]> bbs.cooldavid.org Git - jme.git/blobdiff - jme.c
Net / jme: Do not use legacy PCI power management
[jme.git] / jme.c
diff --git a/jme.c b/jme.c
index 89c1ab7dd6f71df41b154ff65d44f2a2c22068d2..3eb01a559309cb27ec6f2b938cde8b459cfb3c5a 100644 (file)
--- a/jme.c
+++ b/jme.c
@@ -163,6 +163,67 @@ jme_setup_wakeup_frame(struct jme_adapter *jme,
        }
 }
 
+static inline void
+jme_mac_rxclk_off(struct jme_adapter *jme)
+{
+       jme->reg_gpreg1 |= GPREG1_RXCLKOFF;
+       jwrite32f(jme, JME_GPREG1, jme->reg_gpreg1);
+}
+
+static inline void
+jme_mac_rxclk_on(struct jme_adapter *jme)
+{
+       jme->reg_gpreg1 &= ~GPREG1_RXCLKOFF;
+       jwrite32f(jme, JME_GPREG1, jme->reg_gpreg1);
+}
+
+static inline void
+jme_mac_txclk_off(struct jme_adapter *jme)
+{
+       jme->reg_ghc &= ~(GHC_TO_CLK_SRC | GHC_TXMAC_CLK_SRC);
+       jwrite32f(jme, JME_GHC, jme->reg_ghc);
+}
+
+static inline void
+jme_mac_txclk_on(struct jme_adapter *jme)
+{
+       u32 speed = jme->reg_ghc & GHC_SPEED;
+       if (speed == GHC_SPEED_1000M)
+               jme->reg_ghc |= GHC_TO_CLK_GPHY | GHC_TXMAC_CLK_GPHY;
+       else
+               jme->reg_ghc |= GHC_TO_CLK_PCIE | GHC_TXMAC_CLK_PCIE;
+       jwrite32f(jme, JME_GHC, jme->reg_ghc);
+}
+
+static inline void
+jme_reset_ghc_speed(struct jme_adapter *jme)
+{
+       jme->reg_ghc &= ~(GHC_SPEED | GHC_DPX);
+       jwrite32f(jme, JME_GHC, jme->reg_ghc);
+}
+
+static inline void
+jme_reset_250A2_workaround(struct jme_adapter *jme)
+{
+       jme->reg_gpreg1 &= ~(GPREG1_HALFMODEPATCH |
+                            GPREG1_RSSPATCH);
+       jwrite32(jme, JME_GPREG1, jme->reg_gpreg1);
+}
+
+static inline void
+jme_assert_ghc_reset(struct jme_adapter *jme)
+{
+       jme->reg_ghc |= GHC_SWRST;
+       jwrite32f(jme, JME_GHC, jme->reg_ghc);
+}
+
+static inline void
+jme_clear_ghc_reset(struct jme_adapter *jme)
+{
+       jme->reg_ghc &= ~GHC_SWRST;
+       jwrite32f(jme, JME_GHC, jme->reg_ghc);
+}
+
 static inline void
 jme_reset_mac_processor(struct jme_adapter *jme)
 {
@@ -171,9 +232,24 @@ jme_reset_mac_processor(struct jme_adapter *jme)
        u32 gpreg0;
        int i;
 
-       jwrite32(jme, JME_GHC, jme->reg_ghc | GHC_SWRST);
-       udelay(2);
-       jwrite32(jme, JME_GHC, jme->reg_ghc);
+       jme_reset_ghc_speed(jme);
+       jme_reset_250A2_workaround(jme);
+
+       jme_mac_rxclk_on(jme);
+       jme_mac_txclk_on(jme);
+       udelay(1);
+       jme_assert_ghc_reset(jme);
+       udelay(1);
+       jme_mac_rxclk_off(jme);
+       jme_mac_txclk_off(jme);
+       udelay(1);
+       jme_clear_ghc_reset(jme);
+       udelay(1);
+       jme_mac_rxclk_on(jme);
+       jme_mac_txclk_on(jme);
+       udelay(1);
+       jme_mac_rxclk_off(jme);
+       jme_mac_txclk_off(jme);
 
