patch-2.0.37 linux/drivers/scsi/ini9100u.c

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diff -u --recursive --new-file v2.0.36/linux/drivers/scsi/ini9100u.c linux/drivers/scsi/ini9100u.c
@@ -0,0 +1,1104 @@
+/**************************************************************************
+ * Initio 9100 device driver for Linux.
+ *
+ * Copyright (c) 1994-1998 Initio Corporation
+ * Copyright (c) 1998 Bas Vermeulen <bvermeul@blackstar.xs4all.nl>
+ * All rights reserved.
+ *
+ * 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; see the file COPYING.  If not, write to
+ * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * --------------------------------------------------------------------------
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification, immediately at the beginning of the file.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * Where this Software is combined with software released under the terms of 
+ * the GNU Public License ("GPL") and the terms of the GPL would require the 
+ * combined work to also be released under the terms of the GPL, the terms
+ * and conditions of this License will apply in addition to those of the
+ * GPL with the exception of any terms or conditions of this License that
+ * conflict with, or are expressly prohibited by, the GPL.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *************************************************************************
+ *
+ * DESCRIPTION:
+ *
+ * This is the Linux low-level SCSI driver for Initio INI-9X00U/UW SCSI host
+ * adapters
+ *
+ * 08/06/97 hc	- v1.01h
+ *		- Support inic-940 and inic-935
+ * 09/26/97 hc	- v1.01i
+ *		- Make correction from J.W. Schultz suggestion
+ * 10/13/97 hc	- Support reset function
+ * 10/21/97 hc	- v1.01j
+ *		- Support 32 LUN (SCSI 3)
+ * 01/14/98 hc	- v1.01k
+ *		- Fix memory allocation problem
+ * 03/04/98 hc	- v1.01l
+ *		- Fix tape rewind which will hang the system problem
+ *		- Set can_queue to tul_num_scb
+ * 06/25/98 hc	- v1.01m
+ *		- Get it work for kernel version >= 2.1.75
+ *		- Dynamic assign SCSI bus reset holding time in init_tulip()
+ * 07/02/98 hc	- v1.01n
+ *		- Support 0002134A
+ * 08/07/98 hc  - v1.01o
+ *		- Change the tul_abort_srb routine to use scsi_done. <01>
+ * 09/07/98 hl  - v1.02
+ *              - Change the INI9100U define and proc_dir_entry to
+ *                reflect the newer Kernel 2.1.118, but the v1.o1o
+ *                should work with Kernel 2.1.118.
+ * 09/20/98 wh  - v1.02a
+ *              - Support Abort command.
+ *              - Handle reset routine.
+ * 09/21/98 hl  - v1.03
+ *              - remove comments.
+ * 12/09/98 bv	- v1.03a
+ *		- Removed unused code
+ * 12/13/98 bv	- v1.03b
+ *		- Remove cli() locking for kernels >= 2.1.95. This uses
+ *		  spinlocks to serialize access to the pSRB_head and
+ *		  pSRB_tail members of the HCS structure.
+ * 09/01/99 bv	- v1.03d
+ *		- Fixed a deadlock problem in SMP.
+ * 21/01/99 bv	- v1.03e
+ *		- Add support for the Domex 3192U PCI SCSI
+ *		  This is a slightly modified patch by
+ *		  Brian Macy <bmacy@sunshinecomputing.com>
+ * 22/02/99 bv	- v1.03f
+ *		- Didn't detect the INIC-950 in 2.0.x correctly.
+ *		  Now fixed.
+ **************************************************************************/
+
+#define CVT_LINUX_VERSION(V,P,S)        (V * 65536 + P * 256 + S)
+
+#ifndef LINUX_VERSION_CODE
+#include <linux/version.h>
+#endif
+
+#ifdef MODULE
+#include <linux/module.h>
+#endif
+
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(1,3,0)
+#include <stdarg.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <linux/string.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/ioport.h>
+#if LINUX_VERSION_CODE <= CVT_LINUX_VERSION(2,1,92)
+#include <linux/bios32.h>
+#endif
+#include <linux/delay.h>
+#include <linux/sched.h>
+#include <linux/pci.h>
+#include <linux/proc_fs.h>
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,23)
+#include <linux/init.h>
+#endif
+#include <linux/blk.h>
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95)
+#include <asm/spinlock.h>
+#endif
+#include "sd.h"
+#include "scsi.h"
+#include "hosts.h"
+#include "ini9100u.h"
+#include <linux/stat.h>
+#include <linux/malloc.h>
+#include <linux/config.h>
+
+#else
+
+#include <linux/kernel.h>
