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hpcfb.c revision 1.53.2.1
      1 /*	$NetBSD: hpcfb.c,v 1.53.2.1 2010/05/30 05:17:20 rmind 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 1.53.2.1 2010/05/30 05:17:20 rmind 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 <uvm/uvm_extern.h>
     65 
     66 #include <sys/bus.h>
     67 
     68 #include <dev/wscons/wsconsio.h>
     69 #include <dev/wscons/wsdisplayvar.h>
     70 #include <dev/wscons/wscons_callbacks.h>
     71 
     72 #include <dev/wsfont/wsfont.h>
     73 #include <dev/rasops/rasops.h>
     74 
     75 #include <dev/hpc/hpcfbvar.h>
     76 #include <dev/hpc/hpcfbio.h>
     77 
     78 #include "bivideo.h"
     79 #if NBIVIDEO > 0
     80 #include <dev/hpc/bivideovar.h>
     81 #endif
     82 
     83 #ifdef FBDEBUG
     84 int	hpcfb_debug = 0;
     85 #define	DPRINTF(arg)	if (hpcfb_debug) printf arg
     86 #else
     87 #define	DPRINTF(arg)	do {} while (/* CONSTCOND */ 0)
     88 #endif
     89 
     90 #ifndef HPCFB_MAX_COLUMN
     91 #define HPCFB_MAX_COLUMN 130
     92 #endif /* HPCFB_MAX_COLUMN */
     93 #ifndef HPCFB_MAX_ROW
     94 #define HPCFB_MAX_ROW 80
     95 #endif /* HPCFB_MAX_ROW */
     96 
     97 /*
     98  * currently experimental
     99 #define HPCFB_JUMP
    100 */
    101 
    102 struct hpcfb_vchar {
    103 	u_int c;
    104 	long attr;
    105 };
    106 
    107 struct hpcfb_tvrow {
    108 	int maxcol;
    109 	int spacecol;
    110 	struct hpcfb_vchar col[HPCFB_MAX_COLUMN];
    111 };
    112 
    113 struct hpcfb_devconfig {
    114 	struct rasops_info	dc_rinfo;	/* rasops information */
    115 
    116 	int		dc_blanked;	/* currently had video disabled */
    117 	struct hpcfb_softc *dc_sc;
    118 	int dc_rows;
    119 	int dc_cols;
    120 	struct hpcfb_tvrow *dc_tvram;
    121 	int dc_curx;
    122 	int dc_cury;
    123 #ifdef HPCFB_JUMP
    124 	int dc_min_row;
    125 	int dc_max_row;
    126 	int dc_scroll;
    127 	struct callout dc_scroll_ch;
    128 	int dc_scroll_src;
    129 	int dc_scroll_dst;
    130 	int dc_scroll_num;
    131 #endif /* HPCFB_JUMP */
    132 	volatile int dc_state;
    133 #define HPCFB_DC_CURRENT		0x80000000
    134 #define HPCFB_DC_DRAWING		0x01	/* drawing raster ops */
    135 #define HPCFB_DC_TDRAWING		0x02	/* drawing tvram */
    136 #define HPCFB_DC_SCROLLPENDING		0x04	/* scroll is pending */
    137 #define HPCFB_DC_UPDATE			0x08	/* tvram update */
    138 #define HPCFB_DC_SCRDELAY		0x10	/* scroll time but delay it */
    139 #define HPCFB_DC_SCRTHREAD		0x20	/* in scroll thread or callout */
    140 #define HPCFB_DC_UPDATEALL		0x40	/* need to redraw all */
    141 #define HPCFB_DC_ABORT			0x80	/* abort redrawing */
    142 #define	HPCFB_DC_SWITCHREQ		0x100	/* switch request exist */
    143 	int	dc_memsize;
    144 	u_char *dc_fbaddr;
    145 };
    146 
    147 #define IS_DRAWABLE(dc) \
    148 	(((dc)->dc_state&HPCFB_DC_CURRENT)&& \
    149 	 (((dc)->dc_state&(HPCFB_DC_DRAWING|HPCFB_DC_SWITCHREQ)) == 0))
    150 
    151 #define HPCFB_MAX_SCREEN 5
    152 #define HPCFB_MAX_JUMP 5
    153 
    154 struct hpcfb_softc {
    155 	device_t sc_dev;
    156 	struct	hpcfb_devconfig *sc_dc;	/* device configuration */
    157 	const struct hpcfb_accessops	*sc_accessops;
    158 	void *sc_accessctx;
    159 	void *sc_powerhook;	/* power management hook */
    160 	device_t sc_wsdisplay;
    161 	int sc_screen_resumed;
    162 	int sc_polling;
    163 	int sc_mapping;
    164 	struct proc *sc_thread;
    165 	void *sc_wantedscreen;
    166 	void (*sc_switchcb)(void *, int, int);
    167 	void *sc_switchcbarg;
    168 	struct callout sc_switch_callout;
    169 	int sc_nfbconf;
    170 	struct hpcfb_fbconf *sc_fbconflist;
    171 };
    172 
    173 /*
    174  *  function prototypes
    175  */
    176 int	hpcfbmatch(device_t, cfdata_t, void *);
    177 void	hpcfbattach(device_t, device_t, void *);
    178 int	hpcfbprint(void *, const char *);
    179 
    180 int	hpcfb_ioctl(void *, void *, u_long, void *, int, struct lwp *);
    181 paddr_t	hpcfb_mmap(void *, void *, off_t, int);
    182 
    183 void	hpcfb_refresh_screen(struct hpcfb_softc *);
    184 void	hpcfb_doswitch(struct hpcfb_softc *);
    185 
    186 #ifdef HPCFB_JUMP
    187 static void	hpcfb_thread(void *);
    188 #endif /* HPCFB_JUMP */
    189 
    190 static int	hpcfb_init(struct hpcfb_fbconf *, struct hpcfb_devconfig *);
    191 static int	hpcfb_alloc_screen(void *, const struct wsscreen_descr *,
    192 		    void **, int *, int *, long *);
    193 static void	hpcfb_free_screen(void *, void *);
    194 static int	hpcfb_show_screen(void *, void *, int,
    195 		    void (*) (void *, int, int), void *);
    196 static void     hpcfb_pollc(void *, int);
    197 static void	hpcfb_cmap_reorder(struct hpcfb_fbconf *,
    198 		    struct hpcfb_devconfig *);
    199 
    200 static void	hpcfb_power(int, void *);
    201 static bool	hpcfb_suspend(device_t, const pmf_qual_t *);
    202 static bool	hpcfb_resume(device_t, const pmf_qual_t *);
    203 
    204 
    205 void    hpcfb_cursor(void *, int, int, int);
    206 int     hpcfb_mapchar(void *, int, unsigned int *);
    207 void    hpcfb_putchar(void *, int, int, u_int, long);
    208 void    hpcfb_copycols(void *, int, int, int, int);
    209 void    hpcfb_erasecols(void *, int, int, int, long);
    210 void    hpcfb_redraw(void *, int, int, int);
    211 void    hpcfb_copyrows(void *, int, int, int);
    212 void    hpcfb_eraserows(void *, int, int, long);
