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path: root/drivers/scsi/psi240i.c
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Diffstat (limited to 'drivers/scsi/psi240i.c')
-rw-r--r--drivers/scsi/psi240i.c685
1 files changed, 685 insertions, 0 deletions
diff --git a/drivers/scsi/psi240i.c b/drivers/scsi/psi240i.c
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index 000000000000..0f576d4ad0dd
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+++ b/drivers/scsi/psi240i.c
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+/*+M*************************************************************************
+ * Perceptive Solutions, Inc. PSI-240I device driver proc support for Linux.
+ *
+ * Copyright (c) 1997 Perceptive Solutions, Inc.
+ *
+ * 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.
+ *
+ *
+ * File Name: psi240i.c
+ *
+ * Description: SCSI driver for the PSI240I EIDE interface card.
+ *
+ *-M*************************************************************************/
+
+#include <linux/module.h>
+
+#include <linux/blkdev.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/string.h>
+#include <linux/ioport.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/proc_fs.h>
+#include <linux/spinlock.h>
+#include <linux/stat.h>
+
+#include <asm/dma.h>
+#include <asm/system.h>
+#include <asm/io.h>
+#include "scsi.h"
+#include <scsi/scsi_host.h>
+
+#include "psi240i.h"
+#include "psi_chip.h"
+
+//#define DEBUG 1
+
+#ifdef DEBUG
+#define DEB(x) x
+#else
+#define DEB(x)
+#endif
+
+#define MAXBOARDS 6 /* Increase this and the sizes of the arrays below, if you need more. */
+
+#define PORT_DATA 0
+#define PORT_ERROR 1
+#define PORT_SECTOR_COUNT 2
+#define PORT_LBA_0 3
+#define PORT_LBA_8 4
+#define PORT_LBA_16 5
+#define PORT_LBA_24 6
+#define PORT_STAT_CMD 7
+#define PORT_SEL_FAIL 8
+#define PORT_IRQ_STATUS 9
+#define PORT_ADDRESS 10
+#define PORT_FAIL 11
+#define PORT_ALT_STAT 12
+
+typedef struct
+ {
+ UCHAR device; // device code
+ UCHAR byte6; // device select register image
+ UCHAR spigot; // spigot number
+ UCHAR expectingIRQ; // flag for expecting and interrupt
+ USHORT sectors; // number of sectors per track
+ USHORT heads; // number of heads
+ USHORT cylinders; // number of cylinders for this device
+ USHORT spareword; // placeholder
+ ULONG blocks; // number of blocks on device
+ } OUR_DEVICE, *POUR_DEVICE;
+
+typedef struct
+ {
+ USHORT ports[13];
+ OUR_DEVICE device[8];
+ Scsi_Cmnd *pSCmnd;
+ IDE_STRUCT ide;
+ ULONG startSector;
+ USHORT sectorCount;
+ Scsi_Cmnd *SCpnt;
+ VOID *buffer;
+ USHORT expectingIRQ;
+ } ADAPTER240I, *PADAPTER240I;
+
+#define HOSTDATA(host) ((PADAPTER240I)&host->hostdata)
+
+static struct Scsi_Host *PsiHost[6] = {NULL,}; /* One for each IRQ level (10-15) */
+static IDENTIFY_DATA identifyData;
+static SETUP ChipSetup;
+
+static USHORT portAddr[6] = {CHIP_ADRS_0, CHIP_ADRS_1, CHIP_ADRS_2, CHIP_ADRS_3, CHIP_ADRS_4, CHIP_ADRS_5};
+
+/****************************************************************
+ * Name: WriteData :LOCAL
+ *
+ * Description: Write data to device.
+ *
+ * Parameters: padapter - Pointer adapter data structure.
+ *
+ * Returns: TRUE if drive does not assert DRQ in time.
+ *
+ ****************************************************************/
+static int WriteData (PADAPTER240I padapter)
+ {
+ ULONG timer;
+ USHORT *pports = padapter->ports;
+
+ timer = jiffies + TIMEOUT_DRQ; // calculate the timeout value
+ do {
+ if ( inb_p (pports[PORT_STAT_CMD]) & IDE_STATUS_DRQ )
+ {
+ outsw (pports[PORT_DATA], padapter->buffer, (USHORT)padapter->ide.ide.ide[2] * 256);
+ return 0;
+ }
+ } while ( time_after(timer, jiffies) ); // test for timeout
+
+ padapter->ide.ide.ides.cmd = 0; // null out the command byte
+ return 1;
+ }
+/****************************************************************
+ * Name: IdeCmd :LOCAL
+ *
+ * Description: Process a queued command from the SCSI manager.
