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67 lines
2.3 KiB
C
67 lines
2.3 KiB
C
// SPDX-License-Identifier: LGPL-3.0-or-other
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// Copyright (C) 2021 Contributors to the SLS Detector Package
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#include "HardwareIO.h"
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xfs_u8 HWIO_xfs_in8(xfs_u32 InAddress) {
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/* read the contents of the I/O location and then synchronize the I/O
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* such that the I/O operation completes before proceeding on
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*/
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xfs_u8 IoContents;
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__asm__ volatile("eieio; lbz %0,0(%1)" : "=r"(IoContents) : "b"(InAddress));
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return IoContents;
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}
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/*****************************************************************************/
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xfs_u16 HWIO_xfs_in16(xfs_u32 InAddress) {
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/* read the contents of the I/O location and then synchronize the I/O
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* such that the I/O operation completes before proceeding on
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*/
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xfs_u16 IoContents;
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__asm__ volatile("eieio; lhz %0,0(%1)" : "=r"(IoContents) : "b"(InAddress));
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return IoContents;
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}
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/*****************************************************************************/
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xfs_u32 HWIO_xfs_in32(xfs_u32 InAddress) {
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/* read the contents of the I/O location and then synchronize the I/O
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* such that the I/O operation completes before proceeding on
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*/
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xfs_u32 IoContents;
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__asm__ volatile("eieio; lwz %0,0(%1)" : "=r"(IoContents) : "b"(InAddress));
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return IoContents;
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}
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/*****************************************************************************/
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void HWIO_xfs_out8(xfs_u32 OutAddress, xfs_u8 Value) {
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/* write the contents of the I/O location and then synchronize the I/O
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* such that the I/O operation completes before proceeding on
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*/
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__asm__ volatile("stb %0,0(%1); eieio" ::"r"(Value), "b"(OutAddress));
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}
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/*****************************************************************************/
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void HWIO_xfs_out16(xfs_u32 OutAddress, xfs_u16 Value) {
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/* write the contents of the I/O location and then synchronize the I/O
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* such that the I/O operation completes before proceeding on
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*/
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__asm__ volatile("sth %0,0(%1); eieio" ::"r"(Value), "b"(OutAddress));
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}
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/*****************************************************************************/
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void HWIO_xfs_out32(xfs_u32 OutAddress, xfs_u32 Value) {
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/* write the contents of the I/O location and then synchronize the I/O
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* such that the I/O operation completes before proceeding on
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*/
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__asm__ volatile("stw %0,0(%1); eieio" ::"r"(Value), "b"(OutAddress));
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}
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