DEFINE_SPINLOCK(rio_global_list_lock);
static int next_destid = 0;
-static int next_switchid = 0;
static int next_net = 0;
static int next_comptag = 1;
struct rio_dev *rdev;
struct rio_switch *rswitch = NULL;
int result, rdid;
+ size_t size;
+ u32 swpinfo = 0;
- rdev = kzalloc(sizeof(struct rio_dev), GFP_KERNEL);
+ size = sizeof(struct rio_dev);
+ if (rio_mport_read_config_32(port, destid, hopcount,
+ RIO_PEF_CAR, &result))
+ return NULL;
+
+ if (result & (RIO_PEF_SWITCH | RIO_PEF_MULTIPORT)) {
+ rio_mport_read_config_32(port, destid, hopcount,
+ RIO_SWP_INFO_CAR, &swpinfo);
+ if (result & RIO_PEF_SWITCH) {
+ size += (RIO_GET_TOTAL_PORTS(swpinfo) *
+ sizeof(rswitch->nextdev[0])) + sizeof(*rswitch);
+ }
+ }
+
+ rdev = kzalloc(size, GFP_KERNEL);
if (!rdev)
return NULL;
rdev->net = net;
+ rdev->pef = result;
+ rdev->swpinfo = swpinfo;
rio_mport_read_config_32(port, destid, hopcount, RIO_DEV_ID_CAR,
&result);
rdev->did = result >> 16;
rio_mport_read_config_32(port, destid, hopcount, RIO_ASM_INFO_CAR,
&result);
rdev->asm_rev = result >> 16;
- rio_mport_read_config_32(port, destid, hopcount, RIO_PEF_CAR,
- &rdev->pef);
if (rdev->pef & RIO_PEF_EXT_FEATURES) {
rdev->efptr = result & 0xffff;
rdev->phys_efptr = rio_mport_get_physefb(port, 0, destid,
hopcount, RIO_EFB_ERR_MGMNT);
}
- if (rdev->pef & (RIO_PEF_SWITCH | RIO_PEF_MULTIPORT)) {
- rio_mport_read_config_32(port, destid, hopcount,
- RIO_SWP_INFO_CAR, &rdev->swpinfo);
- }
-
rio_mport_read_config_32(port, destid, hopcount, RIO_SRC_OPS_CAR,
&rdev->src_ops);
rio_mport_read_config_32(port, destid, hopcount, RIO_DST_OPS_CAR,
rio_mport_write_config_32(port, destid, hopcount,
RIO_COMPONENT_TAG_CSR, next_comptag);
rdev->comp_tag = next_comptag++;
+ } else {
+ rio_mport_read_config_32(port, destid, hopcount,
+ RIO_COMPONENT_TAG_CSR,
+ &rdev->comp_tag);
}
if (rio_device_has_destid(port, rdev->src_ops, rdev->dst_ops)) {
next_destid++;
} else
rdev->destid = rio_get_device_id(port, destid, hopcount);
- } else
- /* Switch device has an associated destID */
- rdev->destid = RIO_INVALID_DESTID;
+
+ rdev->hopcount = 0xff;
+ } else {
+ /* Switch device has an associated destID which
+ * will be adjusted later
+ */
+ rdev->destid = destid;
+ rdev->hopcount = hopcount;
+ }
/* If a PE has both switch and other functions, show it as a switch */
if (rio_is_switch(rdev)) {
- rswitch = kzalloc(sizeof(*rswitch) +
- RIO_GET_TOTAL_PORTS(rdev->swpinfo) *
- sizeof(rswitch->nextdev[0]),
- GFP_KERNEL);
- if (!rswitch)
- goto cleanup;
- rswitch->switchid = next_switchid;
- rswitch->hopcount = hopcount;
- rswitch->destid = destid;
+ rswitch = rdev->rswitch;
+ rswitch->switchid = rdev->comp_tag & RIO_CTAG_UDEVID;
rswitch->port_ok = 0;
rswitch->route_table = kzalloc(sizeof(u8)*
RIO_MAX_ROUTE_ENTRIES(port->sys_size),
for (rdid = 0; rdid < RIO_MAX_ROUTE_ENTRIES(port->sys_size);
rdid++)
rswitch->route_table[rdid] = RIO_INVALID_ROUTE;
- rdev->rswitch = rswitch;
- rswitch->rdev = rdev;
dev_set_name(&rdev->dev, "%02x:s:%04x", rdev->net->id,
- rdev->rswitch->switchid);
+ rswitch->switchid);
rio_switch_init(rdev, do_enum);
- if (do_enum && rdev->rswitch->clr_table)
- rdev->rswitch->clr_table(port, destid, hopcount,
- RIO_GLOBAL_TABLE);
+ if (do_enum && rswitch->clr_table)
+ rswitch->clr_table(port, destid, hopcount,
+ RIO_GLOBAL_TABLE);
list_add_tail(&rswitch->node, &rio_switches);
return rdev;
cleanup:
- if (rswitch) {
+ if (rswitch->route_table)
kfree(rswitch->route_table);
- kfree(rswitch);
- }
+
kfree(rdev);
return NULL;
}
/**
* rio_route_add_entry- Add a route entry to a switch routing table
- * @mport: Master port to send transaction
- * @rswitch: Switch device
+ * @rdev: RIO device
* @table: Routing table ID
* @route_destid: Destination ID to be routed
* @route_port: Port number to be routed
* on failure.
