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 #include <linux/version.h>
  11
  12 #include <asm/page.h>
  13 #include <asm/pgtable.h>
  14 #include <asm/mvme16xhw.h>
  15 #include <asm/irq.h>
  16
  17 #include "scsi.h"
  18 #include "hosts.h"
  19 #include "53c7xx.h"
  20 #include "mvme16x.h"
  21
  22 #include<linux/stat.h>
  23
  24 extern int ncr53c7xx_init(Scsi_Host_Template *tpnt, int board, int chip,
  25                           unsigned long base, int io_port, int irq, int dma,
  26                           long long options, int clock);
  27
  28 int mvme16x_scsi_detect(Scsi_Host_Template *tpnt)
  29 {
  30     static unsigned char called = 0;
  31     int clock;
  32     long long options;
  33
  34     if (!MACH_IS_MVME16x)
  35                 return 0;
  36     if (mvme16x_config & MVME16x_CONFIG_NO_SCSICHIP) {
  37         printk ("SCSI detection disabled, SCSI chip not present\n");
  38         return 0;
  39     }
  40     if (called)
  41         return 0;
  42
  43     tpnt->proc_name = "MVME16x";
  44
  45     options = OPTION_MEMORY_MAPPED|OPTION_DEBUG_TEST1|OPTION_INTFLY|OPTION_SYNCHRONOUS|OPTION_ALWAYS_SYNCHRONOUS|OPTION_DISCONNECT;
  46
  47     clock = 66000000;   /* 66MHz SCSI Clock */
  48
  49     ncr53c7xx_init(tpnt, 0, 710, (unsigned long)0xfff47000,
  50                         0, MVME16x_IRQ_SCSI, DMA_NONE,
  51                         options, clock);
  52     called = 1;
  53     return 1;
  54 }
  55
  56 static int mvme16x_scsi_release(struct Scsi_Host *shost)
  57 {
  58         if (shost->irq)
  59                 free_irq(shost->irq, NULL);
  60         if (shost->dma_channel != 0xff)
  61                 free_dma(shost->dma_channel);
  62         if (shost->io_port && shost->n_io_port)
  63                 release_region(shost->io_port, shost->n_io_port);
  64         scsi_unregister(shost);
  65         return 0;
  66 }
  67
  68 static Scsi_Host_Template driver_template = {
  69         .name                   = "MVME16x NCR53c710 SCSI",
  70         .detect                 = mvme16x_scsi_detect,
  71         .release                = mvme16x_scsi_release,
  72         .queuecommand           = NCR53c7xx_queue_command,
  73         .abort                  = NCR53c7xx_abort,
  74         .reset                  = NCR53c7xx_reset,
  75         .can_queue              = 24,
  76         .this_id                = 7,
  77         .sg_tablesize           = 63,
  78         .cmd_per_lun            = 3,
  79         .use_clustering         = DISABLE_CLUSTERING
  80 };
  81
  82
  83 #include "scsi_module.c"