Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 3115 insertions, 0 deletions

diff --git a/drivers/net/hp100.c b/drivers/net/hp100.c
new file mode 100644
index 00000000000..acb170152bb
--- /dev/null
+++ b/drivers/net/hp100.c
@@ -0,0 +1,3115 @@
+/*
+** hp100.c 
+** HP CASCADE Architecture Driver for 100VG-AnyLan Network Adapters
+**
+** $Id: hp100.c,v 1.58 2001/09/24 18:03:01 perex Exp perex $
+**
+** Based on the HP100 driver written by Jaroslav Kysela <perex@jcu.cz>
+** Extended for new busmaster capable chipsets by 
+** Siegfried "Frieder" Loeffler (dg1sek) <floeff@mathematik.uni-stuttgart.de>
+**
+** Maintained by: Jaroslav Kysela <perex@suse.cz>
+** 
+** This driver has only been tested with
+** -- HP J2585B 10/100 Mbit/s PCI Busmaster
+** -- HP J2585A 10/100 Mbit/s PCI 
+** -- HP J2970  10 Mbit/s PCI Combo 10base-T/BNC
+** -- HP J2973  10 Mbit/s PCI 10base-T
+** -- HP J2573  10/100 ISA
+** -- Compex ReadyLink ENET100-VG4  10/100 Mbit/s PCI / EISA
+** -- Compex FreedomLine 100/VG  10/100 Mbit/s ISA / EISA / PCI
+** 
+** but it should also work with the other CASCADE based adapters.
+**
+** TODO:
+**       -  J2573 seems to hang sometimes when in shared memory mode.
+**       -  Mode for Priority TX
+**       -  Check PCI registers, performance might be improved?
+**       -  To reduce interrupt load in busmaster, one could switch off
+**          the interrupts that are used to refill the queues whenever the
+**          queues are filled up to more than a certain threshold.
+**       -  some updates for EISA version of card
+**
+**
+**   This code 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, or
+**   (at your option) any later version.
+**
+**   This code 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.
+**
+** 1.57c -> 1.58
+**   - used indent to change coding-style
+**   - added KTI DP-200 EISA ID
+**   - ioremap is also used for low (<1MB) memory (multi-architecture support)
+**
+** 1.57b -> 1.57c - Arnaldo Carvalho de Melo <acme@conectiva.com.br>
+**   - release resources on failure in init_module
+**
+** 1.57 -> 1.57b - Jean II
+**   - fix spinlocks, SMP is now working !
+**
+** 1.56 -> 1.57
+**   - updates for new PCI interface for 2.1 kernels
+**
+** 1.55 -> 1.56
+**   - removed printk in misc. interrupt and update statistics to allow
+**     monitoring of card status
+**   - timing changes in xmit routines, relogin to 100VG hub added when
+**     driver does reset
+**   - included fix for Compex FreedomLine PCI adapter
+** 
+** 1.54 -> 1.55
+**   - fixed bad initialization in init_module
+**   - added Compex FreedomLine adapter
+**   - some fixes in card initialization
+**
+** 1.53 -> 1.54
+**   - added hardware multicast filter support (doesn't work)
+**   - little changes in hp100_sense_lan routine 
+**     - added support for Coax and AUI (J2970)
+**   - fix for multiple cards and hp100_mode parameter (insmod)
+**   - fix for shared IRQ 
+**
+** 1.52 -> 1.53
+**   - fixed bug in multicast support
+**
+*/
+
+#define HP100_DEFAULT_PRIORITY_TX 0
+
+#undef HP100_DEBUG
+#undef HP100_DEBUG_B		/* Trace  */
+#undef HP100_DEBUG_BM		/* Debug busmaster code (PDL stuff) */
+
+#undef HP100_DEBUG_TRAINING	/* Debug login-to-hub procedure */
+#undef HP100_DEBUG_TX
+#undef HP100_DEBUG_IRQ
+#undef HP100_DEBUG_RX
+
+#undef HP100_MULTICAST_FILTER	/* Need to be debugged... */
+
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/eisa.h>
+#include <linux/pci.h>
+#include <linux/spinlock.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/types.h>
+#include <linux/config.h>	/* for CONFIG_PCI */
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/bitops.h>
+
+#include <asm/io.h>
+
+#include "hp100.h"
+
+/*
+ *  defines
+ */
+
+#define HP100_BUS_ISA     0
+#define HP100_BUS_EISA    1
+#define HP100_BUS_PCI     2
+
+#define HP100_REGION_SIZE	0x20	/* for ioports */
+#define HP100_SIG_LEN		8	/* same as EISA_SIG_LEN */
+
+#define HP100_MAX_PACKET_SIZE	(1536+4)
+#define HP100_MIN_PACKET_SIZE	60
+
+#ifndef HP100_DEFAULT_RX_RATIO
+/* default - 75% onboard memory on the card are used for RX packets */
+#define HP100_DEFAULT_RX_RATIO	75
+#endif
+
+#ifndef HP100_DEFAULT_PRIORITY_TX
+/* default - don't enable transmit outgoing packets as priority */
+#define HP100_DEFAULT_PRIORITY_TX 0
+#endif
+
+/*
+ *  structures
+ */
+
+struct hp100_private {
+	spinlock_t lock;
+	char id[HP100_SIG_LEN];
+	u_short chip;
+	u_short soft_model;
+	u_int memory_size;
+	u_int virt_memory_size;
+	u_short rx_ratio;	/* 1 - 99 */
+	u_short priority_tx;	/* != 0 - priority tx */
+	u_short mode;		/* PIO, Shared Mem or Busmaster */
+	u_char bus;
+	struct pci_dev *pci_dev;
