hippi: Move the HIPPI driver

Move the HIPPI driver into drivers/net/hippi/ and make the
necessary Kconfig and Makefile changes.

CC: Jes Sorensen <jes@wildopensource.com>
CC: Jes Sorensen <jes@trained-monkey.org>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 0 insertions, 1716 deletions

diff --git a/drivers/net/rrunner.c b/drivers/net/rrunner.c
deleted file mode 100644
index e68c941926f1..000000000000
--- a/drivers/net/rrunner.c
+++ /dev/null
@@ -1,1716 +0,0 @@
-/*
- * rrunner.c: Linux driver for the Essential RoadRunner HIPPI board.
- *
- * Copyright (C) 1998-2002 by Jes Sorensen, <jes@wildopensource.com>.
- *
- * Thanks to Essential Communication for providing us with hardware
- * and very comprehensive documentation without which I would not have
- * been able to write this driver. A special thank you to John Gibbon
- * for sorting out the legal issues, with the NDA, allowing the code to
- * be released under the GPL.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * Thanks to Jayaram Bhat from ODS/Essential for fixing some of the
- * stupid bugs in my code.
- *
- * Softnet support and various other patches from Val Henson of
- * ODS/Essential.
- *
- * PCI DMA mapping code partly based on work by Francois Romieu.
- */
-
-
-#define DEBUG 1
-#define RX_DMA_SKBUFF 1
-#define PKT_COPY_THRESHOLD 512
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/errno.h>
-#include <linux/ioport.h>
-#include <linux/pci.h>
-#include <linux/kernel.h>
-#include <linux/netdevice.h>
-#include <linux/hippidevice.h>
-#include <linux/skbuff.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/mm.h>
-#include <linux/slab.h>
-#include <net/sock.h>
-
-#include <asm/system.h>
-#include <asm/cache.h>
-#include <asm/byteorder.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/uaccess.h>
-
-#define rr_if_busy(dev)     netif_queue_stopped(dev)
-#define rr_if_running(dev)  netif_running(dev)
-
-#include "rrunner.h"
-
-#define RUN_AT(x) (jiffies + (x))
-
-
-MODULE_AUTHOR("Jes Sorensen <jes@wildopensource.com>");
-MODULE_DESCRIPTION("Essential RoadRunner HIPPI driver");
-MODULE_LICENSE("GPL");
-
-static char version[] __devinitdata = "rrunner.c: v0.50 11/11/2002  Jes Sorensen (jes@wildopensource.com)\n";
-
-
-static const struct net_device_ops rr_netdev_ops = {
-	.ndo_open 		= rr_open,
-	.ndo_stop		= rr_close,
-	.ndo_do_ioctl		= rr_ioctl,
-	.ndo_start_xmit		= rr_start_xmit,
-	.ndo_change_mtu		= hippi_change_mtu,
-	.ndo_set_mac_address	= hippi_mac_addr,
-};
-
-/*
- * Implementation notes:
- *
- * The DMA engine only allows for DMA within physical 64KB chunks of
- * memory. The current approach of the driver (and stack) is to use
- * linear blocks of memory for the skbuffs. However, as the data block
- * is always the first part of the skb and skbs are 2^n aligned so we
- * are guarantted to get the whole block within one 64KB align 64KB
- * chunk.
- *
- * On the long term, relying on being able to allocate 64KB linear
- * chunks of memory is not feasible and the skb handling code and the
- * stack will need to know about I/O vectors or something similar.
- */
-
-static int __devinit rr_init_one(struct pci_dev *pdev,
-	const struct pci_device_id *ent)
-{
-	struct net_device *dev;
-	static int version_disp;
-	u8 pci_latency;
-	struct rr_private *rrpriv;
-	void *tmpptr;
-	dma_addr_t ring_dma;
-	int ret = -ENOMEM;
-
-	dev = alloc_hippi_dev(sizeof(struct rr_private));
-	if (!dev)
-		goto out3;
-
-	ret = pci_enable_device(pdev);
-	if (ret) {
-		ret = -ENODEV;
-		goto out2;
-	}
-
-	rrpriv = netdev_priv(dev);
-
-	SET_NETDEV_DEV(dev, &pdev->dev);
-
-	if (pci_request_regions(pdev, "rrunner")) {
-		ret = -EIO;
-		goto out;
-	}
-
-	pci_set_drvdata(pdev, dev);
-
-	rrpriv->pci_dev = pdev;
-
-	spin_lock_init(&rrpriv->lock);
-
-	dev->irq = pdev->irq;
-	dev->netdev_ops = &rr_netdev_ops;
-
-	dev->base_addr = pci_resource_start(pdev, 0);
-
-	/* display version info if adapter is found */
-	if (!version_disp) {
-		/* set display flag to TRUE so that */
-		/* we only display this string ONCE */
-		version_disp = 1;
-		printk(version);
-	}
-
-	pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &pci_latency);
-	if (pci_latency <= 0x58){
-		pci_latency = 0x58;
-		pci_write_config_byte(pdev, PCI_LATENCY_TIMER, pci_latency);
-	}
-
-	pci_set_master(pdev);
-
-	printk(KERN_INFO "%s: Essential RoadRunner serial HIPPI "
-	       "at 0x%08lx, irq %i, PCI latency %i\n", dev->name,
-	       dev->base_addr, dev->irq, pci_latency);
-
-	/*
-	 * Remap the regs into kernel space.
