amd: Move AMD (Lance) chipset drivers

Moves the drivers for the AMD chipsets into drivers/net/ethernet/amd/
and the necessary Kconfig and Makfile changes.

The au1000 (Alchemy) driver was also moved into the same directory
even though it is not a "Lance" driver.

CC: Peter Maydell <pmaydell@chiark.greenend.org.uk>
CC: Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de>
CC: "Maciej W. Rozycki" <macro@linux-mips.org>
CC: Donald Becker <becker@scyld.com>
CC: Sam Creasey <sammy@users.qual.net>
CC: Miguel de Icaza <miguel@nuclecu.unam.mx>
CC: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
CC: Don Fry <pcnet32@frontier.com>
CC: Geert Uytterhoeven <geert@linux-m68k.org>
CC: Russell King <linux@arm.linux.org.uk>
CC: David Davies <davies@maniac.ultranet.com>
CC: "M.Hipp" <hippm@informatik.uni-tuebingen.de>
CC: Pete Popov <ppopov@embeddedalley.com>
CC: David Hinds <dahinds@users.sourceforge.net>
CC: "Roger C. Pao" <rpao@paonet.org>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 2937 insertions, 0 deletions

diff --git a/drivers/net/ethernet/amd/pcnet32.c b/drivers/net/ethernet/amd/pcnet32.c
new file mode 100644
index 000000000000..8b3090dc4bcd
--- /dev/null
+++ b/drivers/net/ethernet/amd/pcnet32.c
@@ -0,0 +1,2937 @@
+/* pcnet32.c: An AMD PCnet32 ethernet driver for linux. */
+/*
+ *	Copyright 1996-1999 Thomas Bogendoerfer
+ *
+ *	Derived from the lance driver written 1993,1994,1995 by Donald Becker.
+ *
+ *	Copyright 1993 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, incorporated herein by reference.
+ *
+ *	This driver is for PCnet32 and PCnetPCI based ethercards
+ */
+/**************************************************************************
+ *  23 Oct, 2000.
+ *  Fixed a few bugs, related to running the controller in 32bit mode.
+ *
+ *  Carsten Langgaard, carstenl@mips.com
+ *  Copyright (C) 2000 MIPS Technologies, Inc.  All rights reserved.
+ *
+ *************************************************************************/
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#define DRV_NAME	"pcnet32"
+#define DRV_VERSION	"1.35"
+#define DRV_RELDATE	"21.Apr.2008"
+#define PFX		DRV_NAME ": "
+
+static const char *const version =
+    DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " tsbogend@alpha.franken.de\n";
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/string.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/ethtool.h>
+#include <linux/mii.h>
+#include <linux/crc32.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/if_ether.h>
+#include <linux/skbuff.h>
+#include <linux/spinlock.h>
+#include <linux/moduleparam.h>
+#include <linux/bitops.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
+
+#include <asm/dma.h>
+#include <asm/irq.h>
+
+/*
+ * PCI device identifiers for "new style" Linux PCI Device Drivers
+ */
+static DEFINE_PCI_DEVICE_TABLE(pcnet32_pci_tbl) = {
+	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LANCE_HOME), },
+	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LANCE), },
+
+	/*
+	 * Adapters that were sold with IBM's RS/6000 or pSeries hardware have
+	 * the incorrect vendor id.
+	 */
+	{ PCI_DEVICE(PCI_VENDOR_ID_TRIDENT, PCI_DEVICE_ID_AMD_LANCE),
+	  .class = (PCI_CLASS_NETWORK_ETHERNET << 8), .class_mask = 0xffff00, },
+
+	{ }	/* terminate list */
+};
+
+MODULE_DEVICE_TABLE(pci, pcnet32_pci_tbl);
+
+static int cards_found;
+
+/*
+ * VLB I/O addresses
+ */
+static unsigned int pcnet32_portlist[] __initdata =
+    { 0x300, 0x320, 0x340, 0x360, 0 };
+
+static int pcnet32_debug;
+static int tx_start = 1;	/* Mapping -- 0:20, 1:64, 2:128, 3:~220 (depends on chip vers) */
+static int pcnet32vlb;		/* check for VLB cards ? */
+
+static struct net_device *pcnet32_dev;
+
+static int max_interrupt_work = 2;
+static int rx_copybreak = 200;
+
+#define PCNET32_PORT_AUI      0x00
+#define PCNET32_PORT_10BT     0x01
+#define PCNET32_PORT_GPSI     0x02
+#define PCNET32_PORT_MII      0x03
+
+#define PCNET32_PORT_PORTSEL  0x03
+#define PCNET32_PORT_ASEL     0x04
+#define PCNET32_PORT_100      0x40
+#define PCNET32_PORT_FD	      0x80
+
+#define PCNET32_DMA_MASK 0xffffffff
+
+#define PCNET32_WATCHDOG_TIMEOUT (jiffies + (2 * HZ))
+#define PCNET32_BLINK_TIMEOUT	(jiffies + (HZ/4))
+
+/*
+ * table to translate option values from tulip
+ * to internal options
+ */
+static const unsigned char options_mapping[] = {
+	PCNET32_PORT_ASEL,			/*  0 Auto-select      */
+	PCNET32_PORT_AUI,			/*  1 BNC/AUI          */
+	PCNET32_PORT_AUI,			/*  2 AUI/BNC          */
+	PCNET32_PORT_ASEL,			/*  3 not supported    */
+	PCNET32_PORT_10BT | PCNET32_PORT_FD,	/*  4 10baseT-FD       */
+	PCNET32_PORT_ASEL,			/*  5 not supported    */
+	PCNET32_PORT_ASEL,			/*  6 not supported    */
+	PCNET32_PORT_ASEL,			/*  7 not supported    */
+	PCNET32_PORT_ASEL,			/*  8 not supported    */
+	PCNET32_PORT_MII,			/*  9 MII 10baseT      */
+	PCNET32_PORT_MII | PCNET32_PORT_FD,	/* 10 MII 10baseT-FD   */
+	PCNET32_PORT_MII,			/* 11 MII (autosel)    */
+	PCNET32_PORT_10BT,			/* 12 10BaseT          */
+	PCNET32_PORT_MII | PCNET32_PORT_100,	/* 13 MII 100BaseTx    */
+						/* 14 MII 100BaseTx-FD */
+	PCNET32_PORT_MII | PCNET32_PORT_100 | PCNET32_PORT_FD,
+	PCNET32_PORT_ASEL			/* 15 not supported    */
+};
+
+static const char pcnet32_gstrings_test[][ETH_GSTRING_LEN] = {
+	"Loopback test  (offline)"
+};
+
+#define PCNET32_TEST_LEN	ARRAY_SIZE(pcnet32_gstrings_test)
+
+#define PCNET32_NUM_REGS 136
+
+#define MAX_UNITS 8		/* More are supported, limit only on options */
+static int options[MAX_UNITS];
+static int full_duplex[MAX_UNITS];
+static int homepna[MAX_UNITS];
+
+/*
+ *				Theory of Operation
+ *
+ * This driver uses the same software structure as the normal lance
+ * driver. So look for a verbose description in lance.c. The differences
+ * to the normal lance driver is the use of the 32bit mode of PCnet32
+ * and PCnetPCI chips. Because these chips are 32bit chips, there is no
+ * 16MB limitation and we don't need bounce buffers.
