kvm/vgic/vgic.h

1 /* SPDX-License-Identifier: GPL-2.0-only */
8 #include <linux/irqchip/arm-gic-common.h>
14 #define VGIC_ADDR_UNDEF		(-1)
19 #define VGIC_LPI_MAX_INTID	((1 << INTERRUPT_ID_BITS_ITS) - 1)
47  * As per Documentation/virt/kvm/devices/arm-vgic-v3.rst,
68  * As per Documentation/virt/kvm/devices/arm-vgic-its.rst,
69  * below macros are defined for ITS table entry encoding.
105 	return vcpu->kvm->arch.vgic.implementation_rev;  in vgic_get_implementation_rev()
111 	if (irq->config == VGIC_CONFIG_EDGE)  in irq_is_pending()
112 		return irq->pending_latch;  in irq_is_pending()
114 		return irq->pending_latch || irq->line_level;  in irq_is_pending()
119 	return irq->config == VGIC_CONFIG_LEVEL && irq->hw;  in vgic_irq_is_mapped_level()
125 	if (vgic_irq_is_sgi(irq->intid) && irq->source)  in vgic_irq_get_lr_count()
126 		return hweight8(irq->source) + irq->active;  in vgic_irq_get_lr_count()
128 	return irq_is_pending(irq) || irq->active;  in vgic_irq_get_lr_count()
139 	struct vgic_dist *dist = &kvm->arch.vgic;  in vgic_write_guest_lock()
142 	dist->table_write_in_progress = true;  in vgic_write_guest_lock()
144 	dist->table_write_in_progress = false;  in vgic_write_guest_lock()
151  * in the GICH_VMCR and ICH_VMCR registers, such that code exporting the GIC
153  * registers regardless of the hardware backed GIC used.
189 			   unsigned long flags) __releases(&irq->irq_lock);
227 	if (irq->intid < VGIC_MIN_LPI)  in vgic_try_get_irq_kref()
230 	return kref_get_unless_zero(&irq->refcount);  in vgic_try_get_irq_kref()
283 	struct vgic_cpu *cpu_if = &vcpu->arch.vgic_cpu;  in vgic_v3_max_apr_idx()
290 	switch (cpu_if->num_pri_bits) {  in vgic_v3_max_apr_idx()
300 	if (!region->count)  in vgic_v3_redist_region_full()
303 	return (region->free_index >= region->count);  in vgic_v3_redist_region_full()
311 	if (!rdreg->count)  in vgic_v3_rd_region_size()
312 		return atomic_read(&kvm->online_vcpus) * KVM_VGIC_V3_REDIST_SIZE;  in vgic_v3_rd_region_size()
314 		return rdreg->count * KVM_VGIC_V3_REDIST_SIZE;  in vgic_v3_rd_region_size()
325 	struct vgic_dist *d = &kvm->arch.vgic;  in vgic_dist_overlap()
327 	return (base + size > d->vgic_dist_base) &&  in vgic_dist_overlap()
328 		(base < d->vgic_dist_base + KVM_VGIC_V3_DIST_SIZE);  in vgic_dist_overlap()
332 int vgic_its_resolve_lpi(struct kvm *kvm, struct vgic_its *its,
353 	return kvm_has_feat(kvm, ID_AA64PFR0_EL1, GIC, IMP);  in kvm_has_gicv3()