+ *
+ * Parameters: padapter - Pointer adapter data structure.
+ *
+ * Returns: Zero if no error or status register contents on error.
+ *
+ ****************************************************************/
+static UCHAR IdeCmd (PADAPTER240I padapter)
+ {
+ ULONG timer;
+ USHORT *pports = padapter->ports;
+ UCHAR status;
+
+ outb_p (padapter->ide.ide.ides.spigot, pports[PORT_SEL_FAIL]); // select the spigot
+ outb_p (padapter->ide.ide.ide[6], pports[PORT_LBA_24]); // select the drive
+ timer = jiffies + TIMEOUT_READY; // calculate the timeout value
+ do {
+ status = inb_p (padapter->ports[PORT_STAT_CMD]);
+ if ( status & IDE_STATUS_DRDY )
+ {
+ outb_p (padapter->ide.ide.ide[2], pports[PORT_SECTOR_COUNT]);
+ outb_p (padapter->ide.ide.ide[3], pports[PORT_LBA_0]);
+ outb_p (padapter->ide.ide.ide[4], pports[PORT_LBA_8]);
+ outb_p (padapter->ide.ide.ide[5], pports[PORT_LBA_16]);
+ padapter->expectingIRQ = 1;
+ outb_p (padapter->ide.ide.ide[7], pports[PORT_STAT_CMD]);
+
+ if ( padapter->ide.ide.ides.cmd == IDE_CMD_WRITE_MULTIPLE )
+ return (WriteData (padapter));
+
+ return 0;
+ }
+ } while ( time_after(timer, jiffies) ); // test for timeout
+
+ padapter->ide.ide.ides.cmd = 0; // null out the command byte
+ return status;
+ }
+/****************************************************************
+ * Name: SetupTransfer :LOCAL
+ *
+ * Description: Setup a data transfer command.
+ *
+ * Parameters: padapter - Pointer adapter data structure.
+ * drive - Drive/head register upper nibble only.
+ *
+ * Returns: TRUE if no data to transfer.
+ *
+ ****************************************************************/
+static int SetupTransfer (PADAPTER240I padapter, UCHAR drive)
+ {
+ if ( padapter->sectorCount )
+ {
+ *(ULONG *)padapter->ide.ide.ides.lba = padapter->startSector;
+ padapter->ide.ide.ide[6] |= drive;
+ padapter->ide.ide.ides.sectors = ( padapter->sectorCount > SECTORSXFER ) ? SECTORSXFER : padapter->sectorCount;
+ padapter->sectorCount -= padapter->ide.ide.ides.sectors; // bump the start and count for next xfer
+ padapter->startSector += padapter->ide.ide.ides.sectors;
+ return 0;
+ }
+ else
+ {
+ padapter->ide.ide.ides.cmd = 0; // null out the command byte
+ padapter->SCpnt = NULL;
+ return 1;
+ }
+ }
+/****************************************************************
+ * Name: DecodeError :LOCAL
+ *
+ * Description: Decode and process device errors.
+ *
+ * Parameters: pshost - Pointer to host data block.
+ * status - Status register code.
+ *
+ * Returns: The driver status code.
