* Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.

/* $NetBSD: tfb.c,v 1.66 2021/12/06 16:00:07 abs Exp $ */

/*-
* Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Tohru Nishimura.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION OR CONTRIBUTORS
* 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: tfb.c,v 1.66 2021/12/06 16:00:07 abs Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/buf.h>
#include <sys/ioctl.h>

#include <sys/bus.h>
#include <sys/intr.h>

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

#include <dev/rasops/rasops.h>
#include <dev/wsfont/wsfont.h>

#include <dev/tc/tcvar.h>
#include <dev/ic/bt463reg.h>
#include <dev/ic/bt431reg.h>

#if defined(pmax)
#define machine_btop(x) mips_btop(MIPS_KSEG1_TO_PHYS(x))
#endif

#if defined(alpha)
#define machine_btop(x) alpha_btop(ALPHA_K0SEG_TO_PHYS(x))
#endif

/*
* struct bt463reg {
* uint8_t bt_lo;
* unsigned : 24;
* uint8_t bt_hi;
* unsigned : 24;
* uint8_t bt_reg;
* unsigned : 24;
* uint8_t bt_cmap;
* };
*
* N.B. a pair of Bt431s are located adjascently.
* struct bt431twin {
* struct {
* uint8_t u0; for sprite mask
* uint8_t u1; for sprite image
* unsigned :16;
* } bt_lo;
* ...
*
* struct bt431reg {
* uint16_t bt_lo;
* unsigned : 16;
* uint16_t bt_hi;
* unsigned : 16;
* uint16_t bt_ram;
* unsigned : 16;
* uint16_t bt_ctl;
* };
*/

/* Bt463 hardware registers, memory-mapped in 32bit stride */
#define bt_lo 0x0
#define bt_hi 0x4
#define bt_reg 0x8
#define bt_cmap 0xc

/* Bt431 hardware registers, memory-mapped in 32bit stride */
#define bt_ram 0x8
#define bt_ctl 0xc

#define REGWRITE32(p,i,v) do { \
*(volatile uint32_t *)((p) + (i)) = (v); tc_wmb(); \
} while (0)

#define SELECT463(p,r) do { \
REGWRITE32((p), bt_lo, 0xff & (r)); \
REGWRITE32((p), bt_hi, 0xff & ((r)>>8)); \
} while (0)

#define TWIN(x) ((x) | ((x) << 8))
#define TWIN_LO(x) (twin = (x) & 0x00ff, (twin << 8) | twin)
#define TWIN_HI(x) (twin = (x) & 0xff00, twin | (twin >> 8))

#define SELECT431(p,r) do { \
REGWRITE32((p), bt_lo, TWIN(r)); \
REGWRITE32((p), bt_hi, 0); \
} while (0)

struct hwcmap256 {
#define CMAP_SIZE 256 /* R/G/B entries */
uint8_t r[CMAP_SIZE];
uint8_t g[CMAP_SIZE];
uint8_t b[CMAP_SIZE];
};

struct hwcursor64 {
struct wsdisplay_curpos cc_pos;
struct wsdisplay_curpos cc_hot;
struct wsdisplay_curpos cc_size;
struct wsdisplay_curpos cc_magic;
#define CURSOR_MAX_SIZE 64
uint8_t cc_color[6];
uint64_t cc_image[CURSOR_MAX_SIZE];
uint64_t cc_mask[CURSOR_MAX_SIZE];
};

struct tfb_softc {
vaddr_t sc_vaddr;
size_t sc_size;
struct rasops_info *sc_ri;
struct hwcmap256 sc_cmap; /* software copy of colormap */
struct hwcursor64 sc_cursor; /* software copy of cursor */
int sc_blanked; /* video visibility disabled */
int sc_curenb; /* cursor sprite enabled */
int sc_changed; /* need update of hardware */
#define WSDISPLAY_CMAP_DOLUT 0x20
int nscreens;
};