-	 */
-
-	rrpriv->regs = ioremap(dev->base_addr, 0x1000);
-
-	if (!rrpriv->regs){
-		printk(KERN_ERR "%s:  Unable to map I/O register, "
-			"RoadRunner will be disabled.\n", dev->name);
-		ret = -EIO;
-		goto out;
-	}
-
-	tmpptr = pci_alloc_consistent(pdev, TX_TOTAL_SIZE, &ring_dma);
-	rrpriv->tx_ring = tmpptr;
-	rrpriv->tx_ring_dma = ring_dma;
-
-	if (!tmpptr) {
-		ret = -ENOMEM;
-		goto out;
-	}
-
-	tmpptr = pci_alloc_consistent(pdev, RX_TOTAL_SIZE, &ring_dma);
-	rrpriv->rx_ring = tmpptr;
-	rrpriv->rx_ring_dma = ring_dma;
-
-	if (!tmpptr) {
-		ret = -ENOMEM;
-		goto out;
-	}
-
-	tmpptr = pci_alloc_consistent(pdev, EVT_RING_SIZE, &ring_dma);
-	rrpriv->evt_ring = tmpptr;
-	rrpriv->evt_ring_dma = ring_dma;
-
-	if (!tmpptr) {
-		ret = -ENOMEM;
-		goto out;
-	}
-
-	/*
-	 * Don't access any register before this point!
-	 */
-#ifdef __BIG_ENDIAN
-	writel(readl(&rrpriv->regs->HostCtrl) | NO_SWAP,
-		&rrpriv->regs->HostCtrl);
-#endif
-	/*
-	 * Need to add a case for little-endian 64-bit hosts here.
-	 */
-
-	rr_init(dev);
-
-	dev->base_addr = 0;
-
-	ret = register_netdev(dev);
-	if (ret)
-		goto out;
-	return 0;
-
- out:
-	if (rrpriv->rx_ring)
-		pci_free_consistent(pdev, RX_TOTAL_SIZE, rrpriv->rx_ring,
-				    rrpriv->rx_ring_dma);
-	if (rrpriv->tx_ring)
-		pci_free_consistent(pdev, TX_TOTAL_SIZE, rrpriv->tx_ring,
-				    rrpriv->tx_ring_dma);
-	if (rrpriv->regs)
-		iounmap(rrpriv->regs);
-	if (pdev) {
-		pci_release_regions(pdev);
-		pci_set_drvdata(pdev, NULL);
-	}
- out2:
-	free_netdev(dev);
- out3:
-	return ret;
-}
-
-static void __devexit rr_remove_one (struct pci_dev *pdev)
-{
-	struct net_device *dev = pci_get_drvdata(pdev);
-
-	if (dev) {
-		struct rr_private *rr = netdev_priv(dev);
-
-		if (!(readl(&rr->regs->HostCtrl) & NIC_HALTED)){
-			printk(KERN_ERR "%s: trying to unload running NIC\n",
-			       dev->name);
-			writel(HALT_NIC, &rr->regs->HostCtrl);
-		}
-
-		pci_free_consistent(pdev, EVT_RING_SIZE, rr->evt_ring,
-				    rr->evt_ring_dma);
-		pci_free_consistent(pdev, RX_TOTAL_SIZE, rr->rx_ring,
-				    rr->rx_ring_dma);
-		pci_free_consistent(pdev, TX_TOTAL_SIZE, rr->tx_ring,
-				    rr->tx_ring_dma);
-		unregister_netdev(dev);
-		iounmap(rr->regs);
-		free_netdev(dev);
-		pci_release_regions(pdev);
-		pci_disable_device(pdev);
-		pci_set_drvdata(pdev, NULL);
-	}
-}
-
-
-/*
- * Commands are considered to be slow, thus there is no reason to
- * inline this.
- */
-static void rr_issue_cmd(struct rr_private *rrpriv, struct cmd *cmd)
-{
-	struct rr_regs __iomem *regs;
-	u32 idx;
-
-	regs = rrpriv->regs;
-	/*
-	 * This is temporary - it will go away in the final version.
-	 * We probably also want to make this function inline.
-	 */
-	if (readl(&regs->HostCtrl) & NIC_HALTED){
-		printk("issuing command for halted NIC, code 0x%x, "
-		       "HostCtrl %08x\n", cmd->code, readl(&regs->HostCtrl));
-		if (readl(&regs->Mode) & FATAL_ERR)
-			printk("error codes Fail1 %02x, Fail2 %02x\n",
-			       readl(&regs->Fail1), readl(&regs->Fail2));
-	}
-
-	idx = rrpriv->info->cmd_ctrl.pi;
-
-	writel(*(u32*)(cmd), &regs->CmdRing[idx]);
-	wmb();
-
-	idx = (idx - 1) % CMD_RING_ENTRIES;
-	rrpriv->info->cmd_ctrl.pi = idx;
-	wmb();
-
-	if (readl(&regs->Mode) & FATAL_ERR)
-		printk("error code %02x\n", readl(&regs->Fail1));
-}
-
-
-/*
- * Reset the board in a sensible manner. The NIC is already halted
- * when we get here and a spin-lock is held.
