[PATCH -mm 3/5] RapidIO: Modify initialization of switch operations

From: Alexandre Bounine
Date: Mon May 03 2010 - 11:48:51 EST

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Modified the way how RapidIO switch operations are declared.
Multiple assignments through the linker script replaced by single
initialization call.

Signed-off-by: Alexandre Bounine <alexandre.bounine@xxxxxxx>
Cc: Matt Porter <mporter@xxxxxxxxxxxxxxxxxxx>
Cc: Li Yang <leoli@xxxxxxxxxxxxx>
Cc: Kumar Gala <galak@xxxxxxxxxxxxxxxxxxx>
Cc: Thomas Moll <thomas.moll@xxxxxxxxx>
---
drivers/rapidio/rio-scan.c | 49 ++++++++------------------------
drivers/rapidio/rio.h | 56 ++++++++++---------------------------
drivers/rapidio/switches/idtcps.c | 27 +++++++++++++----
drivers/rapidio/switches/tsi500.c | 18 +++++++++++-
drivers/rapidio/switches/tsi568.c | 20 +++++++++++--
drivers/rapidio/switches/tsi57x.c | 31 ++++++++++++++------
include/asm-generic/vmlinux.lds.h | 9 ++----
include/linux/rio.h | 35 ++++-------------------
8 files changed, 111 insertions(+), 134 deletions(-)

diff --git a/drivers/rapidio/rio-scan.c b/drivers/rapidio/rio-scan.c
index 1faa1a5..5664321 100644
--- a/drivers/rapidio/rio-scan.c
+++ b/drivers/rapidio/rio-scan.c
@@ -246,24 +246,24 @@ static int rio_is_switch(struct rio_dev *rdev)
}

/**
- * rio_route_set_ops- Sets routing operations for a particular vendor switch
+ * rio_switch_init - Sets switch operations for a particular vendor switch
* @rdev: RIO device
+ * @do_enum: Enumeration/Discovery mode flag
*
- * Searches the RIO route ops table for known switch types. If the vid
- * and did match a switch table entry, then set the add_entry() and
- * get_entry() ops to the table entry values.
+ * Searches the RIO switch ops table for known switch types. If the vid
+ * and did match a switch table entry, then call switch initialization
+ * routine to setup switch-specific routines.
*/
-static void rio_route_set_ops(struct rio_dev *rdev)
+static void rio_switch_init(struct rio_dev *rdev, int do_enum)
{
- struct rio_route_ops *cur = __start_rio_route_ops;
- struct rio_route_ops *end = __end_rio_route_ops;
+ struct rio_switch_ops *cur = __start_rio_switch_ops;
+ struct rio_switch_ops *end = __end_rio_switch_ops;

while (cur < end) {
if ((cur->vid == rdev->vid) && (cur->did == rdev->did)) {
- pr_debug("RIO: adding routing ops for %s\n", rio_name(rdev));
- rdev->rswitch->add_entry = cur->add_hook;
- rdev->rswitch->get_entry = cur->get_hook;
- rdev->rswitch->clr_table = cur->clr_hook;
+ pr_debug("RIO: calling init routine for %s\n",
+ rio_name(rdev));
+ cur->init_hook(rdev, do_enum);
break;
}
cur++;
@@ -283,30 +283,6 @@ static void rio_route_set_ops(struct rio_dev *rdev)
}

/**
- * rio_em_set_ops- Sets Error Managment operations for a particular vendor switch
- * @rdev: RIO device
- *
- * Searches the RIO EM ops table for known switch types. If the vid
- * and did match a switch table entry, then set the em_init() and
- * em_handle() ops to the table entry values.
- */
-static void rio_em_set_ops(struct rio_dev *rdev)
-{
- struct rio_em_ops *cur = __start_rio_em_ops;
- struct rio_em_ops *end = __end_rio_em_ops;
-
- while (cur < end) {
- if ((cur->vid == rdev->vid) && (cur->did == rdev->did)) {
- pr_debug("RIO: adding EM ops for %s\n", rio_name(rdev));
- rdev->rswitch->em_init = cur->init_hook;
- rdev->rswitch->em_handle = cur->handler_hook;
- break;
- }
- cur++;
- }
-}
-
-/**
* rio_add_device- Adds a RIO device to the device model
* @rdev: RIO device
*
@@ -484,8 +460,7 @@ static struct rio_dev __devinit *rio_setup_device(struct rio_net *net,
rdev->rswitch = rswitch;
dev_set_name(&rdev->dev, "%02x:s:%04x", rdev->net->id,
rdev->rswitch->switchid);
- rio_route_set_ops(rdev);
- rio_em_set_ops(rdev);
+ rio_switch_init(rdev, do_enum);

