diff options
Diffstat (limited to 'drivers/net/fjes/fjes_main.c')
| -rw-r--r-- | drivers/net/fjes/fjes_main.c | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/drivers/net/fjes/fjes_main.c b/drivers/net/fjes/fjes_main.c index caecfb39ecf9..c47ecf35d005 100644 --- a/drivers/net/fjes/fjes_main.c +++ b/drivers/net/fjes/fjes_main.c @@ -73,6 +73,7 @@ static int fjes_remove(struct platform_device *); static int fjes_sw_init(struct fjes_adapter *); static void fjes_netdev_setup(struct net_device *); static void fjes_irq_watch_task(struct work_struct *); +static void fjes_watch_unshare_task(struct work_struct *); static void fjes_rx_irq(struct fjes_adapter *, int); static int fjes_poll(struct napi_struct *, int); @@ -309,6 +310,8 @@ static int fjes_close(struct net_device *netdev) fjes_free_irq(adapter); cancel_delayed_work_sync(&adapter->interrupt_watch_task); + cancel_work_sync(&adapter->unshare_watch_task); + adapter->unshare_watch_bitmask = 0; cancel_work_sync(&adapter->raise_intr_rxdata_task); cancel_work_sync(&adapter->tx_stall_task); @@ -1025,6 +1028,8 @@ static int fjes_probe(struct platform_device *plat_dev) INIT_WORK(&adapter->tx_stall_task, fjes_tx_stall_task); INIT_WORK(&adapter->raise_intr_rxdata_task, fjes_raise_intr_rxdata_task); + INIT_WORK(&adapter->unshare_watch_task, fjes_watch_unshare_task); + adapter->unshare_watch_bitmask = 0; INIT_DELAYED_WORK(&adapter->interrupt_watch_task, fjes_irq_watch_task); adapter->interrupt_watch_enable = false; @@ -1069,6 +1074,7 @@ static int fjes_remove(struct platform_device *plat_dev) struct fjes_hw *hw = &adapter->hw; cancel_delayed_work_sync(&adapter->interrupt_watch_task); + cancel_work_sync(&adapter->unshare_watch_task); cancel_work_sync(&adapter->raise_intr_rxdata_task); cancel_work_sync(&adapter->tx_stall_task); if (adapter->control_wq) @@ -1128,6 +1134,126 @@ static void fjes_irq_watch_task(struct work_struct *work) } } +static void fjes_watch_unshare_task(struct work_struct *work) +{ + struct fjes_adapter *adapter = + container_of(work, struct fjes_adapter, unshare_watch_task); + + struct net_device *netdev = adapter->netdev; + struct fjes_hw *hw = &adapter->hw; + + int unshare_watch, unshare_reserve; + int max_epid, my_epid, epidx; + int stop_req, stop_req_done; + ulong unshare_watch_bitmask; + int wait_time = 0; + int is_shared; + int ret; + + my_epid = hw->my_epid; + max_epid = hw->max_epid; + + unshare_watch_bitmask = adapter->unshare_watch_bitmask; + adapter->unshare_watch_bitmask = 0; + + while ((unshare_watch_bitmask || hw->txrx_stop_req_bit) && + (wait_time < 3000)) { + for (epidx = 0; epidx < hw->max_epid; epidx++) { + if (epidx == hw->my_epid) + continue; + + is_shared = fjes_hw_epid_is_shared(hw->hw_info.share, + epidx); + + stop_req = test_bit(epidx, &hw->txrx_stop_req_bit); + + stop_req_done = hw->ep_shm_info[epidx].rx.info->v1i.rx_status & + FJES_RX_STOP_REQ_DONE; + + unshare_watch = test_bit(epidx, &unshare_watch_bitmask); + + unshare_reserve = test_bit(epidx, + &hw->hw_info.buffer_unshare_reserve_bit); + + if ((!stop_req || + (is_shared && (!is_shared || !stop_req_done))) && + (is_shared || !unshare_watch || !unshare_reserve)) + continue; + + mutex_lock(&hw->hw_info.lock); + ret = fjes_hw_unregister_buff_addr(hw, epidx); + switch (ret) { + case 0: + break; + case -ENOMSG: + case -EBUSY: + default: + if (!work_pending( + &adapter->force_close_task)) { + adapter->force_reset = true; + schedule_work( + &adapter->force_close_task); + } + break; + } + mutex_unlock(&hw->hw_info.lock); + + fjes_hw_setup_epbuf(&hw->ep_shm_info[epidx].tx, + netdev->dev_addr, netdev->mtu); + + clear_bit(epidx, &hw->txrx_stop_req_bit); + clear_bit(epidx, &unshare_watch_bitmask); + clear_bit(epidx, + &hw->hw_info.buffer_unshare_reserve_bit); + } + + msleep(100); + wait_time += 100; + } + + if (hw->hw_info.buffer_unshare_reserve_bit) { + for (epidx = 0; epidx < hw->max_epid; epidx++) { + if (epidx == hw->my_epid) + continue; + + if (test_bit(epidx, + &hw->hw_info.buffer_unshare_reserve_bit)) { + mutex_lock(&hw->hw_info.lock); + + ret = fjes_hw_unregister_buff_addr(hw, epidx); + switch (ret) { + case 0: + break; + case -ENOMSG: + case -EBUSY: + default: + if (!work_pending( + &adapter->force_close_task)) { + adapter->force_reset = true; + schedule_work( + &adapter->force_close_task); + } + break; + } + mutex_unlock(&hw->hw_info.lock); + + fjes_hw_setup_epbuf( + &hw->ep_shm_info[epidx].tx, + netdev->dev_addr, netdev->mtu); + + clear_bit(epidx, &hw->txrx_stop_req_bit); + clear_bit(epidx, &unshare_watch_bitmask); + clear_bit(epidx, &hw->hw_info.buffer_unshare_reserve_bit); + } + + if (test_bit(epidx, &unshare_watch_bitmask)) { + hw->ep_shm_info[epidx].tx.info->v1i.rx_status &= + ~FJES_RX_STOP_REQ_DONE; + } + } + } +} + /* fjes_init_module - Driver Registration Routine */ static int __init fjes_init_module(void) { |