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authorAlexandre Bounine <alexandre.bounine@idt.com>2013-07-04 02:08:56 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2013-07-04 03:08:05 +0400
commitfdf90abc00979fb2d61dbdba9e855200e236142b (patch)
tree7df15a7dc12fd6d85183b8ff147572e762eff272 /drivers/rapidio
parent94d9bd4576fcd340c344bffbbe0526227535a95f (diff)
downloadlinux-fdf90abc00979fb2d61dbdba9e855200e236142b.tar.xz
rapidio: add modular build option for the subsystem core
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>
Diffstat (limited to 'drivers/rapidio')
-rw-r--r--drivers/rapidio/Makefile4
-rw-r--r--drivers/rapidio/rio.c27
2 files changed, 17 insertions, 14 deletions
diff --git a/drivers/rapidio/Makefile b/drivers/rapidio/Makefile
index 3036702ffe8b..6271ada6993f 100644
--- a/drivers/rapidio/Makefile
+++ b/drivers/rapidio/Makefile
@@ -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/
diff --git a/drivers/rapidio/rio.c b/drivers/rapidio/rio.c
index 2054b6208823..f4f30af2df68 100644
--- a/drivers/rapidio/rio.c
+++ b/drivers/rapidio/rio.c
@@ -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 @@ no_disc:
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;