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Subject[PATCH 09/11] atl1c: refine atl1c_pcie_patch
Date
bit PCIE_PHYMISC_FORCE_RCV_DET is only for l1c&l2c to fix WoL issue,
other chips set bit5 of REG_MASTER_CTRL --- this way could save more
power than the former, and the bit should be kept all time.
l2cb 1.x has special setting for L0S/L1
l2cb 1.x & l1d 1.x should clear Vendor Message on some platforms,
otherwise it will cause the root complex hang.

Signed-off-by: xiong <xiong@qca.qualcomm.com>
Tested-by: Liu David <dwliu@qca.qualcomm.com>
---
drivers/net/ethernet/atheros/atl1c/atl1c_hw.h | 17 ++++++--
drivers/net/ethernet/atheros/atl1c/atl1c_main.c | 49 +++++++++++++++++------
2 files changed, 48 insertions(+), 18 deletions(-)
diff --git a/drivers/net/ethernet/atheros/atl1c/atl1c_hw.h b/drivers/net/ethernet/atheros/atl1c/atl1c_hw.h
index 5e49ea2..59051e7 100644
--- a/drivers/net/ethernet/atheros/atl1c/atl1c_hw.h
+++ b/drivers/net/ethernet/atheros/atl1c/atl1c_hw.h
@@ -96,17 +96,24 @@ int atl1c_phy_power_saving(struct atl1c_hw *hw);
#define PCIE_DEV_MISC_SERDES_SEL_DIN 0x10

#define REG_PCIE_PHYMISC 0x1000
-#define PCIE_PHYMISC_FORCE_RCV_DET 0x4
+#define PCIE_PHYMISC_FORCE_RCV_DET BIT(2)
+#define PCIE_PHYMISC_NFTS_MASK 0xFFUL
+#define PCIE_PHYMISC_NFTS_SHIFT 16

#define REG_PCIE_PHYMISC2 0x1004
-#define PCIE_PHYMISC2_SERDES_CDR_MASK 0x3
-#define PCIE_PHYMISC2_SERDES_CDR_SHIFT 16
-#define PCIE_PHYMISC2_SERDES_TH_MASK 0x3
-#define PCIE_PHYMISC2_SERDES_TH_SHIFT 18
+#define PCIE_PHYMISC2_L0S_TH_MASK 0x3UL
+#define PCIE_PHYMISC2_L0S_TH_SHIFT 18
+#define L2CB1_PCIE_PHYMISC2_L0S_TH 3
+#define PCIE_PHYMISC2_CDR_BW_MASK 0x3UL
+#define PCIE_PHYMISC2_CDR_BW_SHIFT 16
+#define L2CB1_PCIE_PHYMISC2_CDR_BW 3

#define REG_TWSI_DEBUG 0x1108
#define TWSI_DEBUG_DEV_EXIST 0x20000000

+#define REG_DMA_DBG 0x1114
+#define DMA_DBG_VENDOR_MSG BIT(0)
+
#define REG_EEPROM_CTRL 0x12C0
#define EEPROM_CTRL_DATA_HI_MASK 0xFFFF
#define EEPROM_CTRL_DATA_HI_SHIFT 0
diff --git a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
index 47fe6ad..17b91db 100644
--- a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
+++ b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
@@ -87,20 +87,37 @@ static void atl1c_pcie_patch(struct atl1c_hw *hw)
mst_data &= ~MASTER_CTRL_CLK_SEL_DIS;
AT_WRITE_REG(hw, REG_MASTER_CTRL, mst_data);

