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author | Taku Izumi <izumi.taku@jp.fujitsu.com> | 2015-08-21 08:29:25 (GMT) |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2015-08-24 21:06:34 (GMT) |
commit | b772b9dc63df0ca8a750ceac9ab356376022f0b6 (patch) | |
tree | ce11cedba5d6f092c964b875f81738875953edee /drivers/net/fjes | |
parent | 9acf51cbf73de8952e3df75200d7a7755c16d0f6 (diff) | |
download | linux-b772b9dc63df0ca8a750ceac9ab356376022f0b6.tar.xz |
fjes: raise_intr_rxdata_task
This patch add raise_intr_rxdata_task.
Extended Socket Network Device is shared memory
based, so someone's transmission denotes other's
reception. In order to notify receivers, sender
has to raise interruption of receivers.
raise_intr_rxdata_task does this work.
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/fjes')
-rw-r--r-- | drivers/net/fjes/fjes.h | 4 | ||||
-rw-r--r-- | drivers/net/fjes/fjes_main.c | 63 |
2 files changed, 67 insertions, 0 deletions
diff --git a/drivers/net/fjes/fjes.h b/drivers/net/fjes/fjes.h index 7af4304..8e9899e 100644 --- a/drivers/net/fjes/fjes.h +++ b/drivers/net/fjes/fjes.h @@ -50,6 +50,10 @@ struct fjes_adapter { bool irq_registered; + struct workqueue_struct *txrx_wq; + + struct work_struct raise_intr_rxdata_task; + struct fjes_hw hw; }; diff --git a/drivers/net/fjes/fjes_main.c b/drivers/net/fjes/fjes_main.c index 220ff3d..80e180f 100644 --- a/drivers/net/fjes/fjes_main.c +++ b/drivers/net/fjes/fjes_main.c @@ -52,6 +52,7 @@ static int fjes_close(struct net_device *); static int fjes_setup_resources(struct fjes_adapter *); static void fjes_free_resources(struct fjes_adapter *); static netdev_tx_t fjes_xmit_frame(struct sk_buff *, struct net_device *); +static void fjes_raise_intr_rxdata_task(struct work_struct *); static irqreturn_t fjes_intr(int, void*); static int fjes_acpi_add(struct acpi_device *); @@ -276,6 +277,8 @@ static int fjes_close(struct net_device *netdev) fjes_free_irq(adapter); + cancel_work_sync(&adapter->raise_intr_rxdata_task); + fjes_hw_wait_epstop(hw); fjes_free_resources(adapter); @@ -404,6 +407,54 @@ static void fjes_free_resources(struct fjes_adapter *adapter) } } +static void fjes_raise_intr_rxdata_task(struct work_struct *work) +{ + struct fjes_adapter *adapter = container_of(work, + struct fjes_adapter, raise_intr_rxdata_task); + struct fjes_hw *hw = &adapter->hw; + enum ep_partner_status pstatus; + int max_epid, my_epid, epid; + + my_epid = hw->my_epid; + max_epid = hw->max_epid; + + for (epid = 0; epid < max_epid; epid++) + hw->ep_shm_info[epid].tx_status_work = 0; + + for (epid = 0; epid < max_epid; epid++) { + if (epid == my_epid) + continue; + + pstatus = fjes_hw_get_partner_ep_status(hw, epid); + if (pstatus == EP_PARTNER_SHARED) { + hw->ep_shm_info[epid].tx_status_work = + hw->ep_shm_info[epid].tx.info->v1i.tx_status; + + if (hw->ep_shm_info[epid].tx_status_work == + FJES_TX_DELAY_SEND_PENDING) { + hw->ep_shm_info[epid].tx.info->v1i.tx_status = + FJES_TX_DELAY_SEND_NONE; + } + } + } + + for (epid = 0; epid < max_epid; epid++) { + if (epid == my_epid) + continue; + + pstatus = fjes_hw_get_partner_ep_status(hw, epid); + if ((hw->ep_shm_info[epid].tx_status_work == + FJES_TX_DELAY_SEND_PENDING) && + (pstatus == EP_PARTNER_SHARED) && + !(hw->ep_shm_info[epid].rx.info->v1i.rx_status)) { + fjes_hw_raise_interrupt(hw, epid, + REG_ICTL_MASK_RX_DATA); + } + } + + usleep_range(500, 1000); +} + static int fjes_tx_send(struct fjes_adapter *adapter, int dest, void *data, size_t len) { @@ -416,6 +467,9 @@ static int fjes_tx_send(struct fjes_adapter *adapter, int dest, adapter->hw.ep_shm_info[dest].tx.info->v1i.tx_status = FJES_TX_DELAY_SEND_PENDING; + if (!work_pending(&adapter->raise_intr_rxdata_task)) + queue_work(adapter->txrx_wq, + &adapter->raise_intr_rxdata_task); retval = 0; return retval; @@ -630,6 +684,11 @@ static int fjes_probe(struct platform_device *plat_dev) adapter->force_reset = false; adapter->open_guard = false; + adapter->txrx_wq = create_workqueue(DRV_NAME "/txrx"); + + INIT_WORK(&adapter->raise_intr_rxdata_task, + fjes_raise_intr_rxdata_task); + res = platform_get_resource(plat_dev, IORESOURCE_MEM, 0); hw->hw_res.start = res->start; hw->hw_res.size = res->end - res->start + 1; @@ -669,6 +728,10 @@ static int fjes_remove(struct platform_device *plat_dev) struct fjes_adapter *adapter = netdev_priv(netdev); struct fjes_hw *hw = &adapter->hw; + cancel_work_sync(&adapter->raise_intr_rxdata_task); + if (adapter->txrx_wq) + destroy_workqueue(adapter->txrx_wq); + unregister_netdev(netdev); fjes_hw_exit(hw); |