bwtwo.c revision 1.12 
1/*	$OpenBSD: bwtwo.c,v 1.12 2005/01/05 23:04:25 miod Exp $	*/
2
3/*
4 * Copyright (c) 2002 Jason L. Wright (jason@thought.net)
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
24 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
25 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Effort sponsored in part by the Defense Advanced Research Projects
29 * Agency (DARPA) and Air Force Research Laboratory, Air Force
30 * Materiel Command, USAF, under agreement number F30602-01-2-0537.
31 *
32 */
33
34#include <sys/param.h>
35#include <sys/systm.h>
36#include <sys/kernel.h>
37#include <sys/errno.h>
38#include <sys/device.h>
39#include <sys/ioctl.h>
40#include <sys/malloc.h>
41
42#include <machine/bus.h>
43#include <machine/intr.h>
44#include <machine/autoconf.h>
45#include <machine/openfirm.h>
46
47#include <dev/sbus/sbusvar.h>
48#include <dev/wscons/wsconsio.h>
49#include <dev/wscons/wsdisplayvar.h>
50#include <dev/wscons/wscons_raster.h>
51#include <dev/rasops/rasops.h>
52#include <machine/fbvar.h>
53
54#define	BWTWO_CTRL_OFFSET	0x400000
55#define	BWTWO_CTRL_SIZE	(sizeof(u_int32_t) * 8)
56#define	BWTWO_VID_OFFSET	0x800000
57#define	BWTWO_VID_SIZE	(1024 * 1024)
58
59#define	FBC_CTRL	0x10		/* control */
60#define	FBC_STAT	0x11		/* status */
61#define	FBC_START	0x12		/* cursor start */
62#define	FBC_END		0x13		/* cursor end */
63#define	FBC_VCTRL	0x14		/* 12 bytes of timing goo */
64
65#define	FBC_CTRL_IENAB		0x80	/* interrupt enable */
66#define	FBC_CTRL_VENAB		0x40	/* video enable */
67#define	FBC_CTRL_TIME		0x20	/* timing enable */
68#define	FBC_CTRL_CURS		0x10	/* cursor compare enable */
69#define	FBC_CTRL_XTAL		0x0c	/* xtal select (0,1,2,test): */
70#define	FBC_CTRL_XTAL_0		0x00	/*  0 */
71#define	FBC_CTRL_XTAL_1		0x04	/*  0 */
72#define	FBC_CTRL_XTAL_2		0x08	/*  0 */
73#define	FBC_CTRL_XTAL_TEST	0x0c	/*  0 */
74#define	FBC_CTRL_DIV		0x03	/* divisor (1,2,3,4): */
75#define	FBC_CTRL_DIV_1		0x00	/*  / 1 */
76#define	FBC_CTRL_DIV_2		0x01	/*  / 2 */
77#define	FBC_CTRL_DIV_3		0x02	/*  / 3 */
78#define	FBC_CTRL_DIV_4		0x03	/*  / 4 */
79
80#define	FBC_STAT_INTR		0x80	/* interrupt pending */
81#define	FBC_STAT_RES		0x70	/* monitor sense: */
82#define	FBC_STAT_RES_1024	0x10	/*  1024x768 */
83#define	FBC_STAT_RES_1280	0x40	/*  1280x1024 */
84#define	FBC_STAT_RES_1152	0x30	/*  1152x900 */
85#define	FBC_STAT_RES_1152A	0x40	/*  1152x900x76, A */
86#define	FBC_STAT_RES_1600	0x50	/*  1600x1200 */
87#define	FBC_STAT_RES_1152B	0x60	/*  1152x900x86, B */
88#define	FBC_STAT_ID		0x0f	/* id mask: */
89#define	FBC_STAT_ID_COLOR	0x01	/*  color */
90#define	FBC_STAT_ID_MONO	0x02	/*  monochrome */
91#define	FBC_STAT_ID_MONOECL	0x03	/*  monochrome, ecl */
92
93#define	FBC_READ(sc, reg) \
94    bus_space_read_1((sc)->sc_bustag, (sc)->sc_ctrl_regs, (reg))
95#define	FBC_WRITE(sc, reg, val) \
96    bus_space_write_1((sc)->sc_bustag, (sc)->sc_ctrl_regs, (reg), (val))
97
98struct bwtwo_softc {
99	struct sunfb sc_sunfb;
100	struct sbusdev sc_sd;
101	bus_space_tag_t sc_bustag;
102	bus_addr_t sc_paddr;
103	bus_space_handle_t sc_ctrl_regs;
104	bus_space_handle_t sc_vid_regs;
