vgic.h 4.1 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
/*
 * Copyright (C) 2015, 2016 ARM Ltd.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
#ifndef __KVM_ARM_VGIC_NEW_H__
#define __KVM_ARM_VGIC_NEW_H__

19 20
#include <linux/irqchip/arm-gic-common.h>

21 22 23
#define PRODUCT_ID_KVM		0x4b	/* ASCII code K */
#define IMPLEMENTER_ARM		0x43b

24 25 26
#define VGIC_ADDR_UNDEF		(-1)
#define IS_VGIC_ADDR_UNDEF(_x)  ((_x) == VGIC_ADDR_UNDEF)

27
#define INTERRUPT_ID_BITS_SPIS	10
28 29
#define VGIC_PRI_BITS		5

30 31
#define vgic_irq_is_sgi(intid) ((intid) < VGIC_NR_SGIS)

32 33 34 35 36 37 38
struct vgic_vmcr {
	u32	ctlr;
	u32	abpr;
	u32	bpr;
	u32	pmr;
};

39 40
struct vgic_irq *vgic_get_irq(struct kvm *kvm, struct kvm_vcpu *vcpu,
			      u32 intid);
41
void vgic_put_irq(struct kvm *kvm, struct vgic_irq *irq);
42
bool vgic_queue_irq_unlock(struct kvm *kvm, struct vgic_irq *irq);
43
void vgic_kick_vcpus(struct kvm *kvm);
44

45 46 47
int vgic_check_ioaddr(struct kvm *kvm, phys_addr_t *ioaddr,
		      phys_addr_t addr, phys_addr_t alignment);

48 49 50 51 52
void vgic_v2_process_maintenance(struct kvm_vcpu *vcpu);
void vgic_v2_fold_lr_state(struct kvm_vcpu *vcpu);
void vgic_v2_populate_lr(struct kvm_vcpu *vcpu, struct vgic_irq *irq, int lr);
void vgic_v2_clear_lr(struct kvm_vcpu *vcpu, int lr);
void vgic_v2_set_underflow(struct kvm_vcpu *vcpu);
53
int vgic_v2_has_attr_regs(struct kvm_device *dev, struct kvm_device_attr *attr);
54 55
int vgic_v2_dist_uaccess(struct kvm_vcpu *vcpu, bool is_write,
			 int offset, u32 *val);
56 57
int vgic_v2_cpuif_uaccess(struct kvm_vcpu *vcpu, bool is_write,
			  int offset, u32 *val);
58 59
void vgic_v2_set_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr);
void vgic_v2_get_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr);
60
void vgic_v2_enable(struct kvm_vcpu *vcpu);
61
int vgic_v2_probe(const struct gic_kvm_info *info);
62
int vgic_v2_map_resources(struct kvm *kvm);
63 64
int vgic_register_dist_iodev(struct kvm *kvm, gpa_t dist_base_address,
			     enum vgic_type);
65

66 67 68 69 70 71
#ifdef CONFIG_KVM_ARM_VGIC_V3
void vgic_v3_process_maintenance(struct kvm_vcpu *vcpu);
void vgic_v3_fold_lr_state(struct kvm_vcpu *vcpu);
void vgic_v3_populate_lr(struct kvm_vcpu *vcpu, struct vgic_irq *irq, int lr);
void vgic_v3_clear_lr(struct kvm_vcpu *vcpu, int lr);
void vgic_v3_set_underflow(struct kvm_vcpu *vcpu);
72 73
void vgic_v3_set_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr);
void vgic_v3_get_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr);
74
void vgic_v3_enable(struct kvm_vcpu *vcpu);
75
int vgic_v3_probe(const struct gic_kvm_info *info);
76
int vgic_v3_map_resources(struct kvm *kvm);
77
int vgic_register_redist_iodevs(struct kvm *kvm, gpa_t dist_base_address);
78
bool vgic_has_its(struct kvm *kvm);
79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99
#else
static inline void vgic_v3_process_maintenance(struct kvm_vcpu *vcpu)
{
}

static inline void vgic_v3_fold_lr_state(struct kvm_vcpu *vcpu)
{
}

static inline void vgic_v3_populate_lr(struct kvm_vcpu *vcpu,
				       struct vgic_irq *irq, int lr)
{
}

static inline void vgic_v3_clear_lr(struct kvm_vcpu *vcpu, int lr)
{
}

static inline void vgic_v3_set_underflow(struct kvm_vcpu *vcpu)
{
}
100

101 102 103 104 105 106 107 108 109 110
static inline
void vgic_v3_set_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr)
{
}

static inline
void vgic_v3_get_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr)
{
}

111 112 113 114
static inline void vgic_v3_enable(struct kvm_vcpu *vcpu)
{
}

115 116 117 118 119
static inline int vgic_v3_probe(const struct gic_kvm_info *info)
{
	return -ENODEV;
}

120 121 122 123 124
static inline int vgic_v3_map_resources(struct kvm *kvm)
{
	return -ENODEV;
}

125 126 127 128 129
static inline int vgic_register_redist_iodevs(struct kvm *kvm,
					      gpa_t dist_base_address)
{
	return -ENODEV;
}
130 131 132 133 134 135

static inline bool vgic_has_its(struct kvm *kvm)
{
	return false;
}

136 137
#endif

138
int kvm_register_vgic_device(unsigned long type);
139 140
int vgic_lazy_init(struct kvm *kvm);
int vgic_init(struct kvm *kvm);
141

142
#endif