;
int i, j, k, ch, pixel;

for (i = 0; i < 256; i++) for (j = 0; j < spx_font.fontheight; j++) {
ch = QFONT(i, j);

/* regular characters */
pixel = ((i * spx_font.fontheight)+ j) * spx_font.fontwidth;
for (k = 0; k < spx_font.fontwidth; k++)
if (ch & (1 << k))
fontaddr[pixel++] = 0xff;
else
fontaddr[pixel++] = 0x00;

/* underlined characters */
pixel = (((i + 256) * spx_font.fontheight) + j)
* spx_font.fontwidth;
for (k = 0; k < spx_font.fontwidth; k++)
if ((ch & (1 << k)) || (j == (spx_font.fontheight - 1)))
fontaddr[pixel++] = 0xff;
else
fontaddr[pixel++] = 0x00;
}
}

static void
SPXg_render_font(void)
{
int i, j, k, ch, pixel;

for (i = 0; i < 256; i++) for (j = 0; j < spx_font.fontheight; j++) {
ch = QFONT(i, j);
/* regular characters */
for (k = 0; k < spx_font.fontwidth; k++) {
pixel = FONT_STORAGE_START
+ (((i * spx_font.fontheight) + j)
* spx_font.fontwidth) + k;
if ((pixel / SPXg_WIN_LINEAR) != spxg_current_page) {
spxg_switch_page(pixel / SPXg_WIN_LINEAR);
spxg_current_page = (pixel / SPXg_WIN_LINEAR);
}
SPXg_ADDR(pixel) = ch & (1 << k) ? 0xff : 0x00;
spxg_delay();
}

/* underlined characters */
for (k = 0; k < spx_font.fontwidth; k++) {
pixel = FONT_STORAGE_START
+ ((((i + 256) * spx_font.fontheight) + j)
* spx_font.fontwidth) + k;
if ((pixel / SPXg_WIN_LINEAR) != spxg_current_page) {
spxg_switch_page(pixel / SPXg_WIN_LINEAR);
spxg_current_page = (pixel / SPXg_WIN_LINEAR);
}
if ((ch & (1 << k)) || (j == (spx_font.fontheight - 1)))
SPXg_ADDR(pixel) = 0xff;
else
SPXg_ADDR(pixel) = 0x00;
spxg_delay();
}
}
}

static void
spx_init_common(device_t self, struct vsbus_attach_args *va)
{
u_int i, j, k;
int cookie;
struct wsdisplay_font *wf;
static int init_done;

if (init_done)
return;

/* KA49: Identify framebuffer type */
switch (vax_confdata & (CONF_LCSPX | CONF_SPXg)) {
case CONF_LCSPX:
fb_type = FB_IS_SPX;
spx_blkcpy_func = SPX_blkcpy;
spx_blkset_func = SPX_blkset;
spx_putchar_func = SPX_putchar;
break;
case CONF_SPXg:
fb_type = FB_IS_SPXg;
spx_blkcpy_func = SPXg_blkcpy;
spx_blkset_func = SPXg_blkset;
spx_putchar_func = SPXg_putchar;
break;
case CONF_LCSPX | CONF_SPXg:
panic("spxcnprobe: incorrect FB configuration\n");
break;
}

/* map SPX registers first */
if (fb_type == FB_IS_SPX) {
SPX_MAP_REGS(self, SPX);
} else if(fb_type == FB_IS_SPXg) {
SPX_MAP_REGS(self, SPXg);
}

if (fb_type == FB_IS_SPXg)
spxg_switch_page(0);

/* any KA42/43 SPX resolution detection code should be placed here */
spx_depth = 8;
spx_xsize = 1280;
spx_ysize = 1024;

wsfont_init();

cookie = wsfont_find(NULL, 12, 21, 0, WSDISPLAY_FONTORDER_R2L,
WSDISPLAY_FONTORDER_L2R, WSFONT_FIND_BITMAP);
if (cookie == -1)
cookie = wsfont_find(NULL, 16, 0, 0, WSDISPLAY_FONTORDER_R2L, 0,
WSFONT_FIND_BITMAP);
if (cookie == -1)
cookie = wsfont_find(NULL, 12, 0, 0, WSDISPLAY_FONTORDER_R2L, 0,
WSFONT_FIND_BITMAP);
if (cookie == -1)
cookie = wsfont_find(NULL, 8, 0, 0, WSDISPLAY_FONTORDER_R2L, 0,
WSFONT_FIND_BITMAP);
if (cookie == -1)
cookie = wsfont_find(NULL, 0, 0, 0, WSDISPLAY_FONTORDER_R2L,
WSDISPLAY_FONTORDER_L2R, WSFONT_FIND_BITMAP);

