tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Copyright (C) 2015, 2016 ARM Ltd.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
15 */
16#ifndef __KVM_ARM_VGIC_NEW_H__
17#define __KVM_ARM_VGIC_NEW_H__
18
19#include <linux/irqchip/arm-gic-common.h>
20
21#define PRODUCT_ID_KVM 0x4b /* ASCII code K */
22#define IMPLEMENTER_ARM 0x43b
23
24#define VGIC_ADDR_UNDEF (-1)
25#define IS_VGIC_ADDR_UNDEF(_x) ((_x) == VGIC_ADDR_UNDEF)
26
27#define INTERRUPT_ID_BITS_SPIS 10
28#define VGIC_PRI_BITS 5
29
30#define vgic_irq_is_sgi(intid) ((intid) < VGIC_NR_SGIS)
31
32struct vgic_vmcr {
33 u32 ctlr;
34 u32 abpr;
35 u32 bpr;
36 u32 pmr;
37};
38
39struct vgic_irq *vgic_get_irq(struct kvm *kvm, struct kvm_vcpu *vcpu,
40 u32 intid);
41bool vgic_queue_irq_unlock(struct kvm *kvm, struct vgic_irq *irq);
42void vgic_kick_vcpus(struct kvm *kvm);
43
44void vgic_v2_process_maintenance(struct kvm_vcpu *vcpu);
45void vgic_v2_fold_lr_state(struct kvm_vcpu *vcpu);
46void vgic_v2_populate_lr(struct kvm_vcpu *vcpu, struct vgic_irq *irq, int lr);
47void vgic_v2_clear_lr(struct kvm_vcpu *vcpu, int lr);
48void vgic_v2_set_underflow(struct kvm_vcpu *vcpu);
49int vgic_v2_has_attr_regs(struct kvm_device *dev, struct kvm_device_attr *attr);
50int vgic_v2_dist_uaccess(struct kvm_vcpu *vcpu, bool is_write,
51 int offset, u32 *val);
52int vgic_v2_cpuif_uaccess(struct kvm_vcpu *vcpu, bool is_write,
53 int offset, u32 *val);
54void vgic_v2_set_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr);
55void vgic_v2_get_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr);
56void vgic_v2_enable(struct kvm_vcpu *vcpu);
57int vgic_v2_probe(const struct gic_kvm_info *info);
58int vgic_v2_map_resources(struct kvm *kvm);
59int vgic_register_dist_iodev(struct kvm *kvm, gpa_t dist_base_address,
60 enum vgic_type);
61
62#ifdef CONFIG_KVM_ARM_VGIC_V3
63void vgic_v3_process_maintenance(struct kvm_vcpu *vcpu);
64void vgic_v3_fold_lr_state(struct kvm_vcpu *vcpu);
65void vgic_v3_populate_lr(struct kvm_vcpu *vcpu, struct vgic_irq *irq, int lr);
66void vgic_v3_clear_lr(struct kvm_vcpu *vcpu, int lr);
67void vgic_v3_set_underflow(struct kvm_vcpu *vcpu);
68void vgic_v3_set_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr);
69void vgic_v3_get_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr);
70void vgic_v3_enable(struct kvm_vcpu *vcpu);
71int vgic_v3_probe(const struct gic_kvm_info *info);
72int vgic_v3_map_resources(struct kvm *kvm);
73int vgic_register_redist_iodevs(struct kvm *kvm, gpa_t dist_base_address);
74#else
75static inline void vgic_v3_process_maintenance(struct kvm_vcpu *vcpu)
76{
77}
78
79static inline void vgic_v3_fold_lr_state(struct kvm_vcpu *vcpu)
80{
81}
82
83static inline void vgic_v3_populate_lr(struct kvm_vcpu *vcpu,
84 struct vgic_irq *irq, int lr)
85{
86}
87
88static inline void vgic_v3_clear_lr(struct kvm_vcpu *vcpu, int lr)
89{
90}
91
92static inline void vgic_v3_set_underflow(struct kvm_vcpu *vcpu)
93{
94}
95
96static inline
97void vgic_v3_set_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr)
98{
99}
100
101static inline
102void vgic_v3_get_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr)
103{
104}
105
106static inline void vgic_v3_enable(struct kvm_vcpu *vcpu)
107{
108}
109
110static inline int vgic_v3_probe(const struct gic_kvm_info *info)
111{
112 return -ENODEV;
113}
114
115static inline int vgic_v3_map_resources(struct kvm *kvm)
116{
117 return -ENODEV;
118}
119
120static inline int vgic_register_redist_iodevs(struct kvm *kvm,
121 gpa_t dist_base_address)
122{
123 return -ENODEV;
124}
125#endif
126
127void kvm_register_vgic_device(unsigned long type);
128int vgic_lazy_init(struct kvm *kvm);
129int vgic_init(struct kvm *kvm);
130
131#endif