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#ifndef CYGONCE_HAL_HAL_INTR_H
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#define CYGONCE_HAL_HAL_INTR_H
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//==========================================================================
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//
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// hal_intr.h
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//
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// m68k Interrupt and clock support
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//
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//==========================================================================
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//####ECOSGPLCOPYRIGHTBEGIN####
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// -------------------------------------------
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// This file is part of eCos, the Embedded Configurable Operating System.
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// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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//
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// eCos is free software; you can redistribute it and/or modify it under
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// the terms of the GNU General Public License as published by the Free
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// Software Foundation; either version 2 or (at your option) any later version.
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//
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// eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// for more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with eCos; if not, write to the Free Software Foundation, Inc.,
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// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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//
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// As a special exception, if other files instantiate templates or use macros
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// or inline functions from this file, or you compile this file and link it
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// with other works to produce a work based on this file, this file does not
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// by itself cause the resulting work to be covered by the GNU General Public
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// License. However the source code for this file must still be made available
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// in accordance with section (3) of the GNU General Public License.
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//
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// This exception does not invalidate any other reasons why a work based on
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// this file might be covered by the GNU General Public License.
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//
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// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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// at http://sources.redhat.com/ecos/ecos-license/
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// -------------------------------------------
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//####ECOSGPLCOPYRIGHTEND####
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//==========================================================================
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#include <pkgconf/hal.h>
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#include <cyg/infra/cyg_type.h>
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#include <cyg/hal/hal_arch.h>
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#include <cyg/hal/var_intr.h>
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//--------------------------------------------------------------------------
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// m68k exception vectors. These correspond to VSRs and are the values
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// to use for HAL_VSR_GET/SET
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#define CYGNUM_HAL_VECTOR_SSP 0
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#define CYGNUM_HAL_VECTOR_RESET 1
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#define CYGNUM_HAL_VECTOR_BUSERR 2
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#define CYGNUM_HAL_VECTOR_ADDERR 3
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#define CYGNUM_HAL_VECTOR_ILLINST 4
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#define CYGNUM_HAL_VECTOR_ZERODIV 5
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#define CYGNUM_HAL_VECTOR_CHKINST 6
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#define CYGNUM_HAL_VECTOR_TRAPVINST 7
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#define CYGNUM_HAL_VECTOR_PRIVVIOLATION 8
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#define CYGNUM_HAL_VECTOR_TRACE 9
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#define CYGNUM_HAL_VECTOR_L1010 10
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#define CYGNUM_HAL_VECTOR_L1111 11
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#define CYGNUM_HAL_VECTOR_UNINITINT 15
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#define CYGNUM_HAL_VECTOR_SPURINT 24
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#define CYGNUM_HAL_VECTOR_AUTOVEC1 25
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#define CYGNUM_HAL_VECTOR_AUTOVEC2 26
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#define CYGNUM_HAL_VECTOR_AUTOVEC3 27
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#define CYGNUM_HAL_VECTOR_AUTOVEC4 28
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#define CYGNUM_HAL_VECTOR_AUTOVEC5 29
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#define CYGNUM_HAL_VECTOR_AUTOVEC6 30
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#define CYGNUM_HAL_VECTOR_AUTOVEC7 31
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#define CYGNUM_HAL_VECTOR_NMI CYGNUM_HAL_VECTOR_AUTOVEC7
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#define CYGNUM_HAL_VECTOR_TRAPFIRST 32
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#define CYGNUM_HAL_VECTOR_NUMTRAPS 16
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#define CYGNUM_HAL_VECTOR_TRAPLAST (CYGNUM_HAL_VECTOR_TRAPFIRST+CYGNUM_HAL_VECTOR_NUMTRAPS-1)
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#define CYGNUM_HAL_VECTOR_INTRFIRST 64
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#define CYGNUM_HAL_VECTOR_NUMINTRS 192
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#define CYGNUM_HAL_VECTOR_INTRLAST (CYGNUM_HAL_VECTOR_INTRFIRST+CYGNUM_HAL_VECTOR_NUMINTRS-1)
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#define CYGNUM_HAL_VSR_MIN CYGNUM_HAL_VECTOR_SSP
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#define CYGNUM_HAL_VSR_MAX CYGNUM_HAL_VECTOR_INTRLAST
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#define CYGNUM_HAL_VSR_COUNT (CYGNUM_HAL_VSR_MAX+1)
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//--------------------------------------------------------------------------
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// Interrupt vectors.
