Add a bunch of GICv4-specific data structures that will get used in subsequent patches.
Signed-off-by: Marc Zyngier <[email protected]> --- 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 0000000..6e9c2b3 --- /dev/null +++ b/include/linux/irqchip/arm-gic-v4.h @@ -0,0 +1,92 @@ +/* + * Copyright (C) 2016 ARM Limited, All Rights Reserved. + * Author: Marc Zyngier <[email protected]> + * + * 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 + +/* Embedded in kvm.arch */ +struct its_vm { + struct irq_domain *domain; + struct page *vprop_page; + 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; + irq_hw_number_t vpe_db_lpi; + u16 col_idx; + u16 vpe_id; + bool idai; + bool pending_last; +}; + +/* + * struct its_vlpi: structure describing a VLPI. Only to be + * interpreted in the context of a physical interrupt it complements. + * + * @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 { + u32 vintid; + bool db_enabled; + u16 vpe_idx; +}; + +/* + * struct its_vlpi_map: structure describing the mappings of all vlpis + * for a single device. To be used as the vcpu_info passed to + * irq_set_vcpu_affinity(). + * + * @vpes: Array of struct its_vpe, describing the GICv4 view of the + * vpus. + * @vlpis: Array of struct vlpi, each one matching one the + * corresponding LPI + * @nr_vpes: Size of the @vpes array + * @nr_vlpis: Size of the @vlpis array + */ +struct its_vlpi_map { + /* nr_vpes */ + struct its_vpe **vpes; + struct its_vlpi *vlpis; + int nr_vpes; + int nr_vlpis; +}; + +enum its_cmd_type { + MAP_VLPI, + UNMAP_VLPI, + PROP_UPDATE_VLPI, + SCHEDULE_VPE, + DESCHEDULE_VPE, + INVALL_VPE, +}; + +struct its_cmd_info { + enum its_cmd_type cmd_type; + union { + struct its_vlpi_map *map; + u8 config; + }; +}; + +#endif -- 2.1.4
