* option) any later version.
*/
-#include <linux/config.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/delay.h>
+#include <linux/dma-mapping.h>
#include <linux/init.h>
#include <linux/rio.h>
#include <linux/rio_drv.h>
#include <linux/module.h>
#include <linux/spinlock.h>
#include <linux/timer.h>
+#include <linux/jiffies.h>
+#include <linux/slab.h>
#include "rio.h"
static void rio_enum_timeout(unsigned long);
-spinlock_t rio_global_list_lock = SPIN_LOCK_UNLOCKED;
+DEFINE_SPINLOCK(rio_global_list_lock);
+
static int next_destid = 0;
static int next_switchid = 0;
static int next_net = 0;
-1,
};
-extern struct rio_route_ops __start_rio_route_ops[];
-extern struct rio_route_ops __end_rio_route_ops[];
-
/**
* rio_get_device_id - Get the base/extended device id for a device
* @port: RIO master port
*
* Writes the base/extended device id from a device.
*/
-static void
-rio_set_device_id(struct rio_mport *port, u16 destid, u8 hopcount, u16 did)
+static void rio_set_device_id(struct rio_mport *port, u16 destid, u8 hopcount, u16 did)
{
rio_mport_write_config_32(port, destid, hopcount, RIO_DID_CSR,
RIO_SET_DID(did));
static int rio_device_has_destid(struct rio_mport *port, int src_ops,
int dst_ops)
{
- if (((src_ops & RIO_SRC_OPS_READ) ||
- (src_ops & RIO_SRC_OPS_WRITE) ||
- (src_ops & RIO_SRC_OPS_ATOMIC_TST_SWP) ||
- (src_ops & RIO_SRC_OPS_ATOMIC_INC) ||
- (src_ops & RIO_SRC_OPS_ATOMIC_DEC) ||
- (src_ops & RIO_SRC_OPS_ATOMIC_SET) ||
- (src_ops & RIO_SRC_OPS_ATOMIC_CLR)) &&
- ((dst_ops & RIO_DST_OPS_READ) ||
- (dst_ops & RIO_DST_OPS_WRITE) ||
- (dst_ops & RIO_DST_OPS_ATOMIC_TST_SWP) ||
- (dst_ops & RIO_DST_OPS_ATOMIC_INC) ||
- (dst_ops & RIO_DST_OPS_ATOMIC_DEC) ||
- (dst_ops & RIO_DST_OPS_ATOMIC_SET) ||
- (dst_ops & RIO_DST_OPS_ATOMIC_CLR))) {
- return 1;
- } else
- return 0;
+ u32 mask = RIO_OPS_READ | RIO_OPS_WRITE | RIO_OPS_ATOMIC_TST_SWP | RIO_OPS_ATOMIC_INC | RIO_OPS_ATOMIC_DEC | RIO_OPS_ATOMIC_SET | RIO_OPS_ATOMIC_CLR;
+
+ return !!((src_ops | dst_ops) & mask);
}
/**
rio_mport_read_config_32(port, destid, hopcount, RIO_DST_OPS_CAR,
&rdev->dst_ops);
- if (rio_device_has_destid(port, rdev->src_ops, rdev->dst_ops)
- && do_enum) {
- rio_set_device_id(port, destid, hopcount, next_destid);
- rdev->destid = next_destid++;
- if (next_destid == port->host_deviceid)
- next_destid++;
+ if (rio_device_has_destid(port, rdev->src_ops, rdev->dst_ops)) {
+ if (do_enum) {
+ rio_set_device_id(port, destid, hopcount, next_destid);
+ rdev->destid = next_destid++;
+ if (next_destid == port->host_deviceid)
+ next_destid++;
+ } else
+ rdev->destid = rio_get_device_id(port, destid, hopcount);
} else
- rdev->destid = rio_get_device_id(port, destid, hopcount);
+ /* Switch device has an associated destID */
+ rdev->destid = RIO_INVALID_DESTID;
/* If a PE has both switch and other functions, show it as a switch */
if (rio_is_switch(rdev)) {
}
rswitch->switchid = next_switchid;
rswitch->hopcount = hopcount;
