diff options
Diffstat (limited to 'arch/mips/kvm/interrupt.c')
| -rw-r--r-- | arch/mips/kvm/interrupt.c | 123 |
1 files changed, 2 insertions, 121 deletions
diff --git a/arch/mips/kvm/interrupt.c b/arch/mips/kvm/interrupt.c index d28c2c9c343e..0277942279ea 100644 --- a/arch/mips/kvm/interrupt.c +++ b/arch/mips/kvm/interrupt.c @@ -21,119 +21,6 @@ #include "interrupt.h" -void kvm_mips_queue_irq(struct kvm_vcpu *vcpu, unsigned int priority) -{ - set_bit(priority, &vcpu->arch.pending_exceptions); -} - -void kvm_mips_dequeue_irq(struct kvm_vcpu *vcpu, unsigned int priority) -{ - clear_bit(priority, &vcpu->arch.pending_exceptions); -} - -void kvm_mips_queue_timer_int_cb(struct kvm_vcpu *vcpu) -{ - /* - * Cause bits to reflect the pending timer interrupt, - * the EXC code will be set when we are actually - * delivering the interrupt: - */ - kvm_set_c0_guest_cause(vcpu->arch.cop0, (C_IRQ5 | C_TI)); - - /* Queue up an INT exception for the core */ - kvm_mips_queue_irq(vcpu, MIPS_EXC_INT_TIMER); - -} - -void kvm_mips_dequeue_timer_int_cb(struct kvm_vcpu *vcpu) -{ - kvm_clear_c0_guest_cause(vcpu->arch.cop0, (C_IRQ5 | C_TI)); - kvm_mips_dequeue_irq(vcpu, MIPS_EXC_INT_TIMER); -} - -void kvm_mips_queue_io_int_cb(struct kvm_vcpu *vcpu, - struct kvm_mips_interrupt *irq) -{ - int intr = (int)irq->irq; - - /* - * Cause bits to reflect the pending IO interrupt, - * the EXC code will be set when we are actually - * delivering the interrupt: - */ - kvm_set_c0_guest_cause(vcpu->arch.cop0, 1 << (intr + 8)); - kvm_mips_queue_irq(vcpu, kvm_irq_to_priority(intr)); -} - -void kvm_mips_dequeue_io_int_cb(struct kvm_vcpu *vcpu, - struct kvm_mips_interrupt *irq) -{ - int intr = (int)irq->irq; - - kvm_clear_c0_guest_cause(vcpu->arch.cop0, 1 << (-intr + 8)); - kvm_mips_dequeue_irq(vcpu, kvm_irq_to_priority(-intr)); -} - -/* Deliver the interrupt of the corresponding priority, if possible. */ -int kvm_mips_irq_deliver_cb(struct kvm_vcpu *vcpu, unsigned int priority, - u32 cause) -{ - int allowed = 0; - u32 exccode, ie; - - struct kvm_vcpu_arch *arch = &vcpu->arch; - struct mips_coproc *cop0 = vcpu->arch.cop0; - - if (priority == MIPS_EXC_MAX) - return 0; - - ie = 1 << (kvm_priority_to_irq[priority] + 8); - if ((kvm_read_c0_guest_status(cop0) & ST0_IE) - && (!(kvm_read_c0_guest_status(cop0) & (ST0_EXL | ST0_ERL))) - && (kvm_read_c0_guest_status(cop0) & ie)) { - allowed = 1; - exccode = EXCCODE_INT; - } - - /* Are we allowed to deliver the interrupt ??? */ - if (allowed) { - if ((kvm_read_c0_guest_status(cop0) & ST0_EXL) == 0) { - /* save old pc */ - kvm_write_c0_guest_epc(cop0, arch->pc); - kvm_set_c0_guest_status(cop0, ST0_EXL); - - if (cause & CAUSEF_BD) - kvm_set_c0_guest_cause(cop0, CAUSEF_BD); - else - kvm_clear_c0_guest_cause(cop0, CAUSEF_BD); - - kvm_debug("Delivering INT @ pc %#lx\n", arch->pc); - - } else - kvm_err("Trying to deliver interrupt when EXL is already set\n"); - - kvm_change_c0_guest_cause(cop0, CAUSEF_EXCCODE, - (exccode << CAUSEB_EXCCODE)); - - /* XXXSL Set PC to the interrupt exception entry point */ - arch->pc = kvm_mips_guest_exception_base(vcpu); - if (kvm_read_c0_guest_cause(cop0) & CAUSEF_IV) - arch->pc += 0x200; - else - arch->pc += 0x180; - - clear_bit(priority, &vcpu->arch.pending_exceptions); - } - - return allowed; -} - -int kvm_mips_irq_clear_cb(struct kvm_vcpu *vcpu, unsigned int priority, - u32 cause) -{ - return 1; -} - void kvm_mips_deliver_interrupts(struct kvm_vcpu *vcpu, u32 cause) { unsigned long *pending = &vcpu->arch.pending_exceptions; @@ -145,10 +32,7 @@ void kvm_mips_deliver_interrupts(struct kvm_vcpu *vcpu, u32 cause) priority = __ffs(*pending_clr); while (priority <= MIPS_EXC_MAX) { - if (kvm_mips_callbacks->irq_clear(vcpu, priority, cause)) { - if (!KVM_MIPS_IRQ_CLEAR_ALL_AT_ONCE) - break; - } + kvm_mips_callbacks->irq_clear(vcpu, priority, cause); priority = find_next_bit(pending_clr, BITS_PER_BYTE * sizeof(*pending_clr), @@ -157,10 +41,7 @@ void kvm_mips_deliver_interrupts(struct kvm_vcpu *vcpu, u32 cause) priority = __ffs(*pending); while (priority <= MIPS_EXC_MAX) { - if (kvm_mips_callbacks->irq_deliver(vcpu, priority, cause)) { - if (!KVM_MIPS_IRQ_DELIVER_ALL_AT_ONCE) - break; - } + kvm_mips_callbacks->irq_deliver(vcpu, priority, cause); priority = find_next_bit(pending, BITS_PER_BYTE * sizeof(*pending), |