i386/linux-2.3.21/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/blk.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 struct proc_dir_entry proc_scsi_mvme16x = {
  25     PROC_SCSI_MVME16x, 7, "MVME16x",
  26     S_IFDIR | S_IRUGO | S_IXUGO, 2
  27 };
  28
  29 extern ncr53c7xx_init (Scsi_Host_Template *tpnt, int board, int chip,
  30                         u32 base, int io_port, int irq, int dma,
  31                         long long options, int clock);
  32
  33 int mvme16x_scsi_detect(Scsi_Host_Template *tpnt)
  34 {
  35     static unsigned char called = 0;
  36     int clock;
  37     long long options;
  38
  39     if (!MACH_IS_MVME16x)
  40                 return 0;
  41     if (mvme16x_config & MVME16x_CONFIG_NO_SCSICHIP) {
  42         printk ("SCSI detection disabled, SCSI chip not present\n");
  43         return 0;
  44     }
  45     if (called)
  46         return 0;
  47
  48     tpnt->proc_dir = &proc_scsi_mvme16x;
  49
  50     options = OPTION_MEMORY_MAPPED|OPTION_DEBUG_TEST1|OPTION_INTFLY|OPTION_SYNCHRONOUS|OPTION_ALWAYS_SYNCHRONOUS|OPTION_DISCONNECT;
  51
  52     clock = 66000000;   /* 66MHz SCSI Clock */
  53
  54     ncr53c7xx_init(tpnt, 0, 710, (u32)0xfff47000,
  55                         0, MVME16x_IRQ_SCSI, DMA_NONE,
  56                         options, clock);
  57     called = 1;
  58     return 1;
  59 }