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hpcfb.c revision 1.1.2.10
      1 /*	$NetBSD: hpcfb.c,v 1.1.2.10 2002/09/17 21:19:33 nathanw 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 1.1.2.10 2002/09/17 21:19:33 nathanw Exp $");
     47 
     48 #define FBDEBUG
     49 static const char _copyright[] __attribute__ ((unused)) =
     50     "Copyright (c) 1999 Shin Takemura.  All rights reserved.";
     51 static const char _rcsid[] __attribute__ ((unused)) =
     52     "$NetBSD: hpcfb.c,v 1.1.2.10 2002/09/17 21:19:33 nathanw Exp $";
     53 
     54 #include <sys/param.h>
     55 #include <sys/systm.h>
     56 #include <sys/kernel.h>
     57 #include <sys/signalvar.h>
     58 #include <sys/map.h>
     59 #include <sys/proc.h>
     60 #include <sys/kthread.h>
     61 #include <sys/lock.h>
     62 #include <sys/user.h>
     63 #include <sys/device.h>
     64 #include <sys/conf.h>
     65 #include <sys/malloc.h>
     66 #include <sys/buf.h>
     67 #include <sys/ioctl.h>
     68 
     69 #include <uvm/uvm_extern.h>
     70 
     71 #include <machine/bus.h>
     72 
     73 #include <dev/wscons/wsconsio.h>
     74 #include <dev/wscons/wsdisplayvar.h>
     75 #include <dev/wscons/wscons_callbacks.h>
     76 
     77 #include <dev/wsfont/wsfont.h>
     78 #include <dev/rasops/rasops.h>
     79 
     80 #include <dev/hpc/hpcfbvar.h>
     81 #include <dev/hpc/hpcfbio.h>
     82 
     83 #include "bivideo.h"
     84 #if NBIVIDEO > 0
     85 #include <dev/hpc/bivideovar.h>
     86 #endif
     87 
     88 #ifdef FBDEBUG
     89 int	hpcfb_debug = 0;
     90 #define	DPRINTF(arg) if (hpcfb_debug) printf arg;
     91 #else
     92 #define	DPRINTF(arg)
     93 #endif
     94 
     95 #ifndef HPCFB_MAX_COLUMN
     96 #define HPCFB_MAX_COLUMN 130
     97 #endif /* HPCFB_MAX_COLUMN */
     98 #ifndef HPCFB_MAX_ROW
     99 #define HPCFB_MAX_ROW 80
    100 #endif /* HPCFB_MAX_ROW */
    101 
    102 /*
    103  * currently experimental
    104 #define HPCFB_JUMP
    105 */
    106 
    107 struct hpcfb_vchar {
    108 	u_int c;
    109 	long attr;
    110 };
    111 
    112 struct hpcfb_tvrow {
    113 	int maxcol;
    114 	int spacecol;
    115 	struct hpcfb_vchar col[HPCFB_MAX_COLUMN];
    116 };
    117 
    118 struct hpcfb_devconfig {
    119 	struct rasops_info	dc_rinfo;	/* rasops information */
    120 
    121 	int		dc_blanked;	/* currently had video disabled */
    122 	struct hpcfb_softc *dc_sc;
    123 	int dc_rows;
    124 	int dc_cols;
    125 	struct hpcfb_tvrow *dc_tvram;
    126 	int dc_curx;
    127 	int dc_cury;
    128 #ifdef HPCFB_JUMP
    129 	int dc_min_row;
    130 	int dc_max_row;
    131 	int dc_scroll;
    132 	struct callout dc_scroll_ch;
    133 	int dc_scroll_src;
    134 	int dc_scroll_dst;
    135 	int dc_scroll_num;
    136 #endif /* HPCFB_JUMP */
    137 	volatile int dc_state;
    138 #define HPCFB_DC_CURRENT		0x80000000
    139 #define HPCFB_DC_DRAWING		0x01	/* drawing raster ops */
    140 #define HPCFB_DC_TDRAWING		0x02	/* drawing tvram */
    141 #define HPCFB_DC_SCROLLPENDING		0x04	/* scroll is pending */
    142 #define HPCFB_DC_UPDATE			0x08	/* tvram update */
    143 #define HPCFB_DC_SCRDELAY		0x10	/* scroll time but delay it */
    144 #define HPCFB_DC_SCRTHREAD		0x20	/* in scroll thread or callout */
    145 #define HPCFB_DC_UPDATEALL		0x40	/* need to redraw all */
    146 #define HPCFB_DC_ABORT			0x80	/* abort redrawing */
    147 #define	HPCFB_DC_SWITCHREQ		0x100	/* switch request exist */
    148 	int	dc_memsize;
    149 	u_char *dc_fbaddr;
    150 };
    151 
    152 #define IS_DRAWABLE(dc) \
    153 	(((dc)->dc_state&HPCFB_DC_CURRENT)&& \
    154 	 (((dc)->dc_state&(HPCFB_DC_DRAWING|HPCFB_DC_SWITCHREQ)) == 0))
    155 
    156 #define HPCFB_MAX_SCREEN 5
    157 #define HPCFB_MAX_JUMP 5
    158 
    159 struct hpcfb_softc {
    160 	struct	device sc_dev;
    161 	struct	hpcfb_devconfig *sc_dc;	/* device configuration */
    162 	const struct hpcfb_accessops	*sc_accessops;
    163 	void *sc_accessctx;
    164 	void *sc_powerhook;	/* power management hook */
    165 	struct device *sc_wsdisplay;
    166 	int sc_screen_resumed;
    167 	int sc_polling;
    168 	int sc_mapping;
    169 	struct proc *sc_thread;
    170 	struct lock sc_lock;
    171 	void *sc_wantedscreen;
    172 	void (*sc_switchcb)(void *, int, int);
    173 	void *sc_switchcbarg;
    174 	struct callout sc_switch_callout;
    175 	int sc_nfbconf;
    176 	struct hpcfb_fbconf *sc_fbconflist;
    177 };
    178 
    179 /*
    180  *  function prototypes
    181  */
    182 int	hpcfbmatch(struct device *, struct cfdata *, void *);
    183 void	hpcfbattach(struct device *, struct device *, void *);
    184 int	hpcfbprint(void *, const char *);
    185 
    186 int	hpcfb_ioctl(void *, u_long, caddr_t, int, struct proc *);
    187 paddr_t	hpcfb_mmap(void *, off_t, int);
    188 
    189 void	hpcfb_refresh_screen(struct hpcfb_softc *);
    190 void	hpcfb_doswitch(struct hpcfb_softc *);
    191 
    192 #ifdef HPCFB_JUMP
    193 static void	hpcfb_create_thread(void *);
    194 static void	hpcfb_thread(void *);
    195 #endif /* HPCFB_JUMP */
    196 
    197 static int	hpcfb_init(struct hpcfb_fbconf *, struct hpcfb_devconfig *);
    198 static int	hpcfb_alloc_screen(void *, const struct wsscreen_descr *,
    199 		    void **, int *, int *, long *);
    200 static void	hpcfb_free_screen(void *, void *);
    201 static int	hpcfb_show_screen(void *, void *, int,
    202 		    void (*) (void *, int, int), void *);
    203 static void     hpcfb_pollc(void *, int);
    204 static void	hpcfb_power(int, void *);
    205 static void	hpcfb_cmap_reorder(struct hpcfb_fbconf *,
    206 		    struct hpcfb_devconfig *);
