jme: JMicron Gigabit Ethernet Driver

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Guo-Fu Tseng
Sent: Tuesday, September 16, 2008 1:00 AM
To: Jeff Garzik
Cc: [email protected]; Ethan; akeemting
Subject: [PATCH netdev-2.6] jme: JMicron Gigabit Ethernet Driver

Dear Jeff:

Here is full patch for the JMicron Gigabit Ethernet driver. Supporting JMC250, and JMC260.

The patch is also available at:
http://cooldavid.org/download/jme.netdev-2.6.20080916.patch

Signed-off-by Guo-Fu Tseng <[email protected]>

---
diff -uprN -X ./dontdiff netdev-2.6/drivers/net/jme.c linux/drivers/net/jme.c

drivers/net/jme.c +3019 -0

@@ -0,0 +1,3019 @@
+/*
+ * JMicron JMC2x0 series PCIe Ethernet Linux Device Driver
+ *
+ * Copyright 2008 JMicron Technology Corporation
+ * http://www.jmicron.com/
+ *
+ * Author: Guo-Fu Tseng <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+#include <linux/mii.h>
+#include <linux/crc32.h>
+#include <linux/delay.h>
+#include <linux/spinlock.h>
+#include <linux/in.h>
+#include <linux/ip.h>
+#include <linux/ipv6.h>
+#include <linux/tcp.h>
+#include <linux/udp.h>
+#include <linux/if_vlan.h>
+#include "jme.h"
+
+static int force_pseudohp = -1;
+static int no_pseudohp = -1;
+static int no_extplug = -1;
+module_param(force_pseudohp, int, 0);
+MODULE_PARM_DESC(force_pseudohp,
+	"Enable pseudo hot-plug feature manually by driver instead of BIOS.");
+module_param(no_pseudohp, int, 0);
+MODULE_PARM_DESC(no_pseudohp, "Disable pseudo hot-plug feature.");
+module_param(no_extplug, int, 0);
+MODULE_PARM_DESC(no_extplug,
+	"Do not use external plug signal for pseudo hot-plug.");
+
+static int
+jme_mdio_read(struct net_device *netdev, int phy, int reg)
+{
+	struct jme_adapter *jme = netdev_priv(netdev);
+	int i, val, again = (reg == MII_BMSR) ? 1 : 0;
+
+read_again:
+	jwrite32(jme, JME_SMI, SMI_OP_REQ |
+				smi_phy_addr(phy) |
+				smi_reg_addr(reg));
+
+	wmb();
+	for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) {
+		udelay(20);
+		val = jread32(jme, JME_SMI);
+		if ((val & SMI_OP_REQ) == 0)
+			break;
+	}
+
+	if (i == 0) {
+		jeprintk(jme->pdev, "phy(%d) read timeout : %d\n", phy, reg);
+		return 0;
+	}
+
+	if (again--)
+		goto read_again;
+
+	return (val & SMI_DATA_MASK) >> SMI_DATA_SHIFT;
+}
+
+static void
+jme_mdio_write(struct net_device *netdev,
+				int phy, int reg, int val)
+{
+	struct jme_adapter *jme = netdev_priv(netdev);
+	int i;
+
+	jwrite32(jme, JME_SMI, SMI_OP_WRITE | SMI_OP_REQ |
+		((val << SMI_DATA_SHIFT) & SMI_DATA_MASK) |
+		smi_phy_addr(phy) | smi_reg_addr(reg));
+
+	wmb();
+	for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) {
+		udelay(20);
+		if ((jread32(jme, JME_SMI) & SMI_OP_REQ) == 0)
+			break;
+	}
+
+	if (i == 0)
+		jeprintk(jme->pdev, "phy(%d) write timeout : %d\n", phy, reg);
+
+	return;
+}
+
+static inline void
+jme_reset_phy_processor(struct jme_adapter *jme)
+{
+	u32 val;
+
+	jme_mdio_write(jme->dev,
+			jme->mii_if.phy_id,
+			MII_ADVERTISE, ADVERTISE_ALL |
+			ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
+
+	if (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250)
+		jme_mdio_write(jme->dev,
+				jme->mii_if.phy_id,
+				MII_CTRL1000,
+				ADVERTISE_1000FULL | ADVERTISE_1000HALF);
+
+	val = jme_mdio_read(jme->dev,
+				jme->mii_if.phy_id,
+				MII_BMCR);
+
+	jme_mdio_write(jme->dev,
+			jme->mii_if.phy_id,
+			MII_BMCR, val | BMCR_RESET);
+
+	return;
+}
+
+static void
+jme_setup_wakeup_frame(struct jme_adapter *jme,
+		u32 *mask, u32 crc, int fnr)
+{
+	int i;
+
+	/*
+	 * Setup CRC pattern
+	 */
+	jwrite32(jme, JME_WFOI, WFOI_CRC_SEL | (fnr & WFOI_FRAME_SEL));
+	wmb();
+	jwrite32(jme, JME_WFODP, crc);
+	wmb();
+
+	/*
+	 * Setup Mask
+	 */
+	for (i = 0 ; i < WAKEUP_FRAME_MASK_DWNR ; ++i) {
+		jwrite32(jme, JME_WFOI,
+				((i << WFOI_MASK_SHIFT) & WFOI_MASK_SEL) |
+				(fnr & WFOI_FRAME_SEL));
+		wmb();
+		jwrite32(jme, JME_WFODP, mask[i]);
+		wmb();
+	}
+}
+
+static inline void
+jme_reset_mac_processor(struct jme_adapter *jme)
+{
+	u32 mask[WAKEUP_FRAME_MASK_DWNR] = {0, 0, 0, 0};
+	u32 crc = 0xCDCDCDCD;
+	u32 gpreg0;
+	int i;
+
+	jwrite32(jme, JME_GHC, jme->reg_ghc | GHC_SWRST);
+	udelay(2);
+	jwrite32(jme, JME_GHC, jme->reg_ghc);
+
+	jwrite32(jme, JME_RXDBA_LO, 0x00000000);
+	jwrite32(jme, JME_RXDBA_HI, 0x00000000);
+	jwrite32(jme, JME_RXQDC, 0x00000000);
+	jwrite32(jme, JME_RXNDA, 0x00000000);
+	jwrite32(jme, JME_TXDBA_LO, 0x00000000);
+	jwrite32(jme, JME_TXDBA_HI, 0x00000000);
+	jwrite32(jme, JME_TXQDC, 0x00000000);
+	jwrite32(jme, JME_TXNDA, 0x00000000);
+
+	jwrite32(jme, JME_RXMCHT_LO, 0x00000000);
+	jwrite32(jme, JME_RXMCHT_HI, 0x00000000);
+	for (i = 0 ; i < WAKEUP_FRAME_NR ; ++i)
+		jme_setup_wakeup_frame(jme, mask, crc, i);
+	if (jme->fpgaver)
+		gpreg0 = GPREG0_DEFAULT | GPREG0_LNKINTPOLL;
+	else
+		gpreg0 = GPREG0_DEFAULT;
+	jwrite32(jme, JME_GPREG0, gpreg0);
+	jwrite32(jme, JME_GPREG1, 0);
+}
+
+static inline void
+jme_reset_ghc_speed(struct jme_adapter *jme)
+{
+	jme->reg_ghc &= ~(GHC_SPEED_1000M | GHC_DPX);
+	jwrite32(jme, JME_GHC, jme->reg_ghc);
+}
+
+static inline void
+jme_clear_pm(struct jme_adapter *jme)
+{
+	jwrite32(jme, JME_PMCS, 0xFFFF0000 | jme->reg_pmcs);
+	pci_set_power_state(jme->pdev, PCI_D0);
+	pci_enable_wake(jme->pdev, PCI_D0, false);
+}
+
+static int
+jme_reload_eeprom(struct jme_adapter *jme)
+{
+	u32 val;
+	int i;
+
+	val = jread32(jme, JME_SMBCSR);
+
+	if (val & SMBCSR_EEPROMD) {
+		val |= SMBCSR_CNACK;
+		jwrite32(jme, JME_SMBCSR, val);
+		val |= SMBCSR_RELOAD;
+		jwrite32(jme, JME_SMBCSR, val);
+		mdelay(12);
+
+		for (i = JME_EEPROM_RELOAD_TIMEOUT; i > 0; --i) {
+			mdelay(1);
+			if ((jread32(jme, JME_SMBCSR) & SMBCSR_RELOAD) == 0)
+				break;
+		}
+
+		if (i == 0) {
+			jeprintk(jme->pdev, "eeprom reload timeout\n");
+			return -EIO;
+		}
+	}
+
+	return 0;
+}
+
+static void
+jme_load_macaddr(struct net_device *netdev)
+{
+	struct jme_adapter *jme = netdev_priv(netdev);
+	unsigned char macaddr[6];
+	u32 val;
+
+	spin_lock_bh(&jme->macaddr_lock);
+	val = jread32(jme, JME_RXUMA_LO);
+	macaddr[0] = (val >>  0) & 0xFF;
+	macaddr[1] = (val >>  8) & 0xFF;
+	macaddr[2] = (val >> 16) & 0xFF;
+	macaddr[3] = (val >> 24) & 0xFF;
+	val = jread32(jme, JME_RXUMA_HI);
+	macaddr[4] = (val >>  0) & 0xFF;
+	macaddr[5] = (val >>  8) & 0xFF;
+	memcpy(netdev->dev_addr, macaddr, 6);
+	spin_unlock_bh(&jme->macaddr_lock);
+}
+
+static inline void
+jme_set_rx_pcc(struct jme_adapter *jme, int p)
+{
+	switch (p) {
+	case PCC_OFF:
+		jwrite32(jme, JME_PCCRX0,
+			((PCC_OFF_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
+			((PCC_OFF_CNT << PCCRX_SHIFT) & PCCRX_MASK));
+		break;
+	case PCC_P1:
+		jwrite32(jme, JME_PCCRX0,
+			((PCC_P1_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
+			((PCC_P1_CNT << PCCRX_SHIFT) & PCCRX_MASK));
+		break;
+	case PCC_P2:
+		jwrite32(jme, JME_PCCRX0,
+			((PCC_P2_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
+			((PCC_P2_CNT << PCCRX_SHIFT) & PCCRX_MASK));
+		break;
+	case PCC_P3:
+		jwrite32(jme, JME_PCCRX0,
+			((PCC_P3_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
+			((PCC_P3_CNT << PCCRX_SHIFT) & PCCRX_MASK));
+		break;
+	default:
+		break;
+	}
+	wmb();
+
+	if (!(test_bit(JME_FLAG_POLL, &jme->flags)))
+		msg_rx_status(jme, "Switched to PCC_P%d\n", p);
+}
+
+static void
+jme_start_irq(struct jme_adapter *jme)
+{
+	register struct dynpcc_info *dpi = &(jme->dpi);
+
+	jme_set_rx_pcc(jme, PCC_P1);
+	dpi->cur		= PCC_P1;
+	dpi->attempt		= PCC_P1;
+	dpi->cnt		= 0;
+
+	jwrite32(jme, JME_PCCTX,
+			((PCC_TX_TO << PCCTXTO_SHIFT) & PCCTXTO_MASK) |
+			((PCC_TX_CNT << PCCTX_SHIFT) & PCCTX_MASK) |
+			PCCTXQ0_EN
+		);
+
+	/*
+	 * Enable Interrupts
+	 */
+	jwrite32(jme, JME_IENS, INTR_ENABLE);
+}
+
+static inline void
+jme_stop_irq(struct jme_adapter *jme)
+{
+	/*
+	 * Disable Interrupts
+	 */
+	jwrite32f(jme, JME_IENC, INTR_ENABLE);
+}
+
+static inline void
+jme_enable_shadow(struct jme_adapter *jme)
+{
+	jwrite32(jme,
+		 JME_SHBA_LO,
+		 ((u32)jme->shadow_dma & ~((u32)0x1F)) | SHBA_POSTEN);
+}
+
+static inline void
+jme_disable_shadow(struct jme_adapter *jme)
+{
+	jwrite32(jme, JME_SHBA_LO, 0x0);
+}
+
+static u32
+jme_linkstat_from_phy(struct jme_adapter *jme)
+{
+	u32 phylink, bmsr;
+
+	phylink = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 17);
+	bmsr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMSR);
+	if (bmsr & BMSR_ANCOMP)
+		phylink |= PHY_LINK_AUTONEG_COMPLETE;
+
+	return phylink;
+}
+
+static inline void
+jme_set_phyfifoa(struct jme_adapter *jme)
+{
+	jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0004);
+}
+
+static inline void
+jme_set_phyfifob(struct jme_adapter *jme)
+{
+	jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0000);
+}
+
+static int
+jme_check_link(struct net_device *netdev, int testonly)
+{
+	struct jme_adapter *jme = netdev_priv(netdev);
+	u32 phylink, ghc, cnt = JME_SPDRSV_TIMEOUT, bmcr;
