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path: root/virt/kvm/arm/vgic/vgic-irqfd.c
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Diffstat (limited to 'virt/kvm/arm/vgic/vgic-irqfd.c')
-rw-r--r--virt/kvm/arm/vgic/vgic-irqfd.c141
1 files changed, 0 insertions, 141 deletions
diff --git a/virt/kvm/arm/vgic/vgic-irqfd.c b/virt/kvm/arm/vgic/vgic-irqfd.c
deleted file mode 100644
index d8cdfea5cc96..000000000000
--- a/virt/kvm/arm/vgic/vgic-irqfd.c
+++ /dev/null
@@ -1,141 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (C) 2015, 2016 ARM Ltd.
- */
-
-#include <linux/kvm.h>
-#include <linux/kvm_host.h>
-#include <trace/events/kvm.h>
-#include <kvm/arm_vgic.h>
-#include "vgic.h"
-
-/**
- * vgic_irqfd_set_irq: inject the IRQ corresponding to the
- * irqchip routing entry
- *
- * This is the entry point for irqfd IRQ injection
- */
-static int vgic_irqfd_set_irq(struct kvm_kernel_irq_routing_entry *e,
- struct kvm *kvm, int irq_source_id,
- int level, bool line_status)
-{
- unsigned int spi_id = e->irqchip.pin + VGIC_NR_PRIVATE_IRQS;
-
- if (!vgic_valid_spi(kvm, spi_id))
- return -EINVAL;
- return kvm_vgic_inject_irq(kvm, 0, spi_id, level, NULL);
-}
-
-/**
- * kvm_set_routing_entry: populate a kvm routing entry
- * from a user routing entry
- *
- * @kvm: the VM this entry is applied to
- * @e: kvm kernel routing entry handle
- * @ue: user api routing entry handle
- * return 0 on success, -EINVAL on errors.
- */
-int kvm_set_routing_entry(struct kvm *kvm,
- struct kvm_kernel_irq_routing_entry *e,
- const struct kvm_irq_routing_entry *ue)
-{
- int r = -EINVAL;
-
- switch (ue->type) {
- case KVM_IRQ_ROUTING_IRQCHIP:
- e->set = vgic_irqfd_set_irq;
- e->irqchip.irqchip = ue->u.irqchip.irqchip;
- e->irqchip.pin = ue->u.irqchip.pin;
- if ((e->irqchip.pin >= KVM_IRQCHIP_NUM_PINS) ||
- (e->irqchip.irqchip >= KVM_NR_IRQCHIPS))
- goto out;
- break;
- case KVM_IRQ_ROUTING_MSI:
- e->set = kvm_set_msi;
- e->msi.address_lo = ue->u.msi.address_lo;
- e->msi.address_hi = ue->u.msi.address_hi;
- e->msi.data = ue->u.msi.data;
- e->msi.flags = ue->flags;
- e->msi.devid = ue->u.msi.devid;
- break;
- default:
- goto out;
- }
- r = 0;
-out:
- return r;
-}
-
-static void kvm_populate_msi(struct kvm_kernel_irq_routing_entry *e,
- struct kvm_msi *msi)
-{
- msi->address_lo = e->msi.address_lo;
- msi->address_hi = e->msi.address_hi;
- msi->data = e->msi.data;
- msi->flags = e->msi.flags;
- msi->devid = e->msi.devid;
-}
-/**
- * kvm_set_msi: inject the MSI corresponding to the
- * MSI routing entry
- *
- * This is the entry point for irqfd MSI injection
- * and userspace MSI injection.
- */
-int kvm_set_msi(struct kvm_kernel_irq_routing_entry *e,
- struct kvm *kvm, int irq_source_id,
- int level, bool line_status)
-{
- struct kvm_msi msi;
-
- if (!vgic_has_its(kvm))
- return -ENODEV;
-
- if (!level)
- return -1;
-
- kvm_populate_msi(e, &msi);
- return vgic_its_inject_msi(kvm, &msi);
-}
-
-/**
- * kvm_arch_set_irq_inatomic: fast-path for irqfd injection
- *
- * Currently only direct MSI injection is supported.
- */
-int kvm_arch_set_irq_inatomic(struct kvm_kernel_irq_routing_entry *e,
- struct kvm *kvm, int irq_source_id, int level,
- bool line_status)
-{
- if (e->type == KVM_IRQ_ROUTING_MSI && vgic_has_its(kvm) && level) {
- struct kvm_msi msi;
-
- kvm_populate_msi(e, &msi);
- if (!vgic_its_inject_cached_translation(kvm, &msi))
- return 0;
- }
-
- return -EWOULDBLOCK;
-}
-
-int kvm_vgic_setup_default_irq_routing(struct kvm *kvm)
-{
- struct kvm_irq_routing_entry *entries;
- struct vgic_dist *dist = &kvm->arch.vgic;
- u32 nr = dist->nr_spis;
- int i, ret;
-
- entries = kcalloc(nr, sizeof(*entries), GFP_KERNEL);
- if (!entries)
- return -ENOMEM;
-
- for (i = 0; i < nr; i++) {
- entries[i].gsi = i;
- entries[i].type = KVM_IRQ_ROUTING_IRQCHIP;
- entries[i].u.irqchip.irqchip = 0;
- entries[i].u.irqchip.pin = i;
- }
- ret = kvm_set_irq_routing(kvm, entries, nr, 0);
- kfree(entries);
- return ret;
-}