Merge branch 'upstream' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6

25 files changed, 4847 insertions, 1850 deletions

diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index ae9e7a579b94..6bb9232514b4 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -2058,6 +2058,13 @@ config BNX2
 	  To compile this driver as a module, choose M here: the module
 	  will be called bnx2.  This is recommended.
 
+config SPIDER_NET
+	tristate "Spider Gigabit Ethernet driver"
+	depends on PCI && PPC_BPA
+	help
+	  This driver supports the Gigabit Ethernet chips present on the
+	  Cell Processor-Based Blades from IBM.
+
 config GIANFAR
 	tristate "Gianfar Ethernet"
 	depends on 85xx || 83xx
diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index 5baafcd55610..8645c843cf4d 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -54,6 +54,8 @@ obj-$(CONFIG_STNIC) += stnic.o 8390.o
 obj-$(CONFIG_FEALNX) += fealnx.o
 obj-$(CONFIG_TIGON3) += tg3.o
 obj-$(CONFIG_BNX2) += bnx2.o
+spidernet-y += spider_net.o spider_net_ethtool.o sungem_phy.o
+obj-$(CONFIG_SPIDER_NET) += spidernet.o
 obj-$(CONFIG_TC35815) += tc35815.o
 obj-$(CONFIG_SKGE) += skge.o
 obj-$(CONFIG_SK98LIN) += sk98lin/
diff --git a/drivers/net/ac3200.c b/drivers/net/ac3200.c
index 91791ba37769..8a0af5453e21 100644
--- a/drivers/net/ac3200.c
+++ b/drivers/net/ac3200.c
@@ -275,7 +275,7 @@ static int __init ac_probe1(int ioaddr, struct net_device *dev)
 	return 0;
 out2:
 	if (ei_status.reg0)
-		iounmap((void *)dev->mem_start);
+		iounmap(ei_status.mem);
 out1:
 	free_irq(dev->irq, dev);
 out:
diff --git a/drivers/net/atarilance.c b/drivers/net/atarilance.c
index ad011214c7f2..e01b6a78ec63 100644
--- a/drivers/net/atarilance.c
+++ b/drivers/net/atarilance.c
@@ -235,7 +235,7 @@ struct lance_private {
 #define	MEM		lp->mem
 #define	DREG	IO->data
 #define	AREG	IO->addr
-#define	REGA(a)	( AREG = (a), DREG )
+#define	REGA(a)	(*( AREG = (a), &DREG ))
 
 /* Definitions for packet buffer access: */
 #define PKT_BUF_SZ		1544
diff --git a/drivers/net/dm9000.c b/drivers/net/dm9000.c
index 6440a892bb81..e54fc10f6846 100644
--- a/drivers/net/dm9000.c
+++ b/drivers/net/dm9000.c
@@ -1140,7 +1140,7 @@ dm9000_phy_write(struct net_device *dev, int phyaddr_unused, int reg, int value)
 }
 
 static int
-dm9000_drv_suspend(struct device *dev, u32 state, u32 level)
+dm9000_drv_suspend(struct device *dev, pm_message_t state, u32 level)
 {
 	struct net_device *ndev = dev_get_drvdata(dev);
 
diff --git a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c
index 7d93948aec83..d6eefdb71c17 100644
--- a/drivers/net/forcedeth.c
+++ b/drivers/net/forcedeth.c
@@ -1372,7 +1372,7 @@ static int nv_change_mtu(struct net_device *dev, int new_mtu)
 
 	/* synchronized against open : rtnl_lock() held by caller */
 	if (netif_running(dev)) {
-		u8 *base = get_hwbase(dev);
+		u8 __iomem *base = get_hwbase(dev);
 		/*
 		 * It seems that the nic preloads valid ring entries into an
 		 * internal buffer. The procedure for flushing everything is
@@ -1423,7 +1423,7 @@ static int nv_change_mtu(struct net_device *dev, int new_mtu)
 
 static void nv_copy_mac_to_hw(struct net_device *dev)
 {
-	u8 *base = get_hwbase(dev);
+	u8 __iomem *base = get_hwbase(dev);
 	u32 mac[2];
 