+	char linkmsg[64];
+	int rc = 0;
+
+	linkmsg[0] = '\0';
+
+	if (jme->fpgaver)
+		phylink = jme_linkstat_from_phy(jme);
+	else
+		phylink = jread32(jme, JME_PHY_LINK);
+
+	if (phylink & PHY_LINK_UP) {
+		if (!(phylink & PHY_LINK_AUTONEG_COMPLETE)) {
+			/*
+			 * If we did not enable AN
+			 * Speed/Duplex Info should be obtained from SMI
+			 */
+			phylink = PHY_LINK_UP;
+
+			bmcr = jme_mdio_read(jme->dev,
+						jme->mii_if.phy_id,
+						MII_BMCR);
+
+			phylink |= ((bmcr & BMCR_SPEED1000) &&
+					(bmcr & BMCR_SPEED100) == 0) ?
+					PHY_LINK_SPEED_1000M :
+					(bmcr & BMCR_SPEED100) ?
+					PHY_LINK_SPEED_100M :
+					PHY_LINK_SPEED_10M;
+
+			phylink |= (bmcr & BMCR_FULLDPLX) ?
+					 PHY_LINK_DUPLEX : 0;
+
+			strcat(linkmsg, "Forced: ");
+		} else {
+			/*
+			 * Keep polling for speed/duplex resolve complete
+			 */
+			while (!(phylink & PHY_LINK_SPEEDDPU_RESOLVED) &&
+				--cnt) {
+
+				udelay(1);
+
+				if (jme->fpgaver)
+					phylink = jme_linkstat_from_phy(jme);
+				else
+					phylink = jread32(jme, JME_PHY_LINK);
+			}
+			if (!cnt)
+				jeprintk(jme->pdev,
+					"Waiting speed resolve timeout.\n");
+
+			strcat(linkmsg, "ANed: ");
+		}
+
+		if (jme->phylink == phylink) {
+			rc = 1;
+			goto out;
+		}
+		if (testonly)
+			goto out;
+
+		jme->phylink = phylink;
+
+		ghc = jme->reg_ghc & ~(GHC_SPEED_10M |
+					GHC_SPEED_100M |
+					GHC_SPEED_1000M |
+					GHC_DPX);
+		switch (phylink & PHY_LINK_SPEED_MASK) {
+		case PHY_LINK_SPEED_10M:
+			ghc |= GHC_SPEED_10M;
+			strcat(linkmsg, "10 Mbps, ");
+			if (is_buggy250(jme->pdev->device, jme->chiprev))
+				jme_set_phyfifoa(jme);
+			break;
+		case PHY_LINK_SPEED_100M:
+			ghc |= GHC_SPEED_100M;
+			strcat(linkmsg, "100 Mbps, ");
+			if (is_buggy250(jme->pdev->device, jme->chiprev))
+				jme_set_phyfifob(jme);
+			break;
+		case PHY_LINK_SPEED_1000M:
+			ghc |= GHC_SPEED_1000M;
+			strcat(linkmsg, "1000 Mbps, ");
+			if (is_buggy250(jme->pdev->device, jme->chiprev))
+				jme_set_phyfifoa(jme);
+			break;
+		default:
+			break;
+		}
+		ghc |= (phylink & PHY_LINK_DUPLEX) ? GHC_DPX : 0;
+
+		strcat(linkmsg, (phylink & PHY_LINK_DUPLEX) ?
+					"Full-Duplex, " :
+					"Half-Duplex, ");
+
+		if (phylink & PHY_LINK_MDI_STAT)
+			strcat(linkmsg, "MDI-X");
+		else
+			strcat(linkmsg, "MDI");
+
+		if (phylink & PHY_LINK_DUPLEX) {
+			jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT);
+		} else {
+			jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT |
+						TXMCS_BACKOFF |
+						TXMCS_CARRIERSENSE |
+						TXMCS_COLLISION);
+			jwrite32(jme, JME_TXTRHD, TXTRHD_TXPEN |
+				((0x2000 << TXTRHD_TXP_SHIFT) & TXTRHD_TXP) |
+				TXTRHD_TXREN |
+				((8 << TXTRHD_TXRL_SHIFT) & TXTRHD_TXRL));
+		}
+
+		jme->reg_ghc = ghc;
+		jwrite32(jme, JME_GHC, ghc);
+
+		msg_link(jme, "Link is up at %s.\n", linkmsg);
+		netif_carrier_on(netdev);
+	} else {
+		if (testonly)
+			goto out;
+
+		msg_link(jme, "Link is down.\n");
+		jme->phylink = 0;
+		netif_carrier_off(netdev);
+	}
+
+out:
+	return rc;
+}
+
+static int
+jme_setup_tx_resources(struct jme_adapter *jme)
+{
+	struct jme_ring *txring = &(jme->txring[0]);
+
+	txring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
+				   TX_RING_ALLOC_SIZE(jme->tx_ring_size),
+				   &(txring->dmaalloc),
+				   GFP_ATOMIC);
+
+	if (!txring->alloc) {
+		txring->desc = NULL;
+		txring->dmaalloc = 0;
+		txring->dma = 0;
+		return -ENOMEM;
+	}
+
+	/*
+	 * 16 Bytes align
+	 */
+	txring->desc		= (void *)ALIGN((unsigned long)(txring->alloc),
+						RING_DESC_ALIGN);
+	txring->dma		= ALIGN(txring->dmaalloc, RING_DESC_ALIGN);
+	txring->next_to_use	= 0;
+	atomic_set(&txring->next_to_clean, 0);
+	atomic_set(&txring->nr_free, jme->tx_ring_size);
+
+	/*
+	 * Initialize Transmit Descriptors
+	 */
+	memset(txring->alloc, 0, TX_RING_ALLOC_SIZE(jme->tx_ring_size));
+	memset(txring->bufinf, 0,
+		sizeof(struct jme_buffer_info) * jme->tx_ring_size);
+
+	return 0;
+}
+
+static void
+jme_free_tx_resources(struct jme_adapter *jme)
+{
+	int i;
+	struct jme_ring *txring = &(jme->txring[0]);
+	struct jme_buffer_info *txbi = txring->bufinf;
+
+	if (txring->alloc) {
+		for (i = 0 ; i < jme->tx_ring_size ; ++i) {
+			txbi = txring->bufinf + i;
+			if (txbi->skb) {
+				dev_kfree_skb(txbi->skb);
+				txbi->skb = NULL;
+			}
+			txbi->mapping		= 0;
+			txbi->len		= 0;
+			txbi->nr_desc		= 0;
+			txbi->start_xmit	= 0;
+		}
+
+		dma_free_coherent(&(jme->pdev->dev),
+				  TX_RING_ALLOC_SIZE(jme->tx_ring_size),
+				  txring->alloc,
+				  txring->dmaalloc);
+
+		txring->alloc		= NULL;
+		txring->desc		= NULL;
+		txring->dmaalloc	= 0;
+		txring->dma		= 0;
+	}
+	txring->next_to_use	= 0;
+	atomic_set(&txring->next_to_clean, 0);
+	atomic_set(&txring->nr_free, 0);
+
+}
+
+static inline void
+jme_enable_tx_engine(struct jme_adapter *jme)
+{
+	/*
+	 * Select Queue 0
+	 */
+	jwrite32(jme, JME_TXCS, TXCS_DEFAULT | TXCS_SELECT_QUEUE0);
+	wmb();
+
+	/*
+	 * Setup TX Queue 0 DMA Bass Address
+	 */
+	jwrite32(jme, JME_TXDBA_LO, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL);
+	jwrite32(jme, JME_TXDBA_HI, (__u64)(jme->txring[0].dma) >> 32);
+	jwrite32(jme, JME_TXNDA, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL);
+
+	/*
+	 * Setup TX Descptor Count
+	 */
+	jwrite32(jme, JME_TXQDC, jme->tx_ring_size);
+
+	/*
+	 * Enable TX Engine
+	 */
+	wmb();
+	jwrite32(jme, JME_TXCS, jme->reg_txcs |
+				TXCS_SELECT_QUEUE0 |
+				TXCS_ENABLE);
+
+}
+
+static inline void
+jme_restart_tx_engine(struct jme_adapter *jme)
+{
+	/*
+	 * Restart TX Engine
+	 */
+	jwrite32(jme, JME_TXCS, jme->reg_txcs |
+				TXCS_SELECT_QUEUE0 |
+				TXCS_ENABLE);
+}
+
+static inline void
+jme_disable_tx_engine(struct jme_adapter *jme)
+{
+	int i;
+	u32 val;
+
+	/*
+	 * Disable TX Engine
+	 */
+	jwrite32(jme, JME_TXCS, jme->reg_txcs | TXCS_SELECT_QUEUE0);
+	wmb();
+
+	val = jread32(jme, JME_TXCS);
+	for (i = JME_TX_DISABLE_TIMEOUT ; (val & TXCS_ENABLE) && i > 0 ; --i) {
+		mdelay(1);
+		val = jread32(jme, JME_TXCS);
+		rmb();
+	}
+
+	if (!i)
+		jeprintk(jme->pdev, "Disable TX engine timeout.\n");
+}
+
+static void
+jme_set_clean_rxdesc(struct jme_adapter *jme, int i)
+{
+	struct jme_ring *rxring = jme->rxring;
+	register struct rxdesc *rxdesc = rxring->desc;
+	struct jme_buffer_info *rxbi = rxring->bufinf;
+	rxdesc += i;
+	rxbi += i;
+
+	rxdesc->dw[0] = 0;
+	rxdesc->dw[1] = 0;
+	rxdesc->desc1.bufaddrh	= cpu_to_le32((__u64)rxbi->mapping >> 32);
+	rxdesc->desc1.bufaddrl	= cpu_to_le32(
+					(__u64)rxbi->mapping & 0xFFFFFFFFUL);
+	rxdesc->desc1.datalen	= cpu_to_le16(rxbi->len);
+	if (jme->dev->features & NETIF_F_HIGHDMA)
+		rxdesc->desc1.flags = RXFLAG_64BIT;
+	wmb();
+	rxdesc->desc1.flags	|= RXFLAG_OWN | RXFLAG_INT;
+}
+
+static int
+jme_make_new_rx_buf(struct jme_adapter *jme, int i)
+{
+	struct jme_ring *rxring = &(jme->rxring[0]);
+	struct jme_buffer_info *rxbi = rxring->bufinf + i;
+	struct sk_buff *skb;
+
+	skb = netdev_alloc_skb(jme->dev,
+		jme->dev->mtu + RX_EXTRA_LEN);
+	if (unlikely(!skb))
+		return -ENOMEM;
+
+	rxbi->skb = skb;
+	rxbi->len = skb_tailroom(skb);
+	rxbi->mapping = pci_map_page(jme->pdev,
+					virt_to_page(skb->data),
+					offset_in_page(skb->data),
+					rxbi->len,
+					PCI_DMA_FROMDEVICE);
+
+	return 0;
+}
+
+static void
+jme_free_rx_buf(struct jme_adapter *jme, int i)
+{
+	struct jme_ring *rxring = &(jme->rxring[0]);
+	struct jme_buffer_info *rxbi = rxring->bufinf;
+	rxbi += i;
+
+	if (rxbi->skb) {
+		pci_unmap_page(jme->pdev,
+				 rxbi->mapping,
+				 rxbi->len,
+				 PCI_DMA_FROMDEVICE);
+		dev_kfree_skb(rxbi->skb);
+		rxbi->skb = NULL;
+		rxbi->mapping = 0;
+		rxbi->len = 0;
+	}
+}
+
+static void
+jme_free_rx_resources(struct jme_adapter *jme)
+{
+	int i;
+	struct jme_ring *rxring = &(jme->rxring[0]);
+
+	if (rxring->alloc) {
+		for (i = 0 ; i < jme->rx_ring_size ; ++i)
+			jme_free_rx_buf(jme, i);
+
+		dma_free_coherent(&(jme->pdev->dev),
+				  RX_RING_ALLOC_SIZE(jme->rx_ring_size),
+				  rxring->alloc,
+				  rxring->dmaalloc);
+		rxring->alloc    = NULL;
+		rxring->desc     = NULL;
+		rxring->dmaalloc = 0;
+		rxring->dma      = 0;
+	}
+	rxring->next_to_use   = 0;
+	atomic_set(&rxring->next_to_clean, 0);
+}
+
+static int
+jme_setup_rx_resources(struct jme_adapter *jme)
+{
+	int i;
+	struct jme_ring *rxring = &(jme->rxring[0]);
+
+	rxring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
+				   RX_RING_ALLOC_SIZE(jme->rx_ring_size),
+				   &(rxring->dmaalloc),
+				   GFP_ATOMIC);
+	if (!rxring->alloc) {
+		rxring->desc = NULL;
+		rxring->dmaalloc = 0;
+		rxring->dma = 0;
+		return -ENOMEM;
+	}
+
+	/*
+	 * 16 Bytes align
+	 */
+	rxring->desc		= (void *)ALIGN((unsigned long)(rxring->alloc),
+						RING_DESC_ALIGN);
+	rxring->dma		= ALIGN(rxring->dmaalloc, RING_DESC_ALIGN);
+	rxring->next_to_use	= 0;
+	atomic_set(&rxring->next_to_clean, 0);
+
+	/*
+	 * Initiallize Receive Descriptors