#define TX_MAGIC_X 360
#define TX_MAGIC_Y 36

#define TX_BT463_OFFSET 0x040000
#define TX_BT431_OFFSET 0x040010
#define TX_CONTROL 0x040030
#define TX_MAP_REGISTER 0x040030
#define TX_PIP_OFFSET 0x0800c0
#define TX_SELECTION 0x100000
#define TX_8BPP_OFFSET 0x200000
#define TX_8BPP_SIZE 0x200000
#define TX_24BPP_OFFSET 0x400000
#define TX_24BPP_SIZE 0x600000
#define TX_VIDEO_ENABLE 0xa00000

#define TX_CTL_VIDEO_ON 0x80
#define TX_CTL_INT_ENA 0x40
#define TX_CTL_INT_PEND 0x20
#define TX_CTL_SEG_ENA 0x10
#define TX_CTL_SEG 0x0f

static int tfbmatch(device_t, cfdata_t, void *);
static void tfbattach(device_t, device_t, void *);

CFATTACH_DECL_NEW(tfb, sizeof(struct tfb_softc),
tfbmatch, tfbattach, NULL, NULL);

static void tfb_common_init(struct rasops_info *);
static void tfb_cmap_init(struct tfb_softc *);
static struct rasops_info tfb_console_ri;
static tc_addr_t tfb_consaddr;

static struct wsscreen_descr tfb_stdscreen = {
"std", 0, 0,
0, /* textops */
0, 0,
WSSCREEN_REVERSE
};

static const struct wsscreen_descr *_tfb_scrlist[] = {
&tfb_stdscreen,
};

static const struct wsscreen_list tfb_screenlist = {
sizeof(_tfb_scrlist) / sizeof(struct wsscreen_descr *), _tfb_scrlist
};

static int tfbioctl(void *, void *, u_long, void *, int, struct lwp *);
static paddr_t tfbmmap(void *, void *, off_t, int);

static int tfb_alloc_screen(void *, const struct wsscreen_descr *,
void **, int *, int *, long *);
static void tfb_free_screen(void *, void *);
static int tfb_show_screen(void *, void *, int,
void (*) (void *, int, int), void *);

static const struct wsdisplay_accessops tfb_accessops = {
tfbioctl,
tfbmmap,
tfb_alloc_screen,
tfb_free_screen,
tfb_show_screen,
0 /* load_font */
};

int tfb_cnattach(tc_addr_t);
static int tfbintr(void *);
static void tfbhwinit(void *);

static int get_cmap(struct tfb_softc *, struct wsdisplay_cmap *);
static int set_cmap(struct tfb_softc *, struct wsdisplay_cmap *);
static int set_cursor(struct tfb_softc *, struct wsdisplay_cursor *);
static int get_cursor(struct tfb_softc *, struct wsdisplay_cursor *);
static void set_curpos(struct tfb_softc *, struct wsdisplay_curpos *);

/* bit order reverse */
static const uint8_t flip[256] = {
0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0,
0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0,
0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8,
0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8,
0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4,
0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4,
0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec,
0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc,
0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2,
0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2,
0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea,
0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa,
0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6,
0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6,
0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee,
0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe,
0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1,
0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1,
0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9,
0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9,
0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5,
0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5,
0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed,
0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd,
0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3,
0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3,
0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb,
0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb,
0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7,
0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7,
0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef,
0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff,
};

static int
tfbmatch(device_t parent, cfdata_t match, void *aux)
{
struct tc_attach_args *ta = aux;

if (strncmp("PMAG-RO ", ta->ta_modname, TC_ROM_LLEN) != 0
&& strncmp("PMAG-JA ", ta->ta_modname, TC_ROM_LLEN) != 0)
return (0);

return (1);
}

static void
tfbattach(device_t parent, device_t self, void *aux)
{
struct tfb_softc *sc = device_private(self);
struct tc_attach_args *ta = aux;
struct rasops_info *ri;
struct wsemuldisplaydev_attach_args waa;
int console;

