qla3xxx: Adding support for the Agere PHY (ET1011C)

This PHY support patch was written by Benjamin Li.
Signed-off-by: Benjamin Li <benjamin.li@qlogic.com>
Signed-off-by: Ron Mercer <ron.mercer@qlogic.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 304 insertions, 43 deletions

diff --git a/drivers/net/qla3xxx.c b/drivers/net/qla3xxx.c
index c2eb2c93803b..4061f7de48af 100755
--- a/drivers/net/qla3xxx.c
+++ b/drivers/net/qla3xxx.c
@@ -72,6 +72,30 @@ static struct pci_device_id ql3xxx_pci_tbl[] __devinitdata = {
 MODULE_DEVICE_TABLE(pci, ql3xxx_pci_tbl);
 
 /*
+ *  These are the known PHY's which are used
+ */
+typedef enum {
+   PHY_TYPE_UNKNOWN   = 0,
+   PHY_VITESSE_VSC8211,
+   PHY_AGERE_ET1011C,
+   MAX_PHY_DEV_TYPES
+} PHY_DEVICE_et;
+
+typedef struct {
+        PHY_DEVICE_et phyDevice; 
+        u32             phyIdOUI;
+        u16             phyIdModel;
+        char            *name;
+} PHY_DEVICE_INFO_t;
+
+const PHY_DEVICE_INFO_t PHY_DEVICES[] =
+        {{PHY_TYPE_UNKNOWN,    0x000000, 0x0, "PHY_TYPE_UNKNOWN"},
+         {PHY_VITESSE_VSC8211, 0x0003f1, 0xb, "PHY_VITESSE_VSC8211"},
+         {PHY_AGERE_ET1011C,   0x00a0bc, 0x1, "PHY_AGERE_ET1011C"},
+};
+
+
+/*
  * Caller must take hw_lock.
  */
 static int ql_sem_spinlock(struct ql3_adapter *qdev,
@@ -662,7 +686,7 @@ static u8 ql_mii_disable_scan_mode(struct ql3_adapter *qdev)
 }
 
 static int ql_mii_write_reg_ex(struct ql3_adapter *qdev,
-                               u16 regAddr, u16 value, u32 mac_index)
+                               u16 regAddr, u16 value, u32 phyAddr)
 {
         struct ql3xxx_port_registers __iomem *port_regs =
                         qdev->mem_map_registers;
@@ -680,7 +704,7 @@ static int ql_mii_write_reg_ex(struct ql3_adapter *qdev,
         }
 
         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtAddrReg,
-                           PHYAddr[mac_index] | regAddr);
+                           phyAddr | regAddr);
 
         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtDataReg, value);
 
@@ -701,7 +725,7 @@ static int ql_mii_write_reg_ex(struct ql3_adapter *qdev,
 }
 
 static int ql_mii_read_reg_ex(struct ql3_adapter *qdev, u16 regAddr,
-                              u16 * value, u32 mac_index)
+                              u16 * value, u32 phyAddr)
 {
         struct ql3xxx_port_registers __iomem *port_regs =
                         qdev->mem_map_registers;
@@ -720,7 +744,7 @@ static int ql_mii_read_reg_ex(struct ql3_adapter *qdev, u16 regAddr,
         }
 
         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtAddrReg,
-                           PHYAddr[mac_index] | regAddr);
+                           phyAddr | regAddr);
 
         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtControlReg,
                            (MAC_MII_CONTROL_RC << 16));
@@ -850,28 +874,31 @@ static void ql_petbi_start_neg(struct ql3_adapter *qdev)
 
 }
 
-static void ql_petbi_reset_ex(struct ql3_adapter *qdev, u32 mac_index)
+static void ql_petbi_reset_ex(struct ql3_adapter *qdev)
 {
         ql_mii_write_reg_ex(qdev, PETBI_CONTROL_REG, PETBI_CTRL_SOFT_RESET,
-                            mac_index);
+                            PHYAddr[qdev->mac_index]);
 }
 
