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[cmdline] Add "pciscan" command to allow iteration over PCI devices
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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/* | ||
* Copyright (C) 2013 Michael Brown <mbrown@fensystems.co.uk>. | ||
* | ||
* This program is free software; you can redistribute it and/or | ||
* modify it under the terms of the GNU General Public License as | ||
* published by the Free Software Foundation; either version 2 of the | ||
* License, or any later version. | ||
* | ||
* This program is distributed in the hope that it will be useful, but | ||
* WITHOUT ANY WARRANTY; without even the implied warranty of | ||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
* General Public License for more details. | ||
* | ||
* You should have received a copy of the GNU General Public License | ||
* along with this program; if not, write to the Free Software | ||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA | ||
* 02110-1301, USA. | ||
*/ | ||
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#include <stdio.h> | ||
#include <getopt.h> | ||
#include <ipxe/pci.h> | ||
#include <ipxe/command.h> | ||
#include <ipxe/parseopt.h> | ||
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FILE_LICENCE ( GPL2_OR_LATER ); | ||
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/** @file | ||
* | ||
* PCI commands | ||
* | ||
*/ | ||
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/** "pciscan" options */ | ||
struct pciscan_options {}; | ||
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/** "pciscan" option list */ | ||
static struct option_descriptor pciscan_opts[] = {}; | ||
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/** "pciscan" command descriptor */ | ||
static struct command_descriptor pciscan_cmd = | ||
COMMAND_DESC ( struct pciscan_options, pciscan_opts, 1, 1, | ||
"<setting>" ); | ||
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/** | ||
* "pciscan" command | ||
* | ||
* @v argc Argument count | ||
* @v argv Argument list | ||
* @ret rc Return status code | ||
*/ | ||
static int pciscan_exec ( int argc, char **argv ) { | ||
struct pciscan_options opts; | ||
struct named_setting setting; | ||
struct pci_device pci; | ||
unsigned long prev; | ||
int next; | ||
int len; | ||
int rc; | ||
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/* Parse options */ | ||
if ( ( rc = parse_options ( argc, argv, &pciscan_cmd, &opts ) ) != 0 ) | ||
goto err_parse_options; | ||
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/* Parse setting name */ | ||
if ( ( rc = parse_autovivified_setting ( argv[optind], | ||
&setting ) ) != 0 ) | ||
goto err_parse_setting; | ||
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/* Determine starting bus:dev.fn address */ | ||
if ( ( len = fetch_uint_setting ( setting.settings, &setting.setting, | ||
&prev ) ) < 0 ) { | ||
/* Setting not yet defined: start searching from 00:00.0 */ | ||
prev = 0; | ||
} else { | ||
/* Setting is defined: start searching from next location */ | ||
prev++; | ||
} | ||
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/* Find next existent PCI device */ | ||
if ( ( next = pci_find_next ( &pci, prev ) ) < 0 ) { | ||
rc = next; | ||
goto err_find_next; | ||
} | ||
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/* Apply default type if necessary. Use ":uint16" rather than | ||
* ":busdevfn" to allow for easy inclusion within a | ||
* "${pci/${location}.x.y}" constructed setting. | ||
*/ | ||
if ( ! setting.setting.type ) | ||
setting.setting.type = &setting_type_uint16; | ||
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/* Store setting */ | ||
if ( ( rc = storen_setting ( setting.settings, &setting.setting, | ||
next ) ) != 0 ) { | ||
printf ( "Could not store \"%s\": %s\n", | ||
setting.setting.name, strerror ( rc ) ); | ||
goto err_store; | ||
} | ||
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err_store: | ||
err_find_next: | ||
err_parse_setting: | ||
err_parse_options: | ||
return rc; | ||
} | ||
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/** PCI commands */ | ||
struct command pci_commands[] __command = { | ||
{ | ||
.name = "pciscan", | ||
.exec = pciscan_exec, | ||
}, | ||
}; |