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pvr.c revision 1.27
      1 /*	$NetBSD: pvr.c,v 1.27 2010/05/15 08:53:27 tsutsui Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2001 Marcus Comstedt.
      5  * Copyright (c) 2001 Jason R. Thorpe.
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *	This product includes software developed by Marcus Comstedt.
     19  * 4. Neither the name of The NetBSD Foundation nor the names of its
     20  *    contributors may be used to endorse or promote products derived
     21  *    from this software without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     24  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     25  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     26  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     27  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     28  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     29  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     30  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     31  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     32  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     33  * POSSIBILITY OF SUCH DAMAGE.
     34  */
     35 
     36 #include <sys/cdefs.h>			/* RCS ID & Copyright macro defns */
     37 
     38 __KERNEL_RCSID(0, "$NetBSD: pvr.c,v 1.27 2010/05/15 08:53:27 tsutsui Exp $");
     39 
     40 #include <sys/param.h>
     41 #include <sys/systm.h>
     42 #include <sys/kernel.h>
     43 #include <sys/device.h>
     44 #include <sys/malloc.h>
     45 #include <sys/buf.h>
     46 #include <sys/ioctl.h>
     47 
     48 #include <machine/vmparam.h>
     49 #include <machine/cpu.h>
     50 #include <machine/bus.h>
     51 
     52 #include <dev/cons.h>
     53 
     54 #include <dev/wscons/wsconsio.h>
     55 #include <dev/wscons/wsdisplayvar.h>
     56 
     57 #include <dev/wscons/wscons_callbacks.h>
     58 
     59 #include <dev/rasops/rasops.h>
     60 #include <dev/wsfont/wsfont.h>
     61 
     62 #include <dreamcast/dev/pvrvar.h>
     63 #include <dreamcast/dev/maple/mkbdvar.h>
     64 
     65 #include "mkbd.h"
     66 
     67 #define	PVRREG_FBSTART		0x05000000
     68 #define	PVRREG_REGSTART		0x005f8000
     69 
     70 #define	PVRREG_BRDCOLR		0x40
     71 #define	BRDCOLR_BLUE(x)		((x) << 0)
     72 #define	BRDCOLR_GREEN(x)	((x) << 8)
     73 #define	BRDCOLR_RED(x)		((x) << 16)
     74 
     75 #define	PVRREG_DIWMODE		0x44
     76 #define	DIWMODE_DE		(1U << 0)	/* display enable */
     77 #define	DIWMODE_SD		(1U << 1)	/* scan double enable */
     78 #define	DIWMODE_COL(x)		((x) << 2)
     79 #define	DIWMODE_COL_RGB555	DIWMODE_COL(0)	/* RGB555, 16-bit */
     80 #define	DIWMODE_COL_RGB565	DIWMODE_COL(1)	/* RGB565, 16-bit */
     81 #define	DIWMODE_COL_RGB888	DIWMODE_COL(2)	/* RGB888, 24-bit */
     82 #define	DIWMODE_COL_ARGB888	DIWMODE_COL(3)	/* RGB888, 32-bit */
     83 #define	DIWMODE_C		(1U << 23)	/* 2x clock enable (VGA) */
     84 
     85 #define	PVRREG_DIWADDRL		0x50
     86 
     87 #define	PVRREG_DIWADDRS		0x54
     88 
     89 #define	PVRREG_DIWSIZE		0x5c
     90 #define	DIWSIZE_DPL(x)		((x) << 0)	/* pixel data per line */
