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path: root/drivers/scsi/pci2000.c
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-rw-r--r--drivers/scsi/pci2000.c834
1 files changed, 834 insertions, 0 deletions
diff --git a/drivers/scsi/pci2000.c b/drivers/scsi/pci2000.c
new file mode 100644
index 000000000000..60ce1cce9497
--- /dev/null
+++ b/drivers/scsi/pci2000.c
@@ -0,0 +1,834 @@
+/****************************************************************************
+ * 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, scsi_to_pci_dma_dir (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, scsi_to_pci_dma_dir (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, scsi_to_pci_dma_dir(SCpnt->sc_data_direction));
+ else
+ {
+ if ( SCpnt->use_sg )
+ pci_unmap_sg (padapter->pdev, (struct scatterlist *)SCpnt->request_buffer, SCpnt->use_sg, scsi_to_pci_dma_dir(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, internal_timout: %d", SCpnt->timeout_per_command,
+ SCpnt->timeout_total, SCpnt->timeout, SCpnt->internal_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,
+ scsi_to_pci_dma_dir(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,
+ scsi_to_pci_dma_dir (SCpnt->sc_data_direction));
+ }
+ else
+ {
+ SCpnt->SCp.have_data_in = pci_map_single (padapter->pdev, SCpnt->request_buffer,
+ SCpnt->request_bufflen,
+ scsi_to_pci_dma_dir (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"
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-14 23:30:23 +0000