1 files changed, 7939 insertions, 0 deletions

diff --git a/drivers/net/niu.c b/drivers/net/niu.c
new file mode 100644
index 000000000000..43bfe7e6b6f5
--- /dev/null
+++ b/drivers/net/niu.c
@@ -0,0 +1,7939 @@
+/* niu.c: Neptune ethernet driver.
+ *
+ * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
+#include <linux/netdevice.h>
+#include <linux/ethtool.h>
+#include <linux/etherdevice.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+#include <linux/bitops.h>
+#include <linux/mii.h>
+#include <linux/if_ether.h>
+#include <linux/if_vlan.h>
+#include <linux/ip.h>
+#include <linux/in.h>
+#include <linux/ipv6.h>
+#include <linux/log2.h>
+#include <linux/jiffies.h>
+#include <linux/crc32.h>
+
+#include <linux/io.h>
+
+#ifdef CONFIG_SPARC64
+#include <linux/of_device.h>
+#endif
+
+#include "niu.h"
+
+#define DRV_MODULE_NAME         "niu"
+#define PFX DRV_MODULE_NAME     ": "
+#define DRV_MODULE_VERSION      "0.5"
+#define DRV_MODULE_RELDATE      "October 5, 2007"
+
+static char version[] __devinitdata =
+        DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
+
+MODULE_AUTHOR("David S. Miller (davem@davemloft.net)");
+MODULE_DESCRIPTION("NIU ethernet driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_MODULE_VERSION);
+
+#ifndef DMA_44BIT_MASK
+#define DMA_44BIT_MASK  0x00000fffffffffffULL
+#endif
+
+#ifndef readq
+static u64 readq(void __iomem *reg)
+{
+        return (((u64)readl(reg + 0x4UL) << 32) |
+                (u64)readl(reg));
+}
+
+static void writeq(u64 val, void __iomem *reg)
+{
+        writel(val & 0xffffffff, reg);
+        writel(val >> 32, reg + 0x4UL);
+}
+#endif
+
+static struct pci_device_id niu_pci_tbl[] = {
+        {PCI_DEVICE(PCI_VENDOR_ID_SUN, 0xabcd)},
+        {}
+};
+
+MODULE_DEVICE_TABLE(pci, niu_pci_tbl);
+
+#define NIU_TX_TIMEOUT                  (5 * HZ)
+
+#define nr64(reg)               readq(np->regs + (reg))
+#define nw64(reg, val)          writeq((val), np->regs + (reg))
+
+#define nr64_mac(reg)           readq(np->mac_regs + (reg))
+#define nw64_mac(reg, val)      writeq((val), np->mac_regs + (reg))
+
+#define nr64_ipp(reg)           readq(np->regs + np->ipp_off + (reg))
+#define nw64_ipp(reg, val)      writeq((val), np->regs + np->ipp_off + (reg))
+
+#define nr64_pcs(reg)           readq(np->regs + np->pcs_off + (reg))
+#define nw64_pcs(reg, val)      writeq((val), np->regs + np->pcs_off + (reg))
+
+#define nr64_xpcs(reg)          readq(np->regs + np->xpcs_off + (reg))
+#define nw64_xpcs(reg, val)     writeq((val), np->regs + np->xpcs_off + (reg))
+
+#define NIU_MSG_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)
+
+static int niu_debug;
+static int debug = -1;
+module_param(debug, int, 0);
+MODULE_PARM_DESC(debug, "NIU debug level");
+
+#define niudbg(TYPE, f, a...) \
+do {    if ((np)->msg_enable & NETIF_MSG_##TYPE) \
+                printk(KERN_DEBUG PFX f, ## a); \
+} while (0)
+
+#define niuinfo(TYPE, f, a...) \
+do {    if ((np)->msg_enable & NETIF_MSG_##TYPE) \
+                printk(KERN_INFO PFX f, ## a); \
+} while (0)
+
+#define niuwarn(TYPE, f, a...) \
+do {    if ((np)->msg_enable & NETIF_MSG_##TYPE) \
+                printk(KERN_WARNING PFX f, ## a); \
+} while (0)
+
+#define niu_lock_parent(np, flags) \
+        spin_lock_irqsave(&np->parent->lock, flags)
+#define niu_unlock_parent(np, flags) \
+        spin_unlock_irqrestore(&np->parent->lock, flags)
+
+static int __niu_wait_bits_clear_mac(struct niu *np, unsigned long reg,
+                                     u64 bits, int limit, int delay)
+{
+        while (--limit >= 0) {
+                u64 val = nr64_mac(reg);
+
+                if (!(val & bits))
+                        break;
+                udelay(delay);
+        }
+        if (limit < 0)
+                return -ENODEV;
+        return 0;
+}
+
+static int __niu_set_and_wait_clear_mac(struct niu *np, unsigned long reg,
+                                        u64 bits, int limit, int delay,
+                                        const char *reg_name)
+{
+        int err;
+
+        nw64_mac(reg, bits);
+        err = __niu_wait_bits_clear_mac(np, reg, bits, limit, delay);
+        if (err)
+                dev_err(np->device, PFX "%s: bits (%llx) of register %s "
+                        "would not clear, val[%llx]\n",
+                        np->dev->name, (unsigned long long) bits, reg_name,
+                        (unsigned long long) nr64_mac(reg));
+        return err;
+}
+
+#define niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
+({      BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
+        __niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
+})
+
+static int __niu_wait_bits_clear_ipp(struct niu *np, unsigned long reg,
+                                     u64 bits, int limit, int delay)
+{
+        while (--limit >= 0) {
+                u64 val = nr64_ipp(reg);
+
+                if (!(val & bits))
+                        break;
+                udelay(delay);
+        }
+        if (limit < 0)
+                return -ENODEV;
+        return 0;
+}
+
+static int __niu_set_and_wait_clear_ipp(struct niu *np, unsigned long reg,
+                                        u64 bits, int limit, int delay,
+                                        const char *reg_name)
+{
+        int err;
+        u64 val;
+
+        val = nr64_ipp(reg);
+        val |= bits;
+        nw64_ipp(reg, val);
+
+        err = __niu_wait_bits_clear_ipp(np, reg, bits, limit, delay);
+        if (err)
+                dev_err(np->device, PFX "%s: bits (%llx) of register %s "
+                        "would not clear, val[%llx]\n",
+                        np->dev->name, (unsigned long long) bits, reg_name,
+                        (unsigned long long) nr64_ipp(reg));
+        return err;
+}
+
+#define niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
+({      BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
+        __niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
+})
+
+static int __niu_wait_bits_clear(struct niu *np, unsigned long reg,
+                                 u64 bits, int limit, int delay)
+{
+        while (--limit >= 0) {
+                u64 val = nr64(reg);
+
+                if (!(val & bits))
+                        break;
+                udelay(delay);
+        }
+        if (limit < 0)
+                return -ENODEV;
+        return 0;
+}
+
+#define niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY) \
+({      BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
+        __niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY); \
+})
+
+static int __niu_set_and_wait_clear(struct niu *np, unsigned long reg,
+                                    u64 bits, int limit, int delay,
+                                    const char *reg_name)
+{
+        int err;
+
+        nw64(reg, bits);
+        err = __niu_wait_bits_clear(np, reg, bits, limit, delay);
+        if (err)
+                dev_err(np->device, PFX "%s: bits (%llx) of register %s "
+                        "would not clear, val[%llx]\n",
+                        np->dev->name, (unsigned long long) bits, reg_name,
+                        (unsigned long long) nr64(reg));
+        return err;
+}
+
+#define niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
+({      BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
+        __niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
+})
+
+static void niu_ldg_rearm(struct niu *np, struct niu_ldg *lp, int on)
+{
+        u64 val = (u64) lp->timer;
+
+        if (on)
+                val |= LDG_IMGMT_ARM;
+
+        nw64(LDG_IMGMT(lp->ldg_num), val);
+}
+
+static int niu_ldn_irq_enable(struct niu *np, int ldn, int on)
+{
+        unsigned long mask_reg, bits;
+        u64 val;
+
+        if (ldn < 0 || ldn > LDN_MAX)
+                return -EINVAL;
+
+        if (ldn < 64) {
+                mask_reg = LD_IM0(ldn);
+                bits = LD_IM0_MASK;
+        } else {
+                mask_reg = LD_IM1(ldn - 64);
+                bits = LD_IM1_MASK;
+        }
+
+        val = nr64(mask_reg);
+        if (on)
+                val &= ~bits;
+        else
+                val |= bits;
+        nw64(mask_reg, val);
+
+        return 0;
+}
+
+static int niu_enable_ldn_in_ldg(struct niu *np, struct niu_ldg *lp, int on)
+{
+        struct niu_parent *parent = np->parent;
+        int i;
+
+        for (i = 0; i <= LDN_MAX; i++) {
+                int err;
+
+                if (parent->ldg_map[i] != lp->ldg_num)
+                        continue;
+
+                err = niu_ldn_irq_enable(np, i, on);
+                if (err)
+                        return err;
+        }
+        return 0;
+}
+
+static int niu_enable_interrupts(struct niu *np, int on)
+{
+        int i;
+
+        for (i = 0; i < np->num_ldg; i++) {
+                struct niu_ldg *lp = &np->ldg[i];
+                int err;
+
+                err = niu_enable_ldn_in_ldg(np, lp, on);
+                if (err)
+                        return err;
+        }
+        for (i = 0; i < np->num_ldg; i++)
+                niu_ldg_rearm(np, &np->ldg[i], on);
+
+        return 0;
+}
+
+static u32 phy_encode(u32 type, int port)
+{
+        return (type << (port * 2));
+}
+
+static u32 phy_decode(u32 val, int port)
+{
+        return (val >> (port * 2)) & PORT_TYPE_MASK;
+}
+
+static int mdio_wait(struct niu *np)
+{
+        int limit = 1000;
+        u64 val;
+
+        while (--limit > 0) {
+                val = nr64(MIF_FRAME_OUTPUT);
+                if ((val >> MIF_FRAME_OUTPUT_TA_SHIFT) & 0x1)
+                        return val & MIF_FRAME_OUTPUT_DATA;
+
+                udelay(10);
+        }
+
+        return -ENODEV;
+}
+
+static int mdio_read(struct niu *np, int port, int dev, int reg)
+{
+        int err;
+
+        nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
+        err = mdio_wait(np);
+        if (err < 0)
+                return err;
+
+        nw64(MIF_FRAME_OUTPUT, MDIO_READ_OP(port, dev));
+        return mdio_wait(np);
+}
+
+static int mdio_write(struct niu *np, int port, int dev, int reg, int data)
+{
+        int err;
+
+        nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
+        err = mdio_wait(np);
+        if (err < 0)
+                return err;
+
+        nw64(MIF_FRAME_OUTPUT, MDIO_WRITE_OP(port, dev, data));
+        err = mdio_wait(np);
+        if (err < 0)
+                return err;
+
+        return 0;
+}
+
+static int mii_read(struct niu *np, int port, int reg)
+{
+        nw64(MIF_FRAME_OUTPUT, MII_READ_OP(port, reg));
+        return mdio_wait(np);
+}
+
+static int mii_write(struct niu *np, int port, int reg, int data)
+{
+        int err;
+
+        nw64(MIF_FRAME_OUTPUT, MII_WRITE_OP(port, reg, data));
+        err = mdio_wait(np);
+        if (err < 0)
+                return err;
+
+        return 0;
+}
+
+static int esr2_set_tx_cfg(struct niu *np, unsigned long channel, u32 val)
+{
+        int err;
+
+        err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
+                         ESR2_TI_PLL_TX_CFG_L(channel),
+                         val & 0xffff);
+        if (!err)
+                err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
+                                 ESR2_TI_PLL_TX_CFG_H(channel),
+                                 val >> 16);
+        return err;
+}
+
+static int esr2_set_rx_cfg(struct niu *np, unsigned long channel, u32 val)
+{
+        int err;
+
+        err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
+                         ESR2_TI_PLL_RX_CFG_L(channel),
+                         val & 0xffff);
+        if (!err)
+                err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
+                                 ESR2_TI_PLL_RX_CFG_H(channel),
+                                 val >> 16);
+        return err;
+}
+
+/* Mode is always 10G fiber.  */
+static int serdes_init_niu(struct niu *np)
+{
+        struct niu_link_config *lp = &np->link_config;
+        u32 tx_cfg, rx_cfg;
+        unsigned long i;
+
+        tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV);
+        rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
+                  PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
+                  PLL_RX_CFG_EQ_LP_ADAPTIVE);
+
+        if (lp->loopback_mode == LOOPBACK_PHY) {
+                u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
+
+                mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
+                           ESR2_TI_PLL_TEST_CFG_L, test_cfg);
+
+                tx_cfg |= PLL_TX_CFG_ENTEST;
+                rx_cfg |= PLL_RX_CFG_ENTEST;
+        }
+
+        /* Initialize all 4 lanes of the SERDES.  */
+        for (i = 0; i < 4; i++) {
+                int err = esr2_set_tx_cfg(np, i, tx_cfg);
+                if (err)
+                        return err;
+        }
+
+        for (i = 0; i < 4; i++) {
+                int err = esr2_set_rx_cfg(np, i, rx_cfg);
+                if (err)
+                        return err;
+        }
+
+        return 0;
+}
+
+static int esr_read_rxtx_ctrl(struct niu *np, unsigned long chan, u32 *val)
+{
+        int err;
+
+        err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR, ESR_RXTX_CTRL_L(chan));
+        if (err >= 0) {
+                *val = (err & 0xffff);
+                err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
+                                ESR_RXTX_CTRL_H(chan));
+                if (err >= 0)
+                        *val |= ((err & 0xffff) << 16);
+                err = 0;
+        }
+        return err;
+}
+
+static int esr_read_glue0(struct niu *np, unsigned long chan, u32 *val)
+{
+        int err;
+
+        err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
+                        ESR_GLUE_CTRL0_L(chan));
+        if (err >= 0) {
+                *val = (err & 0xffff);
+                err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
+                                ESR_GLUE_CTRL0_H(chan));
+                if (err >= 0) {
+                        *val |= ((err & 0xffff) << 16);
+                        err = 0;
+                }
+        }
+        return err;
+}
+
+static int esr_read_reset(struct niu *np, u32 *val)
+{
+        int err;
+
+        err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
+                        ESR_RXTX_RESET_CTRL_L);
+        if (err >= 0) {
+                *val = (err & 0xffff);
+                err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
+                                ESR_RXTX_RESET_CTRL_H);
+                if (err >= 0) {
+                        *val |= ((err & 0xffff) << 16);
+                        err = 0;
+                }
+        }
+        return err;
+}
+
+static int esr_write_rxtx_ctrl(struct niu *np, unsigned long chan, u32 val)
+{
+        int err;
+
+        err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
+                         ESR_RXTX_CTRL_L(chan), val & 0xffff);
+        if (!err)
+                err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
+                                 ESR_RXTX_CTRL_H(chan), (val >> 16));
+        return err;
+}
+
+static int esr_write_glue0(struct niu *np, unsigned long chan, u32 val)
+{
+        int err;
+
+        err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
+                        ESR_GLUE_CTRL0_L(chan), val & 0xffff);
+        if (!err)
+                err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
+                                 ESR_GLUE_CTRL0_H(chan), (val >> 16));
+        return err;
+}
+
+static int esr_reset(struct niu *np)
+{
+        u32 reset;
+        int err;
+
+        err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
+                         ESR_RXTX_RESET_CTRL_L, 0x0000);
+        if (err)
+                return err;
+        err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
+                         ESR_RXTX_RESET_CTRL_H, 0xffff);
+        if (err)
+                return err;
+        udelay(200);
+
+        err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
+                         ESR_RXTX_RESET_CTRL_L, 0xffff);
+        if (err)
+                return err;
+        udelay(200);
+
+        err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
+                         ESR_RXTX_RESET_CTRL_H, 0x0000);
+        if (err)
+                return err;
+        udelay(200);
+
+        err = esr_read_reset(np, &reset);
+        if (err)
+                return err;
+        if (reset != 0) {
+                dev_err(np->device, PFX "Port %u ESR_RESET "
+                        "did not clear [%08x]\n",
+                        np->port, reset);
+                return -ENODEV;
+        }
+
+        return 0;
+}
+
+static int serdes_init_10g(struct niu *np)
+{
+        struct niu_link_config *lp = &np->link_config;
+        unsigned long ctrl_reg, test_cfg_reg, i;
+        u64 ctrl_val, test_cfg_val, sig, mask, val;
+        int err;
+
+        switch (np->port) {
+        case 0:
+                ctrl_reg = ENET_SERDES_0_CTRL_CFG;
+                test_cfg_reg = ENET_SERDES_0_TEST_CFG;
+                break;
+        case 1:
+                ctrl_reg = ENET_SERDES_1_CTRL_CFG;
+                test_cfg_reg = ENET_SERDES_1_TEST_CFG;
+                break;
+
+        default:
+                return -EINVAL;
+        }
+        ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
+                    ENET_SERDES_CTRL_SDET_1 |
+                    ENET_SERDES_CTRL_SDET_2 |
+                    ENET_SERDES_CTRL_SDET_3 |
+                    (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
+                    (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
+                    (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
+                    (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
+                    (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
+                    (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
+                    (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
+                    (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
+        test_cfg_val = 0;
+
+        if (lp->loopback_mode == LOOPBACK_PHY) {
+                test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
+                                  ENET_SERDES_TEST_MD_0_SHIFT) |
+                                 (ENET_TEST_MD_PAD_LOOPBACK <<
+                                  ENET_SERDES_TEST_MD_1_SHIFT) |
+                                 (ENET_TEST_MD_PAD_LOOPBACK <<
+                                  ENET_SERDES_TEST_MD_2_SHIFT) |
+                                 (ENET_TEST_MD_PAD_LOOPBACK <<
+                                  ENET_SERDES_TEST_MD_3_SHIFT));
+        }
+
+        nw64(ctrl_reg, ctrl_val);
+        nw64(test_cfg_reg, test_cfg_val);
+
+        /* Initialize all 4 lanes of the SERDES.  */
+        for (i = 0; i < 4; i++) {
+                u32 rxtx_ctrl, glue0;
+
+                err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
+                if (err)
+                        return err;
+                err = esr_read_glue0(np, i, &glue0);
+                if (err)
+                        return err;
+
+                rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
+                rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
+                              (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
+
+                glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
+                           ESR_GLUE_CTRL0_THCNT |
+                           ESR_GLUE_CTRL0_BLTIME);
+                glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
+                          (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
+                          (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
+                          (BLTIME_300_CYCLES <<
+                           ESR_GLUE_CTRL0_BLTIME_SHIFT));
+
+                err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
+                if (err)
+                        return err;
+                err = esr_write_glue0(np, i, glue0);
+                if (err)
+                        return err;
+        }
+
+        err = esr_reset(np);
+        if (err)
+                return err;
+
+        sig = nr64(ESR_INT_SIGNALS);
+        switch (np->port) {
+        case 0:
+                mask = ESR_INT_SIGNALS_P0_BITS;
+                val = (ESR_INT_SRDY0_P0 |
+                       ESR_INT_DET0_P0 |
+                       ESR_INT_XSRDY_P0 |
+                       ESR_INT_XDP_P0_CH3 |
+                       ESR_INT_XDP_P0_CH2 |
+                       ESR_INT_XDP_P0_CH1 |
+                       ESR_INT_XDP_P0_CH0);
+                break;
+
+        case 1:
+                mask = ESR_INT_SIGNALS_P1_BITS;
+                val = (ESR_INT_SRDY0_P1 |
+                       ESR_INT_DET0_P1 |
+                       ESR_INT_XSRDY_P1 |
+                       ESR_INT_XDP_P1_CH3 |
+                       ESR_INT_XDP_P1_CH2 |
+                       ESR_INT_XDP_P1_CH1 |
+                       ESR_INT_XDP_P1_CH0);
+                break;
+
+        default:
+                return -EINVAL;
+        }
+
+        if ((sig & mask) != val) {
+                dev_err(np->device, PFX "Port %u signal bits [%08x] are not "
+                        "[%08x]\n", np->port, (int) (sig & mask), (int) val);
+                return -ENODEV;
+        }
+
+        return 0;
+}
+
+static int serdes_init_1g(struct niu *np)
+{
+        u64 val;
+
+        val = nr64(ENET_SERDES_1_PLL_CFG);
+        val &= ~ENET_SERDES_PLL_FBDIV2;
+        switch (np->port) {
+        case 0:
+                val |= ENET_SERDES_PLL_HRATE0;
+                break;
+        case 1:
+                val |= ENET_SERDES_PLL_HRATE1;
+                break;
+        case 2:
+                val |= ENET_SERDES_PLL_HRATE2;
+                break;
+        case 3:
+                val |= ENET_SERDES_PLL_HRATE3;
+                break;
+        default:
+                return -EINVAL;
+        }
+        nw64(ENET_SERDES_1_PLL_CFG, val);
+
+        return 0;
+}
+
+static int bcm8704_reset(struct niu *np)
+{
+        int err, limit;
+
+        err = mdio_read(np, np->phy_addr,
+                        BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
+        if (err < 0)
+                return err;
+        err |= BMCR_RESET;
+        err = mdio_write(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
+                         MII_BMCR, err);
+        if (err)
+                return err;
+
+        limit = 1000;
+        while (--limit >= 0) {
+                err = mdio_read(np, np->phy_addr,
+                                BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
+                if (err < 0)
+                        return err;
+                if (!(err & BMCR_RESET))
+                        break;
+        }
+        if (limit < 0) {
+                dev_err(np->device, PFX "Port %u PHY will not reset "
+                        "(bmcr=%04x)\n", np->port, (err & 0xffff));
+                return -ENODEV;
+        }
+        return 0;
+}
+
+/* When written, certain PHY registers need to be read back twice
+ * in order for the bits to settle properly.
+ */
+static int bcm8704_user_dev3_readback(struct niu *np, int reg)
+{
+        int err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
+        if (err < 0)
+                return err;
+        err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
+        if (err < 0)
+                return err;
+        return 0;
+}
+
+static int bcm8704_init_user_dev3(struct niu *np)
+{
+        int err;
+
+        err = mdio_write(np, np->phy_addr,
+                         BCM8704_USER_DEV3_ADDR, BCM8704_USER_CONTROL,
+                         (USER_CONTROL_OPTXRST_LVL |
+                          USER_CONTROL_OPBIASFLT_LVL |
+                          USER_CONTROL_OBTMPFLT_LVL |
+                          USER_CONTROL_OPPRFLT_LVL |
+                          USER_CONTROL_OPTXFLT_LVL |
+                          USER_CONTROL_OPRXLOS_LVL |
+                          USER_CONTROL_OPRXFLT_LVL |
+                          USER_CONTROL_OPTXON_LVL |
+                          (0x3f << USER_CONTROL_RES1_SHIFT)));
+        if (err)
+                return err;
+
+        err = mdio_write(np, np->phy_addr,
+                         BCM8704_USER_DEV3_ADDR, BCM8704_USER_PMD_TX_CONTROL,
+                         (USER_PMD_TX_CTL_XFP_CLKEN |
+                          (1 << USER_PMD_TX_CTL_TX_DAC_TXD_SH) |
+                          (2 << USER_PMD_TX_CTL_TX_DAC_TXCK_SH) |
+                          USER_PMD_TX_CTL_TSCK_LPWREN));
+        if (err)
+                return err;
+
+        err = bcm8704_user_dev3_readback(np, BCM8704_USER_CONTROL);
+        if (err)
+                return err;
+        err = bcm8704_user_dev3_readback(np, BCM8704_USER_PMD_TX_CONTROL);
+        if (err)
+                return err;
+
+        err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
+                        BCM8704_USER_OPT_DIGITAL_CTRL);
+        if (err < 0)
+                return err;
+        err &= ~USER_ODIG_CTRL_GPIOS;
+        err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
+        err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
+                         BCM8704_USER_OPT_DIGITAL_CTRL, err);
+        if (err)
+                return err;
+
+        mdelay(1000);
+
+        return 0;
+}
+
+static int xcvr_init_10g(struct niu *np)
+{
+        struct niu_link_config *lp = &np->link_config;
+        u16 analog_stat0, tx_alarm_status;
+        int err;
+        u64 val;
+
+        val = nr64_mac(XMAC_CONFIG);
+        val &= ~XMAC_CONFIG_LED_POLARITY;
+        val |= XMAC_CONFIG_FORCE_LED_ON;
+        nw64_mac(XMAC_CONFIG, val);
+
+        /* XXX shared resource, lock parent XXX */
+        val = nr64(MIF_CONFIG);
+        val |= MIF_CONFIG_INDIRECT_MODE;
+        nw64(MIF_CONFIG, val);
+
+        err = bcm8704_reset(np);
+        if (err)
+                return err;
+
+        err = bcm8704_init_user_dev3(np);
+        if (err)
+                return err;
+
+        err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
+                        MII_BMCR);
+        if (err < 0)
+                return err;
+        err &= ~BMCR_LOOPBACK;
+
+        if (lp->loopback_mode == LOOPBACK_MAC)
+                err |= BMCR_LOOPBACK;
+
+        err = mdio_write(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
+                         MII_BMCR, err);
+        if (err)
+                return err;
+
+#if 1
+        err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
+                        MII_STAT1000);
+        if (err < 0)
+                return err;
+        pr_info(PFX "Port %u PMA_PMD(MII_STAT1000) [%04x]\n",
+                np->port, err);
+
+        err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, 0x20);
+        if (err < 0)
+                return err;
+        pr_info(PFX "Port %u USER_DEV3(0x20) [%04x]\n",
+                np->port, err);
+
+        err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
+                        MII_NWAYTEST);
+        if (err < 0)
+                return err;
+        pr_info(PFX "Port %u PHYXS(MII_NWAYTEST) [%04x]\n",
+                np->port, err);
+#endif
+
+        /* XXX dig this out it might not be so useful XXX */
+        err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
+                        BCM8704_USER_ANALOG_STATUS0);
+        if (err < 0)
+                return err;
+        err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
+                        BCM8704_USER_ANALOG_STATUS0);
+        if (err < 0)
+                return err;
+        analog_stat0 = err;
+
+        err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
+                        BCM8704_USER_TX_ALARM_STATUS);
+        if (err < 0)
+                return err;
+        err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
+                        BCM8704_USER_TX_ALARM_STATUS);
+        if (err < 0)
+                return err;
+        tx_alarm_status = err;
+
+        if (analog_stat0 != 0x03fc) {
+                if ((analog_stat0 == 0x43bc) && (tx_alarm_status != 0)) {
+                        pr_info(PFX "Port %u cable not connected "
+                                "or bad cable.\n", np->port);
+                } else if (analog_stat0 == 0x639c) {
+                        pr_info(PFX "Port %u optical module is bad "
+                                "or missing.\n", np->port);
+                }
+        }
+
+        return 0;
+}
+
+static int mii_reset(struct niu *np)
+{
+        int limit, err;
+
+        err = mii_write(np, np->phy_addr, MII_BMCR, BMCR_RESET);
+        if (err)
+                return err;
+
+        limit = 1000;
+        while (--limit >= 0) {
+                udelay(500);
+                err = mii_read(np, np->phy_addr, MII_BMCR);
+                if (err < 0)
+                        return err;
+                if (!(err & BMCR_RESET))
+                        break;
+        }
+        if (limit < 0) {
+                dev_err(np->device, PFX "Port %u MII would not reset, "
+                        "bmcr[%04x]\n", np->port, err);
+                return -ENODEV;
+        }
+
+        return 0;
+}
+
+static int mii_init_common(struct niu *np)
+{
+        struct niu_link_config *lp = &np->link_config;
+        u16 bmcr, bmsr, adv, estat;
+        int err;
+
+        err = mii_reset(np);
+        if (err)
+                return err;
+
+        err = mii_read(np, np->phy_addr, MII_BMSR);
+        if (err < 0)
+                return err;
+        bmsr = err;
+
+        estat = 0;
+        if (bmsr & BMSR_ESTATEN) {
+                err = mii_read(np, np->phy_addr, MII_ESTATUS);
+                if (err < 0)
+                        return err;
+                estat = err;
+        }
+
+        bmcr = 0;
+        err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
+        if (err)
+                return err;
+
+        if (lp->loopback_mode == LOOPBACK_MAC) {
+                bmcr |= BMCR_LOOPBACK;
+                if (lp->active_speed == SPEED_1000)
+                        bmcr |= BMCR_SPEED1000;
+                if (lp->active_duplex == DUPLEX_FULL)
+                        bmcr |= BMCR_FULLDPLX;
+        }
+
+        if (lp->loopback_mode == LOOPBACK_PHY) {
+                u16 aux;
+
+                aux = (BCM5464R_AUX_CTL_EXT_LB |
+                       BCM5464R_AUX_CTL_WRITE_1);
+                err = mii_write(np, np->phy_addr, BCM5464R_AUX_CTL, aux);
+                if (err)
+                        return err;
+        }
+
+        /* XXX configurable XXX */
+        /* XXX for now don't advertise half-duplex or asym pause... XXX */
+        adv = ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP;
+        if (bmsr & BMSR_10FULL)
+                adv |= ADVERTISE_10FULL;
+        if (bmsr & BMSR_100FULL)
+                adv |= ADVERTISE_100FULL;
+        err = mii_write(np, np->phy_addr, MII_ADVERTISE, adv);
+        if (err)
+                return err;
+
+        if (bmsr & BMSR_ESTATEN) {
+                u16 ctrl1000 = 0;
+
+                if (estat & ESTATUS_1000_TFULL)
+                        ctrl1000 |= ADVERTISE_1000FULL;
+                err = mii_write(np, np->phy_addr, MII_CTRL1000, ctrl1000);
+                if (err)
+                        return err;
+        }
+        bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
+
+        err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
+        if (err)
+                return err;
+
+        err = mii_read(np, np->phy_addr, MII_BMCR);
+        if (err < 0)
+                return err;
+        err = mii_read(np, np->phy_addr, MII_BMSR);
+        if (err < 0)
+                return err;
+#if 0
+        pr_info(PFX "Port %u after MII init bmcr[%04x] bmsr[%04x]\n",
+                np->port, bmcr, bmsr);
+#endif
+
+        return 0;
+}
+
+static int xcvr_init_1g(struct niu *np)
+{
+        u64 val;
+
+        /* XXX shared resource, lock parent XXX */
+        val = nr64(MIF_CONFIG);
+        val &= ~MIF_CONFIG_INDIRECT_MODE;
+        nw64(MIF_CONFIG, val);
+
+        return mii_init_common(np);
+}
+
+static int niu_xcvr_init(struct niu *np)
+{
+        const struct niu_phy_ops *ops = np->phy_ops;
+        int err;
+
+        err = 0;
+        if (ops->xcvr_init)
+                err = ops->xcvr_init(np);
+
+        return err;
+}
+
+static int niu_serdes_init(struct niu *np)
+{
+        const struct niu_phy_ops *ops = np->phy_ops;
+        int err;
+
+        err = 0;
+        if (ops->serdes_init)
+                err = ops->serdes_init(np);
+
+        return err;
+}
+
+static void niu_init_xif(struct niu *);
+
+static int niu_link_status_common(struct niu *np, int link_up)
+{
+        struct niu_link_config *lp = &np->link_config;
+        struct net_device *dev = np->dev;
+        unsigned long flags;
+
+        if (!netif_carrier_ok(dev) && link_up) {
+                niuinfo(LINK, "%s: Link is up at %s, %s duplex\n",
+                       dev->name,
+                       (lp->active_speed == SPEED_10000 ?
+                        "10Gb/sec" :
+                        (lp->active_speed == SPEED_1000 ?
+                         "1Gb/sec" :
+                         (lp->active_speed == SPEED_100 ?
+                          "100Mbit/sec" : "10Mbit/sec"))),
+                       (lp->active_duplex == DUPLEX_FULL ?
