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OpenCloudOS-Kernel/drivers/scsi/pci2000.c

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/****************************************************************************
* Perceptive Solutions, Inc. PCI-2000 device driver for Linux.
*
* pci2000.c - Linux Host Driver for PCI-2000 IntelliCache SCSI Adapters
*
* Copyright (c) 1997-1999 Perceptive Solutions, Inc.
* All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that redistributions of source
* code retain the above copyright notice and this comment without
* modification.
*
* Technical updates and product information at:
* http://www.psidisk.com
*
* Please send questions, comments, bug reports to:
* tech@psidisk.com Technical Support
*
*
* Revisions 1.10 Jan-21-1999
* - Fixed sign on message to reflect proper controller name.
* - Added support for RAID status monitoring and control.
*
* Revisions 1.11 Mar-22-1999
* - Fixed control timeout to not lock up the entire system if
* controller goes offline completely.
*
* Revisions 1.12 Mar-26-1999
* - Fixed spinlock and PCI configuration.
*
* Revisions 1.20 Mar-27-2000
* - Added support for dynamic DMA
*
****************************************************************************/
#define PCI2000_VERSION "1.20"
#include <linux/blkdev.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/string.h>
#include <linux/pci.h>
#include <linux/ioport.h>
#include <linux/delay.h>
#include <linux/sched.h>
#include <linux/proc_fs.h>
#include <linux/stat.h>
#include <linux/spinlock.h>
#include <asm/dma.h>
#include <asm/system.h>
#include <asm/io.h>
#include "scsi.h"
#include <scsi/scsi_host.h>
#include "pci2000.h"
#include "psi_roy.h"
//#define DEBUG 1
#ifdef DEBUG
#define DEB(x) x
#define STOP_HERE {int st;for(st=0;st<100;st++){st=1;}}
#else
#define DEB(x)
#define STOP_HERE
#endif
typedef struct
{
unsigned int address;
unsigned int length;
} SCATGATH, *PSCATGATH;
typedef struct
{
Scsi_Cmnd *SCpnt;
PSCATGATH scatGath;
dma_addr_t scatGathDma;
UCHAR *cdb;
dma_addr_t cdbDma;
UCHAR tag;
} DEV2000, *PDEV2000;
typedef struct
{
ULONG basePort;
ULONG mb0;
ULONG mb1;
ULONG mb2;
ULONG mb3;
ULONG mb4;
ULONG cmd;
ULONG tag;
ULONG irqOwned;
struct pci_dev *pdev;
DEV2000 dev[MAX_BUS][MAX_UNITS];
} ADAPTER2000, *PADAPTER2000;
#define HOSTDATA(host) ((PADAPTER2000)&host->hostdata)
#define consistentLen (MAX_BUS * MAX_UNITS * (16 * sizeof (SCATGATH) + MAX_COMMAND_SIZE))
static struct Scsi_Host *PsiHost[MAXADAPTER] = {NULL,}; // One for each adapter
static int NumAdapters = 0;
/****************************************************************
* Name: WaitReady :LOCAL
*
* Description: Wait for controller ready.
*
* Parameters: padapter - Pointer adapter data structure.
*
* Returns: TRUE on not ready.
*
****************************************************************/
static int WaitReady (PADAPTER2000 padapter)
{
ULONG z;
for ( z = 0; z < (TIMEOUT_COMMAND * 4); z++ )
{
if ( !inb_p (padapter->cmd) )
return FALSE;
udelay (250);
};
return TRUE;
}
/****************************************************************
* Name: WaitReadyLong :LOCAL
*
* Description: Wait for controller ready.
*
* Parameters: padapter - Pointer adapter data structure.
*
* Returns: TRUE on not ready.
*
****************************************************************/
static int WaitReadyLong (PADAPTER2000 padapter)
{
ULONG z;
for ( z = 0; z < (5000 * 4); z++ )
{
if ( !inb_p (padapter->cmd) )
return FALSE;
udelay (250);
};
return TRUE;
}
/****************************************************************
* Name: OpDone :LOCAL
*
* Description: Clean up operation and issue done to caller.
