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
|
/*
* The PCI Library -- FreeBSD /dev/pci access
*
* Copyright (c) 1999 Jari Kirma <kirma@cs.hut.fi>
* Updated in 2003 by Samy Al Bahra <samy@kerneled.com>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <osreldate.h>
#include <stdint.h>
#ifdef __FreeBSD_kernel_version
# ifndef __FreeBSD_version
# define __FreeBSD_version __FreeBSD_kernel_version
# endif
#endif
#if __FreeBSD_version < 430000 && !defined(__DragonFly__)
# include <pci/pcivar.h>
# include <pci/pci_ioctl.h>
#else
# include <sys/pciio.h>
#endif
#include "internal.h"
static void
fbsd_config(struct pci_access *a)
{
pci_define_param(a, "fbsd.path", PCI_PATH_FBSD_DEVICE, "Path to the FreeBSD PCI device");
}
static int
fbsd_detect(struct pci_access *a)
{
char *name = pci_get_param(a, "fbsd.path");
if (access(name, R_OK))
{
a->warning("Cannot open %s", name);
return 0;
}
a->debug("...using %s", name);
return 1;
}
static void
fbsd_init(struct pci_access *a)
{
char *name = pci_get_param(a, "fbsd.path");
a->fd = open(name, O_RDWR, 0);
if (a->fd < 0)
a->error("fbsd_init: %s open failed", name);
}
static void
fbsd_cleanup(struct pci_access *a)
{
close(a->fd);
}
static int
fbsd_read(struct pci_dev *d, int pos, byte *buf, int len)
{
struct pci_io pi;
if (!(len == 1 || len == 2 || len == 4))
return pci_generic_block_read(d, pos, buf, len);
if (pos >= 256)
return 0;
#if __FreeBSD_version >= 700053
pi.pi_sel.pc_domain = d->domain;
#endif
pi.pi_sel.pc_bus = d->bus;
pi.pi_sel.pc_dev = d->dev;
pi.pi_sel.pc_func = d->func;
pi.pi_reg = pos;
pi.pi_width = len;
if (ioctl(d->access->fd, PCIOCREAD, &pi) < 0)
{
if (errno == ENODEV)
return 0;
d->access->error("fbsd_read: ioctl(PCIOCREAD) failed: %s", strerror(errno));
}
switch (len)
{
case 1:
buf[0] = (u8) pi.pi_data;
break;
case 2:
((u16 *) buf)[0] = cpu_to_le16((u16) pi.pi_data);
break;
case 4:
((u32 *) buf)[0] = cpu_to_le32((u32) pi.pi_data);
break;
}
return 1;
}
static int
fbsd_write(struct pci_dev *d, int pos, byte *buf, int len)
{
struct pci_io pi;
if (!(len == 1 || len == 2 || len == 4))
return pci_generic_block_write(d, pos, buf, len);
if (pos >= 256)
return 0;
#if __FreeBSD_version >= 700053
pi.pi_sel.pc_domain = d->domain;
#endif
pi.pi_sel.pc_bus = d->bus;
pi.pi_sel.pc_dev = d->dev;
pi.pi_sel.pc_func = d->func;
pi.pi_reg = pos;
pi.pi_width = len;
switch (len)
{
case 1:
pi.pi_data = buf[0];
break;
case 2:
pi.pi_data = le16_to_cpu(((u16 *) buf)[0]);
break;
case 4:
pi.pi_data = le32_to_cpu(((u32 *) buf)[0]);
break;
}
if (ioctl(d->access->fd, PCIOCWRITE, &pi) < 0)
{
if (errno == ENODEV)
return 0;
d->access->error("fbsd_write: ioctl(PCIOCWRITE) failed: %s", strerror(errno));
}
return 1;
}
struct pci_methods pm_fbsd_device = {
"fbsd-device",
"FreeBSD /dev/pci device",
fbsd_config,
fbsd_detect,
fbsd_init,
fbsd_cleanup,
pci_generic_scan,
pci_generic_fill_info,
fbsd_read,
fbsd_write,
NULL, /* dev_init */
NULL /* dev_cleanup */
};
|
