rom/devs/ata/timer.c

   1 /*
   2     Copyright © 2009-2013, The AROS Development Team. All rights reserved
   3     $Id$
   4
   5     Desc:
   6     Lang: English
   7 */
   8
   9 #include <aros/debug.h>
  10
  11 #include <proto/exec.h>
  12
  13 /* We want all other bases obtained from our base */
  14 #define __NOLIBBASE__
  15
  16 #include <proto/timer.h>
  17
  18 #include <exec/types.h>
  19 #include <devices/timer.h>
  20 #include <exec/io.h>
  21
  22 #include "timer.h"
  23 #include "ata.h"
  24
  25 struct IORequest *ata_OpenTimer(struct ataBase *base)
  26 {
  27     struct MsgPort *p = CreateMsgPort();
  28     if (NULL != p)
  29     {
  30         struct IORequest *io = CreateIORequest(p, sizeof(struct timerequest));
  31
  32         if (NULL != io)
  33         {
  34             /*
  35              * ok. ECLOCK does not have too great resolution, either.
  36              * we will have to sacrifice our performance a little bit, meaning, the 400ns will turn into (worst case) 2us.
  37              * hopefully we won't have to call that TOO often...
  38              */
  39             if (0 == OpenDevice("timer.device", UNIT_MICROHZ, io, 0))
  40             {
  41                 return io;
  42             }
  43             else
  44             {
  45                 bug("[ATA  ] Failed to open timer.device, unit MICROHZ\n");
  46             }
  47             DeleteIORequest(io);
  48         }
  49         else
  50         {
  51             bug("[ATA  ] Failed to create timerequest\n");
  52         }
  53         DeleteMsgPort(p);
  54     }
  55     else
  56     {
  57         bug("[ATA  ] Failed to create timer port\n");
  58     }
  59
  60     return NULL;
  61 }
  62
  63 void ata_CloseTimer(struct IORequest *tmr)
  64 {
  65     if (NULL != tmr)
  66     {
  67         struct MsgPort *p = tmr->io_Message.mn_ReplyPort;
  68         CloseDevice(tmr);
  69         DeleteIORequest(tmr);
  70         DeleteMsgPort(p);
  71     }
  72 }