*
* Parameters: SCpnt - Pointer to SCSI command structure.
* status - Caller status.
*
* Returns: Nothing.
*
****************************************************************/
static void OpDone (Scsi_Cmnd *SCpnt, ULONG status)
{
SCpnt->result = status;
SCpnt->scsi_done (SCpnt);
}
/****************************************************************
* Name: Command :LOCAL
*
* Description: Issue queued command to the PCI-2000.
*
* Parameters: padapter - Pointer to adapter information structure.
* cmd - PCI-2000 command byte.
*
* Returns: Non-zero command tag if operation is accepted.
*
****************************************************************/
static UCHAR Command (PADAPTER2000 padapter, UCHAR cmd)
{
outb_p (cmd, padapter->cmd);
if ( WaitReady (padapter) )
return 0;
if ( inw_p (padapter->mb0) )
return 0;
return inb_p (padapter->mb1);
}
/****************************************************************
* Name: BuildSgList :LOCAL
*
* Description: Build the scatter gather list for controller.
*
* Parameters: SCpnt - Pointer to SCSI command structure.
* padapter - Pointer to adapter information structure.
* pdev - Pointer to adapter device structure.
*
* Returns: Non-zero in not scatter gather.
*
****************************************************************/
static int BuildSgList (Scsi_Cmnd *SCpnt, PADAPTER2000 padapter, PDEV2000 pdev)
{
int z;
int zc;
struct scatterlist *sg;
if ( SCpnt->use_sg )
{
sg = (struct scatterlist *)SCpnt->request_buffer;
zc = pci_map_sg (padapter->pdev, sg, SCpnt->use_sg, SCpnt->sc_data_direction);
for ( z = 0; z < zc; z++ )
{
pdev->scatGath[z].address = cpu_to_le32 (sg_dma_address (sg));
pdev->scatGath[z].length = cpu_to_le32 (sg_dma_len (sg++));
}
outl (pdev->scatGathDma, padapter->mb2);
outl ((zc << 24) | SCpnt->request_bufflen, padapter->mb3);
return FALSE;
}
if ( !SCpnt->request_bufflen)
{
outl (0, padapter->mb2);
outl (0, padapter->mb3);
return TRUE;
}
SCpnt->SCp.have_data_in = pci_map_single (padapter->pdev,
SCpnt->request_buffer, SCpnt->request_bufflen,
SCpnt->sc_data_direction);
outl (SCpnt->SCp.have_data_in, padapter->mb2);
outl (SCpnt->request_bufflen, padapter->mb3);
return TRUE;
}
/*********************************************************************
* Name: PsiRaidCmd
*
* Description: Execute a simple command.
*
* Parameters: padapter - Pointer to adapter control structure.
* cmd - Roy command byte.
*
* Returns: Return error status.
*
********************************************************************/
static int PsiRaidCmd (PADAPTER2000 padapter, char cmd)
{
if ( WaitReady (padapter) ) // test for command register ready
return DID_TIME_OUT;
outb_p (cmd, padapter->cmd); // issue command
if ( WaitReadyLong (padapter) ) // wait for adapter ready
return DID_TIME_OUT;
return DID_OK;
}
/****************************************************************
* Name: Irq_Handler :LOCAL
*
* Description: Interrupt handler.
*
* Parameters: irq - Hardware IRQ number.
* dev_id -
* regs -
*
* Returns: TRUE if drive is not ready in time.
