* Copyright (c) 1999

/* $NetBSD: hpcfb.c,v 1.66 2024/02/29 22:01:57 andvar Exp $ */

/*-
* Copyright (c) 1999
* Shin Takemura and PocketBSD Project. All rights reserved.
* Copyright (c) 2000,2001
* SATO Kazumi. All rights reserved.
*
* 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 following acknowledgement:
* This product includes software developed by the PocketBSD project
* and its contributors.
* 4. Neither the name of the project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*
*/

/*
* jump scroll, scroll thread, multiscreen, virtual text vram
* and hpcfb_emulops functions
* written by SATO Kazumi.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: hpcfb.c,v 1.66 2024/02/29 22:01:57 andvar Exp $");

#ifdef _KERNEL_OPT
#include "opt_hpcfb.h"
#endif

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/signalvar.h>
#include <sys/proc.h>
#include <sys/kthread.h>
#include <sys/device.h>
#include <sys/conf.h>
#include <sys/malloc.h>
#include <sys/buf.h>
#include <sys/ioctl.h>

#include <sys/bus.h>

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

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

#include <dev/hpc/hpcfbvar.h>
#include <dev/hpc/hpcfbio.h>

#include "bivideo.h"
#if NBIVIDEO > 0
#include <dev/hpc/bivideovar.h>
#endif

#ifdef FBDEBUG
int hpcfb_debug = 0;
#define DPRINTF(arg) if (hpcfb_debug) printf arg
#else
#define DPRINTF(arg) do {} while (/* CONSTCOND */ 0)
#endif

#ifndef HPCFB_MAX_COLUMN
#define HPCFB_MAX_COLUMN 130
#endif /* HPCFB_MAX_COLUMN */
#ifndef HPCFB_MAX_ROW
#define HPCFB_MAX_ROW 80
#endif /* HPCFB_MAX_ROW */

/*
* currently experimental
#define HPCFB_JUMP
*/

struct hpcfb_vchar {
u_int c;
long attr;
};

struct hpcfb_tvrow {
int maxcol;
int spacecol;
struct hpcfb_vchar col[HPCFB_MAX_COLUMN];
};

struct hpcfb_devconfig {
struct rasops_info dc_rinfo; /* rasops information */

int dc_blanked; /* currently had video disabled */
struct hpcfb_softc *dc_sc;
int dc_rows;
int dc_cols;
struct hpcfb_tvrow *dc_tvram;
int dc_curx;
int dc_cury;
#ifdef HPCFB_JUMP
int dc_min_row;
int dc_max_row;
int dc_scroll;
struct callout dc_scroll_ch;
int dc_scroll_src;
int dc_scroll_dst;
int dc_scroll_num;
#endif /* HPCFB_JUMP */
volatile int dc_state;
#define HPCFB_DC_CURRENT 0x80000000
#define HPCFB_DC_DRAWING 0x01 /* drawing raster ops */
#define HPCFB_DC_TDRAWING 0x02 /* drawing tvram */
#define HPCFB_DC_SCROLLPENDING 0x04 /* scroll is pending */
#define HPCFB_DC_UPDATE 0x08 /* tvram update */
#define HPCFB_DC_SCRDELAY 0x10 /* scroll time but delay it */
#define HPCFB_DC_SCRTHREAD 0x20 /* in scroll thread or callout */
#define HPCFB_DC_UPDATEALL 0x40 /* need to redraw all */
#define HPCFB_DC_ABORT 0x80 /* abort redrawing */
#define HPCFB_DC_SWITCHREQ 0x100 /* switch request exist */
int dc_memsize;
u_char *dc_fbaddr;
};

#define IS_DRAWABLE(dc) \
(((dc)->dc_state&HPCFB_DC_CURRENT)&& \
(((dc)->dc_state&(HPCFB_DC_DRAWING|HPCFB_DC_SWITCHREQ)) == 0))

#define HPCFB_MAX_SCREEN 5
#define HPCFB_MAX_JUMP 5

struct hpcfb_softc {
device_t sc_dev;
struct hpcfb_devconfig *sc_dc; /* device configuration */
const struct hpcfb_accessops *sc_accessops;
void *sc_accessctx;
device_t sc_wsdisplay;
int sc_screen_resumed;
int sc_polling;
int sc_mapping;
struct proc *sc_thread;
void *sc_wantedscreen;
void (*sc_switchcb)(void *, int, int);
void *sc_switchcbarg;
struct callout sc_switch_callout;
int sc_nfbconf;
struct hpcfb_fbconf *sc_fbconflist;
};

/*
* function prototypes
*/
int hpcfbmatch(device_t, cfdata_t, void *);
void hpcfbattach(device_t, device_t, void *);
int hpcfbprint(void *, const char *);

int hpcfb_ioctl(void *, void *, u_long, void *, int, struct lwp *);
paddr_t hpcfb_mmap(void *, void *, off_t, int);

void hpcfb_refresh_screen(struct hpcfb_softc *);
void hpcfb_doswitch(struct hpcfb_softc *);

#ifdef HPCFB_JUMP
static void hpcfb_thread(void *);
#endif /* HPCFB_JUMP */

static int hpcfb_init(struct hpcfb_fbconf *, struct hpcfb_devconfig *);
static int hpcfb_alloc_screen(void *, const struct wsscreen_descr *,
void **, int *, int *, long *);
static void hpcfb_free_screen(void *, void *);
static int hpcfb_show_screen(void *, void *, int,
void (*) (void *, int, int), void *);
static void hpcfb_pollc(void *, int);
static void hpcfb_cmap_reorder(struct hpcfb_fbconf *,
struct hpcfb_devconfig *);

static void hpcfb_power(int, void *);
static bool hpcfb_suspend(device_t, const pmf_qual_t *);
static bool hpcfb_resume(device_t, const pmf_qual_t *);

void hpcfb_cursor(void *, int, int, int);
int hpcfb_mapchar(void *, int, unsigned int *);
void hpcfb_putchar(void *, int, int, u_int, long);
void hpcfb_copycols(void *, int, int, int, int);
void hpcfb_erasecols(void *, int, int, int, long);
void hpcfb_redraw(void *, int, int, int);
void hpcfb_copyrows(void *, int, int, int);
void hpcfb_eraserows(void *, int, int, long);
int hpcfb_allocattr(void *, int, int, int, long *);
void hpcfb_cursor_raw(void *, int, int, int);

