[linux-yocto] [PATCH 03/30] drivers/rapidio: modified files
Charlie Paul
cpaul.windriver at gmail.com
Thu May 1 08:29:25 PDT 2014
From: Paul Butler <paul.butler at windriver.com>
Updated to include
- Rapid IO driver to use DMA for direct I/O data transfers
- Rapid Access Error Limit - number of device access errors accepted
during net configuration
- Rapid IO dynamic routing
- Rapid IO Multicast write messages
- Rapid IO assignment of destination IDs dynamically
- Rapid IO support of multiple enumeration hosts
- Rapid IO addition of a second destionation ID by the main RIO port
- Rapid IO Multicast mask support for multiple port writes
Makefile updated with rapid io additional files
Signed-off-by: Paul Butler <paul.butler at windriver.com>
---
drivers/rapidio/Kconfig | 85 +++
drivers/rapidio/Makefile | 4 +-
drivers/rapidio/rio-access.c | 89 +--
drivers/rapidio/rio-driver.c | 70 ++-
drivers/rapidio/rio-sysfs.c | 218 ++++++-
drivers/rapidio/rio.c | 1404 ++++++++++++++++++++++++++++++------------
drivers/rapidio/rio.h | 59 +-
7 files changed, 1473 insertions(+), 456 deletions(-)
diff --git a/drivers/rapidio/Kconfig b/drivers/rapidio/Kconfig
index bc87192..20b86a5 100644
--- a/drivers/rapidio/Kconfig
+++ b/drivers/rapidio/Kconfig
@@ -22,6 +22,91 @@ config RAPIDIO_ENABLE_RX_TX_PORTS
ports for Input/Output direction to allow other traffic
than Maintenance transfers.
+config RAPIDIO_DIO_DMA
+ bool "Use DMA for direct I/O access"
+ depends on RAPIDIO
+ default n
+ select DMA_ENGINE
+ ---help---
+ Say Y here if you want the RapidIO driver to use DMA for direct I/O
+ data transfers.
+
+config RAPIDIO_ACCESS_ERR_LIMIT
+ int "Number of device access errors accepted during net configuration, before giving up."
+ depends on RAPIDIO
+ default 0
+ ---help---
+ RIO net setup will be aborted if the core driver discovers that
+ contact is lost to devices, which has previously been probed, during
+ final LUT setup phase.
+ Failed SRIO access attempts may result in machine check errors:
+ Depending on SRIO port controller, the SRIO driver may have the
+ ability to recover from such faults. If your port controller supports
+ MC recovery for SRIO access errors you may chose to tolerate a certain
+ number of faults.
+ MC fault recovery, however, take some time and the user is advised
+ not to set this value to high.
+
+config RAPIDIO_DYNAMIC_ROUTES
+ bool "Use dynamic routing (Experimental)"
+ depends on RAPIDIO
+ default n
+ ---help---
+ Say Y here if you want the RapidIO driver to use dynamic routing and
+ calculate and adopt to the cheapest path between nodes.
+
+config RAPIDIO_MULTICAST_PW
+ bool "Port Write Multicast (Experimental)"
+ depends on RAPIDIO
+ default n
+ ---help---
+ Say Y here if you want the RapidIO driver to enable multicast of
+ prot write messages.
+
+config RAPIDIO_HOTPLUG
+ bool "Support for RAPIDIO Hotplug"
+ depends on RAPIDIO && HOTPLUG && SYSFS
+ default n
+ ---help---
+ This allows you to add and remove RIO devices while the machine is
+ powered up and running.
+
+ When in doubt, say N.
+
+config RAPIDIO_STATIC_DESTID
+ bool "Use static RIO device destID"
+ depends on RAPIDIO
+ default n
+ ---help---
+ The default enumeration mode in the rapidio driver is to assign destIDs
+ to RIO devices dynamically. If you say Y here, the rapidio driver allows
+ static or user defined numbering.
+
+config RAPIDIO_ENUM_DOMAIN
+ bool "Support multiple enumeration hosts in the RIO network (Experimental)"
+ depends on RAPIDIO && RAPIDIO_HOTPLUG && RAPIDIO_STATIC_DESTID
+ default n
+ ---help---
+ Support multiple enumeration hosts in the RIO network
+
+config RAPIDIO_SECOND_DEST_ID
+ hex "Add a second destination id to main RIO port"
+ depends on RAPIDIO_HOTPLUG
+ default "0xdc"
+ ---help---
+ Add a second destination id that will be recognized by the main RIO
+ port. Can for example be used to receive multicasts or equivalent
+ that has multiple recipients.
+
+config RAPIDIO_PW_MULTICAST_MASK_ID
+ int "Multicast mask id to use for multicast port writes in switches"
+ depends on RAPIDIO_HOTPLUG
+ default "1"
+ ---help---
+ When using domains we need to multicast all port writes to all
+ domains. For this we need to set up a multicast mask dedicated for
+ this on all switches. This is the number for that mask.
+
config RAPIDIO_DEBUG
bool "RapidIO subsystem debug messages"
depends on RAPIDIO
diff --git a/drivers/rapidio/Makefile b/drivers/rapidio/Makefile
index ec3fb81..66db244 100644
--- a/drivers/rapidio/Makefile
+++ b/drivers/rapidio/Makefile
@@ -1,7 +1,9 @@
#
# Makefile for RapidIO interconnect services
#
-obj-y += rio.o rio-access.o rio-driver.o rio-scan.o rio-sysfs.o
+#obj-y += rio.o rio-access.o rio-driver.o rio-scan.o rio-net.o rio-locks.o rio-sysfs.o rio-quirks.o rio-dio.o rio-destid.o rio-domain.o rio-hotplug.o rio-multicast.o rio-job.o
+
+obj-y += rio.o rio-access.o rio-driver.o rio-net2.o rio-locks.o rio-sysfs.o rio-quirks.o rio-dio.o rio-destid.o rio-hotplug.o rio-route.o
obj-$(CONFIG_RAPIDIO) += switches/
obj-$(CONFIG_RAPIDIO) += devices/
diff --git a/drivers/rapidio/rio-access.c b/drivers/rapidio/rio-access.c
index a3824ba..1e05d2a 100644
--- a/drivers/rapidio/rio-access.c
+++ b/drivers/rapidio/rio-access.c
@@ -17,9 +17,11 @@
* These interrupt-safe spinlocks protect all accesses to RIO
* configuration space and doorbell access.
*/
-static DEFINE_SPINLOCK(rio_config_lock);
-static DEFINE_SPINLOCK(rio_doorbell_lock);
+/* static DEFINE_SPINLOCK(rio_config_lock); */
+/* static DEFINE_SPINLOCK(rio_doorbell_lock); */
+static DEFINE_RAW_SPINLOCK(rio_config_lock);
+static DEFINE_RAW_SPINLOCK(rio_doorbell_lock);
/*
* Wrappers for all RIO configuration access functions. They just check
* alignment, do locking and call the low-level functions pointed to
@@ -39,18 +41,19 @@ static DEFINE_SPINLOCK(rio_doorbell_lock);
* Generates rio_local_read_config_* functions used to access
* configuration space registers on the local device.
*/
-#define RIO_LOP_READ(size,type,len) \
-int __rio_local_read_config_##size \
+#define RIO_LOP_READ(size, type, len) \
+int __rio_local_read_config_##size \
(struct rio_mport *mport, u32 offset, type *value) \
{ \
int res; \
unsigned long flags; \
u32 data = 0; \
- if (RIO_##size##_BAD) return RIO_BAD_SIZE; \
- spin_lock_irqsave(&rio_config_lock, flags); \
+ if (RIO_##size##_BAD) \
+ return RIO_BAD_SIZE; \
+ raw_spin_lock_irqsave(&rio_config_lock, flags); \
res = mport->ops->lcread(mport, mport->id, offset, len, &data); \
*value = (type)data; \
- spin_unlock_irqrestore(&rio_config_lock, flags); \
+ raw_spin_unlock_irqrestore(&rio_config_lock, flags); \
return res; \
}
@@ -63,31 +66,31 @@ int __rio_local_read_config_##size \
* Generates rio_local_write_config_* functions used to access
* configuration space registers on the local device.
*/
-#define RIO_LOP_WRITE(size,type,len) \
-int __rio_local_write_config_##size \
+#define RIO_LOP_WRITE(size, type, len) \
+int __rio_local_write_config_##size \
(struct rio_mport *mport, u32 offset, type value) \
{ \
int res; \
unsigned long flags; \
- if (RIO_##size##_BAD) return RIO_BAD_SIZE; \
- spin_lock_irqsave(&rio_config_lock, flags); \
+ if (RIO_##size##_BAD) \
+ return RIO_BAD_SIZE; \
+ raw_spin_lock_irqsave(&rio_config_lock, flags); \
res = mport->ops->lcwrite(mport, mport->id, offset, len, value);\
- spin_unlock_irqrestore(&rio_config_lock, flags); \
+ raw_spin_unlock_irqrestore(&rio_config_lock, flags); \
return res; \
}
RIO_LOP_READ(8, u8, 1)
-RIO_LOP_READ(16, u16, 2)
-RIO_LOP_READ(32, u32, 4)
-RIO_LOP_WRITE(8, u8, 1)
-RIO_LOP_WRITE(16, u16, 2)
-RIO_LOP_WRITE(32, u32, 4)
-
EXPORT_SYMBOL_GPL(__rio_local_read_config_8);
+RIO_LOP_READ(16, u16, 2)
EXPORT_SYMBOL_GPL(__rio_local_read_config_16);
+RIO_LOP_READ(32, u32, 4)
EXPORT_SYMBOL_GPL(__rio_local_read_config_32);
+RIO_LOP_WRITE(8, u8, 1)
EXPORT_SYMBOL_GPL(__rio_local_write_config_8);
+RIO_LOP_WRITE(16, u16, 2)
EXPORT_SYMBOL_GPL(__rio_local_write_config_16);
+RIO_LOP_WRITE(32, u32, 4)
EXPORT_SYMBOL_GPL(__rio_local_write_config_32);
/**
@@ -99,18 +102,21 @@ EXPORT_SYMBOL_GPL(__rio_local_write_config_32);
* Generates rio_mport_read_config_* functions used to access
* configuration space registers on the local device.
*/
-#define RIO_OP_READ(size,type,len) \
-int rio_mport_read_config_##size \
- (struct rio_mport *mport, u16 destid, u8 hopcount, u32 offset, type *value) \
+#define RIO_OP_READ(size, type, len) \
+int rio_mport_read_config_##size \
+ (struct rio_mport *mport, u16 destid, u8 hopcount, \
+ u32 offset, type *value) \
{ \
int res; \
unsigned long flags; \
u32 data = 0; \
- if (RIO_##size##_BAD) return RIO_BAD_SIZE; \
- spin_lock_irqsave(&rio_config_lock, flags); \
- res = mport->ops->cread(mport, mport->id, destid, hopcount, offset, len, &data); \
+ if (RIO_##size##_BAD) \
+ return RIO_BAD_SIZE; \
+ raw_spin_lock_irqsave(&rio_config_lock, flags); \
+ res = mport->ops->cread(mport, mport->id, destid, \
+ hopcount, offset, len, &data); \
*value = (type)data; \
- spin_unlock_irqrestore(&rio_config_lock, flags); \
+ raw_spin_unlock_irqrestore(&rio_config_lock, flags); \
return res; \
}
@@ -123,31 +129,33 @@ int rio_mport_read_config_##size \
* Generates rio_mport_write_config_* functions used to access
* configuration space registers on the local device.
