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- /*
- * This file is in2000.c, written and
- * Copyright (C) 1993 Brad McLean
- * Last edit 1/19/95 TZ
- * Disclaimer:
- * Note: This is ugly. I know it, I wrote it, but my whole
- * focus was on getting the damn thing up and out quickly.
- * Future stuff that would be nice: Command chaining, and
- * a local queue of commands would speed stuff up considerably.
- * Disconnection needs some supporting code. All of this
- * is beyond the scope of what I wanted to address, but if you
- * have time and patience, more power to you.
- * Also, there are some constants scattered throughout that
- * should have defines, and I should have built functions to
- * address the registers on the WD chip.
- * Oh well, I'm out of time for this project.
- * The one good thing to be said is that you can use the card.
- */
-
- /*
- * This module was updated by Shaun Savage first on 5-13-93
- * At that time the write was fixed, irq detection, and some
- * timing stuff. since that time other problems were fixed.
- * On 7-20-93 this file was updated for patch level 11
- * There are still problems with it but it work on 95% of
- * the machines. There are still problems with it working with
- * IDE drives, as swap drive and HD that support reselection.
- * But for most people it will work.
- */
- /* More changes by Bill Earnest, wde@aluxpo.att.com
- * through 4/07/94. Includes rewrites of FIFO routines,
- * length-limited commands to make swap partitions work.
- * Merged the changes released by Larry Doolittle, based on input
- * from Jon Luckey, Roger Sunshine, John Shifflett. The FAST_FIFO
- * doesn't work for me. Scatter-gather code from Eric. The change to
- * an IF stmt. in the interrupt routine finally made it stable.
- * Limiting swap request size patch to ll_rw_blk.c not needed now.
- * Please ignore the clutter of debug stmts., pretty can come later.
- */
- /* Merged code from Matt Postiff improving the auto-sense validation
- * for all I/O addresses. Some reports of problems still come in, but
- * have been unable to reproduce or localize the cause. Some are from
- * LUN > 0 problems, but that is not host specific. Now 6/6/94.
- */
- /* Changes for 1.1.28 kernel made 7/19/94, code not affected. (WDE)
- */
- /* Changes for 1.1.43+ kernels made 8/25/94, code added to check for
- * new BIOS version, derived by jshiffle@netcom.com. (WDE)
- *
- * 1/7/95 Fix from Peter Lu (swift@world.std.com) for datalen vs. dataptr
- * logic, much more stable under load.
- *
- * 1/19/95 (zerucha@shell.portal.com) Added module and biosparam support for
- * larger SCSI hard drives (untested).
- */
-
- #include <linux/kernel.h>
- #include <linux/head.h>
- #include <linux/types.h>
- #include <linux/string.h>
-
- #include <linux/sched.h>
- #include <asm/dma.h>
-
- #include <asm/system.h>
- #include <asm/io.h>
- #include "../block/blk.h"
- #include "scsi.h"
- #include "hosts.h"
- #include "sd.h"
-
- #include "in2000.h"
-
- /*#define FAST_FIFO_IO*/
-
- /*#define DEBUG*/
- #ifdef DEBUG
- #define DEB(x) x
- #else
- #define DEB(x)
- #endif
-
- /* These functions are based on include/asm/io.h */
- #ifndef inw
- inline static unsigned short inw( unsigned short port )
- {
- unsigned short _v;
-
- __asm__ volatile ("inw %1,%0"
- :"=a" (_v):"d" ((unsigned short) port));
- return _v;
- }
- #endif
-
- #ifndef outw
- inline static void outw( unsigned short value, unsigned short port )
- {
- __asm__ volatile ("outw %0,%1"
- : /* no outputs */
- :"a" ((unsigned short) value),
- "d" ((unsigned short) port));
- }
- #endif
-