    207 
    208 static int	pow(int, int);
    209 
    210 void    hpcfb_cursor(void *, int, int, int);
    211 int     hpcfb_mapchar(void *, int, unsigned int *);
    212 void    hpcfb_putchar(void *, int, int, u_int, long);
    213 void    hpcfb_copycols(void *, int, int, int, int);
    214 void    hpcfb_erasecols(void *, int, int, int, long);
    215 void    hpcfb_redraw(void *, int, int, int);
    216 void    hpcfb_copyrows(void *, int, int, int);
    217 void    hpcfb_eraserows(void *, int, int, long);
    218 int     hpcfb_allocattr(void *, int, int, int, long *);
    219 void    hpcfb_cursor_raw(void *, int, int, int);
    220 
    221 #ifdef HPCFB_JUMP
    222 void	hpcfb_update(void *);
    223 void	hpcfb_do_scroll(void *);
    224 void	hpcfb_check_update(void *);
    225 #endif /* HPCFB_JUMP */
    226 
    227 struct wsdisplay_emulops hpcfb_emulops = {
    228 	hpcfb_cursor,
    229 	hpcfb_mapchar,
    230 	hpcfb_putchar,
    231 	hpcfb_copycols,
    232 	hpcfb_erasecols,
    233 	hpcfb_copyrows,
    234 	hpcfb_eraserows,
    235 	hpcfb_allocattr
    236 };
    237 
    238 /*
    239  *  static variables
    240  */
    241 struct cfattach hpcfb_ca = {
    242 	sizeof(struct hpcfb_softc), hpcfbmatch, hpcfbattach,
    243 };
    244 
    245 struct wsscreen_descr hpcfb_stdscreen = {
    246 	"std",
    247 	0, 0,	/* will be filled in -- XXX shouldn't, it's global */
    248 	&hpcfb_emulops,	/* XXX */
    249 	0, 0,
    250 	WSSCREEN_REVERSE
    251 };
    252 
    253 const struct wsscreen_descr *_hpcfb_scrlist[] = {
    254 	&hpcfb_stdscreen,
    255 	/* XXX other formats, graphics screen? */
    256 };
    257 
    258 struct wsscreen_list hpcfb_screenlist = {
    259 	sizeof(_hpcfb_scrlist) / sizeof(struct wsscreen_descr *),
    260 	_hpcfb_scrlist
    261 };
    262 
    263 struct wsdisplay_accessops hpcfb_accessops = {
    264 	hpcfb_ioctl,
    265 	hpcfb_mmap,
    266 	hpcfb_alloc_screen,
    267 	hpcfb_free_screen,
    268 	hpcfb_show_screen,
    269 	0 /* load_font */,
    270 	hpcfb_pollc
    271 };
    272 
    273 void    hpcfb_tv_putchar(struct hpcfb_devconfig *, int, int, u_int, long);
    274 void    hpcfb_tv_copycols(struct hpcfb_devconfig *, int, int, int, int);
    275 void    hpcfb_tv_erasecols(struct hpcfb_devconfig *, int, int, int, long);
    276 void    hpcfb_tv_copyrows(struct hpcfb_devconfig *, int, int, int);
    277 void    hpcfb_tv_eraserows(struct hpcfb_devconfig *, int, int, long);
    278 
    279 struct wsdisplay_emulops rasops_emul;
    280 
    281 static int hpcfbconsole;
    282 struct hpcfb_devconfig hpcfb_console_dc;
    283 struct wsscreen_descr hpcfb_console_wsscreen;
    284 struct hpcfb_tvrow hpcfb_console_tvram[HPCFB_MAX_ROW];
    285 
    286 /*
    287  *  function bodies
    288  */
    289 static int
    290 pow(int x, int n)
    291 {
    292 	int res = 1;
    293 	while (0 < n--) {
    294 		res *= x;
    295 	}
    296 	return (res);
    297 }
    298 
    299 int
    300 hpcfbmatch(struct device *parent, struct cfdata *match, void *aux)
    301 {
    302 	return (1);
    303 }
    304 
    305 void
    306 hpcfbattach(struct device *parent, struct device *self, void *aux)
    307 {
    308 	struct hpcfb_softc *sc = (struct hpcfb_softc *)self;
    309 	struct hpcfb_attach_args *ha = aux;
    310 	struct wsemuldisplaydev_attach_args wa;
    311 
    312 	sc->sc_accessops = ha->ha_accessops;
    313 	sc->sc_accessctx = ha->ha_accessctx;
    314 	sc->sc_nfbconf = ha->ha_nfbconf;
    315 	sc->sc_fbconflist = ha->ha_fbconflist;
    316 
    317 	if (hpcfbconsole) {
    318 		sc->sc_dc = &hpcfb_console_dc;
    319 		hpcfb_console_dc.dc_sc = sc;
    320 		printf(": %dx%d pixels, %d colors, %dx%d chars",
    321 		    sc->sc_dc->dc_rinfo.ri_width,sc->sc_dc->dc_rinfo.ri_height,
    322 		    pow(2, sc->sc_dc->dc_rinfo.ri_depth),
    323 		    sc->sc_dc->dc_rinfo.ri_cols,sc->sc_dc->dc_rinfo.ri_rows);
    324 		/* Set video chip dependent CLUT if any. */
    325 		if (sc->sc_accessops->setclut)
    326 			sc->sc_accessops->setclut(sc->sc_accessctx,
    327 			    &hpcfb_console_dc.dc_rinfo);
    328 	}
    329 	printf("\n");
    330 
    331 	sc->sc_polling = 0; /* XXX */
    332 	sc->sc_mapping = 0; /* XXX */
    333 	callout_init(&sc->sc_switch_callout);
    334 
    335 	/* Add a power hook to power management */
    336 	sc->sc_powerhook = powerhook_establish(hpcfb_power, sc);
    337 	if (sc->sc_powerhook == NULL)
    338 		printf("%s: WARNING: unable to establish power hook\n",
    339 		    sc->sc_dev.dv_xname);
    340 
    341 	wa.console = hpcfbconsole;
    342 	wa.scrdata = &hpcfb_screenlist;
    343 	wa.accessops = &hpcfb_accessops;
    344 	wa.accesscookie = sc;
    345 
    346 	sc->sc_wsdisplay = config_found(self, &wa, wsemuldisplaydevprint);
    347 
    348 #ifdef HPCFB_JUMP
    349 	/*
    350 	 * Create a kernel thread to scroll,
    351 	 */
    352 	kthread_create(hpcfb_create_thread, sc);
    353 #endif /* HPCFB_JUMP */
    354 }
    355 
    356 #ifdef HPCFB_JUMP
    357 void
    358 hpcfb_create_thread(void *arg)
    359 {
    360 	struct hpcfb_softc *sc = arg;
    361 
    362 	if (kthread_create1(hpcfb_thread, sc, &sc->sc_thread,
    363 	    "%s", sc->sc_dev.dv_xname) == 0)
    364 		return;
    365 
    366 	/*
    367 	 * We were unable to create the HPCFB thread; bail out.
    368 	 */
    369 	sc->sc_thread = 0;
    370 	printf("%s: unable to create thread, kernel hpcfb scroll support disabled\n",
    371 	    sc->sc_dev.dv_xname);
    372 }
    373 
    374 void
    375 hpcfb_thread(void *arg)
    376 {
    377 	struct hpcfb_softc *sc = arg;
    378 
    379 	/*
    380 	 * Loop forever, doing a periodic check for update events.
