From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marc Zyngier Subject: [PATCH v3 14/59] irqchip/gic-v4: Add management structure definitions Date: Mon, 31 Jul 2017 18:25:52 +0100 Message-ID: <20170731172637.29355-15-marc.zyngier@arm.com> References: <20170731172637.29355-1-marc.zyngier@arm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: Jason Cooper , Thomas Gleixner To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org Return-path: In-Reply-To: <20170731172637.29355-1-marc.zyngier@arm.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu List-Id: kvm.vger.kernel.org Add a bunch of GICv4-specific data structures that will get used in subsequent patches. Reviewed-by: Thomas Gleixner Signed-off-by: Marc Zyngier --- include/linux/irqchip/arm-gic-v4.h | 92 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 92 insertions(+) create mode 100644 include/linux/irqchip/arm-gic-v4.h diff --git a/include/linux/irqchip/arm-gic-v4.h b/include/linux/irqchip/arm-gic-v4.h new file mode 100644 index 000000000000..5ba0fb6b094d --- /dev/null +++ b/include/linux/irqchip/arm-gic-v4.h @@ -0,0 +1,92 @@ +/* + * Copyright (C) 2016,2017 ARM Limited, All Rights Reserved. + * Author: Marc Zyngier + * + * 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 __LINUX_IRQCHIP_ARM_GIC_V4_H +#define __LINUX_IRQCHIP_ARM_GIC_V4_H + +struct its_vpe; + +/* Embedded in kvm.arch */ +struct its_vm { + struct fwnode_handle *fwnode; + struct irq_domain *domain; + struct page *vprop_page; + struct its_vpe **vpes; + int nr_vpes; + irq_hw_number_t db_lpi_base; + unsigned long *db_bitmap; + int nr_db_lpis; +}; + +/* Embedded in kvm_vcpu.arch */ +struct its_vpe { + struct page *vpt_page; + struct its_vm *its_vm; + /* Doorbell interrupt */ + int irq; + irq_hw_number_t vpe_db_lpi; + /* + * This collection ID is used to indirect the target + * redistributor for this VPE. The ID itself isn't involved in + * programming of the ITS. + */ + u16 col_idx; + /* Unique (system-wide) VPE identifier */ + u16 vpe_id; + /* Implementation Defined Area Invalid */ + bool idai; + /* Pending VLPIs on schedule out? */ + bool pending_last; +}; + +/* + * struct its_vlpi_map: structure describing the mapping of a + * VLPI. Only to be interpreted in the context of a physical interrupt + * it complements. To be used as the vcpu_info passed to + * irq_set_vcpu_affinity(). + * + * @vm: Pointer to the GICv4 notion of a VM + * @vintid: Virtual LPI number + * @db_enabled: Is the VPE doorbell to be generated? + * @vpe_idx: Index (0-based) of the VPE in this VM. Not the vpe_id! + */ +struct its_vlpi_map { + struct its_vm *vm; + u32 vintid; + bool db_enabled; + u16 vpe_idx; +}; + +enum its_vcpu_info_cmd_type { + MAP_VLPI, + GET_VLPI, + PROP_UPDATE_VLPI, + PROP_UPDATE_AND_INV_VLPI, + SCHEDULE_VPE, + DESCHEDULE_VPE, + INVALL_VPE, +}; + +struct its_cmd_info { + enum its_vcpu_info_cmd_type cmd_type; + union { + struct its_vlpi_map *map; + u8 config; + }; +}; + +#endif -- 2.11.0