From: Tony Nguyen <anthony.l.nguyen@intel.com>
To: davem@davemloft.net, kuba@kernel.org, pabeni@redhat.com,
edumazet@google.com
Cc: Jeff Daly <jeffd@silicom-usa.com>,
netdev@vger.kernel.org, anthony.l.nguyen@intel.com,
Dave Switzer <david.switzer@intel.com>
Subject: [PATCH net-next 2/2] ixgbe: Manual AN-37 for troublesome link partners for X550 SFI
Date: Thu, 18 Aug 2022 15:34:02 -0700 [thread overview]
Message-ID: <20220818223402.1294091-3-anthony.l.nguyen@intel.com> (raw)
In-Reply-To: <20220818223402.1294091-1-anthony.l.nguyen@intel.com>
From: Jeff Daly <jeffd@silicom-usa.com>
Some (Juniper MX5) SFP link partners exhibit a disinclination to
autonegotiate with X550 configured in SFI mode. This patch enables
a manual AN-37 restart to work around the problem.
Signed-off-by: Jeff Daly <jeffd@silicom-usa.com>
Tested-by: Dave Switzer <david.switzer@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
---
drivers/net/ethernet/intel/ixgbe/ixgbe_type.h | 3 +
drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c | 56 ++++++++++++++++++-
2 files changed, 56 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h b/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h
index 7f7ea468ffa9..2b00db92b08f 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h
@@ -3712,7 +3712,9 @@ struct ixgbe_info {
#define IXGBE_KRM_LINK_S1(P) ((P) ? 0x8200 : 0x4200)
#define IXGBE_KRM_LINK_CTRL_1(P) ((P) ? 0x820C : 0x420C)
#define IXGBE_KRM_AN_CNTL_1(P) ((P) ? 0x822C : 0x422C)
+#define IXGBE_KRM_AN_CNTL_4(P) ((P) ? 0x8238 : 0x4238)
#define IXGBE_KRM_AN_CNTL_8(P) ((P) ? 0x8248 : 0x4248)
+#define IXGBE_KRM_PCS_KX_AN(P) ((P) ? 0x9918 : 0x5918)
#define IXGBE_KRM_SGMII_CTRL(P) ((P) ? 0x82A0 : 0x42A0)
#define IXGBE_KRM_LP_BASE_PAGE_HIGH(P) ((P) ? 0x836C : 0x436C)
#define IXGBE_KRM_DSP_TXFFE_STATE_4(P) ((P) ? 0x8634 : 0x4634)
@@ -3722,6 +3724,7 @@ struct ixgbe_info {
#define IXGBE_KRM_PMD_FLX_MASK_ST20(P) ((P) ? 0x9054 : 0x5054)
#define IXGBE_KRM_TX_COEFF_CTRL_1(P) ((P) ? 0x9520 : 0x5520)
#define IXGBE_KRM_RX_ANA_CTL(P) ((P) ? 0x9A00 : 0x5A00)
+#define IXGBE_KRM_FLX_TMRS_CTRL_ST31(P) ((P) ? 0x9180 : 0x5180)
#define IXGBE_KRM_PMD_FLX_MASK_ST20_SFI_10G_DA ~(0x3 << 20)
#define IXGBE_KRM_PMD_FLX_MASK_ST20_SFI_10G_SR BIT(20)
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c
index 35c2b9b8bd19..aa4bf6c9a2f7 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c
@@ -1721,9 +1721,59 @@ static s32 ixgbe_setup_sfi_x550a(struct ixgbe_hw *hw, ixgbe_link_speed *speed)
return IXGBE_ERR_LINK_SETUP;
}
- status = mac->ops.write_iosf_sb_reg(hw,
- IXGBE_KRM_PMD_FLX_MASK_ST20(hw->bus.lan_id),
- IXGBE_SB_IOSF_TARGET_KR_PHY, reg_val);