     91 #define	DIWSIZE_LPF(x)		((x) << 10)	/* lines per field */
     92 #define	DIWSIZE_MODULO(x)	((x) << 20)	/* words to skip + 1 */
     93 
     94 #define	PVRREG_RASEVTPOS	0xcc
     95 #define	RASEVTPOS_BOTTOM(x)	((x) << 0)
     96 #define	RASEVTPOS_TOP(x)	((x) << 16)
     97 
     98 #define	PVRREG_SYNCCONF		0xd0
     99 #define	SYNCCONF_VP		(1U << 0)	/* V-sync polarity */
    100 #define	SYNCCONF_HP		(1U << 1)	/* H-sync polarity */
    101 #define	SYNCCONF_I		(1U << 4)	/* interlace */
    102 #define	SYNCCONF_BC(x)		(1U << 6)	/* broadcast standard */
    103 #define	SYNCCONF_VO		(1U << 8)	/* video output enable */
    104 
    105 #define	PVRREG_BRDHORZ		0xd4
    106 #define	BRDHORZ_STOP(x)		((x) << 0)
    107 #define	BRDHORZ_START(x)	((x) << 16)
    108 
    109 #define	PVRREG_SYNCSIZE		0xd8
    110 #define	SYNCSIZE_H(x)		((x) << 0)
    111 #define	SYNCSIZE_V(x)		((x) << 16)
    112 
    113 #define	PVRREG_BRDVERT		0xdc
    114 #define	BRDVERT_STOP(x)		((x) << 0)
    115 #define	BRDVERT_START(x)	((x) << 16)
    116 
    117 #define	PVRREG_DIWCONF		0xe8
    118 #define	DIWCONF_LR		(1U << 8)	/* low-res */
    119 #define	DIWCONF_MAGIC		(22 << 16)
    120 
    121 #define	PVRREG_DIWHSTRT		0xec
    122 
    123 #define	PVRREG_DIWVSTRT		0xf0
    124 #define	DIWVSTRT_V1(x)		((x) << 0)
    125 #define	DIWVSTRT_V2(x)		((x) << 16)
    126 
    127 #define	PVR_REG_READ(dc, reg)						\
    128 	((volatile uint32_t *)(dc)->dc_regvaddr)[(reg) >> 2]
    129 #define	PVR_REG_WRITE(dc, reg, val)					\
    130 	((volatile uint32_t *)(dc)->dc_regvaddr)[(reg) >> 2] = (val)
    131 
    132 struct fb_devconfig {
    133 	vaddr_t dc_vaddr;		/* framebuffer virtual address */
    134 	vaddr_t dc_paddr;		/* framebuffer physical address */
    135 	vaddr_t dc_regvaddr;		/* registers virtual address */
    136 	vaddr_t dc_regpaddr;		/* registers physical address */
    137 	int	dc_wid;			/* width of frame buffer */
    138 	int	dc_ht;			/* height of frame buffer */
    139 	int	dc_depth;		/* depth, bits per pixel */
    140 	int	dc_rowbytes;		/* bytes in a FB scan line */
    141 	vaddr_t	dc_videobase;		/* base of flat frame buffer */
    142 	int	dc_blanked;		/* currently has video disabled */
    143 	int	dc_dispflags;		/* display flags */
    144 	int	dc_tvsystem;		/* TV broadcast system */
    145 
    146 	struct rasops_info rinfo;
    147 };
    148 
    149 #define	PVR_RGBMODE	0x01		/* RGB or composite */
    150 #define	PVR_VGAMODE	0x02		/* VGA */
    151 
    152 struct pvr_softc {
    153 	struct device sc_dev;
    154 	struct fb_devconfig *sc_dc;	/* device configuration */
    155 	int nscreens;
    156 };
    157 
    158 int	pvr_match(struct device *, struct cfdata *, void *);
    159 void	pvr_attach(struct device *, struct device *, void *);
    160 
    161 CFATTACH_DECL(pvr, sizeof(struct pvr_softc),
    162     pvr_match, pvr_attach, NULL, NULL);
    163 
    164 void	pvr_getdevconfig(struct fb_devconfig *);
    165 
    166 struct fb_devconfig pvr_console_dc;
    167 
    168 char pvr_stdscreen_textgeom[32] = { "std" };	/* XXX yuck */
    169 
    170 struct wsscreen_descr pvr_stdscreen = {