+ *
+ ****************************************************************/
+static ULONG DecodeError (struct Scsi_Host *pshost, UCHAR status)
+ {
+ PADAPTER240I padapter = HOSTDATA(pshost);
+ UCHAR error;
+
+ padapter->expectingIRQ = 0;
+ padapter->SCpnt = NULL;
+ if ( status & IDE_STATUS_WRITE_FAULT )
+ {
+ return DID_PARITY << 16;
+ }
+ if ( status & IDE_STATUS_BUSY )
+ return DID_BUS_BUSY << 16;
+
+ error = inb_p (padapter->ports[PORT_ERROR]);
+ DEB(printk ("\npsi240i error register: %x", error));
+ switch ( error )
+ {
+ case IDE_ERROR_AMNF:
+ case IDE_ERROR_TKONF:
+ case IDE_ERROR_ABRT:
+ case IDE_ERROR_IDFN:
+ case IDE_ERROR_UNC:
+ case IDE_ERROR_BBK:
+ default:
+ return DID_ERROR << 16;
+ }
+ return DID_ERROR << 16;
+ }
+/****************************************************************
+ * 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 void Irq_Handler (int irq, void *dev_id, struct pt_regs *regs)
+ {
+ struct Scsi_Host *shost; // Pointer to host data block
+ PADAPTER240I padapter; // Pointer to adapter control structure
+ USHORT *pports; // I/O port array
+ Scsi_Cmnd *SCpnt;
+ UCHAR status;
+ int z;
+
+ DEB(printk ("\npsi240i received interrupt\n"));
+
+ shost = PsiHost[irq - 10];
+ if ( !shost )
+ panic ("Splunge!");
+
+ padapter = HOSTDATA(shost);
+ pports = padapter->ports;
+ SCpnt = padapter->SCpnt;
+
+ if ( !padapter->expectingIRQ )
+ {
+ DEB(printk ("\npsi240i Unsolicited interrupt\n"));
+ return;
+ }
+ padapter->expectingIRQ = 0;
+
+ status = inb_p (padapter->ports[PORT_STAT_CMD]); // read the device status
+ if ( status & (IDE_STATUS_ERROR | IDE_STATUS_WRITE_FAULT) )
+ goto irqerror;
+
+ DEB(printk ("\npsi240i processing interrupt"));
+ switch ( padapter->ide.ide.ides.cmd ) // decide how to handle the interrupt
+ {
+ case IDE_CMD_READ_MULTIPLE:
+ if ( status & IDE_STATUS_DRQ )
+ {
+ insw (pports[PORT_DATA], padapter->buffer, (USHORT)padapter->ide.ide.ides.sectors * 256);
+ padapter->buffer += padapter->ide.ide.ides.sectors * 512;
+ if ( SetupTransfer (padapter, padapter->ide.ide.ide[6] & 0xF0) )
+ {
+ SCpnt->result = DID_OK << 16;
+ padapter->SCpnt = NULL;
+ SCpnt->scsi_done (SCpnt);
+ return;
+ }
+ if ( !(status = IdeCmd (padapter)) )
+ return;
+ }
+ break;
+
+ case IDE_CMD_WRITE_MULTIPLE:
+ padapter->buffer += padapter->ide.ide.ides.sectors * 512;
+ if ( SetupTransfer (padapter, padapter->ide.ide.ide[6] & 0xF0) )
+ {
+ SCpnt->result = DID_OK << 16;
+ padapter->SCpnt = NULL;
+ SCpnt->scsi_done (SCpnt);
+ return;
+ }
+ if ( !(status = IdeCmd (padapter)) )
+ return;
+ break;
+
+ case IDE_COMMAND_IDENTIFY:
+ {
+ PINQUIRYDATA pinquiryData = SCpnt->request_buffer;
+
+ if ( status & IDE_STATUS_DRQ )
+ {
+ insw (pports[PORT_DATA], &identifyData, sizeof (identifyData) >> 1);
+
+ memset (pinquiryData, 0, SCpnt->request_bufflen); // Zero INQUIRY data structure.
+ pinquiryData->DeviceType = 0;
+ pinquiryData->Versions = 2;
+ pinquiryData->AdditionalLength = 35 - 4;
+
+ // Fill in vendor identification fields.
+ for ( z = 0; z < 20; z += 2 )
+ {
+ pinquiryData->VendorId[z] = ((UCHAR *)identifyData.ModelNumber)[z + 1];
+ pinquiryData->VendorId[z + 1] = ((UCHAR *)identifyData.ModelNumber)[z];
+ }
+
+ // Initialize unused portion of product id.
+ for ( z = 0; z < 4; z++ )
+ pinquiryData->ProductId[12 + z] = ' ';
+
+ // Move firmware revision from IDENTIFY data to
+ // product revision in INQUIRY data.
+ for ( z = 0; z < 4; z += 2 )
+ {
+ pinquiryData->ProductRevisionLevel[z] = ((UCHAR *)identifyData.FirmwareRevision)[z + 1];
+ pinquiryData->ProductRevisionLevel[z + 1] = ((UCHAR *)identifyData.FirmwareRevision)[z];
+ }
+
+ SCpnt->result = DID_OK << 16;
+ padapter->SCpnt = NULL;
+ SCpnt->scsi_done (SCpnt);
+ return;
+ }
+ break;
+ }
+
+ default:
+ SCpnt->result = DID_OK << 16;
+ padapter->SCpnt = NULL;
+ SCpnt->scsi_done (SCpnt);
+ return;
+ }
+
+irqerror:;
+ DEB(printk ("\npsi240i error Device Status: %X\n", status));
+ SCpnt->result = DecodeError (shost, status);
+ SCpnt->scsi_done (SCpnt);
+ }
+
+static irqreturn_t do_Irq_Handler (int irq, void *dev_id, struct pt_regs *regs)
+{
+ unsigned long flags;
+ struct Scsi_Host *dev = dev_id;
+
+ spin_lock_irqsave(dev->host_lock, flags);
+ Irq_Handler(irq, dev_id, regs);
+ spin_unlock_irqrestore(dev->host_lock, flags);
+ return IRQ_HANDLED;
+}
+
+/****************************************************************
+ * Name: Psi240i_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.