+ */
+
+/*
+ * Set the number of Tx and Rx buffers, using Log_2(# buffers).
+ * Reasonable default values are 4 Tx buffers, and 16 Rx buffers.
+ * That translates to 2 (4 == 2^^2) and 4 (16 == 2^^4).
+ */
+#ifndef PCNET32_LOG_TX_BUFFERS
+#define PCNET32_LOG_TX_BUFFERS		4
+#define PCNET32_LOG_RX_BUFFERS		5
+#define PCNET32_LOG_MAX_TX_BUFFERS	9	/* 2^9 == 512 */
+#define PCNET32_LOG_MAX_RX_BUFFERS	9
+#endif
+
+#define TX_RING_SIZE		(1 << (PCNET32_LOG_TX_BUFFERS))
+#define TX_MAX_RING_SIZE	(1 << (PCNET32_LOG_MAX_TX_BUFFERS))
+
+#define RX_RING_SIZE		(1 << (PCNET32_LOG_RX_BUFFERS))
+#define RX_MAX_RING_SIZE	(1 << (PCNET32_LOG_MAX_RX_BUFFERS))
+
+#define PKT_BUF_SKB		1544
+/* actual buffer length after being aligned */
+#define PKT_BUF_SIZE		(PKT_BUF_SKB - NET_IP_ALIGN)
+/* chip wants twos complement of the (aligned) buffer length */
+#define NEG_BUF_SIZE		(NET_IP_ALIGN - PKT_BUF_SKB)
+
+/* Offsets from base I/O address. */
+#define PCNET32_WIO_RDP		0x10
+#define PCNET32_WIO_RAP		0x12
+#define PCNET32_WIO_RESET	0x14
+#define PCNET32_WIO_BDP		0x16
+
+#define PCNET32_DWIO_RDP	0x10
+#define PCNET32_DWIO_RAP	0x14
+#define PCNET32_DWIO_RESET	0x18
+#define PCNET32_DWIO_BDP	0x1C
+
+#define PCNET32_TOTAL_SIZE	0x20
+
+#define CSR0		0
+#define CSR0_INIT	0x1
+#define CSR0_START	0x2
+#define CSR0_STOP	0x4
+#define CSR0_TXPOLL	0x8
+#define CSR0_INTEN	0x40
+#define CSR0_IDON	0x0100
+#define CSR0_NORMAL	(CSR0_START | CSR0_INTEN)
+#define PCNET32_INIT_LOW	1
+#define PCNET32_INIT_HIGH	2
+#define CSR3		3
+#define CSR4		4
+#define CSR5		5
+#define CSR5_SUSPEND	0x0001
+#define CSR15		15
+#define PCNET32_MC_FILTER	8
+
+#define PCNET32_79C970A	0x2621
+
+/* The PCNET32 Rx and Tx ring descriptors. */
+struct pcnet32_rx_head {
+	__le32	base;
+	__le16	buf_length;	/* two`s complement of length */
+	__le16	status;
+	__le32	msg_length;
+	__le32	reserved;
+};
+
+struct pcnet32_tx_head {
+	__le32	base;
+	__le16	length;		/* two`s complement of length */
+	__le16	status;
+	__le32	misc;
+	__le32	reserved;
+};
+
+/* The PCNET32 32-Bit initialization block, described in databook. */
+struct pcnet32_init_block {
+	__le16	mode;
+	__le16	tlen_rlen;
+	u8	phys_addr[6];
+	__le16	reserved;
+	__le32	filter[2];
+	/* Receive and transmit ring base, along with extra bits. */
+	__le32	rx_ring;
+	__le32	tx_ring;
+};
+
+/* PCnet32 access functions */
+struct pcnet32_access {
+	u16	(*read_csr) (unsigned long, int);
+	void	(*write_csr) (unsigned long, int, u16);
+	u16	(*read_bcr) (unsigned long, int);
+	void	(*write_bcr) (unsigned long, int, u16);
+	u16	(*read_rap) (unsigned long);
+	void	(*write_rap) (unsigned long, u16);
+	void	(*reset) (unsigned long);
+};
+
+/*
+ * The first field of pcnet32_private is read by the ethernet device
+ * so the structure should be allocated using pci_alloc_consistent().