+	 */
+	for (i = 0 ; i < jme->rx_ring_size ; ++i) {
+		if (unlikely(jme_make_new_rx_buf(jme, i))) {
+			jme_free_rx_resources(jme);
+			return -ENOMEM;
+		}
+
+		jme_set_clean_rxdesc(jme, i);
+	}
+
+	return 0;
+}
+
+static inline void
+jme_enable_rx_engine(struct jme_adapter *jme)
+{
+	/*
+	 * Select Queue 0
+	 */
+	jwrite32(jme, JME_RXCS, jme->reg_rxcs |
+				RXCS_QUEUESEL_Q0);
+	wmb();
+
+	/*
+	 * Setup RX DMA Bass Address
+	 */
+	jwrite32(jme, JME_RXDBA_LO, (__u64)jme->rxring[0].dma & 0xFFFFFFFFUL);
+	jwrite32(jme, JME_RXDBA_HI, (__u64)(jme->rxring[0].dma) >> 32);
+	jwrite32(jme, JME_RXNDA, (__u64)jme->rxring[0].dma & 0xFFFFFFFFUL);
+
+	/*
+	 * Setup RX Descriptor Count
+	 */
+	jwrite32(jme, JME_RXQDC, jme->rx_ring_size);
+
+	/*
+	 * Setup Unicast Filter
+	 */
+	jme_set_multi(jme->dev);
+
+	/*
+	 * Enable RX Engine
+	 */
+	wmb();
+	jwrite32(jme, JME_RXCS, jme->reg_rxcs |
+				RXCS_QUEUESEL_Q0 |
+				RXCS_ENABLE |
+				RXCS_QST);
+}
+
+static inline void
+jme_restart_rx_engine(struct jme_adapter *jme)
+{
+	/*
+	 * Start RX Engine
+	 */
+	jwrite32(jme, JME_RXCS, jme->reg_rxcs |
+				RXCS_QUEUESEL_Q0 |
+				RXCS_ENABLE |
+				RXCS_QST);
+}
+
+static inline void
+jme_disable_rx_engine(struct jme_adapter *jme)
+{
+	int i;
+	u32 val;
+
+	/*
+	 * Disable RX Engine
+	 */
+	jwrite32(jme, JME_RXCS, jme->reg_rxcs);
+	wmb();
+
+	val = jread32(jme, JME_RXCS);
+	for (i = JME_RX_DISABLE_TIMEOUT ; (val & RXCS_ENABLE) && i > 0 ; --i) {
+		mdelay(1);
+		val = jread32(jme, JME_RXCS);
+		rmb();
+	}
+
+	if (!i)
+		jeprintk(jme->pdev, "Disable RX engine timeout.\n");
+
+}
+
+static int
+jme_rxsum_ok(struct jme_adapter *jme, u16 flags)
+{
+	if (!(flags & (RXWBFLAG_TCPON | RXWBFLAG_UDPON | RXWBFLAG_IPV4)))
+		return false;
+
+	if (unlikely(!(flags & RXWBFLAG_MF) &&
+	(flags & RXWBFLAG_TCPON) && !(flags & RXWBFLAG_TCPCS))) {
+		msg_rx_err(jme, "TCP Checksum error.\n");
+		goto out_sumerr;
+	}
+
+	if (unlikely(!(flags & RXWBFLAG_MF) &&
+	(flags & RXWBFLAG_UDPON) && !(flags & RXWBFLAG_UDPCS))) {
+		msg_rx_err(jme, "UDP Checksum error.\n");
+		goto out_sumerr;
+	}
+
+	if (unlikely((flags & RXWBFLAG_IPV4) && !(flags & RXWBFLAG_IPCS))) {
+		msg_rx_err(jme, "IPv4 Checksum error.\n");
+		goto out_sumerr;
+	}
+
+	return true;
+
+out_sumerr:
+	return false;
+}
+
+static void
+jme_alloc_and_feed_skb(struct jme_adapter *jme, int idx)
+{
+	struct jme_ring *rxring = &(jme->rxring[0]);
+	struct rxdesc *rxdesc = rxring->desc;
+	struct jme_buffer_info *rxbi = rxring->bufinf;
+	struct sk_buff *skb;
+	int framesize;
+
+	rxdesc += idx;
+	rxbi += idx;
+
+	skb = rxbi->skb;
+	pci_dma_sync_single_for_cpu(jme->pdev,
+					rxbi->mapping,
+					rxbi->len,
+					PCI_DMA_FROMDEVICE);
+
+	if (unlikely(jme_make_new_rx_buf(jme, idx))) {
+		pci_dma_sync_single_for_device(jme->pdev,
+						rxbi->mapping,
+						rxbi->len,
+						PCI_DMA_FROMDEVICE);
+
+		++(NET_STAT(jme).rx_dropped);
+	} else {
+		framesize = le16_to_cpu(rxdesc->descwb.framesize)
+				- RX_PREPAD_SIZE;
+
+		skb_reserve(skb, RX_PREPAD_SIZE);
+		skb_put(skb, framesize);
+		skb->protocol = eth_type_trans(skb, jme->dev);
+
+		if (jme_rxsum_ok(jme, rxdesc->descwb.flags))
+			skb->ip_summed = CHECKSUM_UNNECESSARY;
+		else
+			skb->ip_summed = CHECKSUM_NONE;
+
+		if (rxdesc->descwb.flags & RXWBFLAG_TAGON) {
+			if (jme->vlgrp) {
+				jme->jme_vlan_rx(skb, jme->vlgrp,
+					le32_to_cpu(rxdesc->descwb.vlan));
+				NET_STAT(jme).rx_bytes += 4;
+			}
+		} else {
+			jme->jme_rx(skb);
+		}
+
+		if ((le16_to_cpu(rxdesc->descwb.flags) & RXWBFLAG_DEST) ==
+				RXWBFLAG_DEST_MUL)
+			++(NET_STAT(jme).multicast);
+
+		jme->dev->last_rx = jiffies;
+		NET_STAT(jme).rx_bytes += framesize;
+		++(NET_STAT(jme).rx_packets);
+	}
+
+	jme_set_clean_rxdesc(jme, idx);
+
+}
+
+static int
+jme_process_receive(struct jme_adapter *jme, int limit)
+{
+	struct jme_ring *rxring = &(jme->rxring[0]);
+	struct rxdesc *rxdesc = rxring->desc;
+	int i, j, ccnt, desccnt, mask = jme->rx_ring_mask;
+
+	if (unlikely(!atomic_dec_and_test(&jme->rx_cleaning)))
+		goto out_inc;
+
+	if (unlikely(atomic_read(&jme->link_changing) != 1))
+		goto out_inc;
+
+	if (unlikely(!netif_carrier_ok(jme->dev)))
+		goto out_inc;
+
+	i = atomic_read(&rxring->next_to_clean);
+	while (limit-- > 0) {
+		rxdesc = rxring->desc;
+		rxdesc += i;
+
+		if ((rxdesc->descwb.flags & RXWBFLAG_OWN) ||
+		!(rxdesc->descwb.desccnt & RXWBDCNT_WBCPL))
+			goto out;
+
+		desccnt = rxdesc->descwb.desccnt & RXWBDCNT_DCNT;
+
+		if (unlikely(desccnt > 1 ||
+		rxdesc->descwb.errstat & RXWBERR_ALLERR)) {
+
+			if (rxdesc->descwb.errstat & RXWBERR_CRCERR)
+				++(NET_STAT(jme).rx_crc_errors);
+			else if (rxdesc->descwb.errstat & RXWBERR_OVERUN)
+				++(NET_STAT(jme).rx_fifo_errors);
+			else
+				++(NET_STAT(jme).rx_errors);
+
+			if (desccnt > 1)
+				limit -= desccnt - 1;
+
+			for (j = i, ccnt = desccnt ; ccnt-- ; ) {
+				jme_set_clean_rxdesc(jme, j);
+				j = (j + 1) & (mask);
+			}
+
+		} else {
+			jme_alloc_and_feed_skb(jme, i);
+		}
+
+		i = (i + desccnt) & (mask);
+	}
+
+out:
+	atomic_set(&rxring->next_to_clean, i);
+
+out_inc:
+	atomic_inc(&jme->rx_cleaning);
+
+	return limit > 0 ? limit : 0;
+
+}
+
+static void
+jme_attempt_pcc(struct dynpcc_info *dpi, int atmp)
+{
+	if (likely(atmp == dpi->cur)) {
+		dpi->cnt = 0;
+		return;
+	}
+
+	if (dpi->attempt == atmp) {
+		++(dpi->cnt);
+	} else {
+		dpi->attempt = atmp;
+		dpi->cnt = 0;
+	}
+
+}
+
+static void
+jme_dynamic_pcc(struct jme_adapter *jme)
+{
+	register struct dynpcc_info *dpi = &(jme->dpi);
+
+	if ((NET_STAT(jme).rx_bytes - dpi->last_bytes) > PCC_P3_THRESHOLD)
+		jme_attempt_pcc(dpi, PCC_P3);
+	else if ((NET_STAT(jme).rx_packets - dpi->last_pkts) > PCC_P2_THRESHOLD
+	|| dpi->intr_cnt > PCC_INTR_THRESHOLD)
+		jme_attempt_pcc(dpi, PCC_P2);
+	else
+		jme_attempt_pcc(dpi, PCC_P1);
+
+	if (unlikely(dpi->attempt != dpi->cur && dpi->cnt > 5)) {
+		if (dpi->attempt < dpi->cur)
+			tasklet_schedule(&jme->rxclean_task);
+		jme_set_rx_pcc(jme, dpi->attempt);
+		dpi->cur = dpi->attempt;
+		dpi->cnt = 0;
+	}
+}
+
+static void
+jme_start_pcc_timer(struct jme_adapter *jme)
+{
+	struct dynpcc_info *dpi = &(jme->dpi);
+	dpi->last_bytes		= NET_STAT(jme).rx_bytes;
+	dpi->last_pkts		= NET_STAT(jme).rx_packets;
+	dpi->intr_cnt		= 0;
+	jwrite32(jme, JME_TMCSR,
+		TMCSR_EN | ((0xFFFFFF - PCC_INTERVAL_US) & TMCSR_CNT));
+}
+
+static inline void
+jme_stop_pcc_timer(struct jme_adapter *jme)
+{
+	jwrite32(jme, JME_TMCSR, 0);
+}
+
+static void
+jme_shutdown_nic(struct jme_adapter *jme)
+{
+	u32 phylink;
+
+	phylink = jme_linkstat_from_phy(jme);
+
+	if (!(phylink & PHY_LINK_UP)) {
+		/*
+		 * Disable all interrupt before issue timer
+		 */
+		jme_stop_irq(jme);
+		jwrite32(jme, JME_TIMER2, TMCSR_EN | 0xFFFFFE);
+	}
+}
+
+static void
+jme_pcc_tasklet(unsigned long arg)
+{
+	struct jme_adapter *jme = (struct jme_adapter *)arg;
+	struct net_device *netdev = jme->dev;
+
+	if (unlikely(test_bit(JME_FLAG_SHUTDOWN, &jme->flags))) {
+		jme_shutdown_nic(jme);
+		return;
+	}
+
+	if (unlikely(!netif_carrier_ok(netdev) ||
+		(atomic_read(&jme->link_changing) != 1)
+	)) {
+		jme_stop_pcc_timer(jme);
+		return;
+	}
+
+	if (!(test_bit(JME_FLAG_POLL, &jme->flags)))
+		jme_dynamic_pcc(jme);
+
+	jme_start_pcc_timer(jme);
+}
+
+static inline void
+jme_polling_mode(struct jme_adapter *jme)
+{
+	jme_set_rx_pcc(jme, PCC_OFF);
+}
+
+static inline void
+jme_interrupt_mode(struct jme_adapter *jme)
+{
+	jme_set_rx_pcc(jme, PCC_P1);
+}
+
+static inline int
+jme_pseudo_hotplug_enabled(struct jme_adapter *jme)
+{
+	u32 apmc;
+	apmc = jread32(jme, JME_APMC);
+	return apmc & JME_APMC_PSEUDO_HP_EN;
+}
+
+static void
+jme_start_shutdown_timer(struct jme_adapter *jme)
+{
+	u32 apmc;
+
+	apmc = jread32(jme, JME_APMC) | JME_APMC_PCIE_SD_EN;
+	apmc &= ~JME_APMC_EPIEN_CTRL;
+	if (!no_extplug) {
+		jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_EN);
+		wmb();
+	}
+	jwrite32f(jme, JME_APMC, apmc);
+
+	jwrite32f(jme, JME_TIMER2, 0);
+	set_bit(JME_FLAG_SHUTDOWN, &jme->flags);
+	jwrite32(jme, JME_TMCSR,
+		TMCSR_EN | ((0xFFFFFF - APMC_PHP_SHUTDOWN_DELAY) & TMCSR_CNT));
+}
+
+static void
+jme_stop_shutdown_timer(struct jme_adapter *jme)
+{
+	u32 apmc;
+
+	jwrite32f(jme, JME_TMCSR, 0);
+	jwrite32f(jme, JME_TIMER2, 0);
+	clear_bit(JME_FLAG_SHUTDOWN, &jme->flags);
+
+	apmc = jread32(jme, JME_APMC);
+	apmc &= ~(JME_APMC_PCIE_SD_EN | JME_APMC_EPIEN_CTRL);
+	jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_DIS);
+	wmb();
+	jwrite32f(jme, JME_APMC, apmc);
+}
+
+static void
+jme_link_change_tasklet(unsigned long arg)
+{
+	struct jme_adapter *jme = (struct jme_adapter *)arg;
+	struct net_device *netdev = jme->dev;
+	int rc;
+
+	while (!atomic_dec_and_test(&jme->link_changing)) {
+		atomic_inc(&jme->link_changing);
+		msg_intr(jme, "Get link change lock failed.\n");
+		while (atomic_read(&jme->link_changing) != 1)
