drivers/scsi/inia100.c

/**************************************************************************
 * 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 General 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.
 * 06/25/02 Doug Ledford <dledford@redhat.com> - v1.02d
 *          - Remove limit on number of controllers
 *          - Port to DMA mapping API
 *          - Clean up interrupt handler registration
 *          - Fix memory leaks
 *          - Fix allocation of scsi host structs and private data
 **************************************************************************/

#include <linux/module.h>

#include <linux/errno.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/blk.h>
#include <linux/spinlock.h>
#include <linux/stat.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/ioport.h>
//#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/proc_fs.h>

#include <asm/io.h>
#include <asm/irq.h>

#include "scsi.h"
#include "hosts.h"
#include "inia100.h"

static Scsi_Host_Template driver_template = INIA100;
#include "scsi_module.c"

#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 = "v1.02d";

/* set by inia100_setup according to the command line */
static int setup_called = 0;

/* ---- INTERNAL VARIABLES ---- */
#define NUMBER(arr)     (sizeof(arr) / sizeof(arr[0]))
static char *setup_str = (char *) NULL;

static void inia100_intr(int, void *, struct pt_regs *);
static void inia100_panic(char *msg);

/* ---- EXTERNAL FUNCTIONS ---- */
extern void inia100SCBPost(BYTE * pHcb, BYTE * pScb);
extern int Addinia100_into_Adapter_table(WORD, WORD, struct pci_dev *, int);
extern int init_inia100Adapter_table(int);
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_release_dma(ORC_HCS * hcsp, Scsi_Cmnd * cmnd);
extern void orc_interrupt(ORC_HCS * hcsp);
extern int orc_device_reset(ORC_HCS * pHCB, Scsi_Cmnd *SCpnt, unsigned int target);
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, Scsi_Cmnd *SCpnt);
extern void get_orcPCIConfig(ORC_HCS * pCurHcb, int ch_idx);
extern int init_orchid(ORC_HCS * hcsp);
extern struct inia100_Adpt_Struc *inia100_adpt;

/*****************************************************************************
 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;

	spin_lock_irqsave(&(pHCB->pSRB_lock), flags);

	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;
	spin_unlock_irqrestore(&(pHCB->pSRB_lock), flags);
	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;
	spin_lock_irqsave(&(pHCB->pSRB_lock), flags);
	if ((pSRB = (Scsi_Cmnd *) pHCB->pSRB_head) != NULL) {
		pHCB->pSRB_head = pHCB->pSRB_head->next;
		pSRB->next = NULL;
	}
	spin_unlock_irqrestore(&(pHCB->pSRB_lock), flags);
	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 iAdapters;

	iAdapters = 0;
	/*
	 * PCI-bus probe.
	 */
	if (pci_present()) {
		/*
		 * Note: I removed the struct pci_device_list stuff since this
		 * driver only cares about one device ID.  If that changes in
		 * the future it can be added in with only a very moderate
		 * amount of work.  It made the double scan of the device list
		 * for getting a count and allocating the device list easier
		 * to not have the for(i ... ) loop in there....
		 */
		unsigned int dRegValue;
		WORD wBIOS, wBASE;
#ifdef MMAPIO
		unsigned long page_offset, base;
#endif
		struct pci_dev *pdev = NULL;

		/*
		 * Get a count of adapters that we expect to be able to use.
		 * Pass that count to init_inia100Adapter_table() for malloc
		 * reasons.
		 */
		pdev = NULL;
		while((pdev=pci_find_device(ORC_VENDOR_ID, ORC_DEVICE_ID, pdev)))
		{
			if (pci_enable_device(pdev))
				continue;
			if (pci_set_dma_mask(pdev, (u64)0xffffffff)) {
				printk(KERN_WARNING "Unable to set 32bit DMA "
					"on inia100 adapter, ignoring.\n");
				continue;
			}
			iAdapters++;
		}
		if(init_inia100Adapter_table(iAdapters))
			return 0;
		/*
		 * Now go through the adapters again actually setting them up
		 * and putting them in the table this time.
		 */
		pdev = NULL;
		while((pdev=pci_find_device(ORC_VENDOR_ID, ORC_DEVICE_ID, pdev)))
		{
			/*
			 * Read sundry information from PCI BIOS.
			 */
			dRegValue = pci_resource_start(pdev, 0);
			if (dRegValue == -1) {	/* Check return code */
				printk("\n\rinia100: orchid read configuration error.\n");
				iAdapters--;
				continue;	/* Read configuration space error  */
			}

