1/*	$NetBSD: cp3100_pci.c,v 1.5 2018/11/16 15:06:23 jmcneill 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 1.5 2018/11/16 15:06:23 jmcneill 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 <sys/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(const struct pci_attach_args *,
62	    pci_intr_handle_t *);
63const char *iq80321_pci_intr_string(void *, pci_intr_handle_t, char *, size_t);
64const struct evcnt *iq80321_pci_intr_evcnt(void *, pci_intr_handle_t);
65void	*iq80321_pci_intr_establish(void *, pci_intr_handle_t,
66	    int, int (*func)(void *), void *, const char *);
67void	iq80321_pci_intr_disestablish(void *, void *);
68
69void
70iq80321_pci_init(pci_chipset_tag_t pc, void *cookie)
71{
72
73	pc->pc_intr_v = cookie;		/* the i80321 softc */
74	pc->pc_intr_map = iq80321_pci_intr_map;
75	pc->pc_intr_string = iq80321_pci_intr_string;
76	pc->pc_intr_evcnt = iq80321_pci_intr_evcnt;
77	pc->pc_intr_establish = iq80321_pci_intr_establish;
78	pc->pc_intr_disestablish = iq80321_pci_intr_disestablish;
79}
80
81int
82iq80321_pci_intr_map(const struct pci_attach_args *pa, pci_intr_handle_t *ihp)
83{
84	struct i80321_softc *sc = pa->pa_pc->pc_intr_v;
85	int b, d, f;
86	uint32_t busno;
87
88	busno = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_PCIXSR);
89	busno = PCIXSR_BUSNO(busno);
90	if (busno == 0xff)
91		busno = 0;
92
93	pci_decompose_tag(pa->pa_pc, pa->pa_intrtag, &b, &d, &f);
94
95	/* No mappings for devices not on our bus. */
96	if (b != busno)
97		goto no_mapping;
98
99	switch (d) {
100	case 0:			/* i82546EB Dual GigE */
101		/*
102		 * This is a dual-function chip which uses INTA and INTB,
103		 * connected to XINT0 and XINT1 respectively.
104		 */
105		if (f != 0 && f != 1)
106			goto no_mapping;
107		*ihp = ICU_INT_XINT(f);
108		return (0);
109
110	case 1:			/* i31244 S-ATA Interface */
111		*ihp = ICU_INT_XINT(2);
112		return (0);
113
114	case 2:			/* Symbios Logic 53c1010 SCSI Controllers */
115	case 3:
116		/*
117		 * Both controllers share a single pin
118		 */
119		*ihp = ICU_INT_XINT(3);
120		return (0);
121
122	default:
123 no_mapping:
124		printf("iq80321_pci_intr_map: no mapping for %d/%d/%d/%c\n",
125		    pa->pa_bus, pa->pa_device, pa->pa_function,
126		    '@' + pa->pa_intrpin);
127		return (1);
128	}
129
130	return (0);
131}
132
133const char *
134iq80321_pci_intr_string(void *v, pci_intr_handle_t ih, char *buf, size_t len)
135{
136
137	strlcpy(buf, i80321_irqnames[ih], len);
138	return buf;
139}
140
141const struct evcnt *
142iq80321_pci_intr_evcnt(void *v, pci_intr_handle_t ih)
143{
144
145	/* XXX For now. */
146	return (NULL);
147}
148
149void *
150iq80321_pci_intr_establish(void *v, pci_intr_handle_t ih, int ipl,
151    int (*func)(void *), void *arg, const char *xname)
152{
153
154	return (i80321_intr_establish(ih, ipl, func, arg));
155}
156
157void
158iq80321_pci_intr_disestablish(void *v, void *cookie)
159{
160
161	i80321_intr_disestablish(cookie);
162}
163