+			msg_intr(jme, "Waiting link change lock.\n");
+	}
+
+	if (jme_check_link(netdev, 1) && jme->old_mtu == netdev->mtu)
+		goto out;
+
+	jme->old_mtu = netdev->mtu;
+	netif_stop_queue(netdev);
+	if (jme_pseudo_hotplug_enabled(jme))
+		jme_stop_shutdown_timer(jme);
+
+	jme_stop_pcc_timer(jme);
+	tasklet_disable(&jme->txclean_task);
+	tasklet_disable(&jme->rxclean_task);
+	tasklet_disable(&jme->rxempty_task);
+
+	if (netif_carrier_ok(netdev)) {
+		jme_reset_ghc_speed(jme);
+		jme_disable_rx_engine(jme);
+		jme_disable_tx_engine(jme);
+		jme_reset_mac_processor(jme);
+		jme_free_rx_resources(jme);
+		jme_free_tx_resources(jme);
+
+		if (test_bit(JME_FLAG_POLL, &jme->flags))
+			jme_polling_mode(jme);
+
+		netif_carrier_off(netdev);
+	}
+
+	jme_check_link(netdev, 0);
+	if (netif_carrier_ok(netdev)) {
+		rc = jme_setup_rx_resources(jme);
+		if (rc) {
+			jeprintk(jme->pdev, "Allocating resources for RX error"
+				", Device STOPPED!\n");
+			goto out_enable_tasklet;
+		}
+
+		rc = jme_setup_tx_resources(jme);
+		if (rc) {
+			jeprintk(jme->pdev, "Allocating resources for TX error"
+				", Device STOPPED!\n");
+			goto err_out_free_rx_resources;
+		}
+
+		jme_enable_rx_engine(jme);
+		jme_enable_tx_engine(jme);
+
+		netif_start_queue(netdev);
+
+		if (test_bit(JME_FLAG_POLL, &jme->flags))
+			jme_interrupt_mode(jme);
+
+		jme_start_pcc_timer(jme);
+	} else if (jme_pseudo_hotplug_enabled(jme)) {
+		jme_start_shutdown_timer(jme);
+	}
+
+	goto out_enable_tasklet;
+
+err_out_free_rx_resources:
+	jme_free_rx_resources(jme);
+out_enable_tasklet:
+	tasklet_enable(&jme->txclean_task);
+	tasklet_hi_enable(&jme->rxclean_task);
+	tasklet_hi_enable(&jme->rxempty_task);
+out:
+	atomic_inc(&jme->link_changing);
+}
+
+static void
+jme_rx_clean_tasklet(unsigned long arg)
+{
+	struct jme_adapter *jme = (struct jme_adapter *)arg;
+	struct dynpcc_info *dpi = &(jme->dpi);
+
+	jme_process_receive(jme, jme->rx_ring_size);
+	++(dpi->intr_cnt);
+
+}
+
+static int
+jme_poll(JME_NAPI_HOLDER(holder), JME_NAPI_WEIGHT(budget))
+{
+	struct jme_adapter *jme = jme_napi_priv(holder);
+	struct net_device *netdev = jme->dev;
+	int rest;
+
+	rest = jme_process_receive(jme, JME_NAPI_WEIGHT_VAL(budget));
+
+	while (atomic_read(&jme->rx_empty) > 0) {
+		atomic_dec(&jme->rx_empty);
+		++(NET_STAT(jme).rx_dropped);
+		jme_restart_rx_engine(jme);
+	}
+	atomic_inc(&jme->rx_empty);
+
+	if (rest) {
+		JME_RX_COMPLETE(netdev, holder);
+		jme_interrupt_mode(jme);
+	}
+
+	JME_NAPI_WEIGHT_SET(budget, rest);
+	return JME_NAPI_WEIGHT_VAL(budget) - rest;
+}
+
+static void
+jme_rx_empty_tasklet(unsigned long arg)
+{
+	struct jme_adapter *jme = (struct jme_adapter *)arg;
+
+	if (unlikely(atomic_read(&jme->link_changing) != 1))
+		return;
+
+	if (unlikely(!netif_carrier_ok(jme->dev)))
+		return;
+
+	msg_rx_status(jme, "RX Queue Full!\n");
+
+	jme_rx_clean_tasklet(arg);
+
+	while (atomic_read(&jme->rx_empty) > 0) {
+		atomic_dec(&jme->rx_empty);
+		++(NET_STAT(jme).rx_dropped);
+		jme_restart_rx_engine(jme);
+	}
+	atomic_inc(&jme->rx_empty);
+}
+
+static void
+jme_wake_queue_if_stopped(struct jme_adapter *jme)
+{
+	struct jme_ring *txring = jme->txring;
+
+	smp_wmb();
+	if (unlikely(netif_queue_stopped(jme->dev) &&
+	atomic_read(&txring->nr_free) >= (jme->tx_wake_threshold))) {
+		msg_tx_done(jme, "TX Queue Waked.\n");
+		netif_wake_queue(jme->dev);
+	}
+
+}
+
+static void
+jme_tx_clean_tasklet(unsigned long arg)
+{
+	struct jme_adapter *jme = (struct jme_adapter *)arg;
+	struct jme_ring *txring = &(jme->txring[0]);
+	struct txdesc *txdesc = txring->desc;
+	struct jme_buffer_info *txbi = txring->bufinf, *ctxbi, *ttxbi;
+	int i, j, cnt = 0, max, err, mask;
+
+	tx_dbg(jme, "Into txclean.\n");
+
+	if (unlikely(!atomic_dec_and_test(&jme->tx_cleaning)))
+		goto out;
+
+	if (unlikely(atomic_read(&jme->link_changing) != 1))
+		goto out;
+
+	if (unlikely(!netif_carrier_ok(jme->dev)))
+		goto out;
+
+	max = jme->tx_ring_size - atomic_read(&txring->nr_free);
+	mask = jme->tx_ring_mask;
+
+	for (i = atomic_read(&txring->next_to_clean) ; cnt < max ; ) {
+
+		ctxbi = txbi + i;
+
+		if (likely(ctxbi->skb &&
+		!(txdesc[i].descwb.flags & TXWBFLAG_OWN))) {
+
+			tx_dbg(jme, "txclean: %d+%d@%lu\n",
+					i, ctxbi->nr_desc, jiffies);
+
+			err = txdesc[i].descwb.flags & TXWBFLAG_ALLERR;
+
+			for (j = 1 ; j < ctxbi->nr_desc ; ++j) {
+				ttxbi = txbi + ((i + j) & (mask));
+				txdesc[(i + j) & (mask)].dw[0] = 0;
+
+				pci_unmap_page(jme->pdev,
+						 ttxbi->mapping,
+						 ttxbi->len,
+						 PCI_DMA_TODEVICE);
+
+				ttxbi->mapping = 0;
+				ttxbi->len = 0;
+			}
+
+			dev_kfree_skb(ctxbi->skb);
+
+			cnt += ctxbi->nr_desc;
+
+			if (unlikely(err)) {
+				++(NET_STAT(jme).tx_carrier_errors);
+			} else {
+				++(NET_STAT(jme).tx_packets);
+				NET_STAT(jme).tx_bytes += ctxbi->len;
+			}
+
+			ctxbi->skb = NULL;
+			ctxbi->len = 0;
+			ctxbi->start_xmit = 0;
+
+		} else {
+			break;
+		}
+
+		i = (i + ctxbi->nr_desc) & mask;
+
+		ctxbi->nr_desc = 0;
+	}
+
+	tx_dbg(jme, "txclean: done %d@%lu.\n", i, jiffies);
+	atomic_set(&txring->next_to_clean, i);
+	atomic_add(cnt, &txring->nr_free);
+
+	jme_wake_queue_if_stopped(jme);
+
+out:
+	atomic_inc(&jme->tx_cleaning);
+}
+
+static void
+jme_intr_msi(struct jme_adapter *jme, u32 intrstat)
+{
+	/*
+	 * Disable interrupt
+	 */
+	jwrite32f(jme, JME_IENC, INTR_ENABLE);
+
+	if (intrstat & (INTR_LINKCH | INTR_SWINTR)) {
+		/*
+		 * Link change event is critical
+		 * all other events are ignored
+		 */
+		jwrite32(jme, JME_IEVE, intrstat);
+		tasklet_schedule(&jme->linkch_task);
+		goto out_reenable;
+	}
+
+	if (intrstat & INTR_TMINTR) {
+		jwrite32(jme, JME_IEVE, INTR_TMINTR);
+		tasklet_schedule(&jme->pcc_task);
+	}
+
+	if (intrstat & (INTR_PCCTXTO | INTR_PCCTX)) {
+		jwrite32(jme, JME_IEVE, INTR_PCCTXTO | INTR_PCCTX | INTR_TX0);
+		tasklet_schedule(&jme->txclean_task);
+	}
+
+	if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
+		jwrite32(jme, JME_IEVE, (intrstat & (INTR_PCCRX0TO |
+						     INTR_PCCRX0 |
+						     INTR_RX0EMP)) |
+					INTR_RX0);
+	}
+
+	if (test_bit(JME_FLAG_POLL, &jme->flags)) {
+		if (intrstat & INTR_RX0EMP)
+			atomic_inc(&jme->rx_empty);
+
+		if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
+			if (likely(JME_RX_SCHEDULE_PREP(jme))) {
+				jme_polling_mode(jme);
+				JME_RX_SCHEDULE(jme);
+			}
+		}
+	} else {
+		if (intrstat & INTR_RX0EMP) {
+			atomic_inc(&jme->rx_empty);
+			tasklet_hi_schedule(&jme->rxempty_task);
+		} else if (intrstat & (INTR_PCCRX0TO | INTR_PCCRX0)) {
+			tasklet_hi_schedule(&jme->rxclean_task);
+		}
+	}
+
+out_reenable:
+	/*
+	 * Re-enable interrupt
+	 */
+	jwrite32f(jme, JME_IENS, INTR_ENABLE);
+}
+
+static irqreturn_t
+jme_intr(int irq, void *dev_id)
+{
+	struct net_device *netdev = dev_id;
+	struct jme_adapter *jme = netdev_priv(netdev);
+	u32 intrstat;
+
+	intrstat = jread32(jme, JME_IEVE);
+
+	/*
+	 * Check if it's really an interrupt for us
+	 */
+	if (unlikely(intrstat == 0))
+		return IRQ_NONE;
+
+	/*
+	 * Check if the device still exist
+	 */
+	if (unlikely(intrstat == ~((typeof(intrstat))0)))
+		return IRQ_NONE;
+
+	jme_intr_msi(jme, intrstat);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t
+jme_msi(int irq, void *dev_id)
+{
+	struct net_device *netdev = dev_id;
+	struct jme_adapter *jme = netdev_priv(netdev);
+	u32 intrstat;
+
+	pci_dma_sync_single_for_cpu(jme->pdev,
+				    jme->shadow_dma,
+				    sizeof(u32) * SHADOW_REG_NR,
+				    PCI_DMA_FROMDEVICE);
+	intrstat = jme->shadow_regs[SHADOW_IEVE];
+	jme->shadow_regs[SHADOW_IEVE] = 0;
+
+	jme_intr_msi(jme, intrstat);
+
+	return IRQ_HANDLED;
+}
+
+static void
+jme_reset_link(struct jme_adapter *jme)
+{
+	jwrite32(jme, JME_TMCSR, TMCSR_SWIT);
+}
+
+static void
+jme_restart_an(struct jme_adapter *jme)
+{
+	u32 bmcr;
+
+	spin_lock_bh(&jme->phy_lock);
+	bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
+	bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
+	jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
+	spin_unlock_bh(&jme->phy_lock);
+}
+
+static int
+jme_request_irq(struct jme_adapter *jme)
+{
+	int rc;
+	struct net_device *netdev = jme->dev;
+	irq_handler_t handler = jme_intr;
+	int irq_flags = IRQF_SHARED;
+
+	if (!pci_enable_msi(jme->pdev)) {
+		set_bit(JME_FLAG_MSI, &jme->flags);
+		handler = jme_msi;
+		irq_flags = 0;
+	}
+
+	rc = request_irq(jme->pdev->irq, handler, irq_flags, netdev->name,
+			  netdev);
+	if (rc) {
+		jeprintk(jme->pdev,
+			"Unable to request %s interrupt (return: %d)\n",
+			test_bit(JME_FLAG_MSI, &jme->flags) ? "MSI" : "INTx",
+			rc);
+
+		if (test_bit(JME_FLAG_MSI, &jme->flags)) {
+			pci_disable_msi(jme->pdev);
+			clear_bit(JME_FLAG_MSI, &jme->flags);
+		}
+	} else {
+		netdev->irq = jme->pdev->irq;
+	}
+
+	return rc;
+}
+
+static void
+jme_free_irq(struct jme_adapter *jme)
+{
+	free_irq(jme->pdev->irq, jme->dev);
