356 lines
8.2 KiB
C
356 lines
8.2 KiB
C
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/*
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* Generic Generic NCR5380 driver
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*
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* Copyright 1995-2002, Russell King
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*/
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#include <linux/module.h>
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#include <linux/signal.h>
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#include <linux/sched.h>
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#include <linux/ioport.h>
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#include <linux/delay.h>
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#include <linux/blkdev.h>
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#include <linux/init.h>
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#include <asm/ecard.h>
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#include <asm/io.h>
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#include <asm/irq.h>
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#include <asm/system.h>
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#include "../scsi.h"
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#include <scsi/scsi_host.h>
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#include <scsi/scsicam.h>
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#define AUTOSENSE
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#define PSEUDO_DMA
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#define CUMANASCSI_PUBLIC_RELEASE 1
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#define NCR5380_implementation_fields int port, ctrl
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#define NCR5380_local_declare() struct Scsi_Host *_instance
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#define NCR5380_setup(instance) _instance = instance
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#define NCR5380_read(reg) cumanascsi_read(_instance, reg)
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#define NCR5380_write(reg, value) cumanascsi_write(_instance, reg, value)
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#define NCR5380_intr cumanascsi_intr
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#define NCR5380_queue_command cumanascsi_queue_command
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#define NCR5380_proc_info cumanascsi_proc_info
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#define BOARD_NORMAL 0
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#define BOARD_NCR53C400 1
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#include "../NCR5380.h"
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void cumanascsi_setup(char *str, int *ints)
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{
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}
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const char *cumanascsi_info(struct Scsi_Host *spnt)
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{
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return "";
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}
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#ifdef NOT_EFFICIENT
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#define CTRL(p,v) outb(*ctrl = (v), (p) - 577)
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#define STAT(p) inb((p)+1)
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#define IN(p) inb((p))
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#define OUT(v,p) outb((v), (p))
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#else
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#define CTRL(p,v) (p[-2308] = (*ctrl = (v)))
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#define STAT(p) (p[4])
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#define IN(p) (*(p))
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#define IN2(p) ((unsigned short)(*(volatile unsigned long *)(p)))
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#define OUT(v,p) (*(p) = (v))
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#define OUT2(v,p) (*((volatile unsigned long *)(p)) = (v))
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#endif
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#define L(v) (((v)<<16)|((v) & 0x0000ffff))
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#define H(v) (((v)>>16)|((v) & 0xffff0000))
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static inline int
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NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *addr, int len)
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{
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int *ctrl = &((struct NCR5380_hostdata *)instance->hostdata)->ctrl;
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int oldctrl = *ctrl;
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unsigned long *laddr;
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#ifdef NOT_EFFICIENT
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int iobase = instance->io_port;
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int dma_io = iobase & ~(0x3C0000>>2);
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#else
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volatile unsigned char *iobase = (unsigned char *)ioaddr(instance->io_port);
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volatile unsigned char *dma_io = (unsigned char *)((int)iobase & ~0x3C0000);
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#endif
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if(!len) return 0;
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CTRL(iobase, 0x02);
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laddr = (unsigned long *)addr;
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while(len >= 32)
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{
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int status;
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unsigned long v;
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status = STAT(iobase);
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if(status & 0x80)
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goto end;
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if(!(status & 0x40))
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continue;
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v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
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v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
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v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
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v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
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v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
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v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
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v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
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v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
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len -= 32;
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if(len == 0)
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break;
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}
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addr = (unsigned char *)laddr;
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CTRL(iobase, 0x12);
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while(len > 0)
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{
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int status;
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status = STAT(iobase);
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if(status & 0x80)
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goto end;
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if(status & 0x40)
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{
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OUT(*addr++, dma_io);
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if(--len == 0)
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break;
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}
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status = STAT(iobase);
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if(status & 0x80)
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goto end;
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if(status & 0x40)
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{
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OUT(*addr++, dma_io);
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if(--len == 0)
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break;
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}
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}
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end:
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CTRL(iobase, oldctrl|0x40);
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return len;
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}
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static inline int
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NCR5380_pread(struct Scsi_Host *instance, unsigned char *addr, int len)
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{
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int *ctrl = &((struct NCR5380_hostdata *)instance->hostdata)->ctrl;
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int oldctrl = *ctrl;
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unsigned long *laddr;
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#ifdef NOT_EFFICIENT
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int iobase = instance->io_port;
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int dma_io = iobase & ~(0x3C0000>>2);
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#else
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volatile unsigned char *iobase = (unsigned char *)ioaddr(instance->io_port);
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volatile unsigned char *dma_io = (unsigned char *)((int)iobase & ~0x3C0000);
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#endif
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if(!len) return 0;
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CTRL(iobase, 0x00);
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laddr = (unsigned long *)addr;
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while(len >= 32)
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{
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int status;
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status = STAT(iobase);
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if(status & 0x80)
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goto end;
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if(!(status & 0x40))
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continue;
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*laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
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*laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
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*laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
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*laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
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*laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
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*laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
