From: Venkat Kumar Ande <venkatkumar.ande@amd.com>
To: <dev@dpdk.org>
Cc: <Selwin.Sebastian@amd.com>,
Venkat Kumar Ande <VenkatKumar.Ande@amd.com>, <stable@dpdk.org>,
Selwin Sebastian <selwin.sebastian@amd.com>
Subject: [PATCH v3 12/25] net/axgbe: delay AN timeout during KR training
Date: Tue, 4 Jun 2024 17:41:44 +0530 [thread overview]
Message-ID: <20240604121157.3052-12-venkatkumar.ande@amd.com> (raw)
In-Reply-To: <20240604121157.3052-1-venkatkumar.ande@amd.com>
From: Venkat Kumar Ande <VenkatKumar.Ande@amd.com>
AN restart triggered during KR training not only aborts the KR training
process but also move the HW to unstable state. Driver has to wait up to
500ms or until the KR training is completed before restarting AN cycle.
Without the fix the user will face KR training failure issues.
Fixes: a5c7273771e8 ("net/axgbe: add phy programming APIs")
Cc: stable@dpdk.org
Signed-off-by: Venkat Kumar Ande <VenkatKumar.Ande@amd.com>
Acked-by: Selwin Sebastian <selwin.sebastian@amd.com>
---
drivers/net/axgbe/axgbe_ethdev.h | 2 ++
drivers/net/axgbe/axgbe_mdio.c | 25 +++++++++++++++++++++++++
2 files changed, 27 insertions(+)
diff --git a/drivers/net/axgbe/axgbe_ethdev.h b/drivers/net/axgbe/axgbe_ethdev.h
index f122dfd516..d1fac667c2 100644
--- a/drivers/net/axgbe/axgbe_ethdev.h
+++ b/drivers/net/axgbe/axgbe_ethdev.h
@@ -111,6 +111,7 @@
/* Auto-negotiation */
#define AXGBE_AN_MS_TIMEOUT 500
#define AXGBE_LINK_TIMEOUT 5
+#define AXGBE_KR_TRAINING_WAIT_ITER 50
#define AXGBE_SGMII_AN_LINK_STATUS BIT(1)
#define AXGBE_SGMII_AN_LINK_SPEED (BIT(2) | BIT(3))
@@ -661,6 +662,7 @@ struct axgbe_port {
unsigned int parallel_detect;
unsigned int fec_ability;
unsigned long an_start;
+ unsigned long kr_start_time;
enum axgbe_an_mode an_mode;
/* I2C support */
diff --git a/drivers/net/axgbe/axgbe_mdio.c b/drivers/net/axgbe/axgbe_mdio.c
index b03bc471cb..e1a737cf62 100644
--- a/drivers/net/axgbe/axgbe_mdio.c
+++ b/drivers/net/axgbe/axgbe_mdio.c
@@ -357,6 +357,7 @@ static enum axgbe_an axgbe_an73_tx_training(struct axgbe_port *pdata,
reg |= AXGBE_KR_TRAINING_ENABLE;
reg |= AXGBE_KR_TRAINING_START;
XMDIO_WRITE(pdata, MDIO_MMD_PMAPMD, MDIO_PMA_10GBR_PMD_CTRL, reg);
+ pdata->kr_start_time = rte_get_timer_cycles();
PMD_DRV_LOG(DEBUG, "KR training initiated\n");
if (pdata->phy_if.phy_impl.kr_training_post)
@@ -487,6 +488,7 @@ static enum axgbe_an axgbe_an73_incompat_link(struct axgbe_port *pdata)
axgbe_an_disable(pdata);
axgbe_switch_mode(pdata);
+ pdata->an_result = AXGBE_AN_READY;
axgbe_an_restart(pdata);
return AXGBE_AN_INCOMPAT_LINK;
@@ -967,11 +969,34 @@ static void axgbe_check_link_timeout(struct axgbe_port *pdata)
{
unsigned long link_timeout;
unsigned long ticks;
+ unsigned long kr_time;
+ int wait;
link_timeout = pdata->link_check + (AXGBE_LINK_TIMEOUT *
2 * rte_get_timer_hz());
ticks = rte_get_timer_cycles();
if (time_after(ticks, link_timeout)) {
+ if ((axgbe_cur_mode(pdata) == AXGBE_MODE_KR) &&
+ pdata->phy.autoneg == AUTONEG_ENABLE) {
+ /* AN restart should not happen while KR training is in progress.
+ * The while loop ensures no AN restart during KR training,
+ * waits up to 500ms and AN restart is triggered only if KR
+ * training is failed.