- /* These functions are lifted from drivers/block/hd.c */
-
- #define port_read(port,buf,nr) \
- __asm__("cld;rep;insw": :"d" (port),"D" (buf),"c" (nr):"cx","di")
-
- #define port_write(port,buf,nr) \
- __asm__("cld;rep;outsw": :"d" (port),"S" (buf),"c" (nr):"cx","si")
-
- static unsigned int base;
- static unsigned int ficmsk;
- static unsigned char irq_level;
- static int in2000_datalen;
- static unsigned int in2000_nsegment;
- static unsigned int in2000_current_segment;
- static unsigned short *in2000_dataptr;
- static char in2000_datawrite;
- static struct scatterlist * in2000_scatter;
- static Scsi_Cmnd *in2000_SCptr = 0;
-
- static void (*in2000_done)(Scsi_Cmnd *);
-
- static int in2000_test_port(int index)
- {
- static const int *bios_tab[] = {
- (int *) 0xc8000, (int *) 0xd0000, (int *) 0xd8000 };
- int i;
- char tmp;
-
- tmp = inb(INFLED);
- /* First, see if the DIP switch values are valid */
- /* The test of B7 may fail on some early boards, mine works. */
- if ( ((~tmp & 0x3) != index ) || (tmp & 0x80) || !(tmp & 0x4) )
- return 0;
- printk("IN-2000 probe got dip setting of %02X\n", tmp);
- tmp = inb(INVERS);
- /* Add some extra sanity checks here */
- for(i=0; i < 3; i++)
- if(*(bios_tab[i]+0x04) == 0x41564f4e ||
- *(bios_tab[i]+0xc) == 0x61776c41) {
- printk("IN-2000 probe found hdw. vers. %02x, BIOS at %06x\n",
- tmp, (unsigned int)bios_tab[i]);
- return 1;
- }
- printk("in2000 BIOS not found.\n");
- return 0;
- }
-
-
- /*
- * retrieve the current transaction counter from the WD
- */
-
- static unsigned in2000_txcnt(void)
- {
- unsigned total=0;
-
- if(inb(INSTAT) & 0x20) return 0xffffff; /* not readable now */
- outb(TXCNTH,INSTAT); /* then autoincrement */
- total = (inb(INDATA) & 0xff) << 16;
- outb(TXCNTM,INSTAT);
- total += (inb(INDATA) & 0xff) << 8;
- outb(TXCNTL,INSTAT);
- total += (inb(INDATA) & 0xff);
- return total;
- }
-
- /*
- * Note: the FIFO is screwy, and has a counter granularity of 16 bytes, so
- * we have to reconcile the FIFO counter, the transaction byte count from the
- * WD chip, and of course, our desired transaction size. It may look strange,
- * and could probably use improvement, but it works, for now.
- */
-
- static void in2000_fifo_out(void) /* uses FIFOCNTR */
- {
- unsigned count, infcnt, txcnt;
-
- infcnt = inb(INFCNT)& 0xfe; /* FIFO counter */
- do {
- txcnt = in2000_txcnt();
- /*DEB(printk("FIw:%d %02x %d\n", in2000_datalen, infcnt, txcnt));*/
- count = (infcnt << 3) - 32; /* don't fill completely */
- if ( count > in2000_datalen )
- count = in2000_datalen; /* limit to actual data on hand */
- count >>= 1; /* Words, not bytes */
- #ifdef FAST_FIFO_IO
- if ( count ) {
- port_write(INFIFO, in2000_dataptr, count);
- in2000_datalen -= (count<<1);
- }
- #else
- while ( count-- )
- {
- outw(*in2000_dataptr++, INFIFO);
- in2000_datalen -= 2;
- }
- #endif
- } while((in2000_datalen > 0) && ((infcnt = (inb(INFCNT)) & 0xfe) >= 0x20) );
- /* If scatter-gather, go on to next segment */
- if( !in2000_datalen && ++in2000_current_segment < in2000_nsegment)
- {
- in2000_scatter++;
- in2000_datalen = in2000_scatter->length;
- in2000_dataptr = (unsigned short*)in2000_scatter->address;
- }
- if ( in2000_datalen <= 0 )
- {
- ficmsk = 0;
- count = 32; /* Always says to use this much flush */
- while ( count-- )
- outw(0, INFIFO);
- outb(2, ININTR); /* Mask FIFO Interrupts when done */
- }
- }
-
- static void in2000_fifo_in(void) /* uses FIFOCNTR */
- {
- unsigned fic, count, count2;
-
- count = inb(INFCNT) & 0xe1;
- do{
- count2 = count;
- count = (fic = inb(INFCNT)) & 0xe1;
- } while ( count != count2 );
