From: Marc Zyngier <maz@kernel.org> To: kvmarm@lists.cs.columbia.edu, linux-kernel@vger.kernel.org Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>, Jason Cooper <jason@lakedaemon.net>, Robert Richter <rrichter@marvell.com>, Thomas Gleixner <tglx@linutronix.de> Subject: [PATCH v3 11/32] irqchip/gic-v4.1: Add VPE residency callback Date: Tue, 24 Dec 2019 11:10:34 +0000 Message-ID: <20191224111055.11836-12-maz@kernel.org> (raw) In-Reply-To: <20191224111055.11836-1-maz@kernel.org> Making a VPE resident on GICv4.1 is pretty simple, as it is just a single write to the local redistributor. We just need extra information about which groups to enable, which the KVM code will have to provide. Reviewed-by: Zenghui Yu <yuzenghui@huawei.com> Signed-off-by: Marc Zyngier <maz@kernel.org> --- drivers/irqchip/irq-gic-v3-its.c | 17 +++++++++++++++++ include/linux/irqchip/arm-gic-v3.h | 9 +++++++++ include/linux/irqchip/arm-gic-v4.h | 5 +++++ 3 files changed, 31 insertions(+) diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index 0da6baa48153..49850297fe56 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -3625,12 +3625,29 @@ static void its_vpe_4_1_unmask_irq(struct irq_data *d) its_vpe_4_1_send_inv(d); } +static void its_vpe_4_1_schedule(struct its_vpe *vpe, + struct its_cmd_info *info) +{ + void __iomem *vlpi_base = gic_data_rdist_vlpi_base(); + u64 val = 0; + + /* Schedule the VPE */ + val |= GICR_VPENDBASER_Valid; + val |= info->g0en ? GICR_VPENDBASER_4_1_VGRP0EN : 0; + val |= info->g1en ? GICR_VPENDBASER_4_1_VGRP1EN : 0; + val |= FIELD_PREP(GICR_VPENDBASER_4_1_VPEID, vpe->vpe_id); + + gits_write_vpendbaser(val, vlpi_base + GICR_VPENDBASER); +} + static int its_vpe_4_1_set_vcpu_affinity(struct irq_data *d, void *vcpu_info) { + struct its_vpe *vpe = irq_data_get_irq_chip_data(d); struct its_cmd_info *info = vcpu_info; switch (info->cmd_type) { case SCHEDULE_VPE: + its_vpe_4_1_schedule(vpe, info); return 0; case DESCHEDULE_VPE: diff --git a/include/linux/irqchip/arm-gic-v3.h b/include/linux/irqchip/arm-gic-v3.h index 33519b7c96cf..1c91dede7663 100644 --- a/include/linux/irqchip/arm-gic-v3.h +++ b/include/linux/irqchip/arm-gic-v3.h @@ -329,6 +329,15 @@ #define GICR_VPENDBASER_IDAI (1ULL << 62) #define GICR_VPENDBASER_Valid (1ULL << 63) +/* + * GICv4.1 VPENDBASER, used for VPE residency. On top of these fields, + * also use the above Valid, PendingLast and Dirty. + */ +#define GICR_VPENDBASER_4_1_DB (1ULL << 62) +#define GICR_VPENDBASER_4_1_VGRP0EN (1ULL << 59) +#define GICR_VPENDBASER_4_1_VGRP1EN (1ULL << 58) +#define GICR_VPENDBASER_4_1_VPEID GENMASK_ULL(15, 0) + /* * ITS registers, offsets from ITS_base */ diff --git a/include/linux/irqchip/arm-gic-v4.h b/include/linux/irqchip/arm-gic-v4.h index 498e523085a7..d9c34968467a 100644 --- a/include/linux/irqchip/arm-gic-v4.h +++ b/include/linux/irqchip/arm-gic-v4.h @@ -100,6 +100,11 @@ struct its_cmd_info { union { struct its_vlpi_map *map; u8 config; + bool req_db; + struct { + bool g0en; + bool g1en; + }; }; }; -- 2.20.1 _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