+                        "full" : "half"));
+
+                spin_lock_irqsave(&np->lock, flags);
+                niu_init_xif(np);
+                spin_unlock_irqrestore(&np->lock, flags);
+
+                netif_carrier_on(dev);
+        } else if (netif_carrier_ok(dev) && !link_up) {
+                niuwarn(LINK, "%s: Link is down\n", dev->name);
+                netif_carrier_off(dev);
+        }
+
+        return 0;
+}
+
+static int link_status_10g(struct niu *np, int *link_up_p)
+{
+        unsigned long flags;
+        int err, link_up;
+
+        link_up = 0;
+
+        spin_lock_irqsave(&np->lock, flags);
+
+        err = -EINVAL;
+        if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
+                goto out;
+
+        err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
+                        BCM8704_PMD_RCV_SIGDET);
+        if (err < 0)
+                goto out;
+        if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
+                err = 0;
+                goto out;
+        }
+
+        err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
+                        BCM8704_PCS_10G_R_STATUS);
+        if (err < 0)
+                goto out;
+        if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
+                err = 0;
+                goto out;
+        }
+
+        err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
+                        BCM8704_PHYXS_XGXS_LANE_STAT);
+        if (err < 0)
+                goto out;
+
+        if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
+                    PHYXS_XGXS_LANE_STAT_MAGIC |
+                    PHYXS_XGXS_LANE_STAT_LANE3 |
+                    PHYXS_XGXS_LANE_STAT_LANE2 |
+                    PHYXS_XGXS_LANE_STAT_LANE1 |
+                    PHYXS_XGXS_LANE_STAT_LANE0)) {
+                err = 0;
+                goto out;
+        }
+
+        link_up = 1;
+        np->link_config.active_speed = SPEED_10000;
+        np->link_config.active_duplex = DUPLEX_FULL;
+        err = 0;
+
+out:
+        spin_unlock_irqrestore(&np->lock, flags);
+
+        *link_up_p = link_up;
+        return err;
+}
+
+static int link_status_1g(struct niu *np, int *link_up_p)
+{
+        u16 current_speed, bmsr;
+        unsigned long flags;
+        u8 current_duplex;
+        int err, link_up;
+
+        link_up = 0;
+        current_speed = SPEED_INVALID;
+        current_duplex = DUPLEX_INVALID;
+
+        spin_lock_irqsave(&np->lock, flags);
+
+        err = -EINVAL;
+        if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
+                goto out;
+
+        err = mii_read(np, np->phy_addr, MII_BMSR);
+        if (err < 0)
+                goto out;
+
+        bmsr = err;
+        if (bmsr & BMSR_LSTATUS) {
+                u16 adv, lpa, common, estat;
+
+                err = mii_read(np, np->phy_addr, MII_ADVERTISE);
+                if (err < 0)
+                        goto out;
+                adv = err;
+
+                err = mii_read(np, np->phy_addr, MII_LPA);
+                if (err < 0)
+                        goto out;
+                lpa = err;
+
+                common = adv & lpa;
+
+                err = mii_read(np, np->phy_addr, MII_ESTATUS);
+                if (err < 0)
+                        goto out;
+                estat = err;
+
+                link_up = 1;
+                if (estat & (ESTATUS_1000_TFULL | ESTATUS_1000_THALF)) {
+                        current_speed = SPEED_1000;
+                        if (estat & ESTATUS_1000_TFULL)
+                                current_duplex = DUPLEX_FULL;
+                        else
+                                current_duplex = DUPLEX_HALF;
+                } else {
+                        if (common & ADVERTISE_100BASE4) {
+                                current_speed = SPEED_100;
+                                current_duplex = DUPLEX_HALF;
+                        } else if (common & ADVERTISE_100FULL) {
+                                current_speed = SPEED_100;
+                                current_duplex = DUPLEX_FULL;
+                        } else if (common & ADVERTISE_100HALF) {
+                                current_speed = SPEED_100;
+                                current_duplex = DUPLEX_HALF;
+                        } else if (common & ADVERTISE_10FULL) {
+                                current_speed = SPEED_10;
+                                current_duplex = DUPLEX_FULL;
+                        } else if (common & ADVERTISE_10HALF) {
+                                current_speed = SPEED_10;
+                                current_duplex = DUPLEX_HALF;
+                        } else
+                                link_up = 0;
+                }
+        }
+        err = 0;
+
+out:
+        spin_unlock_irqrestore(&np->lock, flags);
+
+        *link_up_p = link_up;
+        return err;
+}
+
+static int niu_link_status(struct niu *np, int *link_up_p)
+{
+        const struct niu_phy_ops *ops = np->phy_ops;
+        int err;
+
+        err = 0;
+        if (ops->link_status)
+                err = ops->link_status(np, link_up_p);
+
+        return err;
+}
+
+static void niu_timer(unsigned long __opaque)
+{
+        struct niu *np = (struct niu *) __opaque;
+        unsigned long off;
+        int err, link_up;
+
+        err = niu_link_status(np, &link_up);
+        if (!err)
+                niu_link_status_common(np, link_up);
+
+        if (netif_carrier_ok(np->dev))
+                off = 5 * HZ;
+        else
+                off = 1 * HZ;
+        np->timer.expires = jiffies + off;
+
+        add_timer(&np->timer);
+}
+
+static const struct niu_phy_ops phy_ops_10g_fiber_niu = {
+        .serdes_init            = serdes_init_niu,
+        .xcvr_init              = xcvr_init_10g,
+        .link_status            = link_status_10g,
+};
+
+static const struct niu_phy_ops phy_ops_10g_fiber = {
+        .serdes_init            = serdes_init_10g,
+        .xcvr_init              = xcvr_init_10g,
+        .link_status            = link_status_10g,
+};
+
+static const struct niu_phy_ops phy_ops_10g_copper = {
+        .serdes_init            = serdes_init_10g,
+        .link_status            = link_status_10g, /* XXX */
+};
+
+static const struct niu_phy_ops phy_ops_1g_fiber = {
+        .serdes_init            = serdes_init_1g,
+        .xcvr_init              = xcvr_init_1g,
+        .link_status            = link_status_1g,
+};
+
+static const struct niu_phy_ops phy_ops_1g_copper = {
+        .xcvr_init              = xcvr_init_1g,
+        .link_status            = link_status_1g,
+};
+
+struct niu_phy_template {
+        const struct niu_phy_ops        *ops;
+        u32                             phy_addr_base;
+};
+
+static const struct niu_phy_template phy_template_niu = {
+        .ops            = &phy_ops_10g_fiber_niu,
+        .phy_addr_base  = 16,
+};
+
+static const struct niu_phy_template phy_template_10g_fiber = {
+        .ops            = &phy_ops_10g_fiber,
+        .phy_addr_base  = 8,
+};
+
+static const struct niu_phy_template phy_template_10g_copper = {
+        .ops            = &phy_ops_10g_copper,
+        .phy_addr_base  = 10,
+};
+
+static const struct niu_phy_template phy_template_1g_fiber = {
+        .ops            = &phy_ops_1g_fiber,
+        .phy_addr_base  = 0,
+};
+
+static const struct niu_phy_template phy_template_1g_copper = {
+        .ops            = &phy_ops_1g_copper,
+        .phy_addr_base  = 0,
+};
+
+static int niu_determine_phy_disposition(struct niu *np)
+{
+        struct niu_parent *parent = np->parent;
+        u8 plat_type = parent->plat_type;
+        const struct niu_phy_template *tp;
+        u32 phy_addr_off = 0;
+
+        if (plat_type == PLAT_TYPE_NIU) {
+                tp = &phy_template_niu;
+                phy_addr_off += np->port;
+        } else {
+                switch (np->flags & (NIU_FLAGS_10G | NIU_FLAGS_FIBER)) {
+                case 0:
+                        /* 1G copper */
+                        tp = &phy_template_1g_copper;
+                        if (plat_type == PLAT_TYPE_VF_P0)
+                                phy_addr_off = 10;
+                        else if (plat_type == PLAT_TYPE_VF_P1)
+                                phy_addr_off = 26;
+
+                        phy_addr_off += (np->port ^ 0x3);
+                        break;
+
+                case NIU_FLAGS_10G:
+                        /* 10G copper */
+                        tp = &phy_template_1g_copper;
+                        break;
+
+                case NIU_FLAGS_FIBER:
+                        /* 1G fiber */
+                        tp = &phy_template_1g_fiber;
+                        break;
+
+                case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
+                        /* 10G fiber */
+                        tp = &phy_template_10g_fiber;
+                        if (plat_type == PLAT_TYPE_VF_P0 ||
+                            plat_type == PLAT_TYPE_VF_P1)
+                                phy_addr_off = 8;
+                        phy_addr_off += np->port;
+                        break;
+
+                default:
+                        return -EINVAL;
+                }
+        }
+
+        np->phy_ops = tp->ops;
+        np->phy_addr = tp->phy_addr_base + phy_addr_off;
+
+        return 0;
+}
+
+static int niu_init_link(struct niu *np)
+{
+        struct niu_parent *parent = np->parent;
+        int err, ignore;
+
+        if (parent->plat_type == PLAT_TYPE_NIU) {
+                err = niu_xcvr_init(np);
+                if (err)
+                        return err;
+                msleep(200);
+        }
+        err = niu_serdes_init(np);
+        if (err)
+                return err;
+        msleep(200);
+        err = niu_xcvr_init(np);
+        if (!err)
+                niu_link_status(np, &ignore);
+        return 0;
+}
+
+static void niu_set_primary_mac(struct niu *np, unsigned char *addr)
+{
+        u16 reg0 = addr[4] << 8 | addr[5];
+        u16 reg1 = addr[2] << 8 | addr[3];
+        u16 reg2 = addr[0] << 8 | addr[1];
+
+        if (np->flags & NIU_FLAGS_XMAC) {
+                nw64_mac(XMAC_ADDR0, reg0);
+                nw64_mac(XMAC_ADDR1, reg1);
+                nw64_mac(XMAC_ADDR2, reg2);
+        } else {
+                nw64_mac(BMAC_ADDR0, reg0);
+                nw64_mac(BMAC_ADDR1, reg1);
+                nw64_mac(BMAC_ADDR2, reg2);
+        }
+}
+
+static int niu_num_alt_addr(struct niu *np)
+{
+        if (np->flags & NIU_FLAGS_XMAC)
+                return XMAC_NUM_ALT_ADDR;
+        else
+                return BMAC_NUM_ALT_ADDR;
+}
+
+static int niu_set_alt_mac(struct niu *np, int index, unsigned char *addr)
+{
+        u16 reg0 = addr[4] << 8 | addr[5];
+        u16 reg1 = addr[2] << 8 | addr[3];
+        u16 reg2 = addr[0] << 8 | addr[1];
+
+        if (index >= niu_num_alt_addr(np))
+                return -EINVAL;
+
+        if (np->flags & NIU_FLAGS_XMAC) {
+                nw64_mac(XMAC_ALT_ADDR0(index), reg0);
+                nw64_mac(XMAC_ALT_ADDR1(index), reg1);
+                nw64_mac(XMAC_ALT_ADDR2(index), reg2);
+        } else {
+                nw64_mac(BMAC_ALT_ADDR0(index), reg0);
+                nw64_mac(BMAC_ALT_ADDR1(index), reg1);
+                nw64_mac(BMAC_ALT_ADDR2(index), reg2);
+        }
+
+        return 0;
+}
+
+static int niu_enable_alt_mac(struct niu *np, int index, int on)
+{
+        unsigned long reg;
+        u64 val, mask;
+
+        if (index >= niu_num_alt_addr(np))
+                return -EINVAL;
+
+        if (np->flags & NIU_FLAGS_XMAC)
+                reg = XMAC_ADDR_CMPEN;
+        else
+                reg = BMAC_ADDR_CMPEN;
+
+        mask = 1 << index;
+
+        val = nr64_mac(reg);
+        if (on)
+                val |= mask;
+        else
+                val &= ~mask;
+        nw64_mac(reg, val);
+
+        return 0;
+}
+
+static void __set_rdc_table_num_hw(struct niu *np, unsigned long reg,
+                                   int num, int mac_pref)
+{
+        u64 val = nr64_mac(reg);
+        val &= ~(HOST_INFO_MACRDCTBLN | HOST_INFO_MPR);
+        val |= num;
+        if (mac_pref)
+                val |= HOST_INFO_MPR;
+        nw64_mac(reg, val);
+}
+
+static int __set_rdc_table_num(struct niu *np,
+                               int xmac_index, int bmac_index,
+                               int rdc_table_num, int mac_pref)
+{
+        unsigned long reg;
+
+        if (rdc_table_num & ~HOST_INFO_MACRDCTBLN)
+                return -EINVAL;
+        if (np->flags & NIU_FLAGS_XMAC)
+                reg = XMAC_HOST_INFO(xmac_index);
+        else
+                reg = BMAC_HOST_INFO(bmac_index);
+        __set_rdc_table_num_hw(np, reg, rdc_table_num, mac_pref);
+        return 0;
+}
+
+static int niu_set_primary_mac_rdc_table(struct niu *np, int table_num,
+                                         int mac_pref)
+{
+        return __set_rdc_table_num(np, 17, 0, table_num, mac_pref);
+}
+
+static int niu_set_multicast_mac_rdc_table(struct niu *np, int table_num,
+                                           int mac_pref)
+{
+        return __set_rdc_table_num(np, 16, 8, table_num, mac_pref);
+}
+
+static int niu_set_alt_mac_rdc_table(struct niu *np, int idx,
+                                     int table_num, int mac_pref)
+{
+        if (idx >= niu_num_alt_addr(np))
+                return -EINVAL;
+        return __set_rdc_table_num(np, idx, idx + 1, table_num, mac_pref);
+}
+
+static u64 vlan_entry_set_parity(u64 reg_val)
+{
+        u64 port01_mask;
+        u64 port23_mask;
+
+        port01_mask = 0x00ff;
+        port23_mask = 0xff00;
+
+        if (hweight64(reg_val & port01_mask) & 1)
+                reg_val |= ENET_VLAN_TBL_PARITY0;
+        else
+                reg_val &= ~ENET_VLAN_TBL_PARITY0;
+
+        if (hweight64(reg_val & port23_mask) & 1)
+                reg_val |= ENET_VLAN_TBL_PARITY1;
+        else
+                reg_val &= ~ENET_VLAN_TBL_PARITY1;
+
+        return reg_val;
+}
+
+static void vlan_tbl_write(struct niu *np, unsigned long index,
+                           int port, int vpr, int rdc_table)
+{
+        u64 reg_val = nr64(ENET_VLAN_TBL(index));
+
+        reg_val &= ~((ENET_VLAN_TBL_VPR |
+                      ENET_VLAN_TBL_VLANRDCTBLN) <<
+                     ENET_VLAN_TBL_SHIFT(port));
+        if (vpr)
+                reg_val |= (ENET_VLAN_TBL_VPR <<
+                            ENET_VLAN_TBL_SHIFT(port));
+        reg_val |= (rdc_table << ENET_VLAN_TBL_SHIFT(port));
+
+        reg_val = vlan_entry_set_parity(reg_val);
+
+        nw64(ENET_VLAN_TBL(index), reg_val);
+}
+
+static void vlan_tbl_clear(struct niu *np)
+{
+        int i;
+
+        for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++)
+                nw64(ENET_VLAN_TBL(i), 0);
+}
+
+static int tcam_wait_bit(struct niu *np, u64 bit)
+{
+        int limit = 1000;
+
+        while (--limit > 0) {
+                if (nr64(TCAM_CTL) & bit)
+                        break;
+                udelay(1);
+        }
+        if (limit < 0)
+                return -ENODEV;
+
+        return 0;
+}
+
+static int tcam_flush(struct niu *np, int index)
+{
+        nw64(TCAM_KEY_0, 0x00);
+        nw64(TCAM_KEY_MASK_0, 0xff);
+        nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
+
+        return tcam_wait_bit(np, TCAM_CTL_STAT);
+}
+
+#if 0
+static int tcam_read(struct niu *np, int index,
+                     u64 *key, u64 *mask)
+{
+        int err;
+
+        nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_READ | index));
+        err = tcam_wait_bit(np, TCAM_CTL_STAT);
+        if (!err) {
+                key[0] = nr64(TCAM_KEY_0);
+                key[1] = nr64(TCAM_KEY_1);
+                key[2] = nr64(TCAM_KEY_2);
+                key[3] = nr64(TCAM_KEY_3);
+                mask[0] = nr64(TCAM_KEY_MASK_0);
+                mask[1] = nr64(TCAM_KEY_MASK_1);
+                mask[2] = nr64(TCAM_KEY_MASK_2);
+                mask[3] = nr64(TCAM_KEY_MASK_3);
+        }
+        return err;
+}
+#endif
+
+static int tcam_write(struct niu *np, int index,
+                      u64 *key, u64 *mask)
+{
+        nw64(TCAM_KEY_0, key[0]);
+        nw64(TCAM_KEY_1, key[1]);
+        nw64(TCAM_KEY_2, key[2]);
+        nw64(TCAM_KEY_3, key[3]);
+        nw64(TCAM_KEY_MASK_0, mask[0]);
+        nw64(TCAM_KEY_MASK_1, mask[1]);
+        nw64(TCAM_KEY_MASK_2, mask[2]);
+        nw64(TCAM_KEY_MASK_3, mask[3]);
+        nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
+
+        return tcam_wait_bit(np, TCAM_CTL_STAT);
+}
+
+#if 0
+static int tcam_assoc_read(struct niu *np, int index, u64 *data)
+{
+        int err;
+
+        nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_READ | index));
+        err = tcam_wait_bit(np, TCAM_CTL_STAT);
+        if (!err)
+                *data = nr64(TCAM_KEY_1);
+
+        return err;
+}
+#endif
+
+static int tcam_assoc_write(struct niu *np, int index, u64 assoc_data)
+{
+        nw64(TCAM_KEY_1, assoc_data);
+        nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_WRITE | index));
+
+        return tcam_wait_bit(np, TCAM_CTL_STAT);
+}
+
+static void tcam_enable(struct niu *np, int on)
+{
+        u64 val = nr64(FFLP_CFG_1);
+
+        if (on)
+                val &= ~FFLP_CFG_1_TCAM_DIS;
+        else
+                val |= FFLP_CFG_1_TCAM_DIS;
+        nw64(FFLP_CFG_1, val);
+}
+
+static void tcam_set_lat_and_ratio(struct niu *np, u64 latency, u64 ratio)
+{
+        u64 val = nr64(FFLP_CFG_1);
+
+        val &= ~(FFLP_CFG_1_FFLPINITDONE |
+                 FFLP_CFG_1_CAMLAT |
+                 FFLP_CFG_1_CAMRATIO);
+        val |= (latency << FFLP_CFG_1_CAMLAT_SHIFT);
+        val |= (ratio << FFLP_CFG_1_CAMRATIO_SHIFT);
+        nw64(FFLP_CFG_1, val);
+
+        val = nr64(FFLP_CFG_1);
+        val |= FFLP_CFG_1_FFLPINITDONE;
+        nw64(FFLP_CFG_1, val);
+}
+
+static int tcam_user_eth_class_enable(struct niu *np, unsigned long class,
+                                      int on)
+{
+        unsigned long reg;
+        u64 val;
+
+        if (class < CLASS_CODE_ETHERTYPE1 ||
+            class > CLASS_CODE_ETHERTYPE2)
+                return -EINVAL;
+
+        reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
+        val = nr64(reg);
+        if (on)
+                val |= L2_CLS_VLD;
+        else
+                val &= ~L2_CLS_VLD;
+        nw64(reg, val);
+
+        return 0;
+}
+
+#if 0
+static int tcam_user_eth_class_set(struct niu *np, unsigned long class,
+                                   u64 ether_type)
+{
+        unsigned long reg;
+        u64 val;
+
+        if (class < CLASS_CODE_ETHERTYPE1 ||
+            class > CLASS_CODE_ETHERTYPE2 ||
+            (ether_type & ~(u64)0xffff) != 0)
+                return -EINVAL;
+
+        reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
+        val = nr64(reg);
+        val &= ~L2_CLS_ETYPE;
+        val |= (ether_type << L2_CLS_ETYPE_SHIFT);
+        nw64(reg, val);
+
+        return 0;
+}
+#endif
+
+static int tcam_user_ip_class_enable(struct niu *np, unsigned long class,
+                                     int on)
+{
+        unsigned long reg;
+        u64 val;
+
+        if (class < CLASS_CODE_USER_PROG1 ||
+            class > CLASS_CODE_USER_PROG4)
+                return -EINVAL;
+
+        reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
+        val = nr64(reg);
+        if (on)
+                val |= L3_CLS_VALID;
+        else
+                val &= ~L3_CLS_VALID;
+        nw64(reg, val);
+
+        return 0;
+}
+
+#if 0
+static int tcam_user_ip_class_set(struct niu *np, unsigned long class,
+                                  int ipv6, u64 protocol_id,
+                                  u64 tos_mask, u64 tos_val)
+{
+        unsigned long reg;
+        u64 val;
+
+        if (class < CLASS_CODE_USER_PROG1 ||
+            class > CLASS_CODE_USER_PROG4 ||
+            (protocol_id & ~(u64)0xff) != 0 ||
+            (tos_mask & ~(u64)0xff) != 0 ||
+            (tos_val & ~(u64)0xff) != 0)
+                return -EINVAL;
+
+        reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
+        val = nr64(reg);
+        val &= ~(L3_CLS_IPVER | L3_CLS_PID |
+                 L3_CLS_TOSMASK | L3_CLS_TOS);
+        if (ipv6)
+                val |= L3_CLS_IPVER;
+        val |= (protocol_id << L3_CLS_PID_SHIFT);
+        val |= (tos_mask << L3_CLS_TOSMASK_SHIFT);
+        val |= (tos_val << L3_CLS_TOS_SHIFT);
+        nw64(reg, val);
+
+        return 0;
+}
+#endif
+
+static int tcam_early_init(struct niu *np)
+{
+        unsigned long i;
+        int err;
+
+        tcam_enable(np, 0);
+        tcam_set_lat_and_ratio(np,
+                               DEFAULT_TCAM_LATENCY,
+                               DEFAULT_TCAM_ACCESS_RATIO);
+        for (i = CLASS_CODE_ETHERTYPE1; i <= CLASS_CODE_ETHERTYPE2; i++) {
+                err = tcam_user_eth_class_enable(np, i, 0);
+                if (err)
+                        return err;
+        }
+        for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_USER_PROG4; i++) {
+                err = tcam_user_ip_class_enable(np, i, 0);
+                if (err)
+                        return err;
+        }
+
+        return 0;
+}
+
+static int tcam_flush_all(struct niu *np)
+{
+        unsigned long i;
+
+        for (i = 0; i < np->parent->tcam_num_entries; i++) {
+                int err = tcam_flush(np, i);
+                if (err)
+                        return err;
+        }
+        return 0;
+}
+
+static u64 hash_addr_regval(unsigned long index, unsigned long num_entries)
+{
+        return ((u64)index | (num_entries == 1 ?
+                              HASH_TBL_ADDR_AUTOINC : 0));
+}
+
+#if 0
+static int hash_read(struct niu *np, unsigned long partition,
+                     unsigned long index, unsigned long num_entries,
+                     u64 *data)
+{
+        u64 val = hash_addr_regval(index, num_entries);
+        unsigned long i;
+
+        if (partition >= FCRAM_NUM_PARTITIONS ||
+            index + num_entries > FCRAM_SIZE)
+                return -EINVAL;
+
+        nw64(HASH_TBL_ADDR(partition), val);
+        for (i = 0; i < num_entries; i++)
+                data[i] = nr64(HASH_TBL_DATA(partition));
+
+        return 0;
+}
+#endif
+
+static int hash_write(struct niu *np, unsigned long partition,
+                      unsigned long index, unsigned long num_entries,
+                      u64 *data)
+{
+        u64 val = hash_addr_regval(index, num_entries);
+        unsigned long i;
+
+        if (partition >= FCRAM_NUM_PARTITIONS ||
+            index + (num_entries * 8) > FCRAM_SIZE)
+                return -EINVAL;
+
+        nw64(HASH_TBL_ADDR(partition), val);
+        for (i = 0; i < num_entries; i++)
+                nw64(HASH_TBL_DATA(partition), data[i]);
+
+        return 0;
+}
+
+static void fflp_reset(struct niu *np)
+{
+        u64 val;
+
+        nw64(FFLP_CFG_1, FFLP_CFG_1_PIO_FIO_RST);
+        udelay(10);
+        nw64(FFLP_CFG_1, 0);
+
+        val = FFLP_CFG_1_FCRAMOUTDR_NORMAL | FFLP_CFG_1_FFLPINITDONE;
+        nw64(FFLP_CFG_1, val);
+}
+
+static void fflp_set_timings(struct niu *np)
+{
+        u64 val = nr64(FFLP_CFG_1);
+
+        val &= ~FFLP_CFG_1_FFLPINITDONE;
+        val |= (DEFAULT_FCRAMRATIO << FFLP_CFG_1_FCRAMRATIO_SHIFT);
+        nw64(FFLP_CFG_1, val);
+
+        val = nr64(FFLP_CFG_1);
+        val |= FFLP_CFG_1_FFLPINITDONE;
+        nw64(FFLP_CFG_1, val);
+
+        val = nr64(FCRAM_REF_TMR);
+        val &= ~(FCRAM_REF_TMR_MAX | FCRAM_REF_TMR_MIN);
+        val |= (DEFAULT_FCRAM_REFRESH_MAX << FCRAM_REF_TMR_MAX_SHIFT);
+        val |= (DEFAULT_FCRAM_REFRESH_MIN << FCRAM_REF_TMR_MIN_SHIFT);
+        nw64(FCRAM_REF_TMR, val);
+}
+
+static int fflp_set_partition(struct niu *np, u64 partition,
+                              u64 mask, u64 base, int enable)
+{
+        unsigned long reg;
+        u64 val;
+
+        if (partition >= FCRAM_NUM_PARTITIONS ||
+            (mask & ~(u64)0x1f) != 0 ||
+            (base & ~(u64)0x1f) != 0)
+                return -EINVAL;
+
+        reg = FLW_PRT_SEL(partition);
+
+        val = nr64(reg);
+        val &= ~(FLW_PRT_SEL_EXT | FLW_PRT_SEL_MASK | FLW_PRT_SEL_BASE);
+        val |= (mask << FLW_PRT_SEL_MASK_SHIFT);
+        val |= (base << FLW_PRT_SEL_BASE_SHIFT);
+        if (enable)
+                val |= FLW_PRT_SEL_EXT;
+        nw64(reg, val);
+
+        return 0;
+}
+
+static int fflp_disable_all_partitions(struct niu *np)
+{
+        unsigned long i;
+
+        for (i = 0; i < FCRAM_NUM_PARTITIONS; i++) {
+                int err = fflp_set_partition(np, 0, 0, 0, 0);
+                if (err)
+                        return err;
+        }
+        return 0;
+}
+
+static void fflp_llcsnap_enable(struct niu *np, int on)
+{
+        u64 val = nr64(FFLP_CFG_1);
+
+        if (on)
+                val |= FFLP_CFG_1_LLCSNAP;
+        else
+                val &= ~FFLP_CFG_1_LLCSNAP;
+        nw64(FFLP_CFG_1, val);
+}
+
+static void fflp_errors_enable(struct niu *np, int on)
+{
+        u64 val = nr64(FFLP_CFG_1);
+
+        if (on)
+                val &= ~FFLP_CFG_1_ERRORDIS;
+        else
+                val |= FFLP_CFG_1_ERRORDIS;
+        nw64(FFLP_CFG_1, val);
+}
+
+static int fflp_hash_clear(struct niu *np)
+{
+        struct fcram_hash_ipv4 ent;
+        unsigned long i;
+
+        /* IPV4 hash entry with valid bit clear, rest is don't care.  */
+        memset(&ent, 0, sizeof(ent));
+        ent.header = HASH_HEADER_EXT;
+
+        for (i = 0; i < FCRAM_SIZE; i += sizeof(ent)) {
+                int err = hash_write(np, 0, i, 1, (u64 *) &ent);
+                if (err)
+                        return err;
+        }
+        return 0;
+}
+
+static int fflp_early_init(struct niu *np)
+{
+        struct niu_parent *parent;
+        unsigned long flags;
+        int err;
+
+        niu_lock_parent(np, flags);
+
+        parent = np->parent;
+        err = 0;
+        if (!(parent->flags & PARENT_FLGS_CLS_HWINIT)) {
+                niudbg(PROBE, "fflp_early_init: Initting hw on port %u\n",
+                       np->port);
+                if (np->parent->plat_type != PLAT_TYPE_NIU) {
+                        fflp_reset(np);
+                        fflp_set_timings(np);
+                        err = fflp_disable_all_partitions(np);
+                        if (err) {
+                                niudbg(PROBE, "fflp_disable_all_partitions "
+                                       "failed, err=%d\n", err);
+                                goto out;
+                        }
+                }
+
+                err = tcam_early_init(np);
+                if (err) {
+                        niudbg(PROBE, "tcam_early_init failed, err=%d\n",
+                               err);
+                        goto out;
+                }
+                fflp_llcsnap_enable(np, 1);
+                fflp_errors_enable(np, 0);
+                nw64(H1POLY, 0);
+                nw64(H2POLY, 0);
+
+                err = tcam_flush_all(np);
+                if (err) {
+                        niudbg(PROBE, "tcam_flush_all failed, err=%d\n",
+                               err);
+                        goto out;
+                }
+                if (np->parent->plat_type != PLAT_TYPE_NIU) {
+                        err = fflp_hash_clear(np);
+                        if (err) {
+                                niudbg(PROBE, "fflp_hash_clear failed, "
+                                       "err=%d\n", err);
+                                goto out;
+                        }
+                }
+
+                vlan_tbl_clear(np);
+
+                niudbg(PROBE, "fflp_early_init: Success\n");
+                parent->flags |= PARENT_FLGS_CLS_HWINIT;
+        }
+out:
+        niu_unlock_parent(np, flags);
+        return err;
+}
+
+static int niu_set_flow_key(struct niu *np, unsigned long class_code, u64 key)
+{
+        if (class_code < CLASS_CODE_USER_PROG1 ||
+            class_code > CLASS_CODE_SCTP_IPV6)
+                return -EINVAL;
+
+        nw64(FLOW_KEY(class_code - CLASS_CODE_USER_PROG1), key);
+        return 0;
+}
+
+static int niu_set_tcam_key(struct niu *np, unsigned long class_code, u64 key)
+{
+        if (class_code < CLASS_CODE_USER_PROG1 ||
+            class_code > CLASS_CODE_SCTP_IPV6)
+                return -EINVAL;
+
+        nw64(TCAM_KEY(class_code - CLASS_CODE_USER_PROG1), key);
+        return 0;
+}
+
+static void niu_rx_skb_append(struct sk_buff *skb, struct page *page,
+                              u32 offset, u32 size)
+{
+        int i = skb_shinfo(skb)->nr_frags;
+        skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
+
+        frag->page = page;
+        frag->page_offset = offset;
+        frag->size = size;
+
+        skb->len += size;
+        skb->data_len += size;
+        skb->truesize += size;
+
+        skb_shinfo(skb)->nr_frags = i + 1;
+}
+
+static unsigned int niu_hash_rxaddr(struct rx_ring_info *rp, u64 a)
+{
+        a >>= PAGE_SHIFT;
+        a ^= (a >> ilog2(MAX_RBR_RING_SIZE));
+
+        return (a & (MAX_RBR_RING_SIZE - 1));
+}
+
+static struct page *niu_find_rxpage(struct rx_ring_info *rp, u64 addr,
+                                    struct page ***link)
+{
+        unsigned int h = niu_hash_rxaddr(rp, addr);
+        struct page *p, **pp;
+
+        addr &= PAGE_MASK;
+        pp = &rp->rxhash[h];
+        for (; (p = *pp) != NULL; pp = (struct page **) &p->mapping) {
+                if (p->index == addr) {
+                        *link = pp;
+                        break;
+                }
+        }
+
+        return p;
+}
+
+static void niu_hash_page(struct rx_ring_info *rp, struct page *page, u64 base)
+{
+        unsigned int h = niu_hash_rxaddr(rp, base);
+
+        page->index = base;
+        page->mapping = (struct address_space *) rp->rxhash[h];
+        rp->rxhash[h] = page;
+}
+
+static int niu_rbr_add_page(struct niu *np, struct rx_ring_info *rp,
+                            gfp_t mask, int start_index)
+{
+        struct page *page;
+        u64 addr;
+        int i;
+
+        page = alloc_page(mask);
+        if (!page)
+                return -ENOMEM;
+
+        addr = np->ops->map_page(np->device, page, 0,
+                                 PAGE_SIZE, DMA_FROM_DEVICE);
+
+        niu_hash_page(rp, page, addr);
+        if (rp->rbr_blocks_per_page > 1)
+                atomic_add(rp->rbr_blocks_per_page - 1,
+                           &compound_head(page)->_count);
+
+        for (i = 0; i < rp->rbr_blocks_per_page; i++) {
+                __le32 *rbr = &rp->rbr[start_index + i];
+
+                *rbr = cpu_to_le32(addr >> RBR_DESCR_ADDR_SHIFT);
+                addr += rp->rbr_block_size;
+        }
+
+        return 0;
+}
+
+static void niu_rbr_refill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
+{
+        int index = rp->rbr_index;
+
+        rp->rbr_pending++;
+        if ((rp->rbr_pending % rp->rbr_blocks_per_page) == 0) {
+                int err = niu_rbr_add_page(np, rp, mask, index);
+
+                if (unlikely(err)) {
+                        rp->rbr_pending--;
+                        return;
+                }
+
+                rp->rbr_index += rp->rbr_blocks_per_page;
+                BUG_ON(rp->rbr_index > rp->rbr_table_size);
+                if (rp->rbr_index == rp->rbr_table_size)
+                        rp->rbr_index = 0;
+
+                if (rp->rbr_pending >= rp->rbr_kick_thresh) {
+                        nw64(RBR_KICK(rp->rx_channel), rp->rbr_pending);
+                        rp->rbr_pending = 0;
+                }
+        }
+}
+
+static int niu_rx_pkt_ignore(struct niu *np, struct rx_ring_info *rp)
+{
+        unsigned int index = rp->rcr_index;
+        int num_rcr = 0;
+
+        rp->rx_dropped++;
+        while (1) {
+                struct page *page, **link;
+                u64 addr, val;
+                u32 rcr_size;
+
+                num_rcr++;
+