+#include <linux/head.h>
+#include <linux/types.h>
+#include <linux/string.h>
+#include <linux/ioport.h>
+
+#include <linux/sched.h>
+#include <linux/proc_fs.h>
+#include <asm/system.h>
+#include <asm/io.h>
+#include "../block/blk.h"
+#include "scsi.h"
+#include "sd.h"
+#include "hosts.h"
+#include <linux/malloc.h>
+#include "ini9100u.h"
+#endif
+
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,93)
+#ifdef CONFIG_PCI
+#include <linux/pci.h>
+#endif
+#endif
+
+#ifdef DEBUG_i91u
+unsigned int i91u_debug = DEBUG_DEFAULT;
+#endif
+
+#ifdef MODULE
+Scsi_Host_Template driver_template = INI9100U;
+#include "scsi_module.c"
+#endif
+
+char *i91uCopyright = "Copyright (C) 1996-98";
+char *i91uInitioName = "by Initio Corporation";
+char *i91uProductName = "INI-9X00U/UW";
+char *i91uVersion = "v1.03f";
+
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(1,3,0)
+struct proc_dir_entry proc_scsi_ini9100u =
+{
+	PROC_SCSI_INI9100U, 7, "INI9100U",
+	S_IFDIR | S_IRUGO | S_IXUGO, 2,
+	0, 0, 0, NULL, NULL, NULL, NULL, NULL, NULL, NULL
+};
+#endif
+
+#define TULSZ(sz)     (sizeof(sz) / sizeof(sz[0]))
+#define TUL_RDWORD(x,y)         (short)(inl((int)((ULONG)((ULONG)x+(UCHAR)y)) ))
+
+/* set by i91_setup according to the command line */
+static int setup_called = 0;
+
+static int tul_num_ch = 4;	/* Maximum 4 adapters           */
+static int tul_num_scb;
+static int tul_tag_enable = 1;
+static SCB *tul_scb;
+
+#ifdef DEBUG_i91u
+static int setup_debug = 0;
+#endif
+
+static char *setup_str = (char *) NULL;
+
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(1,3,0)
+static void i91u_intr0(int irq, void *dev_id, struct pt_regs *);
+static void i91u_intr1(int irq, void *dev_id, struct pt_regs *);
+static void i91u_intr2(int irq, void *dev_id, struct pt_regs *);
+static void i91u_intr3(int irq, void *dev_id, struct pt_regs *);
+static void i91u_intr4(int irq, void *dev_id, struct pt_regs *);
+static void i91u_intr5(int irq, void *dev_id, struct pt_regs *);
+static void i91u_intr6(int irq, void *dev_id, struct pt_regs *);
+static void i91u_intr7(int irq, void *dev_id, struct pt_regs *);
+#else
+static void i91u_intr0(int irq, struct pt_regs *);
+static void i91u_intr1(int irq, struct pt_regs *);
+static void i91u_intr2(int irq, struct pt_regs *);
+static void i91u_intr3(int irq, struct pt_regs *);
+static void i91u_intr4(int irq, struct pt_regs *);
+static void i91u_intr5(int irq, struct pt_regs *);
+static void i91u_intr6(int irq, struct pt_regs *);
+static void i91u_intr7(int irq, struct pt_regs *);
+#endif
+
+static void i91u_panic(char *msg);
+
+static void i91uSCBPost(BYTE * pHcb, BYTE * pScb);
+
+				/* ---- EXTERNAL FUNCTIONS ---- */
+					/* Get total number of adapters */
+extern void init_i91uAdapter_table(void);
+extern int Addi91u_into_Adapter_table(WORD, WORD, BYTE, BYTE, BYTE);
+extern int tul_ReturnNumberOfAdapters(void);
+extern void get_tulipPCIConfig(HCS * pHCB, int iChannel_index);
+extern int init_tulip(HCS * pHCB, SCB * pSCB, int tul_num_scb, BYTE * pbBiosAdr, int reset_time);
+extern SCB *tul_alloc_scb(HCS * pHCB);
+extern int tul_abort_srb(HCS * pHCB, Scsi_Cmnd * pSRB);
+extern void tul_exec_scb(HCS * pHCB, SCB * pSCB);
+extern void tul_release_scb(HCS * pHCB, SCB * pSCB);
+extern void tul_stop_bm(HCS * pHCB);
+extern int tul_reset_scsi(HCS * pCurHcb, int seconds);
+extern int tul_isr(HCS * pHCB);
+extern int tul_reset(HCS * pHCB, Scsi_Cmnd * pSRB, unsigned char target);
+extern int tul_reset_scsi_bus(HCS * pCurHcb);
+extern int tul_device_reset(HCS * pCurHcb, ULONG pSrb, unsigned int target, unsigned int ResetFlags);
+				/* ---- EXTERNAL VARIABLES ---- */
+extern HCS tul_hcs[];
+
+const PCI_ID i91u_pci_devices[] = {
+	{ INI_VENDOR_ID, I950_DEVICE_ID },
+	{ INI_VENDOR_ID, I940_DEVICE_ID },
+	{ INI_VENDOR_ID, I935_DEVICE_ID },
+	{ INI_VENDOR_ID, I920_DEVICE_ID },
+	{ DMX_VENDOR_ID, I920_DEVICE_ID },
+};
+
+/*
+ *  queue services:
+ */
+/*****************************************************************************
+ Function name  : i91uAppendSRBToQueue
+ Description    : This function will push current request into save list
+ Input          : pSRB  -       Pointer to SCSI request block.
+		  pHCB  -       Pointer to host adapter structure
+ Output         : None.
+ Return         : None.
