1 files changed, 212 insertions, 24 deletions

diff --git a/drivers/net/pcnet32.c b/drivers/net/pcnet32.c
index 7e900572eaf..1bc3f5bffb9 100644
--- a/drivers/net/pcnet32.c
+++ b/drivers/net/pcnet32.c
@@ -22,8 +22,8 @@
  *************************************************************************/
 
 #define DRV_NAME        "pcnet32"
-#define DRV_VERSION     "1.31c"
-#define DRV_RELDATE     "01.Nov.2005"
+#define DRV_VERSION     "1.32"
+#define DRV_RELDATE     "18.Mar.2006"
 #define PFX             DRV_NAME ": "
 
 static const char * const version =
@@ -133,7 +133,7 @@ static const char pcnet32_gstrings_test[][ETH_GSTRING_LEN] = {
 };
 #define PCNET32_TEST_LEN (sizeof(pcnet32_gstrings_test) / ETH_GSTRING_LEN)
 
-#define PCNET32_NUM_REGS 168
+#define PCNET32_NUM_REGS 136
 
 #define MAX_UNITS 8     /* More are supported, limit only on options */
 static int options[MAX_UNITS];
@@ -265,6 +265,9 @@ static int homepna[MAX_UNITS];
  * v1.31c  01 Nov 2005 Don Fry Allied Telesyn 2700/2701 FX are 100Mbit only.
  *         Force 100Mbit FD if Auto (ASEL) is selected.
  *         See Bugzilla 2669 and 4551.
+ * v1.32   18 Mar2006 Thomas Bogendoerfer and Don Fry added Multi-Phy
+ *         handling for supporting AT-270x FTX cards with FX and Tx PHYs.
+ *         Philippe Seewer assisted with auto negotiation and testing.
  */
 
 
@@ -375,6 +378,7 @@ struct pcnet32_private {
     unsigned int        dirty_rx, dirty_tx; /* The ring entries to be free()ed. */
     struct net_device_stats stats;
     char                tx_full;
+    char                phycount;       /* number of phys found */
     int                 options;
     unsigned int        shared_irq:1,   /* shared irq possible */
                         dxsuflo:1,      /* disable transmit stop on uflo */
@@ -384,6 +388,9 @@ struct pcnet32_private {
     struct timer_list   watchdog_timer;
     struct timer_list   blink_timer;
     u32                 msg_enable;     /* debug message level */
+
+    /* each bit indicates an available PHY */
+    u32                 phymask;
 };
 
 static void pcnet32_probe_vlbus(void);
@@ -415,6 +422,7 @@ static void pcnet32_get_regs(struct net_device *dev, struct ethtool_regs *regs,
 static void pcnet32_purge_tx_ring(struct net_device *dev);
 static int pcnet32_alloc_ring(struct net_device *dev, char *name);
 static void pcnet32_free_ring(struct net_device *dev);
+static void pcnet32_check_media(struct net_device *dev, int verbose);
 
 
 enum pci_flags_bit {
@@ -936,9 +944,14 @@ static int pcnet32_phys_id(struct net_device *dev, u32 data)
     return 0;
 }
 
+#define PCNET32_REGS_PER_PHY    32
+#define PCNET32_MAX_PHYS        32
 static int pcnet32_get_regs_len(struct net_device *dev)
 {
-    return(PCNET32_NUM_REGS * sizeof(u16));
+    struct pcnet32_private *lp = dev->priv;
+    int j = lp->phycount * PCNET32_REGS_PER_PHY;
+
+    return((PCNET32_NUM_REGS + j) * sizeof(u16));
 }
 
 static void pcnet32_get_regs(struct net_device *dev, struct ethtool_regs *regs,
@@ -998,9 +1011,14 @@ static void pcnet32_get_regs(struct net_device *dev, struct ethtool_regs *regs,
 
