bwtwo.c revision 1.13 
1/*	$OpenBSD: bwtwo.c,v 1.13 2005/03/01 21:23:36 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 node, console;
161	const char *nam;
162
163	node = sa->sa_node;
164	sc->sc_bustag = sa->sa_bustag;
165	sc->sc_paddr = sbus_bus_addr(sa->sa_bustag, sa->sa_slot, sa->sa_offset);
166
167	fb_setsize(&sc->sc_sunfb, 1, 1152, 900, node, 0);
168
169	if (sa->sa_nreg != 1) {
170		printf(": expected %d registers, got %d\n", 1, sa->sa_nreg);
171		goto fail;
172	}
173
174	/*
175	 * Map just CTRL and video RAM.
176	 */
177	if (sbus_bus_map(sa->sa_bustag, sa->sa_reg[0].sbr_slot,
178	    sa->sa_reg[0].sbr_offset + BWTWO_CTRL_OFFSET,
179	    BWTWO_CTRL_SIZE, 0, 0, &sc->sc_ctrl_regs) != 0) {
180		printf(": cannot map ctrl registers\n");
181		goto fail_ctrl;
182	}
183
184	if (sbus_bus_map(sa->sa_bustag, sa->sa_reg[0].sbr_slot,
185	    sa->sa_reg[0].sbr_offset + BWTWO_VID_OFFSET,
186	    sc->sc_sunfb.sf_fbsize, BUS_SPACE_MAP_LINEAR,
187	    0, &sc->sc_vid_regs) != 0) {
188		printf(": cannot map vid registers\n");
189		goto fail_vid;
190	}
191
192	nam = getpropstring(node, "model");
193	if (*nam == '\0')
194		nam = sa->sa_name;
195	printf(": %s", nam);
196
197	console = bwtwo_is_console(node);
198
199	sbus_establish(&sc->sc_sd, &sc->sc_sunfb.sf_dev);
200
201	bwtwo_burner(sc, 1, 0);
202
203	printf(", %dx%d\n", sc->sc_sunfb.sf_width, sc->sc_sunfb.sf_height);
204
205	sc->sc_sunfb.sf_ro.ri_bits = (void *)bus_space_vaddr(sc->sc_bustag,
206	    sc->sc_vid_regs);
207	sc->sc_sunfb.sf_ro.ri_hw = sc;
208	fbwscons_init(&sc->sc_sunfb, console ? 0 : RI_CLEAR);
209
210	if (console) {
211		sc->sc_sunfb.sf_ro.ri_updatecursor = bwtwo_updatecursor;
212		fbwscons_console_init(&sc->sc_sunfb, -1, bwtwo_burner);
213	}
214
215	fbwscons_attach(&sc->sc_sunfb, &bwtwo_accessops, console);
216
217	return;
218
219fail_vid:
220	bus_space_unmap(sa->sa_bustag, sc->sc_ctrl_regs, BWTWO_CTRL_SIZE);
221fail_ctrl:
222fail:
223;
224}
225
226int
227bwtwo_ioctl(v, cmd, data, flags, p)
228	void *v;
229	u_long cmd;
230	caddr_t data;
231	int flags;
232	struct proc *p;
233{
234	struct bwtwo_softc *sc = v;
235	struct wsdisplay_fbinfo *wdf;
236
237	switch (cmd) {
238	case WSDISPLAYIO_GTYPE:
239		*(u_int *)data = WSDISPLAY_TYPE_SUNBW;
240		break;
241	case WSDISPLAYIO_GINFO:
242		wdf = (void *)data;
243		wdf->height = sc->sc_sunfb.sf_height;
244		wdf->width  = sc->sc_sunfb.sf_width;
245		wdf->depth  = sc->sc_sunfb.sf_depth;
246		wdf->cmsize = 0;
247		break;
248	case WSDISPLAYIO_LINEBYTES:
249		*(u_int *)data = sc->sc_sunfb.sf_linebytes;