+	if (test_bit(JME_FLAG_MSI, &jme->flags)) {
+		pci_disable_msi(jme->pdev);
+		clear_bit(JME_FLAG_MSI, &jme->flags);
+		jme->dev->irq = jme->pdev->irq;
+	}
+}
+
+static int
+jme_open(struct net_device *netdev)
+{
+	struct jme_adapter *jme = netdev_priv(netdev);
+	int rc;
+
+	jme_clear_pm(jme);
+	JME_NAPI_ENABLE(jme);
+
+	tasklet_enable(&jme->txclean_task);
+	tasklet_hi_enable(&jme->rxclean_task);
+	tasklet_hi_enable(&jme->rxempty_task);
+
+	rc = jme_request_irq(jme);
+	if (rc)
+		goto err_out;
+
+	jme_enable_shadow(jme);
+	jme_start_irq(jme);
+
+	if (test_bit(JME_FLAG_SSET, &jme->flags))
+		jme_set_settings(netdev, &jme->old_ecmd);
+	else
+		jme_reset_phy_processor(jme);
+
+	jme_reset_link(jme);
+
+	return 0;
+
+err_out:
+	netif_stop_queue(netdev);
+	netif_carrier_off(netdev);
+	return rc;
+}
+
+static void
+jme_set_100m_half(struct jme_adapter *jme)
+{
+	u32 bmcr, tmp;
+
+	bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
+	tmp = bmcr & ~(BMCR_ANENABLE | BMCR_SPEED100 |
+		       BMCR_SPEED1000 | BMCR_FULLDPLX);
+	tmp |= BMCR_SPEED100;
+
+	if (bmcr != tmp)
+		jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, tmp);
+
+	if (jme->fpgaver)
+		jwrite32(jme, JME_GHC, GHC_SPEED_100M | GHC_LINK_POLL);
+	else
+		jwrite32(jme, JME_GHC, GHC_SPEED_100M);
+}
+
+#define JME_WAIT_LINK_TIME 2000 /* 2000ms */
+static void
+jme_wait_link(struct jme_adapter *jme)
+{
+	u32 phylink, to = JME_WAIT_LINK_TIME;
+
+	mdelay(1000);
+	phylink = jme_linkstat_from_phy(jme);
+	while (!(phylink & PHY_LINK_UP) && (to -= 10) > 0) {
+		mdelay(10);
+		phylink = jme_linkstat_from_phy(jme);
+	}
+}
+
+static inline void
+jme_phy_off(struct jme_adapter *jme)
+{
+	jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, BMCR_PDOWN);
+}
+
+static int
+jme_close(struct net_device *netdev)
+{
+	struct jme_adapter *jme = netdev_priv(netdev);
+
+	netif_stop_queue(netdev);
+	netif_carrier_off(netdev);
+
+	jme_stop_irq(jme);
+	jme_disable_shadow(jme);
+	jme_free_irq(jme);
+
+	JME_NAPI_DISABLE(jme);
+
+	tasklet_kill(&jme->linkch_task);
+	tasklet_kill(&jme->txclean_task);
+	tasklet_kill(&jme->rxclean_task);
+	tasklet_kill(&jme->rxempty_task);
+
+	jme_reset_ghc_speed(jme);
+	jme_disable_rx_engine(jme);
+	jme_disable_tx_engine(jme);
+	jme_reset_mac_processor(jme);
+	jme_free_rx_resources(jme);
+	jme_free_tx_resources(jme);
+	jme->phylink = 0;
+	jme_phy_off(jme);
+
+	return 0;
+}
+
+static int
+jme_alloc_txdesc(struct jme_adapter *jme,
+			struct sk_buff *skb)
+{
+	struct jme_ring *txring = jme->txring;
+	int idx, nr_alloc, mask = jme->tx_ring_mask;
+
+	idx = txring->next_to_use;
+	nr_alloc = skb_shinfo(skb)->nr_frags + 2;
+
+	if (unlikely(atomic_read(&txring->nr_free) < nr_alloc))
+		return -1;
+
+	atomic_sub(nr_alloc, &txring->nr_free);
+
+	txring->next_to_use = (txring->next_to_use + nr_alloc) & mask;
+
+	return idx;
+}
+
+static void
+jme_fill_tx_map(struct pci_dev *pdev,
+		struct txdesc *txdesc,
+		struct jme_buffer_info *txbi,
+		struct page *page,
+		u32 page_offset,
+		u32 len,
+		u8 hidma)
+{
+	dma_addr_t dmaaddr;
+
+	dmaaddr = pci_map_page(pdev,
+				page,
+				page_offset,
+				len,
+				PCI_DMA_TODEVICE);
+
+	pci_dma_sync_single_for_device(pdev,
+				       dmaaddr,
+				       len,
+				       PCI_DMA_TODEVICE);
+
+	txdesc->dw[0] = 0;
+	txdesc->dw[1] = 0;
+	txdesc->desc2.flags	= TXFLAG_OWN;
+	txdesc->desc2.flags	|= (hidma) ? TXFLAG_64BIT : 0;
+	txdesc->desc2.datalen	= cpu_to_le16(len);
+	txdesc->desc2.bufaddrh	= cpu_to_le32((__u64)dmaaddr >> 32);
+	txdesc->desc2.bufaddrl	= cpu_to_le32(
+					(__u64)dmaaddr & 0xFFFFFFFFUL);
+
+	txbi->mapping = dmaaddr;
+	txbi->len = len;
+}
+
+static void
+jme_map_tx_skb(struct jme_adapter *jme, struct sk_buff *skb, int idx)
+{
+	struct jme_ring *txring = jme->txring;
+	struct txdesc *txdesc = txring->desc, *ctxdesc;
+	struct jme_buffer_info *txbi = txring->bufinf, *ctxbi;
+	u8 hidma = jme->dev->features & NETIF_F_HIGHDMA;
+	int i, nr_frags = skb_shinfo(skb)->nr_frags;
+	int mask = jme->tx_ring_mask;
+	struct skb_frag_struct *frag;
+	u32 len;
+
+	for (i = 0 ; i < nr_frags ; ++i) {
+		frag = &skb_shinfo(skb)->frags[i];
+		ctxdesc = txdesc + ((idx + i + 2) & (mask));
+		ctxbi = txbi + ((idx + i + 2) & (mask));
+
+		jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, frag->page,
+				 frag->page_offset, frag->size, hidma);
+	}
+
+	len = skb_is_nonlinear(skb) ? skb_headlen(skb) : skb->len;
+	ctxdesc = txdesc + ((idx + 1) & (mask));
+	ctxbi = txbi + ((idx + 1) & (mask));
+	jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, virt_to_page(skb->data),
+			offset_in_page(skb->data), len, hidma);
+
+}
+
+static int
+jme_expand_header(struct jme_adapter *jme, struct sk_buff *skb)
+{
+	if (unlikely(skb_shinfo(skb)->gso_size &&
+			skb_header_cloned(skb) &&
+			pskb_expand_head(skb, 0, 0, GFP_ATOMIC))) {
+		dev_kfree_skb(skb);
+		return -1;
+	}
+
+	return 0;
+}
+
+static int
+jme_tx_tso(struct sk_buff *skb,
+		u16 *mss, u8 *flags)
+{
+	*mss = skb_shinfo(skb)->gso_size << TXDESC_MSS_SHIFT;
+	if (*mss) {
+		*flags |= TXFLAG_LSEN;
+
+		if (skb->protocol == htons(ETH_P_IP)) {
+			struct iphdr *iph = ip_hdr(skb);
+
+			iph->check = 0;
+			tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
+								iph->daddr, 0,
+								IPPROTO_TCP,
+								0);
+		} else {
+			struct ipv6hdr *ip6h = ipv6_hdr(skb);
+
+			tcp_hdr(skb)->check = ~csum_ipv6_magic(&ip6h->saddr,
+								&ip6h->daddr, 0,
+								IPPROTO_TCP,
+								0);
+		}
+
+		return 0;
+	}
+
+	return 1;
+}
+
+static void
+jme_tx_csum(struct jme_adapter *jme, struct sk_buff *skb, u8 *flags)
+{
+	if (skb->ip_summed == CHECKSUM_PARTIAL) {
+		u8 ip_proto;
+
+		switch (skb->protocol) {
+		case htons(ETH_P_IP):
+			ip_proto = ip_hdr(skb)->protocol;
+			break;
+		case htons(ETH_P_IPV6):
+			ip_proto = ipv6_hdr(skb)->nexthdr;
+			break;
+		default:
+			ip_proto = 0;
+			break;
+		}
+
+		switch (ip_proto) {
+		case IPPROTO_TCP:
+			*flags |= TXFLAG_TCPCS;
+			break;
+		case IPPROTO_UDP:
+			*flags |= TXFLAG_UDPCS;
+			break;
+		default:
+			msg_tx_err(jme, "Error upper layer protocol.\n");
+			break;
+		}
+	}
+}
+
+static inline void
+jme_tx_vlan(struct sk_buff *skb, u16 *vlan, u8 *flags)
+{
+	if (vlan_tx_tag_present(skb)) {
+		*flags |= TXFLAG_TAGON;
+		*vlan = vlan_tx_tag_get(skb);
+	}
+}
+
+static int
+jme_fill_first_tx_desc(struct jme_adapter *jme, struct sk_buff *skb, int idx)
+{
+	struct jme_ring *txring = jme->txring;
+	struct txdesc *txdesc;
+	struct jme_buffer_info *txbi;
+	u8 flags;
+
+	txdesc = (struct txdesc *)txring->desc + idx;
+	txbi = txring->bufinf + idx;
+
+	txdesc->dw[0] = 0;
+	txdesc->dw[1] = 0;
+	txdesc->dw[2] = 0;
+	txdesc->dw[3] = 0;
+	txdesc->desc1.pktsize = cpu_to_le16(skb->len);
+	/*
+	 * Set OWN bit at final.
+	 * When kernel transmit faster than NIC.
+	 * And NIC trying to send this descriptor before we tell
+	 * it to start sending this TX queue.
+	 * Other fields are already filled correctly.
+	 */
+	wmb();
+	flags = TXFLAG_OWN | TXFLAG_INT;
+	/*
+	 * Set checksum flags while not tso
+	 */
+	if (jme_tx_tso(skb, &txdesc->desc1.mss, &flags))
+		jme_tx_csum(jme, skb, &flags);
+	jme_tx_vlan(skb, &txdesc->desc1.vlan, &flags);
+	txdesc->desc1.flags = flags;
+	/*
+	 * Set tx buffer info after telling NIC to send
+	 * For better tx_clean timing
+	 */
+	wmb();
+	txbi->nr_desc = skb_shinfo(skb)->nr_frags + 2;
+	txbi->skb = skb;
+	txbi->len = skb->len;
+	txbi->start_xmit = jiffies;
+	if (!txbi->start_xmit)
+		txbi->start_xmit = (0UL-1);
+
+	return 0;
+}
+
+static void
+jme_stop_queue_if_full(struct jme_adapter *jme)
+{
+	struct jme_ring *txring = jme->txring;
+	struct jme_buffer_info *txbi = txring->bufinf;
+	int idx = atomic_read(&txring->next_to_clean);
+
+	txbi += idx;
+
+	smp_wmb();
+	if (unlikely(atomic_read(&txring->nr_free) < (MAX_SKB_FRAGS+2))) {
+		netif_stop_queue(jme->dev);
+		msg_tx_queued(jme, "TX Queue Paused.\n");
+		smp_wmb();
+		if (atomic_read(&txring->nr_free)
+			>= (jme->tx_wake_threshold)) {
+			netif_wake_queue(jme->dev);
+			msg_tx_queued(jme, "TX Queue Fast Waked.\n");
+		}
+	}
+
+	if (unlikely(txbi->start_xmit &&
+			(jiffies - txbi->start_xmit) >= TX_TIMEOUT &&
+			txbi->skb)) {
+		netif_stop_queue(jme->dev);
+		msg_tx_queued(jme, "TX Queue Stopped %d@%lu.\n", idx, jiffies);
+	}
+}
+
+/*
+ * This function is already protected by netif_tx_lock()
+ */
+
+static int
+jme_start_xmit(struct sk_buff *skb, struct net_device *netdev)
+{
+	struct jme_adapter *jme = netdev_priv(netdev);
+	int idx;
+
+	if (unlikely(jme_expand_header(jme, skb))) {
+		++(NET_STAT(jme).tx_dropped);
+		return NETDEV_TX_OK;
+	}
+
+	idx = jme_alloc_txdesc(jme, skb);
+
+	if (unlikely(idx < 0)) {
+		netif_stop_queue(netdev);
+		msg_tx_err(jme, "BUG! Tx ring full when queue awake!\n");
+
+		return NETDEV_TX_BUSY;
+	}
+
+	jme_map_tx_skb(jme, skb, idx);
+	jme_fill_first_tx_desc(jme, skb, idx);
+
+	jwrite32(jme, JME_TXCS, jme->reg_txcs |