if (do_enum && rdev->rswitch->clr_table)
rdev->rswitch->clr_table(port, destid, hopcount,
diff --git a/drivers/rapidio/rio.h b/drivers/rapidio/rio.h
index 2f628ce..f27b7a9 100644
--- a/drivers/rapidio/rio.h
+++ b/drivers/rapidio/rio.h
@@ -39,55 +39,29 @@ extern int rio_set_port_lockout(struct rio_dev *rdev, u32 pnum, int lock);
extern struct device_attribute rio_dev_attrs[];
extern spinlock_t rio_global_list_lock;

-extern struct rio_route_ops __start_rio_route_ops[];
-extern struct rio_route_ops __end_rio_route_ops[];
+extern struct rio_switch_ops __start_rio_switch_ops[];
+extern struct rio_switch_ops __end_rio_switch_ops[];

/* Helpers internal to the RIO core code */
-#define DECLARE_RIO_ROUTE_SECTION(section, name, vid, did, add_hook, get_hook, clr_hook) \
- static const struct rio_route_ops __rio_route_##name __used \
- __section(section) = { vid, did, add_hook, get_hook, clr_hook };
+#define DECLARE_RIO_SWITCH_SECTION(section, name, vid, did, init_hook) \
+ static const struct rio_switch_ops __rio_switch_##name __used \
+ __section(section) = { vid, did, init_hook };

/**
- * DECLARE_RIO_ROUTE_OPS - Registers switch routing operations
+ * DECLARE_RIO_SWITCH_INIT - Registers switch initialization routine
* @vid: RIO vendor ID
* @did: RIO device ID
- * @add_hook: Callback that adds a route entry
- * @get_hook: Callback that gets a route entry
+ * @init_hook: Callback that performs switch-specific initialization
*
- * Manipulating switch route tables in RIO is switch specific. This
- * registers a switch by vendor and device ID with two callbacks for
- * modifying and retrieving route entries in a switch. A &struct
- * rio_route_ops is initialized with the ops and placed into a
- * RIO-specific kernel section.
+ * Manipulating switch route tables and error management in RIO
+ * is switch specific. This registers a switch by vendor and device ID with
+ * initialization callback for setting up switch operations and (if required)
+ * hardware initialization. A &struct rio_switch_ops is initialized with
+ * pointer to the init routine and placed into a RIO-specific kernel section.
*/
-#define DECLARE_RIO_ROUTE_OPS(vid, did, add_hook, get_hook, clr_hook) \
- DECLARE_RIO_ROUTE_SECTION(.rio_route_ops, vid##did, \
- vid, did, add_hook, get_hook, clr_hook)
+#define DECLARE_RIO_SWITCH_INIT(vid, did, init_hook) \
+ DECLARE_RIO_SWITCH_SECTION(.rio_switch_ops, vid##did, \
+ vid, did, init_hook)

