summaryrefslogtreecommitdiff
path: root/sys/arch/hp300/dev/frodo.c
blob: 225fcb8c3aa862905b3a5f49e43ec63a9812c2e8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
/*	$OpenBSD: frodo.c,v 1.4 2004/09/29 07:35:52 miod Exp $	*/
/*	$NetBSD: frodo.c,v 1.5 1999/07/31 21:15:20 thorpej Exp $	*/

/*-
 * Copyright (c) 1997, 1998, 1999 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Jason R. Thorpe.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the NetBSD
 *	Foundation, Inc. and its contributors.
 * 4. Neither the name of The NetBSD Foundation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

/*
 * Copyright (c) 1997 Michael Smith.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

/*
 * Support for the "Frodo" (a.k.a. "Apollo Utility") chip found
 * in HP Apollo 9000/4xx workstations.
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/syslog.h>
#include <sys/device.h>

#include <machine/cpu.h>
#include <machine/intr.h>
#include <machine/hp300spu.h>

#include <hp300/dev/intiovar.h>

#include <hp300/dev/frodoreg.h>
#include <hp300/dev/frodovar.h>

struct frodo_softc {
	struct device	sc_dev;		/* generic device glue */
	volatile u_int8_t *sc_regs;	/* register base */
	struct isr	*sc_intr[FRODO_NINTR]; /* interrupt handlers */
	struct isr	sc_isr;		/* main interrupt handler */
	int		sc_refcnt;	/* number of interrupt refs */
};

int	frodomatch(struct device *, void *, void *);
void	frodoattach(struct device *, struct device *, void *);

int	frodoprint(void *, const char *);
int	frodosubmatch(struct device *, void *, void *);

int	frodointr(void *);

void	frodo_imask(struct frodo_softc *, u_int16_t, u_int16_t);

struct cfattach frodo_ca = {
	sizeof(struct frodo_softc), frodomatch, frodoattach
};

struct cfdriver frodo_cd = {
	NULL, "frodo", DV_DULL
};

struct frodo_attach_args frodo_subdevs[] = {
	{ "dnkbd",	FRODO_APCI_OFFSET(0),	FRODO_INTR_APCI0 },
	{ "apci",	FRODO_APCI_OFFSET(1),	FRODO_INTR_APCI1 },
	{ "apci",	FRODO_APCI_OFFSET(2),	FRODO_INTR_APCI2 },
	{ "apci",	FRODO_APCI_OFFSET(3),	FRODO_INTR_APCI3 },
	{ NULL,		0,			0 },
};

int
frodomatch(parent, match, aux)
	struct device *parent;
	void *match, *aux;
{
	struct intio_attach_args *ia = aux;
	caddr_t va;
	static int frodo_matched = 0;

	/* only allow one instance */
	if (frodo_matched)
		return (0);

	/* only 4xx workstations can have this */
	switch (machineid) {
	case HP_400:
	case HP_425:
	case HP_433:
		break;

	default:
		return (0);
	}

	/* make sure the hardware is there in any case */
	va = (caddr_t)IIOV(FRODO_BASE);
	if (badaddr(va))
		return (0);

	frodo_matched = 1;
	ia->ia_addr = (caddr_t)FRODO_BASE;
	return (1);
}

void
frodoattach(parent, self, aux)
	struct device *parent, *self;
	void *aux;
{
	struct frodo_softc *sc = (struct frodo_softc *)self;
	struct intio_attach_args *ia = aux;
	int i;

	sc->sc_regs = (volatile u_int8_t *)IIOV(ia->ia_addr);

	if ((FRODO_READ(sc, FRODO_IISR) & FRODO_IISR_SERVICE) == 0)
		printf(": service mode enabled");
	printf("\n");

	/* Clear all of the interrupt handlers. */
	bzero(sc->sc_intr, sizeof(sc->sc_intr));

	/*
	 * Disable all of the interrupt lines; we reenable them
	 * as subdevices attach.
	 */
	frodo_imask(sc, 0, 0xffff);

	/* Clear any pending interrupts. */
	FRODO_WRITE(sc, FRODO_PIC_PU, 0xff);
	FRODO_WRITE(sc, FRODO_PIC_PL, 0xff);

	/* Set interrupt polarities. */
	FRODO_WRITE(sc, FRODO_PIO_IPR, 0x10);

	/* ...and configure for edge triggering. */
	FRODO_WRITE(sc, FRODO_PIO_IELR, 0xcf);

	/*
	 * We defer hooking up our interrupt handler until
	 * a subdevice hooks up theirs.
	 */
	sc->sc_refcnt = 0;

