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      1 /*	$NetBSD: hpcfb.c,v 1.66 2024/02/29 22:01:57 andvar Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1999
      5  *         Shin Takemura and PocketBSD Project. All rights reserved.
      6  * Copyright (c) 2000,2001
      7  *         SATO Kazumi. All rights reserved.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. All advertising materials mentioning features or use of this software
     18  *    must display the following acknowledgement:
     19  *	This product includes software developed by the PocketBSD project
     20  *	and its contributors.
     21  * 4. Neither the name of the project nor the names of its contributors
     22  *    may be used to endorse or promote products derived from this software
     23  *    without specific prior written permission.
     24  *
     25  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     35  * SUCH DAMAGE.
     36  *
     37  */
     38 
     39 /*
     40  * jump scroll, scroll thread, multiscreen, virtual text vram
     41  * and hpcfb_emulops functions
     42  * written by SATO Kazumi.
     43  */
     44 
     45 #include <sys/cdefs.h>
     46 __KERNEL_RCSID(0, "$NetBSD: hpcfb.c,v 1.66 2024/02/29 22:01:57 andvar Exp $");
     47 
     48 #ifdef _KERNEL_OPT
     49 #include "opt_hpcfb.h"
     50 #endif
     51 
     52 #include <sys/param.h>
     53 #include <sys/systm.h>
     54 #include <sys/kernel.h>
     55 #include <sys/signalvar.h>
     56 #include <sys/proc.h>
     57 #include <sys/kthread.h>
     58 #include <sys/device.h>
     59 #include <sys/conf.h>
     60 #include <sys/malloc.h>
     61 #include <sys/buf.h>
     62 #include <sys/ioctl.h>
     63 
     64 #include <sys/bus.h>
     65 
     66 #include <dev/wscons/wsconsio.h>
     67 #include <dev/wscons/wsdisplayvar.h>
     68 #include <dev/wscons/wscons_callbacks.h>
     69 
     70 #include <dev/wsfont/wsfont.h>
     71 #include <dev/rasops/rasops.h>
     72 
     73 #include <dev/hpc/hpcfbvar.h>
     74 #include <dev/hpc/hpcfbio.h>
     75 
     76 #include "bivideo.h"
     77 #if NBIVIDEO > 0
     78 #include <dev/hpc/bivideovar.h>
     79 #endif
     80 
     81 #ifdef FBDEBUG
     82 int	hpcfb_debug = 0;
     83 #define	DPRINTF(arg)	if (hpcfb_debug) printf arg
     84 #else
     85 #define	DPRINTF(arg)	do {} while (/* CONSTCOND */ 0)
     86 #endif
     87 
     88 #ifndef HPCFB_MAX_COLUMN
     89 #define HPCFB_MAX_COLUMN 130
     90 #endif /* HPCFB_MAX_COLUMN */
     91 #ifndef HPCFB_MAX_ROW
     92 #define HPCFB_MAX_ROW 80
     93 #endif /* HPCFB_MAX_ROW */
     94 
     95 /*
     96  * currently experimental
     97 #define HPCFB_JUMP
     98 */
     99 
    100 struct hpcfb_vchar {
    101 	u_int c;
    102 	long attr;
    103 };
    104 
    105 struct hpcfb_tvrow {
    106 	int maxcol;
    107 	int spacecol;
    108 	struct hpcfb_vchar col[HPCFB_MAX_COLUMN];
    109 };
    110 
    111 struct hpcfb_devconfig {
    112 	struct rasops_info	dc_rinfo;	/* rasops information */
    113 
    114 	int		dc_blanked;	/* currently had video disabled */
    115 	struct hpcfb_softc *dc_sc;
    116 	int dc_rows;
    117 	int dc_cols;
    118 	struct hpcfb_tvrow *dc_tvram;
    119 	int dc_curx;
    120 	int dc_cury;
    121 #ifdef HPCFB_JUMP
    122 	int dc_min_row;
    123 	int dc_max_row;
    124 	int dc_scroll;
    125 	struct callout dc_scroll_ch;
    126 	int dc_scroll_src;
    127 	int dc_scroll_dst;
    128 	int dc_scroll_num;
    129 #endif /* HPCFB_JUMP */
    130 	volatile int dc_state;
    131 #define HPCFB_DC_CURRENT		0x80000000
    132 #define HPCFB_DC_DRAWING		0x01	/* drawing raster ops */
    133 #define HPCFB_DC_TDRAWING		0x02	/* drawing tvram */
    134 #define HPCFB_DC_SCROLLPENDING		0x04	/* scroll is pending */
    135 #define HPCFB_DC_UPDATE			0x08	/* tvram update */
    136 #define HPCFB_DC_SCRDELAY		0x10	/* scroll time but delay it */
    137 #define HPCFB_DC_SCRTHREAD		0x20	/* in scroll thread or callout */
    138 #define HPCFB_DC_UPDATEALL		0x40	/* need to redraw all */
    139 #define HPCFB_DC_ABORT			0x80	/* abort redrawing */
    140 #define	HPCFB_DC_SWITCHREQ		0x100	/* switch request exist */
    141 	int	dc_memsize;
    142 	u_char *dc_fbaddr;
    143 };
    144 
    145 #define IS_DRAWABLE(dc) \
    146 	(((dc)->dc_state&HPCFB_DC_CURRENT)&& \
    147 	 (((dc)->dc_state&(HPCFB_DC_DRAWING|HPCFB_DC_SWITCHREQ)) == 0))
    148 
    149 #define HPCFB_MAX_SCREEN 5
    150 #define HPCFB_MAX_JUMP 5
    151 
    152 struct hpcfb_softc {
    153 	device_t sc_dev;
    154 	struct	hpcfb_devconfig *sc_dc;	/* device configuration */
    155 	const struct hpcfb_accessops	*sc_accessops;
    156 	void *sc_accessctx;
    157 	device_t sc_wsdisplay;
    158 	int sc_screen_resumed;
    159 	int sc_polling;
    160 	int sc_mapping;
    161 	struct proc *sc_thread;
    162 	void *sc_wantedscreen;
    163 	void (*sc_switchcb)(void *, int, int);
    164 	void *sc_switchcbarg;
    165 	struct callout sc_switch_callout;
    166 	int sc_nfbconf;
    167 	struct hpcfb_fbconf *sc_fbconflist;
    168 };
    169 
    170 /*
    171  *  function prototypes
    172  */
    173 int	hpcfbmatch(device_t, cfdata_t, void *);
    174 void	hpcfbattach(device_t, device_t, void *);
    175 int	hpcfbprint(void *, const char *);
    176 
    177 int	hpcfb_ioctl(void *, void *, u_long, void *, int, struct lwp *);
    178 paddr_t	hpcfb_mmap(void *, void *, off_t, int);
    179 
    180 void	hpcfb_refresh_screen(struct hpcfb_softc *);
    181 void	hpcfb_doswitch(struct hpcfb_softc *);
    182 
    183 #ifdef HPCFB_JUMP
    184 static void	hpcfb_thread(void *);
    185 #endif /* HPCFB_JUMP */
    186 
    187 static int	hpcfb_init(struct hpcfb_fbconf *, struct hpcfb_devconfig *);
    188 static int	hpcfb_alloc_screen(void *, const struct wsscreen_descr *,
    189 		    void **, int *, int *, long *);
    190 static void	hpcfb_free_screen(void *, void *);
    191 static int	hpcfb_show_screen(void *, void *, int,
    192 		    void (*) (void *, int, int), void *);
    193 static void     hpcfb_pollc(void *, int);
    194 static void	hpcfb_cmap_reorder(struct hpcfb_fbconf *,
    195 		    struct hpcfb_devconfig *);
    196 
    197 static void	hpcfb_power(int, void *);
    198 static bool	hpcfb_suspend(device_t, const pmf_qual_t *);
    199 static bool	hpcfb_resume(device_t, const pmf_qual_t *);
    200 
    201 
    202 void    hpcfb_cursor(void *, int, int, int);
    203 int     hpcfb_mapchar(void *, int, unsigned int *);
    204 void    hpcfb_putchar(void *, int, int, u_int, long);
    205 void    hpcfb_copycols(void *, int, int, int, int);
    206 void    hpcfb_erasecols(void *, int, int, int, long);
    207 void    hpcfb_redraw(void *, int, int, int);
    208 void    hpcfb_copyrows(void *, int, int, int);
    209 void    hpcfb_eraserows(void *, int, int, long);
    210 int     hpcfb_allocattr(void *, int, int, int, long *);
    211 void    hpcfb_cursor_raw(void *, int, int, int);
    212 
    213 #ifdef HPCFB_JUMP
    214 void	hpcfb_update(void *);
