{ NULL }
};
-static const u32 interrupt_msr_mask[16] = {
- [BOOKE_INTERRUPT_CRITICAL] = MSR_ME,
- [BOOKE_INTERRUPT_MACHINE_CHECK] = 0,
- [BOOKE_INTERRUPT_DATA_STORAGE] = MSR_CE|MSR_ME|MSR_DE,
- [BOOKE_INTERRUPT_INST_STORAGE] = MSR_CE|MSR_ME|MSR_DE,
- [BOOKE_INTERRUPT_EXTERNAL] = MSR_CE|MSR_ME|MSR_DE,
- [BOOKE_INTERRUPT_ALIGNMENT] = MSR_CE|MSR_ME|MSR_DE,
- [BOOKE_INTERRUPT_PROGRAM] = MSR_CE|MSR_ME|MSR_DE,
- [BOOKE_INTERRUPT_FP_UNAVAIL] = MSR_CE|MSR_ME|MSR_DE,
- [BOOKE_INTERRUPT_SYSCALL] = MSR_CE|MSR_ME|MSR_DE,
- [BOOKE_INTERRUPT_AP_UNAVAIL] = MSR_CE|MSR_ME|MSR_DE,
- [BOOKE_INTERRUPT_DECREMENTER] = MSR_CE|MSR_ME|MSR_DE,
- [BOOKE_INTERRUPT_FIT] = MSR_CE|MSR_ME|MSR_DE,
- [BOOKE_INTERRUPT_WATCHDOG] = MSR_ME,
- [BOOKE_INTERRUPT_DTLB_MISS] = MSR_CE|MSR_ME|MSR_DE,
- [BOOKE_INTERRUPT_ITLB_MISS] = MSR_CE|MSR_ME|MSR_DE,
- [BOOKE_INTERRUPT_DEBUG] = MSR_ME,
-};
-
-const unsigned char exception_priority[] = {
- [BOOKE_INTERRUPT_DATA_STORAGE] = 0,
- [BOOKE_INTERRUPT_INST_STORAGE] = 1,
- [BOOKE_INTERRUPT_ALIGNMENT] = 2,
- [BOOKE_INTERRUPT_PROGRAM] = 3,
- [BOOKE_INTERRUPT_FP_UNAVAIL] = 4,
- [BOOKE_INTERRUPT_SYSCALL] = 5,
- [BOOKE_INTERRUPT_AP_UNAVAIL] = 6,
- [BOOKE_INTERRUPT_DTLB_MISS] = 7,
- [BOOKE_INTERRUPT_ITLB_MISS] = 8,
- [BOOKE_INTERRUPT_MACHINE_CHECK] = 9,
- [BOOKE_INTERRUPT_DEBUG] = 10,
- [BOOKE_INTERRUPT_CRITICAL] = 11,
- [BOOKE_INTERRUPT_WATCHDOG] = 12,
- [BOOKE_INTERRUPT_EXTERNAL] = 13,
- [BOOKE_INTERRUPT_FIT] = 14,
- [BOOKE_INTERRUPT_DECREMENTER] = 15,
-};
-
-const unsigned char priority_exception[] = {
- BOOKE_INTERRUPT_DATA_STORAGE,
- BOOKE_INTERRUPT_INST_STORAGE,
- BOOKE_INTERRUPT_ALIGNMENT,
- BOOKE_INTERRUPT_PROGRAM,
- BOOKE_INTERRUPT_FP_UNAVAIL,
- BOOKE_INTERRUPT_SYSCALL,
- BOOKE_INTERRUPT_AP_UNAVAIL,
- BOOKE_INTERRUPT_DTLB_MISS,
- BOOKE_INTERRUPT_ITLB_MISS,
- BOOKE_INTERRUPT_MACHINE_CHECK,
- BOOKE_INTERRUPT_DEBUG,
- BOOKE_INTERRUPT_CRITICAL,
- BOOKE_INTERRUPT_WATCHDOG,
- BOOKE_INTERRUPT_EXTERNAL,
- BOOKE_INTERRUPT_FIT,
- BOOKE_INTERRUPT_DECREMENTER,
-};
-
-
/* TODO: use vcpu_printf() */
void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu)
{
}
}
-static void kvmppc_booke_queue_exception(struct kvm_vcpu *vcpu, int exception)
+static void kvmppc_booke_queue_irqprio(struct kvm_vcpu *vcpu,
+ unsigned int priority)
{
- unsigned int priority = exception_priority[exception];
set_bit(priority, &vcpu->arch.pending_exceptions);
}
-static void kvmppc_booke_clear_exception(struct kvm_vcpu *vcpu, int exception)
-{
- unsigned int priority = exception_priority[exception];
- clear_bit(priority, &vcpu->arch.pending_exceptions);
-}
-
void kvmppc_core_queue_program(struct kvm_vcpu *vcpu)
{
- kvmppc_booke_queue_exception(vcpu, BOOKE_INTERRUPT_PROGRAM);
+ kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_PROGRAM);
}
void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu)
{
