rapidio: convert switch drivers to modules

Rework RapidIO switch drivers to add an option to build them as loadable
kernel modules.

This patch removes RapidIO-specific vmlinux section and converts switch
drivers to be compatible with LDM driver registration method.  To simplify
registration of device-specific callback routines this patch introduces
rio_switch_ops data structure.  The sw_sysfs() callback is removed from
the list of device-specific operations because under the new structure its
functions can be handled by switch driver's probe() and remove() routines.

If a specific switch device driver is not loaded the RapidIO subsystem
core will use default standard-based operations to configure a switch.
Because the current implementation of RapidIO enumeration/discovery method
relies on availability of device-specific operations for error management,
switch device drivers must be loaded before the RapidIO
enumeration/discovery starts.

This patch also moves several common routines from enumeration/discovery
module into the RapidIO core code to make switch-specific operations
accessible to all components of RapidIO subsystem.

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: Andre van Herk <andre.van.herk@Prodrive.nl>
Cc: Micha Nelissen <micha.nelissen@Prodrive.nl>
Cc: Stef van Os <stef.van.os@Prodrive.nl>
Cc: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alexandre Bounine 2013-07-03 15:08:50 -07:00 committed by Linus Torvalds
parent 36f0efbbe8
commit 2ec3ba69fa
12 changed files with 566 additions and 343 deletions

View File

@ -67,4 +67,9 @@ config RAPIDIO_ENUM_BASIC
endchoice
menu "RapidIO Switch drivers"
depends on RAPIDIO
source "drivers/rapidio/switches/Kconfig"
endmenu

View File

@ -406,6 +406,7 @@ static struct rio_dev *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++;
rdev->do_enum = true;
} else {
rio_mport_read_config_32(port, destid, hopcount,
RIO_COMPONENT_TAG_CSR,
@ -434,6 +435,7 @@ static struct rio_dev *rio_setup_device(struct rio_net *net,
rswitch = rdev->rswitch;
rswitch->switchid = rdev->comp_tag & RIO_CTAG_UDEVID;
rswitch->port_ok = 0;
spin_lock_init(&rswitch->lock);
rswitch->route_table = kzalloc(sizeof(u8)*
RIO_MAX_ROUTE_ENTRIES(port->sys_size),
GFP_KERNEL);
@ -445,11 +447,9 @@ static struct rio_dev *rio_setup_device(struct rio_net *net,
rswitch->route_table[rdid] = RIO_INVALID_ROUTE;
dev_set_name(&rdev->dev, "%02x:s:%04x", rdev->net->id,
rswitch->switchid);
rio_switch_init(rdev, do_enum);
if (do_enum && rswitch->clr_table)
rswitch->clr_table(port, destid, hopcount,
RIO_GLOBAL_TABLE);
if (do_enum)
rio_route_clr_table(rdev, RIO_GLOBAL_TABLE, 0);
list_add_tail(&rswitch->node, &net->switches);
@ -532,156 +532,6 @@ rio_sport_is_active(struct rio_mport *port, u16 destid, u8 hopcount, int sport)
return result & RIO_PORT_N_ERR_STS_PORT_OK;
}
/**
* rio_lock_device - Acquires host device lock for specified device
* @port: Master port to send transaction
* @destid: Destination ID for device/switch
* @hopcount: Hopcount to reach switch
* @wait_ms: Max wait time in msec (0 = no timeout)
*
* Attepts to acquire host device lock for specified device
* Returns 0 if device lock acquired or EINVAL if timeout expires.
*/
static int
rio_lock_device(struct rio_mport *port, u16 destid, u8 hopcount, int wait_ms)
{
u32 result;
int tcnt = 0;
/* Attempt to acquire device lock */
rio_mport_write_config_32(port, destid, hopcount,
RIO_HOST_DID_LOCK_CSR, port->host_deviceid);
rio_mport_read_config_32(port, destid, hopcount,
RIO_HOST_DID_LOCK_CSR, &result);
while (result != port->host_deviceid) {
if (wait_ms != 0 && tcnt == wait_ms) {
pr_debug("RIO: timeout when locking device %x:%x\n",
destid, hopcount);
return -EINVAL;
}
/* Delay a bit */
mdelay(1);
tcnt++;