*
****************************************************************/
static irqreturn_t Irq_Handler (int irq, void *dev_id, struct pt_regs *regs)
{
struct Scsi_Host *shost = NULL; // Pointer to host data block
PADAPTER2000 padapter; // Pointer to adapter control structure
PDEV2000 pdev;
Scsi_Cmnd *SCpnt;
UCHAR tag = 0;
UCHAR tag0;
ULONG error;
int pun;
int bus;
int z;
unsigned long flags;
int handled = 0;
DEB(printk ("\npci2000 received interrupt "));
for ( z = 0; z < NumAdapters; z++ ) // scan for interrupt to process
{
if ( PsiHost[z]->irq == (UCHAR)(irq & 0xFF) )
{
tag = inb_p (HOSTDATA(PsiHost[z])->tag);
if ( tag )
{
shost = PsiHost[z];
break;
}
}
}
if ( !shost )
{
DEB (printk ("\npci2000: not my interrupt"));
goto out;
}
handled = 1;
spin_lock_irqsave(shost->host_lock, flags);
padapter = HOSTDATA(shost);
tag0 = tag & 0x7F; // mask off the error bit
for ( bus = 0; bus < MAX_BUS; bus++ ) // scan the busses
{
for ( pun = 0; pun < MAX_UNITS; pun++ ) // scan the targets
{
pdev = &padapter->dev[bus][pun];
if ( !pdev->tag )
continue;
if ( pdev->tag == tag0 ) // is this it?
{
pdev->tag = 0;
SCpnt = pdev->SCpnt;
goto unmapProceed;
}
}
}
outb_p (0xFF, padapter->tag); // clear the op interrupt
outb_p (CMD_DONE, padapter->cmd); // complete the op
goto irq_return; // done, but, with what?
unmapProceed:;
if ( !bus )
{
switch ( SCpnt->cmnd[0] )
{
case SCSIOP_TEST_UNIT_READY:
pci_unmap_single (padapter->pdev, SCpnt->SCp.have_data_in, sizeof (SCpnt->sense_buffer), PCI_DMA_FROMDEVICE);
goto irqProceed;
case SCSIOP_READ_CAPACITY:
pci_unmap_single (padapter->pdev, SCpnt->SCp.have_data_in, 8, PCI_DMA_FROMDEVICE);
goto irqProceed;
case SCSIOP_VERIFY:
case SCSIOP_START_STOP_UNIT:
case SCSIOP_MEDIUM_REMOVAL:
goto irqProceed;
}
}
if ( SCpnt->SCp.have_data_in )
pci_unmap_single (padapter->pdev, SCpnt->SCp.have_data_in, SCpnt->request_bufflen, SCpnt->sc_data_direction);
else
{
if ( SCpnt->use_sg )
pci_unmap_sg (padapter->pdev, (struct scatterlist *)SCpnt->request_buffer, SCpnt->use_sg, SCpnt->sc_data_direction);
}
irqProceed:;
if ( tag & ERR08_TAGGED ) // is there an error here?
{
if ( WaitReady (padapter) )
{
OpDone (SCpnt, DID_TIME_OUT << 16);
goto irq_return;
}
outb_p (tag0, padapter->mb0); // get real error code
outb_p (CMD_ERROR, padapter->cmd);
if ( WaitReady (padapter) ) // wait for controller to suck up the op
{
OpDone (SCpnt, DID_TIME_OUT << 16);
goto irq_return;
}
error = inl (padapter->mb0); // get error data
outb_p (0xFF, padapter->tag); // clear the op interrupt
outb_p (CMD_DONE, padapter->cmd); // complete the op
DEB (printk ("status: %lX ", error));
if ( error == 0x00020002 ) // is this error a check condition?
{
if ( bus ) // are we doint SCSI commands?
{
OpDone (SCpnt, (DID_OK << 16) | 2);
goto irq_return;
}
if ( *SCpnt->cmnd == SCSIOP_TEST_UNIT_READY )
OpDone (SCpnt, (DRIVER_SENSE << 24) | (DID_OK << 16) | 2); // test caller we have sense data too
else
OpDone (SCpnt, DID_ERROR << 16);
goto irq_return;
}
OpDone (SCpnt, DID_ERROR << 16);
goto irq_return;
}
outb_p (0xFF, padapter->tag); // clear the op interrupt
outb_p (CMD_DONE, padapter->cmd); // complete the op
OpDone (SCpnt, DID_OK << 16);
irq_return:
spin_unlock_irqrestore(shost->host_lock, flags);
out:
return IRQ_RETVAL(handled);
}
/****************************************************************
* Name: Pci2000_QueueCommand
*
* Description: Process a queued command from the SCSI manager.
