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/**************************************************************************

 * Initio A100 device driver for Linux.

 *

 * Copyright (c) 1994-1998 Initio Corporation

 * 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.

 *

 **************************************************************************

 *

 * module: inia100.c

 * DESCRIPTION:

 *      This is the Linux low-level SCSI driver for Initio INIA100 SCSI host

 *      adapters

 * 09/24/98 hl - v1.02 initial production release.

 * 12/19/98 bv - v1.02a Use spinlocks for 2.1.95 and up.

 **************************************************************************/

#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>

#include <linux/delay.h>

#include <linux/sched.h>

#if LINUX_VERSION_CODE <= CVT_LINUX_VERSION(2,1,92)

#include <linux/bios32.h>

#endif

#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 "inia100.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 "inia100.h"

#endif

#ifdef MODULE

Scsi_Host_Template driver_template = INIA100;

#include "scsi_module.c"

#endif

#define ORC_RDWORD(x,y)         (short)(inl((int)((ULONG)((ULONG)x+(UCHAR)y)) ))

char *inia100_Copyright = "Copyright (C) 1998-99";

char *inia100_InitioName = "by Initio Corporation";

char *inia100_ProductName = "INI-A100U2W";

char *inia100_Version = "v1.02a";

#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(1,3,0)

struct proc_dir_entry proc_scsi_inia100 =

{

        PROC_SCSI_INIA100, 7, "INIA100",

        S_IFDIR | S_IRUGO | S_IXUGO, 2,

        0, 0, 0, NULL, NULL, NULL, NULL, NULL, NULL, NULL

};

#endif

/* set by inia100_setup according to the command line */

static int setup_called = 0;

static int orc_num_ch = MAX_SUPPORTED_ADAPTERS;         /* Maximum 4 adapters           */

/* ---- INTERNAL VARIABLES ---- */

#define NUMBER(arr)     (sizeof(arr) / sizeof(arr[0]))

static char *setup_str = (char *) NULL;

#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(1,3,0)

static void inia100_intr0(int irq, void *dev_id, struct pt_regs *);

static void inia100_intr1(int irq, void *dev_id, struct pt_regs *);

static void inia100_intr2(int irq, void *dev_id, struct pt_regs *);

static void inia100_intr3(int irq, void *dev_id, struct pt_regs *);

static void inia100_intr4(int irq, void *dev_id, struct pt_regs *);

static void inia100_intr5(int irq, void *dev_id, struct pt_regs *);

static void inia100_intr6(int irq, void *dev_id, struct pt_regs *);

static void inia100_intr7(int irq, void *dev_id, struct pt_regs *);

#else

static void inia100_intr0(int irq, struct pt_regs *);

static void inia100_intr1(int irq, struct pt_regs *);

static void inia100_intr2(int irq, struct pt_regs *);

static void inia100_intr3(int irq, struct pt_regs *);

static void inia100_intr4(int irq, struct pt_regs *);

static void inia100_intr5(int irq, struct pt_regs *);

static void inia100_intr6(int irq, struct pt_regs *);

static void inia100_intr7(int irq, struct pt_regs *);

#endif

static void inia100_panic(char *msg);

void inia100SCBPost(BYTE * pHcb, BYTE * pScb);

/* ---- EXTERNAL VARIABLES ---- */

extern int Addinia100_into_Adapter_table(WORD, WORD, BYTE, BYTE, BYTE);

extern void init_inia100Adapter_table(void);

extern ORC_SCB *orc_alloc_scb(ORC_HCS * hcsp);

extern void orc_exec_scb(ORC_HCS * hcsp, ORC_SCB * scbp);

extern void orc_release_scb(ORC_HCS * hcsp, ORC_SCB * scbp);

extern void orc_interrupt(ORC_HCS * hcsp);

extern int orc_device_reset(ORC_HCS * pHCB, ULONG SCpnt, unsigned int target, unsigned int ResetFlags);

extern int orc_reset_scsi_bus(ORC_HCS * pHCB);

extern int abort_SCB(ORC_HCS * hcsp, ORC_SCB * pScb);

extern int orc_abort_srb(ORC_HCS * hcsp, ULONG SCpnt);

extern void get_orcPCIConfig(ORC_HCS * pCurHcb, int ch_idx);

extern int init_orchid(ORC_HCS * hcsp);

extern int orc_num_scb;

extern ORC_HCS orc_hcs[];

/*****************************************************************************

 Function name  : inia100AppendSRBToQueue

 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 inia100AppendSRBToQueue(ORC_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  : inia100PopSRBFromQueue

 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 *inia100PopSRBFromQueue(ORC_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 = (Scsi_Cmnd *) 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);

}

/*****************************************************************************

 Function name  : inia100_setup

 Description    :

 Input          : pHCB  -       Pointer to host adapter structure

 Output         : None.