#ifdef HPCFB_JUMP
void hpcfb_update(void *);
void hpcfb_do_scroll(void *);
void hpcfb_check_update(void *);
#endif /* HPCFB_JUMP */

struct wsdisplay_emulops hpcfb_emulops = {
.cursor = hpcfb_cursor,
.mapchar = hpcfb_mapchar,
.putchar = hpcfb_putchar,
.copycols = hpcfb_copycols,
.erasecols = hpcfb_erasecols,
.copyrows = hpcfb_copyrows,
.eraserows = hpcfb_eraserows,
.allocattr = hpcfb_allocattr,
.replaceattr = NULL,
};

/*
* static variables
*/
CFATTACH_DECL_NEW(hpcfb, sizeof(struct hpcfb_softc),
hpcfbmatch, hpcfbattach, NULL, NULL);

struct wsscreen_descr hpcfb_stdscreen = {
.name = "std",
.textops = &hpcfb_emulops, /* XXX */
.capabilities = WSSCREEN_REVERSE,
/* XXX: ncols/nrows will be filled in -- shouldn't, they are global */
};

const struct wsscreen_descr *_hpcfb_scrlist[] = {
&hpcfb_stdscreen,
/* XXX other formats, graphics screen? */
};

struct wsscreen_list hpcfb_screenlist = {
.nscreens = __arraycount(_hpcfb_scrlist),
.screens = _hpcfb_scrlist,
};

struct wsdisplay_accessops hpcfb_accessops = {
.ioctl = hpcfb_ioctl,
.mmap = hpcfb_mmap,
.alloc_screen = hpcfb_alloc_screen,
.free_screen = hpcfb_free_screen,
.show_screen = hpcfb_show_screen,
.load_font = NULL,
.pollc = hpcfb_pollc,
.scroll = NULL,
};

void hpcfb_tv_putchar(struct hpcfb_devconfig *, int, int, u_int, long);
void hpcfb_tv_copycols(struct hpcfb_devconfig *, int, int, int, int);
void hpcfb_tv_erasecols(struct hpcfb_devconfig *, int, int, int, long);
void hpcfb_tv_copyrows(struct hpcfb_devconfig *, int, int, int);
void hpcfb_tv_eraserows(struct hpcfb_devconfig *, int, int, long);

struct wsdisplay_emulops rasops_emul;

static int hpcfbconsole;
struct hpcfb_devconfig hpcfb_console_dc;
struct wsscreen_descr hpcfb_console_wsscreen;
struct hpcfb_tvrow hpcfb_console_tvram[HPCFB_MAX_ROW];

/*
* function bodies
*/

int
hpcfbmatch(device_t parent, cfdata_t match, void *aux)
{
return (1);
}

void
hpcfbattach(device_t parent, device_t self, void *aux)
{
struct hpcfb_softc *sc;
struct hpcfb_attach_args *ha = aux;
struct wsemuldisplaydev_attach_args wa;

sc = device_private(self);
sc->sc_dev = self;

sc->sc_accessops = ha->ha_accessops;
sc->sc_accessctx = ha->ha_accessctx;
sc->sc_nfbconf = ha->ha_nfbconf;
sc->sc_fbconflist = ha->ha_fbconflist;

if (hpcfbconsole) {
sc->sc_dc = &hpcfb_console_dc;
sc->sc_dc->dc_rinfo.ri_flg &= ~RI_NO_AUTO;
hpcfb_console_dc.dc_sc = sc;
printf(": %dx%d pixels, %d colors, %dx%d chars",
sc->sc_dc->dc_rinfo.ri_width,sc->sc_dc->dc_rinfo.ri_height,
(1 << sc->sc_dc->dc_rinfo.ri_depth),
sc->sc_dc->dc_rinfo.ri_cols,sc->sc_dc->dc_rinfo.ri_rows);
/* Set video chip dependent CLUT if any. */
if (sc->sc_accessops->setclut)
sc->sc_accessops->setclut(sc->sc_accessctx,
&hpcfb_console_dc.dc_rinfo);
}
printf("\n");

sc->sc_polling = 0; /* XXX */
sc->sc_mapping = 0; /* XXX */
callout_init(&sc->sc_switch_callout, 0);

wa.console = hpcfbconsole;
wa.scrdata = &hpcfb_screenlist;
wa.accessops = &hpcfb_accessops;
wa.accesscookie = sc;

sc->sc_wsdisplay = config_found(self, &wa, wsemuldisplaydevprint,
CFARGS_NONE);

#ifdef HPCFB_JUMP
/*
* Create a kernel thread to scroll,
*/
if (kthread_create(PRI_NONE, 0, NULL, hpcfb_thread, sc,
&sc->sc_thread, "%s", device_xname(sc->sc_dev)) != 0) {
/*
* We were unable to create the HPCFB thread; bail out.
*/
sc->sc_thread = 0;
aprint_error_dev(sc->sc_dev, "unable to create thread, kernel "
"hpcfb scroll support disabled\n");
}
#endif /* HPCFB_JUMP */

if (!pmf_device_register(self, hpcfb_suspend, hpcfb_resume))
aprint_error_dev(self, "unable to establish power handler\n");
}

#ifdef HPCFB_JUMP
void
hpcfb_thread(void *arg)
{
struct hpcfb_softc *sc = arg;

/*
* Loop forever, doing a periodic check for update events.
*/
for (;;) {
/* HPCFB_LOCK(sc); */
sc->sc_dc->dc_state |= HPCFB_DC_SCRTHREAD;
if (!sc->sc_mapping) /* draw only EMUL mode */
hpcfb_update(sc->sc_dc);
sc->sc_dc->dc_state &= ~HPCFB_DC_SCRTHREAD;
/* APM_UNLOCK(sc); */
(void) tsleep(sc, PWAIT, "hpcfb", (8 * hz) / 7 / 10);
}
}
#endif /* HPCFB_JUMP */

/* Print function (for parent devices). */
int
hpcfbprint(void *aux, const char *pnp)
{
if (pnp)
aprint_normal("hpcfb at %s", pnp);

return (UNCONF);
}

int
hpcfb_cnattach(struct hpcfb_fbconf *fbconf)
{
#if NBIVIDEO > 0
struct hpcfb_fbconf __fbconf;
#endif
long defattr;