#define RIO_GET_DID(size, x) (size ? (x & 0xffff) : ((x & 0x00ff0000) >> 16))
#define RIO_SET_DID(size, x) (size ? (x & 0xffff) : ((x & 0x000000ff) << 16))
-
-/*
- * RapidIO Error Management
- */
-extern struct rio_em_ops __start_rio_em_ops[];
-extern struct rio_em_ops __end_rio_em_ops[];
-
-/* Helpers internal to the RIO core code */
-#define DECLARE_RIO_EM_SECTION(section, name, vid, did, init_hook, em_hook) \
- static const struct rio_em_ops __rio_em_##name __used \
- __section(section) = { vid, did, init_hook, em_hook };
-
-/**
- * DECLARE_RIO_EM_OPS - Registers switch EM operations
- * @vid: RIO vendor ID
- * @did: RIO device ID
- * @init_hook: Callback that initializes device specific EM
- * @em_hook: Callback that handles device specific EM
- *
- * A &struct rio_em_ops is initialized with the ops and placed into a
- * RIO-specific kernel section.
- */
-#define DECLARE_RIO_EM_OPS(vid, did, init_hook, em_hook) \
- DECLARE_RIO_EM_SECTION(.rio_em_ops, vid##did, \
- vid, did, init_hook, em_hook)
diff --git a/drivers/rapidio/switches/idtcps.c b/drivers/rapidio/switches/idtcps.c
index 7e3d032..46e6630 100644
--- a/drivers/rapidio/switches/idtcps.c
+++ b/drivers/rapidio/switches/idtcps.c
@@ -1,7 +1,8 @@
/*
* IDT CPS RapidIO switches support
*
- * Copyright 2009 Integrated Device Technology, Inc.
+ * Copyright 2009-2010 Integrated Device Technology, Inc.
+ * Alexandre Bounine <alexandre.bounine@xxxxxxx>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
@@ -81,9 +82,21 @@ idtcps_route_clr_table(struct rio_mport *mport, u16 destid, u8 hopcount,
return 0;
}

-DECLARE_RIO_ROUTE_OPS(RIO_VID_IDT, RIO_DID_IDTCPS6Q, idtcps_route_add_entry, idtcps_route_get_entry, idtcps_route_clr_table);
-DECLARE_RIO_ROUTE_OPS(RIO_VID_IDT, RIO_DID_IDTCPS8, idtcps_route_add_entry, idtcps_route_get_entry, idtcps_route_clr_table);
-DECLARE_RIO_ROUTE_OPS(RIO_VID_IDT, RIO_DID_IDTCPS10Q, idtcps_route_add_entry, idtcps_route_get_entry, idtcps_route_clr_table);
-DECLARE_RIO_ROUTE_OPS(RIO_VID_IDT, RIO_DID_IDTCPS12, idtcps_route_add_entry, idtcps_route_get_entry, idtcps_route_clr_table);
-DECLARE_RIO_ROUTE_OPS(RIO_VID_IDT, RIO_DID_IDTCPS16, idtcps_route_add_entry, idtcps_route_get_entry, idtcps_route_clr_table);
-DECLARE_RIO_ROUTE_OPS(RIO_VID_IDT, RIO_DID_IDT70K200, idtcps_route_add_entry, idtcps_route_get_entry, idtcps_route_clr_table);
+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->em_init = NULL;
+ rdev->rswitch->em_handle = NULL;
+
+ return 0;
+}
+
+DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS6Q, idtcps_switch_init);
+DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS8, idtcps_switch_init);
+DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS10Q, idtcps_switch_init);
+DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS12, idtcps_switch_init);
+DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS16, idtcps_switch_init);
+DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDT70K200, idtcps_switch_init);
diff --git a/drivers/rapidio/switches/tsi500.c b/drivers/rapidio/switches/tsi500.c
index ae553bb..65b865d 100644
--- a/drivers/rapidio/switches/tsi500.c
+++ b/drivers/rapidio/switches/tsi500.c
@@ -1,6 +1,10 @@
/*
* RapidIO Tsi500 switch support
*
+ * Copyright 2009-2010 Integrated Device Technology, Inc.
+ * Alexandre Bounine <alexandre.bounine@xxxxxxx>
+ * - Modified switch operations initialization.
+ *
* Copyright 2005 MontaVista Software, Inc.
* Matt Porter <mporter@xxxxxxxxxxxxxxxxxxx>
*
@@ -57,4 +61,16 @@ tsi500_route_get_entry(struct rio_mport *mport, u16 destid, u8 hopcount, u16 tab
return ret;
}

