summaryrefslogtreecommitdiff
path: root/include/kvm/vgic/vgic.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/kvm/vgic/vgic.h')
-rw-r--r--include/kvm/vgic/vgic.h246
1 files changed, 0 insertions, 246 deletions
diff --git a/include/kvm/vgic/vgic.h b/include/kvm/vgic/vgic.h
deleted file mode 100644
index 3fbd175265ae..000000000000
--- a/include/kvm/vgic/vgic.h
+++ /dev/null
@@ -1,246 +0,0 @@
-/*
- * 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 __ASM_ARM_KVM_VGIC_VGIC_H
-#define __ASM_ARM_KVM_VGIC_VGIC_H
-
-#include <linux/kernel.h>
-#include <linux/kvm.h>
-#include <linux/irqreturn.h>
-#include <linux/spinlock.h>
-#include <linux/types.h>
-#include <kvm/iodev.h>
-
-#define VGIC_V3_MAX_CPUS 255
-#define VGIC_V2_MAX_CPUS 8
-#define VGIC_NR_IRQS_LEGACY 256
-#define VGIC_NR_SGIS 16
-#define VGIC_NR_PPIS 16
-#define VGIC_NR_PRIVATE_IRQS (VGIC_NR_SGIS + VGIC_NR_PPIS)
-#define VGIC_MAX_PRIVATE (VGIC_NR_PRIVATE_IRQS - 1)
-#define VGIC_MAX_SPI 1019
-#define VGIC_MAX_RESERVED 1023
-#define VGIC_MIN_LPI 8192
-
-enum vgic_type {
- VGIC_V2, /* Good ol' GICv2 */
- VGIC_V3, /* New fancy GICv3 */
-};
-
-/* same for all guests, as depending only on the _host's_ GIC model */
-struct vgic_global {
- /* type of the host GIC */
- enum vgic_type type;
-
- /* Physical address of vgic virtual cpu interface */
- phys_addr_t vcpu_base;
-
- /* virtual control interface mapping */
- void __iomem *vctrl_base;
-
- /* Number of implemented list registers */
- int nr_lr;
-
- /* Maintenance IRQ number */
- unsigned int maint_irq;
-
- /* maximum number of VCPUs allowed (GICv2 limits us to 8) */
- int max_gic_vcpus;
-
- /* Only needed for the legacy KVM_CREATE_IRQCHIP */
- bool can_emulate_gicv2;
-};
-
-extern struct vgic_global kvm_vgic_global_state;
-
-#define VGIC_V2_MAX_LRS (1 << 6)
-#define VGIC_V3_MAX_LRS 16
-#define VGIC_V3_LR_INDEX(lr) (VGIC_V3_MAX_LRS - 1 - lr)
-
-enum vgic_irq_config {
- VGIC_CONFIG_EDGE = 0,
- VGIC_CONFIG_LEVEL
-};
-
-struct vgic_irq {
- spinlock_t irq_lock; /* Protects the content of the struct */
- struct list_head ap_list;
-
- struct kvm_vcpu *vcpu; /* SGIs and PPIs: The VCPU
- * SPIs and LPIs: The VCPU whose ap_list
- * this is queued on.
- */
-
- struct kvm_vcpu *target_vcpu; /* The VCPU that this interrupt should
- * be sent to, as a result of the
- * targets reg (v2) or the
- * affinity reg (v3).