 Return         : pSRB  -       Pointer to SCSI request block.

*****************************************************************************/

void inia100_setup(char *str, int *ints)

{

        if (setup_called)

                inia100_panic("inia100: inia100_setup called twice.\n");

        setup_called = ints[0];

        setup_str = str;

}

/*****************************************************************************

 Function name  : orc_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 orc_ReturnNumberOfAdapters(void)

{

        unsigned int i, iAdapters;

        iAdapters = 0;

        /*

         * PCI-bus probe.

         */

        if (pcibios_present()) {

                struct {

                        unsigned short vendor_id;

                        unsigned short device_id;

                } const inia100_pci_devices[] =

                {

                        {ORC_VENDOR_ID, I920_DEVICE_ID},

                        {ORC_VENDOR_ID, ORC_DEVICE_ID}

                };

                unsigned int dRegValue;

                unsigned short command;

                WORD wBIOS, wBASE;

                BYTE bPCIBusNum, bInterrupt, bPCIDeviceNum;

#ifdef MMAPIO

                unsigned long page_offset, base;

#endif

#if LINUX_VERSION_CODE > CVT_LINUX_VERSION(2,1,92)

                struct pci_dev *pdev = NULL;

#else

                int index;

                unsigned char pci_bus, pci_devfn;

#endif

                bPCIBusNum = 0;

                bPCIDeviceNum = 0;

                init_inia100Adapter_table();

                for (i = 0; i < NUMBER(inia100_pci_devices); i++) {

#if LINUX_VERSION_CODE > CVT_LINUX_VERSION(2,1,92)

                        pdev = NULL;

                        while ((pdev = pci_find_device(inia100_pci_devices[i].vendor_id,

                                        inia100_pci_devices[i].device_id,

                                                       pdev)))

#else

                        index = 0;

                        while (!(pcibios_find_device(inia100_pci_devices[i].vendor_id,

                                        inia100_pci_devices[i].device_id,

                                         index++, &pci_bus, &pci_devfn)))

#endif

                        {

                                if (iAdapters >= MAX_SUPPORTED_ADAPTERS)

                                        break;  /* Never greater than maximum   */

                                if (i == 0) {

                                        /*

                                           printk("inia100: The RAID controller is not supported by\n");

                                           printk("inia100:         this driver, we are ignoring it.\n");

                                         */

                                } else {

                                        /*

                                         * Read sundry information from PCI BIOS.

                                         */

#if LINUX_VERSION_CODE > CVT_LINUX_VERSION(2,1,92)

                                        bPCIBusNum = pdev->bus->number;

                                        bPCIDeviceNum = pdev->devfn;

                                        dRegValue = pdev->base_address[0];

                                        if (dRegValue == -1) {  /* Check return code            */

                                                printk("\n\rinia100: orchid 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  */

                                        dRegValue = pdev->irq;

                                        bInterrupt = dRegValue & 0xFF;  /* Assign interrupt line      */

                                        pci_read_config_word(pdev, PCI_COMMAND, &command);

                                        pci_write_config_word(pdev, PCI_COMMAND,

                                                              command | PCI_COMMAND_MASTER | PCI_COMMAND_IO);

#else

                                        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\rinia100: Orchid 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);

#endif

                                        wBASE &= PCI_BASE_ADDRESS_IO_MASK;

                                        wBIOS = ORC_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 (Addinia100_into_Adapter_table(wBIOS, wBASE, bInterrupt, bPCIBusNum,

                                            bPCIDeviceNum) == SUCCESSFUL)

                                                iAdapters++;

                                }

                        }       /* while(pdev=....) */

                }               /* for PCI_DEVICES */

        }                       /* PCI BIOS present */

        return (iAdapters);

}

/*****************************************************************************

 Function name  : inia100_detect

 Description    :

 Input          : pHCB  -       Pointer to host adapter structure

 Output         : None.

 Return         : pSRB  -       Pointer to SCSI request block.

