72 lines
2.3 KiB
C
72 lines
2.3 KiB
C
/* $Id: //depot/dev/Foxhill/Xtensa/OS/include/xtensa/mpuasm.h#5 $ */
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/*
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* Copyright (c) 2016 Cadence Design Systems, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef _IDMAASM_H_
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#define _IDMAASM_H_
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#if XCHAL_HAVE_IDMA
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#include <xtensa/idma.h>
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#endif
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/*
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* Macro for restore IDMA regs
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*
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* Parameters:
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* a_save => address register containing pointer to IDMA save area
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* a_temp1, a_temp2, a_temp3. => address register temporaries
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*/
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// IDMA_REG_SETTINGS,
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// IDMA_REG_TIMEOUT,
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// IDMA_REG_DESC_START,
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// IDMA_REG_CONTROL,
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// IDMA_REG_USERPRIV,
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.macro _idma_restore a_save, a_temp1, a_temp2, a_temp3
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#if XCHAL_HAVE_IDMA
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l32i \a_temp1, \a_save, 0
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movi \a_temp3, idmareg_base
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movi \a_temp2, IDMA_REG_SETTINGS
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add \a_temp2, \a_temp2, \a_temp3
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wer \a_temp1, \a_temp2
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l32i \a_temp1, \a_save, 4
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movi \a_temp2, IDMA_REG_TIMEOUT
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add \a_temp2, \a_temp2, \a_temp3
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wer \a_temp1, \a_temp2
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l32i \a_temp1, \a_save, 8
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movi \a_temp2, IDMA_REG_DESC_START
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add \a_temp2, \a_temp2, \a_temp3
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wer \a_temp1, \a_temp2
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l32i \a_temp1, \a_save, 12
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movi \a_temp2, IDMA_REG_CONTROL
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add \a_temp2, \a_temp2, \a_temp3
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wer \a_temp1, \a_temp2
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l32i \a_temp1, \a_save, 16
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movi \a_temp2, IDMA_REG_USERPRIV
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add \a_temp2, \a_temp2, \a_temp3
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wer \a_temp1, \a_temp2
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#endif
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.endm
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#endif //_IDMAASM_H_
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