        jwrite32(jme, JME_RXDBA_LO, 0x00000000);
        jwrite32(jme, JME_RXDBA_HI, 0x00000000);
@@ -193,14 +269,6 @@ jme_reset_mac_processor(struct jme_adapter *jme)
        else
                gpreg0 = GPREG0_DEFAULT;
        jwrite32(jme, JME_GPREG0, gpreg0);
-       jwrite32(jme, JME_GPREG1, GPREG1_DEFAULT);
-}
-
-static inline void
-jme_reset_ghc_speed(struct jme_adapter *jme)
-{
-       jme->reg_ghc &= ~(GHC_SPEED_1000M | GHC_DPX);
-       jwrite32(jme, JME_GHC, jme->reg_ghc);
 }
 
 static inline void
@@ -208,7 +276,11 @@ jme_clear_pm(struct jme_adapter *jme)
 {
        jwrite32(jme, JME_PMCS, 0xFFFF0000 | jme->reg_pmcs);
        pci_set_power_state(jme->pdev, PCI_D0);
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,26)
        pci_enable_wake(jme->pdev, PCI_D0, false);
+#else
+       device_set_wakeup_enable(&jme->pdev->dev, false);
+#endif
 }
 
 static int
@@ -354,7 +426,7 @@ static int
 jme_check_link(struct net_device *netdev, int testonly)
 {
        struct jme_adapter *jme = netdev_priv(netdev);
-       u32 phylink, ghc, cnt = JME_SPDRSV_TIMEOUT, bmcr, gpreg1;
+       u32 phylink, cnt = JME_SPDRSV_TIMEOUT, bmcr;
        char linkmsg[64];
        int rc = 0;
 
@@ -417,23 +489,21 @@ jme_check_link(struct net_device *netdev, int testonly)
 
                jme->phylink = phylink;
 
-               ghc = jme->reg_ghc & ~(GHC_SPEED | GHC_DPX |
-                               GHC_TO_CLK_PCIE | GHC_TXMAC_CLK_PCIE |
-                               GHC_TO_CLK_GPHY | GHC_TXMAC_CLK_GPHY);
+               /*
+                * The speed/duplex setting of jme->reg_ghc already cleared
+                * by jme_reset_mac_processor()
+                */
                switch (phylink & PHY_LINK_SPEED_MASK) {
                case PHY_LINK_SPEED_10M:
-                       ghc |= GHC_SPEED_10M |
-                               GHC_TO_CLK_PCIE | GHC_TXMAC_CLK_PCIE;
+                       jme->reg_ghc |= GHC_SPEED_10M;
                        strcat(linkmsg, "10 Mbps, ");
                        break;
                case PHY_LINK_SPEED_100M:
-                       ghc |= GHC_SPEED_100M |
-                               GHC_TO_CLK_PCIE | GHC_TXMAC_CLK_PCIE;
+                       jme->reg_ghc |= GHC_SPEED_100M;
                        strcat(linkmsg, "100 Mbps, ");
                        break;
                case PHY_LINK_SPEED_1000M:
-                       ghc |= GHC_SPEED_1000M |
-                               GHC_TO_CLK_GPHY | GHC_TXMAC_CLK_GPHY;
+                       jme->reg_ghc |= GHC_SPEED_1000M;
                        strcat(linkmsg, "1000 Mbps, ");
                        break;
                default:
@@ -442,30 +512,31 @@ jme_check_link(struct net_device *netdev, int testonly)
 
                if (phylink & PHY_LINK_DUPLEX) {
                        jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT);
-                       ghc |= GHC_DPX;
+                       jwrite32(jme, JME_TXTRHD, TXTRHD_FULLDUPLEX);
+                       jme->reg_ghc |= GHC_DPX;
                } else {
                        jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT |
                                                TXMCS_BACKOFF |
                                                TXMCS_CARRIERSENSE |
                                                TXMCS_COLLISION);
-                       jwrite32(jme, JME_TXTRHD, TXTRHD_TXPEN |
-                               ((0x2000 << TXTRHD_TXP_SHIFT) & TXTRHD_TXP) |
-                               TXTRHD_TXREN |
-                               ((8 << TXTRHD_TXRL_SHIFT) & TXTRHD_TXRL));
+                       jwrite32(jme, JME_TXTRHD, TXTRHD_HALFDUPLEX);
                }
 