     /* read mii phy registers */
     if (lp->mii) {
-        for (i=0; i<32; i++) {
-            lp->a.write_bcr(ioaddr, 33, ((lp->mii_if.phy_id) << 5) | i);
-            *buff++ = lp->a.read_bcr(ioaddr, 34);
+        int j;
+        for (j=0; j<PCNET32_MAX_PHYS; j++) {
+            if (lp->phymask & (1 << j)) {
+                for (i=0; i<PCNET32_REGS_PER_PHY; i++) {
+                    lp->a.write_bcr(ioaddr, 33, (j << 5) | i);
+                    *buff++ = lp->a.read_bcr(ioaddr, 34);
+                }
+            }
         }
     }
 
@@ -1009,10 +1027,6 @@ static void pcnet32_get_regs(struct net_device *dev, struct ethtool_regs *regs,
         a->write_csr(ioaddr, 5, 0x0000);
     }
 
-    i = buff - (u16 *)ptr;
-    for (; i < PCNET32_NUM_REGS; i++)
-        *buff++ = 0;
-
     spin_unlock_irqrestore(&lp->lock, flags);
 }
 
@@ -1185,7 +1199,7 @@ pcnet32_probe1(unsigned long ioaddr, int shared, struct pci_dev *pdev)
         if (cards_found < MAX_UNITS && homepna[cards_found])
             media |= 1;         /* switch to home wiring mode */
         if (pcnet32_debug & NETIF_MSG_PROBE)
-            printk(KERN_DEBUG PFX "media set to %sMbit mode.\n", 
+            printk(KERN_DEBUG PFX "media set to %sMbit mode.\n",
                     (media & 1) ? "1" : "10");
         a->write_bcr(ioaddr, 49, media);
         break;
@@ -1401,8 +1415,34 @@ pcnet32_probe1(unsigned long ioaddr, int shared, struct pci_dev *pdev)
     }
 
     /* Set the mii phy_id so that we can query the link state */
-    if (lp->mii)
+    if (lp->mii) {
+        /* lp->phycount and lp->phymask are set to 0 by memset above */
+
         lp->mii_if.phy_id = ((lp->a.read_bcr (ioaddr, 33)) >> 5) & 0x1f;
+        /* scan for PHYs */
+        for (i=0; i<PCNET32_MAX_PHYS; i++) {
+            unsigned short id1, id2;
+
+            id1 = mdio_read(dev, i, MII_PHYSID1);
+            if (id1 == 0xffff)
+                continue;
+            id2 = mdio_read(dev, i, MII_PHYSID2);
+            if (id2 == 0xffff)
+                continue;
+            if (i == 31 && ((chip_version + 1) & 0xfffe) == 0x2624)
+                continue;       /* 79C971 & 79C972 have phantom phy at id 31 */
+            lp->phycount++;
+            lp->phymask |= (1 << i);
+            lp->mii_if.phy_id = i;
+            if (pcnet32_debug & NETIF_MSG_PROBE)
+                printk(KERN_INFO PFX "Found PHY %04x:%04x at address %d.\n",
+                        id1, id2, i);
+        }
+        lp->a.write_bcr(ioaddr, 33, (lp->mii_if.phy_id) << 5);
+        if (lp->phycount > 1) {
+            lp->options |= PCNET32_PORT_MII;
+        }
+    }
 
