[NIU]: Add Sun Neptune ethernet driver.

With cleanup suggestions and bugs spotted by Stephen Hemminger,
Ingo Oeser, Matheos Worku, and Oliver Hartkopp.

Signed-off-by: David S. Miller <davem@davemloft.net>

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);