jme: Add comment in jme_set_settings
[jme.git] / jme.c
diff --git a/jme.c b/jme.c
index 1fcd533..0ea0da3 100644 (file)
--- a/jme.c
+++ b/jme.c
@@ -21,6 +21,8 @@
  *
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/pci.h>
@@ -73,7 +75,7 @@ read_again:
        }
 
        if (i == 0) {
-               jeprintk(jme->pdev, "phy(%d) read timeout : %d\n", phy, reg);
+               pr_err("phy(%d) read timeout : %d\n", phy, reg);
                return 0;
        }
 
@@ -102,7 +104,7 @@ jme_mdio_write(struct net_device *netdev,
        }
 
        if (i == 0)
-               jeprintk(jme->pdev, "phy(%d) write timeout : %d\n", phy, reg);
+               pr_err("phy(%d) write timeout : %d\n", phy, reg);
 }
 
 static inline void
@@ -227,7 +229,7 @@ jme_reload_eeprom(struct jme_adapter *jme)
                }
 
                if (i == 0) {
-                       jeprintk(jme->pdev, "eeprom reload timeout\n");
+                       pr_err("eeprom reload timeout\n");
                        return -EIO;
                }
        }
@@ -397,8 +399,7 @@ jme_check_link(struct net_device *netdev, int testonly)
                                        phylink = jread32(jme, JME_PHY_LINK);
                        }
                        if (!cnt)
-                               jeprintk(jme->pdev,
-                                       "Waiting speed resolve timeout.\n");
+                               pr_err("Waiting speed resolve timeout\n");
 
                        strcat(linkmsg, "ANed: ");
                }
@@ -480,13 +481,13 @@ jme_check_link(struct net_device *netdev, int testonly)
                strcat(linkmsg, (phylink & PHY_LINK_MDI_STAT) ?
                                        "MDI-X" :
                                        "MDI");
-               netif_info(jme, link, jme->dev, "Link is up at %s.\n", linkmsg);
+               netif_info(jme, link, jme->dev, "Link is up at %s\n", linkmsg);
                netif_carrier_on(netdev);
        } else {
                if (testonly)
                        goto out;
 
-               netif_info(jme, link, jme->dev, "Link is down.\n");
+               netif_info(jme, link, jme->dev, "Link is down\n");
                jme->phylink = 0;
                netif_carrier_off(netdev);
        }
@@ -648,7 +649,7 @@ jme_disable_tx_engine(struct jme_adapter *jme)
        }
 
        if (!i)
-               jeprintk(jme->pdev, "Disable TX engine timeout.\n");
+               pr_err("Disable TX engine timeout\n");
 }
 
 static void
@@ -867,7 +868,7 @@ jme_disable_rx_engine(struct jme_adapter *jme)
        }
 
        if (!i)
-               jeprintk(jme->pdev, "Disable RX engine timeout.\n");
+               pr_err("Disable RX engine timeout\n");
 
 }
 
@@ -887,13 +888,13 @@ jme_rxsum_ok(struct jme_adapter *jme, u16 flags)
        if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_UDPON | RXWBFLAG_UDPCS))
                        == RXWBFLAG_UDPON)) {
                if (flags & RXWBFLAG_IPV4)
-                       netif_err(jme, rx_err, jme->dev, "UDP Checksum error.\n");
+                       netif_err(jme, rx_err, jme->dev, "UDP Checksum error\n");
                return false;
        }
 
        if (unlikely((flags & (RXWBFLAG_IPV4 | RXWBFLAG_IPCS))
                        == RXWBFLAG_IPV4)) {
-               netif_err(jme, rx_err, jme->dev, "IPv4 Checksum error.\n");
+               netif_err(jme, rx_err, jme->dev, "IPv4 Checksum error\n");
                return false;
        }
 
@@ -1185,9 +1186,9 @@ jme_link_change_tasklet(unsigned long arg)
 
        while (!atomic_dec_and_test(&jme->link_changing)) {
                atomic_inc(&jme->link_changing);
-               netif_info(jme, intr, jme->dev, "Get link change lock failed.\n");
+               netif_info(jme, intr, jme->dev, "Get link change lock failed\n");
                while (atomic_read(&jme->link_changing) != 1)
-                       netif_info(jme, intr, jme->dev, "Waiting link change lock.\n");
+                       netif_info(jme, intr, jme->dev, "Waiting link change lock\n");
        }
 
