pci_up1000.c revision 1.14 
1/*	$OpenBSD: pci_up1000.c,v 1.14 2008/07/22 18:45:51 miod Exp $	*/
2/* $NetBSD: pci_up1000.c,v 1.6 2000/12/28 22:59:07 sommerfeld Exp $ */
3
4/*-
5 * Copyright (c) 2000 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Jason R. Thorpe.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in the
18 *    documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#include <sys/types.h>
34#include <sys/param.h>
35#include <sys/time.h>
36#include <sys/systm.h>
37#include <sys/errno.h>
38#include <sys/device.h>
39
40#include <uvm/uvm_extern.h>
41
42#include <machine/autoconf.h>
43#include <machine/bus.h>
44#include <machine/intr.h>
45
46#include <dev/isa/isavar.h>
47
48#include <dev/pci/pcireg.h>
49#include <dev/pci/pcivar.h>
50#include <dev/pci/pciidereg.h>
51#include <dev/pci/pciidevar.h>
52
53#include <alpha/pci/irongatevar.h>
54
55#include <alpha/pci/pci_up1000.h>
56#include <alpha/pci/siovar.h>
57#include <alpha/pci/sioreg.h>
58
59#include "sio.h"
60
61int     api_up1000_intr_map(struct pci_attach_args *, pci_intr_handle_t *);
62const char *api_up1000_intr_string(void *, pci_intr_handle_t);
63int	api_up1000_intr_line(void *, pci_intr_handle_t);
64void    *api_up1000_intr_establish(void *, pci_intr_handle_t,
65	    int, int (*func)(void *), void *, char *);
66void    api_up1000_intr_disestablish(void *, void *);
67
68void	*api_up1000_pciide_compat_intr_establish(void *, struct device *,
69	    struct pci_attach_args *, int, int (*)(void *), void *);
70void    api_up1000_pciide_compat_intr_disestablish(void *, void *);
71
72void
73pci_up1000_pickintr(struct irongate_config *icp)
74{
75	bus_space_tag_t iot = &icp->ic_iot;
76	pci_chipset_tag_t pc = &icp->ic_pc;
77
78	pc->pc_intr_v = icp;
79	pc->pc_intr_map = api_up1000_intr_map;
80	pc->pc_intr_string = api_up1000_intr_string;
81	pc->pc_intr_line = api_up1000_intr_line;
82	pc->pc_intr_establish = api_up1000_intr_establish;
83	pc->pc_intr_disestablish = api_up1000_intr_disestablish;
84
85	pc->pc_pciide_compat_intr_establish =
86	    api_up1000_pciide_compat_intr_establish;
87	pc->pc_pciide_compat_intr_disestablish =
88	    api_up1000_pciide_compat_intr_disestablish;
89
90#if NSIO
91	sio_intr_setup(pc, iot);
92#else
93	panic("pci_up1000_pickintr: no I/O interrupt handler (no sio)");
94#endif
95}
96
97int
98api_up1000_intr_map(struct pci_attach_args *pa, pci_intr_handle_t *ihp)
99{
100	pcitag_t bustag = pa->pa_intrtag;
101	int buspin = pa->pa_intrpin, line = pa->pa_intrline;
102	pci_chipset_tag_t pc = pa->pa_pc;
103	int bus, device, function;
104
105	if (buspin == 0) {
106		/* No IRQ used. */
107		return 1;
108	}
109	if (buspin > 4) {
110		printf("api_up1000_intr_map: bad interrupt pin %d\n",
111		    buspin);
112		return 1;
113	}
114
115	pci_decompose_tag(pc, bustag, &bus, &device, &function);
116
117	/*
118	 * The console places the interrupt mapping in the "line" value.
119	 * A value of (char)-1 indicates there is no mapping.
120	 */
121	if (line == 0xff) {
122		printf("api_up1000_intr_map: no mapping for %d/%d/%d\n",
123		    bus, device, function);
124		return (1);
125	}
126
127	/* XXX Check for 0? */
128	if (line > 15) {
129#ifdef DIAGNOSTIC
130		printf("api_up1000_intr_map: ISA IRQ too large (%d)\n",
131		    line);
132#endif
133		return (1);
134	}
135	if (line == 2) {
136#ifdef DIAGNOSTIC
137		printf("api_up1000_intr_map: changed IRQ 2 to IRQ 9\n");
138#endif
139		line = 9;
140	}
141
142	*ihp = line;
143	return (0);
144}
145
146const char *
147api_up1000_intr_string(void *icv, pci_intr_handle_t ih)
148{
149#if 0
150	struct irongate_config *icp = icv;
151#endif
152
153	return sio_intr_string(NULL /*XXX*/, ih);
154}
155
156int
157api_up1000_intr_line(void *icv, pci_intr_handle_t ih)
158{
159	return sio_intr_line(NULL /*XXX*/, ih);
160}
161
162void *
163api_up1000_intr_establish(void *icv, pci_intr_handle_t ih, int level,
164    int (*func)(void *), void *arg, char *name)
165{
166#if 0
167	struct irongate_config *icp = icv;
168#endif
169
170	return sio_intr_establish(NULL /*XXX*/, ih, IST_LEVEL, level, func,
171	    arg, name);
172}
173
174void
175api_up1000_intr_disestablish(void *icv, void *cookie)
176{
177#if 0
178	struct irongate_config *icp = icv;
179#endif
180
181	sio_intr_disestablish(NULL /*XXX*/, cookie);
182}
183
184void *
185api_up1000_pciide_compat_intr_establish(void *icv, struct device *dev,
186    struct pci_attach_args *pa, int chan, int (*func)(void *), void *arg)
187{
188	pci_chipset_tag_t pc = pa->pa_pc;
189	void *cookie = NULL;
190	int bus, irq;
191
192	pci_decompose_tag(pc, pa->pa_tag, &bus, NULL, NULL);
193
194	/*
195	 * If this isn't PCI bus #0, all bets are off.
196	 */
197	if (bus != 0)
198		return (NULL);
199
200	irq = PCIIDE_COMPAT_IRQ(chan);
201#if NSIO
202	cookie = sio_intr_establish(NULL /*XXX*/, irq, IST_EDGE, IPL_BIO,
203	    func, arg, dev->dv_xname);
204	if (cookie == NULL)
205		return (NULL);
206#endif
207	return (cookie);
208}
209
210void
211api_up1000_pciide_compat_intr_disestablish(void *v, void *cookie)
212{
213	sio_intr_disestablish(NULL, cookie);
214}
215