-static void ql_petbi_start_neg_ex(struct ql3_adapter *qdev, u32 mac_index)
+static void ql_petbi_start_neg_ex(struct ql3_adapter *qdev)
 {
         u16 reg;
 
         /* Enable Auto-negotiation sense */
-        ql_mii_read_reg_ex(qdev, PETBI_TBI_CTRL, &reg, mac_index);
+        ql_mii_read_reg_ex(qdev, PETBI_TBI_CTRL, &reg, 
+                           PHYAddr[qdev->mac_index]);
         reg |= PETBI_TBI_AUTO_SENSE;
-        ql_mii_write_reg_ex(qdev, PETBI_TBI_CTRL, reg, mac_index);
+        ql_mii_write_reg_ex(qdev, PETBI_TBI_CTRL, reg, 
+                            PHYAddr[qdev->mac_index]);
 
         ql_mii_write_reg_ex(qdev, PETBI_NEG_ADVER,
-                            PETBI_NEG_PAUSE | PETBI_NEG_DUPLEX, mac_index);
+                            PETBI_NEG_PAUSE | PETBI_NEG_DUPLEX, 
+                            PHYAddr[qdev->mac_index]);
 
         ql_mii_write_reg_ex(qdev, PETBI_CONTROL_REG,
                             PETBI_CTRL_AUTO_NEG | PETBI_CTRL_RESTART_NEG |
                             PETBI_CTRL_FULL_DUPLEX | PETBI_CTRL_SPEED_1000,
-                            mac_index);
+                            PHYAddr[qdev->mac_index]);
 }
 
 static void ql_petbi_init(struct ql3_adapter *qdev)
@@ -880,10 +907,10 @@ static void ql_petbi_init(struct ql3_adapter *qdev)
         ql_petbi_start_neg(qdev);
 }
 
-static void ql_petbi_init_ex(struct ql3_adapter *qdev, u32 mac_index)
+static void ql_petbi_init_ex(struct ql3_adapter *qdev)
 {
-        ql_petbi_reset_ex(qdev, mac_index);
-        ql_petbi_start_neg_ex(qdev, mac_index);
+        ql_petbi_reset_ex(qdev);
+        ql_petbi_start_neg_ex(qdev);
 }
 
 static int ql_is_petbi_neg_pause(struct ql3_adapter *qdev)
@@ -896,33 +923,128 @@ static int ql_is_petbi_neg_pause(struct ql3_adapter *qdev)
         return (reg & PETBI_NEG_PAUSE_MASK) == PETBI_NEG_PAUSE;
 }
 