*/
-#define RIO_OP_WRITE(size,type,len) \
-int rio_mport_write_config_##size \
- (struct rio_mport *mport, u16 destid, u8 hopcount, u32 offset, type value) \
+#define RIO_OP_WRITE(size, type, len) \
+int rio_mport_write_config_##size \
+ (struct rio_mport *mport, u16 destid, u8 hopcount, \
+ u32 offset, type value) \
{ \
int res; \
unsigned long flags; \
- if (RIO_##size##_BAD) return RIO_BAD_SIZE; \
- spin_lock_irqsave(&rio_config_lock, flags); \
- res = mport->ops->cwrite(mport, mport->id, destid, hopcount, offset, len, value); \
- spin_unlock_irqrestore(&rio_config_lock, flags); \
+ if (RIO_##size##_BAD) \
+ return RIO_BAD_SIZE; \
+ raw_spin_lock_irqsave(&rio_config_lock, flags); \
+ res = mport->ops->cwrite(mport, mport->id, destid, hopcount, \
+ offset, len, value); \
+ raw_spin_unlock_irqrestore(&rio_config_lock, flags); \
return res; \
}
RIO_OP_READ(8, u8, 1)
-RIO_OP_READ(16, u16, 2)
-RIO_OP_READ(32, u32, 4)
-RIO_OP_WRITE(8, u8, 1)
-RIO_OP_WRITE(16, u16, 2)
-RIO_OP_WRITE(32, u32, 4)
-
EXPORT_SYMBOL_GPL(rio_mport_read_config_8);
+RIO_OP_READ(16, u16, 2)
EXPORT_SYMBOL_GPL(rio_mport_read_config_16);
+RIO_OP_READ(32, u32, 4)
EXPORT_SYMBOL_GPL(rio_mport_read_config_32);
+RIO_OP_WRITE(8, u8, 1)
EXPORT_SYMBOL_GPL(rio_mport_write_config_8);
+RIO_OP_WRITE(16, u16, 2)
EXPORT_SYMBOL_GPL(rio_mport_write_config_16);
+RIO_OP_WRITE(32, u32, 4)
EXPORT_SYMBOL_GPL(rio_mport_write_config_32);
/**
@@ -165,11 +173,10 @@ int rio_mport_send_doorbell(struct rio_mport *mport, u16 destid, u16 data)
int res;
unsigned long flags;
- spin_lock_irqsave(&rio_doorbell_lock, flags);
+ raw_spin_lock_irqsave(&rio_doorbell_lock, flags);
res = mport->ops->dsend(mport, mport->id, destid, data);
- spin_unlock_irqrestore(&rio_doorbell_lock, flags);
+ raw_spin_unlock_irqrestore(&rio_doorbell_lock, flags);
return res;
}
-
EXPORT_SYMBOL_GPL(rio_mport_send_doorbell);
diff --git a/drivers/rapidio/rio-driver.c b/drivers/rapidio/rio-driver.c
index 0f4a53b..143b2ae 100644
--- a/drivers/rapidio/rio-driver.c
+++ b/drivers/rapidio/rio-driver.c
@@ -14,6 +14,7 @@
#include <linux/module.h>
#include <linux/rio.h>
#include <linux/rio_ids.h>
+#include <linux/rio_drv.h>
#include "rio.h"
@@ -58,9 +59,9 @@ struct rio_dev *rio_dev_get(struct rio_dev *rdev)
{
if (rdev)
get_device(&rdev->dev);
-
return rdev;
}
+EXPORT_SYMBOL_GPL(rio_dev_get);
/**
* rio_dev_put - Release a use of the RIO device structure
@@ -76,9 +77,11 @@ void rio_dev_put(struct rio_dev *rdev)
if (rdev)
put_device(&rdev->dev);
}
+EXPORT_SYMBOL_GPL(rio_dev_put);
/**
- * rio_device_probe - Tell if a RIO device structure has a matching RIO device id structure
+ * rio_device_probe - Tell if a RIO device structure has a matching
+ * RIO device id structure
* @dev: the RIO device structure to match against
*
* return 0 and set rio_dev->driver when drv claims rio_dev, else error
@@ -98,10 +101,15 @@ static int rio_device_probe(struct device *dev)
if (id)
error = rdrv->probe(rdev, id);
if (error >= 0) {
+ pr_debug("%s: for %s got driver %pF\n",
+ __func__, rio_name(rdev), rdrv->probe);
rdev->driver = rdrv;
error = 0;
- } else
+ } else {
+ pr_debug("%s: for %s probe fail\n",
+ __func__, rio_name(rdev));
rio_dev_put(rdev);
+ }
}
return error;
}
@@ -120,9 +128,16 @@ static int rio_device_remove(struct device *dev)
struct rio_dev *rdev = to_rio_dev(dev);
struct rio_driver *rdrv = rdev->driver;
+ pr_debug("device remove for %s\n", rio_name(rdev));
if (rdrv) {
- if (rdrv->remove)
+ if (rdrv->remove) {
+ pr_debug("driver remove for %s using %pF\n",
+ rio_name(rdev), rdrv->remove);
rdrv->remove(rdev);
+ } else {
+ pr_debug("driver not registered for %s\n",
+ rio_name(rdev));
+ }
rdev->driver = NULL;
}
@@ -142,13 +157,40 @@ static int rio_device_remove(struct device *dev)
*/
int rio_register_driver(struct rio_driver *rdrv)
{
+ int rc;
+
/* initialize common driver fields */
rdrv->driver.name = rdrv->name;
rdrv->driver.bus = &rio_bus_type;
+ rdrv->driver.owner = THIS_MODULE;
+ rdrv->driver.mod_name = KBUILD_MODNAME;
+
+ spin_lock_init(&rdrv->dynids.lock);
+ INIT_LIST_HEAD(&rdrv->dynids.list);
/* register with core */
- return driver_register(&rdrv->driver);
+ rc = driver_register(&rdrv->driver);
+ if (rc)
+ goto out;
+
+ rc = rio_create_newid_file(rdrv);
+ if (rc)
+ goto out_newid;
+
+ rc = rio_create_removeid_file(rdrv);
+ if (rc)
+ goto out_removeid;
+out:
+ return rc;
+
+out_removeid:
+ rio_remove_newid_file(rdrv);
+out_newid:
+ driver_unregister(&rdrv->driver);
+ goto out;
+
}
+EXPORT_SYMBOL_GPL(rio_register_driver);
/**
* rio_unregister_driver - unregister a RIO driver
@@ -161,11 +203,15 @@ int rio_register_driver(struct rio_driver *rdrv)
*/
void rio_unregister_driver(struct rio_driver *rdrv)
{
+ rio_remove_removeid_file(rdrv);
+ rio_remove_newid_file(rdrv);
driver_unregister(&rdrv->driver);
}
+EXPORT_SYMBOL_GPL(rio_unregister_driver);
/**
- * rio_match_bus - Tell if a RIO device structure has a matching RIO driver device id structure
+ * rio_match_bus - Tell if a RIO device structure has a matching RIO
+ * driver device id structure
* @dev: the standard device structure to match against
* @drv: the standard driver structure containing the ids to match against
*
@@ -189,7 +235,8 @@ static int rio_match_bus(struct device *dev, struct device_driver *drv)
if (found_id)
return 1;
- out:return 0;
+out:
+ return 0;
}
struct device rio_bus = {
@@ -203,6 +250,7 @@ struct bus_type rio_bus_type = {
.probe = rio_device_probe,
.remove = rio_device_remove,
};
+EXPORT_SYMBOL_GPL(rio_bus_type);
/**
* rio_bus_init - Register the RapidIO bus with the device model
@@ -213,14 +261,8 @@ struct bus_type rio_bus_type = {
static int __init rio_bus_init(void)
{
if (device_register(&rio_bus) < 0)
- printk("RIO: failed to register RIO bus device\n");
+ printk(KERN_ERR "RIO: failed to register RIO bus device\n");
return bus_register(&rio_bus_type);
}
postcore_initcall(rio_bus_init);
-
-EXPORT_SYMBOL_GPL(rio_register_driver);
-EXPORT_SYMBOL_GPL(rio_unregister_driver);
-EXPORT_SYMBOL_GPL(rio_bus_type);
-EXPORT_SYMBOL_GPL(rio_dev_get);
-EXPORT_SYMBOL_GPL(rio_dev_put);
diff --git a/drivers/rapidio/rio-sysfs.c b/drivers/rapidio/rio-sysfs.c
index 4dbe360..288b014 100644
--- a/drivers/rapidio/rio-sysfs.c
+++ b/drivers/rapidio/rio-sysfs.c
@@ -10,18 +10,23 @@
* option) any later version.
*/
+#include <linux/slab.h>
+#include <linux/err.h>
#include <linux/kernel.h>
#include <linux/rio.h>
#include <linux/rio_drv.h>
#include <linux/stat.h>
#include <linux/capability.h>
+#ifdef NEW_STYLE
+#include <linux/radix-tree.h>
+#endif
#include "rio.h"
/* Sysfs support */
-#define rio_config_attr(field, format_string) \
+#define rio_config_attr(field, format_string) \
static ssize_t \
-field##_show(struct device *dev, struct device_attribute *attr, char *buf) \
+field##_show(struct device *dev, struct device_attribute *attr, char *buf) \
{ \
struct rio_dev *rdev = to_rio_dev(dev); \
\
@@ -37,24 +42,152 @@ rio_config_attr(asm_rev, "0x%04x\n");
rio_config_attr(destid, "0x%04x\n");
rio_config_attr(hopcount, "0x%02x\n");
-static ssize_t routes_show(struct device *dev, struct device_attribute *attr, char *buf)
+static ssize_t routes_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
struct rio_dev *rdev = to_rio_dev(dev);
char *str = buf;
int i;
+ u8 port;
- for (i = 0; i < RIO_MAX_ROUTE_ENTRIES(rdev->net->hport->sys_size);
+ if (rio_hw_lock_wait(rdev->hport, rdev->destid, rdev->hopcount, 1))
+ goto done;
+
+ for (i = 0; i < RIO_MAX_ROUTE_ENTRIES(rdev->hport->sys_size);
i++) {
- if (rdev->rswitch->route_table[i] == RIO_INVALID_ROUTE)
+ if (rio_route_get_port(rdev, i, &port, 0))
+ continue;
+
+ if (port == RIO_INVALID_ROUTE)
continue;
str +=
- sprintf(str, "%04x %02x\n", i,
- rdev->rswitch->route_table[i]);
+ sprintf(str, "%04x %02x\n", i, port);
}
- return (str - buf);
+ rio_hw_unlock(rdev->hport, rdev->destid, rdev->hopcount);
+
+done:
+ return str - buf;
}
+static ssize_t port_status_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct rio_dev *rdev = to_rio_dev(dev);
+ char *str = buf;
+ int no_ports, port, rc, link_ok;
+ u32 value, status_reg, ctrl_reg;
+
+ rc = rio_read_config_32(rdev, RIO_SWP_INFO_CAR, &value);
+ if (rc) {
+ pr_debug(
+ "RIO: (%s) Failed to read status reg addr=%08x result=%d\n",
+ __func__, RIO_SWP_INFO_CAR, rc);
+ goto done;
+ }
+ no_ports = (value & RIO_SWP_INFO_PORT_TOTAL_MASK) >> 8;
+
+ str += sprintf(str, "\nPort\tLink\tPORT_N_ERR\tPORT_N_CTL\n");
+ str += sprintf(str, "------------------------------------------\n");
+
+ for (port = 0; port < no_ports; port++) {
+ rc = rio_read_config_32(rdev,
+ rdev->phys_efptr +
+ RIO_PORT_N_ERR_STS_CSR(port),
+ &status_reg);
+ if (rc) {
+ pr_debug("RIO: (%s) Failed to read status reg addr=%08x result=%d\n",
+ __func__, rdev->phys_efptr +
+ RIO_PORT_N_ERR_STS_CSR(port), rc);
+ goto done;
+ }
+ rc = rio_read_config_32(rdev,
+ rdev->phys_efptr +
+ RIO_PORT_N_CTL_CSR(port),
+ &ctrl_reg);
+ if (rc) {
+ pr_debug("RIO: (%s) Failed to read control reg addr=%08x result=%d\n",
+ __func__, rdev->phys_efptr +
+ RIO_PORT_N_CTL_CSR(port), rc);
+ goto done;
+ }
+
+ link_ok = ((status_reg & RIO_PORT_N_ERR_STS_PORT_OK) != 0);
+
+ str += sprintf(str, "%3d\t%s\t0x%08x\t0x%08x\n",
+ port,
+ (link_ok) ? "OK" : "NOK",
+ status_reg,
+ ctrl_reg);
+ }
+ str += sprintf(str, "------------------------------------------\n\n");
+
+done:
+ return str - buf;
+}
+