     init_timer (&lp->watchdog_timer);
     lp->watchdog_timer.data = (unsigned long) dev;
@@ -1625,7 +1665,7 @@ pcnet32_open(struct net_device *dev)
                         dev->name);
         }
     }
-    {
+    if (lp->phycount < 2) {
         /*
          * 24 Jun 2004 according AMD, in order to change the PHY,
          * DANAS (or DISPM for 79C976) must be set; then select the speed,
@@ -1651,6 +1691,62 @@ pcnet32_open(struct net_device *dev)
                 lp->a.write_bcr(ioaddr, 32, val);
             }
         }
+    } else {
+        int first_phy = -1;
+        u16 bmcr;
+        u32 bcr9;
+        struct ethtool_cmd ecmd;
+
+        /*
+         * There is really no good other way to handle multiple PHYs
+         * other than turning off all automatics
+         */
+        val = lp->a.read_bcr(ioaddr, 2);
+        lp->a.write_bcr(ioaddr, 2, val & ~2);
+        val = lp->a.read_bcr(ioaddr, 32);
+        lp->a.write_bcr(ioaddr, 32, val & ~(1 << 7)); /* stop MII manager */
+
+        if (!(lp->options & PCNET32_PORT_ASEL)) {
+            /* setup ecmd */
+            ecmd.port = PORT_MII;
+            ecmd.transceiver = XCVR_INTERNAL;
+            ecmd.autoneg = AUTONEG_DISABLE;
+            ecmd.speed = lp->options & PCNET32_PORT_100 ? SPEED_100 : SPEED_10;
+            bcr9 = lp->a.read_bcr(ioaddr, 9);
+
+            if (lp->options & PCNET32_PORT_FD) {
+                ecmd.duplex = DUPLEX_FULL;
+                bcr9 |= (1 << 0);
+            } else {
+                ecmd.duplex = DUPLEX_HALF;
+                bcr9 |= ~(1 << 0);
+            }
+            lp->a.write_bcr(ioaddr, 9, bcr9);
+        }
+
+        for (i=0; i<PCNET32_MAX_PHYS; i++) {
+            if (lp->phymask & (1 << i)) {
+                /* isolate all but the first PHY */
+                bmcr = mdio_read(dev, i, MII_BMCR);
+                if (first_phy == -1) {
+                    first_phy = i;
+                    mdio_write(dev, i, MII_BMCR, bmcr & ~BMCR_ISOLATE);
+                } else {
+                    mdio_write(dev, i, MII_BMCR, bmcr | BMCR_ISOLATE);
+                }
+                /* use mii_ethtool_sset to setup PHY */
+                lp->mii_if.phy_id = i;
+                ecmd.phy_address = i;
+                if (lp->options & PCNET32_PORT_ASEL) {
+                    mii_ethtool_gset(&lp->mii_if, &ecmd);
+                    ecmd.autoneg = AUTONEG_ENABLE;
+                }
+                mii_ethtool_sset(&lp->mii_if, &ecmd);
+            }
+        }
+        lp->mii_if.phy_id = first_phy;
+        if (netif_msg_link(lp))
+            printk(KERN_INFO "%s: Using PHY number %d.\n", dev->name, first_phy);
     }
 
 #ifdef DO_DXSUFLO
@@ -1680,11 +1776,9 @@ pcnet32_open(struct net_device *dev)
 
     netif_start_queue(dev);
 
-    /* If we have mii, print the link status and start the watchdog */
-    if (lp->mii) {
-        mii_check_media (&lp->mii_if, netif_msg_link(lp), 1);
-        mod_timer (&(lp->watchdog_timer), PCNET32_WATCHDOG_TIMEOUT);
-    }
+    /* Print the link status and start the watchdog */
+    pcnet32_check_media (dev, 1);
+    mod_timer (&(lp->watchdog_timer), PCNET32_WATCHDOG_TIMEOUT);
 
     i = 0;
     while (i++ < 100)
@@ -2430,17 +2524,111 @@ static int pcnet32_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
     return rc;
 }
 