-DECLARE_RIO_ROUTE_OPS(RIO_VID_TUNDRA, RIO_DID_TSI500, tsi500_route_add_entry, tsi500_route_get_entry, NULL);
+static int tsi500_switch_init(struct rio_dev *rdev, int do_enum)
+{
+ pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev));
+ rdev->rswitch->add_entry = tsi500_route_add_entry;
+ rdev->rswitch->get_entry = tsi500_route_get_entry;
+ rdev->rswitch->clr_table = NULL;
+ rdev->rswitch->em_init = NULL;
+ rdev->rswitch->em_handle = NULL;
+
+ return 0;
+}
+
+DECLARE_RIO_SWITCH_INIT(RIO_VID_TUNDRA, RIO_DID_TSI500, tsi500_switch_init);
diff --git a/drivers/rapidio/switches/tsi568.c b/drivers/rapidio/switches/tsi568.c
index 905cf9c..322840d 100644
--- a/drivers/rapidio/switches/tsi568.c
+++ b/drivers/rapidio/switches/tsi568.c
@@ -2,6 +2,10 @@
* RapidIO Tsi568 switch support
*
* Copyright 2009-2010 Integrated Device Technology, Inc.
+ * Alexandre Bounine <alexandre.bounine@xxxxxxx>
+ * - Added EM support
+ * - Modified switch operations initialization.
+ *
* Copyright 2005 MontaVista Software, Inc.
* Matt Porter <mporter@xxxxxxxxxxxxxxxxxxx>
*
@@ -106,8 +110,6 @@ tsi568_route_clr_table(struct rio_mport *mport, u16 destid, u8 hopcount,
return 0;
}

-DECLARE_RIO_ROUTE_OPS(RIO_VID_TUNDRA, RIO_DID_TSI568, tsi568_route_add_entry, tsi568_route_get_entry, tsi568_route_clr_table);
-
static int
tsi568_em_init(struct rio_dev *rdev)
{
@@ -127,4 +129,16 @@ tsi568_em_init(struct rio_dev *rdev)
return 0;
}

-DECLARE_RIO_EM_OPS(RIO_VID_TUNDRA, RIO_DID_TSI568, tsi568_em_init, NULL);
+static int tsi568_switch_init(struct rio_dev *rdev, int do_enum)
+{
+ pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev));
+ 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->em_init = tsi568_em_init;
+ rdev->rswitch->em_handle = NULL;
+
+ return 0;
+}
+
+DECLARE_RIO_SWITCH_INIT(RIO_VID_TUNDRA, RIO_DID_TSI568, tsi568_switch_init);
diff --git a/drivers/rapidio/switches/tsi57x.c b/drivers/rapidio/switches/tsi57x.c
index 23040b9..2e902d3 100644
--- a/drivers/rapidio/switches/tsi57x.c
+++ b/drivers/rapidio/switches/tsi57x.c
@@ -1,7 +1,11 @@
/*
* RapidIO Tsi57x switch family support
*
- * Copyright 2009 Integrated Device Technology, Inc.
+ * Copyright 2009-2010 Integrated Device Technology, Inc.
+ * Alexandre Bounine <alexandre.bounine@xxxxxxx>
+ * - Added EM support
+ * - Modified switch operations initialization.
+ *
* Copyright 2005 MontaVista Software, Inc.
* Matt Porter <mporter@xxxxxxxxxxxxxxxxxxx>
*
@@ -108,11 +112,6 @@ tsi57x_route_clr_table(struct rio_mport *mport, u16 destid, u8 hopcount,
return 0;
}

-DECLARE_RIO_ROUTE_OPS(RIO_VID_TUNDRA, RIO_DID_TSI572, tsi57x_route_add_entry, tsi57x_route_get_entry, tsi57x_route_clr_table);
-DECLARE_RIO_ROUTE_OPS(RIO_VID_TUNDRA, RIO_DID_TSI574, tsi57x_route_add_entry, tsi57x_route_get_entry, tsi57x_route_clr_table);
-DECLARE_RIO_ROUTE_OPS(RIO_VID_TUNDRA, RIO_DID_TSI577, tsi57x_route_add_entry, tsi57x_route_get_entry, tsi57x_route_clr_table);
-DECLARE_RIO_ROUTE_OPS(RIO_VID_TUNDRA, RIO_DID_TSI578, tsi57x_route_add_entry, tsi57x_route_get_entry, tsi57x_route_clr_table);
-
static int
tsi57x_em_init(struct rio_dev *rdev)
{
@@ -253,7 +252,19 @@ exit_es:
return 0;
}

