From 362488e631f5f723e3663068a02cddbad87d22aa Mon Sep 17 00:00:00 2001 From: Luca Boccassi Date: Fri, 27 Jul 2018 19:13:17 +0100 Subject: [PATCH] net/e1000: enable MSI-x for linkup and other events in 82574 Linux supports 82574 MSI-x interrupt for linkup and other link conditions. Enable the same feature in the e1000 PMD in order to allow this card to work properly, as it requires interrupt handling for link negotiations among other things. Signed-off-by: Luca Boccassi Acked-by: Wei Zhao --- drivers/net/e1000/base/e1000_82571.c | 5 +++++ drivers/net/e1000/em_ethdev.c | 5 +++-- 2 files changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/net/e1000/base/e1000_82571.c b/drivers/net/e1000/base/e1000_82571.c index 7c279dbb3c..397dd9482e 100644 --- a/drivers/net/e1000/base/e1000_82571.c +++ b/drivers/net/e1000/base/e1000_82571.c @@ -1257,6 +1257,11 @@ STATIC s32 e1000_init_hw_82571(struct e1000_hw *hw) */ e1000_clear_hw_cntrs_82571(hw); + /* MSI-X configure for 82574 */ + if (mac->type == e1000_82574) + E1000_WRITE_REG(hw, E1000_IVAR, + (E1000_IVAR_INT_ALLOC_VALID << 16)); + return ret_val; } diff --git a/drivers/net/e1000/em_ethdev.c b/drivers/net/e1000/em_ethdev.c index 053e855b1a..28c1535123 100644 --- a/drivers/net/e1000/em_ethdev.c +++ b/drivers/net/e1000/em_ethdev.c @@ -1444,7 +1444,8 @@ eth_em_interrupt_setup(struct rte_eth_dev *dev) /* clear interrupt */ E1000_READ_REG(hw, E1000_ICR); regval = E1000_READ_REG(hw, E1000_IMS); - E1000_WRITE_REG(hw, E1000_IMS, regval | E1000_ICR_LSC); + E1000_WRITE_REG(hw, E1000_IMS, + regval | E1000_ICR_LSC | E1000_ICR_OTHER); return 0; } @@ -1494,7 +1495,7 @@ em_rxq_intr_enable(struct e1000_hw *hw) static void em_lsc_intr_disable(struct e1000_hw *hw) { - E1000_WRITE_REG(hw, E1000_IMC, E1000_IMS_LSC); + E1000_WRITE_REG(hw, E1000_IMC, E1000_IMS_LSC | E1000_IMS_OTHER); E1000_WRITE_FLUSH(hw); } -- 2.20.1