105	int sc_nscreens;
106};
107
108int bwtwo_ioctl(void *, u_long, caddr_t, int, struct proc *);
109int bwtwo_alloc_screen(void *, const struct wsscreen_descr *, void **,
110    int *, int *, long *);
111void bwtwo_free_screen(void *, void *);
112int bwtwo_show_screen(void *, void *, int, void (*cb)(void *, int, int),
113    void *);
114paddr_t bwtwo_mmap(void *, off_t, int);
115int bwtwo_is_console(int);
116void bwtwo_burner(void *, u_int, u_int);
117void bwtwo_updatecursor(struct rasops_info *);
118
119struct wsdisplay_accessops bwtwo_accessops = {
120	bwtwo_ioctl,
121	bwtwo_mmap,
122	bwtwo_alloc_screen,
123	bwtwo_free_screen,
124	bwtwo_show_screen,
125	NULL,	/* load_font */
126	NULL,	/* scrollback */
127	NULL,	/* getchar */
128	bwtwo_burner,
129};
130
131int	bwtwomatch(struct device *, void *, void *);
132void	bwtwoattach(struct device *, struct device *, void *);
133
134struct cfattach bwtwo_ca = {
135	sizeof (struct bwtwo_softc), bwtwomatch, bwtwoattach
136};
137
138struct cfdriver bwtwo_cd = {
139	NULL, "bwtwo", DV_DULL
140};
141
142int
143bwtwomatch(parent, vcf, aux)
144	struct device *parent;
145	void *vcf, *aux;
146{
147	struct cfdata *cf = vcf;
148	struct sbus_attach_args *sa = aux;
149
150	return (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0);
151}
152
153void
154bwtwoattach(parent, self, aux)
155	struct device *parent, *self;
156	void *aux;
157{
158	struct bwtwo_softc *sc = (struct bwtwo_softc *)self;
159	struct sbus_attach_args *sa = aux;
160	int console;
161
162	sc->sc_bustag = sa->sa_bustag;
163	sc->sc_paddr = sbus_bus_addr(sa->sa_bustag, sa->sa_slot, sa->sa_offset);
164
165	fb_setsize(&sc->sc_sunfb, 1, 1152, 900, sa->sa_node, 0);
166
167	if (sa->sa_nreg != 1) {
168		printf(": expected %d registers, got %d\n", 1, sa->sa_nreg);
169		goto fail;
170	}
171
172	/*
173	 * Map just CTRL and video RAM.
174	 */
175	if (sbus_bus_map(sa->sa_bustag, sa->sa_reg[0].sbr_slot,
176	    sa->sa_reg[0].sbr_offset + BWTWO_CTRL_OFFSET,
177	    BWTWO_CTRL_SIZE, 0, 0, &sc->sc_ctrl_regs) != 0) {
178		printf(": cannot map ctrl registers\n");
179		goto fail_ctrl;
180	}
181
182	if (sbus_bus_map(sa->sa_bustag, sa->sa_reg[0].sbr_slot,
183	    sa->sa_reg[0].sbr_offset + BWTWO_VID_OFFSET,
184	    sc->sc_sunfb.sf_fbsize, BUS_SPACE_MAP_LINEAR,
185	    0, &sc->sc_vid_regs) != 0) {
186		printf(": cannot map vid registers\n");
187		goto fail_vid;
188	}
189
190	console = bwtwo_is_console(sa->sa_node);
191
192	sbus_establish(&sc->sc_sd, &sc->sc_sunfb.sf_dev);
193
194	bwtwo_burner(sc, 1, 0);
195
196	printf("\n");
197
198	sc->sc_sunfb.sf_ro.ri_bits = (void *)bus_space_vaddr(sc->sc_bustag,
199	    sc->sc_vid_regs);
200	sc->sc_sunfb.sf_ro.ri_hw = sc;
201	fbwscons_init(&sc->sc_sunfb, console ? 0 : RI_CLEAR);
202
203	if (console) {
204		sc->sc_sunfb.sf_ro.ri_updatecursor = bwtwo_updatecursor;
205		fbwscons_console_init(&sc->sc_sunfb, -1, bwtwo_burner);
206	}
207
208	fbwscons_attach(&sc->sc_sunfb, &bwtwo_accessops, console);
209
210	return;
211
212fail_vid:
213	bus_space_unmap(sa->sa_bustag, sc->sc_ctrl_regs, BWTWO_CTRL_SIZE);
214fail_ctrl:
215fail:
216;
217}
218