    381 	 */
    382 	for (;;) {
    383 		/* HPCFB_LOCK(sc); */
    384 		sc->sc_dc->dc_state |= HPCFB_DC_SCRTHREAD;
    385 		if (!sc->sc_mapping) /* draw only EMUL mode */
    386 			hpcfb_update(sc->sc_dc);
    387 		sc->sc_dc->dc_state &= ~HPCFB_DC_SCRTHREAD;
    388 		/* APM_UNLOCK(sc); */
    389 		(void) tsleep(sc, PWAIT, "hpcfb",  (8 * hz) / 7 / 10);
    390 	}
    391 }
    392 #endif /* HPCFB_JUMP */
    393 
    394 /* Print function (for parent devices). */
    395 int
    396 hpcfbprint(void *aux, const char *pnp)
    397 {
    398 	if (pnp)
    399 		printf("hpcfb at %s", pnp);
    400 
    401 	return (UNCONF);
    402 }
    403 
    404 int
    405 hpcfb_cnattach(struct hpcfb_fbconf *fbconf)
    406 {
    407 	struct hpcfb_fbconf __fbconf __attribute__((__unused__));
    408 	long defattr;
    409 
    410 	DPRINTF(("%s(%d): hpcfb_cnattach()\n", __FILE__, __LINE__));
    411 #if NBIVIDEO > 0
    412 	if (fbconf == 0) {
    413 		memset(&__fbconf, 0, sizeof(struct hpcfb_fbconf));
    414 		if (bivideo_getcnfb(&__fbconf) != 0)
    415 			return (ENXIO);
    416 		fbconf = &__fbconf;
    417 	}
    418 #endif /* NBIVIDEO > 0 */
    419 	memset(&hpcfb_console_dc, 0, sizeof(struct hpcfb_devconfig));
    420 	if (hpcfb_init(fbconf, &hpcfb_console_dc) != 0)
    421 		return (ENXIO);
    422 	hpcfb_console_dc.dc_state |= HPCFB_DC_CURRENT;
    423 
    424 	hpcfb_console_dc.dc_tvram = hpcfb_console_tvram;
    425 	/* clear screen */
    426 	memset(hpcfb_console_tvram, 0, sizeof(hpcfb_console_tvram));
    427 	hpcfb_redraw(&hpcfb_console_dc, 0, hpcfb_console_dc.dc_rows, 1);
    428 
    429 	hpcfb_console_wsscreen = hpcfb_stdscreen;
    430 	hpcfb_console_wsscreen.nrows = hpcfb_console_dc.dc_rows;
    431 	hpcfb_console_wsscreen.ncols = hpcfb_console_dc.dc_cols;
    432 	hpcfb_console_wsscreen.capabilities = hpcfb_console_dc.dc_rinfo.ri_caps;
    433 	hpcfb_allocattr(&hpcfb_console_dc,
    434 			WSCOL_WHITE, WSCOL_BLACK, 0, &defattr);
    435 	wsdisplay_cnattach(&hpcfb_console_wsscreen, &hpcfb_console_dc,
    436 	    0, 0, defattr);
    437 	hpcfbconsole = 1;
    438 
    439 	return (0);
    440 }
    441 
    442 int
    443 hpcfb_init(struct hpcfb_fbconf *fbconf,	struct hpcfb_devconfig *dc)
    444 {
    445 	struct rasops_info *ri;
    446 	vaddr_t fbaddr;
    447 
    448 	fbaddr = (vaddr_t)fbconf->hf_baseaddr;
    449 	dc->dc_fbaddr = (u_char *)fbaddr;
    450 
    451 	/* init rasops */
    452 	ri = &dc->dc_rinfo;
    453 	memset(ri, 0, sizeof(struct rasops_info));
    454 	ri->ri_depth = fbconf->hf_pixel_width;
    455 	ri->ri_bits = (caddr_t)fbaddr;
    456 	ri->ri_width = fbconf->hf_width;
    457 	ri->ri_height = fbconf->hf_height;
    458 	ri->ri_stride = fbconf->hf_bytes_per_line;
    459 #if 0
    460 	ri->ri_flg = RI_FORCEMONO | RI_CURSOR;
    461 #else
    462 	ri->ri_flg = RI_CURSOR;
    463 #endif
    464 	switch (ri->ri_depth) {
    465 	case 8:
    466 		if (32 <= fbconf->hf_pack_width &&
    467 		    (fbconf->hf_order_flags & HPCFB_REVORDER_BYTE) &&
    468 		    (fbconf->hf_order_flags & HPCFB_REVORDER_WORD)) {
    469 			ri->ri_flg |= RI_BSWAP;
    470 		}
    471 		break;
    472 	default:
    473 		if (fbconf->hf_order_flags & HPCFB_REVORDER_BYTE) {
    474 #if BYTE_ORDER == BIG_ENDIAN
    475 			ri->ri_flg |= RI_BSWAP;
    476 #endif
    477 		} else {
    478 #if BYTE_ORDER == LITTLE_ENDIAN
    479 			ri->ri_flg |= RI_BSWAP;
    480 #endif
    481 		}
    482 		break;
    483 	}
    484 
    485 	if (rasops_init(ri, HPCFB_MAX_ROW, HPCFB_MAX_COLUMN)) {
    486 		panic("%s(%d): rasops_init() failed!", __FILE__, __LINE__);
    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);
    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 forground 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, u_long cmd, caddr_t data, int flag, struct proc *p)
    558 {
    559 	struct hpcfb_softc *sc = v;
    560 	struct hpcfb_devconfig *dc = sc->sc_dc;
    561 	struct wsdisplay_fbinfo *wdf;
    562 
    563 	DPRINTF(("hpcfb_ioctl(cmd=0x%lx)\n", cmd));
    564 	switch (cmd) {
    565 	case WSKBDIO_BELL:
    566 		return (0);
    567 		break;
    568 
    569 	case WSDISPLAYIO_GTYPE:
    570 		*(u_int *)data = WSDISPLAY_TYPE_HPCFB;
    571 		return (0);
    572 
    573 	case WSDISPLAYIO_GINFO:
    574 		wdf = (void *)data;
    575 		wdf->height = dc->dc_rinfo.ri_height;
    576 		wdf->width = dc->dc_rinfo.ri_width;
    577 		wdf->depth = dc->dc_rinfo.ri_depth;
    578 		wdf->cmsize = 256;	/* XXXX */
    579 		return (0);
    580 
    581 	case WSDISPLAYIO_SMODE:
    582 		if (*(int *)data == WSDISPLAYIO_MODE_EMUL){
    583 			if (sc->sc_mapping){
    584 				sc->sc_mapping = 0;
    585 				if (dc->dc_state&HPCFB_DC_DRAWING)
    586 					dc->dc_state &= ~HPCFB_DC_ABORT;
    587 #ifdef HPCFB_FORCE_REDRAW
    588 				hpcfb_refresh_screen(sc);
    589 #else
    590 				dc->dc_state |= HPCFB_DC_UPDATEALL;
    591 #endif
    592 			}
    593 		} else {
    594 			if (!sc->sc_mapping) {
    595 				sc->sc_mapping = 1;
    596 				dc->dc_state |= HPCFB_DC_ABORT;
    597 			}
    598 			sc->sc_mapping = 1;
    599 		}
    600 		if (sc && sc->sc_accessops->iodone)
    601 			(*sc->sc_accessops->iodone)(sc->sc_accessctx);
    602 		return (0);
    603 
    604 	case WSDISPLAYIO_GETCMAP:
    605 	case WSDISPLAYIO_PUTCMAP:
    606 	case WSDISPLAYIO_SVIDEO:
    607 	case WSDISPLAYIO_GVIDEO:
    608 	case WSDISPLAYIO_GETPARAM:
    609 	case WSDISPLAYIO_SETPARAM:
    610 	case HPCFBIO_GCONF:
    611 	case HPCFBIO_SCONF:
    612 	case HPCFBIO_GDSPCONF:
    613 	case HPCFBIO_SDSPCONF:
    614 	case HPCFBIO_GOP:
    615 	case HPCFBIO_SOP:
    616 		return ((*sc->sc_accessops->ioctl)(sc->sc_accessctx,
    617 		    cmd, data, flag, p));
    618 
    619 	default:
    620 		if (IOCGROUP(cmd) != 't')
    621 			DPRINTF(("%s(%d): hpcfb_ioctl(%lx, %lx) grp=%c num=%ld\n",
    622 			    __FILE__, __LINE__,
    623 			    cmd, (u_long)data, (char)IOCGROUP(cmd), cmd&0xff));
    624 		break;
    625 	}
    626 
    627 	return (EPASSTHROUGH); /* Inappropriate ioctl for device */
    628 }
    629 
    630 paddr_t
    631 hpcfb_mmap(void *v, off_t offset, int prot)
    632 {
    633 	struct hpcfb_softc *sc = v;
    634 
    635 	return ((*sc->sc_accessops->mmap)(sc->sc_accessctx, offset, prot));
    636 }
    637 
    638 static void
    639 hpcfb_power(int why, void *arg)
    640 {
    641 	struct hpcfb_softc *sc = arg;
    642 
    643 	if (sc->sc_dc == NULL)
    644 		return;	/* You have no screen yet. */
    645 
    646 	switch (why) {
    647 	case PWR_STANDBY:
    648 		break;
    649 	case PWR_SOFTSUSPEND:
