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rapidio: modify mport ID assignment

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Changes mport ID and host destination ID assignment to implement unified
method common to all mport drivers.  Makes "riohdid=" kernel command line
parameter common for all architectures with support for more that one host
destination ID assignment.

Signed-off-by: Alexandre Bounine <[email protected]>
Cc: Kumar Gala <[email protected]>
Cc: Matt Porter <[email protected]>
Cc: Li Yang <[email protected]>
Cc: Thomas Moll <[email protected]>
Cc: Micha Nelissen <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Alexandre Bounine 2011-03-23 16:43:05 -07:00 • committed by Linus Torvalds
commit 569fccb6b4
3 changed files with 27 additions and 25 deletions
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26
drivers/rapidio/rio.c
View file

@ -32,6 +32,7 @@
#include "rio.h"
static LIST_HEAD(rio_mports);
static unsigned char next_portid;
/**
* rio_local_get_device_id - Get the base/extended device id for a port
@ -1164,8 +1165,33 @@ int __devinit rio_init_mports(void)
device_initcall_sync(rio_init_mports);
static int hdids[RIO_MAX_MPORTS + 1];
static int rio_get_hdid(int index)
{
if (!hdids[0] || hdids[0] <= index || index >= RIO_MAX_MPORTS)
return -1;
return hdids[index + 1];
}
static int rio_hdid_setup(char *str)
{
(void)get_options(str, ARRAY_SIZE(hdids), hdids);
return 1;
}
__setup("riohdid=", rio_hdid_setup);
void rio_register_mport(struct rio_mport *port)
{
if (next_portid >= RIO_MAX_MPORTS) {
pr_err("RIO: reached specified max number of mports\n");
return;
}
port->id = next_portid++;
port->host_deviceid = rio_get_hdid(port->id);
list_add_tail(&port->node, &rio_mports);
}