			/* <02> read from base address + 0x50 offset to get the wBIOS balue. */
			wBASE = (WORD) dRegValue;

			/* Now read the interrupt line value */
			dRegValue = pdev->irq;

			wBIOS = ORC_RDWORD(wBASE, 0x50);

			pci_set_master(pdev);

#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);
			 */
			wBASE = ioremap(base, page_offset + 256);
			if (wBASE) {
				wBASE += page_offset;
			}
#endif

			Addinia100_into_Adapter_table(wBIOS, wBASE, pdev, iAdapters);
		}	/* while(pdev=....) */
	}			/* 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;
	struct pci_dev *pdev;

	tpnt->proc_name = "inia100";
	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);

#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; i < iAdapters; i++) {
		pdev = inia100_adpt[i].ADPT_pdev;
		hreg = scsi_register(tpnt, sizeof(ORC_HCS));
		if (hreg == NULL) {
			goto out_disable;
		}
		pHCB = (ORC_HCS *)hreg->hostdata;
		pHCB->pdev = pdev;
		pHCB->pSRB_head = NULL;	/* Initial SRB save queue       */
		pHCB->pSRB_tail = NULL;	/* Initial SRB save queue       */
		pHCB->pSRB_lock = SPIN_LOCK_UNLOCKED; /* SRB save queue lock */
		pHCB->BitAllocFlagLock = SPIN_LOCK_UNLOCKED;
		/* Get total memory needed for SCB */
		sz = ORC_MAXQUEUE * sizeof(ORC_SCB);
		if ((pHCB->HCS_virScbArray = (PVOID) pci_alloc_consistent(pdev, sz, &pHCB->HCS_physScbArray)) == NULL) {
			printk("inia100: SCB memory allocation error\n");
			goto out_unregister;
		}
		memset((unsigned char *) pHCB->HCS_virScbArray, 0, sz);

		/* Get total memory needed for ESCB */
		sz = ORC_MAXQUEUE * sizeof(ESCB);
		if ((pHCB->HCS_virEscbArray = (PVOID) pci_alloc_consistent(pdev, sz, &pHCB->HCS_physEscbArray)) == NULL) {
			printk("inia100: ESCB memory allocation error\n");
			goto out_unalloc;
		}
		memset((unsigned char *) pHCB->HCS_virEscbArray, 0, sz);

		get_orcPCIConfig(pHCB, i);

		dBiosAdr = pHCB->HCS_BIOS;
		dBiosAdr = (dBiosAdr << 4);

		pbBiosAdr = phys_to_virt(dBiosAdr);

		if (init_orchid(pHCB)) {	/* Initial orchid chip    */
			printk("inia100: initial orchid fail!!\n");
			goto out_unalloc;
		}
		if (!request_region(pHCB->HCS_Base, 256, "inia100")) {
			printk(KERN_WARNING "inia100: io port 0x%x, is busy.\n", 
			       pHCB->HCS_Base);
			return (0);
		}

		hreg->io_port = pHCB->HCS_Base;
		hreg->n_io_port = 0xff;
		hreg->can_queue = ORC_MAXQUEUE;	/* 03/05/98                   */

		hreg->unique_id = pHCB->HCS_Base;
		hreg->max_id = pHCB->HCS_MaxTar;

		hreg->max_lun = 16;	/* 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           */

#if 1
		hreg->sg_tablesize = TOTAL_SG_ENTRY;	/* Maximun support is 32 */
#else
		hreg->sg_tablesize = SG_NONE;	/* No SG                        */
#endif

		/* Initial orc chip           */
		ok = request_irq(pHCB->HCS_Intr, inia100_intr, SA_SHIRQ, "inia100", hreg);
		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");
				}
			}
			goto out_irq;
		}
	}

	tpnt->this_id = -1;
	tpnt->can_queue = 1;
	kfree(inia100_adpt);
	return 1;

out_irq:
        release_region(pHCB->HCS_Base, 256);
out_unalloc:
	if(pHCB->HCS_virEscbArray) {
		pci_free_consistent(pHCB->pdev, ORC_MAXQUEUE * sizeof(ESCB),
			pHCB->HCS_virEscbArray, pHCB->HCS_physEscbArray);
		pHCB->HCS_virEscbArray = NULL;
	}
	if(pHCB->HCS_virScbArray) {
		pci_free_consistent(pHCB->pdev, ORC_MAXQUEUE * sizeof(ORC_SCB),
			pHCB->HCS_virScbArray, pHCB->HCS_physScbArray);
		pHCB->HCS_virScbArray = NULL;
	}
out_unregister:
	scsi_unregister(hreg);
out_disable:
	pci_disable_device(pdev);
	kfree(inia100_adpt);
	return i;
}

