1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
|
/* $OpenBSD: pcib.c,v 1.7 2022/02/21 11:03:39 mpi Exp $ */
/* $NetBSD: pcib.c,v 1.6 1997/06/06 23:29:16 thorpej Exp $ */
/*-
* Copyright (c) 1996 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <machine/bus.h>
#include <dev/isa/isavar.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcidevs.h>
#include "isa.h"
int pcibmatch(struct device *, void *, void *);
void pcibattach(struct device *, struct device *, void *);
void pcib_callback(struct device *);
int pcib_print(void *, const char *);
const struct cfattach pcib_ca = {
sizeof(struct device), pcibmatch, pcibattach
};
struct cfdriver pcib_cd = {
NULL, "pcib", DV_DULL
};
int
pcibmatch(struct device *parent, void *match, void *aux)
{
struct pci_attach_args *pa = aux;
switch (PCI_VENDOR(pa->pa_id)) {
case PCI_VENDOR_INTEL:
switch (PCI_PRODUCT(pa->pa_id)) {
case PCI_PRODUCT_INTEL_SIO:
case PCI_PRODUCT_INTEL_82371MX:
case PCI_PRODUCT_INTEL_82371AB_ISA:
case PCI_PRODUCT_INTEL_82440MX_ISA:
/* The above bridges mis-identify themselves */
return (1);
}
break;
case PCI_VENDOR_SIS:
switch (PCI_PRODUCT(pa->pa_id)) {
case PCI_PRODUCT_SIS_85C503:
/* mis-identifies itself as a miscellaneous prehistoric */
return (1);
}
break;
case PCI_VENDOR_VIATECH:
switch (PCI_PRODUCT(pa->pa_id)) {
case PCI_PRODUCT_VIATECH_VT82C686A_SMB:
/* mis-identifies itself as a ISA bridge */
return (0);
}
break;
}
if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE &&
PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_BRIDGE_ISA)
return (1);
return (0);
}
void
pcibattach(struct device *parent, struct device *self, void *aux)
{
/*
* Cannot attach isa bus now; must postpone for various reasons
*/
printf("\n");
config_defer(self, pcib_callback);
}
void
pcib_callback(struct device *self)
{
struct isabus_attach_args iba;
/*
* Attach the ISA bus behind this bridge.
*/
memset(&iba, 0, sizeof(iba));
iba.iba_busname = "isa";
iba.iba_iot = X86_BUS_SPACE_IO;
iba.iba_memt = X86_BUS_SPACE_MEM;
#if NISADMA > 0
iba.iba_dmat = &isa_bus_dma_tag;
#endif
config_found(self, &iba, pcib_print);
}
int
pcib_print(void *aux, const char *pnp)
{
/* Only ISAs can attach to pcib's; easy. */
if (pnp)
printf("isa at %s", pnp);
return (UNCONF);
}
|