+*****************************************************************************/
+static void i91uAppendSRBToQueue(HCS * pHCB, Scsi_Cmnd * pSRB)
+{
+	ULONG flags;
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95)
+	spin_lock_irqsave(&(pHCB->pSRB_lock), flags);
+#else
+	save_flags(flags);
+	cli();
+#endif
+
+	pSRB->next = NULL;	/* Pointer to next              */
+
+	if (pHCB->pSRB_head == NULL)
+		pHCB->pSRB_head = pSRB;
+	else
+		pHCB->pSRB_tail->next = pSRB;	/* Pointer to next              */
+	pHCB->pSRB_tail = pSRB;
+
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95)
+	spin_unlock_irqrestore(&(pHCB->pSRB_lock), flags);
+#else
+	restore_flags(flags);
+#endif
+	return;
+}
+
+/*****************************************************************************
+ Function name  : i91uPopSRBFromQueue
+ Description    : This function will pop current request from save list
+ Input          : pHCB  -       Pointer to host adapter structure
+ Output         : None.
+ Return         : pSRB  -       Pointer to SCSI request block.
+*****************************************************************************/
+static Scsi_Cmnd *i91uPopSRBFromQueue(HCS * pHCB)
+{
+	Scsi_Cmnd *pSRB;
+	ULONG flags;
+
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95)
+	spin_lock_irqsave(&(pHCB->pSRB_lock), flags);
+#else
+	save_flags(flags);
+	cli();
+#endif
+
+	if ((pSRB = pHCB->pSRB_head) != NULL) {
+		pHCB->pSRB_head = pHCB->pSRB_head->next;
+		pSRB->next = NULL;
+	}
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95)
+	spin_unlock_irqrestore(&(pHCB->pSRB_lock), flags);
+#else
+	restore_flags(flags);
+#endif
+
+	return (pSRB);
+}
+
+/* called from init/main.c */
+
+void i91u_setup(char *str, int *ints)
+{
+	if (setup_called)
+		i91u_panic("i91u: i91u_setup called twice.\n");
+
+	setup_called = ints[0];
+	setup_str = str;
+
+#ifdef DEBUG_i91u
+	setup_debug = ints[0] >= 1 ? ints[1] : DEBUG_DEFAULT;
+#endif
+}
+
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,93)
+int tul_NewReturnNumberOfAdapters(void)
+{
+	struct pci_dev *pDev = NULL;	/* Start from none              */
+	int iAdapters = 0;
+	long dRegValue;
+	WORD wBIOS;
+	int i = 0;
+
+	init_i91uAdapter_table();
+
+	for (i = 0; i < TULSZ(i91u_pci_devices); i++)
+	{
+		while ((pDev = pci_find_device(i91u_pci_devices[i].vendor_id, i91u_pci_devices[i].device_id, pDev)) != NULL) {
+			pci_read_config_dword(pDev, 0x44, (u32 *) & dRegValue);
+			wBIOS = (UWORD) (dRegValue & 0xFF);
+			if (((dRegValue & 0xFF00) >> 8) == 0xFF)
+				dRegValue = 0;
+			wBIOS = (wBIOS << 8) + ((UWORD) ((dRegValue & 0xFF00) >> 8));
+			if (Addi91u_into_Adapter_table(wBIOS,
+							(pDev->base_address[0] & 0xFFFE),
+					       		pDev->irq,
+					       		pDev->bus->number,
+					       		(pDev->devfn >> 3)
+		    		) == 0)
+				iAdapters++;
+		}
+	}
+
+	return (iAdapters);
+}
+
+#else				/* <01> */
+
+/*****************************************************************************
+ Function name	: tul_ReturnNumberOfAdapters
+ Description	: This function will scan PCI bus to get all Orchid card
+ Input		: None.
+ Output		: None.
+ Return		: SUCCESSFUL	- Successful scan
+		  ohterwise	- No drives founded
+*****************************************************************************/
+int tul_ReturnNumberOfAdapters(void)
+{
+	unsigned int i, iAdapters;
+	unsigned int dRegValue;
+	unsigned short command;
+	WORD wBIOS, wBASE;
+	BYTE bPCIBusNum, bInterrupt, bPCIDeviceNum;
+
+	iAdapters = 0;
+	/*
+	 * PCI-bus probe.
+	 */
+	if (pcibios_present()) {
+#ifdef MMAPIO
+		unsigned long page_offset, base;
+#endif
+
+		int index;
+		unsigned char pci_bus, pci_devfn;
+
+		bPCIBusNum = 0;
+		bPCIDeviceNum = 0;
+		init_i91uAdapter_table();
+		for (i = 0; i < TULSZ(i91u_pci_devices); i++) {
+			index = 0;
+			while (!(pcibios_find_device(i91u_pci_devices[i].vendor_id,
+					   i91u_pci_devices[i].device_id,
+					 index++, &pci_bus, &pci_devfn)))
+			{
+				if (i == 2) {
+					   printk("i91u: The RAID controller is not supported by\n");
+					   printk("i91u:         this driver, we are ignoring it.\n");
+				} else {
+					/*
+					 * Read sundry information from PCI BIOS.
