drivers/scsi/mvme16x.c

   1 /*
   2  * Detection routine for the NCR53c710 based MVME16x 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
  11 #include <asm/page.h>
  12 #include <asm/pgtable.h>
  13 #include <asm/mvme16xhw.h>
  14 #include <asm/irq.h>
  15
  16 #include "scsi.h"
  17 #include <scsi/scsi_host.h>
  18 #include "53c7xx.h"
  19 #include "mvme16x.h"
  20
  21 #include<linux/stat.h>
  22
  23
  24 int mvme16x_scsi_detect(struct scsi_host_template *tpnt)
  25 {
  26     static unsigned char called = 0;
  27     int clock;
  28     long long options;
  29
  30     if (!MACH_IS_MVME16x)
  31                 return 0;
  32     if (mvme16x_config & MVME16x_CONFIG_NO_SCSICHIP) {
  33         printk ("SCSI detection disabled, SCSI chip not present\n");
  34         return 0;
  35     }
  36     if (called)
  37         return 0;
  38
  39     tpnt->proc_name = "MVME16x";
  40
  41     options = OPTION_MEMORY_MAPPED|OPTION_DEBUG_TEST1|OPTION_INTFLY|OPTION_SYNCHRONOUS|OPTION_ALWAYS_SYNCHRONOUS|OPTION_DISCONNECT;
  42
  43     clock = 66000000;   /* 66MHz SCSI Clock */
  44
  45     ncr53c7xx_init(tpnt, 0, 710, (unsigned long)0xfff47000,
  46                         0, MVME16x_IRQ_SCSI, DMA_NONE,
  47                         options, clock);
  48     called = 1;
  49     return 1;
  50 }
  51
  52 static int mvme16x_scsi_release(struct Scsi_Host *shost)
  53 {
  54         if (shost->irq)
  55                 free_irq(shost->irq, NULL);
  56         if (shost->dma_channel != 0xff)
  57                 free_dma(shost->dma_channel);
  58         if (shost->io_port && shost->n_io_port)
  59                 release_region(shost->io_port, shost->n_io_port);
  60         scsi_unregister(shost);
  61         return 0;
  62 }
  63
  64 static struct scsi_host_template driver_template = {
  65         .name                   = "MVME16x NCR53c710 SCSI",
  66         .detect                 = mvme16x_scsi_detect,
  67         .release                = mvme16x_scsi_release,
  68         .queuecommand           = NCR53c7xx_queue_command,
  69         .abort                  = NCR53c7xx_abort,
  70         .reset                  = NCR53c7xx_reset,
  71         .can_queue              = 24,
  72         .this_id                = 7,
  73         .sg_tablesize           = 63,
  74         .cmd_per_lun            = 3,
  75         .use_clustering         = DISABLE_CLUSTERING
  76 };
  77
  78
  79 #include "scsi_module.c"