 	mac[0] = (dev->dev_addr[0] << 0) + (dev->dev_addr[1] << 8) +
diff --git a/drivers/net/iseries_veth.c b/drivers/net/iseries_veth.c
index dc5d089bf184..3d56cf5a4e23 100644
--- a/drivers/net/iseries_veth.c
+++ b/drivers/net/iseries_veth.c
@@ -4,6 +4,7 @@
  * Copyright (C) 2001 Kyle A. Lucke (klucke@us.ibm.com), IBM Corp.
  * Substantially cleaned up by:
  * Copyright (C) 2003 David Gibson <dwg@au1.ibm.com>, IBM Corporation.
+ * Copyright (C) 2004-2005 Michael Ellerman, IBM Corporation.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/drivers/net/s2io-regs.h b/drivers/net/s2io-regs.h
index 2234a8f05eb2..7cefe5507b9e 100644
--- a/drivers/net/s2io-regs.h
+++ b/drivers/net/s2io-regs.h
@@ -1,5 +1,5 @@
 /************************************************************************
- * regs.h: A Linux PCI-X Ethernet driver for S2IO 10GbE Server NIC
+ * regs.h: A Linux PCI-X Ethernet driver for Neterion 10GbE Server NIC
  * Copyright(c) 2002-2005 Neterion Inc.
 
  * This software may be used and distributed according to the terms of
@@ -713,13 +713,16 @@ typedef struct _XENA_dev_config {
 	u64 mc_err_reg;
 #define MC_ERR_REG_ECC_DB_ERR_L            BIT(14)
 #define MC_ERR_REG_ECC_DB_ERR_U            BIT(15)
+#define MC_ERR_REG_MIRI_ECC_DB_ERR_0       BIT(18)
+#define MC_ERR_REG_MIRI_ECC_DB_ERR_1       BIT(20)
 #define MC_ERR_REG_MIRI_CRI_ERR_0          BIT(22)
 #define MC_ERR_REG_MIRI_CRI_ERR_1          BIT(23)
 #define MC_ERR_REG_SM_ERR                  BIT(31)
-#define MC_ERR_REG_ECC_ALL_SNG		   (BIT(6) | \
-					BIT(7) | BIT(17) | BIT(19))
-#define MC_ERR_REG_ECC_ALL_DBL		   (BIT(14) | \
-					BIT(15) | BIT(18) | BIT(20))
+#define MC_ERR_REG_ECC_ALL_SNG		   (BIT(2) | BIT(3) | BIT(4) | BIT(5) |\
+					    BIT(6) | BIT(7) | BIT(17) | BIT(19))
+#define MC_ERR_REG_ECC_ALL_DBL		   (BIT(10) | BIT(11) | BIT(12) |\
+					    BIT(13) | BIT(14) | BIT(15) |\
+					    BIT(18) | BIT(20))
 	u64 mc_err_mask;
 	u64 mc_err_alarm;
 
diff --git a/drivers/net/s2io.c b/drivers/net/s2io.c
index 7f9a11fc3a18..c829e6a2e8a6 100644
--- a/drivers/net/s2io.c
+++ b/drivers/net/s2io.c
@@ -1,5 +1,5 @@
 /************************************************************************
- * s2io.c: A Linux PCI-X Ethernet driver for S2IO 10GbE Server NIC
+ * s2io.c: A Linux PCI-X Ethernet driver for Neterion 10GbE Server NIC
  * Copyright(c) 2002-2005 Neterion Inc.
 
  * This software may be used and distributed according to the terms of
@@ -28,7 +28,7 @@
  * explaination of all the variables.
  * rx_ring_num : This can be used to program the number of receive rings used
  * in the driver.
- * rx_ring_len: This defines the number of descriptors each ring can have. This
+ * rx_ring_sz: This defines the number of descriptors each ring can have. This
  * is also an array of size 8.
  * tx_fifo_num: This defines the number of Tx FIFOs thats used int the driver.
  * tx_fifo_len: This too is an array of 8. Each element defines the number of
@@ -67,7 +67,7 @@
 
 /* S2io Driver name & version. */
 static char s2io_driver_name[] = "Neterion";
-static char s2io_driver_version[] = "Version 2.0.3.1";
+static char s2io_driver_version[] = "Version 2.0.8.1";
 
 static inline int RXD_IS_UP2DT(RxD_t *rxdp)
 {
@@ -404,7 +404,7 @@ static int init_shared_mem(struct s2io_nic *nic)
 		    config->tx_cfg[i].fifo_len - 1;
 		mac_control->fifos[i].fifo_no = i;
 		mac_control->fifos[i].nic = nic;
-		mac_control->fifos[i].max_txds = MAX_SKB_FRAGS;
+		mac_control->fifos[i].max_txds = MAX_SKB_FRAGS + 1;
 