+                val = le64_to_cpup(&rp->rcr[index]);
+                addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
+                        RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
+                page = niu_find_rxpage(rp, addr, &link);
+
+                rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
+                                         RCR_ENTRY_PKTBUFSZ_SHIFT];
+                if ((page->index + PAGE_SIZE) - rcr_size == addr) {
+                        *link = (struct page *) page->mapping;
+                        np->ops->unmap_page(np->device, page->index,
+                                            PAGE_SIZE, DMA_FROM_DEVICE);
+                        page->index = 0;
+                        page->mapping = NULL;
+                        __free_page(page);
+                        rp->rbr_refill_pending++;
+                }
+
+                index = NEXT_RCR(rp, index);
+                if (!(val & RCR_ENTRY_MULTI))
+                        break;
+
+        }
+        rp->rcr_index = index;
+
+        return num_rcr;
+}
+
+static int niu_process_rx_pkt(struct niu *np, struct rx_ring_info *rp)
+{
+        unsigned int index = rp->rcr_index;
+        struct sk_buff *skb;
+        int len, num_rcr;
+
+        skb = netdev_alloc_skb(np->dev, RX_SKB_ALLOC_SIZE);
+        if (unlikely(!skb))
+                return niu_rx_pkt_ignore(np, rp);
+
+        num_rcr = 0;
+        while (1) {
+                struct page *page, **link;
+                u32 rcr_size, append_size;
+                u64 addr, val, off;
+
+                num_rcr++;
+
+                val = le64_to_cpup(&rp->rcr[index]);
+
+                len = (val & RCR_ENTRY_L2_LEN) >>
+                        RCR_ENTRY_L2_LEN_SHIFT;
+                len -= ETH_FCS_LEN;
+
+                addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
+                        RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
+                page = niu_find_rxpage(rp, addr, &link);
+
+                rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
+                                         RCR_ENTRY_PKTBUFSZ_SHIFT];
+
+                off = addr & ~PAGE_MASK;
+                append_size = rcr_size;
+                if (num_rcr == 1) {
+                        int ptype;
+
+                        off += 2;
+                        append_size -= 2;
+
+                        ptype = (val >> RCR_ENTRY_PKT_TYPE_SHIFT);
+                        if ((ptype == RCR_PKT_TYPE_TCP ||
+                             ptype == RCR_PKT_TYPE_UDP) &&
+                            !(val & (RCR_ENTRY_NOPORT |
+                                     RCR_ENTRY_ERROR)))
+                                skb->ip_summed = CHECKSUM_UNNECESSARY;
+                        else
+                                skb->ip_summed = CHECKSUM_NONE;
+                }
+                if (!(val & RCR_ENTRY_MULTI))
+                        append_size = len - skb->len;
+
+                niu_rx_skb_append(skb, page, off, append_size);
+                if ((page->index + rp->rbr_block_size) - rcr_size == addr) {
+                        *link = (struct page *) page->mapping;
+                        np->ops->unmap_page(np->device, page->index,
+                                            PAGE_SIZE, DMA_FROM_DEVICE);
+                        page->index = 0;
+                        page->mapping = NULL;
+                        rp->rbr_refill_pending++;
+                } else
+                        get_page(page);
+
+                index = NEXT_RCR(rp, index);
+                if (!(val & RCR_ENTRY_MULTI))
+                        break;
+
+        }
+        rp->rcr_index = index;
+
+        skb_reserve(skb, NET_IP_ALIGN);
+        __pskb_pull_tail(skb, min(len, NIU_RXPULL_MAX));
+
+        rp->rx_packets++;
+        rp->rx_bytes += skb->len;
+
+        skb->protocol = eth_type_trans(skb, np->dev);
+        netif_receive_skb(skb);
+
+        return num_rcr;
+}
+
+static int niu_rbr_fill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
+{
+        int blocks_per_page = rp->rbr_blocks_per_page;
+        int err, index = rp->rbr_index;
+
+        err = 0;
+        while (index < (rp->rbr_table_size - blocks_per_page)) {
+                err = niu_rbr_add_page(np, rp, mask, index);
+                if (err)
+                        break;
+
+                index += blocks_per_page;
+        }
+
+        rp->rbr_index = index;
+        return err;
+}
+
+static void niu_rbr_free(struct niu *np, struct rx_ring_info *rp)
+{
+        int i;
+
+        for (i = 0; i < MAX_RBR_RING_SIZE; i++) {
+                struct page *page;
+
+                page = rp->rxhash[i];
+                while (page) {
+                        struct page *next = (struct page *) page->mapping;
+                        u64 base = page->index;
+
+                        np->ops->unmap_page(np->device, base, PAGE_SIZE,
+                                            DMA_FROM_DEVICE);
+                        page->index = 0;
+                        page->mapping = NULL;
+
+                        __free_page(page);
+
+                        page = next;
+                }
+        }
+
+        for (i = 0; i < rp->rbr_table_size; i++)
+                rp->rbr[i] = cpu_to_le32(0);
+        rp->rbr_index = 0;
+}
+
+static int release_tx_packet(struct niu *np, struct tx_ring_info *rp, int idx)
+{
+        struct tx_buff_info *tb = &rp->tx_buffs[idx];
+        struct sk_buff *skb = tb->skb;
+        struct tx_pkt_hdr *tp;
+        u64 tx_flags;
+        int i, len;
+
+        tp = (struct tx_pkt_hdr *) skb->data;
+        tx_flags = le64_to_cpup(&tp->flags);
+
+        rp->tx_packets++;
+        rp->tx_bytes += (((tx_flags & TXHDR_LEN) >> TXHDR_LEN_SHIFT) -
+                         ((tx_flags & TXHDR_PAD) / 2));
+
+        len = skb_headlen(skb);
+        np->ops->unmap_single(np->device, tb->mapping,
+                              len, DMA_TO_DEVICE);
+
+        if (le64_to_cpu(rp->descr[idx]) & TX_DESC_MARK)
+                rp->mark_pending--;
+
+        tb->skb = NULL;
+        do {
+                idx = NEXT_TX(rp, idx);
+                len -= MAX_TX_DESC_LEN;
+        } while (len > 0);
+
+        for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
+                tb = &rp->tx_buffs[idx];
+                BUG_ON(tb->skb != NULL);
+                np->ops->unmap_page(np->device, tb->mapping,
+                                    skb_shinfo(skb)->frags[i].size,
+                                    DMA_TO_DEVICE);
+                idx = NEXT_TX(rp, idx);
+        }
+
+        dev_kfree_skb(skb);
+
+        return idx;
+}
+
+#define NIU_TX_WAKEUP_THRESH(rp)                ((rp)->pending / 4)
+
+static void niu_tx_work(struct niu *np, struct tx_ring_info *rp)
+{
+        u16 pkt_cnt, tmp;
+        int cons;
+        u64 cs;
+
+        cs = rp->tx_cs;
+        if (unlikely(!(cs & (TX_CS_MK | TX_CS_MMK))))
+                goto out;
+
+        tmp = pkt_cnt = (cs & TX_CS_PKT_CNT) >> TX_CS_PKT_CNT_SHIFT;
+        pkt_cnt = (pkt_cnt - rp->last_pkt_cnt) &
+                (TX_CS_PKT_CNT >> TX_CS_PKT_CNT_SHIFT);
+
+        rp->last_pkt_cnt = tmp;
+
+        cons = rp->cons;
+
+        niudbg(TX_DONE, "%s: niu_tx_work() pkt_cnt[%u] cons[%d]\n",
+               np->dev->name, pkt_cnt, cons);
+
+        while (pkt_cnt--)
+                cons = release_tx_packet(np, rp, cons);
+
+        rp->cons = cons;
+        smp_mb();
+
+out:
+        if (unlikely(netif_queue_stopped(np->dev) &&
+                     (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))) {
+                netif_tx_lock(np->dev);
+                if (netif_queue_stopped(np->dev) &&
+                    (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))
+                        netif_wake_queue(np->dev);
+                netif_tx_unlock(np->dev);
+        }
+}
+
+static int niu_rx_work(struct niu *np, struct rx_ring_info *rp, int budget)
+{
+        int qlen, rcr_done = 0, work_done = 0;
+        struct rxdma_mailbox *mbox = rp->mbox;
+        u64 stat;
+
+#if 1
+        stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
+        qlen = nr64(RCRSTAT_A(rp->rx_channel)) & RCRSTAT_A_QLEN;
+#else
+        stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
+        qlen = (le64_to_cpup(&mbox->rcrstat_a) & RCRSTAT_A_QLEN);
+#endif
+        mbox->rx_dma_ctl_stat = 0;
+        mbox->rcrstat_a = 0;
+
+        niudbg(RX_STATUS, "%s: niu_rx_work(chan[%d]), stat[%llx] qlen=%d\n",
+               np->dev->name, rp->rx_channel, (unsigned long long) stat, qlen);
+
+        rcr_done = work_done = 0;
+        qlen = min(qlen, budget);
+        while (work_done < qlen) {
+                rcr_done += niu_process_rx_pkt(np, rp);
+                work_done++;
+        }
+
+        if (rp->rbr_refill_pending >= rp->rbr_kick_thresh) {
+                unsigned int i;
+
+                for (i = 0; i < rp->rbr_refill_pending; i++)
+                        niu_rbr_refill(np, rp, GFP_ATOMIC);
+                rp->rbr_refill_pending = 0;
+        }
+
+        stat = (RX_DMA_CTL_STAT_MEX |
+                ((u64)work_done << RX_DMA_CTL_STAT_PKTREAD_SHIFT) |
+                ((u64)rcr_done << RX_DMA_CTL_STAT_PTRREAD_SHIFT));
+
+        nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat);
+
+        return work_done;
+}
+
+static int niu_poll_core(struct niu *np, struct niu_ldg *lp, int budget)
+{
+        u64 v0 = lp->v0;
+        u32 tx_vec = (v0 >> 32);
+        u32 rx_vec = (v0 & 0xffffffff);
+        int i, work_done = 0;
+
+        niudbg(INTR, "%s: niu_poll_core() v0[%016llx]\n",
+               np->dev->name, (unsigned long long) v0);
+
+        for (i = 0; i < np->num_tx_rings; i++) {
+                struct tx_ring_info *rp = &np->tx_rings[i];
+                if (tx_vec & (1 << rp->tx_channel))
+                        niu_tx_work(np, rp);
+                nw64(LD_IM0(LDN_TXDMA(rp->tx_channel)), 0);
+        }
+
+        for (i = 0; i < np->num_rx_rings; i++) {
+                struct rx_ring_info *rp = &np->rx_rings[i];
+
+                if (rx_vec & (1 << rp->rx_channel)) {
+                        int this_work_done;
+
+                        this_work_done = niu_rx_work(np, rp,
+                                                     budget);
+
+                        budget -= this_work_done;
+                        work_done += this_work_done;
+                }
+                nw64(LD_IM0(LDN_RXDMA(rp->rx_channel)), 0);
+        }
+
+        return work_done;
+}
+
+static int niu_poll(struct napi_struct *napi, int budget)
+{
+        struct niu_ldg *lp = container_of(napi, struct niu_ldg, napi);
+        struct niu *np = lp->np;
+        int work_done;
+
+        work_done = niu_poll_core(np, lp, budget);
+
+        if (work_done < budget) {
+                netif_rx_complete(np->dev, napi);
+                niu_ldg_rearm(np, lp, 1);
+        }
+        return work_done;
+}
+
+static void niu_log_rxchan_errors(struct niu *np, struct rx_ring_info *rp,
+                                  u64 stat)
+{
+        dev_err(np->device, PFX "%s: RX channel %u errors ( ",
+                np->dev->name, rp->rx_channel);
+
+        if (stat & RX_DMA_CTL_STAT_RBR_TMOUT)
+                printk("RBR_TMOUT ");
+        if (stat & RX_DMA_CTL_STAT_RSP_CNT_ERR)
+                printk("RSP_CNT ");
+        if (stat & RX_DMA_CTL_STAT_BYTE_EN_BUS)
+                printk("BYTE_EN_BUS ");
+        if (stat & RX_DMA_CTL_STAT_RSP_DAT_ERR)
+                printk("RSP_DAT ");
+        if (stat & RX_DMA_CTL_STAT_RCR_ACK_ERR)
+                printk("RCR_ACK ");
+        if (stat & RX_DMA_CTL_STAT_RCR_SHA_PAR)
+                printk("RCR_SHA_PAR ");
+        if (stat & RX_DMA_CTL_STAT_RBR_PRE_PAR)
+                printk("RBR_PRE_PAR ");
+        if (stat & RX_DMA_CTL_STAT_CONFIG_ERR)
+                printk("CONFIG ");
+        if (stat & RX_DMA_CTL_STAT_RCRINCON)
+                printk("RCRINCON ");
+        if (stat & RX_DMA_CTL_STAT_RCRFULL)
+                printk("RCRFULL ");
+        if (stat & RX_DMA_CTL_STAT_RBRFULL)
+                printk("RBRFULL ");
+        if (stat & RX_DMA_CTL_STAT_RBRLOGPAGE)
+                printk("RBRLOGPAGE ");
+        if (stat & RX_DMA_CTL_STAT_CFIGLOGPAGE)
+                printk("CFIGLOGPAGE ");
+        if (stat & RX_DMA_CTL_STAT_DC_FIFO_ERR)
+                printk("DC_FIDO ");
+
+        printk(")\n");
+}
+
+static int niu_rx_error(struct niu *np, struct rx_ring_info *rp)
+{
+        u64 stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
+        int err = 0;
+
+        dev_err(np->device, PFX "%s: RX channel %u error, stat[%llx]\n",
+                np->dev->name, rp->rx_channel, (unsigned long long) stat);
+
+        niu_log_rxchan_errors(np, rp, stat);
+
+        if (stat & (RX_DMA_CTL_STAT_CHAN_FATAL |
+                    RX_DMA_CTL_STAT_PORT_FATAL))
+                err = -EINVAL;
+
+        nw64(RX_DMA_CTL_STAT(rp->rx_channel),
+             stat & RX_DMA_CTL_WRITE_CLEAR_ERRS);
+
+        return err;
+}
+
+static void niu_log_txchan_errors(struct niu *np, struct tx_ring_info *rp,
+                                  u64 cs)
+{
+        dev_err(np->device, PFX "%s: TX channel %u errors ( ",
+                np->dev->name, rp->tx_channel);
+
+        if (cs & TX_CS_MBOX_ERR)
+                printk("MBOX ");
+        if (cs & TX_CS_PKT_SIZE_ERR)
+                printk("PKT_SIZE ");
+        if (cs & TX_CS_TX_RING_OFLOW)
+                printk("TX_RING_OFLOW ");
+        if (cs & TX_CS_PREF_BUF_PAR_ERR)
+                printk("PREF_BUF_PAR ");
+        if (cs & TX_CS_NACK_PREF)
+                printk("NACK_PREF ");
+        if (cs & TX_CS_NACK_PKT_RD)
+                printk("NACK_PKT_RD ");
+        if (cs & TX_CS_CONF_PART_ERR)
+                printk("CONF_PART ");
+        if (cs & TX_CS_PKT_PRT_ERR)
+                printk("PKT_PTR ");
+
+        printk(")\n");
+}
+
+static int niu_tx_error(struct niu *np, struct tx_ring_info *rp)
+{
+        u64 cs, logh, logl;
+
+        cs = nr64(TX_CS(rp->tx_channel));
+        logh = nr64(TX_RNG_ERR_LOGH(rp->tx_channel));
+        logl = nr64(TX_RNG_ERR_LOGL(rp->tx_channel));
+
+        dev_err(np->device, PFX "%s: TX channel %u error, "
+                "cs[%llx] logh[%llx] logl[%llx]\n",
+                np->dev->name, rp->tx_channel,
+                (unsigned long long) cs,
+                (unsigned long long) logh,
+                (unsigned long long) logl);
+
+        niu_log_txchan_errors(np, rp, cs);
+
+        return -ENODEV;
+}
+
+static int niu_mif_interrupt(struct niu *np)
+{
+        u64 mif_status = nr64(MIF_STATUS);
+        int phy_mdint = 0;
+
+        if (np->flags & NIU_FLAGS_XMAC) {
+                u64 xrxmac_stat = nr64_mac(XRXMAC_STATUS);
+
+                if (xrxmac_stat & XRXMAC_STATUS_PHY_MDINT)
+                        phy_mdint = 1;
+        }
+
+        dev_err(np->device, PFX "%s: MIF interrupt, "
+                "stat[%llx] phy_mdint(%d)\n",
+                np->dev->name, (unsigned long long) mif_status, phy_mdint);
+
+        return -ENODEV;
+}
+
+static void niu_xmac_interrupt(struct niu *np)
+{
+        struct niu_xmac_stats *mp = &np->mac_stats.xmac;
+        u64 val;
+
+        val = nr64_mac(XTXMAC_STATUS);
+        if (val & XTXMAC_STATUS_FRAME_CNT_EXP)
+                mp->tx_frames += TXMAC_FRM_CNT_COUNT;
+        if (val & XTXMAC_STATUS_BYTE_CNT_EXP)
+                mp->tx_bytes += TXMAC_BYTE_CNT_COUNT;
+        if (val & XTXMAC_STATUS_TXFIFO_XFR_ERR)
+                mp->tx_fifo_errors++;
+        if (val & XTXMAC_STATUS_TXMAC_OFLOW)
+                mp->tx_overflow_errors++;
+        if (val & XTXMAC_STATUS_MAX_PSIZE_ERR)
+                mp->tx_max_pkt_size_errors++;
+        if (val & XTXMAC_STATUS_TXMAC_UFLOW)
+                mp->tx_underflow_errors++;
+
+        val = nr64_mac(XRXMAC_STATUS);
+        if (val & XRXMAC_STATUS_LCL_FLT_STATUS)
+                mp->rx_local_faults++;
+        if (val & XRXMAC_STATUS_RFLT_DET)
+                mp->rx_remote_faults++;
+        if (val & XRXMAC_STATUS_LFLT_CNT_EXP)
+                mp->rx_link_faults += LINK_FAULT_CNT_COUNT;
+        if (val & XRXMAC_STATUS_ALIGNERR_CNT_EXP)
+                mp->rx_align_errors += RXMAC_ALIGN_ERR_CNT_COUNT;
+        if (val & XRXMAC_STATUS_RXFRAG_CNT_EXP)
+                mp->rx_frags += RXMAC_FRAG_CNT_COUNT;
+        if (val & XRXMAC_STATUS_RXMULTF_CNT_EXP)
+                mp->rx_mcasts += RXMAC_MC_FRM_CNT_COUNT;
+        if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
+                mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
+        if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
+                mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
+        if (val & XRXMAC_STATUS_RXHIST1_CNT_EXP)
+                mp->rx_hist_cnt1 += RXMAC_HIST_CNT1_COUNT;
+        if (val & XRXMAC_STATUS_RXHIST2_CNT_EXP)
+                mp->rx_hist_cnt2 += RXMAC_HIST_CNT2_COUNT;
+        if (val & XRXMAC_STATUS_RXHIST3_CNT_EXP)
+                mp->rx_hist_cnt3 += RXMAC_HIST_CNT3_COUNT;
+        if (val & XRXMAC_STATUS_RXHIST4_CNT_EXP)
+                mp->rx_hist_cnt4 += RXMAC_HIST_CNT4_COUNT;
+        if (val & XRXMAC_STATUS_RXHIST5_CNT_EXP)
+                mp->rx_hist_cnt5 += RXMAC_HIST_CNT5_COUNT;
+        if (val & XRXMAC_STATUS_RXHIST6_CNT_EXP)
+                mp->rx_hist_cnt6 += RXMAC_HIST_CNT6_COUNT;
+        if (val & XRXMAC_STATUS_RXHIST7_CNT_EXP)
+                mp->rx_hist_cnt7 += RXMAC_HIST_CNT7_COUNT;
+        if (val & XRXMAC_STAT_MSK_RXOCTET_CNT_EXP)
+                mp->rx_octets += RXMAC_BT_CNT_COUNT;
+        if (val & XRXMAC_STATUS_CVIOLERR_CNT_EXP)
+                mp->rx_code_violations += RXMAC_CD_VIO_CNT_COUNT;
+        if (val & XRXMAC_STATUS_LENERR_CNT_EXP)
+                mp->rx_len_errors += RXMAC_MPSZER_CNT_COUNT;
+        if (val & XRXMAC_STATUS_CRCERR_CNT_EXP)
+                mp->rx_crc_errors += RXMAC_CRC_ER_CNT_COUNT;
+        if (val & XRXMAC_STATUS_RXUFLOW)
+                mp->rx_underflows++;
+        if (val & XRXMAC_STATUS_RXOFLOW)
+                mp->rx_overflows++;
+
+        val = nr64_mac(XMAC_FC_STAT);
+        if (val & XMAC_FC_STAT_TX_MAC_NPAUSE)
+                mp->pause_off_state++;
+        if (val & XMAC_FC_STAT_TX_MAC_PAUSE)
+                mp->pause_on_state++;
+        if (val & XMAC_FC_STAT_RX_MAC_RPAUSE)
+                mp->pause_received++;
+}
+
+static void niu_bmac_interrupt(struct niu *np)
+{
+        struct niu_bmac_stats *mp = &np->mac_stats.bmac;
+        u64 val;
+
+        val = nr64_mac(BTXMAC_STATUS);
+        if (val & BTXMAC_STATUS_UNDERRUN)
+                mp->tx_underflow_errors++;
+        if (val & BTXMAC_STATUS_MAX_PKT_ERR)
+                mp->tx_max_pkt_size_errors++;
+        if (val & BTXMAC_STATUS_BYTE_CNT_EXP)
+                mp->tx_bytes += BTXMAC_BYTE_CNT_COUNT;
+        if (val & BTXMAC_STATUS_FRAME_CNT_EXP)
+                mp->tx_frames += BTXMAC_FRM_CNT_COUNT;
+
+        val = nr64_mac(BRXMAC_STATUS);
+        if (val & BRXMAC_STATUS_OVERFLOW)
+                mp->rx_overflows++;
+        if (val & BRXMAC_STATUS_FRAME_CNT_EXP)
+                mp->rx_frames += BRXMAC_FRAME_CNT_COUNT;
+        if (val & BRXMAC_STATUS_ALIGN_ERR_EXP)
+                mp->rx_align_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
+        if (val & BRXMAC_STATUS_CRC_ERR_EXP)
+                mp->rx_crc_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
+        if (val & BRXMAC_STATUS_LEN_ERR_EXP)
+                mp->rx_len_errors += BRXMAC_CODE_VIOL_ERR_CNT_COUNT;
+
+        val = nr64_mac(BMAC_CTRL_STATUS);
+        if (val & BMAC_CTRL_STATUS_NOPAUSE)
+                mp->pause_off_state++;
+        if (val & BMAC_CTRL_STATUS_PAUSE)
+                mp->pause_on_state++;
+        if (val & BMAC_CTRL_STATUS_PAUSE_RECV)
+                mp->pause_received++;
+}
+
+static int niu_mac_interrupt(struct niu *np)
+{
+        if (np->flags & NIU_FLAGS_XMAC)
+                niu_xmac_interrupt(np);
+        else
+                niu_bmac_interrupt(np);
+
+        return 0;
+}
+
+static void niu_log_device_error(struct niu *np, u64 stat)
+{
+        dev_err(np->device, PFX "%s: Core device errors ( ",
+                np->dev->name);
+
+        if (stat & SYS_ERR_MASK_META2)
+                printk("META2 ");
+        if (stat & SYS_ERR_MASK_META1)
+                printk("META1 ");
+        if (stat & SYS_ERR_MASK_PEU)
+                printk("PEU ");
+        if (stat & SYS_ERR_MASK_TXC)
+                printk("TXC ");
+        if (stat & SYS_ERR_MASK_RDMC)
+                printk("RDMC ");
+        if (stat & SYS_ERR_MASK_TDMC)
+                printk("TDMC ");
+        if (stat & SYS_ERR_MASK_ZCP)
+                printk("ZCP ");
+        if (stat & SYS_ERR_MASK_FFLP)
+                printk("FFLP ");
+        if (stat & SYS_ERR_MASK_IPP)
+                printk("IPP ");
+        if (stat & SYS_ERR_MASK_MAC)
+                printk("MAC ");
+        if (stat & SYS_ERR_MASK_SMX)
+                printk("SMX ");
+
+        printk(")\n");
+}
+
+static int niu_device_error(struct niu *np)
+{
+        u64 stat = nr64(SYS_ERR_STAT);
+
+        dev_err(np->device, PFX "%s: Core device error, stat[%llx]\n",
+                np->dev->name, (unsigned long long) stat);
+
+        niu_log_device_error(np, stat);
+
+        return -ENODEV;
+}
+
+static int niu_slowpath_interrupt(struct niu *np, struct niu_ldg *lp)
+{
+        u64 v0 = lp->v0;
+        u64 v1 = lp->v1;
+        u64 v2 = lp->v2;
+        int i, err = 0;
+
+        if (v1 & 0x00000000ffffffffULL) {
+                u32 rx_vec = (v1 & 0xffffffff);
+
+                for (i = 0; i < np->num_rx_rings; i++) {
+                        struct rx_ring_info *rp = &np->rx_rings[i];
+
+                        if (rx_vec & (1 << rp->rx_channel)) {
+                                int r = niu_rx_error(np, rp);
+                                if (r)
+                                        err = r;
+                        }
+                }
+        }
+        if (v1 & 0x7fffffff00000000ULL) {
+                u32 tx_vec = (v1 >> 32) & 0x7fffffff;
+
+                for (i = 0; i < np->num_tx_rings; i++) {
+                        struct tx_ring_info *rp = &np->tx_rings[i];
+
+                        if (tx_vec & (1 << rp->tx_channel)) {
+                                int r = niu_tx_error(np, rp);
+                                if (r)
+                                        err = r;
+                        }
+                }
+        }
+        if ((v0 | v1) & 0x8000000000000000ULL) {
+                int r = niu_mif_interrupt(np);
+                if (r)
+                        err = r;
+        }
+        if (v2) {
+                if (v2 & 0x01ef) {
+                        int r = niu_mac_interrupt(np);
+                        if (r)
+                                err = r;
+                }
+                if (v2 & 0x0210) {
+                        int r = niu_device_error(np);
+                        if (r)
+                                err = r;
+                }
+        }
+
+        if (err)
+                niu_enable_interrupts(np, 0);
+
+        return -EINVAL;
+}
+
+static void niu_rxchan_intr(struct niu *np, struct rx_ring_info *rp,
+                            int ldn)
+{
+        struct rxdma_mailbox *mbox = rp->mbox;
+        u64 stat_write, stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
+
+        stat_write = (RX_DMA_CTL_STAT_RCRTHRES |
+                      RX_DMA_CTL_STAT_RCRTO);
+        nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat_write);
+
+        niudbg(INTR, "%s: rxchan_intr stat[%llx]\n",
+               np->dev->name, (unsigned long long) stat);
+}
+
+static void niu_txchan_intr(struct niu *np, struct tx_ring_info *rp,
+                            int ldn)
+{
+        rp->tx_cs = nr64(TX_CS(rp->tx_channel));
+
+        niudbg(INTR, "%s: txchan_intr cs[%llx]\n",
+               np->dev->name, (unsigned long long) rp->tx_cs);
+}
+
+static void __niu_fastpath_interrupt(struct niu *np, int ldg, u64 v0)
+{
+        struct niu_parent *parent = np->parent;
+        u32 rx_vec, tx_vec;
+        int i;
+
+        tx_vec = (v0 >> 32);
+        rx_vec = (v0 & 0xffffffff);
+
+        for (i = 0; i < np->num_rx_rings; i++) {
+                struct rx_ring_info *rp = &np->rx_rings[i];
+                int ldn = LDN_RXDMA(rp->rx_channel);
+
+                if (parent->ldg_map[ldn] != ldg)
+                        continue;
+
+                nw64(LD_IM0(ldn), LD_IM0_MASK);
+                if (rx_vec & (1 << rp->rx_channel))
+                        niu_rxchan_intr(np, rp, ldn);
+        }
+
+        for (i = 0; i < np->num_tx_rings; i++) {
+                struct tx_ring_info *rp = &np->tx_rings[i];
+                int ldn = LDN_TXDMA(rp->tx_channel);
+
+                if (parent->ldg_map[ldn] != ldg)
+                        continue;
+
+                nw64(LD_IM0(ldn), LD_IM0_MASK);
+                if (tx_vec & (1 << rp->tx_channel))
+                        niu_txchan_intr(np, rp, ldn);
+        }
+}
+
+static void niu_schedule_napi(struct niu *np, struct niu_ldg *lp,
+                              u64 v0, u64 v1, u64 v2)
+{
+        if (likely(netif_rx_schedule_prep(np->dev, &lp->napi))) {
+                lp->v0 = v0;
+                lp->v1 = v1;
+                lp->v2 = v2;
+                __niu_fastpath_interrupt(np, lp->ldg_num, v0);
+                __netif_rx_schedule(np->dev, &lp->napi);
+        }
+}
+
+static irqreturn_t niu_interrupt(int irq, void *dev_id)
+{
+        struct niu_ldg *lp = dev_id;
+        struct niu *np = lp->np;
+        int ldg = lp->ldg_num;
+        unsigned long flags;
+        u64 v0, v1, v2;
+
+        if (netif_msg_intr(np))
+                printk(KERN_DEBUG PFX "niu_interrupt() ldg[%p](%d) ",
+                       lp, ldg);
+
+        spin_lock_irqsave(&np->lock, flags);
+
+        v0 = nr64(LDSV0(ldg));
+        v1 = nr64(LDSV1(ldg));
+        v2 = nr64(LDSV2(ldg));
+
+        if (netif_msg_intr(np))
+                printk("v0[%llx] v1[%llx] v2[%llx]\n",
+                       (unsigned long long) v0,
+                       (unsigned long long) v1,
+                       (unsigned long long) v2);
+
+        if (unlikely(!v0 && !v1 && !v2)) {
+                spin_unlock_irqrestore(&np->lock, flags);
+                return IRQ_NONE;
+        }
+
+        if (unlikely((v0 & ((u64)1 << LDN_MIF)) || v1 || v2)) {
+                int err = niu_slowpath_interrupt(np, lp);
+                if (err)
+                        goto out;
+        }
+        if (likely(v0 & ~((u64)1 << LDN_MIF)))
+                niu_schedule_napi(np, lp, v0, v1, v2);
+        else
+                niu_ldg_rearm(np, lp, 1);
+out:
+        spin_unlock_irqrestore(&np->lock, flags);
+
+        return IRQ_HANDLED;
+}
+
+static void niu_free_rx_ring_info(struct niu *np, struct rx_ring_info *rp)
+{
+        if (rp->mbox) {
+                np->ops->free_coherent(np->device,
+                                       sizeof(struct rxdma_mailbox),
+                                       rp->mbox, rp->mbox_dma);
+                rp->mbox = NULL;
+        }
+        if (rp->rcr) {
+                np->ops->free_coherent(np->device,
+                                       MAX_RCR_RING_SIZE * sizeof(__le64),
+                                       rp->rcr, rp->rcr_dma);
+                rp->rcr = NULL;
+                rp->rcr_table_size = 0;
+                rp->rcr_index = 0;
+        }
+        if (rp->rbr) {
+                niu_rbr_free(np, rp);
+
+                np->ops->free_coherent(np->device,
+                                       MAX_RBR_RING_SIZE * sizeof(__le32),
+                                       rp->rbr, rp->rbr_dma);
+                rp->rbr = NULL;
+                rp->rbr_table_size = 0;
+                rp->rbr_index = 0;
+        }
+        kfree(rp->rxhash);
+        rp->rxhash = NULL;
+}
+
+static void niu_free_tx_ring_info(struct niu *np, struct tx_ring_info *rp)
+{
+        if (rp->mbox) {
+                np->ops->free_coherent(np->device,
+                                       sizeof(struct txdma_mailbox),
+                                       rp->mbox, rp->mbox_dma);
+                rp->mbox = NULL;
+        }
+        if (rp->descr) {
+                int i;
+
+                for (i = 0; i < MAX_TX_RING_SIZE; i++) {
+                        if (rp->tx_buffs[i].skb)
+                                (void) release_tx_packet(np, rp, i);
+                }
+
+                np->ops->free_coherent(np->device,
+                                       MAX_TX_RING_SIZE * sizeof(__le64),
+                                       rp->descr, rp->descr_dma);
+                rp->descr = NULL;
+                rp->pending = 0;
+                rp->prod = 0;
+                rp->cons = 0;
+                rp->wrap_bit = 0;
+        }
+}
+
+static void niu_free_channels(struct niu *np)
+{
+        int i;
+
+        if (np->rx_rings) {
+                for (i = 0; i < np->num_rx_rings; i++) {
+                        struct rx_ring_info *rp = &np->rx_rings[i];
+
+                        niu_free_rx_ring_info(np, rp);
+                }
+                kfree(np->rx_rings);
+                np->rx_rings = NULL;
+                np->num_rx_rings = 0;
+        }
+
+        if (np->tx_rings) {
+                for (i = 0; i < np->num_tx_rings; i++) {
+                        struct tx_ring_info *rp = &np->tx_rings[i];
+
+                        niu_free_tx_ring_info(np, rp);
+                }
+                kfree(np->tx_rings);
+                np->tx_rings = NULL;
+                np->num_tx_rings = 0;
+        }
+}
+
+static int niu_alloc_rx_ring_info(struct niu *np,
+                                  struct rx_ring_info *rp)
+{
+        BUILD_BUG_ON(sizeof(struct rxdma_mailbox) != 64);
+
+        rp->rxhash = kzalloc(MAX_RBR_RING_SIZE * sizeof(struct page *),
+                             GFP_KERNEL);
+        if (!rp->rxhash)
+                return -ENOMEM;
+
+        rp->mbox = np->ops->alloc_coherent(np->device,
+                                           sizeof(struct rxdma_mailbox),
+                                           &rp->mbox_dma, GFP_KERNEL);
+        if (!rp->mbox)
+                return -ENOMEM;
+        if ((unsigned long)rp->mbox & (64UL - 1)) {
+                dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
+                        "RXDMA mailbox %p\n", np->dev->name, rp->mbox);
+                return -EINVAL;
+        }
+
+        rp->rcr = np->ops->alloc_coherent(np->device,
+                                          MAX_RCR_RING_SIZE * sizeof(__le64),
+                                          &rp->rcr_dma, GFP_KERNEL);
+        if (!rp->rcr)
+                return -ENOMEM;
+        if ((unsigned long)rp->rcr & (64UL - 1)) {
+                dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
+                        "RXDMA RCR table %p\n", np->dev->name, rp->rcr);
+                return -EINVAL;
+        }
+        rp->rcr_table_size = MAX_RCR_RING_SIZE;
+        rp->rcr_index = 0;
+
+        rp->rbr = np->ops->alloc_coherent(np->device,
+                                          MAX_RBR_RING_SIZE * sizeof(__le32),
+                                          &rp->rbr_dma, GFP_KERNEL);
+        if (!rp->rbr)
+                return -ENOMEM;
+        if ((unsigned long)rp->rbr & (64UL - 1)) {
+                dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
+                        "RXDMA RBR table %p\n", np->dev->name, rp->rbr);
+                return -EINVAL;
+        }
+        rp->rbr_table_size = MAX_RBR_RING_SIZE;
+        rp->rbr_index = 0;
+        rp->rbr_pending = 0;
+
+        return 0;
+}
+
+static void niu_set_max_burst(struct niu *np, struct tx_ring_info *rp)
+{
+        int mtu = np->dev->mtu;
+
+        /* These values are recommended by the HW designers for fair
+         * utilization of DRR amongst the rings.
