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