- */
-static int rr_reset(struct net_device *dev)
-{
-	struct rr_private *rrpriv;
-	struct rr_regs __iomem *regs;
-	u32 start_pc;
-	int i;
-
-	rrpriv = netdev_priv(dev);
-	regs = rrpriv->regs;
-
-	rr_load_firmware(dev);
-
-	writel(0x01000000, &regs->TX_state);
-	writel(0xff800000, &regs->RX_state);
-	writel(0, &regs->AssistState);
-	writel(CLEAR_INTA, &regs->LocalCtrl);
-	writel(0x01, &regs->BrkPt);
-	writel(0, &regs->Timer);
-	writel(0, &regs->TimerRef);
-	writel(RESET_DMA, &regs->DmaReadState);
-	writel(RESET_DMA, &regs->DmaWriteState);
-	writel(0, &regs->DmaWriteHostHi);
-	writel(0, &regs->DmaWriteHostLo);
-	writel(0, &regs->DmaReadHostHi);
-	writel(0, &regs->DmaReadHostLo);
-	writel(0, &regs->DmaReadLen);
-	writel(0, &regs->DmaWriteLen);
-	writel(0, &regs->DmaWriteLcl);
-	writel(0, &regs->DmaWriteIPchecksum);
-	writel(0, &regs->DmaReadLcl);
-	writel(0, &regs->DmaReadIPchecksum);
-	writel(0, &regs->PciState);
-#if (BITS_PER_LONG == 64) && defined __LITTLE_ENDIAN
-	writel(SWAP_DATA | PTR64BIT | PTR_WD_SWAP, &regs->Mode);
-#elif (BITS_PER_LONG == 64)
-	writel(SWAP_DATA | PTR64BIT | PTR_WD_NOSWAP, &regs->Mode);
-#else
-	writel(SWAP_DATA | PTR32BIT | PTR_WD_NOSWAP, &regs->Mode);
-#endif
-
-#if 0
-	/*
-	 * Don't worry, this is just black magic.
-	 */
-	writel(0xdf000, &regs->RxBase);
-	writel(0xdf000, &regs->RxPrd);
-	writel(0xdf000, &regs->RxCon);
-	writel(0xce000, &regs->TxBase);
-	writel(0xce000, &regs->TxPrd);
-	writel(0xce000, &regs->TxCon);
-	writel(0, &regs->RxIndPro);
-	writel(0, &regs->RxIndCon);
-	writel(0, &regs->RxIndRef);
-	writel(0, &regs->TxIndPro);
-	writel(0, &regs->TxIndCon);
-	writel(0, &regs->TxIndRef);
-	writel(0xcc000, &regs->pad10[0]);
-	writel(0, &regs->DrCmndPro);
-	writel(0, &regs->DrCmndCon);
-	writel(0, &regs->DwCmndPro);
-	writel(0, &regs->DwCmndCon);
-	writel(0, &regs->DwCmndRef);
-	writel(0, &regs->DrDataPro);
-	writel(0, &regs->DrDataCon);
-	writel(0, &regs->DrDataRef);
-	writel(0, &regs->DwDataPro);
-	writel(0, &regs->DwDataCon);
-	writel(0, &regs->DwDataRef);
-#endif
-
-	writel(0xffffffff, &regs->MbEvent);
-	writel(0, &regs->Event);
-
-	writel(0, &regs->TxPi);
-	writel(0, &regs->IpRxPi);
-
-	writel(0, &regs->EvtCon);
-	writel(0, &regs->EvtPrd);
-
-	rrpriv->info->evt_ctrl.pi = 0;
-
-	for (i = 0; i < CMD_RING_ENTRIES; i++)
-		writel(0, &regs->CmdRing[i]);
-
-/*
- * Why 32 ? is this not cache line size dependent?
- */
-	writel(RBURST_64|WBURST_64, &regs->PciState);
-	wmb();
-
-	start_pc = rr_read_eeprom_word(rrpriv,
-			offsetof(struct eeprom, rncd_info.FwStart));
-
-#if (DEBUG > 1)
-	printk("%s: Executing firmware at address 0x%06x\n",
-	       dev->name, start_pc);
-#endif
-
-	writel(start_pc + 0x800, &regs->Pc);
-	wmb();
-	udelay(5);
-
-	writel(start_pc, &regs->Pc);
-	wmb();
-
-	return 0;
-}
-
-
-/*
- * Read a string from the EEPROM.
- */
-static unsigned int rr_read_eeprom(struct rr_private *rrpriv,
-				unsigned long offset,
-				unsigned char *buf,
-				unsigned long length)
-{
-	struct rr_regs __iomem *regs = rrpriv->regs;
-	u32 misc, io, host, i;
-
-	io = readl(&regs->ExtIo);
-	writel(0, &regs->ExtIo);
-	misc = readl(&regs->LocalCtrl);
-	writel(0, &regs->LocalCtrl);
-	host = readl(&regs->HostCtrl);
-	writel(host | HALT_NIC, &regs->HostCtrl);
-	mb();
-
-	for (i = 0; i < length; i++){
-		writel((EEPROM_BASE + ((offset+i) << 3)), &regs->WinBase);
-		mb();
-		buf[i] = (readl(&regs->WinData) >> 24) & 0xff;
-		mb();
-	}
-
-	writel(host, &regs->HostCtrl);
-	writel(misc, &regs->LocalCtrl);
-	writel(io, &regs->ExtIo);
-	mb();
-	return i;
-}
-
-
-/*
- * Shortcut to read one word (4 bytes) out of the EEPROM and convert
- * it to our CPU byte-order.
- */
-static u32 rr_read_eeprom_word(struct rr_private *rrpriv,
-			    size_t offset)
-{
-	__be32 word;
-
-	if ((rr_read_eeprom(rrpriv, offset,
-			    (unsigned char *)&word, 4) == 4))
-		return be32_to_cpu(word);
-	return 0;
-}
-
-
-/*
- * Write a string to the EEPROM.