- DEB(printk("FIir:%d %02x %08x\n", in2000_datalen,fic,(unsigned int )in2000_dataptr));
- do {
- count2 = in2000_txcnt(); /* bytes yet to come over SCSI bus */
- DEB(printk("FIr:%d %02x %08x %08x\n", in2000_datalen,fic,count2,(unsigned int)in2000_dataptr));
- if(count2 > 65536) count2 = 0;
- if(fic > 128) count = 1024;
- else if(fic > 64) count = 512;
- else if (fic > 32) count = 256;
- else if ( count2 < in2000_datalen ) /* if drive has < what we want */
- count = in2000_datalen - count2; /* FIFO has the rest */
- if ( count > in2000_datalen ) /* count2 is lesser of FIFO & rqst */
- count2 = in2000_datalen >> 1; /* converted to word count */
- else
- count2 = count >> 1;
- count >>= 1; /* also to words */
- count -= count2; /* extra left over in FIFO */
- #ifdef FAST_FIFO_IO
- if ( count2 ) {
- port_read(INFIFO, in2000_dataptr, count2);
- in2000_datalen -= (count2<<1);
- }
- #else
- while ( count2-- )
- {
- *in2000_dataptr++ = inw(INFIFO);
- in2000_datalen -=2;
- }
- #endif
- } while((in2000_datalen > 0) && (fic = inb(INFCNT)) );
- DEB(printk("FIer:%d %02x %08x\n", in2000_datalen,fic,(unsigned int )in2000_dataptr));
- /* while ( count-- )
- inw(INFIFO);*/ /* Throw away some extra stuff */
- if( !in2000_datalen && ++in2000_current_segment < in2000_nsegment)
- {
- in2000_scatter++;
- in2000_datalen = in2000_scatter->length;
- in2000_dataptr = (unsigned short*)in2000_scatter->address;
- }
- if ( ! in2000_datalen ){
- outb(2, ININTR); /* Mask FIFO Interrupts when done */
- ficmsk = 0;}
- }
-
- static void in2000_intr_handle(int irq, struct pt_regs *regs)
- {
- int result=0;
- unsigned int count,auxstatus,scsistatus,cmdphase,scsibyte;
- int action=0;
- Scsi_Cmnd *SCptr;
-
- DEB(printk("INT:%d %02x %08x\n", in2000_datalen, inb(INFCNT),(unsigned int)in2000_dataptr));
-
- if (( (ficmsk & (count = inb(INFCNT))) == 0xfe ) ||
- ( (inb(INSTAT) & 0x8c) == 0x80))
- { /* FIFO interrupt or WD interrupt */
- auxstatus = inb(INSTAT); /* need to save now */
- outb(SCSIST,INSTAT);
- scsistatus = inb(INDATA); /* This clears the WD intrpt bit */
- outb(TARGETU,INSTAT); /* then autoincrement */
- scsibyte = inb(INDATA); /* Get the scsi status byte */
- outb(CMDPHAS,INSTAT);
- cmdphase = inb(INDATA);
- DEB(printk("(int2000:%02x %02x %02x %02x %02x)\n",count,auxstatus,
- scsistatus,cmdphase,scsibyte));
-
- /* Why do we assume that we need to send more data here??? ERY */
- if ( in2000_datalen ) /* data xfer pending */
- {
- if ( in2000_dataptr == NULL )
- printk("int2000: dataptr=NULL datalen=%d\n",
- in2000_datalen);
- else if ( in2000_datawrite )
- in2000_fifo_out();
- else
- in2000_fifo_in();
- }
- if ( (auxstatus & 0x8c) == 0x80 )
- { /* There is a WD Chip interrupt & register read good */
- outb(2,ININTR); /* Disable fifo interrupts */
- ficmsk = 0;
- result = DID_OK << 16;
- /* 16=Select & transfer complete, 85=got disconnect */
- if ((scsistatus != 0x16) && (scsistatus != 0x85)
- && (scsistatus != 0x42)){
- /* printk("(WDi2000:%02x %02x %02x %02x %02x)\n",count,auxstatus,
- scsistatus,cmdphase,scsibyte);*/
- /* printk("QDAT:%d %08x %02x\n",
- in2000_datalen,(unsigned int)in2000_dataptr,ficmsk);*/
- ;
- }
- switch ( scsistatus & 0xf0 )
- {
- case 0x00: /* Card Reset Completed */
- action = 3;
- break;
- case 0x10: /* Successful Command Completion */
- if ( scsistatus & 0x8 )
- action = 1;
- break;
- case 0x20: /* Command Paused or Aborted */
- if ( (scsistatus & 0x8) )
- action = 1;
- else if ( (scsistatus & 7) < 2 )
- action = 2;
- else
- result = DID_ABORT << 16;
- break;
- case 0x40: /* Terminated early */
- if ( scsistatus & 0x8 )
- action = 1;
- else if ( (scsistatus & 7) > 2 )
