[tcpip] Allow supported address families to be detected at runtime
[ipxe.git] / src / hci / commands / pci_cmd.c
1 /*
2 * Copyright (C) 2013 Michael Brown <mbrown@fensystems.co.uk>.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation; either version 2 of the
7 * License, or any later version.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
17 * 02110-1301, USA.
18 *
19 * You can also choose to distribute this program under the terms of
20 * the Unmodified Binary Distribution Licence (as given in the file
21 * COPYING.UBDL), provided that you have satisfied its requirements.
22 */
23
24 #include <stdio.h>
25 #include <getopt.h>
26 #include <ipxe/pci.h>
27 #include <ipxe/command.h>
28 #include <ipxe/parseopt.h>
29
30 FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
31
32 /** @file
33 *
34 * PCI commands
35 *
36 */
37
38 /** "pciscan" options */
39 struct pciscan_options {};
40
41 /** "pciscan" option list */
42 static struct option_descriptor pciscan_opts[] = {};
43
44 /** "pciscan" command descriptor */
45 static struct command_descriptor pciscan_cmd =
46 COMMAND_DESC ( struct pciscan_options, pciscan_opts, 1, 1,
47 "<setting>" );
48
49 /**
50 * "pciscan" command
51 *
52 * @v argc Argument count
53 * @v argv Argument list
54 * @ret rc Return status code
55 */
56 static int pciscan_exec ( int argc, char **argv ) {
57 struct pciscan_options opts;
58 struct named_setting setting;
59 struct pci_device pci;
60 unsigned long prev;
61 int next;
62 int len;
63 int rc;
64
65 /* Parse options */
66 if ( ( rc = parse_options ( argc, argv, &pciscan_cmd, &opts ) ) != 0 )
67 goto err_parse_options;
68
69 /* Parse setting name */
70 if ( ( rc = parse_autovivified_setting ( argv[optind],
71 &setting ) ) != 0 )
72 goto err_parse_setting;
73
74 /* Determine starting bus:dev.fn address */
75 if ( ( len = fetchn_setting ( setting.settings, &setting.setting,
76 NULL, &setting.setting, &prev ) ) < 0 ) {
77 /* Setting not yet defined: start searching from 00:00.0 */
78 prev = 0;
79 } else {
80 /* Setting is defined: start searching from next location */
81 prev++;
82 }
83
84 /* Find next existent PCI device */
85 if ( ( next = pci_find_next ( &pci, prev ) ) < 0 ) {
86 rc = next;
87 goto err_find_next;
88 }
89
90 /* Apply default type if necessary. Use ":uint16" rather than
91 * ":busdevfn" to allow for easy inclusion within a
92 * "${pci/${location}.x.y}" constructed setting.
93 */
94 if ( ! setting.setting.type )
95 setting.setting.type = &setting_type_uint16;
96
97 /* Store setting */
98 if ( ( rc = storen_setting ( setting.settings, &setting.setting,
99 next ) ) != 0 ) {
100 printf ( "Could not store \"%s\": %s\n",
101 setting.setting.name, strerror ( rc ) );
102 goto err_store;
103 }
104
105 err_store:
106 err_find_next:
107 err_parse_setting:
108 err_parse_options:
109 return rc;
110 }
111
112 /** PCI commands */
113 struct command pci_commands[] __command = {
114 {
115 .name = "pciscan",
116 .exec = pciscan_exec,
117 },
118 };