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Diffstat (limited to '')
| -rw-r--r-- | private/ntos/miniport/trantor/source/port.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/private/ntos/miniport/trantor/source/port.c b/private/ntos/miniport/trantor/source/port.c new file mode 100644 index 000000000..e2246b3c6 --- /dev/null +++ b/private/ntos/miniport/trantor/source/port.c @@ -0,0 +1,62 @@ +//---------------------------------------------------------------------- +// File: PORT.C +// +// Contains generic port access routines. +// +// Revisions: +// 01-08-93 KJB First. +// 03-25-93 JAP Fixed up typedef and prototype inconsistencies +// +//---------------------------------------------------------------------- + +#include CARDTXXX_H + + +// +// CardPortSet +// +// This routine sets a mask on a certain port. It or's the mask with +// the value currently at the port. Works only for ports where all bits +// are readable and writable. +// + +VOID CardPortSet (PUCHAR baseIoAddress, UCHAR mask) +{ + UCHAR tmp; + + CardPortGet (baseIoAddress,&tmp); + tmp = tmp | mask; + CardPortPut (baseIoAddress,tmp); +} + + +// +// CardPortClear +// +// This routine clears a mask on a certain port. It and's the inverse with +// the value currently at the port. Works only for ports where all bits +// are readable and writable. +// +VOID CardPortClear (PUCHAR baseIoAddress, UCHAR mask) +{ + UCHAR tmp; + + CardPortGet(baseIoAddress,&tmp); + tmp = tmp & (0xff ^ mask); + CardPortPut(baseIoAddress,tmp); +} + +// +// CardPortTest +// +// This routine clears a mask on a certain port. It and's the mask with +// the value currently at the port. This result is returned. +// +BOOLEAN CardPortTest(PUCHAR baseIoAddress, UCHAR mask) +{ + UCHAR tmp; + + CardPortGet(baseIoAddress,&tmp); + return (tmp & mask); +} + |