+         */
+        rp->max_burst = mtu + 32;
+        if (rp->max_burst > 4096)
+                rp->max_burst = 4096;
+}
+
+static int niu_alloc_tx_ring_info(struct niu *np,
+                                  struct tx_ring_info *rp)
+{
+        BUILD_BUG_ON(sizeof(struct txdma_mailbox) != 64);
+
+        rp->mbox = np->ops->alloc_coherent(np->device,
+                                           sizeof(struct txdma_mailbox),
+                                           &rp->mbox_dma, GFP_KERNEL);
+        if (!rp->mbox)
+                return -ENOMEM;
+        if ((unsigned long)rp->mbox & (64UL - 1)) {
+                dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
+                        "TXDMA mailbox %p\n", np->dev->name, rp->mbox);
+                return -EINVAL;
+        }
+
+        rp->descr = np->ops->alloc_coherent(np->device,
+                                            MAX_TX_RING_SIZE * sizeof(__le64),
+                                            &rp->descr_dma, GFP_KERNEL);
+        if (!rp->descr)
+                return -ENOMEM;
+        if ((unsigned long)rp->descr & (64UL - 1)) {
+                dev_err(np->device, PFX "%s: Coherent alloc gives misaligned "
+                        "TXDMA descr table %p\n", np->dev->name, rp->descr);
+                return -EINVAL;
+        }
+
+        rp->pending = MAX_TX_RING_SIZE;
+        rp->prod = 0;
+        rp->cons = 0;
+        rp->wrap_bit = 0;
+
+        /* XXX make these configurable... XXX */
+        rp->mark_freq = rp->pending / 4;
+
+        niu_set_max_burst(np, rp);
+
+        return 0;
+}
+
+static void niu_size_rbr(struct niu *np, struct rx_ring_info *rp)
+{
+        u16 bs;
+
+        switch (PAGE_SIZE) {
+        case 4 * 1024:
+        case 8 * 1024:
+        case 16 * 1024:
+        case 32 * 1024:
+                rp->rbr_block_size = PAGE_SIZE;
+                rp->rbr_blocks_per_page = 1;
+                break;
+
+        default:
+                if (PAGE_SIZE % (32 * 1024) == 0)
+                        bs = 32 * 1024;
+                else if (PAGE_SIZE % (16 * 1024) == 0)
+                        bs = 16 * 1024;
+                else if (PAGE_SIZE % (8 * 1024) == 0)
+                        bs = 8 * 1024;
+                else if (PAGE_SIZE % (4 * 1024) == 0)
+                        bs = 4 * 1024;
+                else
+                        BUG();
+                rp->rbr_block_size = bs;
+                rp->rbr_blocks_per_page = PAGE_SIZE / bs;
+        }
+
+        rp->rbr_sizes[0] = 256;
+        rp->rbr_sizes[1] = 1024;
+        if (np->dev->mtu > ETH_DATA_LEN) {
+                switch (PAGE_SIZE) {
+                case 4 * 1024:
+                        rp->rbr_sizes[2] = 4096;
+                        break;
+
+                default:
+                        rp->rbr_sizes[2] = 8192;
+                        break;
+                }
+        } else {
+                rp->rbr_sizes[2] = 2048;
+        }
+        rp->rbr_sizes[3] = rp->rbr_block_size;
+}
+
+static int niu_alloc_channels(struct niu *np)
+{
+        struct niu_parent *parent = np->parent;
+        int first_rx_channel, first_tx_channel;
+        int i, port, err;
+
+        port = np->port;
+        first_rx_channel = first_tx_channel = 0;
+        for (i = 0; i < port; i++) {
+                first_rx_channel += parent->rxchan_per_port[i];
+                first_tx_channel += parent->txchan_per_port[i];
+        }
+
+        np->num_rx_rings = parent->rxchan_per_port[port];
+        np->num_tx_rings = parent->txchan_per_port[port];
+
+        np->rx_rings = kzalloc(np->num_rx_rings * sizeof(struct rx_ring_info),
+                               GFP_KERNEL);
+        err = -ENOMEM;
+        if (!np->rx_rings)
+                goto out_err;
+
+        for (i = 0; i < np->num_rx_rings; i++) {
+                struct rx_ring_info *rp = &np->rx_rings[i];
+
+                rp->np = np;
+                rp->rx_channel = first_rx_channel + i;
+
+                err = niu_alloc_rx_ring_info(np, rp);
+                if (err)
+                        goto out_err;
+
+                niu_size_rbr(np, rp);
+
+                /* XXX better defaults, configurable, etc... XXX */
+                rp->nonsyn_window = 64;
+                rp->nonsyn_threshold = rp->rcr_table_size - 64;
+                rp->syn_window = 64;
+                rp->syn_threshold = rp->rcr_table_size - 64;
+                rp->rcr_pkt_threshold = 16;
+                rp->rcr_timeout = 8;
+                rp->rbr_kick_thresh = RBR_REFILL_MIN;
+                if (rp->rbr_kick_thresh < rp->rbr_blocks_per_page)
+                        rp->rbr_kick_thresh = rp->rbr_blocks_per_page;
+
+                err = niu_rbr_fill(np, rp, GFP_KERNEL);
+                if (err)
+                        return err;
+        }
+
+        np->tx_rings = kzalloc(np->num_tx_rings * sizeof(struct tx_ring_info),
+                               GFP_KERNEL);
+        err = -ENOMEM;
+        if (!np->tx_rings)
+                goto out_err;
+
+        for (i = 0; i < np->num_tx_rings; i++) {
+                struct tx_ring_info *rp = &np->tx_rings[i];
+
+                rp->np = np;
+                rp->tx_channel = first_tx_channel + i;
+
+                err = niu_alloc_tx_ring_info(np, rp);
+                if (err)
+                        goto out_err;
+        }
+
+        return 0;
+
+out_err:
+        niu_free_channels(np);
+        return err;
+}
+
+static int niu_tx_cs_sng_poll(struct niu *np, int channel)
+{
+        int limit = 1000;
+
+        while (--limit > 0) {
+                u64 val = nr64(TX_CS(channel));
+                if (val & TX_CS_SNG_STATE)
+                        return 0;
+        }
+        return -ENODEV;
+}
+
+static int niu_tx_channel_stop(struct niu *np, int channel)
+{
+        u64 val = nr64(TX_CS(channel));
+
+        val |= TX_CS_STOP_N_GO;
+        nw64(TX_CS(channel), val);
+
+        return niu_tx_cs_sng_poll(np, channel);
+}
+
+static int niu_tx_cs_reset_poll(struct niu *np, int channel)
+{
+        int limit = 1000;
+
+        while (--limit > 0) {
+                u64 val = nr64(TX_CS(channel));
+                if (!(val & TX_CS_RST))
+                        return 0;
+        }
+        return -ENODEV;
+}
+
+static int niu_tx_channel_reset(struct niu *np, int channel)
+{
+        u64 val = nr64(TX_CS(channel));
+        int err;
+
+        val |= TX_CS_RST;
+        nw64(TX_CS(channel), val);
+
+        err = niu_tx_cs_reset_poll(np, channel);
+        if (!err)
+                nw64(TX_RING_KICK(channel), 0);
+
+        return err;
+}
+
+static int niu_tx_channel_lpage_init(struct niu *np, int channel)
+{
+        u64 val;
+
+        nw64(TX_LOG_MASK1(channel), 0);
+        nw64(TX_LOG_VAL1(channel), 0);
+        nw64(TX_LOG_MASK2(channel), 0);
+        nw64(TX_LOG_VAL2(channel), 0);
+        nw64(TX_LOG_PAGE_RELO1(channel), 0);
+        nw64(TX_LOG_PAGE_RELO2(channel), 0);
+        nw64(TX_LOG_PAGE_HDL(channel), 0);
+
+        val  = (u64)np->port << TX_LOG_PAGE_VLD_FUNC_SHIFT;
+        val |= (TX_LOG_PAGE_VLD_PAGE0 | TX_LOG_PAGE_VLD_PAGE1);
+        nw64(TX_LOG_PAGE_VLD(channel), val);
+
+        /* XXX TXDMA 32bit mode? XXX */
+
+        return 0;
+}
+
+static void niu_txc_enable_port(struct niu *np, int on)
+{
+        unsigned long flags;
+        u64 val, mask;
+
+        niu_lock_parent(np, flags);
+        val = nr64(TXC_CONTROL);
+        mask = (u64)1 << np->port;
+        if (on) {
+                val |= TXC_CONTROL_ENABLE | mask;
+        } else {
+                val &= ~mask;
+                if ((val & ~TXC_CONTROL_ENABLE) == 0)
+                        val &= ~TXC_CONTROL_ENABLE;
+        }
+        nw64(TXC_CONTROL, val);
+        niu_unlock_parent(np, flags);
+}
+
+static void niu_txc_set_imask(struct niu *np, u64 imask)
+{
+        unsigned long flags;
+        u64 val;
+
+        niu_lock_parent(np, flags);
+        val = nr64(TXC_INT_MASK);
+        val &= ~TXC_INT_MASK_VAL(np->port);
+        val |= (imask << TXC_INT_MASK_VAL_SHIFT(np->port));
+        niu_unlock_parent(np, flags);
+}
+
+static void niu_txc_port_dma_enable(struct niu *np, int on)
+{
+        u64 val = 0;
+
+        if (on) {
+                int i;
+
+                for (i = 0; i < np->num_tx_rings; i++)
+                        val |= (1 << np->tx_rings[i].tx_channel);
+        }
+        nw64(TXC_PORT_DMA(np->port), val);
+}
+
+static int niu_init_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
+{
+        int err, channel = rp->tx_channel;
+        u64 val, ring_len;
+
+        err = niu_tx_channel_stop(np, channel);
+        if (err)
+                return err;
+
+        err = niu_tx_channel_reset(np, channel);
+        if (err)
+                return err;
+
+        err = niu_tx_channel_lpage_init(np, channel);
+        if (err)
+                return err;
+
+        nw64(TXC_DMA_MAX(channel), rp->max_burst);
+        nw64(TX_ENT_MSK(channel), 0);
+
+        if (rp->descr_dma & ~(TX_RNG_CFIG_STADDR_BASE |
+                              TX_RNG_CFIG_STADDR)) {
+                dev_err(np->device, PFX "%s: TX ring channel %d "
+                        "DMA addr (%llx) is not aligned.\n",
+                        np->dev->name, channel,
+                        (unsigned long long) rp->descr_dma);
+                return -EINVAL;
+        }
+
+        /* The length field in TX_RNG_CFIG is measured in 64-byte
+         * blocks.  rp->pending is the number of TX descriptors in
+         * our ring, 8 bytes each, thus we divide by 8 bytes more
+         * to get the proper value the chip wants.
+         */
+        ring_len = (rp->pending / 8);
+
+        val = ((ring_len << TX_RNG_CFIG_LEN_SHIFT) |
+               rp->descr_dma);
+        nw64(TX_RNG_CFIG(channel), val);
+
+        if (((rp->mbox_dma >> 32) & ~TXDMA_MBH_MBADDR) ||
+            ((u32)rp->mbox_dma & ~TXDMA_MBL_MBADDR)) {
+                dev_err(np->device, PFX "%s: TX ring channel %d "
+                        "MBOX addr (%llx) is has illegal bits.\n",
+                        np->dev->name, channel,
+                        (unsigned long long) rp->mbox_dma);
+                return -EINVAL;
+        }
+        nw64(TXDMA_MBH(channel), rp->mbox_dma >> 32);
+        nw64(TXDMA_MBL(channel), rp->mbox_dma & TXDMA_MBL_MBADDR);
+
+        nw64(TX_CS(channel), 0);
+
+        rp->last_pkt_cnt = 0;
+
+        return 0;
+}
+
+static void niu_init_rdc_groups(struct niu *np)
+{
+        struct niu_rdc_tables *tp = &np->parent->rdc_group_cfg[np->port];
+        int i, first_table_num = tp->first_table_num;
+
+        for (i = 0; i < tp->num_tables; i++) {
+                struct rdc_table *tbl = &tp->tables[i];
+                int this_table = first_table_num + i;
+                int slot;
+
+                for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++)
+                        nw64(RDC_TBL(this_table, slot),
+                             tbl->rxdma_channel[slot]);
+        }
+
+        nw64(DEF_RDC(np->port), np->parent->rdc_default[np->port]);
+}
+
+static void niu_init_drr_weight(struct niu *np)
+{
+        int type = phy_decode(np->parent->port_phy, np->port);
+        u64 val;
+
+        switch (type) {
+        case PORT_TYPE_10G:
+                val = PT_DRR_WEIGHT_DEFAULT_10G;
+                break;
+
+        case PORT_TYPE_1G:
+        default:
+                val = PT_DRR_WEIGHT_DEFAULT_1G;
+                break;
+        }
+        nw64(PT_DRR_WT(np->port), val);
+}
+
+static int niu_init_hostinfo(struct niu *np)
+{
+        struct niu_parent *parent = np->parent;
+        struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
+        int i, err, num_alt = niu_num_alt_addr(np);
+        int first_rdc_table = tp->first_table_num;
+
+        err = niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
+        if (err)
+                return err;
+
+        err = niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
+        if (err)
+                return err;
+
+        for (i = 0; i < num_alt; i++) {
+                err = niu_set_alt_mac_rdc_table(np, i, first_rdc_table, 1);
+                if (err)
+                        return err;
+        }
+
+        return 0;
+}
+
+static int niu_rx_channel_reset(struct niu *np, int channel)
+{
+        return niu_set_and_wait_clear(np, RXDMA_CFIG1(channel),
+                                      RXDMA_CFIG1_RST, 1000, 10,
+                                      "RXDMA_CFIG1");
+}
+
+static int niu_rx_channel_lpage_init(struct niu *np, int channel)
+{
+        u64 val;
+
+        nw64(RX_LOG_MASK1(channel), 0);
+        nw64(RX_LOG_VAL1(channel), 0);
+        nw64(RX_LOG_MASK2(channel), 0);
+        nw64(RX_LOG_VAL2(channel), 0);
+        nw64(RX_LOG_PAGE_RELO1(channel), 0);
+        nw64(RX_LOG_PAGE_RELO2(channel), 0);
+        nw64(RX_LOG_PAGE_HDL(channel), 0);
+
+        val  = (u64)np->port << RX_LOG_PAGE_VLD_FUNC_SHIFT;
+        val |= (RX_LOG_PAGE_VLD_PAGE0 | RX_LOG_PAGE_VLD_PAGE1);
+        nw64(RX_LOG_PAGE_VLD(channel), val);
+
+        return 0;
+}
+
+static void niu_rx_channel_wred_init(struct niu *np, struct rx_ring_info *rp)
+{
+        u64 val;
+
+        val = (((u64)rp->nonsyn_window << RDC_RED_PARA_WIN_SHIFT) |
+               ((u64)rp->nonsyn_threshold << RDC_RED_PARA_THRE_SHIFT) |
+               ((u64)rp->syn_window << RDC_RED_PARA_WIN_SYN_SHIFT) |
+               ((u64)rp->syn_threshold << RDC_RED_PARA_THRE_SYN_SHIFT));
+        nw64(RDC_RED_PARA(rp->rx_channel), val);
+}
+
+static int niu_compute_rbr_cfig_b(struct rx_ring_info *rp, u64 *ret)
+{
+        u64 val = 0;
+
+        switch (rp->rbr_block_size) {
+        case 4 * 1024:
+                val |= (RBR_BLKSIZE_4K << RBR_CFIG_B_BLKSIZE_SHIFT);
+                break;
+        case 8 * 1024:
+                val |= (RBR_BLKSIZE_8K << RBR_CFIG_B_BLKSIZE_SHIFT);
+                break;
+        case 16 * 1024:
+                val |= (RBR_BLKSIZE_16K << RBR_CFIG_B_BLKSIZE_SHIFT);
+                break;
+        case 32 * 1024:
+                val |= (RBR_BLKSIZE_32K << RBR_CFIG_B_BLKSIZE_SHIFT);
+                break;
+        default:
+                return -EINVAL;
+        }
+        val |= RBR_CFIG_B_VLD2;
+        switch (rp->rbr_sizes[2]) {
+        case 2 * 1024:
+                val |= (RBR_BUFSZ2_2K << RBR_CFIG_B_BUFSZ2_SHIFT);
+                break;
+        case 4 * 1024:
+                val |= (RBR_BUFSZ2_4K << RBR_CFIG_B_BUFSZ2_SHIFT);
+                break;
+        case 8 * 1024:
+                val |= (RBR_BUFSZ2_8K << RBR_CFIG_B_BUFSZ2_SHIFT);
+                break;
+        case 16 * 1024:
+                val |= (RBR_BUFSZ2_16K << RBR_CFIG_B_BUFSZ2_SHIFT);
+                break;
+
+        default:
+                return -EINVAL;
+        }
+        val |= RBR_CFIG_B_VLD1;
+        switch (rp->rbr_sizes[1]) {
+        case 1 * 1024:
+                val |= (RBR_BUFSZ1_1K << RBR_CFIG_B_BUFSZ1_SHIFT);
+                break;
+        case 2 * 1024:
+                val |= (RBR_BUFSZ1_2K << RBR_CFIG_B_BUFSZ1_SHIFT);
+                break;
+        case 4 * 1024:
+                val |= (RBR_BUFSZ1_4K << RBR_CFIG_B_BUFSZ1_SHIFT);
+                break;
+        case 8 * 1024:
+                val |= (RBR_BUFSZ1_8K << RBR_CFIG_B_BUFSZ1_SHIFT);
+                break;
+
+        default:
+                return -EINVAL;
+        }
+        val |= RBR_CFIG_B_VLD0;
+        switch (rp->rbr_sizes[0]) {
+        case 256:
+                val |= (RBR_BUFSZ0_256 << RBR_CFIG_B_BUFSZ0_SHIFT);
+                break;
+        case 512:
+                val |= (RBR_BUFSZ0_512 << RBR_CFIG_B_BUFSZ0_SHIFT);
+                break;
+        case 1 * 1024:
+                val |= (RBR_BUFSZ0_1K << RBR_CFIG_B_BUFSZ0_SHIFT);
+                break;
+        case 2 * 1024:
+                val |= (RBR_BUFSZ0_2K << RBR_CFIG_B_BUFSZ0_SHIFT);
+                break;
+
+        default:
+                return -EINVAL;
+        }
+
+        *ret = val;
+        return 0;
+}
+
+static int niu_enable_rx_channel(struct niu *np, int channel, int on)
+{
+        u64 val = nr64(RXDMA_CFIG1(channel));
+        int limit;
+
+        if (on)
+                val |= RXDMA_CFIG1_EN;
+        else
+                val &= ~RXDMA_CFIG1_EN;
+        nw64(RXDMA_CFIG1(channel), val);
+
+        limit = 1000;
+        while (--limit > 0) {
+                if (nr64(RXDMA_CFIG1(channel)) & RXDMA_CFIG1_QST)
+                        break;
+                udelay(10);
+        }
+        if (limit <= 0)
+                return -ENODEV;
+        return 0;
+}
+
+static int niu_init_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
+{
+        int err, channel = rp->rx_channel;
+        u64 val;
+
+        err = niu_rx_channel_reset(np, channel);
+        if (err)
+                return err;
+
+        err = niu_rx_channel_lpage_init(np, channel);
+        if (err)
+                return err;
+
+        niu_rx_channel_wred_init(np, rp);
+
+        nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_RBR_EMPTY);
+        nw64(RX_DMA_CTL_STAT(channel),
+             (RX_DMA_CTL_STAT_MEX |
+              RX_DMA_CTL_STAT_RCRTHRES |
+              RX_DMA_CTL_STAT_RCRTO |
+              RX_DMA_CTL_STAT_RBR_EMPTY));
+        nw64(RXDMA_CFIG1(channel), rp->mbox_dma >> 32);
+        nw64(RXDMA_CFIG2(channel), (rp->mbox_dma & 0x00000000ffffffc0));
+        nw64(RBR_CFIG_A(channel),
+             ((u64)rp->rbr_table_size << RBR_CFIG_A_LEN_SHIFT) |
+             (rp->rbr_dma & (RBR_CFIG_A_STADDR_BASE | RBR_CFIG_A_STADDR)));
+        err = niu_compute_rbr_cfig_b(rp, &val);
+        if (err)
+                return err;
+        nw64(RBR_CFIG_B(channel), val);
+        nw64(RCRCFIG_A(channel),
+             ((u64)rp->rcr_table_size << RCRCFIG_A_LEN_SHIFT) |
+             (rp->rcr_dma & (RCRCFIG_A_STADDR_BASE | RCRCFIG_A_STADDR)));
+        nw64(RCRCFIG_B(channel),
+             ((u64)rp->rcr_pkt_threshold << RCRCFIG_B_PTHRES_SHIFT) |
+             RCRCFIG_B_ENTOUT |
+             ((u64)rp->rcr_timeout << RCRCFIG_B_TIMEOUT_SHIFT));
+
+        err = niu_enable_rx_channel(np, channel, 1);
+        if (err)
+                return err;
+
+        nw64(RBR_KICK(channel), rp->rbr_index);
+
+        val = nr64(RX_DMA_CTL_STAT(channel));
+        val |= RX_DMA_CTL_STAT_RBR_EMPTY;
+        nw64(RX_DMA_CTL_STAT(channel), val);
+
+        return 0;
+}
+
+static int niu_init_rx_channels(struct niu *np)
+{
+        unsigned long flags;
+        u64 seed = jiffies_64;
+        int err, i;
+
+        niu_lock_parent(np, flags);
+        nw64(RX_DMA_CK_DIV, np->parent->rxdma_clock_divider);
+        nw64(RED_RAN_INIT, RED_RAN_INIT_OPMODE | (seed & RED_RAN_INIT_VAL));
+        niu_unlock_parent(np, flags);
+
+        /* XXX RXDMA 32bit mode? XXX */
+
+        niu_init_rdc_groups(np);
+        niu_init_drr_weight(np);
+
+        err = niu_init_hostinfo(np);
+        if (err)
+                return err;
+
+        for (i = 0; i < np->num_rx_rings; i++) {
+                struct rx_ring_info *rp = &np->rx_rings[i];
+
+                err = niu_init_one_rx_channel(np, rp);
+                if (err)
+                        return err;
+        }
+
+        return 0;
+}
+
+static int niu_set_ip_frag_rule(struct niu *np)
+{
+        struct niu_parent *parent = np->parent;
+        struct niu_classifier *cp = &np->clas;
+        struct niu_tcam_entry *tp;
+        int index, err;
+
+        /* XXX fix this allocation scheme XXX */
+        index = cp->tcam_index;
+        tp = &parent->tcam[index];
+
+        /* Note that the noport bit is the same in both ipv4 and
+         * ipv6 format TCAM entries.
+         */
+        memset(tp, 0, sizeof(*tp));
+        tp->key[1] = TCAM_V4KEY1_NOPORT;
+        tp->key_mask[1] = TCAM_V4KEY1_NOPORT;
+        tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET |
+                          ((u64)0 << TCAM_ASSOCDATA_OFFSET_SHIFT));
+        err = tcam_write(np, index, tp->key, tp->key_mask);
+        if (err)
+                return err;
+        err = tcam_assoc_write(np, index, tp->assoc_data);
+        if (err)
+                return err;
+
+        return 0;
+}
+
+static int niu_init_classifier_hw(struct niu *np)
+{
+        struct niu_parent *parent = np->parent;
+        struct niu_classifier *cp = &np->clas;
+        int i, err;
+
+        nw64(H1POLY, cp->h1_init);
+        nw64(H2POLY, cp->h2_init);
+
+        err = niu_init_hostinfo(np);
+        if (err)
+                return err;
+
+        for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++) {
+                struct niu_vlan_rdc *vp = &cp->vlan_mappings[i];
+
+                vlan_tbl_write(np, i, np->port,
+                               vp->vlan_pref, vp->rdc_num);
+        }
+
+        for (i = 0; i < cp->num_alt_mac_mappings; i++) {
+                struct niu_altmac_rdc *ap = &cp->alt_mac_mappings[i];
+
+                err = niu_set_alt_mac_rdc_table(np, ap->alt_mac_num,
+                                                ap->rdc_num, ap->mac_pref);
+                if (err)
+                        return err;
+        }
+
+        for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
+                int index = i - CLASS_CODE_USER_PROG1;
+
+                err = niu_set_tcam_key(np, i, parent->tcam_key[index]);
+                if (err)
+                        return err;
+                err = niu_set_flow_key(np, i, parent->flow_key[index]);
+                if (err)
+                        return err;
+        }
+
+        err = niu_set_ip_frag_rule(np);
+        if (err)
+                return err;
+
+        tcam_enable(np, 1);
+
+        return 0;
+}
+
+static int niu_zcp_write(struct niu *np, int index, u64 *data)
+{
+        nw64(ZCP_RAM_DATA0, data[0]);
+        nw64(ZCP_RAM_DATA1, data[1]);
+        nw64(ZCP_RAM_DATA2, data[2]);
+        nw64(ZCP_RAM_DATA3, data[3]);
+        nw64(ZCP_RAM_DATA4, data[4]);
+        nw64(ZCP_RAM_BE, ZCP_RAM_BE_VAL);
+        nw64(ZCP_RAM_ACC,
+             (ZCP_RAM_ACC_WRITE |
+              (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
+              (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
+
+        return niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
+                                   1000, 100);
+}
+
+static int niu_zcp_read(struct niu *np, int index, u64 *data)
+{
+        int err;
+
+        err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
+                                  1000, 100);
+        if (err) {
+                dev_err(np->device, PFX "%s: ZCP read busy won't clear, "
+                        "ZCP_RAM_ACC[%llx]\n", np->dev->name,
+                        (unsigned long long) nr64(ZCP_RAM_ACC));
+                return err;
+        }
+
+        nw64(ZCP_RAM_ACC,
+             (ZCP_RAM_ACC_READ |
+              (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
+              (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
+
+        err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
+                                  1000, 100);
+        if (err) {
+                dev_err(np->device, PFX "%s: ZCP read busy2 won't clear, "
+                        "ZCP_RAM_ACC[%llx]\n", np->dev->name,
+                        (unsigned long long) nr64(ZCP_RAM_ACC));
+                return err;
+        }
+
+        data[0] = nr64(ZCP_RAM_DATA0);
+        data[1] = nr64(ZCP_RAM_DATA1);
+        data[2] = nr64(ZCP_RAM_DATA2);
+        data[3] = nr64(ZCP_RAM_DATA3);
+        data[4] = nr64(ZCP_RAM_DATA4);
+
+        return 0;
+}
+
+static void niu_zcp_cfifo_reset(struct niu *np)
+{
+        u64 val = nr64(RESET_CFIFO);
+
+        val |= RESET_CFIFO_RST(np->port);
+        nw64(RESET_CFIFO, val);
+        udelay(10);
+
+        val &= ~RESET_CFIFO_RST(np->port);
+        nw64(RESET_CFIFO, val);
+}
+
+static int niu_init_zcp(struct niu *np)
+{
+        u64 data[5], rbuf[5];
+        int i, max, err;
+
+        if (np->parent->plat_type != PLAT_TYPE_NIU) {
+                if (np->port == 0 || np->port == 1)
+                        max = ATLAS_P0_P1_CFIFO_ENTRIES;
+                else
+                        max = ATLAS_P2_P3_CFIFO_ENTRIES;
+        } else
+                max = NIU_CFIFO_ENTRIES;
+
+        data[0] = 0;
+        data[1] = 0;
+        data[2] = 0;
+        data[3] = 0;
+        data[4] = 0;
+
+        for (i = 0; i < max; i++) {
+                err = niu_zcp_write(np, i, data);
+                if (err)
+                        return err;
+                err = niu_zcp_read(np, i, rbuf);
+                if (err)
+                        return err;
+        }
+
+        niu_zcp_cfifo_reset(np);
+        nw64(CFIFO_ECC(np->port), 0);
+        nw64(ZCP_INT_STAT, ZCP_INT_STAT_ALL);
+        (void) nr64(ZCP_INT_STAT);
+        nw64(ZCP_INT_MASK, ZCP_INT_MASK_ALL);
+
+        return 0;
+}
+
+static void niu_ipp_write(struct niu *np, int index, u64 *data)
+{
+        u64 val = nr64_ipp(IPP_CFIG);
+
+        nw64_ipp(IPP_CFIG, val | IPP_CFIG_DFIFO_PIO_W);
+        nw64_ipp(IPP_DFIFO_WR_PTR, index);
+        nw64_ipp(IPP_DFIFO_WR0, data[0]);
+        nw64_ipp(IPP_DFIFO_WR1, data[1]);
+        nw64_ipp(IPP_DFIFO_WR2, data[2]);
+        nw64_ipp(IPP_DFIFO_WR3, data[3]);
+        nw64_ipp(IPP_DFIFO_WR4, data[4]);
+        nw64_ipp(IPP_CFIG, val & ~IPP_CFIG_DFIFO_PIO_W);
+}
+
+static void niu_ipp_read(struct niu *np, int index, u64 *data)
+{
+        nw64_ipp(IPP_DFIFO_RD_PTR, index);
+        data[0] = nr64_ipp(IPP_DFIFO_RD0);
+        data[1] = nr64_ipp(IPP_DFIFO_RD1);
+        data[2] = nr64_ipp(IPP_DFIFO_RD2);
+        data[3] = nr64_ipp(IPP_DFIFO_RD3);
+        data[4] = nr64_ipp(IPP_DFIFO_RD4);
+}
+
+static int niu_ipp_reset(struct niu *np)
+{
+        return niu_set_and_wait_clear_ipp(np, IPP_CFIG, IPP_CFIG_SOFT_RST,
+                                          1000, 100, "IPP_CFIG");
+}
+
+static int niu_init_ipp(struct niu *np)
+{
+        u64 data[5], rbuf[5], val;
+        int i, max, err;
+
+        if (np->parent->plat_type != PLAT_TYPE_NIU) {
+                if (np->port == 0 || np->port == 1)
+                        max = ATLAS_P0_P1_DFIFO_ENTRIES;
+                else
+                        max = ATLAS_P2_P3_DFIFO_ENTRIES;
+        } else
+                max = NIU_DFIFO_ENTRIES;
+
+        data[0] = 0;
+        data[1] = 0;
+        data[2] = 0;
+        data[3] = 0;
+        data[4] = 0;
+
+        for (i = 0; i < max; i++) {
+                niu_ipp_write(np, i, data);
+                niu_ipp_read(np, i, rbuf);
+        }
+
+        (void) nr64_ipp(IPP_INT_STAT);
+        (void) nr64_ipp(IPP_INT_STAT);
+
+        err = niu_ipp_reset(np);
+        if (err)
+                return err;
+
+        (void) nr64_ipp(IPP_PKT_DIS);
+        (void) nr64_ipp(IPP_BAD_CS_CNT);
+        (void) nr64_ipp(IPP_ECC);
+
+        (void) nr64_ipp(IPP_INT_STAT);
+
+        nw64_ipp(IPP_MSK, ~IPP_MSK_ALL);
+
+        val = nr64_ipp(IPP_CFIG);
+        val &= ~IPP_CFIG_IP_MAX_PKT;
+        val |= (IPP_CFIG_IPP_ENABLE |
+                IPP_CFIG_DFIFO_ECC_EN |
+                IPP_CFIG_DROP_BAD_CRC |
+                IPP_CFIG_CKSUM_EN |
+                (0x1ffff << IPP_CFIG_IP_MAX_PKT_SHIFT));
+        nw64_ipp(IPP_CFIG, val);
+
+        return 0;
+}
+
+static void niu_init_xif_xmac(struct niu *np)
+{
+        struct niu_link_config *lp = &np->link_config;
+        u64 val;
+
+        val = nr64_mac(XMAC_CONFIG);
+
+        if ((np->flags & NIU_FLAGS_10G) != 0 &&
+            (np->flags & NIU_FLAGS_FIBER) != 0) {
+                if (netif_carrier_ok(np->dev)) {
+                        val |= XMAC_CONFIG_LED_POLARITY;
+                        val &= ~XMAC_CONFIG_FORCE_LED_ON;
+                } else {
+                        val |= XMAC_CONFIG_FORCE_LED_ON;
+                        val &= ~XMAC_CONFIG_LED_POLARITY;
+                }
+        }
+
+        val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
+
+        val |= XMAC_CONFIG_TX_OUTPUT_EN;
+
+        if (lp->loopback_mode == LOOPBACK_MAC) {
+                val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
+                val |= XMAC_CONFIG_LOOPBACK;
+        } else {
+                val &= ~XMAC_CONFIG_LOOPBACK;
+        }
+
+        if (np->flags & NIU_FLAGS_10G) {
+                val &= ~XMAC_CONFIG_LFS_DISABLE;
+        } else {
+                val |= XMAC_CONFIG_LFS_DISABLE;
+                if (!(np->flags & NIU_FLAGS_FIBER))
+                        val |= XMAC_CONFIG_1G_PCS_BYPASS;
+                else
+                        val &= ~XMAC_CONFIG_1G_PCS_BYPASS;
+        }
+
+        val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
+
+        if (lp->active_speed == SPEED_100)
+                val |= XMAC_CONFIG_SEL_CLK_25MHZ;
+        else
+                val &= ~XMAC_CONFIG_SEL_CLK_25MHZ;
+
+        nw64_mac(XMAC_CONFIG, val);
+
+        val = nr64_mac(XMAC_CONFIG);
+        val &= ~XMAC_CONFIG_MODE_MASK;
+        if (np->flags & NIU_FLAGS_10G) {
+                val |= XMAC_CONFIG_MODE_XGMII;
+        } else {
+                if (lp->active_speed == SPEED_100)
+                        val |= XMAC_CONFIG_MODE_MII;
+                else
+                        val |= XMAC_CONFIG_MODE_GMII;
+        }
+
+        nw64_mac(XMAC_CONFIG, val);
+}
+
+static void niu_init_xif_bmac(struct niu *np)
+{
+        struct niu_link_config *lp = &np->link_config;
+        u64 val;
+
+        val = BMAC_XIF_CONFIG_TX_OUTPUT_EN;
+
+        if (lp->loopback_mode == LOOPBACK_MAC)
+                val |= BMAC_XIF_CONFIG_MII_LOOPBACK;
+        else
+                val &= ~BMAC_XIF_CONFIG_MII_LOOPBACK;
+
+        if (lp->active_speed == SPEED_1000)
+                val |= BMAC_XIF_CONFIG_GMII_MODE;
+        else
+                val &= ~BMAC_XIF_CONFIG_GMII_MODE;
+
+        val &= ~(BMAC_XIF_CONFIG_LINK_LED |
+                 BMAC_XIF_CONFIG_LED_POLARITY);
+
+        if (!(np->flags & NIU_FLAGS_10G) &&
+            !(np->flags & NIU_FLAGS_FIBER) &&
+            lp->active_speed == SPEED_100)
+                val |= BMAC_XIF_CONFIG_25MHZ_CLOCK;
+        else
+                val &= ~BMAC_XIF_CONFIG_25MHZ_CLOCK;
+
+        nw64_mac(BMAC_XIF_CONFIG, val);
+}
+
+static void niu_init_xif(struct niu *np)
+{
+        if (np->flags & NIU_FLAGS_XMAC)
+                niu_init_xif_xmac(np);
+        else
+                niu_init_xif_bmac(np);
+}
+
+static void niu_pcs_mii_reset(struct niu *np)
+{
+        u64 val = nr64_pcs(PCS_MII_CTL);
+        val |= PCS_MII_CTL_RST;
+        nw64_pcs(PCS_MII_CTL, val);
+}
+
+static void niu_xpcs_reset(struct niu *np)
+{
+        u64 val = nr64_xpcs(XPCS_CONTROL1);
+        val |= XPCS_CONTROL1_RESET;
+        nw64_xpcs(XPCS_CONTROL1, val);
+}
+
+static int niu_init_pcs(struct niu *np)
+{
+        struct niu_link_config *lp = &np->link_config;
+        u64 val;
+
+        switch (np->flags & (NIU_FLAGS_10G | NIU_FLAGS_FIBER)) {
+        case NIU_FLAGS_FIBER:
+                /* 1G fiber */
+                nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
+                nw64_pcs(PCS_DPATH_MODE, 0);
+                niu_pcs_mii_reset(np);
+                break;
+
+        case NIU_FLAGS_10G:
+        case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
+                if (!(np->flags & NIU_FLAGS_XMAC))
+                        return -EINVAL;
+
+                /* 10G copper or fiber */
+                val = nr64_mac(XMAC_CONFIG);
+                val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
+                nw64_mac(XMAC_CONFIG, val);
+
+                niu_xpcs_reset(np);
+
+                val = nr64_xpcs(XPCS_CONTROL1);
+                if (lp->loopback_mode == LOOPBACK_PHY)
+                        val |= XPCS_CONTROL1_LOOPBACK;
+                else
+                        val &= ~XPCS_CONTROL1_LOOPBACK;
+                nw64_xpcs(XPCS_CONTROL1, val);
+
+                nw64_xpcs(XPCS_DESKEW_ERR_CNT, 0);
+                (void) nr64_xpcs(XPCS_SYMERR_CNT01);
+                (void) nr64_xpcs(XPCS_SYMERR_CNT23);
+                break;
+
+        case 0:
+                /* 1G copper */
+                nw64_pcs(PCS_DPATH_MODE, PCS_DPATH_MODE_MII);
+                niu_pcs_mii_reset(np);
+                break;
+
+        default:
+                return -EINVAL;
+        }
+
+        return 0;
+}
+
+static int niu_reset_tx_xmac(struct niu *np)
+{
+        return niu_set_and_wait_clear_mac(np, XTXMAC_SW_RST,
+                                          (XTXMAC_SW_RST_REG_RS |
+                                           XTXMAC_SW_RST_SOFT_RST),
+                                          1000, 100, "XTXMAC_SW_RST");
+}
+
+static int niu_reset_tx_bmac(struct niu *np)
+{
+        int limit;
+
+        nw64_mac(BTXMAC_SW_RST, BTXMAC_SW_RST_RESET);
+        limit = 1000;
+        while (--limit >= 0) {
+                if (!(nr64_mac(BTXMAC_SW_RST) & BTXMAC_SW_RST_RESET))
+                        break;
+                udelay(100);
+        }
+        if (limit < 0) {
+                dev_err(np->device, PFX "Port %u TX BMAC would not reset, "
+                        "BTXMAC_SW_RST[%llx]\n",
+                        np->port,
+                        (unsigned long long) nr64_mac(BTXMAC_SW_RST));
+                return -ENODEV;
+        }
+
+        return 0;
+}
+
+static int niu_reset_tx_mac(struct niu *np)
+{
+        if (np->flags & NIU_FLAGS_XMAC)
+                return niu_reset_tx_xmac(np);
+        else
+                return niu_reset_tx_bmac(np);
+}
+
+static void niu_init_tx_xmac(struct niu *np, u64 min, u64 max)
+{
+        u64 val;
+
+        val = nr64_mac(XMAC_MIN);
+        val &= ~(XMAC_MIN_TX_MIN_PKT_SIZE |
+                 XMAC_MIN_RX_MIN_PKT_SIZE);
+        val |= (min << XMAC_MIN_RX_MIN_PKT_SIZE_SHFT);
+        val |= (min << XMAC_MIN_TX_MIN_PKT_SIZE_SHFT);
+        nw64_mac(XMAC_MIN, val);
+
+        nw64_mac(XMAC_MAX, max);
+
+        nw64_mac(XTXMAC_STAT_MSK, ~(u64)0);
+
+        val = nr64_mac(XMAC_IPG);
+        if (np->flags & NIU_FLAGS_10G) {
+                val &= ~XMAC_IPG_IPG_XGMII;
+                val |= (IPG_12_15_XGMII << XMAC_IPG_IPG_XGMII_SHIFT);
+        } else {
+                val &= ~XMAC_IPG_IPG_MII_GMII;
+                val |= (IPG_12_MII_GMII << XMAC_IPG_IPG_MII_GMII_SHIFT);
+        }
+        nw64_mac(XMAC_IPG, val);
+
+        val = nr64_mac(XMAC_CONFIG);
+        val &= ~(XMAC_CONFIG_ALWAYS_NO_CRC |
+                 XMAC_CONFIG_STRETCH_MODE |
+                 XMAC_CONFIG_VAR_MIN_IPG_EN |
+                 XMAC_CONFIG_TX_ENABLE);
+        nw64_mac(XMAC_CONFIG, val);
+
+        nw64_mac(TXMAC_FRM_CNT, 0);
+        nw64_mac(TXMAC_BYTE_CNT, 0);
+}
+
+static void niu_init_tx_bmac(struct niu *np, u64 min, u64 max)
+{
+        u64 val;
+
+        nw64_mac(BMAC_MIN_FRAME, min);
+        nw64_mac(BMAC_MAX_FRAME, max);
+
+        nw64_mac(BTXMAC_STATUS_MASK, ~(u64)0);
+        nw64_mac(BMAC_CTRL_TYPE, 0x8808);
+        nw64_mac(BMAC_PREAMBLE_SIZE, 7);
+
+        val = nr64_mac(BTXMAC_CONFIG);
+        val &= ~(BTXMAC_CONFIG_FCS_DISABLE |
+                 BTXMAC_CONFIG_ENABLE);
+        nw64_mac(BTXMAC_CONFIG, val);
+}
+
+static void niu_init_tx_mac(struct niu *np)
+{
+        u64 min, max;
+
+        min = 64;
+        if (np->dev->mtu > ETH_DATA_LEN)
+                max = 9216;
+        else
+                max = 1522;
+
+        /* The XMAC_MIN register only accepts values for TX min which
+         * have the low 3 bits cleared.