+ */
+struct pcnet32_private {
+	struct pcnet32_init_block *init_block;
+	/* The Tx and Rx ring entries must be aligned on 16-byte boundaries in 32bit mode. */
+	struct pcnet32_rx_head	*rx_ring;
+	struct pcnet32_tx_head	*tx_ring;
+	dma_addr_t		init_dma_addr;/* DMA address of beginning of the init block,
+				   returned by pci_alloc_consistent */
+	struct pci_dev		*pci_dev;
+	const char		*name;
+	/* The saved address of a sent-in-place packet/buffer, for skfree(). */
+	struct sk_buff		**tx_skbuff;
+	struct sk_buff		**rx_skbuff;
+	dma_addr_t		*tx_dma_addr;
+	dma_addr_t		*rx_dma_addr;
+	struct pcnet32_access	a;
+	spinlock_t		lock;		/* Guard lock */
+	unsigned int		cur_rx, cur_tx;	/* The next free ring entry */
+	unsigned int		rx_ring_size;	/* current rx ring size */
+	unsigned int		tx_ring_size;	/* current tx ring size */
+	unsigned int		rx_mod_mask;	/* rx ring modular mask */
+	unsigned int		tx_mod_mask;	/* tx ring modular mask */
+	unsigned short		rx_len_bits;
+	unsigned short		tx_len_bits;
+	dma_addr_t		rx_ring_dma_addr;
+	dma_addr_t		tx_ring_dma_addr;
+	unsigned int		dirty_rx,	/* ring entries to be freed. */
+				dirty_tx;
+
+	struct net_device	*dev;
+	struct napi_struct	napi;
+	char			tx_full;
+	char			phycount;	/* number of phys found */
+	int			options;
+	unsigned int		shared_irq:1,	/* shared irq possible */
+				dxsuflo:1,   /* disable transmit stop on uflo */
+				mii:1;		/* mii port available */
+	struct net_device	*next;
+	struct mii_if_info	mii_if;
+	struct timer_list	watchdog_timer;
+	u32			msg_enable;	/* debug message level */
+
+	/* each bit indicates an available PHY */
+	u32			phymask;
+	unsigned short		chip_version;	/* which variant this is */
+
+	/* saved registers during ethtool blink */
+	u16 			save_regs[4];
+};
+
+static int pcnet32_probe_pci(struct pci_dev *, const struct pci_device_id *);
+static int pcnet32_probe1(unsigned long, int, struct pci_dev *);
+static int pcnet32_open(struct net_device *);
+static int pcnet32_init_ring(struct net_device *);
+static netdev_tx_t pcnet32_start_xmit(struct sk_buff *,
+				      struct net_device *);
+static void pcnet32_tx_timeout(struct net_device *dev);
+static irqreturn_t pcnet32_interrupt(int, void *);
+static int pcnet32_close(struct net_device *);
+static struct net_device_stats *pcnet32_get_stats(struct net_device *);
+static void pcnet32_load_multicast(struct net_device *dev);
+static void pcnet32_set_multicast_list(struct net_device *);
+static int pcnet32_ioctl(struct net_device *, struct ifreq *, int);
+static void pcnet32_watchdog(struct net_device *);
+static int mdio_read(struct net_device *dev, int phy_id, int reg_num);
+static void mdio_write(struct net_device *dev, int phy_id, int reg_num,
+		       int val);
+static void pcnet32_restart(struct net_device *dev, unsigned int csr0_bits);
+static void pcnet32_ethtool_test(struct net_device *dev,
+				 struct ethtool_test *eth_test, u64 * data);
+static int pcnet32_loopback_test(struct net_device *dev, uint64_t * data1);
+static int pcnet32_get_regs_len(struct net_device *dev);
+static void pcnet32_get_regs(struct net_device *dev, struct ethtool_regs *regs,
+			     void *ptr);
+static void pcnet32_purge_tx_ring(struct net_device *dev);
+static int pcnet32_alloc_ring(struct net_device *dev, const char *name);
+static void pcnet32_free_ring(struct net_device *dev);
+static void pcnet32_check_media(struct net_device *dev, int verbose);
+
+static u16 pcnet32_wio_read_csr(unsigned long addr, int index)
+{
+	outw(index, addr + PCNET32_WIO_RAP);
+	return inw(addr + PCNET32_WIO_RDP);
+}
+
+static void pcnet32_wio_write_csr(unsigned long addr, int index, u16 val)
+{
+	outw(index, addr + PCNET32_WIO_RAP);
+	outw(val, addr + PCNET32_WIO_RDP);
+}
+
+static u16 pcnet32_wio_read_bcr(unsigned long addr, int index)
+{
+	outw(index, addr + PCNET32_WIO_RAP);
+	return inw(addr + PCNET32_WIO_BDP);
+}
+
+static void pcnet32_wio_write_bcr(unsigned long addr, int index, u16 val)
+{
+	outw(index, addr + PCNET32_WIO_RAP);
+	outw(val, addr + PCNET32_WIO_BDP);
+}
+
+static u16 pcnet32_wio_read_rap(unsigned long addr)
+{
+	return inw(addr + PCNET32_WIO_RAP);
+}
+
+static void pcnet32_wio_write_rap(unsigned long addr, u16 val)
+{
+	outw(val, addr + PCNET32_WIO_RAP);
+}
+
+static void pcnet32_wio_reset(unsigned long addr)
+{
+	inw(addr + PCNET32_WIO_RESET);