*
* Parameters: SCpnt - Pointer to SCSI command structure.
* done - Pointer to done function to call.
*
* Returns: Status code.
*
****************************************************************/
int Pci2000_QueueCommand (Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *))
{
UCHAR *cdb = (UCHAR *)SCpnt->cmnd; // Pointer to SCSI CDB
PADAPTER2000 padapter = HOSTDATA(SCpnt->device->host); // Pointer to adapter control structure
int rc = -1; // command return code
UCHAR bus = SCpnt->device->channel;
UCHAR pun = SCpnt->device->id;
UCHAR lun = SCpnt->device->lun;
UCHAR cmd;
PDEV2000 pdev = &padapter->dev[bus][pun];
if ( !done )
{
printk("pci2000_queuecommand: %02X: done can't be NULL\n", *cdb);
return 0;
}
SCpnt->scsi_done = done;
SCpnt->SCp.have_data_in = 0;
pdev->SCpnt = SCpnt; // Save this command data
if ( WaitReady (padapter) )
{
rc = DID_ERROR;
goto finished;
}
outw_p (pun | (lun << 8), padapter->mb0);
if ( bus )
{
DEB (if(*cdb) printk ("\nCDB: %X- %X %X %X %X %X %X %X %X %X %X ", SCpnt->cmd_len, cdb[0], cdb[1], cdb[2], cdb[3], cdb[4], cdb[5], cdb[6], cdb[7], cdb[8], cdb[9]));
DEB (if(*cdb) printk ("\ntimeout_per_command: %d, timeout_total: %d, timeout: %d", SCpnt->timeout_per_command,
SCpnt->timeout_total, SCpnt->timeout));
outl (SCpnt->timeout_per_command, padapter->mb1);
outb_p (CMD_SCSI_TIMEOUT, padapter->cmd);
if ( WaitReady (padapter) )
{
rc = DID_ERROR;
goto finished;
}
outw_p (pun | (lun << 8), padapter->mb0);
outw_p (SCpnt->cmd_len << 8, padapter->mb0 + 2);
memcpy (pdev->cdb, cdb, MAX_COMMAND_SIZE);
outl (pdev->cdbDma, padapter->mb1);
if ( BuildSgList (SCpnt, padapter, pdev) )
cmd = CMD_SCSI_THRU;
else
cmd = CMD_SCSI_THRU_SG;
if ( (pdev->tag = Command (padapter, cmd)) == 0 )
rc = DID_TIME_OUT;
goto finished;
}
else
{
if ( lun )
{
rc = DID_BAD_TARGET;
goto finished;
}
}
switch ( *cdb )
{
case SCSIOP_INQUIRY: // inquiry CDB
if ( cdb[2] == SC_MY_RAID )
{
switch ( cdb[3] )
{
case MY_SCSI_REBUILD:
OpDone (SCpnt, PsiRaidCmd (padapter, CMD_RAID_REBUILD) << 16);
return 0;
case MY_SCSI_ALARMMUTE:
OpDone (SCpnt, PsiRaidCmd (padapter, CMD_RAID_MUTE) << 16);
return 0;
case MY_SCSI_DEMOFAIL:
OpDone (SCpnt, PsiRaidCmd (padapter, CMD_RAID_FAIL) << 16);
return 0;
default:
if ( SCpnt->use_sg )
{
rc = DID_ERROR;
goto finished;
}
else
{
SCpnt->SCp.have_data_in = pci_map_single (padapter->pdev, SCpnt->request_buffer, SCpnt->request_bufflen,
SCpnt->sc_data_direction);
outl (SCpnt->SCp.have_data_in, padapter->mb2);
}
outl (cdb[5], padapter->mb0);
outl (cdb[3], padapter->mb3);
cmd = CMD_DASD_RAID_RQ;
break;
}
break;
}
if ( SCpnt->use_sg )
{
SCpnt->SCp.have_data_in = pci_map_single (padapter->pdev,
((struct scatterlist *)SCpnt->request_buffer)->address,
SCpnt->request_bufflen,