 		for (j = 0; j < page_num; j++) {
 			int k = 0;
@@ -418,6 +418,26 @@ static int init_shared_mem(struct s2io_nic *nic)
 				DBG_PRINT(ERR_DBG, "failed for TxDL\n");
 				return -ENOMEM;
 			}
+			/* If we got a zero DMA address(can happen on
+			 * certain platforms like PPC), reallocate.
+			 * Store virtual address of page we don't want,
+			 * to be freed later.
+			 */
+			if (!tmp_p) {
+				mac_control->zerodma_virt_addr = tmp_v;
+				DBG_PRINT(INIT_DBG, 
+				"%s: Zero DMA address for TxDL. ", dev->name);
+				DBG_PRINT(INIT_DBG, 
+				"Virtual address %llx\n", (u64)tmp_v);
+				tmp_v = pci_alloc_consistent(nic->pdev,
+						     PAGE_SIZE, &tmp_p);
+				if (!tmp_v) {
+					DBG_PRINT(ERR_DBG,
+					  "pci_alloc_consistent ");
+					DBG_PRINT(ERR_DBG, "failed for TxDL\n");
+					return -ENOMEM;
+				}
+			}
 			while (k < lst_per_page) {
 				int l = (j * lst_per_page) + k;
 				if (l == config->tx_cfg[i].fifo_len)
@@ -600,7 +620,7 @@ static void free_shared_mem(struct s2io_nic *nic)
 	mac_info_t *mac_control;
 	struct config_param *config;
 	int lst_size, lst_per_page;
-
+	struct net_device *dev = nic->dev;
 
 	if (!nic)
 		return;
@@ -616,9 +636,10 @@ static void free_shared_mem(struct s2io_nic *nic)
 						lst_per_page);
 		for (j = 0; j < page_num; j++) {
 			int mem_blks = (j * lst_per_page);
-			if ((!mac_control->fifos[i].list_info) ||
-				(!mac_control->fifos[i].list_info[mem_blks].
-				 list_virt_addr))
+			if (!mac_control->fifos[i].list_info)
+				return;	
+			if (!mac_control->fifos[i].list_info[mem_blks].
+				 list_virt_addr)
 				break;
 			pci_free_consistent(nic->pdev, PAGE_SIZE,
 					    mac_control->fifos[i].
@@ -628,6 +649,18 @@ static void free_shared_mem(struct s2io_nic *nic)
 					    list_info[mem_blks].
 					    list_phy_addr);
 		}
+		/* If we got a zero DMA address during allocation,
+		 * free the page now
+		 */
+		if (mac_control->zerodma_virt_addr) {
+			pci_free_consistent(nic->pdev, PAGE_SIZE,
+					    mac_control->zerodma_virt_addr,
+					    (dma_addr_t)0);
+			DBG_PRINT(INIT_DBG, 
+			"%s: Freeing TxDL with zero DMA addr. ", dev->name);
+			DBG_PRINT(INIT_DBG, "Virtual address %llx\n",
+			(u64)(mac_control->zerodma_virt_addr));
+		}
 		kfree(mac_control->fifos[i].list_info);
 	}
 
@@ -2479,9 +2512,10 @@ static void rx_intr_handler(ring_info_t *ring_data)
 #endif
 	spin_lock(&nic->rx_lock);
 	if (atomic_read(&nic->card_state) == CARD_DOWN) {
-		DBG_PRINT(ERR_DBG, "%s: %s going down for reset\n",
+		DBG_PRINT(INTR_DBG, "%s: %s going down for reset\n",
 			  __FUNCTION__, dev->name);
 		spin_unlock(&nic->rx_lock);
+		return;
 	}
 
 	get_info = ring_data->rx_curr_get_info;
@@ -2596,8 +2630,14 @@ static void tx_intr_handler(fifo_info_t *fifo_data)
 		if (txdlp->Control_1 & TXD_T_CODE) {
 			unsigned long long err;
 			err = txdlp->Control_1 & TXD_T_CODE;
-			DBG_PRINT(ERR_DBG, "***TxD error %llx\n",
-				  err);
+			if ((err >> 48) == 0xA) {
+				DBG_PRINT(TX_DBG, "TxD returned due \
+						to loss of link\n");
+			}
+			else {
+				DBG_PRINT(ERR_DBG, "***TxD error \
+						%llx\n", err);
+			}
 		}
 
