Annotation of embedaddon/pciutils/lib/fbsd-device.c, revision 1.1.1.1
1.1 misho 1: /*
2: * The PCI Library -- FreeBSD /dev/pci access
3: *
4: * Copyright (c) 1999 Jari Kirma <kirma@cs.hut.fi>
5: * Updated in 2003 by Samy Al Bahra <samy@kerneled.com>
6: *
7: * Can be freely distributed and used under the terms of the GNU GPL.
8: */
9:
10: #include <errno.h>
11: #include <fcntl.h>
12: #include <stdio.h>
13: #include <string.h>
14: #include <unistd.h>
15: #include <osreldate.h>
16: #include <stdint.h>
17:
18: #ifdef __FreeBSD_kernel_version
19: # ifndef __FreeBSD_version
20: # define __FreeBSD_version __FreeBSD_kernel_version
21: # endif
22: #endif
23:
24: #if __FreeBSD_version < 430000 && !defined(__DragonFly__)
25: # include <pci/pcivar.h>
26: # include <pci/pci_ioctl.h>
27: #else
28: # include <sys/pciio.h>
29: #endif
30:
31: #include "internal.h"
32:
33: static void
34: fbsd_config(struct pci_access *a)
35: {
36: pci_define_param(a, "fbsd.path", PCI_PATH_FBSD_DEVICE, "Path to the FreeBSD PCI device");
37: }
38:
39: static int
40: fbsd_detect(struct pci_access *a)
41: {
42: char *name = pci_get_param(a, "fbsd.path");
43:
44: if (access(name, R_OK))
45: {
46: a->warning("Cannot open %s", name);
47: return 0;
48: }
49: a->debug("...using %s", name);
50: return 1;
51: }
52:
53: static void
54: fbsd_init(struct pci_access *a)
55: {
56: char *name = pci_get_param(a, "fbsd.path");
57:
58: a->fd = open(name, O_RDWR, 0);
59: if (a->fd < 0)
60: a->error("fbsd_init: %s open failed", name);
61: }
62:
63: static void
64: fbsd_cleanup(struct pci_access *a)
65: {
66: close(a->fd);
67: }
68:
69: static int
70: fbsd_read(struct pci_dev *d, int pos, byte *buf, int len)
71: {
72: struct pci_io pi;
73:
74: if (!(len == 1 || len == 2 || len == 4))
75: return pci_generic_block_read(d, pos, buf, len);
76:
77: if (pos >= 256)
78: return 0;
79:
80: #if __FreeBSD_version >= 700053
81: pi.pi_sel.pc_domain = d->domain;
82: #endif
83: pi.pi_sel.pc_bus = d->bus;
84: pi.pi_sel.pc_dev = d->dev;
85: pi.pi_sel.pc_func = d->func;
86:
87: pi.pi_reg = pos;
88: pi.pi_width = len;
89:
90: if (ioctl(d->access->fd, PCIOCREAD, &pi) < 0)
91: {
92: if (errno == ENODEV)
93: return 0;
94: d->access->error("fbsd_read: ioctl(PCIOCREAD) failed: %s", strerror(errno));
95: }
96:
97: switch (len)
98: {
99: case 1:
100: buf[0] = (u8) pi.pi_data;
101: break;
102: case 2:
103: ((u16 *) buf)[0] = cpu_to_le16((u16) pi.pi_data);
104: break;
105: case 4:
106: ((u32 *) buf)[0] = cpu_to_le32((u32) pi.pi_data);
107: break;
108: }
109: return 1;
110: }
111:
112: static int
113: fbsd_write(struct pci_dev *d, int pos, byte *buf, int len)
114: {
115: struct pci_io pi;
116:
117: if (!(len == 1 || len == 2 || len == 4))
118: return pci_generic_block_write(d, pos, buf, len);
119:
120: if (pos >= 256)
121: return 0;
122:
123: #if __FreeBSD_version >= 700053
124: pi.pi_sel.pc_domain = d->domain;
125: #endif
126: pi.pi_sel.pc_bus = d->bus;
127: pi.pi_sel.pc_dev = d->dev;
128: pi.pi_sel.pc_func = d->func;
129:
130: pi.pi_reg = pos;
131: pi.pi_width = len;
132:
133: switch (len)
134: {
135: case 1:
136: pi.pi_data = buf[0];
137: break;
138: case 2:
139: pi.pi_data = le16_to_cpu(((u16 *) buf)[0]);
140: break;
141: case 4:
142: pi.pi_data = le32_to_cpu(((u32 *) buf)[0]);
143: break;
144: }
145:
146: if (ioctl(d->access->fd, PCIOCWRITE, &pi) < 0)
147: {
148: if (errno == ENODEV)
149: return 0;
150: d->access->error("fbsd_write: ioctl(PCIOCWRITE) failed: %s", strerror(errno));
151: }
152:
153: return 1;
154: }
155:
156: struct pci_methods pm_fbsd_device = {
157: "fbsd-device",
158: "FreeBSD /dev/pci device",
159: fbsd_config,
160: fbsd_detect,
161: fbsd_init,
162: fbsd_cleanup,
163: pci_generic_scan,
164: pci_generic_fill_info,
165: fbsd_read,
166: fbsd_write,
167: NULL, /* read_vpd */
168: NULL, /* dev_init */
169: NULL /* dev_cleanup */
170: };
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