+				TXCS_SELECT_QUEUE0 |
+				TXCS_QUEUE0S |
+				TXCS_ENABLE);
+	netdev->trans_start = jiffies;
+
+	tx_dbg(jme, "xmit: %d+%d@%lu\n", idx,
+			skb_shinfo(skb)->nr_frags + 2,
+			jiffies);
+	jme_stop_queue_if_full(jme);
+
+	return NETDEV_TX_OK;
+}
+
+static int
+jme_set_macaddr(struct net_device *netdev, void *p)
+{
+	struct jme_adapter *jme = netdev_priv(netdev);
+	struct sockaddr *addr = p;
+	u32 val;
+
+	if (netif_running(netdev))
+		return -EBUSY;
+
+	spin_lock_bh(&jme->macaddr_lock);
+	memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
+
+	val = (addr->sa_data[3] & 0xff) << 24 |
+	      (addr->sa_data[2] & 0xff) << 16 |
+	      (addr->sa_data[1] & 0xff) <<  8 |
+	      (addr->sa_data[0] & 0xff);
+	jwrite32(jme, JME_RXUMA_LO, val);
+	val = (addr->sa_data[5] & 0xff) << 8 |
+	      (addr->sa_data[4] & 0xff);
+	jwrite32(jme, JME_RXUMA_HI, val);
+	spin_unlock_bh(&jme->macaddr_lock);
+
+	return 0;
+}
+
+static void
+jme_set_multi(struct net_device *netdev)
+{
+	struct jme_adapter *jme = netdev_priv(netdev);
+	u32 mc_hash[2] = {};
+	int i;
+
+	spin_lock_bh(&jme->rxmcs_lock);
+
+	jme->reg_rxmcs |= RXMCS_BRDFRAME | RXMCS_UNIFRAME;
+
+	if (netdev->flags & IFF_PROMISC) {
+		jme->reg_rxmcs |= RXMCS_ALLFRAME;
+	} else if (netdev->flags & IFF_ALLMULTI) {
+		jme->reg_rxmcs |= RXMCS_ALLMULFRAME;
+	} else if (netdev->flags & IFF_MULTICAST) {
+		struct dev_mc_list *mclist;
+		int bit_nr;
+
+		jme->reg_rxmcs |= RXMCS_MULFRAME | RXMCS_MULFILTERED;
+		for (i = 0, mclist = netdev->mc_list;
+			mclist && i < netdev->mc_count;
+			++i, mclist = mclist->next) {
+
+			bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) & 0x3F;
+			mc_hash[bit_nr >> 5] |= 1 << (bit_nr & 0x1F);
+		}
+
+		jwrite32(jme, JME_RXMCHT_LO, mc_hash[0]);
+		jwrite32(jme, JME_RXMCHT_HI, mc_hash[1]);
+	}
+
+	wmb();
+	jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
+
+	spin_unlock_bh(&jme->rxmcs_lock);
+}
+
+static int
+jme_change_mtu(struct net_device *netdev, int new_mtu)
+{
+	struct jme_adapter *jme = netdev_priv(netdev);
+
+	if (new_mtu == jme->old_mtu)
+		return 0;
+
+	if (((new_mtu + ETH_HLEN) > MAX_ETHERNET_JUMBO_PACKET_SIZE) ||
+		((new_mtu) < IPV6_MIN_MTU))
+		return -EINVAL;
+
+	if (new_mtu > 4000) {
+		jme->reg_rxcs &= ~RXCS_FIFOTHNP;
+		jme->reg_rxcs |= RXCS_FIFOTHNP_64QW;
+		jme_restart_rx_engine(jme);
+	} else {
+		jme->reg_rxcs &= ~RXCS_FIFOTHNP;
+		jme->reg_rxcs |= RXCS_FIFOTHNP_128QW;
+		jme_restart_rx_engine(jme);
+	}
+
+	if (new_mtu > 1900) {
+		netdev->features &= ~(NETIF_F_HW_CSUM |
+				NETIF_F_TSO |
+				NETIF_F_TSO6);
+	} else {
+		if (test_bit(JME_FLAG_TXCSUM, &jme->flags))
+			netdev->features |= NETIF_F_HW_CSUM;
+		if (test_bit(JME_FLAG_TSO, &jme->flags))
+			netdev->features |= NETIF_F_TSO | NETIF_F_TSO6;
+	}
+
+	netdev->mtu = new_mtu;
+	jme_reset_link(jme);
+
+	return 0;
+}
+
+static void
+jme_tx_timeout(struct net_device *netdev)
+{
+	struct jme_adapter *jme = netdev_priv(netdev);
+
+	jme->phylink = 0;
+	jme_reset_phy_processor(jme);
+	if (test_bit(JME_FLAG_SSET, &jme->flags))
+		jme_set_settings(netdev, &jme->old_ecmd);
+
+	/*
+	 * Force to Reset the link again
+	 */
+	jme_reset_link(jme);
+}
+
+static void
+jme_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
+{
+	struct jme_adapter *jme = netdev_priv(netdev);
+
+	jme->vlgrp = grp;
+}
+
+static void
+jme_get_drvinfo(struct net_device *netdev,
+		     struct ethtool_drvinfo *info)
+{
+	struct jme_adapter *jme = netdev_priv(netdev);
+
+	strcpy(info->driver, DRV_NAME);
+	strcpy(info->version, DRV_VERSION);
+	strcpy(info->bus_info, pci_name(jme->pdev));
+}
+
+static int
+jme_get_regs_len(struct net_device *netdev)
+{
+	return JME_REG_LEN;
+}
+
+static void
+mmapio_memcpy(struct jme_adapter *jme, u32 *p, u32 reg, int len)
+{
+	int i;
+
+	for (i = 0 ; i < len ; i += 4)
+		p[i >> 2] = jread32(jme, reg + i);
+}
+
+static void
+mdio_memcpy(struct jme_adapter *jme, u32 *p, int reg_nr)
+{
+	int i;
+	u16 *p16 = (u16 *)p;
+
+	for (i = 0 ; i < reg_nr ; ++i)
+		p16[i] = jme_mdio_read(jme->dev, jme->mii_if.phy_id, i);
+}
+
+static void
+jme_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p)
+{
+	struct jme_adapter *jme = netdev_priv(netdev);
+	u32 *p32 = (u32 *)p;
+
+	memset(p, 0xFF, JME_REG_LEN);
+
+	regs->version = 1;
+	mmapio_memcpy(jme, p32, JME_MAC, JME_MAC_LEN);
+
+	p32 += 0x100 >> 2;
+	mmapio_memcpy(jme, p32, JME_PHY, JME_PHY_LEN);
+
+	p32 += 0x100 >> 2;
+	mmapio_memcpy(jme, p32, JME_MISC, JME_MISC_LEN);
+
+	p32 += 0x100 >> 2;
+	mmapio_memcpy(jme, p32, JME_RSS, JME_RSS_LEN);
+
+	p32 += 0x100 >> 2;
+	mdio_memcpy(jme, p32, JME_PHY_REG_NR);
+}
+
+static int
+jme_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd)
+{
+	struct jme_adapter *jme = netdev_priv(netdev);
+
+	ecmd->tx_coalesce_usecs = PCC_TX_TO;
+	ecmd->tx_max_coalesced_frames = PCC_TX_CNT;
+
+	if (test_bit(JME_FLAG_POLL, &jme->flags)) {
+		ecmd->use_adaptive_rx_coalesce = false;
+		ecmd->rx_coalesce_usecs = 0;
+		ecmd->rx_max_coalesced_frames = 0;
+		return 0;
+	}
+
+	ecmd->use_adaptive_rx_coalesce = true;
+
+	switch (jme->dpi.cur) {
+	case PCC_P1:
+		ecmd->rx_coalesce_usecs = PCC_P1_TO;
+		ecmd->rx_max_coalesced_frames = PCC_P1_CNT;
+		break;
+	case PCC_P2:
+		ecmd->rx_coalesce_usecs = PCC_P2_TO;
+		ecmd->rx_max_coalesced_frames = PCC_P2_CNT;
+		break;
+	case PCC_P3:
+		ecmd->rx_coalesce_usecs = PCC_P3_TO;
+		ecmd->rx_max_coalesced_frames = PCC_P3_CNT;
+		break;
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+static int
+jme_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd)
+{
+	struct jme_adapter *jme = netdev_priv(netdev);
+	struct dynpcc_info *dpi = &(jme->dpi);
+
+	if (netif_running(netdev))
+		return -EBUSY;
+
+	if (ecmd->use_adaptive_rx_coalesce
+	&& test_bit(JME_FLAG_POLL, &jme->flags)) {
+		clear_bit(JME_FLAG_POLL, &jme->flags);
+		jme->jme_rx = netif_rx;
+		jme->jme_vlan_rx = vlan_hwaccel_rx;
+		dpi->cur		= PCC_P1;
+		dpi->attempt		= PCC_P1;
+		dpi->cnt		= 0;
+		jme_set_rx_pcc(jme, PCC_P1);
+		jme_interrupt_mode(jme);
+	} else if (!(ecmd->use_adaptive_rx_coalesce)
+	&& !(test_bit(JME_FLAG_POLL, &jme->flags))) {
+		set_bit(JME_FLAG_POLL, &jme->flags);
+		jme->jme_rx = netif_receive_skb;
+		jme->jme_vlan_rx = vlan_hwaccel_receive_skb;
+		jme_interrupt_mode(jme);
+	}
+
+	return 0;
+}
+
+static void
+jme_get_pauseparam(struct net_device *netdev,
+			struct ethtool_pauseparam *ecmd)
+{
+	struct jme_adapter *jme = netdev_priv(netdev);
+	u32 val;
+
+	ecmd->tx_pause = (jme->reg_txpfc & TXPFC_PF_EN) != 0;
+	ecmd->rx_pause = (jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0;
+
+	spin_lock_bh(&jme->phy_lock);
+	val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
+	spin_unlock_bh(&jme->phy_lock);
+
+	ecmd->autoneg =
+		(val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0;
+}
+
+static int
+jme_set_pauseparam(struct net_device *netdev,
+			struct ethtool_pauseparam *ecmd)
+{
+	struct jme_adapter *jme = netdev_priv(netdev);
+	u32 val;
+
+	if (((jme->reg_txpfc & TXPFC_PF_EN) != 0) ^
+		(ecmd->tx_pause != 0)) {
+
+		if (ecmd->tx_pause)
+			jme->reg_txpfc |= TXPFC_PF_EN;
+		else
+			jme->reg_txpfc &= ~TXPFC_PF_EN;
+
+		jwrite32(jme, JME_TXPFC, jme->reg_txpfc);
+	}
+
+	spin_lock_bh(&jme->rxmcs_lock);
+	if (((jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0) ^
+		(ecmd->rx_pause != 0)) {
+
+		if (ecmd->rx_pause)
+			jme->reg_rxmcs |= RXMCS_FLOWCTRL;
+		else
+			jme->reg_rxmcs &= ~RXMCS_FLOWCTRL;
+
+		jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
+	}
+	spin_unlock_bh(&jme->rxmcs_lock);
+
+	spin_lock_bh(&jme->phy_lock);
+	val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
+	if (((val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0) ^
+		(ecmd->autoneg != 0)) {
+
+		if (ecmd->autoneg)
+			val |= (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
+		else
+			val &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
+
+		jme_mdio_write(jme->dev, jme->mii_if.phy_id,
+				MII_ADVERTISE, val);
+	}
+	spin_unlock_bh(&jme->phy_lock);
+
+	return 0;
+}
+
+static void
+jme_get_wol(struct net_device *netdev,
+		struct ethtool_wolinfo *wol)
+{
+	struct jme_adapter *jme = netdev_priv(netdev);
+
+	wol->supported = WAKE_MAGIC | WAKE_PHY;
+
+	wol->wolopts = 0;
+
+	if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
+		wol->wolopts |= WAKE_PHY;
+
+	if (jme->reg_pmcs & PMCS_MFEN)
+		wol->wolopts |= WAKE_MAGIC;
+
+}
+
+static int
+jme_set_wol(struct net_device *netdev,
+		struct ethtool_wolinfo *wol)
+{
+	struct jme_adapter *jme = netdev_priv(netdev);
+
+	if (wol->wolopts & (WAKE_MAGICSECURE |
+				WAKE_UCAST |
+				WAKE_MCAST |
+				WAKE_BCAST |
+				WAKE_ARP))
+		return -EOPNOTSUPP;
+
+	jme->reg_pmcs = 0;
+
+	if (wol->wolopts & WAKE_PHY)
+		jme->reg_pmcs |= PMCS_LFEN | PMCS_LREN;
+
+	if (wol->wolopts & WAKE_MAGIC)
+		jme->reg_pmcs |= PMCS_MFEN;
+
+	jwrite32(jme, JME_PMCS, jme->reg_pmcs);
+
+	return 0;
+}
+