    213 int     hpcfb_allocattr(void *, int, int, int, long *);
    214 void    hpcfb_cursor_raw(void *, int, int, int);
    215 
    216 #ifdef HPCFB_JUMP
    217 void	hpcfb_update(void *);
    218 void	hpcfb_do_scroll(void *);
    219 void	hpcfb_check_update(void *);
    220 #endif /* HPCFB_JUMP */
    221 
    222 struct wsdisplay_emulops hpcfb_emulops = {
    223 	.cursor		= hpcfb_cursor,
    224 	.mapchar	= hpcfb_mapchar,
    225 	.putchar	= hpcfb_putchar,
    226 	.copycols	= hpcfb_copycols,
    227 	.erasecols	= hpcfb_erasecols,
    228 	.copyrows	= hpcfb_copyrows,
    229 	.eraserows	= hpcfb_eraserows,
    230 	.allocattr	= hpcfb_allocattr,
    231 	.replaceattr	= NULL,
    232 };
    233 
    234 /*
    235  *  static variables
    236  */
    237 CFATTACH_DECL_NEW(hpcfb, sizeof(struct hpcfb_softc),
    238     hpcfbmatch, hpcfbattach, NULL, NULL);
    239 
    240 struct wsscreen_descr hpcfb_stdscreen = {
    241 	.name		= "std",
    242 	.textops	= &hpcfb_emulops, /* XXX */
    243 	.capabilities	= WSSCREEN_REVERSE,
    244 	/* XXX: ncols/nrows will be filled in -- shouldn't, they are global */
    245 };
    246 
    247 const struct wsscreen_descr *_hpcfb_scrlist[] = {
    248 	&hpcfb_stdscreen,
    249 	/* XXX other formats, graphics screen? */
    250 };
    251 
    252 struct wsscreen_list hpcfb_screenlist = {
    253 	.nscreens = __arraycount(_hpcfb_scrlist),
    254 	.screens = _hpcfb_scrlist,
    255 };
    256 
    257 struct wsdisplay_accessops hpcfb_accessops = {
    258 	.ioctl		= hpcfb_ioctl,
    259 	.mmap		= hpcfb_mmap,
    260 	.alloc_screen	= hpcfb_alloc_screen,
    261 	.free_screen	= hpcfb_free_screen,
    262 	.show_screen	= hpcfb_show_screen,
    263 	.load_font	= NULL,
    264 	.pollc		= hpcfb_pollc,
    265 	.scroll		= NULL,
    266 };
    267 
    268 void    hpcfb_tv_putchar(struct hpcfb_devconfig *, int, int, u_int, long);
    269 void    hpcfb_tv_copycols(struct hpcfb_devconfig *, int, int, int, int);
    270 void    hpcfb_tv_erasecols(struct hpcfb_devconfig *, int, int, int, long);
    271 void    hpcfb_tv_copyrows(struct hpcfb_devconfig *, int, int, int);
    272 void    hpcfb_tv_eraserows(struct hpcfb_devconfig *, int, int, long);
    273 
    274 struct wsdisplay_emulops rasops_emul;
    275 
    276 static int hpcfbconsole;
    277 struct hpcfb_devconfig hpcfb_console_dc;
    278 struct wsscreen_descr hpcfb_console_wsscreen;
    279 struct hpcfb_tvrow hpcfb_console_tvram[HPCFB_MAX_ROW];
    280 
    281 /*
    282  *  function bodies
    283  */
    284 
    285 int
    286 hpcfbmatch(device_t parent, cfdata_t match, void *aux)
    287 {
    288 	return (1);
    289 }
    290 
    291 void
    292 hpcfbattach(device_t parent, device_t self, void *aux)
    293 {
    294 	struct hpcfb_softc *sc;
    295 	struct hpcfb_attach_args *ha = aux;
    296 	struct wsemuldisplaydev_attach_args wa;
    297 
    298 	sc = device_private(self);
    299 	sc->sc_dev = self;
    300 
    301 	sc->sc_accessops = ha->ha_accessops;
    302 	sc->sc_accessctx = ha->ha_accessctx;
    303 	sc->sc_nfbconf = ha->ha_nfbconf;
    304 	sc->sc_fbconflist = ha->ha_fbconflist;
    305 
    306 	if (hpcfbconsole) {
    307 		sc->sc_dc = &hpcfb_console_dc;
    308 		sc->sc_dc->dc_rinfo.ri_flg &= ~RI_NO_AUTO;
    309 		hpcfb_console_dc.dc_sc = sc;
    310 		printf(": %dx%d pixels, %d colors, %dx%d chars",
    311 		    sc->sc_dc->dc_rinfo.ri_width,sc->sc_dc->dc_rinfo.ri_height,
    312 		    (1 << sc->sc_dc->dc_rinfo.ri_depth),
    313 		    sc->sc_dc->dc_rinfo.ri_cols,sc->sc_dc->dc_rinfo.ri_rows);
    314 		/* Set video chip dependent CLUT if any. */
    315 		if (sc->sc_accessops->setclut)
    316 			sc->sc_accessops->setclut(sc->sc_accessctx,
    317 			    &hpcfb_console_dc.dc_rinfo);
    318 	}
    319 	printf("\n");
    320 
    321 	sc->sc_polling = 0; /* XXX */
    322 	sc->sc_mapping = 0; /* XXX */
    323 	callout_init(&sc->sc_switch_callout, 0);
    324 
    325 	wa.console = hpcfbconsole;
    326 	wa.scrdata = &hpcfb_screenlist;
    327 	wa.accessops = &hpcfb_accessops;
    328 	wa.accesscookie = sc;
    329 
    330 	sc->sc_wsdisplay = config_found(self, &wa, wsemuldisplaydevprint);
    331 
    332 #ifdef HPCFB_JUMP
    333 	/*
    334 	 * Create a kernel thread to scroll,
    335 	 */
    336 	if (kthread_create(PRI_NONE, 0, NULL, hpcfb_thread, sc,
    337 	    &sc->sc_thread, "%s", device_xname(sc->sc_dev)) != 0) {
    338 		/*
    339 		 * We were unable to create the HPCFB thread; bail out.
    340 		 */
    341 		sc->sc_thread = 0;
    342 		aprint_error_dev(sc->sc_dev, "unable to create thread, kernel "
    343 		    "hpcfb scroll support disabled\n");
    344 	}
    345 #endif /* HPCFB_JUMP */
    346 
    347 	/*
    348 	 * apmdev(4) uses dopowerhooks(9), apm(4) uses pmf(9), and the
    349 	 * two apm drivers are mutually exclusive.  Register power
    350 	 * hooks with both.
    351 	 */
    352 	sc->sc_powerhook = powerhook_establish(device_xname(sc->sc_dev),
    353 	    hpcfb_power, sc);
    354 	if (sc->sc_powerhook == NULL)
    355 		aprint_error_dev(self,
    356 				 "WARNING: unable to establish power hook\n");
    357 
    358 	if (!pmf_device_register(self, hpcfb_suspend, hpcfb_resume))
    359 		aprint_error_dev(self, "unable to establish power handler\n");
    360 }
    361 
    362 #ifdef HPCFB_JUMP
    363 void
    364 hpcfb_thread(void *arg)
    365 {
    366 	struct hpcfb_softc *sc = arg;
    367 
    368 	/*
    369 	 * Loop forever, doing a periodic check for update events.