+         */
+        BUILD_BUG_ON(min & 0x7);
+
+        if (np->flags & NIU_FLAGS_XMAC)
+                niu_init_tx_xmac(np, min, max);
+        else
+                niu_init_tx_bmac(np, min, max);
+}
+
+static int niu_reset_rx_xmac(struct niu *np)
+{
+        int limit;
+
+        nw64_mac(XRXMAC_SW_RST,
+                 XRXMAC_SW_RST_REG_RS | XRXMAC_SW_RST_SOFT_RST);
+        limit = 1000;
+        while (--limit >= 0) {
+                if (!(nr64_mac(XRXMAC_SW_RST) & (XRXMAC_SW_RST_REG_RS |
+                                                 XRXMAC_SW_RST_SOFT_RST)))
+                    break;
+                udelay(100);
+        }
+        if (limit < 0) {
+                dev_err(np->device, PFX "Port %u RX XMAC would not reset, "
+                        "XRXMAC_SW_RST[%llx]\n",
+                        np->port,
+                        (unsigned long long) nr64_mac(XRXMAC_SW_RST));
+                return -ENODEV;
+        }
+
+        return 0;
+}
+
+static int niu_reset_rx_bmac(struct niu *np)
+{
+        int limit;
+
+        nw64_mac(BRXMAC_SW_RST, BRXMAC_SW_RST_RESET);
+        limit = 1000;
+        while (--limit >= 0) {
+                if (!(nr64_mac(BRXMAC_SW_RST) & BRXMAC_SW_RST_RESET))
+                        break;
+                udelay(100);
+        }
+        if (limit < 0) {
+                dev_err(np->device, PFX "Port %u RX BMAC would not reset, "
+                        "BRXMAC_SW_RST[%llx]\n",
+                        np->port,
+                        (unsigned long long) nr64_mac(BRXMAC_SW_RST));
+                return -ENODEV;
+        }
+
+        return 0;
+}
+
+static int niu_reset_rx_mac(struct niu *np)
+{
+        if (np->flags & NIU_FLAGS_XMAC)
+                return niu_reset_rx_xmac(np);
+        else
+                return niu_reset_rx_bmac(np);
+}
+
+static void niu_init_rx_xmac(struct niu *np)
+{
+        struct niu_parent *parent = np->parent;
+        struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
+        int first_rdc_table = tp->first_table_num;
+        unsigned long i;
+        u64 val;
+
+        nw64_mac(XMAC_ADD_FILT0, 0);
+        nw64_mac(XMAC_ADD_FILT1, 0);
+        nw64_mac(XMAC_ADD_FILT2, 0);
+        nw64_mac(XMAC_ADD_FILT12_MASK, 0);
+        nw64_mac(XMAC_ADD_FILT00_MASK, 0);
+        for (i = 0; i < MAC_NUM_HASH; i++)
+                nw64_mac(XMAC_HASH_TBL(i), 0);
+        nw64_mac(XRXMAC_STAT_MSK, ~(u64)0);
+        niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
+        niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
+
+        val = nr64_mac(XMAC_CONFIG);
+        val &= ~(XMAC_CONFIG_RX_MAC_ENABLE |
+                 XMAC_CONFIG_PROMISCUOUS |
+                 XMAC_CONFIG_PROMISC_GROUP |
+                 XMAC_CONFIG_ERR_CHK_DIS |
+                 XMAC_CONFIG_RX_CRC_CHK_DIS |
+                 XMAC_CONFIG_RESERVED_MULTICAST |
+                 XMAC_CONFIG_RX_CODEV_CHK_DIS |
+                 XMAC_CONFIG_ADDR_FILTER_EN |
+                 XMAC_CONFIG_RCV_PAUSE_ENABLE |
+                 XMAC_CONFIG_STRIP_CRC |
+                 XMAC_CONFIG_PASS_FLOW_CTRL |
+                 XMAC_CONFIG_MAC2IPP_PKT_CNT_EN);
+        val |= (XMAC_CONFIG_HASH_FILTER_EN);
+        nw64_mac(XMAC_CONFIG, val);
+
+        nw64_mac(RXMAC_BT_CNT, 0);
+        nw64_mac(RXMAC_BC_FRM_CNT, 0);
+        nw64_mac(RXMAC_MC_FRM_CNT, 0);
+        nw64_mac(RXMAC_FRAG_CNT, 0);
+        nw64_mac(RXMAC_HIST_CNT1, 0);
+        nw64_mac(RXMAC_HIST_CNT2, 0);
+        nw64_mac(RXMAC_HIST_CNT3, 0);
+        nw64_mac(RXMAC_HIST_CNT4, 0);
+        nw64_mac(RXMAC_HIST_CNT5, 0);
+        nw64_mac(RXMAC_HIST_CNT6, 0);
+        nw64_mac(RXMAC_HIST_CNT7, 0);
+        nw64_mac(RXMAC_MPSZER_CNT, 0);
+        nw64_mac(RXMAC_CRC_ER_CNT, 0);
+        nw64_mac(RXMAC_CD_VIO_CNT, 0);
+        nw64_mac(LINK_FAULT_CNT, 0);
+}
+
+static void niu_init_rx_bmac(struct niu *np)
+{
+        struct niu_parent *parent = np->parent;
+        struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
+        int first_rdc_table = tp->first_table_num;
+        unsigned long i;
+        u64 val;
+
+        nw64_mac(BMAC_ADD_FILT0, 0);
+        nw64_mac(BMAC_ADD_FILT1, 0);
+        nw64_mac(BMAC_ADD_FILT2, 0);
+        nw64_mac(BMAC_ADD_FILT12_MASK, 0);
+        nw64_mac(BMAC_ADD_FILT00_MASK, 0);
+        for (i = 0; i < MAC_NUM_HASH; i++)
+                nw64_mac(BMAC_HASH_TBL(i), 0);
+        niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
+        niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
+        nw64_mac(BRXMAC_STATUS_MASK, ~(u64)0);
+
+        val = nr64_mac(BRXMAC_CONFIG);
+        val &= ~(BRXMAC_CONFIG_ENABLE |
+                 BRXMAC_CONFIG_STRIP_PAD |
+                 BRXMAC_CONFIG_STRIP_FCS |
+                 BRXMAC_CONFIG_PROMISC |
+                 BRXMAC_CONFIG_PROMISC_GRP |
+                 BRXMAC_CONFIG_ADDR_FILT_EN |
+                 BRXMAC_CONFIG_DISCARD_DIS);
+        val |= (BRXMAC_CONFIG_HASH_FILT_EN);
+        nw64_mac(BRXMAC_CONFIG, val);
+
+        val = nr64_mac(BMAC_ADDR_CMPEN);
+        val |= BMAC_ADDR_CMPEN_EN0;
+        nw64_mac(BMAC_ADDR_CMPEN, val);
+}
+
+static void niu_init_rx_mac(struct niu *np)
+{
+        niu_set_primary_mac(np, np->dev->dev_addr);
+
+        if (np->flags & NIU_FLAGS_XMAC)
+                niu_init_rx_xmac(np);
+        else
+                niu_init_rx_bmac(np);
+}
+
+static void niu_enable_tx_xmac(struct niu *np, int on)
+{
+        u64 val = nr64_mac(XMAC_CONFIG);
+
+        if (on)
+                val |= XMAC_CONFIG_TX_ENABLE;
+        else
+                val &= ~XMAC_CONFIG_TX_ENABLE;
+        nw64_mac(XMAC_CONFIG, val);
+}
+
+static void niu_enable_tx_bmac(struct niu *np, int on)
+{
+        u64 val = nr64_mac(BTXMAC_CONFIG);
+
+        if (on)
+                val |= BTXMAC_CONFIG_ENABLE;
+        else
+                val &= ~BTXMAC_CONFIG_ENABLE;
+        nw64_mac(BTXMAC_CONFIG, val);
+}
+
+static void niu_enable_tx_mac(struct niu *np, int on)
+{
+        if (np->flags & NIU_FLAGS_XMAC)
+                niu_enable_tx_xmac(np, on);
+        else
+                niu_enable_tx_bmac(np, on);
+}
+
+static void niu_enable_rx_xmac(struct niu *np, int on)
+{
+        u64 val = nr64_mac(XMAC_CONFIG);
+
+        val &= ~(XMAC_CONFIG_HASH_FILTER_EN |
+                 XMAC_CONFIG_PROMISCUOUS);
+
+        if (np->flags & NIU_FLAGS_MCAST)
+                val |= XMAC_CONFIG_HASH_FILTER_EN;
+        if (np->flags & NIU_FLAGS_PROMISC)
+                val |= XMAC_CONFIG_PROMISCUOUS;
+
+        if (on)
+                val |= XMAC_CONFIG_RX_MAC_ENABLE;
+        else
+                val &= ~XMAC_CONFIG_RX_MAC_ENABLE;
+        nw64_mac(XMAC_CONFIG, val);
+}
+
+static void niu_enable_rx_bmac(struct niu *np, int on)
+{
+        u64 val = nr64_mac(BRXMAC_CONFIG);
+
+        val &= ~(BRXMAC_CONFIG_HASH_FILT_EN |
+                 BRXMAC_CONFIG_PROMISC);
+
+        if (np->flags & NIU_FLAGS_MCAST)
+                val |= BRXMAC_CONFIG_HASH_FILT_EN;
+        if (np->flags & NIU_FLAGS_PROMISC)
+                val |= BRXMAC_CONFIG_PROMISC;
+
+        if (on)
+                val |= BRXMAC_CONFIG_ENABLE;
+        else
+                val &= ~BRXMAC_CONFIG_ENABLE;
+        nw64_mac(BRXMAC_CONFIG, val);
+}
+
+static void niu_enable_rx_mac(struct niu *np, int on)
+{
+        if (np->flags & NIU_FLAGS_XMAC)
+                niu_enable_rx_xmac(np, on);
+        else
+                niu_enable_rx_bmac(np, on);
+}
+
+static int niu_init_mac(struct niu *np)
+{
+        int err;
+
+        niu_init_xif(np);
+        err = niu_init_pcs(np);
+        if (err)
+                return err;
+
+        err = niu_reset_tx_mac(np);
+        if (err)
+                return err;
+        niu_init_tx_mac(np);
+        err = niu_reset_rx_mac(np);
+        if (err)
+                return err;
+        niu_init_rx_mac(np);
+
+        /* This looks hookey but the RX MAC reset we just did will
+         * undo some of the state we setup in niu_init_tx_mac() so we
+         * have to call it again.  In particular, the RX MAC reset will
+         * set the XMAC_MAX register back to it's default value.
+         */
+        niu_init_tx_mac(np);
+        niu_enable_tx_mac(np, 1);
+
+        niu_enable_rx_mac(np, 1);
+
+        return 0;
+}
+
+static void niu_stop_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
+{
+        (void) niu_tx_channel_stop(np, rp->tx_channel);
+}
+
+static void niu_stop_tx_channels(struct niu *np)
+{
+        int i;
+
+        for (i = 0; i < np->num_tx_rings; i++) {
+                struct tx_ring_info *rp = &np->tx_rings[i];
+
+                niu_stop_one_tx_channel(np, rp);
+        }
+}
+
+static void niu_reset_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
+{
+        (void) niu_tx_channel_reset(np, rp->tx_channel);
+}
+
+static void niu_reset_tx_channels(struct niu *np)
+{
+        int i;
+
+        for (i = 0; i < np->num_tx_rings; i++) {
+                struct tx_ring_info *rp = &np->tx_rings[i];
+
+                niu_reset_one_tx_channel(np, rp);
+        }
+}
+
+static void niu_stop_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
+{
+        (void) niu_enable_rx_channel(np, rp->rx_channel, 0);
+}
+
+static void niu_stop_rx_channels(struct niu *np)
+{
+        int i;
+
+        for (i = 0; i < np->num_rx_rings; i++) {
+                struct rx_ring_info *rp = &np->rx_rings[i];
+
+                niu_stop_one_rx_channel(np, rp);
+        }
+}
+
+static void niu_reset_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
+{
+        int channel = rp->rx_channel;
+
+        (void) niu_rx_channel_reset(np, channel);
+        nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_ALL);
+        nw64(RX_DMA_CTL_STAT(channel), 0);
+        (void) niu_enable_rx_channel(np, channel, 0);
+}
+
+static void niu_reset_rx_channels(struct niu *np)
+{
+        int i;
+
+        for (i = 0; i < np->num_rx_rings; i++) {
+                struct rx_ring_info *rp = &np->rx_rings[i];
+
+                niu_reset_one_rx_channel(np, rp);
+        }
+}
+
+static void niu_disable_ipp(struct niu *np)
+{
+        u64 rd, wr, val;
+        int limit;
+
+        rd = nr64_ipp(IPP_DFIFO_RD_PTR);
+        wr = nr64_ipp(IPP_DFIFO_WR_PTR);
+        limit = 100;
+        while (--limit >= 0 && (rd != wr)) {
+                rd = nr64_ipp(IPP_DFIFO_RD_PTR);
+                wr = nr64_ipp(IPP_DFIFO_WR_PTR);
+        }
+        if (limit < 0 &&
+            (rd != 0 && wr != 1)) {
+                dev_err(np->device, PFX "%s: IPP would not quiesce, "
+                        "rd_ptr[%llx] wr_ptr[%llx]\n",
+                        np->dev->name,
+                        (unsigned long long) nr64_ipp(IPP_DFIFO_RD_PTR),
+                        (unsigned long long) nr64_ipp(IPP_DFIFO_WR_PTR));
+        }
+
+        val = nr64_ipp(IPP_CFIG);
+        val &= ~(IPP_CFIG_IPP_ENABLE |
+                 IPP_CFIG_DFIFO_ECC_EN |
+                 IPP_CFIG_DROP_BAD_CRC |
+                 IPP_CFIG_CKSUM_EN);
+        nw64_ipp(IPP_CFIG, val);
+
+        (void) niu_ipp_reset(np);
+}
+
+static int niu_init_hw(struct niu *np)
+{
+        int i, err;
+
+        niudbg(IFUP, "%s: Initialize TXC\n", np->dev->name);
+        niu_txc_enable_port(np, 1);
+        niu_txc_port_dma_enable(np, 1);
+        niu_txc_set_imask(np, 0);
+
+        niudbg(IFUP, "%s: Initialize TX channels\n", np->dev->name);
+        for (i = 0; i < np->num_tx_rings; i++) {
+                struct tx_ring_info *rp = &np->tx_rings[i];
+
+                err = niu_init_one_tx_channel(np, rp);
+                if (err)
+                        return err;
+        }
+
+        niudbg(IFUP, "%s: Initialize RX channels\n", np->dev->name);
+        err = niu_init_rx_channels(np);
+        if (err)
+                goto out_uninit_tx_channels;
+
+        niudbg(IFUP, "%s: Initialize classifier\n", np->dev->name);
+        err = niu_init_classifier_hw(np);
+        if (err)
+                goto out_uninit_rx_channels;
+
+        niudbg(IFUP, "%s: Initialize ZCP\n", np->dev->name);
+        err = niu_init_zcp(np);
+        if (err)
+                goto out_uninit_rx_channels;
+
+        niudbg(IFUP, "%s: Initialize IPP\n", np->dev->name);
+        err = niu_init_ipp(np);
+        if (err)
+                goto out_uninit_rx_channels;
+
+        niudbg(IFUP, "%s: Initialize MAC\n", np->dev->name);
+        err = niu_init_mac(np);
+        if (err)
+                goto out_uninit_ipp;
+
+        return 0;
+
+out_uninit_ipp:
+        niudbg(IFUP, "%s: Uninit IPP\n", np->dev->name);
+        niu_disable_ipp(np);
+
+out_uninit_rx_channels:
+        niudbg(IFUP, "%s: Uninit RX channels\n", np->dev->name);
+        niu_stop_rx_channels(np);
+        niu_reset_rx_channels(np);
+
+out_uninit_tx_channels:
+        niudbg(IFUP, "%s: Uninit TX channels\n", np->dev->name);
+        niu_stop_tx_channels(np);
+        niu_reset_tx_channels(np);
+
+        return err;
+}
+
+static void niu_stop_hw(struct niu *np)
+{
+        niudbg(IFDOWN, "%s: Disable interrupts\n", np->dev->name);
+        niu_enable_interrupts(np, 0);
+
+        niudbg(IFDOWN, "%s: Disable RX MAC\n", np->dev->name);
+        niu_enable_rx_mac(np, 0);
+
+        niudbg(IFDOWN, "%s: Disable IPP\n", np->dev->name);
+        niu_disable_ipp(np);
+
+        niudbg(IFDOWN, "%s: Stop TX channels\n", np->dev->name);
+        niu_stop_tx_channels(np);
+
+        niudbg(IFDOWN, "%s: Stop RX channels\n", np->dev->name);
+        niu_stop_rx_channels(np);
+
+        niudbg(IFDOWN, "%s: Reset TX channels\n", np->dev->name);
+        niu_reset_tx_channels(np);
+
+        niudbg(IFDOWN, "%s: Reset RX channels\n", np->dev->name);
+        niu_reset_rx_channels(np);
+}
+
+static int niu_request_irq(struct niu *np)
+{
+        int i, j, err;
+
+        err = 0;
+        for (i = 0; i < np->num_ldg; i++) {
+                struct niu_ldg *lp = &np->ldg[i];
+
+                err = request_irq(lp->irq, niu_interrupt,
+                                  IRQF_SHARED | IRQF_SAMPLE_RANDOM,
+                                  np->dev->name, lp);
+                if (err)
+                        goto out_free_irqs;
+
+        }
+
+        return 0;
+
+out_free_irqs:
+        for (j = 0; j < i; j++) {
+                struct niu_ldg *lp = &np->ldg[j];
+
+                free_irq(lp->irq, lp);
+        }
+        return err;
+}
+
+static void niu_free_irq(struct niu *np)
+{
+        int i;
+
+        for (i = 0; i < np->num_ldg; i++) {
+                struct niu_ldg *lp = &np->ldg[i];
+
+                free_irq(lp->irq, lp);
+        }
+}
+
+static void niu_enable_napi(struct niu *np)
+{
+        int i;
+
+        for (i = 0; i < np->num_ldg; i++)
+                napi_enable(&np->ldg[i].napi);
+}
+
+static void niu_disable_napi(struct niu *np)
+{
+        int i;
+
+        for (i = 0; i < np->num_ldg; i++)
+                napi_disable(&np->ldg[i].napi);
+}
+
+static int niu_open(struct net_device *dev)
+{
+        struct niu *np = netdev_priv(dev);
+        int err;
+
+        netif_carrier_off(dev);
+
+        err = niu_alloc_channels(np);
+        if (err)
+                goto out_err;
+
+        err = niu_enable_interrupts(np, 0);
+        if (err)
+                goto out_free_channels;
+
+        err = niu_request_irq(np);
+        if (err)
+                goto out_free_channels;
+
+        niu_enable_napi(np);
+
+        spin_lock_irq(&np->lock);
+
+        err = niu_init_hw(np);
+        if (!err) {
+                init_timer(&np->timer);
+                np->timer.expires = jiffies + HZ;
+                np->timer.data = (unsigned long) np;
+                np->timer.function = niu_timer;
+
+                err = niu_enable_interrupts(np, 1);
+                if (err)
+                        niu_stop_hw(np);
+        }
+
+        spin_unlock_irq(&np->lock);
+
+        if (err) {
+                niu_disable_napi(np);
+                goto out_free_irq;
+        }
+
+        netif_start_queue(dev);
+
+        if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
+                netif_carrier_on(dev);
+
+        add_timer(&np->timer);
+
+        return 0;
+
+out_free_irq:
+        niu_free_irq(np);
+
+out_free_channels:
+        niu_free_channels(np);
+
+out_err:
+        return err;
+}
+
+static void niu_full_shutdown(struct niu *np, struct net_device *dev)
+{
+        cancel_work_sync(&np->reset_task);
+
+        niu_disable_napi(np);
+        netif_stop_queue(dev);
+
+        del_timer_sync(&np->timer);
+
+        spin_lock_irq(&np->lock);
+
+        niu_stop_hw(np);
+
+        spin_unlock_irq(&np->lock);
+}
+
+static int niu_close(struct net_device *dev)
+{
+        struct niu *np = netdev_priv(dev);
+
+        niu_full_shutdown(np, dev);
+
+        niu_free_irq(np);
+
+        niu_free_channels(np);
+
+        return 0;
+}
+
+static void niu_sync_xmac_stats(struct niu *np)
+{
+        struct niu_xmac_stats *mp = &np->mac_stats.xmac;
+
+        mp->tx_frames += nr64_mac(TXMAC_FRM_CNT);
+        mp->tx_bytes += nr64_mac(TXMAC_BYTE_CNT);
+
+        mp->rx_link_faults += nr64_mac(LINK_FAULT_CNT);
+        mp->rx_align_errors += nr64_mac(RXMAC_ALIGN_ERR_CNT);
+        mp->rx_frags += nr64_mac(RXMAC_FRAG_CNT);
+        mp->rx_mcasts += nr64_mac(RXMAC_MC_FRM_CNT);
+        mp->rx_bcasts += nr64_mac(RXMAC_BC_FRM_CNT);
+        mp->rx_hist_cnt1 += nr64_mac(RXMAC_HIST_CNT1);
+        mp->rx_hist_cnt2 += nr64_mac(RXMAC_HIST_CNT2);
+        mp->rx_hist_cnt3 += nr64_mac(RXMAC_HIST_CNT3);
+        mp->rx_hist_cnt4 += nr64_mac(RXMAC_HIST_CNT4);
+        mp->rx_hist_cnt5 += nr64_mac(RXMAC_HIST_CNT5);
+        mp->rx_hist_cnt6 += nr64_mac(RXMAC_HIST_CNT6);
+        mp->rx_hist_cnt7 += nr64_mac(RXMAC_HIST_CNT7);
+        mp->rx_octets += nr64_mac(RXMAC_BT_CNT);
+        mp->rx_code_violations += nr64_mac(RXMAC_CD_VIO_CNT);
+        mp->rx_len_errors += nr64_mac(RXMAC_MPSZER_CNT);
+        mp->rx_crc_errors += nr64_mac(RXMAC_CRC_ER_CNT);
+}
+
+static void niu_sync_bmac_stats(struct niu *np)
+{
+        struct niu_bmac_stats *mp = &np->mac_stats.bmac;
+
+        mp->tx_bytes += nr64_mac(BTXMAC_BYTE_CNT);
+        mp->tx_frames += nr64_mac(BTXMAC_FRM_CNT);
+
+        mp->rx_frames += nr64_mac(BRXMAC_FRAME_CNT);
+        mp->rx_align_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
+        mp->rx_crc_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
+        mp->rx_len_errors += nr64_mac(BRXMAC_CODE_VIOL_ERR_CNT);
+}
+
+static void niu_sync_mac_stats(struct niu *np)
+{
+        if (np->flags & NIU_FLAGS_XMAC)
+                niu_sync_xmac_stats(np);
+        else
+                niu_sync_bmac_stats(np);
+}
+
+static void niu_get_rx_stats(struct niu *np)
+{
+        unsigned long pkts, dropped, errors, bytes;
+        int i;
+
+        pkts = dropped = errors = bytes = 0;
+        for (i = 0; i < np->num_rx_rings; i++) {
+                struct rx_ring_info *rp = &np->rx_rings[i];
+
+                pkts += rp->rx_packets;
+                bytes += rp->rx_bytes;
+                dropped += rp->rx_dropped;
+                errors += rp->rx_errors;
+        }
+        np->net_stats.rx_packets = pkts;
+        np->net_stats.rx_bytes = bytes;
+        np->net_stats.rx_dropped = dropped;
+        np->net_stats.rx_errors = errors;
+}
+
+static void niu_get_tx_stats(struct niu *np)
+{
+        unsigned long pkts, errors, bytes;
+        int i;
+
+        pkts = errors = bytes = 0;
+        for (i = 0; i < np->num_tx_rings; i++) {
+                struct tx_ring_info *rp = &np->tx_rings[i];
+
+                pkts += rp->tx_packets;
+                bytes += rp->tx_bytes;
+                errors += rp->tx_errors;
+        }
+        np->net_stats.tx_packets = pkts;
+        np->net_stats.tx_bytes = bytes;
+        np->net_stats.tx_errors = errors;
+}
+
+static struct net_device_stats *niu_get_stats(struct net_device *dev)
+{
+        struct niu *np = netdev_priv(dev);
+
+        niu_get_rx_stats(np);
+        niu_get_tx_stats(np);
+
+        return &np->net_stats;
+}
+
+static void niu_load_hash_xmac(struct niu *np, u16 *hash)
+{
+        int i;
+
+        for (i = 0; i < 16; i++)
+                nw64_mac(XMAC_HASH_TBL(i), hash[i]);
+}
+
+static void niu_load_hash_bmac(struct niu *np, u16 *hash)
+{
+        int i;
+
+        for (i = 0; i < 16; i++)
+                nw64_mac(BMAC_HASH_TBL(i), hash[i]);
+}
+
+static void niu_load_hash(struct niu *np, u16 *hash)
+{
+        if (np->flags & NIU_FLAGS_XMAC)
+                niu_load_hash_xmac(np, hash);
+        else
+                niu_load_hash_bmac(np, hash);
+}
+
+static void niu_set_rx_mode(struct net_device *dev)
+{
+        struct niu *np = netdev_priv(dev);
+        int i, alt_cnt, err;
+        struct dev_addr_list *addr;
+        unsigned long flags;
+        u16 hash[16] = { 0, };
+
+        spin_lock_irqsave(&np->lock, flags);
+        niu_enable_rx_mac(np, 0);
+
+        np->flags &= ~(NIU_FLAGS_MCAST | NIU_FLAGS_PROMISC);
+        if (dev->flags & IFF_PROMISC)
+                np->flags |= NIU_FLAGS_PROMISC;
+        if ((dev->flags & IFF_ALLMULTI) || (dev->mc_count > 0))
+                np->flags |= NIU_FLAGS_MCAST;
+
+        alt_cnt = dev->uc_count;
+        if (alt_cnt > niu_num_alt_addr(np)) {
+                alt_cnt = 0;
+                np->flags |= NIU_FLAGS_PROMISC;
+        }
+
+        if (alt_cnt) {
+                int index = 0;
+
+                for (addr = dev->uc_list; addr; addr = addr->next) {
+                        err = niu_set_alt_mac(np, index,
+                                              addr->da_addr);
+                        if (err)
+                                printk(KERN_WARNING PFX "%s: Error %d "
+                                       "adding alt mac %d\n",
+                                       dev->name, err, index);
+                        err = niu_enable_alt_mac(np, index, 1);
+                        if (err)
+                                printk(KERN_WARNING PFX "%s: Error %d "
+                                       "enabling alt mac %d\n",
+                                       dev->name, err, index);
+
+                        index++;
+                }
+        } else {
+                for (i = 0; i < niu_num_alt_addr(np); i++) {
+                        err = niu_enable_alt_mac(np, i, 0);
+                        if (err)
+                                printk(KERN_WARNING PFX "%s: Error %d "
+                                       "disabling alt mac %d\n",
+                                       dev->name, err, i);
+                }
+        }
+        if (dev->flags & IFF_ALLMULTI) {
+                for (i = 0; i < 16; i++)
+                        hash[i] = 0xffff;
+        } else if (dev->mc_count > 0) {
+                for (addr = dev->mc_list; addr; addr = addr->next) {
+                        u32 crc = ether_crc_le(ETH_ALEN, addr->da_addr);
+
+                        crc >>= 24;
+                        hash[crc >> 4] |= (1 << (15 - (crc & 0xf)));
+                }
+        }
+
+        if (np->flags & NIU_FLAGS_MCAST)
+                niu_load_hash(np, hash);
+
+        niu_enable_rx_mac(np, 1);
+        spin_unlock_irqrestore(&np->lock, flags);
+}
+
+static int niu_set_mac_addr(struct net_device *dev, void *p)
+{
+        struct niu *np = netdev_priv(dev);
+        struct sockaddr *addr = p;
+        unsigned long flags;
+
+        if (!is_valid_ether_addr(addr->sa_data))
+                return -EINVAL;
+
+        memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
+
+        if (!netif_running(dev))
+                return 0;
+
+        spin_lock_irqsave(&np->lock, flags);
+        niu_enable_rx_mac(np, 0);
+        niu_set_primary_mac(np, dev->dev_addr);
+        niu_enable_rx_mac(np, 1);
+        spin_unlock_irqrestore(&np->lock, flags);
+
+        return 0;
+}
+
+static int niu_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+{
+        return -EOPNOTSUPP;
+}
+
+static void niu_netif_stop(struct niu *np)
+{
+        np->dev->trans_start = jiffies; /* prevent tx timeout */
+
+        niu_disable_napi(np);
+
+        netif_tx_disable(np->dev);
+}
+
+static void niu_netif_start(struct niu *np)
+{
+        /* NOTE: unconditional netif_wake_queue is only appropriate
+         * so long as all callers are assured to have free tx slots
+         * (such as after niu_init_hw).