- kvmppc_booke_queue_exception(vcpu, BOOKE_INTERRUPT_DECREMENTER);
+ kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DECREMENTER);
}
int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu)
{
- unsigned int priority = exception_priority[BOOKE_INTERRUPT_DECREMENTER];
- return test_bit(priority, &vcpu->arch.pending_exceptions);
+ return test_bit(BOOKE_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions);
}
void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
struct kvm_interrupt *irq)
{
- kvmppc_booke_queue_exception(vcpu, BOOKE_INTERRUPT_EXTERNAL);
+ kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_EXTERNAL);
}
-/* Check if we are ready to deliver the interrupt */
-static int kvmppc_can_deliver_interrupt(struct kvm_vcpu *vcpu, int interrupt)
+/* Deliver the interrupt of the corresponding priority, if possible. */
+static int kvmppc_booke_irqprio_deliver(struct kvm_vcpu *vcpu,
+ unsigned int priority)
{
- int r;
-
- switch (interrupt) {
- case BOOKE_INTERRUPT_CRITICAL:
- r = vcpu->arch.msr & MSR_CE;
+ int allowed = 0;
+ ulong msr_mask;
+
+ switch (priority) {
+ case BOOKE_IRQPRIO_PROGRAM:
+ case BOOKE_IRQPRIO_DTLB_MISS:
+ case BOOKE_IRQPRIO_ITLB_MISS:
+ case BOOKE_IRQPRIO_SYSCALL:
+ case BOOKE_IRQPRIO_DATA_STORAGE:
+ case BOOKE_IRQPRIO_INST_STORAGE:
+ case BOOKE_IRQPRIO_FP_UNAVAIL:
+ case BOOKE_IRQPRIO_AP_UNAVAIL:
+ case BOOKE_IRQPRIO_ALIGNMENT:
+ allowed = 1;
+ msr_mask = MSR_CE|MSR_ME|MSR_DE;
break;
- case BOOKE_INTERRUPT_MACHINE_CHECK:
- r = vcpu->arch.msr & MSR_ME;
+ case BOOKE_IRQPRIO_CRITICAL:
+ case BOOKE_IRQPRIO_WATCHDOG:
+ allowed = vcpu->arch.msr & MSR_CE;
+ msr_mask = MSR_ME;
break;
- case BOOKE_INTERRUPT_EXTERNAL:
- r = vcpu->arch.msr & MSR_EE;
- break;
- case BOOKE_INTERRUPT_DECREMENTER:
- r = vcpu->arch.msr & MSR_EE;
+ case BOOKE_IRQPRIO_MACHINE_CHECK:
+ allowed = vcpu->arch.msr & MSR_ME;
+ msr_mask = 0;
break;
- case BOOKE_INTERRUPT_FIT:
- r = vcpu->arch.msr & MSR_EE;
+ case BOOKE_IRQPRIO_EXTERNAL:
+ case BOOKE_IRQPRIO_DECREMENTER:
+ case BOOKE_IRQPRIO_FIT:
+ allowed = vcpu->arch.msr & MSR_EE;
+ msr_mask = MSR_CE|MSR_ME|MSR_DE;
break;
- case BOOKE_INTERRUPT_WATCHDOG:
- r = vcpu->arch.msr & MSR_CE;
+ case BOOKE_IRQPRIO_DEBUG:
+ allowed = vcpu->arch.msr & MSR_DE;
+ msr_mask = MSR_ME;
break;
- case BOOKE_INTERRUPT_DEBUG:
- r = vcpu->arch.msr & MSR_DE;
- break;
- default:
- r = 1;
}
- return r;
-}
+ if (allowed) {
+ vcpu->arch.srr0 = vcpu->arch.pc;
+ vcpu->arch.srr1 = vcpu->arch.msr;
+ vcpu->arch.pc = vcpu->arch.ivpr | vcpu->arch.ivor[priority];
+ kvmppc_set_msr(vcpu, vcpu->arch.msr & msr_mask);
-static void kvmppc_booke_deliver_interrupt(struct kvm_vcpu *vcpu, int interrupt)
-{
- switch (interrupt) {
- case BOOKE_INTERRUPT_DECREMENTER:
- vcpu->arch.tsr |= TSR_DIS;
- break;
+ clear_bit(priority, &vcpu->arch.pending_exceptions);
}
- vcpu->arch.srr0 = vcpu->arch.pc;
- vcpu->arch.srr1 = vcpu->arch.msr;