console = (ta->ta_addr == tfb_consaddr);
if (console) {
sc->sc_ri = ri = &tfb_console_ri;
ri->ri_flg &= ~RI_NO_AUTO;
sc->nscreens = 1;
}
else {
ri = malloc(sizeof(struct rasops_info),
M_DEVBUF, M_WAITOK | M_ZERO);
ri->ri_hw = (void *)ta->ta_addr;
tfb_common_init(ri);
sc->sc_ri = ri;
}
printf(": %dx%d, 8,24bpp\n", ri->ri_width, ri->ri_height);

tfb_cmap_init(sc);

sc->sc_vaddr = ta->ta_addr;
sc->sc_cursor.cc_magic.x = TX_MAGIC_X;
sc->sc_cursor.cc_magic.y = TX_MAGIC_Y;
sc->sc_blanked = sc->sc_curenb = 0;

tc_intr_establish(parent, ta->ta_cookie, IPL_TTY, tfbintr, sc);

*(uint8_t *)((char *)ri->ri_hw + TX_CONTROL) &= ~0x40;
*(uint8_t *)((char *)ri->ri_hw + TX_CONTROL) |= 0x40;

waa.console = console;
waa.scrdata = &tfb_screenlist;
waa.accessops = &tfb_accessops;
waa.accesscookie = sc;

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

static void
tfb_common_init(struct rasops_info *ri)
{
char *base;
int cookie;

base = (void *)ri->ri_hw;

/* initialize colormap and cursor hardware */
tfbhwinit(base);

ri->ri_flg = RI_CENTER;
if (ri == &tfb_console_ri)
ri->ri_flg |= RI_NO_AUTO;
ri->ri_depth = 8;
ri->ri_width = 1280;
ri->ri_height = 1024;
ri->ri_stride = 1280;
ri->ri_bits = base + TX_8BPP_OFFSET;

/* clear the screen */
memset(ri->ri_bits, 0, ri->ri_stride * ri->ri_height);

wsfont_init();
/* prefer 12 pixel wide font */
cookie = wsfont_find(NULL, 12, 0, 0, WSDISPLAY_FONTORDER_L2R,
WSDISPLAY_FONTORDER_L2R, WSFONT_FIND_BITMAP);
if (cookie <= 0)
cookie = wsfont_find(NULL, 0, 0, 0, WSDISPLAY_FONTORDER_L2R,
WSDISPLAY_FONTORDER_L2R, WSFONT_FIND_BITMAP);
if (cookie <= 0) {
printf("tfb: font table is empty\n");
return;
}

if (wsfont_lock(cookie, &ri->ri_font)) {
printf("tfb: couldn't lock font\n");
return;
}
ri->ri_wsfcookie = cookie;

rasops_init(ri, 34, 80);

/* XXX shouldn't be global */
tfb_stdscreen.nrows = ri->ri_rows;
tfb_stdscreen.ncols = ri->ri_cols;
tfb_stdscreen.textops = &ri->ri_ops;
tfb_stdscreen.capabilities = ri->ri_caps;
}

static void
tfb_cmap_init(struct tfb_softc *sc)
{
struct hwcmap256 *cm;
const uint8_t *p;
int index;

cm = &sc->sc_cmap;
p = rasops_cmap;
for (index = 0; index < CMAP_SIZE; index++, p += 3) {
cm->r[index] = p[0];
cm->g[index] = p[1];
cm->b[index] = p[2];
}
}

static int
tfbioctl(void *v, void *vs, u_long cmd, void *data, int flag, struct lwp *l)
{
struct tfb_softc *sc = v;
struct rasops_info *ri = sc->sc_ri;
int turnoff, s;

switch (cmd) {
case WSDISPLAYIO_GTYPE:
*(u_int *)data = WSDISPLAY_TYPE_TX;
return (0);

case WSDISPLAYIO_GET_FBINFO: {
struct wsdisplayio_fbinfo *fbi = data;
return wsdisplayio_get_fbinfo(sc->sc_ri, fbi);
}

case WSDISPLAYIO_GINFO:
#define wsd_fbip ((struct wsdisplay_fbinfo *)data)
wsd_fbip->height = ri->ri_height;
wsd_fbip->width = ri->ri_width;
wsd_fbip->depth = ri->ri_depth;
wsd_fbip->cmsize = CMAP_SIZE;
#undef fbt
return (0);