+ *
+ ****************************************************************/
+static int Psi240i_QueueCommand (Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *))
+ {
+ UCHAR *cdb = (UCHAR *)SCpnt->cmnd; // Pointer to SCSI CDB
+ PADAPTER240I padapter = HOSTDATA (SCpnt->device->host); // Pointer to adapter control structure
+ POUR_DEVICE pdev = &padapter->device [SCpnt->device->id];// Pointer to device information
+ UCHAR rc; // command return code
+
+ SCpnt->scsi_done = done;
+ padapter->ide.ide.ides.spigot = pdev->spigot;
+ padapter->buffer = SCpnt->request_buffer;
+ if (done)
+ {
+ if ( !pdev->device )
+ {
+ SCpnt->result = DID_BAD_TARGET << 16;
+ done (SCpnt);
+ return 0;
+ }
+ }
+ else
+ {
+ printk("psi240i_queuecommand: %02X: done can't be NULL\n", *cdb);
+ return 0;
+ }
+
+ switch ( *cdb )
+ {
+ case SCSIOP_INQUIRY: // inquiry CDB
+ {
+ padapter->ide.ide.ide[6] = pdev->byte6;
+ padapter->ide.ide.ides.cmd = IDE_COMMAND_IDENTIFY;
+ break;
+ }
+
+ case SCSIOP_TEST_UNIT_READY: // test unit ready CDB
+ SCpnt->result = DID_OK << 16;
+ done (SCpnt);
+ return 0;
+
+ case SCSIOP_READ_CAPACITY: // read capctiy CDB
+ {
+ PREAD_CAPACITY_DATA pdata = (PREAD_CAPACITY_DATA)SCpnt->request_buffer;
+
+ pdata->blksiz = 0x20000;
+ XANY2SCSI ((UCHAR *)&pdata->blks, pdev->blocks);
+ SCpnt->result = DID_OK << 16;
+ done (SCpnt);
+ return 0;
+ }
+
+ case SCSIOP_VERIFY: // verify CDB
+ *(ULONG *)padapter->ide.ide.ides.lba = XSCSI2LONG (&cdb[2]);
+ padapter->ide.ide.ide[6] |= pdev->byte6;
+ padapter->ide.ide.ide[2] = (UCHAR)((USHORT)cdb[8] | ((USHORT)cdb[7] << 8));
+ padapter->ide.ide.ides.cmd = IDE_COMMAND_VERIFY;
+ break;
+
+ case SCSIOP_READ: // read10 CDB
+ padapter->startSector = XSCSI2LONG (&cdb[2]);
+ padapter->sectorCount = (USHORT)cdb[8] | ((USHORT)cdb[7] << 8);
+ SetupTransfer (padapter, pdev->byte6);
+ padapter->ide.ide.ides.cmd = IDE_CMD_READ_MULTIPLE;
+ break;
+
+ case SCSIOP_READ6: // read6 CDB
+ padapter->startSector = SCSI2LONG (&cdb[1]);
+ padapter->sectorCount = cdb[4];
+ SetupTransfer (padapter, pdev->byte6);
+ padapter->ide.ide.ides.cmd = IDE_CMD_READ_MULTIPLE;
+ break;
+
+ case SCSIOP_WRITE: // write10 CDB
+ padapter->startSector = XSCSI2LONG (&cdb[2]);
+ padapter->sectorCount = (USHORT)cdb[8] | ((USHORT)cdb[7] << 8);
+ SetupTransfer (padapter, pdev->byte6);
+ padapter->ide.ide.ides.cmd = IDE_CMD_WRITE_MULTIPLE;
+ break;
+ case SCSIOP_WRITE6: // write6 CDB
+ padapter->startSector = SCSI2LONG (&cdb[1]);
+ padapter->sectorCount = cdb[4];
+ SetupTransfer (padapter, pdev->byte6);
+ padapter->ide.ide.ides.cmd = IDE_CMD_WRITE_MULTIPLE;
+ break;
+
+ default:
+ DEB (printk ("psi240i_queuecommand: Unsupported command %02X\n", *cdb));
+ SCpnt->result = DID_ERROR << 16;
+ done (SCpnt);
+ return 0;
+ }
+
+ padapter->SCpnt = SCpnt; // Save this command data
+
+ rc = IdeCmd (padapter);
+ if ( rc )
+ {
+ padapter->expectingIRQ = 0;
+ DEB (printk ("psi240i_queuecommand: %02X, %02X: Device failed to respond for command\n", *cdb, padapter->ide.ide.ides.cmd));
+ SCpnt->result = DID_ERROR << 16;
+ done (SCpnt);
+ return 0;
+ }
+ DEB (printk("psi240i_queuecommand: %02X, %02X now waiting for interrupt ", *cdb, padapter->ide.ide.ides.cmd));
+ return 0;
+ }
+
+/***************************************************************************
+ * Name: ReadChipMemory
+ *
+ * Description: Read information from controller memory.