*/
static int
-rio_route_add_entry(struct rio_mport *mport, struct rio_switch *rswitch,
+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(mport, rswitch->destid,
- rswitch->hopcount, 1000);
+ rc = rio_lock_device(rdev->net->hport, rdev->destid,
+ rdev->hopcount, 1000);
if (rc)
return rc;
}
- rc = rswitch->add_entry(mport, rswitch->destid,
- rswitch->hopcount, table,
- route_destid, route_port);
+ rc = rdev->rswitch->add_entry(rdev->net->hport, rdev->destid,
+ rdev->hopcount, table,
+ route_destid, route_port);
if (lock)
- rio_unlock_device(mport, rswitch->destid, rswitch->hopcount);
+ 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
- * @mport: Master port to send transaction
- * @rswitch: Switch device
+ * @rdev: RIO 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_switch *rswitch, u16 table,
+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(mport, rswitch->destid,
- rswitch->hopcount, 1000);
+ rc = rio_lock_device(rdev->net->hport, rdev->destid,
+ rdev->hopcount, 1000);
if (rc)
return rc;
}
- rc = rswitch->get_entry(mport, rswitch->destid,
- rswitch->hopcount, table,
- route_destid, route_port);
+ rc = rdev->rswitch->get_entry(rdev->net->hport, rdev->destid,
+ rdev->hopcount, table,
+ route_destid, route_port);
if (lock)
- rio_unlock_device(mport, rswitch->destid, rswitch->hopcount);
+ rio_unlock_device(rdev->net->hport, rdev->destid,
+ rdev->hopcount);
return rc;
}
return -1;
if (rio_is_switch(rdev)) {
- next_switchid++;
sw_inport = RIO_GET_PORT_NUM(rdev->swpinfo);
- rio_route_add_entry(port, rdev->rswitch, RIO_GLOBAL_TABLE,
+ rio_route_add_entry(rdev, RIO_GLOBAL_TABLE,
port->host_deviceid, sw_inport, 0);
rdev->rswitch->route_table[port->host_deviceid] = sw_inport;
for (destid = 0; destid < next_destid; destid++) {
if (destid == port->host_deviceid)
continue;
- rio_route_add_entry(port, rdev->rswitch, RIO_GLOBAL_TABLE,
+ rio_route_add_entry(rdev, RIO_GLOBAL_TABLE,
destid, sw_inport, 0);
rdev->rswitch->route_table[destid] = sw_inport;
}
"RIO: scanning device on port %d\n",
port_num);
rdev->rswitch->port_ok |= (1 << port_num);
- rio_route_add_entry(port, rdev->rswitch,
- RIO_GLOBAL_TABLE,
+ rio_route_add_entry(rdev, RIO_GLOBAL_TABLE,
RIO_ANY_DESTID(port->sys_size),
port_num, 0);
destid < next_destid; destid++) {
if (destid == port->host_deviceid)
continue;
- rio_route_add_entry(port, rdev->rswitch,
+ rio_route_add_entry(rdev,
RIO_GLOBAL_TABLE,
destid,
port_num,
next_destid++;
}
- rdev->rswitch->destid = sw_destid;
+ rdev->destid = sw_destid;
} else
pr_debug("RIO: found %s (vid %4.4x did %4.4x)\n",
rio_name(rdev), rdev->vid, rdev->did);
* @port: Master port to send transactions
* @destid: Current destination ID in network
* @hopcount: Number of hops into the network
+ * @prev: previous rio_dev
+ * @prev_port: previous port number
*
* Recursively discovers a RIO network. Transactions are sent via the
* master port passed in @port.
