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