Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 734 insertions, 0 deletions

diff --git a/drivers/net/ethernet/8390/ne2k-pci.c b/drivers/net/ethernet/8390/ne2k-pci.c
new file mode 100644
index 0000000000..65f56a98c0
--- /dev/null
+++ b/drivers/net/ethernet/8390/ne2k-pci.c
@@ -0,0 +1,734 @@
+// SPDX-License-Identifier: GPL-1.0+
+/* A Linux device driver for PCI NE2000 clones.
+ *
+ * Authors and other copyright holders:
+ * 1992-2000 by Donald Becker, NE2000 core and various modifications.
+ * 1995-1998 by Paul Gortmaker, core modifications and PCI support.
+ * Copyright 1993 assigned to the United States Government as represented
+ * by the Director, National Security Agency.
+ *
+ * This software may be used and distributed according to the terms of
+ * the GNU General Public License (GPL), incorporated herein by reference.
+ * Drivers based on or derived from this code fall under the GPL and must
+ * retain the authorship, copyright and license notice.  This file is not
+ * a complete program and may only be used when the entire operating
+ * system is licensed under the GPL.
+ *
+ * The author may be reached as becker@scyld.com, or C/O
+ * Scyld Computing Corporation
+ * 410 Severn Ave., Suite 210
+ * Annapolis MD 21403
+ *
+ * Issues remaining:
+ * People are making PCI NE2000 clones! Oh the horror, the horror...
+ * Limited full-duplex support.
+ */
+
+#define DRV_NAME	"ne2k-pci"
+#define DRV_DESCRIPTION	"PCI NE2000 clone driver"
+#define DRV_AUTHOR	"Donald Becker / Paul Gortmaker"
+#define DRV_VERSION	"1.03"
+#define DRV_RELDATE	"9/22/2003"
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+/* The user-configurable values.
+ * These may be modified when a driver module is loaded.
+ */
+
+/* More are supported, limit only on options */
+#define MAX_UNITS 8
+
+/* Used to pass the full-duplex flag, etc. */
+static int full_duplex[MAX_UNITS];
+static int options[MAX_UNITS];
+
+/* Force a non std. amount of memory.  Units are 256 byte pages. */
+/* #define PACKETBUF_MEMSIZE	0x40 */
+
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/ethtool.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+
+#include <linux/io.h>
+#include <asm/irq.h>
+#include <linux/uaccess.h>
+
+#include "8390.h"
+
+static int ne2k_msg_enable;
+
+static const int default_msg_level = (NETIF_MSG_DRV | NETIF_MSG_PROBE |
+				      NETIF_MSG_RX_ERR | NETIF_MSG_TX_ERR);
+
+#if defined(__powerpc__)
+#define inl_le(addr)  le32_to_cpu(inl(addr))
+#define inw_le(addr)  le16_to_cpu(inw(addr))
+#endif
+
+MODULE_AUTHOR(DRV_AUTHOR);
+MODULE_DESCRIPTION(DRV_DESCRIPTION);
+MODULE_VERSION(DRV_VERSION);
+MODULE_LICENSE("GPL");
+
+module_param_named(msg_enable, ne2k_msg_enable, int, 0444);
+module_param_array(options, int, NULL, 0);
+module_param_array(full_duplex, int, NULL, 0);
+MODULE_PARM_DESC(msg_enable, "Debug message level (see linux/netdevice.h for bitmap)");
+MODULE_PARM_DESC(options, "Bit 5: full duplex");
+MODULE_PARM_DESC(full_duplex, "full duplex setting(s) (1)");
+
+/* Some defines that people can play with if so inclined.
+ */
+
+/* Use 32 bit data-movement operations instead of 16 bit. */
+#define USE_LONGIO
+
+/* Do we implement the read before write bugfix ? */
+/* #define NE_RW_BUGFIX */
+
+/* Flags.  We rename an existing ei_status field to store flags!
+ * Thus only the low 8 bits are usable for non-init-time flags.
