/projects/cubeos/src_current/drivers/spi/qsm.c Source File

00001 /*  src_experimental/drivers/tty/qsm.c
00002    CubeOS Version 0.4.90 experimental
00003    Copyright (C) 1999,2000 Holger Kenn
00004 
00005    CubeOS is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Library General Public
00007    License as published by the Free Software Foundation; either
00008    version 2 of the License, or any later version.
00009 
00010    CubeOS is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Library General Public License for more details.
00014 
00015  */
00016 #include <cubeos.h>
00017 #include <mc68332.h>
00018 #include <ivtab.h>
00019 #include <qsm.h>
00020 #include <spi.h>
00021 #include <io_sci.h>
00022 
00023 extern void QSM_qspiWrapper ();
00024 extern void QSM_sciWrapper ();
00025 
00026 int QSM_init ()
00027 {
00028         unsigned short v;
00029 
00030         writeshort (QSM_QSMCR, 0x8e);
00031         /* Bit15: STOP  (QSM clock stopped)
00032            Bit14: FRZ1  (Halt QSM)
00033            Bit7 : SUPV  (all QSM registers in supervisor space)
00034            Bit3..0: IARB (of the QSM module)
00035          */
00036         _KERN_IVTab_setvector (QSM_VECTORNUM, QSM_sciWrapper);
00037         _KERN_IVTab_setvector (QSM_VECTORNUM + 1, QSM_qspiWrapper);
00038 
00039         writebyte (QSM_QIVR, QSM_VECTORNUM);
00040 
00041         /* Bit7..0  INTV (interrupt vector for the QSM module) */
00042         v = readbyte (QSM_QILR);
00043         writebyte (QSM_QILR, (v & 0xf8) | 0x6);
00044         /* Bit13..11: ILQSPI (internal iarb level of QSPI)
00045            Bit10..8 : ILSCI  (internal iarb level of SCI)
00046          */
00047         return 0;
00048 }