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rapidio: add modular build option for the subsystem core

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Add a configuration option to build RapidIO subsystem core code as a
loadable kernel module.  Currently this option is available only for
x86-based platforms, with the additional patch for PowerPC planned to be
provided later.

This patch replaces kernel command line parameter "riohdid=" with its
module-specific analog "rapidio.hdid=".

Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com>
Cc: Matt Porter <mporter@kernel.crashing.org>
Cc: Li Yang <leoli@freescale.com>
Cc: Kumar Gala <galak@kernel.crashing.org>
Cc: Andre van Herk <andre.van.herk@Prodrive.nl>
Cc: Micha Nelissen <micha.nelissen@Prodrive.nl>
Cc: Stef van Os <stef.van.os@Prodrive.nl>
Cc: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alexandre Bounine 2013-07-03 15:08:56 -07:00 committed by Linus Torvalds
parent 94d9bd4576
commit fdf90abc00
3 changed files with 19 additions and 16 deletions
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4
arch/x86/Kconfig
View file

@ -2259,11 +2259,11 @@ source "drivers/pcmcia/Kconfig"
source "drivers/pci/hotplug/Kconfig"
config RAPIDIO
bool "RapidIO support"
tristate "RapidIO support"
depends on PCI
default n
help
If you say Y here, the kernel will include drivers and
If enabled this option will include drivers and the core
infrastructure code to support RapidIO interconnect devices.
source "drivers/rapidio/Kconfig"

4
drivers/rapidio/Makefile
View file

@ -1,7 +1,9 @@
#
# Makefile for RapidIO interconnect services
#
obj-y += rio.o rio-access.o rio-driver.o rio-sysfs.o
obj-$(CONFIG_RAPIDIO) += rapidio.o
rapidio-y := rio.o rio-access.o rio-driver.o rio-sysfs.o
obj-$(CONFIG_RAPIDIO_ENUM_BASIC) += rio-scan.o
obj-$(CONFIG_RAPIDIO) += switches/

27
drivers/rapidio/rio.c
View file

@ -5,7 +5,7 @@
* Copyright 2005 MontaVista Software, Inc.
* Matt Porter <mporter@kernel.crashing.org>
*
* Copyright 2009 Integrated Device Technology, Inc.
* Copyright 2009 - 2013 Integrated Device Technology, Inc.
* Alex Bounine <alexandre.bounine@idt.com>
*
* This program is free software; you can redistribute it and/or modify it
@ -30,6 +30,17 @@
#include "rio.h"
MODULE_DESCRIPTION("RapidIO Subsystem Core");
MODULE_AUTHOR("Matt Porter <mporter@kernel.crashing.org>");
MODULE_AUTHOR("Alexandre Bounine <alexandre.bounine@idt.com>");
MODULE_LICENSE("GPL");
static int hdid[RIO_MAX_MPORTS];
static int ids_num;
module_param_array(hdid, int, &ids_num, 0);
MODULE_PARM_DESC(hdid,
"Destination ID assignment to local RapidIO controllers");
static LIST_HEAD(rio_devices);
static DEFINE_SPINLOCK(rio_global_list_lock);
@ -1860,24 +1871,14 @@ int rio_init_mports(void)
return 0;
}
static int hdids[RIO_MAX_MPORTS + 1];
static int rio_get_hdid(int index)
{
if (!hdids[0] || hdids[0] <= index || index >= RIO_MAX_MPORTS)
if (ids_num == 0 || ids_num <= index || index >= RIO_MAX_MPORTS)
return -1;
return hdids[index + 1];
return hdid[index];
}
static int rio_hdid_setup(char *str)
{
(void)get_options(str, ARRAY_SIZE(hdids), hdids);
return 1;
}
__setup("riohdid=", rio_hdid_setup);
int rio_register_mport(struct rio_mport *port)
{
struct rio_scan_node *scan = NULL;