/*****************************************************************************
 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, count_sg;
	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->device->id;
	pSCB->SCB_Lun = SCpnt->device->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;
			pSrbSG = (struct scatterlist *) SCpnt->request_buffer;
			count_sg = pci_map_sg(pHCB->pdev, pSrbSG, SCpnt->use_sg,
				scsi_to_pci_dma_dir(SCpnt->sc_data_direction));
			pSCB->SCB_SGLen = (U32) (count_sg * 8);
			for (i = 0; i < count_sg; i++, pSG++, pSrbSG++) {
				pSG->SG_Ptr = (U32) sg_dma_address(pSrbSG);
				pSG->SG_Len = (U32) sg_dma_len(pSrbSG);
				TotalLen += (U32) sg_dma_len(pSrbSG);
			}
		} else if (SCpnt->request_bufflen != 0) {/* Non SG */
			pSCB->SCB_SGLen = 0x8;
			pSG->SG_Ptr = (U32) pci_map_single(pHCB->pdev,
				SCpnt->request_buffer, SCpnt->request_bufflen,
				scsi_to_pci_dma_dir(SCpnt->sc_data_direction));
			SCpnt->host_scribble = (void *)pSG->SG_Ptr;
			pSG->SG_Len = (U32) SCpnt->request_bufflen;
		} else {
			pSCB->SCB_SGLen = 0;
			pSG->SG_Ptr = 0;
			pSG->SG_Len = 0;
		}
	}
	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->device->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.
*****************************************************************************/
static int inia100_queue(Scsi_Cmnd * SCpnt, void (*done) (Scsi_Cmnd *))
{
	register ORC_SCB *pSCB;
	ORC_HCS *pHCB;		/* Point to Host adapter control block */

	pHCB = (ORC_HCS *) SCpnt->device->host->hostdata;
	SCpnt->scsi_done = done;
	/* Get free SCSI control block  */
	if ((pSCB = orc_alloc_scb(pHCB)) == NULL) {
		inia100AppendSRBToQueue(pHCB, SCpnt);	/* Buffer this request  */
		/* printk("inia100_entry: can't allocate SCB\n"); */
		return (0);
	}
	inia100BuildSCB(pHCB, pSCB, SCpnt);
	orc_exec_scb(pHCB, pSCB);	/* Start execute SCB            */

	return (0);
}

/*****************************************************************************
 Function name  : inia100_abort
 Description    : Abort a queued command.
	                 (commands that are on the bus can't be aborted easily)
 Input          : pHCB  -       Pointer to host adapter structure
 Output         : None.
 Return         : pSRB  -       Pointer to SCSI request block.
*****************************************************************************/
static int inia100_abort(Scsi_Cmnd * SCpnt)
{
	ORC_HCS *hcsp;

	hcsp = (ORC_HCS *) SCpnt->device->host->hostdata;
	return orc_abort_srb(hcsp, SCpnt);
}

/*****************************************************************************
 Function name  : inia100_reset
 Description    : Reset registers, reset a hanging bus and
                  kill active and disconnected commands for target w/o soft reset
 Input          : pHCB  -       Pointer to host adapter structure
 Output         : None.
 Return         : pSRB  -       Pointer to SCSI request block.
*****************************************************************************/
static int inia100_bus_reset(Scsi_Cmnd * SCpnt)
{				/* I need Host Control Block Information */
	ORC_HCS *pHCB;
	pHCB = (ORC_HCS *) SCpnt->device->host->hostdata;
	return orc_reset_scsi_bus(pHCB);
}

/*****************************************************************************
 Function name  : inia100_device_reset
 Description    : Reset the device
 Input          : pHCB  -       Pointer to host adapter structure
 Output         : None.
 Return         : pSRB  -       Pointer to SCSI request block.
*****************************************************************************/
static int inia100_device_reset(Scsi_Cmnd * SCpnt)
{				/* I need Host Control Block Information */
	ORC_HCS *pHCB;
	pHCB = (ORC_HCS *) SCpnt->device->host->hostdata;
	return orc_device_reset(pHCB, SCpnt, SCpnt->device->id);