- *
- * This is only called when the firmware is not running.
- */
-static unsigned int write_eeprom(struct rr_private *rrpriv,
-				 unsigned long offset,
-				 unsigned char *buf,
-				 unsigned long length)
-{
-	struct rr_regs __iomem *regs = rrpriv->regs;
-	u32 misc, io, data, i, j, ready, error = 0;
-
-	io = readl(&regs->ExtIo);
-	writel(0, &regs->ExtIo);
-	misc = readl(&regs->LocalCtrl);
-	writel(ENABLE_EEPROM_WRITE, &regs->LocalCtrl);
-	mb();
-
-	for (i = 0; i < length; i++){
-		writel((EEPROM_BASE + ((offset+i) << 3)), &regs->WinBase);
-		mb();
-		data = buf[i] << 24;
-		/*
-		 * Only try to write the data if it is not the same
-		 * value already.
-		 */
-		if ((readl(&regs->WinData) & 0xff000000) != data){
-			writel(data, &regs->WinData);
-			ready = 0;
-			j = 0;
-			mb();
-			while(!ready){
-				udelay(20);
-				if ((readl(&regs->WinData) & 0xff000000) ==
-				    data)
-					ready = 1;
-				mb();
-				if (j++ > 5000){
-					printk("data mismatch: %08x, "
-					       "WinData %08x\n", data,
-					       readl(&regs->WinData));
-					ready = 1;
-					error = 1;
-				}
-			}
-		}
-	}
-
-	writel(misc, &regs->LocalCtrl);
-	writel(io, &regs->ExtIo);
-	mb();
-
-	return error;
-}
-
-
-static int __devinit rr_init(struct net_device *dev)
-{
-	struct rr_private *rrpriv;
-	struct rr_regs __iomem *regs;
-	u32 sram_size, rev;
-
-	rrpriv = netdev_priv(dev);
-	regs = rrpriv->regs;
-
-	rev = readl(&regs->FwRev);
-	rrpriv->fw_rev = rev;
-	if (rev > 0x00020024)
-		printk("  Firmware revision: %i.%i.%i\n", (rev >> 16),
-		       ((rev >> 8) & 0xff), (rev & 0xff));
-	else if (rev >= 0x00020000) {
-		printk("  Firmware revision: %i.%i.%i (2.0.37 or "
-		       "later is recommended)\n", (rev >> 16),
-		       ((rev >> 8) & 0xff), (rev & 0xff));
-	}else{
-		printk("  Firmware revision too old: %i.%i.%i, please "
-		       "upgrade to 2.0.37 or later.\n",
-		       (rev >> 16), ((rev >> 8) & 0xff), (rev & 0xff));
-	}
-
-#if (DEBUG > 2)
-	printk("  Maximum receive rings %i\n", readl(&regs->MaxRxRng));
-#endif
-
-	/*
-	 * Read the hardware address from the eeprom.  The HW address
-	 * is not really necessary for HIPPI but awfully convenient.
-	 * The pointer arithmetic to put it in dev_addr is ugly, but
-	 * Donald Becker does it this way for the GigE version of this
-	 * card and it's shorter and more portable than any
-	 * other method I've seen.  -VAL
-	 */
-
-	*(__be16 *)(dev->dev_addr) =
-	  htons(rr_read_eeprom_word(rrpriv, offsetof(struct eeprom, manf.BoardULA)));
-	*(__be32 *)(dev->dev_addr+2) =
-	  htonl(rr_read_eeprom_word(rrpriv, offsetof(struct eeprom, manf.BoardULA[4])));
-
-	printk("  MAC: %pM\n", dev->dev_addr);
-
-	sram_size = rr_read_eeprom_word(rrpriv, 8);
-	printk("  SRAM size 0x%06x\n", sram_size);
-
-	return 0;
-}
-
-
-static int rr_init1(struct net_device *dev)
-{
-	struct rr_private *rrpriv;
-	struct rr_regs __iomem *regs;
-	unsigned long myjif, flags;
-	struct cmd cmd;
-	u32 hostctrl;
-	int ecode = 0;
-	short i;
-
-	rrpriv = netdev_priv(dev);
-	regs = rrpriv->regs;
-
-	spin_lock_irqsave(&rrpriv->lock, flags);
-
-	hostctrl = readl(&regs->HostCtrl);
-	writel(hostctrl | HALT_NIC | RR_CLEAR_INT, &regs->HostCtrl);
-	wmb();
-
-	if (hostctrl & PARITY_ERR){
-		printk("%s: Parity error halting NIC - this is serious!\n",
-		       dev->name);
-		spin_unlock_irqrestore(&rrpriv->lock, flags);
-		ecode = -EFAULT;
-		goto error;
-	}
-
-	set_rxaddr(regs, rrpriv->rx_ctrl_dma);
-	set_infoaddr(regs, rrpriv->info_dma);
-
-	rrpriv->info->evt_ctrl.entry_size = sizeof(struct event);
-	rrpriv->info->evt_ctrl.entries = EVT_RING_ENTRIES;
-	rrpriv->info->evt_ctrl.mode = 0;
-	rrpriv->info->evt_ctrl.pi = 0;
-	set_rraddr(&rrpriv->info->evt_ctrl.rngptr, rrpriv->evt_ring_dma);
-
-	rrpriv->info->cmd_ctrl.entry_size = sizeof(struct cmd);
-	rrpriv->info->cmd_ctrl.entries = CMD_RING_ENTRIES;
-	rrpriv->info->cmd_ctrl.mode = 0;
-	rrpriv->info->cmd_ctrl.pi = 15;
-
-	for (i = 0; i < CMD_RING_ENTRIES; i++) {
-		writel(0, &regs->CmdRing[i]);
-	}
-
-	for (i = 0; i < TX_RING_ENTRIES; i++) {
-		rrpriv->tx_ring[i].size = 0;
-		set_rraddr(&rrpriv->tx_ring[i].addr, 0);
-		rrpriv->tx_skbuff[i] = NULL;
-	}
-	rrpriv->info->tx_ctrl.entry_size = sizeof(struct tx_desc);
-	rrpriv->info->tx_ctrl.entries = TX_RING_ENTRIES;
-	rrpriv->info->tx_ctrl.mode = 0;
-	rrpriv->info->tx_ctrl.pi = 0;
-	set_rraddr(&rrpriv->info->tx_ctrl.rngptr, rrpriv->tx_ring_dma);
-
-	/*
-	 * Set dirty_tx before we start receiving interrupts, otherwise
-	 * the interrupt handler might think it is supposed to process
-	 * tx ints before we are up and running, which may cause a null
-	 * pointer access in the int handler.