+					 */
+					bPCIBusNum = pci_bus;
+					bPCIDeviceNum = pci_devfn;
+					pcibios_read_config_dword(pci_bus, pci_devfn, PCI_BASE_ADDRESS_0,
+							     &dRegValue);
+					if (dRegValue == -1) {	/* Check return code            */
+						printk("\n\ri91u: tulip read configuration error.\n");
+						return (0);	/* Read configuration space error  */
+					}
+					/* <02> read from base address + 0x50 offset to get the wBIOS balue. */
+					wBASE = (WORD) dRegValue;
+
+					/* Now read the interrupt line  */
+					pcibios_read_config_dword(pci_bus, pci_devfn, PCI_INTERRUPT_LINE,
+							     &dRegValue);
+					bInterrupt = dRegValue & 0xFF;	/* Assign interrupt line      */
+					pcibios_read_config_word(pci_bus, pci_devfn, PCI_COMMAND, &command);
+					pcibios_write_config_word(pci_bus, pci_devfn, PCI_COMMAND,
+								  command | PCI_COMMAND_MASTER | PCI_COMMAND_IO);
+					wBASE &= PCI_BASE_ADDRESS_IO_MASK;
+					wBIOS = TUL_RDWORD(wBASE, 0x50);
+
+#ifdef MMAPIO
+					base = wBASE & PAGE_MASK;
+					page_offset = wBASE - base;
+
+					/*
+					 * replace the next line with this one if you are using 2.1.x:
+					 * temp_p->maddr = ioremap(base, page_offset + 256);
+					 */
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,0)
+					wBASE = ioremap(base, page_offset + 256);
+#else
+					wBASE = (WORD) vremap(base, page_offset + 256);
+#endif
+					if (wBASE) {
+						wBASE += page_offset;
+					}
+#endif
+
+					if (Addi91u_into_Adapter_table(wBIOS, wBASE, bInterrupt, bPCIBusNum,
+						   bPCIDeviceNum) == 0x0)
+						iAdapters++;
+				}
+			}	/* while(pdev=....) */
+		}		/* for PCI_DEVICES */
+	}			/* PCI BIOS present */
+	return (iAdapters);
+}
+#endif
+
+int i91u_detect(Scsi_Host_Template * tpnt)
+{
+	SCB *pSCB;
+	HCS *pHCB;
+	struct Scsi_Host *hreg;
+	unsigned long i;	/* 01/14/98                     */
+	int ok = 0, iAdapters;
+	ULONG dBiosAdr;
+	BYTE *pbBiosAdr;
+
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(1,3,0)
+	tpnt->proc_dir = &proc_scsi_ini9100u;
+#endif
+
+	if (setup_called) {	/* Setup by i91u_setup          */
+		printk("i91u: processing commandline: ");
+
+#ifdef DEBUG_i91u
+		if (setup_called > 1) {
+			printk("\ni91u: %s\n", setup_str);
+			printk("i91u: usage: i91u[=<DEBUG>]\n");
+			i91u_panic("i91u panics in line %d", __LINE__);
+		}
+		i91u_debug = setup_debug;
+#endif
+	}
+	/* Get total number of adapters in the motherboard */
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,93)
+#ifdef CONFIG_PCI
+	iAdapters = tul_NewReturnNumberOfAdapters();
+#else
+	iAdapters = tul_ReturnNumberOfAdapters();
+#endif
+#else
+	iAdapters = tul_ReturnNumberOfAdapters();
+#endif
+
+	if (iAdapters == 0)	/* If no tulip founded, return */
+		return (0);
+
+	tul_num_ch = (iAdapters > tul_num_ch) ? tul_num_ch : iAdapters;
+	/* Update actually channel number */
+	if (tul_tag_enable) {	/* 1.01i                  */
+		tul_num_scb = MAX_TARGETS * i91u_MAXQUEUE;
+	} else {
+		tul_num_scb = MAX_TARGETS + 3;	/* 1-tape, 1-CD_ROM, 1- extra */
+	}			/* Update actually SCBs per adapter */
+
+	/* Get total memory needed for HCS */
+	i = tul_num_ch * sizeof(HCS);
+	memset((unsigned char *) &tul_hcs[0], 0, i);	/* Initialize tul_hcs 0 */
+	/* Get total memory needed for SCB */
+
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(1,3,0)
+	for (; tul_num_scb >= MAX_TARGETS + 3; tul_num_scb--) {
+		i = tul_num_ch * tul_num_scb * sizeof(SCB);
+		if ((tul_scb = (SCB *) kmalloc(i, GFP_ATOMIC | GFP_DMA)) != NULL)
+			break;
+	}
+#else
+	i = tul_num_ch * tul_num_scb * sizeof(SCB);
+	tul_scb = (SCB *) scsi_init_malloc(i, GFP_ATOMIC | GFP_DMA);
+#endif
+	if (tul_scb == NULL) {
+		printk("i91u: SCB memory allocation error\n");
+		return (0);
+	}
+	memset((unsigned char *) tul_scb, 0, i);
+
+	pSCB = tul_scb;
+	for (i = 0; i < tul_num_ch * tul_num_scb; i++, pSCB++) {
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(1,3,0)
+		pSCB->SCB_SGPAddr = (U32) VIRT_TO_BUS(&pSCB->SCB_SGList[0]);
+#else
+		pSCB->SCB_SGPAddr = (U32) (&pSCB->SCB_SGList[0]);
+#endif
+	}
+
