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81 lines
1.8 KiB
81 lines
1.8 KiB
20 years ago
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/*
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* Detection routine for the NCR53c710 based MVME16x SCSI Controllers for Linux.
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*
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* Based on work by Alan Hourihane
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*/
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#include <linux/types.h>
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#include <linux/mm.h>
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#include <linux/blkdev.h>
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#include <linux/sched.h>
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#include <linux/version.h>
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#include <asm/page.h>
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#include <asm/pgtable.h>
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#include <asm/mvme16xhw.h>
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#include <asm/irq.h>
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#include "scsi.h"
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#include <scsi/scsi_host.h>
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#include "53c7xx.h"
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#include "mvme16x.h"
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#include<linux/stat.h>
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int mvme16x_scsi_detect(Scsi_Host_Template *tpnt)
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{
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static unsigned char called = 0;
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int clock;
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long long options;
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if (!MACH_IS_MVME16x)
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return 0;
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if (mvme16x_config & MVME16x_CONFIG_NO_SCSICHIP) {
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printk ("SCSI detection disabled, SCSI chip not present\n");
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return 0;
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}
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if (called)
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return 0;
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tpnt->proc_name = "MVME16x";
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options = OPTION_MEMORY_MAPPED|OPTION_DEBUG_TEST1|OPTION_INTFLY|OPTION_SYNCHRONOUS|OPTION_ALWAYS_SYNCHRONOUS|OPTION_DISCONNECT;
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clock = 66000000; /* 66MHz SCSI Clock */
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ncr53c7xx_init(tpnt, 0, 710, (unsigned long)0xfff47000,
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0, MVME16x_IRQ_SCSI, DMA_NONE,
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options, clock);
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called = 1;
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return 1;
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}
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static int mvme16x_scsi_release(struct Scsi_Host *shost)
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{
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if (shost->irq)
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free_irq(shost->irq, NULL);
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if (shost->dma_channel != 0xff)
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free_dma(shost->dma_channel);
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if (shost->io_port && shost->n_io_port)
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release_region(shost->io_port, shost->n_io_port);
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scsi_unregister(shost);
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return 0;
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}
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static Scsi_Host_Template driver_template = {
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.name = "MVME16x NCR53c710 SCSI",
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.detect = mvme16x_scsi_detect,
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.release = mvme16x_scsi_release,
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.queuecommand = NCR53c7xx_queue_command,
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.abort = NCR53c7xx_abort,
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.reset = NCR53c7xx_reset,
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.can_queue = 24,
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.this_id = 7,
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.sg_tablesize = 63,
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.cmd_per_lun = 3,
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.use_clustering = DISABLE_CLUSTERING
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};
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#include "scsi_module.c"
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