rapidio: add switch domain routines

Add switch specific domain routines required for 16-bit routing support in
switches with hierarchical implementation of routing tables.

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: Thomas Moll <thomas.moll@sysgo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 33 insertions, 0 deletions

diff --git a/drivers/rapidio/switches/idtcps.c b/drivers/rapidio/switches/idtcps.c
index 46e6630dacd3..73c3677e5ac6 100644
--- a/drivers/rapidio/switches/idtcps.c
+++ b/drivers/rapidio/switches/idtcps.c
@@ -17,6 +17,8 @@
 
 #define CPS_NO_ROUTE 0xdf
 
+#define IDTCPS_RIO_DOMAIN 0xf20020
+
 static int
 idtcps_route_add_entry(struct rio_mport *mport, u16 destid, u8 hopcount,
                        u16 table, u16 route_destid, u8 route_port)
@@ -82,12 +84,43 @@ idtcps_route_clr_table(struct rio_mport *mport, u16 destid, u8 hopcount,
         return 0;
 }
 
+static int
+idtcps_set_domain(struct rio_mport *mport, u16 destid, u8 hopcount,
+                       u8 sw_domain)
+{
+        /*
+         * Switch domain configuration operates only at global level
+         */
+        rio_mport_write_config_32(mport, destid, hopcount,
+                                  IDTCPS_RIO_DOMAIN, (u32)sw_domain);
+        return 0;
+}
+
+static int
+idtcps_get_domain(struct rio_mport *mport, u16 destid, u8 hopcount,
+                       u8 *sw_domain)
+{
+        u32 regval;
+
+        /*
+         * Switch domain configuration operates only at global level
+         */
+        rio_mport_read_config_32(mport, destid, hopcount,
+                                IDTCPS_RIO_DOMAIN, &regval);
+
+        *sw_domain = (u8)(regval & 0xff);
+
+        return 0;
+}
+
 static int idtcps_switch_init(struct rio_dev *rdev, int do_enum)
 {
         pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev));
         rdev->rswitch->add_entry = idtcps_route_add_entry;
         rdev->rswitch->get_entry = idtcps_route_get_entry;
         rdev->rswitch->clr_table = idtcps_route_clr_table;
+        rdev->rswitch->set_domain = idtcps_set_domain;
+        rdev->rswitch->get_domain = idtcps_get_domain;
         rdev->rswitch->em_init = NULL;
         rdev->rswitch->em_handle = NULL;