DPRINTF(("%s(%d): hpcfb_cnattach()\n", __FILE__, __LINE__));
#if NBIVIDEO > 0
if (fbconf == NULL) {
memset(&__fbconf, 0, sizeof(struct hpcfb_fbconf));
if (bivideo_getcnfb(&__fbconf) != 0)
return (ENXIO);
fbconf = &__fbconf;
}
#endif /* NBIVIDEO > 0 */
memset(&hpcfb_console_dc, 0, sizeof(struct hpcfb_devconfig));
if (hpcfb_init(fbconf, &hpcfb_console_dc) != 0)
return (ENXIO);
hpcfb_console_dc.dc_state |= HPCFB_DC_CURRENT;

hpcfb_console_dc.dc_tvram = hpcfb_console_tvram;
/* clear screen */
memset(hpcfb_console_tvram, 0, sizeof(hpcfb_console_tvram));
hpcfb_redraw(&hpcfb_console_dc, 0, hpcfb_console_dc.dc_rows, 1);

hpcfb_console_wsscreen = hpcfb_stdscreen;
hpcfb_console_wsscreen.nrows = hpcfb_console_dc.dc_rows;
hpcfb_console_wsscreen.ncols = hpcfb_console_dc.dc_cols;
hpcfb_console_wsscreen.capabilities = hpcfb_console_dc.dc_rinfo.ri_caps;
hpcfb_allocattr(&hpcfb_console_dc,
WSCOL_WHITE, WSCOL_BLACK, 0, &defattr);
#if NBIVIDEO > 0
/*
* This is early console. Do not really attach wsdisplay.
*/
if (fbconf == &__fbconf)
wsdisplay_preattach(&hpcfb_console_wsscreen, &hpcfb_console_dc,
0, 0, defattr);
else
#endif
wsdisplay_cnattach(&hpcfb_console_wsscreen, &hpcfb_console_dc,
0, 0, defattr);
hpcfbconsole = 1;

return (0);
}

int
hpcfb_init(struct hpcfb_fbconf *fbconf, struct hpcfb_devconfig *dc)
{
struct rasops_info *ri;
vaddr_t fbaddr;

fbaddr = (vaddr_t)fbconf->hf_baseaddr;
dc->dc_fbaddr = (u_char *)fbaddr;

/* init rasops */
ri = &dc->dc_rinfo;
memset(ri, 0, sizeof(struct rasops_info));
ri->ri_depth = fbconf->hf_pixel_width;
ri->ri_bits = (void *)fbaddr;
ri->ri_width = fbconf->hf_width;
ri->ri_height = fbconf->hf_height;
ri->ri_stride = fbconf->hf_bytes_per_line;
#if 0
ri->ri_flg = RI_FORCEMONO | RI_CURSOR;
#else
ri->ri_flg = RI_CURSOR;
#endif
if (dc == &hpcfb_console_dc)
ri->ri_flg |= RI_NO_AUTO;

switch (ri->ri_depth) {
case 8:
if (32 <= fbconf->hf_pack_width &&
(fbconf->hf_order_flags & HPCFB_REVORDER_BYTE) &&
(fbconf->hf_order_flags & HPCFB_REVORDER_WORD)) {
ri->ri_flg |= RI_BSWAP;
}
break;
default:
if (fbconf->hf_order_flags & HPCFB_REVORDER_BYTE) {
#if BYTE_ORDER == BIG_ENDIAN
ri->ri_flg |= RI_BSWAP;
#endif
} else {
#if BYTE_ORDER == LITTLE_ENDIAN
ri->ri_flg |= RI_BSWAP;
#endif
}
break;
}

if (fbconf->hf_class == HPCFB_CLASS_RGBCOLOR) {
ri->ri_rnum = fbconf->hf_u.hf_rgb.hf_red_width;
ri->ri_rpos = fbconf->hf_u.hf_rgb.hf_red_shift;
ri->ri_gnum = fbconf->hf_u.hf_rgb.hf_green_width;
ri->ri_gpos = fbconf->hf_u.hf_rgb.hf_green_shift;
ri->ri_bnum = fbconf->hf_u.hf_rgb.hf_blue_width;
ri->ri_bpos = fbconf->hf_u.hf_rgb.hf_blue_shift;
}

if (rasops_init(ri, HPCFB_MAX_ROW, HPCFB_MAX_COLUMN)) {
aprint_error_dev(dc->dc_sc->sc_dev, "rasops_init() failed!");
return -1;
}

/* over write color map of rasops */
hpcfb_cmap_reorder (fbconf, dc);

dc->dc_curx = -1;
dc->dc_cury = -1;
dc->dc_rows = dc->dc_rinfo.ri_rows;
dc->dc_cols = dc->dc_rinfo.ri_cols;
#ifdef HPCFB_JUMP
dc->dc_max_row = 0;
dc->dc_min_row = dc->dc_rows;
dc->dc_scroll = 0;
callout_init(&dc->dc_scroll_ch, 0);
#endif /* HPCFB_JUMP */
dc->dc_memsize = ri->ri_stride * ri->ri_height;
/* hook rasops in hpcfb_ops */
rasops_emul = ri->ri_ops; /* struct copy */
ri->ri_ops = hpcfb_emulops; /* struct copy */

return (0);
}

static void
hpcfb_cmap_reorder(struct hpcfb_fbconf *fbconf, struct hpcfb_devconfig *dc)
{
struct rasops_info *ri = &dc->dc_rinfo;
int reverse = fbconf->hf_access_flags & HPCFB_ACCESS_REVERSE;
int *cmap = ri->ri_devcmap;
int i, j, bg, fg, tmp;

/*
* Set foreground and background so that the screen
* looks black on white.
* Normally, black = 00 and white = ff.
* HPCFB_ACCESS_REVERSE means black = ff and white = 00.
*/
switch (fbconf->hf_pixel_width) {
case 1:
/* FALLTHROUGH */
case 2:
/* FALLTHROUGH */
case 4:
if (reverse) {
bg = 0;
fg = ~0;
} else {
bg = ~0;
fg = 0;
}
/* for gray-scale LCD, hi-contrast color map */
cmap[0] = bg;
for (i = 1; i < 16; i++)
cmap[i] = fg;
break;
case 8:
/* FALLTHROUGH */
case 16:
if (reverse) {
for (i = 0, j = 15; i < 8; i++, j--) {
tmp = cmap[i];
cmap[i] = cmap[j];
cmap[j] = tmp;
}
}
break;
}
}

int
hpcfb_ioctl(void *v, void *vs, u_long cmd, void *data, int flag,
struct lwp *l)
{
struct hpcfb_softc *sc = v;
struct hpcfb_devconfig *dc = sc->sc_dc;
struct wsdisplay_fbinfo *wdf;

