From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andre Przywara Subject: [RFC PATCH 05/45] KVM: arm/arm64: vgic-new: Add acccessor to new struct vgic_irq instance Date: Fri, 25 Mar 2016 02:04:28 +0000 Message-ID: <1458871508-17279-6-git-send-email-andre.przywara@arm.com> References: <1458871508-17279-1-git-send-email-andre.przywara@arm.com> Cc: kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org To: Christoffer Dall , Marc Zyngier , Eric Auger Return-path: Received: from foss.arm.com ([217.140.101.70]:54618 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752051AbcCYCFU (ORCPT ); Thu, 24 Mar 2016 22:05:20 -0400 In-Reply-To: <1458871508-17279-1-git-send-email-andre.przywara@arm.com> Sender: kvm-owner@vger.kernel.org List-ID: From: Christoffer Dall 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 Signed-off-by: Andre Przywara --- 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..8e34916 --- /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 . + */ + +#include +#include + +#include "vgic.h" + +struct vgic_global 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 . + */ +#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 From mboxrd@z Thu Jan 1 00:00:00 1970 From: andre.przywara@arm.com (Andre Przywara) Date: Fri, 25 Mar 2016 02:04:28 +0000 Subject: [RFC PATCH 05/45] KVM: arm/arm64: vgic-new: Add acccessor to new struct vgic_irq instance In-Reply-To: <1458871508-17279-1-git-send-email-andre.przywara@arm.com> References: <1458871508-17279-1-git-send-email-andre.przywara@arm.com> Message-ID: <1458871508-17279-6-git-send-email-andre.przywara@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Christoffer Dall 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 Signed-off-by: Andre Przywara --- 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..8e34916 --- /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 . + */ + +#include +#include + +#include "vgic.h" + +struct vgic_global 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 . + */ +#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