+static ssize_t lut_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct rio_dev *rdev = to_rio_dev(dev);
+ char *str = buf;
+ u16 destid;
+
+ for (destid = 0;
+ destid < RIO_ANY_DESTID(rdev->hport->sys_size); destid++) {
+ u8 route_port;
+ rdev->rswitch->get_entry(rdev->hport, rdev->destid,
+ rdev->hopcount, RIO_GLOBAL_TABLE,
+ destid, &route_port);
+ if (route_port != RIO_INVALID_ROUTE)
+ str += sprintf(str, "%04x %02x\n", destid, route_port);
+ }
+ return str - buf;
+}
+
+#ifdef NEW_STYLE
+static ssize_t lprev_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct rio_dev *rdev = to_rio_dev(dev);
+ struct rio_dev *prev;
+ ssize_t count;
+
+ rcu_read_lock();
+ prev = radix_tree_lookup(&rdev->hport->net.dev_tree,
+ rdev->prev_destid);
+ count = sprintf(buf, "%s\n",
+ (prev) ? rio_name(prev) : "root");
+ rcu_read_unlock();
+ return count;
+}
+
+static ssize_t lnext_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct rio_dev *rdev = to_rio_dev(dev);
+ char *str = buf;
+ int i;
+
+ if (rdev->pef & RIO_PEF_SWITCH) {
+ for (i = 0; i < RIO_GET_TOTAL_PORTS(rdev->swpinfo); i++) {
+ struct rio_dev *next = lookup_rdev_next(rdev, i);
+
+ if (!IS_ERR(next)) {
+ str += sprintf(str, "%s\n",
+ rio_name(next));
+ rio_dev_put(next);
+ } else
+ str += sprintf(str, "null\n");
+ }
+ }
+
+ return str - buf;
+}
+
+#else
+
static ssize_t lprev_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
@@ -73,9 +206,9 @@ static ssize_t lnext_show(struct device *dev,
if (rdev->pef & RIO_PEF_SWITCH) {
for (i = 0; i < RIO_GET_TOTAL_PORTS(rdev->swpinfo); i++) {
- if (rdev->rswitch->nextdev[i])
+ if (rdev->rswitch->port[i].rdev)
str += sprintf(str, "%s\n",
- rio_name(rdev->rswitch->nextdev[i]));
+ rio_name(rdev->rswitch->port[i].rdev));
else
str += sprintf(str, "null\n");
}
@@ -83,6 +216,7 @@ static ssize_t lnext_show(struct device *dev,
return str - buf;
}
+#endif
struct device_attribute rio_dev_attrs[] = {
__ATTR_RO(did),
@@ -99,6 +233,9 @@ struct device_attribute rio_dev_attrs[] = {
static DEVICE_ATTR(routes, S_IRUGO, routes_show, NULL);
static DEVICE_ATTR(lnext, S_IRUGO, lnext_show, NULL);
static DEVICE_ATTR(hopcount, S_IRUGO, hopcount_show, NULL);
+static DEVICE_ATTR(port_status, S_IRUGO, port_status_show, NULL);
+static DEVICE_ATTR(lut, S_IRUGO, lut_show, NULL);
+
static ssize_t
rio_read_config(struct file *filp, struct kobject *kobj,
@@ -257,8 +394,12 @@ 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);
+ err |= device_create_file(&rdev->dev, &dev_attr_port_status);
+ err |= device_create_file(&rdev->dev, &dev_attr_lut);
+
if (!err && rdev->rswitch->sw_sysfs)
- err = rdev->rswitch->sw_sysfs(rdev, RIO_SW_SYSFS_CREATE);
+ err = rdev->rswitch->sw_sysfs(rdev,
+ RIO_SW_SYSFS_CREATE);
}
if (err)
@@ -281,7 +422,62 @@ 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);
}
}
+
+#if defined(CONFIG_RAPIDIO_HOTPLUG) || defined(CONFIG_RAPIDIO_STATIC_DESTID)
+static ssize_t rio_devices_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct rio_mport *mport = container_of(dev, struct rio_mport, dev);
+ char *str = buf;
+ int i, num = 0;
+ struct rio_dev **dptr = NULL;
+
+ if (!mport)
+ return -EINVAL;
+
+ dptr = rio_get_all_devices(mport, &num);
+ if (!dptr)
+ return 0;
+
+ if (IS_ERR(dptr))
+ return PTR_ERR(dptr);
+
+ str += sprintf(str, "Device table:\n");
+ str += sprintf(str,
+ "name\t\tdid\tvid\tswpinfo\t\thops\thwlock\tlocal\n");
+ for (i = 0; i < num; i++) {
+ struct rio_dev *node = dptr[i];
+
+ if (unlikely(!node))
+ continue;
+
+ str += sprintf(str,
+ "%s\t%4.4x\t%4.4x\t%8.8x\t%d\t%d\t%d\n",
+ rio_name(node),
+ node->did,
+ node->vid,
+ node->swpinfo,
+ node->hopcount,
+ node->use_hw_lock,
+ node->local_domain);
+ rio_dev_put(node);
+ }
+ kfree(dptr);
+ return str - buf;
+}
+static DEVICE_ATTR(devices, S_IRUGO, rio_devices_show, NULL);
+
+int rio_sysfs_init(struct rio_mport *mport)
+{
+ int rc = 0;
+
+ rc |= device_create_file(&mport->dev, &dev_attr_devices);
+
+ return rc;
+}
+#endif
diff --git a/drivers/rapidio/rio.c b/drivers/rapidio/rio.c
index 86c9a09..5312777 100644
--- a/drivers/rapidio/rio.c
+++ b/drivers/rapidio/rio.c
@@ -28,12 +28,238 @@
#include <linux/spinlock.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
+#include <linux/dma-mapping.h>
+#include <linux/hardirq.h>
+#include <linux/semaphore.h>
#include "rio.h"
+#include "rio-job.h"
-static LIST_HEAD(rio_mports);
+LIST_HEAD(rio_mports);
static unsigned char next_portid;
+struct rio_dev **rio_get_tagged_devices(struct rio_mport *mport, int tag, int *n)
+{
+ int items = atomic_read(&mport->net.rio_dev_num);
+ void **nptr = NULL;
+ struct rio_dev **dptr = NULL;
+ int i, num = 0;
+
+ if (!items)
+ goto done;
+
+ nptr = kzalloc(sizeof(void *) * items, GFP_KERNEL);
+ if (!nptr)
+ goto err;
+ dptr = kzalloc(sizeof(struct rio_dev *) * items, GFP_KERNEL);
+ if (!dptr)
+ goto err;
+
+ rcu_read_lock();
+retry:
+ num = radix_tree_gang_lookup_tag_slot(&mport->net.dev_tree, (void ***)nptr,
+ 0, items, tag);
+ if (num > 0) {
+ for (i = 0; i < num; i++) {
+ struct rio_dev *rdev = radix_tree_deref_slot((void **)nptr[i]);
+
+ if (unlikely(!rdev)) {
+ dptr[i] = NULL;
+ continue;
+ }
+ if (radix_tree_deref_retry(rdev))
+ goto retry;
+ dptr[i] = rio_dev_get(rdev);
+ }
+ }
+ rcu_read_unlock();
+done:
+ if (nptr != NULL)
+ kfree(nptr);
+ *n = num;
+ return dptr;
+err:
+ if (dptr != NULL)
+ kfree(dptr);
+ dptr = ERR_PTR(-ENOMEM);
+ goto done;
+}
+
+struct rio_dev **rio_get_all_devices(struct rio_mport *mport, int *n)
+{
+ int items = atomic_read(&mport->net.rio_dev_num);
+ void **nptr = NULL;
+ struct rio_dev **dptr = NULL;
+ int i, num = 0;
+
+ if (!items)
+ goto done;
+
+ nptr = kzalloc(sizeof(void *) * items, GFP_KERNEL);
+ if (!nptr)
+ goto err;
+ dptr = kzalloc(sizeof(struct rio_dev *) * items, GFP_KERNEL);
+ if (!dptr)
+ goto err;
+
+ rcu_read_lock();
+retry:
+ num = radix_tree_gang_lookup_slot(&mport->net.dev_tree, (void ***)nptr,
+ NULL, 0, items);
+ if (num > 0) {
+ for (i = 0; i < num; i++) {
+ struct rio_dev *rdev = radix_tree_deref_slot((void **)nptr[i]);
+
+ if (unlikely(!rdev)) {
+ dptr[i] = NULL;
+ continue;
+ }
+ if (radix_tree_deref_retry(rdev))
+ goto retry;
+
+ dptr[i] = rio_dev_get(rdev);
+ }
+ }
+ rcu_read_unlock();
+done:
+ if (nptr != NULL)
+ kfree(nptr);
+ *n = num;
+ return dptr;
+err:
+ if (dptr != NULL)
+ kfree(dptr);
+ dptr = ERR_PTR(-ENOMEM);
+ goto done;
+}
+EXPORT_SYMBOL_GPL(rio_get_all_devices);
+
+int rio_get_err_and_status(struct rio_dev *rdev, int portnum, u32 *err_status)
+{
+ int rc;
+ rc = rio_read_config_32(rdev,
+ rdev->phys_efptr + RIO_PORT_N_ERR_STS_CSR(portnum), err_status);
+ if (rc)
+ pr_debug("RIO: Failed to read RIO_PORT_N_ERR_STS_CSR from device\n");
+ return rc;
+}
+
+/**
+ * rio_is_switch- Tests if a RIO device has switch capabilities
+ * @rdev: RIO device
+ *
+ * Gets the RIO device Processing Element Features register
+ * contents and tests for switch capabilities. Returns 1 if
+ * the device is a switch or 0 if it is not a switch.
+ * The RIO device struct is freed.
+ */
+int rio_is_switch(struct rio_dev *rdev)
+{
+ if (rdev->pef & RIO_PEF_SWITCH)
+ return 1;
+ return 0;
+}
+#ifdef NEW_STYLE
+int rio_type_of_next(struct rio_dev *sw_curr, struct rio_dev *sw_next)
+{
+ if (!sw_next)
+ return RIO_PORT_UNUSED;
+
+ if (rio_is_switch(sw_next)) {
+ rcu_read_lock();
+ if (sw_next->prev_destid != sw_curr->destid
+ || sw_curr == sw_next) {
+ pr_debug("skip redundant path to %s\n", rio_name(sw_next));
+ rcu_read_unlock();
+ return RIO_REDUNDANT_PATH;
+ }
+ rcu_read_unlock();
+ return RIO_SWITCH;
+ }
+ return RIO_END_POINT;
+}
+#else
+int rio_type_of_next(struct rio_dev *sw_curr, struct rio_dev *sw_next)
+{
+ if (!sw_next)
+ return RIO_PORT_UNUSED;
+
+ if (rio_is_switch(sw_next)) {
+ if (sw_next->prev != sw_curr || sw_curr == sw_next) {
+ pr_debug("skip redundant path to %s\n", rio_name(sw_next));
+ return RIO_REDUNDANT_PATH;
+ }
+ return RIO_SWITCH;
+ }
+ return RIO_END_POINT;
+}
+#endif
+/**
+ * rio_map_outb_mem -- Mapping outbound memory.
+ * @mport: RapidIO master port
+ * @win: Outbound ATMU window for this access
+ * - obtained by calling fsl_rio_req_outb_region.
+ * @destid: Destination ID of transaction
+ * @offset: RapidIO space start address.
+ * @res: Mapping region phys and virt start address
+ *
+ * Return: 0 -- Success.
+ *
+ */
+int rio_map_outb_mem(struct rio_mport *mport, u32 win,
+ u16 destid, u32 offset, u32 mflags,
+ struct rio_map_addr *res)
+{
+ int rc = 0;
+
+ if (!mport->mops)
+ return -1;
+ rc = mport->mops->map_outb(mport, win, destid, offset, mflags, res);
+ return rc;
+}
+EXPORT_SYMBOL_GPL(rio_map_outb_mem);
+
+/**
+ * rio_req_outb_region -- Request outbound region in the
+ * RapidIO bus address space.
+ * @mport: RapidIO master port
+ * @size: The mapping region size.
+ * @name: Resource name
+ * @flags: Flags for mapping. 0 for using default flags.
+ * @id: Allocated outbound ATMU window id
+ *
+ * Return: 0 -- Success.
+ *
+ * This function will reserve a memory region that may
+ * be used to create mappings from local iomem to rio space.
+ */
+int rio_req_outb_region(struct rio_mport *mport,
+ resource_size_t size,
+ const char *name,
+ u32 mflags, u32 *win)
+{
+ int rc = 0;
+
+ if (!mport->mops)
+ return -1;
+ rc = mport->mops->req_outb(mport, size, name, mflags, win);
+ return rc;
+}
+EXPORT_SYMBOL_GPL(rio_req_outb_region);
+
+/**
+ * rio_release_outb_region -- Unreserve outbound memory region.