    650 		/* XXX, casting to 'struct wsdisplay_softc *' means
    651 		   that you should not call the method here... */
    652 		sc->sc_screen_resumed = wsdisplay_getactivescreen(
    653 			(struct wsdisplay_softc *)sc->sc_wsdisplay);
    654 		if (wsdisplay_switch(sc->sc_wsdisplay,
    655 		    WSDISPLAY_NULLSCREEN,
    656 		    1 /* waitok */) == 0) {
    657 			wsscreen_switchwait(
    658 				(struct wsdisplay_softc *)sc->sc_wsdisplay,
    659 				WSDISPLAY_NULLSCREEN);
    660 		} else {
    661 			sc->sc_screen_resumed = WSDISPLAY_NULLSCREEN;
    662 		}
    663 
    664 		sc->sc_dc->dc_state &= ~HPCFB_DC_CURRENT;
    665 		break;
    666 	case PWR_SOFTRESUME:
    667 		sc->sc_dc->dc_state |= HPCFB_DC_CURRENT;
    668 		if (sc->sc_screen_resumed != WSDISPLAY_NULLSCREEN)
    669 			wsdisplay_switch(sc->sc_wsdisplay,
    670 			    sc->sc_screen_resumed,
    671 			    1 /* waitok */);
    672 		break;
    673 	}
    674 }
    675 
    676 void
    677 hpcfb_refresh_screen(struct hpcfb_softc *sc)
    678 {
    679 	struct hpcfb_devconfig *dc = sc->sc_dc;
    680 	int x, y;
    681 
    682 	DPRINTF(("hpcfb_refres_screen()\n"));
    683 	if (dc == NULL)
    684 		return;
    685 
    686 #ifdef HPCFB_JUMP
    687 	if (dc->dc_state&HPCFB_DC_SCROLLPENDING) {
    688 		dc->dc_state &= ~HPCFB_DC_SCROLLPENDING;
    689 		dc->dc_state &= ~HPCFB_DC_UPDATE;
    690 		callout_stop(&dc->dc_scroll_ch);
    691 	}
    692 #endif /* HPCFB_JUMP */
    693 	/*
    694 	 * refresh screen
    695 	 */
    696 	dc->dc_state &= ~HPCFB_DC_UPDATEALL;
    697 	x = dc->dc_curx;
    698 	y = dc->dc_cury;
    699 	if (0 <= x && 0 <= y)
    700 		hpcfb_cursor_raw(dc, 0,  y, x); /* disable cursor */
    701 	/* redraw all text */
    702 	hpcfb_redraw(dc, 0, dc->dc_rows, 1);
    703 	if (0 <= x && 0 <= y)
    704 		hpcfb_cursor_raw(dc, 1,  y, x); /* enable cursor */
    705 }
    706 
    707 static int
    708 hpcfb_alloc_screen(void *v, const struct wsscreen_descr *type, void **cookiep,
    709     int *curxp, int *curyp, long *attrp)
    710 {
    711 	struct hpcfb_softc *sc = v;
    712 	struct hpcfb_devconfig *dc;
    713 
    714 	DPRINTF(("%s(%d): hpcfb_alloc_screen()\n", __FILE__, __LINE__));
    715 
    716 	dc = malloc(sizeof(struct hpcfb_devconfig), M_DEVBUF, M_WAITOK|M_ZERO);
    717 	if (dc == NULL)
    718 		return (ENOMEM);
    719 
    720 	dc->dc_sc = sc;
    721 	if (hpcfb_init(&sc->sc_fbconflist[0], dc) != 0)
    722 		return (EINVAL);
    723 	if (sc->sc_accessops->font) {
    724 		sc->sc_accessops->font(sc->sc_accessctx,
    725 		    dc->dc_rinfo.ri_font);
    726 	}
    727 	/* Set video chip dependent CLUT if any. */
    728 	if (sc->sc_accessops->setclut)
    729 		sc->sc_accessops->setclut(sc->sc_accessctx, &dc->dc_rinfo);
    730 	printf("hpcfb: %dx%d pixels, %d colors, %dx%d chars\n",
    731 	    dc->dc_rinfo.ri_width, dc->dc_rinfo.ri_height,
    732 	    pow(2, dc->dc_rinfo.ri_depth),
    733 	    dc->dc_rinfo.ri_cols, dc->dc_rinfo.ri_rows);
    734 
    735 	/*
    736 	 * XXX, wsdisplay won't reffer the information in wsscreen_descr
    737 	 * structure until alloc_screen will be called, at least, under
    738 	 * current implementation...
    739 	 */
    740 	hpcfb_stdscreen.nrows = dc->dc_rows;
    741         hpcfb_stdscreen.ncols = dc->dc_cols;
    742 	hpcfb_stdscreen.capabilities = dc->dc_rinfo.ri_caps;
    743 
    744 	dc->dc_fbaddr = dc->dc_rinfo.ri_bits;
    745 	dc->dc_rows = dc->dc_rinfo.ri_rows;
    746 	dc->dc_cols = dc->dc_rinfo.ri_cols;
    747 	dc->dc_memsize = dc->dc_rinfo.ri_stride * dc->dc_rinfo.ri_height;
    748 
    749 	dc->dc_curx = -1;
    750 	dc->dc_cury = -1;
    751 	dc->dc_tvram = malloc(sizeof(struct hpcfb_tvrow)*dc->dc_rows,
    752 	    M_DEVBUF, M_WAITOK|M_ZERO);
    753 	if (dc->dc_tvram == NULL){
    754 		free(dc, M_DEVBUF);
    755 		return (ENOMEM);
    756 	}
    757 
    758 	*curxp = 0;
    759 	*curyp = 0;
    760 	*cookiep = dc;
    761 	hpcfb_allocattr(*cookiep, WSCOL_WHITE, WSCOL_BLACK, 0, attrp);
    762 	DPRINTF(("%s(%d): hpcfb_alloc_screen(): 0x%p\n",
    763 	    __FILE__, __LINE__, dc));
    764 
    765 	return (0);
    766 }
    767 
    768 static void
    769 hpcfb_free_screen(void *v, void *cookie)
    770 {
    771 	struct hpcfb_devconfig *dc = cookie;
    772 
    773 	DPRINTF(("%s(%d): hpcfb_free_screen(0x%p)\n",
    774 	    __FILE__, __LINE__, cookie));
    775 #ifdef DIAGNOSTIC
    776 	if (dc == &hpcfb_console_dc)
    777 		panic("hpcfb_free_screen: console");
    778 #endif
    779 	free(dc->dc_tvram, M_DEVBUF);
    780 	free(dc, M_DEVBUF);
    781 }
    782 
    783 static int
    784 hpcfb_show_screen(void *v, void *cookie, int waitok,
    785     void (*cb)(void *, int, int), void *cbarg)
    786 {
    787 	struct hpcfb_softc *sc = v;
    788 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
    789 	struct hpcfb_devconfig *odc;
    790 
    791 	DPRINTF(("%s(%d): hpcfb_show_screen(0x%p)\n",
    792 	    __FILE__, __LINE__, dc));
    793 
    794 	odc = sc->sc_dc;
    795 
    796 	if (dc == NULL || odc == dc) {
    797 		hpcfb_refresh_screen(sc);
    798 		return (0);
    799 	}
    800 
    801 	if (odc != NULL) {
    802 		odc->dc_state |= HPCFB_DC_SWITCHREQ;
    803 
    804 		if ((odc->dc_state&HPCFB_DC_DRAWING) != 0) {
    805 			odc->dc_state |= HPCFB_DC_ABORT;
    806 		}
    807 	}
    808 
    809 	sc->sc_wantedscreen = cookie;
    810 	sc->sc_switchcb = cb;
    811 	sc->sc_switchcbarg = cbarg;
    812 	if (cb) {
    813 		callout_reset(&sc->sc_switch_callout, 0,
    814 		    (void(*)(void *))hpcfb_doswitch, sc);
    815 		return (EAGAIN);
    816 	}
    817 
    818 	hpcfb_doswitch(sc);
    819 	return (0);
    820 }
    821 
    822 void
    823 hpcfb_doswitch(struct hpcfb_softc *sc)
    824 {
    825 	struct hpcfb_devconfig *dc;
    826 	struct hpcfb_devconfig *odc;
    827 
    828 	DPRINTF(("hpcfb_doswitch()\n"));
    829 	odc = sc->sc_dc;
    830 	dc = sc->sc_wantedscreen;
    831 
    832 	if (!dc) {
    833 		(*sc->sc_switchcb)(sc->sc_switchcbarg, EIO, 0);
    834 		odc->dc_state &= ~HPCFB_DC_SWITCHREQ;
    835 		return;
    836 	}
    837 
    838 	if (odc == dc) {
    839 		odc->dc_state &= ~HPCFB_DC_SWITCHREQ;
    840 		return;
    841 	}
    842 
    843 	if (odc) {
    844 #ifdef HPCFB_JUMP
    845 		odc->dc_state |= HPCFB_DC_ABORT;
    846 #endif /* HPCFB_JUMP */
    847 
    848 		if (odc->dc_curx >= 0 && odc->dc_cury >= 0)
    849 			hpcfb_cursor_raw(odc, 0,  odc->dc_cury, odc->dc_curx);
    850 		/* disable cursor */
    851 		/* disable old screen */
    852 		odc->dc_state &= ~HPCFB_DC_CURRENT;
    853 		/* XXX, This is too dangerous.