+}
+
+static int pcnet32_wio_check(unsigned long addr)
+{
+	outw(88, addr + PCNET32_WIO_RAP);
+	return inw(addr + PCNET32_WIO_RAP) == 88;
+}
+
+static struct pcnet32_access pcnet32_wio = {
+	.read_csr = pcnet32_wio_read_csr,
+	.write_csr = pcnet32_wio_write_csr,
+	.read_bcr = pcnet32_wio_read_bcr,
+	.write_bcr = pcnet32_wio_write_bcr,
+	.read_rap = pcnet32_wio_read_rap,
+	.write_rap = pcnet32_wio_write_rap,
+	.reset = pcnet32_wio_reset
+};
+
+static u16 pcnet32_dwio_read_csr(unsigned long addr, int index)
+{
+	outl(index, addr + PCNET32_DWIO_RAP);
+	return inl(addr + PCNET32_DWIO_RDP) & 0xffff;
+}
+
+static void pcnet32_dwio_write_csr(unsigned long addr, int index, u16 val)
+{
+	outl(index, addr + PCNET32_DWIO_RAP);
+	outl(val, addr + PCNET32_DWIO_RDP);
+}
+
+static u16 pcnet32_dwio_read_bcr(unsigned long addr, int index)
+{
+	outl(index, addr + PCNET32_DWIO_RAP);
+	return inl(addr + PCNET32_DWIO_BDP) & 0xffff;
+}
+
+static void pcnet32_dwio_write_bcr(unsigned long addr, int index, u16 val)
+{
+	outl(index, addr + PCNET32_DWIO_RAP);
+	outl(val, addr + PCNET32_DWIO_BDP);
+}
+
+static u16 pcnet32_dwio_read_rap(unsigned long addr)
+{
+	return inl(addr + PCNET32_DWIO_RAP) & 0xffff;
+}
+
+static void pcnet32_dwio_write_rap(unsigned long addr, u16 val)
+{
+	outl(val, addr + PCNET32_DWIO_RAP);
+}
+
+static void pcnet32_dwio_reset(unsigned long addr)
+{
+	inl(addr + PCNET32_DWIO_RESET);
+}
+
+static int pcnet32_dwio_check(unsigned long addr)
+{
+	outl(88, addr + PCNET32_DWIO_RAP);
+	return (inl(addr + PCNET32_DWIO_RAP) & 0xffff) == 88;
+}
+
+static struct pcnet32_access pcnet32_dwio = {
+	.read_csr = pcnet32_dwio_read_csr,
+	.write_csr = pcnet32_dwio_write_csr,
+	.read_bcr = pcnet32_dwio_read_bcr,
+	.write_bcr = pcnet32_dwio_write_bcr,
+	.read_rap = pcnet32_dwio_read_rap,
+	.write_rap = pcnet32_dwio_write_rap,
+	.reset = pcnet32_dwio_reset
+};
+
+static void pcnet32_netif_stop(struct net_device *dev)
+{
+	struct pcnet32_private *lp = netdev_priv(dev);
+
+	dev->trans_start = jiffies; /* prevent tx timeout */
+	napi_disable(&lp->napi);
+	netif_tx_disable(dev);
+}
+
+static void pcnet32_netif_start(struct net_device *dev)
+{
+	struct pcnet32_private *lp = netdev_priv(dev);
+	ulong ioaddr = dev->base_addr;
+	u16 val;
+
+	netif_wake_queue(dev);
+	val = lp->a.read_csr(ioaddr, CSR3);
+	val &= 0x00ff;
+	lp->a.write_csr(ioaddr, CSR3, val);
+	napi_enable(&lp->napi);
+}
+
+/*
+ * Allocate space for the new sized tx ring.
+ * Free old resources
+ * Save new resources.
+ * Any failure keeps old resources.
+ * Must be called with lp->lock held.
+ */
+static void pcnet32_realloc_tx_ring(struct net_device *dev,
+				    struct pcnet32_private *lp,
+				    unsigned int size)
+{
+	dma_addr_t new_ring_dma_addr;
+	dma_addr_t *new_dma_addr_list;
+	struct pcnet32_tx_head *new_tx_ring;
+	struct sk_buff **new_skb_list;
+
+	pcnet32_purge_tx_ring(dev);
+
+	new_tx_ring = pci_alloc_consistent(lp->pci_dev,
+					   sizeof(struct pcnet32_tx_head) *
+					   (1 << size),
+					   &new_ring_dma_addr);
+	if (new_tx_ring == NULL) {
+		netif_err(lp, drv, dev, "Consistent memory allocation failed\n");
+		return;
+	}
+	memset(new_tx_ring, 0, sizeof(struct pcnet32_tx_head) * (1 << size));
+
+	new_dma_addr_list = kcalloc((1 << size), sizeof(dma_addr_t),
+				GFP_ATOMIC);
+	if (!new_dma_addr_list) {
+		netif_err(lp, drv, dev, "Memory allocation failed\n");
+		goto free_new_tx_ring;
+	}
+
+	new_skb_list = kcalloc((1 << size), sizeof(struct sk_buff *),
+				GFP_ATOMIC);
+	if (!new_skb_list) {
+		netif_err(lp, drv, dev, "Memory allocation failed\n");
+		goto free_new_lists;
+	}
+
+	kfree(lp->tx_skbuff);
+	kfree(lp->tx_dma_addr);
+	pci_free_consistent(lp->pci_dev,
+			    sizeof(struct pcnet32_tx_head) *
+			    lp->tx_ring_size, lp->tx_ring,
+			    lp->tx_ring_dma_addr);
+
+	lp->tx_ring_size = (1 << size);
+	lp->tx_mod_mask = lp->tx_ring_size - 1;
+	lp->tx_len_bits = (size << 12);
+	lp->tx_ring = new_tx_ring;
+	lp->tx_ring_dma_addr = new_ring_dma_addr;
+	lp->tx_dma_addr = new_dma_addr_list;
+	lp->tx_skbuff = new_skb_list;
+	return;
+
+free_new_lists:
+	kfree(new_dma_addr_list);
+free_new_tx_ring:
+	pci_free_consistent(lp->pci_dev,
+			    sizeof(struct pcnet32_tx_head) *
+			    (1 << size),
+			    new_tx_ring,
+			    new_ring_dma_addr);
+}
+
+/*
+ * Allocate space for the new sized rx ring.