+ * @mport: RapidIO master port
+ * @win: Allocated outbound ATMU window id
+ */
+void rio_release_outb_region(struct rio_mport *mport, u32 win)
+{
+ if (!mport->mops)
+ return;
+ mport->mops->release_outb(mport, win);
+}
+EXPORT_SYMBOL_GPL(rio_release_outb_region);
+
/**
* rio_local_get_device_id - Get the base/extended device id for a port
* @port: RIO master port from which to get the deviceid
@@ -46,10 +272,12 @@ u16 rio_local_get_device_id(struct rio_mport *port)
{
u32 result;
- rio_local_read_config_32(port, RIO_DID_CSR, &result);
+ if (rio_local_read_config_32(port, RIO_DID_CSR, &result))
+ pr_debug("RIO: Failed to read RIO_DID_CSR\n");
- return (RIO_GET_DID(port->sys_size, result));
+ return RIO_GET_DID(port->sys_size, result);
}
+EXPORT_SYMBOL_GPL(rio_local_get_device_id);
/**
* rio_request_inb_mbox - request inbound mailbox service
@@ -66,7 +294,7 @@ int rio_request_inb_mbox(struct rio_mport *mport,
void *dev_id,
int mbox,
int entries,
- void (*minb) (struct rio_mport * mport, void *dev_id, int mbox,
+ void (*minb) (struct rio_mport *mport, void *dev_id, int mbox,
int slot))
{
int rc = -ENOSYS;
@@ -81,9 +309,8 @@ int rio_request_inb_mbox(struct rio_mport *mport,
rio_init_mbox_res(res, mbox, mbox);
/* Make sure this mailbox isn't in use */
- if ((rc =
- request_resource(&mport->riores[RIO_INB_MBOX_RESOURCE],
- res)) < 0) {
+ rc = request_resource(&mport->riores[RIO_INB_MBOX_RESOURCE], res);
+ if (rc < 0) {
kfree(res);
goto out;
}
@@ -97,9 +324,10 @@ int rio_request_inb_mbox(struct rio_mport *mport,
} else
rc = -ENOMEM;
- out:
+out:
return rc;
}
+EXPORT_SYMBOL_GPL(rio_request_inb_mbox);
/**
* rio_release_inb_mbox - release inbound mailbox message service
@@ -119,6 +347,7 @@ int rio_release_inb_mbox(struct rio_mport *mport, int mbox)
} else
return -ENOSYS;
}
+EXPORT_SYMBOL_GPL(rio_release_inb_mbox);
/**
* rio_request_outb_mbox - request outbound mailbox service
@@ -135,7 +364,9 @@ int rio_request_outb_mbox(struct rio_mport *mport,
void *dev_id,
int mbox,
int entries,
- void (*moutb) (struct rio_mport * mport, void *dev_id, int mbox, int slot))
+ int prio,
+ void (*moutb) (struct rio_mport *mport, void *dev_id,
+ int mbox, int slot, void *cookie))
{
int rc = -ENOSYS;
struct resource *res;
@@ -149,9 +380,8 @@ int rio_request_outb_mbox(struct rio_mport *mport,
rio_init_mbox_res(res, mbox, mbox);
/* Make sure this outbound mailbox isn't in use */
- if ((rc =
- request_resource(&mport->riores[RIO_OUTB_MBOX_RESOURCE],
- res)) < 0) {
+ rc = request_resource(&mport->riores[RIO_OUTB_MBOX_RESOURCE], res);
+ if (rc < 0) {
kfree(res);
goto out;
}
@@ -161,13 +391,14 @@ int rio_request_outb_mbox(struct rio_mport *mport,
/* Hook the inbound message callback */
mport->outb_msg[mbox].mcback = moutb;
- rc = mport->ops->open_outb_mbox(mport, dev_id, mbox, entries);
+ rc = mport->ops->open_outb_mbox(mport, dev_id, mbox, entries, prio);
} else
rc = -ENOMEM;
- out:
+out:
return rc;
}
+EXPORT_SYMBOL_GPL(rio_request_outb_mbox);
/**
* rio_release_outb_mbox - release outbound mailbox message service
@@ -187,6 +418,7 @@ int rio_release_outb_mbox(struct rio_mport *mport, int mbox)
} else
return -ENOSYS;
}
+EXPORT_SYMBOL_GPL(rio_release_outb_mbox);
/**
* rio_setup_inb_dbell - bind inbound doorbell callback
@@ -201,13 +433,13 @@ int rio_release_outb_mbox(struct rio_mport *mport, int mbox)
*/
static int
rio_setup_inb_dbell(struct rio_mport *mport, void *dev_id, struct resource *res,
- void (*dinb) (struct rio_mport * mport, void *dev_id, u16 src, u16 dst,
+ void (*dinb) (struct rio_mport *mport, void *dev_id, u16 src, u16 dst,
u16 info))
{
int rc = 0;
struct rio_dbell *dbell;
-
- if (!(dbell = kmalloc(sizeof(struct rio_dbell), GFP_KERNEL))) {
+ dbell = kmalloc(sizeof(struct rio_dbell), GFP_KERNEL);
+ if (!dbell) {
rc = -ENOMEM;
goto out;
}
@@ -218,7 +450,7 @@ rio_setup_inb_dbell(struct rio_mport *mport, void *dev_id, struct resource *res,
list_add_tail(&dbell->node, &mport->dbells);
- out:
+out:
return rc;
}
@@ -238,7 +470,7 @@ int rio_request_inb_dbell(struct rio_mport *mport,
void *dev_id,
u16 start,
u16 end,
- void (*dinb) (struct rio_mport * mport, void *dev_id, u16 src,
+ void (*dinb) (struct rio_mport *mport, void *dev_id, u16 src,
u16 dst, u16 info))
{
int rc = 0;
@@ -249,9 +481,10 @@ int rio_request_inb_dbell(struct rio_mport *mport,
rio_init_dbell_res(res, start, end);
/* Make sure these doorbells aren't in use */
- if ((rc =
- request_resource(&mport->riores[RIO_DOORBELL_RESOURCE],
- res)) < 0) {
+ rc =
+ request_resource(&mport->riores[RIO_DOORBELL_RESOURCE],
+ res);
+ if (rc < 0) {
kfree(res);
goto out;
}
@@ -261,9 +494,10 @@ int rio_request_inb_dbell(struct rio_mport *mport,
} else
rc = -ENOMEM;
- out:
+out:
return rc;
}
+EXPORT_SYMBOL_GPL(rio_request_inb_dbell);
/**
* rio_release_inb_dbell - release inbound doorbell message service
@@ -302,9 +536,10 @@ int rio_release_inb_dbell(struct rio_mport *mport, u16 start, u16 end)
/* Free the doorbell event */
kfree(dbell);
- out:
+out:
return rc;
}
+EXPORT_SYMBOL_GPL(rio_release_inb_dbell);
/**
* rio_request_outb_dbell - request outbound doorbell message range
@@ -333,6 +568,7 @@ struct resource *rio_request_outb_dbell(struct rio_dev *rdev, u16 start,
return res;
}
+EXPORT_SYMBOL_GPL(rio_request_outb_dbell);
/**
* rio_release_outb_dbell - release outbound doorbell message range
@@ -350,6 +586,7 @@ int rio_release_outb_dbell(struct rio_dev *rdev, struct resource *res)
return rc;
}
+EXPORT_SYMBOL_GPL(rio_release_outb_dbell);
/**
* rio_request_inb_pwrite - request inbound port-write message service
@@ -360,7 +597,7 @@ int rio_release_outb_dbell(struct rio_dev *rdev, struct resource *res)
* Returns 0 if the request has been satisfied.
*/
int rio_request_inb_pwrite(struct rio_dev *rdev,
- int (*pwcback)(struct rio_dev *rdev, union rio_pw_msg *msg, int step))
+ int (*pwcback)(struct rio_dev *rdev, union rio_pw_msg *msg, int step))
{
int rc = 0;
@@ -405,22 +642,26 @@ EXPORT_SYMBOL_GPL(rio_release_inb_pwrite);
* @destid: Destination ID of the device
* @hopcount: Number of switch hops to the device
*/
-u32
-rio_mport_get_physefb(struct rio_mport *port, int local,
- u16 destid, u8 hopcount)
-{
+int rio_mport_get_physefb(struct rio_mport *port, int local, u16 destid,
+ u8 hopcount, u32 *physefb) {
u32 ext_ftr_ptr;
u32 ftr_header;
+ int rc = 0;
+ rc = rio_mport_get_efb(port, local, destid, hopcount, 0, &ext_ftr_ptr);
+ if (rc)
+ goto done;
- ext_ftr_ptr = rio_mport_get_efb(port, local, destid, hopcount, 0);
-
- while (ext_ftr_ptr) {
- if (local)
- rio_local_read_config_32(port, ext_ftr_ptr,
- &ftr_header);
- else
- rio_mport_read_config_32(port, destid, hopcount,
- ext_ftr_ptr, &ftr_header);
+ while (ext_ftr_ptr) {
+ if (local) {
+ rc = rio_local_read_config_32(port, ext_ftr_ptr, &ftr_header);
+ if (rc)
+ goto done;
+ } else {
+ rc = rio_mport_read_config_32(port, destid, hopcount,
+ ext_ftr_ptr, &ftr_header);
+ if (rc)
+ goto done;
+ }
ftr_header = RIO_GET_BLOCK_ID(ftr_header);
switch (ftr_header) {
@@ -433,18 +674,22 @@ rio_mport_get_physefb(struct rio_mport *port, int local,
case RIO_EFB_SER_EP_FREE_ID:
case RIO_EFB_SER_EP_FREC_ID:
- return ext_ftr_ptr;
+ goto done;
default:
break;
}
-
- ext_ftr_ptr = rio_mport_get_efb(port, local, destid,
- hopcount, ext_ftr_ptr);
+ rc = rio_mport_get_efb(port, local, destid, hopcount, ext_ftr_ptr,
+ &ext_ftr_ptr);
+ if (rc)
+ goto done;
}
- return ext_ftr_ptr;
+done:
+ *physefb = ext_ftr_ptr;
+ return rc;
}
+EXPORT_SYMBOL_GPL(rio_mport_get_physefb);
/**
* rio_get_comptag - Begin or continue searching for a RIO device by component tag
@@ -458,23 +703,39 @@ rio_mport_get_physefb(struct rio_mport *port, int local,
* @from is not %NULL, searches continue from next device on the global
* list.
*/
-struct rio_dev *rio_get_comptag(u32 comp_tag, struct rio_dev *from)
+struct rio_dev *rio_get_comptag(struct rio_mport *mport, u32 comp_tag)
{
- struct list_head *n;
- struct rio_dev *rdev;
-
- spin_lock(&rio_global_list_lock);
- n = from ? from->global_list.next : rio_devices.next;
-
- while (n && (n != &rio_devices)) {
- rdev = rio_dev_g(n);
- if (rdev->comp_tag == comp_tag)
- goto exit;
- n = n->next;
+ int items = atomic_read(&mport->net.rio_dev_num);
+ void **nptr = kzalloc(sizeof(void *) * items, GFP_KERNEL);
+ int i, num;
+ struct rio_dev *rdev = NULL;
+
+ if (!nptr)
+ return NULL;
+
+ rcu_read_lock();
+retry:
+ num = radix_tree_gang_lookup_slot(&mport->net.dev_tree, (void ***)nptr,
+ NULL, 0, items);
+ if (num > 0) {
+ for (i = 0; i < num; i++) {
+ struct rio_dev *tmp = radix_tree_deref_slot((void **)nptr[i]);
+
+ if (unlikely(!tmp))
+ continue;
+
+ if (radix_tree_deref_retry(tmp))
+ goto retry;
+
+ if (tmp->comp_tag == comp_tag) {
+ rdev = rio_dev_get(tmp);
+ goto done;
+ }
+ }
}
- rdev = NULL;
-exit:
- spin_unlock(&rio_global_list_lock);
+done:
+ rcu_read_unlock();
+ kfree(nptr);
return rdev;
}
@@ -484,66 +745,45 @@ exit:
* @pnum: Switch port number to set LOCKOUT bit
* @lock: Operation : set (=1) or clear (=0)
*/
-int rio_set_port_lockout(struct rio_dev *rdev, u32 pnum, int lock)
+static int
+rio_set_port_lockout(struct rio_dev *rdev, u32 pnum, int lock, int do_lock)
{
+ int rc = 0;
u32 regval;
- rio_read_config_32(rdev,
- rdev->phys_efptr + RIO_PORT_N_CTL_CSR(pnum),
- ®val);
+ if (do_lock)
+ rc = rio_hw_lock_wait(rdev->hport, rdev->destid, rdev->hopcount, 10);
+ if (rc)
+ goto done;
+ rc = rio_read_config_32(rdev,
+ rdev->phys_efptr + RIO_PORT_N_CTL_CSR(pnum), ®val);
+ if (rc)
+ goto rel_lock;
+
if (lock)
regval |= RIO_PORT_N_CTL_LOCKOUT;
else
regval &= ~RIO_PORT_N_CTL_LOCKOUT;
- rio_write_config_32(rdev,
- rdev->phys_efptr + RIO_PORT_N_CTL_CSR(pnum),
- regval);
- return 0;
-}
+ rc = rio_write_config_32(rdev, rdev->phys_efptr + RIO_PORT_N_CTL_CSR(pnum),
+ regval);
-/**
- * rio_chk_dev_route - Validate route to the specified device.
- * @rdev: RIO device failed to respond
- * @nrdev: Last active device on the route to rdev
- * @npnum: nrdev's port number on the route to rdev
- *
- * Follows a route to the specified RIO device to determine the last available
- * device (and corresponding RIO port) on the route.
- */
-static int
-rio_chk_dev_route(struct rio_dev *rdev, struct rio_dev **nrdev, int *npnum)
-{
- u32 result;
- int p_port, rc = -EIO;
- struct rio_dev *prev = NULL;
+ pr_debug("RIO_EM: %s_port_lockout %s port %d addr %8.8x == %8.8x\n",
+ (lock ? "set" : "clear"), rio_name(rdev), pnum,
+ rdev->phys_efptr + RIO_PORT_N_CTL_CSR(pnum), regval);
- /* Find switch with failed RIO link */
- while (rdev->prev && (rdev->prev->pef & RIO_PEF_SWITCH)) {
- if (!rio_read_config_32(rdev->prev, RIO_DEV_ID_CAR, &result)) {
- prev = rdev->prev;
- break;
- }
- rdev = rdev->prev;
+rel_lock:
+ if (do_lock) {
+ if (rc)
+ rio_hw_unlock(rdev->hport, rdev->destid, rdev->hopcount);
+ else
+ rc = rio_hw_unlock(rdev->hport, rdev->destid, rdev->hopcount);
}
-
- if (prev == NULL)
- goto err_out;
-
- p_port = prev->rswitch->route_table[rdev->destid];
-
- if (p_port != RIO_INVALID_ROUTE) {
- pr_debug("RIO: link failed on [%s]-P%d\n",
- rio_name(prev), p_port);
- *nrdev = prev;
- *npnum = p_port;
- rc = 0;
- } else
- pr_debug("RIO: failed to trace route to %s\n", rio_name(rdev));
-err_out:
+done:
return rc;
}
+
/**
* rio_mport_chk_dev_access - Validate access to the specified device.