250		break;
251
252	case WSDISPLAYIO_GETCMAP:
253	case WSDISPLAYIO_PUTCMAP:
254		break;
255
256	case WSDISPLAYIO_SVIDEO:
257	case WSDISPLAYIO_GVIDEO:
258		break;
259
260	case WSDISPLAYIO_GCURPOS:
261	case WSDISPLAYIO_SCURPOS:
262	case WSDISPLAYIO_GCURMAX:
263	case WSDISPLAYIO_GCURSOR:
264	case WSDISPLAYIO_SCURSOR:
265	default:
266		return -1; /* not supported yet */
267        }
268
269	return (0);
270}
271
272int
273bwtwo_alloc_screen(v, type, cookiep, curxp, curyp, attrp)
274	void *v;
275	const struct wsscreen_descr *type;
276	void **cookiep;
277	int *curxp, *curyp;
278	long *attrp;
279{
280	struct bwtwo_softc *sc = v;
281
282	if (sc->sc_nscreens > 0)
283		return (ENOMEM);
284
285	*cookiep = &sc->sc_sunfb.sf_ro;
286	*curyp = 0;
287	*curxp = 0;
288	sc->sc_sunfb.sf_ro.ri_ops.alloc_attr(&sc->sc_sunfb.sf_ro,
289	    0, 0, 0, attrp);
290	sc->sc_nscreens++;
291	return (0);
292}
293
294void
295bwtwo_free_screen(v, cookie)
296	void *v;
297	void *cookie;
298{
299	struct bwtwo_softc *sc = v;
300
301	sc->sc_nscreens--;
302}
303
304int
305bwtwo_show_screen(v, cookie, waitok, cb, cbarg)
306	void *v;
307	void *cookie;
308	int waitok;
309	void (*cb)(void *, int, int);
310	void *cbarg;
311{
312	return (0);
313}
314
315#define	START		(128 * 1024 + 128 * 1024)
316#define	NOOVERLAY	(0x04000000)
317
318paddr_t
319bwtwo_mmap(v, offset, prot)
320	void *v;
321	off_t offset;
322	int prot;
323{
324	struct bwtwo_softc *sc = v;
325
326	if (offset & PGOFSET)
327		return (-1);
328
329	if (offset >= 0 && offset < sc->sc_sunfb.sf_fbsize)
330		return (bus_space_mmap(sc->sc_bustag, sc->sc_paddr,
331		    BWTWO_VID_OFFSET + offset, prot, BUS_SPACE_MAP_LINEAR));
332
333	return (-1);
334}
335
336int
337bwtwo_is_console(node)
338	int node;
339{
340	extern int fbnode;
341
342	return (fbnode == node);
343}
344
345void
346bwtwo_burner(vsc, on, flags)
347	void *vsc;
348	u_int on, flags;
349{
350	struct bwtwo_softc *sc = vsc;
351	int s;
352	u_int8_t fbc;
353
354	s = splhigh();
355	fbc = FBC_READ(sc, FBC_CTRL);
356	if (on)
357		fbc |= FBC_CTRL_VENAB | FBC_CTRL_TIME;
358	else {
359		fbc &= ~FBC_CTRL_VENAB;
360		if (flags & WSDISPLAY_BURN_VBLANK)
361			fbc &= ~FBC_CTRL_TIME;
362	}
363	FBC_WRITE(sc, FBC_CTRL, fbc);
364	splx(s);
365}
366
367void
368bwtwo_updatecursor(ri)
369	struct rasops_info *ri;
370{
371	struct bwtwo_softc *sc = ri->ri_hw;
372
373	if (sc->sc_sunfb.sf_crowp != NULL)
374		*sc->sc_sunfb.sf_crowp = ri->ri_crow;
375	if (sc->sc_sunfb.sf_ccolp != NULL)
376		*sc->sc_sunfb.sf_ccolp = ri->ri_ccol;
377}
378