+static void phyAgereSpecificInit(struct ql3_adapter *qdev, u32 miiAddr)
+{
+        printk(KERN_INFO "%s: enabling Agere specific PHY\n", qdev->ndev->name);
+        /* power down device bit 11 = 1 */
+        ql_mii_write_reg_ex(qdev, 0x00, 0x1940, miiAddr);
+        /* enable diagnostic mode bit 2 = 1 */
+        ql_mii_write_reg_ex(qdev, 0x12, 0x840e, miiAddr);
+        /* 1000MB amplitude adjust (see Agere errata) */
+        ql_mii_write_reg_ex(qdev, 0x10, 0x8805, miiAddr);
+        /* 1000MB amplitude adjust (see Agere errata) */
+        ql_mii_write_reg_ex(qdev, 0x11, 0xf03e, miiAddr);
+        /* 100MB amplitude adjust (see Agere errata) */
+        ql_mii_write_reg_ex(qdev, 0x10, 0x8806, miiAddr);
+        /* 100MB amplitude adjust (see Agere errata) */
+        ql_mii_write_reg_ex(qdev, 0x11, 0x003e, miiAddr);
+        /* 10MB amplitude adjust (see Agere errata) */
+        ql_mii_write_reg_ex(qdev, 0x10, 0x8807, miiAddr);
+        /* 10MB amplitude adjust (see Agere errata) */
+        ql_mii_write_reg_ex(qdev, 0x11, 0x1f00, miiAddr);
+        /* point to hidden reg 0x2806 */
+        ql_mii_write_reg_ex(qdev, 0x10, 0x2806, miiAddr);
+        /* Write new PHYAD w/bit 5 set */
+        ql_mii_write_reg_ex(qdev, 0x11, 0x0020 | (PHYAddr[qdev->mac_index] >> 8), miiAddr);
+        /* 
+         * Disable diagnostic mode bit 2 = 0
+         * Power up device bit 11 = 0
+         * Link up (on) and activity (blink)
+         */
+        ql_mii_write_reg(qdev, 0x12, 0x840a);
+        ql_mii_write_reg(qdev, 0x00, 0x1140);
+        ql_mii_write_reg(qdev, 0x1c, 0xfaf0);
+}
+
+static PHY_DEVICE_et getPhyType (struct ql3_adapter *qdev, 
+                                 u16 phyIdReg0, u16 phyIdReg1)
+{
+        PHY_DEVICE_et result = PHY_TYPE_UNKNOWN;
+        u32   oui;     
+        u16   model;
+        int i;   
+
+        if (phyIdReg0 == 0xffff) {
+                return result;
+        }
+   
+        if (phyIdReg1 == 0xffff) {
+                return result;
+        }
+
+        /* oui is split between two registers */
+        oui = (phyIdReg0 << 6) | ((phyIdReg1 & PHY_OUI_1_MASK) >> 10);
+
+        model = (phyIdReg1 & PHY_MODEL_MASK) >> 4;
+
+        /* Scan table for this PHY */
+        for(i = 0; i < MAX_PHY_DEV_TYPES; i++) {
+                if ((oui == PHY_DEVICES[i].phyIdOUI) && (model == PHY_DEVICES[i].phyIdModel))
+                {
+                        result = PHY_DEVICES[i].phyDevice;
+
+                        printk(KERN_INFO "%s: Phy: %s\n",
+                                qdev->ndev->name, PHY_DEVICES[i].name);
+                        
+                        break;
+                }
+        }
+
+        return result;
+}
+
 static int ql_phy_get_speed(struct ql3_adapter *qdev)
 {
         u16 reg;
 
+        switch(qdev->phyType) {
+        case PHY_AGERE_ET1011C:
+        {
+                if (ql_mii_read_reg(qdev, 0x1A, &reg) < 0)
+                        return 0;
+
+                reg = (reg >> 8) & 3;
+                break;
+        }
+        default:
         if (ql_mii_read_reg(qdev, AUX_CONTROL_STATUS, &reg) < 0)
                 return 0;
 
         reg = (((reg & 0x18) >> 3) & 3);
+        }
 
-        if (reg == 2)
+        switch(reg) {
+                case 2:
                 return SPEED_1000;
-        else if (reg == 1)
+                case 1:
                 return SPEED_100;
-        else if (reg == 0)
+                case 0:
                 return SPEED_10;
-        else
+                default:
                 return -1;
+        }
 }
 
 static int ql_is_full_dup(struct ql3_adapter *qdev)
 {
         u16 reg;
 
-        if (ql_mii_read_reg(qdev, AUX_CONTROL_STATUS, &reg) < 0)
-                return 0;
-
-        return (reg & PHY_AUX_DUPLEX_STAT) != 0;
+        switch(qdev->phyType) {
+        case PHY_AGERE_ET1011C:
+        {
+                if (ql_mii_read_reg(qdev, 0x1A, &reg))
+                        return 0;
+                        
+                return ((reg & 0x0080) && (reg & 0x1000)) != 0;
+        }
+        case PHY_VITESSE_VSC8211:
+        default:
+        {
+                if (ql_mii_read_reg(qdev, AUX_CONTROL_STATUS, &reg) < 0)
+                        return 0;
+                return (reg & PHY_AUX_DUPLEX_STAT) != 0;
+        }
+        }
 }
 
 static int ql_is_phy_neg_pause(struct ql3_adapter *qdev)
@@ -935,6 +1057,73 @@ static int ql_is_phy_neg_pause(struct ql3_adapter *qdev)
         return (reg & PHY_NEG_PAUSE) != 0;
 }
 