+ */
+#define ne2k_flags reg0
+
+enum {
+	/* Chip can do only 16/32-bit xfers. */
+	ONLY_16BIT_IO = 8, ONLY_32BIT_IO = 4,
+	/* User override. */
+	FORCE_FDX = 0x20,
+	REALTEK_FDX = 0x40, HOLTEK_FDX = 0x80,
+	STOP_PG_0x60 = 0x100,
+};
+
+enum ne2k_pci_chipsets {
+	CH_RealTek_RTL_8029 = 0,
+	CH_Winbond_89C940,
+	CH_Compex_RL2000,
+	CH_KTI_ET32P2,
+	CH_NetVin_NV5000SC,
+	CH_Via_86C926,
+	CH_SureCom_NE34,
+	CH_Winbond_W89C940F,
+	CH_Holtek_HT80232,
+	CH_Holtek_HT80229,
+	CH_Winbond_89C940_8c4a,
+};
+
+
+static struct {
+	char *name;
+	int flags;
+} pci_clone_list[] = {
+	{"RealTek RTL-8029(AS)", REALTEK_FDX},
+	{"Winbond 89C940", 0},
+	{"Compex RL2000", 0},
+	{"KTI ET32P2", 0},
+	{"NetVin NV5000SC", 0},
+	{"Via 86C926", ONLY_16BIT_IO},
+	{"SureCom NE34", 0},
+	{"Winbond W89C940F", 0},
+	{"Holtek HT80232", ONLY_16BIT_IO | HOLTEK_FDX},
+	{"Holtek HT80229", ONLY_32BIT_IO | HOLTEK_FDX | STOP_PG_0x60 },
+	{"Winbond W89C940(misprogrammed)", 0},
+	{NULL,}
+};
+
+
+static const struct pci_device_id ne2k_pci_tbl[] = {
+	{ 0x10ec, 0x8029, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_RealTek_RTL_8029 },
+	{ 0x1050, 0x0940, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Winbond_89C940 },
+	{ 0x11f6, 0x1401, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Compex_RL2000 },
+	{ 0x8e2e, 0x3000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_KTI_ET32P2 },
+	{ 0x4a14, 0x5000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_NetVin_NV5000SC },
+	{ 0x1106, 0x0926, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Via_86C926 },
+	{ 0x10bd, 0x0e34, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_SureCom_NE34 },
+	{ 0x1050, 0x5a5a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Winbond_W89C940F },
+	{ 0x12c3, 0x0058, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Holtek_HT80232 },
+	{ 0x12c3, 0x5598, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Holtek_HT80229 },
+	{ 0x8c4a, 0x1980, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Winbond_89C940_8c4a },
+	{ 0, }
+};
+
+MODULE_DEVICE_TABLE(pci, ne2k_pci_tbl);
+
+
+/* ---- No user-serviceable parts below ---- */
+
+#define NE_BASE	 (dev->base_addr)
+#define NE_CMD		0x00
+#define NE_DATAPORT	0x10	/* NatSemi-defined port window offset. */
+#define NE_RESET	0x1f	/* Issue a read to reset, a write to clear. */
+#define NE_IO_EXTENT	0x20
+
+#define NESM_START_PG	0x40	/* First page of TX buffer */
+#define NESM_STOP_PG	0x80	/* Last page +1 of RX ring */
+
+
+static int ne2k_pci_open(struct net_device *dev);
+static int ne2k_pci_close(struct net_device *dev);
+
+static void ne2k_pci_reset_8390(struct net_device *dev);
+static void ne2k_pci_get_8390_hdr(struct net_device *dev,
+				  struct e8390_pkt_hdr *hdr, int ring_page);
+static void ne2k_pci_block_input(struct net_device *dev, int count,
+				 struct sk_buff *skb, int ring_offset);
+static void ne2k_pci_block_output(struct net_device *dev, const int count,
+				  const unsigned char *buf,
+				  const int start_page);
+static const struct ethtool_ops ne2k_pci_ethtool_ops;
+
+
+
+/* There is no room in the standard 8390 structure for extra info we need,
+ * so we build a meta/outer-wrapper structure..
+ */
+struct ne2k_pci_card {
+	struct net_device *dev;
+	struct pci_dev *pci_dev;
+};
+
+
+
+/* NEx000-clone boards have a Station Address (SA) PROM (SAPROM) in the packet
+ * buffer memory space.  By-the-spec NE2000 clones have 0x57,0x57 in bytes
+ * 0x0e,0x0f of the SAPROM, while other supposed NE2000 clones must be
+ * detected by their SA prefix.