    215 void	hpcfb_do_scroll(void *);
    216 void	hpcfb_check_update(void *);
    217 #endif /* HPCFB_JUMP */
    218 
    219 struct wsdisplay_emulops hpcfb_emulops = {
    220 	.cursor		= hpcfb_cursor,
    221 	.mapchar	= hpcfb_mapchar,
    222 	.putchar	= hpcfb_putchar,
    223 	.copycols	= hpcfb_copycols,
    224 	.erasecols	= hpcfb_erasecols,
    225 	.copyrows	= hpcfb_copyrows,
    226 	.eraserows	= hpcfb_eraserows,
    227 	.allocattr	= hpcfb_allocattr,
    228 	.replaceattr	= NULL,
    229 };
    230 
    231 /*
    232  *  static variables
    233  */
    234 CFATTACH_DECL_NEW(hpcfb, sizeof(struct hpcfb_softc),
    235     hpcfbmatch, hpcfbattach, NULL, NULL);
    236 
    237 struct wsscreen_descr hpcfb_stdscreen = {
    238 	.name		= "std",
    239 	.textops	= &hpcfb_emulops, /* XXX */
    240 	.capabilities	= WSSCREEN_REVERSE,
    241 	/* XXX: ncols/nrows will be filled in -- shouldn't, they are global */
    242 };
    243 
    244 const struct wsscreen_descr *_hpcfb_scrlist[] = {
    245 	&hpcfb_stdscreen,
    246 	/* XXX other formats, graphics screen? */
    247 };
    248 
    249 struct wsscreen_list hpcfb_screenlist = {
    250 	.nscreens = __arraycount(_hpcfb_scrlist),
    251 	.screens = _hpcfb_scrlist,
    252 };
    253 
    254 struct wsdisplay_accessops hpcfb_accessops = {
    255 	.ioctl		= hpcfb_ioctl,
    256 	.mmap		= hpcfb_mmap,
    257 	.alloc_screen	= hpcfb_alloc_screen,
    258 	.free_screen	= hpcfb_free_screen,
    259 	.show_screen	= hpcfb_show_screen,
    260 	.load_font	= NULL,
    261 	.pollc		= hpcfb_pollc,
    262 	.scroll		= NULL,
    263 };
    264 
    265 void    hpcfb_tv_putchar(struct hpcfb_devconfig *, int, int, u_int, long);
    266 void    hpcfb_tv_copycols(struct hpcfb_devconfig *, int, int, int, int);
    267 void    hpcfb_tv_erasecols(struct hpcfb_devconfig *, int, int, int, long);
    268 void    hpcfb_tv_copyrows(struct hpcfb_devconfig *, int, int, int);
    269 void    hpcfb_tv_eraserows(struct hpcfb_devconfig *, int, int, long);
    270 
    271 struct wsdisplay_emulops rasops_emul;
    272 
    273 static int hpcfbconsole;
    274 struct hpcfb_devconfig hpcfb_console_dc;
    275 struct wsscreen_descr hpcfb_console_wsscreen;
    276 struct hpcfb_tvrow hpcfb_console_tvram[HPCFB_MAX_ROW];
    277 
    278 /*
    279  *  function bodies
    280  */
    281 
    282 int
    283 hpcfbmatch(device_t parent, cfdata_t match, void *aux)
    284 {
    285 	return (1);
    286 }
    287 
    288 void
    289 hpcfbattach(device_t parent, device_t self, void *aux)
    290 {
    291 	struct hpcfb_softc *sc;
    292 	struct hpcfb_attach_args *ha = aux;
    293 	struct wsemuldisplaydev_attach_args wa;
    294 
    295 	sc = device_private(self);
    296 	sc->sc_dev = self;
    297 
    298 	sc->sc_accessops = ha->ha_accessops;
    299 	sc->sc_accessctx = ha->ha_accessctx;
    300 	sc->sc_nfbconf = ha->ha_nfbconf;
    301 	sc->sc_fbconflist = ha->ha_fbconflist;
    302 
    303 	if (hpcfbconsole) {
    304 		sc->sc_dc = &hpcfb_console_dc;
    305 		sc->sc_dc->dc_rinfo.ri_flg &= ~RI_NO_AUTO;
    306 		hpcfb_console_dc.dc_sc = sc;
    307 		printf(": %dx%d pixels, %d colors, %dx%d chars",
    308 		    sc->sc_dc->dc_rinfo.ri_width,sc->sc_dc->dc_rinfo.ri_height,
    309 		    (1 << sc->sc_dc->dc_rinfo.ri_depth),
    310 		    sc->sc_dc->dc_rinfo.ri_cols,sc->sc_dc->dc_rinfo.ri_rows);
    311 		/* Set video chip dependent CLUT if any. */
    312 		if (sc->sc_accessops->setclut)
    313 			sc->sc_accessops->setclut(sc->sc_accessctx,
    314 			    &hpcfb_console_dc.dc_rinfo);
    315 	}
    316 	printf("\n");
    317 
    318 	sc->sc_polling = 0; /* XXX */
    319 	sc->sc_mapping = 0; /* XXX */
    320 	callout_init(&sc->sc_switch_callout, 0);
    321 
    322 	wa.console = hpcfbconsole;
    323 	wa.scrdata = &hpcfb_screenlist;
    324 	wa.accessops = &hpcfb_accessops;
    325 	wa.accesscookie = sc;
    326 
    327 	sc->sc_wsdisplay = config_found(self, &wa, wsemuldisplaydevprint,
    328 	    CFARGS_NONE);
    329 
    330 #ifdef HPCFB_JUMP
    331 	/*
    332 	 * Create a kernel thread to scroll,
    333 	 */
    334 	if (kthread_create(PRI_NONE, 0, NULL, hpcfb_thread, sc,
    335 	    &sc->sc_thread, "%s", device_xname(sc->sc_dev)) != 0) {
    336 		/*
    337 		 * We were unable to create the HPCFB thread; bail out.
    338 		 */
    339 		sc->sc_thread = 0;
    340 		aprint_error_dev(sc->sc_dev, "unable to create thread, kernel "
    341 		    "hpcfb scroll support disabled\n");
    342 	}
    343 #endif /* HPCFB_JUMP */
    344 
    345 	if (!pmf_device_register(self, hpcfb_suspend, hpcfb_resume))
    346 		aprint_error_dev(self, "unable to establish power handler\n");
    347 }
    348 
    349 #ifdef HPCFB_JUMP
    350 void
    351 hpcfb_thread(void *arg)
    352 {
    353 	struct hpcfb_softc *sc = arg;
    354 
    355 	/*
    356 	 * Loop forever, doing a periodic check for update events.
    357 	 */
    358 	for (;;) {
    359 		/* HPCFB_LOCK(sc); */
    360 		sc->sc_dc->dc_state |= HPCFB_DC_SCRTHREAD;
    361 		if (!sc->sc_mapping) /* draw only EMUL mode */
    362 			hpcfb_update(sc->sc_dc);
    363 		sc->sc_dc->dc_state &= ~HPCFB_DC_SCRTHREAD;
    364 		/* APM_UNLOCK(sc); */
    365 		(void) tsleep(sc, PWAIT, "hpcfb",  (8 * hz) / 7 / 10);
    366 	}
    367 }
    368 #endif /* HPCFB_JUMP */
    369 
    370 /* Print function (for parent devices). */
    371 int
    372 hpcfbprint(void *aux, const char *pnp)
    373 {
    374 	if (pnp)
    375 		aprint_normal("hpcfb at %s", pnp);
    376 
    377 	return (UNCONF);
    378 }
    379 
    380 int
    381 hpcfb_cnattach(struct hpcfb_fbconf *fbconf)
    382 {
    383 #if NBIVIDEO > 0
    384 	struct hpcfb_fbconf __fbconf;
    385 #endif
    386 	long defattr;
    387 
    388 	DPRINTF(("%s(%d): hpcfb_cnattach()\n", __FILE__, __LINE__));
    389 #if NBIVIDEO > 0
    390 	if (fbconf == NULL) {
    391 		memset(&__fbconf, 0, sizeof(struct hpcfb_fbconf));
    392 		if (bivideo_getcnfb(&__fbconf) != 0)
    393 			return (ENXIO);
    394 		fbconf = &__fbconf;
    395 	}
    396 #endif /* NBIVIDEO > 0 */
    397 	memset(&hpcfb_console_dc, 0, sizeof(struct hpcfb_devconfig));
    398 	if (hpcfb_init(fbconf, &hpcfb_console_dc) != 0)
    399 		return (ENXIO);
    400 	hpcfb_console_dc.dc_state |= HPCFB_DC_CURRENT;
    401 
    402 	hpcfb_console_dc.dc_tvram = hpcfb_console_tvram;
    403 	/* clear screen */
    404 	memset(hpcfb_console_tvram, 0, sizeof(hpcfb_console_tvram));
    405 	hpcfb_redraw(&hpcfb_console_dc, 0, hpcfb_console_dc.dc_rows, 1);
    406 
    407 	hpcfb_console_wsscreen = hpcfb_stdscreen;
    408 	hpcfb_console_wsscreen.nrows = hpcfb_console_dc.dc_rows;
    409 	hpcfb_console_wsscreen.ncols = hpcfb_console_dc.dc_cols;
    410 	hpcfb_console_wsscreen.capabilities = hpcfb_console_dc.dc_rinfo.ri_caps;
    411 	hpcfb_allocattr(&hpcfb_console_dc,
    412 			WSCOL_WHITE, WSCOL_BLACK, 0, &defattr);
    413 #if NBIVIDEO > 0
    414 	/*
    415 	 * This is early console. Do not really attach wsdisplay.