- rswitch->destid = 0xffff;
+ rswitch->destid = destid;
/* Initialize switch route table */
for (rdid = 0; rdid < RIO_MAX_ROUTE_ENTRIES; rdid++)
rswitch->route_table[rdid] = RIO_INVALID_ROUTE;
rdev->dev.release = rio_release_dev;
rio_dev_get(rdev);
- rdev->dev.dma_mask = (u64 *) 0xffffffff;
- rdev->dev.coherent_dma_mask = 0xffffffffULL;
+ rdev->dma_mask = DMA_32BIT_MASK;
+ rdev->dev.dma_mask = &rdev->dma_mask;
+ rdev->dev.coherent_dma_mask = DMA_32BIT_MASK;
if ((rdev->pef & RIO_PEF_INB_DOORBELL) &&
(rdev->dst_ops & RIO_DST_OPS_DOORBELL))
/**
* rio_route_add_entry- Add a route entry to a switch routing table
* @mport: Master port to send transaction
- * @rdev: Switch device
+ * @rswitch: Switch device
* @table: Routing table ID
* @route_destid: Destination ID to be routed
* @route_port: Port number to be routed
* %RIO_GLOBAL_TABLE in @table. Returns %0 on success or %-EINVAL
* on failure.
*/
-static int rio_route_add_entry(struct rio_mport *mport, struct rio_dev *rdev,
+static int rio_route_add_entry(struct rio_mport *mport, struct rio_switch *rswitch,
u16 table, u16 route_destid, u8 route_port)
{
- return rdev->rswitch->add_entry(mport, rdev->rswitch->destid,
- rdev->rswitch->hopcount, table,
+ return rswitch->add_entry(mport, rswitch->destid,
+ rswitch->hopcount, table,
route_destid, route_port);
}
/**
* rio_route_get_entry- Read a route entry in a switch routing table
* @mport: Master port to send transaction
- * @rdev: Switch device
+ * @rswitch: Switch device
* @table: Routing table ID
* @route_destid: Destination ID to be routed
* @route_port: Pointer to read port number into
* on failure.
*/
static int
-rio_route_get_entry(struct rio_mport *mport, struct rio_dev *rdev, u16 table,
+rio_route_get_entry(struct rio_mport *mport, struct rio_switch *rswitch, u16 table,
u16 route_destid, u8 * route_port)
{
- return rdev->rswitch->get_entry(mport, rdev->rswitch->destid,
- rdev->rswitch->hopcount, table,
+ return rswitch->get_entry(mport, rswitch->destid,
+ rswitch->hopcount, table,
route_destid, route_port);
}
int port_num;
int num_ports;
int cur_destid;
+ int sw_destid;
+ int sw_inport;
struct rio_dev *rdev;
u16 destid;
int tmp;
if (rio_is_switch(rdev)) {
next_switchid++;
+ sw_inport = rio_get_swpinfo_inport(port, RIO_ANY_DESTID, hopcount);
+ rio_route_add_entry(port, rdev->rswitch, RIO_GLOBAL_TABLE,
+ port->host_deviceid, sw_inport);
+ rdev->rswitch->route_table[port->host_deviceid] = sw_inport;
for (destid = 0; destid < next_destid; destid++) {
- rio_route_add_entry(port, rdev, RIO_GLOBAL_TABLE,
- destid, rio_get_swpinfo_inport(port,
- RIO_ANY_DESTID,
- hopcount));
- rdev->rswitch->route_table[destid] =
- rio_get_swpinfo_inport(port, RIO_ANY_DESTID,
- hopcount);
+ if (destid == port->host_deviceid)
+ continue;
+ rio_route_add_entry(port, rdev->rswitch, RIO_GLOBAL_TABLE,
+ destid, sw_inport);
+ rdev->rswitch->route_table[destid] = sw_inport;
}
num_ports =
pr_debug(