+	for (i = 0, pHCB = &tul_hcs[0];		/* Get pointer for control block */
+	     i < tul_num_ch;
+	     i++, pHCB++) {
+		pHCB->pSRB_head = NULL;		/* Initial SRB save queue       */
+		pHCB->pSRB_tail = NULL;		/* Initial SRB save queue       */
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95)
+		pHCB->pSRB_lock = SPIN_LOCK_UNLOCKED;	/* SRB save queue lock */
+#endif
+		request_region(pHCB->HCS_Base, 0x100, "i91u");	/* Register */
+
+		get_tulipPCIConfig(pHCB, i);
+
+		dBiosAdr = pHCB->HCS_BIOS;
+		dBiosAdr = (dBiosAdr << 4);
+
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(1,3,0)
+		pbBiosAdr = phys_to_virt(dBiosAdr);
+#endif
+
+		init_tulip(pHCB, tul_scb + (i * tul_num_scb), tul_num_scb, pbBiosAdr, 10);
+		pHCB->HCS_Index = i;	/* 7/29/98 */
+		hreg = scsi_register(tpnt, sizeof(HCS));
+		hreg->io_port = pHCB->HCS_Base;
+		hreg->n_io_port = 0xff;
+		hreg->can_queue = tul_num_scb;	/* 03/05/98                      */
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(1,3,0)
+		hreg->unique_id = pHCB->HCS_Base;
+		hreg->max_id = pHCB->HCS_MaxTar;
+#endif
+		hreg->max_lun = 32;	/* 10/21/97                     */
+		hreg->irq = pHCB->HCS_Intr;
+		hreg->this_id = pHCB->HCS_SCSI_ID;	/* Assign HCS index           */
+		hreg->base = (UCHAR *) pHCB;
+		hreg->sg_tablesize = TOTAL_SG_ENTRY;	/* Maximun support is 32 */
+
+		/* Initial tulip chip           */
+		switch (i) {
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(1,3,0)
+		case 0:
+			ok = request_irq(pHCB->HCS_Intr, i91u_intr0, SA_INTERRUPT | SA_SHIRQ, "i91u", NULL);
+			break;
+		case 1:
+			ok = request_irq(pHCB->HCS_Intr, i91u_intr1, SA_INTERRUPT | SA_SHIRQ, "i91u", NULL);
+			break;
+		case 2:
+			ok = request_irq(pHCB->HCS_Intr, i91u_intr2, SA_INTERRUPT | SA_SHIRQ, "i91u", NULL);
+			break;
+		case 3:
+			ok = request_irq(pHCB->HCS_Intr, i91u_intr3, SA_INTERRUPT | SA_SHIRQ, "i91u", NULL);
+			break;
+		case 4:
+			ok = request_irq(pHCB->HCS_Intr, i91u_intr4, SA_INTERRUPT | SA_SHIRQ, "i91u", NULL);
+			break;
+		case 5:
+			ok = request_irq(pHCB->HCS_Intr, i91u_intr5, SA_INTERRUPT | SA_SHIRQ, "i91u", NULL);
+			break;
+		case 6:
+			ok = request_irq(pHCB->HCS_Intr, i91u_intr6, SA_INTERRUPT | SA_SHIRQ, "i91u", NULL);
+			break;
+		case 7:
+			ok = request_irq(pHCB->HCS_Intr, i91u_intr7, SA_INTERRUPT | SA_SHIRQ, "i91u", NULL);
+			break;
+		default:
+			i91u_panic("i91u: Too many host adapters\n");
+			break;
+		}
+		if (ok < 0) {
+			if (ok == -EINVAL) {
+				printk("i91u: bad IRQ %d.\n", pHCB->HCS_Intr);
+				printk("         Contact author.\n");
+			} else if (ok == -EBUSY)
+				printk("i91u: IRQ %d already in use. Configure another.\n",
+				       pHCB->HCS_Intr);
+			else {
+				printk("\ni91u: Unexpected error code on requesting IRQ %d.\n",
+				       pHCB->HCS_Intr);
+				printk("         Contact author.\n");
+			}
+			i91u_panic("i91u: driver needs an IRQ.\n");
+		}
+#endif
+	}
+
+	tpnt->this_id = -1;
+	tpnt->can_queue = 1;
+
+	return 1;
+}
+
+static void i91uBuildSCB(HCS * pHCB, SCB * pSCB, Scsi_Cmnd * SCpnt)
+{				/* Create corresponding SCB     */
+	struct scatterlist *pSrbSG;
+	SG *pSG;		/* Pointer to SG list           */
+	int i;
+	long TotalLen;
+
+	pSCB->SCB_Post = i91uSCBPost;	/* i91u's callback routine      */
+	pSCB->SCB_Srb = SCpnt;
+	pSCB->SCB_Opcode = ExecSCSI;
+	pSCB->SCB_Flags = SCF_POST;	/* After SCSI done, call post routine */
+	pSCB->SCB_Target = SCpnt->target;
+	pSCB->SCB_Lun = SCpnt->lun;
+	pSCB->SCB_Ident = SCpnt->lun | DISC_ALLOW;
+	pSCB->SCB_Flags |= SCF_SENSE;	/* Turn on auto request sense   */
+
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(1,3,0)
+	pSCB->SCB_SensePtr = (U32) VIRT_TO_BUS(SCpnt->sense_buffer);
+#else
+	pSCB->SCB_SensePtr = (U32) (SCpnt->sense_buffer);
+#endif
+
+	pSCB->SCB_SenseLen = SENSE_SIZE;
+
+	pSCB->SCB_CDBLen = SCpnt->cmd_len;
+	pSCB->SCB_HaStat = 0;
+	pSCB->SCB_TaStat = 0;
+	memcpy(&pSCB->SCB_CDB[0], &SCpnt->cmnd, SCpnt->cmd_len);
+
+	if (SCpnt->device->tagged_supported) {	/* Tag Support                  */
+		pSCB->SCB_TagMsg = SIMPLE_QUEUE_TAG;	/* Do simple tag only   */
