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r8169: improve rtl8169_get_mac_version
Currently code snippet (RTL_R32(tp, TxConfig) >> 20) & 0xfcf is used in few places to extract the chip XID. Change the code to do the XID extraction only once. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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parent
711463f834
commit
f1f9ca2875
1 changed files with 26 additions and 22 deletions
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@ -2045,7 +2045,7 @@ static void rtl_enable_eee(struct rtl8169_private *tp)
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phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV, adv);
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}
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static void rtl8169_get_mac_version(struct rtl8169_private *tp)
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static enum mac_version rtl8169_get_mac_version(u16 xid, bool gmii)
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{
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/*
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* The driver currently handles the 8168Bf and the 8168Be identically
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@ -2061,7 +2061,7 @@ static void rtl8169_get_mac_version(struct rtl8169_private *tp)
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static const struct rtl_mac_info {
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u16 mask;
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u16 val;
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u16 mac_version;
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enum mac_version ver;
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} mac_info[] = {
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/* 8125 family. */
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{ 0x7cf, 0x608, RTL_GIGA_MAC_VER_60 },
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@ -2148,22 +2148,22 @@ static void rtl8169_get_mac_version(struct rtl8169_private *tp)
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{ 0x000, 0x000, RTL_GIGA_MAC_NONE }
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};
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const struct rtl_mac_info *p = mac_info;
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u16 reg = RTL_R32(tp, TxConfig) >> 20;
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enum mac_version ver;
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while ((reg & p->mask) != p->val)
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while ((xid & p->mask) != p->val)
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p++;
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tp->mac_version = p->mac_version;
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ver = p->ver;
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if (tp->mac_version == RTL_GIGA_MAC_NONE) {
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dev_err(tp_to_dev(tp), "unknown chip XID %03x\n", reg & 0xfcf);
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} else if (!tp->supports_gmii) {
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if (tp->mac_version == RTL_GIGA_MAC_VER_42)
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tp->mac_version = RTL_GIGA_MAC_VER_43;
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else if (tp->mac_version == RTL_GIGA_MAC_VER_45)
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tp->mac_version = RTL_GIGA_MAC_VER_47;
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else if (tp->mac_version == RTL_GIGA_MAC_VER_46)
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tp->mac_version = RTL_GIGA_MAC_VER_48;
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if (ver != RTL_GIGA_MAC_NONE && !gmii) {
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if (ver == RTL_GIGA_MAC_VER_42)
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ver = RTL_GIGA_MAC_VER_43;
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else if (ver == RTL_GIGA_MAC_VER_45)
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ver = RTL_GIGA_MAC_VER_47;
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else if (ver == RTL_GIGA_MAC_VER_46)
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ver = RTL_GIGA_MAC_VER_48;
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}
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return ver;
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}
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static void rtl_release_firmware(struct rtl8169_private *tp)
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@ -5440,9 +5440,10 @@ static void rtl_init_mac_address(struct rtl8169_private *tp)
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static int rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
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{
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struct rtl8169_private *tp;
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int jumbo_max, region, rc;
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enum mac_version chipset;
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struct net_device *dev;
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int chipset, region;
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int jumbo_max, rc;
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u16 xid;
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/* Some tools for creating an initramfs don't consider softdeps, then
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* r8169.ko may be in initramfs, but realtek.ko not. Then the generic
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@ -5509,10 +5510,16 @@ static int rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
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tp->mmio_addr = pcim_iomap_table(pdev)[region];
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xid = (RTL_R32(tp, TxConfig) >> 20) & 0xfcf;
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/* Identify chip attached to board */
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rtl8169_get_mac_version(tp);
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if (tp->mac_version == RTL_GIGA_MAC_NONE)
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chipset = rtl8169_get_mac_version(xid, tp->supports_gmii);
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if (chipset == RTL_GIGA_MAC_NONE) {
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dev_err(&pdev->dev, "unknown chip XID %03x\n", xid);
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return -ENODEV;
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}
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tp->mac_version = chipset;
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tp->cp_cmd = RTL_R16(tp, CPlusCmd);
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@ -5530,8 +5537,6 @@ static int rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
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pci_set_master(pdev);
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chipset = tp->mac_version;
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rc = rtl_alloc_irq(tp);
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if (rc < 0) {
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dev_err(&pdev->dev, "Can't allocate interrupt\n");
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@ -5619,8 +5624,7 @@ static int rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
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goto err_mdio_unregister;
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netif_info(tp, probe, dev, "%s, %pM, XID %03x, IRQ %d\n",
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rtl_chip_infos[chipset].name, dev->dev_addr,
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(RTL_R32(tp, TxConfig) >> 20) & 0xfcf,
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rtl_chip_infos[chipset].name, dev->dev_addr, xid,
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pci_irq_vector(pdev, 0));
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if (jumbo_max)
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