URL
https://opencores.org/ocsvn/or1k/or1k/trunk
Subversion Repositories or1k
[/] [or1k/] [tags/] [before_ORP/] [uclinux/] [uClinux-2.0.x/] [drivers/] [scsi/] [pci2220i.c] - Rev 1765
Compare with Previous | Blame | View Log
/*+M************************************************************************* * Perceptive Solutions, Inc. PCI-2000 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: pci2220i.c * * Description: SCSI driver for the PCI2220I EIDE interface card. * *-M*************************************************************************/ #include <linux/module.h> #include <linux/kernel.h> #include <linux/head.h> #include <linux/types.h> #include <linux/string.h> #include <linux/bios32.h> #include <linux/pci.h> #include <linux/ioport.h> #include <linux/delay.h> #include <linux/sched.h> #include <linux/proc_fs.h> #include <asm/dma.h> #include <asm/system.h> #include <asm/io.h> #include <linux/blk.h> #include "scsi.h" #include "hosts.h" #include "pci2220i.h" #include "psi_dale.h" #include<linux/stat.h> struct proc_dir_entry Proc_Scsi_Pci2220i = { PROC_SCSI_PCI2220I, 7, "pci2220i", S_IFDIR | S_IRUGO | S_IXUGO, 2 }; //#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 #define MAXADAPTER 4 /* Increase this and the sizes of the arrays below, if you need more. */ #define MAX_BUS_MASTER_BLOCKS 1 // This is the maximum we can bus master for (1024 bytes) #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_STAT_SEL 8 #define PORT_FAIL 9 #define PORT_ALT_STAT 10 typedef struct { UCHAR device; // device code UCHAR byte6; // device select register image UCHAR spigot; // spigot number UCHAR sparebyte; // placeholder 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[12]; USHORT regDmaDesc; // address of the DMA discriptor register for direction of transfer USHORT regDmaCmdStat; // Byte #1 of DMA command status register USHORT regDmaAddrPci; // 32 bit register for PCI address of DMA USHORT regDmaAddrLoc; // 32 bit register for local bus address of DMA USHORT regDmaCount; // 32 bit register for DMA transfer count USHORT regDmaMode; // 32 bit register for DMA mode control USHORT regRemap; // 32 bit local space remap USHORT regDesc; // 32 bit local region descriptor USHORT regRange; // 32 bit local range USHORT regIrqControl; // 16 bit Interrupt enable/disable and status USHORT regScratchPad; // scratch pad I/O base address USHORT regBase; // Base I/O register for data space USHORT basePort; // PLX base I/O port USHORT timingMode; // timing mode currently set for adapter ULONG timingAddress; // address to use on adapter for current timing mode OUR_DEVICE device[4]; IDE_STRUCT ide; ULONG startSector; USHORT sectorCount; Scsi_Cmnd *SCpnt; VOID *buffer; USHORT expectingIRQ; USHORT readPhase; } ADAPTER2220I, *PADAPTER2220I; #define HOSTDATA(host) ((PADAPTER2220I)&host->hostdata) static struct Scsi_Host *PsiHost[MAXADAPTER] = {NULL,}; // One for each adapter static int NumAdapters = 0; static IDENTIFY_DATA identifyData; static SETUP DaleSetup; /**************************************************************** * 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 (PADAPTER2220I 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 ) { outb_p (0, padapter->regDmaDesc); // write operation outl (padapter->timingAddress, padapter->regDmaAddrLoc); outl (virt_to_bus (padapter->buffer), padapter->regDmaAddrPci); outl ((ULONG)padapter->ide.ide.ide[2] * (ULONG)512, padapter->regDmaCount); outb_p (1, padapter->regDmaMode); // interrupts off outb_p (0x03, padapter->regDmaCmdStat); // kick the DMA engine in gear return 0; } } while ( 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 (PADAPTER2220I padapter) { ULONG timer; USHORT *pports = padapter->ports; UCHAR status; outb_p (padapter->ide.ide.ides.spigot, pports[PORT_STAT_SEL]); // 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 DEB(printk ("\npci2220i Issueing new command: 0x%X",padapter->ide.ide.ides.cmd)); 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 ( 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 (PADAPTER2220I 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->ide.ide.ides.sectors = ( padapter->sectorCount > MAX_BUS_MASTER_BLOCKS ) ? MAX_BUS_MASTER_BLOCKS : 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) { PADAPTER2220I 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 ("\npci2220i 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 = NULL; // Pointer to host data block PADAPTER2220I padapter; // Pointer to adapter control structure USHORT *pports; // I/O port array Scsi_Cmnd *SCpnt; UCHAR status; int z; // DEB(printk ("\npci2220i recieved interrupt\n")); for ( z = 0; z < NumAdapters; z++ ) // scan for interrupt to process { if ( PsiHost[z]->irq == (UCHAR)(irq & 0xFF) ) { if ( inw_p (HOSTDATA(PsiHost[z])->regIrqControl) & 0x8000 ) { shost = PsiHost[z]; break; } } } if ( !shost ) { DEB (printk ("\npci2220i: not my interrupt")); return; } padapter = HOSTDATA(shost); pports = padapter->ports; SCpnt = padapter->SCpnt; if ( !padapter->expectingIRQ ) { DEB(printk ("\npci2220i 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; switch ( padapter->ide.ide.ides.cmd ) // decide how to handle the interrupt { case IDE_CMD_READ_MULTIPLE: if ( padapter->readPhase == 1 ) // is this a bus master channel complete? { DEB(printk ("\npci2220i processing read interrupt cleanup")); outb_p (0x08, padapter->regDmaCmdStat); // cancel interrupt from DMA engine 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; } padapter->readPhase = 0; if ( !(status = IdeCmd (padapter)) ) { DEB (printk ("\npci2220i interrupt complete, waiting for another")); return; } } if ( status & IDE_STATUS_DRQ ) { DEB(printk ("\npci2220i processing read interrupt start bus master cycle")); outb_p (8, padapter->regDmaDesc); // read operation padapter->readPhase = 1; padapter->expectingIRQ = 1; outl (padapter->timingAddress, padapter->regDmaAddrLoc); outl (virt_to_bus (padapter->buffer), padapter->regDmaAddrPci); outl ((ULONG)padapter->ide.ide.ides.sectors * (ULONG)512, padapter->regDmaCount); outb_p (5, padapter->regDmaMode); // interrupt enable/disable outb_p (0x03, padapter->regDmaCmdStat); // kick the DMA engine in gear return; } break; case IDE_CMD_WRITE_MULTIPLE: DEB(printk ("\npci2220i processing write interrupt cleanup")); 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)) ) { DEB (printk ("\npci2220i interrupt complete, waiting for another")); return; } break; case IDE_COMMAND_IDENTIFY: { PINQUIRYDATA pinquiryData = SCpnt->request_buffer; DEB(printk ("\npci2220i processing verify interrupt cleanup")); 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: DEB(printk ("\npci2220i no real process here!")); SCpnt->result = DID_OK << 16; padapter->SCpnt = NULL; SCpnt->scsi_done (SCpnt); return; } irqerror:; DEB(printk ("\npci2220i error Device Status: %X\n", status)); SCpnt->result = DecodeError (shost, status); SCpnt->scsi_done (SCpnt); } /**************************************************************** * Name: Pci2220i_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 Pci2220i_QueueCommand (Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *)) { UCHAR *cdb = (UCHAR *)SCpnt->cmnd; // Pointer to SCSI CDB PADAPTER2220I padapter = HOSTDATA(SCpnt->host); // Pointer to adapter control structure POUR_DEVICE pdev = &padapter->device[SCpnt->target];// 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->lun ) { SCpnt->result = DID_BAD_TARGET << 16; done (SCpnt); return 0; } } else { printk("pci2220i_queuecommand: %02X: done can't be NULL\n", *cdb); return 0; } 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])); 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; padapter->readPhase = 0; 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; padapter->readPhase = 0; 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 ("pci2220i_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 ("pci2220i_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; } if ( padapter->ide.ide.ides.cmd == IDE_CMD_WRITE_MULTIPLE ) { if ( WriteData (padapter) ) { padapter->expectingIRQ = 0; DEB (printk ("pci2220i_queuecommand: %02X, %02X: Device failed to accept data\n", *cdb, padapter->ide.ide.ides.cmd)); SCpnt->result = DID_ERROR << 16; done (SCpnt); return 0; } } DEB (printk(" now