[dpdk-stable] patch 'net/qede: fix legacy interrupt mode' has been queued to LTS release 17.11.4
Yongseok Koh
yskoh at mellanox.com
Fri Jul 27 04:09:22 CEST 2018
Hi,
FYI, your patch has been queued to LTS release 17.11.4
Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 07/28/18. So please
shout if anyone has objections.
Thanks.
Yongseok
---
>From 13c7547c41d0504d6932421ce2f6e124b8754496 Mon Sep 17 00:00:00 2001
From: Shahed Shaikh <shahed.shaikh at cavium.com>
Date: Sat, 23 Jun 2018 14:20:32 -0700
Subject: [PATCH] net/qede: fix legacy interrupt mode
[ upstream commit 245aec2893380e442169c8a1914c36daa444efd3 ]
qede pmd does not have support for legacy interrupt mode.
This causes slow path completion failure with uio_pci_generic module,
since it uses legacy interrupt (INTx) mode.
Fix this issue by installing legacy interrupt handler.
Fixes: ec94dbc57362 ("qede: add base driver")
Signed-off-by: Shahed Shaikh <shahed.shaikh at cavium.com>
---
drivers/net/qede/qede_ethdev.c | 40 +++++++++++++++++++++++++++++++++++++---
drivers/net/qede/qede_main.c | 2 +-
2 files changed, 38 insertions(+), 4 deletions(-)
diff --git a/drivers/net/qede/qede_ethdev.c b/drivers/net/qede/qede_ethdev.c
index c63b4d5c9..ee439ae6c 100644
--- a/drivers/net/qede/qede_ethdev.c
+++ b/drivers/net/qede/qede_ethdev.c
@@ -336,6 +336,24 @@ static void qede_interrupt_action(struct ecore_hwfn *p_hwfn)
}
static void
+qede_interrupt_handler_intx(void *param)
+{
+ struct rte_eth_dev *eth_dev = (struct rte_eth_dev *)param;
+ struct qede_dev *qdev = eth_dev->data->dev_private;
+ struct ecore_dev *edev = &qdev->edev;
+ u64 status;
+
+ /* Check if our device actually raised an interrupt */
+ status = ecore_int_igu_read_sisr_reg(ECORE_LEADING_HWFN(edev));
+ if (status & 0x1) {
+ qede_interrupt_action(ECORE_LEADING_HWFN(edev));
+
+ if (rte_intr_enable(eth_dev->intr_handle))
+ DP_ERR(edev, "rte_intr_enable failed\n");
+ }
+}
+
+static void
qede_interrupt_handler(void *param)
{
struct rte_eth_dev *eth_dev = (struct rte_eth_dev *)param;
@@ -2844,6 +2862,7 @@ static int qede_common_dev_init(struct rte_eth_dev *eth_dev, bool is_vf)
/* Fix up ecore debug level */
uint32_t dp_module = ~0 & ~ECORE_MSG_HW;
uint8_t dp_level = ECORE_LEVEL_VERBOSE;
+ uint32_t int_mode;
int rc;
/* Extract key data structures */
@@ -2888,8 +2907,22 @@ static int qede_common_dev_init(struct rte_eth_dev *eth_dev, bool is_vf)
return -ENODEV;
}
qede_update_pf_params(edev);
- rte_intr_callback_register(&pci_dev->intr_handle,
- qede_interrupt_handler, (void *)eth_dev);
+
+ switch (pci_dev->intr_handle.type) {
+ case RTE_INTR_HANDLE_UIO_INTX:
+ case RTE_INTR_HANDLE_VFIO_LEGACY:
+ int_mode = ECORE_INT_MODE_INTA;
+ rte_intr_callback_register(&pci_dev->intr_handle,
+ qede_interrupt_handler_intx,
+ (void *)eth_dev);
+ break;
+ default:
+ int_mode = ECORE_INT_MODE_MSIX;
+ rte_intr_callback_register(&pci_dev->intr_handle,
+ qede_interrupt_handler,
+ (void *)eth_dev);
+ }
+
if (rte_intr_enable(&pci_dev->intr_handle)) {
DP_ERR(edev, "rte_intr_enable() failed\n");
return -ENODEV;
@@ -2897,7 +2930,8 @@ static int qede_common_dev_init(struct rte_eth_dev *eth_dev, bool is_vf)
/* Start the Slowpath-process */
memset(¶ms, 0, sizeof(struct qed_slowpath_params));
- params.int_mode = ECORE_INT_MODE_MSIX;
+
+ params.int_mode = int_mode;
params.drv_major = QEDE_PMD_VERSION_MAJOR;
params.drv_minor = QEDE_PMD_VERSION_MINOR;
params.drv_rev = QEDE_PMD_VERSION_REVISION;
diff --git a/drivers/net/qede/qede_main.c b/drivers/net/qede/qede_main.c
index 373139d7a..95b4cd91b 100644
--- a/drivers/net/qede/qede_main.c
+++ b/drivers/net/qede/qede_main.c
@@ -279,7 +279,7 @@ static int qed_slowpath_start(struct ecore_dev *edev,
/* Start the slowpath */
memset(&hw_init_params, 0, sizeof(hw_init_params));
hw_init_params.b_hw_start = true;
- hw_init_params.int_mode = ECORE_INT_MODE_MSIX;
+ hw_init_params.int_mode = params->int_mode;
hw_init_params.allow_npar_tx_switch = true;
hw_init_params.bin_fw_data = data;
--
2.11.0
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