case WSDISPLAYIO_GETCMAP:
return get_cmap(sc, (struct wsdisplay_cmap *)data);

case WSDISPLAYIO_PUTCMAP:
return set_cmap(sc, (struct wsdisplay_cmap *)data);

case WSDISPLAYIO_SVIDEO:
turnoff = *(int *)data == WSDISPLAYIO_VIDEO_OFF;
if (sc->sc_blanked != turnoff) {
sc->sc_blanked = turnoff;
#if 0 /* XXX later XXX */
To turn off;
- clear the MSB of TX control register; &= ~0x80,
- assign Bt431 register #0 with value 0x4 to hide sprite cursor.
#endif /* XXX XXX XXX */
}
return (0);

case WSDISPLAYIO_GVIDEO:
*(u_int *)data = sc->sc_blanked ?
WSDISPLAYIO_VIDEO_OFF : WSDISPLAYIO_VIDEO_ON;
return (0);

case WSDISPLAYIO_GCURPOS:
*(struct wsdisplay_curpos *)data = sc->sc_cursor.cc_pos;
return (0);

case WSDISPLAYIO_SCURPOS:
s = spltty();
set_curpos(sc, (struct wsdisplay_curpos *)data);
sc->sc_changed |= WSDISPLAY_CURSOR_DOPOS;
splx(s);
return (0);

case WSDISPLAYIO_GCURMAX:
((struct wsdisplay_curpos *)data)->x =
((struct wsdisplay_curpos *)data)->y = CURSOR_MAX_SIZE;
return (0);

case WSDISPLAYIO_GCURSOR:
return get_cursor(sc, (struct wsdisplay_cursor *)data);

case WSDISPLAYIO_SCURSOR:
return set_cursor(sc, (struct wsdisplay_cursor *)data);

case WSDISPLAYIO_SMODE:
if (*(int *)data == WSDISPLAYIO_MODE_EMUL) {
s = spltty();
tfb_cmap_init(sc);
sc->sc_curenb = 0;
sc->sc_blanked = 0;
sc->sc_changed |= (WSDISPLAY_CURSOR_DOCUR |
WSDISPLAY_CMAP_DOLUT);
splx(s);
}
return (0);
}
return (EPASSTHROUGH);
}

static paddr_t
tfbmmap(void *v, void *vs, off_t offset, int prot)
{
struct tfb_softc *sc = v;

if (offset >= TX_8BPP_SIZE || offset < 0) /* XXX 24bpp XXX */
return (-1);
return machine_btop(sc->sc_vaddr + TX_8BPP_OFFSET + offset);
}

static int
tfb_alloc_screen(void *v, const struct wsscreen_descr *type, void **cookiep,
int *curxp, int *curyp, long *attrp)
{
struct tfb_softc *sc = v;
struct rasops_info *ri = sc->sc_ri;
long defattr;

if (sc->nscreens > 0)
return (ENOMEM);

*cookiep = ri; /* one and only for now */
*curxp = 0;
*curyp = 0;
(*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr);
*attrp = defattr;
sc->nscreens++;
return (0);
}

static void
tfb_free_screen(void *v, void *cookie)
{
struct tfb_softc *sc = v;

if (sc->sc_ri == &tfb_console_ri)
panic("tfb_free_screen: console");

sc->nscreens--;
}

static int
tfb_show_screen(void *v, void *cookie, int waitok,
void (*cb)(void *, int, int), void *cbarg)
{

return (0);
}

/* EXPORT */ int
tfb_cnattach(tc_addr_t addr)
{
struct rasops_info *ri;
long defattr;

ri = &tfb_console_ri;
ri->ri_hw = (void *)addr;
tfb_common_init(ri);
(*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr);
wsdisplay_cnattach(&tfb_stdscreen, ri, 0, 0, defattr);
tfb_consaddr = addr;
return (0);
}

static int
tfbintr(void *arg)
{
struct tfb_softc *sc = arg;
char *base, *vdac, *curs;
int v;

