drivers/scsi/bvme6000.c

   1 /*
   2  * Detection routine for the NCR53c710 based BVME6000 SCSI Controllers for Linux.
   3  *
   4  * Based on work by Alan Hourihane
   5  */
   6 #include <linux/types.h>
   7 #include <linux/mm.h>
   8 #include <linux/blkdev.h>
   9 #include <linux/sched.h>
  10 #include <linux/zorro.h>
  11
  12 #include <asm/setup.h>
  13 #include <asm/page.h>
  14 #include <asm/pgtable.h>
  15 #include <asm/bvme6000hw.h>
  16 #include <asm/irq.h>
  17
  18 #include "scsi.h"
  19 #include <scsi/scsi_host.h>
  20 #include "53c7xx.h"
  21 #include "bvme6000.h"
  22
  23 #include<linux/stat.h>
  24
  25
  26 int bvme6000_scsi_detect(struct scsi_host_template *tpnt)
  27 {
  28     static unsigned char called = 0;
  29     int clock;
  30     long long options;
  31
  32     if (called)
  33         return 0;
  34     if (!MACH_IS_BVME6000)
  35         return 0;
  36
  37     tpnt->proc_name = "BVME6000";
  38
  39     options = OPTION_MEMORY_MAPPED|OPTION_DEBUG_TEST1|OPTION_INTFLY|OPTION_SYNCHRONOUS|OPTION_ALWAYS_SYNCHRONOUS|OPTION_DISCONNECT;
  40
  41     clock = 40000000;   /* 66MHz SCSI Clock */
  42
  43     ncr53c7xx_init(tpnt, 0, 710, (unsigned long)BVME_NCR53C710_BASE,
  44                         0, BVME_IRQ_SCSI, DMA_NONE,
  45                         options, clock);
  46     called = 1;
  47     return 1;
  48 }
  49
  50 static int bvme6000_scsi_release(struct Scsi_Host *shost)
  51 {
  52         if (shost->irq)
  53                 free_irq(shost->irq, NULL);
  54         if (shost->dma_channel != 0xff)
  55                 free_dma(shost->dma_channel);
  56         if (shost->io_port && shost->n_io_port)
  57                 release_region(shost->io_port, shost->n_io_port);
  58         scsi_unregister(shost);
  59         return 0;
  60 }
  61
  62 static struct scsi_host_template driver_template = {
  63         .name                   = "BVME6000 NCR53c710 SCSI",
  64         .detect                 = bvme6000_scsi_detect,
  65         .release                = bvme6000_scsi_release,
  66         .queuecommand           = NCR53c7xx_queue_command,
  67         .abort                  = NCR53c7xx_abort,
  68         .reset                  = NCR53c7xx_reset,
  69         .can_queue              = 24,
  70         .this_id                = 7,
  71         .sg_tablesize           = 63,
  72         .cmd_per_lun            = 3,
  73         .use_clustering         = DISABLE_CLUSTERING
  74 };
  75
  76
  77 #include "scsi_module.c"