    854 		odc->dc_rinfo.ri_bits = NULL;
    855 		*/
    856 	}
    857 	/* switch screen to new one */
    858 	dc->dc_state |= HPCFB_DC_CURRENT;
    859 	dc->dc_state &= ~HPCFB_DC_ABORT;
    860 	dc->dc_rinfo.ri_bits = dc->dc_fbaddr;
    861 	sc->sc_dc = dc;
    862 
    863 	/* redraw screen image */
    864 	hpcfb_refresh_screen(sc);
    865 
    866 	sc->sc_wantedscreen = NULL;
    867 	if (sc->sc_switchcb)
    868 		(*sc->sc_switchcb)(sc->sc_switchcbarg, 0, 0);
    869 
    870 	if (odc != NULL)
    871 		odc->dc_state &= ~HPCFB_DC_SWITCHREQ;
    872 	dc->dc_state &= ~HPCFB_DC_SWITCHREQ;
    873 	return;
    874 }
    875 
    876 static void
    877 hpcfb_pollc(void *v, int on)
    878 {
    879 	struct hpcfb_softc *sc = v;
    880 
    881 	if (sc == NULL)
    882 		return;
    883 	sc->sc_polling = on;
    884 	if (sc->sc_accessops->iodone)
    885 		(*sc->sc_accessops->iodone)(sc->sc_accessctx);
    886 	if (on) {
    887 		hpcfb_refresh_screen(sc);
    888 		if (sc->sc_accessops->iodone)
    889 			(*sc->sc_accessops->iodone)(sc->sc_accessctx);
    890 	}
    891 
    892 	return;
    893 }
    894 
    895 /*
    896  * cursor
    897  */
    898 void
    899 hpcfb_cursor(void *cookie, int on, int row, int col)
    900 {
    901 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
    902 
    903 	if (on) {
    904 		dc->dc_curx = col;
    905 		dc->dc_cury = row;
    906 	} else {
    907 		dc->dc_curx = -1;
    908 		dc->dc_cury = -1;
    909 	}
    910 
    911 	hpcfb_cursor_raw(cookie, on, row, col);
    912 }
    913 
    914 void
    915 hpcfb_cursor_raw(cookie, on, row, col)
    916 	void *cookie;
    917 	int on, row, col;
    918 {
    919 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
    920 	struct hpcfb_softc *sc = dc->dc_sc;
    921 	struct rasops_info *ri = &dc->dc_rinfo;
    922 	int curwidth, curheight;
    923 	int xoff, yoff;
    924 
    925 #ifdef HPCFB_JUMP
    926 	if (dc->dc_state&HPCFB_DC_SCROLLPENDING) {
    927 		dc->dc_state |= HPCFB_DC_UPDATE;
    928 		return;
    929 	}
    930 #endif /* HPCFB_JUMP */
    931 	if (!IS_DRAWABLE(dc)) {
    932 		return;
    933 	}
    934 
    935 	if (ri->ri_bits == NULL)
    936 		return;
    937 
    938 	dc->dc_state |= HPCFB_DC_DRAWING;
    939 	if (sc && sc->sc_accessops->cursor) {
    940 		xoff = col * ri->ri_font->fontwidth;
    941 		yoff = row * ri->ri_font->fontheight;
    942 		curheight = ri->ri_font->fontheight;
    943 		curwidth = ri->ri_font->fontwidth;
    944 		(*sc->sc_accessops->cursor)(sc->sc_accessctx,
    945 		    on, xoff, yoff, curwidth, curheight);
    946 	} else
    947 		rasops_emul.cursor(ri, on, row, col);
    948 	dc->dc_state &= ~HPCFB_DC_DRAWING;
    949 }
    950 
    951 /*
    952  * mapchar
    953  */
    954 int
    955 hpcfb_mapchar(void *cookie, int c, unsigned int *cp)
    956 {
    957 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
    958 	struct rasops_info *ri = &dc->dc_rinfo;
    959 
    960 	return (rasops_emul.mapchar(ri, c, cp));
    961 }
    962 
    963 /*
    964  * putchar
    965  */
    966 void
    967 hpcfb_tv_putchar(struct hpcfb_devconfig *dc, int row, int col, u_int uc,
    968     long attr)
    969 {
    970 	struct hpcfb_tvrow *vscn = dc->dc_tvram;
    971 	struct hpcfb_vchar *vc = &vscn[row].col[col];
    972 	struct hpcfb_vchar *vcb;
    973 
    974 	if (vscn == 0)
    975 		return;
    976 
    977 	dc->dc_state |= HPCFB_DC_TDRAWING;
    978 #ifdef HPCFB_JUMP
    979 	if (row < dc->dc_min_row)
    980 		dc->dc_min_row = row;
    981 	if (row > dc->dc_max_row)
    982 		dc->dc_max_row = row;
    983 
    984 #endif /* HPCFB_JUMP */
    985 	if (vscn[row].maxcol +1 == col)
    986 		vscn[row].maxcol = col;
    987 	else if (vscn[row].maxcol < col) {
    988 		vcb =  &vscn[row].col[vscn[row].maxcol+1];
    989 		memset(vcb, 0,
    990 		    sizeof(struct hpcfb_vchar)*(col-vscn[row].maxcol-1));
    991 		vscn[row].maxcol = col;
    992 	}
    993 	vc->c = uc;
    994 	vc->attr = attr;
    995 	dc->dc_state &= ~HPCFB_DC_TDRAWING;
    996 #ifdef HPCFB_JUMP
    997 	hpcfb_check_update(dc);
    998 #endif /* HPCFB_JUMP */
    999 }
   1000 
   1001 void
   1002 hpcfb_putchar(void *cookie, int row, int col, u_int uc, long attr)
   1003 {
   1004 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
   1005 	struct hpcfb_softc *sc = dc->dc_sc;
   1006 	struct rasops_info *ri = &dc->dc_rinfo;
   1007 	int xoff;
   1008 	int yoff;
   1009 	int fclr, uclr;
   1010 	struct wsdisplay_font *font;
   1011 
   1012 	hpcfb_tv_putchar(dc, row, col, uc, attr);
   1013 #ifdef HPCFB_JUMP
   1014 	if (dc->dc_state&HPCFB_DC_SCROLLPENDING) {
   1015 		dc->dc_state |= HPCFB_DC_UPDATE;
   1016 		return;
   1017 	}
   1018 #endif /* HPCFB_JUMP */
   1019 
   1020 	if (!IS_DRAWABLE(dc)) {
   1021 		return;
   1022 	}
   1023 
   1024 	if (ri->ri_bits == NULL)
   1025 		return;
   1026 
   1027 	dc->dc_state |= HPCFB_DC_DRAWING;
   1028 	if (sc && sc->sc_accessops->putchar
   1029 	    && (dc->dc_state&HPCFB_DC_CURRENT)) {
   1030 		font = ri->ri_font;
   1031 		yoff = row * ri->ri_font->fontheight;
   1032 		xoff =  col * ri->ri_font->fontwidth;
   1033 		fclr = ri->ri_devcmap[((u_int)attr >> 24) & 15];