next prev parent reply index Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-12-24 11:10 [PATCH v3 00/32] irqchip/gic-v4: GICv4.1 architecture support Marc Zyngier 2019-12-24 11:10 ` [PATCH v3 01/32] irqchip/gic-v3: Detect GICv4.1 supporting RVPEID Marc Zyngier 2019-12-24 11:10 ` [PATCH v3 02/32] irqchip/gic-v3: Add GICv4.1 VPEID size discovery Marc Zyngier 2019-12-24 11:10 ` [PATCH v3 03/32] irqchip/gic-v3: Workaround Cavium TX1 erratum when reading GICD_TYPER2 Marc Zyngier 2020-03-09 22:11 ` Robert Richter 2020-03-10 11:41 ` Marc Zyngier 2020-03-10 12:34 ` Robert Richter 2020-03-11 8:45 ` Robert Richter 2020-03-11 9:03 ` Marc Zyngier 2020-03-11 9:18 ` Robert Richter 2019-12-24 11:10 ` [PATCH v3 04/32] irqchip/gic-v3: Use SGIs without active state if offered Marc Zyngier 2019-12-28 8:56 ` Zenghui Yu 2019-12-28 10:36 ` Marc Zyngier 2019-12-30 3:50 ` Zenghui Yu 2019-12-24 11:10 ` [PATCH v3 05/32] irqchip/gic-v4.1: VPE table (aka GICR_VPROPBASER) allocation Marc Zyngier 2020-01-20 14:03 ` Zenghui Yu 2020-01-20 15:11 ` Marc Zyngier 2020-01-22 2:59 ` Zenghui Yu 2019-12-24 11:10 ` [PATCH v3 06/32] irqchip/gic-v4.1: Implement the v4.1 flavour of VMAPP Marc Zyngier 2019-12-24 11:10 ` [PATCH v3 07/32] irqchip/gic-v4.1: Don't use the VPE proxy if RVPEID is set Marc Zyngier 2019-12-24 11:10 ` [PATCH v3 08/32] irqchip/gic-v4.1: Implement the v4.1 flavour of VMOVP Marc Zyngier 2019-12-24 11:10 ` [PATCH v3 09/32] irqchip/gic-v4.1: Plumb skeletal VPE irqchip Marc Zyngier 2019-12-24 11:10 ` [PATCH v3 10/32] irqchip/gic-v4.1: Add mask/unmask doorbell callbacks Marc Zyngier 2019-12-24 11:10 ` Marc Zyngier [this message] 2019-12-24 11:10 ` [PATCH v3 12/32] irqchip/gic-v4.1: Add VPE eviction callback Marc Zyngier 2019-12-24 11:10 ` [PATCH v3 13/32] irqchip/gic-v4.1: Add VPE INVALL callback Marc Zyngier 2019-12-24 11:10 ` [PATCH v3 14/32] irqchip/gic-v4.1: Suppress per-VLPI doorbell Marc Zyngier 2019-12-24 11:10 ` [PATCH v3 15/32] irqchip/gic-v4.1: Allow direct invalidation of VLPIs Marc Zyngier 2019-12-24 11:10 ` [PATCH v3 16/32] irqchip/gic-v4.1: Advertise support v4.1 to KVM Marc Zyngier 2019-12-24 11:10 ` [PATCH v3 17/32] irqchip/gic-v4.1: Map the ITS SGIR register page Marc Zyngier 2019-12-24 11:10 ` [PATCH v3 18/32] irqchip/gic-v4.1: Plumb skeletal VSGI irqchip Marc Zyngier 2019-12-24 11:10 ` [PATCH v3 19/32] irqchip/gic-v4.1: Add initial SGI configuration Marc Zyngier 2019-12-24 11:10 ` [PATCH v3 20/32] irqchip/gic-v4.1: Plumb mask/unmask SGI callbacks Marc Zyngier 2019-12-24 11:10 ` [PATCH v3 21/32] irqchip/gic-v4.1: Plumb get/set_irqchip_state " Marc Zyngier 2019-12-24 11:10 ` [PATCH v3 22/32] irqchip/gic-v4.1: Plumb set_vcpu_affinity " Marc Zyngier 2019-12-24 11:10 ` [PATCH v3 23/32] irqchip/gic-v4.1: Move doorbell management to the GICv4 abstraction layer Marc Zyngier 2019-12-24 11:10 ` [PATCH v3 24/32] irqchip/gic-v4.1: Add VSGI allocation/teardown Marc Zyngier 2019-12-24 11:10 ` [PATCH v3 25/32] irqchip/gic-v4.1: Add VSGI property setup Marc Zyngier 2019-12-24 11:10 ` [PATCH v3 26/32] irqchip/gic-v4.1: Eagerly vmap vPEs Marc Zyngier 2019-12-24 11:10 ` [PATCH v3 27/32] KVM: arm64: GICv4.1: Let doorbells be auto-enabled Marc Zyngier 2019-12-24 11:10 ` [PATCH v3 28/32] KVM: arm64: GICv4.1: Add direct injection capability to SGI registers Marc Zyngier 2019-12-28 9:19 ` Zenghui Yu 2019-12-28 10:41 ` Marc Zyngier 2019-12-24 11:10 ` [PATCH v3 29/32] KVM: arm64: GICv4.1: Allow SGIs to switch between HW and SW interrupts Marc Zyngier 2020-01-15 2:49 ` Shaokun Zhang 2020-01-15 3:49 ` Zenghui Yu 2020-01-15 13:32 ` Marc Zyngier 2020-01-15 13:49 ` Zenghui Yu 2020-01-16 6:13 ` Shaokun Zhang 2020-01-15 13:17 ` Marc Zyngier 2019-12-24 11:10 ` [PATCH v3 30/32] KVM: arm64: GICv4.1: Plumb SGI implementation selection in the distributor Marc Zyngier 2019-12-24 11:10 ` [PATCH v3 31/32] KVM: arm64: GICv4.1: Reload VLPI configuration on distributor enable/disable Marc Zyngier 2019-12-24 11:10 ` [PATCH v3 32/32] KVM: arm64: GICv4.1: Expose HW-based SGIs in debugfs Marc Zyngier
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