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>

diff --git a/drivers/rapidio/switches/idtcps.c b/drivers/rapidio/switches/idtcps.c
index 46e6630..73c3677 100644 (file)
--- 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 65b865d..914eddd 100644 (file)
--- 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 322840d..f7fd789 100644 (file)
--- 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 2e902d3..d34df72 100644 (file)
--- 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;
 

diff --git a/include/linux/rio.h b/include/linux/rio.h
index 3d0ac93..19b5f22 100644 (file)
--- a/include/linux/rio.h
+++ b/include/linux/rio.h
@@ -238,6 +238,10 @@ struct rio_switch {
                          u16 table, u16 route_destid, u8 * route_port);
        int (*clr_table) (struct rio_mport *mport, u16 destid, u8 hopcount,
                          u16 table);
+       int (*set_domain) (struct rio_mport *mport, u16 destid, u8 hopcount,
+                          u8 sw_domain);
+       int (*get_domain) (struct rio_mport *mport, u16 destid, u8 hopcount,
+                          u8 *sw_domain);
        int (*em_init) (struct rio_dev *dev);
        int (*em_handle) (struct rio_dev *dev, u8 swport);
 };