- action = 2;
- else
- result = DID_TIME_OUT << 16;
- break;
- case 0x80: /* Service Required from SCSI bus */
- if ( scsistatus & 0x8 )
- action = 1;
- else
- action = 2;
- break;
- } /* end switch(scsistatus) */
- outb(0,INFLED);
- switch ( action )
- {
- case 0x02: /* Issue an abort */
- outb(COMMAND,INSTAT);
- outb(1,INDATA); /* ABORT COMMAND */
- result = DID_ABORT << 16;
- case 0x00: /* Basically all done */
- if ( ! in2000_SCptr )
- return;
- in2000_SCptr->result = result | scsibyte;
- SCptr = in2000_SCptr;
- in2000_SCptr = 0;
- if ( in2000_done )
- (*in2000_done)(SCptr);
- break;
- case 0x01: /* We need to reissue a command */
- outb(CMDPHAS,INSTAT);
- switch ( scsistatus & 7 )
- {
- case 0: /* Data out phase */
- case 1: /* Data in phase */
- case 4: /* Unspec info out phase */
- case 5: /* Unspec info in phase */
- case 6: /* Message in phase */
- case 7: /* Message in phase */
- outb(0x41,INDATA); /* rdy to disconn */
- break;
- case 2: /* command phase */
- outb(0x30,INDATA); /* rdy to send cmd bytes */
- break;
- case 3: /* status phase */
- outb(0x45,INDATA); /* To go to status phase,*/
- outb(TXCNTH,INSTAT); /* elim. data, autoinc */
- outb(0,INDATA);
- outb(0,INDATA);
- outb(0,INDATA);
- in2000_datalen = 0;
- in2000_dataptr = 0;
- break;
- } /* end switch(scsistatus) */
- outb(COMMAND,INSTAT);
- outb(8,INDATA); /* RESTART THE COMMAND */
- break;
- case 0x03: /* Finish up a Card Reset */
- outb(TIMEOUT,INSTAT); /* I got these values */
- /* by reverse Engineering */
- outb(IN2000_TMOUT,INDATA); /* the Always' bios. */
- outb(CONTROL,INSTAT);
- outb(0,INDATA);
- outb(SYNCTXR,INSTAT);
- outb(0x40,INDATA); /* async, 4 cyc xfer per. */
- break;
- } /* end switch(action) */
- } /* end if auxstatus for WD int */
- } /* end while intrpt active */
- }
-
- int in2000_queuecommand(Scsi_Cmnd * SCpnt, void (*done)(Scsi_Cmnd *))
- {
- unchar direction;
- unchar *cmd = (unchar *) SCpnt->cmnd;
- unchar target = SCpnt->target;
- void *buff = SCpnt->request_buffer;
- unsigned long flags;
- int bufflen = SCpnt->request_bufflen;
- int timeout, size, loop;
- int i;
-
- /*
- * This SCSI command has no data phase, but unfortunately the mid-level
- * SCSI drivers ask for 256 bytes of data xfer. Our card hangs if you
- * do this, so we protect against it here. It would be nice if the mid-
- * level could be changed, but who knows if that would break other host
- * adapter drivers.
- */
- if ( *cmd == TEST_UNIT_READY )
- bufflen = 0;
-
- /*
- * What it looks like. Boy did I get tired of reading its output.
- */
- if (*cmd == READ_10 || *cmd == WRITE_10) {
- i = xscsi2int((cmd+1));
- } else if (*cmd == READ_6 || *cmd == WRITE_6) {
- i = scsi2int((cmd+1));
- } else {
- i = -1;
- }
- #ifdef DEBUG
- printk("in2000qcmd: pos %d len %d ", i, bufflen);
- printk("scsi cmd:");
- for (i = 0; i < SCpnt->cmd_len; i++) printk("%02x ", cmd[i]);
- printk("\n");
- #endif
- direction = 1; /* assume for most commands */
- if (*cmd == WRITE_10 || *cmd == WRITE_6)
- direction = 0;
- size = SCpnt->cmd_len; /* CDB length */
- /*
- * Setup our current pointers
- * This is where you would allocate a control structure in a queue,
- * If you were going to upgrade this to do multiple issue.
- * Note that datalen and dataptr exist because we can change the
- * values during the course of the operation, while managing the
- * FIFO.
- * Note the nasty little first clause. In theory, the mid-level
- * drivers should never hand us more than one command at a time,
- * but just in case someone gets cute in configuring the driver,
- * we'll protect them, although not very politely.