DPRINTF(("hpcfb_ioctl(cmd=0x%lx)\n", cmd));
switch (cmd) {
case WSDISPLAYIO_GTYPE:
*(u_int *)data = WSDISPLAY_TYPE_HPCFB;
return (0);

case WSDISPLAYIO_GINFO:
wdf = (void *)data;
wdf->height = dc->dc_rinfo.ri_height;
wdf->width = dc->dc_rinfo.ri_width;
wdf->depth = dc->dc_rinfo.ri_depth;
wdf->cmsize = 256; /* XXXX */
return (0);

case WSDISPLAYIO_LINEBYTES:
*(u_int *)data = dc->dc_rinfo.ri_stride;
return 0;

case WSDISPLAYIO_SMODE:
if (*(int *)data == WSDISPLAYIO_MODE_EMUL){
if (sc->sc_mapping){
sc->sc_mapping = 0;
if (dc->dc_state&HPCFB_DC_DRAWING)
dc->dc_state &= ~HPCFB_DC_ABORT;
#ifdef HPCFB_FORCE_REDRAW
hpcfb_refresh_screen(sc);
#else
dc->dc_state |= HPCFB_DC_UPDATEALL;
#endif
}
} else {
if (!sc->sc_mapping) {
sc->sc_mapping = 1;
dc->dc_state |= HPCFB_DC_ABORT;
}
sc->sc_mapping = 1;
}
if (sc && sc->sc_accessops->iodone)
(*sc->sc_accessops->iodone)(sc->sc_accessctx);
return (0);

case WSDISPLAYIO_GETCMAP:
case WSDISPLAYIO_PUTCMAP:
case WSDISPLAYIO_SVIDEO:
case WSDISPLAYIO_GVIDEO:
case WSDISPLAYIO_GETPARAM:
case WSDISPLAYIO_SETPARAM:
case HPCFBIO_GCONF:
case HPCFBIO_SCONF:
case HPCFBIO_GDSPCONF:
case HPCFBIO_SDSPCONF:
case HPCFBIO_GOP:
case HPCFBIO_SOP:
return ((*sc->sc_accessops->ioctl)(sc->sc_accessctx,
cmd, data, flag, l));

default:
if (IOCGROUP(cmd) != 't')
DPRINTF(("%s(%d): hpcfb_ioctl(%lx, %lx) grp=%c num=%ld\n",
__FILE__, __LINE__,
cmd, (u_long)data, (char)IOCGROUP(cmd), cmd&0xff));
break;
}

return (EPASSTHROUGH); /* Inappropriate ioctl for device */
}

paddr_t
hpcfb_mmap(void *v, void *vs, off_t offset, int prot)
{
struct hpcfb_softc *sc = v;

return ((*sc->sc_accessops->mmap)(sc->sc_accessctx, offset, prot));
}

static void
hpcfb_power(int why, void *arg)
{
struct hpcfb_softc *sc = arg;

if (sc->sc_dc == NULL)
return; /* You have no screen yet. */

switch (why) {
case PWR_STANDBY:
break;
case PWR_SOFTSUSPEND: {
struct wsdisplay_softc *wsc = device_private(sc->sc_wsdisplay);

sc->sc_screen_resumed = wsdisplay_getactivescreen(wsc);

if (wsdisplay_switch(sc->sc_wsdisplay,
WSDISPLAY_NULLSCREEN, 1 /* waitok */) == 0) {
wsscreen_switchwait(wsc, WSDISPLAY_NULLSCREEN);
} else {
sc->sc_screen_resumed = WSDISPLAY_NULLSCREEN;
}

sc->sc_dc->dc_state &= ~HPCFB_DC_CURRENT;
break;
}
case PWR_SOFTRESUME:
sc->sc_dc->dc_state |= HPCFB_DC_CURRENT;
if (sc->sc_screen_resumed != WSDISPLAY_NULLSCREEN)
wsdisplay_switch(sc->sc_wsdisplay,
sc->sc_screen_resumed, 1 /* waitok */);
break;
}
}

static bool
hpcfb_suspend(device_t self, const pmf_qual_t *qual)
{
struct hpcfb_softc *sc = device_private(self);

hpcfb_power(PWR_SOFTSUSPEND, sc);
return true;
}

static bool
hpcfb_resume(device_t self, const pmf_qual_t *qual)
{
struct hpcfb_softc *sc = device_private(self);

hpcfb_power(PWR_SOFTRESUME, sc);
return true;
}

void
hpcfb_refresh_screen(struct hpcfb_softc *sc)
{
struct hpcfb_devconfig *dc = sc->sc_dc;
int x, y;

DPRINTF(("hpcfb_refresh_screen()\n"));
if (dc == NULL)
return;

#ifdef HPCFB_JUMP
if (dc->dc_state&HPCFB_DC_SCROLLPENDING) {
dc->dc_state &= ~HPCFB_DC_SCROLLPENDING;
dc->dc_state &= ~HPCFB_DC_UPDATE;
callout_stop(&dc->dc_scroll_ch);
}
#endif /* HPCFB_JUMP */
/*
* refresh screen
*/
dc->dc_state &= ~HPCFB_DC_UPDATEALL;
x = dc->dc_curx;
y = dc->dc_cury;
if (0 <= x && 0 <= y)
hpcfb_cursor_raw(dc, 0, y, x); /* disable cursor */
/* redraw all text */
hpcfb_redraw(dc, 0, dc->dc_rows, 1);
if (0 <= x && 0 <= y)
hpcfb_cursor_raw(dc, 1, y, x); /* enable cursor */
}

static int
hpcfb_alloc_screen(void *v, const struct wsscreen_descr *type,
void **cookiep, int *curxp, int *curyp, long *attrp)
{
struct hpcfb_softc *sc = v;
struct hpcfb_devconfig *dc;

DPRINTF(("%s(%d): hpcfb_alloc_screen()\n", __FILE__, __LINE__));

dc = malloc(sizeof(*dc), M_DEVBUF, M_WAITOK|M_ZERO);
if (dc == NULL)
return ENOMEM;

dc->dc_sc = sc;
if (hpcfb_init(&sc->sc_fbconflist[0], dc) != 0) {
free(dc, M_DEVBUF);
return EINVAL;
}
if (sc->sc_accessops->font) {
sc->sc_accessops->font(sc->sc_accessctx,
dc->dc_rinfo.ri_font);
}
/* Set video chip dependent CLUT if any. */
if (sc->sc_accessops->setclut)
sc->sc_accessops->setclut(sc->sc_accessctx, &dc->dc_rinfo);
printf("hpcfb: %dx%d pixels, %d colors, %dx%d chars\n",
dc->dc_rinfo.ri_width, dc->dc_rinfo.ri_height,
(1 << dc->dc_rinfo.ri_depth),
dc->dc_rinfo.ri_cols, dc->dc_rinfo.ri_rows);