}

/*****************************************************************************
 Function name  : inia100SCBPost
 Description    : This is callback routine be called when orc finish one
			SCSI command.
 Input          : pHCB  -       Pointer to host adapter control block.
		  pSCB  -       Pointer to SCSI control block.
 Output         : None.
 Return         : None.
*****************************************************************************/
void inia100SCBPost(BYTE * pHcb, BYTE * pScb)
{
	Scsi_Cmnd *pSRB;	/* Pointer to SCSI request block */
	ORC_HCS *pHCB;
	ORC_SCB *pSCB;
	ESCB *pEScb;

	pHCB = (ORC_HCS *) pHcb;
	pSCB = (ORC_SCB *) pScb;
	pEScb = pSCB->SCB_EScb;
	if ((pSRB = (Scsi_Cmnd *) pEScb->SCB_Srb) == 0) {
		printk("inia100SCBPost: SRB pointer is empty\n");
		orc_release_scb(pHCB, pSCB);	/* Release SCB for current channel */
		return;
	}
	pEScb->SCB_Srb = NULL;

	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 CCB Operation Code-The first byte of the CCB was invalid. */

	default:
		printk("inia100: %x %x\n", pSCB->SCB_HaStat, pSCB->SCB_TaStat);
		pSCB->SCB_HaStat = DID_ERROR;	/* Couldn't find any better */
		break;
	}

	if (pSCB->SCB_TaStat == 2) {	/* Check condition              */
		memcpy((unsigned char *) &pSRB->sense_buffer[0],
		   (unsigned char *) &pEScb->ESCB_SGList[0], SENSE_SIZE);
	}
	pSRB->result = pSCB->SCB_TaStat | (pSCB->SCB_HaStat << 16);
	orc_release_dma(pHCB, pSRB);  /* release DMA before we call scsi_done */
	pSRB->scsi_done(pSRB);	/* Notify system DONE           */

	/* Find the next pending SRB    */
	if ((pSRB = inia100PopSRBFromQueue(pHCB)) != NULL) {	/* Assume resend will success   */
		inia100BuildSCB(pHCB, pSCB, pSRB);	/* Create corresponding SCB     */
		orc_exec_scb(pHCB, pSCB);	/* Start execute SCB            */
	} else {
		orc_release_scb(pHCB, pSCB);	/* Release SCB for current channel */
	}
	return;
}

/*
 * Interrupt handler (main routine of the driver)
 */
static void inia100_intr(int irqno, void *devid, struct pt_regs *regs)
{
	struct Scsi_Host *host = (struct Scsi_Host *)devid;
	ORC_HCS *pHcb;
	unsigned long flags;

 	pHcb = (ORC_HCS *)host->hostdata;	/* Host adapter control block */
	spin_lock_irqsave(host->host_lock, flags);
	orc_interrupt(pHcb);
	spin_unlock_irqrestore(host->host_lock, flags);
}

/* 
 * Dump the current driver status and panic...
 */
static void inia100_panic(char *msg)
{
	printk("\ninia100_panic: %s\n", msg);
	panic("inia100 panic");
}

/*
 * Release ressources
 */
static int inia100_release(struct Scsi_Host *hreg)
{
	ORC_HCS *pHCB = (ORC_HCS *)hreg->hostdata;

        free_irq(hreg->irq, hreg);
        release_region(hreg->io_port, 256);
	if(pHCB->HCS_virEscbArray) {
		pci_free_consistent(pHCB->pdev, ORC_MAXQUEUE * sizeof(ESCB),
			pHCB->HCS_virEscbArray, pHCB->HCS_physEscbArray);
		pHCB->HCS_virEscbArray = NULL;
	}
	if(pHCB->HCS_virScbArray) {
		pci_free_consistent(pHCB->pdev, ORC_MAXQUEUE * sizeof(ORC_SCB),
			pHCB->HCS_virScbArray, pHCB->HCS_physScbArray);
		pHCB->HCS_virScbArray = NULL;
	}
	pci_disable_device(pHCB->pdev);
        return 0;
} 

MODULE_LICENSE("Dual BSD/GPL");
/*#include "inia100scsi.c" */