Changes in kernel/arch/sparc64/src/trap/interrupt.c [6cd9aa6:95c4776] in mainline
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kernel/arch/sparc64/src/trap/interrupt.c
r6cd9aa6 r95c4776 1 1 /* 2 2 * Copyright (c) 2005 Jakub Jermar 3 * Copyright (c) 2009 Pavel Rimsky 3 4 * All rights reserved. 4 5 * … … 34 35 35 36 #include <arch/interrupt.h> 37 #include <arch/trap/interrupt.h> 36 38 #include <arch/sparc64.h> 37 #include <arch/trap/interrupt.h>38 39 #include <interrupt.h> 39 40 #include <ddi/irq.h> … … 60 61 exc_register(n - 1, name, f); 61 62 } 62 63 /** Process hardware interrupt.64 *65 * @param n Ignored.66 * @param istate Ignored.67 */68 void interrupt(int n, istate_t *istate)69 {70 uint64_t status;71 uint64_t intrcv;72 uint64_t data0;73 status = asi_u64_read(ASI_INTR_DISPATCH_STATUS, 0);74 if (status & (!INTR_DISPATCH_STATUS_BUSY))75 panic("Interrupt Dispatch Status busy bit not set.");76 77 intrcv = asi_u64_read(ASI_INTR_RECEIVE, 0);78 #if defined (US)79 data0 = asi_u64_read(ASI_INTR_R, ASI_UDB_INTR_R_DATA_0);80 #elif defined (US3)81 data0 = asi_u64_read(ASI_INTR_R, VA_INTR_R_DATA_0);82 #endif83 84 irq_t *irq = irq_dispatch_and_lock(data0);85 if (irq) {86 /*87 * The IRQ handler was found.88 */89 irq->handler(irq);90 /*91 * See if there is a clear-interrupt-routine and call it.92 */93 if (irq->cir) {94 irq->cir(irq->cir_arg, irq->inr);95 }96 spinlock_unlock(&irq->lock);97 } else if (data0 > config.base) {98 /*99 * This is a cross-call.100 * data0 contains address of the kernel function.101 * We call the function only after we verify102 * it is one of the supported ones.103 */104 #ifdef CONFIG_SMP105 if (data0 == (uintptr_t) tlb_shootdown_ipi_recv) {106 tlb_shootdown_ipi_recv();107 }108 #endif109 } else {110 /*111 * Spurious interrupt.112 */113 #ifdef CONFIG_DEBUG114 printf("cpu%u: spurious interrupt (intrcv=%#" PRIx64115 ", data0=%#" PRIx64 ")\n", CPU->id, intrcv, data0);116 #endif117 }118 119 membar();120 asi_u64_write(ASI_INTR_RECEIVE, 0, 0);121 }122 123 63 /** @} 124 64 */
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