+         */
+        netif_wake_queue(np->dev);
+
+        niu_enable_napi(np);
+
+        niu_enable_interrupts(np, 1);
+}
+
+static void niu_reset_task(struct work_struct *work)
+{
+        struct niu *np = container_of(work, struct niu, reset_task);
+        unsigned long flags;
+        int err;
+
+        spin_lock_irqsave(&np->lock, flags);
+        if (!netif_running(np->dev)) {
+                spin_unlock_irqrestore(&np->lock, flags);
+                return;
+        }
+
+        spin_unlock_irqrestore(&np->lock, flags);
+
+        del_timer_sync(&np->timer);
+
+        niu_netif_stop(np);
+
+        spin_lock_irqsave(&np->lock, flags);
+
+        niu_stop_hw(np);
+
+        err = niu_init_hw(np);
+        if (!err) {
+                np->timer.expires = jiffies + HZ;
+                add_timer(&np->timer);
+                niu_netif_start(np);
+        }
+
+        spin_unlock_irqrestore(&np->lock, flags);
+}
+
+static void niu_tx_timeout(struct net_device *dev)
+{
+        struct niu *np = netdev_priv(dev);
+
+        dev_err(np->device, PFX "%s: Transmit timed out, resetting\n",
+                dev->name);
+
+        schedule_work(&np->reset_task);
+}
+
+static void niu_set_txd(struct tx_ring_info *rp, int index,
+                        u64 mapping, u64 len, u64 mark,
+                        u64 n_frags)
+{
+        __le64 *desc = &rp->descr[index];
+
+        *desc = cpu_to_le64(mark |
+                            (n_frags << TX_DESC_NUM_PTR_SHIFT) |
+                            (len << TX_DESC_TR_LEN_SHIFT) |
+                            (mapping & TX_DESC_SAD));
+}
+
+static u64 niu_compute_tx_flags(struct sk_buff *skb, struct ethhdr *ehdr,
+                                u64 pad_bytes, u64 len)
+{
+        u16 eth_proto, eth_proto_inner;
+        u64 csum_bits, l3off, ihl, ret;
+        u8 ip_proto;
+        int ipv6;
+
+        eth_proto = be16_to_cpu(ehdr->h_proto);
+        eth_proto_inner = eth_proto;
+        if (eth_proto == ETH_P_8021Q) {
+                struct vlan_ethhdr *vp = (struct vlan_ethhdr *) ehdr;
+                __be16 val = vp->h_vlan_encapsulated_proto;
+
+                eth_proto_inner = be16_to_cpu(val);
+        }
+
+        ipv6 = ihl = 0;
+        switch (skb->protocol) {
+        case __constant_htons(ETH_P_IP):
+                ip_proto = ip_hdr(skb)->protocol;
+                ihl = ip_hdr(skb)->ihl;
+                break;
+        case __constant_htons(ETH_P_IPV6):
+                ip_proto = ipv6_hdr(skb)->nexthdr;
+                ihl = (40 >> 2);
+                ipv6 = 1;
+                break;
+        default:
+                ip_proto = ihl = 0;
+                break;
+        }
+
+        csum_bits = TXHDR_CSUM_NONE;
+        if (skb->ip_summed == CHECKSUM_PARTIAL) {
+                u64 start, stuff;
+
+                csum_bits = (ip_proto == IPPROTO_TCP ?
+                             TXHDR_CSUM_TCP :
+                             (ip_proto == IPPROTO_UDP ?
+                              TXHDR_CSUM_UDP : TXHDR_CSUM_SCTP));
+
+                start = skb_transport_offset(skb) -
+                        (pad_bytes + sizeof(struct tx_pkt_hdr));
+                stuff = start + skb->csum_offset;
+
+                csum_bits |= (start / 2) << TXHDR_L4START_SHIFT;
+                csum_bits |= (stuff / 2) << TXHDR_L4STUFF_SHIFT;
+        }
+
+        l3off = skb_network_offset(skb) -
+                (pad_bytes + sizeof(struct tx_pkt_hdr));
+
+        ret = (((pad_bytes / 2) << TXHDR_PAD_SHIFT) |
+               (len << TXHDR_LEN_SHIFT) |
+               ((l3off / 2) << TXHDR_L3START_SHIFT) |
+               (ihl << TXHDR_IHL_SHIFT) |
+               ((eth_proto_inner < 1536) ? TXHDR_LLC : 0) |
+               ((eth_proto == ETH_P_8021Q) ? TXHDR_VLAN : 0) |
+               (ipv6 ? TXHDR_IP_VER : 0) |
+               csum_bits);
+
+        return ret;
+}
+
+static struct tx_ring_info *tx_ring_select(struct niu *np, struct sk_buff *skb)
+{
+        return &np->tx_rings[0];
+}
+
+static int niu_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+        struct niu *np = netdev_priv(dev);
+        unsigned long align, headroom;
+        struct tx_ring_info *rp;
+        struct tx_pkt_hdr *tp;
+        unsigned int len, nfg;
+        struct ethhdr *ehdr;
+        int prod, i, tlen;
+        u64 mapping, mrk;
+
+        rp = tx_ring_select(np, skb);
+
+        if (niu_tx_avail(rp) <= (skb_shinfo(skb)->nr_frags + 1)) {
+                netif_stop_queue(dev);
+                dev_err(np->device, PFX "%s: BUG! Tx ring full when "
+                        "queue awake!\n", dev->name);
+                rp->tx_errors++;
+                return NETDEV_TX_BUSY;
+        }
+
+        if (skb->len < ETH_ZLEN) {
+                unsigned int pad_bytes = ETH_ZLEN - skb->len;
+
+                if (skb_pad(skb, pad_bytes))
+                        goto out;
+                skb_put(skb, pad_bytes);
+        }
+
+        len = sizeof(struct tx_pkt_hdr) + 15;
+        if (skb_headroom(skb) < len) {
+                struct sk_buff *skb_new;
+
+                skb_new = skb_realloc_headroom(skb, len);
+                if (!skb_new) {
+                        rp->tx_errors++;
+                        goto out_drop;
+                }
+                kfree_skb(skb);
+                skb = skb_new;
+        }
+
+        align = ((unsigned long) skb->data & (16 - 1));
+        headroom = align + sizeof(struct tx_pkt_hdr);
+
+        ehdr = (struct ethhdr *) skb->data;
+        tp = (struct tx_pkt_hdr *) skb_push(skb, headroom);
+
+        len = skb->len - sizeof(struct tx_pkt_hdr);
+        tp->flags = cpu_to_le64(niu_compute_tx_flags(skb, ehdr, align, len));
+        tp->resv = 0;
+
+        len = skb_headlen(skb);
+        mapping = np->ops->map_single(np->device, skb->data,
+                                      len, DMA_TO_DEVICE);
+
+        prod = rp->prod;
+
+        rp->tx_buffs[prod].skb = skb;
+        rp->tx_buffs[prod].mapping = mapping;
+
+        mrk = TX_DESC_SOP;
+        if (++rp->mark_counter == rp->mark_freq) {
+                rp->mark_counter = 0;
+                mrk |= TX_DESC_MARK;
+                rp->mark_pending++;
+        }
+
+        tlen = len;
+        nfg = skb_shinfo(skb)->nr_frags;
+        while (tlen > 0) {
+                tlen -= MAX_TX_DESC_LEN;
+                nfg++;
+        }
+
+        while (len > 0) {
+                unsigned int this_len = len;
+
+                if (this_len > MAX_TX_DESC_LEN)
+                        this_len = MAX_TX_DESC_LEN;
+
+                niu_set_txd(rp, prod, mapping, this_len, mrk, nfg);
+                mrk = nfg = 0;
+
+                prod = NEXT_TX(rp, prod);
+                mapping += this_len;
+                len -= this_len;
+        }
+
+        for (i = 0; i <  skb_shinfo(skb)->nr_frags; i++) {
+                skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
+
+                len = frag->size;
+                mapping = np->ops->map_page(np->device, frag->page,
+                                            frag->page_offset, len,
+                                            DMA_TO_DEVICE);
+
+                rp->tx_buffs[prod].skb = NULL;
+                rp->tx_buffs[prod].mapping = mapping;
+
+                niu_set_txd(rp, prod, mapping, len, 0, 0);
+
+                prod = NEXT_TX(rp, prod);
+        }
+
+        if (prod < rp->prod)
+                rp->wrap_bit ^= TX_RING_KICK_WRAP;
+        rp->prod = prod;
+
+        nw64(TX_RING_KICK(rp->tx_channel), rp->wrap_bit | (prod << 3));
+
+        if (unlikely(niu_tx_avail(rp) <= (MAX_SKB_FRAGS + 1))) {
+                netif_stop_queue(dev);
+                if (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp))
+                        netif_wake_queue(dev);
+        }
+
+        dev->trans_start = jiffies;
+
+out:
+        return NETDEV_TX_OK;
+
+out_drop:
+        rp->tx_errors++;
+        kfree_skb(skb);
+        goto out;
+}
+
+static int niu_change_mtu(struct net_device *dev, int new_mtu)
+{
+        struct niu *np = netdev_priv(dev);
+        int err, orig_jumbo, new_jumbo;
+
+        if (new_mtu < 68 || new_mtu > NIU_MAX_MTU)
+                return -EINVAL;
+
+        orig_jumbo = (dev->mtu > ETH_DATA_LEN);
+        new_jumbo = (new_mtu > ETH_DATA_LEN);
+
+        dev->mtu = new_mtu;
+
+        if (!netif_running(dev) ||
+            (orig_jumbo == new_jumbo))
+                return 0;
+
+        niu_full_shutdown(np, dev);
+
+        niu_free_channels(np);
+
+        niu_enable_napi(np);
+
+        err = niu_alloc_channels(np);
+        if (err)
+                return err;
+
+        spin_lock_irq(&np->lock);
+
+        err = niu_init_hw(np);
+        if (!err) {
+                init_timer(&np->timer);
+                np->timer.expires = jiffies + HZ;
+                np->timer.data = (unsigned long) np;
+                np->timer.function = niu_timer;
+
+                err = niu_enable_interrupts(np, 1);
+                if (err)
+                        niu_stop_hw(np);
+        }
+
+        spin_unlock_irq(&np->lock);
+
+        if (!err) {
+                netif_start_queue(dev);
+                if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
+                        netif_carrier_on(dev);
+
+                add_timer(&np->timer);
+        }
+
+        return err;
+}
+
+static void niu_get_drvinfo(struct net_device *dev,
+                            struct ethtool_drvinfo *info)
+{
+        struct niu *np = netdev_priv(dev);
+        struct niu_vpd *vpd = &np->vpd;
+
+        strcpy(info->driver, DRV_MODULE_NAME);
+        strcpy(info->version, DRV_MODULE_VERSION);
+        sprintf(info->fw_version, "%d.%d",
+                vpd->fcode_major, vpd->fcode_minor);
+        if (np->parent->plat_type != PLAT_TYPE_NIU)
+                strcpy(info->bus_info, pci_name(np->pdev));
+}
+
+static int niu_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+        struct niu *np = netdev_priv(dev);
+        struct niu_link_config *lp;
+
+        lp = &np->link_config;
+
+        memset(cmd, 0, sizeof(*cmd));
+        cmd->phy_address = np->phy_addr;
+        cmd->supported = lp->supported;
+        cmd->advertising = lp->advertising;
+        cmd->autoneg = lp->autoneg;
+        cmd->speed = lp->active_speed;
+        cmd->duplex = lp->active_duplex;
+
+        return 0;
+}
+
+static int niu_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+        return -EINVAL;
+}
+
+static u32 niu_get_msglevel(struct net_device *dev)
+{
+        struct niu *np = netdev_priv(dev);
+        return np->msg_enable;
+}
+
+static void niu_set_msglevel(struct net_device *dev, u32 value)
+{
+        struct niu *np = netdev_priv(dev);
+        np->msg_enable = value;
+}
+
+static int niu_get_eeprom_len(struct net_device *dev)
+{
+        struct niu *np = netdev_priv(dev);
+
+        return np->eeprom_len;
+}
+
+static int niu_get_eeprom(struct net_device *dev,
+                          struct ethtool_eeprom *eeprom, u8 *data)
+{
+        struct niu *np = netdev_priv(dev);
+        u32 offset, len, val;
+
+        offset = eeprom->offset;
+        len = eeprom->len;
+
+        if (offset + len < offset)
+                return -EINVAL;
+        if (offset >= np->eeprom_len)
+                return -EINVAL;
+        if (offset + len > np->eeprom_len)
+                len = eeprom->len = np->eeprom_len - offset;
+
+        if (offset & 3) {
+                u32 b_offset, b_count;
+
+                b_offset = offset & 3;
+                b_count = 4 - b_offset;
+                if (b_count > len)
+                        b_count = len;
+
+                val = nr64(ESPC_NCR((offset - b_offset) / 4));
+                memcpy(data, ((char *)&val) + b_offset, b_count);
+                data += b_count;
+                len -= b_count;
+                offset += b_count;
+        }
+        while (len >= 4) {
+                val = nr64(ESPC_NCR(offset / 4));
+                memcpy(data, &val, 4);
+                data += 4;
+                len -= 4;
+                offset += 4;
+        }
+        if (len) {
+                val = nr64(ESPC_NCR(offset / 4));
+                memcpy(data, &val, len);
+        }
+        return 0;
+}
+
+static const struct {
+        const char string[ETH_GSTRING_LEN];
+} niu_xmac_stat_keys[] = {
+        { "tx_frames" },
+        { "tx_bytes" },
+        { "tx_fifo_errors" },
+        { "tx_overflow_errors" },
+        { "tx_max_pkt_size_errors" },
+        { "tx_underflow_errors" },
+        { "rx_local_faults" },
+        { "rx_remote_faults" },
+        { "rx_link_faults" },
+        { "rx_align_errors" },
+        { "rx_frags" },
+        { "rx_mcasts" },
+        { "rx_bcasts" },
+        { "rx_hist_cnt1" },
+        { "rx_hist_cnt2" },
+        { "rx_hist_cnt3" },
+        { "rx_hist_cnt4" },
+        { "rx_hist_cnt5" },
+        { "rx_hist_cnt6" },
+        { "rx_hist_cnt7" },
+        { "rx_octets" },
+        { "rx_code_violations" },
+        { "rx_len_errors" },
+        { "rx_crc_errors" },
+        { "rx_underflows" },
+        { "rx_overflows" },
+        { "pause_off_state" },
+        { "pause_on_state" },
+        { "pause_received" },
+};
+
+#define NUM_XMAC_STAT_KEYS      ARRAY_SIZE(niu_xmac_stat_keys)
+
+static const struct {
+        const char string[ETH_GSTRING_LEN];
+} niu_bmac_stat_keys[] = {
+        { "tx_underflow_errors" },
+        { "tx_max_pkt_size_errors" },
+        { "tx_bytes" },
+        { "tx_frames" },
+        { "rx_overflows" },
+        { "rx_frames" },
+        { "rx_align_errors" },
+        { "rx_crc_errors" },
+        { "rx_len_errors" },
+        { "pause_off_state" },
+        { "pause_on_state" },
+        { "pause_received" },
+};
+
+#define NUM_BMAC_STAT_KEYS      ARRAY_SIZE(niu_bmac_stat_keys)
+
+static const struct {
+        const char string[ETH_GSTRING_LEN];
+} niu_rxchan_stat_keys[] = {
+        { "rx_channel" },
+        { "rx_packets" },
+        { "rx_bytes" },
+        { "rx_dropped" },
+        { "rx_errors" },
+};
+
+#define NUM_RXCHAN_STAT_KEYS    ARRAY_SIZE(niu_rxchan_stat_keys)
+
+static const struct {
+        const char string[ETH_GSTRING_LEN];
+} niu_txchan_stat_keys[] = {
+        { "tx_channel" },
+        { "tx_packets" },
+        { "tx_bytes" },
+        { "tx_errors" },
+};
+
+#define NUM_TXCHAN_STAT_KEYS    ARRAY_SIZE(niu_txchan_stat_keys)
+
+static void niu_get_strings(struct net_device *dev, u32 stringset, u8 *data)
+{
+        struct niu *np = netdev_priv(dev);
+        int i;
+
+        if (stringset != ETH_SS_STATS)
+                return;
+
+        if (np->flags & NIU_FLAGS_XMAC) {
+                memcpy(data, niu_xmac_stat_keys,
+                       sizeof(niu_xmac_stat_keys));
+                data += sizeof(niu_xmac_stat_keys);
+        } else {
+                memcpy(data, niu_bmac_stat_keys,
+                       sizeof(niu_bmac_stat_keys));
+                data += sizeof(niu_bmac_stat_keys);
+        }
+        for (i = 0; i < np->num_rx_rings; i++) {
+                memcpy(data, niu_rxchan_stat_keys,
+                       sizeof(niu_rxchan_stat_keys));
+                data += sizeof(niu_rxchan_stat_keys);
+        }
+        for (i = 0; i < np->num_tx_rings; i++) {
+                memcpy(data, niu_txchan_stat_keys,
+                       sizeof(niu_txchan_stat_keys));
+                data += sizeof(niu_txchan_stat_keys);
+        }
+}
+
+static int niu_get_stats_count(struct net_device *dev)
+{
+        struct niu *np = netdev_priv(dev);
+
+        return ((np->flags & NIU_FLAGS_XMAC ?
+                 NUM_XMAC_STAT_KEYS :
+                 NUM_BMAC_STAT_KEYS) +
+                (np->num_rx_rings * NUM_RXCHAN_STAT_KEYS) +
+                (np->num_tx_rings * NUM_TXCHAN_STAT_KEYS));
+}
+
+static void niu_get_ethtool_stats(struct net_device *dev,
+                                  struct ethtool_stats *stats, u64 *data)
+{
+        struct niu *np = netdev_priv(dev);
+        int i;
+
+        niu_sync_mac_stats(np);
+        if (np->flags & NIU_FLAGS_XMAC) {
+                memcpy(data, &np->mac_stats.xmac,
+                       sizeof(struct niu_xmac_stats));
+                data += (sizeof(struct niu_xmac_stats) / sizeof(u64));
+        } else {
+                memcpy(data, &np->mac_stats.bmac,
+                       sizeof(struct niu_bmac_stats));
+                data += (sizeof(struct niu_bmac_stats) / sizeof(u64));
+        }
+        for (i = 0; i < np->num_rx_rings; i++) {
+                struct rx_ring_info *rp = &np->rx_rings[i];
+
+                data[0] = rp->rx_channel;
+                data[1] = rp->rx_packets;
+                data[2] = rp->rx_bytes;
+                data[3] = rp->rx_dropped;
+                data[4] = rp->rx_errors;
+                data += 5;
+        }
+        for (i = 0; i < np->num_tx_rings; i++) {
+                struct tx_ring_info *rp = &np->tx_rings[i];
+
+                data[0] = rp->tx_channel;
+                data[1] = rp->tx_packets;
+                data[2] = rp->tx_bytes;
+                data[3] = rp->tx_errors;
+                data += 4;
+        }
+}
+
+static u64 niu_led_state_save(struct niu *np)
+{
+        if (np->flags & NIU_FLAGS_XMAC)
+                return nr64_mac(XMAC_CONFIG);
+        else
+                return nr64_mac(BMAC_XIF_CONFIG);
+}
+
+static void niu_led_state_restore(struct niu *np, u64 val)
+{
+        if (np->flags & NIU_FLAGS_XMAC)
+                nw64_mac(XMAC_CONFIG, val);
+        else
+                nw64_mac(BMAC_XIF_CONFIG, val);
+}
+
+static void niu_force_led(struct niu *np, int on)
+{
+        u64 val, reg, bit;
+
+        if (np->flags & NIU_FLAGS_XMAC) {
+                reg = XMAC_CONFIG;
+                bit = XMAC_CONFIG_FORCE_LED_ON;
+        } else {
+                reg = BMAC_XIF_CONFIG;
+                bit = BMAC_XIF_CONFIG_LINK_LED;
+        }
+
+        val = nr64_mac(reg);
+        if (on)
+                val |= bit;
+        else
+                val &= ~bit;
+        nw64_mac(reg, val);
+}
+
+static int niu_phys_id(struct net_device *dev, u32 data)
+{
+        struct niu *np = netdev_priv(dev);
+        u64 orig_led_state;
+        int i;
+
+        if (!netif_running(dev))
+                return -EAGAIN;
+
+        if (data == 0)
+                data = 2;
+
+        orig_led_state = niu_led_state_save(np);
+        for (i = 0; i < (data * 2); i++) {
+                int on = ((i % 2) == 0);
+
+                niu_force_led(np, on);
+
+                if (msleep_interruptible(500))
+                        break;
+        }
+        niu_led_state_restore(np, orig_led_state);
+
+        return 0;
+}
+
+static const struct ethtool_ops niu_ethtool_ops = {
+        .get_drvinfo            = niu_get_drvinfo,
+        .get_link               = ethtool_op_get_link,
+        .get_msglevel           = niu_get_msglevel,
+        .set_msglevel           = niu_set_msglevel,
+        .get_eeprom_len         = niu_get_eeprom_len,
+        .get_eeprom             = niu_get_eeprom,
+        .get_settings           = niu_get_settings,
+        .set_settings           = niu_set_settings,
+        .get_strings            = niu_get_strings,
+        .get_stats_count        = niu_get_stats_count,
+        .get_ethtool_stats      = niu_get_ethtool_stats,
+        .phys_id                = niu_phys_id,
+};
+
+static int niu_ldg_assign_ldn(struct niu *np, struct niu_parent *parent,
+                              int ldg, int ldn)
+{
+        if (ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX)
+                return -EINVAL;
+        if (ldn < 0 || ldn > LDN_MAX)
+                return -EINVAL;
+
+        parent->ldg_map[ldn] = ldg;
+
+        if (np->parent->plat_type == PLAT_TYPE_NIU) {
+                /* On N2 NIU, the ldn-->ldg assignments are setup and fixed by
+                 * the firmware, and we're not supposed to change them.
+                 * Validate the mapping, because if it's wrong we probably
+                 * won't get any interrupts and that's painful to debug.
