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Subject[PATCH 33/37] atl1c: add PHY link event(up/down) patch
Date
On some platforms the PHY settings need to change depending on the
cable link status to get better stability.

Signed-off-by: xiong <xiong@qca.qualcomm.com>
Tested-by: Liu David <dwliu@qca.qualcomm.com>
---
drivers/net/ethernet/atheros/atl1c/atl1c.h | 1 +
drivers/net/ethernet/atheros/atl1c/atl1c_hw.c | 37 +++++++++++++++
drivers/net/ethernet/atheros/atl1c/atl1c_hw.h | 1 +
drivers/net/ethernet/atheros/atl1c/atl1c_main.c | 55 +++++++++++++++++++++++
4 files changed, 94 insertions(+), 0 deletions(-)

diff --git a/drivers/net/ethernet/atheros/atl1c/atl1c.h b/drivers/net/ethernet/atheros/atl1c/atl1c.h
index b5b76b9..b0527e8 100644
--- a/drivers/net/ethernet/atheros/atl1c/atl1c.h
+++ b/drivers/net/ethernet/atheros/atl1c/atl1c.h
@@ -436,6 +436,7 @@ struct atl1c_hw {
bool phy_configured;
bool re_autoneg;
bool emi_ca;
+ bool msi_lnkpatch; /* link patch for specific platforms */
};

/*
diff --git a/drivers/net/ethernet/atheros/atl1c/atl1c_hw.c b/drivers/net/ethernet/atheros/atl1c/atl1c_hw.c
index a077ab8..840150e 100644
--- a/drivers/net/ethernet/atheros/atl1c/atl1c_hw.c
+++ b/drivers/net/ethernet/atheros/atl1c/atl1c_hw.c
@@ -844,3 +844,40 @@ int atl1c_power_saving(struct atl1c_hw *hw, u32 wufc)

return 0;
}
+
+
+/* configure phy after Link change Event */
+void atl1c_post_phy_linkchg(struct atl1c_hw *hw, u16 link_speed)
+{
+ u16 phy_val;
+ bool adj_thresh = false;
+
+ if (hw->nic_type == athr_l2c_b || hw->nic_type == athr_l2c_b2 ||
+ hw->nic_type == athr_l1d || hw->nic_type == athr_l1d_2)
+ adj_thresh = true;
+
+ if (link_speed != SPEED_0) { /* link up */
+ /* az with brcm, half-amp */
+ if (hw->nic_type == athr_l1d_2) {
+ atl1c_read_phy_ext(hw, MIIEXT_PCS, MIIEXT_CLDCTRL6,
+ &phy_val);
+ phy_val = FIELD_GETX(phy_val, CLDCTRL6_CAB_LEN);
+ phy_val = phy_val > CLDCTRL6_CAB_LEN_SHORT ?
+ AZ_ANADECT_LONG : AZ_ANADECT_DEF;
+ atl1c_write_phy_dbg(hw, MIIDBG_AZ_ANADECT, phy_val);
+ }
+ /* threshold adjust */
+ if (adj_thresh && link_speed == SPEED_100 && hw->msi_lnkpatch) {
+ atl1c_write_phy_dbg(hw, MIIDBG_MSE16DB, L1D_MSE16DB_UP);
+ atl1c_write_phy_dbg(hw, MIIDBG_SYSMODCTRL,
+ L1D_SYSMODCTRL_IECHOADJ_DEF);
+ }
+ } else { /* link down */
+ if (adj_thresh && hw->msi_lnkpatch) {
+ atl1c_write_phy_dbg(hw, MIIDBG_SYSMODCTRL,
+ SYSMODCTRL_IECHOADJ_DEF);
+ atl1c_write_phy_dbg(hw, MIIDBG_MSE16DB,
+ L1D_MSE16DB_DOWN);
+ }
+ }
+}
diff --git a/drivers/net/ethernet/atheros/atl1c/atl1c_hw.h b/drivers/net/ethernet/atheros/atl1c/atl1c_hw.h
index 59817ca..47b0f3d 100644
--- a/drivers/net/ethernet/atheros/atl1c/atl1c_hw.h
+++ b/drivers/net/ethernet/atheros/atl1c/atl1c_hw.h
@@ -62,6 +62,7 @@ int atl1c_write_phy_ext(struct atl1c_hw *hw, u8 dev_addr,
u16 reg_addr, u16 phy_data);
int atl1c_read_phy_dbg(struct atl1c_hw *hw, u16 reg_addr, u16 *phy_data);
int atl1c_write_phy_dbg(struct atl1c_hw *hw, u16 reg_addr, u16 phy_data);
+void atl1c_post_phy_linkchg(struct atl1c_hw *hw, u16 link_speed);