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#ifndef CYGNUM_HAL_ISR_MAX
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#define CYGNUM_HAL_ISR_MIN 0
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#define CYGNUM_HAL_ISR_MAX 255
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#define CYGNUM_HAL_ISR_COUNT (7+CYGNUM_HAL_VECTOR_NUMINTRS)
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#endif /* CYGNUM_HAL_ISR_MAX */
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#ifndef CYGNUM_HAL_EXCEPTION_COUNT
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#define CYGNUM_HAL_EXCEPTION_MIN CYGNUM_HAL_VECTOR_BUSERR
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#define CYGNUM_HAL_EXCEPTION_MAX CYGNUM_HAL_VECTOR_SPURINT
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#define CYGNUM_HAL_EXCEPTION_COUNT ((CYGNUM_HAL_EXCEPTION_MAX-CYGNUM_HAL_EXCEPTION_MIN)+1)
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#endif /* CYGNUM_HAL_EXCEPTION_COUNT */
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//--------------------------------------------------------------------------
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// Static data used by HAL
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// ISR tables
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externC volatile CYG_ADDRESS cyg_hal_interrupt_handlers[CYGNUM_HAL_ISR_COUNT];
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externC volatile CYG_ADDRWORD cyg_hal_interrupt_data[CYGNUM_HAL_ISR_COUNT];
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externC volatile CYG_ADDRESS cyg_hal_interrupt_objects[CYGNUM_HAL_ISR_COUNT];
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// VSR table
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externC volatile CYG_ADDRESS cyg_hal_vsr_table[CYGNUM_HAL_VSR_COUNT];
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//---------------------------------------------------------------------------
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// Translate a vector number into an ISR table index.
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#define HAL_TRANSLATE_VECTOR(_vector_,_index_) \
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CYG_MACRO_START \
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switch ((_vector_)) \
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{ \
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case CYGNUM_HAL_VECTOR_AUTOVEC1 ... CYGNUM_HAL_VECTOR_AUTOVEC7: \
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(_index_) = ((_vector_) - CYGNUM_HAL_VECTOR_AUTOVEC1); \
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break; \
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case CYGNUM_HAL_VECTOR_INTRFIRST ... CYGNUM_HAL_VECTOR_INTRLAST: \
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(_index_) = ((_vector_) \
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- CYGNUM_HAL_VECTOR_INTRFIRST \
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+ (CYGNUM_HAL_VECTOR_AUTOVEC7 \
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- CYGNUM_HAL_VECTOR_AUTOVEC1 \
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+ 1)); \
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break; \
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default: \
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CYG_FAIL("Unknown Interrupt!!!"); \
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(_index_) = (typeof(_index_))-1; \
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} \
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CYG_MACRO_END
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//--------------------------------------------------------------------------
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// Interrupt state storage
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typedef cyg_uint16 CYG_INTERRUPT_STATE;
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//---------------------------------------------------------------------------
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// Interrupt and VSR attachment macros
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externC cyg_uint32 hal_default_isr(CYG_ADDRWORD vector, CYG_ADDRWORD data);
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externC void hal_default_exception_handler(CYG_WORD vector,
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HAL_SavedRegisters *regs);
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#define HAL_INTERRUPT_IN_USE( _vector_, _state_) \
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CYG_MACRO_START \
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cyg_uint32 _index_; \
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HAL_TRANSLATE_VECTOR ((_vector_), _index_); \
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\
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if (cyg_hal_interrupt_handlers[_index_] \
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==(CYG_ADDRESS)&hal_default_isr) \
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(_state_) = 0; \
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else \
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(_state_) = 1; \
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CYG_MACRO_END
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#define HAL_INTERRUPT_ATTACH( _vector_, _isr_, _data_, _object_ ) \
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CYG_MACRO_START \
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cyg_uint32 _index_; \
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HAL_TRANSLATE_VECTOR((_vector_), _index_); \
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\
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if (cyg_hal_interrupt_handlers[_index_] \
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==(CYG_ADDRESS)&hal_default_isr) \
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{ \
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cyg_hal_interrupt_handlers[_index_] = (CYG_ADDRESS)(_isr_); \
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cyg_hal_interrupt_data[_index_] = (CYG_ADDRWORD)(_data_); \
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cyg_hal_interrupt_objects[_index_] = (CYG_ADDRESS)(_object_); \
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} \
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CYG_MACRO_END
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#define HAL_INTERRUPT_DETACH( _vector_, _isr_ ) \