+ *
+ * Reading the SAPROM from a word-wide card with the 8390 set in byte-wide
+ * mode results in doubled values, which can be detected and compensated for.
+ *
+ * The probe is also responsible for initializing the card and filling
+ * in the 'dev' and 'ei_status' structures.
+ */
+
+static const struct net_device_ops ne2k_netdev_ops = {
+	.ndo_open		= ne2k_pci_open,
+	.ndo_stop		= ne2k_pci_close,
+	.ndo_start_xmit		= ei_start_xmit,
+	.ndo_tx_timeout		= ei_tx_timeout,
+	.ndo_get_stats		= ei_get_stats,
+	.ndo_set_rx_mode	= ei_set_multicast_list,
+	.ndo_validate_addr	= eth_validate_addr,
+	.ndo_set_mac_address	= eth_mac_addr,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	.ndo_poll_controller = ei_poll,
+#endif
+};
+
+static int ne2k_pci_init_one(struct pci_dev *pdev,
+			     const struct pci_device_id *ent)
+{
+	struct net_device *dev;
+	int i;
+	unsigned char SA_prom[32];
+	int start_page, stop_page;
+	int irq, reg0, chip_idx = ent->driver_data;
+	static unsigned int fnd_cnt;
+	long ioaddr;
+	int flags = pci_clone_list[chip_idx].flags;
+	struct ei_device *ei_local;
+
+	fnd_cnt++;
+
+	i = pci_enable_device(pdev);
+	if (i)
+		return i;
+
+	ioaddr = pci_resource_start(pdev, 0);
+	irq = pdev->irq;
+
+	if (!ioaddr || ((pci_resource_flags(pdev, 0) & IORESOURCE_IO) == 0)) {
+		dev_err(&pdev->dev, "no I/O resource at PCI BAR #0\n");
+		goto err_out;
+	}
+
+	if (!request_region(ioaddr, NE_IO_EXTENT, DRV_NAME)) {
+		dev_err(&pdev->dev, "I/O resource 0x%x @ 0x%lx busy\n",
+			NE_IO_EXTENT, ioaddr);
+		goto err_out;
+	}
+
+	reg0 = inb(ioaddr);
+	if (reg0 == 0xFF)
+		goto err_out_free_res;
+
+	/* Do a preliminary verification that we have a 8390. */
+	{
+		int regd;
+
+		outb(E8390_NODMA + E8390_PAGE1 + E8390_STOP, ioaddr + E8390_CMD);
+		regd = inb(ioaddr + 0x0d);
+		outb(0xff, ioaddr + 0x0d);
+		outb(E8390_NODMA + E8390_PAGE0, ioaddr + E8390_CMD);
+		/* Clear the counter by reading. */
+		inb(ioaddr + EN0_COUNTER0);
+		if (inb(ioaddr + EN0_COUNTER0) != 0) {
+			outb(reg0, ioaddr);
+			/*  Restore the old values. */
+			outb(regd, ioaddr + 0x0d);
+			goto err_out_free_res;
+		}
+	}
+
+	/* Allocate net_device, dev->priv; fill in 8390 specific dev fields. */
+	dev = alloc_ei_netdev();
+	if (!dev) {
+		dev_err(&pdev->dev, "cannot allocate ethernet device\n");
+		goto err_out_free_res;
+	}
+	dev->netdev_ops = &ne2k_netdev_ops;
+	ei_local = netdev_priv(dev);
+	ei_local->msg_enable = netif_msg_init(ne2k_msg_enable, default_msg_level);
+
+	SET_NETDEV_DEV(dev, &pdev->dev);
+
+	/* Reset card. Who knows what dain-bramaged state it was left in. */
+	{
+		unsigned long reset_start_time = jiffies;
+
+		outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);
+
+		/* This looks like a horrible timing loop, but it should never
+		 * take more than a few cycles.
+		 */
+		while ((inb(ioaddr + EN0_ISR) & ENISR_RESET) == 0)
+			/* Limit wait: '2' avoids jiffy roll-over. */
+			if (jiffies - reset_start_time > 2) {
+				dev_err(&pdev->dev,
+					"Card failure (no reset ack).\n");
+				goto err_out_free_netdev;
+			}
+		/* Ack all intr. */
+		outb(0xff, ioaddr + EN0_ISR);
+	}
+
+	/* Read the 16 bytes of station address PROM.