base = (void *)sc->sc_ri->ri_hw;
*(uint8_t *)(base + TX_CONTROL) &= ~0x40;
if (sc->sc_changed == 0)
goto done;

vdac = base + TX_BT463_OFFSET;
curs = base + TX_BT431_OFFSET;
v = sc->sc_changed;
if (v & WSDISPLAY_CURSOR_DOCUR) {
int onoff;

onoff = (sc->sc_curenb) ? 0x4444 : 0x0404;
SELECT431(curs, BT431_REG_COMMAND);
REGWRITE32(curs, bt_ctl, onoff);
}
if (v & (WSDISPLAY_CURSOR_DOPOS | WSDISPLAY_CURSOR_DOHOT)) {
int x, y;
uint32_t twin;

x = sc->sc_cursor.cc_pos.x - sc->sc_cursor.cc_hot.x;
y = sc->sc_cursor.cc_pos.y - sc->sc_cursor.cc_hot.y;

x += sc->sc_cursor.cc_magic.x;
y += sc->sc_cursor.cc_magic.y;

SELECT431(curs, BT431_REG_CURSOR_X_LOW);
REGWRITE32(curs, bt_ctl, TWIN_LO(x));
REGWRITE32(curs, bt_ctl, TWIN_HI(x));
REGWRITE32(curs, bt_ctl, TWIN_LO(y));
REGWRITE32(curs, bt_ctl, TWIN_HI(y));
}
if (v & WSDISPLAY_CURSOR_DOCMAP) {
uint8_t *cp = sc->sc_cursor.cc_color;

SELECT463(vdac, BT463_IREG_CURSOR_COLOR_0);
REGWRITE32(vdac, bt_reg, cp[1]);
REGWRITE32(vdac, bt_reg, cp[3]);
REGWRITE32(vdac, bt_reg, cp[5]);

REGWRITE32(vdac, bt_reg, cp[0]);
REGWRITE32(vdac, bt_reg, cp[2]);
REGWRITE32(vdac, bt_reg, cp[4]);

REGWRITE32(vdac, bt_reg, cp[1]);
REGWRITE32(vdac, bt_reg, cp[3]);
REGWRITE32(vdac, bt_reg, cp[5]);

REGWRITE32(vdac, bt_reg, cp[1]);
REGWRITE32(vdac, bt_reg, cp[3]);
REGWRITE32(vdac, bt_reg, cp[5]);
}
if (v & WSDISPLAY_CURSOR_DOSHAPE) {
uint8_t *ip, *mp, img, msk;
int bcnt;

ip = (uint8_t *)sc->sc_cursor.cc_image;
mp = (uint8_t *)sc->sc_cursor.cc_mask;
bcnt = 0;
SELECT431(curs, BT431_REG_CRAM_BASE);

/* 64 pixel scan line is consisted with 16 byte cursor ram */
while (bcnt < sc->sc_cursor.cc_size.y * 16) {
/* pad right half 32 pixel when smaller than 33 */
if ((bcnt & 0x8) && sc->sc_cursor.cc_size.x < 33) {
REGWRITE32(curs, bt_ram, 0);
}
else {
int half;
img = *ip++;
msk = *mp++;
img &= msk; /* cookie off image */
half = (flip[img] << 8) | flip[msk];
REGWRITE32(curs, bt_ram, half);
}
bcnt += 2;
}
/* pad unoccupied scan lines */
while (bcnt < CURSOR_MAX_SIZE * 16) {
REGWRITE32(curs, bt_ram, 0);
bcnt += 2;
}
}
if (v & WSDISPLAY_CMAP_DOLUT) {
struct hwcmap256 *cm = &sc->sc_cmap;
int index;

