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Date:	Thu, 11 Feb 2010 19:33:32 -0500
From:	"Luis R. Rodriguez" <lrodriguez@...eros.com>
To:	davem@...emloft.net, netdev@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, espy@...onical.com,
	ken.wu@...eros.com, graham.richards@...eros.com,
	scott.tan@...eros.com, mcgrof@...il.com, chris.snook@...il.com,
	"Luis R. Rodriguez" <lrodriguez@...eros.com>
Subject: [PATCH] atl1c: Add support for Atheros AR8152 and AR8152

AR8151 is a Gigabit Ethernet device. AR8152 devices are
Fast Ethernet devices, there are two revisions, a 1.0
and a 2.0 revision.

This has been tested against these devices:

Driver	Model-name	vendor:device	Type
atl1c 	AR8131		1969:1063	Gigabit Ethernet
atl1c	AR8132		1969:1062	Fast Ethernet
atl1c	AR8151(v1.0)	1969:1073	Gigabit Ethernet
atl1c	AR8152(v1.1)	1969:2060	Fast Ethernet

This device has no hardware available yet so it goes untested,
but it should work:

atl1c	AR8152(v2.0)	1969:2062	Fast Ethernet

Signed-off-by: Luis R. Rodriguez <lrodriguez@...eros.com>
---

If you are a distribution looking to just suck this patch
into your tree you can wget this:

http://kernel.org/pub/linux/kernel/people/mcgrof/ethernet/AR8152-AR8152.patch

 drivers/net/atl1c/atl1c.h         |   11 +++-
 drivers/net/atl1c/atl1c_ethtool.c |    2 +-
 drivers/net/atl1c/atl1c_hw.c      |   83 +++++++++++++++++++++++----
 drivers/net/atl1c/atl1c_hw.h      |    5 ++
 drivers/net/atl1c/atl1c_main.c    |  115 +++++++++++++++++++++++++++++++++---
 5 files changed, 191 insertions(+), 25 deletions(-)

diff --git a/drivers/net/atl1c/atl1c.h b/drivers/net/atl1c/atl1c.h
index efe5435..84ae905 100644
--- a/drivers/net/atl1c/atl1c.h
+++ b/drivers/net/atl1c/atl1c.h
@@ -313,6 +313,9 @@ enum atl1c_rss_type {
 enum atl1c_nic_type {
 	athr_l1c = 0,
 	athr_l2c = 1,
+	athr_l2c_b,
+	athr_l2c_b2,
+	athr_l1d,
 };
 
 enum atl1c_trans_queue {
@@ -426,8 +429,12 @@ struct atl1c_hw {
 #define ATL1C_ASPM_L1_SUPPORT		0x0100
 #define ATL1C_ASPM_CTRL_MON		0x0200
 #define ATL1C_HIB_DISABLE		0x0400
-#define ATL1C_LINK_CAP_1000M		0x0800
-#define ATL1C_FPGA_VERSION		0x8000
+#define ATL1C_APS_MODE_ENABLE           0x0800
+#define ATL1C_LINK_EXT_SYNC             0x1000
+#define ATL1C_CLK_GATING_EN             0x2000
+#define ATL1C_FPGA_VERSION              0x8000
+	u16 link_cap_flags;
+#define ATL1C_LINK_CAP_1000M		0x0001
 	u16 cmb_tpd;
 	u16 cmb_rrd;
 	u16 cmb_rx_timer; /* 2us resolution */
diff --git a/drivers/net/atl1c/atl1c_ethtool.c b/drivers/net/atl1c/atl1c_ethtool.c
index 9b1e0ea..61a0f2f 100644
--- a/drivers/net/atl1c/atl1c_ethtool.c
+++ b/drivers/net/atl1c/atl1c_ethtool.c
@@ -37,7 +37,7 @@ static int atl1c_get_settings(struct net_device *netdev,
 			   SUPPORTED_100baseT_Full |
 			   SUPPORTED_Autoneg       |
 			   SUPPORTED_TP);
-	if (hw->ctrl_flags & ATL1C_LINK_CAP_1000M)
+	if (hw->link_cap_flags & ATL1C_LINK_CAP_1000M)
 		ecmd->supported |= SUPPORTED_1000baseT_Full;
 