	/* ... and attach subdevices. */
	for (i = 0; frodo_subdevs[i].fa_name != NULL; i++) {
		/*
		 * Skip the first serial port if we're not a 425e;
		 * it's mapped to the DCA at select code 9 on all
		 * other models.
		 */
		if (frodo_subdevs[i].fa_offset == FRODO_APCI_OFFSET(1) &&
		    mmuid != MMUID_425_E)
			continue;
		config_found_sm(self, &frodo_subdevs[i],
		    frodoprint, frodosubmatch);
	}
}

int
frodosubmatch(parent, match, aux)
	struct device *parent;
	void *match, *aux;
{
	struct cfdata *cf = match;
	struct frodo_attach_args *fa = aux;

	if (cf->frodocf_offset != FRODO_UNKNOWN_OFFSET &&
	    cf->frodocf_offset != fa->fa_offset)
		return (0);

	return ((*cf->cf_attach->ca_match)(parent, cf, aux));
}

int
frodoprint(aux, pnp)
	void *aux;
	const char *pnp;
{
	struct frodo_attach_args *fa = aux;

	if (pnp)
		printf("%s at %s", fa->fa_name, pnp);
	printf(" offset 0x%x", fa->fa_offset);
	return (UNCONF);
}

void
frodo_intr_establish(struct device *frdev, int line, struct isr *isr,
    const char *name)
{
	struct frodo_softc *sc = (struct frodo_softc *)frdev;
	int priority = isr->isr_priority;

	if (line < 0 || line >= FRODO_NINTR) {
		panic("%s: bad interrupt line %d",
		    sc->sc_dev.dv_xname, line);
	}
	if (sc->sc_intr[line] != NULL) {
		panic("%s: interrupt line %d already used",
		    sc->sc_dev.dv_xname, line);
	}

	/*
	 * If this is the first one, establish the frodo
	 * interrupt handler.  If not, reestablish at a
	 * higher priority if necessary.
	 */
	if (sc->sc_isr.isr_priority < priority) {
		if (sc->sc_refcnt != 0)
			intr_disestablish(&sc->sc_isr);
		sc->sc_isr.isr_func = frodointr;
		sc->sc_isr.isr_arg = sc;
		sc->sc_isr.isr_ipl = 5;
		sc->sc_isr.isr_priority = priority;
		intr_establish(&sc->sc_isr, sc->sc_dev.dv_xname);
	}

	sc->sc_refcnt++;

	/* Install the handler. */
	isr->isr_ipl = sc->sc_isr.isr_ipl;
	evcount_attach(&isr->isr_count, name, &isr->isr_ipl, &evcount_intr);
	sc->sc_intr[line] = isr;

	/* Enable the interrupt line. */
	frodo_imask(sc, (1 << line), 0);
}

void
frodo_intr_disestablish(frdev, line)
	struct device *frdev;
	int line;
{
	struct frodo_softc *sc = (struct frodo_softc *)frdev;
	int newpri;

	if (sc->sc_intr[line] == NULL) {
		panic("%s: no handler for line %d",
		    sc->sc_dev.dv_xname, line);
	}

	sc->sc_intr[line] = NULL;
	frodo_imask(sc, 0, (1 << line));

	/* If this was the last, unhook ourselves. */
	if (sc->sc_refcnt-- == 1) {
		intr_disestablish(&sc->sc_isr);
		return;
	}

	/* Lower our priority, if appropriate. */
	for (newpri = 0, line = 0; line < FRODO_NINTR; line++)
		if (sc->sc_intr[line] != NULL &&
		    sc->sc_intr[line]->isr_priority > newpri)
			newpri = sc->sc_intr[line]->isr_priority;

	if (newpri != sc->sc_isr.isr_priority) {
		intr_disestablish(&sc->sc_isr);
		sc->sc_isr.isr_func = frodointr;
		sc->sc_isr.isr_arg = sc;
		sc->sc_isr.isr_ipl = 5;
		sc->sc_isr.isr_priority = newpri;
		intr_establish(&sc->sc_isr, sc->sc_dev.dv_xname);
	}
}

int
frodointr(arg)
	void *arg;
{
	struct frodo_softc *sc = arg;
	struct isr *fisr;
	int line, taken = 0;

	/* Any interrupts pending? */
	if (FRODO_GETPEND(sc) == 0)
		return (0);

	do {
		/*
		 * Get pending interrupt; this also clears it for us.
		 */
		line = FRODO_IPEND(sc);
		fisr = sc->sc_intr[line];
		if (fisr == NULL) {
			printf("%s: unhandled interrupt on line %d\n",
			    sc->sc_dev.dv_xname, line);
		} else {
			if ((*fisr->isr_func)(fisr->isr_arg) != 0) {
				fisr->isr_count.ec_count++;
			} else {
				printf("%s: spurious interrupt on line %d\n",
				    sc->sc_dev.dv_xname, line);
			}
		}
		if (taken++ > 100)
			panic("frodointr: looping!");
	} while (FRODO_GETPEND(sc) != 0);

	return (1);
}

void
frodo_imask(sc, set, clear)
	struct frodo_softc *sc;
	u_int16_t set, clear;
{
	u_int16_t imask;

	imask = FRODO_GETMASK(sc);

	imask |= set;
	imask &= ~clear;

	FRODO_SETMASK(sc, imask);
}