SELECT463(vdac, BT463_IREG_CPALETTE_RAM);
for (index = 0; index < CMAP_SIZE; index++) {
REGWRITE32(vdac, bt_cmap, cm->r[index]);
REGWRITE32(vdac, bt_cmap, cm->g[index]);
REGWRITE32(vdac, bt_cmap, cm->b[index]);
}
}
sc->sc_changed = 0;
done:
*(uint8_t *)(base + TX_CONTROL) &= ~0x40; /* !? Eeeh !? */
*(uint8_t *)(base + TX_CONTROL) |= 0x40;
return (1);
}

static void
tfbhwinit(void *tfbbase)
{
char *vdac, *curs;
const uint8_t *p;
int i;

vdac = (char *)tfbbase + TX_BT463_OFFSET;
curs = (char *)tfbbase + TX_BT431_OFFSET;
SELECT463(vdac, BT463_IREG_COMMAND_0);
REGWRITE32(vdac, bt_reg, 0x40); /* CMD 0 */
REGWRITE32(vdac, bt_reg, 0x46); /* CMD 1 */
REGWRITE32(vdac, bt_reg, 0xc0); /* CMD 2 */
REGWRITE32(vdac, bt_reg, 0); /* !? 204 !? */
REGWRITE32(vdac, bt_reg, 0xff); /* plane 0:7 */
REGWRITE32(vdac, bt_reg, 0xff); /* plane 8:15 */
REGWRITE32(vdac, bt_reg, 0xff); /* plane 16:23 */
REGWRITE32(vdac, bt_reg, 0xff); /* plane 24:27 */
REGWRITE32(vdac, bt_reg, 0x00); /* blink 0:7 */
REGWRITE32(vdac, bt_reg, 0x00); /* blink 8:15 */
REGWRITE32(vdac, bt_reg, 0x00); /* blink 16:23 */
REGWRITE32(vdac, bt_reg, 0x00); /* blink 24:27 */
REGWRITE32(vdac, bt_reg, 0x00);

#if 0 /* XXX ULTRIX does initialize 16 entry window type here XXX */
{
static uint32_t windowtype[BT463_IREG_WINDOW_TYPE_TABLE] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
};

SELECT463(vdac, BT463_IREG_WINDOW_TYPE_TABLE);
for (i = 0; i < BT463_NWTYPE_ENTRIES; i++) {
BYTE(vdac, bt_reg) = windowtype[i]; /* 0:7 */
BYTE(vdac, bt_reg) = windowtype[i] >> 8; /* 8:15 */
BYTE(vdac, bt_reg) = windowtype[i] >> 16; /* 16:23 */
}
}
#endif

SELECT463(vdac, BT463_IREG_CPALETTE_RAM);
p = rasops_cmap;
for (i = 0; i < 256; i++, p += 3) {
REGWRITE32(vdac, bt_cmap, p[0]);
REGWRITE32(vdac, bt_cmap, p[1]);
REGWRITE32(vdac, bt_cmap, p[2]);
}

/* !? Eeeh !? */
SELECT463(vdac, 0x0100 /* BT463_IREG_CURSOR_COLOR_0 */);
for (i = 0; i < 256; i++) {
REGWRITE32(vdac, bt_cmap, i);
REGWRITE32(vdac, bt_cmap, i);
REGWRITE32(vdac, bt_cmap, i);
}

SELECT431(curs, BT431_REG_COMMAND);
REGWRITE32(curs, bt_ctl, 0x0404);
REGWRITE32(curs, bt_ctl, 0); /* XLO */
REGWRITE32(curs, bt_ctl, 0); /* XHI */
REGWRITE32(curs, bt_ctl, 0); /* YLO */
REGWRITE32(curs, bt_ctl, 0); /* YHI */
REGWRITE32(curs, bt_ctl, 0); /* XWLO */
REGWRITE32(curs, bt_ctl, 0); /* XWHI */
REGWRITE32(curs, bt_ctl, 0); /* WYLO */
REGWRITE32(curs, bt_ctl, 0); /* WYLO */
REGWRITE32(curs, bt_ctl, 0); /* WWLO */
REGWRITE32(curs, bt_ctl, 0); /* WWHI */
REGWRITE32(curs, bt_ctl, 0); /* WHLO */
REGWRITE32(curs, bt_ctl, 0); /* WHHI */

SELECT431(curs, BT431_REG_CRAM_BASE);
for (i = 0; i < 512; i++) {
REGWRITE32(curs, bt_ram, 0);
}
}