SCpnt->sc_data_direction);
}
else
{
SCpnt->SCp.have_data_in = pci_map_single (padapter->pdev, SCpnt->request_buffer,
SCpnt->request_bufflen,
SCpnt->sc_data_direction);
}
outl (SCpnt->SCp.have_data_in, padapter->mb2);
outl (SCpnt->request_bufflen, padapter->mb3);
cmd = CMD_DASD_SCSI_INQ;
break;
case SCSIOP_TEST_UNIT_READY: // test unit ready CDB
SCpnt->SCp.have_data_in = pci_map_single (padapter->pdev, SCpnt->sense_buffer, sizeof (SCpnt->sense_buffer), PCI_DMA_FROMDEVICE);
outl (SCpnt->SCp.have_data_in, padapter->mb2);
outl (sizeof (SCpnt->sense_buffer), padapter->mb3);
cmd = CMD_TEST_READY;
break;
case SCSIOP_READ_CAPACITY: // read capacity CDB
if ( SCpnt->use_sg )
{
SCpnt->SCp.have_data_in = pci_map_single (padapter->pdev, ((struct scatterlist *)(SCpnt->request_buffer))->address,
8, PCI_DMA_FROMDEVICE);
}
else
SCpnt->SCp.have_data_in = pci_map_single (padapter->pdev, SCpnt->request_buffer, 8, PCI_DMA_FROMDEVICE);
outl (SCpnt->SCp.have_data_in, padapter->mb2);
outl (8, padapter->mb3);
cmd = CMD_DASD_CAP;
break;
case SCSIOP_VERIFY: // verify CDB
outw_p ((USHORT)cdb[8] | ((USHORT)cdb[7] << 8), padapter->mb0 + 2);
outl (XSCSI2LONG (&cdb[2]), padapter->mb1);
cmd = CMD_READ_SG;
break;
case SCSIOP_READ: // read10 CDB
outw_p ((USHORT)cdb[8] | ((USHORT)cdb[7] << 8), padapter->mb0 + 2);
outl (XSCSI2LONG (&cdb[2]), padapter->mb1);
if ( BuildSgList (SCpnt, padapter, pdev) )
cmd = CMD_READ;
else
cmd = CMD_READ_SG;
break;
case SCSIOP_READ6: // read6 CDB
outw_p (cdb[4], padapter->mb0 + 2);
outl ((SCSI2LONG (&cdb[1])) & 0x001FFFFF, padapter->mb1);
if ( BuildSgList (SCpnt, padapter, pdev) )
cmd = CMD_READ;
else
cmd = CMD_READ_SG;
break;
case SCSIOP_WRITE: // write10 CDB
outw_p ((USHORT)cdb[8] | ((USHORT)cdb[7] << 8), padapter->mb0 + 2);
outl (XSCSI2LONG (&cdb[2]), padapter->mb1);
if ( BuildSgList (SCpnt, padapter, pdev) )
cmd = CMD_WRITE;
else
cmd = CMD_WRITE_SG;
break;
case SCSIOP_WRITE6: // write6 CDB
outw_p (cdb[4], padapter->mb0 + 2);
outl ((SCSI2LONG (&cdb[1])) & 0x001FFFFF, padapter->mb1);
if ( BuildSgList (SCpnt, padapter, pdev) )
cmd = CMD_WRITE;
else
cmd = CMD_WRITE_SG;
break;
case SCSIOP_START_STOP_UNIT:
cmd = CMD_EJECT_MEDIA;
break;
case SCSIOP_MEDIUM_REMOVAL:
switch ( cdb[4] )
{
case 0:
cmd = CMD_UNLOCK_DOOR;
break;
case 1:
cmd = CMD_LOCK_DOOR;
break;
default:
cmd = 0;
break;
}
if ( cmd )
break;
default:
DEB (printk ("pci2000_queuecommand: Unsupported command %02X\n", *cdb));
OpDone (SCpnt, DID_ERROR << 16);
return 0;
}
if ( (pdev->tag = Command (padapter, cmd)) == 0 )
rc = DID_TIME_OUT;
finished:;
if ( rc != -1 )
OpDone (SCpnt, rc << 16);
return 0;
}
/****************************************************************
* Name: Pci2000_Detect
*
* Description: Detect and initialize our boards.