/* hw-ids */
#define PCI_DEVICE_ID_ATTANSIC_L2C 0x1062
diff --git a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
index db60325..5b51099 100644
--- a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
+++ b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
@@ -252,6 +252,7 @@ static void atl1c_check_link_status(struct atl1c_adapter *adapter)
if (netif_msg_hw(adapter))
dev_warn(&pdev->dev, "stop mac failed\n");
atl1c_set_aspm(hw, SPEED_0);
+ atl1c_post_phy_linkchg(hw, SPEED_0);
netif_carrier_off(netdev);
netif_stop_queue(netdev);
} else {
@@ -268,6 +269,7 @@ static void atl1c_check_link_status(struct atl1c_adapter *adapter)
adapter->link_speed = speed;
adapter->link_duplex = duplex;
atl1c_set_aspm(hw, speed);
+ atl1c_post_phy_linkchg(hw, speed);
atl1c_start_mac(adapter);
if (netif_msg_link(adapter))
dev_info(&pdev->dev,
@@ -691,6 +693,57 @@ static int atl1c_setup_mac_funcs(struct atl1c_hw *hw)
hw->link_cap_flags |= ATL1C_LINK_CAP_1000M;
return 0;
}
+
+struct atl1c_platform_patch {
+ u16 pci_vid;
+ u16 pci_did;
+ u8 pci_revid;
+ u16 subsystem_vid;
+ u16 subsystem_did;
+ u32 patch_flag;
+#define ATL1C_LINK_PATCH 0x1
+};
+static struct atl1c_platform_patch plats[] = {
+{0x1969, 0x2060, 0xC1, 0x1019, 0x8152, 0x1},
+{0x1969, 0x2060, 0xC1, 0x1019, 0x2060, 0x1},
+{0x1969, 0x2060, 0xC1, 0x1019, 0xE000, 0x1},
+{0x1969, 0x2062, 0xC0, 0x1019, 0x8152, 0x1},
+{0x1969, 0x2062, 0xC0, 0x1019, 0x2062, 0x1},
+{0x1969, 0x2062, 0xC0, 0x1458, 0xE000, 0x1},
+{0x1969, 0x2062, 0xC1, 0x1019, 0x8152, 0x1},
+{0x1969, 0x2062, 0xC1, 0x1019, 0x2062, 0x1},
+{0x1969, 0x2062, 0xC1, 0x1458, 0xE000, 0x1},
+{0x1969, 0x2062, 0xC1, 0x1565, 0x2802, 0x1},
+{0x1969, 0x2062, 0xC1, 0x1565, 0x2801, 0x1},
+{0x1969, 0x1073, 0xC0, 0x1019, 0x8151, 0x1},
+{0x1969, 0x1073, 0xC0, 0x1019, 0x1073, 0x1},
+{0x1969, 0x1073, 0xC0, 0x1458, 0xE000, 0x1},
+{0x1969, 0x1083, 0xC0, 0x1458, 0xE000, 0x1},
+{0x1969, 0x1083, 0xC0, 0x1019, 0x8151, 0x1},
+{0x1969, 0x1083, 0xC0, 0x1019, 0x1083, 0x1},
+{0x1969, 0x1083, 0xC0, 0x1462, 0x7680, 0x1},
+{0x1969, 0x1083, 0xC0, 0x1565, 0x2803, 0x1},
+{0},
+};
+
+static void __devinit atl1c_patch_assign(struct atl1c_hw *hw)
+{
+ int i = 0;
+
+ hw->msi_lnkpatch = false;
+
+ while (plats[i].pci_vid != 0) {
+ if (plats[i].pci_vid == hw->vendor_id &&
+ plats[i].pci_did == hw->device_id &&
+ plats[i].pci_revid == hw->revision_id &&
+ plats[i].subsystem_vid == hw->subsystem_vendor_id &&
+ plats[i].subsystem_did == hw->subsystem_id) {
+ if (plats[i].patch_flag & ATL1C_LINK_PATCH)
+ hw->msi_lnkpatch = true;
+ }
+ i++;
+ }
+}
/*
* atl1c_sw_init - Initialize general software structures (struct atl1c_adapter)
* @adapter: board private structure to initialize
@@ -726,6 +779,8 @@ static int __devinit atl1c_sw_init(struct atl1c_adapter *adapter)
dev_err(&pdev->dev, "set mac function pointers failed\n");
return -1;
}
+ atl1c_patch_assign(hw);
+
hw->intr_mask = IMR_NORMAL_MASK;
hw->phy_configured = false;
hw->preamble_len = 7;
--
1.7.7


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