/* Try to acquire device lock again */
rio_mport_write_config_32(port, destid,
hopcount,
RIO_HOST_DID_LOCK_CSR,
port->host_deviceid);
rio_mport_read_config_32(port, destid,
hopcount,
RIO_HOST_DID_LOCK_CSR, &result);
}
return 0;
}
/**
* rio_unlock_device - Releases host device lock for specified device
* @port: Master port to send transaction
* @destid: Destination ID for device/switch
* @hopcount: Hopcount to reach switch
*
* Returns 0 if device lock released or EINVAL if fails.
*/
static int
rio_unlock_device(struct rio_mport *port, u16 destid, u8 hopcount)
{
u32 result;
/* Release device lock */
rio_mport_write_config_32(port, destid,
hopcount,
RIO_HOST_DID_LOCK_CSR,
port->host_deviceid);
rio_mport_read_config_32(port, destid, hopcount,
RIO_HOST_DID_LOCK_CSR, &result);
if ((result & 0xffff) != 0xffff) {
pr_debug("RIO: badness when releasing device lock %x:%x\n",
destid, hopcount);
return -EINVAL;
}
return 0;
}
/**
* rio_route_add_entry- Add a route entry to a switch routing table
* @rdev: RIO device
* @table: Routing table ID
* @route_destid: Destination ID to be routed
* @route_port: Port number to be routed
* @lock: lock switch device flag
*
* Calls the switch specific add_entry() method to add a route entry
* on a switch. The route table can be specified using the @table
* argument if a switch has per port routing tables or the normal
* use is to specific all tables (or the global table) by passing
* %RIO_GLOBAL_TABLE in @table. Returns %0 on success or %-EINVAL
* on failure.
*/
static int
rio_route_add_entry(struct rio_dev *rdev,
u16 table, u16 route_destid, u8 route_port, int lock)
{
int rc;
if (lock) {
rc = rio_lock_device(rdev->net->hport, rdev->destid,
rdev->hopcount, 1000);
if (rc)
return rc;
}
rc = rdev->rswitch->add_entry(rdev->net->hport, rdev->destid,
rdev->hopcount, table,
route_destid, route_port);
if (lock)
rio_unlock_device(rdev->net->hport, rdev->destid,
rdev->hopcount);
return rc;
}
/**
* rio_route_get_entry- Read a route entry in a switch routing table
* @rdev: RIO device
* @table: Routing table ID
* @route_destid: Destination ID to be routed
* @route_port: Pointer to read port number into
* @lock: lock switch device flag
*
* Calls the switch specific get_entry() method to read a route entry
* in a switch. The route table can be specified using the @table
* argument if a switch has per port routing tables or the normal
* use is to specific all tables (or the global table) by passing
* %RIO_GLOBAL_TABLE in @table. Returns %0 on success or %-EINVAL
* on failure.
*/
static int
rio_route_get_entry(struct rio_dev *rdev, u16 table,
u16 route_destid, u8 *route_port, int lock)
{
int rc;
if (lock) {
rc = rio_lock_device(rdev->net->hport, rdev->destid,
rdev->hopcount, 1000);
if (rc)
return rc;
}
rc = rdev->rswitch->get_entry(rdev->net->hport, rdev->destid,
rdev->hopcount, table,
route_destid, route_port);
if (lock)
rio_unlock_device(rdev->net->hport, rdev->destid,
rdev->hopcount);
return rc;
}
/**
* rio_get_host_deviceid_lock- Reads the Host Device ID Lock CSR on a device
* @port: Master port to send transaction
@ -1094,12 +944,9 @@ static void rio_update_route_tables(struct rio_net *net)
sport = RIO_GET_PORT_NUM(swrdev->swpinfo);
if (rswitch->add_entry) {
rio_route_add_entry(swrdev,
RIO_GLOBAL_TABLE, destid,
sport, 0);
rswitch->route_table[destid] = sport;
}
rio_route_add_entry(swrdev, RIO_GLOBAL_TABLE,
destid, sport, 0);
rswitch->route_table[destid] = sport;
}
}
}
@ -1115,8 +962,8 @@ static void rio_update_route_tables(struct rio_net *net)
static void rio_init_em(struct rio_dev *rdev)
{
if (rio_is_switch(rdev) && (rdev->em_efptr) &&
(rdev->rswitch->em_init)) {
rdev->rswitch->em_init(rdev);
rdev->rswitch->ops && rdev->rswitch->ops->em_init) {
rdev->rswitch->ops->em_init(rdev);
}
}

