From: Wei Dai <wei.dai@intel.com>
To: dev@dpdk.org
Cc: helin.zhang@intel.com, konstantin.ananyev@intel.com,
Wei Dai <wei.dai@intel.com>
Subject: [dpdk-dev] [PATCH v2 05/30] net/ixgbe/base: clean up X557 link status check
Date: Wed, 21 Dec 2016 17:47:49 +0800 [thread overview]
Message-ID: <1482313694-31602-6-git-send-email-wei.dai@intel.com> (raw)
In-Reply-To: <1482313694-31602-1-git-send-email-wei.dai@intel.com>
This patch cleans up the code and clarifies the comment around
the X557 PHY link status check in ixgbe_check_link_t_x550em().
Signed-off-by: Wei Dai <wei.dai@intel.com>
---
drivers/net/ixgbe/base/ixgbe_x550.c | 25 +++++++++++--------------
1 file changed, 11 insertions(+), 14 deletions(-)
diff --git a/drivers/net/ixgbe/base/ixgbe_x550.c b/drivers/net/ixgbe/base/ixgbe_x550.c
index f5143f9..69aa9d5 100644
--- a/drivers/net/ixgbe/base/ixgbe_x550.c
+++ b/drivers/net/ixgbe/base/ixgbe_x550.c
@@ -4660,7 +4660,7 @@ s32 ixgbe_check_link_t_X550em(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
bool *link_up, bool link_up_wait_to_complete)
{
u32 status;
- u16 autoneg_status;
+ u16 i, autoneg_status = 0;
if (hw->mac.ops.get_media_type(hw) != ixgbe_media_type_copper)
return IXGBE_ERR_CONFIG;
@@ -4673,21 +4673,18 @@ s32 ixgbe_check_link_t_X550em(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
return status;
/* MAC link is up, so check external PHY link.
- * Read this twice back to back to indicate current status.
+ * X557 PHY. Link status is latching low, and can only be used to detect
+ * link drop, and not the current status of the link without performing
+ * back-to-back reads.
*/
- status = hw->phy.ops.read_reg(hw, IXGBE_MDIO_AUTO_NEG_STATUS,
- IXGBE_MDIO_AUTO_NEG_DEV_TYPE,
- &autoneg_status);
-
- if (status != IXGBE_SUCCESS)
- return status;
-
- status = hw->phy.ops.read_reg(hw, IXGBE_MDIO_AUTO_NEG_STATUS,
- IXGBE_MDIO_AUTO_NEG_DEV_TYPE,
- &autoneg_status);
+ for (i = 0; i < 2; i++) {
+ status = hw->phy.ops.read_reg(hw, IXGBE_MDIO_AUTO_NEG_STATUS,
+ IXGBE_MDIO_AUTO_NEG_DEV_TYPE,
+ &autoneg_status);
- if (status != IXGBE_SUCCESS)
- return status;
+ if (status != IXGBE_SUCCESS)
+ return status;
+ }
/* If external PHY link is not up, then indicate link not up */
if (!(autoneg_status & IXGBE_MDIO_AUTO_NEG_LINK_STATUS))
--
2.7.4
next prev parent reply other threads:[~2016-12-21 9:51 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-21 9:47 [dpdk-dev] [PATCH v2 00/30] update ixgbe shared code to version 16.11.21 Wei Dai
2016-12-21 9:47 ` [dpdk-dev] [PATCH v2 01/30] net/ixgbe/base: fix PHY reset check for x550em-ext Wei Dai
2016-12-21 9:47 ` [dpdk-dev] [PATCH v2 02/30] net/ixgbe/base: fix clearing SAN MAC address Wei Dai
2016-12-21 9:47 ` [dpdk-dev] [PATCH v2 03/30] net/ixgbe/base: use fast MDIO for non-10G devices Wei Dai
