--- zzzz-none-000/linux-3.10.107/drivers/rapidio/rio-scan.c 2017-06-27 09:49:32.000000000 +0000 +++ scorpion-7490-727/linux-3.10.107/drivers/rapidio/rio-scan.c 2021-02-04 17:41:59.000000000 +0000 @@ -83,7 +83,7 @@ * @destid: destID to reserve * * Tries to reserve the specified destID. - * Returns 0 if successfull. + * Returns 0 if successful. */ static int rio_destid_reserve(struct rio_net *net, u16 destid) { @@ -406,6 +406,7 @@ rio_mport_write_config_32(port, destid, hopcount, RIO_COMPONENT_TAG_CSR, next_comptag); rdev->comp_tag = next_comptag++; + rdev->do_enum = true; } else { rio_mport_read_config_32(port, destid, hopcount, RIO_COMPONENT_TAG_CSR, @@ -432,8 +433,8 @@ /* If a PE has both switch and other functions, show it as a switch */ if (rio_is_switch(rdev)) { rswitch = rdev->rswitch; - rswitch->switchid = rdev->comp_tag & RIO_CTAG_UDEVID; rswitch->port_ok = 0; + spin_lock_init(&rswitch->lock); rswitch->route_table = kzalloc(sizeof(u8)* RIO_MAX_ROUTE_ENTRIES(port->sys_size), GFP_KERNEL); @@ -444,12 +445,10 @@ rdid++) rswitch->route_table[rdid] = RIO_INVALID_ROUTE; dev_set_name(&rdev->dev, "%02x:s:%04x", rdev->net->id, - rswitch->switchid); - rio_switch_init(rdev, do_enum); + rdev->comp_tag & RIO_CTAG_UDEVID); - if (do_enum && rswitch->clr_table) - rswitch->clr_table(port, destid, hopcount, - RIO_GLOBAL_TABLE); + if (do_enum) + rio_route_clr_table(rdev, RIO_GLOBAL_TABLE, 0); list_add_tail(&rswitch->node, &net->switches); @@ -459,9 +458,10 @@ rio_enable_rx_tx_port(port, 0, destid, hopcount, 0); dev_set_name(&rdev->dev, "%02x:e:%04x", rdev->net->id, - rdev->destid); + rdev->comp_tag & RIO_CTAG_UDEVID); } + rdev->dev.parent = &port->dev; rio_attach_device(rdev); device_initialize(&rdev->dev); @@ -533,156 +533,6 @@ } /** - * rio_lock_device - Acquires host device lock for specified device - * @port: Master port to send transaction - * @destid: Destination ID for device/switch - * @hopcount: Hopcount to reach switch - * @wait_ms: Max wait time in msec (0 = no timeout) - * - * Attepts to acquire host device lock for specified device - * Returns 0 if device lock acquired or EINVAL if timeout expires. - */ -static int -rio_lock_device(struct rio_mport *port, u16 destid, u8 hopcount, int wait_ms) -{ - u32 result; - int tcnt = 0; - - /* Attempt to acquire device lock */ - rio_mport_write_config_32(port, destid, hopcount, - RIO_HOST_DID_LOCK_CSR, port->host_deviceid); - rio_mport_read_config_32(port, destid, hopcount, - RIO_HOST_DID_LOCK_CSR, &result); - - while (result != port->host_deviceid) { - if (wait_ms != 0 && tcnt == wait_ms) { - pr_debug("RIO: timeout when locking device %x:%x\n", - destid, hopcount); - return -EINVAL; - } - - /* Delay a bit */ - mdelay(1); - tcnt++; - /* Try to acquire device lock again */ - rio_mport_write_config_32(port, destid, - hopcount, - RIO_HOST_DID_LOCK_CSR, - port->host_deviceid); - rio_mport_read_config_32(port, destid, - hopcount, - RIO_HOST_DID_LOCK_CSR, &result); - } - - return 0; -} - -/** - * rio_unlock_device - Releases host device lock for specified device - * @port: Master port to send transaction - * @destid: Destination ID for device/switch - * @hopcount: Hopcount to reach switch - * - * Returns 0 if device lock released or EINVAL if fails. - */ -static int -rio_unlock_device(struct rio_mport *port, u16 destid, u8 hopcount) -{ - u32 result; - - /* Release device lock */ - rio_mport_write_config_32(port, destid, - hopcount, - RIO_HOST_DID_LOCK_CSR, - port->host_deviceid); - rio_mport_read_config_32(port, destid, hopcount, - RIO_HOST_DID_LOCK_CSR, &result); - if ((result & 0xffff) != 0xffff) { - pr_debug("RIO: badness when releasing device lock %x:%x\n", - destid, hopcount); - return -EINVAL; - } - - return 0; -} - -/** - * rio_route_add_entry- Add a route entry to a switch routing table - * @rdev: RIO device - * @table: Routing table ID - * @route_destid: Destination ID to be routed - * @route_port: Port number to be routed - * @lock: lock switch device flag - * - * Calls the switch specific add_entry() method to add a route entry - * on a switch. The route table can be specified using the @table - * argument if a switch has per port routing tables or the normal - * use is to specific all tables (or the global table) by passing - * %RIO_GLOBAL_TABLE in @table. Returns %0 on success or %-EINVAL - * on failure. - */ -static int -rio_route_add_entry(struct rio_dev *rdev, - u16 table, u16 route_destid, u8 route_port, int lock) -{ - int rc; - - if (lock) { - rc = rio_lock_device(rdev->net->hport, rdev->destid, - rdev->hopcount, 1000); - if (rc) - return rc; - } - - rc = rdev->rswitch->add_entry(rdev->net->hport, rdev->destid, - rdev->hopcount, table, - route_destid, route_port); - if (lock) - rio_unlock_device(rdev->net->hport, rdev->destid, - rdev->hopcount); - - return rc; -} - -/** - * rio_route_get_entry- Read a route entry in a switch routing table - * @rdev: RIO device - * @table: Routing table ID - * @route_destid: Destination ID to be routed - * @route_port: Pointer to read port number into - * @lock: lock switch device flag - * - * Calls the switch specific get_entry() method to read a route entry - * in a switch. The route table can be specified using the @table - * argument if a switch has per port routing tables or the normal - * use is to specific all tables (or the global table) by passing - * %RIO_GLOBAL_TABLE in @table. Returns %0 on success or %-EINVAL - * on failure. - */ -static int -rio_route_get_entry(struct rio_dev *rdev, u16 table, - u16 route_destid, u8 *route_port, int lock) -{ - int rc; - - if (lock) { - rc = rio_lock_device(rdev->net->hport, rdev->destid, - rdev->hopcount, 1000); - if (rc) - return rc; - } - - rc = rdev->rswitch->get_entry(rdev->net->hport, rdev->destid, - rdev->hopcount, table, - route_destid, route_port); - if (lock) - rio_unlock_device(rdev->net->hport, rdev->destid, - rdev->hopcount); - - return rc; -} - -/** * rio_get_host_deviceid_lock- Reads the Host Device ID Lock CSR on a device * @port: Master port to send transaction * @hopcount: Number of hops to the device @@ -1094,12 +944,9 @@ sport = RIO_GET_PORT_NUM(swrdev->swpinfo); - if (rswitch->add_entry) { - rio_route_add_entry(swrdev, - RIO_GLOBAL_TABLE, destid, - sport, 0); - rswitch->route_table[destid] = sport; - } + rio_route_add_entry(swrdev, RIO_GLOBAL_TABLE, + destid, sport, 0); + rswitch->route_table[destid] = sport; } } } @@ -1115,8 +962,8 @@ static void rio_init_em(struct rio_dev *rdev) { if (rio_is_switch(rdev) && (rdev->em_efptr) && - (rdev->rswitch->em_init)) { - rdev->rswitch->em_init(rdev); + rdev->rswitch->ops && rdev->rswitch->ops->em_init) { + rdev->rswitch->ops->em_init(rdev); } } @@ -1141,7 +988,7 @@ * link, then start recursive peer enumeration. Returns %0 if * enumeration succeeds or %-EBUSY if enumeration fails. */ -int rio_enum_mport(struct rio_mport *mport, u32 flags) +static int rio_enum_mport(struct rio_mport *mport, u32 flags) { struct rio_net *net = NULL; int rc = 0; @@ -1256,7 +1103,7 @@ * peer discovery. Returns %0 if discovery succeeds or %-EBUSY * on failure. */ -int rio_disc_mport(struct rio_mport *mport, u32 flags) +static int rio_disc_mport(struct rio_mport *mport, u32 flags) { struct rio_net *net = NULL; unsigned long to_end; @@ -1315,6 +1162,7 @@ } static struct rio_scan rio_scan_ops = { + .owner = THIS_MODULE, .enumerate = rio_enum_mport, .discover = rio_disc_mport, };