+ *
+ * Parameters: psetup - Pointer to memory image of setup information.
+ * base - base address of memory.
+ * length - lenght of data space in bytes.
+ * port - I/O address of data port.
+ *
+ * Returns: Nothing.
+ *
+ **************************************************************************/
+static void ReadChipMemory (void *pdata, USHORT base, USHORT length, USHORT port)
+ {
+ USHORT z, zz;
+ UCHAR *pd = (UCHAR *)pdata;
+ outb_p (SEL_NONE, port + REG_SEL_FAIL); // setup data port
+ zz = 0;
+ while ( zz < length )
+ {
+ outw_p (base, port + REG_ADDRESS); // setup address
+
+ for ( z = 0; z < 8; z++ )
+ {
+ if ( (zz + z) < length )
+ *pd++ = inb_p (port + z); // read data byte
+ }
+ zz += 8;
+ base += 8;
+ }
+ }
+/****************************************************************
+ * Name: Psi240i_Detect
+ *
+ * Description: Detect and initialize our boards.
+ *
+ * Parameters: tpnt - Pointer to SCSI host template structure.
+ *
+ * Returns: Number of adapters found.
+ *
+ ****************************************************************/
+static int Psi240i_Detect (Scsi_Host_Template *tpnt)
+ {
+ int board;
+ int count = 0;
+ int unit;
+ int z;
+ USHORT port, port_range = 16;
+ CHIP_CONFIG_N chipConfig;
+ CHIP_DEVICE_N chipDevice[8];
+ struct Scsi_Host *pshost;
+
+ for ( board = 0; board < MAXBOARDS; board++ ) // scan for I/O ports
+ {
+ pshost = NULL;
+ port = portAddr[board]; // get base address to test
+ if ( !request_region (port, port_range, "psi240i") )
+ continue;
+ if ( inb_p (port + REG_FAIL) != CHIP_ID ) // do the first test for likley hood that it is us
+ goto host_init_failure;
+ outb_p (SEL_NONE, port + REG_SEL_FAIL); // setup EEPROM/RAM access
+ outw (0, port + REG_ADDRESS); // setup EEPROM address zero
+ if ( inb_p (port) != 0x55 ) // test 1st byte
+ goto host_init_failure; // nope
+ if ( inb_p (port + 1) != 0xAA ) // test 2nd byte
+ goto host_init_failure; // nope
+
+ // at this point our board is found and can be accessed. Now we need to initialize
+ // our informatation and register with the kernel.
