1 /* $OpenBSD: pci_alphabook1.c,v 1.5 2017/09/08 05:36:51 deraadt Exp $ */
2 /* $NetBSD: pci_alphabook1.c,v 1.16 2012/02/06 02:14:15 matt Exp $ */
3
4 /*-
5 * Copyright (c) 1998 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 of the Numerical Aerospace Simulation Facility,
10 * NASA Ames Research Center.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 */
33
34 /*
35 * Copyright (c) 1995, 1996 Carnegie-Mellon University.
36 * All rights reserved.
37 *
38 * Authors: Jeffrey Hsu and Chris G. Demetriou
39 *
40 * Permission to use, copy, modify and distribute this software and
41 * its documentation is hereby granted, provided that both the copyright
42 * notice and this permission notice appear in all copies of the
43 * software, derivative works or modified versions, and any portions
44 * thereof, and that both notices appear in supporting documentation.
45 *
46 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
47 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
48 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
49 *
50 * Carnegie Mellon requests users of this software to return to
51 *
52 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
53 * School of Computer Science
54 * Carnegie Mellon University
55 * Pittsburgh PA 15213-3890
56 *
57 * any improvements or extensions that they make and grant Carnegie the
58 * rights to redistribute these changes.
59 */
60
61 #include <sys/param.h>
62 #include <sys/time.h>
63 #include <sys/systm.h>
64 #include <sys/errno.h>
65 #include <sys/device.h>
66
67 #include <machine/intr.h>
68
69 #include <dev/isa/isavar.h>
70 #include <dev/pci/pcireg.h>
71 #include <dev/pci/pcivar.h>
72 #include <dev/pci/ppbreg.h>
73
74 #include <alpha/pci/lcavar.h>
75
76 #include <alpha/pci/pci_alphabook1.h>
77 #include <alpha/pci/siovar.h>
78
79 #include "sio.h"
80
81 int dec_alphabook1_intr_map(struct pci_attach_args *,
82 pci_intr_handle_t *);
83 const char *dec_alphabook1_intr_string(void *, pci_intr_handle_t);
84 int dec_alphabook1_intr_line(void *, pci_intr_handle_t);
85 void *dec_alphabook1_intr_establish(void *, pci_intr_handle_t,
86 int, int (*func)(void *), void *, const char *);
87 void dec_alphabook1_intr_disestablish(void *, void *);
88
89 #define LCA_SIO_DEVICE 7 /* XXX */
90
91 void
pci_alphabook1_pickintr(struct lca_config * lcp)92 pci_alphabook1_pickintr(struct lca_config *lcp)
93 {
94 bus_space_tag_t iot = &lcp->lc_iot;
95 pci_chipset_tag_t pc = &lcp->lc_pc;
96 pcireg_t sioclass;
97 int sioII;
98
99 /* XXX MAGIC NUMBER */
100 sioclass = pci_conf_read(pc, pci_make_tag(pc, 0, LCA_SIO_DEVICE, 0),
101 PCI_CLASS_REG);
102 sioII = (sioclass & 0xff) >= 3;
103
104 if (!sioII)
105 printf("WARNING: SIO NOT SIO II... NO BETS...\n");
106
107 pc->pc_intr_v = lcp;
108 pc->pc_intr_map = dec_alphabook1_intr_map;
109 pc->pc_intr_string = dec_alphabook1_intr_string;
110 pc->pc_intr_line = dec_alphabook1_intr_line;
111 pc->pc_intr_establish = dec_alphabook1_intr_establish;
112 pc->pc_intr_disestablish = dec_alphabook1_intr_disestablish;
113
114 /* Not supported on AlphaBook. */
115 pc->pc_pciide_compat_intr_establish = NULL;
116
117 #if NSIO
118 sio_intr_setup(pc, iot);
119 #else
120 panic("pci_alphabook1_pickintr: no I/O interrupt handler (no sio)");
121 #endif
122 }
123
124 int
dec_alphabook1_intr_map(struct pci_attach_args * pa,pci_intr_handle_t * ihp)125 dec_alphabook1_intr_map(struct pci_attach_args *pa, pci_intr_handle_t *ihp)
126 {
127 pcitag_t bustag = pa->pa_intrtag;
128 int buspin, device;
129
130 #ifdef notyet
131 if (pa->pa_bridgetag) {
132 buspin = PPB_INTERRUPT_SWIZZLE(pa->pa_rawintrpin,
133 pa->pa_device);
134 if (pa->pa_bridgeih[buspin - 1] == 0)
135 return 1;
136
137 *ihp = pa->pa_bridgeih[buspin - 1];
138 return 0;
139 }
140 #endif
141
142 buspin = pa->pa_intrpin;
143 pci_decompose_tag(pa->pa_pc, bustag, NULL, &device, NULL);
144
145 /*
146 * There are only two interrupting PCI devices on the AlphaBook:
147 * the SCSI and PCMCIA controllers. The other PCI device is the
148 * SIO, and there are no option slots available.
149 *
150 * NOTE! Apparently, there was a later AlphaBook which uses
151 * a different interrupt scheme, and has a built-in Tulip Ethernet
152 * interface! We do not handle that here!
153 */
154
155 switch (device) {
156 case 6: /* NCR SCSI */
157 *ihp = 14;
158 return 0;
159 case 8: /* Cirrus CL-PD6729 */
160 *ihp = 15;
161 return 0;
162 default:
163 return 1;
164 }
165 }
166
167 const char *
dec_alphabook1_intr_string(void * lcv,pci_intr_handle_t ih)168 dec_alphabook1_intr_string(void *lcv, pci_intr_handle_t ih)
169 {
170 return sio_intr_string(NULL /*XXX*/, ih);
171 }
172
173 int
dec_alphabook1_intr_line(void * lcv,pci_intr_handle_t ih)174 dec_alphabook1_intr_line(void *lcv, pci_intr_handle_t ih)
175 {
176 return sio_intr_line(NULL /*XXX*/, ih);
177 }
178
179 void *
dec_alphabook1_intr_establish(void * lcv,pci_intr_handle_t ih,int level,int (* func)(void *),void * arg,const char * name)180 dec_alphabook1_intr_establish(void *lcv, pci_intr_handle_t ih,
181 int level, int (*func)(void *), void *arg, const char *name)
182 {
183 /*
184 * PCI interrupts on that platform are ISA interrupts in disguise,
185 * and are edge- rather than level-triggered.
186 */
187 return sio_intr_establish(NULL /*XXX*/, ih, IST_EDGE, level, func,
188 arg, name);
189 }
190
191 void
dec_alphabook1_intr_disestablish(void * lcv,void * cookie)192 dec_alphabook1_intr_disestablish(void *lcv, void *cookie)
193 {
194 sio_intr_disestablish(NULL /*XXX*/, cookie);
195 }
196