View File

@ -257,8 +257,6 @@ int rio_create_sysfs_dev_files(struct rio_dev *rdev)
err |= device_create_file(&rdev->dev, &dev_attr_routes);
err |= device_create_file(&rdev->dev, &dev_attr_lnext);
err |= device_create_file(&rdev->dev, &dev_attr_hopcount);
if (!err && rdev->rswitch->sw_sysfs)
err = rdev->rswitch->sw_sysfs(rdev, RIO_SW_SYSFS_CREATE);
}
if (err)
@ -281,8 +279,6 @@ void rio_remove_sysfs_dev_files(struct rio_dev *rdev)
device_remove_file(&rdev->dev, &dev_attr_routes);
device_remove_file(&rdev->dev, &dev_attr_lnext);
device_remove_file(&rdev->dev, &dev_attr_hopcount);
if (rdev->rswitch->sw_sysfs)
rdev->rswitch->sw_sysfs(rdev, RIO_SW_SYSFS_REMOVE);
}
}

View File

@ -7,7 +7,6 @@
*
* Copyright 2009 Integrated Device Technology, Inc.
* Alex Bounine <alexandre.bounine@idt.com>
* - Added Port-Write/Error Management initialization and handling
*
* 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
@ -579,44 +578,6 @@ int rio_set_port_lockout(struct rio_dev *rdev, u32 pnum, int lock)
}
EXPORT_SYMBOL_GPL(rio_set_port_lockout);
/**
* rio_switch_init - Sets switch operations for a particular vendor switch
* @rdev: RIO device
* @do_enum: Enumeration/Discovery mode flag
*
* 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.
*/
void rio_switch_init(struct rio_dev *rdev, int do_enum)
{
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: calling init routine for %s\n",
rio_name(rdev));
cur->init_hook(rdev, do_enum);
break;
}
cur++;
}
if ((cur >= end) && (rdev->pef & RIO_PEF_STD_RT)) {
pr_debug("RIO: adding STD routing ops for %s\n",
rio_name(rdev));
rdev->rswitch->add_entry = rio_std_route_add_entry;
rdev->rswitch->get_entry = rio_std_route_get_entry;
rdev->rswitch->clr_table = rio_std_route_clr_table;
}
if (!rdev->rswitch->add_entry || !rdev->rswitch->get_entry)
printk(KERN_ERR "RIO: missing routing ops for %s\n",
rio_name(rdev));
}
EXPORT_SYMBOL_GPL(rio_switch_init);
/**
* rio_enable_rx_tx_port - enable input receiver and output transmitter of
* given port
@ -970,8 +931,8 @@ int rio_inb_pwrite_handler(union rio_pw_msg *pw_msg)
/*
* Process the port-write notification from switch
*/
if (rdev->rswitch->em_handle)
rdev->rswitch->em_handle(rdev, portnum);
if (rdev->rswitch->ops && rdev->rswitch->ops->em_handle)
rdev->rswitch->ops->em_handle(rdev, portnum);
rio_read_config_32(rdev,
rdev->phys_efptr + RIO_PORT_N_ERR_STS_CSR(portnum),
@ -1207,8 +1168,9 @@ struct rio_dev *rio_get_device(u16 vid, u16 did, struct rio_dev *from)
* @route_destid: destID entry in the RT
* @route_port: destination port for specified destID
*/
int rio_std_route_add_entry(struct rio_mport *mport, u16 destid, u8 hopcount,
u16 table, u16 route_destid, u8 route_port)
static int
rio_std_route_add_entry(struct rio_mport *mport, u16 destid, u8 hopcount,
u16 table, u16 route_destid, u8 route_port)
{
if (table == RIO_GLOBAL_TABLE) {
rio_mport_write_config_32(mport, destid, hopcount,
@ -1234,8 +1196,9 @@ int rio_std_route_add_entry(struct rio_mport *mport, u16 destid, u8 hopcount,
* @route_destid: destID entry in the RT
* @route_port: returned destination port for specified destID
*/
int rio_std_route_get_entry(struct rio_mport *mport, u16 destid, u8 hopcount,
u16 table, u16 route_destid, u8 *route_port)
static int
rio_std_route_get_entry(struct rio_mport *mport, u16 destid, u8 hopcount,
u16 table, u16 route_destid, u8 *route_port)
{
u32 result;
@ -1259,8 +1222,9 @@ int rio_std_route_get_entry(struct rio_mport *mport, u16 destid, u8 hopcount,
* @hopcount: Number of switch hops to the device
* @table: routing table ID (global or port-specific)
*/
int rio_std_route_clr_table(struct rio_mport *mport, u16 destid, u8 hopcount,
u16 table)
static int
rio_std_route_clr_table(struct rio_mport *mport, u16 destid, u8 hopcount,
u16 table)
{
u32 max_destid = 0xff;
u32 i, pef, id_inc = 1, ext_cfg = 0;
@ -1301,6 +1265,234 @@ int rio_std_route_clr_table(struct rio_mport *mport, u16 destid, u8 hopcount,
return 0;
}
/**
* rio_lock_device - Acquires host device lock for specified device
* @port: Master port to send transaction
* @destid: Destination ID for device/switch
* @hopcount: Hopcount to reach switch
* @wait_ms: Max wait time in msec (0 = no timeout)
*
* Attepts to acquire host device lock for specified device
* Returns 0 if device lock acquired or EINVAL if timeout expires.
*/
int rio_lock_device(struct rio_mport *port, u16 destid,
u8 hopcount, int wait_ms)
{
u32 result;
int tcnt = 0;
/* Attempt to acquire device lock */
rio_mport_write_config_32(port, destid, hopcount,
RIO_HOST_DID_LOCK_CSR, port->host_deviceid);
rio_mport_read_config_32(port, destid, hopcount,
RIO_HOST_DID_LOCK_CSR, &result);
while (result != port->host_deviceid) {
if (wait_ms != 0 && tcnt == wait_ms) {
pr_debug("RIO: timeout when locking device %x:%x\n",
destid, hopcount);
return -EINVAL;
}
/* Delay a bit */
mdelay(1);
tcnt++;
/* Try to acquire device lock again */
rio_mport_write_config_32(port, destid,
hopcount,
RIO_HOST_DID_LOCK_CSR,
port->host_deviceid);
rio_mport_read_config_32(port, destid,
hopcount,
RIO_HOST_DID_LOCK_CSR, &result);
}
return 0;
}
EXPORT_SYMBOL_GPL(rio_lock_device);
/**
* rio_unlock_device - Releases host device lock for specified device
