cp3100_pci.c revision 1.1 
1/*	$NetBSD: cp3100_pci.c,v 1.1 2006/11/08 23:49:02 scw Exp $	*/
2
3/*
4 * Copyright 2006 Wasabi Systems, Inc.
5 * All rights reserved.
6 *
7 * Written by Steve C. Woodford for Wasabi Systems, Inc.
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 for the NetBSD Project by
20 *      Wasabi Systems, Inc.
21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse
22 *    or promote products derived from this software without specific prior
23 *    written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
28 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35 * POSSIBILITY OF SUCH DAMAGE.
36 */
37
38/*
39 * CP3100 PCI interrupt support.
40 */
41
42#include <sys/cdefs.h>
43__KERNEL_RCSID(0, "$NetBSD: cp3100_pci.c,v 1.1 2006/11/08 23:49:02 scw Exp $");
44
45#include <sys/param.h>
46#include <sys/systm.h>
47#include <sys/device.h>
48
49#include <machine/autoconf.h>
50#include <machine/bus.h>
51
52#include <evbarm/iq80321/iq80321reg.h>
53#include <evbarm/iq80321/iq80321var.h>
54
55#include <arm/xscale/i80321reg.h>
56#include <arm/xscale/i80321var.h>
57
58#include <dev/pci/pcidevs.h>
59#include <dev/pci/ppbreg.h>
60
61int	iq80321_pci_intr_map(struct pci_attach_args *, pci_intr_handle_t *);
62const char *iq80321_pci_intr_string(void *, pci_intr_handle_t);
63const struct evcnt *iq80321_pci_intr_evcnt(void *, pci_intr_handle_t);
64void	*iq80321_pci_intr_establish(void *, pci_intr_handle_t,
65	    int, int (*func)(void *), void *);
66void	iq80321_pci_intr_disestablish(void *, void *);
67
68void
69iq80321_pci_init(pci_chipset_tag_t pc, void *cookie)
70{
71
72	pc->pc_intr_v = cookie;		/* the i80321 softc */
73	pc->pc_intr_map = iq80321_pci_intr_map;
74	pc->pc_intr_string = iq80321_pci_intr_string;
75	pc->pc_intr_evcnt = iq80321_pci_intr_evcnt;
76	pc->pc_intr_establish = iq80321_pci_intr_establish;
77	pc->pc_intr_disestablish = iq80321_pci_intr_disestablish;
78}
79
80int
81iq80321_pci_intr_map(struct pci_attach_args *pa, pci_intr_handle_t *ihp)
82{
83	struct i80321_softc *sc = pa->pa_pc->pc_intr_v;
84	int b, d, f;
85	uint32_t busno;
86
87	busno = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_PCIXSR);
88	busno = PCIXSR_BUSNO(busno);
89	if (busno == 0xff)
90		busno = 0;
91
92	pci_decompose_tag(pa->pa_pc, pa->pa_intrtag, &b, &d, &f);
93
94	/* No mappings for devices not on our bus. */
95	if (b != busno)
96		goto no_mapping;
97
98	switch (d) {
99	case 0:			/* i82546EB Dual GigE */
100		/*
101		 * This is a dual-function chip which uses INTA and INTB,
102		 * connected to XINT0 and XINT1 respectively.
103		 */
104		if (f != 0 && f != 1)
105			goto no_mapping;
106		*ihp = ICU_INT_XINT(f);
107		return (0);
108
109	case 1:			/* i31244 S-ATA Interface */
110		*ihp = ICU_INT_XINT(2);
111		return (0);
112
113	case 2:			/* Symbios Logic 53c1010 SCSI Controllers */
114	case 3:
115		/*
116		 * Both controllers share a single pin
117		 */
118		*ihp = ICU_INT_XINT(3);
119		return (0);
120
121	default:
122 no_mapping:
123		printf("iq80321_pci_intr_map: no mapping for %d/%d/%d/%c\n",
124		    pa->pa_bus, pa->pa_device, pa->pa_function,
125		    '@' + pa->pa_intrpin);
126		return (1);
127	}
128
129	return (0);
130}
131
132const char *
133iq80321_pci_intr_string(void *v, pci_intr_handle_t ih)
134{
135
136	return (i80321_irqnames[ih]);
137}
138
139const struct evcnt *
140iq80321_pci_intr_evcnt(void *v, pci_intr_handle_t ih)
141{
142
143	/* XXX For now. */
144	return (NULL);
145}
146
147void *
148iq80321_pci_intr_establish(void *v, pci_intr_handle_t ih, int ipl,
149    int (*func)(void *), void *arg)
150{
151
152	return (i80321_intr_establish(ih, ipl, func, arg));
153}
154
155void
156iq80321_pci_intr_disestablish(void *v, void *cookie)
157{
158
159	i80321_intr_disestablish(cookie);
160}
161