 		skb = (struct sk_buff *) ((unsigned long)
@@ -2689,12 +2729,16 @@ static void alarm_intr_handler(struct s2io_nic *nic)
 		if (val64 & MC_ERR_REG_ECC_ALL_DBL) {
 			nic->mac_control.stats_info->sw_stat.
 				double_ecc_errs++;
-			DBG_PRINT(ERR_DBG, "%s: Device indicates ",
+			DBG_PRINT(INIT_DBG, "%s: Device indicates ",
 				  dev->name);
-			DBG_PRINT(ERR_DBG, "double ECC error!!\n");
+			DBG_PRINT(INIT_DBG, "double ECC error!!\n");
 			if (nic->device_type != XFRAME_II_DEVICE) {
-				netif_stop_queue(dev);
-				schedule_work(&nic->rst_timer_task);
+				/* Reset XframeI only if critical error */
+				if (val64 & (MC_ERR_REG_MIRI_ECC_DB_ERR_0 |
+					     MC_ERR_REG_MIRI_ECC_DB_ERR_1)) {
+					netif_stop_queue(dev);
+					schedule_work(&nic->rst_timer_task);
+				}
 			}
 		} else {
 			nic->mac_control.stats_info->sw_stat.
@@ -2706,7 +2750,8 @@ static void alarm_intr_handler(struct s2io_nic *nic)
 	val64 = readq(&bar0->serr_source);
 	if (val64 & SERR_SOURCE_ANY) {
 		DBG_PRINT(ERR_DBG, "%s: Device indicates ", dev->name);
-		DBG_PRINT(ERR_DBG, "serious error!!\n");
+		DBG_PRINT(ERR_DBG, "serious error %llx!!\n", 
+			  (unsigned long long)val64);
 		netif_stop_queue(dev);
 		schedule_work(&nic->rst_timer_task);
 	}
@@ -3130,7 +3175,7 @@ int s2io_xmit(struct sk_buff *skb, struct net_device *dev)
 	queue_len = mac_control->fifos[queue].tx_curr_put_info.fifo_len + 1;
 	/* Avoid "put" pointer going beyond "get" pointer */
 	if (txdp->Host_Control || (((put_off + 1) % queue_len) == get_off)) {
-		DBG_PRINT(ERR_DBG, "Error in xmit, No free TXDs.\n");
+		DBG_PRINT(TX_DBG, "Error in xmit, No free TXDs.\n");
 		netif_stop_queue(dev);
 		dev_kfree_skb(skb);
 		spin_unlock_irqrestore(&sp->tx_lock, flags);
@@ -3528,7 +3573,7 @@ static void s2io_set_multicast(struct net_device *dev)
 
 		val64 = readq(&bar0->mac_cfg);
 		sp->promisc_flg = 1;
-		DBG_PRINT(ERR_DBG, "%s: entered promiscuous mode\n",
+		DBG_PRINT(INFO_DBG, "%s: entered promiscuous mode\n",
 			  dev->name);
 	} else if (!(dev->flags & IFF_PROMISC) && (sp->promisc_flg)) {
 		/*  Remove the NIC from promiscuous mode */
@@ -3543,7 +3588,7 @@ static void s2io_set_multicast(struct net_device *dev)
 
 		val64 = readq(&bar0->mac_cfg);
 		sp->promisc_flg = 0;
-		DBG_PRINT(ERR_DBG, "%s: left promiscuous mode\n",
+		DBG_PRINT(INFO_DBG, "%s: left promiscuous mode\n",
 			  dev->name);
 	}
 
@@ -5325,7 +5370,7 @@ s2io_init_nic(struct pci_dev *pdev, const struct pci_device_id *pre)
 			break;
 		}
 	}
-	config->max_txds = MAX_SKB_FRAGS;
+	config->max_txds = MAX_SKB_FRAGS + 1;
 