-               gpreg1 = GPREG1_DEFAULT;
+               jwrite32(jme, JME_GHC, jme->reg_ghc);
+
                if (is_buggy250(jme->pdev->device, jme->chiprev)) {
+                       jme->reg_gpreg1 &= ~(GPREG1_HALFMODEPATCH |
+                                            GPREG1_RSSPATCH);
                        if (!(phylink & PHY_LINK_DUPLEX))
-                               gpreg1 |= GPREG1_HALFMODEPATCH;
+                               jme->reg_gpreg1 |= GPREG1_HALFMODEPATCH;
                        switch (phylink & PHY_LINK_SPEED_MASK) {
                        case PHY_LINK_SPEED_10M:
                                jme_set_phyfifo_8level(jme);
-                               gpreg1 |= GPREG1_RSSPATCH;
+                               jme->reg_gpreg1 |= GPREG1_RSSPATCH;
                                break;
                        case PHY_LINK_SPEED_100M:
                                jme_set_phyfifo_5level(jme);
-                               gpreg1 |= GPREG1_RSSPATCH;
+                               jme->reg_gpreg1 |= GPREG1_RSSPATCH;
                                break;
                        case PHY_LINK_SPEED_1000M:
                                jme_set_phyfifo_8level(jme);
@@ -474,10 +545,7 @@ jme_check_link(struct net_device *netdev, int testonly)
                                break;
                        }
                }
-
-               jwrite32(jme, JME_GPREG1, gpreg1);
-               jwrite32(jme, JME_GHC, ghc);
-               jme->reg_ghc = ghc;
+               jwrite32(jme, JME_GPREG1, jme->reg_gpreg1);
 
                strcat(linkmsg, (phylink & PHY_LINK_DUPLEX) ?
                                        "Full-Duplex, " :
@@ -616,10 +684,14 @@ jme_enable_tx_engine(struct jme_adapter *jme)
         * Enable TX Engine
         */
        wmb();
-       jwrite32(jme, JME_TXCS, jme->reg_txcs |
+       jwrite32f(jme, JME_TXCS, jme->reg_txcs |
                                TXCS_SELECT_QUEUE0 |
                                TXCS_ENABLE);
 
+       /*
+        * Start clock for TX MAC Processor
+        */
+       jme_mac_txclk_on(jme);
 }
 
 static inline void
@@ -654,6 +726,11 @@ jme_disable_tx_engine(struct jme_adapter *jme)
 
        if (!i)
                pr_err("Disable TX engine timeout\n");
+
+       /*
+        * Stop clock for TX MAC Processor
+        */
+       jme_mac_txclk_off(jme);
 }
 
 static void
@@ -831,16 +908,22 @@ jme_enable_rx_engine(struct jme_adapter *jme)
        /*
         * Setup Unicast Filter
         */
+       jme_set_unicastaddr(jme->dev);
        jme_set_multi(jme->dev);
 
        /*
         * Enable RX Engine
         */
        wmb();
-       jwrite32(jme, JME_RXCS, jme->reg_rxcs |
+       jwrite32f(jme, JME_RXCS, jme->reg_rxcs |
                                RXCS_QUEUESEL_Q0 |
                                RXCS_ENABLE |
                                RXCS_QST);
+
+       /*
+        * Start clock for RX MAC Processor
+        */
+       jme_mac_rxclk_on(jme);
 }
 
 static inline void
@@ -877,10 +960,40 @@ jme_disable_rx_engine(struct jme_adapter *jme)
        if (!i)
                pr_err("Disable RX engine timeout\n");
 
+       /*
+        * Stop clock for RX MAC Processor
+        */
+       jme_mac_rxclk_off(jme);
+}
+
+static u16
+jme_udpsum(struct sk_buff *skb)
+{
+       u16 csum = 0xFFFFu;
+
+       if (skb->len < (ETH_HLEN + sizeof(struct iphdr)))
+               return csum;
+       if (skb->protocol != htons(ETH_P_IP))
+               return csum;
+       skb_set_network_header(skb, ETH_HLEN);
+       if ((ip_hdr(skb)->protocol != IPPROTO_UDP) ||
+           (skb->len < (ETH_HLEN +
+                       (ip_hdr(skb)->ihl << 2) +
+                       sizeof(struct udphdr)))) {
+               skb_reset_network_header(skb);
+               return csum;
+       }
+       skb_set_transport_header(skb,
+                       ETH_HLEN + (ip_hdr(skb)->ihl << 2));
+       csum = udp_hdr(skb)->check;
+       skb_reset_transport_header(skb);
+       skb_reset_network_header(skb);
+
+       return csum;
 }
 
