pci_up1000.c revision 1.4 
1/*	$OpenBSD: pci_up1000.c,v 1.4 2001/06/25 22:02:08 csapuntz 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 * 3. All advertising materials mentioning features or use of this software
20 *    must display the following acknowledgement:
21 *	This product includes software developed by the NetBSD
22 *	Foundation, Inc. and its contributors.
23 * 4. Neither the name of The NetBSD Foundation nor the names of its
24 *    contributors may be used to endorse or promote products derived
25 *    from this software without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 * POSSIBILITY OF SUCH DAMAGE.
38 */
39
40#include <sys/types.h>
41#include <sys/param.h>
42#include <sys/time.h>
43#include <sys/systm.h>
44#include <sys/errno.h>
45#include <sys/device.h>
46
47#include <vm/vm.h>
48#include <uvm/uvm_extern.h>
49
50#include <machine/autoconf.h>
51#include <machine/bus.h>
52#include <machine/intr.h>
53
54#include <dev/isa/isavar.h>
55
56#include <dev/pci/pcireg.h>
57#include <dev/pci/pcivar.h>
58#include <dev/pci/pciidereg.h>
59#include <dev/pci/pciidevar.h>
60
61#include <alpha/pci/irongatevar.h>
62
63#include <alpha/pci/pci_up1000.h>
64#include <alpha/pci/siovar.h>
65#include <alpha/pci/sioreg.h>
66
67#include "sio.h"
68
69int     api_up1000_intr_map(void *, pcitag_t, int, int, pci_intr_handle_t *);
70const char *api_up1000_intr_string(void *, pci_intr_handle_t);
71const struct evcnt *api_up1000_intr_evcnt(void *, pci_intr_handle_t);
72void    *api_up1000_intr_establish(void *, pci_intr_handle_t,
73	    int, int (*func)(void *), void *, char *);
74void    api_up1000_intr_disestablish(void *, void *);
75
76void	*api_up1000_pciide_compat_intr_establish(void *, struct device *,
77	    struct pci_attach_args *, int, int (*)(void *), void *);
78void    api_up1000_pciide_compat_intr_disestablish(void *, void *);
79
80void
81pci_up1000_pickintr(struct irongate_config *icp)
82{
83	bus_space_tag_t iot = icp->ic_iot;
84	pci_chipset_tag_t pc = &icp->ic_pc;
85
86	pc->pc_intr_v = icp;
87	pc->pc_intr_map = api_up1000_intr_map;
88	pc->pc_intr_string = api_up1000_intr_string;
89#if 0
90	pc->pc_intr_evcnt = api_up1000_intr_evcnt;
91#endif
92	pc->pc_intr_establish = api_up1000_intr_establish;
93	pc->pc_intr_disestablish = api_up1000_intr_disestablish;
94
95	pc->pc_pciide_compat_intr_establish =
96	    api_up1000_pciide_compat_intr_establish;
97	pc->pc_pciide_compat_intr_disestablish =
98	    api_up1000_pciide_compat_intr_disestablish;
99
100#if NSIO
101	sio_intr_setup(pc, iot);
102	set_iointr(&sio_iointr);
103#else
104	panic("pci_up1000_pickintr: no I/O interrupt handler (no sio)");
105#endif
106}
107
108int
109api_up1000_intr_map(void *icv, pcitag_t bustag, int buspin, int line, pci_intr_handle_t *ihp)
110{
111	struct irongate_config *icc = icv;
112	pci_chipset_tag_t pc = &icc->ic_pc;
113	int bus, device, function;
114
115	if (buspin == 0) {
116		/* No IRQ used. */
117		return 1;
118	}
119	if (buspin > 4) {
120		printf("api_up1000_intr_map: bad interrupt pin %d\n",
121		    buspin);
122		return 1;
123	}
124
125	alpha_pci_decompose_tag(pc, bustag, &bus, &device, &function);
126
127	/*
128	 * The console places the interrupt mapping in the "line" value.
129	 * A value of (char)-1 indicates there is no mapping.
130	 */
131	if (line == 0xff) {
132		printf("api_up1000_intr_map: no mapping for %d/%d/%d\n",
133		    bus, device, function);
134		return (1);
135	}
136
137	/* XXX Check for 0? */
138	if (line > 15) {
139		printf("api_up1000_intr_map: ISA IRQ too large (%d)\n",
140		    line);
141		return (1);
142	}
143	if (line == 2) {
144		printf("api_up1000_intr_map: changed IRQ 2 to IRQ 9\n");
145		line = 9;
146	}
147
148	*ihp = line;
149	return (0);
150}
151
152const char *
153api_up1000_intr_string(void *icv, pci_intr_handle_t ih)
154{
155#if 0
156	struct irongate_config *icp = icv;
157#endif
158
159	return sio_intr_string(NULL /*XXX*/, ih);
160}
161
162#if 0
163const struct evcnt *
164api_up1000_intr_evcnt(void *icv, pci_intr_handle_t ih)
165{
166#if 0
167	struct irongate_config *icp = icv;
168#endif
169
170	return sio_intr_evcnt(NULL /*XXX*/, ih);
171}
172#endif
173
174void *
175api_up1000_intr_establish(void *icv, pci_intr_handle_t ih, int level,
176    int (*func)(void *), void *arg, char *name)
177{
178#if 0
179	struct irongate_config *icp = icv;
180#endif
181
182	return sio_intr_establish(NULL /*XXX*/, ih, IST_LEVEL, level, func,
183	    arg, name);
184}
185
186void
187api_up1000_intr_disestablish(void *icv, void *cookie)
188{
189#if 0
190	struct irongate_config *icp = icv;
191#endif
192
193	sio_intr_disestablish(NULL /*XXX*/, cookie);
194}
195
196void *
197api_up1000_pciide_compat_intr_establish(void *icv, struct device *dev,
198    struct pci_attach_args *pa, int chan, int (*func)(void *), void *arg)
199{
200	pci_chipset_tag_t pc = pa->pa_pc;
201	void *cookie = NULL;
202	int bus, irq;
203
204	alpha_pci_decompose_tag(pc, pa->pa_tag, &bus, NULL, NULL);
205
206	/*
207	 * If this isn't PCI bus #0, all bets are off.
208	 */
209	if (bus != 0)
210		return (NULL);
211
212	irq = PCIIDE_COMPAT_IRQ(chan);
213#if NSIO
214	cookie = sio_intr_establish(NULL /*XXX*/, irq, IST_EDGE, IPL_BIO,
215	    func, arg, "up 1000 irq");
216	if (cookie == NULL)
217		return (NULL);
218#endif
219	return (cookie);
220}
221
222void
223api_up1000_pciide_compat_intr_disestablish(void *v, void *cookie)
224{
225	sio_intr_disestablish(NULL, cookie);
226}
227