 	/* Rx side parameters. */
 	if (rx_ring_sz[0] == 0)
@@ -5525,9 +5570,14 @@ s2io_init_nic(struct pci_dev *pdev, const struct pci_device_id *pre)
 	if (sp->device_type & XFRAME_II_DEVICE) {
 		DBG_PRINT(ERR_DBG, "%s: Neterion Xframe II 10GbE adapter ",
 			  dev->name);
-		DBG_PRINT(ERR_DBG, "(rev %d), Driver %s\n",
+		DBG_PRINT(ERR_DBG, "(rev %d), %s",
 				get_xena_rev_id(sp->pdev),
 				s2io_driver_version);
+#ifdef CONFIG_2BUFF_MODE
+		DBG_PRINT(ERR_DBG, ", Buffer mode %d",2);
+#endif
+
+		DBG_PRINT(ERR_DBG, "\nCopyright(c) 2002-2005 Neterion Inc.\n");
 		DBG_PRINT(ERR_DBG, "MAC ADDR: %02x:%02x:%02x:%02x:%02x:%02x\n",
 			  sp->def_mac_addr[0].mac_addr[0],
 			  sp->def_mac_addr[0].mac_addr[1],
@@ -5544,9 +5594,13 @@ s2io_init_nic(struct pci_dev *pdev, const struct pci_device_id *pre)
 	} else {
 		DBG_PRINT(ERR_DBG, "%s: Neterion Xframe I 10GbE adapter ",
 			  dev->name);
-		DBG_PRINT(ERR_DBG, "(rev %d), Driver %s\n",
+		DBG_PRINT(ERR_DBG, "(rev %d), %s",
 					get_xena_rev_id(sp->pdev),
 					s2io_driver_version);
+#ifdef CONFIG_2BUFF_MODE
+		DBG_PRINT(ERR_DBG, ", Buffer mode %d",2);
+#endif
+		DBG_PRINT(ERR_DBG, "\nCopyright(c) 2002-2005 Neterion Inc.\n");
 		DBG_PRINT(ERR_DBG, "MAC ADDR: %02x:%02x:%02x:%02x:%02x:%02x\n",
 			  sp->def_mac_addr[0].mac_addr[0],
 			  sp->def_mac_addr[0].mac_addr[1],
diff --git a/drivers/net/s2io.h b/drivers/net/s2io.h
index bc64d967f080..89151cb52181 100644
--- a/drivers/net/s2io.h
+++ b/drivers/net/s2io.h
@@ -1,5 +1,5 @@
 /************************************************************************
- * s2io.h: A Linux PCI-X Ethernet driver for S2IO 10GbE Server NIC
+ * s2io.h: A Linux PCI-X Ethernet driver for Neterion 10GbE Server NIC
  * Copyright(c) 2002-2005 Neterion Inc.
 
  * This software may be used and distributed according to the terms of
@@ -622,6 +622,9 @@ typedef struct mac_info {
 	/* Fifo specific structure */
 	fifo_info_t fifos[MAX_TX_FIFOS];
 