+
+
+ ReadChipMemory (&chipConfig, CHIP_CONFIG, sizeof (chipConfig), port);
+ ReadChipMemory (&chipDevice, CHIP_DEVICE, sizeof (chipDevice), port);
+ ReadChipMemory (&ChipSetup, CHIP_EEPROM_DATA, sizeof (ChipSetup), port);
+
+ if ( !chipConfig.numDrives ) // if no devices on this board
+ goto host_init_failure;
+
+ pshost = scsi_register (tpnt, sizeof(ADAPTER240I));
+ if(pshost == NULL)
+ goto host_init_failure;
+
+ PsiHost[chipConfig.irq - 10] = pshost;
+ pshost->unique_id = port;
+ pshost->io_port = port;
+ pshost->n_io_port = 16; /* Number of bytes of I/O space used */
+ pshost->irq = chipConfig.irq;
+
+ for ( z = 0; z < 11; z++ ) // build regester address array
+ HOSTDATA(pshost)->ports[z] = port + z;
+ HOSTDATA(pshost)->ports[11] = port + REG_FAIL;
+ HOSTDATA(pshost)->ports[12] = port + REG_ALT_STAT;
+ DEB (printk ("\nPorts ="));
+ DEB (for (z=0;z<13;z++) printk(" %#04X",HOSTDATA(pshost)->ports[z]););
+
+ for ( z = 0; z < chipConfig.numDrives; ++z )
+ {
+ unit = chipDevice[z].channel & 0x0F;
+ HOSTDATA(pshost)->device[unit].device = ChipSetup.setupDevice[unit].device;
+ HOSTDATA(pshost)->device[unit].byte6 = (UCHAR)(((unit & 1) << 4) | 0xE0);
+ HOSTDATA(pshost)->device[unit].spigot = (UCHAR)(1 << (unit >> 1));
+ HOSTDATA(pshost)->device[unit].sectors = ChipSetup.setupDevice[unit].sectors;
+ HOSTDATA(pshost)->device[unit].heads = ChipSetup.setupDevice[unit].heads;
+ HOSTDATA(pshost)->device[unit].cylinders = ChipSetup.setupDevice[unit].cylinders;
+ HOSTDATA(pshost)->device[unit].blocks = ChipSetup.setupDevice[unit].blocks;
+ DEB (printk ("\nHOSTDATA->device = %X", HOSTDATA(pshost)->device[unit].device));
+ DEB (printk ("\n byte6 = %X", HOSTDATA(pshost)->device[unit].byte6));
+ DEB (printk ("\n spigot = %X", HOSTDATA(pshost)->device[unit].spigot));
+ DEB (printk ("\n sectors = %X", HOSTDATA(pshost)->device[unit].sectors));
+ DEB (printk ("\n heads = %X", HOSTDATA(pshost)->device[unit].heads));
+ DEB (printk ("\n cylinders = %X", HOSTDATA(pshost)->device[unit].cylinders));
+ DEB (printk ("\n blocks = %lX", HOSTDATA(pshost)->device[unit].blocks));
+ }
+
+ if ( request_irq (chipConfig.irq, do_Irq_Handler, 0, "psi240i", pshost) == 0 )
+ {
+ printk("\nPSI-240I EIDE CONTROLLER: at I/O = %x IRQ = %d\n", port, chipConfig.irq);
+ printk("(C) 1997 Perceptive Solutions, Inc. All rights reserved\n\n");
+ count++;
+ continue;
+ }
+
+ printk ("Unable to allocate IRQ for PSI-240I controller.\n");
+
+host_init_failure:
+
+ release_region (port, port_range);
+ if (pshost)
+ scsi_unregister (pshost);
+
+ }
+ return count;
+ }
+
+static int Psi240i_Release(struct Scsi_Host *shost)
+{
+ if (shost->irq)
+ free_irq(shost->irq, NULL);
+ if (shost->io_port && shost->n_io_port)
+ release_region(shost->io_port, shost->n_io_port);
+ scsi_unregister(shost);
+ return 0;
+}
+
+/****************************************************************
+ * Name: Psi240i_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.
+ *
+ ****************************************************************/
+static int Psi240i_BiosParam (struct scsi_device *sdev, struct block_device *dev,
+ sector_t capacity, int geom[])
+ {
+ POUR_DEVICE pdev;
+
+ pdev = &(HOSTDATA(sdev->host)->device[sdev->id]);
+
+ geom[0] = pdev->heads;
+ geom[1] = pdev->sectors;
+ geom[2] = pdev->cylinders;
+ return 0;
+ }
+
+MODULE_LICENSE("GPL");
+
+static Scsi_Host_Template driver_template = {
+ .proc_name = "psi240i",
+ .name = "PSI-240I EIDE Disk Controller",
+ .detect = Psi240i_Detect,
+ .release = Psi240i_Release,
+ .queuecommand = Psi240i_QueueCommand,
+ .bios_param = Psi240i_BiosParam,
+ .can_queue = 1,
+ .this_id = -1,
+ .sg_tablesize = SG_NONE,
+ .cmd_per_lun = 1,
+ .use_clustering = DISABLE_CLUSTERING,
+};
+#include "scsi_module.c"
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-28 15:32:53 +0300