-	 */
-	rrpriv->tx_full = 0;
-	rrpriv->cur_rx = 0;
-	rrpriv->dirty_rx = rrpriv->dirty_tx = 0;
-
-	rr_reset(dev);
-
-	/* Tuning values */
-	writel(0x5000, &regs->ConRetry);
-	writel(0x100, &regs->ConRetryTmr);
-	writel(0x500000, &regs->ConTmout);
- 	writel(0x60, &regs->IntrTmr);
-	writel(0x500000, &regs->TxDataMvTimeout);
-	writel(0x200000, &regs->RxDataMvTimeout);
- 	writel(0x80, &regs->WriteDmaThresh);
- 	writel(0x80, &regs->ReadDmaThresh);
-
-	rrpriv->fw_running = 0;
-	wmb();
-
-	hostctrl &= ~(HALT_NIC | INVALID_INST_B | PARITY_ERR);
-	writel(hostctrl, &regs->HostCtrl);
-	wmb();
-
-	spin_unlock_irqrestore(&rrpriv->lock, flags);
-
-	for (i = 0; i < RX_RING_ENTRIES; i++) {
-		struct sk_buff *skb;
-		dma_addr_t addr;
-
-		rrpriv->rx_ring[i].mode = 0;
-		skb = alloc_skb(dev->mtu + HIPPI_HLEN, GFP_ATOMIC);
-		if (!skb) {
-			printk(KERN_WARNING "%s: Unable to allocate memory "
-			       "for receive ring - halting NIC\n", dev->name);
-			ecode = -ENOMEM;
-			goto error;
-		}
-		rrpriv->rx_skbuff[i] = skb;
-	        addr = pci_map_single(rrpriv->pci_dev, skb->data,
-			dev->mtu + HIPPI_HLEN, PCI_DMA_FROMDEVICE);
-		/*
-		 * Sanity test to see if we conflict with the DMA
-		 * limitations of the Roadrunner.
-		 */
-		if ((((unsigned long)skb->data) & 0xfff) > ~65320)
-			printk("skb alloc error\n");
-
-		set_rraddr(&rrpriv->rx_ring[i].addr, addr);
-		rrpriv->rx_ring[i].size = dev->mtu + HIPPI_HLEN;
-	}
-
-	rrpriv->rx_ctrl[4].entry_size = sizeof(struct rx_desc);
-	rrpriv->rx_ctrl[4].entries = RX_RING_ENTRIES;
-	rrpriv->rx_ctrl[4].mode = 8;
-	rrpriv->rx_ctrl[4].pi = 0;
-	wmb();
-	set_rraddr(&rrpriv->rx_ctrl[4].rngptr, rrpriv->rx_ring_dma);
-
-	udelay(1000);
-
-	/*
-	 * Now start the FirmWare.
-	 */
-	cmd.code = C_START_FW;
-	cmd.ring = 0;
-	cmd.index = 0;
-
-	rr_issue_cmd(rrpriv, &cmd);
-
-	/*
-	 * Give the FirmWare time to chew on the `get running' command.
-	 */
-	myjif = jiffies + 5 * HZ;
-	while (time_before(jiffies, myjif) && !rrpriv->fw_running)
-		cpu_relax();
-
-	netif_start_queue(dev);
-
-	return ecode;
-
- error:
-	/*
-	 * We might have gotten here because we are out of memory,
-	 * make sure we release everything we allocated before failing
-	 */
-	for (i = 0; i < RX_RING_ENTRIES; i++) {
-		struct sk_buff *skb = rrpriv->rx_skbuff[i];
-
-		if (skb) {
-	        	pci_unmap_single(rrpriv->pci_dev,
-					 rrpriv->rx_ring[i].addr.addrlo,
-					 dev->mtu + HIPPI_HLEN,
-					 PCI_DMA_FROMDEVICE);
-			rrpriv->rx_ring[i].size = 0;
-			set_rraddr(&rrpriv->rx_ring[i].addr, 0);
-			dev_kfree_skb(skb);
-			rrpriv->rx_skbuff[i] = NULL;
-		}
-	}
-	return ecode;
-}
-
-
-/*
- * All events are considered to be slow (RX/TX ints do not generate
- * events) and are handled here, outside the main interrupt handler,
- * to reduce the size of the handler.