+	/* Save virtual address of TxD page with zero DMA addr(if any) */
+	void *zerodma_virt_addr;
+
 /* rx side stuff */
 	/* Ring specific structure */
 	ring_info_t rings[MAX_RX_RINGS];
diff --git a/drivers/net/spider_net.c b/drivers/net/spider_net.c
new file mode 100644
index 000000000000..4e19220473d0
--- /dev/null
+++ b/drivers/net/spider_net.c
@@ -0,0 +1,2334 @@
+/*
+ * Network device driver for Cell Processor-Based Blade
+ *
+ * (C) Copyright IBM Corp. 2005
+ *
+ * Authors : Utz Bacher <utz.bacher@de.ibm.com>
+ *           Jens Osterkamp <Jens.Osterkamp@de.ibm.com>
+ *
+ * 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, or (at your option)
+ * any later version.
+ *
+ * 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/config.h>
+
+#include <linux/compiler.h>
+#include <linux/crc32.h>
+#include <linux/delay.h>
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+#include <linux/firmware.h>
+#include <linux/if_vlan.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/ip.h>
+#include <linux/kernel.h>
+#include <linux/mii.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/device.h>
+#include <linux/pci.h>
+#include <linux/skbuff.h>
+#include <linux/slab.h>
+#include <linux/tcp.h>
+#include <linux/types.h>
+#include <linux/wait.h>
+#include <linux/workqueue.h>
+#include <asm/bitops.h>
+#include <asm/pci-bridge.h>
+#include <net/checksum.h>
+
+#include "spider_net.h"
+
+MODULE_AUTHOR("Utz Bacher <utz.bacher@de.ibm.com> and Jens Osterkamp " \
+	      "<Jens.Osterkamp@de.ibm.com>");
+MODULE_DESCRIPTION("Spider Southbridge Gigabit Ethernet driver");
+MODULE_LICENSE("GPL");
+
+static int rx_descriptors = SPIDER_NET_RX_DESCRIPTORS_DEFAULT;
+static int tx_descriptors = SPIDER_NET_TX_DESCRIPTORS_DEFAULT;
+
+module_param(rx_descriptors, int, 0644);
+module_param(tx_descriptors, int, 0644);
+
+MODULE_PARM_DESC(rx_descriptors, "number of descriptors used " \
+		 "in rx chains");
+MODULE_PARM_DESC(tx_descriptors, "number of descriptors used " \
+		 "in tx chain");
+
+char spider_net_driver_name[] = "spidernet";
+
+static struct pci_device_id spider_net_pci_tbl[] = {
+	{ PCI_VENDOR_ID_TOSHIBA_2, PCI_DEVICE_ID_TOSHIBA_SPIDER_NET,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
+	{ 0, }
+};
+
+MODULE_DEVICE_TABLE(pci, spider_net_pci_tbl);
+
+/**
+ * spider_net_read_reg - reads an SMMIO register of a card
+ * @card: device structure
+ * @reg: register to read from
+ *
+ * returns the content of the specified SMMIO register.
+ */
+static u32
+spider_net_read_reg(struct spider_net_card *card, u32 reg)
+{
+	u32 value;
+
+	value = readl(card->regs + reg);
+	value = le32_to_cpu(value);
+
+	return value;
+}
+
+/**
+ * spider_net_write_reg - writes to an SMMIO register of a card
+ * @card: device structure
+ * @reg: register to write to
+ * @value: value to write into the specified SMMIO register
+ */
+static void
+spider_net_write_reg(struct spider_net_card *card, u32 reg, u32 value)
+{
+	value = cpu_to_le32(value);
+	writel(value, card->regs + reg);
+}
+
+/**
+ * spider_net_write_reg_sync - writes to an SMMIO register of a card
+ * @card: device structure
+ * @reg: register to write to
+ * @value: value to write into the specified SMMIO register
+ *
+ * Unlike spider_net_write_reg, this will also make sure the
+ * data arrives on the card by reading the reg again.
+ */
+static void
+spider_net_write_reg_sync(struct spider_net_card *card, u32 reg, u32 value)
+{
+	value = cpu_to_le32(value);
+	writel(value, card->regs + reg);
+	(void)readl(card->regs + reg);
+}
+
+/**
+ * spider_net_rx_irq_off - switch off rx irq on this spider card
+ * @card: device structure
+ *
+ * switches off rx irq by masking them out in the GHIINTnMSK register
+ */
+static void
+spider_net_rx_irq_off(struct spider_net_card *card)
+{
+	u32 regvalue;
+	unsigned long flags;
+
+	spin_lock_irqsave(&card->intmask_lock, flags);
+	regvalue = spider_net_read_reg(card, SPIDER_NET_GHIINT0MSK);
+	regvalue &= ~SPIDER_NET_RXINT;
+	spider_net_write_reg_sync(card, SPIDER_NET_GHIINT0MSK, regvalue);
+	spin_unlock_irqrestore(&card->intmask_lock, flags);
+}
+
+/** spider_net_write_phy - write to phy register
+ * @netdev: adapter to be written to
+ * @mii_id: id of MII
+ * @reg: PHY register
+ * @val: value to be written to phy register
+ *
+ * spider_net_write_phy_register writes to an arbitrary PHY