/*
* XXX, wsdisplay won't reffer the information in wsscreen_descr
* structure until alloc_screen will be called, at least, under
* current implementation...
*/
hpcfb_stdscreen.nrows = dc->dc_rows;
hpcfb_stdscreen.ncols = dc->dc_cols;
hpcfb_stdscreen.capabilities = dc->dc_rinfo.ri_caps;

dc->dc_fbaddr = dc->dc_rinfo.ri_bits;
dc->dc_rows = dc->dc_rinfo.ri_rows;
dc->dc_cols = dc->dc_rinfo.ri_cols;
dc->dc_memsize = dc->dc_rinfo.ri_stride * dc->dc_rinfo.ri_height;

dc->dc_curx = -1;
dc->dc_cury = -1;
dc->dc_tvram = malloc(sizeof(struct hpcfb_tvrow)*dc->dc_rows,
M_DEVBUF, M_WAITOK|M_ZERO);
if (dc->dc_tvram == NULL){
free(dc, M_DEVBUF);
return (ENOMEM);
}

*curxp = 0;
*curyp = 0;
*cookiep = dc;
hpcfb_allocattr(*cookiep, WSCOL_WHITE, WSCOL_BLACK, 0, attrp);
DPRINTF(("%s(%d): hpcfb_alloc_screen(): %p\n",
__FILE__, __LINE__, dc));

return (0);
}

static void
hpcfb_free_screen(void *v, void *cookie)
{
struct hpcfb_devconfig *dc = cookie;

DPRINTF(("%s(%d): hpcfb_free_screen(%p)\n",
__FILE__, __LINE__, cookie));
#ifdef DIAGNOSTIC
if (dc == &hpcfb_console_dc)
panic("hpcfb_free_screen: console");
#endif
free(dc->dc_tvram, M_DEVBUF);
free(dc, M_DEVBUF);
}

static int
hpcfb_show_screen(void *v, void *cookie, int waitok,
void (*cb)(void *, int, int), void *cbarg)
{
struct hpcfb_softc *sc = v;
struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
struct hpcfb_devconfig *odc;

DPRINTF(("%s(%d): hpcfb_show_screen(%p)\n",
__FILE__, __LINE__, dc));

odc = sc->sc_dc;

if (dc == NULL || odc == dc) {
hpcfb_refresh_screen(sc);
return (0);
}

if (odc != NULL) {
odc->dc_state |= HPCFB_DC_SWITCHREQ;

if ((odc->dc_state&HPCFB_DC_DRAWING) != 0) {
odc->dc_state |= HPCFB_DC_ABORT;
}
}

sc->sc_wantedscreen = cookie;
sc->sc_switchcb = cb;
sc->sc_switchcbarg = cbarg;
if (cb) {
callout_reset(&sc->sc_switch_callout, 0,
(void(*)(void *))hpcfb_doswitch, sc);
return (EAGAIN);
}

hpcfb_doswitch(sc);
return (0);
}

void
hpcfb_doswitch(struct hpcfb_softc *sc)
{
struct hpcfb_devconfig *dc;
struct hpcfb_devconfig *odc;

DPRINTF(("hpcfb_doswitch()\n"));
odc = sc->sc_dc;
dc = sc->sc_wantedscreen;

if (!dc) {
(*sc->sc_switchcb)(sc->sc_switchcbarg, EIO, 0);
odc->dc_state &= ~HPCFB_DC_SWITCHREQ;
return;
}

if (odc == dc) {
odc->dc_state &= ~HPCFB_DC_SWITCHREQ;
return;
}

if (odc) {
#ifdef HPCFB_JUMP
odc->dc_state |= HPCFB_DC_ABORT;
#endif /* HPCFB_JUMP */

if (odc->dc_curx >= 0 && odc->dc_cury >= 0)
hpcfb_cursor_raw(odc, 0, odc->dc_cury, odc->dc_curx);
/* disable cursor */
/* disable old screen */
odc->dc_state &= ~HPCFB_DC_CURRENT;
/* XXX, This is too dangerous.
odc->dc_rinfo.ri_bits = NULL;
*/
}
/* switch screen to new one */
dc->dc_state |= HPCFB_DC_CURRENT;
dc->dc_state &= ~HPCFB_DC_ABORT;
dc->dc_rinfo.ri_bits = dc->dc_fbaddr;
sc->sc_dc = dc;

/* redraw screen image */
hpcfb_refresh_screen(sc);

sc->sc_wantedscreen = NULL;
if (sc->sc_switchcb)
(*sc->sc_switchcb)(sc->sc_switchcbarg, 0, 0);

if (odc != NULL)
odc->dc_state &= ~HPCFB_DC_SWITCHREQ;
dc->dc_state &= ~HPCFB_DC_SWITCHREQ;
return;
}

static void
hpcfb_pollc(void *v, int on)
{
struct hpcfb_softc *sc = v;

if (sc == NULL)
return;
sc->sc_polling = on;
if (sc->sc_accessops->iodone)
(*sc->sc_accessops->iodone)(sc->sc_accessctx);
if (on) {
hpcfb_refresh_screen(sc);
if (sc->sc_accessops->iodone)
(*sc->sc_accessops->iodone)(sc->sc_accessctx);
}

return;
}

/*
* cursor
*/
void
hpcfb_cursor(void *cookie, int on, int row, int col)
{
struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;

if (on) {
dc->dc_curx = col;
dc->dc_cury = row;
} else {
dc->dc_curx = -1;
dc->dc_cury = -1;
}

hpcfb_cursor_raw(cookie, on, row, col);
}

void
hpcfb_cursor_raw(void *cookie, int on, int row, int col)
{
struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
struct hpcfb_softc *sc = dc->dc_sc;
struct rasops_info *ri = &dc->dc_rinfo;
int curwidth, curheight;
int xoff, yoff;

#ifdef HPCFB_JUMP
if (dc->dc_state&HPCFB_DC_SCROLLPENDING) {
dc->dc_state |= HPCFB_DC_UPDATE;
return;
}
#endif /* HPCFB_JUMP */
if (!IS_DRAWABLE(dc)) {
return;
}

if (ri->ri_bits == NULL)
return;

dc->dc_state |= HPCFB_DC_DRAWING;
if (sc && sc->sc_accessops->cursor) {
xoff = col * ri->ri_font->fontwidth;
yoff = row * ri->ri_font->fontheight;
curheight = ri->ri_font->fontheight;
curwidth = ri->ri_font->fontwidth;
(*sc->sc_accessops->cursor)(sc->sc_accessctx,
on, xoff, yoff, curwidth, curheight);
} else
rasops_emul.cursor(ri, on, row, col);
dc->dc_state &= ~HPCFB_DC_DRAWING;
}