+	short mem_mapped;	/* memory mapped access */
+	void __iomem *mem_ptr_virt;	/* virtual memory mapped area, maybe NULL */
+	unsigned long mem_ptr_phys;	/* physical memory mapped area */
+	short lan_type;		/* 10Mb/s, 100Mb/s or -1 (error) */
+	int hub_status;		/* was login to hub successful? */
+	u_char mac1_mode;
+	u_char mac2_mode;
+	u_char hash_bytes[8];
+	struct net_device_stats stats;
+
+	/* Rings for busmaster mode: */
+	hp100_ring_t *rxrhead;	/* Head (oldest) index into rxring */
+	hp100_ring_t *rxrtail;	/* Tail (newest) index into rxring */
+	hp100_ring_t *txrhead;	/* Head (oldest) index into txring */
+	hp100_ring_t *txrtail;	/* Tail (newest) index into txring */
+
+	hp100_ring_t rxring[MAX_RX_PDL];
+	hp100_ring_t txring[MAX_TX_PDL];
+
+	u_int *page_vaddr_algn;	/* Aligned virtual address of allocated page */
+	u_long whatever_offset;	/* Offset to bus/phys/dma address */
+	int rxrcommit;		/* # Rx PDLs commited to adapter */
+	int txrcommit;		/* # Tx PDLs commited to adapter */
+};
+
+/*
+ *  variables
+ */
+static const char *hp100_isa_tbl[] = {
+	"HWPF150", /* HP J2573 rev A */
+	"HWP1950", /* HP J2573 */
+};
+
+#ifdef CONFIG_EISA
+static struct eisa_device_id hp100_eisa_tbl[] = {
+	{ "HWPF180" }, /* HP J2577 rev A */
+	{ "HWP1920" }, /* HP 27248B */
+	{ "HWP1940" }, /* HP J2577 */
+	{ "HWP1990" }, /* HP J2577 */
+	{ "CPX0301" }, /* ReadyLink ENET100-VG4 */
+	{ "CPX0401" }, /* FreedomLine 100/VG */
+	{ "" }	       /* Mandatory final entry ! */
+};
+MODULE_DEVICE_TABLE(eisa, hp100_eisa_tbl);
+#endif
+
+#ifdef CONFIG_PCI
+static struct pci_device_id hp100_pci_tbl[] = {
+	{PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585A, PCI_ANY_ID, PCI_ANY_ID,},
+	{PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2585B, PCI_ANY_ID, PCI_ANY_ID,},
+	{PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2970A, PCI_ANY_ID, PCI_ANY_ID,},
+	{PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_J2973A, PCI_ANY_ID, PCI_ANY_ID,},
+	{PCI_VENDOR_ID_COMPEX, PCI_DEVICE_ID_COMPEX_ENET100VG4, PCI_ANY_ID, PCI_ANY_ID,},
+	{PCI_VENDOR_ID_COMPEX2, PCI_DEVICE_ID_COMPEX2_100VG, PCI_ANY_ID, PCI_ANY_ID,},
+/*	{PCI_VENDOR_ID_KTI, PCI_DEVICE_ID_KTI_DP200, PCI_ANY_ID, PCI_ANY_ID }, */
+	{}			/* Terminating entry */
+};
+MODULE_DEVICE_TABLE(pci, hp100_pci_tbl);
+#endif
+
+static int hp100_rx_ratio = HP100_DEFAULT_RX_RATIO;
+static int hp100_priority_tx = HP100_DEFAULT_PRIORITY_TX;
+static int hp100_mode = 1;
+
+module_param(hp100_rx_ratio, int, 0);
+module_param(hp100_priority_tx, int, 0);
+module_param(hp100_mode, int, 0);
+
+/*
+ *  prototypes
+ */
+
+static int hp100_probe1(struct net_device *dev, int ioaddr, u_char bus,
+			struct pci_dev *pci_dev);
+
+
+static int hp100_open(struct net_device *dev);
+static int hp100_close(struct net_device *dev);
+static int hp100_start_xmit(struct sk_buff *skb, struct net_device *dev);
+static int hp100_start_xmit_bm(struct sk_buff *skb,
+			       struct net_device *dev);
+static void hp100_rx(struct net_device *dev);
+static struct net_device_stats *hp100_get_stats(struct net_device *dev);
+static void hp100_misc_interrupt(struct net_device *dev);
+static void hp100_update_stats(struct net_device *dev);
+static void hp100_clear_stats(struct hp100_private *lp, int ioaddr);
+static void hp100_set_multicast_list(struct net_device *dev);
+static irqreturn_t hp100_interrupt(int irq, void *dev_id, struct pt_regs *regs);
+static void hp100_start_interface(struct net_device *dev);
+static void hp100_stop_interface(struct net_device *dev);
+static void hp100_load_eeprom(struct net_device *dev, u_short ioaddr);
+static int hp100_sense_lan(struct net_device *dev);
+static int hp100_login_to_vg_hub(struct net_device *dev,
+				 u_short force_relogin);
+static int hp100_down_vg_link(struct net_device *dev);
+static void hp100_cascade_reset(struct net_device *dev, u_short enable);
+static void hp100_BM_shutdown(struct net_device *dev);
+static void hp100_mmuinit(struct net_device *dev);
+static void hp100_init_pdls(struct net_device *dev);
+static int hp100_init_rxpdl(struct net_device *dev,
+			    register hp100_ring_t * ringptr,
+			    register u_int * pdlptr);
+static int hp100_init_txpdl(struct net_device *dev,
+			    register hp100_ring_t * ringptr,
+			    register u_int * pdlptr);
+static void hp100_rxfill(struct net_device *dev);
+static void hp100_hwinit(struct net_device *dev);
+static void hp100_clean_txring(struct net_device *dev);
+#ifdef HP100_DEBUG
+static void hp100_RegisterDump(struct net_device *dev);
+#endif
+
+/* Conversion to new PCI API :
+ * Convert an address in a kernel buffer to a bus/phys/dma address.