    370 	 */
    371 	for (;;) {
    372 		/* HPCFB_LOCK(sc); */
    373 		sc->sc_dc->dc_state |= HPCFB_DC_SCRTHREAD;
    374 		if (!sc->sc_mapping) /* draw only EMUL mode */
    375 			hpcfb_update(sc->sc_dc);
    376 		sc->sc_dc->dc_state &= ~HPCFB_DC_SCRTHREAD;
    377 		/* APM_UNLOCK(sc); */
    378 		(void) tsleep(sc, PWAIT, "hpcfb",  (8 * hz) / 7 / 10);
    379 	}
    380 }
    381 #endif /* HPCFB_JUMP */
    382 
    383 /* Print function (for parent devices). */
    384 int
    385 hpcfbprint(void *aux, const char *pnp)
    386 {
    387 	if (pnp)
    388 		aprint_normal("hpcfb at %s", pnp);
    389 
    390 	return (UNCONF);
    391 }
    392 
    393 int
    394 hpcfb_cnattach(struct hpcfb_fbconf *fbconf)
    395 {
    396 #if NBIVIDEO > 0
    397 	struct hpcfb_fbconf __fbconf;
    398 #endif
    399 	long defattr;
    400 
    401 	DPRINTF(("%s(%d): hpcfb_cnattach()\n", __FILE__, __LINE__));
    402 #if NBIVIDEO > 0
    403 	if (fbconf == NULL) {
    404 		memset(&__fbconf, 0, sizeof(struct hpcfb_fbconf));
    405 		if (bivideo_getcnfb(&__fbconf) != 0)
    406 			return (ENXIO);
    407 		fbconf = &__fbconf;
    408 	}
    409 #endif /* NBIVIDEO > 0 */
    410 	memset(&hpcfb_console_dc, 0, sizeof(struct hpcfb_devconfig));
    411 	if (hpcfb_init(fbconf, &hpcfb_console_dc) != 0)
    412 		return (ENXIO);
    413 	hpcfb_console_dc.dc_state |= HPCFB_DC_CURRENT;
    414 
    415 	hpcfb_console_dc.dc_tvram = hpcfb_console_tvram;
    416 	/* clear screen */
    417 	memset(hpcfb_console_tvram, 0, sizeof(hpcfb_console_tvram));
    418 	hpcfb_redraw(&hpcfb_console_dc, 0, hpcfb_console_dc.dc_rows, 1);
    419 
    420 	hpcfb_console_wsscreen = hpcfb_stdscreen;
    421 	hpcfb_console_wsscreen.nrows = hpcfb_console_dc.dc_rows;
    422 	hpcfb_console_wsscreen.ncols = hpcfb_console_dc.dc_cols;
    423 	hpcfb_console_wsscreen.capabilities = hpcfb_console_dc.dc_rinfo.ri_caps;
    424 	hpcfb_allocattr(&hpcfb_console_dc,
    425 			WSCOL_WHITE, WSCOL_BLACK, 0, &defattr);
    426 	wsdisplay_cnattach(&hpcfb_console_wsscreen, &hpcfb_console_dc,
    427 	    0, 0, defattr);
    428 	hpcfbconsole = 1;
    429 
    430 	return (0);
    431 }
    432 
    433 int
    434 hpcfb_init(struct hpcfb_fbconf *fbconf,	struct hpcfb_devconfig *dc)
    435 {
    436 	struct rasops_info *ri;
    437 	vaddr_t fbaddr;
    438 
    439 	fbaddr = (vaddr_t)fbconf->hf_baseaddr;
    440 	dc->dc_fbaddr = (u_char *)fbaddr;
    441 
    442 	/* init rasops */
    443 	ri = &dc->dc_rinfo;
    444 	memset(ri, 0, sizeof(struct rasops_info));
    445 	ri->ri_depth = fbconf->hf_pixel_width;
    446 	ri->ri_bits = (void *)fbaddr;
    447 	ri->ri_width = fbconf->hf_width;
    448 	ri->ri_height = fbconf->hf_height;
    449 	ri->ri_stride = fbconf->hf_bytes_per_line;
    450 #if 0
    451 	ri->ri_flg = RI_FORCEMONO | RI_CURSOR;
    452 #else
    453 	ri->ri_flg = RI_CURSOR;
    454 #endif
    455 	if (dc == &hpcfb_console_dc)
    456 		ri->ri_flg |= RI_NO_AUTO;
    457 
    458 	switch (ri->ri_depth) {
    459 	case 8:
    460 		if (32 <= fbconf->hf_pack_width &&
    461 		    (fbconf->hf_order_flags & HPCFB_REVORDER_BYTE) &&
    462 		    (fbconf->hf_order_flags & HPCFB_REVORDER_WORD)) {
    463 			ri->ri_flg |= RI_BSWAP;
    464 		}
    465 		break;
    466 	default:
    467 		if (fbconf->hf_order_flags & HPCFB_REVORDER_BYTE) {
    468 #if BYTE_ORDER == BIG_ENDIAN
    469 			ri->ri_flg |= RI_BSWAP;
    470 #endif
    471 		} else {
    472 #if BYTE_ORDER == LITTLE_ENDIAN
    473 			ri->ri_flg |= RI_BSWAP;
    474 #endif
    475 		}
    476 		break;
    477 	}
    478 
    479 	if (fbconf->hf_class == HPCFB_CLASS_RGBCOLOR) {
    480 		ri->ri_rnum = fbconf->hf_u.hf_rgb.hf_red_width;
    481 		ri->ri_rpos = fbconf->hf_u.hf_rgb.hf_red_shift;
    482 		ri->ri_gnum = fbconf->hf_u.hf_rgb.hf_green_width;
    483 		ri->ri_gpos = fbconf->hf_u.hf_rgb.hf_green_shift;
    484 		ri->ri_bnum = fbconf->hf_u.hf_rgb.hf_blue_width;
    485 		ri->ri_bpos = fbconf->hf_u.hf_rgb.hf_blue_shift;
    486 	}
    487 
    488 	if (rasops_init(ri, HPCFB_MAX_ROW, HPCFB_MAX_COLUMN)) {
    489 		panic("%s(%d): rasops_init() failed!", __FILE__, __LINE__);
    490 	}
    491 
    492 	/* over write color map of rasops */
    493 	hpcfb_cmap_reorder (fbconf, dc);
    494 
    495 	dc->dc_curx = -1;
    496 	dc->dc_cury = -1;
    497 	dc->dc_rows = dc->dc_rinfo.ri_rows;
    498 	dc->dc_cols = dc->dc_rinfo.ri_cols;
    499 #ifdef HPCFB_JUMP
    500 	dc->dc_max_row = 0;
    501 	dc->dc_min_row = dc->dc_rows;
    502 	dc->dc_scroll = 0;
    503 	callout_init(&dc->dc_scroll_ch, 0);
    504 #endif /* HPCFB_JUMP */
    505 	dc->dc_memsize = ri->ri_stride * ri->ri_height;
    506 	/* hook rasops in hpcfb_ops */
    507 	rasops_emul = ri->ri_ops; /* struct copy */
    508 	ri->ri_ops = hpcfb_emulops; /* struct copy */
    509 
    510 	return (0);
    511 }
    512 
    513 static void
    514 hpcfb_cmap_reorder(struct hpcfb_fbconf *fbconf, struct hpcfb_devconfig *dc)
    515 {
    516 	struct rasops_info *ri = &dc->dc_rinfo;
    517 	int reverse = fbconf->hf_access_flags & HPCFB_ACCESS_REVERSE;
    518 	int *cmap = ri->ri_devcmap;
    519 	int i, j, bg, fg, tmp;
    520 
    521 	/*
    522 	 * Set forground and background so that the screen
    523 	 * looks black on white.
    524 	 * Normally, black = 00 and white = ff.
    525 	 * HPCFB_ACCESS_REVERSE means black = ff and white = 00.
    526 	 */
    527 	switch (fbconf->hf_pixel_width) {
    528 	case 1:
    529 		/* FALLTHROUGH */
    530 	case 2:
    531 		/* FALLTHROUGH */
    532 	case 4:
    533 		if (reverse) {
    534 			bg = 0;
    535 			fg = ~0;
    536 		} else {
    537 			bg = ~0;
    538 			fg = 0;
    539 		}
    540 		/* for gray-scale LCD, hi-contrast color map */
    541 		cmap[0] = bg;
    542 		for (i = 1; i < 16; i++)
    543 			cmap[i] = fg;
    544 		break;
    545 	case 8:
    546 		/* FALLTHROUGH */
    547 	case 16:
    548 		if (reverse) {
    549 			for (i = 0, j = 15; i < 8; i++, j--) {
    550 				tmp = cmap[i];
    551 				cmap[i] = cmap[j];
    552 				cmap[j] = tmp;
    553 			}
    554 		}
    555 		break;
    556 	}
    557 }
    558 
    559 int
    560 hpcfb_ioctl(void *v, void *vs, u_long cmd, void *data, int flag,
    561 	struct lwp *l)
    562 {
    563 	struct hpcfb_softc *sc = v;
