From mboxrd@z Thu Jan 1 00:00:00 1970 From: Salil Mehta Subject: [PATCH net-next 4/9] net: hns3: Add support to request VF Reset to PF Date: Thu, 22 Mar 2018 14:28:55 +0000 Message-ID: <20180322142900.22860-5-salil.mehta@huawei.com> References: <20180322142900.22860-1-salil.mehta@huawei.com> Mime-Version: 1.0 Content-Type: text/plain Cc: , , , , , To: Return-path: In-Reply-To: <20180322142900.22860-1-salil.mehta@huawei.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org VF driver depends upon PF to eventually reset the hardware. This request is made using the mailbox command. This patch adds the required function to acheive above. Signed-off-by: Salil Mehta --- .../net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c index 0d204e2..b648311 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c @@ -832,6 +832,20 @@ static void hclgevf_reset_tqp(struct hnae3_handle *handle, u16 queue_id) 2, true, NULL, 0); } +static int hclgevf_do_reset(struct hclgevf_dev *hdev) +{ + int status; + u8 respmsg; + + status = hclgevf_send_mbx_msg(hdev, HCLGE_MBX_RESET, 0, NULL, + 0, false, &respmsg, sizeof(u8)); + if (status) + dev_err(&hdev->pdev->dev, + "VF reset request to PF failed(=%d)\n", status); + + return status; +} + static void hclgevf_reset_event(struct hnae3_handle *handle) { struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle); @@ -910,6 +924,7 @@ static void hclgevf_reset_service_task(struct work_struct *work) { struct hclgevf_dev *hdev = container_of(work, struct hclgevf_dev, rst_service_task); + int ret; if (test_and_set_bit(HCLGEVF_STATE_RST_HANDLING, &hdev->state)) return; @@ -965,6 +980,10 @@ static void hclgevf_reset_service_task(struct work_struct *work) hdev->reset_attempts++; /* request PF for resetting this VF via mailbox */ + ret = hclgevf_do_reset(hdev); + if (ret) + dev_warn(&hdev->pdev->dev, + "VF rst fail, stack will call\n"); } } -- 2.7.4