- */
-static u32 rr_handle_event(struct net_device *dev, u32 prodidx, u32 eidx)
-{
-	struct rr_private *rrpriv;
-	struct rr_regs __iomem *regs;
-	u32 tmp;
-
-	rrpriv = netdev_priv(dev);
-	regs = rrpriv->regs;
-
-	while (prodidx != eidx){
-		switch (rrpriv->evt_ring[eidx].code){
-		case E_NIC_UP:
-			tmp = readl(&regs->FwRev);
-			printk(KERN_INFO "%s: Firmware revision %i.%i.%i "
-			       "up and running\n", dev->name,
-			       (tmp >> 16), ((tmp >> 8) & 0xff), (tmp & 0xff));
-			rrpriv->fw_running = 1;
-			writel(RX_RING_ENTRIES - 1, &regs->IpRxPi);
-			wmb();
-			break;
-		case E_LINK_ON:
-			printk(KERN_INFO "%s: Optical link ON\n", dev->name);
-			break;
-		case E_LINK_OFF:
-			printk(KERN_INFO "%s: Optical link OFF\n", dev->name);
-			break;
-		case E_RX_IDLE:
-			printk(KERN_WARNING "%s: RX data not moving\n",
-			       dev->name);
-			goto drop;
-		case E_WATCHDOG:
-			printk(KERN_INFO "%s: The watchdog is here to see "
-			       "us\n", dev->name);
-			break;
-		case E_INTERN_ERR:
-			printk(KERN_ERR "%s: HIPPI Internal NIC error\n",
-			       dev->name);
-			writel(readl(&regs->HostCtrl)|HALT_NIC|RR_CLEAR_INT,
-			       &regs->HostCtrl);
-			wmb();
-			break;
-		case E_HOST_ERR:
-			printk(KERN_ERR "%s: Host software error\n",
-			       dev->name);
-			writel(readl(&regs->HostCtrl)|HALT_NIC|RR_CLEAR_INT,
-			       &regs->HostCtrl);
-			wmb();
-			break;
-		/*
-		 * TX events.
-		 */
-		case E_CON_REJ:
-			printk(KERN_WARNING "%s: Connection rejected\n",
-			       dev->name);
-			dev->stats.tx_aborted_errors++;
-			break;
-		case E_CON_TMOUT:
-			printk(KERN_WARNING "%s: Connection timeout\n",
-			       dev->name);
-			break;
-		case E_DISC_ERR:
-			printk(KERN_WARNING "%s: HIPPI disconnect error\n",
-			       dev->name);
-			dev->stats.tx_aborted_errors++;
-			break;
-		case E_INT_PRTY:
-			printk(KERN_ERR "%s: HIPPI Internal Parity error\n",
-			       dev->name);
-			writel(readl(&regs->HostCtrl)|HALT_NIC|RR_CLEAR_INT,
-			       &regs->HostCtrl);
-			wmb();
-			break;
-		case E_TX_IDLE:
-			printk(KERN_WARNING "%s: Transmitter idle\n",
-			       dev->name);
-			break;
-		case E_TX_LINK_DROP:
-			printk(KERN_WARNING "%s: Link lost during transmit\n",
-			       dev->name);
-			dev->stats.tx_aborted_errors++;
-			writel(readl(&regs->HostCtrl)|HALT_NIC|RR_CLEAR_INT,
-			       &regs->HostCtrl);
-			wmb();
-			break;
-		case E_TX_INV_RNG:
-			printk(KERN_ERR "%s: Invalid send ring block\n",
-			       dev->name);
-			writel(readl(&regs->HostCtrl)|HALT_NIC|RR_CLEAR_INT,
-			       &regs->HostCtrl);
-			wmb();
-			break;
-		case E_TX_INV_BUF:
-			printk(KERN_ERR "%s: Invalid send buffer address\n",
-			       dev->name);
-			writel(readl(&regs->HostCtrl)|HALT_NIC|RR_CLEAR_INT,
-			       &regs->HostCtrl);
-			wmb();
-			break;
-		case E_TX_INV_DSC:
-			printk(KERN_ERR "%s: Invalid descriptor address\n",
-			       dev->name);
-			writel(readl(&regs->HostCtrl)|HALT_NIC|RR_CLEAR_INT,
-			       &regs->HostCtrl);
-			wmb();
-			break;
-		/*
-		 * RX events.
