mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-22 12:54:09 +07:00
47f9d0bf52
In some randconfig scenarios, including arm-gic-v4.h results in a spurious wawrning about the $SUBJECT structure not being defined. Adding a forward definition keeps it quiet. Reported-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
116 lines
3.1 KiB
C
116 lines
3.1 KiB
C
/*
|
|
* 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;
|
|
|
|
/*
|
|
* Maximum number of ITTs when GITS_TYPER.VMOVP == 0, using the
|
|
* ITSList mechanism to perform inter-ITS synchronization.
|
|
*/
|
|
#define GICv4_ITS_LIST_MAX 16
|
|
|
|
/* 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;
|
|
u32 vlpi_count[GICv4_ITS_LIST_MAX];
|
|
};
|
|
|
|
/* 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;
|
|
/* VPE proxy mapping */
|
|
int vpe_proxy_event;
|
|
/*
|
|
* 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
|
|
* @properties: Priority and enable bits (as written in the prop table)
|
|
* @db_enabled: Is the VPE doorbell to be generated?
|
|
*/
|
|
struct its_vlpi_map {
|
|
struct its_vm *vm;
|
|
struct its_vpe *vpe;
|
|
u32 vintid;
|
|
u8 properties;
|
|
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;
|
|
};
|
|
};
|
|
|
|
int its_alloc_vcpu_irqs(struct its_vm *vm);
|
|
void its_free_vcpu_irqs(struct its_vm *vm);
|
|
int its_schedule_vpe(struct its_vpe *vpe, bool on);
|
|
int its_invall_vpe(struct its_vpe *vpe);
|
|
int its_map_vlpi(int irq, struct its_vlpi_map *map);
|
|
int its_get_vlpi(int irq, struct its_vlpi_map *map);
|
|
int its_unmap_vlpi(int irq);
|
|
int its_prop_update_vlpi(int irq, u8 config, bool inv);
|
|
|
|
struct irq_domain_ops;
|
|
int its_init_v4(struct irq_domain *domain, const struct irq_domain_ops *ops);
|
|
|
|
#endif
|