*
* Parameters: tpnt - Pointer to SCSI host template structure.
*
* Returns: Number of adapters installed.
*
****************************************************************/
int Pci2000_Detect (Scsi_Host_Template *tpnt)
{
int found = 0;
int installed = 0;
struct Scsi_Host *pshost;
PADAPTER2000 padapter;
int z, zz;
int setirq;
struct pci_dev *pdev = NULL;
UCHAR *consistent;
dma_addr_t consistentDma;
while ( (pdev = pci_find_device (VENDOR_PSI, DEVICE_ROY_1, pdev)) != NULL )
{
if (pci_enable_device(pdev))
continue;
pshost = scsi_register (tpnt, sizeof(ADAPTER2000));
if(pshost == NULL)
continue;
padapter = HOSTDATA(pshost);
padapter->basePort = pci_resource_start (pdev, 1);
DEB (printk ("\nBase Regs = %#04X", padapter->basePort)); // get the base I/O port address
padapter->mb0 = padapter->basePort + RTR_MAILBOX; // get the 32 bit mail boxes
padapter->mb1 = padapter->basePort + RTR_MAILBOX + 4;
padapter->mb2 = padapter->basePort + RTR_MAILBOX + 8;
padapter->mb3 = padapter->basePort + RTR_MAILBOX + 12;
padapter->mb4 = padapter->basePort + RTR_MAILBOX + 16;
padapter->cmd = padapter->basePort + RTR_LOCAL_DOORBELL; // command register
padapter->tag = padapter->basePort + RTR_PCI_DOORBELL; // tag/response register
padapter->pdev = pdev;
if ( WaitReady (padapter) )
goto unregister;
outb_p (0x84, padapter->mb0);
outb_p (CMD_SPECIFY, padapter->cmd);
if ( WaitReady (padapter) )
goto unregister;
consistent = pci_alloc_consistent (pdev, consistentLen, &consistentDma);
if ( !consistent )
{
printk ("Unable to allocate DMA memory for PCI-2000 controller.\n");
goto unregister;
}
scsi_set_device(pshost, &pdev->dev);
pshost->irq = pdev->irq;
setirq = 1;
padapter->irqOwned = 0;
for ( z = 0; z < installed; z++ ) // scan for shared interrupts
{
if ( PsiHost[z]->irq == pshost->irq ) // if shared then, don't posses
setirq = 0;
}
if ( setirq ) // if not shared, posses
{
if ( request_irq (pshost->irq, Irq_Handler, SA_SHIRQ, "pci2000", padapter) < 0 )
{
if ( request_irq (pshost->irq, Irq_Handler, SA_INTERRUPT | SA_SHIRQ, "pci2000", padapter) < 0 )
{
printk ("Unable to allocate IRQ for PCI-2000 controller.\n");
pci_free_consistent (pdev, consistentLen, consistent, consistentDma);
goto unregister;
}
}
padapter->irqOwned = pshost->irq; // set IRQ as owned
}
PsiHost[installed] = pshost; // save SCSI_HOST pointer
pshost->io_port = padapter->basePort;
pshost->n_io_port = 0xFF;
pshost->unique_id = padapter->basePort;
pshost->max_id = 16;
pshost->max_channel = 1;
for ( zz = 0; zz < MAX_BUS; zz++ )
for ( z = 0; z < MAX_UNITS; z++ )
{
padapter->dev[zz][z].tag = 0;
padapter->dev[zz][z].scatGath = (PSCATGATH)consistent;
padapter->dev[zz][z].scatGathDma = consistentDma;
consistent += 16 * sizeof (SCATGATH);
consistentDma += 16 * sizeof (SCATGATH);
padapter->dev[zz][z].cdb = (UCHAR *)consistent;
padapter->dev[zz][z].cdbDma = consistentDma;
consistent += MAX_COMMAND_SIZE;
consistentDma += MAX_COMMAND_SIZE;
}
printk("\nPSI-2000 Intelligent Storage SCSI CONTROLLER: at I/O = %lX IRQ = %d\n", padapter->basePort, pshost->irq);
printk("Version %s, Compiled %s %s\n\n", PCI2000_VERSION, __DATE__, __TIME__);
found++;
if ( ++installed < MAXADAPTER )
continue;
break;
unregister:;
scsi_unregister (pshost);
found++;
}
NumAdapters = installed;
return installed;
}
/****************************************************************
* Name: Pci2000_Abort
*
* Description: Process the Abort command from the SCSI manager.