waiting for initial interrupt ")); return 0; } static void internal_done(Scsi_Cmnd * SCpnt) { SCpnt->SCp.Status++; } /**************************************************************** * Name: Pci2220i_Command * * Description: Process a command from the SCSI manager. * * Parameters: SCpnt - Pointer to SCSI command structure. * * Returns: Status code. * ****************************************************************/ int Pci2220i_Command (Scsi_Cmnd *SCpnt) { DEB(printk("pci2220i_command: ..calling pci2220i_queuecommand\n")); Pci2220i_QueueCommand (SCpnt, internal_done); SCpnt->SCp.Status = 0; while (!SCpnt->SCp.Status) barrier (); return SCpnt->result; } /**************************************************************** * Name: ReadFlash * * Description: Read information from controller Flash memory. * * Parameters: hostdata - Pointer to host interface data structure. * pdata - Pointer to data structures. * base - base address in Flash. * length - lenght of data space in bytes. * * Returns: Nothing. * ****************************************************************/ VOID ReadFlash (PADAPTER2220I hostdata, VOID *pdata, ULONG base, ULONG length) { ULONG oldremap; UCHAR olddesc; ULONG z; UCHAR *pd = (UCHAR *)pdata; oldremap = inl (hostdata->regRemap); // save values to restore later olddesc = inb_p (hostdata->regDesc); outl (base | 1, hostdata->regRemap); // remap to Flash space as specified outb_p (0x40, hostdata->regDesc); // describe remap region as 8 bit for ( z = 0; z < length; z++) // get "length" data count *pd++ = inb_p (hostdata->regBase + z); // read in the data outl (oldremap, hostdata->regRemap); // restore remap register values outb_p (olddesc, hostdata->regDesc); } /**************************************************************** * Name: Pci2220i_Detect * * Description: Detect and initialize our boards. * * Parameters: tpnt - Pointer to SCSI host template structure. * * Returns: Number of adapters found. * ****************************************************************/ int Pci2220i_Detect (Scsi_Host_Template *tpnt) { int pci_index = 0; struct Scsi_Host *pshost; PADAPTER2220I hostdata; ULONG modearray[] = {DALE_DATA_MODE2, DALE_DATA_MODE3, DALE_DATA_MODE4, DALE_DATA_MODE4P}; int unit; int z; int setirq; if ( pcibios_present () ) { for ( pci_index = 0; pci_index <= MAXADAPTER; ++pci_index ) { UCHAR pci_bus, pci_device_fn; if ( pcibios_find_device (VENDOR_PSI, DEVICE_DALE_1, pci_index, &pci_bus, &pci_device_fn) != 0 ) break; pshost = scsi_register (tpnt, sizeof(ADAPTER2220I)); hostdata = HOSTDATA(pshost); pcibios_read_config_word (pci_bus, pci_device_fn, PCI_BASE_ADDRESS_1, &hostdata->basePort); hostdata->basePort &= 0xFFFE; DEB (printk ("\nBase Regs = %#04X", hostdata->basePort)); hostdata->regRemap = hostdata->basePort + RTR_LOCAL_REMAP; // 32 bit local space remap DEB (printk (" %#04X", hostdata->regRemap)); hostdata->regDesc = hostdata->basePort + RTR_REGIONS; // 32 bit local region descriptor DEB (printk (" %#04X", hostdata->regDesc)); hostdata->regRange = hostdata->basePort + RTR_LOCAL_RANGE; // 32 bit local range DEB (printk (" %#04X", hostdata->regRange)); hostdata->regIrqControl = hostdata->basePort + RTR_INT_CONTROL_STATUS; // 16 bit interupt control and status DEB (printk (" %#04X", hostdata->regIrqControl)); hostdata->regScratchPad = hostdata->basePort + RTR_MAILBOX; // 16 byte scratchpad I/O base address DEB (printk (" %#04X", hostdata->regScratchPad)); pcibios_read_config_word (pci_bus, pci_device_fn, PCI_BASE_ADDRESS_2, &hostdata->regBase); hostdata->regBase &= 0xFFFE; for ( z = 0; z < 9; z++ ) // build regester address array hostdata->ports[z] = hostdata->regBase + 0x80 + (z * 4); hostdata->ports[PORT_FAIL] = hostdata->regBase + REG_FAIL; hostdata->ports[PORT_ALT_STAT] = hostdata->regBase + REG_ALT_STAT; DEB (printk ("\nPorts =")); DEB (for (z=0;z<11;z++) printk(" %#04X", hostdata->ports[z]);); hostdata->regDmaDesc = hostdata->regBase + RTL_DMA1_DESC_PTR; // address of the DMA discriptor register for direction of transfer DEB (printk ("\nDMA Regs = %#04X", hostdata->regDmaDesc)); hostdata->regDmaCmdStat = hostdata->regBase + RTL_DMA_COMMAND_STATUS + 1; // Byte #1 of DMA command status register DEB (printk (" %#04X", hostdata->regDmaCmdStat)); hostdata->regDmaAddrPci = hostdata->regBase + RTL_DMA1_PCI_ADDR; // 32 bit register for PCI address of DMA DEB (printk (" %#04X", hostdata->regDmaAddrPci)); hostdata->regDmaAddrLoc = hostdata->regBase + RTL_DMA1_LOCAL_ADDR; // 32 bit register for local bus address of DMA DEB (printk (" %#04X", hostdata->regDmaAddrLoc)); hostdata->regDmaCount = hostdata->regBase + RTL_DMA1_COUNT; // 32 bit register for DMA transfer count DEB (printk (" %#04X", hostdata->regDmaCount)); hostdata->regDmaMode = hostdata->regBase + RTL_DMA1_MODE + 1; // 32 bit register for DMA mode control DEB (printk (" %#04X", hostdata->regDmaMode)); if ( !inb_p (hostdata->regScratchPad + DALE_NUM_DRIVES) ) // if no devices on this board goto unregister; pcibios_read_config_byte (pci_bus, pci_device_fn, PCI_INTERRUPT_LINE, &pshost->irq); setirq = 1; for ( z = 0; z < pci_index; 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, 0, "pci2220i", NULL) ) { printk ("Unable to allocate IRQ for PSI-2220I controller.\n"); goto unregister; } } PsiHost[pci_index] = pshost; // save SCSI_HOST pointer pshost->unique_id = hostdata->regBase; pshost->max_id = 4; outb_p (0x01, hostdata->regRange); // fix our range register because other drivers want to tromp on it hostdata->timingMode = inb_p (hostdata->regScratchPad + DALE_TIMING_MODE); hostdata->timingAddress = modearray[hostdata->timingMode - 2]; ReadFlash (hostdata, &DaleSetup, DALE_FLASH_SETUP, sizeof (SETUP)); for ( z = 0; z < inb_p (hostdata->regScratchPad + DALE_NUM_DRIVES); ++z ) { unit = inb_p (hostdata->regScratchPad + DALE_CHANNEL_DEVICE_0 + z) & 0x0F; hostdata->device[unit].device = inb_p (hostdata->regScratchPad + DALE_SCRATH_DEVICE_0 + unit); hostdata->device[unit].byte6 = (UCHAR)(((unit & 1) << 4) | 0xE0); hostdata->device[unit].spigot = (UCHAR)(1 << (unit >> 1)); hostdata->device[unit].sectors = DaleSetup.setupDevice[unit].sectors; hostdata->device[unit].heads = DaleSetup.setupDevice[unit].heads; hostdata->device[unit].cylinders = DaleSetup.setupDevice[unit].cylinders; hostdata->device[unit].blocks = DaleSetup.setupDevice[unit].blocks; DEB (printk ("\nHOSTDATA->device = %X", hostdata->device[unit].device)); DEB (printk ("\n byte6 = %X", hostdata->device[unit].byte6)); DEB (printk ("\n spigot = %X", hostdata->device[unit].spigot)); DEB (printk ("\n sectors = %X", hostdata->device[unit].sectors)); DEB (printk ("\n heads = %X", hostdata->device[unit].heads)); DEB (printk ("\n cylinders = %X", hostdata->device[unit].cylinders)); DEB (printk ("\n blocks = %lX", hostdata->device[unit].blocks)); } printk("\nPSI-2220I EIDE CONTROLLER: at I/O = %X/%X IRQ = %d\n", hostdata->basePort, hostdata->regBase, pshost->irq); printk("(C) 1997 Perceptive Solutions, Inc. All rights reserved\n\n"); NumAdapters++; continue; unregister:; scsi_unregister (pshost); } } return NumAdapters; } /**************************************************************** * Name: Pci2220i_Abort * * Description: Process the Abort command from the SCSI manager. * * Parameters: SCpnt - Pointer to SCSI command structure. * * Returns: Allways snooze. * ****************************************************************/ int Pci2220i_Abort (Scsi_Cmnd *SCpnt) { DEB (printk ("pci2220i_abort\n")); return SCSI_ABORT_SNOOZE; } /**************************************************************** * Name: Pci2220i_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 Pci2220i_Reset (Scsi_Cmnd *SCpnt, unsigned int reset_flags) { return SCSI_RESET_PUNT; } #include "sd.h" /**************************************************************** * Name: Pci2220i_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 Pci2220i_BiosParam (Scsi_Disk *disk, kdev_t dev, int geom[]) { POUR_DEVICE pdev; pdev = &(HOSTDATA(disk->device->host)->device[disk->device->id]); geom[0] = pdev->heads; geom[1] = pdev->sectors; geom[2] = pdev->cylinders; return 0; } #ifdef MODULE /* Eventually this will go into an include file, but this will be later */ Scsi_Host_Template driver_template = PCI2220I; #include "scsi_module.c" #endif