+	 * We must first initialize registers, similar
+	 * to NS8390_init(eifdev, 0).
+	 * We can't reliably read the SAPROM address without this.
+	 * (I learned the hard way!).
+	 */
+	{
+		struct {unsigned char value, offset; } program_seq[] = {
+			/* Select page 0 */
+			{E8390_NODMA + E8390_PAGE0 + E8390_STOP, E8390_CMD},
+			/* Set word-wide access */
+			{0x49,	EN0_DCFG},
+			/* Clear the count regs. */
+			{0x00,	EN0_RCNTLO},
+			/* Mask completion IRQ */
+			{0x00,	EN0_RCNTHI},
+			{0x00,	EN0_IMR},
+			{0xFF,	EN0_ISR},
+			/* 0x20 Set to monitor */
+			{E8390_RXOFF, EN0_RXCR},
+			/* 0x02 and loopback mode */
+			{E8390_TXOFF, EN0_TXCR},
+			{32,	EN0_RCNTLO},
+			{0x00,	EN0_RCNTHI},
+			/* DMA starting at 0x0000 */
+			{0x00,	EN0_RSARLO},
+			{0x00,	EN0_RSARHI},
+			{E8390_RREAD+E8390_START, E8390_CMD},
+		};
+		for (i = 0; i < ARRAY_SIZE(program_seq); i++)
+			outb(program_seq[i].value,
+			     ioaddr + program_seq[i].offset);
+
+	}
+
+	/* Note: all PCI cards have at least 16 bit access, so we don't have
+	 * to check for 8 bit cards.  Most cards permit 32 bit access.
+	 */
+	if (flags & ONLY_32BIT_IO) {
+		for (i = 0; i < 4 ; i++)
+			((u32 *)SA_prom)[i] = le32_to_cpu(inl(ioaddr + NE_DATAPORT));
+	} else
+		for (i = 0; i < 32 /* sizeof(SA_prom )*/; i++)
+			SA_prom[i] = inb(ioaddr + NE_DATAPORT);
+
+	/* We always set the 8390 registers for word mode. */
+	outb(0x49, ioaddr + EN0_DCFG);
+	start_page = NESM_START_PG;
+
+	stop_page = flags & STOP_PG_0x60 ? 0x60 : NESM_STOP_PG;
+
+	/* Set up the rest of the parameters. */
+	dev->irq = irq;
+	dev->base_addr = ioaddr;
+	pci_set_drvdata(pdev, dev);
+
+	ei_status.name = pci_clone_list[chip_idx].name;
+	ei_status.tx_start_page = start_page;
+	ei_status.stop_page = stop_page;
+	ei_status.word16 = 1;
+	ei_status.ne2k_flags = flags;
+	if (fnd_cnt < MAX_UNITS) {
+		if (full_duplex[fnd_cnt] > 0 || (options[fnd_cnt] & FORCE_FDX))
+			ei_status.ne2k_flags |= FORCE_FDX;
+	}
+
+	ei_status.rx_start_page = start_page + TX_PAGES;
+#ifdef PACKETBUF_MEMSIZE
+	/* Allow the packet buffer size to be overridden by know-it-alls. */
+	ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
+#endif
+
+	ei_status.reset_8390 = &ne2k_pci_reset_8390;
+	ei_status.block_input = &ne2k_pci_block_input;
+	ei_status.block_output = &ne2k_pci_block_output;
+	ei_status.get_8390_hdr = &ne2k_pci_get_8390_hdr;
+	ei_status.priv = (unsigned long) pdev;
+
+	dev->ethtool_ops = &ne2k_pci_ethtool_ops;
+	NS8390_init(dev, 0);
+
+	eth_hw_addr_set(dev, SA_prom);
+
+	i = register_netdev(dev);
+	if (i)
+		goto err_out_free_netdev;
+
+	netdev_info(dev, "%s found at %#lx, IRQ %d, %pM.\n",
+		    pci_clone_list[chip_idx].name, ioaddr, dev->irq,
+		    dev->dev_addr);
+
+	return 0;
+
+err_out_free_netdev:
+	free_netdev(dev);
+err_out_free_res:
+	release_region(ioaddr, NE_IO_EXTENT);
+err_out:
+	pci_disable_device(pdev);
+	return -ENODEV;
+}
+
+/* Magic incantation sequence for full duplex on the supported cards.
