^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) #ifndef __KVM_IO_APIC_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) #define __KVM_IO_APIC_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include <linux/kvm_host.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <kvm/iodev.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include "irq.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) struct kvm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) struct kvm_vcpu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #define IOAPIC_NUM_PINS KVM_IOAPIC_NUM_PINS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #define MAX_NR_RESERVED_IOAPIC_PINS KVM_MAX_IRQ_ROUTES
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #define IOAPIC_VERSION_ID 0x11 /* IOAPIC version */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #define IOAPIC_EDGE_TRIG 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #define IOAPIC_LEVEL_TRIG 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define IOAPIC_DEFAULT_BASE_ADDRESS 0xfec00000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define IOAPIC_MEM_LENGTH 0x100
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) /* Direct registers. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define IOAPIC_REG_SELECT 0x00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define IOAPIC_REG_WINDOW 0x10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) /* Indirect registers. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define IOAPIC_REG_APIC_ID 0x00 /* x86 IOAPIC only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define IOAPIC_REG_VERSION 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define IOAPIC_REG_ARB_ID 0x02 /* x86 IOAPIC only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) /*ioapic delivery mode*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define IOAPIC_FIXED 0x0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define IOAPIC_LOWEST_PRIORITY 0x1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define IOAPIC_PMI 0x2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define IOAPIC_NMI 0x4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define IOAPIC_INIT 0x5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define IOAPIC_EXTINT 0x7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #ifdef CONFIG_X86
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define RTC_GSI 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #define RTC_GSI -1U
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) struct dest_map {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) /* vcpu bitmap where IRQ has been sent */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) DECLARE_BITMAP(map, KVM_MAX_VCPU_ID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) * Vector sent to a given vcpu, only valid when
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) * the vcpu's bit in map is set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) u8 vectors[KVM_MAX_VCPU_ID];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) struct rtc_status {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) int pending_eoi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) struct dest_map dest_map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) union kvm_ioapic_redirect_entry {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) u64 bits;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) u8 vector;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) u8 delivery_mode:3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) u8 dest_mode:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) u8 delivery_status:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) u8 polarity:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) u8 remote_irr:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) u8 trig_mode:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) u8 mask:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) u8 reserve:7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) u8 reserved[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) u8 dest_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) } fields;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) struct kvm_ioapic {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) u64 base_address;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) u32 ioregsel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) u32 id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) u32 irr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) u32 pad;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) union kvm_ioapic_redirect_entry redirtbl[IOAPIC_NUM_PINS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) unsigned long irq_states[IOAPIC_NUM_PINS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) struct kvm_io_device dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) struct kvm *kvm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) void (*ack_notifier)(void *opaque, int irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) spinlock_t lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) struct rtc_status rtc_status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) struct delayed_work eoi_inject;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) u32 irq_eoi[IOAPIC_NUM_PINS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) u32 irr_delivered;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) #ifdef DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) #define ASSERT(x) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) do { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) if (!(x)) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) printk(KERN_EMERG "assertion failed %s: %d: %s\n", \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) __FILE__, __LINE__, #x); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) BUG(); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) } \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) } while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) #define ASSERT(x) do { } while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) static inline int ioapic_in_kernel(struct kvm *kvm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) return irqchip_kernel(kvm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) void kvm_rtc_eoi_tracking_restore_one(struct kvm_vcpu *vcpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) void kvm_ioapic_update_eoi(struct kvm_vcpu *vcpu, int vector,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) int trigger_mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) int kvm_ioapic_init(struct kvm *kvm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) void kvm_ioapic_destroy(struct kvm *kvm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int irq_source_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) int level, bool line_status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) void kvm_ioapic_clear_all(struct kvm_ioapic *ioapic, int irq_source_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) void kvm_get_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) void kvm_set_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) void kvm_ioapic_scan_entry(struct kvm_vcpu *vcpu,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) ulong *ioapic_handled_vectors);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) void kvm_scan_ioapic_routes(struct kvm_vcpu *vcpu,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) ulong *ioapic_handled_vectors);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) #endif
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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