- */
-
- u32 intid; /* Guest visible INTID */
- bool pending;
- bool line_level; /* Level only */
- bool soft_pending; /* Level only */
- bool active; /* not used for LPIs */
- bool enabled;
- bool hw; /* Tied to HW IRQ */
- u32 hwintid; /* HW INTID number */
- union {
- u8 targets; /* GICv2 target VCPUs mask */
- u32 mpidr; /* GICv3 target VCPU */
- };
- u8 source; /* GICv2 SGIs only */
- u8 priority;
- enum vgic_irq_config config; /* Level or edge */
-};
-
-struct vgic_register_region;
-
-struct vgic_io_device {
- gpa_t base_addr;
- struct kvm_vcpu *redist_vcpu;
- const struct vgic_register_region *regions;
- int nr_regions;
- struct kvm_io_device dev;
-};
-
-struct vgic_dist {
- bool in_kernel;
- bool ready;
- bool initialized;
-
- /* vGIC model the kernel emulates for the guest (GICv2 or GICv3) */
- u32 vgic_model;
-
- int nr_spis;
-
- /* TODO: Consider moving to global state */
- /* Virtual control interface mapping */
- void __iomem *vctrl_base;
-
- /* base addresses in guest physical address space: */
- gpa_t vgic_dist_base; /* distributor */
- union {
- /* either a GICv2 CPU interface */
- gpa_t vgic_cpu_base;
- /* or a number of GICv3 redistributor regions */
- gpa_t vgic_redist_base;
- };
-
- /* distributor enabled */
- bool enabled;
-
- struct vgic_irq *spis;
-
- struct vgic_io_device dist_iodev;
- struct vgic_io_device *redist_iodevs;
-};
-
-struct vgic_v2_cpu_if {
- u32 vgic_hcr;
- u32 vgic_vmcr;
- u32 vgic_misr; /* Saved only */
- u64 vgic_eisr; /* Saved only */
- u64 vgic_elrsr; /* Saved only */
- u32 vgic_apr;
- u32 vgic_lr[VGIC_V2_MAX_LRS];
-};
-
-struct vgic_v3_cpu_if {
-#ifdef CONFIG_KVM_ARM_VGIC_V3
- u32 vgic_hcr;
- u32 vgic_vmcr;
- u32 vgic_sre; /* Restored only, change ignored */
- u32 vgic_misr; /* Saved only */
- u32 vgic_eisr; /* Saved only */
- u32 vgic_elrsr; /* Saved only */
- u32 vgic_ap0r[4];
- u32 vgic_ap1r[4];
- u64 vgic_lr[VGIC_V3_MAX_LRS];
-#endif
-};
-
-struct vgic_cpu {
- /* CPU vif control registers for world switch */
- union {
- struct vgic_v2_cpu_if vgic_v2;
- struct vgic_v3_cpu_if vgic_v3;
- };
-
- unsigned int used_lrs;
- struct vgic_irq private_irqs[VGIC_NR_PRIVATE_IRQS];
-
- spinlock_t ap_list_lock; /* Protects the ap_list */
-
- /*
- * List of IRQs that this VCPU should consider because they are either
- * Active or Pending (hence the name; AP list), or because they recently
- * were one of the two and need to be migrated off this list to another
- * VCPU.
- */
- struct list_head ap_list_head;
-
- u64 live_lrs;
-};
-
-int kvm_vgic_addr(struct kvm *kvm, unsigned long type, u64 *addr, bool write);
-void kvm_vgic_early_init(struct kvm *kvm);
-int kvm_vgic_create(struct kvm *kvm, u32 type);
-void kvm_vgic_destroy(struct kvm *kvm);
-void kvm_vgic_vcpu_early_init(struct kvm_vcpu *vcpu);
-void kvm_vgic_vcpu_destroy(struct kvm_vcpu *vcpu);
-int kvm_vgic_map_resources(struct kvm *kvm);
-int kvm_vgic_hyp_init(void);
-
-int kvm_vgic_inject_irq(struct kvm *kvm, int cpuid, unsigned int intid,
- bool level);
-int kvm_vgic_inject_mapped_irq(struct kvm *kvm, int cpuid, unsigned int intid,
- bool level);
-int kvm_vgic_map_phys_irq(struct kvm_vcpu *vcpu, u32 virt_irq, u32 phys_irq);
-int kvm_vgic_unmap_phys_irq(struct kvm_vcpu *vcpu, unsigned int virt_irq);
-bool kvm_vgic_map_is_active(struct kvm_vcpu *vcpu, unsigned int virt_irq);
-
-int kvm_vgic_vcpu_pending_irq(struct kvm_vcpu *vcpu);
-
-#define irqchip_in_kernel(k) (!!((k)->arch.vgic.in_kernel))
-#define vgic_initialized(k) ((k)->arch.vgic.initialized)
-#define vgic_ready(k) ((k)->arch.vgic.ready)
-#define vgic_valid_spi(k, i) (((i) >= VGIC_NR_PRIVATE_IRQS) && \
- ((i) < (k)->arch.vgic.nr_spis + VGIC_NR_PRIVATE_IRQS))
-
-bool kvm_vcpu_has_pending_irqs(struct kvm_vcpu *vcpu);
-void kvm_vgic_sync_hwstate(struct kvm_vcpu *vcpu);
-void kvm_vgic_flush_hwstate(struct kvm_vcpu *vcpu);
-
-#ifdef CONFIG_KVM_ARM_VGIC_V3
-void vgic_v3_dispatch_sgi(struct kvm_vcpu *vcpu, u64 reg);
-#else
-static inline void vgic_v3_dispatch_sgi(struct kvm_vcpu *vcpu, u64 reg)
-{
-}
-#endif
-
-/**
- * kvm_vgic_get_max_vcpus - Get the maximum number of VCPUs allowed by HW
- *
- * The host's GIC naturally limits the maximum amount of VCPUs a guest
- * can use.
- */
-static inline int kvm_vgic_get_max_vcpus(void)
-{
- return kvm_vgic_global_state.max_gic_vcpus;
-}
-
-#endif /* __ASM_ARM_KVM_VGIC_VGIC_H */