*
* Parameters: SCpnt - Pointer to SCSI command structure.
*
* Returns: Allways snooze.
*
****************************************************************/
int Pci2000_Abort (Scsi_Cmnd *SCpnt)
{
DEB (printk ("pci2000_abort\n"));
return SCSI_ABORT_SNOOZE;
}
/****************************************************************
* Name: Pci2000_Reset
*
* Description: Process the Reset command from the SCSI manager.
*
* Parameters: SCpnt - Pointer to SCSI command structure.
* flags - Flags about the reset command
*
* Returns: No active command at this time, so this means
* that each time we got some kind of response the
* last time through. Tell the mid-level code to
* request sense information in order to decide what
* to do next.
*
****************************************************************/
int Pci2000_Reset (Scsi_Cmnd *SCpnt, unsigned int reset_flags)
{
return SCSI_RESET_PUNT;
}
/****************************************************************
* Name: Pci2000_Release
*
* Description: Release resources allocated for a single each adapter.
*
* Parameters: pshost - Pointer to SCSI command structure.
*
* Returns: zero.
*
****************************************************************/
int Pci2000_Release (struct Scsi_Host *pshost)
{
PADAPTER2000 padapter = HOSTDATA (pshost);
if ( padapter->irqOwned )
free_irq (pshost->irq, padapter);
pci_free_consistent (padapter->pdev, consistentLen, padapter->dev[0][0].scatGath, padapter->dev[0][0].scatGathDma);
release_region (pshost->io_port, pshost->n_io_port);
scsi_unregister(pshost);
return 0;
}
/****************************************************************
* Name: Pci2000_BiosParam
*
* Description: Process the biosparam request from the SCSI manager to
* return C/H/S data.
*
* Parameters: disk - Pointer to SCSI disk structure.
* dev - Major/minor number from kernel.
* geom - Pointer to integer array to place geometry data.
*
* Returns: zero.
*
****************************************************************/
int Pci2000_BiosParam (struct scsi_device *sdev, struct block_device *dev,
sector_t capacity, int geom[])
{
PADAPTER2000 padapter;
padapter = HOSTDATA(sdev->host);
if ( WaitReady (padapter) )
return 0;
outb_p (sdev->id, padapter->mb0);
outb_p (CMD_GET_PARMS, padapter->cmd);
if ( WaitReady (padapter) )
return 0;
geom[0] = inb_p (padapter->mb2 + 3);
geom[1] = inb_p (padapter->mb2 + 2);
geom[2] = inw_p (padapter->mb2);
return 0;
}
MODULE_LICENSE("Dual BSD/GPL");
static Scsi_Host_Template driver_template = {
.proc_name = "pci2000",
.name = "PCI-2000 SCSI Intelligent Disk Controller",
.detect = Pci2000_Detect,
.release = Pci2000_Release,
.queuecommand = Pci2000_QueueCommand,
.abort = Pci2000_Abort,
.reset = Pci2000_Reset,
.bios_param = Pci2000_BiosParam,
.can_queue = 16,
.this_id = -1,
.sg_tablesize = 16,
.cmd_per_lun = 1,
.use_clustering = DISABLE_CLUSTERING,
};
#include "scsi_module.c"
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