posted_intr.h

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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __KVM_X86_VMX_POSTED_INTR_H
#define __KVM_X86_VMX_POSTED_INTR_H
 
#define POSTED_INTR_ON  0
#define POSTED_INTR_SN  1
 
#define PID_TABLE_ENTRY_VALID 1
 
/* Posted-Interrupt Descriptor */
struct pi_desc {
    u32 pir[8];     /* Posted interrupt requested */
    union {
        struct {
                /* bit 256 - Outstanding Notification */
            u16 on  : 1,
                /* bit 257 - Suppress Notification */
                sn  : 1,
                /* bit 271:258 - Reserved */
                rsvd_1  : 14;
                /* bit 279:272 - Notification Vector */
            u8  nv;
                /* bit 287:280 - Reserved */
            u8  rsvd_2;
                /* bit 319:288 - Notification Destination */
            u32 ndst;
        };
        u64 control;
    };
    u32 rsvd[6];
} __aligned(64);
 
static inline bool pi_test_and_set_on(struct pi_desc *pi_desc)
{
    return test_and_set_bit(POSTED_INTR_ON,
            (unsigned long *)&pi_desc->control);
}
 
static inline bool pi_test_and_clear_on(struct pi_desc *pi_desc)
{
    return test_and_clear_bit(POSTED_INTR_ON,
            (unsigned long *)&pi_desc->control);
}
 
static inline bool pi_test_and_clear_sn(struct pi_desc *pi_desc)
{
    return test_and_clear_bit(POSTED_INTR_SN,
            (unsigned long *)&pi_desc->control);
}
 
static inline bool pi_test_and_set_pir(int vector, struct pi_desc *pi_desc)
{
    return test_and_set_bit(vector, (unsigned long *)pi_desc->pir);
}
 
static inline bool pi_is_pir_empty(struct pi_desc *pi_desc)
{
    return bitmap_empty((unsigned long *)pi_desc->pir, NR_VECTORS);
}
 
static inline void pi_set_sn(struct pi_desc *pi_desc)
{
    set_bit(POSTED_INTR_SN,
        (unsigned long *)&pi_desc->control);
}
 
static inline void pi_set_on(struct pi_desc *pi_desc)
{
    set_bit(POSTED_INTR_ON,
        (unsigned long *)&pi_desc->control);
}
 
static inline void pi_clear_on(struct pi_desc *pi_desc)
{
    clear_bit(POSTED_INTR_ON,
        (unsigned long *)&pi_desc->control);
}
 
static inline void pi_clear_sn(struct pi_desc *pi_desc)
{
    clear_bit(POSTED_INTR_SN,
        (unsigned long *)&pi_desc->control);
}
 
static inline bool pi_test_on(struct pi_desc *pi_desc)
{
    return test_bit(POSTED_INTR_ON,
            (unsigned long *)&pi_desc->control);
}
 
static inline bool pi_test_sn(struct pi_desc *pi_desc)
{
    return test_bit(POSTED_INTR_SN,
            (unsigned long *)&pi_desc->control);
}
 
void vmx_vcpu_pi_load(struct kvm_vcpu *vcpu, int cpu);
void vmx_vcpu_pi_put(struct kvm_vcpu *vcpu);
void pi_wakeup_handler(void);
void __init pi_init_cpu(int cpu);
bool pi_has_pending_interrupt(struct kvm_vcpu *vcpu);
int vmx_pi_update_irte(struct kvm *kvm, unsigned int host_irq,
               uint32_t guest_irq, bool set);
void vmx_pi_start_assignment(struct kvm *kvm);
 
#endif /* __KVM_X86_VMX_POSTED_INTR_H */