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>

4 files changed, 82 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;
 
diff --git a/drivers/rapidio/switches/tsi500.c b/drivers/rapidio/switches/tsi500.c
index 65b865d64d34..914eddd5aa42 100644
--- a/drivers/rapidio/switches/tsi500.c
+++ b/drivers/rapidio/switches/tsi500.c
@@ -67,6 +67,8 @@ static int tsi500_switch_init(struct rio_dev *rdev, int do_enum)
         rdev->rswitch->add_entry = tsi500_route_add_entry;
         rdev->rswitch->get_entry = tsi500_route_get_entry;
         rdev->rswitch->clr_table = NULL;
+        rdev->rswitch->set_domain = NULL;
+        rdev->rswitch->get_domain = NULL;
         rdev->rswitch->em_init = NULL;
         rdev->rswitch->em_handle = NULL;
 
diff --git a/drivers/rapidio/switches/tsi568.c b/drivers/rapidio/switches/tsi568.c
index 322840d43832..f7fd7898606e 100644
--- a/drivers/rapidio/switches/tsi568.c
+++ b/drivers/rapidio/switches/tsi568.c
@@ -135,6 +135,8 @@ static int tsi568_switch_init(struct rio_dev *rdev, int do_enum)
         rdev->rswitch->add_entry = tsi568_route_add_entry;
         rdev->rswitch->get_entry = tsi568_route_get_entry;
         rdev->rswitch->clr_table = tsi568_route_clr_table;
+        rdev->rswitch->set_domain = NULL;
+        rdev->rswitch->get_domain = NULL;
         rdev->rswitch->em_init = tsi568_em_init;
         rdev->rswitch->em_handle = NULL;
 
diff --git a/drivers/rapidio/switches/tsi57x.c b/drivers/rapidio/switches/tsi57x.c
index 2e902d3e1abe..d34df722d95f 100644
--- a/drivers/rapidio/switches/tsi57x.c
+++ b/drivers/rapidio/switches/tsi57x.c
@@ -30,13 +30,17 @@
 #define SPP_ROUTE_CFG_PORT(n)   (0x11074 + 0x100*n)
 
 #define TSI578_SP_MODE(n)       (0x11004 + n*0x100)
+#define TSI578_SP_MODE_GLBL     0x10004
 #define  TSI578_SP_MODE_PW_DIS  0x08000000
+#define  TSI578_SP_MODE_LUT_512 0x01000000
 
 #define TSI578_SP_CTL_INDEP(n)  (0x13004 + n*0x100)
 #define TSI578_SP_LUT_PEINF(n)  (0x13010 + n*0x100)
 #define TSI578_SP_CS_TX(n)      (0x13014 + n*0x100)
 #define TSI578_SP_INT_STATUS(n) (0x13018 + n*0x100)
 
+#define TSI578_GLBL_ROUTE_BASE  0x10078
+
 static int
 tsi57x_route_add_entry(struct rio_mport *mport, u16 destid, u8 hopcount,
                        u16 table, u16 route_destid, u8 route_port)
@@ -113,6 +117,45 @@ tsi57x_route_clr_table(struct rio_mport *mport, u16 destid, u8 hopcount,
 }
 
 static int
+tsi57x_set_domain(struct rio_mport *mport, u16 destid, u8 hopcount,
+                       u8 sw_domain)
+{
+        u32 regval;
+
+        /*
+         * Switch domain configuration operates only at global level
+         */
+
+        /* Turn off flat (LUT_512) mode */
+        rio_mport_read_config_32(mport, destid, hopcount,
+                                 TSI578_SP_MODE_GLBL, &regval);
+        rio_mport_write_config_32(mport, destid, hopcount, TSI578_SP_MODE_GLBL,
+                                  regval & ~TSI578_SP_MODE_LUT_512);
+        /* Set switch domain base */
+        rio_mport_write_config_32(mport, destid, hopcount,
+                                  TSI578_GLBL_ROUTE_BASE,
+                                  (u32)(sw_domain << 24));
+        return 0;
+}
+
+static int
+tsi57x_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,
+                                TSI578_GLBL_ROUTE_BASE, &regval);
+
+        *sw_domain = (u8)(regval >> 24);
+
+        return 0;
+}
+
+static int
 tsi57x_em_init(struct rio_dev *rdev)
 {
         struct rio_mport *mport = rdev->net->hport;
@@ -258,6 +301,8 @@ static int tsi57x_switch_init(struct rio_dev *rdev, int do_enum)
         rdev->rswitch->add_entry = tsi57x_route_add_entry;
         rdev->rswitch->get_entry = tsi57x_route_get_entry;
         rdev->rswitch->clr_table = tsi57x_route_clr_table;
+        rdev->rswitch->set_domain = tsi57x_set_domain;
+        rdev->rswitch->get_domain = tsi57x_get_domain;
         rdev->rswitch->em_init = tsi57x_em_init;
         rdev->rswitch->em_handle = tsi57x_em_handler;