-		 */
-		case E_RX_RNG_OUT:
-			printk(KERN_INFO "%s: Receive ring full\n", dev->name);
-			break;
-
-		case E_RX_PAR_ERR:
-			printk(KERN_WARNING "%s: Receive parity error\n",
-			       dev->name);
-			goto drop;
-		case E_RX_LLRC_ERR:
-			printk(KERN_WARNING "%s: Receive LLRC error\n",
-			       dev->name);
-			goto drop;
-		case E_PKT_LN_ERR:
-			printk(KERN_WARNING "%s: Receive packet length "
-			       "error\n", dev->name);
-			goto drop;
-		case E_DTA_CKSM_ERR:
-			printk(KERN_WARNING "%s: Data checksum error\n",
-			       dev->name);
-			goto drop;
-		case E_SHT_BST:
-			printk(KERN_WARNING "%s: Unexpected short burst "
-			       "error\n", dev->name);
-			goto drop;
-		case E_STATE_ERR:
-			printk(KERN_WARNING "%s: Recv. state transition"
-			       " error\n", dev->name);
-			goto drop;
-		case E_UNEXP_DATA:
-			printk(KERN_WARNING "%s: Unexpected data error\n",
-			       dev->name);
-			goto drop;
-		case E_LST_LNK_ERR:
-			printk(KERN_WARNING "%s: Link lost error\n",
-			       dev->name);
-			goto drop;
-		case E_FRM_ERR:
-			printk(KERN_WARNING "%s: Framming Error\n",
-			       dev->name);
-			goto drop;
-		case E_FLG_SYN_ERR:
-			printk(KERN_WARNING "%s: Flag sync. lost during "
-			       "packet\n", dev->name);
-			goto drop;
-		case E_RX_INV_BUF:
-			printk(KERN_ERR "%s: Invalid receive buffer "
-			       "address\n", dev->name);
-			writel(readl(&regs->HostCtrl)|HALT_NIC|RR_CLEAR_INT,
-			       &regs->HostCtrl);
-			wmb();
-			break;
-		case E_RX_INV_DSC:
-			printk(KERN_ERR "%s: Invalid receive descriptor "
-			       "address\n", dev->name);
-			writel(readl(&regs->HostCtrl)|HALT_NIC|RR_CLEAR_INT,
-			       &regs->HostCtrl);
-			wmb();
-			break;
-		case E_RNG_BLK:
-			printk(KERN_ERR "%s: Invalid ring block\n",
-			       dev->name);
-			writel(readl(&regs->HostCtrl)|HALT_NIC|RR_CLEAR_INT,
-			       &regs->HostCtrl);
-			wmb();
-			break;
-		drop:
-			/* Label packet to be dropped.
-			 * Actual dropping occurs in rx
-			 * handling.
-			 *
-			 * The index of packet we get to drop is
-			 * the index of the packet following
-			 * the bad packet. -kbf
-			 */
-			{
-				u16 index = rrpriv->evt_ring[eidx].index;
-				index = (index + (RX_RING_ENTRIES - 1)) %
-					RX_RING_ENTRIES;
-				rrpriv->rx_ring[index].mode |=
-					(PACKET_BAD | PACKET_END);
-			}
-			break;
-		default:
-			printk(KERN_WARNING "%s: Unhandled event 0x%02x\n",
-			       dev->name, rrpriv->evt_ring[eidx].code);
-		}
-		eidx = (eidx + 1) % EVT_RING_ENTRIES;
-	}
-
-	rrpriv->info->evt_ctrl.pi = eidx;
-	wmb();
-	return eidx;
-}
-
-
-static void rx_int(struct net_device *dev, u32 rxlimit, u32 index)
-{
-	struct rr_private *rrpriv = netdev_priv(dev);
-	struct rr_regs __iomem *regs = rrpriv->regs;
-
-	do {
-		struct rx_desc *desc;
-		u32 pkt_len;
-
-		desc = &(rrpriv->rx_ring[index]);
-		pkt_len = desc->size;
-#if (DEBUG > 2)
-		printk("index %i, rxlimit %i\n", index, rxlimit);
-		printk("len %x, mode %x\n", pkt_len, desc->mode);
-#endif
-		if ( (rrpriv->rx_ring[index].mode & PACKET_BAD) == PACKET_BAD){
-			dev->stats.rx_dropped++;
-			goto defer;
-		}
-
-		if (pkt_len > 0){
-			struct sk_buff *skb, *rx_skb;
-
-			rx_skb = rrpriv->rx_skbuff[index];
-
-			if (pkt_len < PKT_COPY_THRESHOLD) {
-				skb = alloc_skb(pkt_len, GFP_ATOMIC);
-				if (skb == NULL){
-					printk(KERN_WARNING "%s: Unable to allocate skb (%i bytes), deferring packet\n", dev->name, pkt_len);
-					dev->stats.rx_dropped++;
-					goto defer;
-				} else {
-					pci_dma_sync_single_for_cpu(rrpriv->pci_dev,
-								    desc->addr.addrlo,
-								    pkt_len,
-								    PCI_DMA_FROMDEVICE);
-
-					memcpy(skb_put(skb, pkt_len),
-					       rx_skb->data, pkt_len);
-
-					pci_dma_sync_single_for_device(rrpriv->pci_dev,
-								       desc->addr.addrlo,
-								       pkt_len,
-								       PCI_DMA_FROMDEVICE);
-				}
-			}else{
-				struct sk_buff *newskb;
-
-				newskb = alloc_skb(dev->mtu + HIPPI_HLEN,
-					GFP_ATOMIC);
-				if (newskb){
-					dma_addr_t addr;
-
-	        			pci_unmap_single(rrpriv->pci_dev,
-						desc->addr.addrlo, dev->mtu +
-						HIPPI_HLEN, PCI_DMA_FROMDEVICE);
-					skb = rx_skb;
-					skb_put(skb, pkt_len);
-					rrpriv->rx_skbuff[index] = newskb;
