diff options
Diffstat (limited to 'drivers/rapidio/rio-scan.c')
-rw-r--r-- | drivers/rapidio/rio-scan.c | 162 |
1 files changed, 87 insertions, 75 deletions
diff --git a/drivers/rapidio/rio-scan.c b/drivers/rapidio/rio-scan.c index 1eb82c4..a50391b 100644 --- a/drivers/rapidio/rio-scan.c +++ b/drivers/rapidio/rio-scan.c @@ -46,7 +46,6 @@ static void rio_init_em(struct rio_dev *rdev); 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; @@ -378,12 +377,30 @@ static struct rio_dev __devinit *rio_setup_device(struct rio_net *net, 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; @@ -397,8 +414,6 @@ static struct rio_dev __devinit *rio_setup_device(struct rio_net *net, 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, @@ -408,11 +423,6 @@ static struct rio_dev __devinit *rio_setup_device(struct rio_net *net, 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, @@ -427,6 +437,10 @@ static struct rio_dev __devinit *rio_setup_device(struct rio_net *net, rio_mport_write_config_32(port, destid, hopcount, RIO_COMPONENT_TAG_CSR, next_comptag); rdev->comp_tag = next_comptag++; + } 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)) { @@ -437,21 +451,20 @@ static struct rio_dev __devinit *rio_setup_device(struct rio_net *net, 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), @@ -462,15 +475,13 @@ static struct rio_dev __devinit *rio_setup_device(struct rio_net *net, 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); @@ -506,10 +517,9 @@ static struct rio_dev __devinit *rio_setup_device(struct rio_net *net, return rdev; cleanup: - if (rswitch) { + if (rswitch->route_table) kfree(rswitch->route_table); - kfree(rswitch); - } + kfree(rdev); return NULL; } @@ -632,8 +642,7 @@ rio_unlock_device(struct rio_mport *port, u16 destid, u8 hopcount) /** * 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 @@ -647,31 +656,31 @@ rio_unlock_device(struct rio_mport *port, u16 destid, u8 hopcount) * 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 @@ -685,23 +694,24 @@ rio_route_add_entry(struct rio_mport *mport, struct rio_switch *rswitch, * 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; } @@ -809,16 +819,15 @@ static int __devinit rio_enum_peer(struct rio_net *net, struct rio_mport *port, 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; } @@ -850,8 +859,7 @@ static int __devinit rio_enum_peer(struct rio_net *net, struct rio_mport *port, "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); @@ -865,7 +873,7 @@ static int __devinit rio_enum_peer(struct rio_net *net, struct rio_mport *port, 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, @@ -904,7 +912,7 @@ static int __devinit rio_enum_peer(struct rio_net *net, struct rio_mport *port, 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); @@ -935,13 +943,15 @@ static int rio_enum_complete(struct rio_mport *port) * @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; @@ -951,14 +961,15 @@ rio_disc_peer(struct rio_net *net, struct rio_mport *port, u16 destid, 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", @@ -981,7 +992,7 @@ rio_disc_peer(struct rio_net *net, struct rio_mport *port, u16 destid, 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); @@ -992,8 +1003,8 @@ rio_disc_peer(struct rio_net *net, struct rio_mport *port, u16 destid, 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; } } @@ -1069,14 +1080,14 @@ static struct rio_net __devinit *rio_alloc_net(struct rio_mport *port) */ 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) { @@ -1084,14 +1095,16 @@ static void rio_update_route_tables(struct rio_mport *port) 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; @@ -1203,21 +1216,20 @@ static void rio_build_route_tables(void) 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); } } @@ -1284,7 +1296,7 @@ int __devinit rio_disc_mport(struct rio_mport *mport) 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); |