+                 */
+                if (nr64(LDG_NUM(ldn)) != ldg) {
+                        dev_err(np->device, PFX "Port %u, mis-matched "
+                                "LDG assignment "
+                                "for ldn %d, should be %d is %llu\n",
+                                np->port, ldn, ldg,
+                                (unsigned long long) nr64(LDG_NUM(ldn)));
+                        return -EINVAL;
+                }
+        } else
+                nw64(LDG_NUM(ldn), ldg);
+
+        return 0;
+}
+
+static int niu_set_ldg_timer_res(struct niu *np, int res)
+{
+        if (res < 0 || res > LDG_TIMER_RES_VAL)
+                return -EINVAL;
+
+
+        nw64(LDG_TIMER_RES, res);
+
+        return 0;
+}
+
+static int niu_set_ldg_sid(struct niu *np, int ldg, int func, int vector)
+{
+        if ((ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX) ||
+            (func < 0 || func > 3) ||
+            (vector < 0 || vector > 0x1f))
+                return -EINVAL;
+
+        nw64(SID(ldg), (func << SID_FUNC_SHIFT) | vector);
+
+        return 0;
+}
+
+static int __devinit niu_pci_eeprom_read(struct niu *np, u32 addr)
+{
+        u64 frame, frame_base = (ESPC_PIO_STAT_READ_START |
+                                 (addr << ESPC_PIO_STAT_ADDR_SHIFT));
+        int limit;
+
+        if (addr > (ESPC_PIO_STAT_ADDR >> ESPC_PIO_STAT_ADDR_SHIFT))
+                return -EINVAL;
+
+        frame = frame_base;
+        nw64(ESPC_PIO_STAT, frame);
+        limit = 64;
+        do {
+                udelay(5);
+                frame = nr64(ESPC_PIO_STAT);
+                if (frame & ESPC_PIO_STAT_READ_END)
+                        break;
+        } while (limit--);
+        if (!(frame & ESPC_PIO_STAT_READ_END)) {
+                dev_err(np->device, PFX "EEPROM read timeout frame[%llx]\n",
+                        (unsigned long long) frame);
+                return -ENODEV;
+        }
+
+        frame = frame_base;
+        nw64(ESPC_PIO_STAT, frame);
+        limit = 64;
+        do {
+                udelay(5);
+                frame = nr64(ESPC_PIO_STAT);
+                if (frame & ESPC_PIO_STAT_READ_END)
+                        break;
+        } while (limit--);
+        if (!(frame & ESPC_PIO_STAT_READ_END)) {
+                dev_err(np->device, PFX "EEPROM read timeout frame[%llx]\n",
+                        (unsigned long long) frame);
+                return -ENODEV;
+        }
+
+        frame = nr64(ESPC_PIO_STAT);
+        return (frame & ESPC_PIO_STAT_DATA) >> ESPC_PIO_STAT_DATA_SHIFT;
+}
+
+static int __devinit niu_pci_eeprom_read16(struct niu *np, u32 off)
+{
+        int err = niu_pci_eeprom_read(np, off);
+        u16 val;
+
+        if (err < 0)
+                return err;
+        val = (err << 8);
+        err = niu_pci_eeprom_read(np, off + 1);
+        if (err < 0)
+                return err;
+        val |= (err & 0xff);
+
+        return val;
+}
+
+static int __devinit niu_pci_eeprom_read16_swp(struct niu *np, u32 off)
+{
+        int err = niu_pci_eeprom_read(np, off);
+        u16 val;
+
+        if (err < 0)
+                return err;
+
+        val = (err & 0xff);
+        err = niu_pci_eeprom_read(np, off + 1);
+        if (err < 0)
+                return err;
+
+        val |= (err & 0xff) << 8;
+
+        return val;
+}
+
+static int __devinit niu_pci_vpd_get_propname(struct niu *np,
+                                              u32 off,
+                                              char *namebuf,
+                                              int namebuf_len)
+{
+        int i;
+
+        for (i = 0; i < namebuf_len; i++) {
+                int err = niu_pci_eeprom_read(np, off + i);
+                if (err < 0)
+                        return err;
+                *namebuf++ = err;
+                if (!err)
+                        break;
+        }
+        if (i >= namebuf_len)
+                return -EINVAL;
+
+        return i + 1;
+}
+
+static void __devinit niu_vpd_parse_version(struct niu *np)
+{
+        struct niu_vpd *vpd = &np->vpd;
+        int len = strlen(vpd->version) + 1;
+        const char *s = vpd->version;
+        int i;
+
+        for (i = 0; i < len - 5; i++) {
+                if (!strncmp(s + i, "FCode ", 5))
+                        break;
+        }
+        if (i >= len - 5)
+                return;
+
+        s += i + 5;
+        sscanf(s, "%d.%d", &vpd->fcode_major, &vpd->fcode_minor);
+
+        niudbg(PROBE, "VPD_SCAN: FCODE major(%d) minor(%d)\n",
+               vpd->fcode_major, vpd->fcode_minor);
+        if (vpd->fcode_major > NIU_VPD_MIN_MAJOR ||
+            (vpd->fcode_major == NIU_VPD_MIN_MAJOR &&
+             vpd->fcode_minor >= NIU_VPD_MIN_MINOR))
+                np->flags |= NIU_FLAGS_VPD_VALID;
+}
+
+/* ESPC_PIO_EN_ENABLE must be set */
+static int __devinit niu_pci_vpd_scan_props(struct niu *np,
+                                            u32 start, u32 end)
+{
+        unsigned int found_mask = 0;
+#define FOUND_MASK_MODEL        0x00000001
+#define FOUND_MASK_BMODEL       0x00000002
+#define FOUND_MASK_VERS         0x00000004
+#define FOUND_MASK_MAC          0x00000008
+#define FOUND_MASK_NMAC         0x00000010
+#define FOUND_MASK_PHY          0x00000020
+#define FOUND_MASK_ALL          0x0000003f
+
+        niudbg(PROBE, "VPD_SCAN: start[%x] end[%x]\n",
+               start, end);
+        while (start < end) {
+                int len, err, instance, type, prop_len;
+                char namebuf[64];
+                u8 *prop_buf;
+                int max_len;
+
+                if (found_mask == FOUND_MASK_ALL) {
+                        niu_vpd_parse_version(np);
+                        return 1;
+                }
+
+                err = niu_pci_eeprom_read(np, start + 2);
+                if (err < 0)
+                        return err;
+                len = err;
+                start += 3;
+
+                instance = niu_pci_eeprom_read(np, start);
+                type = niu_pci_eeprom_read(np, start + 3);
+                prop_len = niu_pci_eeprom_read(np, start + 4);
+                err = niu_pci_vpd_get_propname(np, start + 5, namebuf, 64);
+                if (err < 0)
+                        return err;
+
+                prop_buf = NULL;
+                max_len = 0;
+                if (!strcmp(namebuf, "model")) {
+                        prop_buf = np->vpd.model;
+                        max_len = NIU_VPD_MODEL_MAX;
+                        found_mask |= FOUND_MASK_MODEL;
+                } else if (!strcmp(namebuf, "board-model")) {
+                        prop_buf = np->vpd.board_model;
+                        max_len = NIU_VPD_BD_MODEL_MAX;
+                        found_mask |= FOUND_MASK_BMODEL;
+                } else if (!strcmp(namebuf, "version")) {
+                        prop_buf = np->vpd.version;
+                        max_len = NIU_VPD_VERSION_MAX;
+                        found_mask |= FOUND_MASK_VERS;
+                } else if (!strcmp(namebuf, "local-mac-address")) {
+                        prop_buf = np->vpd.local_mac;
+                        max_len = ETH_ALEN;
+                        found_mask |= FOUND_MASK_MAC;
+                } else if (!strcmp(namebuf, "num-mac-addresses")) {
+                        prop_buf = &np->vpd.mac_num;
+                        max_len = 1;
+                        found_mask |= FOUND_MASK_NMAC;
+                } else if (!strcmp(namebuf, "phy-type")) {
+                        prop_buf = np->vpd.phy_type;
+                        max_len = NIU_VPD_PHY_TYPE_MAX;
+                        found_mask |= FOUND_MASK_PHY;
+                }
+
+                if (max_len && prop_len > max_len) {
+                        dev_err(np->device, PFX "Property '%s' length (%d) is "
+                                "too long.\n", namebuf, prop_len);
+                        return -EINVAL;
+                }
+
+                if (prop_buf) {
+                        u32 off = start + 5 + err;
+                        int i;
+
+                        niudbg(PROBE, "VPD_SCAN: Reading in property [%s] "
+                               "len[%d]\n", namebuf, prop_len);
+                        for (i = 0; i < prop_len; i++)
+                                *prop_buf++ = niu_pci_eeprom_read(np, off + i);
+                }
+
+                start += len;
+        }
+
+        return 0;
+}
+
+/* ESPC_PIO_EN_ENABLE must be set */
+static void __devinit niu_pci_vpd_fetch(struct niu *np, u32 start)
+{
+        u32 offset;
+        int err;
+
+        err = niu_pci_eeprom_read16_swp(np, start + 1);
+        if (err < 0)
+                return;
+
+        offset = err + 3;
+
+        while (start + offset < ESPC_EEPROM_SIZE) {
+                u32 here = start + offset;
+                u32 end;
+
+                err = niu_pci_eeprom_read(np, here);
+                if (err != 0x90)
+                        return;
+
+                err = niu_pci_eeprom_read16_swp(np, here + 1);
+                if (err < 0)
+                        return;
+
+                here = start + offset + 3;
+                end = start + offset + err;
+
+                offset += err;
+
+                err = niu_pci_vpd_scan_props(np, here, end);
+                if (err < 0 || err == 1)
+                        return;
+        }
+}
+
+/* ESPC_PIO_EN_ENABLE must be set */
+static u32 __devinit niu_pci_vpd_offset(struct niu *np)
+{
+        u32 start = 0, end = ESPC_EEPROM_SIZE, ret;
+        int err;
+
+        while (start < end) {
+                ret = start;
+
+                /* ROM header signature?  */
+                err = niu_pci_eeprom_read16(np, start +  0);
+                if (err != 0x55aa)
+                        return 0;
+
+                /* Apply offset to PCI data structure.  */
+                err = niu_pci_eeprom_read16(np, start + 23);
+                if (err < 0)
+                        return 0;
+                start += err;
+
+                /* Check for "PCIR" signature.  */
+                err = niu_pci_eeprom_read16(np, start +  0);
+                if (err != 0x5043)
+                        return 0;
+                err = niu_pci_eeprom_read16(np, start +  2);
+                if (err != 0x4952)
+                        return 0;
+
+                /* Check for OBP image type.  */
+                err = niu_pci_eeprom_read(np, start + 20);
+                if (err < 0)
+                        return 0;
+                if (err != 0x01) {
+                        err = niu_pci_eeprom_read(np, ret + 2);
+                        if (err < 0)
+                                return 0;
+
+                        start = ret + (err * 512);
+                        continue;
+                }
+
+                err = niu_pci_eeprom_read16_swp(np, start + 8);
+                if (err < 0)
+                        return err;
+                ret += err;
+
+                err = niu_pci_eeprom_read(np, ret + 0);
+                if (err != 0x82)
+                        return 0;
+
+                return ret;
+        }
+
+        return 0;
+}
+
+static int __devinit niu_phy_type_prop_decode(struct niu *np,
+                                              const char *phy_prop)
+{
+        if (!strcmp(phy_prop, "mif")) {
+                /* 1G copper, MII */
+                np->flags &= ~(NIU_FLAGS_FIBER |
+                               NIU_FLAGS_10G);
+                np->mac_xcvr = MAC_XCVR_MII;
+        } else if (!strcmp(phy_prop, "xgf")) {
+                /* 10G fiber, XPCS */
+                np->flags |= (NIU_FLAGS_10G |
+                              NIU_FLAGS_FIBER);
+                np->mac_xcvr = MAC_XCVR_XPCS;
+        } else if (!strcmp(phy_prop, "pcs")) {
+                /* 1G fiber, PCS */
+                np->flags &= ~NIU_FLAGS_10G;
+                np->flags |= NIU_FLAGS_FIBER;
+                np->mac_xcvr = MAC_XCVR_PCS;
+        } else if (!strcmp(phy_prop, "xgc")) {
+                /* 10G copper, XPCS */
+                np->flags |= NIU_FLAGS_10G;
+                np->flags &= ~NIU_FLAGS_FIBER;
+                np->mac_xcvr = MAC_XCVR_XPCS;
+        } else {
+                return -EINVAL;
+        }
+        return 0;
+}
+
+static void __devinit niu_pci_vpd_validate(struct niu *np)
+{
+        struct net_device *dev = np->dev;
+        struct niu_vpd *vpd = &np->vpd;
+        u8 val8;
+
+        if (!is_valid_ether_addr(&vpd->local_mac[0])) {
+                dev_err(np->device, PFX "VPD MAC invalid, "
+                        "falling back to SPROM.\n");
+
+                np->flags &= ~NIU_FLAGS_VPD_VALID;
+                return;
+        }
+
+        if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
+                dev_err(np->device, PFX "Illegal phy string [%s].\n",
+                        np->vpd.phy_type);
+                dev_err(np->device, PFX "Falling back to SPROM.\n");
+                np->flags &= ~NIU_FLAGS_VPD_VALID;
+                return;
+        }
+
+        memcpy(dev->perm_addr, vpd->local_mac, ETH_ALEN);
+
+        val8 = dev->perm_addr[5];
+        dev->perm_addr[5] += np->port;
+        if (dev->perm_addr[5] < val8)
+                dev->perm_addr[4]++;
+
+        memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
+}
+
+static int __devinit niu_pci_probe_sprom(struct niu *np)
+{
+        struct net_device *dev = np->dev;
+        int len, i;
+        u64 val, sum;
+        u8 val8;
+
+        val = (nr64(ESPC_VER_IMGSZ) & ESPC_VER_IMGSZ_IMGSZ);
+        val >>= ESPC_VER_IMGSZ_IMGSZ_SHIFT;
+        len = val / 4;
+
+        np->eeprom_len = len;
+
+        niudbg(PROBE, "SPROM: Image size %llu\n", (unsigned long long) val);
+
+        sum = 0;
+        for (i = 0; i < len; i++) {
+                val = nr64(ESPC_NCR(i));
+                sum += (val >>  0) & 0xff;
+                sum += (val >>  8) & 0xff;
+                sum += (val >> 16) & 0xff;
+                sum += (val >> 24) & 0xff;
+        }
+        niudbg(PROBE, "SPROM: Checksum %x\n", (int)(sum & 0xff));
+        if ((sum & 0xff) != 0xab) {
+                dev_err(np->device, PFX "Bad SPROM checksum "
+                        "(%x, should be 0xab)\n", (int) (sum & 0xff));
+                return -EINVAL;
+        }
+
+        val = nr64(ESPC_PHY_TYPE);
+        switch (np->port) {
+        case 0:
+                val = (val & ESPC_PHY_TYPE_PORT0) >>
+                        ESPC_PHY_TYPE_PORT0_SHIFT;
+                break;
+        case 1:
+                val = (val & ESPC_PHY_TYPE_PORT1) >>
+                        ESPC_PHY_TYPE_PORT1_SHIFT;
+                break;
+        case 2:
+                val = (val & ESPC_PHY_TYPE_PORT2) >>
+                        ESPC_PHY_TYPE_PORT2_SHIFT;
+                break;
+        case 3:
+                val = (val & ESPC_PHY_TYPE_PORT3) >>
+                        ESPC_PHY_TYPE_PORT3_SHIFT;
+                break;
+        default:
+                dev_err(np->device, PFX "Bogus port number %u\n",
+                        np->port);
+                return -EINVAL;
+        }
+        niudbg(PROBE, "SPROM: PHY type %llx\n", (unsigned long long) val);
+
+        switch (val) {
+        case ESPC_PHY_TYPE_1G_COPPER:
+                /* 1G copper, MII */
+                np->flags &= ~(NIU_FLAGS_FIBER |
+                               NIU_FLAGS_10G);
+                np->mac_xcvr = MAC_XCVR_MII;
+                break;
+
+        case ESPC_PHY_TYPE_1G_FIBER:
+                /* 1G fiber, PCS */
+                np->flags &= ~NIU_FLAGS_10G;
+                np->flags |= NIU_FLAGS_FIBER;
+                np->mac_xcvr = MAC_XCVR_PCS;
+                break;
+
+        case ESPC_PHY_TYPE_10G_COPPER:
+                /* 10G copper, XPCS */
+                np->flags |= NIU_FLAGS_10G;
+                np->flags &= ~NIU_FLAGS_FIBER;
+                np->mac_xcvr = MAC_XCVR_XPCS;
+                break;
+
+        case ESPC_PHY_TYPE_10G_FIBER:
+                /* 10G fiber, XPCS */
+                np->flags |= (NIU_FLAGS_10G |
+                              NIU_FLAGS_FIBER);
+                np->mac_xcvr = MAC_XCVR_XPCS;
+                break;
+
+        default:
+                dev_err(np->device, PFX "Bogus SPROM phy type %llu\n",
+                        (unsigned long long) val);
+                return -EINVAL;
+        }
+
+        val = nr64(ESPC_MAC_ADDR0);
+        niudbg(PROBE, "SPROM: MAC_ADDR0[%08llx]\n",
+               (unsigned long long) val);
+        dev->perm_addr[0] = (val >>  0) & 0xff;
+        dev->perm_addr[1] = (val >>  8) & 0xff;
+        dev->perm_addr[2] = (val >> 16) & 0xff;
+        dev->perm_addr[3] = (val >> 24) & 0xff;
+
+        val = nr64(ESPC_MAC_ADDR1);
+        niudbg(PROBE, "SPROM: MAC_ADDR1[%08llx]\n",
+               (unsigned long long) val);
+        dev->perm_addr[4] = (val >>  0) & 0xff;
+        dev->perm_addr[5] = (val >>  8) & 0xff;
+
+        if (!is_valid_ether_addr(&dev->perm_addr[0])) {
+                dev_err(np->device, PFX "SPROM MAC address invalid\n");
+                dev_err(np->device, PFX "[ \n");
+                for (i = 0; i < 6; i++)
+                        printk("%02x ", dev->perm_addr[i]);
+                printk("]\n");
+                return -EINVAL;
+        }
+
+        val8 = dev->perm_addr[5];
+        dev->perm_addr[5] += np->port;
+        if (dev->perm_addr[5] < val8)
+                dev->perm_addr[4]++;
+
+        memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
+
+        val = nr64(ESPC_MOD_STR_LEN);
+        niudbg(PROBE, "SPROM: MOD_STR_LEN[%llu]\n",
+               (unsigned long long) val);
+        if (val > 8 * 4)
+                return -EINVAL;
+
+        for (i = 0; i < val; i += 4) {
+                u64 tmp = nr64(ESPC_NCR(5 + (i / 4)));
+
+                np->vpd.model[i + 3] = (tmp >>  0) & 0xff;
+                np->vpd.model[i + 2] = (tmp >>  8) & 0xff;
+                np->vpd.model[i + 1] = (tmp >> 16) & 0xff;
+                np->vpd.model[i + 0] = (tmp >> 24) & 0xff;
+        }
+        np->vpd.model[val] = '\0';
+
+        val = nr64(ESPC_BD_MOD_STR_LEN);
+        niudbg(PROBE, "SPROM: BD_MOD_STR_LEN[%llu]\n",
+               (unsigned long long) val);
+        if (val > 4 * 4)
+                return -EINVAL;
+
+        for (i = 0; i < val; i += 4) {
+                u64 tmp = nr64(ESPC_NCR(14 + (i / 4)));
+
+                np->vpd.board_model[i + 3] = (tmp >>  0) & 0xff;
+                np->vpd.board_model[i + 2] = (tmp >>  8) & 0xff;
+                np->vpd.board_model[i + 1] = (tmp >> 16) & 0xff;
+                np->vpd.board_model[i + 0] = (tmp >> 24) & 0xff;
+        }
+        np->vpd.board_model[val] = '\0';
+
+        np->vpd.mac_num =
+                nr64(ESPC_NUM_PORTS_MACS) & ESPC_NUM_PORTS_MACS_VAL;
+        niudbg(PROBE, "SPROM: NUM_PORTS_MACS[%d]\n",
+               np->vpd.mac_num);
+
+        return 0;
+}
+
+static int __devinit niu_get_and_validate_port(struct niu *np)
+{
+        struct niu_parent *parent = np->parent;
+
+        if (np->port <= 1)
+                np->flags |= NIU_FLAGS_XMAC;
+
+        if (!parent->num_ports) {
+                if (parent->plat_type == PLAT_TYPE_NIU) {
+                        parent->num_ports = 2;
+                } else {
+                        parent->num_ports = nr64(ESPC_NUM_PORTS_MACS) &
+                                ESPC_NUM_PORTS_MACS_VAL;
+
+                        if (!parent->num_ports)
+                                parent->num_ports = 4;
+                }
+        }
+
+        niudbg(PROBE, "niu_get_and_validate_port: port[%d] num_ports[%d]\n",
+               np->port, parent->num_ports);
+        if (np->port >= parent->num_ports)
+                return -ENODEV;
+
+        return 0;
+}
+
+static int __devinit phy_record(struct niu_parent *parent,
+                                struct phy_probe_info *p,
+                                int dev_id_1, int dev_id_2, u8 phy_port,
+                                int type)
+{
+        u32 id = (dev_id_1 << 16) | dev_id_2;
+        u8 idx;
+
+        if (dev_id_1 < 0 || dev_id_2 < 0)
+                return 0;
+        if (type == PHY_TYPE_PMA_PMD || type == PHY_TYPE_PCS) {
+                if ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM8704)
+                        return 0;
+        } else {
+                if ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM5464R)
+                        return 0;
+        }
+
+        pr_info("niu%d: Found PHY %08x type %s at phy_port %u\n",
+                parent->index, id,
+                (type == PHY_TYPE_PMA_PMD ?
+                 "PMA/PMD" :
+                 (type == PHY_TYPE_PCS ?
+                  "PCS" : "MII")),
+                phy_port);
+
+        if (p->cur[type] >= NIU_MAX_PORTS) {
+                printk(KERN_ERR PFX "Too many PHY ports.\n");
+                return -EINVAL;
+        }
+        idx = p->cur[type];
+        p->phy_id[type][idx] = id;
+        p->phy_port[type][idx] = phy_port;
+        p->cur[type] = idx + 1;
+        return 0;
+}
+
+static int __devinit port_has_10g(struct phy_probe_info *p, int port)
+{
+        int i;
+
+        for (i = 0; i < p->cur[PHY_TYPE_PMA_PMD]; i++) {
+                if (p->phy_port[PHY_TYPE_PMA_PMD][i] == port)
+                        return 1;
+        }
+        for (i = 0; i < p->cur[PHY_TYPE_PCS]; i++) {
+                if (p->phy_port[PHY_TYPE_PCS][i] == port)
+                        return 1;
+        }
+
+        return 0;
+}
+
+static int __devinit count_10g_ports(struct phy_probe_info *p, int *lowest)
+{
+        int port, cnt;
+
+        cnt = 0;
+        *lowest = 32;
+        for (port = 8; port < 32; port++) {
+                if (port_has_10g(p, port)) {
+                        if (!cnt)
+                                *lowest = port;
+                        cnt++;
+                }
+        }
+
+        return cnt;
+}
+
+static int __devinit count_1g_ports(struct phy_probe_info *p, int *lowest)
+{
+        *lowest = 32;
+        if (p->cur[PHY_TYPE_MII])
+                *lowest = p->phy_port[PHY_TYPE_MII][0];
+
+        return p->cur[PHY_TYPE_MII];
+}
+
+static void __devinit niu_n2_divide_channels(struct niu_parent *parent)
+{
+        int num_ports = parent->num_ports;
+        int i;
+
+        for (i = 0; i < num_ports; i++) {
+                parent->rxchan_per_port[i] = (16 / num_ports);
+                parent->txchan_per_port[i] = (16 / num_ports);
+
+                pr_info(PFX "niu%d: Port %u [%u RX chans] "
+                        "[%u TX chans]\n",
+                        parent->index, i,
+                        parent->rxchan_per_port[i],
+                        parent->txchan_per_port[i]);
+        }
+}
+
+static void __devinit niu_divide_channels(struct niu_parent *parent,
+                                          int num_10g, int num_1g)
+{
+        int num_ports = parent->num_ports;
+        int rx_chans_per_10g, rx_chans_per_1g;
+        int tx_chans_per_10g, tx_chans_per_1g;
+        int i, tot_rx, tot_tx;
+
+        if (!num_10g || !num_1g) {
+                rx_chans_per_10g = rx_chans_per_1g =
+                        (NIU_NUM_RXCHAN / num_ports);
+                tx_chans_per_10g = tx_chans_per_1g =
+                        (NIU_NUM_TXCHAN / num_ports);
+        } else {
+                rx_chans_per_1g = NIU_NUM_RXCHAN / 8;
+                rx_chans_per_10g = (NIU_NUM_RXCHAN -
+                                    (rx_chans_per_1g * num_1g)) /
+                        num_10g;
+
+                tx_chans_per_1g = NIU_NUM_TXCHAN / 6;
+                tx_chans_per_10g = (NIU_NUM_TXCHAN -
+                                    (tx_chans_per_1g * num_1g)) /
+                        num_10g;
+        }
+
+        tot_rx = tot_tx = 0;
+        for (i = 0; i < num_ports; i++) {
+                int type = phy_decode(parent->port_phy, i);
+
+                if (type == PORT_TYPE_10G) {
+                        parent->rxchan_per_port[i] = rx_chans_per_10g;
+                        parent->txchan_per_port[i] = tx_chans_per_10g;
+                } else {
+                        parent->rxchan_per_port[i] = rx_chans_per_1g;
+                        parent->txchan_per_port[i] = tx_chans_per_1g;
+                }
+                pr_info(PFX "niu%d: Port %u [%u RX chans] "
+                        "[%u TX chans]\n",
+                        parent->index, i,
+                        parent->rxchan_per_port[i],
+                        parent->txchan_per_port[i]);
+                tot_rx += parent->rxchan_per_port[i];
+                tot_tx += parent->txchan_per_port[i];
+        }
+
+        if (tot_rx > NIU_NUM_RXCHAN) {
+                printk(KERN_ERR PFX "niu%d: Too many RX channels (%d), "
+                       "resetting to one per port.\n",
+                       parent->index, tot_rx);
+                for (i = 0; i < num_ports; i++)
+                        parent->rxchan_per_port[i] = 1;
+        }
+        if (tot_tx > NIU_NUM_TXCHAN) {
+                printk(KERN_ERR PFX "niu%d: Too many TX channels (%d), "
+                       "resetting to one per port.\n",
+                       parent->index, tot_tx);
+                for (i = 0; i < num_ports; i++)
+                        parent->txchan_per_port[i] = 1;
+        }
+        if (tot_rx < NIU_NUM_RXCHAN || tot_tx < NIU_NUM_TXCHAN) {
+                printk(KERN_WARNING PFX "niu%d: Driver bug, wasted channels, "
+                       "RX[%d] TX[%d]\n",
+                       parent->index, tot_rx, tot_tx);
+        }
+}
+
+static void __devinit niu_divide_rdc_groups(struct niu_parent *parent,
+                                            int num_10g, int num_1g)
+{
+        int i, num_ports = parent->num_ports;
+        int rdc_group, rdc_groups_per_port;
+        int rdc_channel_base;
+
+        rdc_group = 0;
+        rdc_groups_per_port = NIU_NUM_RDC_TABLES / num_ports;
+
+        rdc_channel_base = 0;
+
+        for (i = 0; i < num_ports; i++) {
+                struct niu_rdc_tables *tp = &parent->rdc_group_cfg[i];
+                int grp, num_channels = parent->rxchan_per_port[i];
+                int this_channel_offset;
+
+                tp->first_table_num = rdc_group;
+                tp->num_tables = rdc_groups_per_port;
+                this_channel_offset = 0;
+                for (grp = 0; grp < tp->num_tables; grp++) {
+                        struct rdc_table *rt = &tp->tables[grp];
+                        int slot;
+
+                        pr_info(PFX "niu%d: Port %d RDC tbl(%d) [ ",
+                                parent->index, i, tp->first_table_num + grp);
+                        for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++) {
+                                rt->rxdma_channel[slot] =
+                                        rdc_channel_base + this_channel_offset;
+
+                                printk("%d ", rt->rxdma_channel[slot]);
+
+                                if (++this_channel_offset == num_channels)
+                                        this_channel_offset = 0;
+                        }
+                        printk("]\n");
+                }
+
+                parent->rdc_default[i] = rdc_channel_base;
+
+                rdc_channel_base += num_channels;
+                rdc_group += rdc_groups_per_port;
+        }
+}
+
+static int __devinit fill_phy_probe_info(struct niu *np,
+                                         struct niu_parent *parent,
+                                         struct phy_probe_info *info)
+{
+        unsigned long flags;
+        int port, err;
+
+        memset(info, 0, sizeof(*info));
+
+        /* Port 0 to 7 are reserved for onboard Serdes, probe the rest.  */
+        niu_lock_parent(np, flags);
+        err = 0;
+        for (port = 8; port < 32; port++) {
+                int dev_id_1, dev_id_2;
+
+                dev_id_1 = mdio_read(np, port,
+                                     NIU_PMA_PMD_DEV_ADDR, MII_PHYSID1);
+                dev_id_2 = mdio_read(np, port,
+                                     NIU_PMA_PMD_DEV_ADDR, MII_PHYSID2);
+                err = phy_record(parent, info, dev_id_1, dev_id_2, port,
+                                 PHY_TYPE_PMA_PMD);
+                if (err)
+                        break;
+                dev_id_1 = mdio_read(np, port,
+                                     NIU_PCS_DEV_ADDR, MII_PHYSID1);
+                dev_id_2 = mdio_read(np, port,
+                                     NIU_PCS_DEV_ADDR, MII_PHYSID2);
+                err = phy_record(parent, info, dev_id_1, dev_id_2, port,
+                                 PHY_TYPE_PCS);
+                if (err)
+                        break;
+                dev_id_1 = mii_read(np, port, MII_PHYSID1);
+                dev_id_2 = mii_read(np, port, MII_PHYSID2);
+                err = phy_record(parent, info, dev_id_1, dev_id_2, port,
+                                 PHY_TYPE_MII);
+                if (err)
+                        break;
+        }
+        niu_unlock_parent(np, flags);
+
+        return err;
+}
+
+static int __devinit walk_phys(struct niu *np, struct niu_parent *parent)
+{
+        struct phy_probe_info *info = &parent->phy_probe_info;
+        int lowest_10g, lowest_1g;
+        int num_10g, num_1g;
+        u32 val;
+        int err;
+
+        err = fill_phy_probe_info(np, parent, info);
+        if (err)
+                return err;
+
+        num_10g = count_10g_ports(info, &lowest_10g);
+        num_1g = count_1g_ports(info, &lowest_1g);
+
+        switch ((num_10g << 4) | num_1g) {
+        case 0x24:
+                if (lowest_1g == 10)
+                        parent->plat_type = PLAT_TYPE_VF_P0;
+                else if (lowest_1g == 26)
+                        parent->plat_type = PLAT_TYPE_VF_P1;
+                else
+                        goto unknown_vg_1g_port;
+
+                /* fallthru */
+        case 0x22:
+                val = (phy_encode(PORT_TYPE_10G, 0) |
+                       phy_encode(PORT_TYPE_10G, 1) |
+                       phy_encode(PORT_TYPE_1G, 2) |
+                       phy_encode(PORT_TYPE_1G, 3));
+                break;
+
+        case 0x20:
+                val = (phy_encode(PORT_TYPE_10G, 0) |
+                       phy_encode(PORT_TYPE_10G, 1));
+                break;
+
+        case 0x10:
+                val = phy_encode(PORT_TYPE_10G, np->port);
+                break;
+
+        case 0x14:
+                if (lowest_1g == 10)
+                        parent->plat_type = PLAT_TYPE_VF_P0;
+                else if (lowest_1g == 26)
+                        parent->plat_type = PLAT_TYPE_VF_P1;
+                else
+                        goto unknown_vg_1g_port;
+
+                /* fallthru */
+        case 0x13:
+                if ((lowest_10g & 0x7) == 0)
+                        val = (phy_encode(PORT_TYPE_10G, 0) |
+                               phy_encode(PORT_TYPE_1G, 1) |
+                               phy_encode(PORT_TYPE_1G, 2) |
+                               phy_encode(PORT_TYPE_1G, 3));
+                else
+                        val = (phy_encode(PORT_TYPE_1G, 0) |
+                               phy_encode(PORT_TYPE_10G, 1) |
+                               phy_encode(PORT_TYPE_1G, 2) |
+                               phy_encode(PORT_TYPE_1G, 3));
+                break;
+
+        case 0x04:
+                if (lowest_1g == 10)
+                        parent->plat_type = PLAT_TYPE_VF_P0;
+                else if (lowest_1g == 26)
+                        parent->plat_type = PLAT_TYPE_VF_P1;
+                else
+                        goto unknown_vg_1g_port;
+
+                val = (phy_encode(PORT_TYPE_1G, 0) |
+                       phy_encode(PORT_TYPE_1G, 1) |
+                       phy_encode(PORT_TYPE_1G, 2) |
+                       phy_encode(PORT_TYPE_1G, 3));
+                break;
+
+        default:
+                printk(KERN_ERR PFX "Unsupported port config "
+                       "10G[%d] 1G[%d]\n",
+                       num_10g, num_1g);
+                return -EINVAL;
+        }
+
+        parent->port_phy = val;
+
+        if (parent->plat_type == PLAT_TYPE_NIU)
+                niu_n2_divide_channels(parent);
+        else
+                niu_divide_channels(parent, num_10g, num_1g);
+
+        niu_divide_rdc_groups(parent, num_10g, num_1g);
+
+        return 0;
+
+unknown_vg_1g_port:
+        printk(KERN_ERR PFX "Cannot identify platform type, 1gport=%d\n",
+               lowest_1g);
+        return -EINVAL;
+}
+
+static int __devinit niu_probe_ports(struct niu *np)
+{
+        struct niu_parent *parent = np->parent;
+        int err, i;
+
+        niudbg(PROBE, "niu_probe_ports(): port_phy[%08x]\n",
+               parent->port_phy);
+
+        if (parent->port_phy == PORT_PHY_UNKNOWN) {
+                err = walk_phys(np, parent);
+                if (err)
+                        return err;
+
+                niu_set_ldg_timer_res(np, 2);
+                for (i = 0; i <= LDN_MAX; i++)
+                        niu_ldn_irq_enable(np, i, 0);
+        }
+
+        if (parent->port_phy == PORT_PHY_INVALID)
+                return -EINVAL;
+
+        return 0;
+}
+
+static int __devinit niu_classifier_swstate_init(struct niu *np)
+{
+        struct niu_classifier *cp = &np->clas;
+
+        niudbg(PROBE, "niu_classifier_swstate_init: num_tcam(%d)\n",
+               np->parent->tcam_num_entries);
+
+        cp->tcam_index = (u16) np->port;
+        cp->h1_init = 0xffffffff;
+        cp->h2_init = 0xffff;
+
+        return fflp_early_init(np);
+}
+
+static void __devinit niu_link_config_init(struct niu *np)
+{
+        struct niu_link_config *lp = &np->link_config;
+
+        lp->advertising = (ADVERTISED_10baseT_Half |
+                           ADVERTISED_10baseT_Full |
+                           ADVERTISED_100baseT_Half |
+                           ADVERTISED_100baseT_Full |
+                           ADVERTISED_1000baseT_Half |
+                           ADVERTISED_1000baseT_Full |
+                           ADVERTISED_10000baseT_Full |
+                           ADVERTISED_Autoneg);
+        lp->speed = lp->active_speed = SPEED_INVALID;
+        lp->duplex = lp->active_duplex = DUPLEX_INVALID;
+#if 0
+        lp->loopback_mode = LOOPBACK_MAC;
+        lp->active_speed = SPEED_10000;
+        lp->active_duplex = DUPLEX_FULL;
+#else
+        lp->loopback_mode = LOOPBACK_DISABLED;
+#endif
+}
+
+static int __devinit niu_init_mac_ipp_pcs_base(struct niu *np)
+{
+        switch (np->port) {
+        case 0:
+                np->mac_regs = np->regs + XMAC_PORT0_OFF;
+                np->ipp_off  = 0x00000;
+                np->pcs_off  = 0x04000;
+                np->xpcs_off = 0x02000;
+                break;
+
+        case 1:
+                np->mac_regs = np->regs + XMAC_PORT1_OFF;
+                np->ipp_off  = 0x08000;
+                np->pcs_off  = 0x0a000;
+                np->xpcs_off = 0x08000;
+                break;
+
+        case 2:
+                np->mac_regs = np->regs + BMAC_PORT2_OFF;
+                np->ipp_off  = 0x04000;
+                np->pcs_off  = 0x0e000;
+                np->xpcs_off = ~0UL;
+                break;
+
+        case 3:
+                np->mac_regs = np->regs + BMAC_PORT3_OFF;
+                np->ipp_off  = 0x0c000;
+                np->pcs_off  = 0x12000;
+                np->xpcs_off = ~0UL;
+                break;
+
+        default:
+                dev_err(np->device, PFX "Port %u is invalid, cannot "
+                        "compute MAC block offset.\n", np->port);
+                return -EINVAL;
+        }
+
+        return 0;
+}
+
+static void __devinit niu_try_msix(struct niu *np, u8 *ldg_num_map)
+{
+        struct msix_entry msi_vec[NIU_NUM_LDG];
+        struct niu_parent *parent = np->parent;
+        struct pci_dev *pdev = np->pdev;
+        int i, num_irqs, err;
+        u8 first_ldg;
+
+        first_ldg = (NIU_NUM_LDG / parent->num_ports) * np->port;
+        for (i = 0; i < (NIU_NUM_LDG / parent->num_ports); i++)
+                ldg_num_map[i] = first_ldg + i;
+
+        num_irqs = (parent->rxchan_per_port[np->port] +
+                    parent->txchan_per_port[np->port] +
+                    (np->port == 0 ? 3 : 1));
+        BUG_ON(num_irqs > (NIU_NUM_LDG / parent->num_ports));
+
+retry:
+        for (i = 0; i < num_irqs; i++) {
+                msi_vec[i].vector = 0;
+                msi_vec[i].entry = i;
+        }
+
+        err = pci_enable_msix(pdev, msi_vec, num_irqs);
+        if (err < 0) {
+                np->flags &= ~NIU_FLAGS_MSIX;
+                return;
+        }
+        if (err > 0) {
+                num_irqs = err;
+                goto retry;
+        }
+
+        np->flags |= NIU_FLAGS_MSIX;
+        for (i = 0; i < num_irqs; i++)
+                np->ldg[i].irq = msi_vec[i].vector;
+        np->num_ldg = num_irqs;
+}
+
+static int __devinit niu_n2_irq_init(struct niu *np, u8 *ldg_num_map)
+{
+#ifdef CONFIG_SPARC64
+        struct of_device *op = np->op;
+        const u32 *int_prop;
+        int i;
+
+        int_prop = of_get_property(op->node, "interrupts", NULL);
+        if (!int_prop)
+                return -ENODEV;
+
+        for (i = 0; i < op->num_irqs; i++) {
+                ldg_num_map[i] = int_prop[i];
+                np->ldg[i].irq = op->irqs[i];
+        }
+
+        np->num_ldg = op->num_irqs;
+
+        return 0;
+#else
+        return -EINVAL;
+#endif
+}
+
+static int __devinit niu_ldg_init(struct niu *np)
+{
+        struct niu_parent *parent = np->parent;
+        u8 ldg_num_map[NIU_NUM_LDG];
+        int first_chan, num_chan;
+        int i, err, ldg_rotor;
+        u8 port;
+
+        np->num_ldg = 1;
+        np->ldg[0].irq = np->dev->irq;
+        if (parent->plat_type == PLAT_TYPE_NIU) {
+                err = niu_n2_irq_init(np, ldg_num_map);
+                if (err)
+                        return err;
+        } else
+                niu_try_msix(np, ldg_num_map);
+
+        port = np->port;
+        for (i = 0; i < np->num_ldg; i++) {
+                struct niu_ldg *lp = &np->ldg[i];
+
+                netif_napi_add(np->dev, &lp->napi, niu_poll, 64);
+
+                lp->np = np;
+                lp->ldg_num = ldg_num_map[i];
+                lp->timer = 2; /* XXX */
+
+                /* On N2 NIU the firmware has setup the SID mappings so they go
+                 * to the correct values that will route the LDG to the proper
+                 * interrupt in the NCU interrupt table.