* @port: Master port to send transaction
* @destid: Destination ID for device/switch
* @hopcount: Hopcount to reach switch
*
* Returns 0 if device lock released or EINVAL if fails.
*/
int rio_unlock_device(struct rio_mport *port, u16 destid, u8 hopcount)
{
u32 result;
/* Release device lock */
rio_mport_write_config_32(port, destid,
hopcount,
RIO_HOST_DID_LOCK_CSR,
port->host_deviceid);
rio_mport_read_config_32(port, destid, hopcount,
RIO_HOST_DID_LOCK_CSR, &result);
if ((result & 0xffff) != 0xffff) {
pr_debug("RIO: badness when releasing device lock %x:%x\n",
destid, hopcount);
return -EINVAL;
}
return 0;
}
EXPORT_SYMBOL_GPL(rio_unlock_device);
/**
* rio_route_add_entry- Add a route entry to a switch routing table
* @rdev: RIO device
* @table: Routing table ID
* @route_destid: Destination ID to be routed
* @route_port: Port number to be routed
* @lock: apply a hardware lock on switch device flag (1=lock, 0=no_lock)
*
* If available calls the switch specific add_entry() method to add a route
* entry into a switch routing table. Otherwise uses standard RT update method
* as defined by RapidIO specification. A specific routing table can be selected
* using the @table argument if a switch has per port routing tables or
* the standard (or global) table may be used by passing
* %RIO_GLOBAL_TABLE in @table.
*
* Returns %0 on success or %-EINVAL on failure.
*/
int rio_route_add_entry(struct rio_dev *rdev,
u16 table, u16 route_destid, u8 route_port, int lock)
{
int rc = -EINVAL;
struct rio_switch_ops *ops = rdev->rswitch->ops;
if (lock) {
rc = rio_lock_device(rdev->net->hport, rdev->destid,
rdev->hopcount, 1000);
if (rc)
return rc;
}
spin_lock(&rdev->rswitch->lock);
if (ops == NULL || ops->add_entry == NULL) {
rc = rio_std_route_add_entry(rdev->net->hport, rdev->destid,
rdev->hopcount, table,
route_destid, route_port);
} else if (try_module_get(ops->owner)) {
rc = ops->add_entry(rdev->net->hport, rdev->destid,
rdev->hopcount, table, route_destid,
route_port);
module_put(ops->owner);
}
spin_unlock(&rdev->rswitch->lock);
if (lock)
rio_unlock_device(rdev->net->hport, rdev->destid,
rdev->hopcount);
return rc;
}
EXPORT_SYMBOL_GPL(rio_route_add_entry);
/**
* rio_route_get_entry- Read an entry from a switch routing table
* @rdev: RIO device
* @table: Routing table ID
* @route_destid: Destination ID to be routed
* @route_port: Pointer to read port number into
* @lock: apply a hardware lock on switch device flag (1=lock, 0=no_lock)
*
* If available calls the switch specific get_entry() method to fetch a route
* entry from a switch routing table. Otherwise uses standard RT read method
* as defined by RapidIO specification. A specific routing table can be selected
* using the @table argument if a switch has per port routing tables or
* the standard (or global) table may be used by passing
* %RIO_GLOBAL_TABLE in @table.
*
* Returns %0 on success or %-EINVAL on failure.
*/
int rio_route_get_entry(struct rio_dev *rdev, u16 table,
u16 route_destid, u8 *route_port, int lock)
{
int rc = -EINVAL;
struct rio_switch_ops *ops = rdev->rswitch->ops;
if (lock) {
rc = rio_lock_device(rdev->net->hport, rdev->destid,
rdev->hopcount, 1000);
if (rc)
return rc;
}
spin_lock(&rdev->rswitch->lock);
if (ops == NULL || ops->get_entry == NULL) {
rc = rio_std_route_get_entry(rdev->net->hport, rdev->destid,
rdev->hopcount, table,
route_destid, route_port);
} else if (try_module_get(ops->owner)) {
rc = ops->get_entry(rdev->net->hport, rdev->destid,
rdev->hopcount, table, route_destid,
route_port);
module_put(ops->owner);
}
spin_unlock(&rdev->rswitch->lock);
if (lock)
rio_unlock_device(rdev->net->hport, rdev->destid,
rdev->hopcount);
return rc;
}
EXPORT_SYMBOL_GPL(rio_route_get_entry);
/**
* rio_route_clr_table - Clear a switch routing table
* @rdev: RIO device
* @table: Routing table ID
* @lock: apply a hardware lock on switch device flag (1=lock, 0=no_lock)
*
* If available calls the switch specific clr_table() method to clear a switch
* routing table. Otherwise uses standard RT write method as defined by RapidIO
* specification. A specific routing table can be selected using the @table
* argument if a switch has per port routing tables or the standard (or global)
* table may be used by passing %RIO_GLOBAL_TABLE in @table.
*
* Returns %0 on success or %-EINVAL on failure.
*/
int rio_route_clr_table(struct rio_dev *rdev, u16 table, int lock)
{
int rc = -EINVAL;
struct rio_switch_ops *ops = rdev->rswitch->ops;
if (lock) {
rc = rio_lock_device(rdev->net->hport, rdev->destid,
rdev->hopcount, 1000);
if (rc)
return rc;
}
spin_lock(&rdev->rswitch->lock);
if (ops == NULL || ops->clr_table == NULL) {
rc = rio_std_route_clr_table(rdev->net->hport, rdev->destid,
rdev->hopcount, table);
} else if (try_module_get(ops->owner)) {
rc = ops->clr_table(rdev->net->hport, rdev->destid,
rdev->hopcount, table);
module_put(ops->owner);
}
spin_unlock(&rdev->rswitch->lock);
if (lock)
rio_unlock_device(rdev->net->hport, rdev->destid,
rdev->hopcount);
return rc;
}
EXPORT_SYMBOL_GPL(rio_route_clr_table);
#ifdef CONFIG_RAPIDIO_DMA_ENGINE
static bool rio_chan_filter(struct dma_chan *chan, void *arg)