    564 	struct hpcfb_devconfig *dc = sc->sc_dc;
    565 	struct wsdisplay_fbinfo *wdf;
    566 
    567 	DPRINTF(("hpcfb_ioctl(cmd=0x%lx)\n", cmd));
    568 	switch (cmd) {
    569 	case WSKBDIO_BELL:
    570 		return (0);
    571 		break;
    572 
    573 	case WSDISPLAYIO_GTYPE:
    574 		*(u_int *)data = WSDISPLAY_TYPE_HPCFB;
    575 		return (0);
    576 
    577 	case WSDISPLAYIO_GINFO:
    578 		wdf = (void *)data;
    579 		wdf->height = dc->dc_rinfo.ri_height;
    580 		wdf->width = dc->dc_rinfo.ri_width;
    581 		wdf->depth = dc->dc_rinfo.ri_depth;
    582 		wdf->cmsize = 256;	/* XXXX */
    583 		return (0);
    584 
    585 	case WSDISPLAYIO_SMODE:
    586 		if (*(int *)data == WSDISPLAYIO_MODE_EMUL){
    587 			if (sc->sc_mapping){
    588 				sc->sc_mapping = 0;
    589 				if (dc->dc_state&HPCFB_DC_DRAWING)
    590 					dc->dc_state &= ~HPCFB_DC_ABORT;
    591 #ifdef HPCFB_FORCE_REDRAW
    592 				hpcfb_refresh_screen(sc);
    593 #else
    594 				dc->dc_state |= HPCFB_DC_UPDATEALL;
    595 #endif
    596 			}
    597 		} else {
    598 			if (!sc->sc_mapping) {
    599 				sc->sc_mapping = 1;
    600 				dc->dc_state |= HPCFB_DC_ABORT;
    601 			}
    602 			sc->sc_mapping = 1;
    603 		}
    604 		if (sc && sc->sc_accessops->iodone)
    605 			(*sc->sc_accessops->iodone)(sc->sc_accessctx);
    606 		return (0);
    607 
    608 	case WSDISPLAYIO_GETCMAP:
    609 	case WSDISPLAYIO_PUTCMAP:
    610 	case WSDISPLAYIO_SVIDEO:
    611 	case WSDISPLAYIO_GVIDEO:
    612 	case WSDISPLAYIO_GETPARAM:
    613 	case WSDISPLAYIO_SETPARAM:
    614 	case HPCFBIO_GCONF:
    615 	case HPCFBIO_SCONF:
    616 	case HPCFBIO_GDSPCONF:
    617 	case HPCFBIO_SDSPCONF:
    618 	case HPCFBIO_GOP:
    619 	case HPCFBIO_SOP:
    620 		return ((*sc->sc_accessops->ioctl)(sc->sc_accessctx,
    621 		    cmd, data, flag, l));
    622 
    623 	default:
    624 		if (IOCGROUP(cmd) != 't')
    625 			DPRINTF(("%s(%d): hpcfb_ioctl(%lx, %lx) grp=%c num=%ld\n",
    626 			    __FILE__, __LINE__,
    627 			    cmd, (u_long)data, (char)IOCGROUP(cmd), cmd&0xff));
    628 		break;
    629 	}
    630 
    631 	return (EPASSTHROUGH); /* Inappropriate ioctl for device */
    632 }
    633 
    634 paddr_t
    635 hpcfb_mmap(void *v, void *vs, off_t offset, int prot)
    636 {
    637 	struct hpcfb_softc *sc = v;
    638 
    639 	return ((*sc->sc_accessops->mmap)(sc->sc_accessctx, offset, prot));
    640 }
    641 
    642 static void
    643 hpcfb_power(int why, void *arg)
    644 {
    645 	struct hpcfb_softc *sc = arg;
    646 
    647 	if (sc->sc_dc == NULL)
    648 		return;	/* You have no screen yet. */
    649 
    650 	switch (why) {
    651 	case PWR_STANDBY:
    652 		break;
    653 	case PWR_SOFTSUSPEND: {
    654 		struct wsdisplay_softc *wsc = device_private(sc->sc_wsdisplay);
    655 
    656 		sc->sc_screen_resumed = wsdisplay_getactivescreen(wsc);
    657 
    658 		if (wsdisplay_switch(sc->sc_wsdisplay,
    659 		    WSDISPLAY_NULLSCREEN, 1 /* waitok */) == 0) {
    660 			wsscreen_switchwait(wsc, WSDISPLAY_NULLSCREEN);
    661 		} else {
    662 			sc->sc_screen_resumed = WSDISPLAY_NULLSCREEN;
    663 		}
    664 
    665 		sc->sc_dc->dc_state &= ~HPCFB_DC_CURRENT;
    666 		break;
    667 	    }
    668 	case PWR_SOFTRESUME:
    669 		sc->sc_dc->dc_state |= HPCFB_DC_CURRENT;
    670 		if (sc->sc_screen_resumed != WSDISPLAY_NULLSCREEN)
    671 			wsdisplay_switch(sc->sc_wsdisplay,
    672 			    sc->sc_screen_resumed, 1 /* waitok */);
    673 		break;
    674 	}
    675 }
    676 
    677 static bool
    678 hpcfb_suspend(device_t self, const pmf_qual_t *qual)
    679 {
    680 	struct hpcfb_softc *sc = device_private(self);
    681 
    682 	hpcfb_power(PWR_SOFTSUSPEND, sc);
    683 	return true;
    684 }
    685 
    686 static bool
    687 hpcfb_resume(device_t self, const pmf_qual_t *qual)
    688 {
    689 	struct hpcfb_softc *sc = device_private(self);
    690 
    691 	hpcfb_power(PWR_SOFTRESUME, sc);
    692 	return true;
    693 }
    694 
    695 void
    696 hpcfb_refresh_screen(struct hpcfb_softc *sc)
    697 {
    698 	struct hpcfb_devconfig *dc = sc->sc_dc;
    699 	int x, y;
    700 
    701 	DPRINTF(("hpcfb_refres_screen()\n"));
    702 	if (dc == NULL)
    703 		return;
    704 
    705 #ifdef HPCFB_JUMP
    706 	if (dc->dc_state&HPCFB_DC_SCROLLPENDING) {
    707 		dc->dc_state &= ~HPCFB_DC_SCROLLPENDING;
    708 		dc->dc_state &= ~HPCFB_DC_UPDATE;
    709 		callout_stop(&dc->dc_scroll_ch);
    710 	}
    711 #endif /* HPCFB_JUMP */
    712 	/*
    713 	 * refresh screen
    714 	 */
    715 	dc->dc_state &= ~HPCFB_DC_UPDATEALL;
    716 	x = dc->dc_curx;
    717 	y = dc->dc_cury;
    718 	if (0 <= x && 0 <= y)
    719 		hpcfb_cursor_raw(dc, 0,  y, x); /* disable cursor */
    720 	/* redraw all text */
    721 	hpcfb_redraw(dc, 0, dc->dc_rows, 1);
    722 	if (0 <= x && 0 <= y)
    723 		hpcfb_cursor_raw(dc, 1,  y, x); /* enable cursor */
    724 }
    725 
    726 static int
    727 hpcfb_alloc_screen(void *v, const struct wsscreen_descr *type,
    728 		   void **cookiep, int *curxp, int *curyp, long *attrp)
    729 {
    730 	struct hpcfb_softc *sc = v;
    731 	struct hpcfb_devconfig *dc;
    732 
    733 	DPRINTF(("%s(%d): hpcfb_alloc_screen()\n", __FILE__, __LINE__));
    734 
    735 	dc = malloc(sizeof(struct hpcfb_devconfig), M_DEVBUF, M_WAITOK|M_ZERO);
    736 	if (dc == NULL)
    737 		return (ENOMEM);
    738 
    739 	dc->dc_sc = sc;
    740 	if (hpcfb_init(&sc->sc_fbconflist[0], dc) != 0)
    741 		return (EINVAL);
    742 	if (sc->sc_accessops->font) {
    743 		sc->sc_accessops->font(sc->sc_accessctx,
    744 		    dc->dc_rinfo.ri_font);
    745 	}
    746 	/* Set video chip dependent CLUT if any. */
    747 	if (sc->sc_accessops->setclut)
    748 		sc->sc_accessops->setclut(sc->sc_accessctx, &dc->dc_rinfo);
    749 	printf("hpcfb: %dx%d pixels, %d colors, %dx%d chars\n",
    750 	    dc->dc_rinfo.ri_width, dc->dc_rinfo.ri_height,
    751 	    (1 << dc->dc_rinfo.ri_depth),
    752 	    dc->dc_rinfo.ri_cols, dc->dc_rinfo.ri_rows);
    753 
    754 	/*
    755 	 * XXX, wsdisplay won't reffer the information in wsscreen_descr
    756 	 * structure until alloc_screen will be called, at least, under
    757 	 * current implementation...