+static int pcnet32_check_otherphy(struct net_device *dev)
+{
+    struct pcnet32_private *lp = dev->priv;
+    struct mii_if_info mii = lp->mii_if;
+    u16 bmcr;
+    int i;
+
+    for (i = 0; i < PCNET32_MAX_PHYS; i++) {
+        if (i == lp->mii_if.phy_id)
+            continue; /* skip active phy */
+        if (lp->phymask & (1 << i)) {
+            mii.phy_id = i;
+            if (mii_link_ok(&mii)) {
+                /* found PHY with active link */
+                if (netif_msg_link(lp))
+                    printk(KERN_INFO "%s: Using PHY number %d.\n", dev->name, i);
+
+                /* isolate inactive phy */
+                bmcr = mdio_read(dev, lp->mii_if.phy_id, MII_BMCR);
+                mdio_write(dev, lp->mii_if.phy_id, MII_BMCR, bmcr | BMCR_ISOLATE);
+
+                /* de-isolate new phy */
+                bmcr = mdio_read(dev, i, MII_BMCR);
+                mdio_write(dev, i, MII_BMCR, bmcr & ~BMCR_ISOLATE);
+
+                /* set new phy address */
+                lp->mii_if.phy_id = i;
+                return 1;
+            }
+        }
+    }
+    return 0;
+}
+
+/*
+ * Show the status of the media.  Similar to mii_check_media however it
+ * correctly shows the link speed for all (tested) pcnet32 variants.
+ * Devices with no mii just report link state without speed.
+ *
+ * Caller is assumed to hold and release the lp->lock.
+ */
+
+static void pcnet32_check_media(struct net_device *dev, int verbose)
+{
+    struct pcnet32_private *lp = dev->priv;
+    int curr_link;
+    int prev_link = netif_carrier_ok(dev) ? 1 : 0;
+    u32 bcr9;
+
+    if (lp->mii) {
+        curr_link = mii_link_ok(&lp->mii_if);
+    } else {
+        ulong ioaddr = dev->base_addr;  /* card base I/O address */
+        curr_link = (lp->a.read_bcr(ioaddr, 4) != 0xc0);
+    }
+    if (!curr_link) {
+        if (prev_link || verbose) {
+            netif_carrier_off(dev);
+            if (netif_msg_link(lp))
+                printk(KERN_INFO "%s: link down\n", dev->name);
+        }
+        if (lp->phycount > 1) {
+            curr_link = pcnet32_check_otherphy(dev);
+            prev_link = 0;
+        }
+    } else if (verbose || !prev_link) {
+        netif_carrier_on(dev);
+        if (lp->mii) {
+            if (netif_msg_link(lp)) {
+                struct ethtool_cmd ecmd;
+                mii_ethtool_gset(&lp->mii_if, &ecmd);
+                printk(KERN_INFO "%s: link up, %sMbps, %s-duplex\n",
+                    dev->name,
+                    (ecmd.speed == SPEED_100) ? "100" : "10",
+                    (ecmd.duplex == DUPLEX_FULL) ? "full" : "half");
+            }
+            bcr9 = lp->a.read_bcr(dev->base_addr, 9);
+            if ((bcr9 & (1 << 0)) != lp->mii_if.full_duplex)   {
+                if (lp->mii_if.full_duplex)
+                    bcr9 |= (1 << 0);
+                else
+                    bcr9 &= ~(1 << 0);
+                lp->a.write_bcr(dev->base_addr, 9, bcr9);
+            }
+        } else {
+            if (netif_msg_link(lp))
+                printk(KERN_INFO "%s: link up\n", dev->name);
+        }
+    }
+}
+
+/*
+ * Check for loss of link and link establishment.
+ * Can not use mii_check_media because it does nothing if mode is forced.
+ */
+
 static void pcnet32_watchdog(struct net_device *dev)
 {
     struct pcnet32_private *lp = dev->priv;
     unsigned long flags;
 
     /* Print the link status if it has changed */
-    if (lp->mii) {
-        spin_lock_irqsave(&lp->lock, flags);
-        mii_check_media (&lp->mii_if, netif_msg_link(lp), 0);
-        spin_unlock_irqrestore(&lp->lock, flags);
-    }
+    spin_lock_irqsave(&lp->lock, flags);
+    pcnet32_check_media(dev, 0);
+    spin_unlock_irqrestore(&lp->lock, flags);
 
     mod_timer (&(lp->watchdog_timer), PCNET32_WATCHDOG_TIMEOUT);
 }