+ * This work *only* for memory fragments part of lp->page_vaddr,
+ * because it was properly DMA allocated via pci_alloc_consistent(),
+ * so we just need to "retreive" the original mapping to bus/phys/dma
+ * address - Jean II */
+static inline dma_addr_t virt_to_whatever(struct net_device *dev, u32 * ptr)
+{
+	struct hp100_private *lp = netdev_priv(dev);
+	return ((u_long) ptr) + lp->whatever_offset;
+}
+
+static inline u_int pdl_map_data(struct hp100_private *lp, void *data)
+{
+	return pci_map_single(lp->pci_dev, data, 
+			      MAX_ETHER_SIZE, PCI_DMA_FROMDEVICE);
+}
+
+/* TODO: This function should not really be needed in a good design... */
+static void wait(void)
+{
+	mdelay(1);
+}
+
+/*
+ *  probe functions
+ *  These functions should - if possible - avoid doing write operations
+ *  since this could cause problems when the card is not installed.
+ */
+
+/*
+ * Read board id and convert to string.
+ * Effectively same code as decode_eisa_sig
+ */
+static __devinit const char *hp100_read_id(int ioaddr)
+{
+	int i;
+	static char str[HP100_SIG_LEN];
+	unsigned char sig[4], sum;
+        unsigned short rev;
+
+	hp100_page(ID_MAC_ADDR);
+	sum = 0;
+	for (i = 0; i < 4; i++) {
+		sig[i] = hp100_inb(BOARD_ID + i);
+		sum += sig[i];
+	}
+
+	sum += hp100_inb(BOARD_ID + i);
+	if (sum != 0xff)
+		return NULL;	/* bad checksum */
+
+        str[0] = ((sig[0] >> 2) & 0x1f) + ('A' - 1);
+        str[1] = (((sig[0] & 3) << 3) | (sig[1] >> 5)) + ('A' - 1);
+        str[2] = (sig[1] & 0x1f) + ('A' - 1);
+        rev = (sig[2] << 8) | sig[3];
+        sprintf(str + 3, "%04X", rev);
+
+	return str;
+}
+
+static __init int hp100_isa_probe1(struct net_device *dev, int ioaddr)
+{
+	const char *sig;
+	int i;
+
+	if (!request_region(ioaddr, HP100_REGION_SIZE, "hp100"))
+		goto err;
+
+	if (hp100_inw(HW_ID) != HP100_HW_ID_CASCADE) {
+		release_region(ioaddr, HP100_REGION_SIZE);
+		goto err;
+	}
+
+	sig = hp100_read_id(ioaddr);
+	release_region(ioaddr, HP100_REGION_SIZE);
+
+	if (sig == NULL)
+		goto err;
+
+	for (i = 0; i < ARRAY_SIZE(hp100_isa_tbl); i++) {
+		if (!strcmp(hp100_isa_tbl[i], sig)) 
+			break;
+
+	}
+
+	if (i < ARRAY_SIZE(hp100_isa_tbl))
+		return hp100_probe1(dev, ioaddr, HP100_BUS_ISA, NULL);
+ err:
+	return -ENODEV;
+
+}
+/*
+ * Probe for ISA board.
+ * EISA and PCI are handled by device infrastructure.
+ */
+
+static int  __init hp100_isa_probe(struct net_device *dev, int addr)
+{
+	int err = -ENODEV;
+
+	/* Probe for a specific ISA address */		
+	if (addr > 0xff && addr < 0x400)
+		err = hp100_isa_probe1(dev, addr);
+
+	else if (addr != 0) 
+		err = -ENXIO;
+
+	else {
+		/* Probe all ISA possible port regions */
+		for (addr = 0x100; addr < 0x400; addr += 0x20) {
+			err = hp100_isa_probe1(dev, addr);
+			if (!err)
+				break;
+		}
+	}
+	return err;
+}
+
+
+#ifndef MODULE
+struct net_device * __init hp100_probe(int unit)
+{
+	struct net_device *dev = alloc_etherdev(sizeof(struct hp100_private));
+	int err;
+
+	if (!dev)
+		return ERR_PTR(-ENODEV);
+
+	SET_MODULE_OWNER(dev);
+
+#ifdef HP100_DEBUG_B
+	hp100_outw(0x4200, TRACE);
+	printk("hp100: %s: probe\n", dev->name);
+#endif
+
+	if (unit >= 0) {
+		sprintf(dev->name, "eth%d", unit);
+		netdev_boot_setup_check(dev);
+	}
+
+	err = hp100_isa_probe(dev, dev->base_addr);
+	if (err)
+		goto out;
+
+	err = register_netdev(dev);
+	if (err)
+		goto out1;
+	return dev;
+ out1:
+	release_region(dev->base_addr, HP100_REGION_SIZE);
+ out:
+	free_netdev(dev);
+	return ERR_PTR(err);
+}
+#endif
+
+static int __devinit hp100_probe1(struct net_device *dev, int ioaddr,
+				  u_char bus, struct pci_dev *pci_dev)
+{
+	int i;
+	int err = -ENODEV;
+	const char *eid;
+	u_int chip;
+	u_char uc;
+	u_int memory_size = 0, virt_memory_size = 0;
+	u_short local_mode, lsw;
+	short mem_mapped;
+	unsigned long mem_ptr_phys;
+	void __iomem *mem_ptr_virt;
+	struct hp100_private *lp;
