npwr_fc_pci.c revision 1.2 
1/*	$NetBSD: npwr_fc_pci.c,v 1.2 2011/04/04 20:37:49 dyoung Exp $	*/
2
3/*
4 * Copyright (c) 2001, 2002 Wasabi Systems, Inc.
5 * All rights reserved.
6 *
7 * Written by Jason R. Thorpe 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 * IQ80321 PCI interrupt support.
40 */
41
42#include <sys/cdefs.h>
43__KERNEL_RCSID(0, "$NetBSD: npwr_fc_pci.c,v 1.2 2011/04/04 20:37:49 dyoung 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(const struct pci_attach_args *,
62	    pci_intr_handle_t *);
63const char *iq80321_pci_intr_string(void *, pci_intr_handle_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 *);
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	/*
89	 * The IQ80321's interrupts are routed like so:
90	 *
91	 *	XINT0	i82544 Gig-E
92	 *
93	 *	XINT1	UART
94	 *
95	 *	XINT2	INTA# from S-PCI-X slot
96	 *
97	 *	XINT3	INTB# from S-PCI-X slot
98	 */
99
100	busno = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_PCIXSR);
101	busno = PCIXSR_BUSNO(busno);
102	if (busno == 0xff)
103		busno = 0;
104
105	pci_decompose_tag(pa->pa_pc, pa->pa_intrtag, &b, &d, &f);
106
107	/* No mappings for devices not on our bus. */
108	if (b != busno)
109		goto no_mapping;
110
111	switch (d) {
112	case 0:			/* i82546 Dual Gig-E */
113		if (pa->pa_intrpin == 1) {
114			*ihp = ICU_INT_XINT(0);
115			return (0);
116		}
117		if (pa->pa_intrpin == 2) {
118			*ihp = ICU_INT_XINT(1);
119			return (0);
120		}
121		goto no_mapping;
122
123	case 1:			/* i31244 SATA */
124		if (pa->pa_intrpin == 1) {
125			*ihp = ICU_INT_XINT(2);
126			return (0);
127		}
128		goto no_mapping;
129
130	case 2:			/* LSI Fibre */
131		if (pa->pa_intrpin == 1) {
132			*ihp = ICU_INT_XINT(3);
133			return (0);
134		}
135		goto no_mapping;
136
137	default:
138 no_mapping:
139		printf("iq80321_pci_intr_map: no mapping for %d/%d/%d\n",
140		    pa->pa_bus, pa->pa_device, pa->pa_function);
141		return (1);
142	}
143
144	return (0);
145}
146
147const char *
148iq80321_pci_intr_string(void *v, pci_intr_handle_t ih)
149{
150
151	return (i80321_irqnames[ih]);
152}
153
154const struct evcnt *
155iq80321_pci_intr_evcnt(void *v, pci_intr_handle_t ih)
156{
157
158	/* XXX For now. */
159	return (NULL);
160}
161
162void *
163iq80321_pci_intr_establish(void *v, pci_intr_handle_t ih, int ipl,
164    int (*func)(void *), void *arg)
165{
166
167	return (i80321_intr_establish(ih, ipl, func, arg));
168}
169
170void
171iq80321_pci_intr_disestablish(void *v, void *cookie)
172{
173
174	i80321_intr_disestablish(cookie);
175}
176