*****************************************************************************/

int inia100_detect(Scsi_Host_Template * tpnt)

{

        ORC_HCS *pHCB;

        struct Scsi_Host *hreg;

        U32 sz;

        U32 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_inia100;

#endif

        if (setup_called) {

                /* Setup by inia100_setup          */

                printk("inia100: processing commandline: ");

        }

        /* Get total number of adapters in the motherboard */

        iAdapters = orc_ReturnNumberOfAdapters();

        /* printk("inia100: Total Initio Adapters = %d\n", iAdapters); */

        if (iAdapters == 0)      /* If no orc founded, return */

                return (0);

        orc_num_ch = (iAdapters > orc_num_ch) ? orc_num_ch : iAdapters;

        orc_num_scb = ORC_MAXQUEUE;

        /* clear the memory needed for HCS */

        i = orc_num_ch * sizeof(ORC_HCS);

        memset((unsigned char *) &orc_hcs[0], 0, i);      /* Initialize orc_hcs 0   */

#if 0

        printk("orc_num_scb= %x orc_num_ch= %x hcsize= %x scbsize= %x escbsize= %x\n",

               orc_num_scb, orc_num_ch, sizeof(ORC_HCS), sizeof(ORC_SCB), sizeof(ESCB));

#endif

        for (i = 0, pHCB = &orc_hcs[0];           /* Get pointer for control block */

             i < orc_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

                /* Get total memory needed for SCB */

                sz = orc_num_scb * sizeof(ORC_SCB);

                if ((pHCB->HCS_virScbArray = (PVOID) kmalloc(sz, GFP_ATOMIC | GFP_DMA)) == NULL) {

                        printk("inia100: SCB memory allocation error\n");

                        return (0);

                }

                memset((unsigned char *) pHCB->HCS_virScbArray, 0, sz);

                pHCB->HCS_physScbArray = (U32) VIRT_TO_BUS(pHCB->HCS_virScbArray);

                /* Get total memory needed for ESCB */

                sz = orc_num_scb * sizeof(ESCB);

                if ((pHCB->HCS_virEscbArray = (PVOID) kmalloc(sz, GFP_ATOMIC | GFP_DMA)) == NULL) {

                        printk("inia100: ESCB memory allocation error\n");

                        return (0);

                }

                memset((unsigned char *) pHCB->HCS_virEscbArray, 0, sz);

                pHCB->HCS_physEscbArray = (U32) VIRT_TO_BUS(pHCB->HCS_virEscbArray);

                request_region(pHCB->HCS_Base, 0x100, "inia100");       /* Register */

                get_orcPCIConfig(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

                if (init_orchid(pHCB)) {        /* Initial orchid chip    */

                        printk("inia100: initial orchid fail!!\n");

                        return (0);

                }

                hreg = scsi_register(tpnt, sizeof(ORC_HCS));

                if (hreg == NULL) {

                        printk("Invalid scsi_register pointer.\n");

                }

                hreg->io_port = pHCB->HCS_Base;

                hreg->n_io_port = 0xff;

                hreg->can_queue = orc_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->max_lun = 8;

   hreg->max_channel = 1;

 */

                hreg->irq = pHCB->HCS_Intr;

                hreg->this_id = pHCB->HCS_SCSI_ID;      /* Assign HCS index           */

                hreg->base = (UCHAR *) pHCB;

#if 1

                hreg->sg_tablesize = TOTAL_SG_ENTRY;    /* Maximun support is 32 */

#else

                hreg->sg_tablesize = SG_NONE;   /* No SG                        */

#endif

                /* Initial orc chip           */

                switch (i) {

#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(1,3,0)

                case 0:

                        ok = request_irq(pHCB->HCS_Intr, inia100_intr0, SA_INTERRUPT | SA_SHIRQ, "inia100", NULL);

                        break;

                case 1:

                        ok = request_irq(pHCB->HCS_Intr, inia100_intr1, SA_INTERRUPT | SA_SHIRQ, "inia100", NULL);

                        break;

                case 2:

                        ok = request_irq(pHCB->HCS_Intr, inia100_intr2, SA_INTERRUPT | SA_SHIRQ, "inia100", NULL);

                        break;

                case 3:

                        ok = request_irq(pHCB->HCS_Intr, inia100_intr3, SA_INTERRUPT | SA_SHIRQ, "inia100", NULL);

                        break;

                case 4:

                        ok = request_irq(pHCB->HCS_Intr, inia100_intr4, SA_INTERRUPT | SA_SHIRQ, "inia100", NULL);

                        break;

                case 5:

                        ok = request_irq(pHCB->HCS_Intr, inia100_intr5, SA_INTERRUPT | SA_SHIRQ, "inia100", NULL);

                        break;

                case 6:

                        ok = request_irq(pHCB->HCS_Intr, inia100_intr6, SA_INTERRUPT | SA_SHIRQ, "inia100", NULL);

                        break;

                case 7:

                        ok = request_irq(pHCB->HCS_Intr, inia100_intr7, SA_INTERRUPT | SA_SHIRQ, "inia100", NULL);

                        break;

                default:

                        inia100_panic("inia100: Too many host adapters\n");

                        break;