- AT_READ_REG(hw, REG_PCIE_PHYMISC, &data);
- data |= PCIE_PHYMISC_FORCE_RCV_DET;
- AT_WRITE_REG(hw, REG_PCIE_PHYMISC, data);
-
+ /* WoL/PCIE related settings */
+ if (hw->nic_type == athr_l1c || hw->nic_type == athr_l2c) {
+ AT_READ_REG(hw, REG_PCIE_PHYMISC, &data);
+ data |= PCIE_PHYMISC_FORCE_RCV_DET;
+ AT_WRITE_REG(hw, REG_PCIE_PHYMISC, data);
+ } else { /* new dev set bit5 of MASTER */
+ if (!(mst_data & MASTER_CTRL_WAKEN_25M))
+ AT_WRITE_REG(hw, REG_MASTER_CTRL,
+ mst_data | MASTER_CTRL_WAKEN_25M);
+ }
+ /* aspm/PCIE setting only for l2cb 1.0 */
if (hw->nic_type == athr_l2c_b && hw->revision_id == L2CB_V10) {
AT_READ_REG(hw, REG_PCIE_PHYMISC2, &data);
-
- data &= ~(PCIE_PHYMISC2_SERDES_CDR_MASK <<
- PCIE_PHYMISC2_SERDES_CDR_SHIFT);
- data |= 3 << PCIE_PHYMISC2_SERDES_CDR_SHIFT;
- data &= ~(PCIE_PHYMISC2_SERDES_TH_MASK <<
- PCIE_PHYMISC2_SERDES_TH_SHIFT);
- data |= 3 << PCIE_PHYMISC2_SERDES_TH_SHIFT;
+ data = FIELD_SETX(data, PCIE_PHYMISC2_CDR_BW,
+ L2CB1_PCIE_PHYMISC2_CDR_BW);
+ data = FIELD_SETX(data, PCIE_PHYMISC2_L0S_TH,
+ L2CB1_PCIE_PHYMISC2_L0S_TH);
AT_WRITE_REG(hw, REG_PCIE_PHYMISC2, data);
+ /* extend L1 sync timer */
+ AT_READ_REG(hw, REG_LINK_CTRL, &data);
+ data |= LINK_CTRL_EXT_SYNC;
+ AT_WRITE_REG(hw, REG_LINK_CTRL, data);
+ }
+ /* l2cb 1.x & l1d 1.x */
+ if (hw->nic_type == athr_l2c_b || hw->nic_type == athr_l1d) {
+ AT_READ_REG(hw, REG_PM_CTRL, &data);
+ data |= PM_CTRL_L0S_BUFSRX_EN;
+ AT_WRITE_REG(hw, REG_PM_CTRL, data);
+ /* clear vendor msg */
+ AT_READ_REG(hw, REG_DMA_DBG, &data);
+ AT_WRITE_REG(hw, REG_DMA_DBG, data & ~DMA_DBG_VENDOR_MSG);
}
}

@@ -1181,8 +1198,8 @@ static int atl1c_reset_mac(struct atl1c_hw *hw)
*/
AT_READ_REG(hw, REG_MASTER_CTRL, &master_ctrl_data);
master_ctrl_data |= MASTER_CTRL_OOB_DIS;
- AT_WRITE_REGW(hw, REG_MASTER_CTRL, ((master_ctrl_data | MASTER_CTRL_SOFT_RST)
- & 0xFFFF));
+ AT_WRITE_REG(hw, REG_MASTER_CTRL,
+ master_ctrl_data | MASTER_CTRL_SOFT_RST);

AT_WRITE_FLUSH(hw);
msleep(10);
@@ -1194,6 +1211,8 @@ static int atl1c_reset_mac(struct atl1c_hw *hw)
" disabled for 10ms second\n");
return -1;
}
+ AT_WRITE_REG(hw, REG_MASTER_CTRL, master_ctrl_data);
+
return 0;
}

@@ -1338,6 +1357,10 @@ static int atl1c_configure(struct atl1c_adapter *adapter)
u32 intr_modrt_data;
u32 data;

+ AT_READ_REG(hw, REG_MASTER_CTRL, &master_ctrl_data);
+ master_ctrl_data &= ~(MASTER_CTRL_TX_ITIMER_EN |
+ MASTER_CTRL_RX_ITIMER_EN |
+ MASTER_CTRL_INT_RDCLR);
/* clear interrupt status */
AT_WRITE_REG(hw, REG_ISR, 0xFFFFFFFF);
/* Clear any WOL status */
--
1.7.7


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