pci_up1000.c revision 1.5 
1/*	$OpenBSD: pci_up1000.c,v 1.5 2001/08/17 22:26:58 mickey 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);
71int	api_up1000_intr_line(void *, pci_intr_handle_t);
72const struct evcnt *api_up1000_intr_evcnt(void *, pci_intr_handle_t);
73void    *api_up1000_intr_establish(void *, pci_intr_handle_t,
74	    int, int (*func)(void *), void *, char *);
75void    api_up1000_intr_disestablish(void *, void *);
76
77void	*api_up1000_pciide_compat_intr_establish(void *, struct device *,
78	    struct pci_attach_args *, int, int (*)(void *), void *);
79void    api_up1000_pciide_compat_intr_disestablish(void *, void *);
80
81void
82pci_up1000_pickintr(struct irongate_config *icp)
83{
84	bus_space_tag_t iot = icp->ic_iot;
85	pci_chipset_tag_t pc = &icp->ic_pc;
86
87	pc->pc_intr_v = icp;
88	pc->pc_intr_map = api_up1000_intr_map;
89	pc->pc_intr_string = api_up1000_intr_string;
90	pc->pc_intr_line = api_up1000_intr_line;
91#if 0
92	pc->pc_intr_evcnt = api_up1000_intr_evcnt;
93#endif
94	pc->pc_intr_establish = api_up1000_intr_establish;
95	pc->pc_intr_disestablish = api_up1000_intr_disestablish;
96
97	pc->pc_pciide_compat_intr_establish =
98	    api_up1000_pciide_compat_intr_establish;
99	pc->pc_pciide_compat_intr_disestablish =
100	    api_up1000_pciide_compat_intr_disestablish;
101
102#if NSIO
103	sio_intr_setup(pc, iot);
104	set_iointr(&sio_iointr);
105#else
106	panic("pci_up1000_pickintr: no I/O interrupt handler (no sio)");
107#endif
108}
109
110int
111api_up1000_intr_map(void *icv, pcitag_t bustag, int buspin, int line, pci_intr_handle_t *ihp)
112{
113	struct irongate_config *icc = icv;
114	pci_chipset_tag_t pc = &icc->ic_pc;
115	int bus, device, function;
116
117	if (buspin == 0) {
118		/* No IRQ used. */
119		return 1;
120	}
121	if (buspin > 4) {
122		printf("api_up1000_intr_map: bad interrupt pin %d\n",
123		    buspin);
124		return 1;
125	}
126
127	alpha_pci_decompose_tag(pc, bustag, &bus, &device, &function);
128
129	/*
130	 * The console places the interrupt mapping in the "line" value.
131	 * A value of (char)-1 indicates there is no mapping.
132	 */
133	if (line == 0xff) {
134		printf("api_up1000_intr_map: no mapping for %d/%d/%d\n",
135		    bus, device, function);
136		return (1);
137	}
138
139	/* XXX Check for 0? */
140	if (line > 15) {
141		printf("api_up1000_intr_map: ISA IRQ too large (%d)\n",
142		    line);
143		return (1);
144	}
145	if (line == 2) {
146		printf("api_up1000_intr_map: changed IRQ 2 to IRQ 9\n");
147		line = 9;
148	}
149
150	*ihp = line;
151	return (0);
152}
153
154const char *
155api_up1000_intr_string(void *icv, pci_intr_handle_t ih)
156{
157#if 0
158	struct irongate_config *icp = icv;
159#endif
160
161	return sio_intr_string(NULL /*XXX*/, ih);
162}
163
164int
165api_up1000_intr_line(void *icv, pci_intr_handle_t ih)
166{
167	return sio_intr_line(NULL /*XXX*/, ih);
168}
169
170#if 0
171const struct evcnt *
172api_up1000_intr_evcnt(void *icv, pci_intr_handle_t ih)
173{
174#if 0
175	struct irongate_config *icp = icv;
176#endif
177
178	return sio_intr_evcnt(NULL /*XXX*/, ih);
179}
180#endif
181
182void *
183api_up1000_intr_establish(void *icv, pci_intr_handle_t ih, int level,
184    int (*func)(void *), void *arg, char *name)
185{
186#if 0
187	struct irongate_config *icp = icv;
188#endif
189
190	return sio_intr_establish(NULL /*XXX*/, ih, IST_LEVEL, level, func,
191	    arg, name);
192}
193
194void
195api_up1000_intr_disestablish(void *icv, void *cookie)
196{
197#if 0
198	struct irongate_config *icp = icv;
199#endif
200
201	sio_intr_disestablish(NULL /*XXX*/, cookie);
202}
203
204void *
205api_up1000_pciide_compat_intr_establish(void *icv, struct device *dev,
206    struct pci_attach_args *pa, int chan, int (*func)(void *), void *arg)
207{
208	pci_chipset_tag_t pc = pa->pa_pc;
209	void *cookie = NULL;
210	int bus, irq;
211
212	alpha_pci_decompose_tag(pc, pa->pa_tag, &bus, NULL, NULL);
213
214	/*
215	 * If this isn't PCI bus #0, all bets are off.
216	 */
217	if (bus != 0)
218		return (NULL);
219
220	irq = PCIIDE_COMPAT_IRQ(chan);
221#if NSIO
222	cookie = sio_intr_establish(NULL /*XXX*/, irq, IST_EDGE, IPL_BIO,
223	    func, arg, "up 1000 irq");
224	if (cookie == NULL)
225		return (NULL);
226#endif
227	return (cookie);
228}
229
230void
231api_up1000_pciide_compat_intr_disestablish(void *v, void *cookie)
232{
233	sio_intr_disestablish(NULL, cookie);
234}
235