        if (jme_check_link(netdev, 1) && jme->old_mtu == netdev->mtu)
@@ -1221,15 +1222,13 @@ jme_link_change_tasklet(unsigned long arg)
        if (netif_carrier_ok(netdev)) {
                rc = jme_setup_rx_resources(jme);
                if (rc) {
-                       jeprintk(jme->pdev, "Allocating resources for RX error"
-                               ", Device STOPPED!\n");
+                       pr_err("Allocating resources for RX error, Device STOPPED!\n");
                        goto out_enable_tasklet;
                }
 
                rc = jme_setup_tx_resources(jme);
                if (rc) {
-                       jeprintk(jme->pdev, "Allocating resources for TX error"
-                               ", Device STOPPED!\n");
+                       pr_err("Allocating resources for TX error, Device STOPPED!\n");
                        goto err_out_free_rx_resources;
                }
 
@@ -1324,7 +1323,7 @@ jme_wake_queue_if_stopped(struct jme_adapter *jme)
        smp_wmb();
        if (unlikely(netif_queue_stopped(jme->dev) &&
        atomic_read(&txring->nr_free) >= (jme->tx_wake_threshold))) {
-               netif_info(jme, tx_done, jme->dev, "TX Queue Waked.\n");
+               netif_info(jme, tx_done, jme->dev, "TX Queue Waked\n");
                netif_wake_queue(jme->dev);
        }
 
@@ -1339,7 +1338,7 @@ jme_tx_clean_tasklet(unsigned long arg)
        struct jme_buffer_info *txbi = txring->bufinf, *ctxbi, *ttxbi;
        int i, j, cnt = 0, max, err, mask;
 
-       tx_dbg(jme, "Into txclean.\n");
+       tx_dbg(jme, "Into txclean\n");
 
        if (unlikely(!atomic_dec_and_test(&jme->tx_cleaning)))
                goto out;
@@ -1361,7 +1360,7 @@ jme_tx_clean_tasklet(unsigned long arg)
                !(txdesc[i].descwb.flags & TXWBFLAG_OWN))) {
 
                        tx_dbg(jme, "txclean: %d+%d@%lu\n",
-                                       i, ctxbi->nr_desc, jiffies);
+                              i, ctxbi->nr_desc, jiffies);
 
                        err = txdesc[i].descwb.flags & TXWBFLAG_ALLERR;
 
@@ -1402,7 +1401,7 @@ jme_tx_clean_tasklet(unsigned long arg)
                ctxbi->nr_desc = 0;
        }
 
-       tx_dbg(jme, "txclean: done %d@%lu.\n", i, jiffies);
+       tx_dbg(jme, "txclean: done %d@%lu\n", i, jiffies);
        atomic_set(&txring->next_to_clean, i);
        atomic_add(cnt, &txring->nr_free);
 
@@ -1548,10 +1547,10 @@ jme_request_irq(struct jme_adapter *jme)
        rc = request_irq(jme->pdev->irq, handler, irq_flags, netdev->name,
                          netdev);
        if (rc) {
-               jeprintk(jme->pdev,
-                       "Unable to request %s interrupt (return: %d)\n",
-                       test_bit(JME_FLAG_MSI, &jme->flags) ? "MSI" : "INTx",
-                       rc);
+               netdev_err(netdev,
+                          "Unable to request %s interrupt (return: %d)\n",
+                          test_bit(JME_FLAG_MSI, &jme->flags) ? "MSI" : "INTx",
+                          rc);
 
                if (test_bit(JME_FLAG_MSI, &jme->flags)) {
                        pci_disable_msi(jme->pdev);
@@ -1575,6 +1574,16 @@ jme_free_irq(struct jme_adapter *jme)
        }
 }
 
+static inline void
+jme_phy_on(struct jme_adapter *jme)
+{
+       u32 bmcr;
+
+       bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
+       bmcr &= ~BMCR_PDOWN;
+       jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
+}
+
 static int
 jme_open(struct net_device *netdev)
 {
@@ -1595,10 +1604,12 @@ jme_open(struct net_device *netdev)
 
        jme_start_irq(jme);
 
-       if (test_bit(JME_FLAG_SSET, &jme->flags))
+       if (test_bit(JME_FLAG_SSET, &jme->flags)) {
+               jme_phy_on(jme);
                jme_set_settings(netdev, &jme->old_ecmd);
-       else
+       } else {
                jme_reset_phy_processor(jme);
+       }
 
        jme_reset_link(jme);
 