* @mport: Master port to send transactions
@@ -553,18 +793,10 @@ err_out:
int
rio_mport_chk_dev_access(struct rio_mport *mport, u16 destid, u8 hopcount)
{
- int i = 0;
u32 tmp;
- while (rio_mport_read_config_32(mport, destid, hopcount,
- RIO_DEV_ID_CAR, &tmp)) {
- i++;
- if (i == RIO_MAX_CHK_RETRY)
- return -EIO;
- mdelay(1);
- }
-
- return 0;
+ return rio_mport_read_config_32(mport, destid, hopcount,
+ RIO_DEV_ID_CAR, &tmp);
}
/**
@@ -573,7 +805,7 @@ rio_mport_chk_dev_access(struct rio_mport *mport, u16 destid, u8 hopcount)
*/
static int rio_chk_dev_access(struct rio_dev *rdev)
{
- return rio_mport_chk_dev_access(rdev->net->hport,
+ return rio_mport_chk_dev_access(rdev->hport,
rdev->destid, rdev->hopcount);
}
@@ -585,42 +817,48 @@ static int rio_chk_dev_access(struct rio_dev *rdev)
* @lnkresp: Response from a link partner
*/
static int
-rio_get_input_status(struct rio_dev *rdev, int pnum, u32 *lnkresp)
+rio_get_input_status(struct rio_dev *rdev, int pnum, u32 request, u32 *lnkresp)
{
u32 regval;
int checkcount;
+ int rc = 0;
if (lnkresp) {
/* Read from link maintenance response register
* to clear valid bit */
- rio_read_config_32(rdev,
- rdev->phys_efptr + RIO_PORT_N_MNT_RSP_CSR(pnum),
- ®val);
+ rc = rio_read_config_32(rdev,
+ rdev->phys_efptr + RIO_PORT_N_MNT_RSP_CSR(pnum), ®val);
+ if (rc)
+ goto done;
udelay(50);
}
/* Issue Input-status command */
- rio_write_config_32(rdev,
- rdev->phys_efptr + RIO_PORT_N_MNT_REQ_CSR(pnum),
- RIO_MNT_REQ_CMD_IS);
+ rc = rio_write_config_32(rdev,
+ rdev->phys_efptr + RIO_PORT_N_MNT_REQ_CSR(pnum), request);
+ if (rc)
+ goto done;
/* Exit if the response is not expected */
if (lnkresp == NULL)
- return 0;
+ goto done;
checkcount = 3;
while (checkcount--) {
udelay(50);
- rio_read_config_32(rdev,
- rdev->phys_efptr + RIO_PORT_N_MNT_RSP_CSR(pnum),
- ®val);
+ rc = rio_read_config_32(rdev,
+ rdev->phys_efptr + RIO_PORT_N_MNT_RSP_CSR(pnum), ®val);
+ if (rc)
+ goto done;
if (regval & RIO_PORT_N_MNT_RSP_RVAL) {
*lnkresp = regval;
- return 0;
+ goto done;
}
}
- return -EIO;
+ rc = -EIO;
+done:
+ return rc;
}
/**
@@ -629,87 +867,443 @@ rio_get_input_status(struct rio_dev *rdev, int pnum, u32 *lnkresp)
* @pnum: Switch port number to clear errors
* @err_status: port error status (if 0 reads register from device)
*/
-static int rio_clr_err_stopped(struct rio_dev *rdev, u32 pnum, u32 err_status)
+int
+rio_clr_err_stopped(struct rio_dev *rdev, u32 pnum, u32 err_status, int *success)
{
- struct rio_dev *nextdev = rdev->rswitch->nextdev[pnum];
+ struct rio_dev *nextdev;
u32 regval;
u32 far_ackid, far_linkstat, near_ackid;
+ int rc = 0;
- if (err_status == 0)
- rio_read_config_32(rdev,
- rdev->phys_efptr + RIO_PORT_N_ERR_STS_CSR(pnum),
- &err_status);
+ nextdev = lookup_rdev_next(rdev, pnum);
+ if (IS_ERR(nextdev))
+ nextdev = NULL;
+ rc = rio_hw_lock_wait(rdev->hport, rdev->destid,
+ rdev->hopcount, 10);
+ if (rdev->use_hw_lock && (rc))
+ goto done;
+
+ if (err_status == 0) {
+ rc = rio_get_err_and_status(rdev, pnum, &err_status);
+ if (rc)
+ goto err;
+ }
if (err_status & RIO_PORT_N_ERR_STS_PW_OUT_ES) {
pr_debug("RIO_EM: servicing Output Error-Stopped state\n");
/*
* Send a Link-Request/Input-Status control symbol
*/
- if (rio_get_input_status(rdev, pnum, ®val)) {
+ rc = rio_get_input_status(rdev, pnum, RIO_MNT_REQ_CMD_IS, ®val);
+ if (rc == -EIO) {
pr_debug("RIO_EM: Input-status response timeout\n");
goto rd_err;
+ } else if (rc) {
+ goto err;
}
- pr_debug("RIO_EM: SP%d Input-status response=0x%08x\n",
- pnum, regval);
+ pr_debug("RIO_EM: SP%d Input-status response=0x%08x\n", pnum, regval);
far_ackid = (regval & RIO_PORT_N_MNT_RSP_ASTAT) >> 5;
far_linkstat = regval & RIO_PORT_N_MNT_RSP_LSTAT;
- rio_read_config_32(rdev,
- rdev->phys_efptr + RIO_PORT_N_ACK_STS_CSR(pnum),
- ®val);
+ rc = rio_read_config_32(rdev,
+ rdev->phys_efptr + RIO_PORT_N_ACK_STS_CSR(pnum), ®val);
+ if (rc)
+ goto err;
pr_debug("RIO_EM: SP%d_ACK_STS_CSR=0x%08x\n", pnum, regval);
near_ackid = (regval & RIO_PORT_N_ACK_INBOUND) >> 24;
- pr_debug("RIO_EM: SP%d far_ackID=0x%02x far_linkstat=0x%02x" \
- " near_ackID=0x%02x\n",
- pnum, far_ackid, far_linkstat, near_ackid);
+ pr_debug("RIO_EM: SP%d far_ackID=0x%02x far_linkstat=0x%02x near_ackID=0x%02x\n",
+ pnum, far_ackid, far_linkstat, near_ackid);
/*
* If required, synchronize ackIDs of near and
* far sides.
*/
- if ((far_ackid != ((regval & RIO_PORT_N_ACK_OUTSTAND) >> 8)) ||
- (far_ackid != (regval & RIO_PORT_N_ACK_OUTBOUND))) {
+ if ((far_ackid != ((regval & RIO_PORT_N_ACK_OUTSTAND) >> 8))
+ || (far_ackid != (regval & RIO_PORT_N_ACK_OUTBOUND))) {
/* Align near outstanding/outbound ackIDs with
* far inbound.
*/
- rio_write_config_32(rdev,
- rdev->phys_efptr + RIO_PORT_N_ACK_STS_CSR(pnum),
- (near_ackid << 24) |
- (far_ackid << 8) | far_ackid);
+ rc = rio_write_config_32(rdev,
+ rdev->phys_efptr + RIO_PORT_N_ACK_STS_CSR(pnum),
+ (near_ackid << 24) | (far_ackid << 8) | far_ackid);
+ if (rc)
+ goto err;
/* Align far outstanding/outbound ackIDs with
* near inbound.
*/
far_ackid++;
- if (nextdev)
- rio_write_config_32(nextdev,
- nextdev->phys_efptr +
- RIO_PORT_N_ACK_STS_CSR(RIO_GET_PORT_NUM(nextdev->swpinfo)),
- (far_ackid << 24) |
- (near_ackid << 8) | near_ackid);
- else
+ if (nextdev) {
+ rc = rio_write_config_32(nextdev,
+ nextdev->phys_efptr + RIO_PORT_N_ACK_STS_CSR(
+ RIO_GET_PORT_NUM(nextdev->swpinfo)),
+ (far_ackid << 24) | (near_ackid << 8) | near_ackid);
+ if ((rc))
+ goto err;
+ } else {
pr_debug("RIO_EM: Invalid nextdev pointer (NULL)\n");
+ }
}
rd_err:
- rio_read_config_32(rdev,
- rdev->phys_efptr + RIO_PORT_N_ERR_STS_CSR(pnum),
- &err_status);
+ rc = rio_get_err_and_status(rdev, pnum, &err_status);
+ if (rc)
+ goto err;
pr_debug("RIO_EM: SP%d_ERR_STS_CSR=0x%08x\n", pnum, err_status);
}
if ((err_status & RIO_PORT_N_ERR_STS_PW_INP_ES) && nextdev) {
pr_debug("RIO_EM: servicing Input Error-Stopped state\n");
- rio_get_input_status(nextdev,
- RIO_GET_PORT_NUM(nextdev->swpinfo), NULL);
+ rio_get_input_status(nextdev, RIO_GET_PORT_NUM(nextdev->swpinfo),
+ RIO_MNT_REQ_CMD_IS, NULL);
udelay(50);
-
- rio_read_config_32(rdev,
- rdev->phys_efptr + RIO_PORT_N_ERR_STS_CSR(pnum),
- &err_status);
+ rc = rio_get_err_and_status(rdev, pnum, &err_status);
+ if (rc)
+ goto err;
pr_debug("RIO_EM: SP%d_ERR_STS_CSR=0x%08x\n", pnum, err_status);
}
- return (err_status & (RIO_PORT_N_ERR_STS_PW_OUT_ES |
- RIO_PORT_N_ERR_STS_PW_INP_ES)) ? 1 : 0;
+ *success = (err_status & (RIO_PORT_N_ERR_STS_PW_OUT_ES |
+ RIO_PORT_N_ERR_STS_PW_INP_ES)) ? 0 : 1;
+ goto rel_lock;
+err:
+ pr_debug("RIO_EM: Read/Write Error\n");
+ *success = 0;
+rel_lock:
+ if (rdev->use_hw_lock) {
+ if (rc)
+ rio_hw_unlock(rdev->hport, rdev->destid, rdev->hopcount);
+ else
+ rc = rio_hw_unlock(rdev->hport, rdev->destid, rdev->hopcount);
+ }
+done:
+ if (nextdev)
+ rio_dev_put(nextdev);
+ return rc;
+}
+/**
+ * @brief Brute force sync ackid method
+ *
+ * Send link maint request to LP then configure
+ * near end so that inbound, outstanding and outbound
+ * ackid corresponds to far end next expected ackid.
+ *
+ * This will work as long as far end next expected
+ * inbound == outbound (which is usually the case)
+ *
+ * @note The proper is probably to first sync near
+ * end to far end next expected and then do maint
+ * request to LP to sync far en outbound to near end
+ * inbound. To do that, however, you'd need to know
+ * the phys extended feature ptr offset and the port
+ * number of the LP, and that information is hard to
+ * come by as long as near and far end ackid are not
+ * in sync
+ */
+static int rio_ackid_sync(struct rio_dev *rdev, u32 pnum)
+{
+ struct rio_dev *nextdev;
+ u32 regval;
+ u32 far_ackid, far_linkstat, near_ackid;
+ int rc = 0;
+
+ nextdev = lookup_rdev_next(rdev, pnum);
+ if (IS_ERR(nextdev))
+ nextdev = NULL;
+ rc = rio_hw_lock_wait(rdev->hport, rdev->destid,
+ rdev->hopcount, 10);
+ if (rdev->use_hw_lock && (rc))
+ goto done;
+
+ pr_debug("RIO_EM: Send link request\n");
+ /*
+ * Send a Link-Request/Input-Status control symbol
+ */
+ rc = rio_get_input_status(rdev, pnum, RIO_MNT_REQ_CMD_IS, ®val);
+ if (rc == -EIO) {
+ pr_warn("RIO_EM: Input-status response timeout\n");
+ goto rd_err;
+ } else if (rc) {
+ pr_warn("RIO_EM: Input-status response other err %d\n", rc);
+ goto err;
+ }
+
+ pr_debug("RIO_EM: SP%d Input-status response=0x%08x\n", pnum, regval);
+ far_ackid = (regval & RIO_PORT_N_MNT_RSP_ASTAT) >> 5;
+ far_linkstat = regval & RIO_PORT_N_MNT_RSP_LSTAT;
+ rc = rio_read_config_32(rdev,
+ rdev->phys_efptr + RIO_PORT_N_ACK_STS_CSR(pnum), ®val);
+ if (rc)
+ goto err;
+
+ pr_debug("RIO_EM: SP%d_ACK_STS_CSR=0x%08x\n", pnum, regval);
+ near_ackid = (regval & RIO_PORT_N_ACK_INBOUND) >> 24;
+ pr_debug("RIO_EM: SP%d far_ackID=0x%02x far_linkstat=0x%02x near_ackID=0x%02x\n",
+ pnum, far_ackid, far_linkstat, near_ackid);
+
+ if (far_linkstat != 0x10) {
+ pr_warn("RIO_EM: LP link state 0x%08x\n", far_linkstat);
+ rc = -EIO;
+ goto err;
+ }
+ /*
+ * If required, synchronize ackIDs of near and
+ * far sides.