    416 	 */
    417 	if (fbconf == &__fbconf)
    418 		wsdisplay_preattach(&hpcfb_console_wsscreen, &hpcfb_console_dc,
    419 		    0, 0, defattr);
    420 	else
    421 #endif
    422 		wsdisplay_cnattach(&hpcfb_console_wsscreen, &hpcfb_console_dc,
    423 		    0, 0, defattr);
    424 	hpcfbconsole = 1;
    425 
    426 	return (0);
    427 }
    428 
    429 int
    430 hpcfb_init(struct hpcfb_fbconf *fbconf,	struct hpcfb_devconfig *dc)
    431 {
    432 	struct rasops_info *ri;
    433 	vaddr_t fbaddr;
    434 
    435 	fbaddr = (vaddr_t)fbconf->hf_baseaddr;
    436 	dc->dc_fbaddr = (u_char *)fbaddr;
    437 
    438 	/* init rasops */
    439 	ri = &dc->dc_rinfo;
    440 	memset(ri, 0, sizeof(struct rasops_info));
    441 	ri->ri_depth = fbconf->hf_pixel_width;
    442 	ri->ri_bits = (void *)fbaddr;
    443 	ri->ri_width = fbconf->hf_width;
    444 	ri->ri_height = fbconf->hf_height;
    445 	ri->ri_stride = fbconf->hf_bytes_per_line;
    446 #if 0
    447 	ri->ri_flg = RI_FORCEMONO | RI_CURSOR;
    448 #else
    449 	ri->ri_flg = RI_CURSOR;
    450 #endif
    451 	if (dc == &hpcfb_console_dc)
    452 		ri->ri_flg |= RI_NO_AUTO;
    453 
    454 	switch (ri->ri_depth) {
    455 	case 8:
    456 		if (32 <= fbconf->hf_pack_width &&
    457 		    (fbconf->hf_order_flags & HPCFB_REVORDER_BYTE) &&
    458 		    (fbconf->hf_order_flags & HPCFB_REVORDER_WORD)) {
    459 			ri->ri_flg |= RI_BSWAP;
    460 		}
    461 		break;
    462 	default:
    463 		if (fbconf->hf_order_flags & HPCFB_REVORDER_BYTE) {
    464 #if BYTE_ORDER == BIG_ENDIAN
    465 			ri->ri_flg |= RI_BSWAP;
    466 #endif
    467 		} else {
    468 #if BYTE_ORDER == LITTLE_ENDIAN
    469 			ri->ri_flg |= RI_BSWAP;
    470 #endif
    471 		}
    472 		break;
    473 	}
    474 
    475 	if (fbconf->hf_class == HPCFB_CLASS_RGBCOLOR) {
    476 		ri->ri_rnum = fbconf->hf_u.hf_rgb.hf_red_width;
    477 		ri->ri_rpos = fbconf->hf_u.hf_rgb.hf_red_shift;
    478 		ri->ri_gnum = fbconf->hf_u.hf_rgb.hf_green_width;
    479 		ri->ri_gpos = fbconf->hf_u.hf_rgb.hf_green_shift;
    480 		ri->ri_bnum = fbconf->hf_u.hf_rgb.hf_blue_width;
    481 		ri->ri_bpos = fbconf->hf_u.hf_rgb.hf_blue_shift;
    482 	}
    483 
    484 	if (rasops_init(ri, HPCFB_MAX_ROW, HPCFB_MAX_COLUMN)) {
    485 		aprint_error_dev(dc->dc_sc->sc_dev, "rasops_init() failed!");
    486 		return -1;
    487 	}
    488 
    489 	/* over write color map of rasops */
    490 	hpcfb_cmap_reorder (fbconf, dc);
    491 
    492 	dc->dc_curx = -1;
    493 	dc->dc_cury = -1;
    494 	dc->dc_rows = dc->dc_rinfo.ri_rows;
    495 	dc->dc_cols = dc->dc_rinfo.ri_cols;
    496 #ifdef HPCFB_JUMP
    497 	dc->dc_max_row = 0;
    498 	dc->dc_min_row = dc->dc_rows;
    499 	dc->dc_scroll = 0;
    500 	callout_init(&dc->dc_scroll_ch, 0);
    501 #endif /* HPCFB_JUMP */
    502 	dc->dc_memsize = ri->ri_stride * ri->ri_height;
    503 	/* hook rasops in hpcfb_ops */
    504 	rasops_emul = ri->ri_ops; /* struct copy */
    505 	ri->ri_ops = hpcfb_emulops; /* struct copy */
    506 
    507 	return (0);
    508 }
    509 
    510 static void
    511 hpcfb_cmap_reorder(struct hpcfb_fbconf *fbconf, struct hpcfb_devconfig *dc)
    512 {
    513 	struct rasops_info *ri = &dc->dc_rinfo;
    514 	int reverse = fbconf->hf_access_flags & HPCFB_ACCESS_REVERSE;
    515 	int *cmap = ri->ri_devcmap;
    516 	int i, j, bg, fg, tmp;
    517 
    518 	/*
    519 	 * Set foreground and background so that the screen
    520 	 * looks black on white.
    521 	 * Normally, black = 00 and white = ff.
    522 	 * HPCFB_ACCESS_REVERSE means black = ff and white = 00.