    171 	pvr_stdscreen_textgeom, 0, 0,
    172 	0, /* textops */
    173 	0, 0,
    174 	WSSCREEN_WSCOLORS,
    175 };
    176 
    177 const struct wsscreen_descr *_pvr_scrlist[] = {
    178 	&pvr_stdscreen,
    179 };
    180 
    181 const struct wsscreen_list pvr_screenlist = {
    182 	sizeof(_pvr_scrlist) / sizeof(struct wsscreen_descr *), _pvr_scrlist
    183 };
    184 
    185 int	pvrioctl(void *, void *, u_long, void *, int, struct lwp *);
    186 paddr_t	pvrmmap(void *, void *, off_t, int);
    187 
    188 int	pvr_alloc_screen(void *, const struct wsscreen_descr *,
    189 	    void **, int *, int *, long *);
    190 void	pvr_free_screen(void *, void *);
    191 int	pvr_show_screen(void *, void *, int,
    192 	    void (*)(void *, int, int), void *);
    193 
    194 const struct wsdisplay_accessops pvr_accessops = {
    195 	pvrioctl,
    196 	pvrmmap,
    197 	pvr_alloc_screen,
    198 	pvr_free_screen,
    199 	pvr_show_screen,
    200 	NULL, /* load_font */
    201 };
    202 
    203 void	pvrinit(struct fb_devconfig *);
    204 
    205 int	pvr_is_console;
    206 
    207 int
    208 pvr_match(struct device *parent, struct cfdata *match, void *aux)
    209 {
    210 
    211 	return 1;
    212 }
    213 
    214 void
    215 pvr_getdevconfig(struct fb_devconfig *dc)
    216 {
    217 	int i, cookie;
    218 
    219 	dc->dc_paddr = PVRREG_FBSTART;
    220 	dc->dc_vaddr = SH3_PHYS_TO_P2SEG(dc->dc_paddr);
    221 
    222 	dc->dc_regpaddr = PVRREG_REGSTART;
    223 	dc->dc_regvaddr = SH3_PHYS_TO_P2SEG(dc->dc_regpaddr);
    224 
    225 	dc->dc_wid = 640;
    226 	dc->dc_ht = 480;
    227 	dc->dc_depth = 16;
    228 	dc->dc_rowbytes = dc->dc_wid * (dc->dc_depth / 8);
    229 	dc->dc_videobase = dc->dc_vaddr;
    230 	dc->dc_blanked = 0;
    231 	dc->dc_dispflags = 0;
    232 
    233 	/* Clear the screen. */
    234 	for (i = 0; i < dc->dc_ht * dc->dc_rowbytes; i += sizeof(uint32_t))
    235 		*(uint32_t *)(dc->dc_videobase + i) = 0x0;
    236 
    237 	/* Initialize the device. */
    238 	pvrinit(dc);
    239 
    240 	dc->rinfo.ri_flg = 0;
    241 	if (dc == &pvr_console_dc)
    242 		dc->rinfo.ri_flg |= RI_NO_AUTO;
    243 	dc->rinfo.ri_depth = dc->dc_depth;
    244 	dc->rinfo.ri_bits = (void *) dc->dc_videobase;
    245 	dc->rinfo.ri_width = dc->dc_wid;
    246 	dc->rinfo.ri_height = dc->dc_ht;
    247 	dc->rinfo.ri_stride = dc->dc_rowbytes;
    248 
    249 	wsfont_init();
    250 	/* prefer 8 pixel wide font */
    251 	cookie = wsfont_find(NULL, 8, 0, 0, WSDISPLAY_FONTORDER_L2R,
    252 	    WSDISPLAY_FONTORDER_L2R);
    253 	if (cookie <= 0)
    254 		cookie = wsfont_find(NULL, 0, 0, 0, WSDISPLAY_FONTORDER_L2R,
    255 		    WSDISPLAY_FONTORDER_L2R);
    256 	if (cookie <= 0) {
    257 		printf("pvr: font table is empty\n");
    258 		return;
    259 	}
    260 
    261 	if (wsfont_lock(cookie, &dc->rinfo.ri_font)) {
    262 		printf("pvr: unable to lock font\n");
    263 		return;
    264 	}
    265 	dc->rinfo.ri_wsfcookie = cookie;
    266 
    267 	rasops_init(&dc->rinfo, 500, 500);
    268 
    269 	/* XXX shouldn't be global */
    270 	pvr_stdscreen.nrows = dc->rinfo.ri_rows;