+ */
+ if ((far_ackid != ((regval & RIO_PORT_N_ACK_OUTSTAND) >> 8))
+ || (far_ackid != (regval & RIO_PORT_N_ACK_OUTBOUND))) {
+ /* Align near outstanding/outbound ackIDs with
+ * far inbound.
+ */
+ rc = rio_write_config_32(rdev,
+ rdev->phys_efptr + RIO_PORT_N_ACK_STS_CSR(pnum),
+ (far_ackid << 24) | (far_ackid << 8) | far_ackid);
+ if (rc)
+ goto err;
+ }
+ goto rel_lock;
+rd_err:
+ rc = rio_get_err_and_status(rdev, pnum, ®val);
+ if (rc)
+ goto err;
+ pr_warn("RIO_EM: SP%d_ERR_STS_CSR=0x%08x\n", pnum, regval);
+ goto rel_lock;
+err:
+ pr_warn("RIO_EM: Read/Write Error\n");
+rel_lock:
+ if (rdev->use_hw_lock) {
+ if (rc)
+ rio_hw_unlock(rdev->hport, rdev->destid, rdev->hopcount);
+ else
+ rc = rio_hw_unlock(rdev->hport, rdev->destid, rdev->hopcount);
+ }
+done:
+ if (nextdev)
+ rio_dev_put(nextdev);
+ return rc;
+}
+
+static int
+rio_pw_dump_msg(union rio_pw_msg *pw_msg)
+{
+#ifdef DEBUG_PW
+ u32 i;
+ for (i = 0; i < RIO_PW_MSG_SIZE/sizeof(u32);) {
+ pr_debug("0x%02x: %08x %08x %08x %08x\n",
+ i * 4, pw_msg->raw[i], pw_msg->raw[i + 1],
+ pw_msg->raw[i + 2], pw_msg->raw[i + 3]);
+ i += 4;
+ }
+#endif
+ return 0;
+}
+
+static int
+rio_handle_local_domain(struct rio_dev *rdev, int portnum, u32 err_status)
+{
+ int rc = 0;
+ u32 em_perrdet, em_ltlerrdet;
+
+ if (rdev->local_domain) {
+ rc = rio_hw_lock_wait(rdev->hport, rdev->destid,
+ rdev->hopcount, 10);
+ if (rdev->use_hw_lock && (rc))
+ goto done;
+ rc = rio_read_config_32(rdev,
+ rdev->em_efptr + RIO_EM_PN_ERR_DETECT(portnum), &em_perrdet);
+ if (rc) {
+ pr_debug(
+ "RIO_PW: Failed to read RIO_EM_PN_ERR_DETECT from device\n");
+ goto rel_lock;
+ }
+ if (em_perrdet) {
+ /* Clear EM Port N Error Detect CSR */
+ rc = rio_write_config_32(rdev,
+ rdev->em_efptr + RIO_EM_PN_ERR_DETECT(portnum), 0);
+ if (rc) {
+ pr_debug(
+ "RIO_PW: Failed to write RIO_EM_PN_ERR_DETECT to device\n");
+ goto rel_lock;
+ }
+ }
+ rc = rio_read_config_32(rdev,
+ rdev->em_efptr + RIO_EM_LTL_ERR_DETECT, &em_ltlerrdet);
+ if (rc) {
+ pr_debug(
+ "RIO_PW: Failed to read RIO_EM_LTL_ERR_DETECT from device\n");
+ goto rel_lock;
+ }
+ if (em_ltlerrdet) {
+ /* Clear EM L/T Layer Error Detect CSR */
+ rc = rio_write_config_32(rdev,
+ rdev->em_efptr + RIO_EM_LTL_ERR_DETECT, 0);
+ if (rc) {
+ pr_debug(
+ "RIO_PW: Failed to write RIO_EM_LTL_ERR_DETECT to device\n");
+ goto rel_lock;
+ }
+ }
+ /* Clear remaining error bits and Port-Write Pending bit */
+ rc = rio_write_config_32(rdev,
+ rdev->phys_efptr + RIO_PORT_N_ERR_STS_CSR(portnum), err_status);
+ if (rc) {
+ pr_debug(
+ "RIO_PW: Failed to write RIO_PORT_N_ERR_STS_CSR to device\n");
+ goto rel_lock;
+ }
+rel_lock:
+ if (rdev->use_hw_lock) {
+ if (rc)
+ rio_hw_unlock(rdev->hport, rdev->destid, rdev->hopcount);
+ else
+ rc = rio_hw_unlock(rdev->hport, rdev->destid, rdev->hopcount);
+ }
+ }
+done:
+ return rc;
+}
+
+static int
+rio_handle_events(struct rio_dev *rdev, int portnum, u32 err_status, int *event)
+{
+ int rc = 0;
+ int success;
+
+ rio_tree_write_lock();
+
+ if (err_status & RIO_PORT_N_ERR_STS_PORT_OK) {
+ pr_debug("RIO: port OK\n");
+ if ((!(rdev->rswitch->port_init & (1 << portnum)))
+ || (!(rdev->rswitch->port_ok & (1 << portnum)))) {
+ rdev->rswitch->port_init |= (1 << portnum);
+ rdev->rswitch->port_ok |= (1 << portnum);
+ if (rdev->local_domain) {
+ rc = rio_set_port_lockout(rdev, portnum, 0, 1);
+ if (rc) {
+ pr_warn("RIO: Failed to set port lockout bit.\n");
+ goto done;
+ }
+ }
+ }
+ /* Schedule Insertion Service */
+ pr_debug("RIO: Device Insertion on [%s]-P%d\n", rio_name(rdev),
+ portnum);
+ *event = RIO_DEVICE_INSERTION;
+
+ if (rdev->local_domain) {
+ /* Clear error-stopped states (if reported).
+ * Depending on the link partner state, two attempts
+ * may be needed for successful recovery.
+ */
+ if (err_status & (RIO_PORT_N_ERR_STS_PW_OUT_ES |
+ RIO_PORT_N_ERR_STS_PW_INP_ES)) {
+ rc = rio_clr_err_stopped(rdev, portnum, err_status, &success);
+ if (rc)
+ goto done;
+ if (!success) {
+ rc = rio_clr_err_stopped(rdev, portnum, 0, &success);
+ if (rc)
+ goto done;
+ }
+ }
+ }
+ } else { /* if (err_status & RIO_PORT_N_ERR_STS_PORT_UNINIT) */
+ if ((!(rdev->rswitch->port_init & (1 << portnum)))
+ || (rdev->rswitch->port_ok & (1 << portnum))) {
+ rdev->rswitch->port_init |= (1 << portnum);
+ rdev->rswitch->port_ok &= ~(1 << portnum);
+ if (rdev->local_domain) {
+ rc = rio_hw_lock_wait(rdev->hport, rdev->destid, rdev->hopcount,
+ 10);
+ if (rdev->use_hw_lock && (rc))
+ goto done;
+ rc = rio_set_port_lockout(rdev, portnum, 1, 0);
+ if (rc) {
+ pr_warn("RIO: Failed to set port lockout bit.\n");
+ if (rdev->use_hw_lock)
+ rio_hw_unlock(rdev->hport, rdev->destid,
+ rdev->hopcount);
+ goto done;
+ }
+ rc = rio_write_config_32(rdev,
+ rdev->phys_efptr + RIO_PORT_N_ACK_STS_CSR(portnum),
+ RIO_PORT_N_ACK_CLEAR);
+ if (rc) {
+ pr_warn(
+ "RIO: Failed to write to RIO_PORT_N_ACK_STS_CSR.\n");
+ if (rdev->use_hw_lock)
+ rio_hw_unlock(rdev->hport, rdev->destid,
+ rdev->hopcount);
+ goto done;
+ }
+ rc = rio_hw_unlock(rdev->hport, rdev->destid, rdev->hopcount);
+ if (rdev->use_hw_lock && (rc))
+ goto done;
+ }
+ }
+ /* Schedule Extraction Service */
+ pr_debug("RIO: Device Extraction on [%s]-P%d\n", rio_name(rdev),
+ portnum);
+ *event = RIO_DEVICE_EXTRACTION;
+ }
+done:
+ rio_tree_write_unlock();
+ return rc;
+}
+static int __rio_setup_event(struct rio_dev *rdev, int portnum, int event)
+{
+ int rc = 0;
+ int tmp_event = 0;
+ u32 err_status;
+
+ rdev = rio_get_by_ptr(rdev);
+ if (!rdev)
+ goto done;
+
+ if (rdev->local_domain) {
+ if (rdev->rswitch->em_handle) {
+ if ((!rdev->use_hw_lock)
+ || (!rio_hw_lock_wait(rdev->hport, rdev->destid,
+ rdev->hopcount, 10))) {
+ rdev->rswitch->em_handle(rdev, portnum);
+ if (rdev->use_hw_lock)
+ rio_hw_unlock(rdev->hport, rdev->destid, rdev->hopcount);
+ }
+ }
+ }
+ rc = rio_get_err_and_status(rdev, portnum, &err_status);
+ if (rc)
+ goto rel_dev;
+ pr_debug("port %d RIO_PORT_N_ERR_STS_CSR 0x%x\n", portnum, err_status);
+ rc = rio_handle_events(rdev, portnum, err_status, &tmp_event);
+ if (rc)
+ goto rel_dev;
+
+ if (tmp_event != event) {
+ rc = 1;
+ if (event == RIO_DEVICE_EXTRACTION)
+ pr_err("RIO: Removal of not reseted device is not allowed.\n");
+ else
+ pr_err("RIO: Insertion of device on not ok port is not allowed.\n");
+ goto rel_dev;
+ }
+ rc = rio_handle_local_domain(rdev, portnum, err_status);
+ if (rc)
+ goto rel_dev;
+
+rel_dev:
+ rio_dev_put(rdev);
+done:
+ return rc;
+}
+int rio_setup_event(struct rio_dev *rdev, int portnum, int event)
+{
+ return __rio_setup_event(rdev, portnum, event);
+}
+int rio_setup_event_force(struct rio_dev *rdev, int portnum, int event)
+{
+ int rc = __rio_setup_event(rdev, portnum, event);
+ if (!rc && (event == RIO_DEVICE_INSERTION))
+ rio_ackid_sync(rdev, portnum);
+ return rc;
}
/**
@@ -719,33 +1313,26 @@ rd_err:
* Processes an inbound port-write message. Returns 0 if the request
* has been satisfied.
*/
-int rio_inb_pwrite_handler(union rio_pw_msg *pw_msg)
+int
+rio_inb_pwrite_handler(struct rio_mport *mport, union rio_pw_msg *pw_msg)
{
struct rio_dev *rdev;
- u32 err_status, em_perrdet, em_ltlerrdet;
- int rc, portnum;
+ int rc = 0;
+ int portnum;
+
+ pr_debug("RIO-EM: --- %s ---\n", __func__);
- rdev = rio_get_comptag((pw_msg->em.comptag & RIO_CTAG_UDEVID), NULL);
+ rdev = rio_get_comptag(mport, (pw_msg->em.comptag & RIO_CTAG_UDEVID));
if (rdev == NULL) {
/* Device removed or enumeration error */
- pr_debug("RIO: %s No matching device for CTag 0x%08x\n",
- __func__, pw_msg->em.comptag);
- return -EIO;
+ pr_debug("RIO_PW: %s No matching device for CTag 0x%08x\n", __func__,
+ pw_msg->em.comptag);
+ rc = -EIO;
+ goto done;
}
+ pr_debug("RIO_PW: Port-Write message from %s\n", rio_name(rdev));
- pr_debug("RIO: Port-Write message from %s\n", rio_name(rdev));
-
-#ifdef DEBUG_PW
- {
- u32 i;
- for (i = 0; i < RIO_PW_MSG_SIZE/sizeof(u32);) {
- pr_debug("0x%02x: %08x %08x %08x %08x\n",
- i*4, pw_msg->raw[i], pw_msg->raw[i + 1],
- pw_msg->raw[i + 2], pw_msg->raw[i + 3]);
- i += 4;
- }
- }
-#endif
+ rio_pw_dump_msg(pw_msg);
/* Call an external service function (if such is registered
* for this device). This may be the service for endpoints that send
@@ -756,7 +1343,7 @@ int rio_inb_pwrite_handler(union rio_pw_msg *pw_msg)
if (rdev->pwcback != NULL) {
rc = rdev->pwcback(rdev, pw_msg, 0);
if (rc == 0)
- return 0;
+ goto rel_dev;
}
portnum = pw_msg->em.is_port & 0xFF;
@@ -766,102 +1353,61 @@ int rio_inb_pwrite_handler(union rio_pw_msg *pw_msg)
* powered down (or link being lost).
*/
if (rio_chk_dev_access(rdev)) {
- pr_debug("RIO: device access failed - get link partner\n");
- /* Scan route to the device and identify failed link.