 	ecmd->advertising = ADVERTISED_TP;
diff --git a/drivers/net/atl1c/atl1c_hw.c b/drivers/net/atl1c/atl1c_hw.c
index 3e69b94..f1389d6 100644
--- a/drivers/net/atl1c/atl1c_hw.c
+++ b/drivers/net/atl1c/atl1c_hw.c
@@ -70,17 +70,39 @@ static int atl1c_get_permanent_address(struct atl1c_hw *hw)
 	u32 otp_ctrl_data;
 	u32 twsi_ctrl_data;
 	u8  eth_addr[ETH_ALEN];
+	u16 phy_data;
+	bool raise_vol = false;
 
 	/* init */
 	addr[0] = addr[1] = 0;
 	AT_READ_REG(hw, REG_OTP_CTRL, &otp_ctrl_data);
 	if (atl1c_check_eeprom_exist(hw)) {
-		/* Enable OTP CLK */
-		if (!(otp_ctrl_data & OTP_CTRL_CLK_EN)) {
-			otp_ctrl_data |= OTP_CTRL_CLK_EN;
-			AT_WRITE_REG(hw, REG_OTP_CTRL, otp_ctrl_data);
-			AT_WRITE_FLUSH(hw);
-			msleep(1);
+		if (hw->nic_type == athr_l1c || hw->nic_type == athr_l2c_b) {
+			/* Enable OTP CLK */
+			if (!(otp_ctrl_data & OTP_CTRL_CLK_EN)) {
+				otp_ctrl_data |= OTP_CTRL_CLK_EN;
+				AT_WRITE_REG(hw, REG_OTP_CTRL, otp_ctrl_data);
+				AT_WRITE_FLUSH(hw);
+				msleep(1);
+			}
+		}
+
+		if (hw->nic_type == athr_l2c_b ||
+		    hw->nic_type == athr_l2c_b2 ||
+		    hw->nic_type == athr_l1d) {
+			atl1c_write_phy_reg(hw, MII_DBG_ADDR, 0x00);
+			if (atl1c_read_phy_reg(hw, MII_DBG_DATA, &phy_data))
+				goto out;
+			phy_data &= 0xFF7F;
+			atl1c_write_phy_reg(hw, MII_DBG_DATA, phy_data);
+
+			atl1c_write_phy_reg(hw, MII_DBG_ADDR, 0x3B);
+			if (atl1c_read_phy_reg(hw, MII_DBG_DATA, &phy_data))
+				goto out;
+			phy_data |= 0x8;
+			atl1c_write_phy_reg(hw, MII_DBG_DATA, phy_data);
+			udelay(20);
+			raise_vol = true;
 		}
 
 		AT_READ_REG(hw, REG_TWSI_CTRL, &twsi_ctrl_data);
@@ -96,11 +118,31 @@ static int atl1c_get_permanent_address(struct atl1c_hw *hw)
 			return -1;
 	}
 	/* Disable OTP_CLK */
-	if (otp_ctrl_data & OTP_CTRL_CLK_EN) {
-		otp_ctrl_data &= ~OTP_CTRL_CLK_EN;
-		AT_WRITE_REG(hw, REG_OTP_CTRL, otp_ctrl_data);
-		AT_WRITE_FLUSH(hw);
-		msleep(1);
+	if ((hw->nic_type == athr_l1c || hw->nic_type == athr_l2c)) {
+		if (otp_ctrl_data & OTP_CTRL_CLK_EN) {
+			otp_ctrl_data &= ~OTP_CTRL_CLK_EN;
+			AT_WRITE_REG(hw, REG_OTP_CTRL, otp_ctrl_data);
+			AT_WRITE_FLUSH(hw);
+			msleep(1);
+		}
+	}
+	if (raise_vol) {
+		if (hw->nic_type == athr_l2c_b ||
+		    hw->nic_type == athr_l2c_b2 ||
+		    hw->nic_type == athr_l1d) {
+			atl1c_write_phy_reg(hw, MII_DBG_ADDR, 0x00);
+			if (atl1c_read_phy_reg(hw, MII_DBG_DATA, &phy_data))
+				goto out;
+			phy_data |= 0x80;
+			atl1c_write_phy_reg(hw, MII_DBG_DATA, phy_data);
+
+			atl1c_write_phy_reg(hw, MII_DBG_ADDR, 0x3B);
+			if (atl1c_read_phy_reg(hw, MII_DBG_DATA, &phy_data))
+				goto out;
+			phy_data &= 0xFFF7;
+			atl1c_write_phy_reg(hw, MII_DBG_DATA, phy_data);
+			udelay(20);
+		}
 	}
 