@@ -1834,7 +1845,7 @@ jme_tx_csum(struct jme_adapter *jme, struct sk_buff *skb, u8 *flags)
                        *flags |= TXFLAG_UDPCS;
                        break;
                default:
-                       netif_err(jme, tx_err, jme->dev, "Error upper layer protocol.\n");
+                       netif_err(jme, tx_err, jme->dev, "Error upper layer protocol\n");
                        break;
                }
        }
@@ -1909,12 +1920,12 @@ jme_stop_queue_if_full(struct jme_adapter *jme)
        smp_wmb();
        if (unlikely(atomic_read(&txring->nr_free) < (MAX_SKB_FRAGS+2))) {
                netif_stop_queue(jme->dev);
-               netif_info(jme, tx_queued, jme->dev, "TX Queue Paused.\n");
+               netif_info(jme, tx_queued, jme->dev, "TX Queue Paused\n");
                smp_wmb();
                if (atomic_read(&txring->nr_free)
                        >= (jme->tx_wake_threshold)) {
                        netif_wake_queue(jme->dev);
-                       netif_info(jme, tx_queued, jme->dev, "TX Queue Fast Waked.\n");
+                       netif_info(jme, tx_queued, jme->dev, "TX Queue Fast Waked\n");
                }
        }
 
@@ -1922,7 +1933,8 @@ jme_stop_queue_if_full(struct jme_adapter *jme)
                        (jiffies - txbi->start_xmit) >= TX_TIMEOUT &&
                        txbi->skb)) {
                netif_stop_queue(jme->dev);
-               netif_info(jme, tx_queued, jme->dev, "TX Queue Stopped %d@%lu.\n", idx, jiffies);
+               netif_info(jme, tx_queued, jme->dev,
+                          "TX Queue Stopped %d@%lu\n", idx, jiffies);
        }
 }
 
@@ -1945,7 +1957,8 @@ jme_start_xmit(struct sk_buff *skb, struct net_device *netdev)
 
        if (unlikely(idx < 0)) {
                netif_stop_queue(netdev);
-               netif_err(jme, tx_err, jme->dev, "BUG! Tx ring full when queue awake!\n");
+               netif_err(jme, tx_err, jme->dev,
+                         "BUG! Tx ring full when queue awake!\n");
 
                return NETDEV_TX_BUSY;
        }
@@ -1957,9 +1970,8 @@ jme_start_xmit(struct sk_buff *skb, struct net_device *netdev)
                                TXCS_QUEUE0S |
                                TXCS_ENABLE);
 
-       tx_dbg(jme, "xmit: %d+%d@%lu\n", idx,
-                       skb_shinfo(skb)->nr_frags + 2,
-                       jiffies);
+       tx_dbg(jme, "xmit: %d+%d@%lu\n",
+              idx, skb_shinfo(skb)->nr_frags + 2, jiffies);
        jme_stop_queue_if_full(jme);
 
        return NETDEV_TX_OK;
@@ -2382,6 +2394,10 @@ jme_set_settings(struct net_device *netdev,
        if (ecmd->speed == SPEED_1000 && ecmd->autoneg != AUTONEG_ENABLE)
                return -EINVAL;
 
+       /*
+        * Check If user changed duplex only while force_media.
+        * Hardware would not generate link change interrupt.
+        */
        if (jme->mii_if.force_media &&
        ecmd->autoneg != AUTONEG_ENABLE &&
        (jme->mii_if.full_duplex != ecmd->duplex))
@@ -2391,10 +2407,9 @@ jme_set_settings(struct net_device *netdev,
        rc = mii_ethtool_sset(&(jme->mii_if), ecmd);
        spin_unlock_bh(&jme->phy_lock);
 
-       if (!rc && fdc)
-               jme_reset_link(jme);
-
        if (!rc) {
+               if (fdc)
+                       jme_reset_link(jme);
                set_bit(JME_FLAG_SSET, &jme->flags);
                jme->old_ecmd = *ecmd;
        }
@@ -2501,7 +2516,7 @@ jme_smb_read(struct jme_adapter *jme, unsigned int addr)
                val = jread32(jme, JME_SMBCSR);
        }
        if (!to) {
-               netif_err(jme, hw, jme->dev, "SMB Bus Busy.\n");
+               netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
                return 0xFF;
        }
 
@@ -2517,7 +2532,7 @@ jme_smb_read(struct jme_adapter *jme, unsigned int addr)
                val = jread32(jme, JME_SMBINTF);
        }
        if (!to) {
-               netif_err(jme, hw, jme->dev, "SMB Bus Busy.\n");
+               netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
                return 0xFF;
        }
 
@@ -2537,7 +2552,7 @@ jme_smb_write(struct jme_adapter *jme, unsigned int addr, u8 data)
                val = jread32(jme, JME_SMBCSR);
        }
        if (!to) {
-               netif_err(jme, hw, jme->dev, "SMB Bus Busy.\n");
+               netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
                return;
        }
 