+                 */
+                if (np->parent->plat_type != PLAT_TYPE_NIU) {
+                        err = niu_set_ldg_sid(np, lp->ldg_num, port, i);
+                        if (err)
+                                return err;
+                }
+        }
+
+        /* We adopt the LDG assignment ordering used by the N2 NIU
+         * 'interrupt' properties because that simplifies a lot of
+         * things.  This ordering is:
+         *
+         *      MAC
+         *      MIF     (if port zero)
+         *      SYSERR  (if port zero)
+         *      RX channels
+         *      TX channels
+         */
+
+        ldg_rotor = 0;
+
+        err = niu_ldg_assign_ldn(np, parent, ldg_num_map[ldg_rotor],
+                                  LDN_MAC(port));
+        if (err)
+                return err;
+
+        ldg_rotor++;
+        if (ldg_rotor == np->num_ldg)
+                ldg_rotor = 0;
+
+        if (port == 0) {
+                err = niu_ldg_assign_ldn(np, parent,
+                                         ldg_num_map[ldg_rotor],
+                                         LDN_MIF);
+                if (err)
+                        return err;
+
+                ldg_rotor++;
+                if (ldg_rotor == np->num_ldg)
+                        ldg_rotor = 0;
+
+                err = niu_ldg_assign_ldn(np, parent,
+                                         ldg_num_map[ldg_rotor],
+                                         LDN_DEVICE_ERROR);
+                if (err)
+                        return err;
+
+                ldg_rotor++;
+                if (ldg_rotor == np->num_ldg)
+                        ldg_rotor = 0;
+
+        }
+
+        first_chan = 0;
+        for (i = 0; i < port; i++)
+                first_chan += parent->rxchan_per_port[port];
+        num_chan = parent->rxchan_per_port[port];
+
+        for (i = first_chan; i < (first_chan + num_chan); i++) {
+                err = niu_ldg_assign_ldn(np, parent,
+                                         ldg_num_map[ldg_rotor],
+                                         LDN_RXDMA(i));
+                if (err)
+                        return err;
+                ldg_rotor++;
+                if (ldg_rotor == np->num_ldg)
+                        ldg_rotor = 0;
+        }
+
+        first_chan = 0;
+        for (i = 0; i < port; i++)
+                first_chan += parent->txchan_per_port[port];
+        num_chan = parent->txchan_per_port[port];
+        for (i = first_chan; i < (first_chan + num_chan); i++) {
+                err = niu_ldg_assign_ldn(np, parent,
+                                         ldg_num_map[ldg_rotor],
+                                         LDN_TXDMA(i));
+                if (err)
+                        return err;
+                ldg_rotor++;
+                if (ldg_rotor == np->num_ldg)
+                        ldg_rotor = 0;
+        }
+
+        return 0;
+}
+
+static void __devexit niu_ldg_free(struct niu *np)
+{
+        if (np->flags & NIU_FLAGS_MSIX)
+                pci_disable_msix(np->pdev);
+}
+
+static int __devinit niu_get_of_props(struct niu *np)
+{
+#ifdef CONFIG_SPARC64
+        struct net_device *dev = np->dev;
+        struct device_node *dp;
+        const char *phy_type;
+        const u8 *mac_addr;
+        int prop_len;
+
+        if (np->parent->plat_type == PLAT_TYPE_NIU)
+                dp = np->op->node;
+        else
+                dp = pci_device_to_OF_node(np->pdev);
+
+        phy_type = of_get_property(dp, "phy-type", &prop_len);
+        if (!phy_type) {
+                dev_err(np->device, PFX "%s: OF node lacks "
+                        "phy-type property\n",
+                        dp->full_name);
+                return -EINVAL;
+        }
+
+        if (!strcmp(phy_type, "none"))
+                return -ENODEV;
+
+        strcpy(np->vpd.phy_type, phy_type);
+
+        if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
+                dev_err(np->device, PFX "%s: Illegal phy string [%s].\n",
+                        dp->full_name, np->vpd.phy_type);
+                return -EINVAL;
+        }
+
+        mac_addr = of_get_property(dp, "local-mac-address", &prop_len);
+        if (!mac_addr) {
+                dev_err(np->device, PFX "%s: OF node lacks "
+                        "local-mac-address property\n",
+                        dp->full_name);
+                return -EINVAL;
+        }
+        if (prop_len != dev->addr_len) {
+                dev_err(np->device, PFX "%s: OF MAC address prop len (%d) "
+                        "is wrong.\n",
+                        dp->full_name, prop_len);
+        }
+        memcpy(dev->perm_addr, mac_addr, dev->addr_len);
+        if (!is_valid_ether_addr(&dev->perm_addr[0])) {
+                int i;
+
+                dev_err(np->device, PFX "%s: OF MAC address is invalid\n",
+                        dp->full_name);
+                dev_err(np->device, PFX "%s: [ \n",
+                        dp->full_name);
+                for (i = 0; i < 6; i++)
+                        printk("%02x ", dev->perm_addr[i]);
+                printk("]\n");
+                return -EINVAL;
+        }
+
+        memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
+
+        return 0;
+#else
+        return -EINVAL;
+#endif
+}
+
+static int __devinit niu_get_invariants(struct niu *np)
+{
+        int err, have_props;
+        u32 offset;
+
+        err = niu_get_of_props(np);
+        if (err == -ENODEV)
+                return err;
+
+        have_props = !err;
+
+        err = niu_get_and_validate_port(np);
+        if (err)
+                return err;
+
+        err = niu_init_mac_ipp_pcs_base(np);
+        if (err)
+                return err;
+
+        if (!have_props) {
+                if (np->parent->plat_type == PLAT_TYPE_NIU)
+                        return -EINVAL;
+
+                nw64(ESPC_PIO_EN, ESPC_PIO_EN_ENABLE);
+                offset = niu_pci_vpd_offset(np);
+                niudbg(PROBE, "niu_get_invariants: VPD offset [%08x]\n",
+                       offset);
+                if (offset)
+                        niu_pci_vpd_fetch(np, offset);
+                nw64(ESPC_PIO_EN, 0);
+
+                if (np->flags & NIU_FLAGS_VPD_VALID)
+                        niu_pci_vpd_validate(np);
+
+                if (!(np->flags & NIU_FLAGS_VPD_VALID)) {
+                        err = niu_pci_probe_sprom(np);
+                        if (err)
+                                return err;
+                }
+        }
+
+        err = niu_probe_ports(np);
+        if (err)
+                return err;
+
+        niu_ldg_init(np);
+
+        niu_classifier_swstate_init(np);
+        niu_link_config_init(np);
+
+        err = niu_determine_phy_disposition(np);
+        if (!err)
+                err = niu_init_link(np);
+
+        return err;
+}
+
+static LIST_HEAD(niu_parent_list);
+static DEFINE_MUTEX(niu_parent_lock);
+static int niu_parent_index;
+
+static ssize_t show_port_phy(struct device *dev,
+                             struct device_attribute *attr, char *buf)
+{
+        struct platform_device *plat_dev = to_platform_device(dev);
+        struct niu_parent *p = plat_dev->dev.platform_data;
+        u32 port_phy = p->port_phy;
+        char *orig_buf = buf;
+        int i;
+
+        if (port_phy == PORT_PHY_UNKNOWN ||
+            port_phy == PORT_PHY_INVALID)
+                return 0;
+
+        for (i = 0; i < p->num_ports; i++) {
+                const char *type_str;
+                int type;
+
+                type = phy_decode(port_phy, i);
+                if (type == PORT_TYPE_10G)
+                        type_str = "10G";
+                else
+                        type_str = "1G";
+                buf += sprintf(buf,
+                               (i == 0) ? "%s" : " %s",
+                               type_str);
+        }
+        buf += sprintf(buf, "\n");
+        return buf - orig_buf;
+}
+
+static ssize_t show_plat_type(struct device *dev,
+                              struct device_attribute *attr, char *buf)
+{
+        struct platform_device *plat_dev = to_platform_device(dev);
+        struct niu_parent *p = plat_dev->dev.platform_data;
+        const char *type_str;
+
+        switch (p->plat_type) {
+        case PLAT_TYPE_ATLAS:
+                type_str = "atlas";
+                break;
+        case PLAT_TYPE_NIU:
+                type_str = "niu";
+                break;
+        case PLAT_TYPE_VF_P0:
+                type_str = "vf_p0";
+                break;
+        case PLAT_TYPE_VF_P1:
+                type_str = "vf_p1";
+                break;
+        default:
+                type_str = "unknown";
+                break;
+        }
+
+        return sprintf(buf, "%s\n", type_str);
+}
+
+static ssize_t __show_chan_per_port(struct device *dev,
+                                    struct device_attribute *attr, char *buf,
+                                    int rx)
+{
+        struct platform_device *plat_dev = to_platform_device(dev);
+        struct niu_parent *p = plat_dev->dev.platform_data;
+        char *orig_buf = buf;
+        u8 *arr;
+        int i;
+
+        arr = (rx ? p->rxchan_per_port : p->txchan_per_port);
+
+        for (i = 0; i < p->num_ports; i++) {
+                buf += sprintf(buf,
+                               (i == 0) ? "%d" : " %d",
+                               arr[i]);
+        }
+        buf += sprintf(buf, "\n");
+
+        return buf - orig_buf;
+}
+
+static ssize_t show_rxchan_per_port(struct device *dev,
+                                    struct device_attribute *attr, char *buf)
+{
+        return __show_chan_per_port(dev, attr, buf, 1);
+}
+
+static ssize_t show_txchan_per_port(struct device *dev,
+                                    struct device_attribute *attr, char *buf)
+{
+        return __show_chan_per_port(dev, attr, buf, 1);
+}
+
+static ssize_t show_num_ports(struct device *dev,
+                              struct device_attribute *attr, char *buf)
+{
+        struct platform_device *plat_dev = to_platform_device(dev);
+        struct niu_parent *p = plat_dev->dev.platform_data;
+
+        return sprintf(buf, "%d\n", p->num_ports);
+}
+
+static struct device_attribute niu_parent_attributes[] = {
+        __ATTR(port_phy, S_IRUGO, show_port_phy, NULL),
+        __ATTR(plat_type, S_IRUGO, show_plat_type, NULL),
+        __ATTR(rxchan_per_port, S_IRUGO, show_rxchan_per_port, NULL),
+        __ATTR(txchan_per_port, S_IRUGO, show_txchan_per_port, NULL),
+        __ATTR(num_ports, S_IRUGO, show_num_ports, NULL),
+        {}
+};
+
+static struct niu_parent * __devinit niu_new_parent(struct niu *np,
+                                                    union niu_parent_id *id,
+                                                    u8 ptype)
+{
+        struct platform_device *plat_dev;
+        struct niu_parent *p;
+        int i;
+
+        niudbg(PROBE, "niu_new_parent: Creating new parent.\n");
+
+        plat_dev = platform_device_register_simple("niu", niu_parent_index,
+                                                   NULL, 0);
+        if (!plat_dev)
+                return NULL;
+
+        for (i = 0; attr_name(niu_parent_attributes[i]); i++) {
+                int err = device_create_file(&plat_dev->dev,
+                                             &niu_parent_attributes[i]);
+                if (err)
+                        goto fail_unregister;
+        }
+
+        p = kzalloc(sizeof(*p), GFP_KERNEL);
+        if (!p)
+                goto fail_unregister;
+
+        p->index = niu_parent_index++;
+
+        plat_dev->dev.platform_data = p;
+        p->plat_dev = plat_dev;
+
+        memcpy(&p->id, id, sizeof(*id));
+        p->plat_type = ptype;
+        INIT_LIST_HEAD(&p->list);
+        atomic_set(&p->refcnt, 0);
+        list_add(&p->list, &niu_parent_list);
+        spin_lock_init(&p->lock);
+
+        p->rxdma_clock_divider = 7500;
+
+        p->tcam_num_entries = NIU_PCI_TCAM_ENTRIES;
+        if (p->plat_type == PLAT_TYPE_NIU)
+                p->tcam_num_entries = NIU_NONPCI_TCAM_ENTRIES;
+
+        for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
+                int index = i - CLASS_CODE_USER_PROG1;
+
+                p->tcam_key[index] = TCAM_KEY_TSEL;
+                p->flow_key[index] = (FLOW_KEY_IPSA |
+                                      FLOW_KEY_IPDA |
+                                      FLOW_KEY_PROTO |
+                                      (FLOW_KEY_L4_BYTE12 <<
+                                       FLOW_KEY_L4_0_SHIFT) |
+                                      (FLOW_KEY_L4_BYTE12 <<
+                                       FLOW_KEY_L4_1_SHIFT));
+        }
+
+        for (i = 0; i < LDN_MAX + 1; i++)
+                p->ldg_map[i] = LDG_INVALID;
+
+        return p;
+
+fail_unregister:
+        platform_device_unregister(plat_dev);
+        return NULL;
+}
+
+static struct niu_parent * __devinit niu_get_parent(struct niu *np,
+                                                    union niu_parent_id *id,
+                                                    u8 ptype)
+{
+        struct niu_parent *p, *tmp;
+        int port = np->port;
+
+        niudbg(PROBE, "niu_get_parent: platform_type[%u] port[%u]\n",
+               ptype, port);
+
+        mutex_lock(&niu_parent_lock);
+        p = NULL;
+        list_for_each_entry(tmp, &niu_parent_list, list) {
+                if (!memcmp(id, &tmp->id, sizeof(*id))) {
+                        p = tmp;
+                        break;
+                }
+        }
+        if (!p)
+                p = niu_new_parent(np, id, ptype);
+
+        if (p) {
+                char port_name[6];
+                int err;
+
+                sprintf(port_name, "port%d", port);
+                err = sysfs_create_link(&p->plat_dev->dev.kobj,
+                                        &np->device->kobj,
+                                        port_name);
+                if (!err) {
+                        p->ports[port] = np;
+                        atomic_inc(&p->refcnt);
+                }
+        }
+        mutex_unlock(&niu_parent_lock);
+
+        return p;
+}
+
+static void niu_put_parent(struct niu *np)
+{
+        struct niu_parent *p = np->parent;
+        u8 port = np->port;
+        char port_name[6];
+
+        BUG_ON(!p || p->ports[port] != np);
+
+        niudbg(PROBE, "niu_put_parent: port[%u]\n", port);
+
+        sprintf(port_name, "port%d", port);
+
+        mutex_lock(&niu_parent_lock);
+
+        sysfs_remove_link(&p->plat_dev->dev.kobj, port_name);
+
+        p->ports[port] = NULL;
+        np->parent = NULL;
+
+        if (atomic_dec_and_test(&p->refcnt)) {
+                list_del(&p->list);
+                platform_device_unregister(p->plat_dev);
+        }
+
+        mutex_unlock(&niu_parent_lock);
+}
+
+static void *niu_pci_alloc_coherent(struct device *dev, size_t size,
+                                    u64 *handle, gfp_t flag)
+{
+        dma_addr_t dh;
+        void *ret;
+
+        ret = dma_alloc_coherent(dev, size, &dh, flag);
+        if (ret)
+                *handle = dh;
+        return ret;
+}
+
+static void niu_pci_free_coherent(struct device *dev, size_t size,
+                                  void *cpu_addr, u64 handle)
+{
+        dma_free_coherent(dev, size, cpu_addr, handle);
+}
+
+static u64 niu_pci_map_page(struct device *dev, struct page *page,
+                            unsigned long offset, size_t size,
+                            enum dma_data_direction direction)
+{
+        return dma_map_page(dev, page, offset, size, direction);
+}
+
+static void niu_pci_unmap_page(struct device *dev, u64 dma_address,
+                               size_t size, enum dma_data_direction direction)
+{
+        return dma_unmap_page(dev, dma_address, size, direction);
+}
+
+static u64 niu_pci_map_single(struct device *dev, void *cpu_addr,
+                              size_t size,
+                              enum dma_data_direction direction)
+{
+        return dma_map_single(dev, cpu_addr, size, direction);
+}
+
+static void niu_pci_unmap_single(struct device *dev, u64 dma_address,
+                                 size_t size,
+                                 enum dma_data_direction direction)
+{
+        dma_unmap_single(dev, dma_address, size, direction);
+}
+
+static const struct niu_ops niu_pci_ops = {
+        .alloc_coherent = niu_pci_alloc_coherent,
+        .free_coherent  = niu_pci_free_coherent,
+        .map_page       = niu_pci_map_page,
+        .unmap_page     = niu_pci_unmap_page,
+        .map_single     = niu_pci_map_single,
+        .unmap_single   = niu_pci_unmap_single,
+};
+
+static void __devinit niu_driver_version(void)
+{
+        static int niu_version_printed;
+
+        if (niu_version_printed++ == 0)
+                pr_info("%s", version);
+}
+
+static struct net_device * __devinit niu_alloc_and_init(
+        struct device *gen_dev, struct pci_dev *pdev,
+        struct of_device *op, const struct niu_ops *ops,
+        u8 port)
+{
+        struct net_device *dev = alloc_etherdev(sizeof(struct niu));
+        struct niu *np;
+
+        if (!dev) {
+                dev_err(gen_dev, PFX "Etherdev alloc failed, aborting.\n");
+                return NULL;
+        }
+
+        SET_NETDEV_DEV(dev, gen_dev);
+
+        np = netdev_priv(dev);
+        np->dev = dev;
+        np->pdev = pdev;
+        np->op = op;
+        np->device = gen_dev;
+        np->ops = ops;
+
+        np->msg_enable = niu_debug;
+
+        spin_lock_init(&np->lock);
+        INIT_WORK(&np->reset_task, niu_reset_task);
+
+        np->port = port;
+
+        return dev;
+}
+
+static void __devinit niu_assign_netdev_ops(struct net_device *dev)
+{
+        dev->open = niu_open;
+        dev->stop = niu_close;
+        dev->get_stats = niu_get_stats;
+        dev->set_multicast_list = niu_set_rx_mode;
+        dev->set_mac_address = niu_set_mac_addr;
+        dev->do_ioctl = niu_ioctl;
+        dev->tx_timeout = niu_tx_timeout;
+        dev->hard_start_xmit = niu_start_xmit;
+        dev->ethtool_ops = &niu_ethtool_ops;
+        dev->watchdog_timeo = NIU_TX_TIMEOUT;
+        dev->change_mtu = niu_change_mtu;
+}
+
+static void __devinit niu_device_announce(struct niu *np)
+{
+        struct net_device *dev = np->dev;
+        int i;
+
+        pr_info("%s: NIU Ethernet ", dev->name);
+        for (i = 0; i < 6; i++)
+                printk("%2.2x%c", dev->dev_addr[i],
+                       i == 5 ? '\n' : ':');
+
+        pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
+                dev->name,
+                (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
+                (np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
+                (np->flags & NIU_FLAGS_FIBER ? "FIBER" : "COPPER"),
+                (np->mac_xcvr == MAC_XCVR_MII ? "MII" :
+                 (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
+                np->vpd.phy_type);
+}
+
+static int __devinit niu_pci_init_one(struct pci_dev *pdev,
+                                      const struct pci_device_id *ent)
+{
+        unsigned long niureg_base, niureg_len;
+        union niu_parent_id parent_id;
+        struct net_device *dev;
+        struct niu *np;
+        int err, pos;
+        u64 dma_mask;
+        u16 val16;
+
+        niu_driver_version();
+
+        err = pci_enable_device(pdev);
+        if (err) {
+                dev_err(&pdev->dev, PFX "Cannot enable PCI device, "
+                        "aborting.\n");
+                return err;
+        }
+
+        if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
+            !(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
+                dev_err(&pdev->dev, PFX "Cannot find proper PCI device "
+                        "base addresses, aborting.\n");
+                err = -ENODEV;
+                goto err_out_disable_pdev;
+        }
+
+        err = pci_request_regions(pdev, DRV_MODULE_NAME);
+        if (err) {
+                dev_err(&pdev->dev, PFX "Cannot obtain PCI resources, "
+                        "aborting.\n");
+                goto err_out_disable_pdev;
+        }
+
+        pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
+        if (pos <= 0) {
+                dev_err(&pdev->dev, PFX "Cannot find PCI Express capability, "
+                        "aborting.\n");
+                goto err_out_free_res;
+        }
+
+        dev = niu_alloc_and_init(&pdev->dev, pdev, NULL,
+                                 &niu_pci_ops, PCI_FUNC(pdev->devfn));
+        if (!dev) {
+                err = -ENOMEM;
+                goto err_out_free_res;
+        }
+        np = netdev_priv(dev);
+
+        memset(&parent_id, 0, sizeof(parent_id));
+        parent_id.pci.domain = pci_domain_nr(pdev->bus);
+        parent_id.pci.bus = pdev->bus->number;
+        parent_id.pci.device = PCI_SLOT(pdev->devfn);
+
+        np->parent = niu_get_parent(np, &parent_id,
+                                    PLAT_TYPE_ATLAS);
+        if (!np->parent) {
+                err = -ENOMEM;
+                goto err_out_free_dev;
+        }
+
+        pci_read_config_word(pdev, pos + PCI_EXP_DEVCTL, &val16);
+        val16 &= ~PCI_EXP_DEVCTL_NOSNOOP_EN;
+        val16 |= (PCI_EXP_DEVCTL_CERE |
+                  PCI_EXP_DEVCTL_NFERE |
+                  PCI_EXP_DEVCTL_FERE |
+                  PCI_EXP_DEVCTL_URRE |
+                  PCI_EXP_DEVCTL_RELAX_EN);
+        pci_write_config_word(pdev, pos + PCI_EXP_DEVCTL, val16);
+
+        dma_mask = DMA_44BIT_MASK;
+        err = pci_set_dma_mask(pdev, dma_mask);
+        if (!err) {
+                dev->features |= NETIF_F_HIGHDMA;
+                err = pci_set_consistent_dma_mask(pdev, dma_mask);
+                if (err) {
+                        dev_err(&pdev->dev, PFX "Unable to obtain 44 bit "
+                                "DMA for consistent allocations, "
+                                "aborting.\n");
+                        goto err_out_release_parent;
+                }
+        }
+        if (err || dma_mask == DMA_32BIT_MASK) {
+                err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
+                if (err) {
+                        dev_err(&pdev->dev, PFX "No usable DMA configuration, "
+                                "aborting.\n");
+                        goto err_out_release_parent;
+                }
+        }
+
+        dev->features |= (NETIF_F_SG | NETIF_F_HW_CSUM);
+
+        niureg_base = pci_resource_start(pdev, 0);
+        niureg_len = pci_resource_len(pdev, 0);
+
+        np->regs = ioremap_nocache(niureg_base, niureg_len);
+        if (!np->regs) {
+                dev_err(&pdev->dev, PFX "Cannot map device registers, "
+                        "aborting.\n");
+                err = -ENOMEM;
+                goto err_out_release_parent;
+        }
+
+        pci_set_master(pdev);
+        pci_save_state(pdev);
+
+        dev->irq = pdev->irq;
+
+        niu_assign_netdev_ops(dev);
+
+        err = niu_get_invariants(np);
+        if (err) {
+                if (err != -ENODEV)
+                        dev_err(&pdev->dev, PFX "Problem fetching invariants "
+                                "of chip, aborting.\n");
+                goto err_out_iounmap;
+        }
+
+        err = register_netdev(dev);
+        if (err) {
+                dev_err(&pdev->dev, PFX "Cannot register net device, "
+                        "aborting.\n");
+                goto err_out_iounmap;
+        }
+
+        pci_set_drvdata(pdev, dev);
+
+        niu_device_announce(np);
+
+        return 0;
+
+err_out_iounmap:
+        if (np->regs) {
+                iounmap(np->regs);
+                np->regs = NULL;
+        }
+
+err_out_release_parent:
+        niu_put_parent(np);
+
+err_out_free_dev:
+        free_netdev(dev);
+
+err_out_free_res:
+        pci_release_regions(pdev);
+
+err_out_disable_pdev:
+        pci_disable_device(pdev);
+        pci_set_drvdata(pdev, NULL);
+
+        return err;
+}
+
+static void __devexit niu_pci_remove_one(struct pci_dev *pdev)
+{
+        struct net_device *dev = pci_get_drvdata(pdev);
+
+        if (dev) {
+                struct niu *np = netdev_priv(dev);
+
+                unregister_netdev(dev);
+                if (np->regs) {
+                        iounmap(np->regs);
+                        np->regs = NULL;
+                }
+
+                niu_ldg_free(np);
+
+                niu_put_parent(np);
+
+                free_netdev(dev);
+                pci_release_regions(pdev);
+                pci_disable_device(pdev);
+                pci_set_drvdata(pdev, NULL);
+        }
+}
+
+static int niu_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+        struct net_device *dev = pci_get_drvdata(pdev);
+        struct niu *np = netdev_priv(dev);
+        unsigned long flags;
+
+        if (!netif_running(dev))
+                return 0;
+
+        flush_scheduled_work();
+        niu_netif_stop(np);
+
+        del_timer_sync(&np->timer);
+
+        spin_lock_irqsave(&np->lock, flags);
+        niu_enable_interrupts(np, 0);
+        spin_unlock_irqrestore(&np->lock, flags);
+
+        netif_device_detach(dev);
+
+        spin_lock_irqsave(&np->lock, flags);
+        niu_stop_hw(np);
+        spin_unlock_irqrestore(&np->lock, flags);
+
+        pci_save_state(pdev);
+
+        return 0;
+}
+
+static int niu_resume(struct pci_dev *pdev)
+{
+        struct net_device *dev = pci_get_drvdata(pdev);
+        struct niu *np = netdev_priv(dev);
+        unsigned long flags;
+        int err;
+
+        if (!netif_running(dev))
+                return 0;
+
+        pci_restore_state(pdev);
+
+        netif_device_attach(dev);
+
+        spin_lock_irqsave(&np->lock, flags);
+
+        err = niu_init_hw(np);
+        if (!err) {
+                np->timer.expires = jiffies + HZ;
+                add_timer(&np->timer);
+                niu_netif_start(np);
+        }
+
+        spin_unlock_irqrestore(&np->lock, flags);
+
+        return err;
+}
+
+static struct pci_driver niu_pci_driver = {
+        .name           = DRV_MODULE_NAME,
+        .id_table       = niu_pci_tbl,
+        .probe          = niu_pci_init_one,
+        .remove         = __devexit_p(niu_pci_remove_one),
+        .suspend        = niu_suspend,
+        .resume         = niu_resume,
+};
+
+#ifdef CONFIG_SPARC64
+static void *niu_phys_alloc_coherent(struct device *dev, size_t size,
+                                     u64 *dma_addr, gfp_t flag)
+{
+        unsigned long order = get_order(size);
+        unsigned long page = __get_free_pages(flag, order);
+
+        if (page == 0UL)
+                return NULL;
+        memset((char *)page, 0, PAGE_SIZE << order);
+        *dma_addr = __pa(page);
+
+        return (void *) page;
+}
+
+static void niu_phys_free_coherent(struct device *dev, size_t size,
+                                   void *cpu_addr, u64 handle)
+{
+        unsigned long order = get_order(size);
+
+        free_pages((unsigned long) cpu_addr, order);
+}
+
+static u64 niu_phys_map_page(struct device *dev, struct page *page,
+                             unsigned long offset, size_t size,
+                             enum dma_data_direction direction)
+{
+        return page_to_phys(page) + offset;
+}
+
+static void niu_phys_unmap_page(struct device *dev, u64 dma_address,
+                                size_t size, enum dma_data_direction direction)
+{
+        /* Nothing to do.  */
+}
+
+static u64 niu_phys_map_single(struct device *dev, void *cpu_addr,
+                               size_t size,
+                               enum dma_data_direction direction)
+{
+        return __pa(cpu_addr);
+}
+
+static void niu_phys_unmap_single(struct device *dev, u64 dma_address,
+                                  size_t size,
+                                  enum dma_data_direction direction)
+{
+        /* Nothing to do.  */
+}
+
+static const struct niu_ops niu_phys_ops = {
+        .alloc_coherent = niu_phys_alloc_coherent,
+        .free_coherent  = niu_phys_free_coherent,
+        .map_page       = niu_phys_map_page,
+        .unmap_page     = niu_phys_unmap_page,
+        .map_single     = niu_phys_map_single,
+        .unmap_single   = niu_phys_unmap_single,
+};
+
+static unsigned long res_size(struct resource *r)
+{
+        return r->end - r->start + 1UL;
+}
+
+static int __devinit niu_of_probe(struct of_device *op,
+                                  const struct of_device_id *match)
+{
+        union niu_parent_id parent_id;
+        struct net_device *dev;
+        struct niu *np;
+        const u32 *reg;
+        int err;
+
+        niu_driver_version();
+
+        reg = of_get_property(op->node, "reg", NULL);
+        if (!reg) {
+                dev_err(&op->dev, PFX "%s: No 'reg' property, aborting.\n",
+                        op->node->full_name);
+                return -ENODEV;
+        }
+
+        dev = niu_alloc_and_init(&op->dev, NULL, op,
+                                 &niu_phys_ops, reg[0] & 0x1);
+        if (!dev) {
+                err = -ENOMEM;
+                goto err_out;
+        }
+        np = netdev_priv(dev);
+
+        memset(&parent_id, 0, sizeof(parent_id));
+        parent_id.of = of_get_parent(op->node);
+
+        np->parent = niu_get_parent(np, &parent_id,
+                                    PLAT_TYPE_NIU);
+        if (!np->parent) {
+                err = -ENOMEM;
+                goto err_out_free_dev;
+        }
+
+        dev->features |= (NETIF_F_SG | NETIF_F_HW_CSUM);
+
+        np->regs = of_ioremap(&op->resource[1], 0,
+                              res_size(&op->resource[1]),
+                              "niu regs");
+        if (!np->regs) {
+                dev_err(&op->dev, PFX "Cannot map device registers, "
+                        "aborting.\n");
+                err = -ENOMEM;
+                goto err_out_release_parent;
+        }
+
+        np->vir_regs_1 = of_ioremap(&op->resource[2], 0,
+                                    res_size(&op->resource[2]),
+                                    "niu vregs-1");
+        if (!np->vir_regs_1) {
+                dev_err(&op->dev, PFX "Cannot map device vir registers 1, "
+                        "aborting.\n");
+                err = -ENOMEM;
+                goto err_out_iounmap;
+        }
+
+        np->vir_regs_2 = of_ioremap(&op->resource[3], 0,
+                                    res_size(&op->resource[3]),
+                                    "niu vregs-2");
+        if (!np->vir_regs_2) {
+                dev_err(&op->dev, PFX "Cannot map device vir registers 2, "
+                        "aborting.\n");
+                err = -ENOMEM;
+                goto err_out_iounmap;
+        }
+
+        niu_assign_netdev_ops(dev);
+
+        err = niu_get_invariants(np);
+        if (err) {
+                if (err != -ENODEV)
+                        dev_err(&op->dev, PFX "Problem fetching invariants "
+                                "of chip, aborting.\n");
+                goto err_out_iounmap;
+        }
+
+        err = register_netdev(dev);
+        if (err) {
+                dev_err(&op->dev, PFX "Cannot register net device, "
+                        "aborting.\n");
+                goto err_out_iounmap;
+        }
+
+        dev_set_drvdata(&op->dev, dev);
+
+        niu_device_announce(np);
+
+        return 0;
+
+err_out_iounmap:
+        if (np->vir_regs_1) {
+                of_iounmap(&op->resource[2], np->vir_regs_1,
+                           res_size(&op->resource[2]));
+                np->vir_regs_1 = NULL;
+        }
+
+        if (np->vir_regs_2) {
+                of_iounmap(&op->resource[3], np->vir_regs_2,
+                           res_size(&op->resource[3]));
+                np->vir_regs_2 = NULL;
+        }
+
+        if (np->regs) {
+                of_iounmap(&op->resource[1], np->regs,
+                           res_size(&op->resource[1]));
+                np->regs = NULL;
+        }
+
+err_out_release_parent:
+        niu_put_parent(np);
+
+err_out_free_dev:
+        free_netdev(dev);
+
+err_out:
+        return err;
+}
+
+static int __devexit niu_of_remove(struct of_device *op)
+{
+        struct net_device *dev = dev_get_drvdata(&op->dev);
+
+        if (dev) {
+                struct niu *np = netdev_priv(dev);
+
+                unregister_netdev(dev);
+
+                if (np->vir_regs_1) {
+                        of_iounmap(&op->resource[2], np->vir_regs_1,
+                                   res_size(&op->resource[2]));
+                        np->vir_regs_1 = NULL;
+                }
+
+                if (np->vir_regs_2) {
+                        of_iounmap(&op->resource[3], np->vir_regs_2,
+                                   res_size(&op->resource[3]));
+                        np->vir_regs_2 = NULL;
+                }
+
+                if (np->regs) {
+                        of_iounmap(&op->resource[1], np->regs,
+                                   res_size(&op->resource[1]));
+                        np->regs = NULL;
+                }
+
+                niu_ldg_free(np);
+
+                niu_put_parent(np);
+
+                free_netdev(dev);
+                dev_set_drvdata(&op->dev, NULL);
+        }
+        return 0;
+}
+
+static struct of_device_id niu_match[] = {
+        {
+                .name = "network",
+                .compatible = "SUNW,niusl",
+        },
+        {},
+};
+MODULE_DEVICE_TABLE(of, niu_match);
+
+static struct of_platform_driver niu_of_driver = {
+        .name           = "niu",
+        .match_table    = niu_match,
+        .probe          = niu_of_probe,
+        .remove         = __devexit_p(niu_of_remove),
+};
+
+#endif /* CONFIG_SPARC64 */
+
+static int __init niu_init(void)
+{
+        int err = 0;
+
+        BUILD_BUG_ON((PAGE_SIZE < 4 * 1024) ||
+                     ((PAGE_SIZE > 32 * 1024) &&
+                      ((PAGE_SIZE % (32 * 1024)) != 0 &&
+                       (PAGE_SIZE % (16 * 1024)) != 0 &&
+                       (PAGE_SIZE % (8 * 1024)) != 0 &&
+                       (PAGE_SIZE % (4 * 1024)) != 0)));
+
+        niu_debug = netif_msg_init(debug, NIU_MSG_DEFAULT);
+
+#ifdef CONFIG_SPARC64
+        err = of_register_driver(&niu_of_driver, &of_bus_type);
+#endif
+
+        if (!err) {
+                err = pci_register_driver(&niu_pci_driver);
+#ifdef CONFIG_SPARC64
+                if (err)
+                        of_unregister_driver(&niu_of_driver);
+#endif
+        }
+
+        return err;
+}
+
+static void __exit niu_exit(void)
+{
+        pci_unregister_driver(&niu_pci_driver);
+#ifdef CONFIG_SPARC64
+        of_unregister_driver(&niu_of_driver);
+#endif
+}
+
+module_init(niu_init);
+module_exit(niu_exit);