146 lines
5.1 KiB
ArmAsm
146 lines
5.1 KiB
ArmAsm
/* driver_static_irq_stubs.s - interrupt stubs */
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/*
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* Copyright (c) 2012-2015, Wind River Systems, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1) Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2) Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3) Neither the name of Wind River Systems nor the names of its contributors
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* may be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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DESCRIPTION
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This module contains the static interrupt stubs for the various drivers employed
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by x86 BSPs.
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*/
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#define _ASMLANGUAGE
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#ifndef CONFIG_DYNAMIC_INT_STUBS
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#include <nanokernel/x86/asm.h>
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#include <drivers/ioapic.h>
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#include <drivers/loapic.h>
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#include <drivers/pic.h>
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#include <drivers/system_timer.h>
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/* exports (internal APIs) */
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#if defined(CONFIG_LOAPIC_TIMER)
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GTEXT(_loApicTimerIntStub)
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#endif
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#if defined(CONFIG_HPET_TIMER)
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GTEXT(_hpetIntStub)
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#endif
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#if defined (CONFIG_PIC)
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GTEXT(_masterStrayIntStub)
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GTEXT(_slaveStrayIntStub)
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#endif
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#if defined (CONFIG_PIT)
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GTEXT(_i8253IntStub)
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#endif
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/* externs (internal APIs) */
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GTEXT(_IntEnt)
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GTEXT(_IntExit)
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#if defined(CONFIG_LOAPIC_TIMER)
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SECTION_FUNC (TEXT, _loApicTimerIntStub)
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call _IntEnt /* Inform kernel interrupt has begun */
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pushl $0 /* Push dummy parameter */
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call _timer_int_handler /* Call actual interrupt handler */
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call _loapic_eoi /* Inform loapic interrupt is done */
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addl $4, %esp /* Clean-up stack from push above */
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jmp _IntExit /* Inform kernel interrupt is done */
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#endif /* CONFIG_LOAPIC_TIMER */
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#if defined(CONFIG_HPET_TIMER)
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SECTION_FUNC(TEXT, _hpetIntStub)
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call _IntEnt /* Inform kernel interrupt has begun */
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pushl $0 /* Push dummy parameter */
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call _timer_int_handler /* Call actual interrupt handler */
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call _ioapic_eoi /* Inform ioapic interrupt is done */
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addl $4, %esp /* Clean-up stack from push above */
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jmp _IntExit /* Inform kernel interrupt is done */
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#endif /* CONFIG_HPET_TIMER */
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#if defined(CONFIG_PIC)
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SECTION_FUNC(TEXT, _masterStrayIntStub)
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/*
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* Handle possible spurious (stray) interrupts on IRQ 7. Since on this
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* particular BSP, no device is hooked up to IRQ 7, a C level ISR is
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* not called as the call to the BOI routine will not return.
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*/
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call _IntEnt /* Inform kernel interrupt has begun */
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call _i8259_boi_master /* Call the BOI routine (won't return) */
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/*
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* If an actual device was installed on IRQ 7, then the BOI may return,
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* indicating a real interrupt was asserted on IRQ 7.
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* The following code should be invoked in this case to invoke the ISR:
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*
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* pushl $param /+ Push argument to ISR +/
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* call ISR /+ Call 'C' level ISR +/
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* addl $4, %esp /+ pop arg to ISR +/
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* jmp _IntExit /+ Inform kernel interrupt is done +/
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*/
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SECTION_FUNC(TEXT, _slaveStrayIntStub)
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/*
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* Handle possible spurious (stray) interrupts on IRQ 15 (slave PIC
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* IRQ 7). Since on this particular BSP, no device is hooked up to
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* IRQ 15, a C level ISR is not called as the call the BOI routine
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* will not return.
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*/
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call _IntEnt /* Inform kernel interrupt has begun */
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call _i8259_boi_slave /* Call the BOI routine (won't return) */
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/*
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* If an actual device was installed on IRQ 15, then the BOI may return,
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* indicating a real interrupt was asserted on IRQ 15.
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* The following code should be invoked in this case to invoke the ISR:
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*
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* pushl $param /+ Push argument to ISR +/
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* call ISR /+ Call 'C' level ISR +/
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* addl $4, %esp /+ pop arg to ISR +/
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* jmp _IntExit /+ Inform kernel interrupt is done +/
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*/
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#endif /* CONFIG_PIC */
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#if defined(CONFIG_PIT)
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SECTION_FUNC(TEXT, _i8253IntStub)
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call _IntEnt /* Inform kernel interrupt has begun */
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pushl $0 /* Push dummy parameter */
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call _timer_int_handler /* Call actual interrupt handler */
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call _i8259_eoi_master /* Inform the PIC interrupt is done */
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addl $4, %esp /* Clean-up stack from push above */
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jmp _IntExit /* Inform kernel interrupt is done */
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#endif /* CONFIG_PIT */
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#endif /* !CONFIG_DYNAMIC_INT_STUBS */
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