1 #ifndef __KVM_IO_APIC_H 2 #define __KVM_IO_APIC_H 3 4 #include <linux/kvm_host.h> 5 6 #include <kvm/iodev.h> 7 8 struct kvm; 9 struct kvm_vcpu; 10 11 #define IOAPIC_NUM_PINS KVM_IOAPIC_NUM_PINS 12 #define MAX_NR_RESERVED_IOAPIC_PINS KVM_MAX_IRQ_ROUTES 13 #define IOAPIC_VERSION_ID 0x11 /* IOAPIC version */ 14 #define IOAPIC_EDGE_TRIG 0 15 #define IOAPIC_LEVEL_TRIG 1 16 17 #define IOAPIC_DEFAULT_BASE_ADDRESS 0xfec00000 18 #define IOAPIC_MEM_LENGTH 0x100 19 20 /* Direct registers. */ 21 #define IOAPIC_REG_SELECT 0x00 22 #define IOAPIC_REG_WINDOW 0x10 23 24 /* Indirect registers. */ 25 #define IOAPIC_REG_APIC_ID 0x00 /* x86 IOAPIC only */ 26 #define IOAPIC_REG_VERSION 0x01 27 #define IOAPIC_REG_ARB_ID 0x02 /* x86 IOAPIC only */ 28 29 /*ioapic delivery mode*/ 30 #define IOAPIC_FIXED 0x0 31 #define IOAPIC_LOWEST_PRIORITY 0x1 32 #define IOAPIC_PMI 0x2 33 #define IOAPIC_NMI 0x4 34 #define IOAPIC_INIT 0x5 35 #define IOAPIC_EXTINT 0x7 36 37 #ifdef CONFIG_X86 38 #define RTC_GSI 8 39 #else 40 #define RTC_GSI -1U 41 #endif 42 43 struct dest_map { 44 /* vcpu bitmap where IRQ has been sent */ 45 DECLARE_BITMAP(map, KVM_MAX_VCPUS); 46 47 /* 48 * Vector sent to a given vcpu, only valid when 49 * the vcpu's bit in map is set 50 */ 51 u8 vectors[KVM_MAX_VCPUS]; 52 }; 53 54 55 struct rtc_status { 56 int pending_eoi; 57 struct dest_map dest_map; 58 }; 59 60 union kvm_ioapic_redirect_entry { 61 u64 bits; 62 struct { 63 u8 vector; 64 u8 delivery_mode:3; 65 u8 dest_mode:1; 66 u8 delivery_status:1; 67 u8 polarity:1; 68 u8 remote_irr:1; 69 u8 trig_mode:1; 70 u8 mask:1; 71 u8 reserve:7; 72 u8 reserved[4]; 73 u8 dest_id; 74 } fields; 75 }; 76 77 struct kvm_ioapic { 78 u64 base_address; 79 u32 ioregsel; 80 u32 id; 81 u32 irr; 82 u32 pad; 83 union kvm_ioapic_redirect_entry redirtbl[IOAPIC_NUM_PINS]; 84 unsigned long irq_states[IOAPIC_NUM_PINS]; 85 struct kvm_io_device dev; 86 struct kvm *kvm; 87 void (*ack_notifier)(void *opaque, int irq); 88 spinlock_t lock; 89 struct rtc_status rtc_status; 90 struct delayed_work eoi_inject; 91 u32 irq_eoi[IOAPIC_NUM_PINS]; 92 u32 irr_delivered; 93 }; 94 95 #ifdef DEBUG 96 #define ASSERT(x) \ 97 do { \ 98 if (!(x)) { \ 99 printk(KERN_EMERG "assertion failed %s: %d: %s\n", \ 100 __FILE__, __LINE__, #x); \ 101 BUG(); \ 102 } \ 103 } while (0) 104 #else 105 #define ASSERT(x) do { } while (0) 106 #endif 107 108 static inline struct kvm_ioapic *ioapic_irqchip(struct kvm *kvm) 109 { 110 return kvm->arch.vioapic; 111 } 112 113 static inline int ioapic_in_kernel(struct kvm *kvm) 114 { 115 int ret; 116 117 ret = (ioapic_irqchip(kvm) != NULL); 118 return ret; 119 } 120 121 void kvm_rtc_eoi_tracking_restore_one(struct kvm_vcpu *vcpu); 122 bool kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source, 123 int short_hand, unsigned int dest, int dest_mode); 124 int kvm_apic_compare_prio(struct kvm_vcpu *vcpu1, struct kvm_vcpu *vcpu2); 125 void kvm_ioapic_update_eoi(struct kvm_vcpu *vcpu, int vector, 126 int trigger_mode); 127 int kvm_ioapic_init(struct kvm *kvm); 128 void kvm_ioapic_destroy(struct kvm *kvm); 129 int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int irq_source_id, 130 int level, bool line_status); 131 void kvm_ioapic_clear_all(struct kvm_ioapic *ioapic, int irq_source_id); 132 int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src, 133 struct kvm_lapic_irq *irq, 134 struct dest_map *dest_map); 135 int kvm_get_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state); 136 int kvm_set_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state); 137 void kvm_ioapic_scan_entry(struct kvm_vcpu *vcpu, 138 ulong *ioapic_handled_vectors); 139 void kvm_scan_ioapic_routes(struct kvm_vcpu *vcpu, 140 ulong *ioapic_handled_vectors); 141 #endif 142