+ */
+static inline int set_realtek_fdx(struct net_device *dev)
+{
+	long ioaddr = dev->base_addr;
+
+	outb(0xC0 + E8390_NODMA, ioaddr + NE_CMD); /* Page 3 */
+	outb(0xC0, ioaddr + 0x01); /* Enable writes to CONFIG3 */
+	outb(0x40, ioaddr + 0x06); /* Enable full duplex */
+	outb(0x00, ioaddr + 0x01); /* Disable writes to CONFIG3 */
+	outb(E8390_PAGE0 + E8390_NODMA, ioaddr + NE_CMD); /* Page 0 */
+	return 0;
+}
+
+static inline int set_holtek_fdx(struct net_device *dev)
+{
+	long ioaddr = dev->base_addr;
+
+	outb(inb(ioaddr + 0x20) | 0x80, ioaddr + 0x20);
+	return 0;
+}
+
+static int ne2k_pci_set_fdx(struct net_device *dev)
+{
+	if (ei_status.ne2k_flags & REALTEK_FDX)
+		return set_realtek_fdx(dev);
+	else if (ei_status.ne2k_flags & HOLTEK_FDX)
+		return set_holtek_fdx(dev);
+
+	return -EOPNOTSUPP;
+}
+
+static int ne2k_pci_open(struct net_device *dev)
+{
+	int ret = request_irq(dev->irq, ei_interrupt, IRQF_SHARED,
+			      dev->name, dev);
+
+	if (ret)
+		return ret;
+
+	if (ei_status.ne2k_flags & FORCE_FDX)
+		ne2k_pci_set_fdx(dev);
+
+	ei_open(dev);
+	return 0;
+}
+
+static int ne2k_pci_close(struct net_device *dev)
+{
+	ei_close(dev);
+	free_irq(dev->irq, dev);
+	return 0;
+}
+
+/* Hard reset the card.  This used to pause for the same period that a
+ * 8390 reset command required, but that shouldn't be necessary.
+ */
+static void ne2k_pci_reset_8390(struct net_device *dev)
+{
+	unsigned long reset_start_time = jiffies;
+	struct ei_device *ei_local = netdev_priv(dev);
+
+	netif_dbg(ei_local, hw, dev, "resetting the 8390 t=%ld...\n",
+		  jiffies);
+
+	outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
+
+	ei_status.txing = 0;
+	ei_status.dmaing = 0;
+
+	/* This check _should_not_ be necessary, omit eventually. */
+	while ((inb(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
+		if (jiffies - reset_start_time > 2) {
+			netdev_err(dev, "%s did not complete.\n", __func__);
+			break;
+		}
+	/* Ack intr. */
+	outb(ENISR_RESET, NE_BASE + EN0_ISR);
+}
+
+/* Grab the 8390 specific header. Similar to the block_input routine, but
+ * we don't need to be concerned with ring wrap as the header will be at
+ * the start of a page, so we optimize accordingly.
+ */
+
+static void ne2k_pci_get_8390_hdr(struct net_device *dev,
+				  struct e8390_pkt_hdr *hdr, int ring_page)
+{
+
+	long nic_base = dev->base_addr;
+
+	/* This *shouldn't* happen. If it does, it's the last thing you'll see
+	 */
+	if (ei_status.dmaing) {
+		netdev_err(dev, "DMAing conflict in %s [DMAstat:%d][irqlock:%d].\n",
+			   __func__, ei_status.dmaing, ei_status.irqlock);
+		return;
+	}
+
+	ei_status.dmaing |= 0x01;
+	outb(E8390_NODMA + E8390_PAGE0 + E8390_START, nic_base + NE_CMD);
+	outb(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
+	outb(0, nic_base + EN0_RCNTHI);
+	outb(0, nic_base + EN0_RSARLO);		/* On page boundary */
+	outb(ring_page, nic_base + EN0_RSARHI);
+	outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
+
+	if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
+		insw(NE_BASE + NE_DATAPORT, hdr,
+		     sizeof(struct e8390_pkt_hdr) >> 1);
+	} else {
+		*(u32 *)hdr = le32_to_cpu(inl(NE_BASE + NE_DATAPORT));
+		le16_to_cpus(&hdr->count);
+	}
+	/* Ack intr. */
+	outb(ENISR_RDC, nic_base + EN0_ISR);
+	ei_status.dmaing &= ~0x01;
+}
+
+/* Block input and output, similar to the Crynwr packet driver.  If you
+ *are porting to a new ethercard, look at the packet driver source for hints.
