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Commit cb79eaae authored by Taku Izumi's avatar Taku Izumi Committed by David S. Miller
Browse files

fjes: handle receive cancellation request interrupt 



This patch adds implementation of handling IRQ
of other receiver's receive cancellation request.

Signed-off-by: default avatarTaku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b5a9152d

drivers/net/fjes/fjes_main.c

+78 −0
Original line number Diff line number Diff line
@@ -820,6 +820,74 @@ static int fjes_vlan_rx_kill_vid(struct net_device *netdev, 
	return 0;

}



static void fjes_txrx_stop_req_irq(struct fjes_adapter *adapter,

				   int src_epid)

{

	struct fjes_hw *hw = &adapter->hw;

	enum ep_partner_status status;



	status = fjes_hw_get_partner_ep_status(hw, src_epid);

	switch (status) {

	case EP_PARTNER_UNSHARE:

	case EP_PARTNER_COMPLETE:

	default:

		break;

	case EP_PARTNER_WAITING:

		if (src_epid < hw->my_epid) {

			hw->ep_shm_info[src_epid].tx.info->v1i.rx_status |=

				FJES_RX_STOP_REQ_DONE;



			clear_bit(src_epid, &hw->txrx_stop_req_bit);

			set_bit(src_epid, &adapter->unshare_watch_bitmask);



			if (!work_pending(&adapter->unshare_watch_task))

				queue_work(adapter->control_wq,

					   &adapter->unshare_watch_task);

		}

		break;

	case EP_PARTNER_SHARED:

		if (hw->ep_shm_info[src_epid].rx.info->v1i.rx_status &

		    FJES_RX_STOP_REQ_REQUEST) {

			set_bit(src_epid, &hw->epstop_req_bit);

			if (!work_pending(&hw->epstop_task))

				queue_work(adapter->control_wq,

					   &hw->epstop_task);

		}

		break;

	}

}



static void fjes_stop_req_irq(struct fjes_adapter *adapter, int src_epid)

{

	struct fjes_hw *hw = &adapter->hw;

	enum ep_partner_status status;



	set_bit(src_epid, &hw->hw_info.buffer_unshare_reserve_bit);



	status = fjes_hw_get_partner_ep_status(hw, src_epid);

	switch (status) {

	case EP_PARTNER_WAITING:

		hw->ep_shm_info[src_epid].tx.info->v1i.rx_status |=

				FJES_RX_STOP_REQ_DONE;

		clear_bit(src_epid, &hw->txrx_stop_req_bit);

		/* fall through */

	case EP_PARTNER_UNSHARE:

	case EP_PARTNER_COMPLETE:

	default:

		set_bit(src_epid, &adapter->unshare_watch_bitmask);

		if (!work_pending(&adapter->unshare_watch_task))

			queue_work(adapter->control_wq,

				   &adapter->unshare_watch_task);

		break;

	case EP_PARTNER_SHARED:

		set_bit(src_epid, &hw->epstop_req_bit);



		if (!work_pending(&hw->epstop_task))

			queue_work(adapter->control_wq, &hw->epstop_task);

		break;

	}

}



static void fjes_update_zone_irq(struct fjes_adapter *adapter,

				 int src_epid)

{
@@ -842,6 +910,16 @@ static irqreturn_t fjes_intr(int irq, void *data) 
		if (icr & REG_ICTL_MASK_RX_DATA)

			fjes_rx_irq(adapter, icr & REG_IS_MASK_EPID);



		if (icr & REG_ICTL_MASK_DEV_STOP_REQ)

			fjes_stop_req_irq(adapter, icr & REG_IS_MASK_EPID);



		if (icr & REG_ICTL_MASK_TXRX_STOP_REQ)

			fjes_txrx_stop_req_irq(adapter, icr & REG_IS_MASK_EPID);



		if (icr & REG_ICTL_MASK_TXRX_STOP_DONE)

			fjes_hw_set_irqmask(hw,

					    REG_ICTL_MASK_TXRX_STOP_DONE, true);



		if (icr & REG_ICTL_MASK_INFO_UPDATE)

			fjes_update_zone_irq(adapter, icr & REG_IS_MASK_EPID);