 	/* maybe MAC-address is from BIOS */
@@ -114,6 +156,7 @@ static int atl1c_get_permanent_address(struct atl1c_hw *hw)
 		return 0;
 	}
 
+out:
 	return -1;
 }
 
@@ -307,7 +350,7 @@ static int atl1c_phy_setup_adv(struct atl1c_hw *hw)
 		mii_adv_data |= ADVERTISE_10HALF  | ADVERTISE_10FULL |
 				ADVERTISE_100HALF | ADVERTISE_100FULL;
 
-	if (hw->ctrl_flags & ATL1C_LINK_CAP_1000M) {
+	if (hw->link_cap_flags & ATL1C_LINK_CAP_1000M) {
 		if (hw->autoneg_advertised & ADVERTISED_1000baseT_Half)
 			mii_giga_ctrl_data |= ADVERTISE_1000HALF;
 		if (hw->autoneg_advertised & ADVERTISED_1000baseT_Full)
@@ -389,6 +432,7 @@ int atl1c_phy_reset(struct atl1c_hw *hw)
 {
 	struct atl1c_adapter *adapter = hw->adapter;
 	struct pci_dev *pdev = adapter->pdev;
+	u16 phy_data;
 	u32 phy_ctrl_data = GPHY_CTRL_DEFAULT;
 	u32 mii_ier_data = IER_LINK_UP | IER_LINK_DOWN;
 	int err;
@@ -404,6 +448,21 @@ int atl1c_phy_reset(struct atl1c_hw *hw)
 	AT_WRITE_FLUSH(hw);
 	msleep(10);
 
+	if (hw->nic_type == athr_l2c_b) {
+		atl1c_write_phy_reg(hw, MII_DBG_ADDR, 0x0A);
+		atl1c_read_phy_reg(hw, MII_DBG_DATA, &phy_data);
+		atl1c_write_phy_reg(hw, MII_DBG_DATA, phy_data & 0xDFFF);
+	}
+
+	if (hw->nic_type == athr_l2c_b ||
+	    hw->nic_type == athr_l2c_b2 ||
+	    hw->nic_type == athr_l1d) {
+		atl1c_write_phy_reg(hw, MII_DBG_ADDR, 0x3B);
+		atl1c_read_phy_reg(hw, MII_DBG_DATA, &phy_data);
+		atl1c_write_phy_reg(hw, MII_DBG_DATA, phy_data & 0xFFF7);
+		msleep(20);
+	}
+
 	/*Enable PHY LinkChange Interrupt */
 	err = atl1c_write_phy_reg(hw, MII_IER, mii_ier_data);
 	if (err) {
diff --git a/drivers/net/atl1c/atl1c_hw.h b/drivers/net/atl1c/atl1c_hw.h
index c2c738d..1eeb3ed 100644
--- a/drivers/net/atl1c/atl1c_hw.h
+++ b/drivers/net/atl1c/atl1c_hw.h
@@ -57,6 +57,7 @@ int atl1c_restart_autoneg(struct atl1c_hw *hw);
 #define REG_LINK_CTRL			0x68
 #define LINK_CTRL_L0S_EN		0x01
 #define LINK_CTRL_L1_EN			0x02
+#define LINK_CTRL_EXT_SYNC		0x80
 