+	} else {
+		pSCB->SCB_TagMsg = 0;	/* No tag support               */
+	}
+
+	if (SCpnt->use_sg) {
+		pSrbSG = (struct scatterlist *) SCpnt->request_buffer;
+		if (SCpnt->use_sg == 1) {	/* If only one entry in the list *//*      treat it as regular I/O */
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(1,3,0)
+			pSCB->SCB_BufPtr = (U32) VIRT_TO_BUS(pSrbSG->address);
+#else
+			pSCB->SCB_BufPtr = (U32) (pSrbSG->address);
+#endif
+			TotalLen = pSrbSG->length;
+			pSCB->SCB_SGLen = 0;
+		} else {	/* Assign SG physical address   */
+			pSCB->SCB_BufPtr = pSCB->SCB_SGPAddr;
+			pSCB->SCB_Flags |= SCF_SG;	/* Turn on SG list flag       */
+			for (i = 0, TotalLen = 0, pSG = &pSCB->SCB_SGList[0];	/* 1.01g */
+			     i < SCpnt->use_sg;
+			     i++, pSG++, pSrbSG++) {
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(1,3,0)
+				pSG->SG_Ptr = (U32) VIRT_TO_BUS(pSrbSG->address);
+#else
+				pSG->SG_Ptr = (U32) (pSrbSG->address);
+#endif
+				TotalLen += pSG->SG_Len = pSrbSG->length;
+			}
+			pSCB->SCB_SGLen = i;
+		}
+		pSCB->SCB_BufLen = (SCpnt->request_bufflen > TotalLen) ?
+		    TotalLen : SCpnt->request_bufflen;
+	} else {		/* Non SG                       */
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(1,3,0)
+		pSCB->SCB_BufPtr = (U32) VIRT_TO_BUS(SCpnt->request_buffer);
+#else
+		pSCB->SCB_BufPtr = (U32) (SCpnt->request_buffer);
+#endif
+		pSCB->SCB_BufLen = SCpnt->request_bufflen;
+		pSCB->SCB_SGLen = 0;
+	}
+
+	return;
+}
+
+/* 
+ *  Queue a command and setup interrupts for a free bus.
+ */
+int i91u_queue(Scsi_Cmnd * SCpnt, void (*done) (Scsi_Cmnd *))
+{
+	register SCB *pSCB;
+	HCS *pHCB;		/* Point to Host adapter control block */
+
+	if (SCpnt->lun > 16) {	/* 07/22/98 */
+
+		SCpnt->result = (DID_TIME_OUT << 16);
+		done(SCpnt);	/* Notify system DONE           */
+		return (0);
+	}
+	pHCB = (HCS *) SCpnt->host->base;
+
+	SCpnt->scsi_done = done;
+	/* Get free SCSI control block  */
+	if ((pSCB = tul_alloc_scb(pHCB)) == NULL) {
+		i91uAppendSRBToQueue(pHCB, SCpnt);	/* Buffer this request  */
+		return (0);
+	}
+	i91uBuildSCB(pHCB, pSCB, SCpnt);
+	tul_exec_scb(pHCB, pSCB);	/* Start execute SCB            */
+	return (0);
+}
+
+/*
+ *  We only support command in interrupt-driven fashion
+ */
+int i91u_command(Scsi_Cmnd * SCpnt)
+{
+	printk("i91u: interrupt driven driver; use i91u_queue()\n");
+	return -1;
+}
+
+/*
+ *  Abort a queued command
+ *  (commands that are on the bus can't be aborted easily)
+ */
+int i91u_abort(Scsi_Cmnd * SCpnt)
+{
+	HCS *pHCB;
+
+	pHCB = (HCS *) SCpnt->host->base;
+	return tul_abort_srb(pHCB, SCpnt);
+}
+
+/*
+ *  Reset registers, reset a hanging bus and
+ *  kill active and disconnected commands for target w/o soft reset
+ */
+int i91u_reset(Scsi_Cmnd * SCpnt, unsigned int reset_flags)
+{				/* I need Host Control Block Information */
+	HCS *pHCB;
+
+	pHCB = (HCS *) SCpnt->host->base;
+
+	if (reset_flags & (SCSI_RESET_SUGGEST_BUS_RESET | SCSI_RESET_SUGGEST_HOST_RESET))
+		return tul_reset_scsi_bus(pHCB);
+	else
+		return tul_device_reset(pHCB, (ULONG) SCpnt, SCpnt->target, reset_flags);
+}
+
+/*
+ * Return the "logical geometry"
+ */
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(1,3,0)
+int i91u_biosparam(Scsi_Disk * disk, kdev_t dev, int *info_array)
+#else
+int i91u_biosparam(Scsi_Disk * disk, int dev, int *info_array)
+#endif
+{
+	HCS *pHcb;		/* Point to Host adapter control block */
+	TCS *pTcb;
+
+	pHcb = (HCS *) disk->device->host->base;
+	pTcb = &pHcb->HCS_Tcs[disk->device->id];
+
+	if (pTcb->TCS_DrvHead) {
+		info_array[0] = pTcb->TCS_DrvHead;
+		info_array[1] = pTcb->TCS_DrvSector;
+		info_array[2] = disk->capacity / pTcb->TCS_DrvHead / pTcb->TCS_DrvSector;
+	} else {
+		if (pTcb->TCS_DrvFlags & TCF_DRV_255_63) {
+			info_array[0] = 255;
+			info_array[1] = 63;
+			info_array[2] = disk->capacity / 255 / 63;
+		} else {
+			info_array[0] = 64;
+			info_array[1] = 32;
+			info_array[2] = disk->capacity >> 11;
+		}
+	}
+
+#if defined(DEBUG_BIOSPARAM)
+	if (i91u_debug & debug_biosparam) {