+
+#ifdef HP100_DEBUG_B
+	hp100_outw(0x4201, TRACE);
+	printk("hp100: %s: probe1\n", dev->name);
+#endif
+
+	/* memory region for programmed i/o */
+	if (!request_region(ioaddr, HP100_REGION_SIZE, "hp100"))
+		goto out1;
+
+	if (hp100_inw(HW_ID) != HP100_HW_ID_CASCADE) 
+		goto out2;
+
+	chip = hp100_inw(PAGING) & HP100_CHIPID_MASK;
+#ifdef HP100_DEBUG
+	if (chip == HP100_CHIPID_SHASTA)
+		printk("hp100: %s: Shasta Chip detected. (This is a pre 802.12 chip)\n", dev->name);
+	else if (chip == HP100_CHIPID_RAINIER)
+		printk("hp100: %s: Rainier Chip detected. (This is a pre 802.12 chip)\n", dev->name);
+	else if (chip == HP100_CHIPID_LASSEN)
+		printk("hp100: %s: Lassen Chip detected.\n", dev->name);
+	else
+		printk("hp100: %s: Warning: Unknown CASCADE chip (id=0x%.4x).\n", dev->name, chip);
+#endif
+
+	dev->base_addr = ioaddr;
+
+	eid = hp100_read_id(ioaddr);
+	if (eid == NULL) {	/* bad checksum? */
+		printk(KERN_WARNING "hp100_probe: bad ID checksum at base port 0x%x\n", ioaddr);
+		goto out2;
+	}
+
+	hp100_page(ID_MAC_ADDR);
+	for (i = uc = 0; i < 7; i++)
+		uc += hp100_inb(LAN_ADDR + i);
+	if (uc != 0xff) {
+		printk(KERN_WARNING "hp100_probe: bad lan address checksum at port 0x%x)\n", ioaddr);
+		err = -EIO;
+		goto out2;
+	}
+
+	/* Make sure, that all registers are correctly updated... */
+
+	hp100_load_eeprom(dev, ioaddr);
+	wait();
+
+	/*
+	 * Determine driver operation mode
+	 *
+	 * Use the variable "hp100_mode" upon insmod or as kernel parameter to
+	 * force driver modes:
+	 * hp100_mode=1 -> default, use busmaster mode if configured.
+	 * hp100_mode=2 -> enable shared memory mode 
+	 * hp100_mode=3 -> force use of i/o mapped mode.
+	 * hp100_mode=4 -> same as 1, but re-set the enable bit on the card.
+	 */
+
+	/*
+	 * LSW values:
+	 *   0x2278 -> J2585B, PnP shared memory mode
+	 *   0x2270 -> J2585B, shared memory mode, 0xdc000
+	 *   0xa23c -> J2585B, I/O mapped mode
+	 *   0x2240 -> EISA COMPEX, BusMaster (Shasta Chip)
+	 *   0x2220 -> EISA HP, I/O (Shasta Chip)
+	 *   0x2260 -> EISA HP, BusMaster (Shasta Chip)
+	 */
+
+#if 0
+	local_mode = 0x2270;
+	hp100_outw(0xfefe, OPTION_LSW);
+	hp100_outw(local_mode | HP100_SET_LB | HP100_SET_HB, OPTION_LSW);
+#endif
+
+	/* hp100_mode value maybe used in future by another card */
+	local_mode = hp100_mode;
+	if (local_mode < 1 || local_mode > 4)
+		local_mode = 1;	/* default */
+#ifdef HP100_DEBUG
+	printk("hp100: %s: original LSW = 0x%x\n", dev->name,
+	       hp100_inw(OPTION_LSW));
+#endif
+
+	if (local_mode == 3) {
+		hp100_outw(HP100_MEM_EN | HP100_RESET_LB, OPTION_LSW);
+		hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
+		hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
+		printk("hp100: IO mapped mode forced.\n");
+	} else if (local_mode == 2) {
+		hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
+		hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
+		hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
+		printk("hp100: Shared memory mode requested.\n");
+	} else if (local_mode == 4) {
+		if (chip == HP100_CHIPID_LASSEN) {
+			hp100_outw(HP100_BM_WRITE | HP100_BM_READ | HP100_SET_HB, OPTION_LSW);
+			hp100_outw(HP100_IO_EN | HP100_MEM_EN | HP100_RESET_LB, OPTION_LSW);
+			printk("hp100: Busmaster mode requested.\n");
+		}
+		local_mode = 1;
+	}
+
+	if (local_mode == 1) {	/* default behaviour */
+		lsw = hp100_inw(OPTION_LSW);
+
+		if ((lsw & HP100_IO_EN) && (~lsw & HP100_MEM_EN) &&
+		    (~lsw & (HP100_BM_WRITE | HP100_BM_READ))) {
+#ifdef HP100_DEBUG
+			printk("hp100: %s: IO_EN bit is set on card.\n", dev->name);
+#endif
+			local_mode = 3;
+		} else if (chip == HP100_CHIPID_LASSEN &&
+			   (lsw & (HP100_BM_WRITE | HP100_BM_READ)) == (HP100_BM_WRITE | HP100_BM_READ)) {
+			/* Conversion to new PCI API :
+			 * I don't have the doc, but I assume that the card
+			 * can map the full 32bit address space.
