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[cmdline] Add "pciscan" command to allow iteration over PCI devices

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Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown 2013-08-01 16:53:17 +01:00
parent 6d910559b3
commit b76885165e
3 changed files with 118 additions and 0 deletions
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3
src/config/config.c
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@ -260,6 +260,9 @@ REQUIRE_OBJECT ( sync_cmd );
#ifdef NSLOOKUP_CMD
REQUIRE_OBJECT ( nslookup_cmd );
#endif
#ifdef PCI_CMD
REQUIRE_OBJECT ( pci_cmd );
#endif
/*
* Drag in miscellaneous objects

1
src/config/general.h
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@ -129,6 +129,7 @@ FILE_LICENCE ( GPL2_OR_LATER );
//#define REBOOT_CMD /* Reboot command */
//#define POWEROFF_CMD /* Power off command */
//#define IMAGE_TRUST_CMD /* Image trust management commands */
//#define PCI_CMD /* PCI commands */
/*
* ROM-specific options

114
src/hci/commands/pci_cmd.c Normal file
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@ -0,0 +1,114 @@
/*
* 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.
*/
#include <stdio.h>
#include <getopt.h>
#include <ipxe/pci.h>
#include <ipxe/command.h>
#include <ipxe/parseopt.h>
FILE_LICENCE ( GPL2_OR_LATER );
/** @file
*
* PCI commands
*
*/
/** "pciscan" options */
struct pciscan_options {};
/** "pciscan" option list */
static struct option_descriptor pciscan_opts[] = {};
/** "pciscan" command descriptor */
static struct command_descriptor pciscan_cmd =
COMMAND_DESC ( struct pciscan_options, pciscan_opts, 1, 1,
"<setting>" );
/**
* "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;
/* Parse options */
if ( ( rc = parse_options ( argc, argv, &pciscan_cmd, &opts ) ) != 0 )
goto err_parse_options;
/* Parse setting name */
if ( ( rc = parse_autovivified_setting ( argv[optind],
&setting ) ) != 0 )
goto err_parse_setting;
/* 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++;
}
/* Find next existent PCI device */
if ( ( next = pci_find_next ( &pci, prev ) ) < 0 ) {
rc = next;
goto err_find_next;
}
/* 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;
/* 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;
}
err_store:
err_find_next:
err_parse_setting:
err_parse_options:
return rc;
}
/** PCI commands */
struct command pci_commands[] __command = {
{
.name = "pciscan",
.exec = pciscan_exec,
},
};