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minix/kernel/arch/i386/apic_asm.S
Tomas Hruby 9e12630d75 SMP - APs are fully enabled 
- apic_send_ipi() to send inter-processor interrupts (IPIs)

- APIC IPI schedule and halt handlers to signal x-cpu that a cpu shold
  reschedule or halt

- various little changes to let APs run

- no processes are scheduled at the APs and therefore they are idle
  except being interrupted by a timer time to time
2010-09-15 14:10:30 +00:00

423 lines
11 KiB
ArmAsm
Raw Blame History

#include "archconst.h"
#include "apic.h"
#include "sconst.h"
#include "apic_asm.h"
#include <machine/asm.h>
#define APIC_IRQ_HANDLER(irq) \
push $irq ;\
call _C_LABEL(irq_handle) /* intr_handle(irq) */ ;\
add $4, %esp ;
/*===========================================================================*/
/* interrupt handlers */
/* interrupt handlers for 386 32-bit protected mode */
/* APIC interrupt handlers for 386 32-bit protected mode */
/*===========================================================================*/
#define apic_hwint(irq) \
ENTRY(apic_hwint##irq) \
TEST_INT_IN_KERNEL(4, 0f) ;\
\
SAVE_PROCESS_CTX(0) ;\
push %ebp ;\
call _C_LABEL(context_stop) ;\
add $4, %esp ;\
movl $0, %ebp /* for stack trace */ ;\
APIC_IRQ_HANDLER(irq) ;\
jmp _C_LABEL(switch_to_user) ;\
\
0: \
pusha ;\
call _C_LABEL(context_stop_idle) ;\
APIC_IRQ_HANDLER(irq) ;\
CLEAR_IF(10*4(%esp)) ;\
popa ;\
iret ;
#define LAPIC_INTR_HANDLER(func) \
movl $func, %eax ;\
call *%eax /* call the actual handler */ ;\
mov _C_LABEL(lapic_eoi_addr), %eax /* the end of handler*/ ;\
movl $0, (%eax) ;
/*===========================================================================*/
/* handler of the local APIC interrupts */
/*===========================================================================*/
#define lapic_intr(func) \
TEST_INT_IN_KERNEL(4, 0f) ;\
\
SAVE_PROCESS_CTX(0) ;\
push %ebp ;\
call _C_LABEL(context_stop) ;\
add $4, %esp ;\
movl $0, %ebp /* for stack trace */ ;\
LAPIC_INTR_HANDLER(func) ;\
jmp _C_LABEL(switch_to_user) ;\
\
0: \
pusha ;\
call _C_LABEL(context_stop_idle) ;\
LAPIC_INTR_HANDLER(func) ;\
CLEAR_IF(10*4(%esp)) ;\
popa ;\
iret ;
/* apic timer tick handlers */
ENTRY(lapic_timer_int_handler)
lapic_intr(_C_LABEL(timer_int_handler))
#ifdef CONFIG_SMP
ENTRY(apic_ipi_sched_intr)
lapic_intr(_C_LABEL(apic_ipi_sched_handler))
ENTRY(apic_ipi_halt_intr)
lapic_intr(_C_LABEL(apic_ipi_halt_handler))
#endif /* CONFIG_SMP */
#ifdef CONFIG_APIC_DEBUG
.data
lapic_intr_dummy_handler_msg:
.ascii "UNHANDLED APIC interrupt vector %d\n"
.text
#define lapic_intr_dummy_handler(vect) \
pushl $vect; \
push $lapic_intr_dummy_handler_msg; \
call _C_LABEL(printf); \
1: jmp 1b; /* never return */
#define LAPIC_INTR_DUMMY_HANDLER(vect) \
.balign LAPIC_INTR_DUMMY_HANDLER_SIZE; \
_lapic_intr_dummy_handler_##vect: lapic_intr_dummy_handler(vect)
apic_hwint(0)
apic_hwint(1)
apic_hwint(2)
apic_hwint(3)
apic_hwint(4)
apic_hwint(5)
apic_hwint(6)
apic_hwint(7)
apic_hwint(8)
apic_hwint(9)