    271 	pvr_stdscreen.ncols = dc->rinfo.ri_cols;
    272 	pvr_stdscreen.textops = &dc->rinfo.ri_ops;
    273 	pvr_stdscreen.capabilities = dc->rinfo.ri_caps;
    274 
    275 	/* XXX yuck */
    276 	sprintf(pvr_stdscreen_textgeom, "%dx%d", pvr_stdscreen.ncols,
    277 	    pvr_stdscreen.nrows);
    278 }
    279 
    280 void
    281 pvr_attach(struct device *parent, struct device *self, void *aux)
    282 {
    283 	struct pvr_softc *sc = (void *) self;
    284 	struct wsemuldisplaydev_attach_args waa;
    285 	int console;
    286 	static const char *tvsystem_name[4] =
    287 		{ "NTSC", "PAL", "PAL-M", "PAL-N" };
    288 
    289 	console = pvr_is_console;
    290 	if (console) {
    291 		sc->sc_dc = &pvr_console_dc;
    292 		sc->sc_dc->rinfo.ri_flg &= ~RI_NO_AUTO;
    293 		sc->nscreens = 1;
    294 	} else {
    295 		sc->sc_dc = malloc(sizeof(struct fb_devconfig), M_DEVBUF,
    296 		    M_WAITOK);
    297 		pvr_getdevconfig(sc->sc_dc);
    298 	}
    299 	printf(": %d x %d, %dbpp, %s, %s\n", sc->sc_dc->dc_wid,
    300 	    sc->sc_dc->dc_ht, sc->sc_dc->dc_depth,
    301 	    (sc->sc_dc->dc_dispflags & PVR_VGAMODE) ? "VGA" :
    302 	       tvsystem_name[sc->sc_dc->dc_tvsystem],
    303 	    (sc->sc_dc->dc_dispflags & PVR_RGBMODE) ? "RGB" : "composite");
    304 
    305 	/* XXX Colormap initialization? */
    306 
    307 	waa.console = console;
    308 	waa.scrdata = &pvr_screenlist;
    309 	waa.accessops = &pvr_accessops;
    310 	waa.accesscookie = sc;
    311 
    312 	(void) config_found(self, &waa, wsemuldisplaydevprint);
    313 }
    314 
    315 int
    316 pvrioctl(void *v, void *vs, u_long cmd, void *data, int flag, struct lwp *l)
    317 {
    318 	struct pvr_softc *sc = v;
    319 	struct fb_devconfig *dc = sc->sc_dc;
    320 
    321 	switch (cmd) {
    322 	case WSDISPLAYIO_GTYPE:
    323 		*(u_int *)data = WSDISPLAY_TYPE_DCPVR;
    324 		return 0;
    325 
    326 	case WSDISPLAYIO_GINFO:
    327 #define	wsd_fbip ((struct wsdisplay_fbinfo *)data)
    328 		wsd_fbip->height = sc->sc_dc->dc_ht;
    329 		wsd_fbip->width = sc->sc_dc->dc_wid;
    330 		wsd_fbip->depth = sc->sc_dc->dc_depth;
    331 		wsd_fbip->cmsize = 0;	/* XXX Colormap */
    332 #undef wsd_fbip
    333 		return 0;
    334 
    335 	case WSDISPLAYIO_GETCMAP:
    336 	case WSDISPLAYIO_PUTCMAP:
    337 		return EPASSTHROUGH;	/* XXX Colormap */
    338 
    339 	case WSDISPLAYIO_SVIDEO:
    340 		switch (*(u_int *)data) {
    341 		case WSDISPLAYIO_VIDEO_OFF:
    342 			if (!dc->dc_blanked) {
    343 				dc->dc_blanked = 1;
    344 				PVR_REG_WRITE(dc, PVRREG_DIWMODE,
    345 				    PVR_REG_READ(dc, PVRREG_DIWMODE) &
    346 				    ~DIWMODE_DE);
    347 			}
    348 			break;
    349 		case WSDISPLAYIO_VIDEO_ON:
    350 			if (dc->dc_blanked) {
    351 				dc->dc_blanked = 0;
    352 				PVR_REG_WRITE(dc, PVRREG_DIWMODE,
    353 				    PVR_REG_READ(dc, PVRREG_DIWMODE) |
    354 				    DIWMODE_DE);
    355 			}
    356 			break;
    357 		default:
    358 			return EPASSTHROUGH;	/* XXX */
    359 		}
    360 		return 0;
    361 
    362 	case WSDISPLAYIO_GVIDEO:
    363 		*(u_int *)data = dc->dc_blanked ?