+static int PHY_Setup(struct ql3_adapter *qdev)
+{
+        u16   reg1;
+        u16   reg2;
+        bool  agereAddrChangeNeeded = false;
+        u32 miiAddr = 0;
+        int err;
+
+        /*  Determine the PHY we are using by reading the ID's */
+        err = ql_mii_read_reg(qdev, PHY_ID_0_REG, &reg1);
+        if(err != 0) {
+                printk(KERN_ERR "%s: Could not read from reg PHY_ID_0_REG\n",
+                       qdev->ndev->name);
+                return err;
+        }
+
+        err = ql_mii_read_reg(qdev, PHY_ID_1_REG, &reg2);
+        if(err != 0) {
+                printk(KERN_ERR "%s: Could not read from reg PHY_ID_0_REG\n",
+                       qdev->ndev->name);
+                return err;
+        }
+
+        /*  Check if we have a Agere PHY */
+        if ((reg1 == 0xffff) || (reg2 == 0xffff)) {
+
+                /* Determine which MII address we should be using 
+                   determined by the index of the card */
+                if (qdev->mac_index == 0) {
+                        miiAddr = MII_AGERE_ADDR_1;
+                } else {
+                        miiAddr = MII_AGERE_ADDR_2;
+                }
+      
+                err =ql_mii_read_reg_ex(qdev, PHY_ID_0_REG, &reg1, miiAddr);
+                if(err != 0) {
+                        printk(KERN_ERR "%s: Could not read from reg PHY_ID_0_REG after Agere detected\n",
+                               qdev->ndev->name);
+                        return err; 
+                }
+
+                err = ql_mii_read_reg_ex(qdev, PHY_ID_1_REG, &reg2, miiAddr);
+                if(err != 0) {
+                        printk(KERN_ERR "%s: Could not read from reg PHY_ID_0_REG after Agere detected\n",
+                               qdev->ndev->name);
+                        return err;
+                }
+   
+                /*  We need to remember to initialize the Agere PHY */
+                agereAddrChangeNeeded = true; 
+        }
+
+        /*  Determine the particular PHY we have on board to apply
+            PHY specific initializations */
+        qdev->phyType = getPhyType(qdev, reg1, reg2);
+
+        if ((qdev->phyType == PHY_AGERE_ET1011C) && agereAddrChangeNeeded) {
+                /* need this here so address gets changed */
+                phyAgereSpecificInit(qdev, miiAddr);  
+        } else if (qdev->phyType == PHY_TYPE_UNKNOWN) {
+                printk(KERN_ERR "%s: PHY is unknown\n", qdev->ndev->name);
+                return -EIO;
+        }
+
+        return 0;
+}
+
 /*
  * Caller holds hw_lock.
  */
@@ -1205,15 +1394,14 @@ static int ql_link_down_detect_clear(struct ql3_adapter *qdev)
 /*
  * Caller holds hw_lock.
  */
-static int ql_this_adapter_controls_port(struct ql3_adapter *qdev,
-                                         u32 mac_index)
+static int ql_this_adapter_controls_port(struct ql3_adapter *qdev)
 {
         struct ql3xxx_port_registers __iomem *port_regs =
                         qdev->mem_map_registers;
         u32 bitToCheck = 0;
         u32 temp;
 