- * This will replace device and port reported in PW message.
- * PW message should not be used after this point.
- */
- if (rio_chk_dev_route(rdev, &rdev, &portnum)) {
- pr_err("RIO: Route trace for %s failed\n",
- rio_name(rdev));
- return -EIO;
- }
- pw_msg = NULL;
+ pr_debug("RIO_PW: device access failed\n");
+ rc = -EIO;
+ goto rel_dev;
}
/* For End-point devices processing stops here */
if (!(rdev->pef & RIO_PEF_SWITCH))
- return 0;
+ goto rel_dev;
- if (rdev->phys_efptr == 0) {
- pr_err("RIO_PW: Bad switch initialization for %s\n",
- rio_name(rdev));
- return 0;
+ if (!rdev->phys_efptr) {
+ pr_err("RIO_PW: Bad switch initialization for %s\n", rio_name(rdev));
+ goto rel_dev;
}
- /*
- * Process the port-write notification from switch
- */
- if (rdev->rswitch->em_handle)
- rdev->rswitch->em_handle(rdev, portnum);
-
- rio_read_config_32(rdev,
- rdev->phys_efptr + RIO_PORT_N_ERR_STS_CSR(portnum),
- &err_status);
- pr_debug("RIO_PW: SP%d_ERR_STS_CSR=0x%08x\n", portnum, err_status);
-
- if (err_status & RIO_PORT_N_ERR_STS_PORT_OK) {
-
- if (!(rdev->rswitch->port_ok & (1 << portnum))) {
- rdev->rswitch->port_ok |= (1 << portnum);
- rio_set_port_lockout(rdev, portnum, 0);
- /* Schedule Insertion Service */
- pr_debug("RIO_PW: Device Insertion on [%s]-P%d\n",
- rio_name(rdev), portnum);
- }
-
- /* Clear error-stopped states (if reported).
- * Depending on the link partner state, two attempts
- * may be needed for successful recovery.
+ if (rdev->local_domain) {
+ /* Process the port-write notification from switch
*/
- if (err_status & (RIO_PORT_N_ERR_STS_PW_OUT_ES |
- RIO_PORT_N_ERR_STS_PW_INP_ES)) {
- if (rio_clr_err_stopped(rdev, portnum, err_status))
- rio_clr_err_stopped(rdev, portnum, 0);
- }
- } else { /* if (err_status & RIO_PORT_N_ERR_STS_PORT_UNINIT) */
-
- if (rdev->rswitch->port_ok & (1 << portnum)) {
- rdev->rswitch->port_ok &= ~(1 << portnum);
- rio_set_port_lockout(rdev, portnum, 1);
-
- rio_write_config_32(rdev,
- rdev->phys_efptr +
- RIO_PORT_N_ACK_STS_CSR(portnum),
- RIO_PORT_N_ACK_CLEAR);
-
- /* Schedule Extraction Service */
- pr_debug("RIO_PW: Device Extraction on [%s]-P%d\n",
- rio_name(rdev), portnum);
- }
+ if (rdev->rswitch->em_handle)
+ rdev->rswitch->em_handle(rdev, portnum);
}
- rio_read_config_32(rdev,
- rdev->em_efptr + RIO_EM_PN_ERR_DETECT(portnum), &em_perrdet);
- if (em_perrdet) {
- pr_debug("RIO_PW: RIO_EM_P%d_ERR_DETECT=0x%08x\n",
- portnum, em_perrdet);
- /* Clear EM Port N Error Detect CSR */
- rio_write_config_32(rdev,
- rdev->em_efptr + RIO_EM_PN_ERR_DETECT(portnum), 0);
- }
+#if !defined(CONFIG_RAPIDIO_HOTPLUG)
+ /**
+ * FIXME!
+ * Temporary fix to make ulma booting on DUL work
+ * with the old version of the ulma driver for DUL
+ * which is not adopted to hotplug
+ * Maybe we should do this anyway if user don't define
+ * hotplug - to keep the same level of PW handling as
+ * in original RIO driver - i.e. call rio_setup_event,
+ * not the rest obviously.
+ */
+ {
+ u32 err_status;
+ int event = 0;
+ rc = rio_get_err_and_status(rdev, portnum, &err_status);
+ if (rc)
+ goto rel_dev;
+
+ if (err_status & RIO_PORT_N_ERR_STS_PORT_OK)
+ event = RIO_DEVICE_INSERTION;
+ else
+ event = RIO_DEVICE_EXTRACTION;
- rio_read_config_32(rdev,
- rdev->em_efptr + RIO_EM_LTL_ERR_DETECT, &em_ltlerrdet);
- if (em_ltlerrdet) {
- pr_debug("RIO_PW: RIO_EM_LTL_ERR_DETECT=0x%08x\n",
- em_ltlerrdet);
- /* Clear EM L/T Layer Error Detect CSR */
- rio_write_config_32(rdev,
- rdev->em_efptr + RIO_EM_LTL_ERR_DETECT, 0);
- }
+ rc = rio_setup_event(rdev, portnum, event);
- /* Clear remaining error bits and Port-Write Pending bit */
- rio_write_config_32(rdev,
- rdev->phys_efptr + RIO_PORT_N_ERR_STS_CSR(portnum),
- err_status);
+ if (rdev->pwcback != NULL && rc == 0)
+ (void) rdev->pwcback(rdev, pw_msg, event);
+ }
+#endif
- return 0;
+rel_dev:
+ rio_dev_put(rdev);
+done:
+ return rc;
}
EXPORT_SYMBOL_GPL(rio_inb_pwrite_handler);
@@ -874,28 +1420,31 @@ EXPORT_SYMBOL_GPL(rio_inb_pwrite_handler);
* @from: Offset of current Extended Feature block header (if 0 starts
* from ExtFeaturePtr)
*/
-u32
-rio_mport_get_efb(struct rio_mport *port, int local, u16 destid,
- u8 hopcount, u32 from)
-{
+int rio_mport_get_efb(struct rio_mport *port, int local, u16 destid,
+ u8 hopcount, u32 from, u32 *ext_ftr_ptr) {
u32 reg_val;
+ int rc = 0;
if (from == 0) {
if (local)
- rio_local_read_config_32(port, RIO_ASM_INFO_CAR,
- ®_val);
+ rc = rio_local_read_config_32(port, RIO_ASM_INFO_CAR, ®_val);
else
- rio_mport_read_config_32(port, destid, hopcount,
- RIO_ASM_INFO_CAR, ®_val);
- return reg_val & RIO_EXT_FTR_PTR_MASK;
+ rc = rio_mport_read_config_32(port, destid, hopcount,
+ RIO_ASM_INFO_CAR, ®_val);
+ if (!rc)
+ *ext_ftr_ptr = reg_val & RIO_EXT_FTR_PTR_MASK;
} else {
if (local)
- rio_local_read_config_32(port, from, ®_val);
+ rc = rio_local_read_config_32(port, from, ®_val);
else
- rio_mport_read_config_32(port, destid, hopcount,
- from, ®_val);
- return RIO_GET_BLOCK_ID(reg_val);
+ rc = rio_mport_read_config_32(port, destid, hopcount, from,
+ ®_val);
+ if (!rc)
+ *ext_ftr_ptr = RIO_GET_BLOCK_ID(reg_val);
}
+ if (rc)
+ *ext_ftr_ptr = 0;
+ return rc;
}
/**
@@ -924,36 +1473,45 @@ rio_mport_get_efb(struct rio_mport *port, int local, u16 destid,
*
* %RIO_EFB_SER_EP_FREE_ID LP/Serial EP Free Devices
*/
-u32
-rio_mport_get_feature(struct rio_mport * port, int local, u16 destid,
- u8 hopcount, int ftr)
-{
- u32 asm_info, ext_ftr_ptr, ftr_header;
+int rio_mport_get_feature(struct rio_mport *port, int local, u16 destid,
+ u8 hopcount, int ftr, u32 *feature) {
+ u32 asm_info, ext_ftr_ptr = 0, ftr_header;
+ int rc = 0;
- if (local)
- rio_local_read_config_32(port, RIO_ASM_INFO_CAR, &asm_info);
- else
- rio_mport_read_config_32(port, destid, hopcount,
- RIO_ASM_INFO_CAR, &asm_info);
+ if (local) {
+ rc = rio_local_read_config_32(port, RIO_ASM_INFO_CAR, &asm_info);
+ if (rc)
+ goto done;
+ } else {
+ rc = rio_mport_read_config_32(port, destid, hopcount,
+ RIO_ASM_INFO_CAR, &asm_info);
+ if (rc)
+ goto done;
+ }
ext_ftr_ptr = asm_info & RIO_EXT_FTR_PTR_MASK;
while (ext_ftr_ptr) {
- if (local)
- rio_local_read_config_32(port, ext_ftr_ptr,
- &ftr_header);
- else
- rio_mport_read_config_32(port, destid, hopcount,
- ext_ftr_ptr, &ftr_header);
+ if (local) {
+ rc = rio_local_read_config_32(port, ext_ftr_ptr, &ftr_header);
+ if (rc)
+ goto done;
+ } else {
+ rc = rio_mport_read_config_32(port, destid, hopcount,
+ ext_ftr_ptr, &ftr_header);
+ if (rc)
+ goto done;
+ }
if (RIO_GET_BLOCK_ID(ftr_header) == ftr)
- return ext_ftr_ptr;
- if (!(ext_ftr_ptr = RIO_GET_BLOCK_PTR(ftr_header)))
+ goto done;
+ ext_ftr_ptr = RIO_GET_BLOCK_PTR(ftr_header);
+ if (!ext_ftr_ptr)
break;
}
-
- return 0;
+done:
+ *feature = ext_ftr_ptr;
+ return rc;
}
-
/**
* rio_get_asm - Begin or continue searching for a RIO device by vid/did/asm_vid/asm_did
* @vid: RIO vid to match or %RIO_ANY_ID to match all vids
@@ -974,29 +1532,57 @@ rio_mport_get_feature(struct rio_mport * port, int local, u16 destid,
struct rio_dev *rio_get_asm(u16 vid, u16 did,
u16 asm_vid, u16 asm_did, struct rio_dev *from)
{
- struct list_head *n;
- struct rio_dev *rdev;
-
- WARN_ON(in_interrupt());
- spin_lock(&rio_global_list_lock);
- n = from ? from->global_list.next : rio_devices.next;
-
- while (n && (n != &rio_devices)) {
- rdev = rio_dev_g(n);
- if ((vid == RIO_ANY_ID || rdev->vid == vid) &&
- (did == RIO_ANY_ID || rdev->did == did) &&
- (asm_vid == RIO_ANY_ID || rdev->asm_vid == asm_vid) &&
- (asm_did == RIO_ANY_ID || rdev->asm_did == asm_did))
- goto exit;
- n = n->next;
+ struct rio_mport *mport = (from ? from->hport : rio_get_mport(RIO_ANY_ID, NULL));
+ int items;
+ void **nptr;
+ int i, num;
+ struct rio_dev *rdev = NULL;
+ unsigned long key = (from ? from->destid : 0);
+
+ rcu_read_lock();
+ while (mport) {
+ items = atomic_read(&mport->net.rio_dev_num);
+ if (!items) {
+ rcu_read_unlock();
+ return NULL;
+ }
+ nptr = kzalloc(sizeof(void *) * items, GFP_KERNEL);
+ if (!nptr) {
+ rcu_read_unlock();
+ return NULL;
+ }
+retry:
+ num = radix_tree_gang_lookup_slot(&mport->net.dev_tree, (void ***)nptr,
+ NULL, key, items);
+ if (num > 0) {
+ for (i = 0; i < num; i++) {
+ rdev = radix_tree_deref_slot((void **)nptr[i]);
+ if (unlikely(!rdev))
+ continue;
+ if (radix_tree_deref_retry(rdev))
+ goto retry;
+ if (rdev == from)
+ continue;
+ if ((vid == RIO_ANY_ID || rdev->vid == vid) &&
+ (did == RIO_ANY_ID || rdev->did == did) &&
+ (asm_vid == RIO_ANY_ID || rdev->asm_vid == asm_vid) &&
+ (asm_did == RIO_ANY_ID || rdev->asm_did == asm_did)) {
+ kfree(nptr);
+ goto done;
+ }
+ }
+ }
+ kfree(nptr);
+ mport = rio_get_mport(RIO_ANY_ID, mport);
}
rdev = NULL;
- exit:
+done:
rio_dev_put(from);
rdev = rio_dev_get(rdev);
- spin_unlock(&rio_global_list_lock);
+ rcu_read_unlock();
return rdev;
}
+EXPORT_SYMBOL_GPL(rio_get_asm);
/**
* rio_get_device - Begin or continue searching for a RIO device by vid/did
@@ -1016,6 +1602,7 @@ struct rio_dev *rio_get_device(u16 vid, u16 did, struct rio_dev *from)
{
return rio_get_asm(vid, did, RIO_ANY_ID, RIO_ANY_ID, from);
}
+EXPORT_SYMBOL_GPL(rio_get_device);
/**
* rio_std_route_add_entry - Add switch route table entry using standard
@@ -1028,19 +1615,22 @@ struct rio_dev *rio_get_device(u16 vid, u16 did, struct rio_dev *from)
* @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)
-{
+ u16 table, u16 route_destid, u8 route_port) {
+ int rc = 0;
if (table == RIO_GLOBAL_TABLE) {
- rio_mport_write_config_32(mport, destid, hopcount,