+ * register via the spider GPCWOPCMD register. We assume the queue does
+ * not run full (not more than 15 commands outstanding).
+ **/
+static void
+spider_net_write_phy(struct net_device *netdev, int mii_id,
+		     int reg, int val)
+{
+	struct spider_net_card *card = netdev_priv(netdev);
+	u32 writevalue;
+
+	writevalue = ((u32)mii_id << 21) |
+		((u32)reg << 16) | ((u32)val);
+
+	spider_net_write_reg(card, SPIDER_NET_GPCWOPCMD, writevalue);
+}
+
+/** spider_net_read_phy - read from phy register
+ * @netdev: network device to be read from
+ * @mii_id: id of MII
+ * @reg: PHY register
+ *
+ * Returns value read from PHY register
+ *
+ * spider_net_write_phy reads from an arbitrary PHY
+ * register via the spider GPCROPCMD register
+ **/
+static int
+spider_net_read_phy(struct net_device *netdev, int mii_id, int reg)
+{
+	struct spider_net_card *card = netdev_priv(netdev);
+	u32 readvalue;
+
+	readvalue = ((u32)mii_id << 21) | ((u32)reg << 16);
+	spider_net_write_reg(card, SPIDER_NET_GPCROPCMD, readvalue);
+
+	/* we don't use semaphores to wait for an SPIDER_NET_GPROPCMPINT
+	 * interrupt, as we poll for the completion of the read operation
+	 * in spider_net_read_phy. Should take about 50 us */
+	do {
+		readvalue = spider_net_read_reg(card, SPIDER_NET_GPCROPCMD);
+	} while (readvalue & SPIDER_NET_GPREXEC);
+
+	readvalue &= SPIDER_NET_GPRDAT_MASK;
+
+	return readvalue;
+}
+
+/**
+ * spider_net_rx_irq_on - switch on rx irq on this spider card
+ * @card: device structure
+ *
+ * switches on rx irq by enabling them in the GHIINTnMSK register
+ */
+static void
+spider_net_rx_irq_on(struct spider_net_card *card)
+{
+	u32 regvalue;
+	unsigned long flags;
+
+	spin_lock_irqsave(&card->intmask_lock, flags);
+	regvalue = spider_net_read_reg(card, SPIDER_NET_GHIINT0MSK);
+	regvalue |= SPIDER_NET_RXINT;
+	spider_net_write_reg_sync(card, SPIDER_NET_GHIINT0MSK, regvalue);
+	spin_unlock_irqrestore(&card->intmask_lock, flags);
+}
+
+/**
+ * spider_net_tx_irq_off - switch off tx irq on this spider card
+ * @card: device structure
+ *
+ * switches off tx irq by masking them out in the GHIINTnMSK register
+ */
+static void
+spider_net_tx_irq_off(struct spider_net_card *card)
+{
+	u32 regvalue;
+	unsigned long flags;
+
+	spin_lock_irqsave(&card->intmask_lock, flags);
+	regvalue = spider_net_read_reg(card, SPIDER_NET_GHIINT0MSK);
+	regvalue &= ~SPIDER_NET_TXINT;
+	spider_net_write_reg_sync(card, SPIDER_NET_GHIINT0MSK, regvalue);
+	spin_unlock_irqrestore(&card->intmask_lock, flags);
+}
+
+/**
+ * spider_net_tx_irq_on - switch on tx irq on this spider card
+ * @card: device structure
+ *
+ * switches on tx irq by enabling them in the GHIINTnMSK register
+ */
+static void
+spider_net_tx_irq_on(struct spider_net_card *card)
+{
+	u32 regvalue;
+	unsigned long flags;
+
+	spin_lock_irqsave(&card->intmask_lock, flags);
+	regvalue = spider_net_read_reg(card, SPIDER_NET_GHIINT0MSK);
+	regvalue |= SPIDER_NET_TXINT;
+	spider_net_write_reg_sync(card, SPIDER_NET_GHIINT0MSK, regvalue);
+	spin_unlock_irqrestore(&card->intmask_lock, flags);
+}
+
+/**
+ * spider_net_set_promisc - sets the unicast address or the promiscuous mode
+ * @card: card structure
+ *
+ * spider_net_set_promisc sets the unicast destination address filter and
+ * thus either allows for non-promisc mode or promisc mode
+ */
+static void
+spider_net_set_promisc(struct spider_net_card *card)
+{
+	u32 macu, macl;
+	struct net_device *netdev = card->netdev;
+
+	if (netdev->flags & IFF_PROMISC) {
+		/* clear destination entry 0 */
+		spider_net_write_reg(card, SPIDER_NET_GMRUAFILnR, 0);
+		spider_net_write_reg(card, SPIDER_NET_GMRUAFILnR + 0x04, 0);
+		spider_net_write_reg(card, SPIDER_NET_GMRUA0FIL15R,
+				     SPIDER_NET_PROMISC_VALUE);
+	} else {
+		macu = netdev->dev_addr[0];
+		macu <<= 8;
+		macu |= netdev->dev_addr[1];
+		memcpy(&macl, &netdev->dev_addr[2], sizeof(macl));
+
+		macu |= SPIDER_NET_UA_DESCR_VALUE;
+		spider_net_write_reg(card, SPIDER_NET_GMRUAFILnR, macu);
+		spider_net_write_reg(card, SPIDER_NET_GMRUAFILnR + 0x04, macl);
+		spider_net_write_reg(card, SPIDER_NET_GMRUA0FIL15R,
+				     SPIDER_NET_NONPROMISC_VALUE);
+	}
+}
+
+/**
+ * spider_net_get_mac_address - read mac address from spider card
+ * @card: device structure
+ *
+ * reads MAC address from GMACUNIMACU and GMACUNIMACL registers
+ */
+static int