+ (void)mac->ops.write_iosf_sb_reg(hw,
+ IXGBE_KRM_PMD_FLX_MASK_ST20(hw->bus.lan_id),
+ IXGBE_SB_IOSF_TARGET_KR_PHY, reg_val);
+
+ /* change mode enforcement rules to hybrid */
+ (void)mac->ops.read_iosf_sb_reg(hw,
+ IXGBE_KRM_FLX_TMRS_CTRL_ST31(hw->bus.lan_id),
+ IXGBE_SB_IOSF_TARGET_KR_PHY, ®_val);
+ reg_val |= 0x0400;
+
+ (void)mac->ops.write_iosf_sb_reg(hw,
+ IXGBE_KRM_FLX_TMRS_CTRL_ST31(hw->bus.lan_id),
+ IXGBE_SB_IOSF_TARGET_KR_PHY, reg_val);
+
+ /* manually control the config */
+ (void)mac->ops.read_iosf_sb_reg(hw,
+ IXGBE_KRM_LINK_CTRL_1(hw->bus.lan_id),
+ IXGBE_SB_IOSF_TARGET_KR_PHY, ®_val);
+ reg_val |= 0x20002240;
+
+ (void)mac->ops.write_iosf_sb_reg(hw,
+ IXGBE_KRM_LINK_CTRL_1(hw->bus.lan_id),
+ IXGBE_SB_IOSF_TARGET_KR_PHY, reg_val);
+
+ /* move the AN base page values */
+ (void)mac->ops.read_iosf_sb_reg(hw,
+ IXGBE_KRM_PCS_KX_AN(hw->bus.lan_id),
+ IXGBE_SB_IOSF_TARGET_KR_PHY, ®_val);
+ reg_val |= 0x1;
+
+ (void)mac->ops.write_iosf_sb_reg(hw,
+ IXGBE_KRM_PCS_KX_AN(hw->bus.lan_id),
+ IXGBE_SB_IOSF_TARGET_KR_PHY, reg_val);
+
+ /* set the AN37 over CB mode */
+ (void)mac->ops.read_iosf_sb_reg(hw,
+ IXGBE_KRM_AN_CNTL_4(hw->bus.lan_id),
+ IXGBE_SB_IOSF_TARGET_KR_PHY, ®_val);
+ reg_val |= 0x20000000;
+
+ (void)mac->ops.write_iosf_sb_reg(hw,
+ IXGBE_KRM_AN_CNTL_4(hw->bus.lan_id),
+ IXGBE_SB_IOSF_TARGET_KR_PHY, reg_val);
+
+ /* restart AN manually */
+ (void)mac->ops.read_iosf_sb_reg(hw,
+ IXGBE_KRM_LINK_CTRL_1(hw->bus.lan_id),
+ IXGBE_SB_IOSF_TARGET_KR_PHY, ®_val);
+ reg_val |= IXGBE_KRM_LINK_CTRL_1_TETH_AN_RESTART;
+
+ (void)mac->ops.write_iosf_sb_reg(hw,
+ IXGBE_KRM_LINK_CTRL_1(hw->bus.lan_id),
+ IXGBE_SB_IOSF_TARGET_KR_PHY, reg_val);
/* Toggle port SW reset by AN reset. */
status = ixgbe_restart_an_internal_phy_x550em(hw);
--
2.35.1
next prev parent reply other threads:[~2022-08-18 22:34 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-18 22:34 [PATCH net-next 0/2][pull request] Intel Wired LAN Driver Updates 2022-08-18 (ixgbe) Tony Nguyen
2022-08-18 22:34 ` [PATCH net-next 1/2] ixgbe: Don't call kmap() on page allocated with GFP_ATOMIC Tony Nguyen
2022-08-18 22:34 ` Tony Nguyen [this message]
2022-08-23 3:30 ` [PATCH net-next 0/2][pull request] Intel Wired LAN Driver Updates 2022-08-18 (ixgbe) patchwork-bot+netdevbpf
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20220818223402.1294091-3-anthony.l.nguyen@intel.com \
--to=anthony.l.nguyen@intel.com \
--cc=davem@davemloft.net \
--cc=david.switzer@intel.com \
--cc=edumazet@google.com \
--cc=jeffd@silicom-usa.com \
--cc=kuba@kernel.org \
--cc=netdev@vger.kernel.org \
--cc=pabeni@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.