    758 	 */
    759 	hpcfb_stdscreen.nrows = dc->dc_rows;
    760         hpcfb_stdscreen.ncols = dc->dc_cols;
    761 	hpcfb_stdscreen.capabilities = dc->dc_rinfo.ri_caps;
    762 
    763 	dc->dc_fbaddr = dc->dc_rinfo.ri_bits;
    764 	dc->dc_rows = dc->dc_rinfo.ri_rows;
    765 	dc->dc_cols = dc->dc_rinfo.ri_cols;
    766 	dc->dc_memsize = dc->dc_rinfo.ri_stride * dc->dc_rinfo.ri_height;
    767 
    768 	dc->dc_curx = -1;
    769 	dc->dc_cury = -1;
    770 	dc->dc_tvram = malloc(sizeof(struct hpcfb_tvrow)*dc->dc_rows,
    771 	    M_DEVBUF, M_WAITOK|M_ZERO);
    772 	if (dc->dc_tvram == NULL){
    773 		free(dc, M_DEVBUF);
    774 		return (ENOMEM);
    775 	}
    776 
    777 	*curxp = 0;
    778 	*curyp = 0;
    779 	*cookiep = dc;
    780 	hpcfb_allocattr(*cookiep, WSCOL_WHITE, WSCOL_BLACK, 0, attrp);
    781 	DPRINTF(("%s(%d): hpcfb_alloc_screen(): %p\n",
    782 	    __FILE__, __LINE__, dc));
    783 
    784 	return (0);
    785 }
    786 
    787 static void
    788 hpcfb_free_screen(void *v, void *cookie)
    789 {
    790 	struct hpcfb_devconfig *dc = cookie;
    791 
    792 	DPRINTF(("%s(%d): hpcfb_free_screen(%p)\n",
    793 	    __FILE__, __LINE__, cookie));
    794 #ifdef DIAGNOSTIC
    795 	if (dc == &hpcfb_console_dc)
    796 		panic("hpcfb_free_screen: console");
    797 #endif
    798 	free(dc->dc_tvram, M_DEVBUF);
    799 	free(dc, M_DEVBUF);
    800 }
    801 
    802 static int
    803 hpcfb_show_screen(void *v, void *cookie, int waitok,
    804     void (*cb)(void *, int, int), void *cbarg)
    805 {
    806 	struct hpcfb_softc *sc = v;
    807 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
    808 	struct hpcfb_devconfig *odc;
    809 
    810 	DPRINTF(("%s(%d): hpcfb_show_screen(%p)\n",
    811 	    __FILE__, __LINE__, dc));
    812 
    813 	odc = sc->sc_dc;
    814 
    815 	if (dc == NULL || odc == dc) {
    816 		hpcfb_refresh_screen(sc);
    817 		return (0);
    818 	}
    819 
    820 	if (odc != NULL) {
    821 		odc->dc_state |= HPCFB_DC_SWITCHREQ;
    822 
    823 		if ((odc->dc_state&HPCFB_DC_DRAWING) != 0) {
    824 			odc->dc_state |= HPCFB_DC_ABORT;
    825 		}
    826 	}
    827 
    828 	sc->sc_wantedscreen = cookie;
    829 	sc->sc_switchcb = cb;
    830 	sc->sc_switchcbarg = cbarg;
    831 	if (cb) {
    832 		callout_reset(&sc->sc_switch_callout, 0,
    833 		    (void(*)(void *))hpcfb_doswitch, sc);
    834 		return (EAGAIN);
    835 	}
    836 
    837 	hpcfb_doswitch(sc);
    838 	return (0);
    839 }
    840 
    841 void
    842 hpcfb_doswitch(struct hpcfb_softc *sc)
    843 {
    844 	struct hpcfb_devconfig *dc;
    845 	struct hpcfb_devconfig *odc;
    846 
    847 	DPRINTF(("hpcfb_doswitch()\n"));
    848 	odc = sc->sc_dc;
    849 	dc = sc->sc_wantedscreen;
    850 
    851 	if (!dc) {
    852 		(*sc->sc_switchcb)(sc->sc_switchcbarg, EIO, 0);
    853 		odc->dc_state &= ~HPCFB_DC_SWITCHREQ;
    854 		return;
    855 	}
    856 
    857 	if (odc == dc) {
    858 		odc->dc_state &= ~HPCFB_DC_SWITCHREQ;
    859 		return;
    860 	}
    861 
    862 	if (odc) {
    863 #ifdef HPCFB_JUMP
    864 		odc->dc_state |= HPCFB_DC_ABORT;
    865 #endif /* HPCFB_JUMP */
    866 
    867 		if (odc->dc_curx >= 0 && odc->dc_cury >= 0)
    868 			hpcfb_cursor_raw(odc, 0,  odc->dc_cury, odc->dc_curx);
    869 		/* disable cursor */
    870 		/* disable old screen */
    871 		odc->dc_state &= ~HPCFB_DC_CURRENT;
    872 		/* XXX, This is too dangerous.
    873 		odc->dc_rinfo.ri_bits = NULL;
    874 		*/
    875 	}
    876 	/* switch screen to new one */
    877 	dc->dc_state |= HPCFB_DC_CURRENT;
    878 	dc->dc_state &= ~HPCFB_DC_ABORT;
    879 	dc->dc_rinfo.ri_bits = dc->dc_fbaddr;
    880 	sc->sc_dc = dc;
    881 
    882 	/* redraw screen image */
    883 	hpcfb_refresh_screen(sc);
    884 
    885 	sc->sc_wantedscreen = NULL;
    886 	if (sc->sc_switchcb)
    887 		(*sc->sc_switchcb)(sc->sc_switchcbarg, 0, 0);
    888 
    889 	if (odc != NULL)
    890 		odc->dc_state &= ~HPCFB_DC_SWITCHREQ;
    891 	dc->dc_state &= ~HPCFB_DC_SWITCHREQ;
    892 	return;
    893 }
    894 
    895 static void
    896 hpcfb_pollc(void *v, int on)
    897 {
    898 	struct hpcfb_softc *sc = v;
    899 
    900 	if (sc == NULL)
    901 		return;
    902 	sc->sc_polling = on;
    903 	if (sc->sc_accessops->iodone)
    904 		(*sc->sc_accessops->iodone)(sc->sc_accessctx);
    905 	if (on) {
    906 		hpcfb_refresh_screen(sc);
    907 		if (sc->sc_accessops->iodone)
    908 			(*sc->sc_accessops->iodone)(sc->sc_accessctx);
    909 	}
    910 
    911 	return;
    912 }
    913 
    914 /*
    915  * cursor
    916  */
    917 void
    918 hpcfb_cursor(void *cookie, int on, int row, int col)
    919 {
    920 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
    921 
    922 	if (on) {
    923 		dc->dc_curx = col;
    924 		dc->dc_cury = row;
    925 	} else {
    926 		dc->dc_curx = -1;
    927 		dc->dc_cury = -1;
    928 	}
    929 
    930 	hpcfb_cursor_raw(cookie, on, row, col);
    931 }
    932 
    933 void
    934 hpcfb_cursor_raw(void *cookie, int on, int row, int col)
    935 {
    936 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
    937 	struct hpcfb_softc *sc = dc->dc_sc;
    938 	struct rasops_info *ri = &dc->dc_rinfo;
    939 	int curwidth, curheight;
    940 	int xoff, yoff;
    941 
    942 #ifdef HPCFB_JUMP
    943 	if (dc->dc_state&HPCFB_DC_SCROLLPENDING) {
    944 		dc->dc_state |= HPCFB_DC_UPDATE;
    945 		return;
    946 	}
    947 #endif /* HPCFB_JUMP */
    948 	if (!IS_DRAWABLE(dc)) {
    949 		return;
    950 	}
    951 
    952 	if (ri->ri_bits == NULL)
    953 		return;
    954 
    955 	dc->dc_state |= HPCFB_DC_DRAWING;
    956 	if (sc && sc->sc_accessops->cursor) {
    957 		xoff = col * ri->ri_font->fontwidth;
    958 		yoff = row * ri->ri_font->fontheight;
    959 		curheight = ri->ri_font->fontheight;
    960 		curwidth = ri->ri_font->fontwidth;
    961 		(*sc->sc_accessops->cursor)(sc->sc_accessctx,
    962 		    on, xoff, yoff, curwidth, curheight);
    963 	} else
    964 		rasops_emul.cursor(ri, on, row, col);
    965 	dc->dc_state &= ~HPCFB_DC_DRAWING;
    966 }
    967 
    968 /*
    969  * mapchar
    970  */
    971 int
    972 hpcfb_mapchar(void *cookie, int c, unsigned int *cp)
    973 {
    974 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
    975 	struct rasops_info *ri = &dc->dc_rinfo;
    976 
    977 	return (rasops_emul.mapchar(ri, c, cp));
    978 }
    979 
    980 /*
    981  * putchar
    982  */
    983 void
    984 hpcfb_tv_putchar(struct hpcfb_devconfig *dc, int row, int col, u_int uc,
    985     long attr)
    986 {
    987 	struct hpcfb_tvrow *vscn = dc->dc_tvram;
    988 	struct hpcfb_vchar *vc = &vscn[row].col[col];
    989 	struct hpcfb_vchar *vcb;
    990 
    991 	if (vscn == 0)
    992 		return;
    993 
    994 	dc->dc_state |= HPCFB_DC_TDRAWING;
    995 #ifdef HPCFB_JUMP
    996 	if (row < dc->dc_min_row)