   1034 		uclr = ri->ri_devcmap[((u_int)attr >> 16) & 15];
   1035 
   1036 		(*sc->sc_accessops->putchar)(sc->sc_accessctx,
   1037 		    xoff, yoff, font, fclr, uclr, uc, attr);
   1038 	} else
   1039 		rasops_emul.putchar(ri, row, col, uc, attr);
   1040 	dc->dc_state &= ~HPCFB_DC_DRAWING;
   1041 #ifdef HPCFB_JUMP
   1042 	hpcfb_check_update(dc);
   1043 #endif /* HPCFB_JUMP */
   1044 }
   1045 
   1046 /*
   1047  * copycols
   1048  */
   1049 void
   1050 hpcfb_tv_copycols(struct hpcfb_devconfig *dc, int row, int srccol, int dstcol,
   1051     int ncols)
   1052 {
   1053 	struct hpcfb_tvrow *vscn = dc->dc_tvram;
   1054 	struct hpcfb_vchar *svc = &vscn[row].col[srccol];
   1055 	struct hpcfb_vchar *dvc = &vscn[row].col[dstcol];
   1056 
   1057 	if (vscn == 0)
   1058 		return;
   1059 
   1060 	dc->dc_state |= HPCFB_DC_TDRAWING;
   1061 #ifdef HPCFB_JUMP
   1062 	if (row < dc->dc_min_row)
   1063 		dc->dc_min_row = row;
   1064 	if (row > dc->dc_max_row)
   1065 		dc->dc_max_row = row;
   1066 #endif /* HPCFB_JUMP */
   1067 
   1068 	memcpy(dvc, svc, ncols*sizeof(struct hpcfb_vchar));
   1069 	if (vscn[row].maxcol < srccol+ncols-1)
   1070 		vscn[row].maxcol = srccol+ncols-1;
   1071 	if (vscn[row].maxcol < dstcol+ncols-1)
   1072 		vscn[row].maxcol = dstcol+ncols-1;
   1073 	dc->dc_state &= ~HPCFB_DC_TDRAWING;
   1074 #ifdef HPCFB_JUMP
   1075 	hpcfb_check_update(dc);
   1076 #endif /* HPCFB_JUMP */
   1077 }
   1078 
   1079 void
   1080 hpcfb_copycols(void *cookie, int row, int srccol, int dstcol, int ncols)
   1081 {
   1082 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
   1083 	struct hpcfb_softc *sc = dc->dc_sc;
   1084 	struct rasops_info *ri = &dc->dc_rinfo;
   1085 	int srcxoff,dstxoff;
   1086 	int srcyoff,dstyoff;
   1087 	int height, width;
   1088 
   1089 	hpcfb_tv_copycols(dc, row, srccol, dstcol, ncols);
   1090 #ifdef HPCFB_JUMP
   1091 	if (dc->dc_state&HPCFB_DC_SCROLLPENDING) {
   1092 		dc->dc_state |= HPCFB_DC_UPDATE;
   1093 		return;
   1094 	}
   1095 #endif /* HPCFB_JUMP */
   1096 	if (!IS_DRAWABLE(dc)) {
   1097 		return;
   1098 	}
   1099 
   1100 	if (ri->ri_bits == NULL)
   1101 		return;
   1102 
   1103 	dc->dc_state |= HPCFB_DC_DRAWING;
   1104 	if (sc && sc->sc_accessops->bitblit
   1105 	    && (dc->dc_state&HPCFB_DC_CURRENT)) {
   1106 		srcxoff = srccol * ri->ri_font->fontwidth;
   1107 		srcyoff = row * ri->ri_font->fontheight;
   1108 		dstxoff = dstcol * ri->ri_font->fontwidth;
   1109 		dstyoff = row * ri->ri_font->fontheight;
   1110 		width = ncols * ri->ri_font->fontwidth;
   1111 		height = ri->ri_font->fontheight;
   1112 		(*sc->sc_accessops->bitblit)(sc->sc_accessctx,
   1113 		    srcxoff, srcyoff, dstxoff, dstyoff, height, width);
   1114 	} else
   1115 		rasops_emul.copycols(ri, row, srccol, dstcol, ncols);
   1116 	dc->dc_state &= ~HPCFB_DC_DRAWING;
   1117 #ifdef HPCFB_JUMP
   1118 	hpcfb_check_update(dc);
   1119 #endif /* HPCFB_JUMP */
   1120 }
   1121 
   1122 
   1123 /*
   1124  * erasecols
   1125  */
   1126 void
   1127 hpcfb_tv_erasecols(struct hpcfb_devconfig *dc, int row, int startcol,
   1128     int ncols, long attr)
   1129 {
   1130 	struct hpcfb_tvrow *vscn = dc->dc_tvram;
   1131 
   1132 	if (vscn == 0)
   1133 		return;
   1134 
   1135 	dc->dc_state |= HPCFB_DC_TDRAWING;
   1136 #ifdef HPCFB_JUMP
   1137 	if (row < dc->dc_min_row)
   1138 		dc->dc_min_row = row;
   1139 	if (row > dc->dc_max_row)
   1140 		dc->dc_max_row = row;
   1141 #endif /* HPCFB_JUMP */
   1142 
   1143 	vscn[row].maxcol = startcol-1;
   1144 	if (vscn[row].spacecol < startcol+ncols-1)
   1145 		vscn[row].spacecol = startcol+ncols-1;
   1146 	dc->dc_state &= ~HPCFB_DC_TDRAWING;
   1147 #ifdef HPCFB_JUMP
   1148 	hpcfb_check_update(dc);
   1149 #endif /* HPCFB_JUMP */
   1150 }
   1151 
   1152 void
   1153 hpcfb_erasecols(void *cookie, int row, int startcol, int ncols, long attr)
   1154 {
   1155 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
   1156 	struct hpcfb_softc *sc = dc->dc_sc;
   1157 	struct rasops_info *ri = &dc->dc_rinfo;
   1158 	int xoff, yoff;
   1159 	int width, height;
   1160 
   1161 	hpcfb_tv_erasecols(dc, row, startcol, ncols, attr);
   1162 #ifdef HPCFB_JUMP
   1163 	if (dc->dc_state&HPCFB_DC_SCROLLPENDING) {
   1164 		dc->dc_state |= HPCFB_DC_UPDATE;
   1165 		return;
   1166 	}
   1167 #endif /* HPCFB_JUMP */
   1168 	if (!IS_DRAWABLE(dc)) {
   1169 		return;
   1170 	}
   1171 
   1172 	if (ri->ri_bits == NULL)
   1173 		return;
   1174 
   1175 	dc->dc_state |= HPCFB_DC_DRAWING;
   1176 	if (sc && sc->sc_accessops->erase
   1177 	    && (dc->dc_state&HPCFB_DC_CURRENT)) {
   1178 		xoff = startcol * ri->ri_font->fontwidth;
   1179 		yoff = row * ri->ri_font->fontheight;
   1180 		width = ncols * ri->ri_font->fontwidth;
   1181 		height = ri->ri_font->fontheight;
   1182 		(*sc->sc_accessops->erase)(sc->sc_accessctx,
   1183 		    xoff, yoff, height, width, attr);
   1184 	} else
   1185 		rasops_emul.erasecols(ri, row, startcol, ncols, attr);
   1186 	dc->dc_state &= ~HPCFB_DC_DRAWING;
   1187 #ifdef HPCFB_JUMP
   1188 	hpcfb_check_update(dc);
   1189 #endif /* HPCFB_JUMP */
   1190 }
   1191 
   1192 /*
   1193  * Copy rows.