+ * Re-use old receive buffers.
+ *   alloc extra buffers
+ *   free unneeded buffers
+ *   free unneeded buffers
+ * Save new resources.
+ * Any failure keeps old resources.
+ * Must be called with lp->lock held.
+ */
+static void pcnet32_realloc_rx_ring(struct net_device *dev,
+				    struct pcnet32_private *lp,
+				    unsigned int size)
+{
+	dma_addr_t new_ring_dma_addr;
+	dma_addr_t *new_dma_addr_list;
+	struct pcnet32_rx_head *new_rx_ring;
+	struct sk_buff **new_skb_list;
+	int new, overlap;
+
+	new_rx_ring = pci_alloc_consistent(lp->pci_dev,
+					   sizeof(struct pcnet32_rx_head) *
+					   (1 << size),
+					   &new_ring_dma_addr);
+	if (new_rx_ring == NULL) {
+		netif_err(lp, drv, dev, "Consistent memory allocation failed\n");
+		return;
+	}
+	memset(new_rx_ring, 0, sizeof(struct pcnet32_rx_head) * (1 << size));
+
+	new_dma_addr_list = kcalloc((1 << size), sizeof(dma_addr_t),
+				GFP_ATOMIC);
+	if (!new_dma_addr_list) {
+		netif_err(lp, drv, dev, "Memory allocation failed\n");
+		goto free_new_rx_ring;
+	}
+
+	new_skb_list = kcalloc((1 << size), sizeof(struct sk_buff *),
+				GFP_ATOMIC);
+	if (!new_skb_list) {
+		netif_err(lp, drv, dev, "Memory allocation failed\n");
+		goto free_new_lists;
+	}
+
+	/* first copy the current receive buffers */
+	overlap = min(size, lp->rx_ring_size);
+	for (new = 0; new < overlap; new++) {
+		new_rx_ring[new] = lp->rx_ring[new];
+		new_dma_addr_list[new] = lp->rx_dma_addr[new];
+		new_skb_list[new] = lp->rx_skbuff[new];
+	}
+	/* now allocate any new buffers needed */
+	for (; new < size; new++) {
+		struct sk_buff *rx_skbuff;
+		new_skb_list[new] = dev_alloc_skb(PKT_BUF_SKB);
+		rx_skbuff = new_skb_list[new];
+		if (!rx_skbuff) {
+			/* keep the original lists and buffers */
+			netif_err(lp, drv, dev, "%s dev_alloc_skb failed\n",
+				  __func__);
+			goto free_all_new;
+		}
+		skb_reserve(rx_skbuff, NET_IP_ALIGN);
+
+		new_dma_addr_list[new] =
+			    pci_map_single(lp->pci_dev, rx_skbuff->data,
+					   PKT_BUF_SIZE, PCI_DMA_FROMDEVICE);
+		new_rx_ring[new].base = cpu_to_le32(new_dma_addr_list[new]);
+		new_rx_ring[new].buf_length = cpu_to_le16(NEG_BUF_SIZE);
+		new_rx_ring[new].status = cpu_to_le16(0x8000);
+	}
+	/* and free any unneeded buffers */
+	for (; new < lp->rx_ring_size; new++) {
+		if (lp->rx_skbuff[new]) {
+			pci_unmap_single(lp->pci_dev, lp->rx_dma_addr[new],
+					 PKT_BUF_SIZE, PCI_DMA_FROMDEVICE);
+			dev_kfree_skb(lp->rx_skbuff[new]);
+		}
+	}
+
+	kfree(lp->rx_skbuff);
+	kfree(lp->rx_dma_addr);
+	pci_free_consistent(lp->pci_dev,
+			    sizeof(struct pcnet32_rx_head) *
+			    lp->rx_ring_size, lp->rx_ring,
+			    lp->rx_ring_dma_addr);
+
+	lp->rx_ring_size = (1 << size);
+	lp->rx_mod_mask = lp->rx_ring_size - 1;
+	lp->rx_len_bits = (size << 4);
+	lp->rx_ring = new_rx_ring;
+	lp->rx_ring_dma_addr = new_ring_dma_addr;
+	lp->rx_dma_addr = new_dma_addr_list;
+	lp->rx_skbuff = new_skb_list;
+	return;
+
+free_all_new:
+	while (--new >= lp->rx_ring_size) {
+		if (new_skb_list[new]) {
+			pci_unmap_single(lp->pci_dev, new_dma_addr_list[new],
+					 PKT_BUF_SIZE, PCI_DMA_FROMDEVICE);
+			dev_kfree_skb(new_skb_list[new]);
+		}
+	}
+	kfree(new_skb_list);
+free_new_lists:
+	kfree(new_dma_addr_list);
+free_new_rx_ring:
+	pci_free_consistent(lp->pci_dev,
+			    sizeof(struct pcnet32_rx_head) *
+			    (1 << size),
+			    new_rx_ring,
+			    new_ring_dma_addr);
+}
+
+static void pcnet32_purge_rx_ring(struct net_device *dev)
+{
+	struct pcnet32_private *lp = netdev_priv(dev);
+	int i;
+
+	/* free all allocated skbuffs */
+	for (i = 0; i < lp->rx_ring_size; i++) {
+		lp->rx_ring[i].status = 0;	/* CPU owns buffer */