 static int
-jme_rxsum_ok(struct jme_adapter *jme, u16 flags)
+jme_rxsum_ok(struct jme_adapter *jme, u16 flags, struct sk_buff *skb)
 {
        if (!(flags & (RXWBFLAG_TCPON | RXWBFLAG_UDPON | RXWBFLAG_IPV4)))
                return false;
@@ -893,7 +1006,7 @@ jme_rxsum_ok(struct jme_adapter *jme, u16 flags)
        }
 
        if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_UDPON | RXWBFLAG_UDPCS))
-                       == RXWBFLAG_UDPON)) {
+                       == RXWBFLAG_UDPON) && jme_udpsum(skb)) {
                if (flags & RXWBFLAG_IPV4)
                        netif_err(jme, rx_err, jme->dev, "UDP Checksum error\n");
                return false;
@@ -941,7 +1054,7 @@ jme_alloc_and_feed_skb(struct jme_adapter *jme, int idx)
                skb_put(skb, framesize);
                skb->protocol = eth_type_trans(skb, jme->dev);
 
-               if (jme_rxsum_ok(jme, le16_to_cpu(rxdesc->descwb.flags)))
+               if (jme_rxsum_ok(jme, le16_to_cpu(rxdesc->descwb.flags), skb))
                        skb->ip_summed = CHECKSUM_UNNECESSARY;
                else
 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,35)
@@ -1217,7 +1330,6 @@ jme_link_change_tasklet(unsigned long arg)
        tasklet_disable(&jme->rxempty_task);
 
        if (netif_carrier_ok(netdev)) {
-               jme_reset_ghc_speed(jme);
                jme_disable_rx_engine(jme);
                jme_disable_tx_engine(jme);
                jme_reset_mac_processor(jme);
@@ -1763,7 +1875,6 @@ jme_close(struct net_device *netdev)
        tasklet_disable(&jme->rxclean_task);
        tasklet_disable(&jme->rxempty_task);
 
-       jme_reset_ghc_speed(jme);
        jme_disable_rx_engine(jme);
        jme_disable_tx_engine(jme);
        jme_reset_mac_processor(jme);
@@ -2089,27 +2200,34 @@ jme_start_xmit(struct sk_buff *skb, struct net_device *netdev)
        return NETDEV_TX_OK;
 }
 
+static void
+jme_set_unicastaddr(struct net_device *netdev)
+{
+       struct jme_adapter *jme = netdev_priv(netdev);
+       u32 val;
+
+       val = (netdev->dev_addr[3] & 0xff) << 24 |
+             (netdev->dev_addr[2] & 0xff) << 16 |
+             (netdev->dev_addr[1] & 0xff) <<  8 |
+             (netdev->dev_addr[0] & 0xff);
+       jwrite32(jme, JME_RXUMA_LO, val);
+       val = (netdev->dev_addr[5] & 0xff) << 8 |
+             (netdev->dev_addr[4] & 0xff);
+       jwrite32(jme, JME_RXUMA_HI, val);
+}
+
 static int
 jme_set_macaddr(struct net_device *netdev, void *p)
 {
        struct jme_adapter *jme = netdev_priv(netdev);
        struct sockaddr *addr = p;
-       u32 val;
 
        if (netif_running(netdev))
                return -EBUSY;
 
        spin_lock_bh(&jme->macaddr_lock);
        memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
-
-       val = (addr->sa_data[3] & 0xff) << 24 |
-             (addr->sa_data[2] & 0xff) << 16 |
-             (addr->sa_data[1] & 0xff) <<  8 |
-             (addr->sa_data[0] & 0xff);
-       jwrite32(jme, JME_RXUMA_LO, val);
-       val = (addr->sa_data[5] & 0xff) << 8 |
-             (addr->sa_data[4] & 0xff);
-       jwrite32(jme, JME_RXUMA_HI, val);
+       jme_set_unicastaddr(netdev);
        spin_unlock_bh(&jme->macaddr_lock);
 
        return 0;
@@ -2516,6 +2634,10 @@ jme_set_wol(struct net_device *netdev,
 
        jwrite32(jme, JME_PMCS, jme->reg_pmcs);
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,26)
+       device_set_wakeup_enable(&jme->pdev->dev, jme->reg_pmcs);
+#endif
+
        return 0;
 }
 