   1194  */
   1195 void
   1196 hpcfb_tv_copyrows(struct hpcfb_devconfig *dc, int src, int dst, int num)
   1197 {
   1198 	struct hpcfb_tvrow *vscn = dc->dc_tvram;
   1199 	struct hpcfb_tvrow *svc = &vscn[src];
   1200 	struct hpcfb_tvrow *dvc = &vscn[dst];
   1201 	int i;
   1202 	int d;
   1203 
   1204 	if (vscn == 0)
   1205 		return;
   1206 
   1207 	dc->dc_state |= HPCFB_DC_TDRAWING;
   1208 #ifdef HPCFB_JUMP
   1209 	if (dst < dc->dc_min_row)
   1210 		dc->dc_min_row = dst;
   1211 	if (dst + num > dc->dc_max_row)
   1212 		dc->dc_max_row = dst + num -1;
   1213 #endif /* HPCFB_JUMP */
   1214 
   1215 	if (svc > dvc)
   1216 		d = 1;
   1217 	else if (svc < dvc) {
   1218 		svc += num-1;
   1219 		dvc += num-1;
   1220 		d = -1;
   1221 	} else  {
   1222 		dc->dc_state &= ~HPCFB_DC_TDRAWING;
   1223 #ifdef HPCFB_JUMP
   1224 		hpcfb_check_update(dc);
   1225 #endif /* HPCFB_JUMP */
   1226 		return;
   1227 	}
   1228 
   1229 	for (i = 0; i < num; i++) {
   1230 		memcpy(&dvc->col[0], &svc->col[0], sizeof(struct hpcfb_vchar)*(svc->maxcol+1));
   1231 		if (svc->maxcol < dvc->maxcol && dvc->spacecol < dvc->maxcol)
   1232 			dvc->spacecol = dvc->maxcol;
   1233 		dvc->maxcol = svc->maxcol;
   1234 		svc+=d;
   1235 		dvc+=d;
   1236 	}
   1237 	dc->dc_state &= ~HPCFB_DC_TDRAWING;
   1238 #ifdef HPCFB_JUMP
   1239 	hpcfb_check_update(dc);
   1240 #endif /* HPCFB_JUMP */
   1241 }
   1242 
   1243 void
   1244 hpcfb_redraw(cookie, row, num, all)
   1245 	void *cookie;
   1246 	int row, num;
   1247 	int all;
   1248 {
   1249 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
   1250 	struct rasops_info *ri = &dc->dc_rinfo;
   1251 	int cols;
   1252 	struct hpcfb_tvrow *vscn = dc->dc_tvram;
   1253 	struct hpcfb_vchar *svc;
   1254 	int i, j;
   1255 
   1256 #ifdef HPCFB_JUMP
   1257 	if (dc->dc_state&HPCFB_DC_SCROLLPENDING) {
   1258 		dc->dc_state |= HPCFB_DC_UPDATE;
   1259 		return;
   1260 	}
   1261 #endif /* HPCFB_JUMP */
   1262 	if (dc->dc_sc != NULL
   1263 	    && !dc->dc_sc->sc_polling
   1264 	    && dc->dc_sc->sc_mapping)
   1265 		return;
   1266 
   1267 	dc->dc_state &= ~HPCFB_DC_ABORT;
   1268 
   1269 	if (vscn == 0)
   1270 		return;
   1271 
   1272 	if (!IS_DRAWABLE(dc)) {
   1273 		return;
   1274 	}
   1275 
   1276 	if (ri->ri_bits == NULL)
   1277 		return;
   1278 
   1279 	dc->dc_state |= HPCFB_DC_DRAWING;
   1280 	dc->dc_state |= HPCFB_DC_TDRAWING;
   1281 	for (i = 0; i < num; i++) {
   1282 		if (dc->dc_state&HPCFB_DC_ABORT)
   1283 			break;
   1284 		if ((dc->dc_state&HPCFB_DC_CURRENT) == 0)
   1285 			break;
   1286 		cols = vscn[row+i].maxcol;
   1287 		for (j = 0; j <= cols; j++) {
   1288 			if (dc->dc_state&HPCFB_DC_ABORT)
   1289 				continue;
   1290 			if ((dc->dc_state&HPCFB_DC_CURRENT) == 0)
   1291 				continue;
   1292 			svc = &vscn[row+i].col[j];
   1293 			rasops_emul.putchar(ri, row + i, j, svc->c, svc->attr);
   1294 		}
   1295 		if (all)
   1296 			cols = dc->dc_cols-1;
   1297 		else
   1298 			cols = vscn[row+i].spacecol;
   1299 		for (; j <= cols; j++) {
   1300 			if (dc->dc_state&HPCFB_DC_ABORT)
   1301 				continue;
   1302 			if ((dc->dc_state&HPCFB_DC_CURRENT) == 0)
   1303 				continue;
   1304 			rasops_emul.putchar(ri, row + i, j, ' ', 0);
   1305 		}
   1306 		vscn[row+i].spacecol = 0;
   1307 	}
   1308 	if (dc->dc_state&HPCFB_DC_ABORT)
   1309 		dc->dc_state &= ~HPCFB_DC_ABORT;
   1310 	dc->dc_state &= ~HPCFB_DC_DRAWING;
   1311 	dc->dc_state &= ~HPCFB_DC_TDRAWING;
   1312 #ifdef HPCFB_JUMP
   1313 	hpcfb_check_update(dc);
   1314 #endif /* HPCFB_JUMP */
   1315 }
   1316 
   1317 #ifdef HPCFB_JUMP
   1318 void
   1319 hpcfb_update(void *v)
   1320 {
   1321 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)v;
   1322 
   1323 	/* callout_stop(&dc->dc_scroll_ch); */
   1324 	dc->dc_state &= ~HPCFB_DC_SCROLLPENDING;
   1325 	if (dc->dc_curx > 0 && dc->dc_cury > 0)
   1326 		hpcfb_cursor_raw(dc, 0,  dc->dc_cury, dc->dc_curx);
   1327 	if ((dc->dc_state&HPCFB_DC_UPDATEALL)) {
   1328 		hpcfb_redraw(dc, 0, dc->dc_rows, 1);
   1329 		dc->dc_state &= ~(HPCFB_DC_UPDATE|HPCFB_DC_UPDATEALL);
   1330 	} else if ((dc->dc_state&HPCFB_DC_UPDATE)) {
   1331 		hpcfb_redraw(dc, dc->dc_min_row,
   1332 		    dc->dc_max_row - dc->dc_min_row, 0);
   1333 		dc->dc_state &= ~HPCFB_DC_UPDATE;
   1334 	} else {
   1335 		hpcfb_redraw(dc, dc->dc_scroll_dst, dc->dc_scroll_num, 0);
   1336 	}
   1337 	if (dc->dc_curx > 0 && dc->dc_cury > 0)
   1338 		hpcfb_cursor_raw(dc, 1,  dc->dc_cury, dc->dc_curx);
   1339 }
   1340 
   1341 void
   1342 hpcfb_do_scroll(void *v)
   1343 {
   1344 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)v;
   1345 
   1346 	dc->dc_state |= HPCFB_DC_SCRTHREAD;
   1347 	if (dc->dc_state&(HPCFB_DC_DRAWING|HPCFB_DC_TDRAWING))
   1348 		dc->dc_state |= HPCFB_DC_SCRDELAY;
   1349 	else if (dc->dc_sc != NULL && dc->dc_sc->sc_thread)
   1350 		wakeup(dc->dc_sc);
   1351 	else if (dc->dc_sc != NULL && !dc->dc_sc->sc_mapping) {
   1352 		/* draw only EMUL mode */
   1353 		hpcfb_update(v);
   1354 	}
   1355 	dc->dc_state &= ~HPCFB_DC_SCRTHREAD;
   1356 }
   1357 
   1358 void
   1359 hpcfb_check_update(void *v)
   1360 {
   1361 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)v;
   1362 
   1363 	if (dc->dc_sc != NULL
   1364 	    && dc->dc_sc->sc_polling
   1365 	    && (dc->dc_state&HPCFB_DC_SCROLLPENDING)){