/*
* mapchar
*/
int
hpcfb_mapchar(void *cookie, int c, unsigned int *cp)
{
struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
struct rasops_info *ri = &dc->dc_rinfo;

return (rasops_emul.mapchar(ri, c, cp));
}

/*
* putchar
*/
void
hpcfb_tv_putchar(struct hpcfb_devconfig *dc, int row, int col, u_int uc,
long attr)
{
struct hpcfb_tvrow *vscn = dc->dc_tvram;
struct hpcfb_vchar *vc = &vscn[row].col[col];
struct hpcfb_vchar *vcb;

if (vscn == 0)
return;

dc->dc_state |= HPCFB_DC_TDRAWING;
#ifdef HPCFB_JUMP
if (row < dc->dc_min_row)
dc->dc_min_row = row;
if (row > dc->dc_max_row)
dc->dc_max_row = row;

#endif /* HPCFB_JUMP */
if (vscn[row].maxcol +1 == col)
vscn[row].maxcol = col;
else if (vscn[row].maxcol < col) {
vcb = &vscn[row].col[vscn[row].maxcol+1];
memset(vcb, 0,
sizeof(struct hpcfb_vchar)*(col-vscn[row].maxcol-1));
vscn[row].maxcol = col;
}
vc->c = uc;
vc->attr = attr;
dc->dc_state &= ~HPCFB_DC_TDRAWING;
#ifdef HPCFB_JUMP
hpcfb_check_update(dc);
#endif /* HPCFB_JUMP */
}

void
hpcfb_putchar(void *cookie, int row, int col, u_int uc, long attr)
{
struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
struct hpcfb_softc *sc = dc->dc_sc;
struct rasops_info *ri = &dc->dc_rinfo;
int xoff;
int yoff;
int fclr, uclr;
struct wsdisplay_font *font;

hpcfb_tv_putchar(dc, row, col, uc, attr);
#ifdef HPCFB_JUMP
if (dc->dc_state&HPCFB_DC_SCROLLPENDING) {
dc->dc_state |= HPCFB_DC_UPDATE;
return;
}
#endif /* HPCFB_JUMP */

if (!IS_DRAWABLE(dc)) {
return;
}

if (ri->ri_bits == NULL)
return;

dc->dc_state |= HPCFB_DC_DRAWING;
if (sc && sc->sc_accessops->putchar
&& (dc->dc_state&HPCFB_DC_CURRENT)) {
font = ri->ri_font;
yoff = row * ri->ri_font->fontheight;
xoff = col * ri->ri_font->fontwidth;
fclr = ri->ri_devcmap[((u_int)attr >> 24) & 15];
uclr = ri->ri_devcmap[((u_int)attr >> 16) & 15];

(*sc->sc_accessops->putchar)(sc->sc_accessctx,
xoff, yoff, font, fclr, uclr, uc, attr);
} else
rasops_emul.putchar(ri, row, col, uc, attr);
dc->dc_state &= ~HPCFB_DC_DRAWING;
#ifdef HPCFB_JUMP
hpcfb_check_update(dc);
#endif /* HPCFB_JUMP */
}

/*
* copycols
*/
void
hpcfb_tv_copycols(struct hpcfb_devconfig *dc, int row, int srccol, int dstcol,
int ncols)
{
struct hpcfb_tvrow *vscn = dc->dc_tvram;
struct hpcfb_vchar *svc = &vscn[row].col[srccol];
struct hpcfb_vchar *dvc = &vscn[row].col[dstcol];

if (vscn == 0)
return;

dc->dc_state |= HPCFB_DC_TDRAWING;
#ifdef HPCFB_JUMP
if (row < dc->dc_min_row)
dc->dc_min_row = row;
if (row > dc->dc_max_row)
dc->dc_max_row = row;
#endif /* HPCFB_JUMP */

memcpy(dvc, svc, ncols*sizeof(struct hpcfb_vchar));
if (vscn[row].maxcol < srccol+ncols-1)
vscn[row].maxcol = srccol+ncols-1;
if (vscn[row].maxcol < dstcol+ncols-1)
vscn[row].maxcol = dstcol+ncols-1;
dc->dc_state &= ~HPCFB_DC_TDRAWING;
#ifdef HPCFB_JUMP
hpcfb_check_update(dc);
#endif /* HPCFB_JUMP */
}

void
hpcfb_copycols(void *cookie, int row, int srccol, int dstcol, int ncols)
{
struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
struct hpcfb_softc *sc = dc->dc_sc;
struct rasops_info *ri = &dc->dc_rinfo;
int srcxoff,dstxoff;
int srcyoff,dstyoff;
int height, width;

hpcfb_tv_copycols(dc, row, srccol, dstcol, ncols);
#ifdef HPCFB_JUMP
if (dc->dc_state&HPCFB_DC_SCROLLPENDING) {
dc->dc_state |= HPCFB_DC_UPDATE;
return;
}
#endif /* HPCFB_JUMP */
if (!IS_DRAWABLE(dc)) {
return;
}

if (ri->ri_bits == NULL)
return;

dc->dc_state |= HPCFB_DC_DRAWING;
if (sc && sc->sc_accessops->bitblit
&& (dc->dc_state&HPCFB_DC_CURRENT)) {
srcxoff = srccol * ri->ri_font->fontwidth;
srcyoff = row * ri->ri_font->fontheight;
dstxoff = dstcol * ri->ri_font->fontwidth;
dstyoff = row * ri->ri_font->fontheight;
width = ncols * ri->ri_font->fontwidth;
height = ri->ri_font->fontheight;
(*sc->sc_accessops->bitblit)(sc->sc_accessctx,
srcxoff, srcyoff, dstxoff, dstyoff, height, width);
} else
rasops_emul.copycols(ri, row, srccol, dstcol, ncols);
dc->dc_state &= ~HPCFB_DC_DRAWING;
#ifdef HPCFB_JUMP
hpcfb_check_update(dc);
#endif /* HPCFB_JUMP */
}