    364 		    WSDISPLAYIO_VIDEO_OFF : WSDISPLAYIO_VIDEO_ON;
    365 		return 0;
    366 
    367 	case WSDISPLAYIO_GCURPOS:
    368 	case WSDISPLAYIO_SCURPOS:
    369 	case WSDISPLAYIO_GCURMAX:
    370 	case WSDISPLAYIO_GCURSOR:
    371 	case WSDISPLAYIO_SCURSOR:
    372 		return EPASSTHROUGH;	/* XXX */
    373 	}
    374 
    375 	return EPASSTHROUGH;
    376 }
    377 
    378 paddr_t
    379 pvrmmap(void *v, void *vs, off_t offset, int prot)
    380 {
    381 
    382 	/*
    383 	 * XXX This should be easy to support -- just need to define
    384 	 * XXX offsets for the contol regs, etc.
    385 	 */
    386 
    387 	struct pvr_softc *sc = v;
    388 	struct fb_devconfig *dc = sc->sc_dc;
    389 	paddr_t addr;
    390 
    391 	if (offset >= 0 &&
    392 	    offset < sh3_round_page(dc->dc_rowbytes * dc->dc_ht))
    393 		addr = sh3_btop(dc->dc_paddr + offset);
    394 	else
    395 		addr = (-1);	/* XXX bogus */
    396 
    397 	return addr;
    398 }
    399 
    400 int
    401 pvr_alloc_screen(void *v, const struct wsscreen_descr *type,
    402     void **cookiep, int *curxp, int *curyp, long *attrp)
    403 {
    404 	struct pvr_softc *sc = v;
    405 	long defattr;
    406 
    407 	if (sc->nscreens > 0)
    408 		return ENOMEM;
    409 
    410 	*cookiep = &sc->sc_dc->rinfo; /* one and only for now */
    411 	*curxp = 0;
    412 	*curyp = 0;
    413 	(*sc->sc_dc->rinfo.ri_ops.allocattr)(&sc->sc_dc->rinfo, 0, 0, 0,
    414 	    &defattr);
    415 	*attrp = defattr;
    416 	sc->nscreens++;
    417 	return 0;
    418 }
    419 
    420 void
    421 pvr_free_screen(void *v, void *cookie)
    422 {
    423 	struct pvr_softc *sc = v;
    424 
    425 	if (sc->sc_dc == &pvr_console_dc)
    426 		panic("pvr_free_screen: console");
    427 
    428 	sc->nscreens--;
    429 }
    430 
    431 int
    432 pvr_show_screen(void *v, void *cookie, int waitok,
    433     void (*cb)(void *, int, int), void *cbarg)
    434 {
    435 
    436 	return 0;
    437 }
    438 
    439 static void
    440 pvr_check_cable(struct fb_devconfig *dc)
    441 {
    442 	volatile uint32_t *porta =
    443 	    (volatile uint32_t *)0xff80002c;
    444 	uint16_t v;
    445 
    446 	/* PORT8 and PORT9 is input */
    447 	*porta = (*porta & ~0xf0000) | 0xa0000;
    448 
    449 	/* Read PORT8 and PORT9 */
    450 	v = ((*(volatile uint16_t *)(porta + 1)) >> 8) & 3;
    451 
    452 	if ((v & 2) == 0)
    453 		dc->dc_dispflags |= PVR_VGAMODE|PVR_RGBMODE;
    454 	else if ((v & 1) == 0)
    455 		dc->dc_dispflags |= PVR_RGBMODE;