+		wmb();		/* Make sure adapter sees owner change */
+		if (lp->rx_skbuff[i]) {
+			pci_unmap_single(lp->pci_dev, lp->rx_dma_addr[i],
+					 PKT_BUF_SIZE, PCI_DMA_FROMDEVICE);
+			dev_kfree_skb_any(lp->rx_skbuff[i]);
+		}
+		lp->rx_skbuff[i] = NULL;
+		lp->rx_dma_addr[i] = 0;
+	}
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void pcnet32_poll_controller(struct net_device *dev)
+{
+	disable_irq(dev->irq);
+	pcnet32_interrupt(0, dev);
+	enable_irq(dev->irq);
+}
+#endif
+
+static int pcnet32_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+	struct pcnet32_private *lp = netdev_priv(dev);
+	unsigned long flags;
+	int r = -EOPNOTSUPP;
+
+	if (lp->mii) {
+		spin_lock_irqsave(&lp->lock, flags);
+		mii_ethtool_gset(&lp->mii_if, cmd);
+		spin_unlock_irqrestore(&lp->lock, flags);
+		r = 0;
+	}
+	return r;
+}
+
+static int pcnet32_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+	struct pcnet32_private *lp = netdev_priv(dev);
+	unsigned long flags;
+	int r = -EOPNOTSUPP;
+
+	if (lp->mii) {
+		spin_lock_irqsave(&lp->lock, flags);
+		r = mii_ethtool_sset(&lp->mii_if, cmd);
+		spin_unlock_irqrestore(&lp->lock, flags);
+	}
+	return r;
+}
+
+static void pcnet32_get_drvinfo(struct net_device *dev,
+				struct ethtool_drvinfo *info)
+{
+	struct pcnet32_private *lp = netdev_priv(dev);
+
+	strcpy(info->driver, DRV_NAME);
+	strcpy(info->version, DRV_VERSION);
+	if (lp->pci_dev)
+		strcpy(info->bus_info, pci_name(lp->pci_dev));
+	else
+		sprintf(info->bus_info, "VLB 0x%lx", dev->base_addr);
+}
+
+static u32 pcnet32_get_link(struct net_device *dev)
+{
+	struct pcnet32_private *lp = netdev_priv(dev);
+	unsigned long flags;
+	int r;
+
+	spin_lock_irqsave(&lp->lock, flags);
+	if (lp->mii) {
+		r = mii_link_ok(&lp->mii_if);
+	} else if (lp->chip_version >= PCNET32_79C970A) {
+		ulong ioaddr = dev->base_addr;	/* card base I/O address */
+		r = (lp->a.read_bcr(ioaddr, 4) != 0xc0);
+	} else {	/* can not detect link on really old chips */
+		r = 1;
+	}
+	spin_unlock_irqrestore(&lp->lock, flags);
+
+	return r;
+}
+
+static u32 pcnet32_get_msglevel(struct net_device *dev)
+{
+	struct pcnet32_private *lp = netdev_priv(dev);
+	return lp->msg_enable;
+}
+
+static void pcnet32_set_msglevel(struct net_device *dev, u32 value)
+{
+	struct pcnet32_private *lp = netdev_priv(dev);
+	lp->msg_enable = value;
+}
+
+static int pcnet32_nway_reset(struct net_device *dev)
+{
+	struct pcnet32_private *lp = netdev_priv(dev);
+	unsigned long flags;
+	int r = -EOPNOTSUPP;
+
+	if (lp->mii) {
+		spin_lock_irqsave(&lp->lock, flags);
+		r = mii_nway_restart(&lp->mii_if);
+		spin_unlock_irqrestore(&lp->lock, flags);
+	}
+	return r;
+}
+
+static void pcnet32_get_ringparam(struct net_device *dev,
+				  struct ethtool_ringparam *ering)
+{
+	struct pcnet32_private *lp = netdev_priv(dev);
+
+	ering->tx_max_pending = TX_MAX_RING_SIZE;
+	ering->tx_pending = lp->tx_ring_size;
+	ering->rx_max_pending = RX_MAX_RING_SIZE;
+	ering->rx_pending = lp->rx_ring_size;
+}
+
+static int pcnet32_set_ringparam(struct net_device *dev,
+				 struct ethtool_ringparam *ering)
+{
+	struct pcnet32_private *lp = netdev_priv(dev);
+	unsigned long flags;
+	unsigned int size;
+	ulong ioaddr = dev->base_addr;
+	int i;
+
+	if (ering->rx_mini_pending || ering->rx_jumbo_pending)
+		return -EINVAL;
+
+	if (netif_running(dev))
+		pcnet32_netif_stop(dev);
+
+	spin_lock_irqsave(&lp->lock, flags);
+	lp->a.write_csr(ioaddr, CSR0, CSR0_STOP);	/* stop the chip */
+
+	size = min(ering->tx_pending, (unsigned int)TX_MAX_RING_SIZE);
+
+	/* set the minimum ring size to 4, to allow the loopback test to work
+	 * unchanged.