    523 	 */
    524 	switch (fbconf->hf_pixel_width) {
    525 	case 1:
    526 		/* FALLTHROUGH */
    527 	case 2:
    528 		/* FALLTHROUGH */
    529 	case 4:
    530 		if (reverse) {
    531 			bg = 0;
    532 			fg = ~0;
    533 		} else {
    534 			bg = ~0;
    535 			fg = 0;
    536 		}
    537 		/* for gray-scale LCD, hi-contrast color map */
    538 		cmap[0] = bg;
    539 		for (i = 1; i < 16; i++)
    540 			cmap[i] = fg;
    541 		break;
    542 	case 8:
    543 		/* FALLTHROUGH */
    544 	case 16:
    545 		if (reverse) {
    546 			for (i = 0, j = 15; i < 8; i++, j--) {
    547 				tmp = cmap[i];
    548 				cmap[i] = cmap[j];
    549 				cmap[j] = tmp;
    550 			}
    551 		}
    552 		break;
    553 	}
    554 }
    555 
    556 int
    557 hpcfb_ioctl(void *v, void *vs, u_long cmd, void *data, int flag,
    558 	struct lwp *l)
    559 {
    560 	struct hpcfb_softc *sc = v;
    561 	struct hpcfb_devconfig *dc = sc->sc_dc;
    562 	struct wsdisplay_fbinfo *wdf;
    563 
    564 	DPRINTF(("hpcfb_ioctl(cmd=0x%lx)\n", cmd));
    565 	switch (cmd) {
    566 	case WSDISPLAYIO_GTYPE:
    567 		*(u_int *)data = WSDISPLAY_TYPE_HPCFB;
    568 		return (0);
    569 
    570 	case WSDISPLAYIO_GINFO:
    571 		wdf = (void *)data;
    572 		wdf->height = dc->dc_rinfo.ri_height;
    573 		wdf->width = dc->dc_rinfo.ri_width;
    574 		wdf->depth = dc->dc_rinfo.ri_depth;
    575 		wdf->cmsize = 256;	/* XXXX */
    576 		return (0);
    577 
    578 	case WSDISPLAYIO_LINEBYTES:
    579 		*(u_int *)data = dc->dc_rinfo.ri_stride;
    580 		return 0;
    581 
    582 	case WSDISPLAYIO_SMODE:
    583 		if (*(int *)data == WSDISPLAYIO_MODE_EMUL){
    584 			if (sc->sc_mapping){
    585 				sc->sc_mapping = 0;
    586 				if (dc->dc_state&HPCFB_DC_DRAWING)
    587 					dc->dc_state &= ~HPCFB_DC_ABORT;
    588 #ifdef HPCFB_FORCE_REDRAW
    589 				hpcfb_refresh_screen(sc);
    590 #else
    591 				dc->dc_state |= HPCFB_DC_UPDATEALL;
    592 #endif
    593 			}
    594 		} else {
    595 			if (!sc->sc_mapping) {
    596 				sc->sc_mapping = 1;
    597 				dc->dc_state |= HPCFB_DC_ABORT;
    598 			}
    599 			sc->sc_mapping = 1;
    600 		}
    601 		if (sc && sc->sc_accessops->iodone)
    602 			(*sc->sc_accessops->iodone)(sc->sc_accessctx);
    603 		return (0);
    604 
    605 	case WSDISPLAYIO_GETCMAP:
    606 	case WSDISPLAYIO_PUTCMAP:
    607 	case WSDISPLAYIO_SVIDEO:
    608 	case WSDISPLAYIO_GVIDEO:
    609 	case WSDISPLAYIO_GETPARAM:
    610 	case WSDISPLAYIO_SETPARAM:
    611 	case HPCFBIO_GCONF:
    612 	case HPCFBIO_SCONF:
    613 	case HPCFBIO_GDSPCONF:
    614 	case HPCFBIO_SDSPCONF:
    615 	case HPCFBIO_GOP:
    616 	case HPCFBIO_SOP:
    617 		return ((*sc->sc_accessops->ioctl)(sc->sc_accessctx,
    618 		    cmd, data, flag, l));
    619 
    620 	default:
    621 		if (IOCGROUP(cmd) != 't')
    622 			DPRINTF(("%s(%d): hpcfb_ioctl(%lx, %lx) grp=%c num=%ld\n",
    623 			    __FILE__, __LINE__,
    624 			    cmd, (u_long)data, (char)IOCGROUP(cmd), cmd&0xff));
    625 		break;
    626 	}
    627 
    628 	return (EPASSTHROUGH); /* Inappropriate ioctl for device */
    629 }
    630 
    631 paddr_t
    632 hpcfb_mmap(void *v, void *vs, off_t offset, int prot)
    633 {
    634 	struct hpcfb_softc *sc = v;
    635 
    636 	return ((*sc->sc_accessops->mmap)(sc->sc_accessctx, offset, prot));
    637 }
    638 
    639 static void
    640 hpcfb_power(int why, void *arg)
    641 {
    642 	struct hpcfb_softc *sc = arg;
    643 
    644 	if (sc->sc_dc == NULL)
    645 		return;	/* You have no screen yet. */
    646 
    647 	switch (why) {
    648 	case PWR_STANDBY:
    649 		break;
    650 	case PWR_SOFTSUSPEND: {
    651 		struct wsdisplay_softc *wsc = device_private(sc->sc_wsdisplay);
    652 
    653 		sc->sc_screen_resumed = wsdisplay_getactivescreen(wsc);
    654 
    655 		if (wsdisplay_switch(sc->sc_wsdisplay,
    656 		    WSDISPLAY_NULLSCREEN, 1 /* waitok */) == 0) {
    657 			wsscreen_switchwait(wsc, WSDISPLAY_NULLSCREEN);
    658 		} else {
    659 			sc->sc_screen_resumed = WSDISPLAY_NULLSCREEN;
    660 		}
    661 
    662 		sc->sc_dc->dc_state &= ~HPCFB_DC_CURRENT;
    663 		break;
    664 	    }
    665 	case PWR_SOFTRESUME:
    666 		sc->sc_dc->dc_state |= HPCFB_DC_CURRENT;
    667 		if (sc->sc_screen_resumed != WSDISPLAY_NULLSCREEN)
    668 			wsdisplay_switch(sc->sc_wsdisplay,
    669 			    sc->sc_screen_resumed, 1 /* waitok */);
    670 		break;
    671 	}
    672 }
    673 
    674 static bool
    675 hpcfb_suspend(device_t self, const pmf_qual_t *qual)
    676 {
    677 	struct hpcfb_softc *sc = device_private(self);
    678 
    679 	hpcfb_power(PWR_SOFTSUSPEND, sc);
    680 	return true;
    681 }
    682 
    683 static bool
    684 hpcfb_resume(device_t self, const pmf_qual_t *qual)
    685 {
    686 	struct hpcfb_softc *sc = device_private(self);
    687 
    688 	hpcfb_power(PWR_SOFTRESUME, sc);
    689 	return true;
    690 }
    691 
    692 void
    693 hpcfb_refresh_screen(struct hpcfb_softc *sc)
    694 {
    695 	struct hpcfb_devconfig *dc = sc->sc_dc;
    696 	int x, y;
    697 
    698 	DPRINTF(("hpcfb_refresh_screen()\n"));
    699 	if (dc == NULL)
    700 		return;
    701 
    702 #ifdef HPCFB_JUMP
    703 	if (dc->dc_state&HPCFB_DC_SCROLLPENDING) {
    704 		dc->dc_state &= ~HPCFB_DC_SCROLLPENDING;
    705 		dc->dc_state &= ~HPCFB_DC_UPDATE;
    706 		callout_stop(&dc->dc_scroll_ch);
    707 	}
    708 #endif /* HPCFB_JUMP */
    709 	/*
    710 	 * refresh screen
    711 	 */
    712 	dc->dc_state &= ~HPCFB_DC_UPDATEALL;
    713 	x = dc->dc_curx;
    714 	y = dc->dc_cury;
    715 	if (0 <= x && 0 <= y)
    716 		hpcfb_cursor_raw(dc, 0,  y, x); /* disable cursor */
    717 	/* redraw all text */
    718 	hpcfb_redraw(dc, 0, dc->dc_rows, 1);
    719 	if (0 <= x && 0 <= y)
    720 		hpcfb_cursor_raw(dc, 1,  y, x); /* enable cursor */
    721 }
    722 
    723 static int
    724 hpcfb_alloc_screen(void *v, const struct wsscreen_descr *type,
    725 		   void **cookiep, int *curxp, int *curyp, long *attrp)
    726 {
    727 	struct hpcfb_softc *sc = v;
    728 	struct hpcfb_devconfig *dc;
    729 
    730 	DPRINTF(("%s(%d): hpcfb_alloc_screen()\n", __FILE__, __LINE__));
    731 
    732 	dc = malloc(sizeof(*dc), M_DEVBUF, M_WAITOK|M_ZERO);
    733 	if (dc == NULL)
    734 		return ENOMEM;
    735 
    736 	dc->dc_sc = sc;
    737 	if (hpcfb_init(&sc->sc_fbconflist[0], dc) != 0) {
    738 		free(dc, M_DEVBUF);
    739 		return EINVAL;
    740 	}
    741 	if (sc->sc_accessops->font) {
    742 		sc->sc_accessops->font(sc->sc_accessctx,
    743 		    dc->dc_rinfo.ri_font);
    744 	}
    745 	/* Set video chip dependent CLUT if any. */
    746 	if (sc->sc_accessops->setclut)
    747 		sc->sc_accessops->setclut(sc->sc_accessctx, &dc->dc_rinfo);
    748 	printf("hpcfb: %dx%d pixels, %d colors, %dx%d chars\n",
    749 	    dc->dc_rinfo.ri_width, dc->dc_rinfo.ri_height,
    750 	    (1 << dc->dc_rinfo.ri_depth),
    751 	    dc->dc_rinfo.ri_cols, dc->dc_rinfo.ri_rows);
    752 
    753 	/*
    754 	 * XXX, wsdisplay won't reffer the information in wsscreen_descr
    755 	 * structure until alloc_screen will be called, at least, under
    756 	 * current implementation...