View File

@ -28,18 +28,17 @@ extern u32 rio_mport_get_efb(struct rio_mport *port, int local, u16 destid,
extern int rio_mport_chk_dev_access(struct rio_mport *mport, u16 destid,
u8 hopcount);
extern int rio_create_sysfs_dev_files(struct rio_dev *rdev);
extern int rio_std_route_add_entry(struct rio_mport *mport, u16 destid,
u8 hopcount, u16 table, u16 route_destid,
u8 route_port);
extern int rio_std_route_get_entry(struct rio_mport *mport, u16 destid,
u8 hopcount, u16 table, u16 route_destid,
u8 *route_port);
extern int rio_std_route_clr_table(struct rio_mport *mport, u16 destid,
u8 hopcount, u16 table);
extern int rio_lock_device(struct rio_mport *port, u16 destid,
u8 hopcount, int wait_ms);
extern int rio_unlock_device(struct rio_mport *port, u16 destid, u8 hopcount);
extern int rio_route_add_entry(struct rio_dev *rdev,
u16 table, u16 route_destid, u8 route_port, int lock);
extern int rio_route_get_entry(struct rio_dev *rdev, u16 table,
u16 route_destid, u8 *route_port, int lock);
extern int rio_route_clr_table(struct rio_dev *rdev, u16 table, int lock);
extern int rio_set_port_lockout(struct rio_dev *rdev, u32 pnum, int lock);
extern struct rio_dev *rio_get_comptag(u32 comp_tag, struct rio_dev *from);
extern int rio_add_device(struct rio_dev *rdev);
extern void rio_switch_init(struct rio_dev *rdev, int do_enum);
extern int rio_enable_rx_tx_port(struct rio_mport *port, int local, u16 destid,
u8 hopcount, u8 port_num);
extern int rio_register_scan(int mport_id, struct rio_scan *scan_ops);
@ -51,29 +50,5 @@ extern struct rio_mport *rio_find_mport(int mport_id);
extern struct device_attribute rio_dev_attrs[];
extern struct bus_attribute rio_bus_attrs[];
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_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_SWITCH_INIT - Registers switch initialization routine
* @vid: RIO vendor ID
* @did: RIO device ID
* @init_hook: Callback that performs switch-specific initialization
*
* 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_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))

View File

@ -2,27 +2,23 @@
# RapidIO switches configuration
#
config RAPIDIO_TSI57X
bool "IDT Tsi57x SRIO switches support"
depends on RAPIDIO
tristate "IDT Tsi57x SRIO switches support"
---help---
Includes support for IDT Tsi57x family of serial RapidIO switches.
config RAPIDIO_CPS_XX
bool "IDT CPS-xx SRIO switches support"
depends on RAPIDIO
tristate "IDT CPS-xx SRIO switches support"
---help---
Includes support for IDT CPS-16/12/10/8 serial RapidIO switches.
config RAPIDIO_TSI568
bool "Tsi568 SRIO switch support"
depends on RAPIDIO
tristate "Tsi568 SRIO switch support"
default n
---help---
Includes support for IDT Tsi568 serial RapidIO switch.
config RAPIDIO_CPS_GEN2
bool "IDT CPS Gen.2 SRIO switch support"
depends on RAPIDIO
tristate "IDT CPS Gen.2 SRIO switch support"
default n
---help---
Includes support for ITD CPS Gen.2 serial RapidIO switches.