/*
* erasecols
*/
void
hpcfb_tv_erasecols(struct hpcfb_devconfig *dc,
int row, int startcol, int ncols, long attr)
{
struct hpcfb_tvrow *vscn = dc->dc_tvram;

if (vscn == 0)
return;

dc->dc_state |= HPCFB_DC_TDRAWING;
#ifdef HPCFB_JUMP
if (row < dc->dc_min_row)
dc->dc_min_row = row;
if (row > dc->dc_max_row)
dc->dc_max_row = row;
#endif /* HPCFB_JUMP */

vscn[row].maxcol = startcol-1;
if (vscn[row].spacecol < startcol+ncols-1)
vscn[row].spacecol = startcol+ncols-1;
dc->dc_state &= ~HPCFB_DC_TDRAWING;
#ifdef HPCFB_JUMP
hpcfb_check_update(dc);
#endif /* HPCFB_JUMP */
}

void
hpcfb_erasecols(void *cookie, int row, int startcol, int ncols, long attr)
{
struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
struct hpcfb_softc *sc = dc->dc_sc;
struct rasops_info *ri = &dc->dc_rinfo;
int xoff, yoff;
int width, height;

hpcfb_tv_erasecols(dc, row, startcol, ncols, attr);
#ifdef HPCFB_JUMP
if (dc->dc_state&HPCFB_DC_SCROLLPENDING) {
dc->dc_state |= HPCFB_DC_UPDATE;
return;
}
#endif /* HPCFB_JUMP */
if (!IS_DRAWABLE(dc)) {
return;
}

if (ri->ri_bits == NULL)
return;

dc->dc_state |= HPCFB_DC_DRAWING;
if (sc && sc->sc_accessops->erase
&& (dc->dc_state&HPCFB_DC_CURRENT)) {
xoff = startcol * ri->ri_font->fontwidth;
yoff = row * ri->ri_font->fontheight;
width = ncols * ri->ri_font->fontwidth;
height = ri->ri_font->fontheight;
(*sc->sc_accessops->erase)(sc->sc_accessctx,
xoff, yoff, height, width, attr);
} else
rasops_emul.erasecols(ri, row, startcol, ncols, attr);
dc->dc_state &= ~HPCFB_DC_DRAWING;
#ifdef HPCFB_JUMP
hpcfb_check_update(dc);
#endif /* HPCFB_JUMP */
}

/*
* Copy rows.
*/
void
hpcfb_tv_copyrows(struct hpcfb_devconfig *dc, int src, int dst, int num)
{
struct hpcfb_tvrow *vscn = dc->dc_tvram;
struct hpcfb_tvrow *svc = &vscn[src];
struct hpcfb_tvrow *dvc = &vscn[dst];
int i;
int d;

if (vscn == 0)
return;

dc->dc_state |= HPCFB_DC_TDRAWING;
#ifdef HPCFB_JUMP
if (dst < dc->dc_min_row)
dc->dc_min_row = dst;
if (dst + num > dc->dc_max_row)
dc->dc_max_row = dst + num -1;
#endif /* HPCFB_JUMP */

if (svc > dvc)
d = 1;
else if (svc < dvc) {
svc += num-1;
dvc += num-1;
d = -1;
} else {
dc->dc_state &= ~HPCFB_DC_TDRAWING;
#ifdef HPCFB_JUMP
hpcfb_check_update(dc);
#endif /* HPCFB_JUMP */
return;
}

for (i = 0; i < num; i++) {
memcpy(&dvc->col[0], &svc->col[0], sizeof(struct hpcfb_vchar)*(svc->maxcol+1));
if (svc->maxcol < dvc->maxcol && dvc->spacecol < dvc->maxcol)
dvc->spacecol = dvc->maxcol;
dvc->maxcol = svc->maxcol;
svc+=d;
dvc+=d;
}
dc->dc_state &= ~HPCFB_DC_TDRAWING;
#ifdef HPCFB_JUMP
hpcfb_check_update(dc);
#endif /* HPCFB_JUMP */
}

void
hpcfb_redraw(void *cookie, int row, int num, int all)
{
struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
struct rasops_info *ri = &dc->dc_rinfo;
int cols;
struct hpcfb_tvrow *vscn = dc->dc_tvram;
struct hpcfb_vchar *svc;
int i, j;

#ifdef HPCFB_JUMP
if (dc->dc_state&HPCFB_DC_SCROLLPENDING) {
dc->dc_state |= HPCFB_DC_UPDATE;
return;
}
#endif /* HPCFB_JUMP */
if (dc->dc_sc != NULL
&& !dc->dc_sc->sc_polling
&& dc->dc_sc->sc_mapping)
return;

dc->dc_state &= ~HPCFB_DC_ABORT;

if (vscn == 0)
return;

if (!IS_DRAWABLE(dc)) {
return;
}

if (ri->ri_bits == NULL)
return;

dc->dc_state |= HPCFB_DC_DRAWING;
dc->dc_state |= HPCFB_DC_TDRAWING;
for (i = 0; i < num; i++) {
if (dc->dc_state&HPCFB_DC_ABORT)
break;
if ((dc->dc_state&HPCFB_DC_CURRENT) == 0)
break;
cols = vscn[row+i].maxcol;
for (j = 0; j <= cols; j++) {
if (dc->dc_state&HPCFB_DC_ABORT)
continue;
if ((dc->dc_state&HPCFB_DC_CURRENT) == 0)
continue;
svc = &vscn[row+i].col[j];
rasops_emul.putchar(ri, row + i, j, svc->c, svc->attr);
}
if (all)
cols = dc->dc_cols-1;
else
cols = vscn[row+i].spacecol;
for (; j <= cols; j++) {
if (dc->dc_state&HPCFB_DC_ABORT)
continue;
if ((dc->dc_state&HPCFB_DC_CURRENT) == 0)
continue;
rasops_emul.putchar(ri, row + i, j, ' ', 0);
}
vscn[row+i].spacecol = 0;
}
if (dc->dc_state&HPCFB_DC_ABORT)
dc->dc_state &= ~HPCFB_DC_ABORT;
dc->dc_state &= ~HPCFB_DC_DRAWING;
dc->dc_state &= ~HPCFB_DC_TDRAWING;
#ifdef HPCFB_JUMP
hpcfb_check_update(dc);
#endif /* HPCFB_JUMP */
}

#ifdef HPCFB_JUMP
void
hpcfb_update(void *v)
{
struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)v;

/* callout_stop(&dc->dc_scroll_ch); */
dc->dc_state &= ~HPCFB_DC_SCROLLPENDING;
if (dc->dc_curx > 0 && dc->dc_cury > 0)
hpcfb_cursor_raw(dc, 0, dc->dc_cury, dc->dc_curx);
if ((dc->dc_state&HPCFB_DC_UPDATEALL)) {
hpcfb_redraw(dc, 0, dc->dc_rows, 1);
dc->dc_state &= ~(HPCFB_DC_UPDATE|HPCFB_DC_UPDATEALL);
} else if ((dc->dc_state&HPCFB_DC_UPDATE)) {
hpcfb_redraw(dc, dc->dc_min_row,
dc->dc_max_row - dc->dc_min_row, 0);
dc->dc_state &= ~HPCFB_DC_UPDATE;
} else {
hpcfb_redraw(dc, dc->dc_scroll_dst, dc->dc_scroll_num, 0);
}
if (dc->dc_curx > 0 && dc->dc_cury > 0)
hpcfb_cursor_raw(dc, 1, dc->dc_cury, dc->dc_curx);
}

void
hpcfb_do_scroll(void *v)
{
struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)v;