    757 	 */
    758 	hpcfb_stdscreen.nrows = dc->dc_rows;
    759         hpcfb_stdscreen.ncols = dc->dc_cols;
    760 	hpcfb_stdscreen.capabilities = dc->dc_rinfo.ri_caps;
    761 
    762 	dc->dc_fbaddr = dc->dc_rinfo.ri_bits;
    763 	dc->dc_rows = dc->dc_rinfo.ri_rows;
    764 	dc->dc_cols = dc->dc_rinfo.ri_cols;
    765 	dc->dc_memsize = dc->dc_rinfo.ri_stride * dc->dc_rinfo.ri_height;
    766 
    767 	dc->dc_curx = -1;
    768 	dc->dc_cury = -1;
    769 	dc->dc_tvram = malloc(sizeof(struct hpcfb_tvrow)*dc->dc_rows,
    770 	    M_DEVBUF, M_WAITOK|M_ZERO);
    771 	if (dc->dc_tvram == NULL){
    772 		free(dc, M_DEVBUF);
    773 		return (ENOMEM);
    774 	}
    775 
    776 	*curxp = 0;
    777 	*curyp = 0;
    778 	*cookiep = dc;
    779 	hpcfb_allocattr(*cookiep, WSCOL_WHITE, WSCOL_BLACK, 0, attrp);
    780 	DPRINTF(("%s(%d): hpcfb_alloc_screen(): %p\n",
    781 	    __FILE__, __LINE__, dc));
    782 
    783 	return (0);
    784 }
    785 
    786 static void
    787 hpcfb_free_screen(void *v, void *cookie)
    788 {
    789 	struct hpcfb_devconfig *dc = cookie;
    790 
    791 	DPRINTF(("%s(%d): hpcfb_free_screen(%p)\n",
    792 	    __FILE__, __LINE__, cookie));
    793 #ifdef DIAGNOSTIC
    794 	if (dc == &hpcfb_console_dc)
    795 		panic("hpcfb_free_screen: console");
    796 #endif
    797 	free(dc->dc_tvram, M_DEVBUF);
    798 	free(dc, M_DEVBUF);
    799 }
    800 
    801 static int
    802 hpcfb_show_screen(void *v, void *cookie, int waitok,
    803     void (*cb)(void *, int, int), void *cbarg)
    804 {
    805 	struct hpcfb_softc *sc = v;
    806 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
    807 	struct hpcfb_devconfig *odc;
    808 
    809 	DPRINTF(("%s(%d): hpcfb_show_screen(%p)\n",
    810 	    __FILE__, __LINE__, dc));
    811 
    812 	odc = sc->sc_dc;
    813 
    814 	if (dc == NULL || odc == dc) {
    815 		hpcfb_refresh_screen(sc);
    816 		return (0);
    817 	}
    818 
    819 	if (odc != NULL) {
    820 		odc->dc_state |= HPCFB_DC_SWITCHREQ;
    821 
    822 		if ((odc->dc_state&HPCFB_DC_DRAWING) != 0) {
    823 			odc->dc_state |= HPCFB_DC_ABORT;
    824 		}
    825 	}
    826 
    827 	sc->sc_wantedscreen = cookie;
    828 	sc->sc_switchcb = cb;
    829 	sc->sc_switchcbarg = cbarg;
    830 	if (cb) {
    831 		callout_reset(&sc->sc_switch_callout, 0,
    832 		    (void(*)(void *))hpcfb_doswitch, sc);
    833 		return (EAGAIN);
    834 	}
    835 
    836 	hpcfb_doswitch(sc);
    837 	return (0);
    838 }
    839 
    840 void
    841 hpcfb_doswitch(struct hpcfb_softc *sc)
    842 {
    843 	struct hpcfb_devconfig *dc;
    844 	struct hpcfb_devconfig *odc;
    845 
    846 	DPRINTF(("hpcfb_doswitch()\n"));
    847 	odc = sc->sc_dc;
    848 	dc = sc->sc_wantedscreen;
    849 
    850 	if (!dc) {
    851 		(*sc->sc_switchcb)(sc->sc_switchcbarg, EIO, 0);
    852 		odc->dc_state &= ~HPCFB_DC_SWITCHREQ;
    853 		return;
    854 	}
    855 
    856 	if (odc == dc) {
    857 		odc->dc_state &= ~HPCFB_DC_SWITCHREQ;
    858 		return;
    859 	}
    860 
    861 	if (odc) {
    862 #ifdef HPCFB_JUMP
    863 		odc->dc_state |= HPCFB_DC_ABORT;
    864 #endif /* HPCFB_JUMP */
    865 
    866 		if (odc->dc_curx >= 0 && odc->dc_cury >= 0)
    867 			hpcfb_cursor_raw(odc, 0,  odc->dc_cury, odc->dc_curx);
    868 		/* disable cursor */
    869 		/* disable old screen */
    870 		odc->dc_state &= ~HPCFB_DC_CURRENT;
    871 		/* XXX, This is too dangerous.
    872 		odc->dc_rinfo.ri_bits = NULL;
    873 		*/
    874 	}
    875 	/* switch screen to new one */
    876 	dc->dc_state |= HPCFB_DC_CURRENT;
    877 	dc->dc_state &= ~HPCFB_DC_ABORT;
    878 	dc->dc_rinfo.ri_bits = dc->dc_fbaddr;
    879 	sc->sc_dc = dc;
    880 
    881 	/* redraw screen image */
    882 	hpcfb_refresh_screen(sc);
    883 
    884 	sc->sc_wantedscreen = NULL;
    885 	if (sc->sc_switchcb)
    886 		(*sc->sc_switchcb)(sc->sc_switchcbarg, 0, 0);
    887 
    888 	if (odc != NULL)
    889 		odc->dc_state &= ~HPCFB_DC_SWITCHREQ;
    890 	dc->dc_state &= ~HPCFB_DC_SWITCHREQ;
    891 	return;
    892 }
    893 
    894 static void
    895 hpcfb_pollc(void *v, int on)
    896 {
    897 	struct hpcfb_softc *sc = v;
    898 
    899 	if (sc == NULL)
    900 		return;
    901 	sc->sc_polling = on;
    902 	if (sc->sc_accessops->iodone)
    903 		(*sc->sc_accessops->iodone)(sc->sc_accessctx);
    904 	if (on) {
    905 		hpcfb_refresh_screen(sc);
    906 		if (sc->sc_accessops->iodone)
    907 			(*sc->sc_accessops->iodone)(sc->sc_accessctx);
    908 	}
    909 
    910 	return;
    911 }
    912 
    913 /*
    914  * cursor
    915  */
    916 void
    917 hpcfb_cursor(void *cookie, int on, int row, int col)
    918 {
    919 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
    920 
    921 	if (on) {
    922 		dc->dc_curx = col;
    923 		dc->dc_cury = row;
    924 	} else {
    925 		dc->dc_curx = -1;
    926 		dc->dc_cury = -1;
    927 	}
    928 
    929 	hpcfb_cursor_raw(cookie, on, row, col);
    930 }
    931 
    932 void
    933 hpcfb_cursor_raw(void *cookie, int on, int row, int col)
    934 {
    935 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
    936 	struct hpcfb_softc *sc = dc->dc_sc;
    937 	struct rasops_info *ri = &dc->dc_rinfo;
    938 	int curwidth, curheight;
    939 	int xoff, yoff;
    940 
    941 #ifdef HPCFB_JUMP
    942 	if (dc->dc_state&HPCFB_DC_SCROLLPENDING) {
    943 		dc->dc_state |= HPCFB_DC_UPDATE;
    944 		return;
    945 	}
    946 #endif /* HPCFB_JUMP */
    947 	if (!IS_DRAWABLE(dc)) {
    948 		return;
    949 	}
    950 
    951 	if (ri->ri_bits == NULL)
    952 		return;
    953 
    954 	dc->dc_state |= HPCFB_DC_DRAWING;
    955 	if (sc && sc->sc_accessops->cursor) {
    956 		xoff = col * ri->ri_font->fontwidth;
    957 		yoff = row * ri->ri_font->fontheight;
    958 		curheight = ri->ri_font->fontheight;
    959 		curwidth = ri->ri_font->fontwidth;
    960 		(*sc->sc_accessops->cursor)(sc->sc_accessctx,
    961 		    on, xoff, yoff, curwidth, curheight);
    962 	} else
    963 		rasops_emul.cursor(ri, on, row, col);
    964 	dc->dc_state &= ~HPCFB_DC_DRAWING;
    965 }
    966 
    967 /*
    968  * mapchar
    969  */
    970 int
    971 hpcfb_mapchar(void *cookie, int c, unsigned int *cp)
    972 {
    973 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
    974 	struct rasops_info *ri = &dc->dc_rinfo;
    975 
    976 	return (rasops_emul.mapchar(ri, c, cp));
    977 }
    978 
    979 /*
    980  * putchar
    981  */
    982 void
    983 hpcfb_tv_putchar(struct hpcfb_devconfig *dc, int row, int col, u_int uc,
    984     long attr)
    985 {
    986 	struct hpcfb_tvrow *vscn = dc->dc_tvram;
    987 	struct hpcfb_vchar *vc = &vscn[row].col[col];
    988 	struct hpcfb_vchar *vcb;
    989 
    990 	if (vscn == 0)
    991 		return;
    992 
    993 	dc->dc_state |= HPCFB_DC_TDRAWING;
    994 #ifdef HPCFB_JUMP
    995 	if (row < dc->dc_min_row)