+			 * Also, we can have EISA Busmaster cards (not tested),
+			 * so beware !!! - Jean II */
+			if((bus == HP100_BUS_PCI) &&
+			   (pci_set_dma_mask(pci_dev, 0xffffffff))) {
+				/* Gracefully fallback to shared memory */
+				goto busmasterfail;
+			}
+			printk("hp100: Busmaster mode enabled.\n");
+			hp100_outw(HP100_MEM_EN | HP100_IO_EN | HP100_RESET_LB, OPTION_LSW);
+		} else {
+		busmasterfail:
+#ifdef HP100_DEBUG
+			printk("hp100: %s: Card not configured for BM or BM not supported with this card.\n", dev->name);
+			printk("hp100: %s: Trying shared memory mode.\n", dev->name);
+#endif
+			/* In this case, try shared memory mode */
+			local_mode = 2;
+			hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
+			/* hp100_outw(HP100_IO_EN|HP100_RESET_LB, OPTION_LSW); */
+		}
+	}
+#ifdef HP100_DEBUG
+	printk("hp100: %s: new LSW = 0x%x\n", dev->name, hp100_inw(OPTION_LSW));
+#endif
+
+	/* Check for shared memory on the card, eventually remap it */
+	hp100_page(HW_MAP);
+	mem_mapped = ((hp100_inw(OPTION_LSW) & (HP100_MEM_EN)) != 0);
+	mem_ptr_phys = 0UL;
+	mem_ptr_virt = NULL;
+	memory_size = (8192 << ((hp100_inb(SRAM) >> 5) & 0x07));
+	virt_memory_size = 0;
+
+	/* For memory mapped or busmaster mode, we want the memory address */
+	if (mem_mapped || (local_mode == 1)) {
+		mem_ptr_phys = (hp100_inw(MEM_MAP_LSW) | (hp100_inw(MEM_MAP_MSW) << 16));
+		mem_ptr_phys &= ~0x1fff;	/* 8k alignment */
+
+		if (bus == HP100_BUS_ISA && (mem_ptr_phys & ~0xfffff) != 0) {
+			printk("hp100: Can only use programmed i/o mode.\n");
+			mem_ptr_phys = 0;
+			mem_mapped = 0;
+			local_mode = 3;	/* Use programmed i/o */
+		}
+
+		/* We do not need access to shared memory in busmaster mode */
+		/* However in slave mode we need to remap high (>1GB) card memory  */
+		if (local_mode != 1) {	/* = not busmaster */
+			/* We try with smaller memory sizes, if ioremap fails */
+			for (virt_memory_size = memory_size; virt_memory_size > 16383; virt_memory_size >>= 1) {
+				if ((mem_ptr_virt = ioremap((u_long) mem_ptr_phys, virt_memory_size)) == NULL) {
+#ifdef HP100_DEBUG
+					printk("hp100: %s: ioremap for 0x%x bytes high PCI memory at 0x%lx failed\n", dev->name, virt_memory_size, mem_ptr_phys);
+#endif
+				} else {
+#ifdef HP100_DEBUG
+					printk("hp100: %s: remapped 0x%x bytes high PCI memory at 0x%lx to %p.\n", dev->name, virt_memory_size, mem_ptr_phys, mem_ptr_virt);
+#endif
+					break;
+				}
+			}
+
+			if (mem_ptr_virt == NULL) {	/* all ioremap tries failed */
+				printk("hp100: Failed to ioremap the PCI card memory. Will have to use i/o mapped mode.\n");
+				local_mode = 3;
+				virt_memory_size = 0;
+			}
+		}
+	}
+
+	if (local_mode == 3) {	/* io mapped forced */
+		mem_mapped = 0;
+		mem_ptr_phys = 0;
+		mem_ptr_virt = NULL;
+		printk("hp100: Using (slow) programmed i/o mode.\n");
+	}
+
+	/* Initialise the "private" data structure for this card. */
+	lp = netdev_priv(dev);
+
+	spin_lock_init(&lp->lock);
+	strlcpy(lp->id, eid, HP100_SIG_LEN);
+	lp->chip = chip;
+	lp->mode = local_mode;
+	lp->bus = bus;
+	lp->pci_dev = pci_dev;
+	lp->priority_tx = hp100_priority_tx;
+	lp->rx_ratio = hp100_rx_ratio;
+	lp->mem_ptr_phys = mem_ptr_phys;
+	lp->mem_ptr_virt = mem_ptr_virt;
+	hp100_page(ID_MAC_ADDR);
+	lp->soft_model = hp100_inb(SOFT_MODEL);
+	lp->mac1_mode = HP100_MAC1MODE3;
+	lp->mac2_mode = HP100_MAC2MODE3;
+	memset(&lp->hash_bytes, 0x00, 8);
+
+	dev->base_addr = ioaddr;
+
+	lp->memory_size = memory_size;
+	lp->virt_memory_size = virt_memory_size;
+	lp->rx_ratio = hp100_rx_ratio;	/* can be conf'd with insmod */
+
+	dev->open = hp100_open;
+	dev->stop = hp100_close;
+
+	if (lp->mode == 1)	/* busmaster */
+		dev->hard_start_xmit = hp100_start_xmit_bm;
+	else
+		dev->hard_start_xmit = hp100_start_xmit;
+
+	dev->get_stats = hp100_get_stats;
+	dev->set_multicast_list = &hp100_set_multicast_list;
+
+	/* Ask the card for which IRQ line it is configured */
+	if (bus == HP100_BUS_PCI) {
+		dev->irq = pci_dev->irq;
+	} else {
+		hp100_page(HW_MAP);
+		dev->irq = hp100_inb(IRQ_CHANNEL) & HP100_IRQMASK;
+		if (dev->irq == 2)
+			dev->irq = 9;
+	}
+
+	if (lp->mode == 1)	/* busmaster */
+		dev->dma = 4;
+
+	/* Ask the card for its MAC address and store it for later use. */
+	hp100_page(ID_MAC_ADDR);
+	for (i = uc = 0; i < 6; i++)
+		dev->dev_addr[i] = hp100_inb(LAN_ADDR + i);
+
+	/* Reset statistics (counters) */
+	hp100_clear_stats(lp, ioaddr);
+
+	/* If busmaster mode is wanted, a dma-capable memory area is needed for
+	 * the rx and tx PDLs 
+	 * PCI cards can access the whole PC memory. Therefore GFP_DMA is not
+	 * needed for the allocation of the memory area. 