-        switch (mac_index) {
+        switch (qdev->mac_index) {
         case 0:
                 bitToCheck = PORT_STATUS_F1_ENABLED;
                 break;
@@ -1238,27 +1426,96 @@ static int ql_this_adapter_controls_port(struct ql3_adapter *qdev,
         }
 }
 
-static void ql_phy_reset_ex(struct ql3_adapter *qdev, u32 mac_index)
+static void ql_phy_reset_ex(struct ql3_adapter *qdev)
 {
-        ql_mii_write_reg_ex(qdev, CONTROL_REG, PHY_CTRL_SOFT_RESET, mac_index);
+        ql_mii_write_reg_ex(qdev, CONTROL_REG, PHY_CTRL_SOFT_RESET, 
+                            PHYAddr[qdev->mac_index]);
 }
 
-static void ql_phy_start_neg_ex(struct ql3_adapter *qdev, u32 mac_index)
+static void ql_phy_start_neg_ex(struct ql3_adapter *qdev)
 {
         u16 reg;
+        u16 portConfiguration;
 
-        ql_mii_write_reg_ex(qdev, PHY_NEG_ADVER,
-                            PHY_NEG_PAUSE | PHY_NEG_ADV_SPEED | 1, mac_index);
+        if(qdev->phyType == PHY_AGERE_ET1011C) {
+                /* turn off external loopback */
+                ql_mii_write_reg(qdev, 0x13, 0x0000); 
+        }
+
+        if(qdev->mac_index == 0)
+                portConfiguration = qdev->nvram_data.macCfg_port0.portConfiguration;
+        else
+                portConfiguration = qdev->nvram_data.macCfg_port1.portConfiguration;
+
+        /*  Some HBA's in the field are set to 0 and they need to
+            be reinterpreted with a default value */
+        if(portConfiguration == 0)
+                portConfiguration = PORT_CONFIG_DEFAULT;
+
+        /* Set the 1000 advertisements */
+        ql_mii_read_reg_ex(qdev, PHY_GIG_CONTROL, &reg, 
+                           PHYAddr[qdev->mac_index]);
+        reg &= ~PHY_GIG_ALL_PARAMS;
+
+        if(portConfiguration & 
+           PORT_CONFIG_FULL_DUPLEX_ENABLED &
+           PORT_CONFIG_1000MB_SPEED) {
+                reg |= PHY_GIG_ADV_1000F;
+        }
+         
+        if(portConfiguration & 
+           PORT_CONFIG_HALF_DUPLEX_ENABLED &
+           PORT_CONFIG_1000MB_SPEED) {
+                reg |= PHY_GIG_ADV_1000H;
+        }
+
+        ql_mii_write_reg_ex(qdev, PHY_GIG_CONTROL, reg, 
+                            PHYAddr[qdev->mac_index]);
+
+        /* Set the 10/100 & pause negotiation advertisements */
+        ql_mii_read_reg_ex(qdev, PHY_NEG_ADVER, &reg,
+                           PHYAddr[qdev->mac_index]);
+        reg &= ~PHY_NEG_ALL_PARAMS;
+
+        if(portConfiguration & PORT_CONFIG_SYM_PAUSE_ENABLED)
+                reg |= PHY_NEG_ASY_PAUSE | PHY_NEG_SYM_PAUSE;
+
+        if(portConfiguration & PORT_CONFIG_FULL_DUPLEX_ENABLED) {
+                if(portConfiguration & PORT_CONFIG_100MB_SPEED)
+                        reg |= PHY_NEG_ADV_100F;
+                
+                if(portConfiguration & PORT_CONFIG_10MB_SPEED)
+                        reg |= PHY_NEG_ADV_10F;
+        }
 