- RIO_STD_RTE_CONF_DESTID_SEL_CSR,
- (u32)route_destid);
- rio_mport_write_config_32(mport, destid, hopcount,
- RIO_STD_RTE_CONF_PORT_SEL_CSR,
- (u32)route_port);
+ rc = rio_mport_write_config_32(mport, destid, hopcount,
+ RIO_STD_RTE_CONF_DESTID_SEL_CSR, (u32) route_destid);
+ if (rc)
+ goto done;
+ rc = rio_mport_write_config_32(mport, destid, hopcount,
+ RIO_STD_RTE_CONF_PORT_SEL_CSR, (u32) route_port);
+ if (rc)
+ goto done;
}
udelay(10);
- return 0;
+done:
+ return rc;
}
/**
@@ -1054,21 +1644,27 @@ 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)
+int
+rio_std_route_get_entry(struct rio_mport *mport, u16 destid, u8 hopcount,
+ u16 table, u16 route_destid, u8 *route_port)
{
- u32 result;
+ u32 result = 0;
+ int rc = 0;
if (table == RIO_GLOBAL_TABLE) {
- rio_mport_write_config_32(mport, destid, hopcount,
+ rc = rio_mport_write_config_32(mport, destid, hopcount,
RIO_STD_RTE_CONF_DESTID_SEL_CSR, route_destid);
- rio_mport_read_config_32(mport, destid, hopcount,
+ if (rc)
+ goto done;
+ rc = rio_mport_read_config_32(mport, destid, hopcount,
RIO_STD_RTE_CONF_PORT_SEL_CSR, &result);
+ if (rc)
+ goto done;
- *route_port = (u8)result;
+ *route_port = (u8) result;
}
-
- return 0;
+done:
+ return rc;
}
/**
@@ -1079,46 +1675,53 @@ 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)
+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;
u32 port_sel = RIO_INVALID_ROUTE;
+ int rc = 0;
if (table == RIO_GLOBAL_TABLE) {
- rio_mport_read_config_32(mport, destid, hopcount,
- RIO_PEF_CAR, &pef);
+ rc = rio_mport_read_config_32(mport, destid, hopcount,
+ RIO_PEF_CAR, &pef);
+ if (rc)
+ goto done;
if (mport->sys_size) {
- rio_mport_read_config_32(mport, destid, hopcount,
- RIO_SWITCH_RT_LIMIT,
- &max_destid);
+ rc = rio_mport_read_config_32(mport, destid, hopcount,
+ RIO_SWITCH_RT_LIMIT, &max_destid);
+ if (rc)
+ goto done;
max_destid &= RIO_RT_MAX_DESTID;
}
if (pef & RIO_PEF_EXT_RT) {
ext_cfg = 0x80000000;
id_inc = 4;
- port_sel = (RIO_INVALID_ROUTE << 24) |
- (RIO_INVALID_ROUTE << 16) |
- (RIO_INVALID_ROUTE << 8) |
- RIO_INVALID_ROUTE;
+ port_sel = (RIO_INVALID_ROUTE << 24) | (RIO_INVALID_ROUTE << 16)
+ | (RIO_INVALID_ROUTE << 8) |
+ RIO_INVALID_ROUTE;
}
for (i = 0; i <= max_destid;) {
- rio_mport_write_config_32(mport, destid, hopcount,
- RIO_STD_RTE_CONF_DESTID_SEL_CSR,
- ext_cfg | i);
- rio_mport_write_config_32(mport, destid, hopcount,
- RIO_STD_RTE_CONF_PORT_SEL_CSR,
- port_sel);
+ rc = rio_mport_write_config_32(mport, destid, hopcount,
+ RIO_STD_RTE_CONF_DESTID_SEL_CSR, ext_cfg | i);
+ if (rc)
+ goto done;
+ rc = rio_mport_write_config_32(mport, destid, hopcount,
+ RIO_STD_RTE_CONF_PORT_SEL_CSR, port_sel);
+ if (rc)
+ goto done;
i += id_inc;
}
}
+done:
udelay(10);
- return 0;
+ return rc;
}
static void rio_fixup_device(struct rio_dev *dev)
@@ -1129,21 +1732,20 @@ static int __devinit rio_init(void)
{
struct rio_dev *dev = NULL;
- while ((dev = rio_get_device(RIO_ANY_ID, RIO_ANY_ID, dev)) != NULL) {
+ while ((dev = rio_get_device(RIO_ANY_ID, RIO_ANY_ID, dev)) != NULL)
rio_fixup_device(dev);
- }
return 0;
}
-
+/**
+ * @note No lock; Assuming this is used at boot time only,
+ * before start of user space
+ */
int __devinit rio_init_mports(void)
{
struct rio_mport *port;
list_for_each_entry(port, &rio_mports, node) {
- if (port->host_deviceid >= 0)
- rio_enum_mport(port);
- else
- rio_disc_mport(port);
+ rio_job_init(port, NULL, -1, 0, 1, RIO_DEVICE_INSERTION);
}
rio_init();
@@ -1171,27 +1773,75 @@ static int rio_hdid_setup(char *str)
__setup("riohdid=", rio_hdid_setup);
+#if defined(CONFIG_RAPIDIO_STATIC_DESTID) || defined(CONFIG_RAPIDIO_HOTPLUG)
+
+static void rio_add_mport_device(struct rio_mport *mport)
+{
+ dev_set_name(&mport->dev, "mport:%04x", mport->id);
+ mport->dev.bus = NULL;
+ mport->dev.parent = &rio_bus;
+
+ if (device_register(&mport->dev))
+ pr_warn("RIO: mport device register failure\n");
+ else {
+ rio_destid_sysfs_init(mport);
+ rio_sysfs_init(mport);
+ }
+}
+#else
+static inline void rio_add_mport_device(struct rio_mport *port) {}
+#endif
+
+struct rio_net *rio_get_mport_net(struct rio_mport *port)
+{
+ return &port->net;
+}
+
+struct rio_mport *rio_get_mport(int hostid, struct rio_mport *from)
+{
+ struct rio_mport *port;
+ struct list_head *n;
+
+ if (list_empty(&rio_mports))
+ return NULL;
+
+ n = from ? from->node.next : rio_mports.next;
+ while (n && (n != &rio_mports)) {
+ port = list_entry(n, struct rio_mport, node);
+ if (hostid == RIO_ANY_ID || hostid == port->host_deviceid)
+ return port;
+ n = n->next;
+ }
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(rio_get_mport);
+
+
int rio_register_mport(struct rio_mport *port)
{
if (next_portid >= RIO_MAX_MPORTS) {
pr_err("RIO: reached specified max number of mports\n");
return 1;
}
-
port->id = next_portid++;
port->host_deviceid = rio_get_hdid(port->id);
+#ifndef CONFIG_RAPIDIO_STATIC_DESTID
+ if (port->host_deviceid == 0xb)
+ port->host_deviceid = RIO_ANY_ID;
+#endif
+
+#ifdef NEW_STYLE
+ INIT_RADIX_TREE(&port->net.dev_tree, GFP_KERNEL);
+ INIT_RADIX_TREE(&port->net.dst_tree, GFP_KERNEL);
+ atomic_set(&port->net.rio_dev_num, 0);
+ atomic_set(&port->net.rio_dst_num, 0);
+ atomic_set(&port->net.rio_max_dest, 0);
+ spin_lock_init(&port->net.tree_lock);
+#else
+ INIT_LIST_HEAD(&port->net.devices);
+#endif
+ rio_add_mport_device(port);
list_add_tail(&port->node, &rio_mports);
return 0;
}
-
-EXPORT_SYMBOL_GPL(rio_local_get_device_id);
-EXPORT_SYMBOL_GPL(rio_get_device);
-EXPORT_SYMBOL_GPL(rio_get_asm);
-EXPORT_SYMBOL_GPL(rio_request_inb_dbell);
-EXPORT_SYMBOL_GPL(rio_release_inb_dbell);
-EXPORT_SYMBOL_GPL(rio_request_outb_dbell);
-EXPORT_SYMBOL_GPL(rio_release_outb_dbell);
-EXPORT_SYMBOL_GPL(rio_request_inb_mbox);
-EXPORT_SYMBOL_GPL(rio_release_inb_mbox);
-EXPORT_SYMBOL_GPL(rio_request_outb_mbox);
-EXPORT_SYMBOL_GPL(rio_release_outb_mbox);
+EXPORT_SYMBOL_GPL(rio_register_mport);
diff --git a/drivers/rapidio/rio.h b/drivers/rapidio/rio.h
index b1af414..6dceaa6 100644
--- a/drivers/rapidio/rio.h
+++ b/drivers/rapidio/rio.h
@@ -11,24 +11,46 @@
*/
#include <linux/device.h>
+#include <linux/export.h>
+#include <linux/rwsem.h>
#include <linux/list.h>
#include <linux/rio.h>
+#include "rio-hotplug.h"
+#include "rio-multicast.h"
+#include "rio-destid.h"
+#include "rio-job.h"
+#include "rio-locks.h"
+#include "rio-net.h"
+#include "rio-route.h"
+
#define RIO_MAX_CHK_RETRY 3
+#define RIO_PORT_UNUSED 0
+#define RIO_REDUNDANT_PATH 1
+#define RIO_END_POINT 2
+#define RIO_SWITCH 3
+
/* Functions internal to the RIO core code */
+extern struct rio_dev **rio_get_tagged_devices(struct rio_mport *mport,
+ int tag, int *n);
-extern u32 rio_mport_get_feature(struct rio_mport *mport, int local, u16 destid,
- u8 hopcount, int ftr);
-extern u32 rio_mport_get_physefb(struct rio_mport *port, int local,
- u16 destid, u8 hopcount);
-extern u32 rio_mport_get_efb(struct rio_mport *port, int local, u16 destid,
- u8 hopcount, u32 from);
+extern int rio_type_of_next(struct rio_dev *sw_curr, struct rio_dev *sw_next);
+extern int rio_is_switch(struct rio_dev *rdev);
+extern int rio_get_err_and_status(struct rio_dev *rdev,
+ int portnum, u32 *err_status);
+extern int rio_mport_get_feature(struct rio_mport *port,
+ int local, u16 destid,
+ u8 hopcount, int ftr, u32 *feature);
+extern int rio_mport_get_physefb(struct rio_mport *port, int local,
+ u16 destid, u8 hopcount, u32 *physefb);
+extern int rio_mport_get_efb(struct rio_mport *port, int local, u16 destid,
+ u8 hopcount, u32 from, u32 *ext_ftr_ptr);
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_enum_mport(struct rio_mport *mport);
-extern int rio_disc_mport(struct rio_mport *mport);
+extern void rio_remove_sysfs_dev_files(struct rio_dev *rdev);
+extern int rio_sysfs_init(struct rio_mport *mport);
extern int rio_std_route_add_entry(struct rio_mport *mport, u16 destid,
u8 hopcount, u16 table, u16 route_destid,
u8 route_port);
@@ -37,16 +59,27 @@ extern int rio_std_route_get_entry(struct rio_mport *mport, u16 destid,
u8 *route_port);
extern int rio_std_route_clr_table(struct rio_mport *mport, u16 destid,
u8 hopcount, u16 table);
-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 struct rio_dev *rio_get_comptag(struct rio_mport *mport, u32 comp_tag);
+extern int rio_clr_err_stopped(struct rio_dev *rdev, u32 pnum,
+ u32 err_status, int *success);
+extern struct rio_net *rio_get_mport_net(struct rio_mport *port);
+/* extern int rio_setup_event(struct rio_dev *rdev, int portnum, int event);*/
/* Structures internal to the RIO core code */
+extern struct list_head rio_switches;
+extern struct list_head rio_mports;
extern struct device_attribute rio_dev_attrs[];
extern spinlock_t rio_global_list_lock;
extern struct rio_switch_ops __start_rio_switch_ops[];
extern struct rio_switch_ops __end_rio_switch_ops[];
+extern struct rio_dev_fixup __start_rio_dev_fixup_early[];
+extern struct rio_dev_fixup __end_rio_dev_fixup_early[];
+extern struct rio_dev_fixup __start_rio_dev_fixup_enable[];
+extern struct rio_dev_fixup __end_rio_dev_fixup_enable[];
+
+
/* 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 \
@@ -68,5 +101,7 @@ extern struct rio_switch_ops __end_rio_switch_ops[];
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))
+#define RIO_GET_DID(size, x) (size ? (x & 0xffff) : \
+ ((x & 0x00ff0000) >> 16))
+#define RIO_SET_DID(size, x) (size ? (x & 0xffff) : \
+ ((x & 0x000000ff) << 16))
--
1.7.9.5
More information about the linux-yocto
mailing list