+ *The NEx000 doesn't share the on-board packet memory -- you have to put
+ *the packet out through the "remote DMA" dataport using outb.
+ */
+
+static void ne2k_pci_block_input(struct net_device *dev, int count,
+				 struct sk_buff *skb, int ring_offset)
+{
+	long nic_base = dev->base_addr;
+	char *buf = skb->data;
+
+	/* This *shouldn't* happen.
+	 * If it does, it's the last thing you'll see.
+	 */
+	if (ei_status.dmaing) {
+		netdev_err(dev, "DMAing conflict in %s [DMAstat:%d][irqlock:%d]\n",
+			   __func__, ei_status.dmaing, ei_status.irqlock);
+		return;
+	}
+	ei_status.dmaing |= 0x01;
+	if (ei_status.ne2k_flags & ONLY_32BIT_IO)
+		count = (count + 3) & 0xFFFC;
+	outb(E8390_NODMA + E8390_PAGE0 + E8390_START, nic_base + NE_CMD);
+	outb(count & 0xff, nic_base + EN0_RCNTLO);
+	outb(count >> 8, nic_base + EN0_RCNTHI);
+	outb(ring_offset & 0xff, nic_base + EN0_RSARLO);
+	outb(ring_offset >> 8, nic_base + EN0_RSARHI);
+	outb(E8390_RREAD + E8390_START, nic_base + NE_CMD);
+
+	if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
+		insw(NE_BASE + NE_DATAPORT, buf, count >> 1);
+		if (count & 0x01)
+			buf[count-1] = inb(NE_BASE + NE_DATAPORT);
+	} else {
+		insl(NE_BASE + NE_DATAPORT, buf, count >> 2);
+		if (count & 3) {
+			buf += count & ~3;
+			if (count & 2) {
+				__le16 *b = (__le16 *)buf;
+
+				*b++ = cpu_to_le16(inw(NE_BASE + NE_DATAPORT));
+				buf = (char *)b;
+			}
+			if (count & 1)
+				*buf = inb(NE_BASE + NE_DATAPORT);
+		}
+	}
+	/* Ack intr. */
+	outb(ENISR_RDC, nic_base + EN0_ISR);
+	ei_status.dmaing &= ~0x01;
+}
+
+static void ne2k_pci_block_output(struct net_device *dev, int count,
+		const unsigned char *buf, const int start_page)
+{
+	long nic_base = NE_BASE;
+	unsigned long dma_start;
+
+	/* On little-endian it's always safe to round the count up for
+	 * word writes.
+	 */
+	if (ei_status.ne2k_flags & ONLY_32BIT_IO)
+		count = (count + 3) & 0xFFFC;
+	else
+		if (count & 0x01)
+			count++;
+
+	/* This *shouldn't* happen.
+	 * If it does, it's the last thing you'll see.
+	 */
+	if (ei_status.dmaing) {
+		netdev_err(dev, "DMAing conflict in %s [DMAstat:%d][irqlock:%d]\n",
+			   __func__, ei_status.dmaing, ei_status.irqlock);
+		return;
+	}
+	ei_status.dmaing |= 0x01;
+	/* We should already be in page 0, but to be safe... */
+	outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
+
+#ifdef NE_RW_BUGFIX
+	/* Handle the read-before-write bug the same way as the
+	 * Crynwr packet driver -- the NatSemi method doesn't work.
+	 * Actually this doesn't always work either, but if you have
+	 * problems with your NEx000 this is better than nothing!
