202 lines
4.6 KiB
C
202 lines
4.6 KiB
C
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// xos_regaccess.h - Access routines for various processor special registers.
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// Copyright (c) 2003-2015 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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#ifndef __REGACCESS_H__
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#define __REGACCESS_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "xos_types.h"
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#include <xtensa/config/core.h>
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#if defined (__XCC__)
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#if XCHAL_HAVE_CCOUNT
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#include <xtensa/tie/xt_timer.h>
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#endif
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#endif
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//-----------------------------------------------------------------------------
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// Read CCOUNT register.
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//-----------------------------------------------------------------------------
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static __inline__ uint32_t xos_get_ccount(void)
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{
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#if XCHAL_HAVE_CCOUNT
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#if defined (__XCC__)
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return XT_RSR_CCOUNT();
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#else
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uint32_t ccount;
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__asm__ __volatile__ ( "rsr %0, ccount" : "=a" (ccount) );
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return ccount;
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#endif
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#else
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return 0;
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#endif
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}
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//-----------------------------------------------------------------------------
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// Read CCOMPARE0
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//-----------------------------------------------------------------------------
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static __inline__ uint32_t xos_get_ccompare0(void)
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{
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#if XCHAL_HAVE_CCOUNT
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#if defined (__XCC__)
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return XT_RSR_CCOMPARE0();
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#else
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uint32_t ccompare0;
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__asm__ __volatile__ ( "rsr %0, ccompare0" : "=a" (ccompare0));
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return ccompare0;
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#endif
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#else
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return 0;
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#endif
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}
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//-----------------------------------------------------------------------------
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// Read CCOMPARE1
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//-----------------------------------------------------------------------------
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#if (XCHAL_NUM_TIMERS > 1)
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static __inline__ uint32_t xos_get_ccompare1(void)
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{
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#if defined (__XCC__)
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return XT_RSR_CCOMPARE1();
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#else
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uint32_t ccompare1;
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__asm__ __volatile__ ( "rsr %0, ccompare1" : "=a" (ccompare1));
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return ccompare1;
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#endif
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}
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#endif
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//-----------------------------------------------------------------------------
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// Read CCOMPARE2
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//-----------------------------------------------------------------------------
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#if (XCHAL_NUM_TIMERS > 2)
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static __inline__ uint32_t xos_get_ccompare2(void)
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{
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#if defined (__XCC__)
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return XT_RSR_CCOMPARE2();
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#else
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uint32_t ccompare2;
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__asm__ __volatile__ ( "rsr %0, ccompare2" : "=a" (ccompare2));
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return ccompare2;
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#endif
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}
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#endif
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//-----------------------------------------------------------------------------
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// Write CCOMPARE0
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//-----------------------------------------------------------------------------
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static __inline__ void xos_set_ccompare0(uint32_t val)
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{
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#if XCHAL_HAVE_CCOUNT
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#if defined (__XCC__)
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XT_WSR_CCOMPARE0(val);
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XT_ISYNC();
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#else
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__asm__ __volatile__ (
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"wsr %0, ccompare0\n"
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"isync"
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:
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: "a" (val)
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);
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#endif
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#else
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// Empty
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#endif
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}
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//-----------------------------------------------------------------------------
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// Write CCOMPARE1
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//-----------------------------------------------------------------------------
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#if (XCHAL_NUM_TIMERS > 1)
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static __inline__ void xos_set_ccompare1(uint32_t val)
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{
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#if defined (__XCC__)
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XT_WSR_CCOMPARE1(val);
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XT_ISYNC();
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#else
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__asm__ __volatile__ (
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"wsr %0, ccompare1\n"
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"isync"
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:
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: "a" (val)
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);
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#endif
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}
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#endif
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//-----------------------------------------------------------------------------
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// Write CCOMPARE2
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//-----------------------------------------------------------------------------
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#if (XCHAL_NUM_TIMERS > 2)
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static __inline__ void xos_set_ccompare2(uint32_t val)
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{
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#if defined (__XCC__)
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XT_WSR_CCOMPARE2(val);
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XT_ISYNC();
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#else
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__asm__ __volatile__ (
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"wsr %0, ccompare2\n"
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"isync"
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:
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: "a" (val)
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);
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#endif
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}
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif // __REGACCESS_H__
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