diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/m68k/atari/ataints.c | 12 | ||||
| -rw-r--r-- | arch/m68k/kernel/entry.S | 84 | ||||
| -rw-r--r-- | arch/m68k/kernel/ints.c | 21 | ||||
| -rw-r--r-- | arch/m68k/kernel/traps.c | 55 |
4 files changed, 64 insertions, 108 deletions
diff --git a/arch/m68k/atari/ataints.c b/arch/m68k/atari/ataints.c index 076f47917842..bb54741dd6cd 100644 --- a/arch/m68k/atari/ataints.c +++ b/arch/m68k/atari/ataints.c @@ -314,7 +314,7 @@ __ALIGN_STR "\n\t" "rte"); /* Defined in entry.S; only increments 'num_spurious' */ -asmlinkage void bad_interrupt(void); +asmlinkage void bad_inthandler(void); extern void atari_microwire_cmd( int cmd ); @@ -337,7 +337,7 @@ void __init atari_init_IRQ(void) /* initialize the vector table */ for (i = 0; i < NUM_INT_SOURCES; ++i) { - vectors[IRQ_SOURCE_TO_VECTOR(i)] = bad_interrupt; + vectors[IRQ_SOURCE_TO_VECTOR(i)] = bad_inthandler; } /* Initialize the MFP(s) */ @@ -461,7 +461,7 @@ int atari_request_irq(unsigned int irq, irqreturn_t (*handler)(int, void *, stru return -EINVAL; } - if (vectors[vector] == bad_interrupt) { + if (vectors[vector] == bad_inthandler) { /* int has no handler yet */ irq_handler[irq].handler = handler; irq_handler[irq].dev_id = dev_id; @@ -528,7 +528,7 @@ void atari_free_irq(unsigned int irq, void *dev_id) } vector = IRQ_SOURCE_TO_VECTOR(irq); - if (vectors[vector] == bad_interrupt) + if (vectors[vector] == bad_inthandler) goto not_found; local_irq_save(flags); @@ -542,7 +542,7 @@ void atari_free_irq(unsigned int irq, void *dev_id) irq_handler[irq].handler = NULL; irq_handler[irq].dev_id = NULL; irq_param[irq].devname = NULL; - vectors[vector] = bad_interrupt; + vectors[vector] = bad_inthandler; /* If MFP int, also disable it */ atari_disable_irq(irq); atari_turnoff_irq(irq); @@ -617,7 +617,7 @@ int show_atari_interrupts(struct seq_file *p, void *v) int i; for (i = 0; i < NUM_INT_SOURCES; ++i) { - if (vectors[IRQ_SOURCE_TO_VECTOR(i)] == bad_interrupt) + if (vectors[IRQ_SOURCE_TO_VECTOR(i)] == bad_inthandler) continue; if (i < STMFP_SOURCE_BASE) seq_printf(p, "auto %2d: %10u ", diff --git a/arch/m68k/kernel/entry.S b/arch/m68k/kernel/entry.S index 522079f8c2ba..1fb88f3311de 100644 --- a/arch/m68k/kernel/entry.S +++ b/arch/m68k/kernel/entry.S @@ -45,7 +45,7 @@ #include <asm/asm-offsets.h> .globl system_call, buserr, trap, resume -.globl inthandler, sys_call_table +.globl sys_call_table .globl sys_fork, sys_clone, sys_vfork .globl ret_from_interrupt, bad_interrupt @@ -191,44 +191,15 @@ do_delayed_trace: jbra resume_userspace -#if 0 -#ifdef CONFIG_AMIGA -ami_inthandler: - addql #1,irq_stat+CPUSTAT_LOCAL_IRQ_COUNT - SAVE_ALL_INT - GET_CURRENT(%d0) - - bfextu %sp@(PT_VECTOR){#4,#12},%d0 - movel %d0,%a0 - addql #1,%a0@(kstat+STAT_IRQ-VECOFF(VEC_SPUR)) - movel %a0@(autoirq_list-VECOFF(VEC_SPUR)),%a0 - -| amiga vector int handler get the req mask instead of irq vector - lea CUSTOMBASE,%a1 - movew %a1@(C_INTREQR),%d0 - andw %a1@(C_INTENAR),%d0 - -| prepare stack (push frame pointer, dev_id & req mask) - pea %sp@ - movel %a0@(IRQ_DEVID),%sp@- - movel %d0,%sp@- - pea %pc@(ret_from_interrupt:w) - jbra @(IRQ_HANDLER,%a0)@(0) - -ENTRY(nmi_handler) - rte -#endif -#endif +/* This is the main interrupt handler for autovector interrupts */ -/* -** This is the main interrupt handler, responsible for calling process_int() -*/ -inthandler: +ENTRY(auto_inthandler) SAVE_ALL_INT GET_CURRENT(%d0) addqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1) | put exception # in d0 - bfextu %sp@(PT_VECTOR){#4,#10},%d0 + bfextu %sp@(PT_VECTOR){#4,#10},%d0 + subw #VEC_SPUR,%d0 movel %sp,%sp@- movel %d0,%sp@- | put vector # on stack @@ -241,15 +212,16 @@ inthandler: jbra 3f 1: #endif - jbsr process_int | process the IRQ + jsr m68k_handle_int | process the IRQ 3: addql #8,%sp | pop parameters off stack ret_from_interrupt: subqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1) - jeq 1f -2: - RESTORE_ALL -1: + jeq ret_from_last_interrupt +2: RESTORE_ALL + + ALIGN +ret_from_last_interrupt: moveq #(~ALLOWINT>>8)&0xff,%d0 andb %sp@(PT_SR),%d0 