                }

                if (ok < 0) {

                        if (ok == -EINVAL) {

                                printk("inia100: bad IRQ %d.\n", pHCB->HCS_Intr);

                                printk("         Contact author.\n");

                        } else {

                                if (ok == -EBUSY)

                                        printk("inia100: IRQ %d already in use. Configure another.\n", pHCB->HCS_Intr);

                                else {

                                        printk("\ninia100: Unexpected error code on requesting IRQ %d.\n",

                                               pHCB->HCS_Intr);

                                        printk("         Contact author.\n");

                                }

                        }

                        inia100_panic("inia100: driver needs an IRQ.\n");

                }

#endif

        }

        tpnt->this_id = -1;

        tpnt->can_queue = 1;

        return 1;

}

/*****************************************************************************

 Function name  : inia100BuildSCB

 Description    :

 Input          : pHCB  -       Pointer to host adapter structure

 Output         : None.

 Return         : pSRB  -       Pointer to SCSI request block.

*****************************************************************************/

static void inia100BuildSCB(ORC_HCS * pHCB, ORC_SCB * pSCB, Scsi_Cmnd * SCpnt)

{                               /* Create corresponding SCB     */

        struct scatterlist *pSrbSG;

        ORC_SG *pSG;            /* Pointer to SG list           */

        int i;

        U32 TotalLen;

        ESCB *pEScb;

        pEScb = pSCB->SCB_EScb;

        pEScb->SCB_Srb = SCpnt;

        pSG = NULL;

        pSCB->SCB_Opcode = ORC_EXECSCSI;

        pSCB->SCB_Flags = SCF_NO_DCHK;  /* Clear done bit               */

        pSCB->SCB_Target = SCpnt->target;

        pSCB->SCB_Lun = SCpnt->lun;

        pSCB->SCB_Reserved0 = 0;

        pSCB->SCB_Reserved1 = 0;

        pSCB->SCB_SGLen = 0;

        if ((pSCB->SCB_XferLen = (U32) SCpnt->request_bufflen)) {

                pSG = (ORC_SG *) & pEScb->ESCB_SGList[0];

                if (SCpnt->use_sg) {

                        TotalLen = 0;

                        pSCB->SCB_SGLen = (U32) (SCpnt->use_sg * 8);

                        pSrbSG = (struct scatterlist *) SCpnt->request_buffer;

                        for (i = 0; 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

                                pSG->SG_Len = (U32) pSrbSG->length;

                                TotalLen += (U32) pSrbSG->length;

                        }

                } else {        /* Non SG                       */

                        pSCB->SCB_SGLen = 0x8;

#if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(1,3,0)

                        pSG->SG_Ptr = (U32) (VIRT_TO_BUS(SCpnt->request_buffer));

#else

                        pSG->SG_PTR = (U32) SCpnt->request_buffer;

#endif

                        pSG->SG_Len = (U32) SCpnt->request_bufflen;

                }

        }

        pSCB->SCB_SGPAddr = (U32) pSCB->SCB_SensePAddr;

        pSCB->SCB_HaStat = 0;

        pSCB->SCB_TaStat = 0;

        pSCB->SCB_Link = 0xFF;

        pSCB->SCB_SenseLen = SENSE_SIZE;

        pSCB->SCB_CDBLen = SCpnt->cmd_len;

        if (pSCB->SCB_CDBLen >= IMAX_CDB) {

                printk("max cdb length= %x\b", SCpnt->cmd_len);

                pSCB->SCB_CDBLen = IMAX_CDB;

        }

        pSCB->SCB_Ident = SCpnt->lun | DISC_ALLOW;

        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               */

        }

        memcpy(&pSCB->SCB_CDB[0], &SCpnt->cmnd, pSCB->SCB_CDBLen);

        return;

}

/*****************************************************************************

 Function name  : inia100_queue

 Description    : Queue a command and setup interrupts for a free bus.

 Input          : pHCB  -       Pointer to host adapter structure

 Output         : None.

 Return         : pSRB  -       Pointer to SCSI request block.

*****************************************************************************/

int inia100_queue(Scsi_Cmnd * SCpnt, void (*done) (Scsi_Cmnd *))

{

        register ORC_SCB *pSCB;

        ORC_HCS *pHCB;          /* Point to Host adapter control block */

        if (SCpnt->lun > 16) {

                SCpnt->result = (DID_TIME_OUT << 16);

                done(SCpnt);    /* Notify system DONE           */

                return (0);

        }

        pHCB = (ORC_HCS *) SCpnt->host->base;

        SCpnt->scsi_done = done;

        /* Get free SCSI control block  */

        if ((pSCB = orc_alloc_scb(pHCB)) == NULL) {