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
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
|
/* $OpenBSD: lca_pci.c,v 1.8 2002/03/14 01:26:27 millert Exp $ */
/* $NetBSD: lca_pci.c,v 1.13 1997/09/02 13:19:35 thorpej Exp $ */
/*
* Copyright (c) 1995, 1996 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Chris G. Demetriou
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <uvm/uvm_extern.h>
#include <machine/autoconf.h> /* badaddr proto */
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <alpha/pci/lcareg.h>
#include <alpha/pci/lcavar.h>
void lca_attach_hook(struct device *, struct device *,
struct pcibus_attach_args *);
int lca_bus_maxdevs(void *, int);
pcitag_t lca_make_tag(void *, int, int, int);
void lca_decompose_tag(void *, pcitag_t, int *, int *,
int *);
pcireg_t lca_conf_read(void *, pcitag_t, int);
void lca_conf_write(void *, pcitag_t, int, pcireg_t);
void
lca_pci_init(pc, v)
pci_chipset_tag_t pc;
void *v;
{
pc->pc_conf_v = v;
pc->pc_attach_hook = lca_attach_hook;
pc->pc_bus_maxdevs = lca_bus_maxdevs;
pc->pc_make_tag = lca_make_tag;
pc->pc_decompose_tag = lca_decompose_tag;
pc->pc_conf_read = lca_conf_read;
pc->pc_conf_write = lca_conf_write;
}
void
lca_attach_hook(parent, self, pba)
struct device *parent, *self;
struct pcibus_attach_args *pba;
{
}
int
lca_bus_maxdevs(cpv, busno)
void *cpv;
int busno;
{
if (busno == 0)
return 16;
else
return 32;
}
pcitag_t
lca_make_tag(cpv, b, d, f)
void *cpv;
int b, d, f;
{
return (b << 16) | (d << 11) | (f << 8);
}
void
lca_decompose_tag(cpv, tag, bp, dp, fp)
void *cpv;
pcitag_t tag;
int *bp, *dp, *fp;
{
if (bp != NULL)
*bp = (tag >> 16) & 0xff;
if (dp != NULL)
*dp = (tag >> 11) & 0x1f;
if (fp != NULL)
*fp = (tag >> 8) & 0x7;
}
pcireg_t
lca_conf_read(cpv, tag, offset)
void *cpv;
pcitag_t tag;
int offset;
{
struct lca_config *lcp = cpv;
pcireg_t *datap, data;
int s, secondary, device, ba;
s = 0; /* XXX gcc -Wuninitialized */
/* secondary if bus # != 0 */
alpha_pci_decompose_tag(&lcp->lc_pc, tag, &secondary, &device, 0);
if (secondary) {
s = splhigh();
alpha_mb();
REGVAL(LCA_IOC_CONF) = 0x01;
alpha_mb();
} else {
/*
* on the LCA, must frob the tag used for
* devices on the primary bus, in the same ways
* as is used by type 1 configuration cycles
* on PCs.
*/
tag = (1 << (device + 11)) | (tag & 0x7ff);
}
datap = (pcireg_t *)ALPHA_PHYS_TO_K0SEG(LCA_PCI_CONF |
tag << 5UL | /* XXX */
(offset & ~0x03) << 5 | /* XXX */
0 << 5 | /* XXX */
0x3 << 3); /* XXX */
data = (pcireg_t)-1;
if (!(ba = badaddr(datap, sizeof *datap)))
data = *datap;
if (secondary) {
alpha_mb();
REGVAL(LCA_IOC_CONF) = 0x00;
alpha_mb();
splx(s);
}
#if 0
printf("lca_conf_read: tag 0x%lx, reg 0x%lx -> %x @ %p%s\n", tag, reg,
data, datap, ba ? " (badaddr)" : "");
#endif
return data;
}
void
lca_conf_write(cpv, tag, offset, data)
void *cpv;
pcitag_t tag;
int offset;
pcireg_t data;
{
struct lca_config *lcp = cpv;
pcireg_t *datap;
int s, secondary, device;
s = 0; /* XXX gcc -Wuninitialized */
/* secondary if bus # != 0 */
alpha_pci_decompose_tag(&lcp->lc_pc, tag, &secondary, &device, 0);
if (secondary) {
s = splhigh();
alpha_mb();
REGVAL(LCA_IOC_CONF) = 0x01;
alpha_mb();
} else {
/*
* on the LCA, must frob the tag used for
* devices on the primary bus, in the same ways
* as is used by type 1 configuration cycles
* on PCs.
*/
tag = (1 << (device + 11)) | (tag & 0x7ff);
}
datap = (pcireg_t *)ALPHA_PHYS_TO_K0SEG(LCA_PCI_CONF |
tag << 5UL | /* XXX */
(offset & ~0x03) << 5 | /* XXX */
0 << 5 | /* XXX */
0x3 << 3); /* XXX */
*datap = data;
if (secondary) {
alpha_mb();
REGVAL(LCA_IOC_CONF) = 0x00;
alpha_mb();
splx(s);
}
#if 0
printf("lca_conf_write: tag 0x%lx, reg 0x%lx -> 0x%x @ %p\n", tag,
reg, data, datap);
#endif
}
|
