[PATCH net-next 0/2][pull request] Intel Wired LAN Driver Updates 2022-08-18 (ixgbe)

[PATCH net-next 0/2][pull request] Intel Wired LAN Driver Updates 2022-08-18 (ixgbe)

[Tony Nguyen]

This series contains updates to ixgbe driver only.

Fabio M. De Francesco replaces kmap() call to page_address() for
rx_buffer->page().

Jeff Daly adds a manual AN-37 restart to help resolve issues with some link
partners.

The following are changes since commit e34cfee65ec891a319ce79797dda18083af33a76:
  stmmac: intel: remove unused 'has_crossts' flag
and are available in the git repository at:
  git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue 10GbE

Fabio M. De Francesco (1):
  ixgbe: Don't call kmap() on page allocated with GFP_ATOMIC

Jeff Daly (1):
  ixgbe: Manual AN-37 for troublesome link partners for X550 SFI

 .../net/ethernet/intel/ixgbe/ixgbe_ethtool.c  |  4 +-
 drivers/net/ethernet/intel/ixgbe/ixgbe_type.h |  3 +
 drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c | 56 ++++++++++++++++++-
 3 files changed, 57 insertions(+), 6 deletions(-)

-- 
2.35.1

[PATCH net-next 1/2] ixgbe: Don't call kmap() on page allocated with GFP_ATOMIC

[Tony Nguyen]

From: "Fabio M. De Francesco" <fmdefrancesco@gmail.com>

Pages allocated with GFP_ATOMIC cannot come from Highmem. This is why
there is no need to call kmap() on them.

Therefore, don't call kmap() on rx_buffer->page() and instead use a
plain page_address() to get the kernel address.

Suggested-by: Ira Weiny <ira.weiny@intel.com>
Suggested-by: Alexander Duyck <alexander.duyck@gmail.com>
Signed-off-by: Fabio M. De Francesco <fmdefrancesco@gmail.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Tested-by: Gurucharan <gurucharanx.g@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
---
 drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
index 04f453eabef6..cb5c707538a5 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c
@@ -1964,15 +1964,13 @@ static bool ixgbe_check_lbtest_frame(struct ixgbe_rx_buffer *rx_buffer,
 
 	frame_size >>= 1;
 
-	data = kmap(rx_buffer->page) + rx_buffer->page_offset;
+	data = page_address(rx_buffer->page) + rx_buffer->page_offset;
 
 	if (data[3] != 0xFF ||
 	    data[frame_size + 10] != 0xBE ||
 	    data[frame_size + 12] != 0xAF)
 		match = false;
 
-	kunmap(rx_buffer->page);
-
 	return match;
 }
 
-- 
2.35.1

[PATCH net-next 2/2] ixgbe: Manual AN-37 for troublesome link partners for X550 SFI

[Tony Nguyen]

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, &reg_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, &reg_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, &reg_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, &reg_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, &reg_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

Re: [PATCH net-next 0/2][pull request] Intel Wired LAN Driver Updates 2022-08-18 (ixgbe)

[patchwork-bot+netdevbpf]

Hello:

This series was applied to netdev/net-next.git (master)
by Tony Nguyen <anthony.l.nguyen@intel.com>:

On Thu, 18 Aug 2022 15:34:00 -0700 you wrote:
> This series contains updates to ixgbe driver only.
> 
> Fabio M. De Francesco replaces kmap() call to page_address() for
> rx_buffer->page().
> 
> Jeff Daly adds a manual AN-37 restart to help resolve issues with some link
> partners.
> 
> [...]

Here is the summary with links:
  - [net-next,1/2] ixgbe: Don't call kmap() on page allocated with GFP_ATOMIC
    https://git.kernel.org/netdev/net-next/c/03f51719df03
  - [net-next,2/2] ixgbe: Manual AN-37 for troublesome link partners for X550 SFI
    https://git.kernel.org/netdev/net-next/c/565736048bd5

You are awesome, thank you!
-- 
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