*/
static int __devinit
rio_disc_peer(struct rio_net *net, struct rio_mport *port, u16 destid,
- u8 hopcount)
+ u8 hopcount, struct rio_dev *prev, int prev_port)
{
u8 port_num, route_port;
struct rio_dev *rdev;
if ((rdev = rio_setup_device(net, port, destid, hopcount, 0))) {
/* Add device to the global and bus/net specific list. */
list_add_tail(&rdev->net_list, &net->devices);
+ rdev->prev = prev;
+ if (prev && rio_is_switch(prev))
+ prev->rswitch->nextdev[prev_port] = rdev;
} else
return -1;
if (rio_is_switch(rdev)) {
- next_switchid++;
-
/* Associated destid is how we accessed this switch */
- rdev->rswitch->destid = destid;
+ rdev->destid = destid;
pr_debug(
"RIO: found %s (vid %4.4x did %4.4x) with %d ports\n",
for (ndestid = 0;
ndestid < RIO_ANY_DESTID(port->sys_size);
ndestid++) {
- rio_route_get_entry(port, rdev->rswitch,
+ rio_route_get_entry(rdev,
RIO_GLOBAL_TABLE,
ndestid,
&route_port, 0);
if (ndestid == RIO_ANY_DESTID(port->sys_size))
continue;
rio_unlock_device(port, destid, hopcount);
- if (rio_disc_peer
- (net, port, ndestid, hopcount + 1) < 0)
+ if (rio_disc_peer(net, port, ndestid,
+ hopcount + 1, rdev, port_num) < 0)
return -1;
}
}
*/
static void rio_update_route_tables(struct rio_mport *port)
{
- struct rio_dev *rdev;
+ struct rio_dev *rdev, *swrdev;
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;
+ destid = rdev->destid;
list_for_each_entry(rswitch, &rio_switches, node) {
continue;
if (RIO_INVALID_ROUTE == rswitch->route_table[destid]) {
+ swrdev = sw_to_rio_dev(rswitch);
+
/* Skip if destid ends in empty switch*/
- if (rswitch->destid == destid)
+ if (swrdev->destid == destid)
continue;
- sport = RIO_GET_PORT_NUM(rswitch->rdev->swpinfo);
+ sport = RIO_GET_PORT_NUM(swrdev->swpinfo);
if (rswitch->add_entry) {
- rio_route_add_entry(port, rswitch,
+ rio_route_add_entry(swrdev,
RIO_GLOBAL_TABLE, destid,
sport, 0);
rswitch->route_table[destid] = sport;
list_for_each_entry(rdev, &rio_devices, global_list)
if (rio_is_switch(rdev)) {
- rio_lock_device(rdev->net->hport, rdev->rswitch->destid,
- rdev->rswitch->hopcount, 1000);
+ rio_lock_device(rdev->net->hport, rdev->destid,
+ rdev->hopcount, 1000);
for (i = 0;
i < RIO_MAX_ROUTE_ENTRIES(rdev->net->hport->sys_size);
i++) {
- if (rio_route_get_entry
- (rdev->net->hport, rdev->rswitch,
- RIO_GLOBAL_TABLE, i, &sport, 0) < 0)
+ if (rio_route_get_entry(rdev,
+ RIO_GLOBAL_TABLE, i, &sport, 0) < 0)
continue;
rdev->rswitch->route_table[i] = sport;
}
rio_unlock_device(rdev->net->hport,
- rdev->rswitch->destid,
- rdev->rswitch->hopcount);
+ rdev->destid,
+ rdev->hopcount);
}
}
mport->host_deviceid);
if (rio_disc_peer(net, mport, RIO_ANY_DESTID(mport->sys_size),
- 0) < 0) {
+ 0, NULL, 0) < 0) {
printk(KERN_INFO
"RIO: master port %d device has failed discovery\n",
mport->id);
projects / mv-sheeva.git / blobdiff