- */
- if ( in2000_SCptr )
- {
- printk("in2000_queue_command waiting for free command block!\n");
- while ( in2000_SCptr );
- }
- for ( timeout = jiffies + 5; timeout > jiffies; )
- {
- if ( ! ( inb(INSTAT) & 0xb0 ) )
- {
- timeout = 0;
- break;
- }
- else
- {
- inb(INSTAT);
- outb(SCSIST,INSTAT);
- inb(INDATA);
- outb(TARGETU,INSTAT); /* then autoinc */
- inb(INDATA);
- inb(INDATA);
- }
- }
- if ( timeout )
- {
- printk("in2000_queue_command timeout!\n");
- SCpnt->result = DID_TIME_OUT << 16;
- (*done)(SCpnt);
- return 1;
- }
- /* Added for scatter-gather support */
- in2000_nsegment = SCpnt->use_sg;
- in2000_current_segment = 0;
- if(SCpnt->use_sg){
- in2000_scatter = (struct scatterlist *) buff;
- in2000_datalen = in2000_scatter->length;
- in2000_dataptr = (unsigned short*)in2000_scatter->address;
- } else {
- in2000_scatter = NULL;
- in2000_datalen = bufflen;
- in2000_dataptr = (unsigned short*) buff;
- };
- in2000_done = done;
- in2000_SCptr = SCpnt;
- /*
- * Write the CDB to the card, then the LUN, the length, and the target.
- */
- outb(TOTSECT, INSTAT); /* start here then autoincrement */
- for ( loop=0; loop < size; loop++ )
- outb(cmd[loop],INDATA);
- outb(TARGETU,INSTAT);
- outb(SCpnt->lun & 7,INDATA);
- SCpnt->host_scribble = NULL;
- outb(TXCNTH,INSTAT); /* then autoincrement */
- outb(bufflen>>16,INDATA);
- outb(bufflen>>8,INDATA);
- outb(bufflen,INDATA);
- outb(target&7,INDATA);
- /*
- * Set up the FIFO
- */
- save_flags(flags);
- cli(); /* so FIFO init waits till WD set */
- outb(0,INFRST);
- if ( direction == 1 )
- {
- in2000_datawrite = 0;
- outb(0,INFWRT);
- }
- else
- {
- in2000_datawrite = 1;
- for ( loop=16; --loop; ) /* preload the outgoing fifo */
- {
- outw(*in2000_dataptr++,INFIFO);
- if(in2000_datalen > 0) in2000_datalen-=2;
- }
- }
- ficmsk = 0xff;
- /*
- * Start it up
- */
- outb(CONTROL,INSTAT); /* WD BUS Mode */
- outb(0x4C,INDATA);
- if ( in2000_datalen ) /* if data xfer cmd */
- outb(0,ININTR); /* Enable FIFO intrpt some boards? */
- outb(COMMAND,INSTAT);
- outb(0,INNLED);
- outb(8,INDATA); /* Select w/ATN & Transfer */
- restore_flags(flags); /* let the intrpt rip */
- return 0;
- }
-
- static volatile int internal_done_flag = 0;
- static volatile int internal_done_errcode = 0;
-
- static void internal_done(Scsi_Cmnd * SCpnt)
- {
- internal_done_errcode = SCpnt->result;
- ++internal_done_flag;
- }
-
- int in2000_command(Scsi_Cmnd * SCpnt)
- {
- in2000_queuecommand(SCpnt, internal_done);
-
- while (!internal_done_flag);
- internal_done_flag = 0;
- return internal_done_errcode;
- }
-
- int in2000_detect(Scsi_Host_Template * tpnt)
- {
- /* Order chosen to reduce conflicts with some multi-port serial boards */
- int base_tab[] = { 0x220,0x200,0x110,0x100 };
- int int_tab[] = { 15,14,11,10 };
- struct Scsi_Host * shpnt;
- int loop, tmp;
-
- DEB(printk("in2000_detect: \n"));
-
- for ( loop=0; loop < 4; loop++ )
- {
- base = base_tab[loop];
- if ( in2000_test_port(loop)) break;
- }
- if ( loop == 4 )
- return 0;
-
- /* Read the dip switch values again for miscellaneous checking and
- informative messages */
- tmp = inb(INFLED);
-
- /* Bit 2 tells us if interrupts are disabled */
- if ( (tmp & 0x4) == 0 ) {
- printk("The IN-2000 is not configured for interrupt operation\n");
