diff options
| author | Eddie Dong <eddie.dong@intel.com> | 2007-07-18 13:03:39 +0400 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2007-10-13 12:18:25 +0400 |
| commit | 1fd4f2a5ed8f80cf6e23d2bdf78554f6a1ac7997 (patch) | |
| tree | eb7d79c7f39788547a5dd9844295814085fcccc6 /drivers/kvm/irq.h | |
| parent | 97222cc8316328965851ed28d23f6b64b4c912d2 (diff) | |
| download | linux-1fd4f2a5ed8f80cf6e23d2bdf78554f6a1ac7997.tar.xz | |
KVM: In-kernel I/O APIC model
This allows in-kernel host-side device drivers to raise guest interrupts
without going to userspace.
[avi: fix level-triggered interrupt redelivery on eoi]
[avi: add missing #include]
[avi: avoid redelivery of edge-triggered interrupt]
[avi: implement polarity]
[avi: don't deliver edge-triggered interrupts when unmasking]
[avi: fix host oops on invalid guest access]
Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'drivers/kvm/irq.h')
| -rw-r--r-- | drivers/kvm/irq.h | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/drivers/kvm/irq.h b/drivers/kvm/irq.h index 57e23bdac530..6ed856a41e23 100644 --- a/drivers/kvm/irq.h +++ b/drivers/kvm/irq.h @@ -60,6 +60,50 @@ int kvm_pic_read_irq(struct kvm_pic *s); int kvm_cpu_get_interrupt(struct kvm_vcpu *v); int kvm_cpu_has_interrupt(struct kvm_vcpu *v); +#define IOAPIC_NUM_PINS 24 +#define IOAPIC_VERSION_ID 0x11 /* IOAPIC version */ +#define IOAPIC_EDGE_TRIG 0 +#define IOAPIC_LEVEL_TRIG 1 + +#define IOAPIC_DEFAULT_BASE_ADDRESS 0xfec00000 +#define IOAPIC_MEM_LENGTH 0x100 + +/* Direct registers. */ +#define IOAPIC_REG_SELECT 0x00 +#define IOAPIC_REG_WINDOW 0x10 +#define IOAPIC_REG_EOI 0x40 /* IA64 IOSAPIC only */ + +/* Indirect registers. */ +#define IOAPIC_REG_APIC_ID 0x00 /* x86 IOAPIC only */ +#define IOAPIC_REG_VERSION 0x01 +#define IOAPIC_REG_ARB_ID 0x02 /* x86 IOAPIC only */ + +struct kvm_ioapic { + u64 base_address; + u32 ioregsel; + u32 id; + u32 irr; + u32 pad; + union ioapic_redir_entry { + u64 bits; + struct { + u8 vector; + u8 delivery_mode:3; + u8 dest_mode:1; + u8 delivery_status:1; + u8 polarity:1; + u8 remote_irr:1; + u8 trig_mode:1; + u8 mask:1; + u8 reserve:7; + u8 reserved[4]; + u8 dest_id; + } fields; + } redirtbl[IOAPIC_NUM_PINS]; + struct kvm_io_device dev; + struct kvm *kvm; +}; + struct kvm_lapic { unsigned long base_address; struct kvm_io_device dev; @@ -96,8 +140,15 @@ void kvm_free_apic(struct kvm_lapic *apic); u64 kvm_lapic_get_cr8(struct kvm_vcpu *vcpu); void kvm_lapic_set_tpr(struct kvm_vcpu *vcpu, unsigned long cr8); void kvm_lapic_set_base(struct kvm_vcpu *vcpu, u64 value); +struct kvm_lapic *kvm_apic_round_robin(struct kvm *kvm, u8 vector, + unsigned long bitmap); u64 kvm_get_apic_base(struct kvm_vcpu *vcpu); void kvm_set_apic_base(struct kvm_vcpu *vcpu, u64 data); +int kvm_apic_match_physical_addr(struct kvm_lapic *apic, u16 dest); void kvm_ioapic_update_eoi(struct kvm *kvm, int vector); +int kvm_apic_match_logical_addr(struct kvm_lapic *apic, u8 mda); +int kvm_apic_set_irq(struct kvm_lapic *apic, u8 vec, u8 trig); +int kvm_ioapic_init(struct kvm *kvm); +void kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int level); #endif |