"RIO: found %s (vid %4.4x did %4.4x) with %d ports\n",
rio_name(rdev), rdev->vid, rdev->did, num_ports);
+ sw_destid = next_destid;
for (port_num = 0; port_num < num_ports; port_num++) {
- if (rio_get_swpinfo_inport
- (port, RIO_ANY_DESTID, hopcount) == port_num)
+ if (sw_inport == port_num)
continue;
cur_destid = next_destid;
pr_debug(
"RIO: scanning device on port %d\n",
port_num);
- rio_route_add_entry(port, rdev,
+ rio_route_add_entry(port, rdev->rswitch,
RIO_GLOBAL_TABLE,
RIO_ANY_DESTID, port_num);
if (next_destid > cur_destid) {
for (destid = cur_destid;
destid < next_destid; destid++) {
- rio_route_add_entry(port, rdev,
+ if (destid == port->host_deviceid)
+ continue;
+ rio_route_add_entry(port, rdev->rswitch,
RIO_GLOBAL_TABLE,
destid,
port_num);
route_table[destid] =
port_num;
}
- rdev->rswitch->destid = cur_destid;
}
}
}
+
+ /* Check for empty switch */
+ if (next_destid == sw_destid) {
+ next_destid++;
+ if (next_destid == port->host_deviceid)
+ next_destid++;
+ }
+
+ rdev->rswitch->destid = sw_destid;
} else
pr_debug("RIO: found %s (vid %4.4x did %4.4x)\n",
rio_name(rdev), rdev->vid, rdev->did);
port_num);
for (ndestid = 0; ndestid < RIO_ANY_DESTID;
ndestid++) {
- rio_route_get_entry(port, rdev,
+ rio_route_get_entry(port, rdev->rswitch,
RIO_GLOBAL_TABLE,
ndestid,
&route_port);
}
/**
+ * rio_update_route_tables- Updates route tables in switches
+ * @port: Master port associated with the RIO network
+ *
+ * For each enumerated device, ensure that each switch in a system
+ * has correct routing entries. Add routes for devices that where
+ * unknown dirung the first enumeration pass through the switch.
+ */
+static void rio_update_route_tables(struct rio_mport *port)
+{
+ struct rio_dev *rdev;
+ struct rio_switch *rswitch;
+ u8 sport;
+ u16 destid;
+
+ list_for_each_entry(rdev, &rio_devices, global_list) {
+
+ destid = (rio_is_switch(rdev))?rdev->rswitch->destid:rdev->destid;
+
+ list_for_each_entry(rswitch, &rio_switches, node) {
+
+ if (rio_is_switch(rdev) && (rdev->rswitch == rswitch))
+ continue;
+
+ if (RIO_INVALID_ROUTE == rswitch->route_table[destid]) {
+
+ sport = rio_get_swpinfo_inport(port,
+ rswitch->destid, rswitch->hopcount);
+
+ if (rswitch->add_entry) {
+ rio_route_add_entry(port, rswitch, RIO_GLOBAL_TABLE, destid, sport);
+ rswitch->route_table[destid] = sport;
+ }
+ }
+ }
+ }
+}
+
+/**
* rio_enum_mport- Start enumeration through a master port
* @mport: Master port to send transactions
*
rc = -EBUSY;
goto out;
}
+ rio_update_route_tables(mport);
rio_clear_locks(mport);
} else {
printk(KERN_INFO "RIO: master port %d link inactive\n",
if (rio_is_switch(rdev))
for (i = 0; i < RIO_MAX_ROUTE_ENTRIES; i++) {
if (rio_route_get_entry
- (rdev->net->hport, rdev, RIO_GLOBAL_TABLE, i,
- &sport) < 0)
+ (rdev->net->hport, rdev->rswitch, RIO_GLOBAL_TABLE,
+ i, &sport) < 0)
continue;
rdev->rswitch->route_table[i] = sport;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff