diff options
Diffstat (limited to 'virt/kvm/arm/vgic/vgic-mmio.c')
| -rw-r--r-- | virt/kvm/arm/vgic/vgic-mmio.c | 37 |
1 files changed, 30 insertions, 7 deletions
diff --git a/virt/kvm/arm/vgic/vgic-mmio.c b/virt/kvm/arm/vgic/vgic-mmio.c index 5e79e0137cb6..26be827bbfcc 100644 --- a/virt/kvm/arm/vgic/vgic-mmio.c +++ b/virt/kvm/arm/vgic/vgic-mmio.c @@ -473,8 +473,7 @@ static int dispatch_mmio_read(struct kvm_vcpu *vcpu, struct kvm_io_device *dev, { struct vgic_io_device *iodev = kvm_to_vgic_iodev(dev); const struct vgic_register_region *region; - struct kvm_vcpu *r_vcpu; - unsigned long data; + unsigned long data = 0; region = vgic_find_mmio_region(iodev->regions, iodev->nr_regions, addr - iodev->base_addr); @@ -483,8 +482,20 @@ static int dispatch_mmio_read(struct kvm_vcpu *vcpu, struct kvm_io_device *dev, return 0; } - r_vcpu = iodev->redist_vcpu ? iodev->redist_vcpu : vcpu; - data = region->read(r_vcpu, addr, len); + switch (iodev->iodev_type) { + case IODEV_CPUIF: + return 1; + case IODEV_DIST: + data = region->read(vcpu, addr, len); + break; + case IODEV_REDIST: + data = region->read(iodev->redist_vcpu, addr, len); + break; + case IODEV_ITS: + data = region->its_read(vcpu->kvm, iodev->its, addr, len); + break; + } + vgic_data_host_to_mmio_bus(val, len, data); return 0; } @@ -494,7 +505,6 @@ static int dispatch_mmio_write(struct kvm_vcpu *vcpu, struct kvm_io_device *dev, { struct vgic_io_device *iodev = kvm_to_vgic_iodev(dev); const struct vgic_register_region *region; - struct kvm_vcpu *r_vcpu; unsigned long data = vgic_data_mmio_bus_to_host(val, len); region = vgic_find_mmio_region(iodev->regions, iodev->nr_regions, @@ -505,8 +515,20 @@ static int dispatch_mmio_write(struct kvm_vcpu *vcpu, struct kvm_io_device *dev, if (!check_region(region, addr, len)) return 0; - r_vcpu = iodev->redist_vcpu ? iodev->redist_vcpu : vcpu; - region->write(r_vcpu, addr, len, data); + switch (iodev->iodev_type) { + case IODEV_CPUIF: + break; + case IODEV_DIST: + region->write(vcpu, addr, len, data); + break; + case IODEV_REDIST: + region->write(iodev->redist_vcpu, addr, len, data); + break; + case IODEV_ITS: + region->its_write(vcpu->kvm, iodev->its, addr, len, data); + break; + } + return 0; } @@ -536,6 +558,7 @@ int vgic_register_dist_iodev(struct kvm *kvm, gpa_t dist_base_address, } io_device->base_addr = dist_base_address; + io_device->iodev_type = IODEV_DIST; io_device->redist_vcpu = NULL; mutex_lock(&kvm->slots_lock); |