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*laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
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*laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
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len -= 32;
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if(len == 0)
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break;
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}
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addr = (unsigned char *)laddr;
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CTRL(iobase, 0x10);
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while(len > 0)
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{
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int status;
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status = STAT(iobase);
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if(status & 0x80)
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goto end;
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if(status & 0x40)
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{
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*addr++ = IN(dma_io);
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if(--len == 0)
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break;
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}
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status = STAT(iobase);
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if(status & 0x80)
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goto end;
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if(status & 0x40)
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{
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*addr++ = IN(dma_io);
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if(--len == 0)
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break;
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}
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}
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end:
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CTRL(iobase, oldctrl|0x40);
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return len;
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}
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#undef STAT
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#undef CTRL
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#undef IN
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#undef OUT
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#define CTRL(p,v) outb(*ctrl = (v), (p) - 577)
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static char cumanascsi_read(struct Scsi_Host *instance, int reg)
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{
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unsigned int iobase = instance->io_port;
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int i;
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int *ctrl = &((struct NCR5380_hostdata *)instance->hostdata)->ctrl;
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CTRL(iobase, 0);
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i = inb(iobase + 64 + reg);
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CTRL(iobase, 0x40);
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return i;
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}
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static void cumanascsi_write(struct Scsi_Host *instance, int reg, int value)
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{
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int iobase = instance->io_port;
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int *ctrl = &((struct NCR5380_hostdata *)instance->hostdata)->ctrl;
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CTRL(iobase, 0);
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outb(value, iobase + 64 + reg);
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CTRL(iobase, 0x40);
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}
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#undef CTRL
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#include "../NCR5380.c"
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static Scsi_Host_Template cumanascsi_template = {
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.module = THIS_MODULE,
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.name = "Cumana 16-bit SCSI",
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.info = cumanascsi_info,
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.queuecommand = cumanascsi_queue_command,
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.eh_abort_handler = NCR5380_abort,
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.eh_bus_reset_handler = NCR5380_bus_reset,
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.can_queue = 16,
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.this_id = 7,
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.sg_tablesize = SG_ALL,
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.cmd_per_lun = 2,
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.unchecked_isa_dma = 0,
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.use_clustering = DISABLE_CLUSTERING,
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.proc_name = "CumanaSCSI-1",
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};
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static int __devinit
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cumanascsi1_probe(struct expansion_card *ec, const struct ecard_id *id)
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{
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struct Scsi_Host *host;
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int ret = -ENOMEM;
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host = scsi_host_alloc(&cumanascsi_template, sizeof(struct NCR5380_hostdata));
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if (!host)
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goto out;
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host->io_port = ecard_address(ec, ECARD_IOC, ECARD_SLOW) + 0x800;
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host->irq = ec->irq;
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NCR5380_init(host, 0);
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host->n_io_port = 255;
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if (!(request_region(host->io_port, host->n_io_port, "CumanaSCSI-1"))) {
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ret = -EBUSY;
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goto out_free;
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}
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((struct NCR5380_hostdata *)host->hostdata)->ctrl = 0;
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outb(0x00, host->io_port - 577);
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ret = request_irq(host->irq, cumanascsi_intr, SA_INTERRUPT,
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"CumanaSCSI-1", host);
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if (ret) {
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printk("scsi%d: IRQ%d not free: %d\n",
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host->host_no, host->irq, ret);
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goto out_release;
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}
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printk("scsi%d: at port 0x%08lx irq %d",
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host->host_no, host->io_port, host->irq);
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printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d",
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host->can_queue, host->cmd_per_lun, CUMANASCSI_PUBLIC_RELEASE);
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printk("\nscsi%d:", host->host_no);
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NCR5380_print_options(host);
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printk("\n");
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ret = scsi_add_host(host, &ec->dev);
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if (ret)
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goto out_free_irq;
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scsi_scan_host(host);
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goto out;
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out_free_irq:
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free_irq(host->irq, host);
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out_release:
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release_region(host->io_port, host->n_io_port);
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out_free:
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scsi_host_put(host);
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out:
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return ret;
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}
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static void __devexit cumanascsi1_remove(struct expansion_card *ec)
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{
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struct Scsi_Host *host = ecard_get_drvdata(ec);
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ecard_set_drvdata(ec, NULL);
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scsi_remove_host(host);
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free_irq(host->irq, host);
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NCR5380_exit(host);
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release_region(host->io_port, host->n_io_port);
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scsi_host_put(host);
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}
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static const struct ecard_id cumanascsi1_cids[] = {
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{ MANU_CUMANA, PROD_CUMANA_SCSI_1 },
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{ 0xffff, 0xffff }
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};
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static struct ecard_driver cumanascsi1_driver = {
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.probe = cumanascsi1_probe,
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.remove = __devexit_p(cumanascsi1_remove),
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.id_table = cumanascsi1_cids,
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.drv = {
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.name = "cumanascsi1",
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},
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};
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static int __init cumanascsi_init(void)
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{
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return ecard_register_driver(&cumanascsi1_driver);
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}
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static void __exit cumanascsi_exit(void)
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{
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ecard_remove_driver(&cumanascsi1_driver);
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}
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module_init(cumanascsi_init);
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module_exit(cumanascsi_exit);
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MODULE_DESCRIPTION("Cumana SCSI-1 driver for Acorn machines");
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MODULE_LICENSE("GPL");
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