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
214
215
216
217
218
219
220
|
/*-
* Copyright (c) 2000 Andrew Gallatin
* All rights reserved.
*
* 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 AUTHOR 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 AUTHOR 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.
*
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/malloc.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <machine/md_var.h>
#include <machine/bwx.h>
#include <sys/rman.h>
#include <pci/pcivar.h>
#include <pci/pcireg.h>
#include <alpha/pci/irongatereg.h>
#include <alpha/pci/irongatevar.h>
#include <alpha/pci/pcibus.h>
#include "alphapci_if.h"
#include "pcib_if.h"
#define KV(pa) ALPHA_PHYS_TO_K0SEG(pa)
static devclass_t pcib_devclass;
static int
irongate_pcib_probe(device_t dev)
{
device_set_desc(dev, "AMD 751 PCI host bus adapter");
pci_init_resources();
device_add_child(dev, "pci", 0);
/*
* XXX -- The SRM console doesn't properly initialize
* the AcerLabs M1533C southbridge. We must turn off 32-bit
* DMA support.
*/
if ((0x153310b9 == PCIB_READ_CONFIG(dev, 0, 7, 0,
PCIR_DEVVENDOR, 4))) {
u_int8_t value = PCIB_READ_CONFIG(dev, 0, 7, 0, 0x42, 1);
value &= ~0x40;
PCIB_WRITE_CONFIG(dev, 0, 7, 0, 0x42, 0, 1);
}
return 0;
}
static int
irongate_pcib_read_ivar(device_t dev, device_t child, int which, u_long *result)
{
switch (which) {
case PCIB_IVAR_BUS:
*result = 0;
return 0;
}
return ENOENT;
}
static void *
irongate_pcib_cvt_dense(device_t dev, vm_offset_t addr)
{
addr &= 0xffffffffUL;
return (void *) KV(addr | IRONGATE_MEM);
}
static void *
irongate_pcib_cvt_bwx(device_t dev, vm_offset_t addr)
{
addr &= 0xffffffffUL;
return (void *) KV(addr | IRONGATE_MEM);
}
static int
irongate_pcib_maxslots(device_t dev)
{
return 31;
}
static void
irongate_clear_abort(void)
{
alpha_mb();
alpha_pal_draina();
}
static int
irongate_check_abort(void)
{
alpha_pal_draina();
alpha_mb();
return 0;
}
#define IRONGATE_CFGADDR(b, s, f, r) \
KV(IRONGATE_CONF | ((b) << 16) | ((s) << 11) | ((f) << 8) | (r))
#define CFGREAD(b, s, f, r, width, type, op) do { \
vm_offset_t va; \
type data; \
va = IRONGATE_CFGADDR(b, s, f, r); \
irongate_clear_abort(); \
if (badaddr((caddr_t)va, width)) { \
irongate_check_abort(); \
return ~0; \
} \
data = ##op##(va); \
if (irongate_check_abort()) \
return ~0; \
return data; \
} while (0)
#define CFGWRITE(b, s, f, r, data, width, op) do { \
vm_offset_t va; \
va = IRONGATE_CFGADDR(b, s, f, r); \
irongate_clear_abort(); \
if (badaddr((caddr_t)va, width)) \
return; \
##op##(va, data); \
irongate_check_abort(); \
} while (0)
static u_int32_t
irongate_pcib_read_config(device_t dev, u_int b, u_int s, u_int f,
u_int reg, int width)
{
switch (width) {
case 1:
CFGREAD(b, s, f, reg, 1, u_int8_t, ldbu);
break;
case 2:
CFGREAD(b, s, f, reg, 2, u_int16_t, ldwu);
break;
case 4:
CFGREAD(b, s, f, reg, 4, u_int32_t, ldl);
}
return ~0;
}
static void
irongate_pcib_write_config(device_t dev, u_int b, u_int s, u_int f,
u_int reg, u_int32_t val, int width)
{
switch (width) {
case 1:
CFGWRITE(b, s, f, reg, val, 1, stb);
break;
case 2:
CFGWRITE(b, s, f, reg, val, 2, stw);
break;
case 4:
CFGWRITE(b, s, f, reg, val, 4, stl);
}
}
static device_method_t irongate_pcib_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, irongate_pcib_probe),
DEVMETHOD(device_attach, bus_generic_attach),
/* Bus interface */
DEVMETHOD(bus_print_child, bus_generic_print_child),
DEVMETHOD(bus_read_ivar, irongate_pcib_read_ivar),
DEVMETHOD(bus_alloc_resource, pci_alloc_resource),
DEVMETHOD(bus_release_resource, pci_release_resource),
DEVMETHOD(bus_activate_resource, pci_activate_resource),
DEVMETHOD(bus_deactivate_resource, pci_deactivate_resource),
DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
/* alphapci interface */
DEVMETHOD(alphapci_cvt_dense, irongate_pcib_cvt_dense),
DEVMETHOD(alphapci_cvt_bwx, irongate_pcib_cvt_bwx),
/* pcib interface */
DEVMETHOD(pcib_maxslots, irongate_pcib_maxslots),
DEVMETHOD(pcib_read_config, irongate_pcib_read_config),
DEVMETHOD(pcib_write_config, irongate_pcib_write_config),
DEVMETHOD(pcib_route_interrupt, alpha_pci_route_interrupt),
{ 0, 0 }
};
static driver_t irongate_pcib_driver = {
"pcib",
irongate_pcib_methods,
1,
};
DRIVER_MODULE(pcib, irongate, irongate_pcib_driver, pcib_devclass, 0, 0);
|