-        ql_mii_read_reg_ex(qdev, CONTROL_REG, &reg, mac_index);
-        ql_mii_write_reg_ex(qdev, CONTROL_REG, reg | PHY_CTRL_RESTART_NEG,
-                            mac_index);
+        if(portConfiguration & PORT_CONFIG_HALF_DUPLEX_ENABLED) {
+                if(portConfiguration & PORT_CONFIG_100MB_SPEED)
+                        reg |= PHY_NEG_ADV_100H;
+                
+                if(portConfiguration & PORT_CONFIG_10MB_SPEED)
+                        reg |= PHY_NEG_ADV_10H;
+        }
+
+        if(portConfiguration &
+           PORT_CONFIG_1000MB_SPEED) {
+                reg |= 1;       
+        }
+
+        ql_mii_write_reg_ex(qdev, PHY_NEG_ADVER, reg, 
+                            PHYAddr[qdev->mac_index]);
+
+        ql_mii_read_reg_ex(qdev, CONTROL_REG, &reg, PHYAddr[qdev->mac_index]);
+        
+        ql_mii_write_reg_ex(qdev, CONTROL_REG, 
+                            reg | PHY_CTRL_RESTART_NEG | PHY_CTRL_AUTO_NEG,
+                            PHYAddr[qdev->mac_index]);
 }
 
-static void ql_phy_init_ex(struct ql3_adapter *qdev, u32 mac_index)
+static void ql_phy_init_ex(struct ql3_adapter *qdev)
 {
-        ql_phy_reset_ex(qdev, mac_index);
-        ql_phy_start_neg_ex(qdev, mac_index);
+        ql_phy_reset_ex(qdev);
+        PHY_Setup(qdev);
+        ql_phy_start_neg_ex(qdev);
 }
 
 /*
@@ -1295,14 +1552,17 @@ static int ql_port_start(struct ql3_adapter *qdev)
 {
         if(ql_sem_spinlock(qdev, QL_PHY_GIO_SEM_MASK,
                 (QL_RESOURCE_BITS_BASE_CODE | (qdev->mac_index) *
-                         2) << 7))
+                         2) << 7)) {
+                printk(KERN_ERR "%s: Could not get hw lock for GIO\n",
+                       qdev->ndev->name);
                 return -1;
+        }
 
         if (ql_is_fiber(qdev)) {
                 ql_petbi_init(qdev);
         } else {
                 /* Copper port */
-                ql_phy_init_ex(qdev, qdev->mac_index);
+                ql_phy_init_ex(qdev);
         }
 
         ql_sem_unlock(qdev, QL_PHY_GIO_SEM_MASK);
@@ -1453,7 +1713,7 @@ static void ql_link_state_machine(struct ql3_adapter *qdev)
  */
 static void ql_get_phy_owner(struct ql3_adapter *qdev)
 {
-        if (ql_this_adapter_controls_port(qdev, qdev->mac_index))
+        if (ql_this_adapter_controls_port(qdev))
                 set_bit(QL_LINK_MASTER,&qdev->flags);
         else
                 clear_bit(QL_LINK_MASTER,&qdev->flags);
@@ -1467,11 +1727,11 @@ static void ql_init_scan_mode(struct ql3_adapter *qdev)
         ql_mii_enable_scan_mode(qdev);
 
         if (test_bit(QL_LINK_OPTICAL,&qdev->flags)) {
-                if (ql_this_adapter_controls_port(qdev, qdev->mac_index))
-                        ql_petbi_init_ex(qdev, qdev->mac_index);
+                if (ql_this_adapter_controls_port(qdev))
+                        ql_petbi_init_ex(qdev);
         } else {
-                if (ql_this_adapter_controls_port(qdev, qdev->mac_index))
-                        ql_phy_init_ex(qdev, qdev->mac_index);
+                if (ql_this_adapter_controls_port(qdev))
+                        ql_phy_init_ex(qdev);
         }
 }
 
@@ -3092,6 +3352,7 @@ static int ql_adapter_initialize(struct ql3_adapter *qdev)
                 goto out;
         }
 
+        PHY_Setup(qdev);
         ql_init_scan_mode(qdev);
         ql_get_phy_owner(qdev);