    456 }
    457 
    458 static void
    459 pvr_check_tvsys(struct fb_devconfig *dc)
    460 {
    461 
    462 	/* XXX should use flashmem device when one exists */
    463 	dc->dc_tvsystem = (*(volatile uint8_t *)0xa021a004) & 3;
    464 }
    465 
    466 void
    467 pvrinit(struct fb_devconfig *dc)
    468 {
    469 	int display_lines_per_field;
    470 	int v_absolute_size;
    471 	int h_absolute_size;
    472 	int vborder_start, vborder_stop;
    473 	int hborder_start, hborder_stop;
    474 	int modulo = 1, voffset, hoffset;
    475 
    476 	pvr_check_cable(dc);
    477 	pvr_check_tvsys(dc);
    478 
    479 	PVR_REG_WRITE(dc, 8, 0);		/* reset */
    480 	PVR_REG_WRITE(dc, PVRREG_BRDCOLR, 0);	/* black border */
    481 
    482 	if (dc->dc_dispflags & PVR_VGAMODE) {
    483 		v_absolute_size = 524;
    484 		h_absolute_size = 857;
    485 
    486 		display_lines_per_field = 480;
    487 		hoffset = 164;
    488 		voffset = 36;
    489 
    490 		hborder_start = 126;
    491 		hborder_stop = 837;
    492 
    493 		vborder_start = 40;
    494 		vborder_stop = 444;		/* XXX */
    495 
    496 		/* 31kHz, RGB565 */
    497 		PVR_REG_WRITE(dc, PVRREG_DIWMODE,
    498 		    DIWMODE_C | DIWMODE_COL_RGB565);
    499 
    500 		/* video output */
    501 		PVR_REG_WRITE(dc, PVRREG_SYNCCONF, SYNCCONF_VO);
    502 	} else {
    503 		if (dc->dc_tvsystem & 1) {
    504 			/* 50 Hz PAL */
    505 			v_absolute_size = 624;
    506 			h_absolute_size = 863;
    507 
    508 			display_lines_per_field = 240;
    509 			hoffset = 174;
    510 			voffset = 18;
    511 
    512 			hborder_start = 116;
    513 			hborder_stop = 843;
    514 
    515 			vborder_start = 44;
    516 			vborder_stop = 536;	/* XXX */
    517 		} else {
    518 			/* 60 Hz NTSC */
    519 			v_absolute_size = 524;
    520 			h_absolute_size = 857;
    521 
    522 			display_lines_per_field = 240;
    523 			hoffset = 170;
    524 			voffset = 28;
    525 
    526 			hborder_start = 126;
    527 			hborder_stop = 837;
    528 
    529 			vborder_start = 18;
    530 			vborder_stop = 506;	/* XXX */
    531 		}
    532 
    533 		modulo += 640 * 2 / 4;	/* interlace -> skip every other line */
    534 
    535 		/* 15kHz, RGB565 */
    536 		PVR_REG_WRITE(dc, PVRREG_DIWMODE,
    537 		    DIWMODE_COL_RGB565);
    538 
    539 		/* video output, PAL/NTSC, interlace */
    540 		PVR_REG_WRITE(dc, PVRREG_SYNCCONF,
    541 		    SYNCCONF_VO | SYNCCONF_I | SYNCCONF_BC(dc->dc_tvsystem));
    542 	}
    543 
    544 	/* video base address, long field */