apic_hwint(10)
apic_hwint(11)
apic_hwint(12)
apic_hwint(13)
apic_hwint(14)
apic_hwint(15)
apic_hwint(16)
apic_hwint(17)
apic_hwint(18)
apic_hwint(19)
apic_hwint(20)
apic_hwint(21)
apic_hwint(22)
apic_hwint(23)
apic_hwint(24)
apic_hwint(25)
apic_hwint(26)
apic_hwint(27)
apic_hwint(28)
apic_hwint(29)
apic_hwint(30)
apic_hwint(31)
apic_hwint(32)
apic_hwint(33)
apic_hwint(34)
apic_hwint(35)
apic_hwint(36)
apic_hwint(37)
apic_hwint(38)
apic_hwint(39)
apic_hwint(40)
apic_hwint(41)
apic_hwint(42)
apic_hwint(43)
apic_hwint(44)
apic_hwint(45)
apic_hwint(46)
apic_hwint(47)
apic_hwint(48)
apic_hwint(49)
apic_hwint(50)
apic_hwint(51)
apic_hwint(52)
apic_hwint(53)
apic_hwint(54)
apic_hwint(55)
apic_hwint(56)
apic_hwint(57)
apic_hwint(58)
apic_hwint(59)
apic_hwint(60)
apic_hwint(61)
apic_hwint(62)
apic_hwint(63)
LABEL(lapic_intr_dummy_handles_start)
LAPIC_INTR_DUMMY_HANDLER(0)
LAPIC_INTR_DUMMY_HANDLER(1)
LAPIC_INTR_DUMMY_HANDLER(2)
LAPIC_INTR_DUMMY_HANDLER(3)
LAPIC_INTR_DUMMY_HANDLER(4)
LAPIC_INTR_DUMMY_HANDLER(5)
LAPIC_INTR_DUMMY_HANDLER(6)
LAPIC_INTR_DUMMY_HANDLER(7)
LAPIC_INTR_DUMMY_HANDLER(8)
LAPIC_INTR_DUMMY_HANDLER(9)
LAPIC_INTR_DUMMY_HANDLER(10)
LAPIC_INTR_DUMMY_HANDLER(11)
LAPIC_INTR_DUMMY_HANDLER(12)
LAPIC_INTR_DUMMY_HANDLER(13)
LAPIC_INTR_DUMMY_HANDLER(14)
LAPIC_INTR_DUMMY_HANDLER(15)
LAPIC_INTR_DUMMY_HANDLER(16)
LAPIC_INTR_DUMMY_HANDLER(17)
LAPIC_INTR_DUMMY_HANDLER(18)
LAPIC_INTR_DUMMY_HANDLER(19)
LAPIC_INTR_DUMMY_HANDLER(20)
LAPIC_INTR_DUMMY_HANDLER(21)
LAPIC_INTR_DUMMY_HANDLER(22)
LAPIC_INTR_DUMMY_HANDLER(23)
LAPIC_INTR_DUMMY_HANDLER(24)
LAPIC_INTR_DUMMY_HANDLER(25)
LAPIC_INTR_DUMMY_HANDLER(26)
LAPIC_INTR_DUMMY_HANDLER(27)
LAPIC_INTR_DUMMY_HANDLER(28)
LAPIC_INTR_DUMMY_HANDLER(29)
LAPIC_INTR_DUMMY_HANDLER(30)
LAPIC_INTR_DUMMY_HANDLER(31)
LAPIC_INTR_DUMMY_HANDLER(32)
LAPIC_INTR_DUMMY_HANDLER(33)
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LAPIC_INTR_DUMMY_HANDLER(52)
LAPIC_INTR_DUMMY_HANDLER(53)
LAPIC_INTR_DUMMY_HANDLER(54)
LAPIC_INTR_DUMMY_HANDLER(55)
LAPIC_INTR_DUMMY_HANDLER(56)
LAPIC_INTR_DUMMY_HANDLER(57)
LAPIC_INTR_DUMMY_HANDLER(58)
LAPIC_INTR_DUMMY_HANDLER(59)
LAPIC_INTR_DUMMY_HANDLER(60)
LAPIC_INTR_DUMMY_HANDLER(61)
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LAPIC_INTR_DUMMY_HANDLER(64)
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LAPIC_INTR_DUMMY_HANDLER(222)
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LAPIC_INTR_DUMMY_HANDLER(241)
LAPIC_INTR_DUMMY_HANDLER(242)
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LAPIC_INTR_DUMMY_HANDLER(244)
LAPIC_INTR_DUMMY_HANDLER(245)
LAPIC_INTR_DUMMY_HANDLER(246)
LAPIC_INTR_DUMMY_HANDLER(247)
LAPIC_INTR_DUMMY_HANDLER(248)
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LAPIC_INTR_DUMMY_HANDLER(250)
LAPIC_INTR_DUMMY_HANDLER(251)
LAPIC_INTR_DUMMY_HANDLER(252)
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LAPIC_INTR_DUMMY_HANDLER(255)
LABEL(lapic_intr_dummy_handles_end)
#endif /* CONFIG_APIC_DEBUG */
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