    996 		dc->dc_min_row = row;
    997 	if (row > dc->dc_max_row)
    998 		dc->dc_max_row = row;
    999 
   1000 #endif /* HPCFB_JUMP */
   1001 	if (vscn[row].maxcol +1 == col)
   1002 		vscn[row].maxcol = col;
   1003 	else if (vscn[row].maxcol < col) {
   1004 		vcb =  &vscn[row].col[vscn[row].maxcol+1];
   1005 		memset(vcb, 0,
   1006 		    sizeof(struct hpcfb_vchar)*(col-vscn[row].maxcol-1));
   1007 		vscn[row].maxcol = col;
   1008 	}
   1009 	vc->c = uc;
   1010 	vc->attr = attr;
   1011 	dc->dc_state &= ~HPCFB_DC_TDRAWING;
   1012 #ifdef HPCFB_JUMP
   1013 	hpcfb_check_update(dc);
   1014 #endif /* HPCFB_JUMP */
   1015 }
   1016 
   1017 void
   1018 hpcfb_putchar(void *cookie, int row, int col, u_int uc, long attr)
   1019 {
   1020 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
   1021 	struct hpcfb_softc *sc = dc->dc_sc;
   1022 	struct rasops_info *ri = &dc->dc_rinfo;
   1023 	int xoff;
   1024 	int yoff;
   1025 	int fclr, uclr;
   1026 	struct wsdisplay_font *font;
   1027 
   1028 	hpcfb_tv_putchar(dc, row, col, uc, attr);
   1029 #ifdef HPCFB_JUMP
   1030 	if (dc->dc_state&HPCFB_DC_SCROLLPENDING) {
   1031 		dc->dc_state |= HPCFB_DC_UPDATE;
   1032 		return;
   1033 	}
   1034 #endif /* HPCFB_JUMP */
   1035 
   1036 	if (!IS_DRAWABLE(dc)) {
   1037 		return;
   1038 	}
   1039 
   1040 	if (ri->ri_bits == NULL)
   1041 		return;
   1042 
   1043 	dc->dc_state |= HPCFB_DC_DRAWING;
   1044 	if (sc && sc->sc_accessops->putchar
   1045 	    && (dc->dc_state&HPCFB_DC_CURRENT)) {
   1046 		font = ri->ri_font;
   1047 		yoff = row * ri->ri_font->fontheight;
   1048 		xoff =  col * ri->ri_font->fontwidth;
   1049 		fclr = ri->ri_devcmap[((u_int)attr >> 24) & 15];
   1050 		uclr = ri->ri_devcmap[((u_int)attr >> 16) & 15];
   1051 
   1052 		(*sc->sc_accessops->putchar)(sc->sc_accessctx,
   1053 		    xoff, yoff, font, fclr, uclr, uc, attr);
   1054 	} else
   1055 		rasops_emul.putchar(ri, row, col, uc, attr);
   1056 	dc->dc_state &= ~HPCFB_DC_DRAWING;
   1057 #ifdef HPCFB_JUMP
   1058 	hpcfb_check_update(dc);
   1059 #endif /* HPCFB_JUMP */
   1060 }
   1061 
   1062 /*
   1063  * copycols
   1064  */
   1065 void
   1066 hpcfb_tv_copycols(struct hpcfb_devconfig *dc, int row, int srccol, int dstcol,
   1067     int ncols)
   1068 {
   1069 	struct hpcfb_tvrow *vscn = dc->dc_tvram;
   1070 	struct hpcfb_vchar *svc = &vscn[row].col[srccol];
   1071 	struct hpcfb_vchar *dvc = &vscn[row].col[dstcol];
   1072 
   1073 	if (vscn == 0)
   1074 		return;
   1075 
   1076 	dc->dc_state |= HPCFB_DC_TDRAWING;
   1077 #ifdef HPCFB_JUMP
   1078 	if (row < dc->dc_min_row)
   1079 		dc->dc_min_row = row;
   1080 	if (row > dc->dc_max_row)
   1081 		dc->dc_max_row = row;
   1082 #endif /* HPCFB_JUMP */
   1083 
   1084 	memcpy(dvc, svc, ncols*sizeof(struct hpcfb_vchar));
   1085 	if (vscn[row].maxcol < srccol+ncols-1)
   1086 		vscn[row].maxcol = srccol+ncols-1;
   1087 	if (vscn[row].maxcol < dstcol+ncols-1)
   1088 		vscn[row].maxcol = dstcol+ncols-1;
   1089 	dc->dc_state &= ~HPCFB_DC_TDRAWING;
   1090 #ifdef HPCFB_JUMP
   1091 	hpcfb_check_update(dc);
   1092 #endif /* HPCFB_JUMP */
   1093 }
   1094 
   1095 void
   1096 hpcfb_copycols(void *cookie, int row, int srccol, int dstcol, int ncols)
   1097 {
   1098 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
   1099 	struct hpcfb_softc *sc = dc->dc_sc;
   1100 	struct rasops_info *ri = &dc->dc_rinfo;
   1101 	int srcxoff,dstxoff;
   1102 	int srcyoff,dstyoff;
   1103 	int height, width;
   1104 
   1105 	hpcfb_tv_copycols(dc, row, srccol, dstcol, ncols);
   1106 #ifdef HPCFB_JUMP
   1107 	if (dc->dc_state&HPCFB_DC_SCROLLPENDING) {
   1108 		dc->dc_state |= HPCFB_DC_UPDATE;
   1109 		return;
   1110 	}
   1111 #endif /* HPCFB_JUMP */
   1112 	if (!IS_DRAWABLE(dc)) {
   1113 		return;
   1114 	}
   1115 
   1116 	if (ri->ri_bits == NULL)
   1117 		return;
   1118 
   1119 	dc->dc_state |= HPCFB_DC_DRAWING;
   1120 	if (sc && sc->sc_accessops->bitblit
   1121 	    && (dc->dc_state&HPCFB_DC_CURRENT)) {
   1122 		srcxoff = srccol * ri->ri_font->fontwidth;
   1123 		srcyoff = row * ri->ri_font->fontheight;
   1124 		dstxoff = dstcol * ri->ri_font->fontwidth;
   1125 		dstyoff = row * ri->ri_font->fontheight;
   1126 		width = ncols * ri->ri_font->fontwidth;
   1127 		height = ri->ri_font->fontheight;
   1128 		(*sc->sc_accessops->bitblit)(sc->sc_accessctx,
   1129 		    srcxoff, srcyoff, dstxoff, dstyoff, height, width);
   1130 	} else
   1131 		rasops_emul.copycols(ri, row, srccol, dstcol, ncols);
   1132 	dc->dc_state &= ~HPCFB_DC_DRAWING;
   1133 #ifdef HPCFB_JUMP
   1134 	hpcfb_check_update(dc);
   1135 #endif /* HPCFB_JUMP */
   1136 }
   1137 
   1138 
   1139 /*
   1140  * erasecols
   1141  */
   1142 void
   1143 hpcfb_tv_erasecols(struct hpcfb_devconfig *dc,
   1144 		   int row, int startcol, int ncols, long attr)
   1145 {
   1146 	struct hpcfb_tvrow *vscn = dc->dc_tvram;
   1147 
   1148 	if (vscn == 0)
   1149 		return;
   1150 
   1151 	dc->dc_state |= HPCFB_DC_TDRAWING;
   1152 #ifdef HPCFB_JUMP
   1153 	if (row < dc->dc_min_row)
   1154 		dc->dc_min_row = row;
   1155 	if (row > dc->dc_max_row)
   1156 		dc->dc_max_row = row;
   1157 #endif /* HPCFB_JUMP */
   1158 
   1159 	vscn[row].maxcol = startcol-1;
   1160 	if (vscn[row].spacecol < startcol+ncols-1)
   1161 		vscn[row].spacecol = startcol+ncols-1;
   1162 	dc->dc_state &= ~HPCFB_DC_TDRAWING;
   1163 #ifdef HPCFB_JUMP
   1164 	hpcfb_check_update(dc);
   1165 #endif /* HPCFB_JUMP */
   1166 }
   1167 
   1168 void
   1169 hpcfb_erasecols(void *cookie, int row, int startcol, int ncols, long attr)
   1170 {
   1171 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
   1172 	struct hpcfb_softc *sc = dc->dc_sc;
   1173 	struct rasops_info *ri = &dc->dc_rinfo;
   1174 	int xoff, yoff;
   1175 	int width, height;
   1176 
   1177 	hpcfb_tv_erasecols(dc, row, startcol, ncols, attr);
   1178 #ifdef HPCFB_JUMP
   1179 	if (dc->dc_state&HPCFB_DC_SCROLLPENDING) {
   1180 		dc->dc_state |= HPCFB_DC_UPDATE;
   1181 		return;
   1182 	}
   1183 #endif /* HPCFB_JUMP */
   1184 	if (!IS_DRAWABLE(dc)) {
   1185 		return;
   1186 	}
   1187 
   1188 	if (ri->ri_bits == NULL)
   1189 		return;
   1190 
   1191 	dc->dc_state |= HPCFB_DC_DRAWING;
   1192 	if (sc && sc->sc_accessops->erase
   1193 	    && (dc->dc_state&HPCFB_DC_CURRENT)) {
   1194 		xoff = startcol * ri->ri_font->fontwidth;
   1195 		yoff = row * ri->ri_font->fontheight;
   1196 		width = ncols * ri->ri_font->fontwidth;
   1197 		height = ri->ri_font->fontheight;
   1198 		(*sc->sc_accessops->erase)(sc->sc_accessctx,
   1199 		    xoff, yoff, height, width, attr);
   1200 	} else
   1201 		rasops_emul.erasecols(ri, row, startcol, ncols, attr);
   1202 	dc->dc_state &= ~HPCFB_DC_DRAWING;
   1203 #ifdef HPCFB_JUMP
   1204 	hpcfb_check_update(dc);
   1205 #endif /* HPCFB_JUMP */
   1206 }
   1207 
   1208 /*
   1209  * Copy rows.
