openwrtv4/target/linux/generic/pending-4.9/735-net-phy-at803x-fix-at8033-sgmii-mode.patch
Stijn Tintel 2d02a4f5bd kernel: update 4.9 to 4.9.44
Refresh patches.
Adapt 704-phy-no-genphy-soft-reset.patch.
Remove brcm2708/950-0005-mm-Remove-the-PFN-busy-warning.patch.
Compile-tested on brcm2708/bcm2708 and x86/64.
Runtime-tested on brcm2708/bcm2708 and x86/64.

Fixes the following vulnerabilities:
- CVE-2017-7533
- CVE-2017-1000111
- CVE-2017-1000112

Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
2017-08-17 12:34:34 +02:00

54 lines
1.5 KiB
Diff

From: Roman Yeryomin <roman@advem.lv>
Subject: kernel: add at803x fix for sgmii mode
Some (possibly broken) bootloaders incorreclty initialize at8033
phy. This patch enables sgmii autonegotiation mode.
[john@phrozen.org: felix added this to his upstream queue]
Signed-off-by: Roman Yeryomin <roman@advem.lv>
---
drivers/net/phy/at803x.c | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -55,6 +55,10 @@
#define AT803X_DEBUG_ADDR 0x1D
#define AT803X_DEBUG_DATA 0x1E
+#define AT803X_REG_CHIP_CONFIG 0x1f
+#define AT803X_BT_BX_REG_SEL 0x8000
+#define AT803X_SGMII_ANEG_EN 0x1000
+
#define AT803X_MODE_CFG_MASK 0x0F
#define AT803X_MODE_CFG_SGMII 0x01
@@ -295,6 +299,27 @@ static int at803x_config_init(struct phy
{
struct at803x_platform_data *pdata;
int ret;
+ u32 v;
+
+ if (phydev->drv->phy_id == ATH8031_PHY_ID &&
+ phydev->interface == PHY_INTERFACE_MODE_SGMII)
+ {
+ v = phy_read(phydev, AT803X_REG_CHIP_CONFIG);
+ /* select SGMII/fiber page */
+ ret = phy_write(phydev, AT803X_REG_CHIP_CONFIG,
+ v & ~AT803X_BT_BX_REG_SEL);
+ if (ret)
+ return ret;
+ /* enable SGMII autonegotiation */
+ ret = phy_write(phydev, MII_BMCR, AT803X_SGMII_ANEG_EN);
+ if (ret)
+ return ret;
+ /* select copper page */
+ ret = phy_write(phydev, AT803X_REG_CHIP_CONFIG,
+ v | AT803X_BT_BX_REG_SEL);
+ if (ret)
+ return ret;
+ }
ret = genphy_config_init(phydev);
if (ret < 0)