+static int
+jme_get_settings(struct net_device *netdev,
+		     struct ethtool_cmd *ecmd)
+{
+	struct jme_adapter *jme = netdev_priv(netdev);
+	int rc;
+
+	spin_lock_bh(&jme->phy_lock);
+	rc = mii_ethtool_gset(&(jme->mii_if), ecmd);
+	spin_unlock_bh(&jme->phy_lock);
+	return rc;
+}
+
+static int
+jme_set_settings(struct net_device *netdev,
+		     struct ethtool_cmd *ecmd)
+{
+	struct jme_adapter *jme = netdev_priv(netdev);
+	int rc, fdc = 0;
+
+	if (ecmd->speed == SPEED_1000 && ecmd->autoneg != AUTONEG_ENABLE)
+		return -EINVAL;
+
+	if (jme->mii_if.force_media &&
+	ecmd->autoneg != AUTONEG_ENABLE &&
+	(jme->mii_if.full_duplex != ecmd->duplex))
+		fdc = 1;
+
+	spin_lock_bh(&jme->phy_lock);
+	rc = mii_ethtool_sset(&(jme->mii_if), ecmd);
+	spin_unlock_bh(&jme->phy_lock);
+
+	if (!rc && fdc)
+		jme_reset_link(jme);
+
+	if (!rc) {
+		set_bit(JME_FLAG_SSET, &jme->flags);
+		jme->old_ecmd = *ecmd;
+	}
+
+	return rc;
+}
+
+static u32
+jme_get_link(struct net_device *netdev)
+{
+	struct jme_adapter *jme = netdev_priv(netdev);
+	return jread32(jme, JME_PHY_LINK) & PHY_LINK_UP;
+}
+
+static u32
+jme_get_msglevel(struct net_device *netdev)
+{
+	struct jme_adapter *jme = netdev_priv(netdev);
+	return jme->msg_enable;
+}
+
+static void
+jme_set_msglevel(struct net_device *netdev, u32 value)
+{
+	struct jme_adapter *jme = netdev_priv(netdev);
+	jme->msg_enable = value;
+}
+
+static u32
+jme_get_rx_csum(struct net_device *netdev)
+{
+	struct jme_adapter *jme = netdev_priv(netdev);
+	return jme->reg_rxmcs & RXMCS_CHECKSUM;
+}
+
+static int
+jme_set_rx_csum(struct net_device *netdev, u32 on)
+{
+	struct jme_adapter *jme = netdev_priv(netdev);
+
+	spin_lock_bh(&jme->rxmcs_lock);
+	if (on)
+		jme->reg_rxmcs |= RXMCS_CHECKSUM;
+	else
+		jme->reg_rxmcs &= ~RXMCS_CHECKSUM;
+	jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
+	spin_unlock_bh(&jme->rxmcs_lock);
+
+	return 0;
+}
+
+static int
+jme_set_tx_csum(struct net_device *netdev, u32 on)
+{
+	struct jme_adapter *jme = netdev_priv(netdev);
+
+	if (on) {
+		set_bit(JME_FLAG_TXCSUM, &jme->flags);
+		if (netdev->mtu <= 1900)
+			netdev->features |= NETIF_F_HW_CSUM;
+	} else {
+		clear_bit(JME_FLAG_TXCSUM, &jme->flags);
+		netdev->features &= ~NETIF_F_HW_CSUM;
+	}
+
+	return 0;
+}
+
+static int
+jme_set_tso(struct net_device *netdev, u32 on)
+{
+	struct jme_adapter *jme = netdev_priv(netdev);
+
+	if (on) {
+		set_bit(JME_FLAG_TSO, &jme->flags);
+		if (netdev->mtu <= 1900)
+			netdev->features |= NETIF_F_TSO | NETIF_F_TSO6;
+	} else {
+		clear_bit(JME_FLAG_TSO, &jme->flags);
+		netdev->features &= ~(NETIF_F_TSO | NETIF_F_TSO6);
+	}
+
+	return 0;
+}
+
+static int
+jme_nway_reset(struct net_device *netdev)
+{
+	struct jme_adapter *jme = netdev_priv(netdev);
+	jme_restart_an(jme);
+	return 0;
+}
+
+static u8
+jme_smb_read(struct jme_adapter *jme, unsigned int addr)
+{
+	u32 val;
+	int to;
+
+	val = jread32(jme, JME_SMBCSR);
+	to = JME_SMB_BUSY_TIMEOUT;
+	while ((val & SMBCSR_BUSY) && --to) {
+		msleep(1);
+		val = jread32(jme, JME_SMBCSR);
+	}
+	if (!to) {
+		msg_hw(jme, "SMB Bus Busy.\n");
+		return 0xFF;
+	}
+
+	jwrite32(jme, JME_SMBINTF,
+		((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
+		SMBINTF_HWRWN_READ |
+		SMBINTF_HWCMD);
+
+	val = jread32(jme, JME_SMBINTF);
+	to = JME_SMB_BUSY_TIMEOUT;
+	while ((val & SMBINTF_HWCMD) && --to) {
+		msleep(1);
+		val = jread32(jme, JME_SMBINTF);
+	}
+	if (!to) {
+		msg_hw(jme, "SMB Bus Busy.\n");
+		return 0xFF;
+	}
+
+	return (val & SMBINTF_HWDATR) >> SMBINTF_HWDATR_SHIFT;
+}
+
+static void
+jme_smb_write(struct jme_adapter *jme, unsigned int addr, u8 data)
+{
+	u32 val;
+	int to;
+
+	val = jread32(jme, JME_SMBCSR);
+	to = JME_SMB_BUSY_TIMEOUT;
+	while ((val & SMBCSR_BUSY) && --to) {
+		msleep(1);
+		val = jread32(jme, JME_SMBCSR);
+	}
+	if (!to) {
+		msg_hw(jme, "SMB Bus Busy.\n");
+		return;
+	}
+
+	jwrite32(jme, JME_SMBINTF,
+		((data << SMBINTF_HWDATW_SHIFT) & SMBINTF_HWDATW) |
+		((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
+		SMBINTF_HWRWN_WRITE |
+		SMBINTF_HWCMD);
+
+	val = jread32(jme, JME_SMBINTF);
+	to = JME_SMB_BUSY_TIMEOUT;
+	while ((val & SMBINTF_HWCMD) && --to) {
+		msleep(1);
+		val = jread32(jme, JME_SMBINTF);
+	}
+	if (!to) {
+		msg_hw(jme, "SMB Bus Busy.\n");
+		return;
+	}
+
+	mdelay(2);
+}
+
+static int
+jme_get_eeprom_len(struct net_device *netdev)
+{
+	struct jme_adapter *jme = netdev_priv(netdev);
+	u32 val;
+	val = jread32(jme, JME_SMBCSR);
+	return (val & SMBCSR_EEPROMD) ? JME_SMB_LEN : 0;
+}
+
+static int
+jme_get_eeprom(struct net_device *netdev,
+		struct ethtool_eeprom *eeprom, u8 *data)
+{
+	struct jme_adapter *jme = netdev_priv(netdev);
+	int i, offset = eeprom->offset, len = eeprom->len;
+
+	/*
+	 * ethtool will check the boundary for us
+	 */
+	eeprom->magic = JME_EEPROM_MAGIC;
+	for (i = 0 ; i < len ; ++i)
+		data[i] = jme_smb_read(jme, i + offset);
+
+	return 0;
+}
+
+static int
+jme_set_eeprom(struct net_device *netdev,
+		struct ethtool_eeprom *eeprom, u8 *data)
+{
+	struct jme_adapter *jme = netdev_priv(netdev);
+	int i, offset = eeprom->offset, len = eeprom->len;
+
+	if (eeprom->magic != JME_EEPROM_MAGIC)
+		return -EINVAL;
+
+	/*
+	 * ethtool will check the boundary for us
+	 */
+	for (i = 0 ; i < len ; ++i)
+		jme_smb_write(jme, i + offset, data[i]);
+
+	return 0;
+}
+
+static const struct ethtool_ops jme_ethtool_ops = {
+	.get_drvinfo            = jme_get_drvinfo,
+	.get_regs_len		= jme_get_regs_len,
+	.get_regs		= jme_get_regs,
+	.get_coalesce		= jme_get_coalesce,
+	.set_coalesce		= jme_set_coalesce,
+	.get_pauseparam		= jme_get_pauseparam,
+	.set_pauseparam		= jme_set_pauseparam,
+	.get_wol		= jme_get_wol,
+	.set_wol		= jme_set_wol,
+	.get_settings		= jme_get_settings,
+	.set_settings		= jme_set_settings,
+	.get_link		= jme_get_link,
+	.get_msglevel           = jme_get_msglevel,
+	.set_msglevel           = jme_set_msglevel,
+	.get_rx_csum		= jme_get_rx_csum,
+	.set_rx_csum		= jme_set_rx_csum,
+	.set_tx_csum		= jme_set_tx_csum,
+	.set_tso		= jme_set_tso,
+	.set_sg			= ethtool_op_set_sg,
+	.nway_reset             = jme_nway_reset,
+	.get_eeprom_len		= jme_get_eeprom_len,
+	.get_eeprom		= jme_get_eeprom,
+	.set_eeprom		= jme_set_eeprom,
+};
+
+static int
+jme_pci_dma64(struct pci_dev *pdev)
+{
+	if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK))
+		if (!pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))
+			return 1;
+
+	if (!pci_set_dma_mask(pdev, DMA_40BIT_MASK))
+		if (!pci_set_consistent_dma_mask(pdev, DMA_40BIT_MASK))
+			return 1;
+
+	if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK))
+		if (!pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK))
+			return 0;
+
+	return -1;
+}
+
+static inline void
+jme_phy_init(struct jme_adapter *jme)
+{
+	u16 reg26;
+
+	reg26 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 26);
+	jme_mdio_write(jme->dev, jme->mii_if.phy_id, 26, reg26 | 0x1000);
+}
+
+static inline void
+jme_check_hw_ver(struct jme_adapter *jme)
+{
+	u32 chipmode;
+
+	chipmode = jread32(jme, JME_CHIPMODE);
+
+	jme->fpgaver = (chipmode & CM_FPGAVER_MASK) >> CM_FPGAVER_SHIFT;
+	jme->chiprev = (chipmode & CM_CHIPREV_MASK) >> CM_CHIPREV_SHIFT;
+}
+
+static int __devinit
+jme_init_one(struct pci_dev *pdev,
+	     const struct pci_device_id *ent)
+{
+	int rc = 0, using_dac, i;
+	struct net_device *netdev;
+	struct jme_adapter *jme;
+	u16 bmcr, bmsr;
+	u32 apmc;
+
+	/*
+	 * set up PCI device basics
+	 */
+	rc = pci_enable_device(pdev);
+	if (rc) {
+		jeprintk(pdev, "Cannot enable PCI device.\n");
+		goto err_out;
+	}
+
+	using_dac = jme_pci_dma64(pdev);
+	if (using_dac < 0) {
+		jeprintk(pdev, "Cannot set PCI DMA Mask.\n");
+		rc = -EIO;
+		goto err_out_disable_pdev;
+	}
+
+	if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
+		jeprintk(pdev, "No PCI resource region found.\n");
+		rc = -ENOMEM;
+		goto err_out_disable_pdev;
+	}
+
+	rc = pci_request_regions(pdev, DRV_NAME);
+	if (rc) {
+		jeprintk(pdev, "Cannot obtain PCI resource region.\n");
+		goto err_out_disable_pdev;
+	}
+
+	pci_set_master(pdev);
+
+	/*
+	 * alloc and init net device
+	 */
+	netdev = alloc_etherdev(sizeof(*jme));
+	if (!netdev) {
+		jeprintk(pdev, "Cannot allocate netdev structure.\n");
+		rc = -ENOMEM;
+		goto err_out_release_regions;
+	}
+	netdev->open			= jme_open;
+	netdev->stop			= jme_close;
+	netdev->hard_start_xmit		= jme_start_xmit;
+	netdev->set_mac_address		= jme_set_macaddr;
+	netdev->set_multicast_list	= jme_set_multi;
+	netdev->change_mtu		= jme_change_mtu;
+	netdev->ethtool_ops		= &jme_ethtool_ops;
+	netdev->tx_timeout		= jme_tx_timeout;
+	netdev->watchdog_timeo		= TX_TIMEOUT;
+	netdev->vlan_rx_register	= jme_vlan_rx_register;
+	NETDEV_GET_STATS(netdev, &jme_get_stats);
+	netdev->features		=	NETIF_F_HW_CSUM |
+						NETIF_F_SG |
+						NETIF_F_TSO |
+						NETIF_F_TSO6 |
+						NETIF_F_HW_VLAN_TX |