 #define REG_VPD_CAP			0x6C
 #define VPD_CAP_ID_MASK                 0xff
@@ -156,6 +157,8 @@ int atl1c_restart_autoneg(struct atl1c_hw *hw);
 #define PM_CTRL_PM_REQ_TIMER_SHIFT	20
 #define PM_CTRL_LCKDET_TIMER_MASK	0x3F
 #define PM_CTRL_LCKDET_TIMER_SHIFT	24
+#define PM_CTRL_EN_BUFS_RX_L0S		0x10000000
+#define PM_CTRL_SA_DLY_EN		0x20000000
 #define PM_CTRL_MAC_ASPM_CHK		0x40000000
 #define PM_CTRL_HOTRST			0x80000000
 
@@ -314,6 +317,8 @@ int atl1c_restart_autoneg(struct atl1c_hw *hw);
 #define MAC_CTRL_BC_EN              	0x4000000
 #define MAC_CTRL_DBG                	0x8000000
 #define MAC_CTRL_SINGLE_PAUSE_EN	0x10000000
+#define MAC_CTRL_HASH_ALG_CRC32		0x20000000
+#define MAC_CTRL_SPEED_MODE_SW		0x40000000
 
 /* MAC IPG/IFG Control Register  */
 #define REG_MAC_IPG_IFG             	0x1484
diff --git a/drivers/net/atl1c/atl1c_main.c b/drivers/net/atl1c/atl1c_main.c
index 2f4be59..1fd2f3e 100644
--- a/drivers/net/atl1c/atl1c_main.c
+++ b/drivers/net/atl1c/atl1c_main.c
@@ -21,11 +21,18 @@
 
 #include "atl1c.h"
 
-#define ATL1C_DRV_VERSION "1.0.0.1-NAPI"
+#define ATL1C_DRV_VERSION "1.0.0.2-NAPI"
 char atl1c_driver_name[] = "atl1c";
 char atl1c_driver_version[] = ATL1C_DRV_VERSION;
 #define PCI_DEVICE_ID_ATTANSIC_L2C      0x1062
 #define PCI_DEVICE_ID_ATTANSIC_L1C      0x1063
+#define PCI_DEVICE_ID_ATHEROS_L2C_B	0x2060 /* AR8152 v1.1 Fast 10/100 */
+#define PCI_DEVICE_ID_ATHEROS_L2C_B2	0x2062 /* AR8152 v2.0 Fast 10/100 */
+#define PCI_DEVICE_ID_ATHEROS_L1D	0x1073 /* AR8151 v1.0 Gigabit 1000 */
+
+#define L2CB_V10			0xc0
+#define L2CB_V11			0xc1
+
 /*
  * atl1c_pci_tbl - PCI Device ID Table
  *
@@ -38,6 +45,9 @@ char atl1c_driver_version[] = ATL1C_DRV_VERSION;
 static struct pci_device_id atl1c_pci_tbl[] = {
 	{PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATTANSIC_L1C)},
 	{PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATTANSIC_L2C)},
+	{PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATHEROS_L2C_B)},
+	{PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATHEROS_L2C_B2)},
+	{PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATHEROS_L1D)},
 	/* required last entry */
 	{ 0 }
 };
@@ -593,11 +603,18 @@ static void atl1c_set_mac_type(struct atl1c_hw *hw)
 	case PCI_DEVICE_ID_ATTANSIC_L2C:
 		hw->nic_type = athr_l2c;
 		break;
-
 	case PCI_DEVICE_ID_ATTANSIC_L1C:
 		hw->nic_type = athr_l1c;
 		break;
-
+	case PCI_DEVICE_ID_ATHEROS_L2C_B:
+		hw->nic_type = athr_l2c_b;
+		break;
+	case PCI_DEVICE_ID_ATHEROS_L2C_B2:
+		hw->nic_type = athr_l2c_b2;
+		break;
+	case PCI_DEVICE_ID_ATHEROS_L1D:
+		hw->nic_type = athr_l1d;
+		break;
 	default:
 		break;
 	}
@@ -620,10 +637,13 @@ static int atl1c_setup_mac_funcs(struct atl1c_hw *hw)
 		hw->ctrl_flags |= ATL1C_ASPM_L0S_SUPPORT;
 	if (link_ctrl_data & LINK_CTRL_L1_EN)
 		hw->ctrl_flags |= ATL1C_ASPM_L1_SUPPORT;
+	if (link_ctrl_data & LINK_CTRL_EXT_SYNC)
+		hw->ctrl_flags |= ATL1C_LINK_EXT_SYNC;
 
