1 /* $NetBSD: pcib.c,v 1.18 2021/08/07 16:18:47 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 1996, 1998 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 *
31 * from: i386/pci/pcib.c,v 1.12
32 */
33
34 #include <sys/cdefs.h>
35 __KERNEL_RCSID(0, "$NetBSD: pcib.c,v 1.18 2021/08/07 16:18:47 thorpej Exp $");
36
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/device.h>
40
41 #include <sys/bus.h>
42
43 #include <dev/isa/isavar.h>
44
45 #include <dev/pci/pcivar.h>
46 #include <dev/pci/pcireg.h>
47
48 #include <dev/pci/pcidevs.h>
49
50 #include "isadma.h"
51
52 int pcibmatch(device_t, cfdata_t, void *);
53 void pcibattach(device_t, device_t, void *);
54
55 CFATTACH_DECL_NEW(pcib, 0,
56 pcibmatch, pcibattach, NULL, NULL);
57
58 void pcib_callback(device_t);
59
60 int
pcibmatch(device_t parent,cfdata_t match,void * aux)61 pcibmatch(device_t parent, cfdata_t match, void *aux)
62 {
63 struct pci_attach_args *pa = aux;
64
65 /*
66 * Match tested PCI-ISA bridges.
67 */
68 switch (PCI_VENDOR(pa->pa_id)) {
69 case PCI_VENDOR_ALI:
70 switch (PCI_PRODUCT(pa->pa_id)) {
71 case PCI_PRODUCT_ALI_M1533:
72 return (1);
73 }
74 break;
75 }
76
77 return (0);
78 }
79
80 void
pcibattach(device_t parent,device_t self,void * aux)81 pcibattach(device_t parent, device_t self, void *aux)
82 {
83 struct pci_attach_args *pa = aux;
84 char devinfo[256];
85
86 printf("\n");
87
88 /*
89 * Just print out a description and set the ISA bus
90 * callback.
91 */
92 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo));
93 printf("%s: %s (rev. 0x%02x)\n", device_xname(self), devinfo,
94 PCI_REVISION(pa->pa_class));
95
96 /* Set the ISA bus callback */
97 config_defer(self, pcib_callback);
98 }
99
100 void
pcib_callback(device_t self)101 pcib_callback(device_t self)
102 {
103 struct isabus_attach_args iba;
104
105 /*
106 * Attach the ISA bus behind this bridge.
107 */
108 memset(&iba, 0, sizeof(iba));
109 iba.iba_iot = &isa_io_bs_tag;
110 iba.iba_memt = &isa_mem_bs_tag;
111 #if NISADMA > 0
112 iba.iba_dmat = &isa_bus_dma_tag;
113 #endif
114 config_found(self, &iba, isabusprint, CFARGS_NONE);
115 }
116