    997 		dc->dc_min_row = row;
    998 	if (row > dc->dc_max_row)
    999 		dc->dc_max_row = row;
   1000 
   1001 #endif /* HPCFB_JUMP */
   1002 	if (vscn[row].maxcol +1 == col)
   1003 		vscn[row].maxcol = col;
   1004 	else if (vscn[row].maxcol < col) {
   1005 		vcb =  &vscn[row].col[vscn[row].maxcol+1];
   1006 		memset(vcb, 0,
   1007 		    sizeof(struct hpcfb_vchar)*(col-vscn[row].maxcol-1));
   1008 		vscn[row].maxcol = col;
   1009 	}
   1010 	vc->c = uc;
   1011 	vc->attr = attr;
   1012 	dc->dc_state &= ~HPCFB_DC_TDRAWING;
   1013 #ifdef HPCFB_JUMP
   1014 	hpcfb_check_update(dc);
   1015 #endif /* HPCFB_JUMP */
   1016 }
   1017 
   1018 void
   1019 hpcfb_putchar(void *cookie, int row, int col, u_int uc, long attr)
   1020 {
   1021 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
   1022 	struct hpcfb_softc *sc = dc->dc_sc;
   1023 	struct rasops_info *ri = &dc->dc_rinfo;
   1024 	int xoff;
   1025 	int yoff;
   1026 	int fclr, uclr;
   1027 	struct wsdisplay_font *font;
   1028 
   1029 	hpcfb_tv_putchar(dc, row, col, uc, attr);
   1030 #ifdef HPCFB_JUMP
   1031 	if (dc->dc_state&HPCFB_DC_SCROLLPENDING) {
   1032 		dc->dc_state |= HPCFB_DC_UPDATE;
   1033 		return;
   1034 	}
   1035 #endif /* HPCFB_JUMP */
   1036 
   1037 	if (!IS_DRAWABLE(dc)) {
   1038 		return;
   1039 	}
   1040 
   1041 	if (ri->ri_bits == NULL)
   1042 		return;
   1043 
   1044 	dc->dc_state |= HPCFB_DC_DRAWING;
   1045 	if (sc && sc->sc_accessops->putchar
   1046 	    && (dc->dc_state&HPCFB_DC_CURRENT)) {
   1047 		font = ri->ri_font;
   1048 		yoff = row * ri->ri_font->fontheight;
   1049 		xoff =  col * ri->ri_font->fontwidth;
   1050 		fclr = ri->ri_devcmap[((u_int)attr >> 24) & 15];
   1051 		uclr = ri->ri_devcmap[((u_int)attr >> 16) & 15];
   1052 
   1053 		(*sc->sc_accessops->putchar)(sc->sc_accessctx,
   1054 		    xoff, yoff, font, fclr, uclr, uc, attr);
   1055 	} else
   1056 		rasops_emul.putchar(ri, row, col, uc, attr);
   1057 	dc->dc_state &= ~HPCFB_DC_DRAWING;
   1058 #ifdef HPCFB_JUMP
   1059 	hpcfb_check_update(dc);
   1060 #endif /* HPCFB_JUMP */
   1061 }
   1062 
   1063 /*
   1064  * copycols
   1065  */
   1066 void
   1067 hpcfb_tv_copycols(struct hpcfb_devconfig *dc, int row, int srccol, int dstcol,
   1068     int ncols)
   1069 {
   1070 	struct hpcfb_tvrow *vscn = dc->dc_tvram;
   1071 	struct hpcfb_vchar *svc = &vscn[row].col[srccol];
   1072 	struct hpcfb_vchar *dvc = &vscn[row].col[dstcol];
   1073 
   1074 	if (vscn == 0)
   1075 		return;
   1076 
   1077 	dc->dc_state |= HPCFB_DC_TDRAWING;
   1078 #ifdef HPCFB_JUMP
   1079 	if (row < dc->dc_min_row)
   1080 		dc->dc_min_row = row;
   1081 	if (row > dc->dc_max_row)
   1082 		dc->dc_max_row = row;
   1083 #endif /* HPCFB_JUMP */
   1084 
   1085 	memcpy(dvc, svc, ncols*sizeof(struct hpcfb_vchar));
   1086 	if (vscn[row].maxcol < srccol+ncols-1)
   1087 		vscn[row].maxcol = srccol+ncols-1;
   1088 	if (vscn[row].maxcol < dstcol+ncols-1)
   1089 		vscn[row].maxcol = dstcol+ncols-1;
   1090 	dc->dc_state &= ~HPCFB_DC_TDRAWING;
   1091 #ifdef HPCFB_JUMP
   1092 	hpcfb_check_update(dc);
   1093 #endif /* HPCFB_JUMP */
   1094 }
   1095 
   1096 void
   1097 hpcfb_copycols(void *cookie, int row, int srccol, int dstcol, int ncols)
   1098 {
   1099 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
   1100 	struct hpcfb_softc *sc = dc->dc_sc;
   1101 	struct rasops_info *ri = &dc->dc_rinfo;
   1102 	int srcxoff,dstxoff;
   1103 	int srcyoff,dstyoff;
   1104 	int height, width;
   1105 
   1106 	hpcfb_tv_copycols(dc, row, srccol, dstcol, ncols);
   1107 #ifdef HPCFB_JUMP
   1108 	if (dc->dc_state&HPCFB_DC_SCROLLPENDING) {
   1109 		dc->dc_state |= HPCFB_DC_UPDATE;
   1110 		return;
   1111 	}
   1112 #endif /* HPCFB_JUMP */
   1113 	if (!IS_DRAWABLE(dc)) {
   1114 		return;
   1115 	}
   1116 
   1117 	if (ri->ri_bits == NULL)
   1118 		return;
   1119 
   1120 	dc->dc_state |= HPCFB_DC_DRAWING;
   1121 	if (sc && sc->sc_accessops->bitblit
   1122 	    && (dc->dc_state&HPCFB_DC_CURRENT)) {
   1123 		srcxoff = srccol * ri->ri_font->fontwidth;
   1124 		srcyoff = row * ri->ri_font->fontheight;
   1125 		dstxoff = dstcol * ri->ri_font->fontwidth;
   1126 		dstyoff = row * ri->ri_font->fontheight;
   1127 		width = ncols * ri->ri_font->fontwidth;
   1128 		height = ri->ri_font->fontheight;
   1129 		(*sc->sc_accessops->bitblit)(sc->sc_accessctx,
   1130 		    srcxoff, srcyoff, dstxoff, dstyoff, height, width);
   1131 	} else
   1132 		rasops_emul.copycols(ri, row, srccol, dstcol, ncols);
   1133 	dc->dc_state &= ~HPCFB_DC_DRAWING;
   1134 #ifdef HPCFB_JUMP
   1135 	hpcfb_check_update(dc);
   1136 #endif /* HPCFB_JUMP */
   1137 }
   1138 
   1139 
   1140 /*
   1141  * erasecols
   1142  */
   1143 void
   1144 hpcfb_tv_erasecols(struct hpcfb_devconfig *dc,
   1145 		   int row, int startcol, int ncols, long attr)
   1146 {
   1147 	struct hpcfb_tvrow *vscn = dc->dc_tvram;
   1148 
   1149 	if (vscn == 0)
   1150 		return;
   1151 
   1152 	dc->dc_state |= HPCFB_DC_TDRAWING;
   1153 #ifdef HPCFB_JUMP
   1154 	if (row < dc->dc_min_row)
   1155 		dc->dc_min_row = row;
   1156 	if (row > dc->dc_max_row)
   1157 		dc->dc_max_row = row;
   1158 #endif /* HPCFB_JUMP */
   1159 
   1160 	vscn[row].maxcol = startcol-1;
   1161 	if (vscn[row].spacecol < startcol+ncols-1)
   1162 		vscn[row].spacecol = startcol+ncols-1;
   1163 	dc->dc_state &= ~HPCFB_DC_TDRAWING;
   1164 #ifdef HPCFB_JUMP
   1165 	hpcfb_check_update(dc);
   1166 #endif /* HPCFB_JUMP */
   1167 }
   1168 
   1169 void
   1170 hpcfb_erasecols(void *cookie, int row, int startcol, int ncols, long attr)
   1171 {
   1172 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
   1173 	struct hpcfb_softc *sc = dc->dc_sc;
   1174 	struct rasops_info *ri = &dc->dc_rinfo;
   1175 	int xoff, yoff;
   1176 	int width, height;
   1177 
   1178 	hpcfb_tv_erasecols(dc, row, startcol, ncols, attr);
   1179 #ifdef HPCFB_JUMP
   1180 	if (dc->dc_state&HPCFB_DC_SCROLLPENDING) {
   1181 		dc->dc_state |= HPCFB_DC_UPDATE;
   1182 		return;
   1183 	}
   1184 #endif /* HPCFB_JUMP */
   1185 	if (!IS_DRAWABLE(dc)) {
   1186 		return;
   1187 	}
   1188 
   1189 	if (ri->ri_bits == NULL)
   1190 		return;
   1191 
   1192 	dc->dc_state |= HPCFB_DC_DRAWING;
   1193 	if (sc && sc->sc_accessops->erase
   1194 	    && (dc->dc_state&HPCFB_DC_CURRENT)) {
   1195 		xoff = startcol * ri->ri_font->fontwidth;
   1196 		yoff = row * ri->ri_font->fontheight;
   1197 		width = ncols * ri->ri_font->fontwidth;
   1198 		height = ri->ri_font->fontheight;
   1199 		(*sc->sc_accessops->erase)(sc->sc_accessctx,
   1200 		    xoff, yoff, height, width, attr);
   1201 	} else
   1202 		rasops_emul.erasecols(ri, row, startcol, ncols, attr);
   1203 	dc->dc_state &= ~HPCFB_DC_DRAWING;
   1204 #ifdef HPCFB_JUMP
   1205 	hpcfb_check_update(dc);
   1206 #endif /* HPCFB_JUMP */
   1207 }
   1208 
   1209 /*
   1210  * Copy rows.