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CYG_MACRO_START \
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cyg_uint32 _index_; \
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HAL_INTERRUPT_MASK(_vector_); \
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HAL_TRANSLATE_VECTOR((_vector_), _index_); \
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if (cyg_hal_interrupt_handlers[_index_] \
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== (CYG_ADDRESS)(_isr_)) \
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{ \
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cyg_hal_interrupt_handlers[_index_] = \
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(CYG_ADDRESS)&hal_default_isr; \
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cyg_hal_interrupt_data[_index_] = 0; \
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cyg_hal_interrupt_objects[_index_] = 0; \
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} \
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CYG_MACRO_END
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#define HAL_VSR_GET( _vector_, _pvsr_ ) \
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*((CYG_ADDRESS *)(_pvsr_)) = cyg_hal_vsr_table[(_vector_)];
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#define HAL_VSR_SET( _vector_, _vsr_, _poldvsr_ ) \
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CYG_MACRO_START \
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if( (_poldvsr_) != NULL ) \
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*(CYG_ADDRESS *)(_poldvsr_) = cyg_hal_vsr_table[(_vector_)]; \
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cyg_hal_vsr_table[(_vector_)] = (CYG_ADDRESS)(_vsr_); \
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CYG_MACRO_END
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//--------------------------------------------------------------------------
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// Interrupt control macros
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// The following interrupt control macros are the default for the 68k
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// architecture. Some architectures will override these definitions by
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// defining them in their var_intr.h file. Some architectures support
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// instructions like andi.w #xxxx,%sr but others (Coldfire) do not.
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// Architectures that support these other instructions will want to define
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// their own macros.
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#define HAL_M68K_SET_SR(__newsr__) \
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CYG_MACRO_START \
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asm volatile ("move.w %0,%%sr\n" \
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: \
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: "g" ((CYG_INTERRUPT_STATE)(__newsr__))); \
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CYG_MACRO_END
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#ifndef HAL_ENABLE_INTERRUPTS
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#define HAL_ENABLE_INTERRUPTS() \
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CYG_MACRO_START \
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CYG_INTERRUPT_STATE _msk_; \
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HAL_QUERY_INTERRUPTS(_msk_); \
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HAL_M68K_SET_SR((_msk_ & (CYG_INTERRUPT_STATE)0xf8ff)); \
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CYG_MACRO_END
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#endif // HAL_ENABLE_INTERRUPTS
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#ifndef HAL_DISABLE_INTERRUPTS
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#define HAL_DISABLE_INTERRUPTS(_old_) \
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CYG_MACRO_START \
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HAL_QUERY_INTERRUPTS(_old_); \
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HAL_M68K_SET_SR((_old_ | (CYG_INTERRUPT_STATE)0x0700)); \
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CYG_MACRO_END
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#endif //HAL_DISABLE_INTERRUPTS
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#define HAL_RESTORE_INTERRUPTS(_prev_) \
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CYG_MACRO_START \
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CYG_INTERRUPT_STATE _msk_; \
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HAL_QUERY_INTERRUPTS(_msk_); \
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_msk_ &= (CYG_INTERRUPT_STATE)0xf8ff; \
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_msk_ |= (((CYG_INTERRUPT_STATE)(_prev_)) \
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& (CYG_INTERRUPT_STATE)0x0700); \
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asm volatile ("move.w %0,%%sr\n" \
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: \
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: "g" (_msk_)); \
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CYG_MACRO_END
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// Use the extra assignment to avoid warnings.
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// The compiler should optimize it out.
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#define HAL_QUERY_INTERRUPTS(__oldmask__) \
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CYG_MACRO_START \
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CYG_INTERRUPT_STATE _omsk_ = (CYG_INTERRUPT_STATE)(__oldmask__); \
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asm volatile ("move.w %%sr,%0\n" \
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: "=g" (_omsk_) \
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: ); \
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(__oldmask__) = (typeof(__oldmask__))_omsk_; \
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CYG_MACRO_END
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//---------------------------------------------------------------------------
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#endif // ifndef CYGONCE_HAL_HAL_INTR_H
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