jne 2b @@ -260,12 +232,40 @@ ret_from_interrupt: pea ret_from_exception jra do_softirq +/* Handler for user defined interrupt vectors */ + +ENTRY(mach_inthandler) + SAVE_ALL_INT + GET_CURRENT(%d0) + addqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1) + | put exception # in d0 + bfextu %sp@(PT_VECTOR){#4,#10},%d0 + + movel %sp,%sp@- + movel %d0,%sp@- | put vector # on stack + movel mach_process_int,%a0 + jsr %a0@ | process the IRQ + addql #8,%sp | pop parameters off stack + + subqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1) + jeq ret_from_last_interrupt + RESTORE_ALL /* Handler for uninitialized and spurious interrupts */ -bad_interrupt: - addql #1,num_spurious - rte +ENTRY(bad_inthandler) + SAVE_ALL_INT + GET_CURRENT(%d0) + addqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1) + + movel %sp,%sp@- + jsr handle_badint + addql #4,%sp + + subqb #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1) + jeq ret_from_last_interrupt + RESTORE_ALL + ENTRY(sys_fork) SAVE_SWITCH_STACK diff --git a/arch/m68k/kernel/ints.c b/arch/m68k/kernel/ints.c index 4b85514792e7..895a56d69eba 100644 --- a/arch/m68k/kernel/ints.c +++ b/arch/m68k/kernel/ints.c @@ -248,19 +248,16 @@ static void dummy_free_irq(unsigned int irq, void *dev_id) printk("calling uninitialized disable_irq()\n"); } -asmlinkage void process_int(unsigned long vec, struct pt_regs *fp) +asmlinkage void m68k_handle_int(unsigned int irq, struct pt_regs *regs) { - if (vec >= VEC_INT1 && vec <= VEC_INT7 && !MACH_IS_BVME6000) { - vec -= VEC_SPUR; - kstat_cpu(0).irqs[vec]++; - irq_list[vec].handler(vec, irq_list[vec].dev_id, fp); - } else { - if (mach_process_int) - mach_process_int(vec, fp); - else - panic("Can't process interrupt vector %ld\n", vec); - return; - } + kstat_cpu(0).irqs[irq]++; + irq_list[irq].handler(irq, irq_list[irq].dev_id, regs); +} + +asmlinkage void handle_badint(struct pt_regs *regs) +{ + kstat_cpu(0).irqs[0]++; + printk("unexpected interrupt from %u\n", regs->vector); } int show_interrupts(struct seq_file *p, void *v) diff --git a/arch/m68k/kernel/traps.c b/arch/m68k/kernel/traps.c index 9adf378f8f1e..b19b951fd3e7 100644 --- a/arch/m68k/kernel/traps.c +++ b/arch/m68k/kernel/traps.c @@ -45,7 +45,6 @@ asmlinkage void system_call(void); asmlinkage void buserr(void); asmlinkage void trap(void); -asmlinkage void inthandler(void); asmlinkage void nmihandler(void); #ifdef CONFIG_M68KFPU_EMU asmlinkage void fpu_emu(void); @@ -53,51 +52,7 @@ asmlinkage void fpu_emu(void); e_vector vectors[256] = { [VEC_BUSERR] = buserr, - [VEC_ADDRERR] = trap, - [VEC_ILLEGAL] = trap, - [VEC_ZERODIV] = trap, - [VEC_CHK] = trap, - [VEC_TRAP] = trap, - [VEC_PRIV] = trap, - [VEC_TRACE] = trap, - [VEC_LINE10] = trap, - [VEC_LINE11] = trap, - [VEC_RESV12] = trap, - [VEC_COPROC] = trap, - [VEC_FORMAT] = trap, - [VEC_UNINT] = trap, - [VEC_RESV16] = trap, - [VEC_RESV17] = trap, - [VEC_RESV18] = trap, - [VEC_RESV19] = trap, - [VEC_RESV20] = trap, - [VEC_RESV21] = trap, - [VEC_RESV22] = trap, - [VEC_RESV23] = trap, - [VEC_SPUR] = inthandler, - [VEC_INT1] = inthandler, - [VEC_INT2] = inthandler, - [VEC_INT3] = inthandler, - [VEC_INT4] = inthandler, - [VEC_INT5] = inthandler, - [VEC_INT6] = inthandler, - [VEC_INT7] = inthandler, [VEC_SYS] = system_call, - [VEC_TRAP1] = trap, - [VEC_TRAP2] = trap, - [VEC_TRAP3] = trap, - [VEC_TRAP4] = trap, - [VEC_TRAP5] = trap, - [VEC_TRAP6] = trap, - [VEC_TRAP7] = trap, - [VEC_TRAP8] = trap, - [VEC_TRAP9] = trap, - [VEC_TRAP10] = trap, - [VEC_TRAP11] = trap, - [VEC_TRAP12] = trap, - [VEC_TRAP13] = trap, - [VEC_TRAP14] = trap, - [VEC_TRAP15] = trap, }; /* nmi handler for the Amiga */ @@ -132,12 +87,16 @@ void __init trap_init (void) { int i; - for (i = 48; i < 64; i++) + vectors[VEC_SPUR] = bad_inthandler; + for (i = VEC_INT1; i <= VEC_INT7; i++) + vectors[i] = auto_inthandler; + + for (i = 0; i < VEC_USER; i++) if (!vectors[i]) vectors[i] = trap; - for (i = 64; i < 256; i++) - vectors[i] = inthandler; + for (i = VEC_USER; i < 256; i++) + vectors[i] = mach_inthandler; #ifdef CONFIG_M68KFPU_EMU if (FPU_IS_EMU) |