View File

@ -11,6 +11,7 @@
*/
#include <linux/stat.h>
#include <linux/module.h>
#include <linux/rio.h>
#include <linux/rio_drv.h>
#include <linux/rio_ids.h>
@ -387,12 +388,12 @@ idtg2_show_errlog(struct device *dev, struct device_attribute *attr, char *buf)
static DEVICE_ATTR(errlog, S_IRUGO, idtg2_show_errlog, NULL);
static int idtg2_sysfs(struct rio_dev *rdev, int create)
static int idtg2_sysfs(struct rio_dev *rdev, bool create)
{
struct device *dev = &rdev->dev;
int err = 0;
if (create == RIO_SW_SYSFS_CREATE) {
if (create) {
/* Initialize sysfs entries */
err = device_create_file(dev, &dev_attr_errlog);
if (err)
@ -403,29 +404,90 @@ static int idtg2_sysfs(struct rio_dev *rdev, int create)
return err;
}
static int idtg2_switch_init(struct rio_dev *rdev, int do_enum)
static struct rio_switch_ops idtg2_switch_ops = {
.owner = THIS_MODULE,
.add_entry = idtg2_route_add_entry,
.get_entry = idtg2_route_get_entry,
.clr_table = idtg2_route_clr_table,
.set_domain = idtg2_set_domain,
.get_domain = idtg2_get_domain,
.em_init = idtg2_em_init,
.em_handle = idtg2_em_handler,
};
static int idtg2_probe(struct rio_dev *rdev, const struct rio_device_id *id)
{
pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev));
rdev->rswitch->add_entry = idtg2_route_add_entry;
rdev->rswitch->get_entry = idtg2_route_get_entry;
rdev->rswitch->clr_table = idtg2_route_clr_table;
rdev->rswitch->set_domain = idtg2_set_domain;
rdev->rswitch->get_domain = idtg2_get_domain;
rdev->rswitch->em_init = idtg2_em_init;
rdev->rswitch->em_handle = idtg2_em_handler;
rdev->rswitch->sw_sysfs = idtg2_sysfs;
if (do_enum) {
spin_lock(&rdev->rswitch->lock);
if (rdev->rswitch->ops) {
spin_unlock(&rdev->rswitch->lock);
return -EINVAL;
}
rdev->rswitch->ops = &idtg2_switch_ops;
if (rdev->do_enum) {
/* Ensure that default routing is disabled on startup */
rio_write_config_32(rdev,
RIO_STD_RTE_DEFAULT_PORT, IDT_NO_ROUTE);
}
/* Create device-specific sysfs attributes */
idtg2_sysfs(rdev, true);
spin_unlock(&rdev->rswitch->lock);
return 0;
}
DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS1848, idtg2_switch_init);
DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS1616, idtg2_switch_init);
DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTVPS1616, idtg2_switch_init);
DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTSPS1616, idtg2_switch_init);
DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS1432, idtg2_switch_init);
static void idtg2_remove(struct rio_dev *rdev)
{
pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev));
spin_lock(&rdev->rswitch->lock);
if (rdev->rswitch->ops != &idtg2_switch_ops) {
spin_unlock(&rdev->rswitch->lock);
return;
}
rdev->rswitch->ops = NULL;
/* Remove device-specific sysfs attributes */
idtg2_sysfs(rdev, false);
spin_unlock(&rdev->rswitch->lock);
}
static struct rio_device_id idtg2_id_table[] = {
{RIO_DEVICE(RIO_DID_IDTCPS1848, RIO_VID_IDT)},
{RIO_DEVICE(RIO_DID_IDTCPS1616, RIO_VID_IDT)},
{RIO_DEVICE(RIO_DID_IDTVPS1616, RIO_VID_IDT)},
{RIO_DEVICE(RIO_DID_IDTSPS1616, RIO_VID_IDT)},
{RIO_DEVICE(RIO_DID_IDTCPS1432, RIO_VID_IDT)},
{ 0, } /* terminate list */
};
static struct rio_driver idtg2_driver = {
.name = "idt_gen2",
.id_table = idtg2_id_table,
.probe = idtg2_probe,
.remove = idtg2_remove,
};
static int __init idtg2_init(void)
{
return rio_register_driver(&idtg2_driver);
}
static void __exit idtg2_exit(void)
{
pr_debug("RIO: %s\n", __func__);
rio_unregister_driver(&idtg2_driver);
pr_debug("RIO: %s done\n", __func__);
}
device_initcall(idtg2_init);
module_exit(idtg2_exit);
MODULE_DESCRIPTION("IDT CPS Gen.2 Serial RapidIO switch family driver");
MODULE_AUTHOR("Integrated Device Technology, Inc.");
MODULE_LICENSE("GPL");

View File

@ -13,6 +13,7 @@
#include <linux/rio.h>
#include <linux/rio_drv.h>
#include <linux/rio_ids.h>
#include <linux/module.h>
#include "../rio.h"
#define CPS_DEFAULT_ROUTE 0xde
@ -118,18 +119,31 @@ idtcps_get_domain(struct rio_mport *mport, u16 destid, u8 hopcount,
return 0;
}
static int idtcps_switch_init(struct rio_dev *rdev, int do_enum)
static struct rio_switch_ops idtcps_switch_ops = {
.owner = THIS_MODULE,
.add_entry = idtcps_route_add_entry,
.get_entry = idtcps_route_get_entry,
.clr_table = idtcps_route_clr_table,
.set_domain = idtcps_set_domain,
.get_domain = idtcps_get_domain,
.em_init = NULL,
.em_handle = NULL,
};
static int idtcps_probe(struct rio_dev *rdev, const struct rio_device_id *id)
{
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;
if (do_enum) {
spin_lock(&rdev->rswitch->lock);
if (rdev->rswitch->ops) {
spin_unlock(&rdev->rswitch->lock);
return -EINVAL;
}
rdev->rswitch->ops = &idtcps_switch_ops;
if (rdev->do_enum) {
/* set TVAL = ~50us */
rio_write_config_32(rdev,
rdev->phys_efptr + RIO_PORT_LINKTO_CTL_CSR, 0x8e << 8);
@ -138,12 +152,52 @@ static int idtcps_switch_init(struct rio_dev *rdev, int do_enum)
RIO_STD_RTE_DEFAULT_PORT, CPS_NO_ROUTE);
}
spin_unlock(&rdev->rswitch->lock);
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);
static void idtcps_remove(struct rio_dev *rdev)
{
pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev));
spin_lock(&rdev->rswitch->lock);
if (rdev->rswitch->ops != &idtcps_switch_ops) {
spin_unlock(&rdev->rswitch->lock);
return;
}
rdev->rswitch->ops = NULL;
spin_unlock(&rdev->rswitch->lock);
}
static struct rio_device_id idtcps_id_table[] = {
{RIO_DEVICE(RIO_DID_IDTCPS6Q, RIO_VID_IDT)},
{RIO_DEVICE(RIO_DID_IDTCPS8, RIO_VID_IDT)},
{RIO_DEVICE(RIO_DID_IDTCPS10Q, RIO_VID_IDT)},
{RIO_DEVICE(RIO_DID_IDTCPS12, RIO_VID_IDT)},
{RIO_DEVICE(RIO_DID_IDTCPS16, RIO_VID_IDT)},
{RIO_DEVICE(RIO_DID_IDT70K200, RIO_VID_IDT)},
{ 0, } /* terminate list */
};
static struct rio_driver idtcps_driver = {
.name = "idtcps",
.id_table = idtcps_id_table,
.probe = idtcps_probe,
.remove = idtcps_remove,
};
static int __init idtcps_init(void)
{
return rio_register_driver(&idtcps_driver);
}
static void __exit idtcps_exit(void)
{
rio_unregister_driver(&idtcps_driver);
}
device_initcall(idtcps_init);
module_exit(idtcps_exit);
MODULE_DESCRIPTION("IDT CPS Gen.1 Serial RapidIO switch family driver");
MODULE_AUTHOR("Integrated Device Technology, Inc.");
MODULE_LICENSE("GPL");