   1210  */
   1211 void
   1212 hpcfb_tv_copyrows(struct hpcfb_devconfig *dc, int src, int dst, int num)
   1213 {
   1214 	struct hpcfb_tvrow *vscn = dc->dc_tvram;
   1215 	struct hpcfb_tvrow *svc = &vscn[src];
   1216 	struct hpcfb_tvrow *dvc = &vscn[dst];
   1217 	int i;
   1218 	int d;
   1219 
   1220 	if (vscn == 0)
   1221 		return;
   1222 
   1223 	dc->dc_state |= HPCFB_DC_TDRAWING;
   1224 #ifdef HPCFB_JUMP
   1225 	if (dst < dc->dc_min_row)
   1226 		dc->dc_min_row = dst;
   1227 	if (dst + num > dc->dc_max_row)
   1228 		dc->dc_max_row = dst + num -1;
   1229 #endif /* HPCFB_JUMP */
   1230 
   1231 	if (svc > dvc)
   1232 		d = 1;
   1233 	else if (svc < dvc) {
   1234 		svc += num-1;
   1235 		dvc += num-1;
   1236 		d = -1;
   1237 	} else  {
   1238 		dc->dc_state &= ~HPCFB_DC_TDRAWING;
   1239 #ifdef HPCFB_JUMP
   1240 		hpcfb_check_update(dc);
   1241 #endif /* HPCFB_JUMP */
   1242 		return;
   1243 	}
   1244 
   1245 	for (i = 0; i < num; i++) {
   1246 		memcpy(&dvc->col[0], &svc->col[0], sizeof(struct hpcfb_vchar)*(svc->maxcol+1));
   1247 		if (svc->maxcol < dvc->maxcol && dvc->spacecol < dvc->maxcol)
   1248 			dvc->spacecol = dvc->maxcol;
   1249 		dvc->maxcol = svc->maxcol;
   1250 		svc+=d;
   1251 		dvc+=d;
   1252 	}
   1253 	dc->dc_state &= ~HPCFB_DC_TDRAWING;
   1254 #ifdef HPCFB_JUMP
   1255 	hpcfb_check_update(dc);
   1256 #endif /* HPCFB_JUMP */
   1257 }
   1258 
   1259 void
   1260 hpcfb_redraw(void *cookie, int row, int num, int all)
   1261 {
   1262 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
   1263 	struct rasops_info *ri = &dc->dc_rinfo;
   1264 	int cols;
   1265 	struct hpcfb_tvrow *vscn = dc->dc_tvram;
   1266 	struct hpcfb_vchar *svc;
   1267 	int i, j;
   1268 
   1269 #ifdef HPCFB_JUMP
   1270 	if (dc->dc_state&HPCFB_DC_SCROLLPENDING) {
   1271 		dc->dc_state |= HPCFB_DC_UPDATE;
   1272 		return;
   1273 	}
   1274 #endif /* HPCFB_JUMP */
   1275 	if (dc->dc_sc != NULL
   1276 	    && !dc->dc_sc->sc_polling
   1277 	    && dc->dc_sc->sc_mapping)
   1278 		return;
   1279 
   1280 	dc->dc_state &= ~HPCFB_DC_ABORT;
   1281 
   1282 	if (vscn == 0)
   1283 		return;
   1284 
   1285 	if (!IS_DRAWABLE(dc)) {
   1286 		return;
   1287 	}
   1288 
   1289 	if (ri->ri_bits == NULL)
   1290 		return;
   1291 
   1292 	dc->dc_state |= HPCFB_DC_DRAWING;
   1293 	dc->dc_state |= HPCFB_DC_TDRAWING;
   1294 	for (i = 0; i < num; i++) {
   1295 		if (dc->dc_state&HPCFB_DC_ABORT)
   1296 			break;
   1297 		if ((dc->dc_state&HPCFB_DC_CURRENT) == 0)
   1298 			break;
   1299 		cols = vscn[row+i].maxcol;
   1300 		for (j = 0; j <= cols; j++) {
   1301 			if (dc->dc_state&HPCFB_DC_ABORT)
   1302 				continue;
   1303 			if ((dc->dc_state&HPCFB_DC_CURRENT) == 0)
   1304 				continue;
   1305 			svc = &vscn[row+i].col[j];
   1306 			rasops_emul.putchar(ri, row + i, j, svc->c, svc->attr);
   1307 		}
   1308 		if (all)
   1309 			cols = dc->dc_cols-1;
   1310 		else
   1311 			cols = vscn[row+i].spacecol;
   1312 		for (; j <= cols; j++) {
   1313 			if (dc->dc_state&HPCFB_DC_ABORT)
   1314 				continue;
   1315 			if ((dc->dc_state&HPCFB_DC_CURRENT) == 0)
   1316 				continue;
   1317 			rasops_emul.putchar(ri, row + i, j, ' ', 0);
   1318 		}
   1319 		vscn[row+i].spacecol = 0;
   1320 	}
   1321 	if (dc->dc_state&HPCFB_DC_ABORT)
   1322 		dc->dc_state &= ~HPCFB_DC_ABORT;
   1323 	dc->dc_state &= ~HPCFB_DC_DRAWING;
   1324 	dc->dc_state &= ~HPCFB_DC_TDRAWING;
   1325 #ifdef HPCFB_JUMP
   1326 	hpcfb_check_update(dc);
   1327 #endif /* HPCFB_JUMP */
   1328 }
   1329 
   1330 #ifdef HPCFB_JUMP
   1331 void
   1332 hpcfb_update(void *v)
   1333 {
   1334 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)v;
   1335 
   1336 	/* callout_stop(&dc->dc_scroll_ch); */
   1337 	dc->dc_state &= ~HPCFB_DC_SCROLLPENDING;
   1338 	if (dc->dc_curx > 0 && dc->dc_cury > 0)
   1339 		hpcfb_cursor_raw(dc, 0,  dc->dc_cury, dc->dc_curx);
   1340 	if ((dc->dc_state&HPCFB_DC_UPDATEALL)) {
   1341 		hpcfb_redraw(dc, 0, dc->dc_rows, 1);
   1342 		dc->dc_state &= ~(HPCFB_DC_UPDATE|HPCFB_DC_UPDATEALL);
   1343 	} else if ((dc->dc_state&HPCFB_DC_UPDATE)) {
   1344 		hpcfb_redraw(dc, dc->dc_min_row,
   1345 		    dc->dc_max_row - dc->dc_min_row, 0);
   1346 		dc->dc_state &= ~HPCFB_DC_UPDATE;
   1347 	} else {
   1348 		hpcfb_redraw(dc, dc->dc_scroll_dst, dc->dc_scroll_num, 0);
   1349 	}
   1350 	if (dc->dc_curx > 0 && dc->dc_cury > 0)
   1351 		hpcfb_cursor_raw(dc, 1,  dc->dc_cury, dc->dc_curx);
   1352 }
   1353 
   1354 void
   1355 hpcfb_do_scroll(void *v)
   1356 {
   1357 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)v;
   1358 
   1359 	dc->dc_state |= HPCFB_DC_SCRTHREAD;
   1360 	if (dc->dc_state&(HPCFB_DC_DRAWING|HPCFB_DC_TDRAWING))
   1361 		dc->dc_state |= HPCFB_DC_SCRDELAY;
   1362 	else if (dc->dc_sc != NULL && dc->dc_sc->sc_thread)
   1363 		wakeup(dc->dc_sc);
   1364 	else if (dc->dc_sc != NULL && !dc->dc_sc->sc_mapping) {
   1365 		/* draw only EMUL mode */
   1366 		hpcfb_update(v);
   1367 	}
   1368 	dc->dc_state &= ~HPCFB_DC_SCRTHREAD;
   1369 }
   1370 
   1371 void
   1372 hpcfb_check_update(void *v)
   1373 {
   1374 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)v;
   1375 
   1376 	if (dc->dc_sc != NULL
   1377 	    && dc->dc_sc->sc_polling
   1378 	    && (dc->dc_state&HPCFB_DC_SCROLLPENDING)){