    545 	PVR_REG_WRITE(dc, PVRREG_DIWADDRL, 0);
    546 
    547 	/* video base address, short field */
    548 	PVR_REG_WRITE(dc, PVRREG_DIWADDRS, 640 * 2);
    549 
    550 	/* video size */
    551 	PVR_REG_WRITE(dc, PVRREG_DIWSIZE, DIWSIZE_MODULO(modulo) |
    552 	    DIWSIZE_LPF(display_lines_per_field - 1) |
    553 	    DIWSIZE_DPL(640 * 2 / 4 - 1));
    554 
    555 	PVR_REG_WRITE(dc, PVRREG_DIWVSTRT,		/* V start */
    556 	    DIWVSTRT_V1(voffset) | DIWVSTRT_V2(voffset));
    557 	PVR_REG_WRITE(dc, PVRREG_BRDVERT,		/* V border */
    558 	    BRDVERT_START(vborder_start) | BRDVERT_STOP(vborder_stop));
    559 	PVR_REG_WRITE(dc, PVRREG_DIWHSTRT, hoffset);	/* H start */
    560 	PVR_REG_WRITE(dc, PVRREG_SYNCSIZE,		/* HV counter */
    561 	    SYNCSIZE_V(v_absolute_size) | SYNCSIZE_H(h_absolute_size));
    562 	PVR_REG_WRITE(dc, PVRREG_BRDHORZ,		/* H border */
    563 	    BRDHORZ_START(hborder_start) | BRDHORZ_STOP(hborder_stop));
    564 	PVR_REG_WRITE(dc, PVRREG_DIWCONF, DIWCONF_MAGIC);
    565 
    566 	/* RGB / composite */
    567 	*(volatile uint32_t *)
    568 	    SH3_PHYS_TO_P2SEG(0x00702c00) =
    569 	    ((dc->dc_dispflags & PVR_RGBMODE) ? 0 : 3) << 8;
    570 
    571 	/* display on */
    572 	PVR_REG_WRITE(dc, PVRREG_DIWMODE,
    573 	    PVR_REG_READ(dc, PVRREG_DIWMODE) | DIWMODE_DE);
    574 }
    575 
    576 /* Console support. */
    577 
    578 void	pvrcnprobe(struct consdev *);
    579 void	pvrcninit(struct consdev *);
    580 
    581 void
    582 pvrcninit(struct consdev *cndev)
    583 {
    584 	struct fb_devconfig *dcp = &pvr_console_dc;
    585 	long defattr;
    586 
    587 	pvr_getdevconfig(dcp);
    588 	(*dcp->rinfo.ri_ops.allocattr)(&dcp->rinfo, 0, 0, 0, &defattr);
    589 	wsdisplay_cnattach(&pvr_stdscreen, &dcp->rinfo, 0, 0, defattr);
    590 
    591 	pvr_is_console = 1;
    592 
    593 	cn_tab->cn_pri = CN_INTERNAL;
    594 
    595 #if NMKBD > 0
    596 	mkbd_cnattach();	/* connect keyboard and screen together */
    597 #endif
    598 }
    599 
    600 void
    601 pvrcnprobe(struct consdev *cndev)
    602 {
    603 #if NWSDISPLAY > 0
    604 	int maj, unit;
    605 	extern const struct cdevsw wsdisplay_cdevsw;
    606 #endif
    607 	cndev->cn_dev = NODEV;
    608 	cndev->cn_pri = CN_NORMAL;
    609 
    610 #if NWSDISPLAY > 0
    611 	unit = 0;
    612 	maj = cdevsw_lookup_major(&wsdisplay_cdevsw);
    613 	if (maj != -1) {
    614 		cndev->cn_pri = CN_INTERNAL;
    615 		cndev->cn_dev = makedev(maj, unit);
    616 	}
    617 #endif
    618 }
    619