+	 */
+
+	/* TODO: We do not need this with old cards, where PDLs are stored
+	 * in the cards shared memory area. But currently, busmaster has been
+	 * implemented/tested only with the lassen chip anyway... */
+	if (lp->mode == 1) {	/* busmaster */
+		dma_addr_t page_baddr;
+		/* Get physically continous memory for TX & RX PDLs    */
+		/* Conversion to new PCI API :
+		 * Pages are always aligned and zeroed, no need to it ourself.
+		 * Doc says should be OK for EISA bus as well - Jean II */
+		if ((lp->page_vaddr_algn = pci_alloc_consistent(lp->pci_dev, MAX_RINGSIZE, &page_baddr)) == NULL) {
+			err = -ENOMEM;
+			goto out2;
+		}
+		lp->whatever_offset = ((u_long) page_baddr) - ((u_long) lp->page_vaddr_algn);
+
+#ifdef HP100_DEBUG_BM
+		printk("hp100: %s: Reserved DMA memory from 0x%x to 0x%x\n", dev->name, (u_int) lp->page_vaddr_algn, (u_int) lp->page_vaddr_algn + MAX_RINGSIZE);
+#endif
+		lp->rxrcommit = lp->txrcommit = 0;
+		lp->rxrhead = lp->rxrtail = &(lp->rxring[0]);
+		lp->txrhead = lp->txrtail = &(lp->txring[0]);
+	}
+
+	/* Initialise the card. */
+	/* (I'm not really sure if it's a good idea to do this during probing, but 
+	 * like this it's assured that the lan connection type can be sensed
+	 * correctly)
+	 */
+	hp100_hwinit(dev);
+
+	/* Try to find out which kind of LAN the card is connected to. */
+	lp->lan_type = hp100_sense_lan(dev);
+
+	/* Print out a message what about what we think we have probed. */
+	printk("hp100: at 0x%x, IRQ %d, ", ioaddr, dev->irq);
+	switch (bus) {
+	case HP100_BUS_EISA:
+		printk("EISA");
+		break;
+	case HP100_BUS_PCI:
+		printk("PCI");
+		break;
+	default:
+		printk("ISA");
+		break;
+	}
+	printk(" bus, %dk SRAM (rx/tx %d%%).\n", lp->memory_size >> 10, lp->rx_ratio);
+
+	if (lp->mode == 2) {	/* memory mapped */
+		printk("hp100: Memory area at 0x%lx-0x%lx", mem_ptr_phys,
+				(mem_ptr_phys + (mem_ptr_phys > 0x100000 ? (u_long) lp->memory_size : 16 * 1024)) - 1);
+		if (mem_ptr_virt)
+			printk(" (virtual base %p)", mem_ptr_virt);
+		printk(".\n");
+
+		/* Set for info when doing ifconfig */
+		dev->mem_start = mem_ptr_phys;
+		dev->mem_end = mem_ptr_phys + lp->memory_size;
+	}
+
+	printk("hp100: ");
+	if (lp->lan_type != HP100_LAN_ERR)
+		printk("Adapter is attached to ");
+	switch (lp->lan_type) {
+	case HP100_LAN_100:
+		printk("100Mb/s Voice Grade AnyLAN network.\n");
+		break;
+	case HP100_LAN_10:
+		printk("10Mb/s network (10baseT).\n");
+		break;
+	case HP100_LAN_COAX:
+		printk("10Mb/s network (coax).\n");
+		break;
+	default:
+		printk("Warning! Link down.\n");
+	}
+
+	return 0;
+out2:
+	release_region(ioaddr, HP100_REGION_SIZE);
+out1:
+	return -ENODEV;
+}
+
+/* This procedure puts the card into a stable init state */
+static void hp100_hwinit(struct net_device *dev)
+{
+	int ioaddr = dev->base_addr;
+	struct hp100_private *lp = netdev_priv(dev);
+
+#ifdef HP100_DEBUG_B
+	hp100_outw(0x4202, TRACE);
+	printk("hp100: %s: hwinit\n", dev->name);
+#endif
+
+	/* Initialise the card. -------------------------------------------- */
+
+	/* Clear all pending Ints and disable Ints */
+	hp100_page(PERFORMANCE);
+	hp100_outw(0xfefe, IRQ_MASK);	/* mask off all ints */
+	hp100_outw(0xffff, IRQ_STATUS);	/* clear all pending ints */
+
+	hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
+	hp100_outw(HP100_TRI_INT | HP100_SET_HB, OPTION_LSW);
+
+	if (lp->mode == 1) {
+		hp100_BM_shutdown(dev);	/* disables BM, puts cascade in reset */
+		wait();
+	} else {
+		hp100_outw(HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
+		hp100_cascade_reset(dev, 1);
+		hp100_page(MAC_CTRL);
+		hp100_andb(~(HP100_RX_EN | HP100_TX_EN), MAC_CFG_1);
+	}
+
+	/* Initiate EEPROM reload */
+	hp100_load_eeprom(dev, 0);
+
+	wait();
+
+	/* Go into reset again. */
+	hp100_cascade_reset(dev, 1);
+
+	/* Set Option Registers to a safe state  */
+	hp100_outw(HP100_DEBUG_EN |
+		   HP100_RX_HDR |
+		   HP100_EE_EN |
+		   HP100_BM_WRITE |
+		   HP100_BM_READ | HP100_RESET_HB |
+		   HP100_FAKE_INT |
+		   HP100_INT_EN |
+		   HP100_MEM_EN |
+		   HP100_IO_EN | HP100_RESET_LB, OPTION_LSW);
+
+	hp100_outw(HP100_TRI_INT |
+		   HP100_MMAP_DIS | HP100_SET_HB, OPTION_LSW);
+
+	hp100_outb(HP100_PRIORITY_TX |
+		   HP100_ADV_NXT_PKT |
+		   HP100_TX_CMD | HP100_RESET_LB, OPTION_MSW);
+
+	/* TODO: Configure MMU for Ram Test. */
+	/* TODO: Ram Test. */
+
+	/* Re-check if adapter is still at same i/o location      */
+	/* (If the base i/o in eeprom has been changed but the    */
+	/* registers had not been changed, a reload of the eeprom */
+	/* would move the adapter to the address stored in eeprom */
+
+	/* TODO: Code to implement. */
+
+	/* Until here it was code from HWdiscover procedure. */
+	/* Next comes code from mmuinit procedure of SCO BM driver which is
+	 * called from HWconfigure in the SCO driver.  */
+
+	/* Initialise MMU, eventually switch on Busmaster Mode, initialise 
+	 * multicast filter...