+	 */
+	for (i = 2; i <= PCNET32_LOG_MAX_TX_BUFFERS; i++) {
+		if (size <= (1 << i))
+			break;
+	}
+	if ((1 << i) != lp->tx_ring_size)
+		pcnet32_realloc_tx_ring(dev, lp, i);
+
+	size = min(ering->rx_pending, (unsigned int)RX_MAX_RING_SIZE);
+	for (i = 2; i <= PCNET32_LOG_MAX_RX_BUFFERS; i++) {
+		if (size <= (1 << i))
+			break;
+	}
+	if ((1 << i) != lp->rx_ring_size)
+		pcnet32_realloc_rx_ring(dev, lp, i);
+
+	lp->napi.weight = lp->rx_ring_size / 2;
+
+	if (netif_running(dev)) {
+		pcnet32_netif_start(dev);
+		pcnet32_restart(dev, CSR0_NORMAL);
+	}
+
+	spin_unlock_irqrestore(&lp->lock, flags);
+
+	netif_info(lp, drv, dev, "Ring Param Settings: RX: %d, TX: %d\n",
+		   lp->rx_ring_size, lp->tx_ring_size);
+
+	return 0;
+}
+
+static void pcnet32_get_strings(struct net_device *dev, u32 stringset,
+				u8 *data)
+{
+	memcpy(data, pcnet32_gstrings_test, sizeof(pcnet32_gstrings_test));
+}
+
+static int pcnet32_get_sset_count(struct net_device *dev, int sset)
+{
+	switch (sset) {
+	case ETH_SS_TEST:
+		return PCNET32_TEST_LEN;
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static void pcnet32_ethtool_test(struct net_device *dev,
+				 struct ethtool_test *test, u64 * data)
+{
+	struct pcnet32_private *lp = netdev_priv(dev);
+	int rc;
+
+	if (test->flags == ETH_TEST_FL_OFFLINE) {
+		rc = pcnet32_loopback_test(dev, data);
+		if (rc) {
+			netif_printk(lp, hw, KERN_DEBUG, dev,
+				     "Loopback test failed\n");
+			test->flags |= ETH_TEST_FL_FAILED;
+		} else
+			netif_printk(lp, hw, KERN_DEBUG, dev,
+				     "Loopback test passed\n");
+	} else
+		netif_printk(lp, hw, KERN_DEBUG, dev,
+			     "No tests to run (specify 'Offline' on ethtool)\n");
+}				/* end pcnet32_ethtool_test */
+
+static int pcnet32_loopback_test(struct net_device *dev, uint64_t * data1)
+{
+	struct pcnet32_private *lp = netdev_priv(dev);
+	struct pcnet32_access *a = &lp->a;	/* access to registers */
+	ulong ioaddr = dev->base_addr;	/* card base I/O address */
+	struct sk_buff *skb;	/* sk buff */
+	int x, i;		/* counters */
+	int numbuffs = 4;	/* number of TX/RX buffers and descs */
+	u16 status = 0x8300;	/* TX ring status */
+	__le16 teststatus;	/* test of ring status */
+	int rc;			/* return code */
+	int size;		/* size of packets */
+	unsigned char *packet;	/* source packet data */
+	static const int data_len = 60;	/* length of source packets */
+	unsigned long flags;
+	unsigned long ticks;
+
+	rc = 1;			/* default to fail */
+
+	if (netif_running(dev))
+		pcnet32_netif_stop(dev);
+
+	spin_lock_irqsave(&lp->lock, flags);
+	lp->a.write_csr(ioaddr, CSR0, CSR0_STOP);	/* stop the chip */
+
+	numbuffs = min(numbuffs, (int)min(lp->rx_ring_size, lp->tx_ring_size));
+
+	/* Reset the PCNET32 */
+	lp->a.reset(ioaddr);
+	lp->a.write_csr(ioaddr, CSR4, 0x0915);	/* auto tx pad */
+
+	/* switch pcnet32 to 32bit mode */
+	lp->a.write_bcr(ioaddr, 20, 2);
+
+	/* purge & init rings but don't actually restart */
+	pcnet32_restart(dev, 0x0000);
+
+	lp->a.write_csr(ioaddr, CSR0, CSR0_STOP);	/* Set STOP bit */
+
+	/* Initialize Transmit buffers. */
+	size = data_len + 15;
+	for (x = 0; x < numbuffs; x++) {
+		skb = dev_alloc_skb(size);
+		if (!skb) {
+			netif_printk(lp, hw, KERN_DEBUG, dev,
+				     "Cannot allocate skb at line: %d!\n",
+				     __LINE__);
+			goto clean_up;
+		}
+		packet = skb->data;
+		skb_put(skb, size);	/* create space for data */
+		lp->tx_skbuff[x] = skb;
+		lp->tx_ring[x].length = cpu_to_le16(-skb->len);
+		lp->tx_ring[x].misc = 0;
+
+		/* put DA and SA into the skb */
+		for (i = 0; i < 6; i++)
+			*packet++ = dev->dev_addr[i];
+		for (i = 0; i < 6; i++)
+			*packet++ = dev->dev_addr[i];
+		/* type */
+		*packet++ = 0x08;
+		*packet++ = 0x06;
+		/* packet number */
+		*packet++ = x;
+		/* fill packet with data */
+		for (i = 0; i < data_len; i++)
+			*packet++ = i;
+
+		lp->tx_dma_addr[x] =
+			pci_map_single(lp->pci_dev, skb->data, skb->len,
+				       PCI_DMA_TODEVICE);
+		lp->tx_ring[x].base = cpu_to_le32(lp->tx_dma_addr[x]);
+		wmb();	/* Make sure owner changes after all others are visible */
+		lp->tx_ring[x].status = cpu_to_le16(status);