   1211  */
   1212 void
   1213 hpcfb_tv_copyrows(struct hpcfb_devconfig *dc, int src, int dst, int num)
   1214 {
   1215 	struct hpcfb_tvrow *vscn = dc->dc_tvram;
   1216 	struct hpcfb_tvrow *svc = &vscn[src];
   1217 	struct hpcfb_tvrow *dvc = &vscn[dst];
   1218 	int i;
   1219 	int d;
   1220 
   1221 	if (vscn == 0)
   1222 		return;
   1223 
   1224 	dc->dc_state |= HPCFB_DC_TDRAWING;
   1225 #ifdef HPCFB_JUMP
   1226 	if (dst < dc->dc_min_row)
   1227 		dc->dc_min_row = dst;
   1228 	if (dst + num > dc->dc_max_row)
   1229 		dc->dc_max_row = dst + num -1;
   1230 #endif /* HPCFB_JUMP */
   1231 
   1232 	if (svc > dvc)
   1233 		d = 1;
   1234 	else if (svc < dvc) {
   1235 		svc += num-1;
   1236 		dvc += num-1;
   1237 		d = -1;
   1238 	} else  {
   1239 		dc->dc_state &= ~HPCFB_DC_TDRAWING;
   1240 #ifdef HPCFB_JUMP
   1241 		hpcfb_check_update(dc);
   1242 #endif /* HPCFB_JUMP */
   1243 		return;
   1244 	}
   1245 
   1246 	for (i = 0; i < num; i++) {
   1247 		memcpy(&dvc->col[0], &svc->col[0], sizeof(struct hpcfb_vchar)*(svc->maxcol+1));
   1248 		if (svc->maxcol < dvc->maxcol && dvc->spacecol < dvc->maxcol)
   1249 			dvc->spacecol = dvc->maxcol;
   1250 		dvc->maxcol = svc->maxcol;
   1251 		svc+=d;
   1252 		dvc+=d;
   1253 	}
   1254 	dc->dc_state &= ~HPCFB_DC_TDRAWING;
   1255 #ifdef HPCFB_JUMP
   1256 	hpcfb_check_update(dc);
   1257 #endif /* HPCFB_JUMP */
   1258 }
   1259 
   1260 void
   1261 hpcfb_redraw(void *cookie, int row, int num, int all)
   1262 {
   1263 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
   1264 	struct rasops_info *ri = &dc->dc_rinfo;
   1265 	int cols;
   1266 	struct hpcfb_tvrow *vscn = dc->dc_tvram;
   1267 	struct hpcfb_vchar *svc;
   1268 	int i, j;
   1269 
   1270 #ifdef HPCFB_JUMP
   1271 	if (dc->dc_state&HPCFB_DC_SCROLLPENDING) {
   1272 		dc->dc_state |= HPCFB_DC_UPDATE;
   1273 		return;
   1274 	}
   1275 #endif /* HPCFB_JUMP */
   1276 	if (dc->dc_sc != NULL
   1277 	    && !dc->dc_sc->sc_polling
   1278 	    && dc->dc_sc->sc_mapping)
   1279 		return;
   1280 
   1281 	dc->dc_state &= ~HPCFB_DC_ABORT;
   1282 
   1283 	if (vscn == 0)
   1284 		return;
   1285 
   1286 	if (!IS_DRAWABLE(dc)) {
   1287 		return;
   1288 	}
   1289 
   1290 	if (ri->ri_bits == NULL)
   1291 		return;
   1292 
   1293 	dc->dc_state |= HPCFB_DC_DRAWING;
   1294 	dc->dc_state |= HPCFB_DC_TDRAWING;
   1295 	for (i = 0; i < num; i++) {
   1296 		if (dc->dc_state&HPCFB_DC_ABORT)
   1297 			break;
   1298 		if ((dc->dc_state&HPCFB_DC_CURRENT) == 0)
   1299 			break;
   1300 		cols = vscn[row+i].maxcol;
   1301 		for (j = 0; j <= cols; j++) {
   1302 			if (dc->dc_state&HPCFB_DC_ABORT)
   1303 				continue;
   1304 			if ((dc->dc_state&HPCFB_DC_CURRENT) == 0)
   1305 				continue;
   1306 			svc = &vscn[row+i].col[j];
   1307 			rasops_emul.putchar(ri, row + i, j, svc->c, svc->attr);
   1308 		}
   1309 		if (all)
   1310 			cols = dc->dc_cols-1;
   1311 		else
   1312 			cols = vscn[row+i].spacecol;
   1313 		for (; j <= cols; j++) {
   1314 			if (dc->dc_state&HPCFB_DC_ABORT)
   1315 				continue;
   1316 			if ((dc->dc_state&HPCFB_DC_CURRENT) == 0)
   1317 				continue;
   1318 			rasops_emul.putchar(ri, row + i, j, ' ', 0);
   1319 		}
   1320 		vscn[row+i].spacecol = 0;
   1321 	}
   1322 	if (dc->dc_state&HPCFB_DC_ABORT)
   1323 		dc->dc_state &= ~HPCFB_DC_ABORT;
   1324 	dc->dc_state &= ~HPCFB_DC_DRAWING;
   1325 	dc->dc_state &= ~HPCFB_DC_TDRAWING;
   1326 #ifdef HPCFB_JUMP
   1327 	hpcfb_check_update(dc);
   1328 #endif /* HPCFB_JUMP */
   1329 }
   1330 
   1331 #ifdef HPCFB_JUMP
   1332 void
   1333 hpcfb_update(void *v)
   1334 {
   1335 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)v;
   1336 
   1337 	/* callout_stop(&dc->dc_scroll_ch); */
   1338 	dc->dc_state &= ~HPCFB_DC_SCROLLPENDING;
   1339 	if (dc->dc_curx > 0 && dc->dc_cury > 0)
   1340 		hpcfb_cursor_raw(dc, 0,  dc->dc_cury, dc->dc_curx);
   1341 	if ((dc->dc_state&HPCFB_DC_UPDATEALL)) {
   1342 		hpcfb_redraw(dc, 0, dc->dc_rows, 1);
   1343 		dc->dc_state &= ~(HPCFB_DC_UPDATE|HPCFB_DC_UPDATEALL);
   1344 	} else if ((dc->dc_state&HPCFB_DC_UPDATE)) {
   1345 		hpcfb_redraw(dc, dc->dc_min_row,
   1346 		    dc->dc_max_row - dc->dc_min_row, 0);
   1347 		dc->dc_state &= ~HPCFB_DC_UPDATE;
   1348 	} else {
   1349 		hpcfb_redraw(dc, dc->dc_scroll_dst, dc->dc_scroll_num, 0);
   1350 	}
   1351 	if (dc->dc_curx > 0 && dc->dc_cury > 0)
   1352 		hpcfb_cursor_raw(dc, 1,  dc->dc_cury, dc->dc_curx);
   1353 }
   1354 
   1355 void
   1356 hpcfb_do_scroll(void *v)
   1357 {
   1358 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)v;
   1359 
   1360 	dc->dc_state |= HPCFB_DC_SCRTHREAD;
   1361 	if (dc->dc_state&(HPCFB_DC_DRAWING|HPCFB_DC_TDRAWING))
   1362 		dc->dc_state |= HPCFB_DC_SCRDELAY;
   1363 	else if (dc->dc_sc != NULL && dc->dc_sc->sc_thread)
   1364 		wakeup(dc->dc_sc);
   1365 	else if (dc->dc_sc != NULL && !dc->dc_sc->sc_mapping) {
   1366 		/* draw only EMUL mode */
   1367 		hpcfb_update(v);
   1368 	}
   1369 	dc->dc_state &= ~HPCFB_DC_SCRTHREAD;
   1370 }
   1371 
   1372 void
   1373 hpcfb_check_update(void *v)
   1374 {
   1375 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)v;
   1376 
   1377 	if (dc->dc_sc != NULL
   1378 	    && dc->dc_sc->sc_polling
   1379 	    && (dc->dc_state&HPCFB_DC_SCROLLPENDING)){