-	if (hw->nic_type == athr_l1c) {
+	if (hw->nic_type == athr_l1c ||
+	    hw->nic_type == athr_l1d) {
 		hw->ctrl_flags |= ATL1C_ASPM_CTRL_MON;
-		hw->ctrl_flags |= ATL1C_LINK_CAP_1000M;
+		hw->link_cap_flags |= ATL1C_LINK_CAP_1000M;
 	}
 	return 0;
 }
@@ -1234,21 +1254,92 @@ static void atl1c_disable_l0s_l1(struct atl1c_hw *hw)
 static void atl1c_set_aspm(struct atl1c_hw *hw, bool linkup)
 {
 	u32 pm_ctrl_data;
+	u32 link_ctrl_data;
 
 	AT_READ_REG(hw, REG_PM_CTRL, &pm_ctrl_data);
-
+	AT_READ_REG(hw, REG_LINK_CTRL, &link_ctrl_data);
 	pm_ctrl_data &= ~PM_CTRL_SERDES_PD_EX_L1;
+
 	pm_ctrl_data &=  ~(PM_CTRL_L1_ENTRY_TIMER_MASK <<
 			PM_CTRL_L1_ENTRY_TIMER_SHIFT);
+	pm_ctrl_data &= ~(PM_CTRL_LCKDET_TIMER_MASK <<
+			  PM_CTRL_LCKDET_TIMER_SHIFT);
 
 	pm_ctrl_data |= PM_CTRL_MAC_ASPM_CHK;
+	pm_ctrl_data &= ~PM_CTRL_ASPM_L1_EN;
+	pm_ctrl_data |= PM_CTRL_RBER_EN;
+	pm_ctrl_data |= PM_CTRL_SDES_EN;
+
+	if (hw->nic_type == athr_l2c_b ||
+	    hw->nic_type == athr_l1d ||
+	    hw->nic_type == athr_l2c_b2) {
+		link_ctrl_data &= ~LINK_CTRL_EXT_SYNC;
+		if (!(hw->ctrl_flags & ATL1C_APS_MODE_ENABLE)) {
+			if (hw->nic_type == athr_l2c_b &&
+			    hw->revision_id == L2CB_V10)
+				link_ctrl_data |= LINK_CTRL_EXT_SYNC;
+		}
+
+		AT_WRITE_REG(hw, REG_LINK_CTRL, link_ctrl_data);
+
+		pm_ctrl_data |= PM_CTRL_PCIE_RECV;
+		pm_ctrl_data |= AT_ASPM_L1_TIMER << PM_CTRL_PM_REQ_TIMER_SHIFT;
+		pm_ctrl_data &= ~PM_CTRL_EN_BUFS_RX_L0S;
+		pm_ctrl_data &= ~PM_CTRL_SA_DLY_EN;
+		pm_ctrl_data &= ~PM_CTRL_HOTRST;
+		pm_ctrl_data |= 1 << PM_CTRL_L1_ENTRY_TIMER_SHIFT;
+		pm_ctrl_data |= PM_CTRL_SERDES_PD_EX_L1;
+	}
 