+						NETIF_F_HW_VLAN_RX;
+	if (using_dac)
+		netdev->features	|=	NETIF_F_HIGHDMA;
+
+	SET_NETDEV_DEV(netdev, &pdev->dev);
+	pci_set_drvdata(pdev, netdev);
+
+	/*
+	 * init adapter info
+	 */
+	jme = netdev_priv(netdev);
+	jme->pdev = pdev;
+	jme->dev = netdev;
+	jme->jme_rx = netif_rx;
+	jme->jme_vlan_rx = vlan_hwaccel_rx;
+	jme->old_mtu = netdev->mtu = 1500;
+	jme->phylink = 0;
+	jme->tx_ring_size = 1 << 10;
+	jme->tx_ring_mask = jme->tx_ring_size - 1;
+	jme->tx_wake_threshold = 1 << 9;
+	jme->rx_ring_size = 1 << 9;
+	jme->rx_ring_mask = jme->rx_ring_size - 1;
+	jme->msg_enable = JME_DEF_MSG_ENABLE;
+	jme->regs = ioremap(pci_resource_start(pdev, 0),
+			     pci_resource_len(pdev, 0));
+	if (!(jme->regs)) {
+		jeprintk(pdev, "Mapping PCI resource region error.\n");
+		rc = -ENOMEM;
+		goto err_out_free_netdev;
+	}
+	jme->shadow_regs = pci_alloc_consistent(pdev,
+						sizeof(u32) * SHADOW_REG_NR,
+						&(jme->shadow_dma));
+	if (!(jme->shadow_regs)) {
+		jeprintk(pdev, "Allocating shadow register mapping error.\n");
+		rc = -ENOMEM;
+		goto err_out_unmap;
+	}
+
+	if (no_pseudohp) {
+		apmc = jread32(jme, JME_APMC) & ~JME_APMC_PSEUDO_HP_EN;
+		jwrite32(jme, JME_APMC, apmc);
+	} else if (force_pseudohp) {
+		apmc = jread32(jme, JME_APMC) | JME_APMC_PSEUDO_HP_EN;
+		jwrite32(jme, JME_APMC, apmc);
+	}
+
+	NETIF_NAPI_SET(netdev, &jme->napi, jme_poll, jme->rx_ring_size >> 2)
+
+	spin_lock_init(&jme->phy_lock);
+	spin_lock_init(&jme->macaddr_lock);
+	spin_lock_init(&jme->rxmcs_lock);
+
+	atomic_set(&jme->link_changing, 1);
+	atomic_set(&jme->rx_cleaning, 1);
+	atomic_set(&jme->tx_cleaning, 1);
+	atomic_set(&jme->rx_empty, 1);
+
+	tasklet_init(&jme->pcc_task,
+		     &jme_pcc_tasklet,
+		     (unsigned long) jme);
+	tasklet_init(&jme->linkch_task,
+		     &jme_link_change_tasklet,
+		     (unsigned long) jme);
+	tasklet_init(&jme->txclean_task,
+		     &jme_tx_clean_tasklet,
+		     (unsigned long) jme);
+	tasklet_init(&jme->rxclean_task,
+		     &jme_rx_clean_tasklet,
+		     (unsigned long) jme);
+	tasklet_init(&jme->rxempty_task,
+		     &jme_rx_empty_tasklet,
+		     (unsigned long) jme);
+	tasklet_disable_nosync(&jme->txclean_task);
+	tasklet_disable_nosync(&jme->rxclean_task);
+	tasklet_disable_nosync(&jme->rxempty_task);
+	jme->dpi.cur = PCC_P1;
+
+	jme->reg_ghc = 0;
+	jme->reg_rxcs = RXCS_DEFAULT;
+	jme->reg_rxmcs = RXMCS_DEFAULT;
+	jme->reg_txpfc = 0;
+	jme->reg_pmcs = PMCS_MFEN;
+	set_bit(JME_FLAG_TXCSUM, &jme->flags);
+	set_bit(JME_FLAG_TSO, &jme->flags);
+
+	/*
+	 * Get Max Read Req Size from PCI Config Space
+	 */
+	pci_read_config_byte(pdev, PCI_DCSR_MRRS, &jme->mrrs);
+	jme->mrrs &= PCI_DCSR_MRRS_MASK;
+	switch (jme->mrrs) {
+	case MRRS_128B:
+		jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_128B;
+		break;
+	case MRRS_256B:
+		jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_256B;
+		break;
+	default:
+		jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_512B;
+		break;
+	};
+
+	/*
+	 * Must check before reset_mac_processor
+	 */
+	jme_check_hw_ver(jme);
+	jme->mii_if.dev = netdev;
+	if (jme->fpgaver) {
+		jme->mii_if.phy_id = 0;
+		for (i = 1 ; i < 32 ; ++i) {
+			bmcr = jme_mdio_read(netdev, i, MII_BMCR);
+			bmsr = jme_mdio_read(netdev, i, MII_BMSR);
+			if (bmcr != 0xFFFFU && (bmcr != 0 || bmsr != 0)) {
+				jme->mii_if.phy_id = i;
+				break;
+			}
+		}
+
+		if (!jme->mii_if.phy_id) {
+			rc = -EIO;
+			jeprintk(pdev, "Can not find phy_id.\n");
+			 goto err_out_free_shadow;
+		}
+
+		jme->reg_ghc |= GHC_LINK_POLL;
+	} else {
+		jme->mii_if.phy_id = 1;
+	}
+	if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250)
+		jme->mii_if.supports_gmii = true;
+	else
+		jme->mii_if.supports_gmii = false;
+	jme->mii_if.mdio_read = jme_mdio_read;
+	jme->mii_if.mdio_write = jme_mdio_write;
+
+	jme_clear_pm(jme);
+	jme_set_phyfifoa(jme);
+	pci_read_config_byte(pdev, PCI_REVISION_ID, &jme->rev);
+	if (!jme->fpgaver)
+		jme_phy_init(jme);
+	jme_phy_off(jme);
+
+	/*
+	 * Reset MAC processor and reload EEPROM for MAC Address
+	 */
+	jme_reset_mac_processor(jme);
+	rc = jme_reload_eeprom(jme);
+	if (rc) {
+		jeprintk(pdev,
+			"Reload eeprom for reading MAC Address error.\n");
+		goto err_out_free_shadow;
+	}
+	jme_load_macaddr(netdev);
+
+	/*
+	 * Tell stack that we are not ready to work until open()
+	 */
+	netif_carrier_off(netdev);
+	netif_stop_queue(netdev);
+
+	/*
+	 * Register netdev
+	 */
+	rc = register_netdev(netdev);
+	if (rc) {
+		jeprintk(pdev, "Cannot register net device.\n");
+		goto err_out_free_shadow;
+	}
+
+	msg_probe(jme,
+		"JMC250 gigabit%s ver:%x rev:%x "
+		"macaddr:%02x:%02x:%02x:%02x:%02x:%02x\n",
+		(jme->fpgaver != 0) ? " (FPGA)" : "",
+		(jme->fpgaver != 0) ? jme->fpgaver : jme->chiprev,
+		jme->rev,
+		netdev->dev_addr[0],
+		netdev->dev_addr[1],
+		netdev->dev_addr[2],
+		netdev->dev_addr[3],
+		netdev->dev_addr[4],
+		netdev->dev_addr[5]);
+
+	return 0;
+
+err_out_free_shadow:
+	pci_free_consistent(pdev,
+			    sizeof(u32) * SHADOW_REG_NR,
+			    jme->shadow_regs,
+			    jme->shadow_dma);
+err_out_unmap:
+	iounmap(jme->regs);
+err_out_free_netdev:
+	pci_set_drvdata(pdev, NULL);
+	free_netdev(netdev);
+err_out_release_regions:
+	pci_release_regions(pdev);
+err_out_disable_pdev:
+	pci_disable_device(pdev);
+err_out:
+	return rc;
+}
+
+static void __devexit
+jme_remove_one(struct pci_dev *pdev)
+{
+	struct net_device *netdev = pci_get_drvdata(pdev);
+	struct jme_adapter *jme = netdev_priv(netdev);
+
+	unregister_netdev(netdev);
+	pci_free_consistent(pdev,
+			    sizeof(u32) * SHADOW_REG_NR,
+			    jme->shadow_regs,
+			    jme->shadow_dma);
+	iounmap(jme->regs);
+	pci_set_drvdata(pdev, NULL);
+	free_netdev(netdev);
+	pci_release_regions(pdev);
+	pci_disable_device(pdev);
+
+}
+
+static int
+jme_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+	struct net_device *netdev = pci_get_drvdata(pdev);
+	struct jme_adapter *jme = netdev_priv(netdev);
+
+	atomic_dec(&jme->link_changing);
+
+	netif_device_detach(netdev);
+	netif_stop_queue(netdev);
+	jme_stop_irq(jme);
+
+	tasklet_disable(&jme->txclean_task);
+	tasklet_disable(&jme->rxclean_task);
+	tasklet_disable(&jme->rxempty_task);
+
+	jme_disable_shadow(jme);
+
+	if (netif_carrier_ok(netdev)) {
+		if (test_bit(JME_FLAG_POLL, &jme->flags))
+			jme_polling_mode(jme);
+
+		jme_stop_pcc_timer(jme);
+		jme_reset_ghc_speed(jme);
+		jme_disable_rx_engine(jme);
+		jme_disable_tx_engine(jme);
+		jme_reset_mac_processor(jme);
+		jme_free_rx_resources(jme);
+		jme_free_tx_resources(jme);
+		netif_carrier_off(netdev);
+		jme->phylink = 0;
+	}
+
+	tasklet_enable(&jme->txclean_task);
+	tasklet_hi_enable(&jme->rxclean_task);
+	tasklet_hi_enable(&jme->rxempty_task);
+
+	pci_save_state(pdev);
+	if (jme->reg_pmcs) {
+		jme_set_100m_half(jme);
+
+		if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
+			jme_wait_link(jme);
+
+		jwrite32(jme, JME_PMCS, jme->reg_pmcs);
+
+		pci_enable_wake(pdev, PCI_D3cold, true);
+	} else {
+		jme_phy_off(jme);
+	}
+	pci_set_power_state(pdev, PCI_D3cold);
+
+	return 0;
+}
+
+static int
+jme_resume(struct pci_dev *pdev)
+{
+	struct net_device *netdev = pci_get_drvdata(pdev);
+	struct jme_adapter *jme = netdev_priv(netdev);
+
+	jme_clear_pm(jme);
+	pci_restore_state(pdev);
+
+	if (test_bit(JME_FLAG_SSET, &jme->flags))
+		jme_set_settings(netdev, &jme->old_ecmd);
+	else
+		jme_reset_phy_processor(jme);
+
+	jme_enable_shadow(jme);
+	jme_start_irq(jme);
+	netif_device_attach(netdev);
+
+	atomic_inc(&jme->link_changing);
+
+	jme_reset_link(jme);
+
+	return 0;
+}
+
+static struct pci_device_id jme_pci_tbl[] = {
+	{ PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC250) },
+	{ PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC260) },
+	{ }
+};
+
+static struct pci_driver jme_driver = {
+	.name           = DRV_NAME,
+	.id_table       = jme_pci_tbl,
+	.probe          = jme_init_one,
+	.remove         = __devexit_p(jme_remove_one),
+#ifdef CONFIG_PM
+	.suspend        = jme_suspend,
+	.resume         = jme_resume,
+#endif /* CONFIG_PM */
+};
+
+static int __init
+jme_init_module(void)
+{
+	printk(KERN_INFO PFX "JMicron JMC250 gigabit ethernet "
[… more lines in the raw message]

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diff -uprN -X ./dontdiff netdev-2.6/drivers/net/jme.h linux/drivers/net/jme.h

drivers/net/jme.h +1199 -0

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diff -uprN -X ./dontdiff netdev-2.6/drivers/net/Kconfig linux/drivers/net/Kconfig

drivers/net/Kconfig +12 -0

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diff -uprN -X ./dontdiff netdev-2.6/drivers/net/Makefile linux/drivers/net/Makefile

drivers/net/Makefile +1 -0

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diff -uprN -X ./dontdiff netdev-2.6/MAINTAINERS linux/MAINTAINERS

MAINTAINERS +6 -1

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