if (cookie == -1 || wsfont_lock(cookie, &wf))
panic("spx_common_init: unable to load console font");

spx_font = *wf;

if (self != NULL) {
aprint_normal_dev(self, "Using %s %dx%d font\n", wf->name,
spx_font.fontwidth, spx_font.fontheight);
}

spx_cols = spx_xsize / spx_font.fontwidth;
spx_rows = spx_ysize / spx_font.fontheight;
spx_fb_size = spx_xsize * spx_ysize;
spx_stdscreen.ncols = spx_cols;
spx_stdscreen.nrows = spx_rows;
spx_stdscreen.fontwidth = spx_font.fontwidth;
spx_stdscreen.fontheight = spx_font.fontheight;
snprintf(spx_stdscreen_name, sizeof(spx_stdscreen_name),
"%dx%d", spx_cols, spx_rows);

/* for SPXg spx_fb_size represents FB window size, not FB length */
if (fb_type == FB_IS_SPXg)
spx_fb_size = SPXg_WIN_SIZE;

qf = spx_font.data;
qf2 = (u_short *)spx_font.data;

if (fb_type == FB_IS_SPX) {
SPX_MAP_FB(self, va, SPX);
} else if (fb_type == FB_IS_SPXg) {
SPX_MAP_FB(self, va, SPXg);
}

/* render font glyphs to off-screen memory */
if (fb_type == FB_IS_SPX)
SPX_render_font();
else if (fb_type == FB_IS_SPXg)
SPXg_render_font();

/* set up default console color palette */
for (i = 0; i < 8; i++) {
spx_cmap.r[i] = spx_default_cmap.r[i];
spx_cmap.g[i] = spx_default_cmap.g[i];
spx_cmap.b[i] = spx_default_cmap.b[i];
spx_update_cmap(i, spx_cmap.r[i], spx_cmap.g[i], spx_cmap.b[i]);
}

/*
* Build 64x64 console cursor bitmap based on font dimensions.
* Palette colors are not used, but 4 pixels 2bpp of cursor sprite,
* fg/bg respectively.
*/
for (i = 0; i < 1024; i++)
set_btreg(SPXDAC_REG_CRAM_BASE + i, 0);

/* build cursor line, 1 to 3 pixels high depending on font height */
if (spx_font.fontheight > 26)
i = spx_font.fontheight - 3;
else if (spx_font.fontheight > 16)
i = spx_font.fontheight - 2;
else
i = spx_font.fontheight - 1;

for (; i <= spx_font.fontheight - 1; i++) {
for (j = 0; j < (spx_font.fontwidth >> 2); j++)
set_btreg(SPXDAC_REG_CRAM_BASE + i*16 + j, 0xff);
k = (spx_font.fontwidth & 3) << 1;
set_btreg(SPXDAC_REG_CRAM_BASE + i*16 + j, (1 << k) - 1);
}

if (fb_type == FB_IS_SPX) {
/* set SPX write/read plane masks */
SPX_REG(0x3170) = 0xffffffff;
SPX_REG(0x3174) = 0xffffffff;
}

/* RAMDAC type-specific configuration */
if (fb_type == FB_IS_SPX)
set_btreg(SPXDAC_REG_CMD2, 0xc0);

/* common configuration */
set_btreg(SPXDAC_REG_CMD0, 0x48);
set_btreg(SPXDAC_REG_CMD1, 0x00);
set_btreg(SPXDAC_REG_PRM, 0xff);

set_btreg(SPXDAC_REG_CXLO, 0);
set_btreg(SPXDAC_REG_CXHI, 0);
set_btreg(SPXDAC_REG_CYLO, 0);
set_btreg(SPXDAC_REG_CYHI, 0);

set_btreg(SPXDAC_REG_WXLO, 0);
set_btreg(SPXDAC_REG_WXHI, 0);
set_btreg(SPXDAC_REG_WYLO, 0);
set_btreg(SPXDAC_REG_WYHI, 0);

set_btreg(SPXDAC_REG_WWLO, 0);
set_btreg(SPXDAC_REG_WWHI, 0);
set_btreg(SPXDAC_REG_WHLO, 0);
set_btreg(SPXDAC_REG_WHHI, 0);

init_done = 1;
}