+ */
+ wait = AXGBE_KR_TRAINING_WAIT_ITER;
+ while (wait--) {
+ kr_time = pdata->kr_start_time +
+ msecs_to_timer_cycles(AXGBE_AN_MS_TIMEOUT);
+ ticks = rte_get_timer_cycles();
+ if (time_after(ticks, kr_time))
+ break;
+ /* AN restart is not required, if AN result is COMPLETE */
+ if (pdata->an_result == AXGBE_AN_COMPLETE)
+ return;
+ rte_delay_us(10500);
+ }
+ }
+
PMD_DRV_LOG(NOTICE, "AN link timeout\n");
axgbe_phy_config_aneg(pdata);
}
--
2.34.1
next prev parent reply other threads:[~2024-06-04 12:13 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20240507124305.2318-1-VenkatKumar.Ande@amd.com>
2024-06-04 12:11 ` [PATCH v3 01/25] net/axgbe: fix mdio access for non-zero ports and CL45 PHYs Venkat Kumar Ande
2024-06-04 12:11 ` [PATCH v3 02/25] net/axgbe: reset link when the link never comes back Venkat Kumar Ande
2024-06-04 12:11 ` [PATCH v3 03/25] net/axgbe: fix fluctuations for 1G BELFUSE SFP Venkat Kumar Ande
2024-06-04 12:11 ` [PATCH v3 04/25] net/axgbe: update DMA coherency values Venkat Kumar Ande
2024-06-04 12:11 ` [PATCH v3 05/25] net/axgbe: disable interrupts during device removal Venkat Kumar Ande
2024-06-04 12:11 ` [PATCH v3 06/25] net/axgbe: yellow carp devices do not need rrc Venkat Kumar Ande
2024-06-04 12:11 ` [PATCH v3 07/25] net/axgbe: enable PLL control for fixed PHY modes only Venkat Kumar Ande
2024-06-04 12:11 ` [PATCH v3 08/25] net/axgbe: fix the SFP codes check for DAC cables Venkat Kumar Ande
2024-06-04 12:11 ` [PATCH v3 09/25] net/axgbe: fix logic around active and passive cables Venkat Kumar Ande
2024-06-04 12:11 ` [PATCH v3 10/25] net/axgbe: check only the minimum speed for cables Venkat Kumar Ande
2024-06-04 12:11 ` [PATCH v3 11/25] net/axgbe: flow Tx Ctrl Registers are h/w version dependent Venkat Kumar Ande
2024-06-04 12:11 ` Venkat Kumar Ande [this message]
2024-06-04 12:11 ` [PATCH v3 13/25] net/axgbe: fix the false linkup in axgbe PHY status Venkat Kumar Ande
2024-06-04 12:11 ` [PATCH v3 14/25] net/axgbe: remove use of comm owned field Venkat Kumar Ande
2024-06-04 12:11 ` [PATCH v3 15/25] net/axgbe: remove field of SFP diagnostic support Venkat Kumar Ande
2024-06-04 12:11 ` [PATCH v3 16/25] net/axgbe: improve SFP 100Mbps auto-negotiation Venkat Kumar Ande
2024-06-04 12:11 ` [PATCH v3 17/25] net/axgbe: remove unnecessary conversion to bool Venkat Kumar Ande
2024-06-04 12:11 ` [PATCH v3 18/25] net/axgbe: use definitions for mailbox commands Venkat Kumar Ande
2024-06-04 12:11 ` [PATCH v3 19/25] net/axgbe: add support for 10 Mbps speed Venkat Kumar Ande
2024-06-04 12:11 ` [PATCH v3 20/25] net/axgbe: separate C22 and C45 transactions Venkat Kumar Ande
2024-06-04 12:11 ` [PATCH v3 21/25] net/axgbe: replace mii generic macro for c45 with AXGBE Venkat Kumar Ande
2024-06-04 12:11 ` [PATCH v3 22/25] net/axgbe: add 2.5GbE support to 10G BaseT mode Venkat Kumar Ande
2024-06-04 12:11 ` [PATCH v3 23/25] net/axgbe: add support for Rx adaptation Venkat Kumar Ande
2024-06-04 12:11 ` [PATCH v3 24/25] net/axgbe: extend 10Mbps support to MAC version 21H Venkat Kumar Ande
2024-06-04 12:11 ` [PATCH v3 25/25] net/axgbe: modify debug messages Venkat Kumar Ande
2024-06-05 17:07 ` [PATCH v3 01/25] net/axgbe: fix mdio access for non-zero ports and CL45 PHYs Ferruh Yigit
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