From: Christoffer Dall <christoffer.dall@xxxxxxxxxx> The new VGIC implementation centers around a struct vgic_irq instance per virtual IRQ. Provide a function to retrieve the right instance for a given IRQ number and (in case of private interrupts) the right VCPU. Signed-off-by: Christoffer Dall <christoffer.dall@xxxxxxxxxx> Signed-off-by: Andre Przywara <andre.przywara@xxxxxxx> --- virt/kvm/arm/vgic/vgic.c | 41 +++++++++++++++++++++++++++++++++++++++++ virt/kvm/arm/vgic/vgic.h | 22 ++++++++++++++++++++++ 2 files changed, 63 insertions(+) create mode 100644 virt/kvm/arm/vgic/vgic.c create mode 100644 virt/kvm/arm/vgic/vgic.h diff --git a/virt/kvm/arm/vgic/vgic.c b/virt/kvm/arm/vgic/vgic.c new file mode 100644 index 0000000..fb45537 --- /dev/null +++ b/virt/kvm/arm/vgic/vgic.c @@ -0,0 +1,41 @@ +/* + * Copyright (C) 2015, 2016 ARM Ltd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <linux/kvm.h> +#include <linux/kvm_host.h> + +#include "vgic.h" + +struct vgic_global __section(.hyp.text) kvm_vgic_global_state; + +struct vgic_irq *vgic_get_irq(struct kvm *kvm, struct kvm_vcpu *vcpu, + u32 intid) +{ + /* SGIs and PPIs */ + if (intid <= VGIC_MAX_PRIVATE) + return &vcpu->arch.vgic_cpu.private_irqs[intid]; + + /* SPIs */ + if (intid <= VGIC_MAX_SPI) + return &kvm->arch.vgic.spis[intid - VGIC_NR_PRIVATE_IRQS]; + + /* LPIs are not yet covered */ + if (intid >= VGIC_MIN_LPI) + return NULL; + + WARN(1, "Looking up struct vgic_irq for reserved INTID"); + return NULL; +} diff --git a/virt/kvm/arm/vgic/vgic.h b/virt/kvm/arm/vgic/vgic.h new file mode 100644 index 0000000..61b8d22 --- /dev/null +++ b/virt/kvm/arm/vgic/vgic.h @@ -0,0 +1,22 @@ +/* + * Copyright (C) 2015, 2016 ARM Ltd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ +#ifndef __KVM_ARM_VGIC_NEW_H__ +#define __KVM_ARM_VGIC_NEW_H__ + +struct vgic_irq *vgic_get_irq(struct kvm *kvm, struct kvm_vcpu *vcpu, + u32 intid); + +#endif -- 2.7.3 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