dc->dc_state |= HPCFB_DC_SCRTHREAD;
if (dc->dc_state&(HPCFB_DC_DRAWING|HPCFB_DC_TDRAWING))
dc->dc_state |= HPCFB_DC_SCRDELAY;
else if (dc->dc_sc != NULL && dc->dc_sc->sc_thread)
wakeup(dc->dc_sc);
else if (dc->dc_sc != NULL && !dc->dc_sc->sc_mapping) {
/* draw only EMUL mode */
hpcfb_update(v);
}
dc->dc_state &= ~HPCFB_DC_SCRTHREAD;
}

void
hpcfb_check_update(void *v)
{
struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)v;

if (dc->dc_sc != NULL
&& dc->dc_sc->sc_polling
&& (dc->dc_state&HPCFB_DC_SCROLLPENDING)){
callout_stop(&dc->dc_scroll_ch);
dc->dc_state &= ~HPCFB_DC_SCRDELAY;
hpcfb_update(v);
}
else if (dc->dc_state&HPCFB_DC_SCRDELAY){
dc->dc_state &= ~HPCFB_DC_SCRDELAY;
hpcfb_update(v);
} else if (dc->dc_state&HPCFB_DC_UPDATEALL){
dc->dc_state &= ~HPCFB_DC_UPDATEALL;
hpcfb_update(v);
}
}
#endif /* HPCFB_JUMP */

void
hpcfb_copyrows(void *cookie, int src, int dst, int num)
{
struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
struct rasops_info *ri = &dc->dc_rinfo;
struct hpcfb_softc *sc = dc->dc_sc;
int srcyoff, dstyoff;
int width, height;

hpcfb_tv_copyrows(cookie, src, dst, num);

if (!IS_DRAWABLE(dc)) {
return;
}

if (ri->ri_bits == NULL)
return;

if (sc && sc->sc_accessops->bitblit
&& (dc->dc_state&HPCFB_DC_CURRENT)) {
dc->dc_state |= HPCFB_DC_DRAWING;
srcyoff = src * ri->ri_font->fontheight;
dstyoff = dst * ri->ri_font->fontheight;
width = dc->dc_cols * ri->ri_font->fontwidth;
height = num * ri->ri_font->fontheight;
(*sc->sc_accessops->bitblit)(sc->sc_accessctx,
0, srcyoff, 0, dstyoff, height, width);
dc->dc_state &= ~HPCFB_DC_DRAWING;
}
else {
#ifdef HPCFB_JUMP
if (sc && sc->sc_polling) {
hpcfb_check_update(dc);
} else if ((dc->dc_state&HPCFB_DC_SCROLLPENDING) == 0) {
dc->dc_state |= HPCFB_DC_SCROLLPENDING;
dc->dc_scroll = 1;
dc->dc_scroll_src = src;
dc->dc_scroll_dst = dst;
dc->dc_scroll_num = num;
callout_reset(&dc->dc_scroll_ch, hz/100, &hpcfb_do_scroll, dc);
return;
} else if (dc->dc_scroll++ < dc->dc_rows/HPCFB_MAX_JUMP) {
dc->dc_state |= HPCFB_DC_UPDATE;
return;
} else {
dc->dc_state &= ~HPCFB_DC_SCROLLPENDING;
callout_stop(&dc->dc_scroll_ch);
}
if (dc->dc_state&HPCFB_DC_UPDATE) {
dc->dc_state &= ~HPCFB_DC_UPDATE;
hpcfb_redraw(cookie, dc->dc_min_row,
dc->dc_max_row - dc->dc_min_row, 0);
dc->dc_max_row = 0;
dc->dc_min_row = dc->dc_rows;
if (dc->dc_curx > 0 && dc->dc_cury > 0)
hpcfb_cursor(dc, 1, dc->dc_cury, dc->dc_curx);
return;
}
#endif /* HPCFB_JUMP */
hpcfb_redraw(cookie, dst, num, 0);
}
#ifdef HPCFB_JUMP
hpcfb_check_update(dc);
#endif /* HPCFB_JUMP */
}

/*
* eraserows
*/
void
hpcfb_tv_eraserows(struct hpcfb_devconfig *dc,
int row, int nrow, long attr)
{
struct hpcfb_tvrow *vscn = dc->dc_tvram;
int cols;
int i;

if (vscn == 0)
return;

dc->dc_state |= HPCFB_DC_TDRAWING;
dc->dc_state &= ~HPCFB_DC_TDRAWING;
#ifdef HPCFB_JUMP
if (row < dc->dc_min_row)
dc->dc_min_row = row;
if (row + nrow > dc->dc_max_row)
dc->dc_max_row = row + nrow;
#endif /* HPCFB_JUMP */

for (i = 0; i < nrow; i++) {
cols = vscn[row+i].maxcol;
if (vscn[row+i].spacecol < cols)
vscn[row+i].spacecol = cols;
vscn[row+i].maxcol = -1;
}
#ifdef HPCFB_JUMP
hpcfb_check_update(dc);
#endif /* HPCFB_JUMP */
}

void
hpcfb_eraserows(void *cookie, int row, int nrow, long attr)
{
struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
struct hpcfb_softc *sc = dc->dc_sc;
struct rasops_info *ri = &dc->dc_rinfo;
int yoff;
int width;
int height;

hpcfb_tv_eraserows(dc, row, nrow, attr);
#ifdef HPCFB_JUMP
if (dc->dc_state&HPCFB_DC_SCROLLPENDING) {
dc->dc_state |= HPCFB_DC_UPDATE;
return;
}
#endif /* HPCFB_JUMP */
if (!IS_DRAWABLE(dc)) {
return;
}

if (ri->ri_bits == NULL)
return;

dc->dc_state |= HPCFB_DC_DRAWING;
if (sc && sc->sc_accessops->erase
&& (dc->dc_state&HPCFB_DC_CURRENT)) {
yoff = row * ri->ri_font->fontheight;
width = dc->dc_cols * ri->ri_font->fontwidth;
height = nrow * ri->ri_font->fontheight;
(*sc->sc_accessops->erase)(sc->sc_accessctx,
0, yoff, height, width, attr);
} else
rasops_emul.eraserows(ri, row, nrow, attr);
dc->dc_state &= ~HPCFB_DC_DRAWING;
#ifdef HPCFB_JUMP
hpcfb_check_update(dc);
#endif /* HPCFB_JUMP */
}

/*
* allocattr
*/
int
hpcfb_allocattr(void *cookie, int fg, int bg, int flags, long *attrp)
{
struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
struct rasops_info *ri = &dc->dc_rinfo;

return (rasops_emul.allocattr(ri, fg, bg, flags, attrp));
}