-	        			addr = pci_map_single(rrpriv->pci_dev,
-						newskb->data,
-						dev->mtu + HIPPI_HLEN,
-						PCI_DMA_FROMDEVICE);
-					set_rraddr(&desc->addr, addr);
-				} else {
-					printk("%s: Out of memory, deferring "
-					       "packet\n", dev->name);
-					dev->stats.rx_dropped++;
-					goto defer;
-				}
-			}
-			skb->protocol = hippi_type_trans(skb, dev);
-
-			netif_rx(skb);		/* send it up */
-
-			dev->stats.rx_packets++;
-			dev->stats.rx_bytes += pkt_len;
-		}
-	defer:
-		desc->mode = 0;
-		desc->size = dev->mtu + HIPPI_HLEN;
-
-		if ((index & 7) == 7)
-			writel(index, &regs->IpRxPi);
-
-		index = (index + 1) % RX_RING_ENTRIES;
-	} while(index != rxlimit);
-
-	rrpriv->cur_rx = index;
-	wmb();
-}
-
-
-static irqreturn_t rr_interrupt(int irq, void *dev_id)
-{
-	struct rr_private *rrpriv;
-	struct rr_regs __iomem *regs;
-	struct net_device *dev = (struct net_device *)dev_id;
-	u32 prodidx, rxindex, eidx, txcsmr, rxlimit, txcon;
-
-	rrpriv = netdev_priv(dev);
-	regs = rrpriv->regs;
-
-	if (!(readl(&regs->HostCtrl) & RR_INT))
-		return IRQ_NONE;
-
-	spin_lock(&rrpriv->lock);
-
-	prodidx = readl(&regs->EvtPrd);
-	txcsmr = (prodidx >> 8) & 0xff;
-	rxlimit = (prodidx >> 16) & 0xff;
-	prodidx &= 0xff;
-
-#if (DEBUG > 2)
-	printk("%s: interrupt, prodidx = %i, eidx = %i\n", dev->name,
-	       prodidx, rrpriv->info->evt_ctrl.pi);
-#endif
-	/*
-	 * Order here is important.  We must handle events
-	 * before doing anything else in order to catch
-	 * such things as LLRC errors, etc -kbf
-	 */
-
-	eidx = rrpriv->info->evt_ctrl.pi;
-	if (prodidx != eidx)
-		eidx = rr_handle_event(dev, prodidx, eidx);
-
-	rxindex = rrpriv->cur_rx;
-	if (rxindex != rxlimit)
-		rx_int(dev, rxlimit, rxindex);
-
-	txcon = rrpriv->dirty_tx;
-	if (txcsmr != txcon) {
-		do {
-			/* Due to occational firmware TX producer/consumer out
-			 * of sync. error need to check entry in ring -kbf
-			 */
-			if(rrpriv->tx_skbuff[txcon]){
-				struct tx_desc *desc;
-				struct sk_buff *skb;
-
-				desc = &(rrpriv->tx_ring[txcon]);
-				skb = rrpriv->tx_skbuff[txcon];
-
-				dev->stats.tx_packets++;
-				dev->stats.tx_bytes += skb->len;
-
-				pci_unmap_single(rrpriv->pci_dev,
-						 desc->addr.addrlo, skb->len,
-						 PCI_DMA_TODEVICE);
-				dev_kfree_skb_irq(skb);
-
-				rrpriv->tx_skbuff[txcon] = NULL;
-				desc->size = 0;
-				set_rraddr(&rrpriv->tx_ring[txcon].addr, 0);
-				desc->mode = 0;
-			}
-			txcon = (txcon + 1) % TX_RING_ENTRIES;
-		} while (txcsmr != txcon);
-		wmb();
-
-		rrpriv->dirty_tx = txcon;
-		if (rrpriv->tx_full && rr_if_busy(dev) &&
-		    (((rrpriv->info->tx_ctrl.pi + 1) % TX_RING_ENTRIES)
-		     != rrpriv->dirty_tx)){
-			rrpriv->tx_full = 0;
-			netif_wake_queue(dev);
-		}
-	}
-
-	eidx |= ((txcsmr << 8) | (rxlimit << 16));
-	writel(eidx, &regs->EvtCon);
-	wmb();
-
-	spin_unlock(&rrpriv->lock);
-	return IRQ_HANDLED;
-}
-
-static inline void rr_raz_tx(struct rr_private *rrpriv,
-			     struct net_device *dev)
-{
-	int i;
-
-	for (i = 0; i < TX_RING_ENTRIES; i++) {
-		struct sk_buff *skb = rrpriv->tx_skbuff[i];
-
-		if (skb) {
-			struct tx_desc *desc = &(rrpriv->tx_ring[i]);
-
-	        	pci_unmap_single(rrpriv->pci_dev, desc->addr.addrlo,
-				skb->len, PCI_DMA_TODEVICE);
-			desc->size = 0;
-			set_rraddr(&desc->addr, 0);
-			dev_kfree_skb(skb);
-			rrpriv->tx_skbuff[i] = NULL;
-		}
-	}
-}
-
-
-static inline void rr_raz_rx(struct rr_private *rrpriv,
-			     struct net_device *dev)
-{
-	int i;
-
-	for (i = 0; i < RX_RING_ENTRIES; i++) {
-		struct sk_buff *skb = rrpriv->rx_skbuff[i];
-
-		if (skb) {
-			struct rx_desc *desc = &(rrpriv->rx_ring[i]);
-
-	        	pci_unmap_single(rrpriv->pci_dev, desc->addr.addrlo,
-				dev->mtu + HIPPI_HLEN, PCI_DMA_FROMDEVICE);
-			desc->size = 0;
-			set_rraddr(&desc->addr, 0);
-			dev_kfree_skb(skb);
-			rrpriv->rx_skbuff[i] = NULL;
-		}
-	}
-}
-
-static void rr_timer(unsigned long data)
-{
-	struct net_device *dev = (struct net_device *)data;
-	struct rr_private *rrpriv = netdev_priv(dev);
-	struct rr_regs __iomem *regs = rrpriv->regs;
-	unsigned long flags;
-
-	if (readl(&regs->HostCtrl) & NIC_HALTED){
-		printk("%s: Restarting nic\n", dev->name);
-		memset(rrpriv->rx_