+		printk("bios geometry: head=%d, sec=%d, cyl=%d\n",
+		       info_array[0], info_array[1], info_array[2]);
+		printk("WARNING: check, if the bios geometry is correct.\n");
+	}
+#endif
+
+	return 0;
+}
+
+/*****************************************************************************
+ Function name  : i91uSCBPost
+ Description    : This is callback routine be called when tulip finish one
+			SCSI command.
+ Input          : pHCB  -       Pointer to host adapter control block.
+		  pSCB  -       Pointer to SCSI control block.
+ Output         : None.
+ Return         : None.
+*****************************************************************************/
+static void i91uSCBPost(BYTE * pHcb, BYTE * pScb)
+{
+	Scsi_Cmnd *pSRB;	/* Pointer to SCSI request block */
+	HCS *pHCB;
+	SCB *pSCB;
+
+	pHCB = (HCS *) pHcb;
+	pSCB = (SCB *) pScb;
+	if ((pSRB = pSCB->SCB_Srb) == 0) {
+		printk("i91uSCBPost: SRB pointer is empty\n");
+
+		tul_release_scb(pHCB, pSCB);	/* Release SCB for current channel */
+		return;
+	}
+	switch (pSCB->SCB_HaStat) {
+	case 0x0:
+	case 0xa:		/* Linked command complete without error and linked normally */
+	case 0xb:		/* Linked command complete without error interrupt generated */
+		pSCB->SCB_HaStat = 0;
+		break;
+
+	case 0x11:		/* Selection time out-The initiator selection or target
+				   reselection was not complete within the SCSI Time out period */
+		pSCB->SCB_HaStat = DID_TIME_OUT;
+		break;
+
+	case 0x14:		/* Target bus phase sequence failure-An invalid bus phase or bus
+				   phase sequence was requested by the target. The host adapter
+				   will generate a SCSI Reset Condition, notifying the host with
+				   a SCRD interrupt */
+		pSCB->SCB_HaStat = DID_RESET;
+		break;
+
+	case 0x1a:		/* SCB Aborted. 07/21/98 */
+		pSCB->SCB_HaStat = DID_ABORT;
+		break;
+
+	case 0x12:		/* Data overrun/underrun-The target attempted to transfer more data
+				   than was allocated by the Data Length field or the sum of the
+				   Scatter / Gather Data Length fields. */
+	case 0x13:		/* Unexpected bus free-The target dropped the SCSI BSY at an unexpected time. */
+	case 0x16:		/* Invalid SCB Operation Code. */
+
+	default:
+		printk("ini9100u: %x %x\n", pSCB->SCB_HaStat, pSCB->SCB_TaStat);
+		pSCB->SCB_HaStat = DID_ERROR;	/* Couldn't find any better */
+		break;
+	}
+
+	pSRB->result = pSCB->SCB_TaStat | (pSCB->SCB_HaStat << 16);
+
+	if (pSRB == NULL) {
+		printk("pSRB is NULL\n");
+	}
+	pSRB->scsi_done(pSRB);	/* Notify system DONE           */
+	if ((pSRB = i91uPopSRBFromQueue(pHCB)) != NULL)
+		/* Find the next pending SRB    */
+	{			/* Assume resend will success   */
+		/* Reuse old SCB                */
+		i91uBuildSCB(pHCB, pSCB, pSRB);		/* Create corresponding SCB     */
+
+		tul_exec_scb(pHCB, pSCB);	/* Start execute SCB            */
+	} else {		/* No Pending SRB               */
+		tul_release_scb(pHCB, pSCB);	/* Release SCB for current channel */
+	}
+	return;
+}
+
+/*
+ * Interrupts handler (main routine of the driver)
+ */
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(1,3,0)
+static void i91u_intr0(int irqno, void *dev_id, struct pt_regs *regs)
+#else
+static void i91u_intr0(int irqno, struct pt_regs *regs)
+#endif
+{
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95)
+	unsigned long flags;
+#endif
+
+	if (tul_hcs[0].HCS_Intr != irqno)
+		return;
+
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95)
+	spin_lock_irqsave(&io_request_lock, flags);
+#endif
+
+	tul_isr(&tul_hcs[0]);
+
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95)
+	spin_unlock_irqrestore(&io_request_lock, flags);
+#endif
+}
+
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(1,3,0)
+static void i91u_intr1(int irqno, void *dev_id, struct pt_regs *regs)
+#else
+static void i91u_intr1(int irqno, struct pt_regs *regs)
+#endif
+{
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95)
+	unsigned long flags;
+#endif
+
+	if (tul_hcs[1].HCS_Intr != irqno)
+		return;
+
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95)
