From mboxrd@z Thu Jan 1 00:00:00 1970 From: Taku Izumi Subject: [PATCH 21/22] fjes: handle receive cancellation request interrupt Date: Thu, 18 Jun 2015 09:49:46 +0900 Message-ID: <1434588587-25655-21-git-send-email-izumi.taku@jp.fujitsu.com> References: <1434588359-25589-1-git-send-email-izumi.taku@jp.fujitsu.com> <1434588587-25655-1-git-send-email-izumi.taku@jp.fujitsu.com> Return-path: Received: from mgwkm04.jp.fujitsu.com ([202.219.69.171]:47655 "EHLO mgwkm04.jp.fujitsu.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753265AbbFRAxb (ORCPT ); Wed, 17 Jun 2015 20:53:31 -0400 In-Reply-To: <1434588587-25655-1-git-send-email-izumi.taku@jp.fujitsu.com> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: platform-driver-x86@vger.kernel.org, dvhart@infradead.org Cc: rkhan@redhat.com, alexander.h.duyck@redhat.com, netdev@vger.kernel.org, linux-acpi@vger.kernel.org, Taku Izumi This patch adds implementation of handling IRQ of other receiver's receive cancellation request. Signed-off-by: Taku Izumi --- drivers/platform/x86/fjes/fjes_main.c | 85 +++++++++++++++++++++++++++++++++++ 1 file changed, 85 insertions(+) diff --git a/drivers/platform/x86/fjes/fjes_main.c b/drivers/platform/x86/fjes/fjes_main.c index f42441f..f33dafb 100644 --- a/drivers/platform/x86/fjes/fjes_main.c +++ b/drivers/platform/x86/fjes/fjes_main.c @@ -855,6 +855,81 @@ 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: + default: + break; + case EP_PARTNER_COMPLETE: + 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) { @@ -878,6 +953,16 @@ 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); -- 1.8.3.1