- vcpu->arch.pc = vcpu->arch.ivpr | vcpu->arch.ivor[interrupt];
- kvmppc_set_msr(vcpu, vcpu->arch.msr & interrupt_msr_mask[interrupt]);
+ return allowed;
}
/* Check pending exceptions and deliver one, if possible. */
void kvmppc_core_deliver_interrupts(struct kvm_vcpu *vcpu)
{
unsigned long *pending = &vcpu->arch.pending_exceptions;
- unsigned int exception;
unsigned int priority;
priority = __ffs(*pending);
while (priority <= BOOKE_MAX_INTERRUPT) {
- exception = priority_exception[priority];
- if (kvmppc_can_deliver_interrupt(vcpu, exception)) {
- kvmppc_booke_clear_exception(vcpu, exception);
- kvmppc_booke_deliver_interrupt(vcpu, exception);
+ if (kvmppc_booke_irqprio_deliver(vcpu, priority))
break;
- }
priority = find_next_bit(pending,
BITS_PER_BYTE * sizeof(*pending),
/* Program traps generated by user-level software must be handled
* by the guest kernel. */
vcpu->arch.esr = vcpu->arch.fault_esr;
- kvmppc_booke_queue_exception(vcpu, BOOKE_INTERRUPT_PROGRAM);
+ kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_PROGRAM);
r = RESUME_GUEST;
break;
}
break;
case BOOKE_INTERRUPT_FP_UNAVAIL:
- kvmppc_booke_queue_exception(vcpu, exit_nr);
+ kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_FP_UNAVAIL);
r = RESUME_GUEST;
break;
case BOOKE_INTERRUPT_DATA_STORAGE:
vcpu->arch.dear = vcpu->arch.fault_dear;
vcpu->arch.esr = vcpu->arch.fault_esr;
- kvmppc_booke_queue_exception(vcpu, exit_nr);
+ kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DATA_STORAGE);
vcpu->stat.dsi_exits++;
r = RESUME_GUEST;
break;
case BOOKE_INTERRUPT_INST_STORAGE:
vcpu->arch.esr = vcpu->arch.fault_esr;
- kvmppc_booke_queue_exception(vcpu, exit_nr);
+ kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_INST_STORAGE);
vcpu->stat.isi_exits++;
r = RESUME_GUEST;
break;
case BOOKE_INTERRUPT_SYSCALL:
- kvmppc_booke_queue_exception(vcpu, exit_nr);
+ kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_SYSCALL);
vcpu->stat.syscall_exits++;
r = RESUME_GUEST;
break;
gtlbe = kvmppc_44x_dtlb_search(vcpu, eaddr);
if (!gtlbe) {
/* The guest didn't have a mapping for it. */
- kvmppc_booke_queue_exception(vcpu, exit_nr);
+ kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DTLB_MISS);
vcpu->arch.dear = vcpu->arch.fault_dear;
vcpu->arch.esr = vcpu->arch.fault_esr;
vcpu->stat.dtlb_real_miss_exits++;
gtlbe = kvmppc_44x_itlb_search(vcpu, eaddr);
if (!gtlbe) {
/* The guest didn't have a mapping for it. */
- kvmppc_booke_queue_exception(vcpu, exit_nr);
+ kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_ITLB_MISS);
vcpu->stat.itlb_real_miss_exits++;
break;
}
gtlbe->word2);
} else {
/* Guest mapped and leaped at non-RAM! */
- kvmppc_booke_queue_exception(vcpu, BOOKE_INTERRUPT_MACHINE_CHECK);
+ kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_MACHINE_CHECK);
}
break;
projects / karo-tx-linux.git / blobdiff