+spider_net_get_mac_address(struct net_device *netdev)
+{
+	struct spider_net_card *card = netdev_priv(netdev);
+	u32 macl, macu;
+
+	macl = spider_net_read_reg(card, SPIDER_NET_GMACUNIMACL);
+	macu = spider_net_read_reg(card, SPIDER_NET_GMACUNIMACU);
+
+	netdev->dev_addr[0] = (macu >> 24) & 0xff;
+	netdev->dev_addr[1] = (macu >> 16) & 0xff;
+	netdev->dev_addr[2] = (macu >> 8) & 0xff;
+	netdev->dev_addr[3] = macu & 0xff;
+	netdev->dev_addr[4] = (macl >> 8) & 0xff;
+	netdev->dev_addr[5] = macl & 0xff;
+
+	if (!is_valid_ether_addr(&netdev->dev_addr[0]))
+		return -EINVAL;
+
+	return 0;
+}
+
+/**
+ * spider_net_get_descr_status -- returns the status of a descriptor
+ * @descr: descriptor to look at
+ *
+ * returns the status as in the dmac_cmd_status field of the descriptor
+ */
+static enum spider_net_descr_status
+spider_net_get_descr_status(struct spider_net_descr *descr)
+{
+	u32 cmd_status;
+	rmb();
+	cmd_status = descr->dmac_cmd_status;
+	rmb();
+	cmd_status >>= SPIDER_NET_DESCR_IND_PROC_SHIFT;
+	/* no need to mask out any bits, as cmd_status is 32 bits wide only
+	 * (and unsigned) */
+	return cmd_status;
+}
+
+/**
+ * spider_net_set_descr_status -- sets the status of a descriptor
+ * @descr: descriptor to change
+ * @status: status to set in the descriptor
+ *
+ * changes the status to the specified value. Doesn't change other bits
+ * in the status
+ */
+static void
+spider_net_set_descr_status(struct spider_net_descr *descr,
+			    enum spider_net_descr_status status)
+{
+	u32 cmd_status;
+	/* read the status */
+	mb();
+	cmd_status = descr->dmac_cmd_status;
+	/* clean the upper 4 bits */
+	cmd_status &= SPIDER_NET_DESCR_IND_PROC_MASKO;
+	/* add the status to it */
+	cmd_status |= ((u32)status)<<SPIDER_NET_DESCR_IND_PROC_SHIFT;
+	/* and write it back */
+	descr->dmac_cmd_status = cmd_status;
+	wmb();
+}
+
+/**
+ * spider_net_free_chain - free descriptor chain
+ * @card: card structure
+ * @chain: address of chain
+ *
+ */
+static void
+spider_net_free_chain(struct spider_net_card *card,
+		      struct spider_net_descr_chain *chain)
+{
+	struct spider_net_descr *descr;
+
+	for (descr = chain->tail; !descr->bus_addr; descr = descr->next) {
+		pci_unmap_single(card->pdev, descr->bus_addr,
+				 SPIDER_NET_DESCR_SIZE, PCI_DMA_BIDIRECTIONAL);
+		descr->bus_addr = 0;
+	}
+}
+
+/**
+ * spider_net_init_chain - links descriptor chain
+ * @card: card structure
+ * @chain: address of chain
+ * @start_descr: address of descriptor array
+ * @no: number of descriptors
+ *
+ * we manage a circular list that mirrors the hardware structure,
+ * except that the hardware uses bus addresses.
+ *
+ * returns 0 on success, <0 on failure
+ */
+static int
+spider_net_init_chain(struct spider_net_card *card,
+		       struct spider_net_descr_chain *chain,
+		       struct spider_net_descr *start_descr, int no)
+{
+	int i;
+	struct spider_net_descr *descr;
+
+	spin_lock_init(&card->chain_lock);
+
+	descr = start_descr;
+	memset(descr, 0, sizeof(*descr) * no);
+
+	/* set up the hardware pointers in each descriptor */
+	for (i=0; i<no; i++, descr++) {
+		spider_net_set_descr_status(descr, SPIDER_NET_DESCR_NOT_IN_USE);
+
+		descr->bus_addr =
+			pci_map_single(card->pdev, descr,
+				       SPIDER_NET_DESCR_SIZE,
+				       PCI_DMA_BIDIRECTIONAL);
+
+		if (descr->bus_addr == DMA_ERROR_CODE)
+			goto iommu_error;
+
+		descr->next = descr + 1;
+		descr->prev = descr - 1;
+
+	}
+	/* do actual circular list */
+	(descr-1)->next = start_descr;
+	start_descr->prev = descr-1;
+
+	descr = start_descr;
+	for (i=0; i < no; i++, descr++) {
+		descr->next_descr_addr = descr->next->bus_addr;
+	}
+
+	chain->head = start_descr;
+	chain->tail = start_descr;
+
+	return 0;
+
+iommu_error:
+	descr = start_descr;
+	for (i=0; i < no; i++, descr++)
+		if (descr->bus_addr)
+			pci_unmap_single(card->pdev, descr->bus_addr,
+					 SPIDER_NET_DESCR_SIZE, PCI_DMA_BIDIRECTIONAL);
+	return -ENOMEM;
+}
+
+/**
+ * spider_net_free_rx_chain_contents - frees descr contents in rx chain
+ * @card: card structure
+ *
+ * returns 0 on success, <0 on failure
+ */
+static void
+spider_net_free_rx_chain_contents(struct spider_net_card *card)
+{
+	struct spider_net_descr *descr;
+
+	descr = card->rx_chain.head;
+	while (descr->next != card->rx_chain.head) {
+		if (descr->skb) {
+			dev_kfree_skb(descr->skb);