   1380 		callout_stop(&dc->dc_scroll_ch);
   1381 		dc->dc_state &= ~HPCFB_DC_SCRDELAY;
   1382 		hpcfb_update(v);
   1383 	}
   1384 	else if (dc->dc_state&HPCFB_DC_SCRDELAY){
   1385 		dc->dc_state &= ~HPCFB_DC_SCRDELAY;
   1386 		hpcfb_update(v);
   1387 	} else if (dc->dc_state&HPCFB_DC_UPDATEALL){
   1388 		dc->dc_state &= ~HPCFB_DC_UPDATEALL;
   1389 		hpcfb_update(v);
   1390 	}
   1391 }
   1392 #endif /* HPCFB_JUMP */
   1393 
   1394 void
   1395 hpcfb_copyrows(void *cookie, int src, int dst, int num)
   1396 {
   1397 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
   1398 	struct rasops_info *ri = &dc->dc_rinfo;
   1399 	struct hpcfb_softc *sc = dc->dc_sc;
   1400 	int srcyoff, dstyoff;
   1401 	int width, height;
   1402 
   1403 	hpcfb_tv_copyrows(cookie, src, dst, num);
   1404 
   1405 	if (!IS_DRAWABLE(dc)) {
   1406 		return;
   1407 	}
   1408 
   1409 	if (ri->ri_bits == NULL)
   1410 		return;
   1411 
   1412 	if (sc && sc->sc_accessops->bitblit
   1413 	    && (dc->dc_state&HPCFB_DC_CURRENT)) {
   1414 		dc->dc_state |= HPCFB_DC_DRAWING;
   1415 		srcyoff = src * ri->ri_font->fontheight;
   1416 		dstyoff = dst * ri->ri_font->fontheight;
   1417 		width = dc->dc_cols * ri->ri_font->fontwidth;
   1418 		height = num * ri->ri_font->fontheight;
   1419 		(*sc->sc_accessops->bitblit)(sc->sc_accessctx,
   1420 		    0, srcyoff, 0, dstyoff, height, width);
   1421 		dc->dc_state &= ~HPCFB_DC_DRAWING;
   1422 	}
   1423 	else {
   1424 #ifdef HPCFB_JUMP
   1425 		if (sc && sc->sc_polling) {
   1426 			hpcfb_check_update(dc);
   1427 		} else if ((dc->dc_state&HPCFB_DC_SCROLLPENDING) == 0) {
   1428 			dc->dc_state |= HPCFB_DC_SCROLLPENDING;
   1429 			dc->dc_scroll = 1;
   1430 			dc->dc_scroll_src = src;
   1431 			dc->dc_scroll_dst = dst;
   1432 			dc->dc_scroll_num = num;
   1433 			callout_reset(&dc->dc_scroll_ch, hz/100, &hpcfb_do_scroll, dc);
   1434 			return;
   1435 		} else if (dc->dc_scroll++ < dc->dc_rows/HPCFB_MAX_JUMP) {
   1436 			dc->dc_state |= HPCFB_DC_UPDATE;
   1437 			return;
   1438 		} else {
   1439 			dc->dc_state &= ~HPCFB_DC_SCROLLPENDING;
   1440 			callout_stop(&dc->dc_scroll_ch);
   1441 		}
   1442 		if (dc->dc_state&HPCFB_DC_UPDATE) {
   1443 			dc->dc_state &= ~HPCFB_DC_UPDATE;
   1444 			hpcfb_redraw(cookie, dc->dc_min_row,
   1445 			    dc->dc_max_row - dc->dc_min_row, 0);
   1446 			dc->dc_max_row = 0;
   1447 			dc->dc_min_row = dc->dc_rows;
   1448 			if (dc->dc_curx > 0 && dc->dc_cury > 0)
   1449 				hpcfb_cursor(dc, 1,  dc->dc_cury, dc->dc_curx);
   1450 			return;
   1451 		}
   1452 #endif /* HPCFB_JUMP */
   1453 		hpcfb_redraw(cookie, dst, num, 0);
   1454 	}
   1455 #ifdef HPCFB_JUMP
   1456 	hpcfb_check_update(dc);
   1457 #endif /* HPCFB_JUMP */
   1458 }
   1459 
   1460 /*
   1461  * eraserows
   1462  */
   1463 void
   1464 hpcfb_tv_eraserows(struct hpcfb_devconfig *dc,
   1465 		   int row, int nrow, long attr)
   1466 {
   1467 	struct hpcfb_tvrow *vscn = dc->dc_tvram;
   1468 	int cols;
   1469 	int i;
   1470 
   1471 	if (vscn == 0)
   1472 		return;
   1473 
   1474 	dc->dc_state |= HPCFB_DC_TDRAWING;
   1475 	dc->dc_state &= ~HPCFB_DC_TDRAWING;
   1476 #ifdef HPCFB_JUMP
   1477 	if (row < dc->dc_min_row)
   1478 		dc->dc_min_row = row;
   1479 	if (row + nrow > dc->dc_max_row)
   1480 		dc->dc_max_row = row + nrow;
   1481 #endif /* HPCFB_JUMP */
   1482 
   1483 	for (i = 0; i < nrow; i++) {
   1484 		cols = vscn[row+i].maxcol;
   1485 		if (vscn[row+i].spacecol < cols)
   1486 			vscn[row+i].spacecol = cols;
   1487 		vscn[row+i].maxcol = -1;
   1488 	}
   1489 #ifdef HPCFB_JUMP
   1490 	hpcfb_check_update(dc);
   1491 #endif /* HPCFB_JUMP */
   1492 }
   1493 
   1494 void
   1495 hpcfb_eraserows(void *cookie, int row, int nrow, long attr)
   1496 {
   1497 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
   1498 	struct hpcfb_softc *sc = dc->dc_sc;
   1499 	struct rasops_info *ri = &dc->dc_rinfo;
   1500 	int yoff;
   1501 	int width;
   1502 	int height;
   1503 
   1504 	hpcfb_tv_eraserows(dc, row, nrow, attr);
   1505 #ifdef HPCFB_JUMP
   1506 	if (dc->dc_state&HPCFB_DC_SCROLLPENDING) {
   1507 		dc->dc_state |= HPCFB_DC_UPDATE;
   1508 		return;
   1509 	}
   1510 #endif /* HPCFB_JUMP */
   1511 	if (!IS_DRAWABLE(dc)) {
   1512 		return;
   1513 	}
   1514 
   1515 	if (ri->ri_bits == NULL)
   1516 		return;
   1517 
   1518 	dc->dc_state |= HPCFB_DC_DRAWING;
   1519 	if (sc && sc->sc_accessops->erase
   1520 	    && (dc->dc_state&HPCFB_DC_CURRENT)) {
   1521 		yoff = row * ri->ri_font->fontheight;
   1522 		width = dc->dc_cols * ri->ri_font->fontwidth;
   1523 		height = nrow * ri->ri_font->fontheight;
   1524 		(*sc->sc_accessops->erase)(sc->sc_accessctx,
   1525 		    0, yoff, height, width, attr);
   1526 	} else
   1527 		rasops_emul.eraserows(ri, row, nrow, attr);
   1528 	dc->dc_state &= ~HPCFB_DC_DRAWING;
   1529 #ifdef HPCFB_JUMP
   1530 	hpcfb_check_update(dc);
   1531 #endif /* HPCFB_JUMP */
   1532 }
   1533 
   1534 /*
   1535  * allocattr
   1536  */
   1537 int
   1538 hpcfb_allocattr(void *cookie, int fg, int bg, int flags, long *attrp)
   1539 {
   1540 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
   1541 	struct rasops_info *ri = &dc->dc_rinfo;
   1542 
   1543 	return (rasops_emul.allocattr(ri, fg, bg, flags, attrp));
   1544 }
   1545