   1366 		callout_stop(&dc->dc_scroll_ch);
   1367 		dc->dc_state &= ~HPCFB_DC_SCRDELAY;
   1368 		hpcfb_update(v);
   1369 	}
   1370 	else if (dc->dc_state&HPCFB_DC_SCRDELAY){
   1371 		dc->dc_state &= ~HPCFB_DC_SCRDELAY;
   1372 		hpcfb_update(v);
   1373 	} else if (dc->dc_state&HPCFB_DC_UPDATEALL){
   1374 		dc->dc_state &= ~HPCFB_DC_UPDATEALL;
   1375 		hpcfb_update(v);
   1376 	}
   1377 }
   1378 #endif /* HPCFB_JUMP */
   1379 
   1380 void
   1381 hpcfb_copyrows(void *cookie, int src, int dst, int num)
   1382 {
   1383 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
   1384 	struct rasops_info *ri = &dc->dc_rinfo;
   1385 	struct hpcfb_softc *sc = dc->dc_sc;
   1386 	int srcyoff, dstyoff;
   1387 	int width, height;
   1388 
   1389 	hpcfb_tv_copyrows(cookie, src, dst, num);
   1390 
   1391 	if (!IS_DRAWABLE(dc)) {
   1392 		return;
   1393 	}
   1394 
   1395 	if (ri->ri_bits == NULL)
   1396 		return;
   1397 
   1398 	if (sc && sc->sc_accessops->bitblit
   1399 	    && (dc->dc_state&HPCFB_DC_CURRENT)) {
   1400 		dc->dc_state |= HPCFB_DC_DRAWING;
   1401 		srcyoff = src * ri->ri_font->fontheight;
   1402 		dstyoff = dst * ri->ri_font->fontheight;
   1403 		width = dc->dc_cols * ri->ri_font->fontwidth;
   1404 		height = num * ri->ri_font->fontheight;
   1405 		(*sc->sc_accessops->bitblit)(sc->sc_accessctx,
   1406 		    0, srcyoff, 0, dstyoff, height, width);
   1407 		dc->dc_state &= ~HPCFB_DC_DRAWING;
   1408 	}
   1409 	else {
   1410 #ifdef HPCFB_JUMP
   1411 		if (sc && sc->sc_polling) {
   1412 			hpcfb_check_update(dc);
   1413 		} else if ((dc->dc_state&HPCFB_DC_SCROLLPENDING) == 0) {
   1414 			dc->dc_state |= HPCFB_DC_SCROLLPENDING;
   1415 			dc->dc_scroll = 1;
   1416 			dc->dc_scroll_src = src;
   1417 			dc->dc_scroll_dst = dst;
   1418 			dc->dc_scroll_num = num;
   1419 			callout_reset(&dc->dc_scroll_ch, hz/100, &hpcfb_do_scroll, dc);
   1420 			return;
   1421 		} else if (dc->dc_scroll++ < dc->dc_rows/HPCFB_MAX_JUMP) {
   1422 			dc->dc_state |= HPCFB_DC_UPDATE;
   1423 			return;
   1424 		} else {
   1425 			dc->dc_state &= ~HPCFB_DC_SCROLLPENDING;
   1426 			callout_stop(&dc->dc_scroll_ch);
   1427 		}
   1428 		if (dc->dc_state&HPCFB_DC_UPDATE) {
   1429 			dc->dc_state &= ~HPCFB_DC_UPDATE;
   1430 			hpcfb_redraw(cookie, dc->dc_min_row,
   1431 			    dc->dc_max_row - dc->dc_min_row, 0);
   1432 			dc->dc_max_row = 0;
   1433 			dc->dc_min_row = dc->dc_rows;
   1434 			if (dc->dc_curx > 0 && dc->dc_cury > 0)
   1435 				hpcfb_cursor(dc, 1,  dc->dc_cury, dc->dc_curx);
   1436 			return;
   1437 		}
   1438 #endif /* HPCFB_JUMP */
   1439 		hpcfb_redraw(cookie, dst, num, 0);
   1440 	}
   1441 #ifdef HPCFB_JUMP
   1442 	hpcfb_check_update(dc);
   1443 #endif /* HPCFB_JUMP */
   1444 }
   1445 
   1446 /*
   1447  * eraserows
   1448  */
   1449 void
   1450 hpcfb_tv_eraserows(struct hpcfb_devconfig *dc, int row, int nrow, long attr)
   1451 {
   1452 	struct hpcfb_tvrow *vscn = dc->dc_tvram;
   1453 	int cols;
   1454 	int i;
   1455 
   1456 	if (vscn == 0)
   1457 		return;
   1458 
   1459 	dc->dc_state |= HPCFB_DC_TDRAWING;
   1460 	dc->dc_state &= ~HPCFB_DC_TDRAWING;
   1461 #ifdef HPCFB_JUMP
   1462 	if (row < dc->dc_min_row)
   1463 		dc->dc_min_row = row;
   1464 	if (row + nrow > dc->dc_max_row)
   1465 		dc->dc_max_row = row + nrow;
   1466 #endif /* HPCFB_JUMP */
   1467 
   1468 	for (i = 0; i < nrow; i++) {
   1469 		cols = vscn[row+i].maxcol;
   1470 		if (vscn[row+i].spacecol < cols)
   1471 			vscn[row+i].spacecol = cols;
   1472 		vscn[row+i].maxcol = -1;
   1473 	}
   1474 #ifdef HPCFB_JUMP
   1475 	hpcfb_check_update(dc);
   1476 #endif /* HPCFB_JUMP */
   1477 }
   1478 
   1479 void
   1480 hpcfb_eraserows(void *cookie, int row, int nrow, long attr)
   1481 {
   1482 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
   1483 	struct hpcfb_softc *sc = dc->dc_sc;
   1484 	struct rasops_info *ri = &dc->dc_rinfo;
   1485 	int yoff;
   1486 	int width;
   1487 	int height;
   1488 
   1489 	hpcfb_tv_eraserows(dc, row, nrow, attr);
   1490 #ifdef HPCFB_JUMP
   1491 	if (dc->dc_state&HPCFB_DC_SCROLLPENDING) {
   1492 		dc->dc_state |= HPCFB_DC_UPDATE;
   1493 		return;
   1494 	}
   1495 #endif /* HPCFB_JUMP */
   1496 	if (!IS_DRAWABLE(dc)) {
   1497 		return;
   1498 	}
   1499 
   1500 	if (ri->ri_bits == NULL)
   1501 		return;
   1502 
   1503 	dc->dc_state |= HPCFB_DC_DRAWING;
   1504 	if (sc && sc->sc_accessops->erase
   1505 	    && (dc->dc_state&HPCFB_DC_CURRENT)) {
   1506 		yoff = row * ri->ri_font->fontheight;
   1507 		width = dc->dc_cols * ri->ri_font->fontwidth;
   1508 		height = nrow * ri->ri_font->fontheight;
   1509 		(*sc->sc_accessops->erase)(sc->sc_accessctx,
   1510 		    0, yoff, height, width, attr);
   1511 	} else
   1512 		rasops_emul.eraserows(ri, row, nrow, attr);
   1513 	dc->dc_state &= ~HPCFB_DC_DRAWING;
   1514 #ifdef HPCFB_JUMP
   1515 	hpcfb_check_update(dc);
   1516 #endif /* HPCFB_JUMP */
   1517 }
   1518 
   1519 /*
   1520  * allocattr
   1521  */
   1522 int
   1523 hpcfb_allocattr(void *cookie, int fg, int bg, int flags, long *attrp)
   1524 {
   1525 	struct hpcfb_devconfig *dc = (struct hpcfb_devconfig *)cookie;
   1526 	struct rasops_info *ri = &dc->dc_rinfo;
   1527 
   1528 	return (rasops_emul.allocattr(ri, fg, bg, flags, attrp));
   1529 }
   1530