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irqchip/gic-v4: Add management structure definitions

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Add a bunch of GICv4-specific data structures that will get used in
subsequent patches.

Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Marc Zyngier 2016-12-19 19:25:00 +00:00
parent adcdb94e31
commit de29faa0d8
1 changed files with 92 additions and 0 deletions
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92
include/linux/irqchip/arm-gic-v4.h Normal file
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/*
* Copyright (C) 2016,2017 ARM Limited, All Rights Reserved.
* Author: Marc Zyngier <marc.zyngier@arm.com>
*
* 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 __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
* @vpe: Pointer to the GICv4 notion of a virtual CPU (VPE)
* @vintid: Virtual LPI number
* @db_enabled: Is the VPE doorbell to be generated?
*/
struct its_vlpi_map {
struct its_vm *vm;
struct its_vpe *vpe;
u32 vintid;
bool db_enabled;
};
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