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

if (index >= CMAP_SIZE || count > CMAP_SIZE - index)
return (EINVAL);

error = copyout(&sc->sc_cmap.r[index], p->red, count);
if (error)
return error;
error = copyout(&sc->sc_cmap.g[index], p->green, count);
if (error)
return error;
error = copyout(&sc->sc_cmap.b[index], p->blue, count);
return error;
}

static int
set_cmap(struct tfb_softc *sc, struct wsdisplay_cmap *p)
{
struct hwcmap256 cmap;
u_int index = p->index, count = p->count;
int error, s;

if (index >= CMAP_SIZE || count > CMAP_SIZE - index)
return (EINVAL);

error = copyin(p->red, &cmap.r[index], count);
if (error)
return error;
error = copyin(p->green, &cmap.g[index], count);
if (error)
return error;
error = copyin(p->blue, &cmap.b[index], count);
if (error)
return error;
s = spltty();
memcpy(&sc->sc_cmap.r[index], &cmap.r[index], count);
memcpy(&sc->sc_cmap.g[index], &cmap.g[index], count);
memcpy(&sc->sc_cmap.b[index], &cmap.b[index], count);
sc->sc_changed |= WSDISPLAY_CMAP_DOLUT;
splx(s);
return (0);
}

static int
set_cursor(struct tfb_softc *sc, struct wsdisplay_cursor *p)
{
#define cc (&sc->sc_cursor)
u_int v, index = 0, count = 0, icount = 0;
uint8_t r[2], g[2], b[2], image[512], mask[512];
int error, s;

v = p->which;
if (v & WSDISPLAY_CURSOR_DOCMAP) {
index = p->cmap.index;
count = p->cmap.count;
if (index >= 2 || count > 2 - index)
return (EINVAL);
error = copyin(p->cmap.red, &r[index], count);
if (error)
return error;
error = copyin(p->cmap.green, &g[index], count);
if (error)
return error;
error = copyin(p->cmap.blue, &b[index], count);
if (error)
return error;
}
if (v & WSDISPLAY_CURSOR_DOSHAPE) {
if (p->size.x > CURSOR_MAX_SIZE || p->size.y > CURSOR_MAX_SIZE)
return (EINVAL);
icount = ((p->size.x < 33) ? 4 : 8) * p->size.y;
error = copyin(p->image, image, icount);
if (error)
return error;
error = copyin(p->mask, mask, icount);
if (error)
return error;
}

s = spltty();
if (v & WSDISPLAY_CURSOR_DOCUR)
sc->sc_curenb = p->enable;
if (v & WSDISPLAY_CURSOR_DOPOS)
set_curpos(sc, &p->pos);
if (v & WSDISPLAY_CURSOR_DOHOT)
cc->cc_hot = p->hot;
if (v & WSDISPLAY_CURSOR_DOCMAP) {
memcpy(&cc->cc_color[index], &r[index], count);
memcpy(&cc->cc_color[index + 2], &g[index], count);
memcpy(&cc->cc_color[index + 4], &b[index], count);
}
if (v & WSDISPLAY_CURSOR_DOSHAPE) {
cc->cc_size = p->size;
memset(cc->cc_image, 0, sizeof cc->cc_image);
memcpy(cc->cc_image, image, icount);
memset(cc->cc_mask, 0, sizeof cc->cc_mask);
memcpy(cc->cc_mask, mask, icount);
}
sc->sc_changed |= v;
splx(s);

return (0);
#undef cc
}

static int
get_cursor(struct tfb_softc *sc, struct wsdisplay_cursor *p)
{
return (EPASSTHROUGH); /* XXX */
}

static void
set_curpos(struct tfb_softc *sc, struct wsdisplay_curpos *curpos)
{
struct rasops_info *ri = sc->sc_ri;
int x = curpos->x, y = curpos->y;

if (y < 0)
y = 0;
else if (y > ri->ri_height)
y = ri->ri_height;
if (x < 0)
x = 0;
else if (x > ri->ri_width)
x = ri->ri_width;
sc->sc_cursor.cc_pos.x = x;
sc->sc_cursor.cc_pos.y = y;
}