 	if (linkup) {
-		pm_ctrl_data |= PM_CTRL_SERDES_PLL_L1_EN;
-		pm_ctrl_data &= ~PM_CTRL_CLK_SWH_L1;
+		pm_ctrl_data &= ~PM_CTRL_ASPM_L1_EN;
+		pm_ctrl_data &= ~PM_CTRL_ASPM_L0S_EN;
+		if (hw->ctrl_flags & ATL1C_ASPM_L1_SUPPORT)
+			pm_ctrl_data |= PM_CTRL_ASPM_L1_EN;
+		if (hw->ctrl_flags & ATL1C_ASPM_L0S_SUPPORT)
+			pm_ctrl_data |= PM_CTRL_ASPM_L0S_EN;
+
+		if (hw->nic_type == athr_l2c_b ||
+		    hw->nic_type == athr_l1d ||
+		    hw->nic_type == athr_l2c_b2) {
+			if (hw->nic_type == athr_l2c_b)
+				if (!(hw->ctrl_flags & ATL1C_APS_MODE_ENABLE))
+					pm_ctrl_data &= PM_CTRL_ASPM_L0S_EN;
+			pm_ctrl_data &= ~PM_CTRL_SERDES_L1_EN;
+			pm_ctrl_data &= ~PM_CTRL_SERDES_PLL_L1_EN;
+			pm_ctrl_data &= ~PM_CTRL_SERDES_BUDS_RX_L1_EN;
+			pm_ctrl_data |= PM_CTRL_CLK_SWH_L1;
+			if (hw->adapter->link_speed == SPEED_100 ||
+			    hw->adapter->link_speed == SPEED_1000) {
+				pm_ctrl_data &=
+					~(PM_CTRL_L1_ENTRY_TIMER_MASK <<
+					  PM_CTRL_L1_ENTRY_TIMER_SHIFT);
+				if (hw->nic_type == athr_l1d)
+					pm_ctrl_data |= 0xF <<
+						PM_CTRL_L1_ENTRY_TIMER_SHIFT;
+				else
+					pm_ctrl_data |= 7 <<
+						PM_CTRL_L1_ENTRY_TIMER_SHIFT;
+			}
+		} else {
+			pm_ctrl_data |= PM_CTRL_SERDES_L1_EN;
+			pm_ctrl_data |= PM_CTRL_SERDES_PLL_L1_EN;
+			pm_ctrl_data |= PM_CTRL_SERDES_BUDS_RX_L1_EN;
+			pm_ctrl_data &= ~PM_CTRL_CLK_SWH_L1;
+			pm_ctrl_data &= ~PM_CTRL_ASPM_L0S_EN;
+			pm_ctrl_data &= ~PM_CTRL_ASPM_L1_EN;
+		}
+		atl1c_write_phy_reg(hw, MII_DBG_ADDR, 0x29);
+		if (hw->adapter->link_speed == SPEED_10)
+			if (hw->nic_type == athr_l1d)
+				atl1c_write_phy_reg(hw, MII_DBG_ADDR, 0xB69D);
+			else
+				atl1c_write_phy_reg(hw, MII_DBG_DATA, 0xB6DD);
+		else if (hw->adapter->link_speed == SPEED_100)
+			atl1c_write_phy_reg(hw, MII_DBG_DATA, 0xB2DD);
+		else
+			atl1c_write_phy_reg(hw, MII_DBG_DATA, 0x96DD);
 
-		pm_ctrl_data |= PM_CTRL_SERDES_BUDS_RX_L1_EN;
-		pm_ctrl_data |= PM_CTRL_SERDES_L1_EN;
 	} else {
 		pm_ctrl_data &= ~PM_CTRL_SERDES_BUDS_RX_L1_EN;
 		pm_ctrl_data &= ~PM_CTRL_SERDES_L1_EN;
@@ -1302,6 +1393,10 @@ static void atl1c_setup_mac_ctrl(struct atl1c_adapter *adapter)
 		mac_ctrl_data |= MAC_CTRL_MC_ALL_EN;
 
 	mac_ctrl_data |= MAC_CTRL_SINGLE_PAUSE_EN;
+	if (hw->nic_type == athr_l1d || hw->nic_type == athr_l2c_b2) {
+		mac_ctrl_data |= MAC_CTRL_SPEED_MODE_SW;
+		mac_ctrl_data |= MAC_CTRL_HASH_ALG_CRC32;
+	}
 	AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl_data);
 }
 
-- 
1.6.3.3

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