219int
220bwtwo_ioctl(v, cmd, data, flags, p)
221	void *v;
222	u_long cmd;
223	caddr_t data;
224	int flags;
225	struct proc *p;
226{
227	struct bwtwo_softc *sc = v;
228	struct wsdisplay_fbinfo *wdf;
229
230	switch (cmd) {
231	case WSDISPLAYIO_GTYPE:
232		*(u_int *)data = WSDISPLAY_TYPE_SUNBW;
233		break;
234	case WSDISPLAYIO_GINFO:
235		wdf = (void *)data;
236		wdf->height = sc->sc_sunfb.sf_height;
237		wdf->width  = sc->sc_sunfb.sf_width;
238		wdf->depth  = sc->sc_sunfb.sf_depth;
239		wdf->cmsize = 0;
240		break;
241	case WSDISPLAYIO_LINEBYTES:
242		*(u_int *)data = sc->sc_sunfb.sf_linebytes;
243		break;
244
245	case WSDISPLAYIO_GETCMAP:
246	case WSDISPLAYIO_PUTCMAP:
247		break;
248
249	case WSDISPLAYIO_SVIDEO:
250	case WSDISPLAYIO_GVIDEO:
251		break;
252
253	case WSDISPLAYIO_GCURPOS:
254	case WSDISPLAYIO_SCURPOS:
255	case WSDISPLAYIO_GCURMAX:
256	case WSDISPLAYIO_GCURSOR:
257	case WSDISPLAYIO_SCURSOR:
258	default:
259		return -1; /* not supported yet */
260        }
261
262	return (0);
263}
264
265int
266bwtwo_alloc_screen(v, type, cookiep, curxp, curyp, attrp)
267	void *v;
268	const struct wsscreen_descr *type;
269	void **cookiep;
270	int *curxp, *curyp;
271	long *attrp;
272{
273	struct bwtwo_softc *sc = v;
274
275	if (sc->sc_nscreens > 0)
276		return (ENOMEM);
277
278	*cookiep = &sc->sc_sunfb.sf_ro;
279	*curyp = 0;
280	*curxp = 0;
281	sc->sc_sunfb.sf_ro.ri_ops.alloc_attr(&sc->sc_sunfb.sf_ro,
282	    0, 0, 0, attrp);
283	sc->sc_nscreens++;
284	return (0);
285}
286
287void
288bwtwo_free_screen(v, cookie)
289	void *v;
290	void *cookie;
291{
292	struct bwtwo_softc *sc = v;
293
294	sc->sc_nscreens--;
295}
296
297int
298bwtwo_show_screen(v, cookie, waitok, cb, cbarg)
299	void *v;
300	void *cookie;
301	int waitok;
302	void (*cb)(void *, int, int);
303	void *cbarg;
304{
305	return (0);
306}
307
308#define	START		(128 * 1024 + 128 * 1024)
309#define	NOOVERLAY	(0x04000000)
310
311paddr_t
312bwtwo_mmap(v, offset, prot)
313	void *v;
314	off_t offset;
315	int prot;
316{
317	struct bwtwo_softc *sc = v;
318
319	if (offset & PGOFSET)
320		return (-1);
321
322	if (offset >= 0 && offset < sc->sc_sunfb.sf_fbsize)
323		return (bus_space_mmap(sc->sc_bustag, sc->sc_paddr,
324		    BWTWO_VID_OFFSET + offset, prot, BUS_SPACE_MAP_LINEAR));
325
326	return (-1);
327}
328
329int
330bwtwo_is_console(node)
331	int node;
332{
333	extern int fbnode;
334
335	return (fbnode == node);
336}
337
338void
339bwtwo_burner(vsc, on, flags)
340	void *vsc;
341	u_int on, flags;
342{
343	struct bwtwo_softc *sc = vsc;
344	int s;
345	u_int8_t fbc;
346
347	s = splhigh();
348	fbc = FBC_READ(sc, FBC_CTRL);
349	if (on)
350		fbc |= FBC_CTRL_VENAB | FBC_CTRL_TIME;
351	else {
352		fbc &= ~FBC_CTRL_VENAB;
353		if (flags & WSDISPLAY_BURN_VBLANK)
354			fbc &= ~FBC_CTRL_TIME;
355	}
356	FBC_WRITE(sc, FBC_CTRL, fbc);
357	splx(s);
358}
359
360void
361bwtwo_updatecursor(ri)
362	struct rasops_info *ri;
363{
364	struct bwtwo_softc *sc = ri->ri_hw;
365
366	if (sc->sc_sunfb.sf_crowp != NULL)
367		*sc->sc_sunfb.sf_crowp = ri->ri_crow;
368	if (sc->sc_sunfb.sf_ccolp != NULL)
369		*sc->sc_sunfb.sf_ccolp = ri->ri_ccol;
370}
371