2016-12-21 9:47 ` [dpdk-dev] [PATCH v2 04/30] net/ixgbe/base: fix PHY identification for x550a Wei Dai
2016-12-21 9:47 ` Wei Dai [this message]
2016-12-21 9:47 ` [dpdk-dev] [PATCH v2 06/30] net/ixgbe/base: add driver version to firmware Wei Dai
2016-12-21 9:47 ` [dpdk-dev] [PATCH v2 07/30] net/ixgbe/base: store link active LED Wei Dai
2016-12-21 9:47 ` [dpdk-dev] [PATCH v2 08/30] net/ixgbe/base: cleanup X540 checksum calculation Wei Dai
2016-12-21 9:47 ` [dpdk-dev] [PATCH v2 09/30] net/ixgbe/base: enable LASI only for X552 devices Wei Dai
2016-12-21 9:47 ` [dpdk-dev] [PATCH v2 10/30] net/ixgbe/base: limit iXFI setup to " Wei Dai
2016-12-21 9:47 ` [dpdk-dev] [PATCH v2 11/30] net/ixgbe/base: fix getting PHY type for some x550 devices Wei Dai
2016-12-21 9:47 ` [dpdk-dev] [PATCH v2 12/30] net/ixgbe/base: fix SGMII link setup for M88 PHYs Wei Dai
2016-12-21 9:47 ` [dpdk-dev] [PATCH v2 13/30] net/ixgbe/base: cleanup dead EEE code Wei Dai
2016-12-21 9:47 ` [dpdk-dev] [PATCH v2 14/30] net/ixgbe/base: fix setting unsupported autoneg speeds Wei Dai
2016-12-21 9:47 ` [dpdk-dev] [PATCH v2 15/30] net/ixgbe/base: support FW commands to control some PHYs Wei Dai
2016-12-21 9:48 ` [dpdk-dev] [PATCH v2 16/30] net/ixgbe/base: use " Wei Dai
2016-12-21 9:48 ` [dpdk-dev] [PATCH v2 17/30] net/ixgbe/base: support busy SGMII register reads Wei Dai
2016-12-21 9:48 ` [dpdk-dev] [PATCH v2 18/30] net/ixgbe/base: include new speeds in VFLINK interpretation Wei Dai
2016-12-21 9:48 ` [dpdk-dev] [PATCH v2 19/30] net/ixgbe/base: limit 5Gb support to X550 devices Wei Dai
2016-12-21 9:48 ` [dpdk-dev] [PATCH v2 20/30] net/ixgbe/base: add physical layer options for FW PHY type Wei Dai
2016-12-21 9:48 ` [dpdk-dev] [PATCH v2 21/30] net/ixgbe/base: remove unneeded MAC type check Wei Dai
2016-12-21 9:48 ` [dpdk-dev] [PATCH v2 22/30] net/ixgbe/base: remove unused PHY ID Wei Dai
2016-12-21 9:48 ` [dpdk-dev] [PATCH v2 23/30] net/ixgbe/base: update FW PHY flow control Wei Dai
2016-12-21 9:48 ` [dpdk-dev] [PATCH v2 24/30] net/ixgbe/base: add EEE support for some PHYs Wei Dai
2016-12-21 9:48 ` [dpdk-dev] [PATCH v2 25/30] net/ixgbe/base: remove unused enum type Wei Dai
2016-12-21 9:48 ` [dpdk-dev] [PATCH v2 26/30] net/ixgbe/base: fix IXGBE LSWFW register Wei Dai
2016-12-21 9:48 ` [dpdk-dev] [PATCH v2 27/30] net/ixgbe/base: remove unused EEE code Wei Dai
2016-12-21 9:48 ` [dpdk-dev] [PATCH v2 28/30] net/ixgbe/base: add write flush required by Inphi PHY Wei Dai
2016-12-21 9:48 ` [dpdk-dev] [PATCH v2 29/30] net/ixgbe/base: report physical layer for SGMII PHY type Wei Dai
2016-12-21 9:48 ` [dpdk-dev] [PATCH v2 30/30] net/ixgbe/base: update shared code version to 2016.11.21 Wei Dai
2016-12-21 17:20 ` [dpdk-dev] [PATCH v2 00/30] update ixgbe shared code to version 16.11.21 Ferruh Yigit
2016-12-22 2:35 ` Dai, Wei
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