+	}
+
+	x = a->read_bcr(ioaddr, 32);	/* set internal loopback in BCR32 */
+	a->write_bcr(ioaddr, 32, x | 0x0002);
+
+	/* set int loopback in CSR15 */
+	x = a->read_csr(ioaddr, CSR15) & 0xfffc;
+	lp->a.write_csr(ioaddr, CSR15, x | 0x0044);
+
+	teststatus = cpu_to_le16(0x8000);
+	lp->a.write_csr(ioaddr, CSR0, CSR0_START);	/* Set STRT bit */
+
+	/* Check status of descriptors */
+	for (x = 0; x < numbuffs; x++) {
+		ticks = 0;
+		rmb();
+		while ((lp->rx_ring[x].status & teststatus) && (ticks < 200)) {
+			spin_unlock_irqrestore(&lp->lock, flags);
+			msleep(1);
+			spin_lock_irqsave(&lp->lock, flags);
+			rmb();
+			ticks++;
+		}
+		if (ticks == 200) {
+			netif_err(lp, hw, dev, "Desc %d failed to reset!\n", x);
+			break;
+		}
+	}
+
+	lp->a.write_csr(ioaddr, CSR0, CSR0_STOP);	/* Set STOP bit */
+	wmb();
+	if (netif_msg_hw(lp) && netif_msg_pktdata(lp)) {
+		netdev_printk(KERN_DEBUG, dev, "RX loopback packets:\n");
+
+		for (x = 0; x < numbuffs; x++) {
+			netdev_printk(KERN_DEBUG, dev, "Packet %d: ", x);
+			skb = lp->rx_skbuff[x];
+			for (i = 0; i < size; i++)
+				pr_cont(" %02x", *(skb->data + i));
+			pr_cont("\n");
+		}
+	}
+
+	x = 0;
+	rc = 0;
+	while (x < numbuffs && !rc) {
+		skb = lp->rx_skbuff[x];
+		packet = lp->tx_skbuff[x]->data;
+		for (i = 0; i < size; i++) {
+			if (*(skb->data + i) != packet[i]) {
+				netif_printk(lp, hw, KERN_DEBUG, dev,
+					     "Error in compare! %2x - %02x %02x\n",
+					     i, *(skb->data + i), packet[i]);
+				rc = 1;
+				break;
+			}
+		}
+		x++;
+	}
+
+clean_up:
+	*data1 = rc;
+	pcnet32_purge_tx_ring(dev);
+
+	x = a->read_csr(ioaddr, CSR15);
+	a->write_csr(ioaddr, CSR15, (x & ~0x0044));	/* reset bits 6 and 2 */
+
+	x = a->read_bcr(ioaddr, 32);	/* reset internal loopback */
+	a->write_bcr(ioaddr, 32, (x & ~0x0002));
+
+	if (netif_running(dev)) {
+		pcnet32_netif_start(dev);
+		pcnet32_restart(dev, CSR0_NORMAL);
+	} else {
+		pcnet32_purge_rx_ring(dev);
+		lp->a.write_bcr(ioaddr, 20, 4);	/* return to 16bit mode */
+	}
+	spin_unlock_irqrestore(&lp->lock, flags);
+
+	return rc;
+}				/* end pcnet32_loopback_test  */
+
+static int pcnet32_set_phys_id(struct net_device *dev,
+			       enum ethtool_phys_id_state state)
+{
+	struct pcnet32_private *lp = netdev_priv(dev);
+	struct pcnet32_access *a = &lp->a;
+	ulong ioaddr = dev->base_addr;
+	unsigned long flags;
+	int i;
+
+	switch (state) {
+	case ETHTOOL_ID_ACTIVE:
+		/* Save the current value of the bcrs */
+		spin_lock_irqsave(&lp->lock, flags);
+		for (i = 4; i < 8; i++)
+			lp->save_regs[i - 4] = a->read_bcr(ioaddr, i);
+		spin_unlock_irqrestore(&lp->lock, flags);
+		return 2;	/* cycle on/off twice per second */
+
+	case ETHTOOL_ID_ON:
+	case ETHTOOL_ID_OFF:
+		/* Blink the led */
+		spin_lock_irqsave(&lp->lock, flags);
+		for (i = 4; i < 8; i++)
+			a->write_bcr(ioaddr, i, a->read_bcr(ioaddr, i) ^ 0x4000);
+		spin_unlock_irqrestore(&lp->lock, flags);
+		break;
+
+	case ETHTOOL_ID_INACTIVE:
+		/* Restore the original value of the bcrs */
+		spin_lock_irqsave(&lp->lock, flags);
+		for (i = 4; i < 8; i++)
+			a->write_bcr(ioaddr, i, lp->save_regs[i - 4]);
+		spin_unlock_irqrestore(&lp->lock, flags);
+	}
+	return 0;
+}
+
+/*
+ * lp->lock must be held.
+ */
+static int pcnet32_suspend(struct net_device *dev, unsigned long *flags,
+		int can_sleep)
+{
+	int csr5;
+	struct pcnet32_private *lp = netdev_priv(dev);
+	struct pcnet32_access *a = &lp->a;
+	ulong ioaddr = dev->base_addr;
+	int ticks;
+
+	/* really old chips have to be stopped. */
+	if (lp->chip_version < PCNET32_79C970A)
+		return 0;
+
+	/* set SUSPEND (SPND) - CSR5 bit 0 */
+	csr5 = a->read_csr(ioaddr, CSR5);
+	a->write_csr(ioaddr, CSR5, csr5 | CSR5_SUSPEND);
+
+	/* poll waiting for bit to be set */
+	ticks = 0;
+	while (!(a->read_csr(ioaddr, CSR5) & CSR5_SUSPEND)) {
+		spin_unlock_irqrestore(&lp->lock, *flags);
+		if (can_sleep)
+			msleep(1);
+		else
+			mdelay(1);
+		spin_lock_irqsave(&lp->lock, *flags);
+		ticks++;
+		if (ticks > 200) {
+			netif_printk(lp, hw, KERN_DEBUG, dev,
+				     "Error getting into suspend!\n");
+			return 0;