+	 */
+	hp100_mmuinit(dev);
+
+	/* We don't turn the interrupts on here - this is done by start_interface. */
+	wait();			/* TODO: Do we really need this? */
+
+	/* Enable Hardware (e.g. unreset) */
+	hp100_cascade_reset(dev, 0);
+
+	/* ------- initialisation complete ----------- */
+
+	/* Finally try to log in the Hub if there may be a VG connection. */
+	if ((lp->lan_type == HP100_LAN_100) || (lp->lan_type == HP100_LAN_ERR))
+		hp100_login_to_vg_hub(dev, 0);	/* relogin */
+
+}
+
+
+/* 
+ * mmuinit - Reinitialise Cascade MMU and MAC settings.
+ * Note: Must already be in reset and leaves card in reset. 
+ */
+static void hp100_mmuinit(struct net_device *dev)
+{
+	int ioaddr = dev->base_addr;
+	struct hp100_private *lp = netdev_priv(dev);
+	int i;
+
+#ifdef HP100_DEBUG_B
+	hp100_outw(0x4203, TRACE);
+	printk("hp100: %s: mmuinit\n", dev->name);
+#endif
+
+#ifdef HP100_DEBUG
+	if (0 != (hp100_inw(OPTION_LSW) & HP100_HW_RST)) {
+		printk("hp100: %s: Not in reset when entering mmuinit. Fix me.\n", dev->name);
+		return;
+	}
+#endif
+
+	/* Make sure IRQs are masked off and ack'ed. */
+	hp100_page(PERFORMANCE);
+	hp100_outw(0xfefe, IRQ_MASK);	/* mask off all ints */
+	hp100_outw(0xffff, IRQ_STATUS);	/* ack IRQ */
+
+	/*
+	 * Enable Hardware 
+	 * - Clear Debug En, Rx Hdr Pipe, EE En, I/O En, Fake Int and Intr En
+	 * - Set Tri-State Int, Bus Master Rd/Wr, and Mem Map Disable
+	 * - Clear Priority, Advance Pkt and Xmit Cmd
+	 */
+
+	hp100_outw(HP100_DEBUG_EN |
+		   HP100_RX_HDR |
+		   HP100_EE_EN | HP100_RESET_HB |
+		   HP100_IO_EN |
+		   HP100_FAKE_INT |
+		   HP100_INT_EN | HP100_RESET_LB, OPTION_LSW);
+
+	hp100_outw(HP100_TRI_INT | HP100_SET_HB, OPTION_LSW);
+
+	if (lp->mode == 1) {	/* busmaster */
+		hp100_outw(HP100_BM_WRITE |
+			   HP100_BM_READ |
+			   HP100_MMAP_DIS | HP100_SET_HB, OPTION_LSW);
+	} else if (lp->mode == 2) {	/* memory mapped */
+		hp100_outw(HP100_BM_WRITE |
+			   HP100_BM_READ | HP100_RESET_HB, OPTION_LSW);
+		hp100_outw(HP100_MMAP_DIS | HP100_RESET_HB, OPTION_LSW);
+		hp100_outw(HP100_MEM_EN | HP100_SET_LB, OPTION_LSW);
+		hp100_outw(HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
+	} else if (lp->mode == 3) {	/* i/o mapped mode */
+		hp100_outw(HP100_MMAP_DIS | HP100_SET_HB |
+			   HP100_IO_EN | HP100_SET_LB, OPTION_LSW);
+	}
+
+	hp100_page(HW_MAP);
+	hp100_outb(0, EARLYRXCFG);
+	hp100_outw(0, EARLYTXCFG);
+
+	/*
+	 * Enable Bus Master mode
+	 */
+	if (lp->mode == 1) {	/* busmaster */
+		/* Experimental: Set some PCI configuration bits */
+		hp100_page(HW_MAP);
+		hp100_andb(~HP100_PDL_USE3, MODECTRL1);	/* BM engine read maximum */
+		hp100_andb(~HP100_TX_DUALQ, MODECTRL1);	/* No Queue for Priority TX */
+
+		/* PCI Bus failures should result in a Misc. Interrupt */
+		hp100_orb(HP100_EN_BUS_FAIL, MODECTRL2);
+
+		hp100_outw(HP100_BM_READ | HP100_BM_WRITE | HP100_SET_HB, OPTION_LSW);
+		hp100_page(HW_MAP);
+		/* Use Burst Mode and switch on PAGE_CK */
+		hp100_orb(HP100_BM_BURST_RD | HP100_BM_BURST_WR, BM);
+		if ((lp->chip == HP100_CHIPID_RAINIER) || (lp->chip == HP100_CHIPID_SHASTA))
+			hp100_orb(HP100_BM_PAGE_CK, BM);
+		hp100_orb(HP100_BM_MASTER, BM);
+	} else {		/* not busmaster */
+
+		hp100_page(HW_MAP);
+		hp100_andb(~HP100_BM_MASTER, BM);
+	}
+
+	/*
+	 * Divide card memory into regions for Rx, Tx and, if non-ETR chip, PDLs
+	 */
+	hp100_page(MMU_CFG);
+	if (lp->mode == 1) {	/* only needed for Busmaster */
+		int xmit_stop, recv_stop;
+
+		if ((lp->chip == HP100_CHIPID_RAINIER)
+		    || (lp->chip == HP100_CHIPID_SHASTA)) {
+			int pdl_stop;
+
+			/*
+			 * Each pdl is 508 bytes long. (63 frags * 4 bytes for address and
+			 * 4 bytes for header). We will leave NUM_RXPDLS * 508 (rounded
+			 * to the next higher 1k boundary) bytes for the rx-pdl's
+			 * Note: For non-etr chips the transmit stop register must be
+			 * programmed on a 1k boundary, i.e. bits 9:0 must be zero. 