View File

@ -19,6 +19,7 @@
#include <linux/rio_drv.h>
#include <linux/rio_ids.h>
#include <linux/delay.h>
#include <linux/module.h>
#include "../rio.h"
/* Global (broadcast) route registers */
@ -129,18 +130,70 @@ tsi568_em_init(struct rio_dev *rdev)
return 0;
}
static int tsi568_switch_init(struct rio_dev *rdev, int do_enum)
static struct rio_switch_ops tsi568_switch_ops = {
.owner = THIS_MODULE,
.add_entry = tsi568_route_add_entry,
.get_entry = tsi568_route_get_entry,
.clr_table = tsi568_route_clr_table,
.set_domain = NULL,
.get_domain = NULL,
.em_init = tsi568_em_init,
.em_handle = NULL,
};
static int tsi568_probe(struct rio_dev *rdev, const struct rio_device_id *id)
{
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->set_domain = NULL;
rdev->rswitch->get_domain = NULL;
rdev->rswitch->em_init = tsi568_em_init;
rdev->rswitch->em_handle = NULL;
spin_lock(&rdev->rswitch->lock);
if (rdev->rswitch->ops) {
spin_unlock(&rdev->rswitch->lock);
return -EINVAL;
}
rdev->rswitch->ops = &tsi568_switch_ops;
spin_unlock(&rdev->rswitch->lock);
return 0;
}
DECLARE_RIO_SWITCH_INIT(RIO_VID_TUNDRA, RIO_DID_TSI568, tsi568_switch_init);
static void tsi568_remove(struct rio_dev *rdev)
{
pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev));
spin_lock(&rdev->rswitch->lock);
if (rdev->rswitch->ops != &tsi568_switch_ops) {
spin_unlock(&rdev->rswitch->lock);
return;
}
rdev->rswitch->ops = NULL;
spin_unlock(&rdev->rswitch->lock);
}
static struct rio_device_id tsi568_id_table[] = {
{RIO_DEVICE(RIO_DID_TSI568, RIO_VID_TUNDRA)},
{ 0, } /* terminate list */
};
static struct rio_driver tsi568_driver = {
.name = "tsi568",
.id_table = tsi568_id_table,
.probe = tsi568_probe,
.remove = tsi568_remove,
};
static int __init tsi568_init(void)
{
return rio_register_driver(&tsi568_driver);
}
static void __exit tsi568_exit(void)
{
rio_unregister_driver(&tsi568_driver);
}
device_initcall(tsi568_init);
module_exit(tsi568_exit);
MODULE_DESCRIPTION("IDT Tsi568 Serial RapidIO switch driver");
MODULE_AUTHOR("Integrated Device Technology, Inc.");
MODULE_LICENSE("GPL");

View File

@ -19,6 +19,7 @@
#include <linux/rio_drv.h>
#include <linux/rio_ids.h>
#include <linux/delay.h>
#include <linux/module.h>
#include "../rio.h"
/* Global (broadcast) route registers */
@ -292,27 +293,79 @@ exit_es:
return 0;
}
static int tsi57x_switch_init(struct rio_dev *rdev, int do_enum)
static struct rio_switch_ops tsi57x_switch_ops = {
.owner = THIS_MODULE,
.add_entry = tsi57x_route_add_entry,
.get_entry = tsi57x_route_get_entry,
.clr_table = tsi57x_route_clr_table,
.set_domain = tsi57x_set_domain,
.get_domain = tsi57x_get_domain,
.em_init = tsi57x_em_init,
.em_handle = tsi57x_em_handler,
};
static int tsi57x_probe(struct rio_dev *rdev, const struct rio_device_id *id)
{
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->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;
if (do_enum) {
spin_lock(&rdev->rswitch->lock);
if (rdev->rswitch->ops) {
spin_unlock(&rdev->rswitch->lock);
return -EINVAL;
}
rdev->rswitch->ops = &tsi57x_switch_ops;
if (rdev->do_enum) {
/* Ensure that default routing is disabled on startup */
rio_write_config_32(rdev, RIO_STD_RTE_DEFAULT_PORT,
RIO_INVALID_ROUTE);
}
spin_unlock(&rdev->rswitch->lock);
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);
static void tsi57x_remove(struct rio_dev *rdev)
{
pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev));
spin_lock(&rdev->rswitch->lock);
if (rdev->rswitch->ops != &tsi57x_switch_ops) {
spin_unlock(&rdev->rswitch->lock);
return;
}
rdev->rswitch->ops = NULL;
spin_unlock(&rdev->rswitch->lock);
}
static struct rio_device_id tsi57x_id_table[] = {
{RIO_DEVICE(RIO_DID_TSI572, RIO_VID_TUNDRA)},
{RIO_DEVICE(RIO_DID_TSI574, RIO_VID_TUNDRA)},
{RIO_DEVICE(RIO_DID_TSI577, RIO_VID_TUNDRA)},
{RIO_DEVICE(RIO_DID_TSI578, RIO_VID_TUNDRA)},
{ 0, } /* terminate list */
};
static struct rio_driver tsi57x_driver = {
.name = "tsi57x",
.id_table = tsi57x_id_table,
.probe = tsi57x_probe,
.remove = tsi57x_remove,
};
static int __init tsi57x_init(void)
{
return rio_register_driver(&tsi57x_driver);
}
static void __exit tsi57x_exit(void)
{
rio_unregister_driver(&tsi57x_driver);
}
device_initcall(tsi57x_init);
module_exit(tsi57x_exit);
MODULE_DESCRIPTION("IDT Tsi57x Serial RapidIO switch family driver");
MODULE_AUTHOR("Integrated Device Technology, Inc.");
MODULE_LICENSE("GPL");

