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Message-ID: <1509626723-18619-5-git-send-email-lipeng321@huawei.com>
Date: Thu, 2 Nov 2017 20:45:18 +0800
From: Lipeng <lipeng321@...wei.com>
To: <davem@...emloft.net>
CC: <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<linuxarm@...wei.com>, <salil.mehta@...wei.com>,
<lipeng321@...wei.com>
Subject: [PATCH V2 net-next 4/9] net: hns3: Add support for misc interrupt
This patch adds initialization and deinitialization for misc interrupt.
This interrupt will be used to handle reset message(IRQ).
Signed-off-by: qumingguang <qumingguang@...wei.com>
Signed-off-by: Lipeng <lipeng321@...wei.com>
Signed-off-by: Yunsheng Lin <linyunsheng@...wei.com>
---
.../net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h | 5 ++
.../ethernet/hisilicon/hns3/hns3pf/hclge_main.c | 74 ++++++++++++++++++++++
.../ethernet/hisilicon/hns3/hns3pf/hclge_main.h | 2 +
3 files changed, 81 insertions(+)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h
index 6bdc216..db4d887 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h
@@ -63,6 +63,11 @@ enum hclge_cmd_status {
HCLGE_ERR_CSQ_ERROR = -3,
};
+struct hclge_misc_vector {
+ u8 __iomem *addr;
+ int vector_irq;
+};
+
struct hclge_cmq {
struct hclge_cmq_ring csq;
struct hclge_cmq_ring crq;
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
index cf0fafe..e45842e 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
@@ -2392,11 +2392,71 @@ static void hclge_service_complete(struct hclge_dev *hdev)
clear_bit(HCLGE_STATE_SERVICE_SCHED, &hdev->state);
}
+static void hclge_enable_vector(struct hclge_misc_vector *vector, bool enable)
+{
+ writel(enable ? 1 : 0, vector->addr);
+}
+
+static irqreturn_t hclge_misc_irq_handle(int irq, void *data)
+{
+ struct hclge_dev *hdev = data;
+
+ hclge_enable_vector(&hdev->misc_vector, false);
+ if (!test_and_set_bit(HCLGE_STATE_SERVICE_SCHED, &hdev->state))
+ schedule_work(&hdev->service_task);
+
+ return IRQ_HANDLED;
+}
+
+static void hclge_free_vector(struct hclge_dev *hdev, int vector_id)
+{
+ hdev->vector_status[vector_id] = HCLGE_INVALID_VPORT;
+ hdev->num_msi_left += 1;
+ hdev->num_msi_used -= 1;
+}
+
+static void hclge_get_misc_vector(struct hclge_dev *hdev)
+{
+ struct hclge_misc_vector *vector = &hdev->misc_vector;
+
+ vector->vector_irq = pci_irq_vector(hdev->pdev, 0);
+
+ vector->addr = hdev->hw.io_base + HCLGE_MISC_VECTOR_REG_BASE;
+ hdev->vector_status[0] = 0;
+
+ hdev->num_msi_left -= 1;
+ hdev->num_msi_used += 1;
+}
+
+static int hclge_misc_irq_init(struct hclge_dev *hdev)
+{
+ int ret;
+
+ hclge_get_misc_vector(hdev);
+
+ ret = devm_request_irq(&hdev->pdev->dev,
+ hdev->misc_vector.vector_irq,
+ hclge_misc_irq_handle, 0, "hclge_misc", hdev);
+ if (ret) {
+ hclge_free_vector(hdev, 0);
+ dev_err(&hdev->pdev->dev, "request misc irq(%d) fail\n",
+ hdev->misc_vector.vector_irq);
+ }
+
+ return ret;
+}
+
+static void hclge_misc_irq_service_task(struct hclge_dev *hdev)
+{
+ hclge_enable_vector(&hdev->misc_vector, true);
+}
+
static void hclge_service_task(struct work_struct *work)
{
struct hclge_dev *hdev =
container_of(work, struct hclge_dev, service_task);
+ hclge_misc_irq_service_task(hdev);
hclge_update_speed_duplex(hdev);
hclge_update_link_status(hdev);
hclge_update_stats_for_all(hdev);
@@ -4480,6 +4540,14 @@ static int hclge_init_ae_dev(struct hnae3_ae_dev *ae_dev)
return ret;
}
+ ret = hclge_misc_irq_init(hdev);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "Misc IRQ(vector0) init error, ret = %d.\n",
+ ret);
+ return ret;
+ }
+
ret = hclge_alloc_tqps(hdev);
if (ret) {
dev_err(&pdev->dev, "Allocate TQPs error, ret = %d.\n", ret);
@@ -4545,6 +4613,9 @@ static int hclge_init_ae_dev(struct hnae3_ae_dev *ae_dev)
timer_setup(&hdev->service_timer, hclge_service_timer, 0);
INIT_WORK(&hdev->service_task, hclge_service_task);
+ /* Enable MISC vector(vector0) */
+ hclge_enable_vector(&hdev->misc_vector, true);
+
set_bit(HCLGE_STATE_SERVICE_INITED, &hdev->state);
set_bit(HCLGE_STATE_DOWN, &hdev->state);
@@ -4577,6 +4648,9 @@ static void hclge_uninit_ae_dev(struct hnae3_ae_dev *ae_dev)
if (mac->phydev)
mdiobus_unregister(mac->mdio_bus);
+ /* Disable MISC vector(vector0) */
+ hclge_enable_vector(&hdev->misc_vector, false);
+ hclge_free_vector(hdev, 0);
hclge_destroy_cmd_queue(&hdev->hw);
hclge_pci_uninit(hdev);
ae_dev->priv = NULL;
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h
index bca4430..2a1d4d6 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h
@@ -27,6 +27,7 @@
(HCLGE_PF_CFG_BLOCK_SIZE / HCLGE_CFG_RD_LEN_BYTES)
#define HCLGE_VECTOR_REG_BASE 0x20000
+#define HCLGE_MISC_VECTOR_REG_BASE 0x20400
#define HCLGE_VECTOR_REG_OFFSET 0x4
#define HCLGE_VECTOR_VF_OFFSET 0x100000
@@ -400,6 +401,7 @@ struct hclge_dev {
struct pci_dev *pdev;
struct hnae3_ae_dev *ae_dev;
struct hclge_hw hw;
+ struct hclge_misc_vector misc_vector;
struct hclge_hw_stats hw_stats;
unsigned long state;
--
1.9.1
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