@@ -3060,6 +3182,7 @@ jme_init_one(struct pci_dev *pdev,
        jme->reg_rxmcs = RXMCS_DEFAULT;
        jme->reg_txpfc = 0;
        jme->reg_pmcs = PMCS_MFEN;
+       jme->reg_gpreg1 = GPREG1_DEFAULT;
        set_bit(JME_FLAG_TXCSUM, &jme->flags);
        set_bit(JME_FLAG_TSO, &jme->flags);
 
@@ -3117,7 +3240,11 @@ jme_init_one(struct pci_dev *pdev,
 
        jme_clear_pm(jme);
        jme_set_phyfifo_5level(jme);
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,22)
        pci_read_config_byte(pdev, PCI_REVISION_ID, &jme->pcirev);
+#else
+       jme->pcirev = pdev->revision;
+#endif
        if (!jme->fpgaver)
                jme_phy_init(jme);
        jme_phy_off(jme);
@@ -3206,8 +3333,15 @@ jme_shutdown(struct pci_dev *pdev)
 
 #ifdef CONFIG_PM
 static int
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,38)
 jme_suspend(struct pci_dev *pdev, pm_message_t state)
+#else
+jme_suspend(struct device *dev)
+#endif
 {
+#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,38)
+       struct pci_dev *pdev = to_pci_dev(dev);
+#endif
        struct net_device *netdev = pci_get_drvdata(pdev);
        struct jme_adapter *jme = netdev_priv(netdev);
 
@@ -3226,7 +3360,6 @@ jme_suspend(struct pci_dev *pdev, pm_message_t state)
                        jme_polling_mode(jme);
 
                jme_stop_pcc_timer(jme);
-               jme_reset_ghc_speed(jme);
                jme_disable_rx_engine(jme);
                jme_disable_tx_engine(jme);
                jme_reset_mac_processor(jme);
@@ -3240,22 +3373,37 @@ jme_suspend(struct pci_dev *pdev, pm_message_t state)
        tasklet_hi_enable(&jme->rxclean_task);
        tasklet_hi_enable(&jme->rxempty_task);
 
-       pci_save_state(pdev);
        jme_powersave_phy(jme);
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,38)
+       pci_save_state(pdev);
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,27)
        pci_enable_wake(pdev, PCI_D3hot, true);
+#else
+       pci_pme_active(pdev, true);
+#endif
        pci_set_power_state(pdev, PCI_D3hot);
+#endif
 
        return 0;
 }
 
 static int
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,38)
 jme_resume(struct pci_dev *pdev)
+#else
+jme_resume(struct device *dev)
+#endif
 {
+#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,38)
+       struct pci_dev *pdev = to_pci_dev(dev);
+#endif
        struct net_device *netdev = pci_get_drvdata(pdev);
        struct jme_adapter *jme = netdev_priv(netdev);
 
        jme_clear_pm(jme);
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,38)
        pci_restore_state(pdev);
+#endif
 
        jme_phy_on(jme);
        if (test_bit(JME_FLAG_SSET, &jme->flags))
@@ -3272,6 +3420,17 @@ jme_resume(struct pci_dev *pdev)
 
        return 0;
 }
+
+#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,38)
+static SIMPLE_DEV_PM_OPS(jme_pm_ops, jme_suspend, jme_resume);
+#define JME_PM_OPS (&jme_pm_ops)
+#endif
+
+#else
+
+#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,38)
+#define JME_PM_OPS NULL
+#endif
 #endif
 
 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,24)
@@ -3289,11 +3448,13 @@ static struct pci_driver jme_driver = {
        .id_table       = jme_pci_tbl,
        .probe          = jme_init_one,
        .remove         = __devexit_p(jme_remove_one),
-#ifdef CONFIG_PM
-       .suspend        = jme_suspend,
-       .resume         = jme_resume,
-#endif /* CONFIG_PM */
        .shutdown       = jme_shutdown,
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,38)
+       .suspend        = jme_suspend,
+       .resume         = jme_resume
+#else
+       .driver.pm      = JME_PM_OPS,
+#endif
 };
 
 static int __init