@@ -2554,7 +2569,7 @@ jme_smb_write(struct jme_adapter *jme, unsigned int addr, u8 data)
                val = jread32(jme, JME_SMBINTF);
        }
        if (!to) {
-               netif_err(jme, hw, jme->dev, "SMB Bus Busy.\n");
+               netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
                return;
        }
 
@@ -2699,26 +2714,26 @@ jme_init_one(struct pci_dev *pdev,
         */
        rc = pci_enable_device(pdev);
        if (rc) {
-               jeprintk(pdev, "Cannot enable PCI device.\n");
+               pr_err("Cannot enable PCI device\n");
                goto err_out;
        }
 
        using_dac = jme_pci_dma64(pdev);
        if (using_dac < 0) {
-               jeprintk(pdev, "Cannot set PCI DMA Mask.\n");
+               pr_err("Cannot set PCI DMA Mask\n");
                rc = -EIO;
                goto err_out_disable_pdev;
        }
 
        if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
-               jeprintk(pdev, "No PCI resource region found.\n");
+               pr_err("No PCI resource region found\n");
                rc = -ENOMEM;
                goto err_out_disable_pdev;
        }
 
        rc = pci_request_regions(pdev, DRV_NAME);
        if (rc) {
-               jeprintk(pdev, "Cannot obtain PCI resource region.\n");
+               pr_err("Cannot obtain PCI resource region\n");
                goto err_out_disable_pdev;
        }
 
@@ -2729,7 +2744,7 @@ jme_init_one(struct pci_dev *pdev,
         */
        netdev = alloc_etherdev(sizeof(*jme));
        if (!netdev) {
-               jeprintk(pdev, "Cannot allocate netdev structure.\n");
+               pr_err("Cannot allocate netdev structure\n");
                rc = -ENOMEM;
                goto err_out_release_regions;
        }
@@ -2767,7 +2782,7 @@ jme_init_one(struct pci_dev *pdev,
        jme->regs = ioremap(pci_resource_start(pdev, 0),
                             pci_resource_len(pdev, 0));
        if (!(jme->regs)) {
-               jeprintk(pdev, "Mapping PCI resource region error.\n");
+               pr_err("Mapping PCI resource region error\n");
                rc = -ENOMEM;
                goto err_out_free_netdev;
        }
@@ -2855,8 +2870,8 @@ jme_init_one(struct pci_dev *pdev,
 
                if (!jme->mii_if.phy_id) {
                        rc = -EIO;
-                       jeprintk(pdev, "Can not find phy_id.\n");
-                        goto err_out_unmap;
+                       pr_err("Can not find phy_id\n");
+                       goto err_out_unmap;
                }
 
                jme->reg_ghc |= GHC_LINK_POLL;
@@ -2883,8 +2898,7 @@ jme_init_one(struct pci_dev *pdev,
        jme_reset_mac_processor(jme);
        rc = jme_reload_eeprom(jme);
        if (rc) {
-               jeprintk(pdev,
-                       "Reload eeprom for reading MAC Address error.\n");
+               pr_err("Reload eeprom for reading MAC Address error\n");
                goto err_out_unmap;
        }
        jme_load_macaddr(netdev);
@@ -2900,7 +2914,7 @@ jme_init_one(struct pci_dev *pdev,
         */
        rc = register_netdev(netdev);
        if (rc) {
-               jeprintk(pdev, "Cannot register net device.\n");
+               pr_err("Cannot register net device\n");
                goto err_out_unmap;
        }
 
@@ -3006,10 +3020,12 @@ jme_resume(struct pci_dev *pdev)
        jme_clear_pm(jme);
        pci_restore_state(pdev);
 
-       if (test_bit(JME_FLAG_SSET, &jme->flags))
+       if (test_bit(JME_FLAG_SSET, &jme->flags)) {
+               jme_phy_on(jme);
                jme_set_settings(netdev, &jme->old_ecmd);
-       else
+       } else {
                jme_reset_phy_processor(jme);
+       }
 
        jme_start_irq(jme);
        netif_device_attach(netdev);
@@ -3042,8 +3058,7 @@ static struct pci_driver jme_driver = {
 static int __init
 jme_init_module(void)
 {
-       printk(KERN_INFO PFX "JMicron JMC2XX ethernet "
-              "driver version %s\n", DRV_VERSION);
+       pr_info("JMicron JMC2XX ethernet driver version %s\n", DRV_VERSION);
        return pci_register_driver(&jme_driver);
 }