-DECLARE_RIO_EM_OPS(RIO_VID_TUNDRA, RIO_DID_TSI572, tsi57x_em_init, tsi57x_em_handler);
-DECLARE_RIO_EM_OPS(RIO_VID_TUNDRA, RIO_DID_TSI574, tsi57x_em_init, tsi57x_em_handler);
-DECLARE_RIO_EM_OPS(RIO_VID_TUNDRA, RIO_DID_TSI577, tsi57x_em_init, tsi57x_em_handler);
-DECLARE_RIO_EM_OPS(RIO_VID_TUNDRA, RIO_DID_TSI578, tsi57x_em_init, tsi57x_em_handler);
+static int tsi57x_switch_init(struct rio_dev *rdev, int do_enum)
+{
+ pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev));
+ 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->em_init = tsi57x_em_init;
+ rdev->rswitch->em_handle = tsi57x_em_handler;
+
+ return 0;
+}
+
+DECLARE_RIO_SWITCH_INIT(RIO_VID_TUNDRA, RIO_DID_TSI572, tsi57x_switch_init);
+DECLARE_RIO_SWITCH_INIT(RIO_VID_TUNDRA, RIO_DID_TSI574, tsi57x_switch_init);
+DECLARE_RIO_SWITCH_INIT(RIO_VID_TUNDRA, RIO_DID_TSI577, tsi57x_switch_init);
+DECLARE_RIO_SWITCH_INIT(RIO_VID_TUNDRA, RIO_DID_TSI578, tsi57x_switch_init);
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 8f7c89b..ef779c6 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -248,12 +248,9 @@
\
/* RapidIO route ops */ \
.rio_ops : AT(ADDR(.rio_ops) - LOAD_OFFSET) { \
- VMLINUX_SYMBOL(__start_rio_route_ops) = .; \
- *(.rio_route_ops) \
- VMLINUX_SYMBOL(__end_rio_route_ops) = .; \
- VMLINUX_SYMBOL(__start_rio_em_ops) = .; \
- *(.rio_em_ops) \
- VMLINUX_SYMBOL(__end_rio_em_ops) = .; \
+ VMLINUX_SYMBOL(__start_rio_switch_ops) = .; \
+ *(.rio_switch_ops) \
+ VMLINUX_SYMBOL(__end_rio_switch_ops) = .; \
} \
\
TRACEDATA \
diff --git a/include/linux/rio.h b/include/linux/rio.h
index 4ec31f4..3d0ac93 100644
--- a/include/linux/rio.h
+++ b/include/linux/rio.h
@@ -320,40 +320,17 @@ struct rio_device_id {
};

/**
- * struct rio_route_ops - Per-switch route operations
+ * struct rio_switch_ops - Per-switch operations
* @vid: RIO vendor ID
* @did: RIO device ID
- * @add_hook: Callback that adds a route entry
- * @get_hook: Callback that gets a route entry
- * @clr_hook: Callback that clears a switch route table (may be NULL)
+ * @init_hook: Callback that performs switch device initialization
*
- * Defines the operations that are necessary to manipulate the route
- * tables for a particular RIO switch device.
+ * Defines the operations that are necessary to initialize/control
+ * a particular RIO switch device.
*/
-struct rio_route_ops {
+struct rio_switch_ops {
u16 vid, did;
- int (*add_hook) (struct rio_mport * mport, u16 destid, u8 hopcount,
- u16 table, u16 route_destid, u8 route_port);
- int (*get_hook) (struct rio_mport * mport, u16 destid, u8 hopcount,
- u16 table, u16 route_destid, u8 * route_port);
- int (*clr_hook) (struct rio_mport *mport, u16 destid, u8 hopcount,
- u16 table);
-};
-
-/**
- * struct rio_em_ops - Per-switch error management operations
- * @vid: RIO vendor ID
- * @did: RIO device ID
- * @init_hook: Switch specific error management initialization (may be NULL)
- * @handler_hook: Switch specific error management handler (may be NULL)
- *
- * Defines the operations that are necessary to initialize and handle
- * error management events for a particular RIO switch device.
- */
-struct rio_em_ops {
- u16 vid, did;
- int (*init_hook) (struct rio_dev *dev);
- int (*handler_hook) (struct rio_dev *dev, u8 swport);
+ int (*init_hook) (struct rio_dev *rdev, int do_enum);
};

union rio_pw_msg {
--
1.7.0.5

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