+	spin_lock_irqsave(&io_request_lock, flags);
+#endif
+
+	tul_isr(&tul_hcs[1]);
+
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95)
+	spin_unlock_irqrestore(&io_request_lock, flags);
+#endif
+}
+
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(1,3,0)
+static void i91u_intr2(int irqno, void *dev_id, struct pt_regs *regs)
+#else
+static void i91u_intr2(int irqno, struct pt_regs *regs)
+#endif
+{
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95)
+	unsigned long flags;
+#endif
+
+	if (tul_hcs[2].HCS_Intr != irqno)
+		return;
+
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95)
+	spin_lock_irqsave(&io_request_lock, flags);
+#endif
+
+	tul_isr(&tul_hcs[2]);
+
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95)
+	spin_unlock_irqrestore(&io_request_lock, flags);
+#endif
+}
+
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(1,3,0)
+static void i91u_intr3(int irqno, void *dev_id, struct pt_regs *regs)
+#else
+static void i91u_intr3(int irqno, struct pt_regs *regs)
+#endif
+{
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95)
+	unsigned long flags;
+#endif
+
+	if (tul_hcs[3].HCS_Intr != irqno)
+		return;
+
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95)
+	spin_lock_irqsave(&io_request_lock, flags);
+#endif
+
+	tul_isr(&tul_hcs[3]);
+
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95)
+	spin_unlock_irqrestore(&io_request_lock, flags);
+#endif
+}
+
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(1,3,0)
+static void i91u_intr4(int irqno, void *dev_id, struct pt_regs *regs)
+#else
+static void i91u_intr4(int irqno, struct pt_regs *regs)
+#endif
+{
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95)
+	unsigned long flags;
+#endif
+
+	if (tul_hcs[4].HCS_Intr != irqno)
+		return;
+
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95)
+	spin_lock_irqsave(&io_request_lock, flags);
+#endif
+
+	tul_isr(&tul_hcs[4]);
+
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95)
+	spin_unlock_irqrestore(&io_request_lock, flags);
+#endif
+}
+
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(1,3,0)
+static void i91u_intr5(int irqno, void *dev_id, struct pt_regs *regs)
+#else
+static void i91u_intr5(int irqno, struct pt_regs *regs)
+#endif
+{
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95)
+	unsigned long flags;
+#endif
+
+	if (tul_hcs[5].HCS_Intr != irqno)
+		return;
+
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95)
+	spin_lock_irqsave(&io_request_lock, flags);
+#endif
+
+	tul_isr(&tul_hcs[5]);
+
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95)
+	spin_unlock_irqrestore(&io_request_lock, flags);
+#endif
+}
+
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(1,3,0)
+static void i91u_intr6(int irqno, void *dev_id, struct pt_regs *regs)
+#else
+static void i91u_intr6(int irqno, struct pt_regs *regs)
+#endif
+{
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95)
+	unsigned long flags;
+#endif
+
+	if (tul_hcs[6].HCS_Intr != irqno)
+		return;
+
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95)
+	spin_lock_irqsave(&io_request_lock, flags);
+#endif
+
+	tul_isr(&tul_hcs[6]);
+
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95)
+	spin_unlock_irqrestore(&io_request_lock, flags);
+#endif
+}
+
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(1,3,0)
+static void i91u_intr7(int irqno, void *dev_id, struct pt_regs *regs)
+#else
+static void i91u_intr7(int irqno, struct pt_regs *regs)
+#endif
+{
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95)
+	unsigned long flags;
+#endif
+
+	if (tul_hcs[7].HCS_Intr != irqno)
+		return;
+
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95)
+	spin_lock_irqsave(&io_request_lock, flags);
+#endif
+
+	tul_isr(&tul_hcs[7]);
+
+#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95)
+	spin_unlock_irqrestore(&io_request_lock, flags);
+#endif
+}
+
+/* 
+ * Dump the current driver status and panic...
+ */
+static void i91u_panic(char *msg)
+{
+	printk("\ni91u_panic: %s\n", msg);
+	panic("i91u panic");
+}

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