- printk("Change the DIP switch settings to enable interrupt operation\n");
- }
-
- /* Bit 6 tells us about floppy controller */
- printk("IN-2000 probe found floppy controller on IN-2000 ");
- if ( (tmp & 0x40) == 0)
- printk("enabled\n");
- else
- printk("disabled\n");
-
- /* Bit 5 tells us about synch/asynch mode */
- printk("IN-2000 probe found IN-2000 in ");
- if ( (tmp & 0x20) == 0)
- printk("synchronous mode\n");
- else
- printk("asynchronous mode\n");
-
- irq_level = int_tab [ ((~inb(INFLED)>>3)&0x3) ];
-
- printk("Configuring IN2000 at IO:%x, IRQ %d"
- #ifdef FAST_FIFO_IO
- " (using fast FIFO I/O code)"
- #endif
- "\n",base, irq_level);
-
- outb(2,ININTR); /* Shut off the FIFO first, so it won't ask for data.*/
- if (request_irq(irq_level,in2000_intr_handle, 0, "in2000"))
- {
- printk("in2000_detect: Unable to allocate IRQ.\n");
- return 0;
- }
- outb(0,INFWRT); /* read mode so WD can intrpt */
- outb(SCSIST,INSTAT);
- inb(INDATA); /* free status reg, clear WD intrpt */
- outb(OWNID,INSTAT);
- outb(0x7,INDATA); /* we use addr 7 */
- outb(COMMAND,INSTAT);
- outb(0,INDATA); /* do chip reset */
- shpnt = scsi_register(tpnt, 0);
- /* Set these up so that we can unload the driver properly. */
- shpnt->io_port = base;
- shpnt->n_io_port = 12;
- shpnt->irq = irq_level;
- request_region(base, 12,"in2000"); /* Prevent other drivers from using this space */
- return 1;
- }
-
- int in2000_abort(Scsi_Cmnd * SCpnt)
- {
- DEB(printk("in2000_abort\n"));
- /*
- * Ask no stupid questions, just order the abort.
- */
- outb(COMMAND,INSTAT);
- outb(1,INDATA); /* Abort Command */
- return 0;
- }
-
- static inline void delay( unsigned how_long )
- {
- unsigned long time = jiffies + how_long;
- while (jiffies < time) ;
- }
-
- int in2000_reset(Scsi_Cmnd * SCpnt)
- {
- DEB(printk("in2000_reset called\n"));
- /*
- * Note: this is finished off by an incoming interrupt
- */
- outb(0,INFWRT); /* read mode so WD can intrpt */
- outb(SCSIST,INSTAT);
- inb(INDATA);
- outb(OWNID,INSTAT);
- outb(0x7,INDATA); /* ID=7,noadv, no parity, clk div=2 (8-10Mhz clk) */
- outb(COMMAND,INSTAT);
- outb(0,INDATA); /* reset WD chip */
- delay(2);
- #ifdef SCSI_RESET_PENDING
- return SCSI_RESET_PENDING;
- #else
- if(SCpnt) SCpnt->flags |= NEEDS_JUMPSTART;
- return 0;
- #endif
- }
-
- int in2000_biosparam(Disk * disk, int dev, int* iinfo)
- {
- int size = disk->capacity;
- DEB(printk("in2000_biosparam\n"));
- iinfo[0] = 64;
- iinfo[1] = 32;
- iinfo[2] = size >> 11;
- /* This should approximate the large drive handling that the DOS ASPI manager
- uses. Drives very near the boundaries may not be handled correctly (i.e.
- near 2.0 Gb and 4.0 Gb) */
- if (iinfo[2] > 1024) {
- iinfo[0] = 64;
- iinfo[1] = 63;
- iinfo[2] = disk->capacity / (iinfo[0] * iinfo[1]);
- }
- if (iinfo[2] > 1024) {
- iinfo[0] = 128;
- iinfo[1] = 63;
- iinfo[2] = disk->capacity / (iinfo[0] * iinfo[1]);
- }
- if (iinfo[2] > 1024) {
- iinfo[0] = 255;
- iinfo[1] = 63;
- iinfo[2] = disk->capacity / (iinfo[0] * iinfo[1]);
- if (iinfo[2] > 1023)
- iinfo[2] = 1023;
- }
- return 0;
- }
-
- #ifdef MODULE
- /* Eventually this will go into an include file, but this will be later */
- Scsi_Host_Template driver_template = IN2000;
-
- #include "scsi_module.c"
- #endif
-
-