@@ -46,7 +46,6 @@ static void rio_init_em(struct rio_dev *rdev);
DEFINE_SPINLOCK(rio_global_list_lock);
static int next_destid = 0;
-static int next_switchid = 0;
static int next_net = 0;
static int next_comptag = 1;
@@ -438,6 +437,10 @@ static struct rio_dev __devinit *rio_setup_device(struct rio_net *net,
rio_mport_write_config_32(port, destid, hopcount,
RIO_COMPONENT_TAG_CSR, next_comptag);
rdev->comp_tag = next_comptag++;
+ } else {
+ rio_mport_read_config_32(port, destid, hopcount,
+ RIO_COMPONENT_TAG_CSR,
+ &rdev->comp_tag);
}
if (rio_device_has_destid(port, rdev->src_ops, rdev->dst_ops)) {
@@ -461,7 +464,7 @@ static struct rio_dev __devinit *rio_setup_device(struct rio_net *net,
/* If a PE has both switch and other functions, show it as a switch */
if (rio_is_switch(rdev)) {
rswitch = rdev->rswitch;
- rswitch->switchid = next_switchid;
+ rswitch->switchid = rdev->comp_tag & RIO_CTAG_UDEVID;
rswitch->port_ok = 0;
rswitch->route_table = kzalloc(sizeof(u8)*
RIO_MAX_ROUTE_ENTRIES(port->sys_size),
@@ -816,7 +819,6 @@ static int __devinit rio_enum_peer(struct rio_net *net, struct rio_mport *port,
return -1;
if (rio_is_switch(rdev)) {
- next_switchid++;
sw_inport = RIO_GET_PORT_NUM(rdev->swpinfo);
rio_route_add_entry(rdev, RIO_GLOBAL_TABLE,
port->host_deviceid, sw_inport, 0);
@@ -964,8 +966,6 @@ rio_disc_peer(struct rio_net *net, struct rio_mport *port, u16 destid,
return -1;
if (rio_is_switch(rdev)) {
- next_switchid++;
-
/* Associated destid is how we accessed this switch */
rdev->destid = destid;
Change the way how switchid value is set. Local counter variable does not provide unified way to identify switch devices in a system with multiple processors. Using local counter leads to the situation when the same RIO switch has different switch ID for each processor. Replacing local counter with unique portion of the Component Tag provides unified reference to the switch by every processor in the system. Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com> Cc: Kumar Gala <galak@kernel.crashing.org> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Li Yang <leoli@freescale.com> Cc: Thomas Moll <thomas.moll@sysgo.com> Cc: Micha Nelissen <micha@neli.hopto.org> --- drivers/rapidio/rio-scan.c | 10 +++++----- 1 files changed, 5 insertions(+), 5 deletions(-)