+			 */
+			pdl_stop = lp->memory_size;
+			xmit_stop = (pdl_stop - 508 * (MAX_RX_PDL) - 16) & ~(0x03ff);
+			recv_stop = (xmit_stop * (lp->rx_ratio) / 100) & ~(0x03ff);
+			hp100_outw((pdl_stop >> 4) - 1, PDL_MEM_STOP);
+#ifdef HP100_DEBUG_BM
+			printk("hp100: %s: PDL_STOP = 0x%x\n", dev->name, pdl_stop);
+#endif
+		} else {
+			/* ETR chip (Lassen) in busmaster mode */
+			xmit_stop = (lp->memory_size) - 1;
+			recv_stop = ((lp->memory_size * lp->rx_ratio) / 100) & ~(0x03ff);
+		}
+
+		hp100_outw(xmit_stop >> 4, TX_MEM_STOP);
+		hp100_outw(recv_stop >> 4, RX_MEM_STOP);
+#ifdef HP100_DEBUG_BM
+		printk("hp100: %s: TX_STOP  = 0x%x\n", dev->name, xmit_stop >> 4);
+		printk("hp100: %s: RX_STOP  = 0x%x\n", dev->name, recv_stop >> 4);
+#endif
+	} else {
+		/* Slave modes (memory mapped and programmed io)  */
+		hp100_outw((((lp->memory_size * lp->rx_ratio) / 100) >> 4), RX_MEM_STOP);
+		hp100_outw(((lp->memory_size - 1) >> 4), TX_MEM_STOP);
+#ifdef HP100_DEBUG
+		printk("hp100: %s: TX_MEM_STOP: 0x%x\n", dev->name, hp100_inw(TX_MEM_STOP));
+		printk("hp100: %s: RX_MEM_STOP: 0x%x\n", dev->name, hp100_inw(RX_MEM_STOP));
+#endif
+	}
+
+	/* Write MAC address into page 1 */
+	hp100_page(MAC_ADDRESS);
+	for (i = 0; i < 6; i++)
+		hp100_outb(dev->dev_addr[i], MAC_ADDR + i);
+
+	/* Zero the multicast hash registers */
+	for (i = 0; i < 8; i++)
+		hp100_outb(0x0, HASH_BYTE0 + i);
+
+	/* Set up MAC defaults */
+	hp100_page(MAC_CTRL);
+
+	/* Go to LAN Page and zero all filter bits */
+	/* Zero accept error, accept multicast, accept broadcast and accept */
+	/* all directed packet bits */
+	hp100_andb(~(HP100_RX_EN |
+		     HP100_TX_EN |
+		     HP100_ACC_ERRORED |
+		     HP100_ACC_MC |
+		     HP100_ACC_BC | HP100_ACC_PHY), MAC_CFG_1);
+
+	hp100_outb(0x00, MAC_CFG_2);
+
+	/* Zero the frame format bit. This works around a training bug in the */
+	/* new hubs. */
+	hp100_outb(0x00, VG_LAN_CFG_2);	/* (use 802.3) */
+
+	if (lp->priority_tx)
+		hp100_outb(HP100_PRIORITY_TX | HP100_SET_LB, OPTION_MSW);
+	else
+		hp100_outb(HP100_PRIORITY_TX | HP100_RESET_LB, OPTION_MSW);
+
+	hp100_outb(HP100_ADV_NXT_PKT |
+		   HP100_TX_CMD | HP100_RESET_LB, OPTION_MSW);
+
+	/* If busmaster, initialize the PDLs */
+	if (lp->mode == 1)
+		hp100_init_pdls(dev);
+
+	/* Go to performance page and initalize isr and imr registers */
+	hp100_page(PERFORMANCE);
+	hp100_outw(0xfefe, IRQ_MASK);	/* mask off all ints */
+	hp100_outw(0xffff, IRQ_STATUS);	/* ack IRQ */
+}
+
+/*
+ *  open/close functions
+ */
+
+static int hp100_open(struct net_device *dev)
+{
+	struct hp100_private *lp = netdev_priv(dev);
+#ifdef HP100_DEBUG_B
+	int ioaddr = dev->base_addr;
+#endif
+
+#ifdef HP100_DEBUG_B
+	hp100_outw(0x4204, TRACE);
+	printk("hp100: %s: open\n", dev->name);
+#endif
+
+	/* New: if bus is PCI or EISA, interrupts might be shared interrupts */
+	if (request_irq(dev->irq, hp100_interrupt,
+			lp->bus == HP100_BUS_PCI || lp->bus ==
+			HP100_BUS_EISA ? SA_SHIRQ : SA_INTERRUPT,
+			"hp100", dev)) {
+		printk("hp100: %s: unable to get IRQ %d\n", dev->name, dev->irq);
+		return -EAGAIN;