   1379 		callout_stop(&dc->dc_scroll_ch);
   1380 		dc->dc_state &= ~HPCFB_DC_SCRDELAY;
   1381 		hpcfb_update(v);
   1382 	}
   1383 	else if (dc->dc_state&HPCFB_DC_SCRDELAY){
   1384 		dc->dc_state &= ~HPCFB_DC_SCRDELAY;
   1385 		hpcfb_update(v);
   1386 	} else if (dc->dc_state&HPCFB_DC_UPDATEALL){
   1387 		dc->dc_state &= ~HPCFB_DC_UPDATEALL;
   1388 		hpcfb_update(v);
   1389 	}
   1390 }
   1391 #endif /* HPCFB_JUMP */
   1392 
   1393 void
   1394 hpcfb_copyrows(void *cookie, int src, int dst, int num)
   1395 {
   1396 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
   1397 	struct rasops_info *ri = &dc->dc_rinfo;
   1398 	struct hpcfb_softc *sc = dc->dc_sc;
   1399 	int srcyoff, dstyoff;
   1400 	int width, height;
   1401 
   1402 	hpcfb_tv_copyrows(cookie, src, dst, num);
   1403 
   1404 	if (!IS_DRAWABLE(dc)) {
   1405 		return;
   1406 	}
   1407 
   1408 	if (ri->ri_bits == NULL)
   1409 		return;
   1410 
   1411 	if (sc && sc->sc_accessops->bitblit
   1412 	    && (dc->dc_state&HPCFB_DC_CURRENT)) {
   1413 		dc->dc_state |= HPCFB_DC_DRAWING;
   1414 		srcyoff = src * ri->ri_font->fontheight;
   1415 		dstyoff = dst * ri->ri_font->fontheight;
   1416 		width = dc->dc_cols * ri->ri_font->fontwidth;
   1417 		height = num * ri->ri_font->fontheight;
   1418 		(*sc->sc_accessops->bitblit)(sc->sc_accessctx,
   1419 		    0, srcyoff, 0, dstyoff, height, width);
   1420 		dc->dc_state &= ~HPCFB_DC_DRAWING;
   1421 	}
   1422 	else {
   1423 #ifdef HPCFB_JUMP
   1424 		if (sc && sc->sc_polling) {
   1425 			hpcfb_check_update(dc);
   1426 		} else if ((dc->dc_state&HPCFB_DC_SCROLLPENDING) == 0) {
   1427 			dc->dc_state |= HPCFB_DC_SCROLLPENDING;
   1428 			dc->dc_scroll = 1;
   1429 			dc->dc_scroll_src = src;
   1430 			dc->dc_scroll_dst = dst;
   1431 			dc->dc_scroll_num = num;
   1432 			callout_reset(&dc->dc_scroll_ch, hz/100, &hpcfb_do_scroll, dc);
   1433 			return;
   1434 		} else if (dc->dc_scroll++ < dc->dc_rows/HPCFB_MAX_JUMP) {
   1435 			dc->dc_state |= HPCFB_DC_UPDATE;
   1436 			return;
   1437 		} else {
   1438 			dc->dc_state &= ~HPCFB_DC_SCROLLPENDING;
   1439 			callout_stop(&dc->dc_scroll_ch);
   1440 		}
   1441 		if (dc->dc_state&HPCFB_DC_UPDATE) {
   1442 			dc->dc_state &= ~HPCFB_DC_UPDATE;
   1443 			hpcfb_redraw(cookie, dc->dc_min_row,
   1444 			    dc->dc_max_row - dc->dc_min_row, 0);
   1445 			dc->dc_max_row = 0;
   1446 			dc->dc_min_row = dc->dc_rows;
   1447 			if (dc->dc_curx > 0 && dc->dc_cury > 0)
   1448 				hpcfb_cursor(dc, 1,  dc->dc_cury, dc->dc_curx);
   1449 			return;
   1450 		}
   1451 #endif /* HPCFB_JUMP */
   1452 		hpcfb_redraw(cookie, dst, num, 0);
   1453 	}
   1454 #ifdef HPCFB_JUMP
   1455 	hpcfb_check_update(dc);
   1456 #endif /* HPCFB_JUMP */
   1457 }
   1458 
   1459 /*
   1460  * eraserows
   1461  */
   1462 void
   1463 hpcfb_tv_eraserows(struct hpcfb_devconfig *dc,
   1464 		   int row, int nrow, long attr)
   1465 {
   1466 	struct hpcfb_tvrow *vscn = dc->dc_tvram;
   1467 	int cols;
   1468 	int i;
   1469 
   1470 	if (vscn == 0)
   1471 		return;
   1472 
   1473 	dc->dc_state |= HPCFB_DC_TDRAWING;
   1474 	dc->dc_state &= ~HPCFB_DC_TDRAWING;
   1475 #ifdef HPCFB_JUMP
   1476 	if (row < dc->dc_min_row)
   1477 		dc->dc_min_row = row;
   1478 	if (row + nrow > dc->dc_max_row)
   1479 		dc->dc_max_row = row + nrow;
   1480 #endif /* HPCFB_JUMP */
   1481 
   1482 	for (i = 0; i < nrow; i++) {
   1483 		cols = vscn[row+i].maxcol;
   1484 		if (vscn[row+i].spacecol < cols)
   1485 			vscn[row+i].spacecol = cols;
   1486 		vscn[row+i].maxcol = -1;
   1487 	}
   1488 #ifdef HPCFB_JUMP
   1489 	hpcfb_check_update(dc);
   1490 #endif /* HPCFB_JUMP */
   1491 }
   1492 
   1493 void
   1494 hpcfb_eraserows(void *cookie, int row, int nrow, long attr)
   1495 {
   1496 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
   1497 	struct hpcfb_softc *sc = dc->dc_sc;
   1498 	struct rasops_info *ri = &dc->dc_rinfo;
   1499 	int yoff;
   1500 	int width;
   1501 	int height;
   1502 
   1503 	hpcfb_tv_eraserows(dc, row, nrow, attr);
   1504 #ifdef HPCFB_JUMP
   1505 	if (dc->dc_state&HPCFB_DC_SCROLLPENDING) {
   1506 		dc->dc_state |= HPCFB_DC_UPDATE;
   1507 		return;
   1508 	}
   1509 #endif /* HPCFB_JUMP */
   1510 	if (!IS_DRAWABLE(dc)) {
   1511 		return;
   1512 	}
   1513 
   1514 	if (ri->ri_bits == NULL)
   1515 		return;
   1516 
   1517 	dc->dc_state |= HPCFB_DC_DRAWING;
   1518 	if (sc && sc->sc_accessops->erase
   1519 	    && (dc->dc_state&HPCFB_DC_CURRENT)) {
   1520 		yoff = row * ri->ri_font->fontheight;
   1521 		width = dc->dc_cols * ri->ri_font->fontwidth;
   1522 		height = nrow * ri->ri_font->fontheight;
   1523 		(*sc->sc_accessops->erase)(sc->sc_accessctx,
   1524 		    0, yoff, height, width, attr);
   1525 	} else
   1526 		rasops_emul.eraserows(ri, row, nrow, attr);
   1527 	dc->dc_state &= ~HPCFB_DC_DRAWING;
   1528 #ifdef HPCFB_JUMP
   1529 	hpcfb_check_update(dc);
   1530 #endif /* HPCFB_JUMP */
   1531 }
   1532 
   1533 /*
   1534  * allocattr
   1535  */
   1536 int
   1537 hpcfb_allocattr(void *cookie, int fg, int bg, int flags, long *attrp)
   1538 {
   1539 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
   1540 	struct rasops_info *ri = &dc->dc_rinfo;
   1541 
   1542 	return (rasops_emul.allocattr(ri, fg, bg, flags, attrp));
   1543 }
   1544