+	 */
+	outb(0x42, nic_base + EN0_RCNTLO);
+	outb(0x00, nic_base + EN0_RCNTHI);
+	outb(0x42, nic_base + EN0_RSARLO);
+	outb(0x00, nic_base + EN0_RSARHI);
+	outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
+#endif
+	outb(ENISR_RDC, nic_base + EN0_ISR);
+
+	/* Now the normal output. */
+	outb(count & 0xff, nic_base + EN0_RCNTLO);
+	outb(count >> 8,   nic_base + EN0_RCNTHI);
+	outb(0x00, nic_base + EN0_RSARLO);
+	outb(start_page, nic_base + EN0_RSARHI);
+	outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
+	if (ei_status.ne2k_flags & ONLY_16BIT_IO) {
+		outsw(NE_BASE + NE_DATAPORT, buf, count >> 1);
+	} else {
+		outsl(NE_BASE + NE_DATAPORT, buf, count >> 2);
+		if (count & 3) {
+			buf += count & ~3;
+			if (count & 2) {
+				__le16 *b = (__le16 *)buf;
+
+				outw(le16_to_cpu(*b++), NE_BASE + NE_DATAPORT);
+				buf = (char *)b;
+			}
+		}
+	}
+
+	dma_start = jiffies;
+
+	while ((inb(nic_base + EN0_ISR) & ENISR_RDC) == 0)
+		/* Avoid clock roll-over. */
+		if (jiffies - dma_start > 2) {
+			netdev_warn(dev, "timeout waiting for Tx RDC.\n");
+			ne2k_pci_reset_8390(dev);
+			NS8390_init(dev, 1);
+			break;
+		}
+	/* Ack intr. */
+	outb(ENISR_RDC, nic_base + EN0_ISR);
+	ei_status.dmaing &= ~0x01;
+}
+
+static void ne2k_pci_get_drvinfo(struct net_device *dev,
+				 struct ethtool_drvinfo *info)
+{
+	struct ei_device *ei = netdev_priv(dev);
+	struct pci_dev *pci_dev = (struct pci_dev *) ei->priv;
+
+	strscpy(info->driver, DRV_NAME, sizeof(info->driver));
+	strscpy(info->version, DRV_VERSION, sizeof(info->version));
+	strscpy(info->bus_info, pci_name(pci_dev), sizeof(info->bus_info));
+}
+
+static u32 ne2k_pci_get_msglevel(struct net_device *dev)
+{
+	struct ei_device *ei_local = netdev_priv(dev);
+
+	return ei_local->msg_enable;
+}
+
+static void ne2k_pci_set_msglevel(struct net_device *dev, u32 v)
+{
+	struct ei_device *ei_local = netdev_priv(dev);
+
+	ei_local->msg_enable = v;
+}
+
+static const struct ethtool_ops ne2k_pci_ethtool_ops = {
+	.get_drvinfo		= ne2k_pci_get_drvinfo,
+	.get_msglevel		= ne2k_pci_get_msglevel,
+	.set_msglevel		= ne2k_pci_set_msglevel,
+};
+
+static void ne2k_pci_remove_one(struct pci_dev *pdev)
+{
+	struct net_device *dev = pci_get_drvdata(pdev);
+
+	BUG_ON(!dev);
+	unregister_netdev(dev);
+	release_region(dev->base_addr, NE_IO_EXTENT);
+	free_netdev(dev);
+	pci_disable_device(pdev);
+}
+
+static int __maybe_unused ne2k_pci_suspend(struct device *dev_d)
+{
+	struct net_device *dev = dev_get_drvdata(dev_d);
+
+	netif_device_detach(dev);
+
+	return 0;
+}
+
+static int __maybe_unused ne2k_pci_resume(struct device *dev_d)
+{
+	struct net_device *dev = dev_get_drvdata(dev_d);
+
+	NS8390_init(dev, 1);
+	netif_device_attach(dev);
+
+	return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(ne2k_pci_pm_ops, ne2k_pci_suspend, ne2k_pci_resume);
+
+static struct pci_driver ne2k_driver = {
+	.name		= DRV_NAME,
+	.probe		= ne2k_pci_init_one,
+	.remove		= ne2k_pci_remove_one,
+	.id_table	= ne2k_pci_tbl,
+	.driver.pm	= &ne2k_pci_pm_ops,
+};
+module_pci_driver(ne2k_driver);