View File

@ -275,13 +275,6 @@
VMLINUX_SYMBOL(__end_builtin_fw) = .; \
} \
\
/* RapidIO route ops */ \
.rio_ops : AT(ADDR(.rio_ops) - LOAD_OFFSET) { \
VMLINUX_SYMBOL(__start_rio_switch_ops) = .; \
*(.rio_switch_ops) \
VMLINUX_SYMBOL(__end_rio_switch_ops) = .; \
} \
\
TRACEDATA \
\
/* Kernel symbol table: Normal symbols */ \

View File

@ -94,14 +94,8 @@ union rio_pw_msg;
* @switchid: Switch ID that is unique across a network
* @route_table: Copy of switch routing table
* @port_ok: Status of each port (one bit per port) - OK=1 or UNINIT=0
* @add_entry: Callback for switch-specific route add function
* @get_entry: Callback for switch-specific route get function
* @clr_table: Callback for switch-specific clear route table function
* @set_domain: Callback for switch-specific domain setting function
* @get_domain: Callback for switch-specific domain get function
* @em_init: Callback for switch-specific error management init function
* @em_handle: Callback for switch-specific error management handler function
* @sw_sysfs: Callback that initializes switch-specific sysfs attributes
* @ops: pointer to switch-specific operations
* @lock: lock to serialize operations updates
* @nextdev: Array of per-port pointers to the next attached device
*/
struct rio_switch {
@ -109,6 +103,27 @@ struct rio_switch {
u16 switchid;
u8 *route_table;
u32 port_ok;
struct rio_switch_ops *ops;
spinlock_t lock;
struct rio_dev *nextdev[0];
};
/**
* struct rio_switch_ops - Per-switch operations
* @owner: The module owner of this structure
* @add_entry: Callback for switch-specific route add function
* @get_entry: Callback for switch-specific route get function
* @clr_table: Callback for switch-specific clear route table function
* @set_domain: Callback for switch-specific domain setting function
* @get_domain: Callback for switch-specific domain get function
* @em_init: Callback for switch-specific error management init function
* @em_handle: Callback for switch-specific error management handler function
*
* Defines the operations that are necessary to initialize/control
* a particular RIO switch device.
*/
struct rio_switch_ops {
struct module *owner;
int (*add_entry) (struct rio_mport *mport, u16 destid, u8 hopcount,
u16 table, u16 route_destid, u8 route_port);
int (*get_entry) (struct rio_mport *mport, u16 destid, u8 hopcount,
@ -121,8 +136,6 @@ struct rio_switch {
u8 *sw_domain);
int (*em_init) (struct rio_dev *dev);
int (*em_handle) (struct rio_dev *dev, u8 swport);
int (*sw_sysfs) (struct rio_dev *dev, int create);
struct rio_dev *nextdev[0];
};
/**
@ -130,6 +143,7 @@ struct rio_switch {
* @global_list: Node in list of all RIO devices
* @net_list: Node in list of RIO devices in a network
* @net: Network this device is a part of
* @do_enum: Enumeration flag
* @did: Device ID
* @vid: Vendor ID
* @device_rev: Device revision
@ -158,6 +172,7 @@ struct rio_dev {
struct list_head global_list; /* node in list of all RIO devices */
struct list_head net_list; /* node in per net list */
struct rio_net *net; /* RIO net this device resides in */
bool do_enum;
u16 did;
u16 vid;
u32 device_rev;
@ -297,10 +312,6 @@ struct rio_net {
struct rio_id_table destid_table; /* destID allocation table */
};
/* Definitions used by switch sysfs initialization callback */
#define RIO_SW_SYSFS_CREATE 1 /* Create switch attributes */
#define RIO_SW_SYSFS_REMOVE 0 /* Remove switch attributes */
/* Low-level architecture-dependent routines */
/**
@ -400,20 +411,6 @@ struct rio_device_id {
u16 asm_did, asm_vid;
};
/**
* struct rio_switch_ops - Per-switch operations
* @vid: RIO vendor ID
* @did: RIO device ID
* @init_hook: Callback that performs switch device initialization
*
* Defines the operations that are necessary to initialize/control
* a particular RIO switch device.
*/
struct rio_switch_ops {
u16 vid, did;
int (*init_hook) (struct rio_dev *rdev, int do_enum);
};
union rio_pw_msg {
struct {
u32 comptag; /* Component Tag CSR */