1/*
 2 * This file is subject to the terms and conditions of the GNU General Public
 3 * License.  See the file "COPYING" in the main directory of this archive
 4 * for more details.
 5 *
 6 * KVM/MIPS: Interrupts
 7 * Copyright (C) 2012  MIPS Technologies, Inc.  All rights reserved.
 8 * Authors: Sanjay Lal <sanjayl@kymasys.com>
 9 */
10
11/*
12 * MIPS Exception Priorities, exceptions (including interrupts) are queued up
13 * for the guest in the order specified by their priorities
14 */
15
16#define MIPS_EXC_RESET              0
17#define MIPS_EXC_SRESET             1
18#define MIPS_EXC_DEBUG_ST           2
19#define MIPS_EXC_DEBUG              3
20#define MIPS_EXC_DDB                4
21#define MIPS_EXC_NMI                5
22#define MIPS_EXC_MCHK               6
23#define MIPS_EXC_INT_TIMER          7
24#define MIPS_EXC_INT_IO_1           8
25#define MIPS_EXC_INT_IO_2           9
26#define MIPS_EXC_EXECUTE            10
27#define MIPS_EXC_INT_IPI_1          11
28#define MIPS_EXC_INT_IPI_2          12
29#define MIPS_EXC_MAX                13
30/* XXXSL More to follow */
31
32#define C_TI        (_ULCAST_(1) << 30)
33
34#ifdef CONFIG_KVM_MIPS_VZ
35#define KVM_MIPS_IRQ_DELIVER_ALL_AT_ONCE (1)
36#define KVM_MIPS_IRQ_CLEAR_ALL_AT_ONCE   (1)
37#else
38#define KVM_MIPS_IRQ_DELIVER_ALL_AT_ONCE (0)
39#define KVM_MIPS_IRQ_CLEAR_ALL_AT_ONCE   (0)
40#endif
41
42extern u32 *kvm_priority_to_irq;
43u32 kvm_irq_to_priority(u32 irq);
44
45void kvm_mips_queue_irq(struct kvm_vcpu *vcpu, unsigned int priority);
46void kvm_mips_dequeue_irq(struct kvm_vcpu *vcpu, unsigned int priority);
47int kvm_mips_pending_timer(struct kvm_vcpu *vcpu);
48
49void kvm_mips_queue_timer_int_cb(struct kvm_vcpu *vcpu);
50void kvm_mips_dequeue_timer_int_cb(struct kvm_vcpu *vcpu);
51void kvm_mips_queue_io_int_cb(struct kvm_vcpu *vcpu,
52			      struct kvm_mips_interrupt *irq);
53void kvm_mips_dequeue_io_int_cb(struct kvm_vcpu *vcpu,
54				struct kvm_mips_interrupt *irq);
55int kvm_mips_irq_deliver_cb(struct kvm_vcpu *vcpu, unsigned int priority,
56			    u32 cause);
57int kvm_mips_irq_clear_cb(struct kvm_vcpu *vcpu, unsigned int priority,
58			  u32 cause);
59void kvm_mips_deliver_interrupts(struct kvm_vcpu *vcpu, u32 cause);